CN-114903654-B - Transcatheter heart valve annulus forming system

Abstract

The invention belongs to the technical field of medical appliances, and discloses a transcatheter heart valve annulus forming system which comprises a valve puncture needle, a bendable guide catheter and an annulus forming rivet, wherein the valve puncture needle is arranged in the bendable guide catheter, an inner cavity capable of passing through a guide wire is formed in the middle of the valve puncture needle, the annulus forming rivet comprises a lockable male rivet and a lockable female rivet, and apertures for passing through the guide wire are formed in the middle of the male rivet and the middle of the female rivet. The valve puncture needle is used for puncturing under the guidance of ultrasonic, so that the operation flow is greatly optimized, the puncture safety is ensured, the operation time and the operation difficulty are reduced, the annuloplasty rivet is used for finishing the annuloplasty through the track established by the guiding catheter with adjustable bending, and the rivet contains memory alloy woven metal gaskets, so that the cutting damage of the rivet to the valve is reduced, and the operation safety and success rate are improved.

Inventors

• WANG JIAN
• HE BEN

Assignees

• 王建

Dates

Publication Date

20260505

Application Date

20220510

Claims (3)

1. 1. A transcatheter heart annuloplasty system comprising a valve needle, a deflection catheter that is adjustable, and an annuloplasty rivet; the valve puncture needle is arranged in a bendable guiding catheter, and an inner cavity through which a guide wire can pass is formed in the middle of the valve puncture needle; The annular forming rivet comprises a male rivet and a female rivet which can be locked by self, the middle of the male rivet and the middle of the female rivet are respectively provided with an aperture for passing through a guide wire, and the head end of the male rivet can rebound through a metal bolt to complete locking after passing through the female rivet; The male rivet comprises a bolt structure and a memory alloy woven metal gasket connected with the bolt structure, and the female rivet comprises a metal ring and a memory alloy woven metal gasket connected with the metal ring.
2. 2. The transcatheter heart valve annuloplasty system of claim 1, wherein the latch structure is made of nickel-titanium alloy.
3. 3. The transcatheter heart annuloplasty system of claim 1, wherein the valve needle is a hollow metal spike connectable to a syringe at one end.

Description

Transcatheter heart valve annulus forming system Technical Field The invention belongs to the technical field of medical appliances, and particularly relates to a transcatheter heart valve annulus forming system. Background Currently, functional heart membrana diseases are often secondary to ischemic or dilated cardiomyopathy. With the aggravation of aging population, senile valvular disease and valve functional lesions caused by coronary heart disease and myocardial infarction are more and more common. These secondary changes are often irreversible and difficult to correct by existing surgical valve procedures. For example, approximately 160 ten thousand tricuspid regurgitation patients in the united states, only 0.5% of which receive surgical valve replacement or repair treatment. According to epidemiological data in developed countries, functional/secondary tricuspid regurgitation is up to 80%, and progression of right heart failure in these patients is associated with chordae traction due to tricuspid ring enlargement and right ventricular pressure overload. Currently, a variety of minimally invasive therapeutic devices for functional heart valve diseases are in clinical exploration. The method is not widely used clinically because the operation steps are too complicated and the method is only suitable for partial patients. Therefore, the patent of the invention aims at the cause of the enlargement of the valve annulus in the functional heart valve disease and proposes a whole set of transcatheter heart valve annuloplasty system which can shrink the enlarged valve annulus, increase the edge involution of the valve and reduce the valve regurgitation. Through the analysis, the prior art has the problems and defects that the operation steps of the existing minimally invasive therapeutic apparatus for the functional heart valve disease are complicated, and the minimally invasive therapeutic apparatus is only suitable for partial patients and cannot be widely used clinically. The problems and defects are that 1, no special minimally invasive instrument for tricuspid valve forming is authenticated by the FDA in the United states so far, all instruments are in a research and development stage, 2, the minimally invasive intervention difficulty is high due to the special anatomical structure and pathophysiological mechanism of the tricuspid valve, the operation steps of the existing minimally invasive therapeutic instrument are complex, the application range is limited, 3, the instruments cannot realize domestic replacement at present, and even if the instruments are marketed into China, patients face the conditions of high cost and heavy burden. The method has the significance of solving the problems and the defects that 1, aiming at the most common cause of the current tricuspid regurgitation patient, the method adopts a minimally invasive approach to reduce part of the valve annulus so as to achieve the purpose of reducing valve regurgitation, 2, the method simplifies the operation steps of minimally invasive valve interventional instruments, improves the operation safety, greatly reduces the operation wound, 3, the method can realize domestic replacement as soon as possible, reduces the cost of the medical instruments and brings a brand-new minimally invasive treatment means for heart valve patients. Disclosure of Invention The present invention addresses the problems with the prior art by providing a transcatheter heart valve annuloplasty system. The invention is achieved by a transcatheter heart valve annuloplasty system comprising: A valve puncture needle, a bendable guiding catheter and an annuloplasty rivet; the valve puncture needle is arranged in a bendable guiding catheter, and an inner cavity through which a guide wire can pass is formed in the middle of the valve puncture needle; the annuloplasty rivet comprises a lockable male rivet and a lockable female rivet, and the middle of the male rivet and the middle of the female rivet are respectively provided with an aperture for passing through a guide wire. Further, the male rivet comprises a bolt structure and a memory alloy woven metal gasket connected with the bolt structure, and the female rivet comprises a metal ring and a memory alloy woven metal gasket connected with the metal ring. Further, the bolt structure is made of nickel-titanium alloy. Further, the valve puncture needle is a hollow metal long needle with one end capable of being connected with a syringe. By combining all the technical schemes, the invention has the advantages and positive effects that: The invention can lead the operation to be more direct and simple through the guiding catheter with adjustable bend, also reduces the occurrence of access complications, and greatly optimizes the operation flow by puncturing the valve puncture needle only under the guidance of ultrasound, ensures the safety of puncturing and reduces the operation time and difficulty. According to the inve