Delivery sheath

A sheath tube and cutting area technology, applied in the field of delivery sheath tube, can solve the problems of sheath tube rebound or bending, difficulty in maintaining the bending shape, etc., and achieve the effect of good bending compliance and easier expansion.

Active Publication Date: 2021-02-19
东莞市先健医疗有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the large size of the sheath tube, the sheath tube is prone to rebound or bend after pre-shaping, and it is difficult to maintain a good bending shape

Method used

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Embodiment Construction

[0026] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention will be described with examples below in conjunction with the accompanying drawings.

[0027] In the field of interventional medicine, the end close to the operator is defined as the "proximal end", and the end far away from the operator is defined as the "distal end"; for long objects, the direction parallel to its length extension direction is defined as "axial"; for transverse For an object with a circular cross section, define the direction surrounding its axial direction as the "circumferential direction", and the line along the circumferential direction as the "circumferential line"; when the object is bent, define the side with the larger bending radius as the "big curved side" , the side with the smaller bending radius is the "small bend side". The following "cutting" refers to completely cutting off the material in the area to form a thro...

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Abstract

The invention discloses a delivery sheath, which comprises an inner layer, an intermediate layer and an outer layer arranged sequentially from the inside to the outside, the intermediate layer at least includes a first reinforcement section and a A second reinforcement segment connected to the first reinforcement segment, the second reinforcement segment includes a plurality of repeated cutting units, the plurality of cutting units are arranged along the axial direction of the delivery sheath, and the cutting unit includes a first A cutting area and a second cutting area, the projection length of the first cutting area on the cross-section of the second reinforcement section is greater than the projection length of the second cutting area on the cross-section of the second reinforcement section, the first cutting The average axial cut length of the zones is less than the average axial cut length of the second cut zone. After the distal end of the delivery sheath of the present invention is bent toward the first cutting zone and shaped, the bending angle is not easy to rebound and can maintain a good bending shape.

Description

technical field [0001] The invention relates to the field of interventional medicine, in particular to a delivery sheath. Background technique [0002] Surgical treatment of aortic disease is extremely challenging. Although the relevant surgical techniques, anesthesia, and intensive care measures have been significantly improved, thoracotomy may still lead to a relatively high mortality rate and complication rate. Since the 1990s, minimally invasive interventional techniques have been continuously developed in endovascular exclusion. Compared with traditional surgical operations, minimally invasive interventional techniques have the advantages of less trauma, lower complications and lower mortality. However, limited by the shape of the aorta and the perfusion requirements of the upper branch vessels (the upper branch vessels control all the blood supply to the upper limbs, head, and neck), endovascular treatment in the aortic arch area is still relatively forbidden. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/966
CPCA61F2/966A61F2210/0004
Inventor 谢惠雄江巍王刚
Owner 东莞市先健医疗有限公司
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