Constant pressure syringe for surgical use

• US 9,744,275 B2
• Filed: 12/08/2009
• Issued: 08/29/2017
• Est. Priority Date: 10/06/2006
• Status: Active Grant

• Current Assignee: Lipocosm LLC
• Original Assignee: Lipocosm LLC
• Inventors: Khouri, Roger K., Kuru, Murat
• Primary Examiner(s): Zalukaeva, Tatyana
• Assistant Examiner(s): Klein, Benjamin
• Application Number:
  US12/633,477
• Publication Number:
  US 20100137841A1
• Time in Patent Office: 2,821 Days
• Field of Search: 604119, 604311, 604542
• CPC Class Codes: A61M 1/67 Containers incorporating a piston-type member to create suction, e.g. syringes cupping glasses A61M1/08; with a flexible member creating suction A61M1/68
• CPC Class Codes: A61M 1/71 Suction drainage systems containers therefor A61M1/60, A61M1/64; negative pressure wound therapy systems A61M1/90
• CPC Class Codes: A61M 1/81 Piston pumps, e.g. syringes
• CPC Class Codes: A61M 1/84 Drainage tubes; Aspiration tips for negative pressure wound therapy A61M1/90; for surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/87 Details of the aspiration tip, not otherwise provided for
• CPC Class Codes: A61M 1/89 Suction aspects of liposuction surgical cutting instruments A61B17/32
• CPC Class Codes: A61M 1/892 with treatment of the collected fat
• CPC Class Codes: A61M 1/895 with means for reinjection of collected fat
• CPC Class Codes: A61M 2202/0021 removed from and reintroduced into the body, e.g. after treatment
• CPC Class Codes: A61M 2202/08 Lipoids
• CPC Class Codes: A61M 2205/073 Syringe, piston type
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: A61M 5/14216 Reciprocating piston type
• CPC Class Codes: A61M 5/1452 pressurised by means of pistons
• CPC Class Codes: Y10T 137/7838 Plural
• CPC Class Codes: Y10T 137/87249 Multiple inlet with multiple outlet

Abstract

A closed system for harvesting fat through liposuction, concentrating the aspirate so obtained, and then re-injecting the concentrated fat into a patient comprises as its main components a low pressure cannula having between about 7 to 12 side holes of about 1-2 mm by 2.0 to 4.0 mm, a spring loaded syringe holder with a constant force or coiled ribbon spring to apply a substantially constant pressure over the full excursion of the plunger, and a preferably flexible collection bag which is also preferably graduated, cylindrical over most of its body and funnel shaped at its bottom, all of which are connected through flexible tubings to a multi-port valve. The multi-port valve has two flutter/duck bill valves which restrict the fluid flow to a one way direction which effectively allows the syringe to be used to pump fat out of a patient and into a collection bag in a continuous manner. After the bags are centrifuged to concentrate the fat, the excess fluids are separated and the valve is re-connected to permit the syringe pump to reverse fluid flow to graft the concentrated fat back into the patient.

Claims

1. A syringe driver device, comprising:

a housing for engaging a body of a syringe, wherein the housing extends along an axis that is parallel to the body of the syringe when the syringe is engaged with the housing, and wherein the housing includes an opening in a side of the housing extending along the axis of the housing;

a bracket for engaging a plunger of the syringe, wherein the bracket extends through the opening in the housing transverse to the axis of the housing; and

a spring attached to the bracket, the spring being biased to move the bracket and thereby withdraw the plunger from the body of the syringe at a constant force.

2. The syringe device of claim 1 wherein the spring comprises a constant force spring.

3. The syringe device of claim 2 wherein the constant force spring comprises a coiled ribbon spring.

4. The syringe device of claim 2 further comprising a casing for housing the constant force spring.

5. The syringe device of claim 4 wherein the constant force spring comprises a coiled ribbon spring.

6. The syringe device of claim 5 wherein the opening guides movement of the bracket as the bracket moves in an aspirating direction.

7. The syringe device of claim 1 further comprising a casing for housing the spring.

8. A device comprising:

a syringe having a proximal end and a distal end;

a plunger slidably received within a body of the syringe and having a first end and a second end, wherein the second end of the plunger extends beyond the distal end of the syringe body;

a housing engaging an outer surface of the syringe body, wherein the housing includes a first opening and a second opening positioned on substantially opposite sides of the syringe body;

a bracket engaging the second end of the plunger beyond the distal end of the syringe body, wherein the bracket extends transverse to the syringe body and extends through the first opening and the second opening;

wherein the bracket is moveable between a first position in which the first end of the plunger is adjacent to a proximal end region of the syringe and a second position in which the first end of the plunger is adjacent to a distal end region of the syringe; and

a spring connected to the bracket and extending to a distal region of the housing, wherein the spring is configured to move the bracket from the first position to the second position at a constant force.

9. The device of claim 8, wherein the housing is releasably engaged to the outer surface of the syringe body and the bracket is releasably engaged to the plunger.

10. The device of claim 8, wherein the spring includes a coiled ribbon spring.

11. The device of claim 8, wherein moving the bracket from the first position to the second position aspirates the syringe.

12. The device of claim 8, wherein the housing engages a distal end of the syringe body.

13. The device of claim 8, wherein the syringe is removably mounted in the housing.

14. The device of claim 8, wherein the spring applies a substantially constant force to the bracket as the bracket moves the plunger from the first position to the second position to aspirate the syringe.

15. The device of claim 8, wherein movement of the bracket from the first position to the second position defines a stroke length of the bracket and a stroke length of the plunger, and wherein the spring applies a substantially constant force on the bracket along the entire stroke length of the bracket to cause a substantially constant aspirating pressure within the syringe as the plunger moves along the stroke length of the plunger.

16. A device comprising:

a housing located at a proximal region of the device, wherein the housing is dimensioned to receive a distal portion of a syringe, and wherein the housing extends along an axis that runs parallel to the syringe when engaged with the housing, and wherein the housing includes a slot formed in a side of the housing;

a bracket slidably connected to the housing, wherein the bracket extends transverse to the axis of the housing and includes a gripping portion that extends through the slot;

a spring operably coupled to the bracket and extending from the bracket to a distal region of the device; and

a casing located at the distal region of the device, wherein the casing contains at least a portion of the spring,

wherein the bracket is slidable between a proximal region and a distal region of the housing, and the spring is configured to apply a substantially constant force on the bracket to slide the bracket from the proximal region to the distal region of the housing.

17. The device of claim 16, wherein the spring includes a coiled ribbon spring.

18. The device of claim 16, wherein the gripping portion includes a ring.

19. The device of claim 16, wherein the gripping portion includes a curved surface.

20. The device of claim 16, wherein the housing is formed of a first piece and a second piece that are configured to cooperatively engage the syringe.

21. A syringe driver device, comprising:

a syringe;

a housing engaging a body of the syringe, wherein the housing includes a first longitudinal slot extending along the housing and positioned on a first side of the syringe, and wherein the housing includes a second longitudinal slot extending along the housing and positioned on a second side of the syringe, opposite the first side;

a bracket engaging a plunger of the syringe, wherein the bracket extends transversely through the first longitudinal slot and the second longitudinal slot; and

a spring attached to the bracket, the spring being biased to move the bracket and thereby withdraw the plunger from the body of the syringe at a constant force.

22. A device comprising:

a syringe having a proximal end and a distal end;

a plunger slidably received within a body of the syringe and having a first end and a second end, wherein the second end of the plunger extends beyond the distal end of the syringe body;

a housing engaging an outer surface of the syringe body, wherein the housing includes a longitudinal slot extending along an axis of the housing substantially parallel to an axis of the syringe, wherein the slot forms an opening through a side of the housing;

a bracket that extends along an axis transverse to the axis of the housing and the axis of the syringe, wherein the bracket engages the second end of the plunger beyond the distal end of the syringe body, wherein the bracket extends transversely through the longitudinal slot;

wherein the bracket is moveable between a first position in which the first end of the plunger is adjacent to a proximal end region of the syringe and a second position in which the first end of the plunger is adjacent to a distal end region of the syringe; and

a spring connected to the bracket and extending to a distal region of the housing, wherein the spring is configured to move the bracket from the first position to the second position at a constant force.

23. A device comprising:

a syringe;

a housing located at a proximal region of the device, wherein the housing receives a distal portion of the syringe and extends substantially parallel to a longitudinal axis of the syringe;

a first longitudinal slot extending along a first side of the housing;

a second longitudinal slot extending along a second side of the housing such that the syringe is positioned between the first longitudinal slot and the second longitudinal slot;

a bracket engaging a plunger of the syringe and slidably connected to the housing along an axis transverse to the longitudinal axis of the syringe, wherein the bracket includes a gripping portion that extends transversely through the first longitudinal slot and the second longitudinal slot and projects out from the first longitudinal slot and the second longitudinal slot;

a spring operably coupled to the bracket and extending from the bracket to a distal region of the device; and

a casing located at the distal region of the device, wherein the casing contains at least a portion of the spring,

wherein the bracket is slidable within the first longitudinal slot and the second longitudinal slot between a proximal region and a distal region of the housing, and the spring is configured to apply a substantially constant force on the bracket to slide the bracket from the proximal region to the distal region of the housing.