Constant-temperature liquid medicine infusion heating device for anesthesiology department

Abstract

The invention relates to the field of medical equipment, and discloses an anesthesiology department liquid medicine constant-temperature infusion heating device which comprises a heating cylinder, a bottom pipe is installed at the bottom end of the heating cylinder, a heating coil is installed on the inner wall of the heating cylinder, a control panel is installed on one side of the heating cylinder, and the control panel is used for controlling the heating temperature of the heating coil. A bottom heat preservation mechanism is installed at the bottom end of the bottom pipe and comprises a leather strip heat preservation assembly arranged below the bottom pipe, end fixing assemblies are installed at the upper end and the lower end of the leather strip heat preservation assembly correspondingly, and each end fixing assembly comprises a top fixing piece located at the top end of the leather strip heat preservation assembly and a bottom fixing piece located at the bottom end of the leather strip heat preservation assembly. According to the drip cup, the heating coil is arranged on the inner side of the heating cylinder, constant-temperature heating can be conducted on liquid medicine in the drip cup, the leather strap heat preservation assembly is arranged at the bottom of the heating cylinder, heat preservation pads are arranged on the inner side of the fixed heat preservation soft sleeve and the inner side of the movable heat preservation soft sleeve, and heat preservation can be conducted on an infusion leather strap.

Description

Technical Field

[0001] This invention belongs to the field of medical equipment, specifically a constant temperature infusion heating device for anesthetic drugs. Background Technology

[0002] In clinical anesthesia and surgery, intravenous infusion is a core method for maintaining vital signs, delivering anesthetic drugs, replenishing blood volume, and providing nutritional support. Its safety and stability directly affect the success of the surgery and the patient's postoperative recovery. Under anesthesia, the patient's hypothalamic thermoregulatory center is suppressed, the metabolic rate decreases, and heat production is reduced. Simultaneously, factors such as surgical incision exposure, the low-temperature environment of the operating room (usually controlled at 21-22°C), body cavity irrigation, and large-volume infusion can easily lead to perioperative hypothermia. During infusion, the medication needs to be heated to a constant temperature. Currently, heating methods generally involve installing a heating device on the outside of the infusion set's drip chamber. Since the medication in the bag needs to be concentrated in the drip chamber, heating the drip chamber effectively heats the medication about to flow into the body. However, the following drawbacks still exist: Because there is an infusion tubing between the drip chamber and the indwelling needle, when the medicine is heated and flows through the infusion tubing, heat loss is easily caused, resulting in a drop in the temperature of the medicine and affecting the infusion effect. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a constant temperature infusion heating device for anesthetic drugs, which effectively solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a constant temperature infusion heating device for anesthesia drugs, including a heating cylinder, a bottom tube installed at the bottom end of the heating cylinder, a heating coil installed on the inner wall of the heating cylinder, a control panel installed on one side of the heating cylinder, the control panel being used to control the heating temperature of the heating coil, and a bottom insulation mechanism installed at the bottom end of the bottom tube. The bottom insulation mechanism includes a rubber strip insulation component located below the bottom tube. Both the upper and lower ends of the rubber strip insulation component are equipped with end fixing components. The end fixing components include a top fixing member located at the top of the rubber strip insulation component and a bottom fixing member located at the bottom of the rubber strip insulation component. The heating cylinder is used to heat the drip chamber of the infusion set, the rubber strip insulation component is used to keep the infusion rubber strip between the drip chamber and the indwelling needle warm, and the two end fixing components respectively position the two ends of the infusion rubber strip between the drip chamber and the indwelling needle.

[0005] Preferably, the rubber strip insulation component includes a fixed insulation soft sleeve, a limiting groove is formed inside the fixed insulation soft sleeve, a bottom groove is formed at the bottom end of the limiting groove, the bottom groove extends to the bottom of the fixed insulation soft sleeve, a limiting ring is movably installed inside the limiting groove, a movable insulation soft sleeve is fixedly installed at the bottom end of the limiting ring, and the movable insulation soft sleeve passes through the bottom groove to the bottom of the fixed insulation soft sleeve.

[0006] Preferably, both the inner wall of the fixed insulating sleeve and the inner wall of the movable insulating sleeve are equipped with insulating pads.

[0007] Preferably, the end fixing assembly includes an end ring, an inner side of which is provided with a mounting groove, an annular airbag is installed inside the mounting groove, a temperature sensing probe is installed on the inner outer wall of the annular airbag, the temperature sensing probe is connected to the control panel, and an air inlet expansion member is installed on the outer side of the end ring. The end ring on the top fixing member is fixedly installed on the top of the fixed insulation soft sleeve, and the end ring on the bottom fixing member is fixedly installed on the bottom of the movable insulation soft sleeve.

[0008] Preferably, the air intake expansion component includes an arc-shaped air box fixedly installed on the end ring in the circumferential direction. One end of the arc-shaped air box is provided with an opening, and a connecting groove is provided inside the end ring. One end of the connecting groove is connected to the inner cavity of the annular air bag, and the other end of the connecting groove is connected to the inner cavity of the arc-shaped air box away from its opening. An air propulsion component is installed inside the arc-shaped air box.

[0009] Preferably, the air-driven component includes a piston block installed in the inner cavity of the arc-shaped air box near its opening end. The outer wall of the piston block is in close contact with the inner wall of the arc-shaped air box. An arc-shaped plate is installed at one end of the piston block. The arc-shaped plate is located on the side of the end ring away from the arc-shaped air box. A push plate is installed at the end of the arc-shaped plate away from the piston block.

[0010] Preferably, the arc-shaped plate is provided with a guide groove, and a guide positioning element is provided on the inner side of the guide groove. The side of the arc-shaped plate away from the end ring is provided with positioning grooves at equal intervals.

[0011] Preferably, the guide positioning component includes a guide block disposed inside the guide groove. The guide block is fixedly installed on the side wall of the end ring. The upper and lower sides of the guide block are in contact with the inner top wall and inner bottom wall of the guide groove, respectively. Two guide plates are installed at the top of the guide block. An arc-shaped plate is located between the two guide plates. A snap-fit ​​fixing component is installed on the guide plate away from the end ring.

[0012] Preferably, the snap-fit ​​fastener includes a fixed cylinder fixedly installed on a guide plate on the side away from the end ring. A positioning rod is movably installed inside the fixed cylinder. One end of the positioning rod passes through the area between the two guide plates and is snapped into one of the positioning grooves. A spring is fixedly installed at the end of the positioning rod away from the end ring. One end of the spring is fixedly connected to the inner wall of the end of the fixed cylinder. A pull rod is fixedly installed at the end of the positioning rod away from the end ring. One end of the pull rod passes through the outside of the fixed cylinder.

[0013] Compared with the prior art, the beneficial effects of the present invention are: This invention features a heating coil inside the heating cylinder, which can maintain a constant temperature for heating the medicine in the drip chamber. The bottom of the heating cylinder is equipped with a rubber band insulation component, where both the inner sides of the fixed and movable insulation sleeves are lined with insulation pads to keep the infusion rubber band warm. The relative positions of the fixed and movable insulation sleeves can be adjusted according to the length of the infusion rubber band, facilitating insulation of infusion rubber bands of different lengths and preventing excessive heat loss of the heated medicine as it flows through the infusion rubber band. This invention features end-fixing components installed at the ends of a fixed and movable insulating sleeve. By inflating a ring-shaped air bladder, the two end-fixing components are respectively installed at both ends of the infusion strip between the drip chamber and the indwelling needle. This allows the fixed and movable insulating sleeves to be fixed after their relative positions are adjusted, ensuring the insulation effect. This invention uses a connecting groove between an arc-shaped air box and an annular air bladder to push the piston block to push the air in the arc-shaped air box into the annular air bladder, which facilitates fixation. The expansion of the annular air bladder is controlled by the engagement position of the positioning rod and the positioning groove, which facilitates the heat preservation installation of infusion strips of different diameters. This invention features temperature sensing probes installed on the inner and outer walls of the annular airbag. These two probes can monitor the temperature of the medicine flowing out of the drip chamber and the temperature of the medicine flowing into the indwelling needle. This allows for the detection of the temperature loss difference of the medicine as it flows through the infusion tubing between the drip chamber and the indwelling needle, thus facilitating the adjustment of the heating temperature at the drip chamber. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the anesthesia drug constant temperature infusion heating device of the present invention; Figure 2 This is a schematic diagram of the internal structure of the heating cylinder of the present invention; Figure 3This is a schematic diagram of the bottom insulation mechanism of the present invention; Figure 4 This is a schematic diagram of the structure of the leather strip insulation component of the present invention; Figure 5 This is a schematic diagram of the end fixing component structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the end ring of the present invention; Figure 7 This is a schematic diagram of the intake expansion component of the present invention; Figure 8 This is a schematic diagram of the air-driven component structure of the present invention; Figure 9 This is a schematic diagram of the guide and positioning component structure of the present invention; In the diagram: 1. Heating cylinder; 2. Bottom tube; 3. Heating coil; 4. Control panel; 5. Bottom insulation mechanism; 501. Leather strip insulation assembly; 5011. Fixed insulation sleeve; 5012. Limiting groove; 5013. Bottom groove; 5014. Limiting ring; 5015. Movable insulation sleeve; 5016. Insulation pad; 502. End fixing assembly; 502a. Top fixing component; 502b. Bottom fixing component; 5021. End ring; 5022. Mounting groove; 5023. Ring 5024. Airbag; 5025. Temperature sensor probe; 5026. Intake expansion component; 50251. Arc-shaped air box; 50252. Connecting groove; 50253. Piston block; 50254. Arc-shaped plate; 50255. Push plate; 50256. Guide groove; 50257. Positioning groove; 5026. Guide positioning component; 50261. Guide block; 50262. Guide plate; 50263. Fixed cylinder; 50264. Positioning rod; 50265. Spring; 50266. Pull rod. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] Example 1, by Figures 1-9 The present invention relates to a constant temperature infusion heating device for anesthetic drugs, comprising a heating cylinder 1, a bottom tube 2 installed at the bottom end of the heating cylinder 1, a heating coil 3 installed on the inner wall of the heating cylinder 1, a control panel 4 installed on one side of the heating cylinder 1, the control panel 4 being used to control the heating temperature of the heating coil 3, and being able to heat the drug solution in the drip chamber at a constant temperature, and a bottom heat preservation mechanism 5 installed at the bottom end of the bottom tube 2.

[0018] The bottom insulation mechanism 5 includes a leather strip insulation component 501 disposed below the bottom tube 2. Both the upper and lower ends of the leather strip insulation component 501 are equipped with end fixing components 502. The end fixing components 502 include a top fixing member 502a located at the top of the leather strip insulation component 501 and a bottom fixing member 502b located at the bottom of the leather strip insulation component 501. The heating cylinder 1 is used to heat the drip chamber of the infusion set, the rubber strip insulation component 501 is used to insulate the infusion rubber strip between the drip chamber and the indwelling needle, and the two end fixing components 502 respectively position the two ends of the infusion rubber strip between the drip chamber and the indwelling needle.

[0019] The thermal insulation component 501 includes a fixed thermal insulation sleeve 5011. A limiting groove 5012 is formed inside the fixed thermal insulation sleeve 5011. A bottom groove 5013 is formed at the bottom end of the limiting groove 5012, extending to the bottom of the fixed thermal insulation sleeve 5011. A limiting ring 5014 is movably installed inside the limiting groove 5012. A movable thermal insulation sleeve 5015 is fixedly installed at the bottom end of the limiting ring 5014, passing through the bottom groove 5013 to the bottom of the fixed thermal insulation sleeve 5011. The inner walls of both the fixed insulating soft sleeve 5011 and the movable insulating soft sleeve 5015 are equipped with insulating pads 5016. The inner sides of both the fixed insulating soft sleeve 5011 and the movable insulating soft sleeve 5015 are provided with insulating pads 5016, which can keep the infusion strip warm. The relative positions of the fixed insulating soft sleeve 5011 and the movable insulating soft sleeve 5015 can be adjusted according to the length of the infusion strip, which is convenient for keeping infusion strips of different lengths warm and prevents excessive heat loss when the medicine is heated and flows through the infusion strip.

[0020] The end fixing component 502 includes an end ring 5021. An installation groove 5022 is formed on the inner side of the end ring 5021. An annular airbag 5023 is installed inside the installation groove 5022. The end fixing components 502 are respectively installed at the ends of the fixed insulating sleeve 5011 and the movable insulating sleeve 5015. By inflating the annular airbag 5023, the two end fixing components 502 are respectively installed at both ends of the infusion strip between the drip chamber and the indwelling needle. This allows for the adjustment and fixation of the relative positions of the fixed insulating sleeve 5011 and the movable insulating sleeve 5015, ensuring the insulation effect. A temperature sensing probe 5024 is installed on the inner outer wall of the annular airbag 5023. The temperature sensing probe 5024 is connected to the control... The control panel 4 is connected to the signal. Temperature sensing probes 5024 are installed on the inner outer wall of the annular airbag 5023. The two temperature sensing probes 5024 can monitor the temperature of the medicine flowing out of the drip chamber and the temperature of the medicine flowing into the indwelling needle, thereby detecting the temperature loss difference of the medicine flowing in the infusion strip between the drip chamber and the indwelling needle, so as to facilitate the adjustment of the heating temperature at the drip chamber position. An air inlet expansion member 5025 is installed on the outer side of the end ring 5021. The end ring 5021 on the top fixing member 502a is fixedly installed on the top of the fixed heat insulation soft sleeve 5011, and the end ring 5021 on the bottom fixing member 502b is fixedly installed on the bottom of the movable heat insulation soft sleeve 5015.

[0021] The intake expansion component 5025 includes an arc-shaped air box 50251 fixedly installed on the circumferential direction of the end ring 5021. One end of the arc-shaped air box 50251 has an opening, and a connecting groove 50252 is formed inside the end ring 5021. One end of the connecting groove 50252 communicates with the inner cavity of the annular air bladder 5023, and the other end of the connecting groove 50252 communicates with the inner cavity of the arc-shaped air box 50251 away from its opening. An air-driven component is installed inside the arc-shaped air box 50251, and the air-driven component includes a piston block 502 installed in the inner cavity of the arc-shaped air box 50251 near its opening. 53. The outer wall of the piston block 50253 is in close contact with the inner wall of the arc-shaped air box 50251. An arc-shaped plate 50254 is installed at one end of the piston block 50253. The arc-shaped plate 50254 is located on the side of the end ring 5021 away from the arc-shaped air box 50251. A push plate 50255 is installed at the end of the arc-shaped plate 50254 away from the piston block 50253. A guide groove 50256 is provided on the arc-shaped plate 50254. A guide positioning component 5026 is provided on the inner side of the guide groove 50256. A positioning groove 50257 is provided at equal intervals on the side of the arc-shaped plate 50254 away from the end ring 5021.

[0022] The guide positioning component 5026 includes a guide block 50261 disposed inside the guide groove 50256. The guide block 50261 is fixedly installed on the side wall of the end ring 5021. The upper and lower sides of the guide block 50261 contact the inner top wall and inner bottom wall of the guide groove 50256, respectively. Two guide plates 50262 are installed on the top of the guide block 50261. An arc-shaped plate 50254 is located between the two guide plates 50262. A snap-fit ​​fastener is installed on the guide plate 50262 on the side away from the end ring 5021. The snap-fit ​​fastener includes a fixing cylinder 50263 fixedly installed on the guide plate 50262 on the side away from the end ring 5021. A positioning rod 50264 is movably installed inside the fixing cylinder 50263. One end of the positioning rod 50264 extends through the area between the two guide plates 50262. 264 is inserted into one of the positioning grooves 50257. A spring 50265 is fixedly installed at the end of the positioning rod 50264 away from the end ring 5021. One end of the spring 50265 is fixedly connected to the inner wall of the end of the fixed cylinder 50263. A pull rod 50266 is fixedly installed at the end of the positioning rod 50264 away from the end ring 5021. One end of the pull rod 50266 extends through the outside of the fixed cylinder 50263. A connecting groove 50252 is set between the arc-shaped air box 50251 and the annular air bladder 5023. The piston block 50253 is pushed to push the air in the arc-shaped air box 50251 into the annular air bladder 5023 for easy fixation. The expansion of the annular air bladder 5023 is controlled by the engagement position of the positioning rod 50264 and the positioning groove 50257, which facilitates the heat preservation installation of infusion strips of different diameters.

[0023] Working principle: When in use, insert the infusion strip located below the drip chamber on the infusion set through the bottom tube 2 into the inside of the fixed heat preservation soft sleeve 5011, and then pass it out through the end ring 5021 of the bottom fixing part 502b at the bottom. Then connect the indwelling needle to the end of the infusion strip, and then put the drip chamber into the heating cylinder 1. Then, adjust the length of the infusion strip insulation component 501 according to the length of the infusion strip between the drip chamber and the indwelling needle. Align the end ring 5021 on the top fixing member 502a with the end of the infusion strip near the drip chamber. Then, pull the bottom fixing member 502b downward, thereby pulling the movable insulation sleeve 5015 downward until the end ring 5021 on the bottom fixing member 502b aligns with the end of the infusion strip near the indwelling needle. Then, the two end fixing components 502 are operated. During operation, the pull rod 50266 is pulled outward, thereby pulling the positioning rod 50264 away from the positioning groove 50257. Then, the piston block 50253 is pushed towards the side of the arc-shaped air box 50251 by the push plate 50255, thereby pushing the piston block 50253 towards the side of the connecting groove 50252, thereby pushing the air inside the arc-shaped air box 50251 into the annular air bag 5023, causing the annular air bag 5023 to expand and press the two ends of the infusion strip together, thereby pressing and fixing the end fixing component 502 to the end of the infusion strip. On the one hand, since the two end fixing components 502 are fixed to the two ends of the infusion strip respectively, the positions of the fixed heat insulation soft sleeve 5011 and the movable heat insulation soft sleeve 5015 are fixed, and the inner side of the fixed heat insulation soft sleeve 5011 and the inner side of the movable heat insulation soft sleeve 5015 are provided with heat insulation pads 5016, so as to keep the infusion strips of different lengths between the drip chamber and the indwelling needle warm; On the other hand, when the annular airbag 5023 expands and the inner outer wall of the annular airbag 5023 is pressed tightly against the outer wall of the infusion strip, the annular airbag 5023 is elastic and engages the positioning rod 50264 with the positioning groove 50257 at the corresponding position, thus facilitating the external installation of infusion strips of different diameters. Finally, since temperature sensing probes 5024 are provided on the inner and outer walls of the annular airbag 5023, and the two temperature sensing probes 5024 transmit the detected temperature to the control panel 4, the temperature of the medicine flowing out of the drip chamber and the temperature of the medicine flowing into the indwelling needle can be monitored, thereby detecting the temperature loss difference when the medicine flows in the infusion strip between the drip chamber and the indwelling needle, thus facilitating the adjustment of the heating temperature at the drip chamber position; During use, the temperature of the heating coil 3 is controlled by the control panel 4. The drip chamber is installed inside the heating cylinder 1, so that after the heating coil 3 is energized and heated, it heats the drip chamber and the medicine inside it. The heated medicine enters the infusion strip and then enters the human vein through the indwelling needle.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A constant temperature infusion heating device for anesthesia drugs, comprising a heating cylinder (1), characterized in that: The bottom end of the heating cylinder (1) is equipped with a bottom tube (2), the inner wall of the heating cylinder (1) is equipped with a heating coil (3), a control panel (4) is installed on one side of the heating cylinder (1), the control panel (4) is used to control the heating temperature of the heating coil (3), and the bottom end of the bottom tube (2) is equipped with a bottom heat preservation mechanism (5). The bottom insulation mechanism (5) includes a leather strip insulation component (501) disposed below the bottom tube (2). Both the upper and lower ends of the leather strip insulation component (501) are equipped with end fixing components (502). The end fixing components (502) include a top fixing member (502a) located at the top of the leather strip insulation component (501) and a bottom fixing member (502b) located at the bottom of the leather strip insulation component (501). The heating cylinder (1) is used to heat the drip chamber of the infusion set, the rubber strip insulation component (501) is used to insulate the infusion rubber strip between the drip chamber and the indwelling needle, and the two end fixing components (502) respectively position the two ends of the infusion rubber strip between the drip chamber and the indwelling needle.

2. The constant temperature infusion heating device for anesthetic drugs according to claim 1, characterized in that: The heat insulation component (501) includes a fixed heat insulation sleeve (5011), a limiting groove (5012) is provided inside the fixed heat insulation sleeve (5011), a bottom groove (5013) is provided at the bottom end of the limiting groove (5012), the bottom groove (5013) extends to the bottom of the fixed heat insulation sleeve (5011), a limiting ring (5014) is movably installed inside the limiting groove (5012), a movable heat insulation sleeve (5015) is fixedly installed at the bottom end of the limiting ring (5014), and the movable heat insulation sleeve (5015) passes through the bottom groove (5013) to the bottom of the fixed heat insulation sleeve (5011).

3. The constant temperature infusion heating device for anesthetic drugs according to claim 2, characterized in that: Insulation pads (5016) are installed on the inner wall of both the fixed insulation sleeve (5011) and the inner wall of the movable insulation sleeve (5015).

4. The constant temperature infusion heating device for anesthetic drugs according to claim 2, characterized in that: The end fixing assembly (502) includes an end ring (5021), an installation groove (5022) is provided on the inner side of the end ring (5021), an annular airbag (5023) is installed inside the installation groove (5022), a temperature sensing probe (5024) is installed on the inner outer wall of the annular airbag (5023), the temperature sensing probe (5024) is connected to the control panel (4) by signal, and an air inlet expansion member (5025) is installed on the outer side of the end ring (5021). The end ring (5021) on the top fixing member (502a) is fixedly installed on the top of the fixed thermal insulation soft sleeve (5011), and the end ring (5021) on the bottom fixing member (502b) is fixedly installed on the bottom of the movable thermal insulation soft sleeve (5015).

5. The constant temperature infusion heating device for anesthetic drugs according to claim 4, characterized in that: The air intake expansion component (5025) includes an arc-shaped air box (50251) fixedly installed on the circumferential direction of the end ring (5021). One end of the arc-shaped air box (50251) is provided with an opening. A connecting groove (50252) is provided inside the end ring (5021). One end of the connecting groove (50252) is connected to the inner cavity of the annular air bag (5023). The other end of the connecting groove (50252) is connected to the inner cavity of the arc-shaped air box (50251) away from its opening. An air propulsion component is installed inside the arc-shaped air box (50251).

6. The constant temperature infusion heating device for anesthetic drugs according to claim 5, characterized in that: The air-driven component includes a piston block (50253) installed in the inner cavity of the arc-shaped air box (50251) near its opening. The outer wall of the piston block (50253) is in close contact with the inner wall of the arc-shaped air box (50251). An arc-shaped plate (50254) is installed at one end of the piston block (50253). The arc-shaped plate (50254) is located on the side of the end ring (5021) away from the arc-shaped air box (50251). A push plate (50255) is installed at the end of the arc-shaped plate (50254) away from the piston block (50253).

7. The constant temperature infusion heating device for anesthetic drugs according to claim 6, characterized in that: The arc plate (50254) is provided with a guide groove (50256), and a guide positioning component (5026) is provided on the inner side of the guide groove (50256). The arc plate (50254) is provided with positioning grooves (50257) at equal intervals on the side away from the end ring (5021).

8. The constant temperature infusion heating device for anesthetic drugs according to claim 7, characterized in that: The guide positioning component (5026) includes a guide block (50261) disposed inside the guide groove (50256). The guide block (50261) is fixedly installed on the side wall of the end ring (5021). The upper and lower sides of the guide block (50261) are in contact with the inner top wall and inner bottom wall of the guide groove (50256) respectively. Two guide plates (50262) are installed at the top of the guide block (50261). An arc plate (50254) is located between the two guide plates (50262). A snap-fit ​​fastener is installed on the guide plate (50262) on the side away from the end ring (5021).

9. The constant temperature infusion heating device for anesthetic drugs according to claim 8, characterized in that: The snap-fit ​​fastener includes a fixed cylinder (50263) fixedly installed on a guide plate (50262) on the side away from the end ring (5021). A positioning rod (50264) is movably installed inside the fixed cylinder (50263). One end of the positioning rod (50264) extends through the area between the two guide plates (50262) and is snapped into one of the positioning slots (50257). A spring (50265) is fixedly installed at the end of the positioning rod (50264) away from the end ring (5021). One end of the spring (50265) is fixedly connected to the inner wall of the end of the fixed cylinder (50263). A pull rod (50266) is fixedly installed at the end of the positioning rod (50264) away from the end ring (5021). One end of the pull rod (50266) extends through the outside of the fixed cylinder (50263).

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