Trans-abdominal Gastric Cannula Anchoring
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Solution Overview
Problem
Current minimally invasive surgical techniques, such as endoscopy and laparoscopy, face limitations in providing simultaneous intraluminal and extraluminal access to the gastric environment, with risks of infection and complications due to the need for multiple incisions and unstable trocar placement.
Innovation Solution
A trans-abdominal gastric surgical system featuring a uniquely designed cannula with internal and external anchors for secure positioning through the abdominal wall, allowing retrograde introduction and secure anchoring within the gastric or peritoneal surfaces, enabling reliable and versatile access for medical instruments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a trocar is inserted through the abdominal wall to access the gastric lumen, then extraluminal access is achieved, but the peritoneal membrane must be actively punctured increasing risk of infection or other complications
Solution Approach 1:
The cannula is inserted in reverse direction through the abdominal wall, with the sharp distal tip facing toward the abdominal wall rather than pointing outward. This inversion allows the sharp tip to engage and pierce the peritoneal membrane from the intraluminal side, pushing the blunt proximal end outward through the abdominal wall, thereby reducing infection risk while maintaining access reliability
2Reliability
If a trocar is inserted through the abdominal wall, then instrument access to the intraperitoneal space is achieved, but it can be difficult to reliably secure the trocar or other cannula-type element for extended periods of time
Solution Approach 1:
The cannula incorporates a sharp distal tip that is pre-configured to engage and pierce the peritoneal membrane during insertion. This preliminary action of the sharp tip creates a secure anchoring point in the peritoneal membrane, ensuring reliable retention for extended periods without requiring additional fixation mechanisms
3Reliability
If standard laparoscopic technique is used to place a trocar into the gastric lumen, then access is achieved, but multiple abdominal incisions are required and the procedure is complex with attendant risk
Solution Approach 1:
The cannula design combines the sharp distal tip for peritoneal membrane engagement with the blunt proximal end for safe external protrusion in a single integrated device. This merging of functions allows simultaneous achievement of intraluminal and extraluminal access through a single insertion site, eliminating the need for multiple incisions and complex fixation procedures while maintaining reliable gastric access
Data Source
AI summary
Provided herein are trans-abdominal gastric systems and related methods that are useful in a range of applications for accessing internal regions of a patient. A cannula has internal and external anchors to reliably secure the anchor to an abdominal wall of the patient. An introducer with a capture element facilitates system placement by retrograde introduction. Upon completion, the system is removed and the gastric and abdominal wall incision and defect closed by sutures specially connected to the system that ensures reliable system removal and suture closure in a configuration that is outside the abdominal wall. The systems and methods are particularly suited for use with conventional laparoscopic or endoscopic medical instruments.