Surgical access system

• US 9,295,459 B2
• Filed: 12/18/2014
• Issued: 03/29/2016
• Est. Priority Date: 02/25/2003
• Status: Expired due to Fees

• Current Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Original Assignee: Applied Medical Resources Corporation (Applied Medical Corporation)
• Inventors: Pingleton, Edward D., Hart, Charles C.
• Primary Examiner(s): Ramana, Anu
• Application Number:
  US14/574,987
• Publication Number:
  US 20150173736A1
• Time in Patent Office: 467 Days
• US Class Current: 1/1
• 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 17/3498 Valves therefor, e.g. flapper valves, slide valves haemostasis valves A61M39/06; check valves A61M39/24
• CPC Class Codes: A61B 2017/00265 Hand assisted surgery, i.e. minimally invasive surgery with at least part of an assisting hand inside the body

Abstract

The invention is directed to a surgical access system that provides access to a surgical area while maintaining pneumoperitoneum during laparoscopic surgery. The access system comprises a sheath retractor adapted to dilate a wound stretchable to a desired diameter and a detachable seal adapted to be removable from the sheath retractor. In another aspect, the detachable seal comprising a valve including a plurality of overlapping sheets defining an access channel that extends into communication with the incision in the patient. Each of the overlapping sheets includes a portion of the perimeter that is not fixed to the inner diameter of the ring, which provide open edges defining the access channel.

Claims

1. A surgical access device comprising:

a valve structure comprising;

a plurality of septum layers; and

a ring having an inner diameter for affixing the plurality of septum layers along their perimeter;

wherein the plurality of septum layers includes a first septum layer having a hole at a center of the first septum layer;

wherein the plurality of septum layers comprises a second septum layer comprising a central patch supported by a plurality of spokes extending from the central patch, the central patch being large enough to cover the hole of the first septum layer;

wherein the valve structure in a first state forming a zero seal in the absence of the instrument or the arm of the surgeon extending through the valve structure, the valve structure in a second state forming an instrument seal in the presence of the instrument or the arm of the surgeon extending through the valve structure and into a patient.

2. The surgical access device of claim 1 wherein the plurality of septum layers includes a third septum layer having an open edge and a fourth septum layer having an open edge.

3. The surgical access device of claim 2 wherein the open edges of the third septum layer and the fourth septum layer slightly overlap at a center of the ring.

4. The surgical access device of claim 2 wherein the open edges of the third septum layer and the fourth septum layer have a concave configuration.

5. The surgical access device of claim 4 wherein the ring is rigid.

6. The surgical access device of claim 4 wherein the second septum layer and the third septum layer are disposed between the first septum layer and the fourth septum layer.

7. The surgical access device of claim 4 wherein the plurality of septum layers are made of elastomeric material.