Quick release implant pusher and implant delivery system

Abstract

The invention discloses a fast-release implant pushing device and an implant delivery system. The implant delivery system includes an implant pushing device, an expansion device, a loading device, a hemostatic device and an outer sheath. The implant pushing device includes a pushing component and a handle component. The push assembly includes a push cable, an inner core worn in the push cable, and a clamping piece arranged at the far end of the inner core; the clamping piece includes at least two clamping arms, and at least one clamping arm distal end is provided with a hook The planes where at least two hooks are located do not overlap; the handle assembly includes a handle and an axial drive control mechanism for driving the axial relative movement between the push cable and the inner core, and the handle is provided with a control groove and There are at least two locking positions, and the axial drive control mechanism moves in the control groove and the locking positions. The invention has a reliable connection with the implant, prevents the implant from being disengaged before reaching the designated position, and only needs one-handed operation to disengage the connection and release the implant.

Description

technical field [0001] The invention belongs to the technical field of medical devices, and relates to a fast-release implant pushing device and an implant delivery system. Background technique [0002] In recent years, interventional therapy has been widely used in clinical applications. Interventional therapy refers to placing various materials and instruments into the heart, arteries, veins and other parts of the human body through catheter technology to treat cardiovascular diseases. For example, a vena cava filter (VCF for short) is placed in the patient's superior and inferior vena cava through catheter intervention to capture the dislodged thrombus and prevent the thrombus from moving up the vena cava system to the heart and lungs, causing pulmonary embolism; or blocking the left atrial appendage The device is delivered to the left atrial appendage to prevent the thrombus generated by atrial fibrillation from ascending to the brain, causing stroke or other systemic e...

AI Technical Summary

Problems solved by technology

This type of delivery system has certain limitations: For delivery systems connected with threads, the operating handle and push device need to be rotated when releasing, but the operator must operate with both hands, which is inconvenient to operate

For the delivery system connected by friction force, in the curved blood vessel path of the human body, the friction force is constantly changing, and the friction force may be too large or too small, which will cause the implant to be stuck or released early, resulting in the failure of the operation

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