Surgical retractor

• US 5,159,921 A
• Filed: 11/27/1990
• Issued: 11/03/1992
• Est. Priority Date: 11/27/1990
• Status: Expired due to Fees

• Current Assignee: Rocklin L. Hoover
• Original Assignee: Rocklin L. Hoover
• Inventors: Hoover, Rocklin L.
• Primary Examiner(s): Weiss, John G.
• Assistant Examiner(s): Lucchesi, Nicholas D.
• Application Number:
  US07/618,393
• Time in Patent Office: 707 Days
• Field of Search: 128/20, 128/87 R, 128/89 R, 606/192, 606/193, 606/196
• US Class Current: 600/207
• CPC Class Codes: A61B 17/0293 with ring member to support retractor elements
• CPC Class Codes: A61B 2017/306 holding by means of suction
• CPC Class Codes: A61B 2090/306 using optical fibres
• CPC Class Codes: A61B 2217/005 with suction drainage system
• CPC Class Codes: A61B 2218/008 for smoke evacuation

Abstract

A surgical retractor for holding an incision in an open configuration comprising a compartment that has a flexible condition for placing the compartment into engagement with the tissue of the incision and a rigid condition for holding the tissue apart. The compartment contains elastically compressible beads and a fluid such as air and changes to the rigid condition by evacuating the air through the valve so that the wall of the compartment collapses to pack the beads together in a monolith of the desired shape. The compartment, which may be in the shape of an oval or an elongated tube, has a thickened portion oriented interior to the incision for preventing punctures, which carries optionally a light source such as a fiber optic bundle for illuminating the surgical area and also a suction source for evacuation of fluids, vapors, odors or smoke from the operative site.

Claims

1. A device for use in holding open a surgical incision, said device comprising:

a compartment having a wall defining an interior surface and an exterior surface, a tissue engaging side of said exterior surface and a tissue opposing side of said exterior surface, said compartment being generally conformable to the shape of said incision,

said wall on said tissue opposing side carrying means for resisting punctures;

means for illuminating said incision, said illuminating means carried by said compartment;

a matrix of elastically deformable elements within said compartment;

means for communicating with said interior surface of said compartment so that any fluid in said compartment can be withdrawn and said compartment sealed, said compartment holding said surgical incision open when said fluid is withdrawn and said communicating means sealed.

2. The device as recited in claim 1, wherein said resisting means further comprises a thicker wall.

3. The device as recited in claim 1, wherein said resisting means is a TEFLON coating.

4. The device as recited in claim 1, further comprising means for drawing vapors proximate to said device.

5. The device as recited in claim 1, wherein said device is generally oval and said tissue engaging side is exterior to said oval and said opposing side is interior to said oval.

6. A method of engaging and maintaining tissue of a surgical incision in an open configuration for surgery, comprising:

deploying a compartment about a substantial portion of said incision, said compartment containing a matrix of elastically deformable elements and a fluid;

evacuating at least a portion of said fluid from said compartment so that said elements pack together to cause said compartment to become rigid; and

sealing said compartment.

7. The method as recited in claim 6, wherein said elastically deformable elements are beads.

8. The method as recited in claim 7, wherein said compartment has a wall with a thickened portion and said deployment step further comprises:

placing said compartment against said incision so that said thickened portion is inward of said incision.

9. The method as recited in claim 8, wherein said thickened portion has means for illuminating the interior of said incision and said method further comprises the step of activating said illuminating means.

10. The method as recited in claim 8, wherein said thickened portion has means for suctioning the interior of said incision and said method further comprises the step of activating said suctioning means.

11. The method as recited in claim 7, wherein said compartment has a wall with a thickened portion and said deployment step further comprises:

placing said compartment against said incision so that said thickened portion is inward of said incision and does not engage said tissue.

12. The method as recited in claim 6, wherein said elastically deformable elements are beads and said compartment has means for minimizing punctures of said compartment.

13. The method as recited in claim 6, wherein said compartment has a wall with a thickened portion and said deployment step further comprises:

placing said compartment against said incision so that said thickened portion is inward of said incision and does not engage said tissue.