Valve stent delivery and release structure
A release mechanism and valve technology, which is applied in the field of medical devices, can solve problems such as inability to achieve recovery and affect the positioning accuracy of the stent body, and achieve the effect of simple and convenient complete release operation, ensure positioning accuracy, and reduce the difficulty of surgery
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Embodiment 1
[0033] Such as Figure 1-3 As shown, a valve stent 100 delivery and release structure includes a valve stent 100 and a delivery device 510. The proximal end of the valve stent 100 is provided with several connection ends 120 with connection holes, and the connection part is provided with The connecting hole, the delivery device 510 includes an outer tube 512, a multi-lumen tube 517 and a release mechanism, the outer tube 512 is sleeved outside the multi-lumen tube 517, and slides axially relative to the multi-lumen tube 517, the described The tube wall of the multi-lumen tube 517 is provided with several accommodation cavities 518 parallel to the axis. The release mechanism is penetrated in the accommodation cavity 518. The release mechanism includes a fixing bar 520 and a releasing bar 521. The fixing bar 520 The distal end of the multi-lumen tube 517 is provided with an angled section 523 facing the axis of the multi-lumen tube 517. The angled section 523 is provided with a ...
Embodiment 2
[0040] Such as Figure 4As shown, the angled section 523 of the fixing strip 520 penetrates into the connecting hole from the radial inner side of the connecting terminal 120, and the locking hole of the angled section 523 passes over the connecting hole, and the release strip 521 passes through the radial direction of the connecting terminal 120. Pass outward through the locking hole of the corner section 523 of the fixing bar 520 .
[0041] In this embodiment, the release strip 521 is a long strip with a circular cross section.
[0042] In this embodiment, further, the angled section 523 is an arc angle of 15°-45° with an arc transition.
[0043] Combining the first and second embodiments above, in actual use, the delivery and release structure of the valve stent 100 has a delivery state, a half-release state and a complete release state;
[0044] Delivery state: the release strip 521 passes through the locking hole of the angled section 523 of the fixing strip 520, so tha...
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