CN105615931B - The Minimally Invasive Surgery apparatus of mitral regurgitation is repaired through apex of the heart implantable artificial chordae tendineae - Google Patents

Abstract

A minimally invasive surgical instrument for repairing mitral valve regurgitation by implanting artificial chordae through the apex, including sequentially connected clamps, catheters and flange joints, as well as opening and closing pull rods, locking push rods and puncture guide wires; the clamps are Round head clamps, including movable jaws, fixed jaws and fixed jaw base, the movable jaws are provided with curved guide holes for axial entry and radial exit, and the fixed jaws are provided with radial V-shaped through grooves; puncture The guide wire can pass through the flange joint, the catheter, the fixed jaw seat, the curved guide hole of the movable jaw, the radial V-shaped slot of the fixed jaw, and pass through the radial V-shaped slot of the fixed jaw ; The locking push rod sequentially passes through the flange joint, the conduit, and the fixed clamp seat to reach the radial V-shaped through groove of the fixed clamp. The device of the invention is small in size, compact in structure, simple in operation, greatly shortens operation time, improves operation efficiency and safety, has small operation trauma, is safe and convenient, and can achieve better operation effect.

Description

Transapical implantation of artificial chordae for repairing mitral valve regurgitation with minimally invasive surgical devices

technical field

The invention relates to a medical device, in particular to a minimally invasive surgical device for repairing mitral valve regurgitation by implanting an artificial chord through the apex of the heart.

Background technique

In the repair operation for the treatment of mitral valve regurgitation, the traditional surgery is traumatic and risky, especially for patients with end-stage heart failure and functional mitral valve regurgitation, it is difficult to tolerate surgery, so now it is clinically Minimally invasive procedures to repair mitral regurgitation are in great demand. Most of the existing applied and clinical minimally invasive mitral valve repair technologies exist abroad, and there is no domestic minimally invasive mitral valve repair technology with independent intellectual property rights. foreign technology System, MOBIUS system and DS1000 system are mainstream products, but they all have their own defects. The delivery system of the system has a long distance, needs to puncture the interatrial septum, and takes a long time to capture the mitral valve and is expensive. Although the MOBIUS system is transapical and has a short delivery system, the success rate is low. The negative pressure suction capture system may cause serious damage. blood loss. The DS1000 system also has certain defects because of its high price.

Contents of the invention

The purpose of the present invention is to solve the above problems, and to provide a minimally invasive surgical instrument for repairing mitral valve regurgitation by implanting an artificial chordae tendon through the apex of the heart.

In order to achieve the above object, the present invention adopts the following technical scheme: a minimally invasive surgical instrument for repairing mitral valve regurgitation by implanting an artificial chordae tendon through the apex, including sequentially connected clamps, catheters and flange joints, and opening and closing Pull rod, locking push rod and puncture guide wire; the clamps are round-headed clamps, including movable clamps, fixed clamps and fixed clamp seats, and the movable clamps are equipped with curved guides for axial entry and radial exit The fixed jaw has a radial V-shaped through groove; the puncture guide wire can pass through the flange joint, the catheter, the fixed jaw seat, the curved guide hole of the movable jaw, and the radial V of the fixed jaw. and pass through the radial V-shaped groove of the fixed jaw; the locking push rod sequentially passes through the flange joint, the conduit, and the fixed jaw seat to reach the radial V-shaped groove of the fixed jaw.

The inner surfaces of the movable clamp and the fixed clamp are respectively provided with atraumatic rows of teeth.

Compared with the prior art, the present invention has the following obvious effects: the structural design is reasonable, it enters the left ventricle through the apex of the heart, and the friction with the mitral valve leaflets can be increased through the non-invasive tooth arrangement on the clamping surface, so as to effectively capture and guide the puncture. The wire and the artificial chord are bent through the curved guide hole inside the movable clamp and pass through the mitral valve leaflet for chord reconstruction. The operation is convenient, safe and reliable, and the cost is correspondingly reduced.

Description of drawings

Fig. 1 is the overall structural representation of the present invention;

Fig. 2 is the sectional structure schematic diagram of the present invention;

Fig. 3 is a schematic diagram of a partial three-dimensional structure of the present invention (when the clamp is opened).

detailed description

Referring to Fig. 1, refer to Fig. 2 and Fig. 3 for cooperation, the microplaning surgical instrument for repairing mitral valve regurgitation by implanting artificial chordae through the apex of the heart of the present invention includes sequentially connected clamps 1, catheter 2 and flange joint 3, And opening and closing pull bar 4, locking push rod 5 and puncture guide wire 6. The clamp 1 is a round-headed clamp, which includes a movable jaw 11, a fixed jaw 12 and a fixed jaw seat 13, wherein the movable jaw is provided with a curved guide hole 14 that goes in and out in the axial direction, and the fixed jaw There are radial V-shaped through grooves 15. The puncture guide wire 6 can sequentially pass through the flange joint, the catheter, the fixed jaw seat, the curved guide hole of the movable jaw, the radial V-shaped through groove of the fixed jaw, and pass through the radial V-shaped through groove of the fixed jaw. Passing out; the locking push rod 5 sequentially passes through the flange joint, the conduit, and the fixed clamp seat to reach the radial V-shaped through groove of the fixed clamp. Atraumatic rows of teeth 16 are respectively provided on the inner surfaces of the movable jaws and the fixed jaws.

The flange joint 3 in the present invention can be switched to handles of general surgical instruments.

The front end of the opening and closing pull rod 4 is fixedly connected with the connecting pin 7 , and the connecting pin 7 is located in the chute 8 .

The present invention can switch through the handle of the general surgical instrument through the flange joint 3; the handle has two functions:

1. Control the opening and closing rod 4 to realize the opening and closing of the instrument;

2. Control the locking push rod 5 to capture and lock the 6 of the puncture guide wire.

There is a curved guide hole 14 on the upper part of the movable clamp 11, which communicates with the shell 2 and the flange joint 3; the puncture guide wire 6 guides the artificial tendon to pass through the flange joint 3 and passes through the curved guide hole 14 to reach the movable clamp. 11 and the clamping surface of the fixed clamp 12, so as to pass through the mitral valve leaflet vertically.

The front end of the fixed clamp 12 is provided with a radial V-shaped through groove 15, and the puncture guide wire 6 passing through the mitral valve leaflet can be caught and locked by pushing the locking push rod 5.

The atraumatic row of teeth 16 in the present invention will not cause trauma to the mitral valve tissue when capturing the mitral valve leaflets, and makes the smooth mitral valve leaflets easier to capture.

The present invention can be installed with a limit seat when the handle of the follow-up general surgical instrument is transferred, and the instrument will not be damaged when the instrument is pulled.

Claims (2)

1. a kind of Minimally Invasive Surgery apparatus that mitral regurgitation is repaired through apex of the heart implantable artificial chordae tendineae, including sequentially connected clamp, Conduit and bump joint, and folding pull bar, locking push rod and puncture seal wire；Characterized in that, the clamp is round end clamp, Including active clamp, fixed clamp and grips pincers holder, active clamp is provided with the curved guide hole axially entered, radially gone out, fixed Clamp is provided with radial direction V-type groove；The seal wire that punctures can pass through bump joint, conduit, grips pincers holders, active clamp Curved guide hole, the radial direction V-type groove of fixed clamp simultaneously pass from the radial direction V-type groove of fixed clamp：The locking push rod is suitable Sequence reaches the radial direction V-type groove of fixed clamp through bump joint, conduit, grips pincers holder.

2. the Minimally Invasive Surgery apparatus according to claim 1 that mitral regurgitation is repaired through apex of the heart implantable artificial chordae tendineae, it is special Sign is that the medial surface of the active clamp and fixed clamp is respectively equipped with hurtless measure toothrow.