CN103251464A - Adjustable bicuspid valve forming device - Google Patents

Abstract

The invention relates to an adjustable mitral valve forming device, which includes a ring body, a right metal wire and a left metal wire. The ring body is formed by connecting two ends of a flexible tube after being bent. The right end and the left end, two holes are opened in the middle of the ring body, which are respectively connected to the left conduit and the right conduit, and one end of the left metal wire is fixed on the inner wall of the left end, and the other end passes through the connection between the two ends of the ring body and penetrates into the right end from the The right conduit passes through, one end of the right metal wire is fixed on the inner wall of the right end, the other end passes through the junction of the two ends of the ring body, the left end passes through the left conduit, and the left end is inserted into the right end or the right end is inserted into the left end. There are barb-shaped teeth on the opposite side of the junction of the left and right ends. The present invention does not require another thoracotomy, and only needs to adjust the inner diameter of the forming ring by adjusting the handle to obtain the expected effect, which can not only reduce the patient's physical and mental pain and economic burden, but also avoid the complications and mortality of the second operation .

Description

An adjustable mitral valve forming device

technical field

The invention belongs to the technical field of heart valve medical devices, in particular to an adjustable mitral valve shaping device.

Background technique

Mitral regurgitation (MR) is one of the most common heart diseases. Mitral valve plasty (MVP) is the preferred surgical treatment for MR, and the use of mitral valve plasty ring during the operation can significantly improve the success rate and durability of MVP. However, residual and/or recurrent MR after MVP has always been a clinical problem for cardiac surgeons. It is often necessary to perform valvuloplasty or valve replacement again, which not only increases the economic burden, but also causes greater pain to the patient, and the risk of the second operation is significantly higher than that of the first operation. Past experience has shown that the main cause of residual MR is the inappropriate selection of the mitral annuloplasty ring size, often due to the size being too large and resulting in insufficient leaflet coaptation area.

Contents of the invention

The technical problem to be solved by the present invention is to provide an adjustable mitral annuloplasty device, in which two metal wires interlocking are built into the traditional forming ring, and the two metal wires can move relative to each other in one direction, so that The inner diameter of the forming ring becomes smaller.

The technical solution adopted by the present invention to solve the technical problem is to provide an adjustable mitral annuloplasty device, including an annulus, a right wire and a left wire, and the two ends of the annulus are bent by a flexible tube The connecting part of the ring body is divided into right end and left end. Two holes are opened in the middle of the ring body to connect the left conduit and the right conduit respectively. One end of the left metal wire is fixed on the inner wall of the left end, and the other end is passed through Pass through the joints at both ends of the ring body and enter the right end to pass out from the right conduit. One end of the right metal wire is fixed on the inner wall of the right end, and the other end passes through the joints at both ends of the ring body and enters the left end to pass out from the left conduit. The left end is inserted into the right end or the right end is inserted into the left end. There are barb-shaped teeth on the opposite surface of the connection between the left end and the right end. guide wire.

The left guide tube and the right guide tube are integral with the ring body.

The left catheter, the right catheter and the ring body are made of polymer materials.

Beneficial effect

The advantage of the present invention is that the metal wire is connected with the guide wire, passes through the interatrial septum, and then leads out of the skin through the femoral vein or the jugular vein, and the outer end is connected with an adjustment handle. After the operation, evaluate the effect of MVP by transesophageal ultrasound. If the forming effect is not satisfactory, the size of the forming ring is too large. There is no need for another thoracotomy, and the expected effect can be obtained by adjusting the inner diameter of the forming ring only by adjusting the handle. Through this method, the patient's physical and mental pain and economic burden can be reduced, and the complications and mortality of the second operation can be avoided.

Description of drawings

Fig. 1 is a schematic diagram of the structure of the present invention.

Fig. 2 is a partially enlarged schematic diagram of the part where the left wire or the right wire is connected to the guide wire in the present invention.

Fig. 3 is a schematic diagram of the present invention entering the heart from the root artery of the right leg of a human body.

Fig. 4 is a schematic diagram of connecting the left wire or the right wire puller according to the present invention.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the present invention. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

As shown in Figures 1 and 2, an adjustable mitral valve forming device includes a ring body, a right wire 1 and a left wire 2, the ring body is formed by connecting two ends of a flexible tube after bending, The connecting part of the ring body is divided into a right end 3 and a left end 4. There are 2 holes in the middle of the ring body to connect the left conduit 6 and the right conduit 7 respectively. One end of the left metal wire 2 is fixed on the inner wall of the left end 4, and the other is One end passes through the joints at both ends of the ring body and penetrates into the right end 3 and exits from the right conduit 7. One end of the right metal wire 1 is fixed on the inner wall of the right end 3, and the other end passes through the joints at both ends of the ring body and penetrates into the left end 4. The left conduit 6 passes through, the left end 4 is inserted into the right end 3 or the right end 3 is inserted into the left end 4, the opposite surface of the junction of the left end 4 and the right end 3 has barb-shaped teeth, and the right wire 1 And the left wire 2 passes through the left catheter 6 and the right catheter 7 respectively and connects with the guide wire 8 respectively.

The left conduit 6 and the right conduit 7 are integral with the ring body.

The left conduit 6, the right conduit 7 and the ring body are made of polymer material.

Claims (3)

1. An adjustable mitral annuloplasty device, comprising an annulus, a right wire (1) and a left wire (2), characterized in that the annulus is connected at both ends by a flexible tube bent The connecting part of the ring body is divided into a right end (3) and a left end (4), and there are two holes in the middle of the ring body, respectively connecting the left conduit (6) and the right conduit (7), and the left metal wire ( 2) One end is fixed on the inner wall of the left end (4), the other end passes through the junction of both ends of the ring body and penetrates into the right end (3) and passes out from the right conduit (7), and one end of the right metal wire (1) is fixed on the right end On the inner wall of (3), the other end passes through the connection between the two ends of the ring body, and the left end (4) passes through the left conduit (6), and the left end (4) is inserted into the right end (3) or the right end (3) into the left end (4), the opposite surface of the connection between the left end (4) and the right end (3) has barb-shaped teeth, and the right wire (1) and the left wire (2) pass through respectively The guide wires (8) are respectively connected behind the left catheter (6) and the right catheter (7). 2. An adjustable mitral annuloplasty device according to claim 1, characterized in that the left catheter (6) and the right catheter (7) are integral with the ring body. 3 . The adjustable mitral annuloplasty device according to claim 1 , characterized in that, the left catheter ( 6 ), the right catheter ( 7 ) and the ring body are made of polymer materials. 4 .

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