Integrated Access Needle Control for Accurate Tissue Closure
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Solution Overview
Problem
Existing tissue closure devices face issues with inaccurate control of the access needle, leading to problems such as incorrect final arrival position, detachment of sutures, and failure to deliver sutures to predetermined positions due to the separate operation of the access needle outside the device.
Innovation Solution
A tissue closure device with an integrated access needle and needle control component that allows for precise control over the retention and actuation of the needle, ensuring accurate delivery of sutures to a target position by controlling the needle's orientation and depth during the actuation process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the access needle is operated outside the tissue closure device, then the device structure is simpler, but the control accuracy of the access needle deteriorates
Solution Approach 1:
The access needle is integrated into the tissue closure device body, forming a unified structure where the needle is pre-loaded within the device. This merging eliminates the need for separate external needle operation while maintaining structural simplicity, as the integrated design reduces the number of independent components and improves coordination between the needle and device body.
2Device complexity
If the access needle is operated outside the tissue closure device, then the device structure is simpler, but the reliability of suture delivery deteriorates
Solution Approach 1:
By integrating the access needle into the device body, the patent ensures that the needle and device move as a unified system, eliminating coordination issues between separate components. This integration guarantees that the needle reaches the predetermined position accurately and reliably delivers the suture, as the integrated design ensures consistent positioning and control throughout the entire delivery process.
3Measurement precision
If the access needle is integrated into the tissue closure device, then the control accuracy of the access needle improves, but the device complexity increases
Solution Approach 1:
The access needle is pre-loaded into the tissue closure device body during manufacturing, with the needle positioned and oriented in advance. This preliminary action eliminates the need for complex real-time adjustment mechanisms, as the needle is already in the correct position and orientation when the device is activated, thereby achieving high control accuracy without significantly increasing device complexity.
4Reliability
If the access needle is integrated into the tissue closure device, then the reliability of suture delivery improves, but the ease of operation deteriorates
Solution Approach 1:
The access needle is pre-loaded and pre-positioned within the device body, so that when the device is activated, the needle is already in the correct orientation and position to deliver the suture. This preliminary preparation simplifies the operation for the user, as they only need to activate the device rather than manually position and orient the needle, thereby maintaining high reliability while improving ease of operation.
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, an access needle, and a needle control component. The needle control component is mounted to the main body housing and fixedly connected to the access needle, and the needle control component can hold the access needle in an initial position in a predetermined orientation and can drive the access needle to move from the initial position to an actuated position at a predetermined depth. The needle control component in the present invention can achieve accurate control over the retention and actuation processes of the access needle as such an integrated unit, such that an operator can conveniently load a suture when the access needle is held in the initial position; and the access needle has better depth and rotation accuracy during actuation, so as to accurately carry the suture to a predetermined position.