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Catheter reinforcing layer and catheter

A reinforcement layer and catheter technology, applied in the direction of the catheter, etc., can solve the problems of fracture failure mode, insufficient axial tensile performance of the catheter, etc., and achieve the effects of preventing fracture, optimizing transmission performance, and improving transmission efficiency

Pending Publication Date: 2022-08-09
MICROPORT NEUROTECH SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a catheter reinforcing layer and catheter to solve the failure mode problem of fracture in severe cases due to insufficient axial tensile performance of the existing catheter

Method used

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  • Catheter reinforcing layer and catheter
  • Catheter reinforcing layer and catheter
  • Catheter reinforcing layer and catheter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] see Figures 2a-2c , Figures 2a-2c It is a schematic structural diagram of a conduit reinforcement layer according to an embodiment of the present invention, such as Figures 2a-2c shown, see also figure 1 , the catheter reinforcement layer 100 includes a spring member 110 and an axial member 120 extending from the proximal end to the distal end along the spring member 110 and passing through the spring member 110 as a whole. Specifically, as Figure 2a As shown, the axial member 120a may be attached between the spring member 110 and the inner layer (not shown) in a linear or helical shape from the proximal end to the distal end along the spring member 110 . or, as in Figure 2b As shown, the axial member 120b may be attached between the spring member 110 and the outer layer (not shown) in a linear or helical shape from the proximal end to the distal end. Or, as Figure 2c As shown, the axial members 120c may be staggered between the inner and outer surfaces of t...

Embodiment 2

[0075] see image 3 , image 3 It is a schematic structural diagram of a conduit reinforcement layer according to another embodiment of the present invention, such as image 3 As shown, the catheter reinforcement layer 100 is a combination of the spring member 110 and the axial member 120d, and the axial member 120d can be provided in the gap of the spring member 100 from the proximal end to the distal end along the spring member 100 between, and the axial member 120d and the spring member 110 are in the same plane. compared to Figures 2a-2c The conduit reinforcement layer 100 is shown, image 3 An advantage of the illustrated conduit reinforcement layer 110 is that the outer diameter dimension of the conduit comprising the conduit reinforcement layer is not increased by the presence of the axial member 120 .

[0076] It should be noted that, the axial member 120 provided by the present invention is combined with the spring member 110 as a conduit in a manner that the ent...

Embodiment 3

[0080] see Figure 4 , Figure 4 It is a schematic structural diagram of a conduit reinforcement layer according to another embodiment of the present invention, such as Figure 4 As shown, preferably, the catheter reinforcement layer 100 includes a spring member 110 and a plurality of axial members 120e which are symmetrically arranged throughout the spring member 110 from the proximal end to the distal end along the spring member 110 . Since the axial members 120e are disposed on the surface of the spring member 100 in a symmetrical manner, the structural stability of the catheter including the catheter reinforcement layer can be ensured. When the device is delivered in the body, the axial deformation of the catheter caused by the axial shear stress on the tube body of the catheter is avoided, that is, the axial tensile capacity of the catheter is improved, thereby reducing the elongation rate of the catheter, and finally avoiding the The risk of fatigue failure caused by a...

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Abstract

The invention provides a catheter reinforcing layer and a catheter, and is applied to the technical field of medical instruments. Compared with the reinforcing layer design of a pure spring structure in the prior art, the novel reinforcing layer structure is designed in the catheter, one or more axial components are introduced into the reinforcing layer of the spring structure of an existing catheter, and therefore the axial modulus of the catheter is increased; the problems that the catheter body of the catheter is subjected to axial force, so that the catheter is axially deformed, and the catheter is fractured under serious circumstances are solved.

Description

technical field [0001] The present invention relates to the technical field of medical devices, in particular to a catheter reinforcement layer and a catheter including the catheter reinforcement layer. Background technique [0002] Minimally invasive interventional surgery is supported by digital subtraction angiography (DSA) system, through the intravascular catheter delivery system, with minimal trauma to deliver implanted medical devices or therapeutic drugs to the lesion location for its treatment. Perform mechanical or chemical therapy. As an important part of the delivery system, catheters have been widely used in various minimally invasive interventional treatments. At present, such interventional procedures usually use small blood vessels (such as femoral artery and radial artery) as the entrance, and the catheter is delivered to the target lesion with the help of sheath and guide wire along the blood vessel through the entrance, as other instruments (such as acce...

Claims

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Application Information

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IPC IPC(8): A61M25/00
CPCA61M25/005A61M25/0054A61L29/02A61L29/04A61L29/14A61M2205/02A61M25/0012A61M25/0045A61M25/0053
Inventor 林恒刘云云王亦群罗雪莉
Owner MICROPORT NEUROTECH SHANGHAI
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