Pressing device for preloading an interventional instrument, interventional instrument delivery assembly and packaging assembly

By pre-installing the delivery system with interventional instruments and utilizing the control of catheter components and pull wires, the problem of rapid ejection during artificial heart valve implantation is solved, precise delivery and convenient loading are achieved, and the risk of surgical trauma and loading complexity are reduced.

CN118873300BActive Publication Date: 2025-10-17VENUS MEDTECH (HANGZHOU) INC
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Patent Information

Application Number
CN202410983376.2
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2021-12-03
Filing Date
2022-06-24
Publication Date
2025-10-17
Estimated Expiration
2042-06-24

AI Technical Summary

Technical Problem

In the existing technology, artificial heart valves are prone to popping out quickly during implantation and are difficult to control accurately. In addition, the dry film storage method requires doctors to load it on site, which increases the complexity of the operation and the learning cost.

Method used

A pre-installed delivery system for interventional instruments was designed, including a catheter assembly, a crimping device, an interventional instrument, and a pull wire. The expansion and compression states of the interventional instrument are controlled by the locking and unlocking states of the pull wire. Combined with the inner and outer sheaths and the inner core, precise delivery and convenient loading of the interventional instrument are achieved.

Benefits of technology

It achieves precise delivery of artificial heart valves, reduces the risk of surgical trauma, simplifies the loading process of interventional instruments, and improves surgical efficiency.

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Abstract

The application discloses a compression device for preloading an interventional instrument, an interventional instrument conveying assembly and a packaging assembly. The interventional instrument conveying assembly has opposite distal and proximal ends and is used for locking or releasing a pull wire of an interventional instrument in a line control mode. The interventional instrument conveying assembly comprises a lock seat provided with a lock hole; lock pieces arranged on the distal side of the lock seat, the lock pieces are in the shape of rods and are multiple, each lock piece is connected to a mounting seat, each lock piece is further extended to the proximal side by the mounting seat, the lock pieces have a locking position combined with the lock hole and an unlocking position separated from the lock hole, the pull wire is sleeved on the lock piece after winding around the interventional instrument; a push piece is slidably sleeved on the lock piece; and a compression spring acts between the push piece and the mounting seat. The lock piece extends from the distal side to the proximal side to realize cooperation with the lock hole, so that the compactness of the structure can be better realized. Interference between the lock piece and the pull wire tube and the pull wire is effectively reduced, the overall volume of the conveying system is controlled, and a series of operations in the interventional treatment process are facilitated.
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