CN115154844B

CN115154844B - Anesthesia catheter capable of being bent directionally and anesthesia device

Info

Publication number: CN115154844B
Application number: CN202210961871.4A
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: 2023-09-08
Anticipated expiration: 2042-08-11
Also published as: CN115154844A

Abstract

The application provides an anesthetic tube capable of being bent in a directional mode, which comprises a tube body, wherein the inner wall of the tube body is enclosed to form a medicine channel, the tube body is bendable, and the anesthetic tube further comprises: the first temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a high-temperature area is formed on the part of the catheter body containing the first temperature regulating wire; the second temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a low-temperature area is formed at the part of the catheter body accommodating the second temperature regulating wire; the high temperature area is arranged opposite to the low temperature area, the temperature of the first temperature regulating wire is higher than that of the second temperature regulating wire, the catheter body is made of thermoplastic elastic high polymer materials, and the catheter body is enabled to be bent in a directional manner in the implantation process under the temperature change of the first temperature regulating wire and the second temperature regulating wire, so that the anesthesia catheter is prevented from puncturing the dura mater to the greatest extent.

Description

Anesthesia catheter capable of being bent directionally and anesthesia device

Technical Field

The application relates to the technical field of medical anesthesia apparatuses, in particular to an anesthesia catheter capable of being bent in a directional mode and an anesthesia device.

Background

The epidural nerve block is an anesthesia method widely applied clinically, has the advantages of simplicity in operation, low cost, easiness in management in operation, convenience in epidural analgesia after operation and the like, and the main components used in the anesthesia method are anesthesia catheters, wherein the anesthesia catheters are very thin because the anesthesia catheters need to be placed in a narrow epidural space, the outer diameter is generally not more than 1mm, and the anesthesia catheters are small in size and need to be placed in the epidural space and need good axial rigidity, so that the epidural space is usually manufactured by using a high-polymer material with higher hardness, the head end needs to be a blind end, the head end is harder after treatment, the operation is careless, the epidural space is extremely easy to puncture the epidural 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, although the anesthesia catheter in the prior art is provided with a soft head end, in order to keep the anesthesia catheter to be enough rigid in the process of implantation, only a certain hardness can be reduced, but the softness enough to prevent the damage of capillary vessels cannot be made. After the anesthetic tube is perpendicular to the back and is inserted into the epidural space, the direction of the anesthetic tube needs to be changed by 90 degrees, and the anesthetic tube is continuously advanced by about 5cm towards the head direction of the human body. In the process of placing the anesthesia catheter into a human body, the hardness of the anesthesia catheter is influenced by the temperature of the human body, the external temperature and the placement speed, and the specific hardness and the bending direction of the anesthesia catheter cannot be controlled. After the anesthetic tube enters the epidural space, the anesthetic tube cannot move towards the head of a human body according to a preset bending direction, and the situation that the epidural space is pierced or knotted and bent easily occurs.

Accordingly, there is a need for further improvements and enhancements in the art.

Disclosure of Invention

The application provides an anesthetic tube capable of being bent in a directional mode and an anesthetic device, and aims to solve at least one technical problem among the technical problems.

The technical scheme adopted by the application is as follows:

in one aspect, the present application provides an anesthetic tube capable of being bent in a directional manner, comprising a tube body, wherein the inner wall of the tube body encloses a drug channel, the tube body is bendable, and the anesthetic tube further comprises: the first temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a high-temperature area is formed on the part of the catheter body containing the first temperature regulating wire; the second temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a low-temperature area is formed at the part of the catheter body accommodating the second temperature regulating wire; the high temperature area is opposite to the low temperature area, the temperature of the first temperature regulating wire is higher than that of the second temperature regulating wire, the catheter body is made of thermoplastic elastic high polymer materials, and the catheter body has a tendency of bending towards the low temperature area under the temperature change of the first temperature regulating wire and the second temperature regulating wire.

In a preferred embodiment of the present application, the area of the high temperature region formed in the radial cross section of the catheter body is equal to or larger than the area of the low temperature region formed in the low temperature region.

As a preferred embodiment of the present application, the high temperature zone and the low temperature zone are distributed symmetrically along the radial direction of the catheter body.

As a preferred embodiment of the present application, the first temperature-adjusting wire and the second temperature-adjusting wire are both wave-shaped and wound around the high temperature region and the low temperature region, respectively.

As a preferred embodiment of the present application, the first temperature regulating yarn and the second temperature regulating yarn are both columnar.

As a preferred embodiment of the present application, the temperature of the high temperature region is adjustable in the range of 37-42 ℃ and the temperature of the low temperature region is adjustable in the range of 25-30 ℃.

As a preferred embodiment of the application, the anesthetic tube further comprises a first temperature measuring piece arranged at the head end of the first temperature regulating wire and a second temperature measuring piece arranged at the head end of the second temperature regulating wire.

As a preferred embodiment of the application, the axial distance between the head end of the first temperature regulating wire and the head end of the second temperature regulating wire and the head end of the catheter body is 1-5 mm.

As a preferred embodiment of the application, a spiral supporting wire is arranged between the inner wall of the catheter body and the outer wall of the catheter body, and the spiral supporting wire is respectively staggered with the first temperature regulating wire and the second temperature regulating wire.

On the other hand, the application also provides an anesthetic device which is suitable for an anesthetic catheter, the anesthetic device comprises a heat source and a cold source which are arranged outside the catheter body, the heat source is connected with the tail end of the first temperature regulating wire, and the cold source is connected with the tail end of the second temperature regulating wire.

By adopting the technical scheme, the application has the following technical effects:

1. the application provides an anesthetic tube capable of being bent directionally, which is characterized in that a tube body is made of a thermoplastic elastomer, so that the tube body can change the hardness degree under the influence of temperature, and the effect of controlling the bending deformation degree of the tube body is achieved; in addition, as the anesthetic tube enters the epidural space in the process of stretching into the human body for anesthesia, the temperature of the first temperature regulating wire is higher than that of the second temperature regulating wire, so that the tube body generates larger deformation in a high-temperature area where the first temperature regulating wire is arranged and smaller deformation in a low-temperature area where the second temperature regulating wire is arranged; and, with the process of anesthesia pipe imbedding into the human body, adjust anesthesia pipe and make the high temperature district be located the lower part of anesthesia pipe, the low temperature district is located the upper portion of anesthesia pipe, can make the pipe body have the trend of bending deformation to the low temperature district, make the pipe body upwards crooked, can guarantee the directional bending of pipe body to the maximum extent, and then make anesthesia pipe naturally upwards crooked in dura mater department, reduce the oppression of pipe body to the capillary vessel and the nerve of dura mater wall, and can avoid the pipe body to puncture the dura mater arm to the maximum extent.

2. As a preferred embodiment of the application, the high Wen Ouou area formed by the high temperature area is larger than the low temperature area formed by the low temperature area, so that the deformation effect of the catheter body in the high temperature area is more prominent than that in the low temperature area, the bending trend of the catheter body to the low temperature area can be further improved, and the bending effect of the catheter body can be improved to a certain extent.

3. As a preferred embodiment of the application, the axial distance of 1-5mm is arranged between the head end of the first temperature regulating wire and the head end of the second temperature regulating wire and the head end of the catheter body, so that the distance part of the head end of the catheter body can avoid the temperature influence of the first temperature regulating wire and the second temperature regulating wire to the greatest extent, the head end axial distance part of the catheter body can deform by means of the temperature of a human body, the head end of the catheter body is ensured to be always in a soft state to the greatest extent, the damage of the head end of the catheter body to the dura mater of the dura mater can be reduced, on the one hand, the influence of a high temperature area on the head end of the catheter body can be reduced, and the phenomena of excessively soft head end and knotting or bending caused by the too high temperature of the head end of the catheter body can be prevented to a certain extent; on the other hand, the influence of a low-temperature area on the head end of the catheter body can be reduced, and the situation that the head end hardness is too high and the dura mater inner cavity is punctured due to the fact that the temperature of the head end of the catheter body is too low is prevented to a certain extent.

4. As a preferred implementation mode of the application, the spiral supporting wire is arranged between the inner wall and the outer wall of the catheter body, so that the supporting performance of the catheter body can be improved to a certain extent, and the situation that the catheter body is not flattened when extending into a human body can be ensured to the greatest extent; and, because the anesthesia catheter itself has flexibility, when the anesthesia catheter is in the state of accomodating, can ensure the catheter body in the same maximum extent can not produce the condition of flattening because of external factor, and then can ensure the unobstructed of medicine passageway.

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 specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of an anesthetic tube and an anesthetic device capable of being bent in a directional manner;

FIG. 2 is a schematic view of a first anesthetic tube according to the present application;

FIG. 3 is a schematic view of a second anesthetic tube according to the present application;

FIG. 4 is a schematic view of a third anesthetic tube according to the present application;

FIG. 5 is a schematic view of a fourth anesthetic tube according to the present application;

FIG. 6 is a schematic view of a fifth anesthetic tube according to the present application;

fig. 7 is a schematic structural view of a spiral supporting wire and an anesthetic catheter body according to the present application.

Reference numerals:

100 catheter body, 101 medicine channel, 102 first temperature regulating wire, 1021 high temperature region, 103 second temperature regulating wire, 1031 low temperature region, 104 first temperature measuring piece, 105 second temperature measuring piece, 106 spiral supporting wire;

200 anesthesia devices, 201 heat sources, 202 cold sources and 203 temperature display devices.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

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 to the specific embodiments disclosed below.

In addition, in the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," 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 present application. In this specification, schematic representations of the above terms are not necessarily directed 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.

As shown in fig. 1, the present application provides an anesthetic tube capable of being directionally bent, comprising a tube body 100, wherein the inner wall of the tube body 100 encloses a medicine channel 101, and the tube body 100 is bendable; the anesthetic tube further comprises a first temperature regulating wire 102 and a second temperature regulating wire 103, the first temperature regulating wire 102 extends along the tube body 100 and is arranged between the inner wall and the outer wall of the tube body 100, and a high temperature area 1021 is formed at the part of the tube body 100 accommodating the first temperature regulating wire 102; the second temperature regulating wire 103 extends along the catheter body 100 and is disposed between an inner wall and an outer wall of the catheter body 100, and a low temperature region 1031 is formed at a portion of the catheter body 100 accommodating the second temperature regulating wire 103.

The high temperature area 1021 is opposite to the low temperature area 1031, the temperature of the first temperature adjusting wire 102 is higher than the temperature of the second temperature adjusting wire 103, the catheter body 100 may be made of thermoplastic elastic polymer material, the deformation generated in the high temperature area 1021 is larger under the temperature change of the first temperature adjusting wire 102 and the second temperature adjusting wire 103, the deformation generated in the low temperature area 1031 is smaller, and the catheter body 100 has a tendency of bending towards the low temperature area 1031.

It will be appreciated that the "high temperature" and "low temperature" of the high temperature region 1021 and the low temperature region 1031 are described with respect to the temperature of the first temperature adjusting wire 102 and the temperature of the second temperature adjusting wire 103, a temperature difference exists between the high temperature region 1021 and the low temperature region 1031, and the highest temperature of the high temperature region 1021 may be higher than the temperature of the human body, and the temperature of the low temperature region 1031 may be lower than the lowest temperature of the human body but not excessively deviate from the normal temperature of the human body, so as to reduce the influence of the excessive or excessively low temperature of the anesthetic tube on the human body and the influence of the temperature of the human body on the flexibility of the anesthetic tube body to some extent; as an alternative embodiment of the present application, the temperature of the high temperature region 1021 is adjustable within a range of 37 to 42 ℃, and the temperature of the low temperature region 1031 is adjustable within a range of 25 to 35 ℃.

It should be noted that, in the anesthetic process, the catheter body 100 needs to bend toward the head of the human body through temperature adjustment after penetrating into the dura mater cavity of the human body, so that, for convenience in describing the subsequent structure of the present application, the present application is based on the angle of placing the catheter body 100 into the epidermis of the human body, the upper side of the catheter body 100 is the low temperature region 1031, and the lower side of the catheter body 100 is the high temperature region 1021, which is a specific embodiment of the present application, so that the catheter body 100 can be bent upward in an oriented manner, and thus description of the subsequent other structures is performed.

As an optional embodiment of the present application, the first temperature adjusting wire 102 and the second temperature adjusting wire 103 may be made of copper wires or other materials with high heat conduction efficiency, so as to improve the heat conduction performance of the first temperature adjusting wire 102 and the second temperature adjusting wire 103, further improve the sensitivity of the catheter body 100 to temperature, and improve the deformation efficiency of the anesthetic catheter during temperature change.

As shown in fig. 2, as a specific embodiment of the present application, the high temperature region 1021 and the low temperature region 1031 are symmetrically distributed along the radial direction of the catheter body 100, so that the area formed by the high temperature region 1021 is the same as the area formed by the low temperature region 1031, and the deformation of the catheter body 100 can be more balanced.

As shown in fig. 3, as another embodiment of the present application, in the radial cross section of the catheter body 100, the area formed by the high temperature region 1021 is larger than the area formed by the low temperature region 1031, so that the deformation degree of the catheter body 100 in the high temperature region 1021 is larger, the deformation degree in the low temperature region 1031 is smaller, and the bending degree of the catheter body 100 towards the low temperature region 1031 can be further improved.

Further, the shape and the number of the first temperature adjusting wires 102 and the second temperature adjusting wires 103 are not particularly limited, and the present application may be provided as long as the structure can maximally secure the bending of the catheter body 100 toward the low temperature region 1031; for example, as shown in fig. 1-3, the first temperature-adjusting wire 102 and the second temperature-adjusting wire 103 are both in waveforms and are respectively wound around the high temperature region 1021 and the low temperature region 1031; or, as shown in fig. 4 to 6, the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are columnar and extend along the direction of the catheter body; moreover, the arrangement manners of the first temperature adjusting wire 102 and the second temperature adjusting wire 103 may be applicable to the above two embodiments.

It can be understood that, the different shapes of the first temperature adjusting wire 102 and the second temperature adjusting wire 103 may cause the arrangement mode to adaptively change, as shown in fig. 1-3, when the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are in waveforms, the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are respectively wound around the high temperature area 1021 and the low temperature area 1031; as shown in fig. 4-6, when the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are cylindrical, the axes of the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are parallel to the axis of the catheter body 100, and are disposed in the high temperature area 1021 and the low temperature area 1031, respectively.

Further, when the areas of the high temperature region 1021 and the low temperature region 1031 are defined, the shapes of the first temperature adjusting wire 102 and the second temperature adjusting wire 103 are different, which also causes the formation of the areas of the high temperature region 1021 and the low temperature region 1031 to be changed. For example: when the first temperature-adjusting wire 102 and the second temperature-adjusting wire 103 are in waveforms, as shown in fig. 2, the areas of the high temperature area 1021 and the low temperature area 1031 are the same, and the coverage areas of the first temperature-adjusting wire 102 and the second temperature-adjusting wire 103 are the same; as shown in fig. 3, if the area of the high temperature region 1021 is larger than the area of the low temperature region 1031, the coverage area of the first temperature adjusting wire 102 is larger than the coverage area of the second temperature adjusting wire 103. When the first temperature-adjusting wires 102 and the second temperature-adjusting wires 103 are cylindrical, as shown in fig. 4 and 5, the areas of the high temperature area 1021 and the low temperature area 1031 are the same, and the number of the first temperature-adjusting wires 102 is the same as the number of the first temperature-adjusting wires 103; as shown in fig. 6, if the area of the high temperature region 1021 is larger than the area of the low temperature region 1031, the number of the first temperature adjusting wires 102 is larger than the number of the second temperature adjusting wires 103.

As a preferred embodiment of the present application, as shown in fig. 1, the anesthetic tube may further include a first temperature measuring part 104 disposed at a head end of the first temperature adjusting wire 102 and a second temperature measuring part 105 disposed at a head end of the second temperature adjusting wire 103; the first temperature measuring member 104 may be used to detect a temperature change of the high temperature region 1021, and the second temperature measuring member 105 may be used to detect a temperature change of the low temperature region 1031. The first temperature measuring member 104 and the second temperature measuring member 105 may be temperature sensors, so as to detect the temperatures of the high temperature area 1021 and the low temperature area 1031.

Optionally, an axial distance of 1-5mm may be provided between the head end of the first temperature regulating wire 102 and the head end of the second temperature regulating wire 103 and the head end of the catheter body 100, so that the head end of the catheter body 100 may be kept soft at the temperature of the human body; it will be appreciated that the first temperature regulating wire 102 and the second temperature regulating wire 103 do not extend into the axial space, so as to reduce the influence of the external temperature on the head end of the catheter body 100.

Further, a spiral supporting wire 106 is further disposed between the inner wall of the catheter body 100 and the outer wall of the catheter body 100, and the spiral supporting wire is respectively staggered with the first temperature adjusting wire 102 and the second temperature adjusting wire 103.

It will be appreciated that, according to the different arrangement manners of the first temperature adjusting wire 102 and the second temperature adjusting wire 103, the arrangement manner of the spiral supporting wire 106 may also be adaptively changed, and the specific arrangement manner is shown in fig. 7.

The number of the spiral supporting wires 106 is not particularly limited, and the spiral supporting wires can be arranged in a staggered manner with the first temperature adjusting wires 102 and the second temperature adjusting wires 103; the spiral supporting wire 106 can support the catheter body to a certain extent to the greatest extent, and can ensure the catheter body to be flattened to the greatest extent, so that the smoothness of the medicine channel 101 can be ensured.

The application also provides an anesthetic device 200, which is suitable for the anesthetic tube, wherein the anesthetic device 200 comprises a heat source 201 and a cold source 202 which are arranged outside the tube body 100, the heat source 201 is connected with the tail end of the first temperature regulating wire 102, and the cold source 202 is connected with the tail end of the second temperature regulating wire 103.

It will be appreciated that the heat source 201 may be electrically heated by an electrical coil to heat the first temperature adjusting wire 102, and the heat sink 202 may also be electrically heated by an electrical coil to control the temperature, but the temperature provided by the heat source is less than the temperature provided by the heat source 201.

Further, the anesthesia apparatus 200 may further be provided with a temperature display device 203, where the temperature display device 203 may be disposed outside the catheter body 100 and may be connected to the heat source 201, the cold source 202, the first temperature measuring member 104 and the second temperature measuring member 105, respectively, so as to detect the temperatures of the high temperature area 1021 and the low temperature area 1031 in real time, and may display the temperatures of the heat source 201 and the cold source 202.

It should be noted that, the temperature display device 203 may be connected with the heat source 201, the cold source 202, the first temperature measuring member 104, and the second temperature measuring member 105 in a wireless manner, so that the connecting wires inside the catheter body 100 may be reduced, and the installation is convenient and the processing cost may be saved.

Specifically, the temperature display device 203 may include an image display and a temperature adjustment control, so that the temperature display device 203 may not only display the temperatures in real time through the image display, but also adjust the temperatures of the heat source 201 and the cold source 202 through the temperature adjustment control, and when the temperature display device 203 displays that the temperatures of the high temperature region 1021 and the low temperature region 1031 deviate from a set temperature range, the temperature display device 203 may adjust the temperatures output by the heat source 201 and the cold source 202 through the temperature adjustment control, thereby changing the temperatures of the high temperature region 1021 and the low temperature region 1031, and improving the intelligentization degree of the anesthesia device; in addition, since the temperature display device 203 can display the real-time temperatures of the heat source 201 and the cold source 202, the temperature can be adjusted more precisely according to the indication of the temperature display device 203.

The application can be realized by adopting or referring to the prior art at the places which are not described in the application.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.

Claims

1. An anesthetic tube capable of being bent in an oriented manner, comprising a tube body, wherein the inner wall of the tube body encloses a drug channel, and the tube body is bendable, and the anesthetic tube further comprises:

the first temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a high-temperature area is formed in the part of the catheter body accommodating the first temperature regulating wire;

the second temperature regulating wire extends along the catheter body and is arranged between the inner wall and the outer wall of the catheter body, and a low-temperature area is formed in the part of the catheter body accommodating the second temperature regulating wire;

the temperature of the first temperature regulating wire is higher than that of the second temperature regulating wire, the catheter body is made of thermoplastic elastomer material, and the catheter body has a tendency to bend towards the low temperature region under the temperature change of the first temperature regulating wire and the second temperature regulating wire;

the temperature adjustable range of the high temperature area is 37-42 ℃; the temperature of the low temperature area can be adjusted to 25-30 ℃.

2. An anesthetic tube as recited in claim 1, wherein said high temperature region forms a high temperature region area equal to or greater than a low temperature region area formed by said low temperature region in a radial cross section of said tube body.

3. An directionally bendable anesthetic tube as claimed in claim 2, wherein the high temperature zone and the low temperature zone are radially symmetrically distributed along the tube body.

4. An anesthetic tube capable of directional bending as recited in claim 2 or 3, wherein said first temperature regulating wire and said second temperature regulating wire are each wave-shaped and are respectively wound around said high temperature region and said low temperature region.

5. An anesthetic tube capable of directional bending as recited in claim 2 or 3, wherein said first temperature regulating wire and said second temperature regulating wire are each columnar.

6. The directionally bendable anesthetic tube of claim 1, further comprising a first temperature measurement member disposed at the first temperature regulating filament end and a second temperature measurement member disposed at the second temperature regulating filament end.

7. The directionally bendable anesthetic tube of claim 6, wherein the head ends of the first and second temperature adjusting wires each have an axial spacing of 1-5mm from the head end of the tube body.

8. The anesthesia catheter capable of being bent in an oriented mode according to claim 7, wherein a spiral supporting wire is further arranged between the inner wall of the catheter body and the outer wall of the catheter body, and the spiral supporting wire is arranged in a staggered mode with the first temperature adjusting wire and the second temperature adjusting wire respectively.

9. An anaesthetic apparatus having an anaesthetic catheter as claimed in any one of claims 1 to 7 wherein the anaesthetic apparatus comprises a heat source and a cold source arranged outside the catheter body, the heat source being connected to the end of the first temperature regulating wire and the cold source being connected to the end of the second temperature regulating wire.