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Novel thrombus-taking stent and thrombus taking device comprising thrombus-taking stent

A new type of stent rod technology, applied in the field of medical devices, can solve the problems of easy thrombus falling off and insufficient radial support force of thrombus, and achieve the effect of improving flexibility and adherence, which is beneficial to surgical operation and judgment, and has good effect.

Pending Publication Date: 2020-07-03
苏州博欣医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a thrombus retrieval bracket. Through the design of a plurality of spherical unit structures in the bracket, the lack of radial support force when catching thrombus in the prior art is solved, and the thrombus is easy to fall off when the bracket body is withdrawn. question

Method used

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  • Novel thrombus-taking stent and thrombus taking device comprising thrombus-taking stent
  • Novel thrombus-taking stent and thrombus taking device comprising thrombus-taking stent
  • Novel thrombus-taking stent and thrombus taking device comprising thrombus-taking stent

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Embodiment 1

[0029] The invention provides a thrombectomy bracket, Figure 1 to Figure 3 An implementation example is given, including a self-expanding stent body 100 along its longitudinal axis and circumferential direction. The stent body 100 includes a distal region 101, a stent spherical unit 103, a stent unit node 104, a developing structure 105 and a push wire connected in sequence. 107 connected to the proximal region 102, the entire stent body 100 is an effective working section.

[0030] In this example, see image 3 , there are visualization structures 105 in the distal region 101 of the stent, the spherical unit nodes 104 and the proximal region 102 of the stent.

[0031] After the stent body 100 reaches the lesion site, the stent body 100 is pushed out from the microcatheter 200, and the stent rod 106 with the largest circumferential diameter and strong radial support force can quickly anchor the blood vessel wall and embed the thrombus, increasing the chance of thrombus captu...

Embodiment 2

[0035] Figure 4 Embodiment 2 is shown, in which components identical or corresponding to those in Embodiment 1 are identified with reference numerals corresponding to Embodiment 1. For simplicity, only the differences between Embodiment 2 and Embodiment 1 are described. The difference is that the imaging structure 105 is fixed on the distal end 101 of the stent, the spherical unit node 104 of the stent and the proximal end 102 of the stent in the first embodiment, and is fixed on the distal end 101 of the stent, the stent by winding. The rod 106, the stent spherical element node 104 and the wire on the proximal end 102 of the stent.

[0036] The thickness or diameter of the imaging structure is 0.02-0.15 mm, preferably 0.03-0.1 mm. This thickness setting can not only ensure that the diameter and length of the blood vessel and thrombus are clearly marked when removing the thrombus, but also save the cost of making the imaging structure to the greatest extent. Through the ray...

Embodiment 3

[0038]The present invention also provides a thrombus removal device, including the thrombus removal bracket described in any of the above embodiments, the push wire 107 is sheathed with a microcatheter 200 that can press the thrombus retrieval bracket into the interior, and the microcatheter 200 passes through the microcatheter The catheter connector is connected to the introduction sheath, and the stent body 100 is connected to the push wire 107 through physical winding, physical extrusion, medical adhesive, laser welding, polymer material fusion welding and the like. There are imaging structures distributed on the stent body 100 for real-time observation of whether the thrombus has fallen off during the capture and withdrawal process during thrombus removal, so as to guide the specific microscopic operation of thrombus removal and make thrombus removal more accurate. For the structure and working principle of the thrombectomy bracket, refer to the above-mentioned embodiments,...

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Abstract

The invention relates to the field of medical devices, in particular to a novel thrombus-taking stent and a thrombus taking device comprising the thrombus-taking stent. The novel thrombus-taking stentincludes a stent body which has circumferential self-expansion along the longitudinal axis of the stent, wherein the stent body comprises a plurality of spherical stent units, the stent rods of eachspherical stent unit have high radial support force, and a three-dimensional structure is formed by each spherical stent unit node and the corresponding stent rods; the stent rods can be quickly embedded in thrombi, and a blood vessel is anchored by the stent rods, so that the stability of thrombus capture is increased, and the possibility of thrombus slip is reduced; and an image developing material which is made from a material without perspective of rays is arranged from the distal end of the stent to the proximal end of the stent, runs through the entire stent, and runs through the range which includes both ends of the stent, space among the spherical stent units and the stent rods, and the effective length of the thrombus-taking stent can be marked accurately. Through the thrombus-taking stent which are formed through connection of a plurality of spherical units, the invalid working length of the stent can be reduced, the flexibility and adherence of the stent body can be improvedeffectively, and the operation convenience of a doctor can be improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a thrombus retrieval bracket and a thrombus extraction device with the thrombus retrieval bracket. Background technique [0002] Stroke, also known as apoplexy, is a group of acute cerebrovascular diseases with cerebral ischemia and hemorrhagic injury symptoms as the main clinical manifestations, because of its high morbidity, high mortality, high disability rate, high recurrence rate and High economic burden and other characteristics seriously endanger the life, health and quality of life of the public. At present, the incidence of stroke in my country is increasing at an annual rate of 8.7%. The number of deaths due to stroke in my country has surpassed tumors and cardiovascular diseases every year, becoming the first cause of death. [0003] Stroke is divided into two types: ischemic stroke and hemorrhagic stroke, of which ischemic stroke accounts for 70% to 80%. In p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B17/22
CPCA61B17/22A61B2017/22038A61B2017/22094
Inventor 王大伟
Owner 苏州博欣医疗科技有限公司
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