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Valve-adjustable catheter sheath

A catheter and valve-adjusting technology, applied in the direction of catheters, etc., can solve the problem of unsatisfactory actual effect, and achieve the effect of good sealing and pushing performance and good hemostasis performance.

Active Publication Date: 2015-07-29
APT MEDICAL HUNAN INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The actual effect of the existing structure is not very ideal

Method used

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  • Valve-adjustable catheter sheath
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  • Valve-adjustable catheter sheath

Examples

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Embodiment Construction

[0029] The invention discloses a catheter sheath with an adjustable valve, which can control the opening size of a hemostatic valve in a joint, thereby realizing excellent hemostatic performance, good sealing and pushing performance.

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] see Figure 1-Figure 9 ,one of them figure 1 Schematic diagram of the structure of the catheter sheath with adjustable valve provided by the embodiment of the present invention; figure 2 It is a schematic diagram of th...

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Abstract

The invention discloses a valve-adjustable catheter sheath. The valve-adjustable catheter sheath mainly consists of a sheath tube and a dilator, wherein a fastener, a first hemostatic valve, a second hemostatic valve and a gland cap are arranged at a near-end connector of the sheath tube; through slot matching of the fastener and the gland cap, the compression amount of the second hemostatic valve is controlled so as to change the size of an opening and achieve good sealing and pushing performance; the hemostatic valve adopts a double-sheet structure, when a catheter or an instrument passes through, a second hemostatic valve ensures hemostatic performance, and the catheter or the instrument withdraws, the first hemostatic valve ensures that blood does not lose; the matching of the gland cap and the fastener can control the size of the opening of the second hemostatic valve, so that when the catheters or the instruments with different pipe diameter specifications pass through, good sealing performance can be ensured, the resistance is very small, and very good operating hand feel is ensured; the first hemostatic valve and the second hemostatic valve are made of materials with different hardness and elasticity; the first hemostatic valve has relatively large elasticity modulus, the second hemostatic valve is relatively soft, and the size of the opening of the second hemostatic valve can be effectively controlled in a compressed state.

Description

technical field [0001] The invention relates to an adjustable valve catheter sheath, which is used in interventional diagnosis and treatment operations, in particular to an auxiliary device for cardiac catheterization or coronary artery balloon angioplasty or other peripheral vascular interventional diagnosis and treatment. Background technique [0002] As an auxiliary guiding device for arteriovenous interventional surgery, the introducer sheath plays an important role in interventional therapy. The introducer sheath uses the vascular puncture technique to guide the introducer sheath to expand the skin and muscle tissue into the lumen of the epidermal blood vessel by using the puncture guide wire, and then remove the puncture guide wire and the dilation tube assembly, so that the distal end of the introducer sheath is placed in the blood vessel, thus establishing a system consisting of The passage from the outside of the body to the lumen of the blood vessel can be used for...

Claims

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Application Information

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IPC IPC(8): A61M25/00
Inventor 刘慕竹
Owner APT MEDICAL HUNAN INC
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