Concealed-Needle Tissue Closure for Accurate Suture Loading
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Solution Overview
Problem
Existing tissue closure devices face issues such as inaccurate needle placement, suture separation, difficulty in loading sutures, exposure of needle tips posing puncture risks, and hygiene hazards due to the narrow structure for suture loading.
Innovation Solution
A tissue closure device with a preloaded access needle integrated into the main body housing, featuring a unique arrangement of the access needle and suture slot that allows for easy suture loading and release, ensuring accurate needle control and protection of the operator from needle exposure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the access needle is operated outside the tissue closure device, then the suture can be loaded into the tissue, but the access needle may interfere with the tissue closure device leading to inaccurate final arrival position and suture separation
Solution Approach 1:
The access needle is integrated into the tissue closure device, forming a unified structure where the needle is received and guided by the device body. This merging eliminates interference between separate components while maintaining the ability to accurately deliver the suture to the target tissue.
Solution Approach 2:
The tissue closure device acts as an intermediary between the operator and the access needle, providing a controlled environment for needle insertion and suture delivery. The device structure guides the needle along a predetermined path, ensuring accurate placement while the operator manipulates the device from outside the tissue.
2Ease of operation
If the suture is loaded manually with the access needle exposed, then the suture can be loaded into the needle, but the operator is at risk of puncture and contamination
Solution Approach 1:
The access needle is nested within the tissue closure device housing, with the needle tip concealed inside the device body during the suture loading process. This nesting arrangement allows the operator to load the suture into the needle through a controlled opening while the rest of the needle remains protected and concealed, eliminating puncture risk and contamination hazards.
3Volume of moving object
If the feature position for loading suture is narrow in structure, then the device can be compact, but the operation of loading the suture becomes difficult
Solution Approach 1:
The suture loading feature is segmented into multiple components including a receiving opening, an internal channel, and a delivery mechanism. This segmentation allows the device to maintain a compact overall form while providing sufficient space and access points for easy suture loading. The suture can be introduced through the opening and guided through the segmented pathways to the needle.
Data Source
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AI summary
Provided in the present invention are a tissue closure device and a method of using the same. The tissue closure device includes a main body housing and an access needle. A suture slot and a needle exit hole are provided on a sidewall of the main body housing; and the access needle can be preloaded in a chamber, and is provided with a suture carrying portion close to a tip thereof. When the access needle is in an initial position, the access needle is accommodated in the chamber, and the suture carrying portion and the suture slot are at least partially communicated such that a suture can enter the suture carrying portion via the suture slot. The unique arrangement of the access needle and the suture slot of the main body housing of the present invention enables an operator to conveniently load a suture into the access needle and release the suture from the main body housing, and also facilitates exit of the access needle carrying the suture from the tissue closure device. The entire operating process is fast and the control over the access needle is accurate, thus achieving a better operation effect. In a suture loading process, the tip of the access needle is concealed in the main body housing, so that an operator can be protected from a puncture wound, and the tip of the access needle is less likely to be contaminated.