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Heart valve implantation instrument with anchoring device

A heart valve and anchoring device technology, applied in the field of medical devices, can solve the problems of easy falling off, unstable fixation, and no heart valve implantation device.

Active Publication Date: 2016-06-01
NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of anchoring system and its delivery method only use the force of the shape memory alloy itself to puncture into the tissue. For example, for some puncture sites with tough tissues such as endocardium, the puncture force is not enough, and it is easy to break into the tissue during the puncture process. Slipping, unstable fixation after being inserted, easy to fall off, etc.
[0011] The current clinical results show that although the above-described techniques have certain effects in the anchoring function and heart valve interventional therapy, there is no ideal heart valve implantation device with an anchoring device that can realize the Functional heart valve prosthesis is accurately positioned and securely anchored at the site of treatment

Method used

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  • Heart valve implantation instrument with anchoring device
  • Heart valve implantation instrument with anchoring device
  • Heart valve implantation instrument with anchoring device

Examples

Experimental program
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Effect test

specific Embodiment 1

[0050] Such asFigures 1a-1d and Figures 2a-2g As shown, a heart valve implantation device with an anchoring device according to the present invention includes a heart valve prosthesis 1 , two sets of anchoring needles 2 , two sets of anchoring needle release devices 3 and a delivery system 4 . Such as Figure 1a As shown, the two sets of anchor needle release devices 3 are distributed symmetrically. Such as Figure 1b As shown, the heart valve prosthesis 1 is a prosthesis for mitral valve replacement, including a valve frame 11, a valve 12, and an anchoring area 13. The valve frame 11 is cut from a shape-memory nickel-titanium alloy tube and preheated into a shape. The valve 12 is firmly fixed on the valve frame 11, the valve 12 is made of porcine pericardium, and the anchoring area 13 is made of Dacron film, which is fixed on the heart valve prosthesis 1. near end. Such as Figure 1c As shown, the anchoring needle 2 is made of a shape memory nickel-titanium wire with a ...

specific Embodiment 2

[0052] Such as Figures 3a-3e As shown, a heart valve implantation device with an anchoring device according to the present invention includes a heart valve prosthesis 1 , four sets of anchoring needles 2 , four sets of anchoring needle release devices 3 and a delivery system 4 . Such as Figures 3a-3c As shown, the heart valve prosthesis 1 is a prosthesis for tricuspid valve replacement, which is suitable for tricuspid valve replacement surgery through the transapical approach, and the four sets of anchor needle release devices 3 are evenly distributed on the circumference. The difference between this embodiment and the first embodiment is that the valve 12 is made of polymer membrane, and the anchoring position, that is, the anchoring area 13 is located near the atrium 5 . Such as Figure 3d As shown, the anchoring needle 2 is made of a shape memory nickel-titanium wire with a diameter of 0.35 mm, the most distal end 21 of the anchoring needle 2 is sharp, and the distal pa...

specific Embodiment 3

[0054] Such as Figures 5a-5bAs shown, a heart valve implantation device with an anchoring device according to the present invention includes a heart valve prosthesis 1, three sets of anchor needles 2, three sets of anchor needle release devices 3, a delivery system 4 and a set of Support device 8.

[0055] preferred, such as Figure 5a and 5c As shown, the heart valve prosthesis 1 is a prosthesis for mitral valve repair, and is suitable for mitral valve repair surgery through the transapical approach. The difference between this embodiment and the second embodiment is that the valve frame 11 is formed by winding shape-memory nickel-titanium alloy wire and preheated and shaped, and the valve 12 is made of polymer membrane and fixed on the The valve frame 11 extends into the ventricle 7, and the valve 12 moves together with the autologous valve leaflets to prevent the valve leaflets from turning into the atrium 5 due to the prolapse of the chordae tendineae when the autologo...

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Abstract

The invention relates to a heart valve implantation device with an anchoring device, comprising a heart valve prosthesis, at least two sets of anchoring needles and a release device thereof, the proximal end of the anchoring needle is provided with an anti-off end; the anchoring needle release device It is detachably connected with the heart valve prosthesis, and the anchoring needle release device includes a delivery tube and a push rod. Curved, the part of the delivery tube that can be bent is a curved section, and a rigid section is provided at the farthest end of the delivery tube. The length from the most distal end of the delivery tube to the proximal end of the curved section is greater than or equal to the minimum radius of the patient's own valve tissue ring. 1 / 6 of the circumference of the circle, the anchor needle is pre-loaded into the distal part of the delivery tube, located at the distal end of the push rod, pushing the push rod can move the anchor needle to the distal end of the delivery tube, so that the heart The valve prosthesis is fixed between the autologous tissue and the anti-off end. The invention can realize accurate positioning and firm anchoring.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a heart valve implantation device with an anchoring device. Background technique [0002] Heart valves mainly refer to the left atrioventricular valve, right atrioventricular valve, pulmonary valve and aortic valve. The tricuspid valve at the right atrioventricular orifice is a sail-shaped valve with three approximately triangular pieces, and the bottom of the valve is attached to the fibrous ring of the atrioventricular orifice. On the function, the annulus fibrosus, valves, chordae and papillary muscles can be seen as the tricuspid valve complex (tricuspidvalvarcomplex). The fibrous annulus, mitral valve, chordae and papillary muscles of the left atrioventricular orifice are structurally and functionally a whole, collectively known as the mitral valve complex (mitralvalvecomplex). The aorta is located in the center of the fibrous stent structure of the heart, with th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24A61F2/966
CPCA61B17/0644A61B17/068A61B2017/00309A61B2017/00867A61B2017/0645A61B2017/0649A61F2/2436A61F2220/0016A61F2230/0006A61F2230/0065A61F2/2418
Inventor 李佳楠吕世文徐志云李毅斌陈志
Owner NINGBO JENSCARE BIOTECHNOLOGY CO LTD
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