Self-Locking Suture Delivery Device for Minimally Invasive Surgery
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Solution Overview
Problem
Existing suturing devices for laparoscopic and endoscopic surgery require time-consuming and difficult manipulation, leading to prolonged incision times and increased risk of infection due to the need for intricate knot-tying with small instruments, which demands significant expertise.
Innovation Solution
A mechanical self-locking suture and delivery device that automatically closes upon deployment, featuring a flexible body with a hook and loop mechanism, allowing for rapid suture delivery and secure fastening without the need for complex knot-tying, using a delivery mechanism with push rods and needles to insert and secure the suture ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If traditional suturing devices are used to deliver and tie sutures within the body, then the suture can be fastened, but the procedure becomes time-consuming and difficult due to the need for intricate knot-tying manipulation with forceps
Solution Approach 1:
The suture device performs its own fastening operation automatically. The delivery device pushes the suture through tissue and the suture self-fastens upon deployment without requiring external manipulation with forceps or other instruments. This self-service mechanism eliminates the time-consuming knot-tying step while maintaining secure fastening.
Solution Approach 2:
The invention extracts the complex knot-tying manipulation step from the suturing process. By designing the suture to self-fasten upon deployment, the patent removes the need for intricate manual manipulation with forceps, leaving only the essential delivery action performed by the device.
2Reliability
If traditional suturing methods requiring knot-tying are used, then the suture can be secured, but the incision must be kept open for a prolonged amount of time increasing infection risk
Solution Approach 1:
The suture device automatically completes the fastening action upon deployment into the tissue. The self-fastening mechanism activates immediately when the suture is pushed through the tissue by the delivery device, eliminating the need to keep the incision open for prolonged manipulation. This rapid self-securing minimizes exposure time and reduces infection risk while maintaining secure fastening.
Solution Approach 2:
The suture is pre-configured with the fastening structure (hook and loop) that automatically engages upon deployment. The fastening action is built into the suture design itself, so that as soon as the suture is delivered through the tissue, the fastening occurs automatically without requiring the incision to remain open for additional manual steps.
3Ease of manufacture
If existing suturing devices are used, then the suture can be delivered, but significant expertise is required to manipulate small instruments for knot-tying
Solution Approach 1:
The suture device performs the fastening function automatically upon delivery. The practitioner simply needs to push the suture through the tissue using the delivery device, and the suture self-fastens without requiring the practitioner to manipulate small instruments or perform complex knot-tying maneuvers. This dramatically reduces the expertise requirement while maintaining secure fastening.
Solution Approach 2:
The invention extracts the complex knot-tying skill requirement from the surgical procedure. By designing the suture to self-fasten, the patent removes the need for surgeons to master intricate manipulation techniques with forceps, leaving only the straightforward delivery action that can be performed with minimal training.
Data Source
AI summary
The invention generally relates to devices and methods for suturing tissue. The invention provides methods and devices for suturing by pushing two ends of a suture through tissue from a proximal side of the tissue and fastening the two ends together on a distal side of the tissue through one operation of a trigger.