Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

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

Pending Publication Date: 2022-04-26
SHANGHAI HEALING MEDICAL DEVICES CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the valve stent in the prior art cannot be recovered once released and affects the positioning accuracy of the stent body, thereby providing a valve stent delivery release structure

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Valve stent delivery and release structure
  • Valve stent delivery and release structure
  • Valve stent delivery and release structure

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a valve stent delivery and release structure, which comprises a valve stent and a delivery device, and the valve stent has a shape memory function, is in a radially-expanded unfolded configuration in a free state, and is in a contracted configuration in a state of being contracted and loaded in an outer sheath tube. A plurality of connecting ends with connecting holes are arranged at the near end of the valve support, the delivery device comprises an outer sleeve, a multi-cavity tube and a release mechanism, the outer sleeve is arranged outside the multi-cavity tube in a sleeving mode and axially slides relative to the multi-cavity tube, a plurality of containing cavities parallel to the axis are formed in the tube wall of the multi-cavity tube, and the release mechanism is arranged in the containing cavities in a penetrating mode. The releasing mechanism comprises a fixing strip and a releasing strip. The valve stent delivery and release structure provided by the invention can be recycled and repositioned after the valve stent part is released, so that the positioning precision of the stent body is ensured.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a valve support delivery and release structure. Background technique [0002] In recent years, Transcatheter Aortic Valve Implantation (TAVI) has become an alternative to surgery for the treatment of severe aortic stenosis due to its advantages of safety, less trauma, and faster recovery. Some researchers tried to use CoreValve self-expanding stents and Sapien valve stents for patients with simple aortic insufficiency, and found that the incidence of inaccurate stent positioning and improper implantation was as high as 20%. These two stents are basically no longer used. for patients with aortic insufficiency. [0003] The patent with the publication number CN208864574U discloses a positionable and retrievable transcatheter implantable aortic valve device. The device realizes the aortic valve through the T-shaped connecting claw structure provided at the outflow end of th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): A61F2/24A61F2/966A61F2/95
CPCA61F2/2427A61F2/2436A61F2/966A61F2002/9534
Inventor 陈韵岱陆树洋陈晓韦承涛黄韬张铭宇刘冰冰李阳
Owner SHANGHAI HEALING MEDICAL DEVICES CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com