MULTIFUNCTIONAL SURGICAL ACCESS SYSTEM

• US 20150320441A1
• Filed: 07/08/2015
• Published: 11/12/2015
• Est. Priority Date: 08/31/2009
• Status: Active Grant

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Nguyen, Eric, Johnson, Gary M., Brustad, John R., Sakakine, Ghassan, Albrecht, Jeremey J., Becerra, Matthew M.
• Granted Patent: US 9,743,954 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• CPC Class Codes: A61B 17/3423 Access ports, e.g. toroid shape introducers for instruments or hands access sites for liquids A61M39/0247
• CPC Class Codes: A61B 17/3431 being collapsible, e.g. made of thin flexible material A61B17/3423 takes precedence
• CPC Class Codes: A61B 17/3462 with means for changing the diameter or the orientation of the entrance port of the cannula, e.g. for use with different-sized instruments, reduction ports, adapter seals expandable cannulas A61B17/3417
• CPC Class Codes: A61B 17/3494 with safety means for protection against accidental cutting or pricking, e.g. limiting insertion depth, pressure sensors for the peridural space A61B17/3401
• CPC Class Codes: A61B 17/3496 Protecting sleeves or inner probes; Retractable tips for protecting body piercing guide needles A61M25/0612
• CPC Class Codes: A61B 2017/00991 Telescopic means
• CPC Class Codes: A61B 2090/0801 Prevention of accidental cutting or pricking

Abstract

A tissue retractor comprising an outer ring, an inner ring, and a flexible, metal sheath extending therebetween is described. Embodiments of the outer ring comprise an outer ring rotatable around an annular axis thereof, thereby rolling the sheath therearound when retracting an incision or opening in a body wall. Embodiments of the sheath comprise a plurality of linked loops, a plurality of loops joined by a wire extending through adjacent loops, a braided wire, and a plurality of chains. Also described are kits comprising outer rings, inner rings, and sheaths, some or all of varying dimensions, which may be selected and assembled by the user for their intended use. Some or all of the kit components may be resterilized for reuse.

Claims

1. A tissue retractor comprising:

a longitudinal axis defining an instrument access channel extending from a proximal end to a distal end;

an outer ring;

an inner ring; and

a flexible sheath extending between the outer ring and the inner ring,

wherein

the instrument access channel extends through the outer ring, the inner ring, and the sheath, and

the sheath comprises a metal.

2. The tissue retractor of claim 1, wherein the metal comprises stainless steel.

3. The tissue retractor of claim 2, wherein the metal comprises titanium.

4. The tissue retractor of claim 1, wherein the metal comprises nitinol.

5. The tissue retractor of claim 1, wherein the metal sheath comprises a mesh comprising a plurality of linked loops.

6. The tissue retractor of claim 1, wherein the metal sheath comprises a plurality of loops, the loops joined by a wire extending through adjacent loops.

7. The tissue retractor of claim 1, wherein the metal sheath comprises a braided wire.

8. The tissue retractor of claim 1, wherein the metal sheath comprises a plurality of chains.

9. The tissue retractor of claim 1, further comprising a polymer film disposed around the metal sheath.

10. The tissue retractor of claim 1, wherein the metal sheath further comprises a plastic.

11. The tissue retractor of claim 1, wherein the metal sheath further comprises a ceramic.

12. The tissue retractor of claim 1, wherein the metal sheath further comprises a fiber reinforced composite.

13. A tissue retractor kit, comprising:

an outer ring having a plurality of fasteners disposed around a circumference of the outer ring;

an inner ring having a plurality of fasteners disposed around a circumference of the inner ring; and

a flexible, metal sheath having a distal end and a proximal end,

wherein

the user assembles the tissue retractor by securing the proximal end of the metal sheath to the plurality of fasteners disposed around the outer ring and the distal end of the metal sheath to the plurality of fasteners around the inner ring.

14. The tissue retractor kit of claim 13, wherein the sheath is autoclavable.

15. The tissue retractor kit of claim 13, wherein the fasteners comprise at least one of hooks, clips, clamps, pins, wires, hook-and-loop fasteners, laces and eyelets.

16. The tissue retractor kit of claim 13, wherein the metal sheath comprises a mesh comprising a plurality of linked loops.

17. The tissue retractor kit of claim 13, wherein the metal sheath comprises a plurality of loops, the loops joined by a wire extending through adjacent loops.

18. The tissue retractor kit of claim 13, wherein the metal sheath comprises a braided wire.

19. The tissue retractor kit of claim 13, wherein the metal sheath comprises a plurality of chains.

20. A tissue retractor kit, comprising:

at least one outer ring having a plurality of fasteners disposed around a circumference of the outer ring;

at least one inner ring having a plurality of fasteners disposed around a circumference of the inner ring; and

at least one flexible, metal sheath having a distal end and a proximal end,

wherein

the user selects the inner ring, outer ring, and sheath suitable for his or her intended use and assembles the tissue retractor by securing the proximal end of the selected metal sheath to the plurality of fasteners disposed around the selected outer ring and the distal end of the selected metal sheath to the plurality of fasteners around the selected inner ring, and

the retractor is disassemblable after use, and one or more of the outer ring, the inner ring, and the sheath is reusable.