Conveying device and conveying system

A delivery device and shell technology, applied in the direction of puncture needles, stents, heart valves, etc., can solve problems such as high intracavitary pressure, adverse consequences, and unsatisfactory release positions of artificial valves, and achieve accurate and reliable release positions and reduce risks Effect

Active Publication Date: 2021-06-15
LIFETECH SCI (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although transcatheter intervention to replace the natural mitral valve is an effective method for treating mitral valve insufficiency, the release position of the artificial valve may Unsatisfactory or released under the shock of blood flow and shifted
If there is valve displacement at this time, the operation will fail due to paravalvular leakage, resulting in serious adverse consequences

Method used

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  • Conveying device and conveying system
  • Conveying device and conveying system
  • Conveying device and conveying system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] like figure 1 As shown, the delivery device 100 of this embodiment includes a control assembly 10 and a catheter assembly 20 . The control assembly 10 is connected to the proximal end of the catheter assembly 20 for controlling the movement of the catheter assembly 20 . The control assembly 10 includes a first control mechanism 11 , a second control mechanism 12 and a third control mechanism 13 . Wherein, the second control mechanism 12 is arranged between the first control mechanism 11 and the third control mechanism 13, the first control mechanism 11 is arranged near the proximal end of the control assembly 10, and the third control mechanism 13 is arranged near the far end of the control assembly 10 . Also refer to figure 2 , the catheter assembly 20 includes an outer tube 21 , a middle tube 22 and an inner tube 23 . The distal end of the inner tube 23 is provided with a threaded structure for connecting with the implant; the middle tube 22 is sleeved outside th...

Embodiment 2

[0040] The structure of the conveying device in this embodiment is basically the same as that of the conveying device 100 in Embodiment 1, except for the first control mechanism 31 . like Figure 7 As shown, the first control mechanism 31 of this embodiment includes a housing 34 , a receiving part 352 and a limiting part 351 . The structure of the housing 34 in this embodiment is basically the same as that of the housing 14 in the first embodiment, and will not be repeated here. The receiving part 352 is provided with an axial groove 353 and a circumferential groove 354, and the circumferential groove 354 is close to the proximal end of the axial groove 353, and the two are not connected. like Figure 8 As shown, the limiting member 351 includes a pressing plate 358 and a second stop body 357 and a third stop body 359 disposed inside the press plate 358 . Wherein the second stop body 357 is close to the distal end of the pressing plate 358 , and the third stop body 359 is c...

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PUM

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Abstract

The invention discloses a delivery device, comprising a catheter assembly and a control assembly, the control assembly is arranged at the proximal end of the catheter assembly, the control assembly includes a first control mechanism, the first control mechanism includes a hollow shell and a limiting unit, the limiting unit It includes a limiting part and a hollow receiving part, the receiving part is arranged in the housing; the outer surface of the receiving part is provided with an axial groove and a circumferential groove, and the limiting part is partially accommodated in the axial groove or the In the circumferential groove, the housing can move axially or rotate circumferentially, and the housing drives the limiting member to move axially or rotate circumferentially. The delivery device and the delivery system of the present invention directly control the rapid conversion of the connecting catheter in the catheter assembly connected to the implant from axial movement to circumferential movement by setting the first control part, so as to realize the accurate and reliable release position of the implant , so that the implant fits closely with the tissue, reducing the risk of paravalvular leakage.

Description

technical field [0001] The invention relates to the field of interventional medicine, in particular to a delivery device and a delivery system. Background technique [0002] The human heart is divided into four chambers, each with its own "outlet," and a total of four valves (mitral, aortic, pulmonary, and tricuspid) that ensure the Blood can flow in the designated direction in the cardiovascular system. The mitral valve is located between the left atrium and the left ventricle. The normal mitral valve ensures blood circulation from the left atrium to the left ventricle and prevents blood from flowing back from the left ventricle of the heart to the left atrium. The occurrence of various heart diseases or degenerative diseases may lead to mitral valve dysfunction, making the mitral valve become abnormally narrowed or dilated. The loss of mitral valve function will affect the normal work of the heart, resulting in gradual weakness or life-threatening. [0003] Aiming at th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/95
CPCA61F2/95A61B17/34A61F2/24A61F2/966
Inventor 江巍彭峰
Owner LIFETECH SCI (SHENZHEN) CO LTD
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