Interventional left auricle ligator and ligation system with same
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A snare and connecting tube technology, applied in the field of medical devices, can solve the problems of unsatisfactory clinical effects and achieve high surgical safety and simple and convenient operation
Pending Publication Date: 2021-04-30
麦迪领先医疗科技(深圳)有限公司
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[0004] The current clinical treatment methods include: oral anticoagulant drugs, radiofrequency ablation, percutaneous interventional left atrial appendage closure and surgical left atrial appendage resection, etc., no matter which method, the clinical effect is not very satisfactory
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Embodiment 1
[0029] Such as figure 1 , 2 , 3, the interventional left atrial appendage ligator of this embodiment includes a connecting tube 1, a snare 2 and sutures 3, the snare 2 is a flexible ring with built-in dual channels, and is connected to one end of the connecting tube 1 , the inner side of the snare 2 corresponding to the position of one of the above-mentioned channels has a slit connecting the channel, and a deformable skeleton ring 21 is embedded in the other channel of the above-mentioned snare 2, and the above-mentioned suture 3 passes through The two ends of the above-mentioned connecting pipe 1, and a one-way knot 31 is tied between one end and its body to form a shrinkable ligature coil 32, and the above-mentioned ligature coil 32 is embedded in the corresponding channel from the above-mentioned slit, The other end of the above-mentioned suture 3 can be pulled outward relative to the other end of the above-mentioned connecting tube 1 under the action of external force, s...
Embodiment 2
[0043] Such as Figure 5 As shown, the interventional left atrial appendage ligation system of this embodiment includes a delivery sheath 5 , a wire cutter 6 , grasping forceps 7 and the interventional left atrial appendage ligation device in Embodiment 1.
[0044] In this embodiment, the thread cutter 6 is the prior art, and a 6F intracardiac thread cutter can be used.
[0045] The above-mentioned grasping forceps 7 are also prior art, and medical forceps of biopsy forceps type can be used.
[0046] The above-mentioned delivery sheath 5 adopts a 14F delivery sheath.
[0047] The implementation process is as follows:
[0048] Step 1. Guide the 14F delivery sheath into the femoral vein, puncture through the atrial septum into the left atrium, and point to the left atrial appendage;
[0049] Step 2. The interventional left atrial appendage ligation device is sent to the opening of the left atrial appendage through the delivery sheath, and the front end ferrule is automaticall...
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Abstract
The invention relates to the technical field of medical instruments, in particular to an interventional left auricle ligator and a ligation system with the interventional left auricle ligator. The interventional left auricle ligator comprises a connecting pipe, a snare and a suture, the snare is a flexible ring with two built-in channels and is connected to a pipe opening in one end of the connecting pipe, an open seam connected with one channel is formed in the position, corresponding to the channel, of the inner side of the snare, and a deformable skeleton ring is embedded in the other channel of the snare. The suture penetrates through the two ends of the connecting pipe, a one-way knot is tied between the end of one end of the suture and the body of the connecting pipe to form a retractable ligature coil, the ligature coil is embedded in the corresponding channel from the open seam, the other end of the suture can be pulled outwards relative to the other end of the connecting pipe under the action of external force, and therefore the ligature coil is pulled out from the open seam and contracts. The interventional left auricle ligator has the advantages of being reasonable in structural design and capable of effectively conducting intracardiac ligature operation on a left auricle through percutaneous intervention.
Description
technical field [0001] The invention relates to the technical field of medical devices, in particular to an interventional left atrial appendage ligator and a ligating system having the same. Background technique [0002] The left atrial appendage is a long and narrow tubular blind cavity with irregular shape and multiple twists and turns, about the size of a thumb, with an opening ranging from 10mm to 40mm. There are abundant comb muscles and muscle trabeculae in the left atrial appendage, so the blood flow in the left atrial appendage is prone to eddy currents and slowed down, and it is a predisposed site for thrombus formation. [0003] Patients with atrial fibrillation (AF) have a significantly increased risk of stroke. Studies have shown that 60% of rheumatic heart disease patients with atrial fibrillation (hereinafter referred to as atrial fibrillation) have cardiogenic thrombus from the left atrial appendage (LAA), and 91% of strokes caused by non-valvular atrial fib...
Claims
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