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Biodegradable tissue retractor

a tissue retractor, biodegradable technology, applied in the field of surgical devices, can solve the problems of significant tissue tearing risk, achieve the effect of reducing potential tissue trauma, and reducing the risk of tissue tearing

Inactive Publication Date: 2005-10-20
FOCAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a new technique for retracting tissue using a tissue-affixing article that adheres to the tissue and a method for applying force to the tissue through the article. This technique can be used in minimally-invasive surgeries and can help reduce potential tissue trauma. The invention also includes various devices and kits for use in surgical procedures. Overall, the invention provides a safer and more effective way to retract tissue during surgery."

Problems solved by technology

Retraction or manipulation may also be accomplished by implanting a suture into the tissue, but there is a significant risk of tissue tearing even with strong, muscular tissue.

Method used

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example

[0062] The nature of the invention is clearly demonstrated by an operational example. The technique was used to manipulate the beating heart of a live dog. A primer solution buffered to physiological pH and containing 50 ppm Eosin Y, 0.10 M neutral triethanolamine (TEA) buffer, and 10% of a polymerizable macromer (which contained a polyethylene glycol backbone (3500 MW) with about 5 lactate residues attached, and endcapped with acrylic acid esters) was brushed onto a tissue-affixing article, specifically a 2 cm by 4 cm area of a 2 cm×6 cm polyester (Mersilene™) mesh patch, and also onto the epicardial surface of the LV apex of a beating dog heart that was exposed via thoracotomy. A layer of sealant prepolymer (20% 35,000 MW PEG with trimethylene carbonate linkages and acrylate end caps) also containing Eosin Y and TEA buffer were applied over the primer on the heart. The mesh was placed onto the coated tissue, and a layer of sealant was brushed onto the mesh / tissue surface. Two 20-s...

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Abstract

This invention describes novel methods and devices for stabilizing and retracting tissue during surgery, in particular internal tissue. Patches of material, preferably biodegradable, are adhered to tissue surfaces. By manipulation of the patches, for example directly with forceps, or via sutures attached to the patches, tissues can be retracted or otherwise manipulated with minimal trauma to the tissues. The method is especially useful in minimally-invasive surgery.

Description

RELATED APPLICATION [0001] This application is a divisional application of U.S. patent application Ser. No. 10 / 114,922, filed Apr. 3, 2002, which is a continuation application of U.S. patent application Ser. No. 09 / 634,366, filed Aug. 9, 2000, which is a continuation application of U.S. patent application Ser. No. 09 / 045,401, filed Mar. 20, 1998, which claims the benefit under Title 35, U.S.C. §119(e) of U.S. provisional application Ser. No. 60 / 042,054, filed Mar. 20, 1997, incorporated herein by reference.FIELD OF THE INVENTION [0002] The invention relates generally to surgical devices, and more particularly to materials and methods for retraction and stabilization of tissues, using biodegradable patches adhered to tissue in a releasable manner. BACKGROUND OF THE INVENTION [0003] During surgery, it is often necessary to retract tissue, especially internal tissue, to operate upon it or upon adjacent tissue. This is conventionally accomplished using forceps, or other mechanical gripp...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B17/00A61B17/02A61B17/03A61B17/04A61B17/06A61B17/08A61M31/00
CPCA61B17/00491A61B17/0218A61B17/06A61B17/085A61B2017/081A61B2017/00495A61B2017/00951A61B2017/0237A61B2017/00004
Inventor POFF, BRADLEY C.HERMAN, STEPHEN J.PICHON, DEAN M.SAWHNEY, AMARPREET S.
Owner FOCAL
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