U.S. patent application number 10/442498 was filed with the patent office on 2003-11-06 for skin abrasion growth factor fluid delivery system and method.
Invention is credited to Cohen, William, Herrera, Alejandro, Ignon, Roger G..
Application Number | 20030208159 10/442498 |
Document ID | / |
Family ID | 27789063 |
Filed Date | 2003-11-06 |
United States Patent
Application |
20030208159 |
Kind Code |
A1 |
Ignon, Roger G. ; et
al. |
November 6, 2003 |
Skin abrasion growth factor fluid delivery system and method
Abstract
A human growth factor delivery system for use in connection with
dermabrasion includes a source of human growth factors in fluid.
The growth factor fluid may be applied to the target skin area
simultaneously with the step of abrading the skin by a single
handpiece. Furthermore, the fluid is caused to penetrate by a
combination of the abrasive elements, a vacuum, and a positive
pressure applied in bursts, which produces a massaging effect. The
fluid source may be contained in a removable cartridge adapted to
fit within the handpiece. The fluid is drawn from the cartridge by
the vacuum. The vacuum also draws a portion of target skin into a
space of the handpiece for contact with an abrasion element. The
vacuum furthermore draws excess fluid and removed skin cells into a
disposable or reusable canister.
Inventors: |
Ignon, Roger G.; (Redondo
Beach, CA) ; Herrera, Alejandro; (Corona, CA)
; Cohen, William; (Long Beach, CA) |
Correspondence
Address: |
Richard L. Myers
MYERS DAWES ANDRAS & SHERMAN LLP
Suite 1150
19900 MacArthur Blvd.
Irvine
CA
92612
US
|
Family ID: |
27789063 |
Appl. No.: |
10/442498 |
Filed: |
May 20, 2003 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10442498 |
May 20, 2003 |
|
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10315478 |
Dec 10, 2002 |
|
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60361045 |
Mar 1, 2002 |
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Current U.S.
Class: |
604/140 |
Current CPC
Class: |
A61B 2017/00761
20130101; A61B 17/545 20130101; A61B 2017/00893 20130101 |
Class at
Publication: |
604/140 |
International
Class: |
A61M 037/00 |
Claims
What is claimed is:
1. A fluid delivery handpiece, comprising: a body having structure
defining a chamber; a cartridge containing the fluid at a first
pressure, wherein the cartridge is removably supported in the body;
a second pressure source in fluid communication with the chamber; a
third pressure source in fluid communication with the chamber;
wherein: the second and third pressure sources provide a fourth
pressure in the chamber during use; the fourth pressure creates a
pressure differential with the first pressure; and the pressure
differential causes the fluid to flow from the cartridge.
2. The fluid delivery handpiece of claim 1, wherein: at least one
of the second pressure source and the third pressure source
provides a pressure to the chamber in pulses; the other one of the
second pressure source and the third pressure source continuously
provides a steady pressure to the chamber; the chamber has an
opening for sealing engagement with a patient's skin; and the
fourth pressure is a variable pressure with respect to time and
provides a massage to the skin.
3. The fluid delivery handpiece of claim 2, wherein the second
pressure source is a vacuum source that continuously provides a
steady vacuum pressure to the chamber to draw the skin of a patient
into the opening when the chamber is in sealed engagement with the
skin.
4. The fluid delivery handpiece of claim 3, wherein: the third
pressure source is a pressurized source that provides pressurized
pulses to the chamber; and the fourth pressure is a summation of
the second and third pressures, wherein the fourth pressure: rises
to a level equal to or greater than the first pressure and thus
stops the fluid from flowing out of the canister during pulses and
falls to a level below the first pressure between pulses.
5. The fluid delivery handpiece of claim 4, further comprising:
means for adjusting the magnitude of the second pressure; and means
for adjusting a magnitude, duration, and frequency of the pulses;
wherein the fourth pressure facilitates a flow of the fluid from
the canister at a selected rate.
6. The fluid delivery handpiece of claim 3, further comprising an
abrasion element disposed in the opening and adapted for engagement
by the skin.
7. A growth factor delivery handpiece having a proximal and a
distal end, comprising: a body having a vacuum source connection
for connecting to a vacuum; a growth factor cartridge received in
the body; and an applicator cap enclosing the cartridge in the
body; wherein: the applicator cap is at the distal end and has at
least one vacuum delivery port for presenting a vacuum pressure at
an interface of the handpiece with a patient's skin; the applicator
cap includes a pressurized fluid source connection for receiving a
pressurized fluid; and the body and the applicator cap form an
interior vacuum chamber providing fluid communication between the
vacuum source connection and the vacuum delivery port of the
applicator cap.
8. The handpiece of claim 7, wherein: the cartridge has a fluid
permeable applicator through which a growth factor in a liquid form
can pass; and the applicator is in fluid communication with the
vacuum chamber, wherein a vacuum pressure in the vacuum chamber is
less than the pressure inside the cartridge during use, wherein the
growth factor is drawn out of the cartridge through the applicator
by suction.
9. The handpiece of claim 7, further comprising: at least one
pressurized fluid delivery port; wherein the pressurized fluid
delivery port is in fluid communication with the vacuum chamber and
with the pressurized fluid source connection.
10. The handpiece of claim 7, further comprising means for causing
a growth factor to penetrate a portion of the skin of a patient
being treated.
11. The handpiece of claim 7, wherein: the vacuum delivery port is
located on a distal end of the applicator cap; and the handpiece
further comprises: at least one pressure delivery port on the
distal end of the applicator cap; and at least one abrasion element
on the distal end of the applicator cap proximate to the pressure
delivery port.
12. The handpiece of claim 11, wherein: the pressure delivery port
is one of a plurality of pressure delivery ports; the vacuum
delivery port is one of a plurality of vacuum delivery ports; the
pressure delivery ports and vacuum delivery ports are positioned on
the distal end of the applicator cap; the vacuum delivery ports are
disposed circumferentially at positions radially outward from the
pressure delivery ports and the abrasion elements; and the
applicator cap further comprises an opening in which an applicator
of the cartridge is disposed.
13. A dermabrasion and growth factor delivery system for treating
the skin of a patient, comprising: a handpiece having a
dermabrasion means for abrading the skin and a growth factor
delivery means for delivering a growth factor to the skin and for
causing the growth factor to penetrate the skin; a vacuum connected
to the handpiece; a pressurized fluid source connected to the
handpiece; and a control means connected to the vacuum and the
pressurized fluid source for independently controlling a pressure
of a vacuum fluid and a pressure of a pressurized fluid of the
pressurized fluid source.
14. The system of claim 13, the handpiece having a proximal end and
a distal end and comprising: a body having a vacuum source
connection, the vacuum connected to the vacuum source connection; a
growth factor cartridge received in the body; and an applicator cap
enclosing the cartridge in the body; wherein: the applicator cap is
at the distal end and has at least one vacuum delivery port for
presenting the vacuum fluid pressure at an interface of the
handpiece with a patient's skin; the applicator cap includes a
pressurized fluid source connection receiving the pressurized
fluid; and the body and the applicator cap form an interior vacuum
chamber providing fluid communication between the vacuum connection
and the vacuum delivery port of the applicator cap.
15. The system of claim 14, comprising: a disposable or a reusable
debris canister downstream of the vacuum chamber; and wherein the
debris canister is in fluid communication with the vacuum chamber
for collecting excess growth factor and dead skin cells from the
vacuum chamber.
16. The system of claim 14, wherein: the cartridge has a fluid
permeable applicator through which a growth factor in a liquid form
can pass; and the applicator is in fluid communication with the
vacuum chamber, wherein a vacuum pressure in the vacuum chamber is
less than the pressure inside the cartridge during use, wherein the
growth factor is drawn out of the cartridge through the applicator
by suction.
17. The system of claim 14, further comprising: at least one
pressurized fluid delivery port in fluid communication with the
vacuum chamber and with the pressurized fluid source
connection.
18. The system of claim 14, further comprising means for causing a
growth factor to penetrate a portion of the skin of a patient being
treated.
19. The system of claim 14, wherein: the vacuum delivery port is
located on a distal end of the applicator cap; and the handpiece
further comprises: at least one pressure delivery port on the
distal end of the applicator cap; and at least one abrasion element
on the distal end of the applicator cap proximate to the pressure
delivery port.
20. The system of claim 19, wherein: the pressure delivery port is
one of a plurality of pressure delivery ports; the vacuum delivery
port is one of a plurality of vacuum delivery ports; the pressure
delivery ports and vacuum delivery ports are positioned on the
distal end of the applicator cap; the vacuum delivery ports are
disposed circumferentially at positions radially outward from the
pressure delivery ports and the abrasion elements; and the
applicator cap further comprises an opening in which an applicator
of the cartridge is disposed.
21. The system of claim 13, further comprising: means for adjusting
the vacuum fluid pressure and the pressurized fluid pressure; and
means for pulsing at least one of the vacuum fluid pressure and the
pressurized fluid pressure.
22. The system of claim 13, further comprising a pressure burst
timing adjustment mechanism connected to the pressurized fluid
source and enabling an adjustment in a frequency of bursts of the
pressurized fluid in the range from 0 through 100 bursts per
minute.
23. The system of claim 13, further comprising: means for massaging
the skin; and means for causing the growth factor to penetrate into
the skin.
24. A method for simultaneously abrading skin and promoting healing
of the skin, comprising: delivering a growth factor to a portion of
the skin; abrading the portion of the skin; massaging the portion
of the skin to facilitate penetration of the skin by the growth
factor; and wherein the steps of delivering, abrading, and
massaging are performed simultaneously.
25. The method of claim 24, further comprising: providing a
handpiece that holds a growth factor cartridge; providing the
cartridge with an applicator; and wherein the delivering step
further comprises: drawing the growth factor out of the applicator
by establishing a vacuum pressure outside the cartridge relative to
a pressure inside the cartridge.
26. The method of claim 24, the step of causing further comprising
massaging the skin by: applying a vacuum from a first source at a
substantially constant first pressure to the skin; and applying
bursts of pressurized fluid from a second pressurized fluid source
to the skin.
27. The method of claim 26, wherein the steps of applying a vacuum
and applying bursts further comprise manually adjusting at least
one of the first pressure and the second pressure.
28. The method of claim 26, wherein the step of applying bursts
comprises applying bursts at a rate not greater than about 100
bursts per minute.
29. The method of claim 26, wherein the step of massaging comprises
causing a repeated push-pull of the skin by a sum of effects of the
vacuum and the pressurized fluid bursts.
30. The method of claim 26, wherein the step of abrading comprises
bringing the portion of the skin into contact with an abrasion
element.
31. The method of claim 30, wherein the step of delivering further
comprises applying the growth factor at least in part by the
abrasion element.
32. The method of claim 30, further comprising additionally causing
the growth factor to penetrate the portion of the skin by the step
of abrading the portion.
33. The method of claim 24, further comprising causing the growth
factor to penetrate deeper by impinging a pressurized burst of
fluid on the portion.
34. The method of claim 24, wherein the step of causing further
comprises abrading a portion of the skin to which the growth factor
has been applied.
35. The method of claim 24, further comprising removing skin cells
of the skin and at least a portion of the growth factor by:
abrading the skin cells from the skin; and suctioning the skin
cells and the portion of the growth factor by a vacuum.
36. The method of claim 34, wherein: providing a handpiece that
holds a growth factor cartridge; providing the cartridge with an
applicator; and the step of delivering further comprises:
establishing a vacuum pressure outside the cartridge relative to a
pressure inside the cartridge, thereby drawing the growth factor
out of the applicator by the vacuum pressure; wherein the step of
establishing a vacuum pressure outside the cartridge and the step
of suctioning with the vacuum are accomplished by the vacuum.
37. A dermabrasion and growth factor delivery kit comprising: a
first pressurized fluid pump for providing a source of pressurized
fluid; a pressure burst timing control mechanism; and a handpiece
having a pressurized fluid source connection and a vacuum source
connection.
38. The kit of claim 37, further comprising: a pressure gauge; a
pressure adjustment mechanism; a pressurized fluid holding chamber;
and at least one pressure line for connecting the handpiece to the
first pressurized fluid pump, the pressure gauge, and the
pressurized fluid holding chamber.
39. The kit of claim 37, further comprising at least one
replaceable of refillable cartridge containing a fluid growth
factor.
40. The kit of claim 39, further comprising a return fluid canister
for filtering or otherwise collecting skin cells and an excess of
the fluid growth factor.
41. The kit of claim 40, further comprising: a second vacuum fluid
pump; a vacuum adjustment mechanism; a vacuum gauge; and at least
one vacuum line for connecting the handpiece to the second vacuum
fluid pump, the vacuum adjustment mechanism, and the vacuum gauge.
Description
RELATED APPLICATIONS
[0001] This application is a continuation-in-part of U.S. patent
application Ser. No. 10/315,478 filed Dec. 10, 2002, and entitled
"MICRODERMABRASION FLUID APPLICATION SYSTEM AND METHOD", which is
incorporated herein by reference and which in turn claims priority
from U.S. Provisional Application Serial No. 60/361,045 filed on
Mar. 1, 2002, entitled "HUMAN GROWTH FACTOR DELIVERY SYSTEM," which
is incorporated herein by reference.
BACKGROUND OF THE INVENTION AND METHOD
[0002] 1. Field of the Invention
[0003] The invention relates generally to skin or surface abrasion
apparatus and methods.
[0004] 2. Description of Prior Art and Related Information
[0005] It is often desirable to abrade the outer layer or epidermis
of the skin in order to smooth or blend scars, or blemishes caused
by acne for example. In a technique known as microdermabrasion, a
sand or grit is carried by an air flow which is directed against
the skin. The momentum of the grit tends to wear away two to three
cell layers of the skin with each pass of a handpiece. Since
microdermabrasion is intended to wear away cell layers of the skin,
the process tends to create a wound on the target skin area.
[0006] Consequently, a need exists for quickly healing the wounded
area caused by the abrasion procedure in order to reduce trauma as
well as to yield the desired result skin--that is not only
aesthetically pleasing, but healthy as well.
SUMMARY OF THE INVENTION
[0007] In accordance with the present invention, structures and
associated methods are disclosed which address these needs.
[0008] In one aspect, a microdermabrasion apparatus comprises a
supply of abrasion media, a supply of growth material, at least one
handpiece to apply the abrasion media and the growth material to a
target area, and a mechanism for removing the abrasion media from
the target area. The growth material may be dry and thus mixed in
with the abrasion media. The growth material, or additive,
comprises growth factors such as vitamins. A source of oxygen is in
communication with the handpiece. A valve is provided to control a
flow of the oxygen to the handpiece. The mechanism for removal may
comprise a vacuum source disposed downstream from the handpiece.
The apparatus may further comprise a positive pressure source
disposed upstream from the handpiece.
[0009] In another aspect, a microdermabrasion system is provided
comprising separate handpieces for the microdermabrasion media and
the growth material. The system comprises a first supply of
microdermabrasion media and a first handpiece in communication with
the first supply of microdermabrasion media. A second handpiece is
provided in communication with a second supply of growth material.
A mechanism alternatively causes a first flow of the
microdermabrasion media through the first handpiece and a second
flow of the growth material through the second handpiece. A control
unit is coupled to the first handpiece and the second handpiece.
The control unit includes a switch to alternate operation of the
mechanism between the first handpiece and the second handpiece.
[0010] The second supply of growth material may comprise a liquid
having at least one growth factor. A source of oxygen may be
coupled to the liquid. A valve is coupled to the source of oxygen
and adapted to control a flow of oxygen to the liquid. The
mechanism may comprise a vacuum source coupled to both the first
handpiece and the second handpiece, which vacuum source may be
housed in the control unit. The first supply of microdermabrasion
media is also disposed in the control unit. The second supply of
growth material may be disposed in the control unit or carried by
the second handpiece.
[0011] A fluid delivery apparatus is also provided for applying a
fluid to a target skin area. A cartridge is disposed substantially
within a handpiece. The cartridge holds a supply of fluid and
includes an applicator adapted to apply the fluid to a target skin
area. The supply fluid contains at least one growth factor. A
vacuum source is coupled to the handpiece and adapted to draw the
fluid out of the cartridge and through the applicator. The
applicator may comprise a sponge, a roller, a membrane, or any
other material suitable for applying fluid onto skin.
[0012] The handpiece comprises a housing adapted to slidingly
receive the cartridge and a beveled distal portion adapted to
contact the target skin area. The distal portion may include vacuum
ports. The distal portion is adapted to form a seal with the target
skin area. The housing may include a removable cap to facilitate
assembly and removal of the container. A space, or fluid
passageway, is defined within the housing exterior to the
container. The space is in communication with the vacuum source.
The space is sealed off from any area exterior to the handpiece
when the housing forms the seal with the target skin area.
[0013] A method is provided for microdermabrading skin. The method
comprises the steps of abrading a target skin area with
microdermabrasion media, applying growth material to the target
skin area, retrieving the microdermabrasion media from the target
skin area, and retrieving at least a portion of the growth material
from the target skin area. Where the growth material is dry, the
method further comprises the step of mixing the dry growth material
with the microdermabrasion media prior to the applying step.
[0014] The step of abrading a target skin area with
microdermabrasion media comprises the step of applying the
microdermabrasion media to the target skin area with a first
handpiece. The step of applying growth material to the target skin
area comprises the step of applying the growth material to the
target skin area with a second handpiece. The method further
comprises the step of disposing the growth material in an aqueous
solution, and disposing the aqueous solution with the growth
material upstream from the second handpiece. The method further
comprises the step of carrying the aqueous solution with the second
handpiece.
[0015] The step of disposing the aqueous solution with the growth
material within the second handpiece comprises the step of
retaining the aqueous solution with a cartridge carried by the
handpiece. The method further comprises the step of disposing an
applicator on a distal end of the cartridge. The step of applying
the growth material to the target skin area with the second
handpiece comprises contacting the target skin with the applicator.
A sponge applicator, roller applicator, membrane applicator, or
other suitable applicators may be employed.
[0016] In summary, a growth factor delivery system for use in
connection with microdermabrasion includes a source of growth
factors. The growth material may be dry and thus mixed in with the
abrasion media. The dry growth material would therefore be applied
to the target skin area simultaneously with the abrasion media by a
single handpiece. The growth material may comprise a fluid or a gel
to be delivered by a separate handpiece. The fluid source may be
within the handpiece or external thereto. The fluid source may be
contained in a removable cartridge adapted to fit within the
handpiece. Thus, a method and system is provided for using
disposable cartridges of growth fluids.
[0017] In a further aspect, the invention includes a single
handpiece that simultaneously implements dermabrasion, growth
factor fluid delivery, and a massage. The massage and dermabrasion
improve penetration of the fluid growth factor. The massage is
provided by a relatively constant vacuum pressure combined with
bursts of positive pressure fluid directed at the target area of
the patient's skin. The positive pressure bursts cause the
penetration to go deeper into the skin. They also cause a variation
of the overall fluid pressure inside the handpiece when the
handpiece is in sealed contact with the target area of the skin.
Therefore, a massage is provided by a repeated pushing and pulling
effect.
[0018] Alternatively described, the apparatus for providing
dermabrasion, growth factor delivery, and a massage comprises a
handpiece having a body. The body supports a canister having an
internal first pressure and containing a growth factor fluid. The
body also defines a chamber. Second and third pressure sources are
in fluid communication and provide second and third pressures to
the chamber. The second and third pressures may provide a pulsed
fourth pressure that is the sum of the second and third pressures.
When the fourth pressure is lower than the first pressure, the
growth factor fluid flows from the canister and onto the patient's
skin. A low pressure draws the skin of the patient into contact
with an abrasion element of the handpiece. Furthermore, the pulsing
of the fourth pressure also provides a massage.
[0019] The handpiece that implements massage in addition to
abrasion and growth factor fluid delivery, is incorporated into a
treatment system. The system includes a vacuum source and a vacuum
pressure adjustment mechanism. The system also includes a positive
pressure fluid source and a positive pressure adjustment mechanism.
Importantly, the system further includes a pressure burst timing
adjustment device for controlling a rate and a duration of the
positive pressure fluid bursts. The positive pressure bursts in
combination with a relatively constant vacuum source pressure
result in a massaging effect.
[0020] The invention, now having been briefly summarized, may be
better visualized by turning to the following drawings wherein like
elements are referenced by like numerals.
BRIEF DESCRIPTION OF THE DRAWINGS
[0021] FIG. 1 is a schematic view of a preferred embodiment of a
microdermabrasion apparatus;
[0022] FIG. 2 is a schematic view of a further preferred embodiment
of microdermabrasion system having a positive pressure pump;
[0023] FIG. 3 is a schematic view of a preferred embodiment of a
"wet" growth factor delivery apparatus;
[0024] FIG. 4 is a schematic view of a further preferred embodiment
of a wet growth factor delivery apparatus;
[0025] FIG. 5 is an enlarged schematic view of a handpiece of the
preferred wet growth factor delivery apparatus illustrated in FIG.
4;
[0026] FIG. 6 is a schematic view of a combined system including a
microdermabrasion apparatus and a wet growth factor delivery
apparatus;
[0027] FIG. 7 is a schematic view of a further preferred embodiment
of a wet growth factor delivery apparatus;
[0028] FIG. 8 is an exploded, perspective view of a handpiece of
the preferred system illustrated in FIG. 7;
[0029] FIG. 9 is a partially removed side elevation view of a
cartridge having a first preferred applicator;
[0030] FIG. 10 is a partially removed side elevation view of a
cartridge having a second preferred applicator;
[0031] FIG. 11 is a partially removed side elevation view of a
cartridge having a third preferred applicator;
[0032] FIG. 12 is a cross-sectional view of the preferred delivery
apparatus of FIG. 7 in operation;
[0033] FIG. 13 is an axial cross-sectional view of a further
preferred handpiece for a fluid delivery system;
[0034] FIG. 14 is a perspective view of a housing of the handpiece
of FIG. 13;
[0035] FIG. 15 is a perspective view of a further preferred
handpiece for a fluid delivery system;
[0036] FIG. 16 is an axial cross-sectional view of the handpiece of
FIG. 15;
[0037] FIG. 17 is an end view of the handpiece of FIG. 15;
[0038] FIG. 18 is a block diagram illustrating various modules that
may be combined with microdermabrasion to form a combined
system;
[0039] FIG. 19 is an exploded perspective view of a still further
preferred handpiece for improved fluid penetration;
[0040] FIG. 20 is an assembled end view of the handpiece of FIG.
19;
[0041] FIG. 21 is a partial sectional view of the handpiece of
FIGS. 19 and 20 taken along lines 21-21 of FIG. 20;
[0042] FIG. 22 is a partial sectional view of the handpiece of
FIGS. 19 and 20 taken along lines 22-22 of FIG. 20;
[0043] FIG. 23 is a perspective view of the handpiece of FIG. 19;
and
[0044] FIG. 24 is a diagrammatic view of a growth factor fluid
delivery system including the handpiece of FIG. 19.
[0045] The invention and some of its embodiments can now be better
understood by turning to the following detailed description wherein
illustrated embodiments are described. It is to be expressly
understood that the illustrated embodiments are set forth as
examples and not by way of limitations on the invention as
ultimately defined in the claims.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS AND BEST MODE OF
INVENTION
[0046] FIG. 1 is a schematic view of a microdermabrasion apparatus
10 according to the invention. The apparatus 10 includes a unique
supply 20 of microdermabrasion media that is preferably composed of
cutting materials, such as aluminum oxide, crystals or other
microdermabrasive materials, and one or more growth factors or
vitamins. Unlike conventional microdermabrasion approaches which
include a supply that consists of merely cutting material, it will
be appreciated that the inclusion of growth factors, such as
vitamins, gases and moisturizers, for example, facilitates healing
of the treated area. It is to be expressly understood that the
growth factors may include any substance or material that
facilitates the healing of a treated skin area. With growth factors
mixed in with the cutting materials, the growth factors may be
applied to the cut skin area simultaneously with the abrasive
materials. By way of example and not by way of limitation, the
vitamins may include any combination of vitamins A, C, or E.
Further by way of example and not by way of limitation, the growth
factor may include a product that can be purchased under the trade
name of Nouricel manufactured by Advanced Tissues Sciences.
[0047] An oxygen supply 22 provides oxygen which mixes with the
incoming flow of media and air from the media supply 20. A control
valve 24 is coupled to an oxygen inlet conduit 26 leading from the
oxygen supply 22 to a primary inlet conduit 27. A media inlet
conduit 28 extends from the media supply 20 to the primary inlet
conduit 27 which is coupled to a handpiece 31. A return conduit 33
is coupled to the handpiece 31 and a vacuum pump 35. A valve 34 may
be coupled to the return conduit 33. The vacuum pump 35 thus
directs the mixed media through the primary inlet conduit 26 to the
handpiece 31. The vacuum pump 35 may be provided with a gauge 36 to
facilitate monitoring and control of the vacuum pressure. A waste
canister 37 is coupled to the return conduit and adapted to receive
the waste materials drawn from the handpiece 31.
[0048] The handpiece 31 is applied to the target area of a patient
to perform microdermabrasion while administering the growth
factors. Since the microdermabrasion creates an abrasion wound to
the target skin area, the addition of oxygen, in addition to the
growth factors, facilitates healing and a quicker restoration of
the abraded area. The oxygen can thus be mixed in with conventional
microdermabrasion media as well as with other media, such as
vitamins and other growth factors.
[0049] After microdermabrasion is performed with the administration
of the growth factors, the used media is drawn through the return
conduit 33 by the vacuum pump 35. The used media may be directed to
a storage canister 37. The first preferred embodiment of the
apparatus 10 shown in FIG. 1 thus comprises a dry system and an
associated method wherein the growth factors are applied in a dry
form.
[0050] In FIG. 2, a preferred embodiment of microdermabrasion
system 40 is shown in schematic view. The system 40 may include
pressurized input provided by a pressure pump 42. The pressure pump
42 is powered by a power source 44 and may be controlled by a
switch 46, such as a foot switch or a switch provided on the
handpiece 31. In the system 40, the pressure pump 42 is provided
upstream from the supply sources 20, 22 so as to add positive
pressure. The combination of the downstream vacuum pump 35 and the
upstream pressure pump 42 increases the control and velocity
capacity of delivering the cutting material. Air drawn in by the
vacuum pump 35 may be recirculated in the system 40 to provide
positive pressure. The handpiece 31 may include a plurality of
venturi nozzles which produce a jet stream venturi effect.
[0051] Furthermore, the positive pressure pump 42 and vacuum source
35 may be used to create a pneumatic undulating effect on the
target skin area, which facilitates and circulation and healing of
the area. In use, a suction force is applied to the target area and
forms a seal between the distal end of the handpiece 31 and the
target area. The target area and a space within the handpiece thus
form a vacuum chamber With the vacuum source continuously applied,
the suction force from the vacuum source 35 draws the target area
toward or into the handpiece 31. The suction force also draws blood
toward the surface of the skin. Positive pressure from the pump 42
may be simultaneously applied on a target skin, temporarily pushing
the area away from the handpiece 31.
[0052] The positive pressure is preferably in the form of a jet or
stream of pressurized air. The pressurized air is applied in bursts
or pulses that impinge on the target area. The pressurized air also
enters the space in the handpiece 31 that normally forms the vacuum
chamber. Hence, during the bursts or pulses, the pressure in the
space rises. The net result is a rise and fall in pressure in the
space and vacuum chamber. In fact, when the pressurized air has a
large enough flow rate and a high enough pressure, an actual
push/pull effect is caused. The resulting undulating effect
massages the target skin area and thereby increases the
circulation. Massaging in this manner also breaks up fat and
promotes the formation of collagen. At the same time, the target
area is repeatedly and flexibly brought into contact with the
abrasion element. Therefore, while the undulating effect
facilitates dermabrasion, it also promotes healing of the skin as
well. The jet also massages the target area.
[0053] While the undulating effect has been described above as
being provided by a specific combination of vacuum and pressurized
air applied to the vacuum chamber, it is to be explicitly
understood that the undulating effect can be accomplished with any
of a variety of combinations of vacuum and pressurized air. For
example, the vacuum pressure could be pulsed by itself or in
combination with the pressurized air. Thus, the above descriptions
are to be taken by way of example and not by way of limitation.
[0054] In FIG. 3, a preferred embodiment of a growth factor
delivery apparatus 50 is shown in schematic view. In particular, a
"wet" delivery apparatus 50 and associated wet method is
illustrated in FIG. 3. The apparatus 50 includes an oxygen source
52 that is coupled to a supply 54 of growth factors in water. A
valve 56 is provided along an oxygen inlet conduit 58 to control
the inclusion of oxygen. A primary inlet conduit 61 is coupled to
the liquid growth supply 54 and a handpiece 63.
[0055] In operation, oxygen is mixed with the liquid growth supply
54. The oxygenated liquid growth supply is then administered
through the handpiece 63. A vacuum pump 65 draws the used liquid
through a return conduit 67. A waste canister 69 coupled to the
return conduit 67 receives waste materials drawn from the handpiece
63. The apparatus 50 may be provided as a stand-alone apparatus or
in a combined system with a microdermabrasion apparatus as
discussed further below.
[0056] FIG. 4 illustrates a second preferred embodiment of a wet
growth factor apparatus wherein the growth factors are housed in a
handpiece 63b. In FIGS. 4 and 5, elements of structure similar to
those previously discussed are designated by the same reference
numeral followed by the letter "a". Thus, the apparatus 50a
includes an oxygen source 52a that is coupled to a water supply
54a. A valve 56a is provided along an oxygen inlet conduit 58a to
control the inclusion of oxygen. A primary inlet conduit 61a is
coupled to the water supply 54 and a handpiece 63a.
[0057] In operation, oxygen is mixed with the water. The oxygenated
water is then administered through the handpiece 63a. A vacuum pump
65a draws the used liquid through a return conduit 67a. A waste
canister 69a coupled to the return conduit 67a receives waste
materials drawn from the handpiece 63a. The apparatus 50 may be
provided as a stand-alone apparatus or in a combined system with a
microdermabrasion apparatus as discussed further below.
[0058] FIG. 5 is a close-up, schematic view of the handpiece 63a.
In particular, the handpiece 63a includes a growth factor supply 70
that is stored in a vial or cartridge 72. The cartridge 72 is
sealed with a membrane 74 that may be punctured by a needle 76, for
example. An O-ring 78 may be provided to form a seal with the
inserted needle 76. The needle 76 is coupled to a valve 81 that may
be adjusted by an external knob 83 to control the rate at which the
growth supply 70 is introduced to the water 85 flowing through a
primary channel 87, thereby controlling the concentration of growth
factors in the water. As an example and not by way of limitation,
the growth supply 70 may comprise a liquid that is added to the
water via droplets, similar to an intravenous drip line. It should
be noted that the external knob 83 may be replaced by a control at
any location on the handpiece, or positioned remotely. The
handpiece 63a includes a tip portion 90 that facilitates targeted
application of the microdermabrasion media and growth factors. In
particular, a nozzle 92 directs the materials toward an aperture 94
through which a portion of a patient's skin 96 enters. After
application to the skin 93, the used materials are drawn by the
vacuum source 65a through a return line 67a.
[0059] Since growth factors can be expensive, it will be
appreciated that the preferred embodiment illustrated in FIGS. 4
and 5 increases efficiency by enabling a precisely controlled
amount of growth factors to be applied to the water. The valve 81
may be configured to shut off and seal the cartridge 72 thus saving
the unused supply 70 for future use.
[0060] In FIG. 6, a combined system 100 includes a
microdermabrasion apparatus 102 and a wet growth factor apparatus
50. The microdermabrasion apparatus 102 includes an abrasion
handpiece 104 while the wet growth factor apparatus 50 includes a
separate handpiece 63. A common control unit 106 may be employed
for the system 100 and coupled to each handpiece 63, 104. The
control unit 106 may include a common pump system, which may
include a vacuum source and/or a positive pressure source, to
alternatively operate each handpiece 63, 104. A switch 108 may be
provided on the control unit 106 to alternate the operation of the
pump system between the handpieces 63, 104. The microdermabrasion
media may be stored in the control unit 106. The growth material
may be stored in the control unit 106 or in the fluid delivery
handpiece 63 as described above.
[0061] FIG. 7 is a schematic view of a preferred embodiment of a
growth factor fluid delivery system 120 wherein the growth material
is disposed in a handpiece 122. In FIG. 7, a preferred embodiment
of a stand-alone delivery system 120 is illustrated. As discussed
above, however, it is to be expressly understood that the delivery
system 120 may be incorporated into a combined system that also
includes a microdermabrasion apparatus. A tube 124 couples the
handpiece 122 to a vacuum source 126. A water, or fluid, filter 128
is provided on the tube 124. The handpiece 122 includes a
removable, ultrasonic tip 131 that is electrically coupled to a
ultrasound unit 133. It is to be expressly understood that the
ultrasonic tip 131 may be mounted to any of the handpieces
disclosed herein.
[0062] FIG. 8 is a close-up, exploded view of the handpiece 122.
The handpiece 122 includes a housing 135 that defines a chamber 137
for receiving a cartridge 139. The cartridge 139 stores fluid
containing the growth factor(s). The handpiece 122 specifically
depicts a vacuum handpiece 122. However, handpiece 122 can be used
in any system. For example, the handpiece 122 could be implemented
in the system of FIG. 6 in place of handpiece 63. As with the FIG.
6 embodiment, a switch 108 may be provided to enable the user to
select vacuum suction handpiece 122, and/or the positive pressure
handpiece 104. In the preferred embodiment, the vacuum suction is
applied continually while the positive pressure is applied
intermittently. An inner portion 142 of the housing 135 is
configured to removably secure the cartridge 139 without sealing
off the tube 124. For example, the housing inner portion 142 may
include axially extending tabs 144 which are radially spaced apart
from each other. A fluid passageway 146 is defined between an outer
surface 148 of the cartridge 139 and the inner surface 149 of the
housing 135, as further shown in FIG. 12. Since the fluid
passageway 146 is not sealed from the tube 124, the passageway 146
is in constant fluid communication with the tube 124.
[0063] Prior to assembly, the cartridge 139 may be provided with a
removable cap 151 which covers an applicator 153 located at a
distal end 155 of the cartridge 139. With the cap 151 removed and
the cartridge 139 inserted into the chamber 137, a removable
handpiece tip 157 is coupled to the housing 135. As an example and
not by way of limitation, the tip 157 may include internal threads
that register with external threads 159 on the housing 135. A
variety of other securing mechanisms, including for example,
snap-fit or bayonet type fasteners, may be used that allow for the
tip 157 to be removed. The tip 157 defines a central hole 162
through which the applicator 153 is disposed. A plurality of vacuum
ports 164 are disposed radially around the central hole 162.
[0064] FIGS. 9-11 illustrate different applicators 153-1, 153-2,
153-3, respectively, that may be employed. A variety of other
applicators may be employed so long as they can apply the fluid
within the cartridge onto a target skin area. For example, in FIG.
9, a roller, or ball, 153-1 applicator is provided. A sponge
applicator 153-2 is employed in FIG. 10 while a membrane applicator
153-3 is illustrated in FIG. 11.
[0065] For simplicity, elements in the embodiment of FIG. 12, which
are analogous to those in the previous embodiment, are designated
by the same reference numeral followed by the letter "b". FIG. 12
is an axial, cross-sectional view of the handpiece 122b in
operation. The cartridge 139 is configured within the handpiece
122b such that as the handpiece 122b is applied to a target area
166b, the applicator 153b contacts the skin 166b. In operation, the
vacuum source creates a suction force in a proximal direction as
indicated by arrow 168. This helps draw fluid out of the cartridge
139b, which fluid is applied onto the skin 166b by the applicator
153b. The suction force also draws the isolated piece of skin
toward the applicator 153b. The ultrasonic tip 157 facilitates
absorption of the growth factors by opening the pores of the skin.
The vacuum source removes any excess fluid by drawing the fluid
along the fluid passageway 146b into the tube 124.
[0066] In FIGS. 13 and 14, the optional ultrasonic tip is omitted
in a further preferred embodiment 220. Instead, the housing 222
includes an integral tip 224. In FIG. 14, interior ribs 226 are
provided which securely receive the cartridge 139.
[0067] A further preferred embodiment of a handpiece 320 is
illustrated in FIGS. 15-17. For simplicity, elements in this
embodiment which are analogous to those in the previous embodiment
are designated by the same reference numeral followed by the letter
"c". The applicator is generally referenced by the numeral 153
since it may comprise a variety of different structures as
described above, for example, in connection with FIGS. 9-11. The
handpiece 320 includes a housing 370 that includes an integral tip
372. The housing 370 defines a lateral slot 374 large enough for
inserting and removing a cartridge 139c. Sealing elements 376
provided around the slot 374 form a seal with the inserted
cartridge 139c so as prevent leakage of any fluid in the fluid
passageway 146c. The distal tip 372 defines vacuum ports 164c. The
tip 372 also includes an annular, beveled edge 378. When viewed in
profile as shown in FIG. 16, the beveled edge 378 is concave with
respect to the skin 366, thereby causing the target area to move
closer to the applicator 153 when the handpiece 320 is pressed
against the skin 366. In addition to being beveled, the distal-most
portion of the tip 372 is rounded to facilitate smooth travel over
the surface of the skin while still maintaining a seal.
[0068] With respect to FIGS. 7-17, the growth material has been
predominantly described as being stored in the handpieces 122, 320.
However, the growth material can be stored remotely such as in the
control units 106, 126 as they may be used in combination with the
embodiments of FIGS. 7-17.
[0069] A modular microdermabrasion system 400 according to the
invention is illustrated in FIG. 18. For example, an apparatus
according to the invention may comprise a microdermabrasion module
410 in combination with a growth factor module 420. As discussed
above in connection with FIG. 6, the microdermabrasion 410 and
growth factor module 420 may be provided in a single unit (shown as
106 in FIG. 6). In addition to the microdermabrasion module 410 and
the growth factor module 420, an apparatus according to the
invention may also comprise an enhancer module 430 that enhances
the application and/or absorption of the growth factors. As
examples and not by way of limitation, the enhancer module 430 may
comprise a vacuum 432, ultrasound 434, and/or a pressure spray 436.
It is to be expressly understood that the enhancer module 430 may
comprise any mechanism or procedure that can massage the skin,
provide an undulating effect, open pores, or affect the target skin
area in any other manner so as to enhance the reception of the
growth factors in order to promote healing. It is to be further
understood that any such mechanism included in the enhancer module
430, such as the vacuum 432 or ultrasound 434, may be employed
individually or in combination with other mechanisms. For example,
an apparatus according to the invention may include a pressure
spray 436 to "push" the skin, a vacuum 432 to "pull" the skin, and
an ultrasonic device 434 to open the skin's pores.
[0070] A still further preferred embodiment of a handpiece 520 is
shown in the exploded view of FIG. 19. This embodiment has many
features similar to the embodiments described above. Where an
element substantially corresponds to one previously described, the
same number is used with an appended lowercase "d". For example, a
cartridge 139d of the embodiment of FIG. 19 may be the same as the
cartridge 139 shown in FIGS. 8-11. However, some structural
differences of particular importance to the embodiment of FIG. 19
are shown.
[0071] The handpiece 520 has a housing 522 comprising a body 525
and an applicator cap 528. The housing 522 has a proximal end 531
and a distal end 534. The body 525 has a chamber 537 defined by
inner wall structures of the housing 522 similar to those in the
embodiments of FIGS. 8 and 12-14. Thus, the inner chamber 537 is
sized and shaped to receive the cartridge 139d, which is held in
the housing 522 by the applicator cap 528. This cap 528 has a
positive pressure source connection portion 538. This connection
portion 538 has a mounting portion 540 with an O-ring 543 supported
thereon for sealed mounting of the cap 528 on a distal end 544 of
the body 525. The connection portion 538 also has a positive
pressure fluid source connector 546 for receiving a pressurized or
positive pressure fluid such as air. The applicator cap 528 further
has an applicator tip 549 removably mounted on a distal end 552 of
the positive pressure source connection portion 538. The mounting
portion 540 thus has a size to provide a mating fit with the body
525.
[0072] FIG. 20 shows a distal end view of the assembled handpiece
520 of FIG. 19. As shown, the applicator tip 549 has pressure
delivery ports 558 that are in fluid communication with the
positive pressure fluid source connector 546 for delivering
pressurized air to the distal end 534 of the handpiece 520. The
distal end 534 provides an interface between the handpiece 520 and
a surface of the patient's skin 166 similar to that which is shown
in FIG. 12.
[0073] The handpiece 520 of FIGS. 19 and 20 also has a vacuum
source connection 564 at a proximal end 531. As in the previously
described embodiments, an inner surface 567 of the body 525 is not
sealed to an outer surface 570 of the cartridge 139d. Thus, a fluid
passageway 573 is provided inside the housing 522 between the
housing 522 and the cartridge 139c, as best shown in the partial
sectional view of FIG. 21.
[0074] Vacuum delivery ports 576 are provided in the applicator tip
549 and are in fluid communication with the vacuum source
connection 564 when the handpiece 520 is in its assembled state.
Appropriate vacuum connecting passageways 579 are provided through
the positive pressure source connection portion 538 of the
applicator cap 528. Thus, the vacuum delivery ports 576, the
connecting passageways 579, and the passageways 573 in the body 525
at least in part form a vacuum chamber 582 within the handpiece.
This chamber 582 provides for fluid communication between the
vacuum source connection 564 at the proximal end 531, and the
vacuum delivery ports 576 at the distal end 534 of the handpiece
520.
[0075] When a vacuum is applied to the handpiece and the distal end
534 is placed in sealed contact with a patient's skin 166c, a
vacuum pressure is established in the chamber that is less than the
external atmospheric pressure. A pressure inside the cartridge 139d
is also originally at atmospheric pressure. Thus, when a vacuum is
applied, the vacuum pressure in the vacuum chamber 582 within the
handpiece is also less than the pressure inside the cartridge 139d.
Furthermore, the applicator 153d is fluid permeable and is also in
fluid communication with the vacuum chamber 582. Therefore, a fluid
585 within the cartridge 139d is drawn through the applicator 153d.
Since the vacuum also draws a portion of the skin 166d into a
distal portion 588 of the vacuum chamber 582 and into contact with
the applicator 153c, this fluid 585 is wiped or otherwise delivered
onto the skin 166d. It should be noted that while the applicator
153d is shown as a ball type applicator, the applicator 153d can
alternatively comprise any other type of applicator, including a
sponge or a membrane type as shown in FIGS. 9-11.
[0076] While the pressure of the vacuum source is adjustable, it is
preferably maintained at a constant level. On the other hand, the
pressure of the positive pressure fluid source connection 546 is
preferably applied in pulses or bursts of selected intensity,
duration, and frequency. The frequency of these bursts will
typically be in a range from 0 to 100 bursts per minute. As shown
in the sectional view of FIG. 22, the pressure delivery ports 558
are in fluid communication with the distal portion 588 of the
vacuum chamber 582. Furthermore, positive pressure channels 591
provide fluid communication between the positive pressure source
connection 546 and the positive pressure delivery ports 558.
Therefore, the pressure in the vacuum chamber 582 varies as the
bursts occur. Particularly, the pressure in the vacuum chamber 582
is generally a summation of the pressure effects from the constant
vacuum source and the pulsating positive pressure source.
[0077] Therefore, as the positive pressure fluid is pulsed from the
source, the pressure in the vacuum chamber 582 will at least cycle
from a low to a high pressure. In one aspect this may mean cycling
between one low pressure and a second low pressure. Under
conditions of bursts having sufficiently high positive pressures
and volumes, the result will be an actual push and pull effect on
the portion of the skin 166d that is in direct, sealed fluid
communication with the vacuum chamber 582. With even higher volume
and pressure bursts, a cycle having a low pressure push and a high
pressure push may be achieved. It should be noted that the angle
and the configuration of the pressure delivery ports 558 may also
contribute to a massage effect by directing jets of the positive
pressure fluid onto the skin 166d. Furthermore, a timewise adjusted
burst of pressurized air through the pressure delivery ports 558
can cause deeper penetration of the fluid 585 into a treated area
of the skin 166d.
[0078] Alternatively described with reference to FIGS. 21 and 22,
the apparatus of the present invention comprises the body 525 and
the cartridge 139d removably supported in the body 525. The
cartridge 139d has a first pressure P1 inside. The body 525 also
defines the chamber 582. A second pressure source having a second
pressure P2 is in fluid communication with the chamber 582. A third
pressure source having a third pressure P3 is also in fluid
communication with the chamber 582. The second and third pressures
P2, P3 combine to provide a fourth pressure P4, which is generally
a summation of the second and third pressures P2, P3. The fourth
pressure P4 provides a pressure differential relative to the first
pressure P1. This pressure differential in turn causes the fluid
585 to flow from the cartridge 139d.
[0079] Preferably one of the second and third pressures sources
provides pressure to the chamber in pulses. The other of the
pressure sources provides a steady, continuous pressure to the
chamber. Thus, the fourth pressure varies or cycles with the pulses
over time. This cycling has the advantage of providing a massage to
the skin 166d. Preferably, the net effect is a suction effect, even
if the skin 166d experiences both push and pull. In this way, the
pressure source providing the suction pressure acts to draw the
skin 166d into the distal space 588 when the chamber is in sealed
contact with the skin 166d.
[0080] The pressure differential can be advantageously adjusted to
affect the flow of the fluid 585 out of the canister 139d. It
should be noted that in a least one case the fourth pressure P4
rises to a level equal to or greater than the first pressure P1 and
thus stops the fluid from flowing out of the canister during
pulses. The fourth pressure P4 also falls to a level below the
first pressure P1 between the pulses. As can be appreciated, the
second and third pressure sources are preferably adjustable either
electrically and/or manually to provide a desired magnitude for
each of the second and third pressures P2, P3. Furthermore, the
pressure source providing pulsed pressure may be adjusted with
regard to the duration and frequency of the pulses. Thus, a flow
rate may be selected by the combination of adjustments. Still
further, penetration of the fluid 585 into the skin may be
advantageously improved by selective adjustment of the pressures,
duration, and frequency.
[0081] The pulsing or repeated bursts cause a massaging effect as
the fluid 585 is worked into pores of the skin 166d. This massaging
action has been found to cause improved penetration of the fluid
585 into the skin. Such penetration is of particular interest when
applying a fluid 585 that contains growth factors such as hormones,
vitamins, or oxygen, for skin cell regeneration and healing.
[0082] A further advantage of the massaging effect is that it helps
to break up fat and promote collagen growth below the skin 166d.
The vacuum component of the massaging effect has the advantage of
drawing blood towards the surface of the skin 166c, which also
promotes healing.
[0083] As shown in FIG. 20, abrasion elements 593 can be disposed
on the applicator tip 549. These abrasion elements are preferably
positioned in a distal end 534 and face distally of the vacuum
chamber 582. The position and function of the abrasion elements 593
of this embodiment are similar to those disclosed in copending U.S.
application Ser. No. 09/699,220 filed on Oct. 27, 2000 and entitled
"APPARATUS AND METHOD FOR SKIN/SURFACE ABRASION", which is
incorporated herein by reference. The abrasion elements 593 are
disposed for contacting a portion of the skin 166d that is drawn
into the distal space 588 when a vacuum is applied to the handpiece
520.
[0084] One purpose of the abrasion elements 593 is to provide an
additional means for causing penetration of the fluid 585.
Specifically, the abrasion elements 593 remove dead skin cells from
the skin 166d and thereby open the surface and the pores of the
skin 166d. In this way, abrasion by the abrasion elements 593
facilitates penetration of the fluid 585 into the skin 166d. At the
same time, the abrasion elements 593 help apply the fluid 585 on
the skin 166d.
[0085] It should be noted that the positions of the applicator
153c, the abrasion elements 593, the pressure delivery ports 558,
and the vacuum delivery ports 576 are advantageously selected to
provide effective treatment. It should further be noted that the
vacuum delivery ports 576 are positioned circumferentially,
radially outward from the other ports, abrasion elements 593, and
applicator 153d. With the ports 576 thus positioned, any dead or
abraded skin cells and excess fluid 585 are more likely to be
suctioned into the ports 576 on the trailing side of the handpiece
520 as it is moved over the surface of the skin 166d.
[0086] The vacuum and pressure delivery ports 576, 558 are
generally evenly distributed on the distal end 534 of the handpiece
520. However, the pressure delivery ports 558, as a whole, are
located more centrally. The applicator tip has a recess generally
corresponding to the distal space 588 in the distal end 534. This
recess is surrounded by an outer wall 594 having a distal edge 595.
This distal edge 595 may be beveled or rounded to improve patient
comfort when being passed over the patient's skin 166d. This edge
595 will typically lie in a plane to promote sealing with the
patient's skin 166d.
[0087] The portion of the skin 166d that is being treated is
permitted to oscillate farther in an up and down direction in the
center of the recess than at its edges since this central portion
is not restricted by the wall 594. The positive pressure ports 558
are thus located radially inwardly relative to the vacuum ports 576
to advantageously correspond to the central portion of the skin
166d that is permitted to oscillate farther.
[0088] Advantageously, the applicator tip 549 can be removed and
replaced by a new applicator tip having new or different abrasion
elements 593. Alternatively, the applicator tip can be made
integral with the remainder of the applicator cap 528.
[0089] The applicator 153d of the cartridge 139d is located to
register with an opening 596 in the center of the applicator tip
549. With the applicator 153d in this center location, the
dermabrasion will occur on both the leading and the trailing sides
of the applicator 153d as the fluid 585 is delivered to the skin
166d in a given sweep across the skin 166d. Thus, improved abrasion
and penetration are provided. Furthermore, the result is
simultaneous abrasion, application of the growth factor fluid 585,
and a massage with a single handpiece 520.
[0090] FIG. 23 is a perspective view showing the handpiece 520 of
the embodiment of FIGS. 19-22 fully assembled with a pressure line
597 connected to the positive pressure source connector 546.
[0091] FIG. 24 is a diagrammatic view showing a system 610 in which
the handpiece 520 can be used. The other embodiments or the
handpieces described above may alternatively be used in the system
610. However, some of the handpieces may require modification in
order to be properly used in the system 610. In particular, the
system 610 can be embodied and sold as a kit including one or more
of the elements shown in FIG. 24. One preferred embodiment of the
kit includes a portion of the system outlined by box 612. This kit
will typically include a positive pressure pump 613 providing a
positive pressure first fluid source, a pressure adjustment
mechanism 616, a pressure gauge 619, a positive pressure fluid
holding chamber 622, a pressure burst timing adjustment mechanism
625, and the handpiece 520. The kit defined by the box 612 will
also include pressure lines 596 for interconnecting elements of the
system 610. The kit may also include a filter or collection
canister 631 for catching debris including skin cells removed
during treatment. The filter 631 may be integral with the handpiece
520, added to the handpiece 520, or placed in a vacuum line 633.
The filter 631 may be made to be removable in order to facilitate
disposal and replacement of the filter. Alternatively, the filter
may be made to be capable of cleaning and reuse. The filter 631 is
placed downstream of the applicator tip 549 so as to catch the
excess fluid 585 and the skin cells. The kit defined by the box 612
can be retrofitted to existing systems, which already have a vacuum
pump.
[0092] Alternatively, a kit may include the whole system 610.
Specifically, the kit can include the elements of box 612, and can
further include a vacuum pump 634, a vacuum adjustment mechanism
637, and a vacuum gauge 640. Of course, the system will also
include vacuum lines 633 when the vacuum pump 634 and associated
equipment are included.
[0093] In use, the pressure adjustment mechanisms 516, 537 can be
selectively adjusted to provide the desired suction and pressure,
respectively. The pressure adjustment mechanisms can also be
selectively adjusted to enhance patient comfort during treatment.
It is to be understood that these adjustments are preferably
effectuated manually. However, automatic or semi-automatic
adjustment by electrical or computer means is also contemplated.
The pressure burst timing release adjustment mechanism 625 can also
be similarly adjusted to produce an effective massage for
increasing penetration of the growth factor fluid 585 into the skin
166d.
[0094] It will be appreciated that in these embodiments 120, 220,
320, the cartridge may be easily assembled and disassembled. A
system and method is thus provided for employing disposable
cartridges in fluid delivery handpieces. Once the fluid growth
fluid is depleted, an old cartridge may be easily removed and
discarded, and replaced with a new loaded cartridge.
[0095] In all the preferred embodiments, it will be appreciated
that a method and system is provided for effective delivery of
growth materials to an abraded area. Whether the growth material is
dry and mixed in with the abrasion media or wet and delivered
separately, the abraded skin area is immediately treated with the
growth material so that the growth factors enter into pores of the
skin. Such instantaneous application of the growth factors leads to
more efficacious treatment and, thus, facilitates quicker healing
than conventional techniques.
[0096] The efficiency provided by the methods and apparatuses
according to the invention also leads to cost savings as patients
can avoid not only a second trip to the treatment facility, but
expensive lotions and vitamins as well. Though patients may be
encouraged to follow up an abrasion process with vitamins, lotions,
and other skin care products, the necessity of such products will
be significantly reduced as the instantaneous application of growth
factors provides the most effective healing by penetrating the open
pores of an abraded area.
[0097] Many alterations and modifications may be made by those
having ordinary skill in the art without departing from the spirit
and scope of the invention. Therefore, it must be understood that
the illustrated embodiments have been set forth only for the
purposes of examples and that they should not be taken as limiting
the invention as defined by the following claims. For example,
notwithstanding the fact that the elements of a claim are set forth
below in a certain combination, it must be expressly understood
that the invention includes other combinations of fewer, more or
different ones of the disclosed elements.
[0098] The words used in this specification to describe the
invention and its various embodiments are to be understood not only
in the sense of their commonly defined meanings, but to include by
special definition in this specification the generic structure,
material or acts of which they represent a single species.
[0099] The definitions of the words or elements of the following
claims are, therefore, defined in this specification to not only
include the combination of elements which are literally set forth.
In this sense it is therefore contemplated that an equivalent
substitution of two or more elements may be made for any one of the
elements in the claims below or that a single element may be
substituted for two or more elements in a claim. Although elements
may be described above as acting in certain combinations and even
initially claimed as such, it is to be expressly understood that
one or more elements from a claimed combination can in some cases
be excised from the combination and that the claimed combination
may be directed to a subcombination or variation of a
subcombination.
[0100] Insubstantial changes from the claimed subject matter as
viewed by a person with ordinary skill in the art, now known or
later devised, are expressly contemplated as being equivalently
within the scope of the claims. Therefore, obvious substitutions
now or later known to one with ordinary skill in the art are
defined to be within the scope of the defined elements.
[0101] The claims are thus to be understood to include what is
specifically illustrated and described above, what is
conceptionally equivalent, what can be obviously substituted and
also what incorporates the essential idea of the invention.
* * * * *