CN-119680084-B - Heart valve saccule dilating catheter

CN119680084BCN 119680084 BCN119680084 BCN 119680084BCN-119680084-B

Abstract

The application provides a heart valve balloon dilation catheter which is applied to the technical field of medical appliances, and the method comprises a balloon, a protection net, a support net, an inner tube, an outer tube, a connecting structure and a head end structure; the balloon is characterized in that the protecting net is wrapped on the outer surface of the balloon, the supporting net is provided with supporting legs, the supporting net is fixedly wrapped on the outer surface of the protecting net through the supporting legs, a target interval is formed between the supporting net and the protecting net, the first end of the balloon is fixedly connected with the head end structure, the second end of the balloon is fixedly connected with the first end of the outer tube, the second end of the outer tube is fixedly connected with the connecting structure, the inner tube extends through the balloon, the first end of the inner tube is connected with the head end structure, the second end of the inner tube is fixedly connected with the connecting structure, and the outer tube is wrapped on the outer surface of the inner tube. In the heart valve balloon dilation catheter, the target interval can provide a blood flowing space, so that blood can smoothly pass through the heart valve balloon dilation catheter, and the risks of ventricular fibrillation and cardiac arrest are reduced, so that the safety of heart operation can be improved.

Inventors

WANG YUPENG
CAI TAO
ZHAO HAIBIN
MA YIBO

Assignees

康迪泰科(北京)医疗科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241217

Claims (10)

1. The heart valve balloon dilation catheter is characterized by comprising a balloon, a protection net, a support net, an inner tube, an outer tube, a connecting structure and a head end structure; the protection net is wrapped on the outer surface of the saccule, the protection net is provided with supporting legs, the supporting net is fixedly wrapped on the outer surface of the protection net through the supporting legs, a target interval is formed between the supporting net and the protection net, and the target interval is used for adapting to the blood flow requirement of the left ventricular outflow tract; The first end of sacculus with head end structure fixed connection, the second end of sacculus with the first end fixed connection of outer tube, the second end of outer tube with connection structure fixed connection, the inner tube extends through the inside of sacculus, the first end of inner tube with head end structure is connected, the second end of inner tube with connection structure fixed connection, the outer tube cladding is in the surface of inner tube.
2. The heart valve balloon dilation catheter of claim 1 wherein the balloon comprises a cylindrical portion, a first conical portion and a second conical portion, the protective mesh is wrapped around an outer surface of the cylindrical portion, the first conical portion is fixedly connected to the head end structure, the protective mesh extends to the first conical portion through a first wire post structure and is fixedly connected to the head end structure, the second conical portion is fixedly connected to the first end of the outer tube, and the protective mesh extends to the second conical portion through a second wire post structure and is fixedly connected to the first end of the outer tube.
3. The heart valve balloon dilation catheter of claim 1 wherein there are two swaged visualization rings on the inner tube, the two visualization rings being used to identify an effective length of the balloon.
4. The heart valve balloon dilation catheter of claim 1 wherein the connection structure comprises a stress dispersion tube and a connection seat, the second end of the inner tube is fixedly connected to the connection seat, the stress dispersion tube is wrapped around the outer surface of the outer tube, and the second end of the outer tube is fixedly connected to the connection seat.
5. The heart valve balloon dilation catheter of claim 4 wherein the connection hub is provided with a guidewire lumen for pushing a guidewire to a heart lesion and a filling lumen for a syringe to drive liquid into the balloon to inflate the balloon.
6. The heart valve balloon dilation catheter of any one of claims 1-5 wherein the protective mesh is a resilient alloy.
7. The heart valve balloon dilation catheter of any one of claims 1-5 wherein the support mesh is a wire framework structure.
8. The heart valve balloon dilation catheter of claim 3 wherein the visualization ring is platinum iridium alloy.
9. The heart valve balloon dilation catheter of any one of claims 1-5 wherein the outer tube is a polyether block amide.
10. The heart valve balloon dilation catheter of claim 4 wherein the stress dispersion tube is silicone rubber.

Description

Heart valve saccule dilating catheter Technical Field The application relates to the technical field of medical equipment, in particular to a heart valve saccule dilating catheter. Background In recent years, aortic valve stenosis has become one of the most common heart valve diseases in the clinic. For severe aortic valve stenosis, past surgical valve replacement has been the standard treatment regimen, and as transcatheter valve technology advances, more and more patients have begun to receive less invasive transcatheter aortic valve replacement (TRANSCATHETER AORTIC VALVE REPLACEMENT, TAVR). Current transcatheter aortic valve replacement procedures can be categorized, depending on the manner in which they are opened, into balloon-expandable interventional valves, self-expanding (self-expanding) interventional valves. The balloon-expanded interventional valve is mechanically compressed in vitro on a delivery system, delivered to a predetermined location, and then expanded and secured using a high pressure non-compliant balloon. The existing heart valve balloon dilation catheter cannot enable blood flow to smoothly pass through the balloon in a complete filling state, so that a left ventricle outflow channel is completely blocked in the balloon dilation process, serious complications such as ventricular fibrillation and cardiac arrest are caused for patients with lower cardiac function reserves, and a stable pulse pressure level cannot be maintained in an operation, so that the safety is lower. Disclosure of Invention The embodiment of the application provides a heart valve balloon dilation catheter, which aims to solve the problem of lower safety of the existing heart valve balloon dilation catheter. In order to solve the technical problems, the application is realized as follows: in a first aspect, embodiments of the present application provide a heart valve balloon dilation catheter comprising a balloon, a protective mesh, a support mesh, an inner tube, an outer tube, a connection structure, and a head end structure; the protective net is wrapped on the outer surface of the saccule, the protective net is provided with supporting legs, and the supporting net is fixedly wrapped on the outer surface of the protective net through the supporting legs and forms a target interval with the protective net; The first end of sacculus with head end structure fixed connection, the second end of sacculus with the first end fixed connection of outer tube, the second end of outer tube with connection structure fixed connection, the inner tube extends through the inside of sacculus, the first end of inner tube with head end structure is connected, the second end of inner tube with connection structure fixed connection, the outer tube cladding is in the surface of inner tube. Optionally, the balloon includes cylinder portion, first circular cone portion and second circular cone portion, the protection net parcel is in the surface of cylinder portion, first circular cone portion with head end structure fixed connection, the protection net through first silk post structure extend to first circular cone portion, and with head end structure fixed connection, the second circular cone portion with the first end fixed connection of outer tube, the protection net through second silk post structure extend to second circular cone portion, and with the first end fixed connection of outer tube. Optionally, the inner tube has two development rings formed by forging, and the two development rings are used for marking the effective length of the balloon. Optionally, the connection structure includes stress dispersion pipe and connecting seat, the second end of inner tube with connecting seat fixed connection, stress dispersion pipe cladding is in the surface of outer tube, stress dispersion pipe with connecting seat fixed connection. Optionally, be provided with seal wire chamber and filling chamber on the connecting seat, the seal wire chamber is used for pushing the seal wire to heart pathological change position, filling chamber is used for the syringe to the sacculus drives liquid, makes the sacculus inflation. Optionally, the material of the protection net is elastic alloy. Optionally, the structure of the supporting net is a metal wire framework structure. Optionally, the developing ring is made of platinum iridium alloy. Optionally, the material of the outer tube is polyether block amide. Optionally, the stress dispersing tube is made of silicone rubber. The heart valve balloon dilation catheter comprises a balloon, a protection net, a support net, an inner tube, an outer tube, a connecting structure and a head end structure, wherein the protection net is wrapped on the outer surface of the balloon, support legs are arranged on the protection net, the support net is fixedly wrapped on the outer surface of the protection net through the support legs, a target interval is formed between the support net and the protection net, the