Suturing Device Needle Recess Suture Retention
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Solution Overview
Problem
Existing suturing devices require pre-fabricated needles that are expensive and prone to manufacturing defects, making the suturing process less cost-effective and dependent on manufacturing quality, and they often struggle with loading and retaining sutures.
Innovation Solution
A suturing device with a needle receiving portion that includes a recess to hold a suture, combined with a needle deployment mechanism that allows the needle to enter and exit the recess, enabling the use of normal sutures and reducing the need for pre-loaded needles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-fabricated customized needles with sutures are used in existing suturing devices, then the suturing function can be performed, but the cost increases and manufacturing defects may occur
Solution Approach 1:
The device separates the needle and suture into independent components. The suture is loaded into the elongate member first, then the needle is separately inserted through the elongate member to engage the suture. This segmentation eliminates the need for pre-fabricated needle-suture combinations, reducing manufacturing complexity and cost while maintaining reliability.
Solution Approach 2:
The suture is preliminarily positioned within the elongate member before the needle is inserted. The needle receiving portion with recess pre-holds the suture in place, so when the needle is subsequently inserted, the suture is already in the correct position for engagement, streamlining the loading process.
2Reliability
If pre-loaded needles are used, then suturing can be performed, but the loading process becomes difficult and time-consuming
Solution Approach 1:
The loading process is segmented into two simple sequential steps: first inserting the suture into the elongate member, then inserting the needle through the elongate member to engage the suture. This segmentation makes the loading process easier and faster compared to loading pre-fabricated needles.
Solution Approach 2:
Instead of pre-loading the suture onto the needle (conventional approach), the invention inverts the sequence by first placing the suture into the elongate member, then inserting the needle to engage it. This reversal simplifies the loading process and reduces time consumption.
3Reliability
If pre-fabricated needles with sutures are used, then suturing function is available, but the devices become dependent on manufacturing quality
Solution Approach 1:
By separating the needle and suture into independent components that are loaded separately, the invention eliminates the need for precise pre-fabrication of needle-suture assemblies. Each component can be manufactured independently with standard precision, reducing dependence on high manufacturing quality while maintaining reliable suturing function.
Solution Approach 2:
The device allows the surgeon to load the suture and needle in the operating room using simple manual insertion steps. This self-service loading capability reduces dependence on factory pre-assembly quality, as the final configuration is created at the point of use rather than during manufacturing.
Data Source
AI summary
In some embodiments, the present invention discloses a suturing device including an elongate member having a head portion, a tail portion and a needle receiving portion provided on the head portion. The needle receiving portion has a recess that is configured to receive a suture and hold it within the recess. The needle receiving portion is fixed with respect to an opening defined at the head portion. The suturing device further includes a needle having a retracted state and a deployed state. The needle includes a needle notch at a distal portion of the needle. The needle is configured to enter the recess of the needle receiving portion and receive the suture within the needle notch.