Suture Retrieval Needle with Deployable Gripping Element
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Solution Overview
Problem
Conventional medical suturing tools face difficulties in handling and stability issues when removing puncture needles from a patient while maintaining grip on the suturing thread, affecting the security and ease of the suturing process.
Innovation Solution
A medical suturing tool with a linear gripping member and a retracting operating member, where the gripping part can retract into the retrieval puncture needle, preventing the release of the suturing thread, allowing for easy removal of needles without manual handling and enhancing stability by using an elastic member or engagement mechanism for advancement prevention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the two puncture needles are pulled out from the patient while maintaining grip on the suturing thread, then the suturing thread can be secured, but the handling becomes difficult and the stability of suturing is adversely affected
Solution Approach 1:
The device separates the gripping function from the puncture needle by introducing a linear gripping member that can independently engage and hold the suturing thread. This segmentation allows the puncture needles to be removed without compromising the grip on the thread, resolving the contradiction between maintaining reliability and ease of operation.
Solution Approach 2:
The linear gripping member acts as an intermediary between the puncture needle and the suturing thread. It receives the thread from the puncture needle and maintains the grip independently, allowing the needle to be removed while the thread remains securely held. This intermediary mechanism eliminates the handling difficulty while preserving suturing stability.
2Reliability
If the gripping part is made to protrude from the retrieval puncture needle, then the suturing thread can be effectively gripped, but the risk of accidental release increases during needle removal
Solution Approach 1:
The linear gripping member is nested within the retrieval puncture needle, with the gripping part positioned to protrude only when needed. During insertion and threading, the gripping member is contained within the needle, minimizing accidental release risk. When the thread needs to be gripped, the gripping part protrudes from the needle tip, maintaining secure engagement while reducing harmful exposure.
Solution Approach 2:
The gripping part of the linear gripping member is designed to dynamically adjust its position relative to the puncture needle. It can protrude from the needle tip when thread engagement is required and retract when not needed, allowing the system to adapt between states of high grip security and low accidental release risk.
3Ease of operation
If manual handling of the suturing thread is required during needle removal, then precise control can be achieved, but the complexity of the operation increases and time is consumed
Solution Approach 1:
The linear gripping member is designed to automatically engage and hold the suturing thread as it passes through the puncture needle, without requiring manual manipulation. The gripping part self-adjusts to capture the thread, and the entire needle removal process occurs without manual handling, reducing operational complexity and time consumption while maintaining precise control through the mechanical gripping mechanism.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tool enables secure and stable suturing by gripping the suturing thread effectively, allowing for easy removal of needles without manual handling, thereby improving the handling stability and efficiency of the suturing process.
Implementation Method 1
provision is made for advancement prevention means for preventing the advance of the retracting operating member with respect to the retrieval puncture needle when the retracting operating member is made to retreat
Data Source
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AI summary
The present invention provides a suture retrieval puncture needle (14) for a medical suturing tool (10), the suture retrieval puncture needle comprising an outer hollow needle member and an inner suture gripping element (15b) movable within said outer hollow needle member, said inner suture gripping element being deployable at least partially externally to said outer hollow needle member for retrieval of a suture, wherein an operating member (19a) is provided at a proximal end of said suture retrieval puncture needle, said operating member being connected to said inner suture gripping element, and wherein movement of said operating member relative to said outer hollow needle member causes said inner suture gripping element to move between a deployed position and a retracted position, said suture retrieval puncture needle further comprising a locking arrangement (24,18) for releasably holding said operating member in a position relative to said outer hollow needle member in which said inner suture gripping element is in said deployed position.