Tissue Suturing Device With Inverted Puncture Needle
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Solution Overview
Problem
Existing tissue closure instruments require puncture needles to pass through tissues from the outside, risking injury to surrounding organs due to individual anatomical differences and requiring skilled surgeons to perform the puncture safely.
Innovation Solution
A tissue suturing device with a body comprising a guide segment and a tube segment, featuring a suture needle channel and an accommodating cavity, respectively, and equipped with suture needles having main and puncture needle segments. The device allows the puncture needle segments to return to the accommodating cavity after passing through the tissue, minimizing contact with surrounding organs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If puncture needles are used to pass through tissue from outside to inside, then suture operation can be performed, but the risk of injuring surrounding organs increases
Solution Approach 1:
The puncture needle is inverted to puncture from inside to outside instead of from outside to inside. The needle is inserted through the abdominal cavity wall from the interior, allowing the sharp tip to penetrate outward through the tissue. This reversal changes the direction of puncture so that the needle travels through tissue rather than having tissue travel over the needle, thereby eliminating contact with surrounding organs during the puncture process.
Solution Approach 2:
A guide needle channel is introduced as an intermediary structure that constrains and guides the puncture needle's movement. The guide needle channel is inserted into the abdominal cavity first, providing a predetermined safe pathway. The puncture needle then moves along this guided channel, ensuring it follows a controlled trajectory that avoids surrounding organs while maintaining the ability to perform suturing operations.
2Ease of operation
If surgeon holds tissue closure instrument in one hand and puncture needle in other hand, then puncture can be performed, but operation convenience decreases and tissue injury risk increases due to hand shaking
Solution Approach 1:
The puncture needle and tissue closure instrument are merged into a single integrated device. The puncture needle is connected to the tissue closure instrument body, forming one unified tool that performs both puncture and tissue closure functions. This eliminates the need for the surgeon to coordinate two separate instruments with two hands, reducing operational complexity and minimizing hand shaking effects.
Solution Approach 2:
The integrated device serves multiple functions: it can puncture tissue from inside to outside, guide the puncture needle through a predetermined safe path, and perform tissue closure operations. This multi-functional design allows a single instrument to replace what previously required coordinated use of multiple separate tools, improving both convenience and reliability.
Data Source
AI summary
A tissue suturing device includes a body and a plurality of suture needles. The body includes a guide segment and a tube segment. The guide segment contains a suture needle channel. The tube segment has an accommodating cavity communicated with the suture needle channel. Each of the suture needles includes a main needle segment and a puncture needle segment connected with and spaced apart from the main needle segment. Two of the suture needles, together, connect a suture thread releasably between the puncture needle segments of the two suture needles. The main needle segments are arranged in the suture needle channel. The puncture needle segments carry the suture thread and are located in the accommodating cavity. Each of the suture needles moves along the suture needle channel such that the puncture needle segment returns to the accommodating cavity alone after passing with the suture thread through a tissue wall.