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Shape memory catheter

A catheter and memory technology, applied in the direction of catheters, etc., can solve the problems of patient discomfort, high hardness, mismatched catheter diameters, etc., and achieve the effect of reducing discomfort

Active Publication Date: 2021-06-18
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem solved by the present invention is at least one of the technical problems that the existing urinary catheter does not match the diameter of the patient's urethra and the hardness is high, and the patient is uncomfortable when it is put in and taken out.

Method used

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Embodiment approach

[0058] The first implementation mode:

[0059] Such as figure 2 as shown, figure 2 It is the structure diagram of the initial shape of the urinary catheter support 2; the support portion 22 of the initial shape is a cylinder with both ends through, the head of the cylinder is arc-shaped, and the tail is connected through the connection portion 21; the support portion in this embodiment 22 and the connecting portion 21 are three-dimensional mesh structures, so the supporting portion 22 also includes fixing pieces 221, and a plurality of fixing pieces 221 are fixed to the three-dimensional mesh structures intersecting with each other to prevent the bladder from being scratched. The fixing part 221 is also made of two-way memory composite material. When the multiple fixing parts 221 are in the initial shape, they are close to each other and are in a folded state, which is convenient to put into the urethra. At the same time, as figure 1 as shown, figure 1 It is the initial s...

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Abstract

The invention provides a shape memory catheter, and particularly relates to the field of medical instruments. The shape memory catheter comprises a catheter body, wherein a drainage cavity is formed in the catheter body; the catheter body comprises a bidirectional shape memory composite material, and the catheter body further comprises an initial shape and a temporary shape; when the catheter body is stimulated by temperature, the catheter body deforms from the initial shape to the temporary shape, a part of the structure of the catheter body in the temporary shape is suitable for being fixed in the bladder and guiding urine out through the drainage cavity, and after the catheter body in the temporary shape is stimulated by the temperature again, the temporary shape is recovered to the initial shape. When the shape memory catheter is placed in the body of a patient, the discomfort of the patient is reduced, and when the shape memory catheter is used, catheterization can be carried out only through temperature stimulation; and when the shape memory catheter is taken out, temperature stimulation is carried out again.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a shape-memory urinary catheter. Background technique [0002] Generally, in the case of surgery, when the patient is unconscious, unable to urinate spontaneously, or encounters dysuria, prostatic hypertrophy, or urethral damage, a catheter needs to be inserted. Existing urinary catheters mainly have different models (different sizes), but it is inconvenient for hospitals to purchase them. Generally, only one model is purchased to adapt to as many patients as possible. Since the diameter of the urinary catheter generally does not match the diameter of the patient's urethra, and the hardness of the catheter is relatively high, it will cause discomfort to the patient when it is put into the patient's urethra, and the patient is also very uncomfortable when it is taken out. Contents of the invention [0003] The problem solved by the invention is at least one of the t...

Claims

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Application Information

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IPC IPC(8): A61M25/00
CPCA61M25/0017A61M25/0041A61M25/0074
Inventor 冷劲松张风华李悦嘉刘彦菊
Owner HARBIN INST OF TECH
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