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Support valve and conveying device thereof

A delivery device and valve technology, applied in the fields of medical devices and interventional treatment devices, can solve the problems of easy judgment errors, easy tearing of valve leaflets, improper placement, etc., and achieve the effect of avoiding tearing and suturing firmly.

Active Publication Date: 2013-03-06
BEIJING MED ZENITH MEDICAL SCI CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the biggest disadvantage of this invention is: on the one hand, due to the restriction of the stent structure, there is an obvious defect in the stress state of the leaflet and the sutured part of the stent, and the leaflet is easy to tear during the operation of the valve; on the other hand, although the stent is considered The recovery and reset function of the valve, but because the stent valve is not fully released, there are many differences in the movement state and wall-attachment performance of the leaflets and the fully released state, and it is easy to make mistakes in the judgment during the placement process, resulting in the position of the stent valve slipping, paravalvular leak
The same problem faced by this invention is that once the balloon is opened, if it is placed in an improper position, the valve cannot be repositioned, which brings great risks to the life of the patient

Method used

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  • Support valve and conveying device thereof
  • Support valve and conveying device thereof
  • Support valve and conveying device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] see Figure 16 , 17 , Figure 16 is a schematic diagram of the stent valve surgery process, Figure 17Schematic diagram of the stent-valve release process. For conventional femoral artery puncture, under the guidance of DSA (Digital subtraction angiography, digital subtraction angiography), the first choice is to penetrate the guide wire 16 from the femoral artery to the left ventricle, and the delivery device equipped with a stent valve enters the aortic valve along the guide wire 25 After positioning, the outer tube 21 of the delivery device is withdrawn, the stent valve is opened, and the stenotic aortic valve 25 is stretched and fixed. Ultrasonic detection of the operating state of the stent valve, the fluid mechanical properties of the blood flow and the situation of regurgitation and paravalvular leakage, if the performance meets the requirements, operate the control piece on the tube base, and connect the connecting line in the arc connecting tube 19 to the T...

Embodiment 2

[0079] After releasing the stent valve for the first time according to the method in Example 1, the operating state of the stent valve, the hydrodynamic properties of blood flow, regurgitation, and paravalvular leakage were detected by ultrasound. If the stent valve was positioned upward or downward, it was not effective. Fix the stent valve in the calcified lesion area of ​​the valve. At this time, since the stent valve is not completely separated from the delivery device, the stent valve can be put into the outer tube 21 according to the reverse procedure of releasing the stent valve, and the stent valve is repositioned. The method releases the valve and completes the procedure.

Embodiment 3

[0081] After releasing the stent valve for the first time according to the method in Example 1, the operating state of the stent valve, the hydrodynamic performance of the blood flow, and the situation of regurgitation and paravalvular leakage are detected by ultrasound. Paravalvular leakage, which cannot be effectively fixed in the calcified lesion area of ​​the valve. At this time, since the stent valve is not completely separated from the delivery device, the stent valve can be put into the outer tube 21 according to the reverse procedure of releasing the stent valve, and the delivery device can be withdrawn from the body. , select a stent valve of suitable size, reposition the stent valve according to the method in Example 1, and complete the operation.

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Abstract

The invention discloses a support valve and a conveying device thereof. The support valve comprises a support and a valve leaflet; and the support is of a closed grid structure with two larger ends and a smaller middle part, and grids on one end are uniformly contracted and divided into a claw with three top ends with connecting holes. The valve leaflet is sewed on the inner side of the support. The invention also provides a conveying device of the support valve; the front end of the conveying device is provided with three connecting pipes; and the wires in the connecting pipes can be connected with the claw, provided with the top ends with the connecting holes, of the support valve to install the support valve into the conveying device. According to the support valve and the conveying device thereof, the inappropriate position of the support valve when being placed can be reset through the conveying device and the inappropriate selected size can be recovered through the conveying device, so that the difficulty of a doctor during a surgery is reduced, and the success rate of the surgery is increased.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to the field of interventional treatment equipment; it relates to heart valve technology, in particular to a stent valve and a delivery device thereof. Background technique [0002] With the development of my country's aging society, the incidence of valvular degeneration in the elderly is increasing, and aortic stenosis has gradually become the most common valvular heart disease in this population. For patients with severe aortic stenosis, surgical aortic valve replacement used to be the only treatment that could prolong life. The specific method was to open the chest cavity under general anesthesia, and first intubate the aorta and vena cava connected to the heart. Establish an extracorporeal circulation pathway connected to an artificial heart-lung machine. Use a special method to stop the heart, then cut the heart open, remove the diseased heart valve, and then sew the artifici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
Inventor 虞奇峰可大年孟坚代高旭史欢欢姜安坤
Owner BEIJING MED ZENITH MEDICAL SCI CORP LTD
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