CN214762789U

CN214762789U - Epidural anesthesia catheter

Info

Publication number: CN214762789U
Application number: CN202120556345.0U
Authority: CN
Inventors: 兰天星; 李朝东; 卢言京
Original assignee: Linyi Xinghua Medical Equipment Co ltd
Current assignee: Linyi Xinghua Medical Equipment Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-11-19
Anticipated expiration: 2031-03-18

Abstract

The application discloses epidural anesthesia pipe includes: the pipe body comprises a head section and a tail section, the inner diameter of the pipe body of the tail section is uniform, and the inner diameter of the pipe body of the head section is gradually reduced and thinned from one end close to the tail section to one end far away from the tail section; spiral steel wires are wrapped in the pipe wall of the pipe body, the spiral pitches of the spiral steel wires in the tail section are equal, and the spiral pitches of one end, close to the tail section, of the head section are gradually increased towards one end, far away from the tail section, of the head section. The application provides an epidural anesthesia pipe, the spiral pitch that increases gradually of its interior spiral steel wire of tapered head section and head section for anesthesia pipe's head end is further gradually soft, if meet the automatic redirecting of resistance when putting into the dura mater exocoel, and it is little to the stress of dura mater because of the pipe is crooked when keeping somewhere after putting into, prevents to damage nerve, blood vessel.

Description

Epidural anesthesia catheter

Technical Field

The application belongs to the technical field of medical equipment, concretely relates to epidural anesthesia pipe.

Background

The epidural nerve block is an anesthesia method widely applied in clinic, and has the advantages of simple operation, low cost, easy management in operation, convenient epidural analgesia after operation and the like, and the main component used in the anesthesia method is an anesthesia catheter.

The anesthesia catheter needs axial rigidity to smoothly enter the dura mater outer cavity when in use, the wall of the anesthesia catheter which is kept in the dura mater outer cavity is softer due to the fact that the dura mater outer cavity is rich in nerve vessels, the damage to nerves and vessels is smaller, the direction is easier to change to reach a specified position, and the outer diameter of the anesthesia catheter needs to be connected with a syringe through a connector because the outer diameter of the anesthesia catheter is small, and the outer diameter of the catheter is smaller and more difficult to be matched with the connector.

The traditional anesthesia catheter comprehensively considers embeddability, is convenient to be connected with a connector and properly reduces injury, and a straight tube type catheter is mostly selected, however, when the traditional anesthesia catheter with the straight tube type structure is inserted into a small injury part, the anesthesia catheter can press nerves, patients feel uncomfortable, and complications are easy to generate.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present application provides an epidural anesthesia catheter, including:

the pipe body comprises a head section and a tail section, the inner diameter of the pipe body of the tail section is uniform, and the inner diameter of the pipe body of the head section is gradually reduced and thinned from one end close to the tail section to one end far away from the tail section;

spiral steel wires are wrapped in the pipe wall of the pipe body, the spiral pitches of the spiral steel wires in the tail section are equal, and the spiral pitches of one end, close to the tail section, of the head section are gradually increased towards one end, far away from the tail section, of the head section.

Further, the wire diameter of the spiral steel wire is 0.05-0.15 mm.

Preferably, the diameter of the spiral steel wire is 0.08-0.12 mm, and more preferably 0.1 mm.

Further, the spiral pitch of the spiral steel wire in the tail section is 0.8-1.2 times of the wire diameter of the spiral steel wire.

Preferably, the spiral pitch of the spiral steel wire in the tail section is equal to the wire diameter of the spiral steel wire.

Furthermore, the end part of the tail section is provided with a medicine inlet, one end of the head section, which is far away from the tail section, is provided with a medicine outlet, and the caliber of the medicine outlet is 1/10-1/2 of that of the medicine inlet.

Preferably, the caliber of the medicine outlet is 1/5-1/3 of the caliber of the medicine inlet.

Further, the spiral pitch of the spiral steel wire starts to increase when the spiral steel wire is far away from the medicine outlet 1/2-4/5 head section pipe body length, and the maximum spiral pitch of the spiral steel wire in the head section is 1-3 mm.

Further, the length of the head section of the pipe body is 3-10 cm.

Furthermore, 1-6 side holes are formed in the pipe wall of the head section of the pipe body.

Further, the internal diameter of the tail section of the pipe body is 0.5-0.8 mm.

Further, the spiral steel wire is made of medical stainless steel.

Optionally, the spiral steel wire may be made of 304 stainless steel for medical use or 316 stainless steel for medical use, and is integrally formed.

Further, the tube body is made of soft and transparent materials.

Optionally, the material of the pipe body may be a thermoplastic polyurethane elastomer.

Benefits that can be produced by the present application include, but are not limited to:

1. compared with the traditional straight tube type catheter, the epidural anesthesia catheter provided by the application has the advantages that the inner diameter of the catheter body of the head section is gradually reduced, so that the head section of the anesthesia catheter can easily and smoothly enter the epidural space when in use, and the thin tube diameter can reduce the compression on nerves and blood vessels and relieve the discomfort of a patient;

2. according to the epidural anesthesia catheter, the spiral steel wire is arranged in the catheter body for reinforcement, so that on one hand, the tensile strength of the catheter wall of the catheter body can be obviously improved, on the other hand, the spiral steel wire of the head section has a supporting effect on the catheter body, and the liquid medicine blockage caused by the fact that the head section is soft and too thin and is flattened is prevented;

3. according to the epidural anesthesia catheter provided by the application, the tapered head section and the gradually increased spiral pitch of the spiral steel wire in the head section enable the head end of the anesthesia catheter to be further gradually softened, and if resistance is met during placement into an epidural space, the direction is automatically changed, and the stress on the dura mater due to the bending of the catheter is small during placement, so that nerves and blood vessels are prevented from being damaged;

4. the application provides an epidural anesthesia pipe need not to use the developer and can develop under X-ray, and the spiral steel wire supports simultaneously and makes anesthesia pipe antitorque book, even 180 degrees of fifty percent discount, the inflow of liquid medicine is still unobstructed to the rupture force of head portion improves to 25N, has showing the promotion in the 10N of ordinary pipe relatively.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic diagram of an epidural anesthesia catheter;

FIG. 2 is a cross-sectional view of an epidural anesthesia catheter;

FIG. 3 is a right side view of an epidural anesthesia catheter;

in the figure: 1. a pipe body; 101. a head section; 102. a tail section; 103. a medicine inlet; 104. a medicine outlet; 105. a side hole; 2. a spiral wire.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

So that the manner in which the above recited objects, features and advantages of the present application can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of 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 application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

One embodiment of the present application provides an epidural anesthesia catheter which is effective in reducing nerve and blood vessel damage when in use. As shown in fig. 1-3, the epidural anesthesia catheter comprises:

the tube body 1 is made of soft and transparent materials, and the tube body 1 can be flexibly and transparently inserted into the epidural space so as to observe whether liquid medicine flows in. For example, the material of the pipe body 1 may be a thermoplastic polyurethane elastomer, and the material is uniform.

As shown in fig. 1, the pipe body 1 includes a head section 101 and a tail section 102 which are integrally formed, wherein the pipe body inner diameter of the tail section 102 is uniform, and the pipe body inner diameter of the head section 101 is gradually reduced from an end close to the tail section 102 to an end far from the tail section 102. Compared with the traditional straight pipe type anesthesia catheter, the arrangement has the advantages that on one hand, the head section 102 of the anesthesia catheter can easily and smoothly axially enter the dura mater outer cavity when in use, and on the other hand, the thin pipe diameter of the head section 102 can reduce the compression on nerves and blood vessels and relieve the discomfort of a patient when in detention.

Referring to fig. 1 to 3, the spiral steel wires 2 are wrapped in the tube wall of the tube body 1, wherein the spiral pitches of the spiral steel wires 2 in the tube wall of the tail section 102 are equal, and the spiral pitches in the tube wall of the head section 101 gradually increase from the end close to the tail section 102 to the end far away from the tail section 102.

The introduction of spiral steel wire 2 can show the pipe wall tensile strength that improves body 1 on the one hand, and on the other hand, spiral steel wire 2 in the head portion 101 pipe wall still has a supporting role to the body, prevents that head portion 101 is soft and too thin and is squashed and cause the liquid medicine to block up. Meanwhile, the tapered head section 101 and the gradually increased spiral pitch of the spiral steel wire 2 in the head section ensure that the head end of the anesthetic catheter is further gradually softened under the condition of ensuring that the catheter is not squashed, if the direction of the anesthetic catheter is automatically changed when the anesthetic catheter is placed into an epidural space, the stress on the dura mater caused by the bending of the catheter is small when the anesthetic catheter is placed into an indwelling epidural space, and the nerve and blood vessels are prevented from being damaged; in addition, the introduction of the spiral steel wire 2 allows the anesthetic tube to be ultra-intensely developed under X-ray without the use of a developer.

In one embodiment, the spiral wire 2 has a wire diameter of 0.05 to 0.15 mm. Preferably, the diameter of the spiral wire 2 may be 0.08 to 0.12mm, and more preferably 0.1 mm.

In one embodiment, the helical pitch of the helical wire 2 in the tail section 102 is 0.8 to 1.2 times the wire diameter of the helical wire 2. Preferably, the spiral pitch of the spiral steel wire 2 in the tail section 102 is equal to the wire diameter of the spiral steel wire 2.

As shown in figure 1, the end part of the tail section 102 of the tube body 1 is provided with a medicine inlet 103, one end of the head section 101 far away from the tail section 102 is provided with a medicine outlet 104, and the caliber of the medicine outlet 104 is 1/10-1/2 of the caliber of the medicine inlet 103. Preferably, the aperture of the medicine outlet 104 is 1/5-1/3 of the aperture of the medicine inlet 103.

In a preferred embodiment, the spiral pitch of the spiral steel wire 2 begins to increase at a certain distance from the medicine outlet 104, the length is preferably 1/2-4/5 of the tube body of the head section, and the maximum spiral pitch of the spiral steel wire 2 in the head section 103 is 1-3 mm.

In a preferred embodiment, the length of the head section 101 of the tube body 1 is 3-10 cm, the inner diameter of the tail section 102 of the tube body 1 is 0.5-0.8 mm, and the spiral steel wire 2 is made of medical stainless steel, and optionally, the spiral steel wire 2 may be made of 304 medical stainless steel or 316 medical stainless steel and is integrally formed.

Optionally, the pipe wall of the head section 101 of the pipe body 1 may further be provided with 1-6 side holes, which are not shown in the figure.

The anesthesia catheter provided by the embodiment can be effectively anti-folding, even if the anesthesia catheter is folded by 180 degrees, the liquid medicine can flow into the anesthesia catheter smoothly, the breaking force at the foremost end of the head section 101 is increased to 25N, and the breaking force is obviously improved compared with 10N of a common catheter.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. An epidural anesthesia catheter, comprising:

2. The epidural anesthesia catheter according to claim 1, wherein the wire diameter of the spiral wire is 0.05 to 0.15 mm.

3. The epidural anesthesia catheter according to claim 1, wherein the helical pitch of the helical wire in the tail section is 0.8 to 1.2 times the wire diameter of the helical wire.

4. The epidural anesthesia catheter according to claim 1, wherein the end part of the tail section is provided with a drug inlet, the end of the head section far away from the tail section is provided with a drug outlet, and the caliber of the drug outlet is 1/10-1/2 of the caliber of the drug inlet.

5. The epidural anesthesia catheter according to claim 4, wherein the spiral pitch of the spiral wire starts to increase at a distance 1/2-4/5 from the drug outlet port in the head section tube length, the maximum spiral pitch of the spiral wire in the head section being 1-3 mm.

6. The epidural anesthesia catheter of claim 1, wherein the length of the head section of the tube body is 3-10 cm.

7. The epidural anesthesia catheter according to claim 1, wherein 1-6 side holes are provided on the wall of the head section of the catheter body.

8. The epidural anesthesia catheter of claim 1, wherein the tail section of the tube body has an inner diameter of 0.5 to 0.8 mm.

9. The epidural anesthesia catheter of claim 1, wherein the spiral wire is made of medical stainless steel.

10. The epidural anesthesia catheter of claim 1, wherein the tube is selected from the group consisting of soft, transparent materials.