Textured Surgical Forceps Jaws for Blunt Tissue Dissection
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Solution Overview
Problem
Surgical procedures often require high force and sharp devices for blunt dissection of moist and low-friction tissue, which can lead to tissue trauma and inefficiency.
Innovation Solution
The development of surgical forceps with textured surfaces and selectively extendable dissecting tips, including a series of peaks and troughs, rounded saw tooth, square wave, or sine wave profiles, and a curved flange with a sharpened edge, to facilitate tissue dissection with reduced force and improved repeatability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sharp devices and high tension are used for blunt dissection of moist and low friction tissue, then tissue separation effectiveness is improved, but tissue trauma increases
Solution Approach 1:
The jaw member surface is segmented into multiple peaks and troughs, creating a textured pattern that mechanically interlocks with tissue fibers. This segmentation allows progressive tissue separation through mechanical engagement of individual peaks with tissue strands, reducing the need for high-tension sharp cutting while minimizing trauma.
Solution Approach 2:
The distal end of the jaw member is given a specialized textured surface quality with peaks and troughs, while the rest of the jaw remains smooth. This localized texturing provides the necessary mechanical interlocking capability precisely where tissue contact occurs, enabling effective dissection with reduced force and minimal tissue damage.
2Productivity
If sharp devices are used for blunt dissection, then tissue separation effectiveness is improved, but device appropriateness for blunt dissection decreases
Solution Approach 1:
The jaw member incorporates a textured surface with multiple peaks and troughs that provides blunt dissection capability through mechanical interlocking. This segmented texture allows the device to effectively separate tissue through gradual mechanical engagement rather than sharp cutting, making it appropriately designed for blunt dissection while maintaining high productivity.
Solution Approach 2:
Instead of using a sharp edge to cut tissue, the invention inverts the approach by using a textured surface with peaks and troughs that mechanically engages and separates tissue through blunt force. This inversion of the traditional sharp-edge approach enables effective tissue separation while maintaining appropriateness for blunt dissection techniques.
3Productivity
If high tension is applied for tissue dissection, then dissection effectiveness is improved, but force required increases
Solution Approach 1:
The textured surface is divided into multiple peaks and troughs that progressively engage with tissue fibers. This segmentation distributes the separation force across multiple contact points, allowing effective dissection to be achieved through cumulative mechanical engagement rather than requiring high tension forces.
Solution Approach 2:
The peaks and troughs of the textured surface are designed with curved geometries that allow gradual engagement with tissue. The curved profiles enable progressive mechanical interlocking and tissue separation through rounded contact points, reducing the peak forces required compared to sharp angular edges.
Data Source
AI summary
A forceps for use in surgery for dissecting tissue includes a pair of jaw members movable from an open position in spaced relation relative to one another to a closed position. The jaw members each have an outer housing extending along the length thereof to a distal end of the jaw members. The outer housing of one of the jaw members includes a textured surface at a distal end configured to interface with and dissect tissue during the movement of the jaw members from the closed to open positions. A dissecting tip may be selectively extendable from a channel defined in one of the jaw members to engage and separate tissue when in the extended position.