Valve repair system implanted into artificial chordae tendineae

Abstract

The invention discloses a valve repair system implanted with an artificial chordae tendineae. The valve repair system comprises a handle operating device, a valve clamping device, a valve puncture device, a catheter and a valve capture feedback device, the valve clamping device comprises a clamping control piece, a near-end chuck and a far-end chuck; the valve puncture device comprises a traction ring, a connecting piece, a puncture needle and a puncture hollow tube, wherein the puncture needle is sleeved with the puncture hollow tube in a limited mode, and the puncture hollow tube is detachably connected with the connecting piece. The traction ring and the connecting piece are contained in the far-end chuck, and the far end of the puncture needle assembly is contained in the near-end chuck. An artificial chordae tendineae is arranged in the clamping control piece in a penetrating manner; the handle operating device comprises a handle, a puncture operating mechanism, a clamping operating mechanism and a feedback operating mechanism, the puncture operating mechanism is connected with the puncture needle assembly, the clamping operating mechanism is connected with the clamping control piece, and the feedback operating mechanism is connected with the valve capturing feedback device. The device is small in puncture injury, implantation and knotting of multiple sets of artificial chordae tendineae are achieved at a time, and the clamping condition is simply and reliably fed back.

Description

technical field [0001] The invention belongs to the technical field of interventional medical devices, and relates to a valve repair system implanted with artificial chordae tendineae. Background technique [0002] Mitral regurgitation is one of the most common heart valve diseases today. The main causes are rheumatic heart disease, mitral valve myxoid degeneration, cardiac ischemic disease, cardiomyopathy, etc. The leaflets, chordae tendineae, and papillary muscles develop lesions that prevent the leaflets of the mitral valve from closing completely. Surgery is an effective method for the treatment of mitral regurgitation, but due to the large trauma to the human body, the elderly patients and patients with more comorbidities have more complications and higher mortality. Therefore, minimally invasive interventional surgery is now the better choice for most heart diseases. The main interventional treatments include artificial chordae tendineae implantation, mitral annulopla...

AI Technical Summary

Problems solved by technology

[0004] For example: there is an existing chorda tendon implantation suturing device that uses a barb-shaped needle to suture a valve perforation. The puncture point of this solution is too large, which causes great damage to the valve, and there is a risk of valve tearing, and the needle is hooked artificially. The success rate of the chordae is not high, which makes the operation success rate not high and prolongs the operation time

And only one set of artificial chords can be implanted at one time, which leads to the need for multiple sutures for each operation, which is complicated and takes a long time

[0005] Another example: another suturing device technology, directly suturing a group of sutures on the valve leaflets through the valve, without winding and knotting, this technology is likely to cause loose sutures, unstable sutures, and cannot obtain satisfactory clinical results, and Only one set of artificial chordae with a suture diameter of ≤0.5mm and ≥0.1mm can be implanted at one time. Multiple operations are required to achieve multiple implants. The operation is complicated and the operation time is long, which cannot meet the clinical needs.

[0006] At the same time, there are also some problems in the clamping process of the existing implanted devices: for example, the valve leaflets are first clamped by the capture device, and then the clamping effect is judged by the capture verification system, and then the artificial chordae are implanted.

However, the device structure of this scheme is complicated, and the optical fiber needs to enter the patient's body with the device body, which increases the risk of surgery

In addition, since the capture verification system needs to be equipped with a capture verification monitor, the device structure is complicated, the production process is complicated, and the production cost and operation cost are high.

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