Novel great vascular stent delivery system

A large blood vessel and core tube technology, applied in the field of large blood vessel stent delivery system, can solve the problems of poor flexibility at the distal end of the delivery system, not suitable for Asian population, large system diameter, etc., and achieve compact structure, reduced wall thickness, and friction coefficient low effect

Active Publication Date: 2011-05-04
北京有卓正联医疗科技有限公司
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Problems solved by technology

However, these delivery systems are complex in structure, cumbersome in operation, poor in flexibility at the distal end of th

Method used

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  • Novel great vascular stent delivery system
  • Novel great vascular stent delivery system
  • Novel great vascular stent delivery system

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Embodiment Construction

[0039] The present invention provides a large blood vessel stent delivery system. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0040] like figure 1 As shown, the relaxation system is composed of a positioning guide head 2, a rear release mechanism 3, a core tube 4, a middle tube 5, an outer sheath tube 6, a large handle 7, a small handle 11 and a push rod 13 from front to back.

[0041] Among them, such as figure 2 As shown in Figure 3, the rear release mechanism 2 is composed of a pin seat 17 with a central through hole and a five-pointed star connector 18, and the front end of the pin seat 17 is connected with the positioning guide head 2 by threads; the five-pointed star connector 18 uniformly distribute 5 pin holes along the circumferential direction, and 5 pins 19 corresponding to the pin holes are evenly fixed along the circumferential direction on the pin seat 17; Composed of thin spri...

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Abstract

The invention belongs to the field of medical devices, and in particular to a great vascular stent delivery system capable of realizing a front-end back release function. The great vascular stent delivery system is composed of a locating guide head, a back release mechanism, a core tube, a middle tube, a sheath tube, a big handle, a small handle and a push rod which are sequentially arranged fromfront to back. The whole system has the advantage of simple mechanism, is convenient in operation and safe in use and is capable of effectively avoiding the phenomena of release in advance and failure in release; and meanwhile the stainless steel core tube is locally engraved into a spring, thus achieving the purposes of reducing core tube diameter and system size, greatly improving flexibility of the far end of the system, and reducing vascular injury caused by the system during the delivery process.

Description

technical field [0001] The invention belongs to the field of medical devices, and in particular relates to a large blood vessel stent delivery system capable of realizing the front-end rear release function. Background technique [0002] Aortic disease, especially aortic aneurysm, is a serious cardiovascular emergency that threatens the life of patients and has a high fatality rate. According to statistics, the 5-year mortality rate of untreated patients is 50% to 76%, while the mortality rate of patients with cardiopulmonary diseases is as high as 93%. Before the 1990s, surgery was the main method for the treatment of aortic disease, but this surgical method has large trauma, long operation time, many complications, and high mortality rate. The incidence of paraplegia was 4.6%. In recent years, with the development of minimally invasive interventional therapy technology, endovascular stent isolation has been widely used in the treatment of aortic diseases. This surgical m...

Claims

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Application Information

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IPC IPC(8): A61F2/84A61F2/962
Inventor 于学保许尚栋缪卫东朱明冯景苏扈玉玲李君涛
Owner 北京有卓正联医疗科技有限公司
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