A closure instrument including a pre-positioning mechanism

By introducing support components and loop structures into the closure instrument, the problem of puncture position deviation is solved, enabling precise and safe puncture and surgical operations, and reducing surgical difficulty and tissue damage.

CN118203369BActive Publication Date: 2026-04-14NINGBO DIOCHANGE MEDICAL TECH CO LTD
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Patent Information

Application Number
CN202211628600.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-12-17
Publication Date
2026-04-14
Estimated Expiration
2042-12-17

AI Technical Summary

Technical Problem

In existing technologies, the foramen ovale closure instrument is prone to shifting in its intended position during puncture due to heartbeat, leading to puncture failure. Furthermore, the lack of support during puncture may result in tissue tearing, complicated procedures, and prolonged operation time.

Method used

The closure device includes a pre-positioning mechanism, comprising a support member and a loop structure. After reaching the pre-position, the support member abuts against the tissue to be closed, providing bidirectional support to ensure stable positioning of the puncture device within the heart. The loop structure also secures the device and prevents positional displacement.

Benefits of technology

This approach achieves precision and safety in puncture, reduces surgical difficulty and time, lowers the risk of tissue damage, and improves surgical outcomes.

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Abstract

The application relates to the field of medical devices, in particular to a closure device with a pre-positioning mechanism, which comprises a delivery catheter, an implant for closing a tissue defect, and a puncture mechanism and a positioning mechanism arranged in the delivery catheter, the positioning mechanism comprising a connecting mechanism, a support member arranged at the distal end of the connecting mechanism, and a pre-positioning mechanism arranged on the support member, the pre-positioning mechanism being located in the left atrium and hanging on the secondary septal tissue after the support member reaches a predetermined position, and the support member can provide a support force for the puncture mechanism when the puncture mechanism reciprocally punctures the tissue to be closed; in the application, the support member can provide bidirectional support for the puncture mechanism when the puncture mechanism reciprocally punctures the tissue, the puncture precision is improved, the tissue can be prevented from being damaged, the pre-positioning mechanism can prevent the positioning mechanism from deviating, and the application has good clinical significance.
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