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Thrombus taking device

A technology of embolism device and element, applied in the field of embolectomy device, can solve the problems of inability to enter cerebral arteries, rupture of blood vessels, long embolectomy time, etc., and achieve the effect of expanding the scope of application

Pending Publication Date: 2017-07-21
SHANGHAI HEARTCARE MEDICAL TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing thrombus retrievers are mainly aimed at thicker blood vessels and cannot access thinner cerebral arteries
And if the thrombectomy stent itself is improperly designed, it is easy to cause irreversible damage to the blood vessel, resulting in restenosis, vascular rupture and other complications; in addition, it is easy to cause the thrombus to fall off during the thrombus grasping process, which is time-consuming and has a low rate of vascular recanalization
If it takes a long time, it will lead to too long ischemic time and easy to cause irreversible damage to the brain
Poor visualization of the thrombectomy stent will also lead to problems such as excessive thrombectomy time, thrombus shedding, and poor thrombolytic effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] figure 1 A specific embodiment of the thrombus retriever related to the present invention is shown. In this embodiment, the thrombus remover includes a thrombectomy bracket 1 , a developing ring 2 , a push rod 3 and an introduction sheath 4 . The proximal end of the thrombus removal bracket 1 is connected to the distal end of the push rod 3, and a developing ring 2 (belonging to the first type of developing elements 21) is arranged at the connection. The push rod 3 is connected with the introduction sheath 4 . The distal end of the thrombectomy support 1 is provided with a developing element 21 . Both the distal end and the proximal end of the thrombectomy support 1 are open.

[0088] figure 1 The A-A cross-section such as figure 2 As shown, it can be seen that the cross section of the thrombectomy support 1 is an open ring. combine figure 1 It can be seen that the bolt removal bracket 1 is in the shape of a roll. Adjusting the degree of curling of the thrombec...

Embodiment 2

[0090] In this embodiment, the distal end and the proximal end of the thrombectomy bracket 1 are provided with developing elements 21, such as Figure 4 shown. There are three developing elements 21 at the distal end, which are evenly distributed on the circumference of the drum-shaped structure of the thrombus retrieval support 1 . In the present invention, evenly distributed on the circumference of the drum-shaped structure of the thrombus retrieval bracket 1 means that the distance between two of them on the circumference is the same or similar. There are one or more developing elements 21 located at the proximal end, and when there are more than one, they are evenly distributed on the circumference of the drum-shaped structure of the thrombus retrieval support 1 . The number of developing elements 21 located at the distal and proximal ends is not limited to Figure 4 As shown, there can be one or more.

Embodiment 3

[0092] In this embodiment, the distal, middle and proximal ends of the thrombectomy bracket 1 are all provided with developing elements 21, such as Figure 5 shown. There are three developing elements 21 at the distal end, which are evenly distributed on the circumference of the drum-shaped structure of the thrombus retrieval support 1 . There are one or more developing elements 21 located in the middle section, and when there are more than one, they are evenly distributed on the circumference of the drum-shaped structure of the thrombus removing support 1 . There are one or more developing elements 21 located at the proximal end, and when there are more than one, they are evenly distributed on the circumference of the drum-shaped structure of the thrombus retrieval support 1 . The number of developing elements 21 located at the distal, middle and proximal ends is not limited to Figure 5 As shown, there can be one or more.

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Abstract

The invention discloses a thrombus taking device. The thrombus taking device comprises a thrombus taking support, and developing elements are arranged on the thrombus taking support. Preferably, the developing elements are arranged at the far end, the middle section and the near end of the thrombus taking support. The developing elements are linear or annular or netty or in point shapes, and the arrangement modes of the developing elements include one or more modes that developing materials are sprayed and painted to the thrombus taking support, and the developing elements are installed on the thrombus taking support in a winding or buckling or punching or welding or splicing mode. The developing elements are evenly distributed on the thrombus taking support, and particularly are evenly distributed around the circumference of the thrombus taking support, the expanding state during thrombus taking and the specific position of the support can be accurately displayed accordingly, the fusion condition of the support and the blood vessel is judged, judgment of a doctor and operating of surgery are convenient, and operation time is shortened.

Description

technical field [0001] The invention belongs to the field of medical instruments, in particular to a thrombus retriever. Background technique [0002] Stroke is currently one of the common diseases in the world, and its characteristics are: high incidence rate, high prevalence rate, and high disability rate. The annual incidence of cerebrovascular disease in my country's urban areas is 219 / 100,000, and that in rural areas is 185 / 100,000, and it is still increasing year by year. From 1998 to 2008, the prevalence of cerebrovascular disease increased from 5.9‰ to 9.7‰. Among the surviving patients with cerebrovascular disease, about three-quarters of them are disabled in different degrees. It is reported that 80% of stroke patients have different degrees of limb dysfunction, and 43.7% of them cannot take care of themselves. Intravenous rt-PA thrombolysis is currently the only effective treatment for acute cerebral infarction proven by evidence-based medicine. However, the tr...

Claims

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Application Information

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IPC IPC(8): A61B17/221
CPCA61B17/22031A61B17/221A61B2017/2215A61B2017/00778A61B2017/00831A61B2017/22035
Inventor 王国辉吴建平王震周尔辰薛宗玉
Owner SHANGHAI HEARTCARE MEDICAL TECH CORP LTD
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