IMPLANT WITH ANCHORING DEVICE FOR HEART VALVE DISEASE

摘要

An implant with anchoring device for heart valve disease comprises a cardiac valve prosthesis (1), at least two sets of anchoring needles (2) and at least two sets of anchoring needle releasing devices (3). Proximal end of the anchoring needles (2) are provided with anti-disengagement ends (23). The anchoring needle releasing devices (3) are detachably connected to the cardiac valve prosthesis (1). The anchoring needle releasing devices (3) comprise delivery tubes (31) and shafts (32). Distal sections of the anchoring needle releasing devices (3) are in preset shapes. The shafts (32) can be pushed to force the anchoring needles (2) to move toward the distal ends of the delivery tubes (31), so that the cardiac valve prosthesis (1) is fixed between autogenous tissue (6) and the anti-disengagement ends (23) to achieve accurate positioning and firm anchoring of the cardiac valve prosthesis (1).

主权项

1. An implant with anchoring device for heart valve disease, comprising a cardiac valve prosthesis, at least two sets of anchoring needles, and at least two sets of anchoring needle releasing devices; wherein, the most distal end of the anchoring needle is sharp; a distal section of the anchoring needle has a preset shape; a proximal end of the anchoring needle is provided with an anti-disengagement end; the anchoring needle releasing device is detachably connected to the cardiac valve prosthesis; the anchoring needle releasing device comprises a delivery tube and a shaft; a distal section of the anchoring needle releasing device is in a preset shape, so as to enable a distal section of the delivery tube bend wholly or partially, and to enable the distal end of the delivery tube press tightly against the cardiac valve prosthesis or press tightly against autogenous tissue before the anchoring needle is moved; the most distal end of the delivery tube has a rigid section; a bendable part of the delivery tubes is a bent section; a length d from the most distal end of the delivery tube to the most proximal end of the bent section is larger than or equal to ⅙ of a circumference of a circle formed by the minimum radius of a native heart valve annulus of a patient; the anchoring needle is pre-placed inside the distal section of the delivery tube in a stretched state; the shaft is arranged inside the delivery tube; the anchoring needle is disposed beside a distal end of the shaft; the shaft can be pushed to force the anchoring needles to move toward the distal ends of the delivery tubes; the distal section of the anchoring needle restores to the preset shape after the anchoring needle is pushed out of the delivery tube; and the cardiac valve prosthesis is fixed between autogenous tissue and the anti-disengagement end of the anchoring needle.