CN216456452U

CN216456452U - Urethral catheter

Info

Publication number: CN216456452U
Application number: CN202122966233.5U
Authority: CN
Inventors: 张凤卿
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-05-10
Anticipated expiration: 2031-11-30

Abstract

The utility model provides a catheter which comprises a catheter body made of silica gel or latex, wherein a supporting and filling part is axially arranged in the catheter wall of the catheter body, the supporting and filling part is of a bead structure capable of being bent freely, a plurality of beads are sequentially arranged, and a connecting line of the beads is connected in series, the hardness of the beads is higher than that of the catheter body, and the connecting line is flexible and bendable. The urethral catheter is provided with the supporting filling member of the bead string structure which can be freely bent, so that the urethral catheter has the characteristics of good flexibility and bending property of the latex or silica gel urethral catheter, can provide support in the axial direction and the radial direction of the urethral catheter simultaneously, enhances the strength and the hardness of the urethral catheter, solves the problem that the stretch extrusion deformation of the urethral catheter influences the smoothness of a pipeline, can effectively increase the inner diameter size, and improves the urethral catheterization efficiency.

Description

Urethral catheter

Technical Field

The utility model belongs to the field of medical instruments, and particularly relates to a catheter.

Background

The common material of the catheter in the medical industry at present is latex or silica gel, and the soft material is in clinical use, so that the catheter is easy to stretch and deform, is difficult to insert and extract, is easy to extrude and deform in vivo, and causes the problem of blockage of a pipeline and influence on the discharge of urine.

In order to solve the problems of soft material and easy tensile deformation of the catheter, which lead to difficult insertion and extraction, a structure of embedding the guide wire into the wall of the catheter is adopted at present, the insertion of the hard guide wire provides the change of the hardness and the strength of the catheter in the axial direction, and the problem of difficult insertion and extraction caused by tensile deformation is solved, but no radial support is provided, so that the problem of pipeline blockage caused by extrusion deformation of the catheter in the body can not be solved, especially, in order to avoid influencing the characteristic of easy bending of the catheter, the guide wire is easy to flatten under the condition of thinner arrangement, and if the guide wire is too thick, the flexibility and good bending performance of the catheter can be influenced although the guide wire is not easy to flatten.

Another way to solve the above-mentioned problems with such catheters is to increase the wall thickness to increase the strength and stiffness of the catheter, but this results in a smaller inner diameter of the catheter and a lower efficiency of the catheter.

SUMMERY OF THE UTILITY MODEL

In view of the above, in order to solve the above problems, the present invention provides a urinary catheter embedded with a supporting filler member having a bead structure capable of being bent freely. The catheter both has kept the characteristics of good pliability of latex or silica gel catheter, bendability, can also provide simultaneously and radially support at catheter axial and footpath, strengthens the intensity and the hardness of catheter, solves latex or silica gel catheter and is inserting and extract in-process tensile deformation, and is internal by extrusion deformation, influences the unobstructed problem of pipeline, can be under the condition of maintaining original external diameter, reduce the wall thickness, effective increase internal diameter size improves catheterization efficiency.

In order to achieve the purpose, the technical scheme of the utility model is realized as follows:

the utility model provides a catheter, includes the body of silica gel or latex material, the inside axial that is equipped with of pipe wall of body supports the filling member, but support the bead structure of filling member for free bending, including a plurality of beads body and the series connection that set gradually the connecting wire of the bead body, the hardness of the bead body is higher than the hardness of body, the flexible of connecting wire.

The design of the supporting filling piece can not only provide support in the axial direction to avoid tensile deformation, but also provide support in the radial direction through the hardness of the bead body, so that the pipe body is prevented from being flattened in the body, and the smooth pipeline is ensured; under the condition of ensuring that the pipe wall of the pipe body has the same strength and hardness, the bead body with higher hardness is arranged, so that the wall thickness can be reduced, the inner diameter can be enlarged, and the design of the bead structure can ensure that the pipe body can be freely bent.

Furthermore, the supporting filling pieces are distributed in the pipe wall of the pipe body at equal intervals.

Furthermore, the bead bodies are spherical or elliptical.

Further, the thickness of the beads in the radial direction of the pipe body is 1/3-2/3 of the thickness of the pipe wall of the pipe body, and the larger the occupied thickness of the beads in the radial direction of the pipe body is, the thinner the total wall thickness of the pipe body can be designed.

Further, the bead body is made of medical materials or metal with hardness higher than that of the tube body.

Furthermore, the outer wall of the pipe body is coated with a hydrophilic coating. The design of the hydrophilic coating can improve biocompatibility and lubricity.

Furthermore, the outer wall of the tube body is provided with a plurality of positioning marked lines along the length direction of the tube body from the front end of the tube head, and the design of the positioning lines is beneficial to medical workers to judge the depth of the pipeline in the tube body when performing related operation and nursing observation.

Furthermore, the number of the positioning marked lines is 16, and the distance between every two adjacent positioning marked lines is 5 mm.

Compared with the prior art, the catheter has the following advantages:

(1) the supporting filling piece with the bead string structure capable of being bent freely is embedded in the catheter body of the catheter, so that the characteristics of good flexibility and bending property of the latex or silica gel catheter are maintained, the axial direction and the radial direction of the catheter can be supported at the same time, the strength and the hardness of the catheter are enhanced, the problems that the latex or silica gel catheter is stretched and deformed in the inserting and pulling processes and is squeezed and flattened in a body to influence the smoothness of a pipeline are solved, the wall thickness can be reduced by arranging the bead body with higher hardness under the condition of maintaining the original outer diameter, the inner diameter size is effectively increased, and the urethral catheterization efficiency is improved.

(2) The outer wall of the catheter body of the catheter is further coated with a hydrophilic coating, and the design of the hydrophilic coating can improve biocompatibility and lubricity; still be provided with the location line, help medical personnel when carrying out relevant operation and nursing observation, judge the pipeline in internal degree of depth, in time discover unusually in time carry out relevant medical treatment.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 is a schematic view of an internal structure of a catheter body of a urinary catheter according to an embodiment of the present invention;

fig. 2 is a cross-sectional view taken along line a-a of fig. 1.

Description of reference numerals:

1-tube body, 2-tube wall, 3-supporting filling piece, 4-bead body, 5-connecting line and 6-hydrophilic coating.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 and 2, the catheter comprises a tube body 1 made of silica gel or latex, wherein a supporting and filling member 3 is axially arranged inside a tube wall 2 of the tube body 1, the supporting and filling member 3 is of a bead structure capable of being freely bent, and comprises a plurality of beads 4 arranged in sequence and a connecting line 5 connected with the beads in series;

the hardness of the bead bodies 4 is higher than that of the pipe body 1, the bead bodies 4 are spherical or oval, the thickness of the bead bodies 4 in the radial direction of the pipe body 1 is 1/3-2/3 of the thickness of the pipe wall 2, the larger the thickness of the bead bodies 4 in the radial direction of the pipe body 1 is, the thinner the overall wall thickness of the pipe body 1 can be designed, and the material of the bead bodies 4 is medical material or metal;

the connecting wire 5 is flexible and bendable, and the material is selected on the basis of not influencing the free bending of the pipe body 1;

the supporting and filling pieces 3 are distributed in the pipe wall 2 of the pipe body 1 at equal intervals, so that the hardness and the strength of the pipe wall 2 are enhanced, meanwhile, the free bending of the pipe body 1 is not influenced, the supporting and filling pieces 3 can be embedded into the pipe wall 2 in a mode of arranging cavity channels in the pipe wall 2, or the pipe body 1 is placed in a mold in advance when the mold is adopted for casting, and is cast and embedded into the pipe wall 2;

the outer wall of the pipe body 2 is covered with a hydrophilic coating 6, and the design of the hydrophilic coating 6 can improve biocompatibility and lubricity; 2 outer walls of body set up a plurality of location marked lines along 2 length direction of body from the tube head front end, and the location marked line has 16, and the interval of adjacent location marked line is 5mm, and the design of location line helps medical personnel to judge the pipeline when carrying out relevant operation and nursing observation, and is internal degree of depth.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a catheter, includes the body of silica gel or latex material, its characterized in that: the utility model discloses a flexible pipe body, including the pipe wall of body, the pipe wall of body is inside to be equipped with along the axial and to support the filling member, support the filling member for the string of beads structure that can freely bend, including a plurality of beads bodies that set gradually and establish ties the connecting wire of bead body, the hardness of bead body is higher than the hardness of body, the flexible bendable of connecting wire.

2. A urinary catheter according to claim 1, wherein: the supporting filling pieces are distributed in the pipe wall of the pipe body at equal intervals.

3. A urinary catheter according to claim 1, wherein: the bead bodies are spherical or elliptical.

4. A urinary catheter according to claim 1, wherein: the thickness of the bead body in the radial direction of the pipe body is 1/3-2/3 of the thickness of the pipe wall of the pipe body.

5. A urinary catheter according to claim 1, wherein: the bead body is made of medical materials or metal with hardness higher than that of the tube body.

6. A catheter according to any of claims 1 to 5 wherein: the outer wall of the pipe body is coated with a hydrophilic coating.

7. A catheter according to any of claims 1 to 5 wherein: the outer wall of the pipe body is provided with a plurality of positioning marked lines along the length direction of the pipe body from the front end of the pipe head.

8. A urinary catheter according to claim 7, characterized in that: the number of the positioning marked lines is 16, and the distance between every two adjacent positioning marked lines is 5 mm.