U.S. patent application number 11/292675 was filed with the patent office on 2006-06-08 for touch screen control for lateral rotation of a hospital bed mattress.
Invention is credited to Gregory W. Branson.
Application Number | 20060117482 11/292675 |
Document ID | / |
Family ID | 35871153 |
Filed Date | 2006-06-08 |
United States Patent
Application |
20060117482 |
Kind Code |
A1 |
Branson; Gregory W. |
June 8, 2006 |
Touch screen control for lateral rotation of a hospital bed
mattress
Abstract
A controller for a patient support surface, such as a mattress
having air bladders used for rotational therapy, has touch screen
control for lateral rotation of a patient. The touch screen
includes graphical user interface display elements for controlling
and displaying the rotational status of the support structure.
Illustrative display elements include a patient icon that can be
rotated to set a desired rotation angle or amount. The patient icon
is rotated by touching the icon with a finger and moving the finger
on the screen to rotate the icon to the desired support surface
rotation setting. Illustrative display elements also include
graphical and/or numerical indicators of time that may be used to
select and indicate a desired dwell time for the support surface in
left, right, and central rotational positions.
Inventors: |
Branson; Gregory W.;
(Batesville, IN) |
Correspondence
Address: |
BARNES & THORNBURG
11 SOUTH MERIDIAN
INDIANAPOLIS
IN
46204
US
|
Family ID: |
35871153 |
Appl. No.: |
11/292675 |
Filed: |
December 2, 2005 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60633863 |
Dec 7, 2004 |
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Current U.S.
Class: |
5/600 |
Current CPC
Class: |
A61G 7/018 20130101;
A61G 7/001 20130101; A61G 7/05769 20130101 |
Class at
Publication: |
005/600 |
International
Class: |
A47B 71/00 20060101
A47B071/00 |
Claims
1. A patient support apparatus, comprising: a patient support
surface capable of being rotated to a first position; a control
system for controlling the rotation of the support surface; a touch
screen coupled to the control system; and a first display element
displayed on the touch screen, the display element corresponding to
the rotational position of the patient support surface and capable
of being rotated by at least one of touching and dragging to an
orientation associated with the first position.
2. The patient support apparatus of claim 1, wherein the first
display element includes a graphical depiction of an axial view of
a patient from at least one of a foot end and a head end.
3. The patient support apparatus of claim 1, further comprising a
second display element capable of being rotated by at least one of
touching and dragging to a second position; and wherein the first
display element and the first position are associated with right
hand rotation relative to the patient and the second display
element and the second position are associated with left hand
rotation relative to the patient.
4. The patient support apparatus of claim 3, further comprising a
third display element capable of being rotated by at least one of
touching and dragging to a central position, the central position
located between the first and second positions.
5. The patient support apparatus of claim 4, further comprising at
least a fourth display element including at least one of a
graphical and a numerical indicator of a dwell time associated with
at least one of right, left, and central positions.
6. The patient support apparatus of claim 5, wherein the at least a
fourth display element includes an indicating element for setting
the dwell time by at least one of touching and dragging the
indicating element to the dwell time.
7. The patient support apparatus of claim 1, wherein the control
system includes a pneumatic control and the patient support surface
includes at least one bladder pneumatically coupled to the
pneumatic control.
8. A system for controlling a patient support surface, comprising:
a touch screen; a controller coupled to the touch screen; and
software enabling the controller to: display a first display
element on the touch screen; monitor touch of the first display
element; rotate the first display element in response to touch; and
command rotation of the support surface based on the rotation of
the first display element.
9. The system of claim 8, wherein the first display element
includes a graphical depiction of an axial view of a person from at
least one of a foot end and a head end.
10. The system of claim 8, wherein the software further enables the
controller to: display a second display element; monitor touch of
the second display element; rotate the second display element in
response to touch; and command rotation of the support surface
based on the rotation of the second display element; wherein the
first display element is associated with rotation of the support
surface in a first direction and the second display element is
associated with rotation of the support surface in a second
direction.
11. The system of claim 10, wherein the software further enables
the controller to: display a third display element; monitor touch
of the third display element; rotate the display of the third
display element in response to touch; and command rotation of the
support surface based on the rotation of the third display
element.
12. The system of claim 11, wherein the software further enables
the controller to display at least a fourth display element
including at least one of a graphical indicator and a numerical
indicator of a parameter associated with at least one of right,
left, and central rotational positions of the support surface.
13. The system of claim 12, wherein the parameter includes dwell
time.
14. The system of claim 12, wherein the software further enables
the controller to: display and monitor touch of the at least one of
a graphical indicator and a numerical indicator; and set the
parameter based on touch of the at least one of a graphical
indicator and a numerical indicator.
15. The system of claim 8, wherein the support surface includes a
hospital bed mattress.
16. A method of controlling rotational parameters of a patient
support surface comprising: displaying graphical elements on a
touch sensitive display screen; monitoring touch of the graphical
elements; moving the graphical elements in response to touch; and
setting a rotational parameter based on the movement of the
graphical element.
17. The method of claim 16, wherein the graphical elements include
an element illustrative of patient rotational position.
18. The method of claim 16, wherein the rotational parameters
includes at least one of a left rotational position, right
rotational position, central rotational position, left dwell time,
right dwell time, and central dwell time.
19. The method of claim 16, wherein the graphical element
illustrates at least one of rotational position and rotational
position dwell time.
20. The method of claim 16, further comprising controlling a
pneumatic control system based on the rotational parameter, the
pneumatic control system capable of inflating and deflating at
least one pneumatic bladder associated with the patient support
surface.
Description
[0001] This application claims the benefit, under 35 U.S.C. .sctn.
119(e), of U.S. Provisional Patent Application Ser. No. 60/633,863
which was filed Dec. 7, 2004 and which is hereby incorporated by
reference herein in its entirety.
BACKGROUND OF THE INVENTION
[0002] The present disclosure relates to a system and method for
controlling patient support surfaces. More particularly, the
present disclosure relates to a system and method for setting and
displaying control parameters for a rotational therapy patient
support surface.
[0003] Rotational therapy typically includes lateral rotation of a
patient support surface for patients needing pulmonary therapy or
decubitus prevention or treatment. The rotatable support surface
typically includes a mattress for a hospital bed that is laterally
rotated by an air support system. Therapeutic air support systems
typically include air bladders that are coupled to a pneumatic
control system. The pneumatic control system selectively supplies
air pressure and/or a vacuum to the bladders so that the patient is
laterally rotated to a desired rotational position.
[0004] Therapeutic air support systems are typically used with a
hospital bed having a bed frame. The pneumatic control system
includes an air handling unit that is mounted to the base of the
bed and a control device mounted, for example, to the bed end rail.
The patient support surface, for example a mattress including air
bladders, is typically supported by the bed deck and is used in the
place of a standard patient mattress.
SUMMARY OF THE INVENTION
[0005] The present invention comprises one, or more of the features
recited in the appended claims and/or the following features which,
alone or in any combination, may comprise patentable subject
matter. A system and method for controlling a patient support
surface may include a touch screen control for lateral rotation of
the patient support surface, for example a mattress having air
bladders used for rotational therapy. The touch screen may include
graphical user interface display elements for controlling and
displaying the rotational status of the support structure. The
display elements may include a patient icon that can be rotated to
set a desired rotation angle or amount. The patient icon is rotated
by touching the icon with a finger and moving the finger on the
screen to rotate the icon to the desired support surface rotation
setting. The display elements also may include graphical and/or
numerical indicators of time that may be used to select and
indicate a desired dwell time for the support surface in left,
right, and central rotational positions.
[0006] According to this disclosure, a patient support apparatus
may include a patient support surface capable of being rotated to a
first position, a control system for controlling the rotation of
the support surface, a touch screen coupled to the control system,
a first display element displayed on the touch screen, the display
element corresponding to the rotational position of the patient
support surface and capable of being rotated by at least one of
touching and dragging to an orientation associated with the first
position, and a second display element capable of being rotated by
at least one of touching and dragging to a second position. The
control system may include a pneumatic control and the patient
support surface may include at least one bladder pneumatically
coupled to the pneumatic control. The first display element may
include a graphical depiction of an axial view of a patient from at
least one of a foot end and a head end, and the first display
element and the first position may be associated with right hand
rotation relative to the patient and the second display element and
the second position may be associated with left hand rotation
relative to the patient. The patient support apparatus may also
include a third display element capable of being rotated by at
least one of touching and dragging to a central position, the
central position located between the first and second positions,
and a fourth display element including at least one of a graphical
and a numerical indicator of a dwell time associated with at least
one of right, left, and central positions. The fourth display
element may include an indicating element for setting the dwell
time by at least one of touching and dragging the indicating
element to the dwell time.
[0007] Also according to this disclosure, a system for controlling
a patient support surface, for example a hospital bed mattress may
include a touch screen, a controller coupled to the touch screen,
and software enabling the controller to display a first display
element on the touch screen, to monitor touch of the first display
element, to rotate the first display element in response to touch,
and to command rotation of the support surface based on the
rotation of the first display element. The first display element
may include a graphical depiction of an axial view of a person from
at least one of a foot end and a head end. In the second
illustrative embodiment the software may further enable the
controller to display second and third display elements, to monitor
touch of the second and third display elements, to rotate the
second and third display elements in response to touch, and to
command rotation of the support surface based on the rotation of
the second and third display elements. The first display element
may be associated with rotation of the support surface in a first
direction, the second display element may be associated with
rotation of the support surface in a second direction, and the
third display element may be associated with rotation of the
support surface to a central position between the first direction
and the second direction. The software may further enable the
controller to display a fourth display element including at least
one of a graphical indicator and a numerical indicator of a
parameter associated with at least one of right, left, and central
rotational positions of the support surface. The parameter may
include dwell time and the software may further enable the
controller to display and monitor touch of the touch screen and to
set the parameter based on touch of the at least one of a graphical
indicator and a numerical indicator.
[0008] A method of controlling rotational parameters of a patient
support surface in accordance with this disclosure may include any
one or more of displaying graphical elements on a touch sensitive
display screen, monitoring touch of the graphical elements, moving
the graphical elements in response to touch, and setting a
rotational parameter based on the movement of the graphical
element. The graphical elements may include an element illustrative
of patient rotational position and the rotational parameters may
include at least one of a left rotational position, right
rotational position, central rotational position, left dwell time,
right dwell time, and central dwell time. The graphical element may
illustrate at least one of rotational position and rotational
position dwell time. The method may further include controlling a
pneumatic control system based on the rotational parameter, and the
pneumatic control system may be capable of inflating and deflating
at least one pneumatic bladder associated with the patient support
surface.
[0009] Additional features, which alone or in combination with any
other feature(s), including those listed above, may comprise
patentable subject matter and will become apparent to those skilled
in the art upon consideration of the following detailed description
of an illustrative embodiment exemplifying the best mode of
carrying out the invention as presently perceived.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The detailed description particularly refers to the
accompanying figs. in which:
[0011] FIG. 1 is a perspective view of a hospital bed system
including the touch screen control system for lateral rotation of
the bed support surface according to the present disclosure;
[0012] FIG. 2 is a plan view of a touch screen layout according to
the present disclosure;
[0013] FIG. 3 is a partial plan view of the touch screen of FIG. 2
illustrating selection of a rotational angle or amount for the
support surface;
[0014] FIG. 4 is a partial plan view of the touch screen of FIG. 2
illustrating selection of a dwell time for a rotational position of
the support surface;
[0015] FIG. 5 is a partial plan view of an alternative touch screen
layout according to the present disclosure;
[0016] FIG. 6 is a block schematic diagram of the touch screen
control system and pneumatic system of FIG. 1; and
[0017] FIG. 7 is a flowchart illustrating software associated with
the touch screen control system of FIG. 6.
DETAILED DESCRIPTION OF THE DRAWINGS
[0018] FIG. 1 illustrates a hospital bed 10 having a therapeutic
support surface, for example a mattress 14 having air bladders 48,
50 (FIG. 6), and a touch screen control system 12 for controlling
lateral rotation of the mattress 14. The hospital bed 10 includes a
base frame 16, an intermediate frame 20 coupled to the base frame
16 by linkages 18, and an articulating deck frame 22 that is
coupled to the intermediate frame 20 and that supports the mattress
14. The bed 10 also includes a head end 24, a foot end 26, a left
side rail 28, and a right side rail 30. The deck frame 22 includes
separate sections that articulate relative to the base frame 16 and
relative to each other, for example, a mattress center section 36
that is height adjustable, and a mattress head section 32 and a
mattress foot section 34 that are adjustable in elevation relative
to the mattress center section 36. A patient control panel 38 is
used to control articulation of the deck frame 22.
[0019] The present disclosure is directed to a system and method
for setting and monitoring lateral rotational therapy of mattress
14. The air bladders 48, 50 of the mattress 14 are used to provide
positioning and/or therapy, for example, rotational therapy,
percussion therapy, vibration therapy, and positioning to assist
turning of the patient. Referring to FIG. 6, the touch screen
control system 12 includes a touch screen 40, an electrical control
system 42, and a pneumatic control system 46. The electrical
control system 42 includes a controller 44 and is electrically
coupled to the touch screen 40 and the pneumatic control system
46.
[0020] The electrical control system 42 provides control and
monitoring of the pneumatic control system 46. The touch screen 40
provides a graphical user interface for setting and monitoring the
electrical control system 42 and the pneumatic control system 46,
which in turn actuate pneumatic aspects of the mattress 14. The
pneumatic control system 46 operates a bladder system 47 associated
with the mattress 14. The bladder system 47 may include, for
example a right rotation bladder 48 and a left rotation bladder 50,
or an alternative arrangement of one or more bladders to provide
desired patient position and therapy. The pneumatic control system
46 is coupled to the right rotation bladder 48 and the left
rotation bladder 50 by pneumatic lines 52. Additionally, pressure
sensors (not shown) or alternative type sensors such as capacitive,
inductive, or optical sensors, may also provide feedback control of
the bladders 48 and 50 to the pneumatic control system 46 or the
electrical control system 42.
[0021] The pneumatic control system 46 generally provides pressure
or vacuum to, or sealing of the pneumatic lines 52 in order to
selectively inflate, deflate, or maintain the inflation of the
bladders 48 and 50. For example, to rotate a patient on the
mattress 14 toward the right, the pneumatic control system 46
deflates the right rotation bladder 48 located under the patient's
right side and inflates the left rotation bladder 50 located under
the patient's left side. Alternatively, only one of or a portion of
the bladders of the bladder system 47 may be actuated by inflation
or deflation to laterally rotate a patient on mattress 14 to
different rotational positions. Additionally, the bladder system 47
may comprise bladders that are associated with the mattress 14 in
an arrangement different from that shown in FIG. 6, as is known in
the art. For example, the bladder system 47 may include vertically
stacked bladders, one of which is normally inflated and another
that is inflated or deflated to provide rotation. Additionally, the
pneumatic control system 46 may also provide other pneumatic
control, for example, to provide percussion, vibration, or other
desired patient therapy or positioning. The pneumatic control
system 46 and the bladder system 47 of mattress 14 may
alternatively include a non-pneumatic mechanical or electrometrical
control and motion system, or a pneumatic system utilizing movement
elements other than bladders.
[0022] Referring to FIG. 2, the touch screen 40 is shown having an
exemplary display arrangement; however, alternative display and
control arrangements may be utilized. The exemplary display
arrangement of the touch screen 40 includes a menu display area 60,
a status display area 62, and other graphical user interface
elements, for example, a start button 64, a stop button 66, and an
alarm silence button 68. The touch screen 40 is of the type that
provides visual display elements as well as a touch sensitive
surface so that particular display elements may be selected or
otherwise manipulated by touching the display surface with a finger
or other object and/or dragging the finger or other object across
the surface. The electrical control system 42 provides signals to
touch screen 40 for displaying the various display elements, and
receives signals from the touch screen 40 relating to touch
selected functions.
[0023] The menu display area 60 may include menu tabs 70 for
selecting between various menu display pages, for example, home,
rotation, percussion, vibration, maximum inflate, turn assist, and
opti-rest. Each menu page such as the home page that is shown in
the menu display area 60 may include informational display elements
as well as display elements that may be selected or otherwise
manipulated by touch in order to set or monitor aspects of the
various functions associated with the menu display pages.
[0024] The exemplary status display area 62 shown in FIG. 2 relates
to rotational therapy and is used for monitoring and controlling
the pneumatic control system 46 and the bladder system 47.
Specifically, the exemplary status area 62 relates to lateral
rotation, percussion, and vibration of mattress 14 and the bladder
system 47 for pulmonary therapy or decubitus preventional
treatment. The exemplary status area 62 is sub-divided into a
rotation display area 72, percussion display area 74, and vibration
display area 76. The exemplary display areas 72, 74 and 76 include
graphical elements for setting and/or monitoring the rotational
position and the dwell time for a right rotational position,
central rotational position, and left rotational position, and the
frequency, intensity, and duration of percussion and vibration
therapy in each of the three positions. A graphical element is
defined as including at least one of a graphic, letter, and number
elements.
[0025] The right rotational position is defined as a lateral
rotational position in which the patient is rotated toward the
right hand side of the patient. The left rotational position is
defined as a lateral rotational position in which the patient is
rotated toward the left hand side of the patient. The central
rotational position is defined as a lateral rotational position in
which the patient is positioned between the right and left
rotational positions. The central rotational position may or may
not be the position in which the patient is laterally parallel with
the base frame 16 of hospital bed 10. The rotational position may
be set and displayed as, for example, a percentage of the full
range of lateral rotation or the lateral rotational angle relative
to the patient (or mattress 14) being laterally parallel to the
base frame 16. A rotational dwell time is also associated with each
of the rotational positions. The dwell time is the length of time
the electrical control system 42 signals the pneumatic control
system 46 to maintain the bladder system 47 in one of the patient
rotational positions before signaling the pneumatic control system
46 to actuate the bladder system 47 to provide another of the
patient rotational positions. The rotational dwell time may be set
and displayed, for example, in units of time such as seconds or
minutes.
[0026] The exemplary rotational display area 72 includes a patient
display element 78, numerical indication 80, and dwell time display
elements 82, 84, and 86 for the right, central and left rotational
positions respectively. The patient display element 78 may be, for
example, a graphical representation of a patient viewed axially
from the foot end 26 of the hospital bed 10 because the touch
screen control system 12 may be located at the foot end 26. The
patient display element 78 may also include labeling of the
patients right side and left side to indicate the direction of
rotation of the patient for the various rotational positions.
[0027] The patient display element 78 provides visual indication of
the amount of selected rotation and the direction of rotation. This
aspect of control system 12 is helpful visually confirming the
actual rotational displacement that will result from a specific
numerical setting. For example, various bed systems use degrees,
percent of maximum rotation, or a different basis for setting the
rotational displacement. Thus, a numerical setting of for example,
45 may anticipate a rotation of 45 degrees, but may actually be
setting 45 percent of the maximum rotation, for example, 18 degrees
for a bed with a maximum rotation of 40 degrees. The patient
display element 78 also provides a visual indication of the
direction of rotation. For example, the exemplary patient display
element 78 shown in FIG. 2 graphically represents a patient viewed
from the approximate vantage point of a person using the control
system 12. Thus the rotation of the patient display element 78
approximately matches the real-world view of the patient direction
of rotation and the amount of rotation.
[0028] FIG. 3 illustrates using the rotation display area 72 of the
exemplary display arrangement of the touch screen 40 to set the
rotational position of the right rotational position of the patient
on the mattress 14. In order to select which of the rotational
positions, right, central, or left is to be set, one of the
position labels 88 located above the numerical indication 80 is
pressed. To set the rotational position, the patient display
element 78 is touched with a finger 79 and the finger is moved
across the surface of the touch screen 40. The electrical control
system 42 and touch screen 40 are programmed to rotate the patient
display element 78 accordingly to the touch and movement of touch
on the patient display element 78 portion of the touch screen
40.
[0029] For example, FIG. 3 illustrates touching with the finger 79
the side of the patient display element 78 labeled as the right
hand patient side and dragging the 78 toward the right hand patient
side in response to the dragging of the finger. Simultaneously, the
electrical control system 42 displays the numerical indication 80
(FIG. 4) of the right rotational position setting, which is also
proportional to the rotation of patient display element 78.
[0030] The central rotational positions and left rotational
position can similarly be set by touching the appropriate position
label 88 and touching and dragging the patient display element 78
to provide the desired amount of rotation as indicated by the
numerical indication 80.
[0031] Referring to FIG. 4, a dwell time 83, 85, and 87 may also be
associated with and selected for each of the rotational positions.
FIG. 4 illustrates touching the right dwell time display element 82
with a finger 79 to set the desired dwell time 83. The exemplary
dwell time display element 82, 84, and 86 include a circular dial
having an arrow pointing to the desired setting 83, 85, and 87 and
labeled along the circumference of the dial in seconds and minutes.
For example, FIG. 4 illustrates touching the arrow portion of the
right dwell time display element 82 and dragging the finger 79
across the surface of the touch screen 40 to set the right dwell
time 83 to 20 minutes. The dwell time 85 and 87 for the central and
left positions can be similarly set using the central dwell time
display element 84 and the left dwell time display element 86.
Alternative graphical elements and arrangements may also be
utilized in place of the exemplary dwell time display elements 82,
84, and 86.
[0032] FIG. 5 illustrates a portion of an exemplary alternative
rotational display area 90 that may be substituted for the display
area 72. The alternative display area 90 includes a central patient
display element 92 for setting and displaying the central
rotational position, a right display element 94 for setting and
displaying the right rotational position, a left display element 96
for setting and displaying the left rotational patient position,
and selectable graphical buttons 98 and 100 for selecting between
symmetric and asymmetric rotation. Alternatively, the display
element 92 may represent the current rotational position of the
patient on the mattress 14, and the right display element 94 and
the left display element 96 may represent the rotational position
settings for right and left patient rotation respectfully.
[0033] FIG. 7 is a flow-chart illustrating the software algorithm
200 associated with the controller 44 of the electrical control
system 42 for enabling the above-described aspects of the touch
screen control system 12 illustrated in FIGS. 2-4. The algorithm
200 begins at step 202. In step 204, the controller 44 commands
display of the graphical elements associated with rotational
settings on the touch screen 40, for example the patient display
element 78, the numerical rotational indicators 80, and the dwell
time display elements 82, 84, and 86. In step 206, the controller
44 determines whether one of the display elements 78, 80, 82, 84,
and 86 is being touched. If the controller 44 determines a display
element is being touched, the algorithm 200 continues at step 208,
else the algorithm 200 continues at step 212.
[0034] In step 208, the controller 44 adjusts the display element
being touched in response to the touching of the touch screen 40.
For example, if the controller 44 determines the patient display
element 78 is being touched, the element 78 is rotated in
accordance with touch of and the movement of touch across the touch
screen 40. In addition, the controller 44 changes the numerical
indication 80 according to the movement of the patient display
element 78. Similarly, if the controller 44 determines one of the
dwell time display elements 82, 84, or 86 is being touched, the
appropriate display element will be changed and displayed according
to the touch of touch screen 40.
[0035] In step 210, the controller 44 stores the rotational
parameter associated with the display element being touched. More
specifically, the left, central, or right rotational position is
set and stored, for example in memory (not shown) associated with
the electrical control system 42, based on the touching of the
patient display element 78 detected by the controller 44, and the
right, central, and left rotational dwell time 83, 85, and 87 is
set and stored if the controller 44 determines that the dwell time
display element 82, 84 or 86 is being touched.
[0036] In step 212, the controller 44 determines whether rotational
therapy is selected, for example by determining that the start
button 64 has been touched on the menu display area 60 of the touch
screen 40. If the controller 44 determines that rotational therapy
is selected, the algorithm 200 continues at step 214, else the
algorithm 200 returns to step 204. In step 214, the controller 44
enables the electrical control system 42 to control the pneumatic
control system 46. For example, the pneumatic control system 46 is
commanded to inflate or deflate the right rotational bladder 48 and
the left rotational bladder 50 of the bladder system 47 in order to
provide the rotation, percussion, and vibration of the mattress 14
according to the selected made and the stored rotational and other
parameters. For example, if rotational therapy is selected, the
controller 44 signals the pneumatic control system 46 to sequence
the bladder system 47 through the right, central, and left
rotational positions, maintaining each position for the respective
dwell time 83, 85 and 87. In step 216, the algorithm 200 is
complete. In addition to the algorithm 200, the controller 44 may
include other software to enable other aspects of the exemplary
display arrangement shown in FIG. 2 and the other functionality of
the electrical control system 42 and the pneumatic control system
46 according to the present invention.
[0037] Although certain illustrative embodiments have been
described in detail above, variations and modifications exist
within the scope and spirit of this disclosure as described and as
defined in the following claims.
* * * * *