CN-114948346-B - Mitral valve intervention valve fixing operation method

Abstract

The invention provides a mitral valve intervention valve fixing operation method which comprises the following steps of nailing a plurality of fixing nails into the lateral wall of a left atrium above a mitral valve, then connecting the fixing nails to a fixing disc positioned on an atrial septum through connecting wires to form a plurality of fixing lines above the mitral valve, forming a plurality of fixing lines above the mitral valve through the fixing method, and enabling the fixing lines to provide stable fixing support for an intervention valve implanted below, so that the problem that the current intervention mitral valve is difficult to stably anchor can be effectively solved, and the mitral valve intervention valve fixing operation method is simple and convenient to operate.

Inventors

• ZHOU DAXIN
• PAN WENZHI
• GE JUNBO

Assignees

• 复旦大学附属中山医院

Dates

Publication Date

20260508

Application Date

20220614

Claims (10)

1. 1. A mitral valve intervention valve fixing device is characterized by comprising a fixing disc, a plurality of fixing nails and corresponding 1:1 paired connecting lines, wherein the fixing nails are nailed into the lateral wall of a left atrium above a mitral valve, the fixing disc is positioned on an atrial septum, one end of each connecting line is connected with the fixing nails, the other end of each connecting line is connected to the same fixing disc, a plurality of fixing lines are formed above the mitral valve, and the fixing lines can provide fixing support for the mitral valve intervention valve implanted below the fixing lines.
2. 2. The mitral valve intervention valve fixation device of claim 1, further comprising a stapler adapted to staple the plurality of staples into a left atrial sidewall above the mitral valve.
3. 3. The mitral valve intervention valve fixation device of claim 2, further comprising a delivery sheath adapted to deliver the plurality of staples and nailers to the left atrium.
4. 4. The mitral valve intervention valve fixation device of claim 3, wherein the fixation disc is released at an atrial septum along the connection line and delivery sheath.
5. 5. The mitral valve intervention valve fixation device of claim 1, wherein the fixation disc is a double-disc structure woven from memory alloy wires and heat-set.
6. 6. The mitral valve intervention valve fixation device of claim 1, further comprising a knotter adapted to knot a connection wire penetrating a central mesh of the fixation disc at the fixation disc.
7. 7. The mitral valve intervention valve fixation device of claim 6, further comprising a string cutter adapted to cut a connecting string that completes a knot at the fixation disc.
8. 8. The mitral valve intervention valve fixation device of claim 1, wherein the fixation pin comprises a helical needle and a fixation head, the helical needle being fixed to a proximal end of the fixation head, the fixation head comprising a helical section at the proximal end and a circumflex section at the distal end, the circumflex section being of a laminar structure.
9. 9. The mitral valve intervention valve fixation device of claim 8, wherein the helical segment is an external threaded structure that mates with internal threads provided on an inner wall of an outer tube of a stapler adapted to staple the number of staples into a left atrial sidewall above the mitral valve, the segment having an outer diameter that is equal to or greater than an outer diameter of the helical needle.
10. 10. The mitral valve intervention valve fixation device of claim 1, wherein a connection line between the plurality of fixation pins and the fixation disk is taut.

Description

Mitral valve intervention valve fixing operation method Technical Field The invention relates to the field of medicine, in particular to a mitral valve intervention valve fixing operation method. Background The mitral valve is attached to the left atrium and the peripheral edge of the left ventricle, and is connected to papillary muscles by chordae tendineae, so that the mitral valve has the function of preventing blood in the left ventricle from flowing back to the left atrium, and plays a role of a single valve. Mitral regurgitation is a common heart disease. Severe mitral regurgitation can cause enlargement of the left ventricle, ultimately leading to left ventricular contractile failure dysfunction and heart failure, as well as left atrial enlargement, atrial fibrillation, and pulmonary hypertension. Surgical operation is the most main treatment means of mitral regurgitation at present, but has the defects of large wound, more complications, high mortality rate and the like. In recent years, transcatheter valve replacement has become a current heart interventional therapy instrument development hotspot due to the low trauma and high safety. At present, the domestic and foreign classmates have designed and developed a plurality of mitral valve replacement devices, but most of the devices are in an exploration stage, and a great part of designs have proved to be infeasible. Those skilled in the art are still working to develop a transcatheter mitral valve that is safe and effective with the feasibility of clinical surgical procedures. How to anchor the valve firmly and ease of operation is the biggest difficulty in transcatheter atrioventricular valve design. Therefore, a technical solution for stably anchoring the mitral valve prosthesis and facilitating implantation thereof is needed to solve the above-mentioned problems. Disclosure of Invention The invention aims to provide a mitral valve intervention valve fixing operation method, which solves the problem that the mitral valve intervention is difficult to stably anchor at present. In a first aspect, an embodiment of the present invention provides a mitral valve intervention valve fixation operation method, comprising the steps of: a plurality of fixing nails are nailed into the lateral wall of the left atrium above the mitral valve; is connected by connecting wires to a fixation disc located on the atrial septum to form a number of fixation wires over the mitral valve. In some embodiments, the step of stapling a number of staples into the left atrial sidewall above the mitral valve is performed by a stapler. In some embodiments, the method further comprises the step of delivering a delivery sheath to the left atrium. In some embodiments, the method further comprises the step of feeding staples and tackers through the delivery sheath. In some embodiments, the method further comprises the step of expelling a connecting wire connected to the staple from the delivery sheath. In some embodiments, the connection to the fixture plate at the room space by the connection lines specifically includes threading all connection lines through a central mesh of the fixture plate. In some embodiments, all of the connecting wires are threaded into the central mesh of the holding pan, the holding pan is released at the room septum along the connecting wires and delivery sheath, the securing wires are tensioned such that the connecting wires between the staples and the holding pan are tightened, and the connecting wires are knotted at the holding pan using a knotter and sheared using a wire clipper. In some embodiments, the method further comprises the step of retracting the delivery sheath, thereby completing the formation of a plurality of fixation lines above the mitral valve. The fixing method can form a plurality of fixing lines above the mitral valve, the fixing lines can provide stable fixing and supporting functions for the intervention valve implanted below, the problem that the mitral valve is difficult to stably anchor in the prior intervention can be effectively solved, and the operation method for fixing the mitral valve intervention valve is simple and convenient to operate. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. FIG. 1 is a schematic perspective view of a fixture pin of a mitral valve intervention valve fixture according to an embodiment of the present invention; FIG. 2 is a schematic plan view of a nail of a mitral valve intervention valve fixing device according to an embodiment of the present invention; FIG.