Laparoscopic Purse String Suture Device Jaw Assembly
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Solution Overview
Problem
Existing surgical methods for applying purse string sutures during end-to-end circular anastomosis procedures often result in complications such as bleeding, tissue injury, and increased surgical time due to the need for external incisions and manual suturing, which can lead to anastomotic leaks and do not fully utilize the benefits of laparoscopic surgery.
Innovation Solution
A surgical device with an end effector featuring a jaw assembly, staple cartridges, and a suture that allows for the intra-peritoneal placement of purse string sutures without external incisions, using a tool assembly with jaws that move between open and closed positions to secure and staple the suture to tissue, minimizing tissue damage and leak risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual or extracorporeal purse string suture attachment is used, then the suture can be secured to tissue, but external incisions are required causing bleeding, tissue injury, and increased surgical time
Solution Approach 1:
A laparoscopic purse string suture device serves as an intermediary tool that enables suture attachment through minimally invasive means. The device includes a needle driver that delivers a curved needle through the abdominal wall and into the bowel, allowing suture placement without external incisions. This intermediary device bridges the gap between the external surgical field and the internal tissue, achieving reliable suture attachment while avoiding direct tissue exposure and associated complications.
2Reliability
If external incisions are made for purse string suture placement, then suture can be attached to tissue, but surgical time and recovery time increase
Solution Approach 1:
The invention replaces the traditional mechanical system of open incision and hand-sewn suture attachment with a laparoscopic mechanical delivery system. The needle driver mechanism automatically guides and deploys the curved needle and suture through a small access point, substituting the time-consuming manual external suturing process with a streamlined mechanical delivery system that reduces both surgical and recovery time.
3Ease of operation
If traditional open purse string method is used, then suture placement is straightforward, but laparoscopic benefits are not fully utilized
Solution Approach 1:
The needle driver is designed with dynamic characteristics that facilitate easy suture placement while maintaining laparoscopic efficiency. The driver mechanism allows for smooth needle deployment and suture release through controlled mechanical motion, enabling the surgeon to perform the procedure with minimal effort while fully utilizing the laparoscopic approach. The dynamic design accommodates the confined workspace of laparoscopic surgery while maintaining operational simplicity.
Data Source
AI summary
A surgical device, or a portion of a surgical device, that places purse string sutures in tissue within a body (e.g., intra-peritoneal space). The surgical device includes, or an end effector for a surgical device includes, a jaw assembly, staple cartridges, and a suture.