CN218833363U

CN218833363U - Reinforced anesthetic catheter capable of adjusting temperature and anesthetic catheter assembly

Info

Publication number: CN218833363U
Application number: CN202222117016.3U
Authority: CN
Inventors: 卢言京; 兰天星; 郭心馨
Original assignee: Linyi Xinghua Medical Equipment Co ltd
Current assignee: Linyi Xinghua Medical Equipment Co ltd
Priority date: 2022-08-11
Filing date: 2022-08-11
Publication date: 2023-04-11
Anticipated expiration: 2032-08-11

Abstract

The application provides a reinforced anesthetic catheter capable of adjusting temperature and an anesthetic catheter assembly, which relate to the technical field of medical anesthetic instruments and comprise a catheter body with an outer wall and an inner wall, wherein the catheter body is made of a thermoplastic high polymer material; the anesthetic tube also comprises heat conducting wires and cold conducting wires, and the heat conducting wires and the cold conducting wires are positioned between the inner wall and the outer wall; a spiral wire extending along the catheter body is further arranged between the inner wall and the outer wall to support the catheter body. This kind of mode of setting has realized the temperature control to the pipe body, thereby has realized right the control of pipe body hardness for the temperature of anesthesia pipe no longer only receives room temperature, human temperature's influence, has effectively solved the anesthesia pipe and has put into the problem that the difficulty is big, fragile nerve and blood vessel, can strengthen the axial rigidity of anesthesia pipe by to a great extent simultaneously, and increases its hardness in the less degree, can support the pipe body gets into the dura mater exocoel, makes it enough buckle, also can get into the human body smoothly.

Description

Reinforced anesthetic catheter capable of adjusting temperature and anesthetic catheter assembly

Technical Field

The application relates to the technical field of medical anesthesia apparatuses, in particular to a reinforced anesthesia catheter and an anesthesia catheter assembly capable of adjusting temperature.

Background

Epidural nerve block is a widely used anesthesia method in clinical practice, i.e. local anesthetic is injected into the epidural space to block the spinal nerve root, temporarily paralyzing the innervating area. The anesthesia method has the advantages of simple operation, low cost, easy management in operation, convenient epidural analgesia after operation and the like. The main component used by the anesthesia method is an anesthesia catheter, the anesthesia catheter needs to be placed into a narrow epidural space, so the anesthesia catheter is very thin, the outer diameter is generally not more than 1mm, the anesthesia catheter needs to be placed into the epidural space due to small size, so good axial rigidity is needed to enable the anesthesia catheter to be placed into the epidural space, so the anesthesia catheter is usually made of high polymer materials with higher hardness, and the head end is a blind end, so the head end in the prior art is harder, careless operation is performed, the epidural space is very easy to be punctured, the anesthesia catheter is placed into a subarachnoid space, small blood vessels are rich in the epidural space, and the hard head end is easy to damage blood vessels or nerves.

At present, in order to solve the above problems, there have been methods of welding a soft tip end to a catheter or using a thermoplastic elastomer material such as TPU or TPE to make an anesthetic catheter have a characteristic of becoming soft when heated. However, in order to satisfy the requirement of sufficient axial rigidity in the implantation process, the above arrangement mode can only reduce certain hardness, but still cannot achieve the softness for preventing the capillary vessel from being damaged; and even if the thermoplastic elastomer material is adopted, the effect of reducing the hardness along with the temperature rise can be achieved, but the temperature of the anesthesia catheter can only rise depending on the temperature of the human body after the anesthesia catheter is placed into the human body, so the anesthesia catheter is influenced by the room temperature and the placement speed, the specific hardness of the anesthesia catheter cannot be controlled, if the placement speed is slow, the material possibly becomes soft when entering into an epidural space, and further the problem that the anesthesia catheter is knotted in the epidural space and cannot be taken out is possibly caused. In addition, because the thermoplastic elastomer has the characteristic of changing the hardness of the thermoplastic elastomer along with the temperature, the setting of the material enables the hardness of the anesthetic tube to be changeable, when the temperature is higher, the hardness of the anesthetic tube is lower, the supportability is poorer, the bending part can be bent to seal the medicine delivery channel, the problem of incapability of use is caused, the operation process is delayed, and the life health of a patient is threatened.

It can thus be seen that the prior art is subject to further improvement and advancement.

SUMMERY OF THE UTILITY MODEL

The application provides a strenghthened type anesthesia catheter and anesthesia catheter subassembly that can adjust the temperature to solve at least one technical problem in the above-mentioned technical problem.

In a first aspect, the application provides a reinforced anesthetic tube capable of regulating temperature, comprising a tube body having an outer wall and an inner wall, wherein the tube body is made of a thermoplastic polymer material;

the anesthetic tube further comprises a heat conducting wire and a cold conducting wire, and the heat conducting wire and the cold conducting wire are positioned between the inner wall and the outer wall;

a spiral wire extending along the catheter body is further arranged between the inner wall and the outer wall to support the catheter body.

The reinforced anesthetic tube capable of temperature regulation in the present application also has the following additional technical features:

the spiral wire comprises a sparse section and a dense section, and the sparse section is arranged at one end, close to the head end of the catheter body, of the spiral wire.

The sparse section and the head end of the catheter body are provided with a gap, and the axial length range of the gap is 1-5mm.

The heat conducting wires and the cold conducting wires are spirally arranged along the inner wall, and the heat conducting wires and the cold conducting wires are copper wires.

The spiral diameters of the heat conducting wires and the cold conducting wires are equal and larger than that of the spiral wires.

The cold conducting wires and the inner walls of the heat conducting wires are uniformly arranged in a staggered mode, so that the temperature of the catheter body can be uniformly adjusted.

The spiral diameter of the heat-conducting wires is larger than the diameter of the cross section of the inner wall and smaller than the spiral diameter of the spiral wires; the spiral diameter of the cold-conducting wire is larger than that of the spiral wire and smaller than that of the cross section of the outer wall.

The temperature sensor is arranged at the head end of the catheter body.

In a second aspect, the present application further provides an anesthetic tube assembly, including a reinforced anesthetic tube capable of adjusting temperature, and further including a temperature control assembly, the temperature control assembly includes a temperature display device and a multi-stage temperature control device.

the multistage temperature control device also comprises a heat source connected with the heat conducting wires and a cold source connected with the cold conducting wires.

Since the technical scheme is used, the utility model discloses the beneficial effect who gains does:

1. the utility model provides a pair of strenghthened type anesthesia catheter that can adjust temperature, the catheter body adopts thermoplastic elastomer material, and this kind of material can reduce hardness along with the rising of temperature. The heat conducting wires and the cold conducting wires can respectively increase the temperature of the catheter body and decrease the temperature of the catheter body; the temperature control to the catheter body is realized, the control to the hardness of the catheter body is realized, the temperature of the anesthesia catheter is not only influenced by the room temperature and the human body temperature any more, and the problems that the anesthesia catheter is difficult to insert and is easy to damage nerves and blood vessels are effectively solved. Secondly, strenghthened type anesthesia catheter still is provided with the spiral silk, because the hardness of thermoplasticity macromolecular material can change along with the temperature, and the diameter of heat conduction silk and cold conduction silk is also less, therefore the whole hardness of anesthesia catheter is the change, and the setting of spiral silk can strengthen anesthesia catheter's bending resistance to a great extent, and increases its hardness to a lesser extent, can support the catheter body gets into the dura mater spinalis exocoel, makes it can enough buckle, also can get into the human body smoothly. Specifically, when the anesthesia catheter is placed in the body, the anesthesia catheter needs to have good axial rigidity so as to be convenient for intervention into the human body, the temperature of the anesthesia catheter can be reduced due to the opening of the cold conducting wire, and the phenomenon that the anesthesia catheter is difficult to intervene into the human body due to the fact that the catheter body made of thermoplastic high polymer materials is influenced by the temperature and has too low hardness due to the fact that the anesthesia catheter body is inserted into the human body for a long time is avoided; when the anesthesia catheter gets into the dura mater exocoel and passes epidural needle point, through lead closing of cold silk with opening of heat conduction silk makes the anesthesia catheter need turn to when getting into the dura mater exocoel, the pipe body intensifies and softens, reduces anesthesia catheter is to the stress of dura mater, causes the damage to the dura mater when being convenient for touch dura mater, when the anesthesia catheter has turned to and has advanced to human head along the dura mater exocoel, the closing of heat conduction silk with opening of cold conduction silk, make the temperature of anesthesia catheter reduces, and the hardness increases, makes its direction of keeping unchangeable, prevents because most hardness of catheter front end is crossed lowly, makes it buckle, change direction in the dura mater exocoel, and then leads to the problem emergence of anesthesia failure. And the spiral wire can always play a role in supporting the anesthesia catheter, so that the bending resistance of the anesthesia catheter is ensured to a great extent.

2. As a preferred embodiment, the spiral wire comprises a sparse section and a dense section, and the sparse section is arranged at one end of the spiral wire close to the head end of the catheter body, the arrangement mode enables the density of the spiral wire at the head end of the anesthesia catheter, namely, the part needing to be bent, to be small, the pitch to be large, the influence of the spiral wire on the hardness of the bent part of the anesthesia catheter to be reduced to a smaller extent, and the anesthesia catheter can move along the epidural space to the direction close to the head under the condition of sufficient flexibility.

3. As a preferred embodiment, the heat conducting wires and the cold conducting wires are arranged along the inner wall in a spiral manner, so that the heat conducting wires and the cold conducting wires can conduct heat and cold, the bending resistance of the anesthetic catheter can be enhanced to a certain extent, the hardness of the anesthetic catheter is enhanced to a small extent, and the problem that the anesthetic catheter is blocked due to bending of the anesthetic catheter under the condition of moderate hardness is further solved to a great extent.

4. The utility model provides a pair of anesthesia catheter subassembly, including a strenghthened type anesthesia catheter that can adjust the temperature, be provided with temperature sensor and temperature display device, just temperature sensor with the temperature that sets up that temperature display device connects makes medical personnel can accurately know the anesthesia catheter to judge the moderate condition of temperature, and adjust heat conduction silk or cold conduction silk.

Drawings

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

FIG. 1 is a schematic view of a reinforced anesthetic tube with temperature regulation provided herein;

FIG. 2 is a schematic cross-sectional view of a reinforced temperature-adjustable anesthetic tube according to the present application;

figure 3 is a schematic cross-sectional view of another reinforced anesthetic catheter capable of temperature regulation as provided herein.

Reference numerals

The heat conduction pipe comprises a pipe body 1, an outer wall 11, an inner wall 12, heat conduction wires 2, cold conduction wires 3, spiral wires 4, sparse sections 41, dense sections 42, a temperature sensor 5, a cold source 6 and a heat source 7.

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.

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

In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; 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 invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, a first feature "on" or "under" a second feature may be directly contacting the second feature or the first and second features may be indirectly contacting the second feature through intervening media. In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like 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 present invention. 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.

In the present application, as shown in fig. 1 to 3, a reinforced anesthetic tube capable of temperature adjustment is provided, which includes a tube body 1 having an outer wall 11 and an inner wall 12, wherein the tube body 1 is made of a thermoplastic polymer material; the anesthetic tube further comprises heat conducting wires 2 and cold conducting wires 3, and the heat conducting wires 2 and the cold conducting wires 3 are located between the inner wall 12 and the outer wall 11; a spiral wire 4 extending along the catheter body 1 is further disposed between the inner wall 12 and the outer wall 11 to support the catheter body 1.

Specifically, the spiral wire can be formed by winding a medical austenite flat stainless steel wire or a medical austenite flat stainless steel strip. In the using process, firstly, when the anesthesia catheter is placed in, the anesthesia catheter needs to have better axial rigidity so as to be convenient for intervention into a human body, at the moment, the cold-conducting wire 3 is opened, so that the temperature of the anesthesia catheter is reduced, and the phenomenon that the anesthesia catheter is difficult to intervene into the human body due to too low hardness of the catheter body 1 made of thermoplastic high polymer materials because of longer time for intervening into the human body is avoided; when the anesthetic catheter enters the epidural space and passes through the needle point of the epidural needle, the cold-conducting wire 3 is closed, and the heat-conducting wire 2 is opened; anesthesia catheter need turn to the time, catheter body 1 need heat up and soften, reduces anesthesia catheter is to the stress of dura mater, causes the damage to the dura mater when being convenient for touch duramater, closes when anesthesia catheter has turned to advance to human head along the dura mater exocoel heat-conducting wire 2, opens lead cold wire 3, make the temperature of anesthesia catheter reduces, and hardness increase makes it keep the direction unchangeable, prevents because of most hardness of catheter front end is crossed lowly, makes it buckle, change direction in the dura mater exocoel, and then leads to the problem emergence of anesthesia failure. In the process, the spiral wire 4 always plays a role in supporting the anesthetic tube, and the bending resistance of the anesthetic tube is ensured to a great extent.

As a preferred embodiment, as shown in fig. 1, the spiral wire 4 comprises a sparse segment 41 and a dense segment 42, and the sparse segment 41 is disposed at one end of the spiral wire 4 close to the head end of the catheter body 1.

Specifically, the sparse section 41 is arranged to enable a part of the front end of the anesthetic tube, which needs to be bent, to have a smaller hardness and a smaller bending resistance, so as to ensure that the part can be smoothly bent and moved to a position close to the head of a patient along the epidural space, where it is noted that, in this application, the sparse section 21 and the dense section 22 are both relatively sparse and dense, and the dense section 22 has a very small influence on the hardness of the anesthetic tube, and specifically, different pitches can be selected according to use conditions, which is not limited in this application. .

As a preferred embodiment, as shown in FIG. 1, the sparse segment 41 has a gap 43 with the tip end of the catheter body 1, and the axial length of the gap 43 is in the range of 1-5mm.

Specifically, be in after the human body is put into to anesthesia catheter's head end, anesthesia catheter's head end need at first buckle, and the temperature of heat conduction wire 2 may not increase to preset the temperature this moment yet, but because the head end has got into the human body, can receive human body temperature's influence and soften, for making the head end of pipe body 1 can buckle smoothly and do not harm the dura mater, consequently is not provided with spiral silk 4 in its head end certain distance, guarantees that it can buckle under the lower circumstances of hardness.

It should be noted that, the specific placement positions of the cold-conducting wire 3 and the heat-conducting wire 2 are not limited in the present application, and may adopt the same placement positions as the spiral wire 4, even if the heat-conducting wire 2 and the cold-conducting wire 3 both have a certain gap 43 with the head end of the catheter body 1, the head end of the catheter body 1 is further ensured to have smaller hardness and small bending resistance when being bent; in addition, the head end of the catheter body 1 can be provided with the heat conducting wires 2, and the cold conducting wires 3 and the spiral wires 4 are arranged at a certain distance from the head end of the catheter body 1, so that the head end of the catheter body 1 can have higher temperature when needing to be bent, and the hardness of the head end of the catheter body is smaller.

As a preferred embodiment, as shown in fig. 1 to 3, the heat conducting wires 2 and the cold conducting wires 3 are both spirally arranged along the inner wall 12, and the heat conducting wires 2 and the cold conducting wires 3 are both copper wires.

It should be noted that the present application does not limit the specific shape of the heat conducting wires 2 and the cold conducting wires 3, and in a preferred embodiment as shown in fig. 1 to 3, the heat conducting wires 2 and the cold conducting wires 3 are also arranged in a spiral manner, which can further increase the stiffness of the anesthesia catheter by a small amount on the basis of greatly improving the overall axial stiffness of the anesthesia catheter.

As a preferred embodiment, as shown in fig. 1-2, the spiral diameters of the heat conducting wires 2 and the cold conducting wires 3 are equal to and larger than the spiral diameter of the spiral wires 4.

In particular, the arrangement mode enables the heat conducting wires 2 and the cold conducting wires 3 to transmit the temperature to the outer side of the anesthesia catheter more quickly, and the hardness of the anesthesia catheter is adjusted more quickly.

As a preferred embodiment, as shown in fig. 1, the cold-conducting wires 3, the heat-conducting wires 2 and the inner wall 12 are uniformly staggered to uniformly adjust the temperature of the catheter body 1.

Specifically, the cold conducting wires 3 and the heat conducting wires 2 are uniformly arranged, so that the temperature of the catheter body 1 can be uniformly adjusted by the cold conducting wires 3 and the heat conducting wires 2.

As a preferred embodiment, as shown in fig. 3, the spiral diameter of the heat conducting wire 2 is larger than the diameter of the cross section of the inner wall 12 and is smaller than the spiral diameter of the spiral wire 4; the spiral diameter of the cold-conducting wire 3 is larger than that of the spiral wire 4 and smaller than that of the cross section of the outer wall 11.

As a preferred embodiment, as shown in fig. 1, the catheter further comprises a temperature sensor 5, and the temperature sensor 5 is disposed at the tip end of the catheter body.

The temperature sensor 5 is capable of sensing the temperature of the catheter body 1.

In the present application, as shown in fig. 1, there is also provided an anesthetic catheter assembly, comprising an enhanced anesthetic catheter capable of temperature adjustment, and further comprising a temperature control assembly, wherein the temperature control assembly comprises a temperature display device 6 and a multi-stage temperature control device.

The temperature display device 6 can be connected with the temperature sensor 5, and can further enable the temperature of the catheter body 1 to be visible and controllable. So that the medical staff can accurately know the temperature of the anesthesia catheter and timely adjust the heat conducting wire 2 or the cold conducting wire 3, and the anesthesia catheter is further ensured to be smoothly placed in.

As a preferred embodiment, as shown in fig. 1, the multistage temperature control device further includes a heat source connected to the heat conducting wires and a cold source connected to the cold conducting wires.

Specifically, the heat source 7 can enable the heat conducting wires 2 to heat the catheter body 1, and the cold source 6 can enable the cold conducting wires 3 to conduct cold to the catheter body 1. The heat source 7 and the cold source 6 may be heat-conducting elements for transferring heat to the heat-conducting wires 2 and the cold-conducting wires 3, or may be power-conducting elements for conducting the heat-conducting wires 2 and the cold-conducting wires 3, so that the cold-conducting wires 3 and the heat-conducting wires 2 generate heat. It should be understood that the present application is not limited thereto, and the heating method may be selected according to actual situations, wherein the heating method may be the same as the heating method of the heat source 7 and the cooling method 6, or different heating methods may be selected.

Where not mentioned in this application, can be accomplished using or referencing existing technology.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

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 or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A reinforced anesthetic tube capable of adjusting temperature is characterized by comprising a tube body with an outer wall and an inner wall, wherein the tube body is made of thermoplastic elastomer material;

2. The reinforced temperature-adjustable anesthetic tube as claimed in claim 1, wherein said spiral wire includes a sparse section and a dense section, said sparse section being disposed at an end of said spiral wire near a head end of said catheter body.

3. The temperature-adjustable reinforced anesthetic tube as claimed in claim 2, wherein the sparse section has a gap with the head end of the catheter body, and the axial length of the gap is in a range of 1-5mm.

4. The reinforced anesthetic tube as claimed in claim 1, wherein the heat conducting wire and the cold conducting wire are both disposed spirally along the inner wall, and both the heat conducting wire and the cold conducting wire are copper wires.

5. The temperature-adjustable reinforced anesthetic tube as claimed in claim 4, wherein the spiral diameter of the heat-conducting wire and the spiral diameter of the cold-conducting wire are equal to and larger than the spiral diameter of the spiral wire.

6. The reinforced temperature-adjustable anesthesia catheter of claim 5, wherein the cold-conducting wires and the heat-conducting wires are uniformly staggered along the inner wall to uniformly adjust the temperature of the catheter body.

7. The temperature-adjustable reinforced anesthetic tube as claimed in claim 4, wherein a spiral diameter of the heat-conducting wire is larger than a diameter of the inner wall and smaller than the spiral diameter of the spiral wire; the spiral diameter of the cold-conducting wire is larger than that of the spiral wire and smaller than that of the outer wall.

8. The reinforced temperature-adjustable anesthesia catheter of claim 1, further comprising a temperature sensor disposed at the head end of said catheter body.

9. An anesthesia catheter assembly comprising a temperature-adjustable reinforced anesthesia catheter of any one of claims 1-8, further comprising a temperature control assembly comprising a temperature display device and a multi-stage temperature control device.

10. The anesthesia catheter assembly of claim 9, wherein said multi-stage temperature control device further comprises a heat source connected to said heat conducting wire and a cold source connected to said cold conducting wire.