CN210205559U - Bending-resistant central venous catheter - Google Patents

Abstract

The utility model provides an anti central venous catheter that buckles belongs to medical health equipment technical field, including most advanced, built-in body, connector, epitaxial body, spring. The spring is spirally wound in the colloid between the inner wall and the outer wall of the tip, the built-in pipe body, the connector and the extension pipe body, so that the effect of supporting the pipe wall is achieved, meanwhile, the bending deformation of the conduit is prevented, the smooth infusion is ensured, the pain of patients is reduced, and the workload of medical care is relieved.

Description

Bending-resistant central venous catheter

Technical Field

The utility model belongs to the technical field of medical health equipment, especially, relate to an anti central venous catheter that buckles.

Background

The central venous catheter is an intravascular tube placed in a great vein, is used for measuring central venous pressure and long-term parenteral nutrition and administration of liquid medicine injection, establishes a good infusion channel for a patient who carries out repeated infusion, avoids pain caused by repeated puncture, and is widely applied to clinical medical diagnosis and treatment activities such as anesthesia departments, emergency departments, ICU wards, surgery, internal medicine, thoracic surgery, vascular surgery and the like.

At present, most of the common central venous catheters are on the market, the catheters are poor in elasticity, flexibility and tensile resistance and easy to break or collapse, particularly, when the body position of a patient changes, the incidence rate of catheter folding is higher, the pain of the patient is increased, the working efficiency of nurses is reduced, and serious patients can cause medical accidents.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an anti central venous catheter of buckling to solve the problem that current central venous catheter easily breaks and sinks. The utility model provides an anti central venous catheter that buckles, including most advanced, built-in body, connector, epitaxial body and spring, most advanced is located the front end of built-in body, and built-in body and epitaxial body are connected respectively at the connector both ends, are provided with the spring in most advanced, built-in body, connector and the epitaxial body, the spring spiral winding is in the colloid between the inner wall of most advanced, built-in body, connector and epitaxial body and the outer wall.

In the above aspect, the spring preferably has a corrugated cross-section.

In the above scheme, the spring is preferably a metal spring or a metal matrix composite spring, and the surface of the spring is galvanized.

In the above scheme, the diameter of the spring is preferably 0.1-0.2 mm, and the interval between every two helical spring rings is preferably 0.2-0.4 mm.

In the above aspect, it is preferable that the spring in the inner tube body and the connector is spirally wound in both directions.

In the above aspect, the metal spring is preferably a high-strength galvanized wire spring.

In the above solution, it is preferred that the helical turns of the spring in the connector are spaced by 0.2 mm.

In the above solution, it is preferable that the end of the spring in the tip is tightened and the end is ground into a circular arc or a semicircle.

In the above embodiment, it is preferable that the tip is made of a blue special polyureaurethane material.

In the above scheme, it is preferable that the length scale is marked on the built-in tube body so as to facilitate understanding of the depth of the catheter inserted into the body of the patient.

Compared with the common central venous catheter, the utility model has the advantages that: 1. the inner wall of the catheter is provided with the spiral wound spring as the lumen bracket, so that the catheter can not be twisted completely in the direction of the transverse axis and the longitudinal axis, the lumen can be ensured to be smooth under any condition, and the catheter is particularly suitable for patients with various body positions; 2. the catheter has good elasticity and good flexibility, and can reduce puncture or damage to blood vessels and nerves; 3. the tough spring support and the catheter colloid are integrated, so that the occurrence of catheter fracture is avoided, the medical risk is reduced, and medical accidents are avoided.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the present novel embodiment 2;

FIG. 3 is a cross-sectional view of an embodiment of the present invention with a catheter inside;

fig. 4 is a cross-sectional view of an embodiment of the present invention.

Reference numerals: 1 tip, 2 built-in tube bodies, 3 connectors, 4 extension tube bodies and 5 springs

Detailed Description

The present invention will be further described with reference to the following examples.

EXAMPLE 1 an anti-kink Single-Cavity Central venous catheter

The bending-resistant single-cavity central venous catheter shown in the attached figure 1 comprises a tip 1, an internal tube body 2, a connector 3, an external tube body 4 and a spring 5. The tip 1 is positioned at the front end of the built-in tube body 2 and used for puncturing a blood vessel and positioning a catheter, the tip 1 is made of a blue special polyureaurethane material, is not permeable to X rays and can be used for determining the position of the catheter tip 1 in a medical shooting at any time; the built-in catheter 2 and the extension tube body 4 are hollow hoses in the middle, and the liquid medicine is transported to the body of a patient through a tube cavity; the built-in tube body 2 is inserted into the body of a patient, and length scales are marked outside the built-in tube body, so that the depth of the catheter inserted into the body of the patient can be conveniently observed and known; the two ends of the connector 3 are respectively connected with the built-in pipe body 2 and the epitaxial pipe body 4, and the function of fixing the guide pipe is achieved; be provided with spiral winding spring 5 in the colloid between the inner wall and the outer wall of pointed end 1, built-in body 2, connector 3 and extension body 4, spring 5 can support the pipe wall, strengthens the pipe toughness and reduces the possibility of pipe rupture, and simultaneously for reinforcing spring intensity, the cross-section of spring 5 sets up to the corrugate.

In order to achieve better anti-bending and anti-tensile effects and ensure safe use, the spring 5 of the embodiment is a high-strength galvanized steel wire spring, the diameter of the high-strength galvanized steel wire spring in the built-in pipe body 2 and the extension pipe body 4 is 0.2 mm, the diameter of the high-strength galvanized steel wire spring in the tip 1 is 0.1 mm, each spiral spring ring is 0.4 mm at an interval, the end part of the high-strength galvanized steel wire spring in the tip 1 is half and tight, the end of the high-strength galvanized steel wire spring is ground into a circular arc shape, and the high-strength galvanized steel wire spring can be effectively prevented from drilling.

In the use, built-in body (2) are arranged in internally, and are invisible to naked eyes, consequently set up its inside spring (5) to two-way spiral winding, can effectively strengthen tensile compressive strength, guarantee safe in utilization. Meanwhile, the connector (3) has higher requirements on tension and compression resistance due to frequent rotation, so that the spring therein is also arranged to be spirally wound in two directions, and the spacing between the spiral spring rings is 0.2 mm.

Example 2 three-lumen central venous catheter

Fig. 2 shows a three-cavity central venous catheter, which comprises a tip 1, an internal tube 2, a connector 3, an external tube 4 and a spring 5. The tip 1 is positioned at the front end of the built-in tube body 2 and used for puncturing a blood vessel and positioning a catheter, the tip 1 is made of a blue special polyureaurethane material, is not permeable to X rays and can be used for determining the position of the catheter tip 1 in a medical shooting at any time; the built-in catheter 2 and the extension tube body 4 are hollow hoses in the middle, and the liquid medicine is transported to the body of a patient through a tube cavity; the built-in tube body 2 is inserted into the body of a patient, and length scales are marked outside the built-in tube body, so that the depth of the catheter inserted into the body of the patient can be conveniently observed and known; the two ends of the connector 3 are respectively connected with the built-in pipe body 2 and the epitaxial pipe body 4, and the function of fixing the guide pipe is achieved; be provided with spiral winding spring 5 in the colloid between the inner wall and the outer wall of pointed end 1, built-in body 2, connector 3 and extension body 4, spring 5 can support the pipe wall, strengthens the pipe toughness and reduces the possibility of pipe rupture, and simultaneously for reinforcing spring intensity, the cross-section of spring 5 sets up to the corrugate.

In order to achieve better anti-bending and anti-tensile effects and ensure safe use, the spring 5 of the embodiment is a high-strength galvanized steel wire spring, the diameter of the high-strength galvanized steel wire spring in the built-in pipe body 2 and the extension pipe body 4 is 0.15 mm, the diameter of the high-strength galvanized steel wire spring in the tip 1 is 0.1 mm, each spiral spring ring is 0.3 mm at an interval, the end part of the high-strength galvanized steel wire spring in the tip 1 is half and a circle, the end of the high-strength galvanized steel wire spring is ground into a round shape, and the spring can be effectively prevented from drilling through.

In the use, built-in body (2) are arranged in internally, and are invisible to naked eyes, consequently set up its inside spring (5) to two-way spiral winding, can effectively strengthen tensile and compressive strength degree, guarantee safe in utilization. Meanwhile, the connector (3) has higher requirements on tension and compression resistance due to frequent rotation, so that the spring therein is also arranged to be spirally wound in two directions, and the spacing between the spiral spring rings is 0.2 mm.

While the present invention has been particularly shown and described with reference to particular embodiments thereof, the invention is not limited to the disclosed examples, and other variations which can be derived therefrom by those skilled in the art do not depart from the scope of the invention.

Claims (9)

1. The utility model provides an anti central venous catheter that buckles, includes most advanced (1), built-in body (2), connector (3), epitaxial body (4), most advanced (1) are located the front end of built-in body (2), built-in body (2) and epitaxial body (4) are connected respectively at connector (3) both ends, its characterized in that: a spring (5) is arranged in the tip (1), the built-in pipe body (2), the connector (3) and the epitaxial pipe body (4), and the spring (5) is spirally wound in colloid among the inner wall and the outer wall of the tip (1), the built-in pipe body (2), the connector (3) and the epitaxial pipe body (4); the end part of the spring (5) in the tip (1) is tightly tightened for a circle and a half, and the end is ground into a circular arc or a semicircle.

2. A kink-resistant central venous catheter as in claim 1 wherein: the cross section of the spring (5) is corrugated.

3. A kink-resistant central venous catheter as in claim 1 wherein: the spring (5) is a metal spring or a metal-based composite material spring, and the surface of the spring is galvanized.

4. A kink-resistant central venous catheter as in claim 1 wherein: the diameter of the spring (5) is 0.1-0.2 mm, and the interval between every two spiral spring rings is 0.2-0.4 mm.

5. A kink-resistant central venous catheter as in claim 1 wherein: the built-in pipe body (2) and the spring (5) in the connector (3) are spirally wound in a bidirectional mode.

6. A kink-resistant central venous catheter as in claim 2 wherein: the spring (5) is a high-strength galvanized steel wire spring.

7. A kink-resistant central venous catheter as in claim 4 wherein: the spacing of the spiral spring rings of the spring (5) in the connector (3) is 0.2 mm.

8. The kink-resistant central venous catheter of any of claims 1-7 wherein: the tip (1) is made of a blue special polyureaurethane material.

9. The kink-resistant central venous catheter of any of claims 1-7 wherein: the built-in pipe body (2) is marked with length scales.

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