Multi-functional surgical access system

• US 9,717,522 B2
• Filed: 08/31/2010
• Issued: 08/01/2017
• 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: Sakakine, Ghassan, Nguyen, Eric, Becerra, Matthew M., Johnson, Gary M., Brustad, John R., Albrecht, Jeremy J.
• Primary Examiner(s): MERENE, JAN CHRISTOP L
• Application Number:
  US12/873,115
• Publication Number:
  US 20110054260A1
• Time in Patent Office: 2,527 Days
• Field of Search: 600201-234
• 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 surgical access system comprises a wound retractor comprising an outer anchor, an inner anchor, and a flexible, tubular sheath extending therebetween. Embodiments of the outer anchor 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. The sheath comprises a plurality of fibers or strands that improve the abrasion and puncture resistance thereof. Consequently, the surgical access system is useful in procedures in which damage to the sheath is likely, for example, orthopedic hip replacement, and spinal procedures. In some embodiments, the sheath tapers from the outer ring to the inner ring.

Claims

1. A tissue retractor adapted for use in orthopedic procedures, the 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, the inner ring having a smaller diameter than the outer ring; and

a flexible, generally frustoconical sheath extending between the outer ring and the inner ring, tapering from a proximal end, coupled to the outer ring, to a distal end, coupled to the inner ring;

wherein

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

at least a portion of the sheath has anisotropic stretch characteristics,

wherein the outer ring comprises an annular axis around which the outer ring is rotatable, and

wherein the outer ring comprises a cross section comprising a longer major axis and a shorter minor axis,

the major axis is substantially parallel to the longitudinal axis, and

the outer ring comprises a circumferential lumen and a hoop disposed in the lumen.