U.S. patent application number 15/159711 was filed with the patent office on 2016-09-15 for sensor and monitor system.
The applicant listed for this patent is Medtronic MiniMed, Inc.. Invention is credited to Joseph Makram Arsanious, Greg Bowden, Andrew Michael Bryan, Gary Cohen, Keith E. DeBrunner, Kris R. Holtzclaw, Brian T. Kannard, Fan Meng, Ulrich H. Rankers, Henry C. Sanders, Cary Talbot, Daniel Villegas, Hans K. Wenstad.
Application Number | 20160262671 15/159711 |
Document ID | / |
Family ID | 44901796 |
Filed Date | 2016-09-15 |
United States Patent
Application |
20160262671 |
Kind Code |
A1 |
Villegas; Daniel ; et
al. |
September 15, 2016 |
SENSOR AND MONITOR SYSTEM
Abstract
A system to monitor and transmit a plurality of signals based on
a characteristic of a user is disclosed. The system comprises a
sensor to produce the plurality of signals on a continuous basis,
the signals being indicative of a glucose characteristic measured
in the user when a portion of the sensor is placed in subcutaneous
tissue. The system further includes a recorder including a recorder
port to physically couple and interface with a sensor port of the
sensor and a dock remotely located from the sensor and the
recorder. The dock includes a dock receiver to physically couple
and interface with the recorder port. The recorder can record the
signals produced from the sensor when the recorder is coupled to
the sensor and the recorder can transmit the stored signals to the
dock when the recorder is removed from the sensor and coupled to
the dock.
Inventors: |
Villegas; Daniel; (Porter
Ranch, CA) ; Sanders; Henry C.; (Santa Clarita,
CA) ; Bowden; Greg; (Granada Hills, CA) ;
Talbot; Cary; (Santa Clarita, CA) ; Holtzclaw; Kris
R.; (Santa Clarita, CA) ; Wenstad; Hans K.;
(Santa Clarita, CA) ; Cohen; Gary; (Sherman Oaks,
CA) ; Kannard; Brian T.; (Los Angeles, CA) ;
DeBrunner; Keith E.; (Simi Valley, CA) ; Arsanious;
Joseph Makram; (San Jose, CA) ; Meng; Fan;
(San Marino, CA) ; Bryan; Andrew Michael; (Los
Angeles, CA) ; Rankers; Ulrich H.; (Porter Ranch,
CA) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Medtronic MiniMed, Inc. |
Northridge |
CA |
US |
|
|
Family ID: |
44901796 |
Appl. No.: |
15/159711 |
Filed: |
May 19, 2016 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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13105608 |
May 11, 2011 |
9370322 |
|
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15159711 |
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|
12651213 |
Dec 31, 2009 |
8550997 |
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13105608 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 2560/0456 20130101;
A61B 2560/0214 20130101; A61B 5/1495 20130101; A61B 2560/0276
20130101; A61B 5/14532 20130101; A61B 5/742 20130101; A61B 5/7278
20130101; A61B 5/0004 20130101; A61B 5/0002 20130101; A61B
2560/0204 20130101; A61B 5/7405 20130101; A61B 2560/0475 20130101;
A61B 5/14503 20130101 |
International
Class: |
A61B 5/145 20060101
A61B005/145; A61B 5/1495 20060101 A61B005/1495; A61B 5/00 20060101
A61B005/00 |
Claims
1. A system to monitor and transmit a plurality of signals based on
a characteristic of a user, the system comprising: a sensor to
produce the plurality of signals on a continuous basis, the signals
being indicative of a glucose characteristic measured in the user
when a portion of the sensor is adapted to be placed in
subcutaneous tissue, the sensor having a sensor port; a recorder
including a recorder port to physically couple and interface with
the sensor port to receive the produced signals from the sensor,
the recorder further including a recorder processor that includes a
recorder memory coupled to the recorder port to store the produced
signals from the sensor; a dock remotely located from the sensor
and the recorder, the dock including a dock receiver to physically
couple and interface with the recorder port to receive the stored
signals from the recorder, whereby the recorder can record the
signals produced from the sensor when the recorder is coupled to
the sensor and the recorder can transmit the stored signals to the
dock when the recorder is removed from the sensor and coupled to
the dock.
2. The system of claim 1, wherein the sensor is adapted to be
attached to the body of the user.
3. The system of claim 1, wherein the sensor produces the plurality
of signals on a continuous basis for a plurality of days.
4. The system of claim 1, the recorder including a recorder housing
and a battery contained within the recorder housing.
5. The system of claim 1, the recorder including a recorder clock
to assign a time to the signals received from the sensor.
6. The system of claim 1, including a data processor to analyze the
stored signals received from the recorder.
7. The system of claim 5, the dock including a data processor, the
data processor including: a data processor memory to store data
from the recorder, a data processor clock, and a program to assign
the time and date of the signals from the sensor by comparing the
time and date on the data processor clock with the time assigned to
the signals from the sensor by the recorder clock.
8. The system of claim 1, further including a data processor having
a program to convert the signals from the sensor to glucose
concentration values experienced by the user.
9. The system of claim 1, further including a meter having an
internal meter clock to provide reference values to the data
processor, the reference values including a timestamp from the
internal meter clock, and the data processor includes a program to
assign time and date to the reference values by comparing the time
and date on the processor clock with the timestamp of the reference
values from the meter.
10. The system of claim 4, such that when the recorder is coupled
to the dock, the dock is programmed to charge the battery of the
recorder.
11. The system of claim 1, such that when the recorder is coupled
to the dock, the dock is programmed to perform a diagnostic test of
the recorder and provide actionable feedback based on results of
the diagnostic test.
12. The system of claim 11, wherein the actionable feedback is
provided using at least one light emitting element integrated into
the dock.
13. The system of claim 11, wherein the actionable feedback is
provided using at least one audible tone.
14. The system of claim 1, wherein the dock includes at least one
light emitting element.
15. The system of claim 14, wherein the at least one light emitting
element indicates that the recorder is being charged.
16. The system of claim 14, wherein the at least one light emitting
element indicates that the recorder is fully charged.
17. The system of claim 14, wherein the at least one light emitting
element indicates whether the recorder contains stored signals to
be transmitted to the dock.
18. The system of claim 14, wherein the at least one light emitting
element indicates the recorder has passed or failed a diagnostic
test.
19. The system of claim 1, the dock further including a mating arm
configured to move between a retracted and extended position, the
mating arm defined to fit within a coupling port of a second dock,
wherein the mating arm of the dock in the extended position is
inserted into the coupling port of the second dock, to couple the
two docks into a singular unit.
20. A system to monitor and transmit a plurality of signals based
on a characteristic of a user, the system comprising: a sensor to
produce the plurality of signals on a continuous basis, the signals
being indicative of a glucose characteristic measured in the user
when a portion of the sensor is adapted to be placed in
subcutaneous tissue, the sensor having a sensor port; a transmitter
to physically couple with the sensor, the transmitter including: a
transmitter port to interface with the sensor port to receive the
signals from the sensor, a power supply to supply power to the
sensor when the transmitter port is coupled to the sensor port, a
processor having a memory to process and store the signals received
from the sensor, and a communications block to transmit the
signals; and a dock remotely located from the sensor and the
transmitter, the dock including a dock receiver to wireles sly
receive the signals from the transmitter.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. patent
application Ser. No. 13/105,608, filed May 11, 2011, which is a
continuation-in-part of U.S. patent application Ser. No.
12/651,213, filed Dec. 31, 2009, now issued U.S. Pat. No.
8,550,997, all of which is incorporated herein by reference.
FIELD OF THE INVENTION
[0002] This invention relates to monitor systems and, in particular
embodiments, to devices and methods for monitoring a sensor to
determine a characteristic of a body.
BACKGROUND OF THE INVENTION
[0003] Over the years, bodily characteristics have been determined
by obtaining a sample of bodily fluid. For example, diabetics often
test for blood glucose levels. Traditional blood glucose
determinations have utilized a painful finger prick using a lancet
to withdraw a small blood sample. This results in discomfort from
the lancet as it contacts nerves in the subcutaneous tissue. The
pain of lancing and the cumulative discomfort from multiple needle
pricks is a strong reason why patients fail to comply with a
medical testing regimen used to determine a change in
characteristic over a period of time. Although non-invasive systems
have been proposed, or are in development, none to date have been
commercialized that are effective and provide accurate results. In
addition, all of these systems are designed to provide data at
discrete points and do not provide continuous data to show the
variations in the characteristic between testing times.
[0004] A variety of implantable electrochemical sensors have been
developed for detecting and/or quantifying specific agents or
compositions in a patient's blood. For instance, glucose sensors
have been developed for use in obtaining an indication of blood
glucose levels in a diabetic patient. Such readings are useful in
monitoring and/or adjusting a treatment regimen which typically
includes the regular administration of insulin to the patient.
Thus, blood glucose readings improve medical therapies with
semi-automated medication infusion pumps of the external type, as
generally described in U.S. Pat. Nos. 4,562,751; 4,678,408; and
4,685,903; or automated implantable medication infusion pumps, as
generally described in U.S. Pat. No. 4,573,994, which are herein
incorporated by reference. Typical thin film sensors are described
in commonly assigned U.S. Pat. Nos. 5,390,671; 5,391,250;
5,482,473; and 5,586,553 which are incorporated by reference
herein, also see U.S. Pat. No. 5,299,571. However, the monitors for
these continuous sensors provide alarms, updates, trend information
and require sophisticated hardware to allow the user to program the
monitor, calibrate the sensor, enter data and view data in the
monitor and to provide real-time feedback to the user. This
sophisticated hardware makes it most practical for users that
require continuous monitoring with feedback to maintain tight
control over their conditions. In addition, these systems require
the user to be trained in their use, even if to be worn for short
periods of time to collect medical data which will be analyzed
later by a doctor.
[0005] Doctors often need continuous measurements of a body
parameter over a period of time to make an accurate diagnosis of a
condition. For instance, Holter monitor systems are used to measure
the EKG of a patient's heart over a period of time to detect
abnormalities in the heart beat of the patient. Abnormalities
detected in this manner may detect heart disease that would
otherwise go undetected. These tests, while very useful are limited
to monitoring of bio-mechanical physical changes in the body, such
as a heart beat, respiration rate, blood pressure or the like.
SUMMARY OF THE DISCLOSURE
[0006] A system to monitor and transmit a plurality of signals
based on a characteristic of a user is disclosed. The system
includes a sensor to produce the plurality of signals on a
continuous basis. The signals are indicative of a glucose
characteristic measured in the user when a portion of the sensor is
adapted to be placed in subcutaneous tissue. The sensor also
includes a sensor port. The system further includes a recorder
including a recorder port to physically couple and interface with
the sensor port to receive the produced signals from the sensor.
The recorder can further include a recorder processor that includes
a recorder memory coupled to the recorder port to store the
produced signals from the sensor. The system further includes a
dock remotely located from the sensor and the recorder. The dock
includes a dock receiver to physically couple and interface with
the recorder port to receive the stored signals from the recorder.
The recorder can record the signals produced from the sensor when
the recorder is coupled to the sensor and the recorder can transmit
the stored signals to the dock when the recorder is removed from
the sensor and coupled to the dock.
[0007] Other features and advantages of the invention will become
apparent from the following detailed description, taken in
conjunction with the accompanying drawings which illustrate, by way
of example, various features of embodiments of the invention.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] A detailed description of embodiments of the invention will
be made with reference to the accompanying drawings, wherein like
numerals designate corresponding parts in the several figures.
[0009] FIG. 1 is an exemplary illustration of components of a
monitor system, in accordance with embodiments of the present
invention.
[0010] FIG. 2A is an exemplary block diagram illustrating
components within a recorder, in accordance with one embodiment of
the present invention.
[0011] FIGS. 2B-2D illustrate various embodiments of a detail of a
recorder port, in accordance with embodiments of the present
invention.
[0012] FIGS. 3A-3D are schematic illustrations of connecting a dock
to wall plug, in accordance with embodiments of the present
invention.
[0013] FIGS. 4A and 4B are illustration showing the placement of
the recorder onto the dock, in accordance with embodiments of the
present invention.
[0014] FIGS. 5A-5C are exemplary illustrations of placement of a
sensor and installation of the recorder onto the sensor, in
accordance with embodiments of the present invention.
[0015] FIG. 6A-6C are exemplary schematics illustrating the removal
of the recorder from the sensor and placement of the recorder back
onto the dock, in accordance with embodiments of the present
invention.
[0016] FIG. 6D is an illustration showing a recorder that contains
recorded sensor data connected to a dock that is connected to a
data processor via a cable, in accordance with embodiments of the
present invention.
[0017] FIGS. 7A-7D are a series of illustrations that demonstrate
actionable feedback provided by an icon cluster when the recorder
is connected to a dock, in accordance with embodiments of the
present invention.
[0018] FIGS. 8A-8D are larger illustrations of the icon cluster in
accordance with embodiments of the present invention.
[0019] FIGS. 9A and 9B are exemplary illustration of modular
docking stations that can be connected into a single block in order
to accommodate multiple recorders in accordance with embodiments of
the present invention.
[0020] FIG. 10A is an illustration of elements within a continuous
glucose monitor system, in accordance with embodiments of the
present invention
[0021] FIG. 10B is an exemplary block diagram of a transmitter that
is connected to either a glucose sensor or a dock, in accordance
with embodiments of the present invention.
DETAILED DESCRIPTION
[0022] As shown in the drawings for purposes of illustration, the
invention is embodied in a monitor system coupled to a subcutaneous
implantable analyte sensor set to provide continuous data recording
of the sensor readings for a period of time. The recorded data
later being downloaded or transferred to a computing device to
determine body characteristic data based on the data recording over
the period of time. In embodiments of the present invention, the
analyte sensor set and monitor system are for determining glucose
levels in the blood and/or bodily fluids of the user without the
use of, or necessity of, complicated monitoring systems that
require user training and interaction. However, it will be
recognized that further embodiments of the invention may be used to
determine the levels of other analytes or agents, characteristics
or compositions, such as hormones, cholesterol, medications
concentrations, viral loads (e.g., HIV), or the like. In other
embodiments, the monitor system may also include the capability to
be programmed to record data at specified time intervals. The
monitor system and analyte sensor are primarily adapted for use in
subcutaneous human tissue. However, still further embodiments may
be placed in other types of tissue, such as muscle, lymph, organ
tissue, veins, arteries or the like, and used in animal tissue. The
analyte sensors may be subcutaneous sensors, transcutaneous
sensors, percutaneous sensors, sub-dermal sensors, skin surface
sensors, or the like. Embodiments may record sensor readings on an
intermittent or continuous basis.
[0023] FIG. 1 is an exemplary illustration of components of a
monitor system 10, in accordance with embodiments of the present
invention. A perspective view of a dock 100 illustrates icon
cluster 106 and a dock receiver 108 that is configured to connect
to a recorder data port 110 on the recorder 104. The recorder port
110 of the recorder 104 is also configured to connect to a sensor
port 112 that is included on a sensor 102. The illustration of the
sensor 102 is an exemplary top view of the sensor 102 after it has
been inserted into a patient. In some embodiments, the sensor 102
is an assembly commonly known as a "sensor set" that includes, but
it not limited to the sensor port 112, sensor adhesive (not shown)
covered by an adhesive backing116, an introducer needle (not shown
in FIG. 1), a sensing portion to be placed in a body (not shown),
and a mounting base. In many embodiments the sensor set utilizes an
electrode-type sensor that is used to monitor blood glucose levels.
A data processor 114 is also included in the monitor system 10. In
some embodiments the data processor 114 is a general purpose
computer such as a netbook, notebook computer or desktop computer
that can connect to the dock 100. In other embodiments, the data
processor 114 can be more specialized computing devices such as
smartphones or purpose built computers. In further embodiments, the
data processor includes an Internet connection and employs an
Internet-based server and Internet software application.
[0024] In some embodiments the recorder 104 is a Holter-type
recording device that can be interfaced with both the dock 100 and
the sensor 102. In one embodiment the sensor 102 utilizes an
electrode-type sensor while in alternative embodiments, the sensor
102 may use other types of sensors, such as chemical based, optical
based or the like. In further alternative embodiments, the sensor
102 may be of a type that is used on the external surface of the
skin or placed below the skin layer of the user or placed in the
blood stream of the user. Other embodiments of a surface mounted
sensor would utilize interstitial fluid harvested from the
skin.
[0025] The recorder 104 generally includes the capability to record
and store data as it is received from the sensor 102, and includes
a recorder port 110 that can be coupled with either the sensor 102
or the dock 100. When the recorder 104 is coupled to the dock 100
and the dock 100 is in communication with the data processor 114,
data stored on the recorder 104 can be transferred to the data
processor 114. To enable data transfer between either the sensor
102 or the dock 100 the recorder 104 may include a recorder port
110 that is designed to establish communication between the sensor
102 or the dock 100.
[0026] Further description regarding the sensor and associated
sensor set can be found in U.S. Pat. No. 6,248,067, entitled
ANALYTE SENSOR AND HOLIER-TYPE MONITOR SYSTEM AND METHOD OF USING
THE SAME, U.S. Pat. No. 5,586,553, entitled TRANSCUTANEOUS SENSOR
INSERTION SET, and U.S. Pat. No. 5,594,643, entitled DISPOSABLE
SENSOR INSERTION ASSEMBLY, all of which is herein incorporated by
reference.
[0027] FIG. 2A is an exemplary block diagram illustrating
components within the recorder 104, in accordance with one
embodiment of the present invention. A power supply 212 connected
to power management 214 is found within the housing 202 of the
recorder 104. In some embodiments the power supply 212 is a battery
assembly that uses a rechargeable battery chemistry to provide
power to recorder 104. In one embodiment the power supply 212 is
made up of lithium ion battery cells. However, it is understood
that alternate battery chemistries may be used, such as nickel
metal hydride, alkaline or the like. Similarly, various embodiments
can use a single battery cell while other embodiments use multiple
battery cells.
[0028] The power management 214 includes circuitry and programming
to allow recharging of the power supply 212 via the recorder port
110. In some embodiments power management 214 also includes
circuitry and programming that enables a low battery warning alarm.
In some embodiments the power supply 212 is capable of enabling the
recorder 104 to record data for seven days. Additionally, after
seven days of recording, the power supply further enables operation
of an integrated clock in the recorder 104 for an additional seven
days. Alternative embodiments may provide longer or shorter battery
lifetimes, or include a power port or solar cells to permit
recharging of the power supply 212.
[0029] The sensor 102 is connected via the sensor port 112 and the
recorder port 110 to a signal conditioning circuit 200, such as a
potentiostat or the like, in a housing 202 of the recorder 104. The
signal conditioning circuit 200 is in turn connected to a current
to frequency converter (I to F) 204. The output of the current to
frequency converter 204 is a digital frequency that varies as a
function of the sensor signal produced by the sensor 102. In
alternative embodiments, other signals, such as voltage, or the
like, may be converted to frequency. In one embodiment, the digital
frequency is then counted by a digital counter 206, and a value
from the digital counter 206 is periodically read and stored with
an indication of elapsed time, by a microprocessor 208, into a
non-volatile memory 210.
[0030] In some embodiments the microprocessor 208 includes an
integrated clock that begins tracking elapsed time when the
recorder 104 determines the sensor 102 is properly hydrated. The
integrated clock is also used to determine when events occur such
as periodic sample readings from the sensor 102. The periodic
readings from the sensor 102 are stored to the memory 210 with an
elapsed clock reading from the integrated clock. In other
embodiments, the clock is separate and distinct from the
microprocessor 208 but is still contained within the housing 202.
In such embodiments, the microprocessor 208 is still programmed and
configured to initiate the clock when the sensor 102 is properly
hydrated. Additionally, the microprocessor 208 is programmed and
configured to read and record the elapsed time of the clock. As
will be discussed later, the elapsed clock time from the integrated
clock of the recorder 104 can be used to retrospectively determine
times of the periodic readings.
[0031] In some embodiments, the recorder 104 provides power to
drive the sensor 102 via the recorder port 110 and the sensor port
112. Power from the recorder 104 may also be used to speed
initialization of the sensor 102, when it is first placed under the
skin. The use of an initialization procedure can result in a sensor
102 providing stabilized data in an hour or less compared to
requiring several hours before stabilized data is acquired without
using an initializing procedure. One exemplary initialization
procedure uses a two step process. First, a high voltage
(preferably between 1.0-1.2 volts--although other voltages may be
used) is applied to the sensor 102 for one to two minutes (although
different time periods may be used) to initiate stabilization of
the sensor 102. Then, a lower voltage (preferably between 0.5-0.6
volts--although other voltages may be used) is applied for the
remainder of the initialization procedure (typically 58 minutes or
less). The initialization procedure described above is exemplary
and other initialization procedures using differing currents,
voltages, currents and voltages, different numbers of steps, or the
like, may be used.
[0032] FIGS. 2B-2D illustrate various embodiments of detail 220 of
the recorder port 110, in accordance with embodiments of the
present invention. Detail 220 shows top contacts 222 and bottom
contacts 224 which together can simply be referred to as "the
recorder contacts". In the embodiment illustrated the recorder
contacts are mounted to a circuit board 226 to which the components
described in FIG. 2A are also mounted. The recorder contacts can be
board mounted springs, or simple contact pads, or any other variety
of contact that creates a reliable electrical connection.
[0033] The configuration illustrated is intended to be exemplary
and should not be construed to be limiting. For example, in
alternative embodiments shown in FIG. 2C, rather than a single
recorder port 110 (FIG. 2A), the sensor 104 could have two separate
ports with the first port 250 providing access to top contacts 222
while the second port 252 provides access to bottom contacts 224.
Similarly, other embodiments could use two separate ports while
placing the bottom contacts 224 on the same side of the circuit
board 226 as the top contacts 222, as shown in FIG. 2D.
[0034] As illustrated the recorder contacts are protected from
damage and/or fouling by being recessed within the recorder data
port 110. In alternative embodiments, the recorder contacts can be
exposed on the exterior of the recorder 104 and rely on pins or
pads from the both the sensor 102 (FIG. 1) and the dock 100 (FIG.
1) to make electrical contact. The recorder contacts are used for
multiple purposes such as, but not limited to, allowing the power
supply 212 (FIG. 2A) within the recorder 104 to provide power to
the sensor 102 (FIG. 1), transmitting data from the sensor 102
(FIG. 1) to memory 210 within the recorder 104, transmitting data
stored in the memory 210 (FIG. 2A) of the recorder 104 to a data
processor 114 (FIG. 1), and recharging the power supply 212 (FIG.
2A) of the recorder 104. In some embodiments the top contacts 222
are used to record sensor data and deliver power to the sensor 102.
Similarly, the bottom contacts 224 are used to charge the power
supply 212 (FIG. 2A), transfer data from the recorder 104 to the
data processor 114 and perform diagnostic tests of the recorder
components shown in FIG. 2A. The particular examples described
above should be considered demonstrative and should not be
construed as limiting the present invention. In other embodiments
different combinations and configurations of recorder contacts may
be used to perform various recorder functions and features.
[0035] FIGS. 3A-3D are schematic illustrations of connecting the
dock 100 to wall plug 304, in accordance with embodiments of the
present invention. FIG. 3A illustrates plugging cable 302a into a
dock port 300 where the dock port 300 is integrated into the dock
100. In some embodiments the dock port 300 is chosen from a variety
of standard ports in order to simplify manufacturing and
distribution. As illustrated, the dock port 300 is a standard
female mini-USB type connector while cable end 302b is the
corresponding standard male mini-USB type connector. Alternate
embodiments can use various connectors that are capable of
supplying power and transmitting data. For example the cable end
302b could use a proprietary connector and dock port 300 could have
a corresponding proprietary socket. Alternatively, a variety of USB
connectors and socket could be used, including, but not limited to
Type A, Type B, Mirco-AB and Micro-B. FIG. 3B illustrates plugging
cable end 302c into the wall plug 304. For simplicity of
distribution, FIG. 3B shows cable end 302c as Type A USB plug while
a plug receptacle 308 is a USB Type A receptacle. As described
above, various plugs and receptacles can be used in place of those
shown in FIG. 3B.
[0036] FIG. 3C illustrates a single dock 100 being powered from a
power strip 310. The wall plug 304 is connected to the power strip
310 and power is transmitted to the dock 100 via the cable 302a. In
one embodiment, the dock 100 includes hardware and software to
determine if enough power is being supplied to the dock 100. In
situations where the dock 100 is receiving appropriate levels of
power the power indicator 306 will be constantly illuminated. The
power indicator 306 is part of the icon cluster 106 which will be
discussed in more detail during the description of FIGS. 7 and
8.
[0037] FIG. 3D is an exemplary illustration showing multiple docks
100 each drawing power from the power strip 310 via the wall plugs
304. The ability to supply power to the dock 100 via the wall plug
304 or via a USB port from a data processor 114 (FIG. 1) allows
practitioners to use multiple docks 100 without requiring multiple
data processors. This allows a practitioner to have a central
location for multiple docks 100 separate and distinct from the data
processor 114 (FIG. 1). With many practitioners, data processors
114 (FIG. 1) in their office may be located near a reception area
that is separated from patient exam or consultation rooms. Thus,
depending on placement of data processors in a given office, the
ability to charge recorders 104 (FIG. 1) using docks 100 that are
simply plugged into a wall may be advantageous as the practitioner
may have limited access to data processors 114 (FIG. 1).
[0038] FIGS. 4A and 4B are illustration showing the placement of
the sensor 104 onto the dock 100, in accordance with embodiments of
the present invention. As shown in FIG. 1, the dock 100 includes
dock receiver 108. The dock receiver 108 (FIG. 1) includes
electrical contacts that in one embodiment, interface with bottom
contacts 224 (FIG. 2B). A hood 400 is included on the dock 100 in
order to protect the electrical contacts on the dock receiver 108
(FIG. 1). As shown in FIG. 4A, the hood 400 extends over the dock
receiver 108 (FIG. 1) and protects the dock receiver 108 (FIG. 1)
from being deformed or rendered unable to couple with the recorder
port 110. In the embodiment illustrated in FIG. 4A the recorder 104
is pushed in direction D.sub.1 onto the dock receiver 108 (FIG. 1)
which results in what is shown in FIG. 4B. Note that the icon
cluster 106 remains visible after the recorder 104 is coupled with
the dock 100. In some embodiments, an additional cleaning plug (not
shown) is used to seal the recorder port 110 to prevent liquids
from entering the recorder port 110 so the recorder 104 can be
cleaned before the recorder 104 is coupled with the dock 100. The
additional step of cleaning the recorder port 110 can reduce or
prevent fouling of the dock.
[0039] As previously discussed, the dock 100 can draw power from
either a wall plug 304 (FIG. 3C) or data processor 114 (FIG. 1).
When the dock 100 of FIG. 4B is connected to sufficient power via a
wall plug 304 (FIG. 3C) or via a connection with the data processor
114 as shown in FIG. 6D, hardware and software within the dock 100
will begin charging the power supply 212 (FIG. 2A) within the
recorder 104. As will be discussed in the description of FIGS. 7
and 8, a battery indicator 402 on the dock 100 provides actionable
user feedback regarding the state of the power supply 212 (FIG. 2A)
within the recorder 104.
[0040] FIGS. 5A-5C are exemplary illustrations of placement of a
sensor 102 and installation of the recorder 104 onto the sensor
102, in accordance with embodiments of the present invention. FIG.
5A illustrates a sequence of typical steps used to place the sensor
102 within interstitial fluid of a patient. The leftmost panel of
FIG. 5A is illustrative of using an inserter 500 to assist in the
installation or placement of the sensor 102. Commonly, inserters
500 are customized to accommodate a specific type of sensor 102.
For additional information regarding inserters 500 please see U.S.
patent application Ser. No. 10/314,653 filed on Dec. 9, 2002,
entitled INSERTION DEVICE FOR INSERTION SET AND METHOD OF USING THE
SAME, U.S. Pat. No. 6,607,509, entitled INSERTION DEVICE FOR AN
INSERTION SET AND METHOD OF USING THE SAME, and U.S. Pat. No.
5,851,197 entitled INJECTOR FOR A SUBCUTANEOUS INFUSION SET, all of
which are herein incorporated by reference.
[0041] The middle panel of FIG. 5A is an illustration showing the
removal of the adhesive backing 116 to expose an adhesive that
enables adhesion of the sensor 102 to the skin 504 of a patient.
The rightmost panel of FIG. 5A is an illustration that depicts the
removal of an introducer needle 506 that is used during the
placement of the sensor 102. FIG. 5B is an exemplary illustration
showing the installation of the recorder 104 onto the sensor 102.
Direction arrows D.sub.2 indicate that the recorder 104 is pushed
onto the sensor 102 that was adhered to the patient, as shown in
the middle panel of FIG. 5A. In some embodiments, it is desirable
to wait a predetermined period of time before installing the
recorder 104 onto the sensor 102. For example, it may be
advantageous to wait for up to 15 minutes for the sensor 102 to be
properly hydrated or wetted by the patient's interstitial fluid
before attaching the recorder 104. In other embodiments it may take
longer before is sensor is considered properly hydrated. Being able
to detect if an installed sensor 102 is properly hydrated can be
used by a practitioner to help determine if the sensor was properly
installed into the interstitial fluid. In other embodiments there
is no minimum time required before attaching the recorder 104 to
the sensor 102. In still more embodiments, the sensor 102 need not
be hydrated before the recorder 104 is connected. And in additional
embodiments, the recorder may be integrated with the sensor before
the sensor is inserted into a user.
[0042] As illustrated in FIG. 5C, some embodiments of the recorder
104 include a feedback indicator 502. In one embodiment the
feedback indicator 502 is a Light Emitting Diode (LED) that can be
seen through a translucent or semi-translucent housing. In other
embodiments, different light elements can be used, such as, but not
limited to incandescent lights, fluorescent lights, Organic Light
Emitting Diodes (OLED) or the like. In still other embodiments, the
feedback indicator can be an audible tone or a vibration alarm
similar to those in mobile phones. In embodiments with the feedback
indicator, the recorder 104 can provide feedback regarding the
hydration level of a connected sensor. For example, the recorder
includes hardware and software that can determine if the sensor 102
is properly hydrated. The feedback indicator 502 can help a
practitioner by narrowing the type of troubleshooting that needs to
be performed. For example, the feedback indicator 502 can be
programmed to flash a specific sequence or color to indicate that
the sensor 102 is properly hydrated. Similarly, the feedback
indicator 502 can be programmed to flash a different sequence or
color to indicate that the sensor is not properly hydrated. In
other embodiments, the feedback indicator 502 can further be
programmed to flash a particular sequence or color that indicates
to a practitioner that the sensor 104 is not fully charged or even
that data needs to be transferred from the recorder 104 before
additional data can be recorded. The examples provided are not
intended to be exhaustive of conditions that can be reported by the
feedback indicator 502. The particular examples provided are
intended to be exemplary and should not be construed as limiting
the scope of the present invention.
[0043] In some embodiments, the recorder 104 detects the connection
of the sensor 102 and activates the recorder 104 for a specified
monitoring period where sensor data is recorded onto the recorder
104, such as 3 days, 4 days, 5 days, 6 days, 7 days, or more. In
some embodiments, the recorder 104 will stop recording data after
the specified monitoring period. In specific embodiments, the
practitioner can program the recorder with a predefined duration
that the recorder will operate before it stops collecting sensor
data. In particular embodiments the recorder 104 will set an
internal "study complete" flag when it stops collecting sensor data
and the recorder 104 will not collect more sensor data until the
"study complete" flag is removed. In some embodiments the "study
complete" flag is removed when the sensor data in the recorder 104
is cleared from the recorder memory, such as by uploading the
sensor data to the data processor 114 or by clearing the sensor
data without downloading the sensor data first. In particular
embodiments, the recorder 104 includes hardware and software to
detect when a properly hydrated sensor is connected for the first
time and begins to initialize the sensor 102. Additionally, the
recorder 104 can set a "study in process" flag, an internal flag
such as a bit or switch, so the recorder 104 will not perform an
initialization sequence again until after subsequently recorded
data is retrieved or downloaded from the recorder 104. Thus, if the
sensor 102 is pulled out of the interstitial fluid of a patient,
hardware and software within the recorder 104 will detect a change
in capacitance measured across two or more sensor electrodes and
set a "discard flag" so that all data recorded while the sensor is
pulled out and be identified and ignored. Should the sensor be
pushed back into the interstitial fluid of the patient, the
recorder 104 is able to detect when the sensor 102 is rehydrated by
the change in capacitance. Once a rehydrated sensor is detected,
the recorder 104 will recognize that the "study in process" flag is
set and will not reinitialize the sensor 102. Rather, when a
rehydrated sensor is detected, the recorder 104 will remove the
discard flag.
[0044] In alternative embodiments the recorder 104 will wait a
pre-determined period of time for the sensor signal to stabilize
before removing the discard flag. The "study in process" flag is
removed when the sensor data is cleared from the recorder's memory
such as by uploading the data to the data processor 114 or clearing
the recorder's memory without uploading data. In some embodiments
the pre-determined period of time to wait for sensor signal
stabilization is approximately 30 minutes. In other embodiments,
additional or less time can be afforded to sensor signal
stabilization. Sensor life is improved by not re-initializing the
sensor 102 after the sensor is rehydrated and furthermore, power
draw from the recorder power supply 212 (FIG. 2A) is minimized. In
other embodiments, the recorder 104 can determine if sensor data
has been collected, and if sensor data is stored in the recorder's
memory, then the recorder 104 will not reinitialize when a
rehydrated sensor is detected. The recorder will initialize a
sensor only after the sensor data has been cleared from the
recorder's memory. For additional information regarding
initialization and stabilization of a sensor please see U.S. patent
application Ser. No. 12/345,354 filed on Dec. 29, 2008 entitled
METHOD AND SYSTEMS FOR OBSERVING SENSOR PARAMETERS which is herein
incorporated by reference.
[0045] In one embodiment, the recorder 104 is programmed to record
periodic sensor data for seven days, as timed by the recorder's
internal clock. In one embodiment, the internal clock within the
recorder is used to determine the periodic intervals for recording
sensor data. Thus, after a predetermined period of time has elapsed
after being connected to a hydrated sensor, data from the sensor is
recorded with an associated time stamp from the internal clock. For
example, if the recorder is programmed to record sensor data every
30 minutes after being connected to a properly hydrated sensor, the
first record of sensor data will be time stamped as occurring after
30 minutes. After recording seven days of sensor data the power
supply 112 will still have sufficient power to keep the internal
clock running for an additional seven to 11 days. In other
embodiments, the recorder 104 will supply power for more than 11
days after the sensor data is recorded. The additional seven to 11
days after recording of sensor data has ceased provides enough time
for a patient to return to a practitioner's office to return the
recorder 104 and give the practitioner time to download or retrieve
the stored sensor data from the recorder 104. To retrieve stored
sensor data the recorder 104 is placed into a dock 100 that is
connected to a data processor 114 (FIG. 1).
[0046] FIG. 6A-6C are exemplary schematics illustrating the removal
of the recorder 104 from the sensor 102 and placement of the
recorder 104 back onto the dock 100, in accordance with embodiments
of the present invention. FIGS. 6A and 6B are illustrative of a two
step procedure to remove the recorder 104 from the sensor 102. As
shown in FIG. 6A a practitioner or the patient squeezes the sensor
102 in the direction D.sub.3 in order to release clips or snaps
that help connect the recorder 104 to the sensor 102. Subsequently,
the recorder 104 is moved in the direction D.sub.4 to remove or
uncouple the recorder 104 from the sensor 102. After the recorder
104 is removed from the sensor 102, the sensor can be removed from
the patient and the recorder 104 can be cleaned using the
previously discussed cleaning plug before placing the recorder 104
on a dock 100 as shown in FIG. 6C.
[0047] FIG. 6D is an illustration showing a recorder 104 that
contains recorded sensor data connected to a dock 100 that is
connected to a data processor 114 via cable 302a, in accordance
with embodiments of the present invention. A recorder 104 that
contains recorded sensor data can be recharged using a dock 100
connected to a wall outlet, however as discussed above, the
recorder 104 will have set an internal "study in process" flag that
prevents the recorder 104 from performing an additional
initialization sequence until the recorded data is retrieved or
downloaded from the recorder 104. Thus, it is preferable for
recorders 104 with recorded sensor data to be placed on a dock 100
that is connected to a data processor 114. In other embodiments,
the recorder 104 will set the "study complete" flag when if the
recorder 104 contains sensor data and is connected to the dock 100.
Thus, the recorder 104 will collect no additional data until the
sensor data in the recorder is cleared, not even if the recorder is
reconnected to a hydrated sensor. This helps to minimize the
possibility of the recorder 104 containing data from a first
patient and then being placed on a second patient before the data
is cleared from the first patient. Furthermore, the recorder LED
502 will not flash when connected to a hydrated sensor if the
"study complete" flag or the "study in process" flag is set. This
tells the practitioner that the recorder 104 is not initializing
the sensor.
[0048] When the dock 100 is connected to a data processor 114 and
the recorder 104 is connected to the dock, 100, stored sensor data
can be downloaded from the recorder 104 to the data processor 114.
As previously discussed, the stored sensor data includes time
stamps regarding when the sensor data was recorded relative to the
internal clock of the recorder 104. The time stamped recorded data
can be used in conjunction with a clock associated with the data
processor 114 to retrospectively determine the actual time data was
recorded.
[0049] In one embodiment of the present invention, the recorder's
internal clock does not stop when the recorder 104 is removed from
the sensor 102. Then the recorder 104 is connected to the dock 100
and the dock 100 is connected to the data processor 114 such as by
using cable 302a, the recorder can download sensor data to the data
processor 114. The recorder 104 provides sensor data that is time
stamped with the age of the sensor readings. So, the data processor
114 can refer to a clock associated with the data processor 114 to
determine the time and date when the sensor data is downloaded from
the recorder 104. Then the data processor 114 can compare the age
of the last sensor reading to the time and date when the download
occurred to determine the time and date that the sensor data was
recorded. This can be done with each sensor reading.
[0050] This process of retrospective time stamping can better be
appreciated through the following example. In this example when
sensor data was downloaded from the recorder 114 to the data
processor 114 the clock associated with the data processor
indicated 1:00:00 pm on Monday. The downloaded sensor data included
the age of each sensor reading. The last sensor reading occurred 4
hours before the sensor data was downloaded to the data processor
114. The data processor 114 subtracts 4 hours from the time and
date that the download occurred to determine that the last sensor
reading was recorded at 9 AM on Monday morning. The time and date
of each sensor reading is calculated similarly.
[0051] In an alternative embodiment, the recorder 104 is coupled
with a dock 100 that is connected to a data processor 114, the
internal clock of the recorder 104 is stopped. In this example, the
internal clock of the recorder is stopped at 10 days, 5 hours 15
minutes and 30 seconds. This means the recorder 104 detected a
properly hydrated sensor 10 days, 5 hours, 15 minutes and 30
seconds ago. Additionally, 72 hours has elapsed on the internal
clock since the last sensor data reading was recorded and the clock
of the data processor 114 is reading 3 PM on Apr. 16, 2010. Thus,
based on the present time and date reported by the data processor
114 and the elapsed time of the internal clock of the recorder 104,
it can be determined that the last sensor reading was taken on Apr.
13, 2010 at 3 PM. As all recorded sensor data includes a time stamp
based on the elapsed time of the internal clock, similar
retrospective calculations can be used to determine actual time
based on the time reported by the data processor 114 for the other
recorded sensor data.
[0052] In still other embodiments, a Blood Glucose Meter (BGM) or
other reference device could be used in conjunction with the sensor
and monitor system 10 (FIG. 1) to assist with calibration of sensor
data. In one embodiment BGM data is downloaded from the BGM to the
data processor 114 and retrospectively time stamped or calibrated
similar to the sensor data. Thus, a practitioner will not need to
set the proper time and date on the meter before the study. If the
time and date of the BGM is incorrect, the data processor 114 can
compensate by comparing the time and date of the data processor 114
to the incorrect time of the BMG. The data processor has access to
the time and data of the BGM when BGM data is being downloaded from
the BGM to the data processor 114. The data processor 114 can apply
the difference between the time and date as reported by the BGM and
the time and date of the data processor 114 to determine the
correct time and date for each BGM reading.
[0053] While FIG. 6D and the above description describe data
transfer between the recorder 104 and the data processor 114 via
the cable 302a, other embodiments allow the dock 100 to draw power
through cable 302a while data transfer is conducted using wireless
communications such as, but not limited to Wi-Fi, Bluetooth,
ultrasonic frequencies, infrared or the like. Additionally,
alternate embodiments of the dock 100 do not require the cable 302a
to transfer power as the dock can include inductive power
capabilities or the dock includes an internal power supply such as
a battery.
[0054] FIGS. 7A-7D are a series of illustrations that demonstrate
actionable feedback provided by the icon cluster 106 when the
recorder 104 is connected to a dock 100, in accordance with
embodiments of the present invention. While the FIG. 7A shows the
dock 100 connected to a data processor 114 the dock can include
hardware and software that enables the dock 100 to perform the
functions described below while being connected to a wall plug 304
(FIG. 3B). FIG. 7B is an exemplary illustration showing the state
of icon cluster 106 as the recorder 104 is coupled to the dock 100.
Note that power indicator 306 is illustrated as being steadily
illuminated while the battery indicator 402 and a warning indicator
700 are not illuminated or flashing. This condition is indicative
that the dock 100 is receiving sufficient power from the data
processor 114 and the dock 100 has not begun an initialization
procedure. In FIG. 7C the recorder 104 has been coupled to the dock
100 and every element within the icon cluster 106, the power
indicator 306, the battery indicator 402 and the warning indicator
700 are flashing. This condition indicates that the dock 100 is
performing an initialization in response to the recorder 104 being
coupled to the dock 100. In one embodiment, if there is sufficient
power, the power indicator remains illuminated while the battery
indicator and warning indicator are turned off. Using a standard
USB cable 302a to supply power to the dock 100 exposes the dock 100
to power inconsistencies from data processor 114 USB ports. Though
the USB specification details the power requirement that are
required from a USB port, various factors including, but not
limited to, cable length, wire gauge within the cable, and the
number of devices attached to the bus can affect the actual power
supplied to a device.
[0055] Notification that the dock 100 is receiving sufficient power
is provided to a user by illuminating the power indicator 306,
which in one embodiment is a white LED. Thus, when the dock 100 is
initialized by either being plugged in or upon detecting the
presence of a recorder 104 and the power indicator 306 is not
constantly illuminated, it is indicative that the dock 100 is not
receiving sufficient power. To rectify the lack of power the user
can be instructed to use a powered USB hub, or to try a different
USB cable. In embodiments where the dock 100 includes a power
indicator and associated hardware and/or software actionable
feedback regarding the power supply to the dock 100 can be provided
to the user. Without the actionable feedback provided by the power
indicator 100 it could be more difficult to troubleshoot issues
with both the dock 100 and the recorder 104.
[0056] FIG. 7D is an illustration where the power indicator 306 is
shown as illuminated while the battery indicator 402 is shown as
flashing, in accordance with embodiments of the present invention.
A flashing battery indicator 402 can be indicative of two
conditions that can occur when the dock 100 is connected to either
a wall plug 304 (FIG. 3B) or a data processor 114. A flashing
battery indicator 402 provides actionable feedback by indicating
that the battery within the recorder 104 is being recharged or that
the recorder 104 contains recorded sensor data that has not been
downloaded to a data processor 114. When the battery indicator 402
becomes steadily illuminated it is indicative that the battery
within the recorder 104 is completely charged. However, if a
recorder 104 has stored sensor data the battery indicator 402 will
continue to blink even after the battery has been charged. This can
notify a practitioner that the recorder 104 needs to be connected
to a dock 100 that is connected to a data processor 114 so the
stored sensor data can be transferred off of the recorder 104.
[0057] As previously discussed, it is only after stored sensor data
is transferred or downloaded from the recorder 104 to the data
processor 114, that the recorder 104 can be used to record
additional sensor data. Thus, it should be apparent to a
practitioner that a prolonged flashing battery indicator 402 of a
dock 100 may be indicative of a recorder 104 that is not available
for use. In one embodiment, the battery indicator is a green LED
that can be programmed to flash different sequences to distinguish
between a dock 100 that is charging a recorder 104 and a dock 100
that has a recorder 104 containing sensor data. In alternative
embodiments, the dock includes an indicator to show the status of
the battery within the recorder 104 and a separate indicator to
show the status of data stored on the recorder 104.
[0058] As mentioned above, the icon cluster 106 also includes a
warning indicator 700. This allows the dock 100 to provide
actionable feedback regarding the operational readiness of a
recorder 104. In addition to providing feedback via the power
indicator 306 and the battery indicator 402, the dock 100 includes
hardware and software that is able to perform diagnostic testing of
a recorder 104 connected to the dock 100. The results of the
diagnostic test can be provided as feedback to a user via the
warning indicator 700. As previously discussed, the dock 100
includes dock receiver 108 (FIG. 1) that couples with the recorder
104 to recharge the recorder power supply 212, transfer data from
the recorder 104, and perform diagnostic tests of electronic
components of the recorder 104. As discussed above the recorder 104
includes a memory 210 and a processor 208. In some embodiments, the
dock 100 is programmed to perform a diagnostic test of
communication between the memory 210 and the processor 208. In
other embodiments, the dock 100 performs a test to check the
integrity of the memory 210 . In still other embodiments, the dock
100 performs tests of the recorder power supply 212. In still other
embodiments, the dock 100 verifies that the recorder 104 can
communicate with the dock 100 therefore verifying that the
recorder's microprocessor 208 is functioning properly and verifying
that the connectors 224 in the recorder 104 are not damaged.
[0059] While specific types of diagnostic tests have been described
above, the types of tests should not be construed as limiting. In
other embodiments the dock 100 can be programmed to perform any
number of tests only limited by hardware access and programmers
inventiveness. A failure of any of the diagnostic tests performed
by the dock 100 results in the warning indicator flashing at
periodic intervals. Alternatively, the warning indicator can be
constantly illuminated if there is a failure of any of the
diagnostic tests. In still another embodiment, in order to reduce
troubleshooting the warning indicator can flash in specific
sequences to indicate which diagnostic test was failed. In
particular embodiments, the warning indicator will turn on if the
recorder's power supply 212 is too low or is taking too long to
charge. In other embodiments, the warning indicator will turn on if
the sensor connectors 220 are damaged or if the electronics in the
recorder 104 used to operate the sensor are not functioning
properly. To convey the seriousness of a failed diagnostic test, in
some embodiments the warning indicator 700 is a red LED.
[0060] FIGS. 8A-8D are larger illustrations of icon cluster 106 in
accordance with embodiments of the present invention. FIG. 8A is an
example of the icon cluster 106 where the power indicator 306, the
battery indicator 402 and the warning indicator 700 are flashing
during initialization of the dock 100. FIG. 8B is an example of the
icon cluster 106 when the power indicator 306 is steadily
illuminated while the battery indicator 402 and the warning
indicator 700 are not illuminated or flashing. This provides
feedback to a user by indicating that sufficient power being
supplied to the dock 100 and the recorder 104 is not connected to
the dock 100. FIG. 8C is an example of the icon cluster 106 when
the power indicator 306 is steadily illuminated, the battery
indicator 402 is flashing, and the warning indicator 700 is not
illuminated nor flashing. This feedback indicates to a user that
the dock 100 is receiving sufficient power and either the
recorder's power supply 212 is charging or that the recorder 104
contains recorded sensor data that has not been downloaded. FIG. 8D
is an example of the icon cluster where the power indicator 306 is
steadily illuminated, the battery indicator 402 is steadily
illuminated, and the warning indicator 700 is not illuminated nor
flashing. Such exemplary feedback is indicative that the recorder
104 in the dock 100 is fully charged and is ready to be connected
to a sensor.
[0061] The icon cluster is used to provide actionable feedback to a
user with the intent of minimizing difficulty when troubleshooting
the system while ensuring integrity of data stored on the recorder
104. The use of three different colored LEDs for the power
indicator 306, the battery indicator 402 and the warning indicator
700 should not be construed as limiting as a single multicolored
LED may be used or combinations of various lighting types.
Additionally, the use of only visual feedback should not be
construed as limiting. Other embodiments of the dock 100 can
include both visual feedback as discussed above along with audible
feedback of various frequencies and rhythms.
[0062] FIGS. 9A and 9B are exemplary illustration of docks 100a
that are modular and enable multiple docks 100a to be connected
into a single block that is capable of accommodating multiple
recorders in accordance with embodiments of the present invention.
The illustration of docks 100a-1 and 100a-2 purposefully does not
include details shown in previous illustrations so as to not
obfuscate the modular characteristics of the docks 100a. It should
be understood that docks 100a include features such as, but not
limited to dock receiver 108 (FIG. 1) but for clarity such features
are not included within FIGS. 9A and 9B.
[0063] FIG. 9A includes dock 100a-1 and 100a-2 which are identical
to one another. Each dock 100a-1 and 100a-2 includes a mating arm
that is shown in retracted position as 900a and extended position
900b. In the embodiment shown the mating arm swings between the
retracted position 900a and the extended position 900b via arc
D.sub.1. Additionally, the docks 100a-1 and 100a-2 include socket
904 that is configured to receive the mating arm in extended
position 900b. Joining the modular docks 100a-1 and 100a-2 is
accomplished when mating arm of dock 100a-1 is in extended position
900b and inserted into socket 904 of dock 100a-2 along path D2. As
shown in FIG. 9B, when docks 100a-1 and 100a-2 are pressed
substantially together, the connector 902 from dock 100a-1 is able
to make an electrical connection with a mating feature (not shown)
within dock 100a-2. In one embodiment the connector 902 is a common
off the shelf component such as a male micro or mini-USB connector.
Accordingly, the mating feature within dock 100a-2 would be a
corresponding female micro or mini-USB receptacle. In some
embodiments the mating feature is mounted to a circuit board while
in other embodiments the mating feature is integrated into the case
of the dock 100a-2.
[0064] FIG. 9B shows two modular docks joined together that receive
power from a single wall plug 304. The modular nature of the docks
100a-1 and 100a-2 can alleviate the use of multiple wall plugs 304
as shown in FIG. 3D. The addition of another dock 100a can be
accomplished simply by extending the mating arm from position 900a
to the extended position 900b (FIG. 9A) and inserting the
additional dock 100a onto the mating arm. The previous discussion
of FIGS. 9A and 9B should not be construed to only include the use
of a pivoting mating arm and corresponding socket. Other physical
couplings can be utilized between the respective docks, such as,
but not limited to snap-on connectors and various other plugs and
socket configurations.
[0065] In preferred embodiments, the physical coupling will provide
a robust and secure connection that minimizes any gap between the
connected docks. Furthermore, it is preferred that when the
physical coupling between the docks is engaged, there is minimal
movement of the individual docks with respect to one another. For
example, there is minimal deflection when torsion is applied about
the x-axis between the two docks. In other embodiments, additional
mechanical features such as but not limited to nubs/detents,
ribs/channels, and corresponding dovetail joint features are
included on the mating surfaces of the respective docks to ensure a
secure connection while the combined docks form a rigid and robust
single entity. When combined the plurality of docks creates such a
rigid and robust entity the combined docks are able to be hung from
a wall in order to minimize desk or floor space.
[0066] FIG. 9B further illustrates that the respective docks 100a-1
and 100a-2 each retain icon cluster 106. Thus, when powered from
the single wall plug 304 each dock retains the ability to provide
the previously discussed visual feedback when a recorder (not
shown) is placed on the dock. The embodiment shown in FIGS. 9A and
9B should not be construed as limiting. Other embodiments can
include additional features such as audible feedback in addition to
the previously discussed visual feedback. In still other
embodiments multiple docks can be formed as a single unit rather
than in the modular fashion shown in FIGS. 9A and 9B.
[0067] FIG. 10A is an illustration of elements within a continuous
glucose monitoring system, in accordance with embodiments of the
present invention. To continuously monitor glucose levels within a
fluid the system includes the sensor 102, a transmitter 1002 and a
receiver 1000. The sensor 102 is identical to the previously
discussed sensor in FIG. 1 and the transmitter 1002 includes
transmitter port 1004 that interfaces with sensor port 122. When
connected, power is supplied from a power supply within the
transmitter 1002 to the sensor 102 via contacts made between the
transmitter port 1004 and the sensor port 122. The transmitter
power supply further enables a radio within the transmitter 1002 to
wirelessly relay sensor data to the receiver 1000. In some
embodiments the receiver 1000 is a portable infusion pump while in
other embodiments the receiver is a wireless controller for a
portable infusion pump. In still other embodiments, the signal from
the transmitter is received simultaneously by both a portable
infusion pump and a wireless controller for the portable infusion
pump.
[0068] In some embodiments the receiver 1000 includes a display
1006 that is coupled to a processor (not shown) and a memory (not
shown). The display 1006 is configured to graphically illustrate
the sensor data that was wirelessly relayed from the sensor to the
receiver 1000. This allows a user to visually real-time
fluctuations of their glucose levels as measured at the sensor
location. In some embodiments the sensor is placed into
interstitial fluid thereby supplying Sensor Glucose (SG) data. In
other embodiments the sensor is placed directly in the blood stream
and is able to measure Blood Glucose (BG) data.
[0069] FIG. 10B is an exemplary block diagram of a transmitter 1002
that is connected to either a glucose sensor or a dock, in
accordance with embodiments of the present invention. The
transmitter includes a power supply 1008 that is connected to a
processor 1010 that is configured to processor data from a sensor
interface 1012. The processor 1010 is also coupled to
communications block 1014 and memory block 1016. The memory block
1016 is representative of the various memories associated with the
transmitter 1002. For example, while the processor 1010 may have
some dedicated memory associated with the processor, that memory
would be construed as being part of memory 1016. The memory 1016
that can be used to store program instructions for the various
components of the transmitter 1002, sensor data, or the like.
[0070] In some embodiments the communication block 1014 includes a
radio that transmits sensor data after it is processed by the
processor 10110 to the receiver element 1000 of FIG. 10A. In one
embodiment the radio utilizes a secure proprietary communication
protocol to transmit the sensor data. In other embodiments
established secure wireless communications protocols such as, but
not limited to Bluetooth.TM., Zigbee.TM., or the like maybe
used.
[0071] In some embodiments the transmitter 1002 is compatible with
the previously discussed docks 100, 100a and 100b. This allows the
transmitter 1002 to be placed onto a dock 100, 100a or 100b in a
manner similar to that previously discussed in FIG. 4A. Similarly,
the icon cluster of the dock can be used to convey actionable
feedback to a user regarding the state of the transmitter 1002. In
some embodiments the dock 100, 100a or 100b includes circuitry that
is able to differentiate between a transmitter 1002 and a recorder
104. In other embodiments the respective transmitter 1002 or
recorder 104 includes additional circuitry to indentify itself to
the dock. In still other embodiments, the recorder contains
circuitry that identifies the recorder to circuitry within the dock
Likewise, the transmitter contains circuitry that identifies the
transmitter to circuitry within the dock. Being able to
differentiate between a transmitter and a recorder allows the dock
to properly charge the respective battery. As sensors are worn for
longer periods, it may become important to even differentiate
between a transmitter that is intended to power a sensor for three
to four days and a transmitter that is intended to power a sensor
for seven days or more.
[0072] While the description above refers to particular embodiments
of the present invention, it will be understood that many
modifications may be made without departing from the spirit
thereof. The accompanying claims are intended to cover such
modifications as would fall within the true scope and spirit of the
present invention.
[0073] The presently disclosed embodiments are therefore to be
considered in all respects as illustrative and not restrictive, the
scope of the invention being indicated by the appended claims,
rather than the foregoing description, and all changes which come
within the meaning and range of equivalency of the claims are
therefore intended to be embraced therein.
* * * * *