Local anesthesia heating device for field extremely cold areas

Abstract

The invention relates to the technical field of local anesthesia appliances, and discloses a local anesthesia heating device for field extremely cold areas, which comprises an injector heating cylinder and an anesthetic injector, the injector heating cylinder is in a semi-cylindrical shape, the anesthetic injector is wrapped in the injector heating cylinder, a cylinder closing mechanism is arranged in the injector heating cylinder, and the injector heating cylinder is connected with the anesthetic injector. The anesthetic heating device is used for heating anesthetic in the anesthetic injector; the cylinder closing mechanism comprises a heating piece and two thermal insulation wall cylinder doors, the heating piece is arranged on the inner wall of the injector heating cylinder and comprises a diameter-adaptive plate, a first heating wire and an auxiliary spraying mechanism, the diameter-adaptive plate is connected with the injector heating cylinder, the first heating wire is distributed on the inner side of the diameter-adaptive plate, and the thermal insulation wall cylinder doors are arranged at an opening of the injector heating cylinder; and after the heat insulation wall cylinder door is closed, force is applied to the adaptive-diameter plate. The anesthetic injector is efficiently heated through the cylinder closing mechanism in the injector heating cylinder, the diameter adapting plate is made to be tightly attached to the outer wall of the anesthetic injector, and it is ensured that anesthetic can be evenly and rapidly heated to the temperature suitable for injection.

Description

Technical Field

[0001] The present invention relates to the field of local anesthetic appliances, and more specifically, to a local anesthetic heating device for extremely cold outdoor areas. Background Art

[0002] When providing medical assistance in extremely cold outdoor areas, local anesthesia is one of the common medical means. However, due to the extremely low environmental temperature, when a traditional anesthetic syringe is directly used, the anesthetic inside it is often in a low-temperature state. This not only affects the injection fluidity of the anesthetic, but may also cause discomfort to the patient during the injection process and even lead to frostbite of local tissues.

[0003] Some devices for heating drugs on the market are mostly bulky, complex to operate, and not suitable for outdoor environments. Especially in extremely cold conditions, the heating efficiency and heat preservation performance of these devices often cannot meet the actual needs. For the skin disinfection step before local anesthesia, traditional disinfectants also face the same problem. Therefore, we propose a local anesthetic heating device for extremely cold outdoor areas. Summary of the Invention

[0004] The present invention provides a local anesthetic heating device for extremely cold outdoor areas to solve the technical problems in the related art.

[0005] The present invention provides a local anesthetic heating device for extremely cold outdoor areas, including: a syringe heating cylinder and an anesthetic syringe. The shape of the syringe heating cylinder is semi-cylindrical, which wraps the anesthetic syringe. A closed cylinder mechanism is provided in the syringe heating cylinder for heating the anesthetic in the anesthetic syringe;

[0006] The closed cylinder mechanism includes a heating element and two heat-insulating wall cylinder doors. The heating element is arranged on the inner wall of the syringe heating cylinder and includes an appropriate-diameter plate, a first electric heating wire, and an auxiliary spraying mechanism. The appropriate-diameter plate is connected to the syringe heating cylinder, and the first electric heating wire is distributed on the inner side of the appropriate-diameter plate. The heat-insulating wall cylinder doors are arranged at the opening of the syringe heating cylinder. After the heat-insulating wall cylinder doors are closed, the arc edges apply force to the appropriate-diameter plate to make the appropriate-diameter plate tend to the anesthetic syringe;

[0007] The auxiliary spraying mechanism includes a liquid storage rubber bag and a second electric heating wire. The liquid storage rubber bag pre-stores disinfectant, and the second electric heating wire is arranged in the liquid storage rubber bag. Before injecting the anesthetic into the patient, the disinfectant heated by the second electric heating wire is sprayed on the skin.

[0008] Further, the magnetic columns of the heat-insulating wall cylinder doors are symmetrically embedded in the central position of the closed contact edges of the two. Guide rails are fixedly arranged in opposite directions on the contact surfaces of the two magnetic columns, and slide rail grooves are provided at the ends of the two guide rails away from the magnetic columns. At the same time, the slide rail grooves are opened inside the syringe heating cylinder.

[0009] Further, elastic bands are fixedly arranged in the closing direction at the bottom ends of the two heat-insulating wall cylinder doors. The axial direction of the magnetic column is perpendicular to the extending direction of the slide rail groove, and the magnetic attraction force is greater than the maximum resilience of the elastic bands.

[0010] Further, the rotating column on the outer wall of the sizing plate is hinged to the inner wall of the syringe heating cylinder. A semi-circular reset piece is arranged on one side of the sizing plate close to the rotating column on the outer side, and the reset piece is made of nitinol. When not subjected to external force, it forces the sizing plate to deflect towards the anesthetic syringe by a pre-tightening angle of 5-10°.

[0011] Further, a clamping plate is fixedly arranged at the top end of the syringe heating cylinder. The finger-pressing buckle plate of the anesthetic syringe is clamped to the clamping plate at the top of the wrapping cavity, and a battery box is fixedly arranged on the lower wall of the clamping plate.

[0012] Further, a replaceable button battery and a control circuit board are arranged in the battery box. A micro display screen is fixedly inlaid on the upper wall of the clamping plate. A rotary switch is rotatably arranged on one side of the battery box close to the control circuit board. Data wires are connected between the control circuit board and the heating wire 1 and the heating wire 2, and the rotary switch and the micro display screen are electrically connected to the control circuit board.

[0013] Further, the auxiliary spraying mechanism further includes a rotating cylinder and a spraying head. The rotating cylinder is rotatably arranged outside the bottom end of the syringe heating cylinder. A threaded cylinder is arranged at the top of the liquid storage rubber bag. The liquid storage rubber bag is arranged in the gap between the rotating cylinder and the syringe heating cylinder.

[0014] Further, the inner wall of the rotating cylinder is provided with an internal thread matching the threaded cylinder. The lead of the thread is 2.5 mm. When the rotating cylinder is rotated, it drives the threaded cylinder to move downward to compress the liquid storage rubber bag, and the compression stroke is linearly related to the number of turns of the thread rotation.

[0015] Further, a plurality of spraying heads are circumferentially and evenly distributed along the needle perforation at the bottom of the syringe heating cylinder. A blocking plate is rotatably arranged in each spraying head. A plurality of blocking plates are connected in series by the same control wire to synchronously open all the spraying heads.

[0016] Further, a groove is opened on the lower wall of the battery box. An elastic sheet flush with the lower wall of the battery box is fixedly arranged inside the groove. One end of the control wire away from the blocking plate is placed in the groove in parallel with the elastic sheet and is in a tensioned state. A bulging sheet is fixedly arranged below the groove.

[0017] The beneficial effects of the present invention are as follows:

[0018] The present invention realizes efficient heating of an anesthetic syringe through a closed cylinder mechanism inside a syringe heating cylinder. The heating wire 1 in the heating element is evenly distributed inside the diameter-adapting plate. When the heat-insulating wall cylinder door is closed, its arc-shaped edge applies pressure to the diameter-adapting plate, prompting the diameter-adapting plate to closely fit the outer wall of the anesthetic syringe. This design not only ensures that the anesthetic can be evenly and quickly heated to a suitable injection temperature but also effectively reduces heat dissipation and improves heating efficiency. In extremely cold environments, the device can quickly heat the anesthetic to a temperature suitable for the human body to accept, avoiding injection discomfort caused by too low drug temperature and significantly enhancing the comfort and safety of the anesthesia operation;

[0019] The auxiliary spraying mechanism consists of a liquid storage rubber bag and a heating wire 2. The disinfectant pre-stored in the liquid storage rubber bag can be preheated to a suitable temperature under the heating of the heating wire 2 before injecting the anesthetic. This design not only ensures the fluidity of the disinfectant in extremely cold environments but also improves the disinfection effect and reduces the discomfort caused to the patient's skin due to too low disinfectant temperature. In addition, the convenient spraying function of the auxiliary spraying mechanism enables medical staff to easily spray the preheated disinfectant evenly on the patient's skin during the operation, which not only simplifies the operation process but also improves work efficiency. In field medical assistance, this design undoubtedly provides more considerate and efficient medical services for patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the overall structural schematic diagram of the present invention;

[0021] Figure 2 is the open structural schematic diagram of the closed cylinder mechanism of the present invention;

[0022] Figure 3 is the overall right view structural schematic diagram of the present invention;

[0023] Figure 4 is the internal structural schematic diagram of the syringe heating cylinder of the present invention;

[0024] Figure 5 is the structural schematic diagram of the diameter-adapting plate of the present invention;

[0025] Figure 6 is of the present invention Figure 5 magnified schematic diagram at A in;

[0026] Figure 7 is the structural schematic diagram of the heat-insulating wall cylinder door of the present invention;

[0027] Figure 8 is the internal structural schematic diagram of the battery box of the present invention;

[0028] Figure 9 is of the present invention Figure 8 magnified schematic diagram at B in;

[0029] Figure 10 is a schematic diagram of the internal structure of the rotary cylinder of the present invention.

[0030] In the figure: 11, syringe heating cylinder; 12, clamping plate; 13, anesthetic syringe; 2, cylinder closing mechanism; 21, heat insulation wall cylinder door; 22, guide rail; 23, magnetic column; 24, elastic band; 25, slide rail groove; 3, auxiliary spraying mechanism; 31, rotary cylinder; 32, liquid spraying head; 33, liquid storage rubber bag; 34, threaded cylinder; 35, heating wire II; 36, blocking plate; 37, control wire; 38, bulging piece; 39, groove; 301, elastic piece; 41, knob switch; 42, diameter-adapting plate; 43, heating wire I; 44, data wire; 45, rotating column; 46, battery box; 47, button battery; 48, control circuit board; 49, reset piece; 401, micro display screen. Detailed implementation manners

[0031] Now, the subject matter described herein will be discussed with reference to example embodiments. It should be understood that discussing these embodiments is only to enable those skilled in the art to better understand and thus implement the subject matter described herein. The functions and arrangements of the elements discussed can be changed without departing from the scope of protection of the content of this specification. Each example can omit, substitute, or add various processes or components as needed. Additionally, the features described relative to some examples can also be combined in other examples.

[0032] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, a local anesthetic heating device for extremely cold outdoor areas includes: a syringe heating cylinder 11 and an anesthetic syringe 13. The syringe heating cylinder 11 is in the shape of a semi-cylindrical shape and wraps the anesthetic syringe 13 therein. A cylinder closing mechanism 2 is provided in the syringe heating cylinder 11 for heating the anesthetic in the anesthetic syringe 13.

[0033] The cylinder closing mechanism 2 includes a heating member and two heat insulation wall cylinder doors 21. The heating member is provided on the inner wall of the syringe heating cylinder 11 and includes a diameter-adapting plate 42, a heating wire I 43, and an auxiliary spraying mechanism 3. The diameter-adapting plate 42 is connected to the syringe heating cylinder 11, and the heating wire I 43 is distributed on the inner side of the diameter-adapting plate 42. The heat insulation wall cylinder door 21 is provided at the opening of the syringe heating cylinder 11. After the heat insulation wall cylinder door 21 is closed, the arc-shaped side applies a force to the diameter-adapting plate 42, causing the diameter-adapting plate 42 to tend towards the anesthetic syringe 13.

[0034] The auxiliary spraying mechanism 3 includes a liquid storage rubber bag 33 and a second heating wire 35. The liquid storage rubber bag 33 stores disinfectant in advance. The second heating wire 35 is arranged in the liquid storage rubber bag 33. Before injecting anesthetic into the patient, the disinfectant heated by the second heating wire 35 is sprayed on the skin. While the anesthetic is being heated, medical staff inject iodophor disinfectant into the liquid storage rubber bag 33. The second heating wire 35 on the inner wall of the liquid storage rubber bag 33 is connected in parallel with the control circuit board 48 through a data wire 44 and shares the same temperature control system. The second heating wire 35 is arranged in a serpentine shape to make the disinfectant evenly heated, and the heating efficiency is ≥85%. When the temperature of the disinfectant reaches the set value, usually 30 - 35°C, the medical staff rotate the rotating cylinder 31 clockwise to drive the threaded cylinder 34 to move downward, applying a vertical pressure to the liquid storage rubber bag 33. At this time, the internal pressure of the liquid storage rubber bag 33 rises to 10 - 15 kPa, providing power reserve for subsequent spraying.

[0035] As Figure 4 , Figure 5 and Figure 6 shown, the magnetic columns 23 of the heat insulation wall cylinder door 21 are symmetrically embedded in the central position of the closed contact side of the two. Guide rails 22 are fixedly arranged on both opposite sides of the contact surfaces of the two magnetic columns 23, and slide rail grooves 25 are provided at the ends of the two guide rails 22 away from the magnetic columns 23. At the same time, the slide rail grooves 25 are opened inside the syringe heating cylinder 11.

[0036] Elastic bands 24 are fixedly arranged in the closing direction at the bottom ends of the two heat insulation wall cylinder doors 21. The axial direction of the magnetic column 23 is perpendicular to the extending direction of the slide rail groove 25, and the magnetic attraction force is greater than the maximum resilience of the elastic band 24.

[0037] The rotating column 45 on the outer wall of the diameter - adapting plate 42 is hinged to the inner wall of the syringe heating cylinder 11. A semi - circular reset piece 49 is provided on one side of the outer side of the diameter - adapting plate 42 close to the rotating column 45, and the reset piece 49 is made of nitinol. When not subjected to external force, it forces the diameter - adapting plate 42 to deflect 5 - 10° in the direction of the anesthetic syringe 13 to form a pre - tightening angle.

[0038] A clamping plate 12 is fixedly arranged at the top end of the syringe heating cylinder 11. The finger - pressing buckle plate of the anesthetic syringe 13 is clamped to the clamping plate 12 at the top of the wrapping cavity. A battery box 46 is fixedly arranged on the lower wall of the clamping plate 12. When the anesthetic is heated to the target temperature, the medical staff directly operate the anesthetic syringe 13 for injection. At this time, the diameter - adapting plate 42 still maintains the temperature through the first heating wire 43. Even if the injection process lasts for 2 - 3 minutes, the temperature fluctuation of the liquid medicine can still be controlled within ±1°C. After the injection is completed, gently pull the anesthetic syringe 13 outwards, the finger - pressing buckle plate disengages from the clamping plate 12, and the heat insulation wall cylinder door 21 automatically resets to the closed state under the pulling force of the elastic band 24.

[0039] As Figure 7 , Figure 8 and Figure 9As shown, a replaceable button battery 47 and a control circuit board 48 are provided in the battery box 46. A micro display screen 401 is fixedly inlaid on the upper wall of the carder board 12. A rotary switch 41 is rotatably arranged on one side of the battery box 46 close to the control circuit board 48. Data wires 44 are connected between the control circuit board 48 and the first heating wire 43 and the second heating wire 35. And the rotary switch 41 and the micro display screen 401 are electrically connected to the control circuit board 48.

[0040] The auxiliary spraying mechanism 3 further includes a rotary cylinder 31 and a liquid spraying head 32. The rotary cylinder 31 is rotatably arranged outside the bottom end of the syringe heating cylinder 11. A threaded cylinder 34 is provided at the top of the liquid storage rubber bag 33. The liquid storage rubber bag 33 is arranged in the gap between the rotary cylinder 31 and the syringe heating cylinder 11.

[0041] The inner wall of the rotary cylinder 31 is provided with an internal thread matching the threaded cylinder 34, and the thread lead is 2.5 mm. When the rotary cylinder 31 is rotated, the threaded cylinder 34 is driven to move downward to compress the liquid storage rubber bag 33, and the compression stroke is linearly related to the number of turns of the thread rotation.

[0042] A plurality of liquid spraying heads 32 are circumferentially and evenly distributed along the needle perforation at the bottom of the syringe heating cylinder 11. A blocking plate 36 is rotatably arranged in each liquid spraying head 32. The plurality of blocking plates 36 are connected in series by the same control wire 37 to synchronously open all the liquid spraying heads 32.

[0043] As Figure 10 As shown, a groove �9 is opened on the lower wall of the battery box 46. A spring piece 301 flush with the lower wall of the battery box 46 is fixedly arranged inside the groove 39. And one end of the control wire 37 away from the blocking plate 36 is placed in the groove 39 in parallel with the spring piece 301 and is in a tensioned state. A bulging piece 38 is fixedly arranged below the groove 39. When disinfection is required, medical staff press the bulging piece 38 with their fingers. The spring piece 301 below it is pressed into the groove 39. At this time, the spring piece 301 pulls the control wire 37 to drive the blocking plate 36 to rotate 90°, opening the channel between the liquid spraying head 32 and the liquid storage rubber bag 33. Since the liquid storage rubber bag 33 has been pre-pressurized, the disinfectant is sprayed out in a mist from the liquid spraying head 32 to cover the anesthesia puncture point. After the spraying is completed, the bulging piece 38 is released, and the spring piece 301 resets under its own elastic force, and the blocking plate 36 is closed again. After use, rotate the rotary cylinder 31 counterclockwise to release the pressure of the liquid storage rubber bag 33. When replacing the battery, open the side cover of the battery box 46 to take out the button battery 47.

[0044] When providing medical assistance in extremely cold areas in the wild, the low temperature state of local anesthetics and disinfectants may affect their effects and the comfort of patients. This device can not only heat the anesthetic, but also heat the disinfectant and control its spraying to improve the efficiency of medical assistance and the comfort of patients;

[0045] The entire device takes the syringe heating cylinder 11 as the core component. Its semi-cylindrical structure design facilitates the accommodation of the anesthetic syringe 13. Before use, medical staff first place the anesthetic syringe 13 filled with anesthetic into the cylinder from the opening position of the syringe heating cylinder 11. At this time, the needle position of the anesthetic syringe 13 passes through the rotating cylinder 31, and the finger pressure buckle plate is precisely clamped into the clamping plate 12, ensuring the stable position of the anesthetic syringe 13 in the heating cylinder, laying the foundation for subsequent heating operations, avoiding problems such as uneven heating caused by position deviation during the heating process, and ensuring the accuracy and reliability of anesthetic heating;

[0046] Using the mutual attraction of the magnetic columns 23, the heat insulation wall cylinder door 21 can be tightly closed. The outer wall of the syringe heating cylinder 11 is provided with a guide rail 22. Only one end of the guide rail 22 is fixedly connected to the magnetic column 23, and there is a certain gap between it and the heat insulation wall cylinder door 21, which can just be inserted into the slide rail groove 25. When it is necessary to close the heat insulation wall cylinder door 21, through the elastic bands 24 fixed on the adjacent sides of the bottoms of the two heat insulation wall cylinder doors 21, the two heat insulation wall cylinder doors 21 are close to each other and closed, fixing and surrounding the anesthetic syringe 13 in the syringe heating cylinder 11. The design of this heat insulation and fixation system effectively isolates the heat inside the syringe heating cylinder 11 from dissipating to the outside, and at the same time ensures the stable position of the anesthetic syringe 13 during the heating process, preventing the anesthetic from being unstably heated due to external environmental factors or accidental shaking during the operation, ensuring the uniformity and continuity of the heating effect, being beneficial to improving the accuracy and safety of local anesthesia implementation in extremely cold regions, and avoiding affecting the anesthesia effect or causing discomfort to the patient due to inappropriate anesthetic temperature;

[0047] When medical staff set the heating temperature through the knob switch 41 according to actual needs, the control circuit board 48 receives the signal and connects the circuit of the heating wire 43. The heating wire 43 starts to heat. Since a semi-circular reset piece 49 is fixedly provided on one side of the outer wall of the diameter-adapting plate 42 close to the rotating column 45, with the elastic action of the reset piece 49, the two diameter-adapting plates 42 approach the outer wall of the anesthetic syringe 13 until they are in close contact, thereby uniformly heating the anesthetic syringe 13 until the specified temperature is reached. This heating control system can accurately control the heating temperature of the anesthetic, avoid adverse effects on the efficacy of the anesthetic due to too high or too low temperature, ensure that the anesthetic is used for local anesthesia operations at an appropriate temperature, be beneficial to improving the success rate and effect of anesthesia. At the same time, the S-shaped distributed heating wire 43 increases the contact area with the anesthetic syringe 13, making the heating more uniform, further improving the heating quality, and ensuring the reliable supply of the anesthetic during local anesthesia in extremely cold regions;

[0048] While heating the anesthetic, medical staff can first inject iodophor disinfectant into the liquid storage rubber bag 33. When the heating wire 1-43 is energized to heat the anesthetic, the heating wire 2-35 can also be energized simultaneously to heat the iodophor disinfectant. When the iodophor is heated to the preset temperature, the medical staff rotates the rotating cylinder 31 to drive the threaded cylinder 34 to move downward, thereby squeezing the liquid storage rubber bag 33 and increasing the pressure inside the liquid storage rubber bag 33. A plurality of liquid spraying heads 32 are provided around the needle at the bottommost wall of the syringe heating cylinder 11, and the liquid spraying heads 32 are communicated with the liquid storage rubber bag 33. When it is necessary to spray the disinfectant, the medical staff presses the elastic piece 301 into the groove 39 with greater force with their fingers. At this time, the control wire 37 can be pulled to pull open the blocking plate 36, so that the heated disinfectant can be smoothly sprayed out from the liquid spraying heads 32 to the local anesthetic point. The design of this disinfectant heating and spraying system cleverly integrates the heating and spraying functions of the disinfectant, avoiding the irritation of the patient's local skin caused by using cold disinfectant in cold weather, reducing the discomfort of the patient. At the same time, disinfecting with the heated disinfectant is beneficial to improving the disinfection effect and preventing complications such as local infection caused by incomplete disinfection, ensuring the safety and hygiene of the local anesthetic operation. Moreover, the entire spraying process is realized through the linkage of the mechanical structure, with simple operation. Medical staff can easily control the spraying of the disinfectant, improving work efficiency. The disinfectant remains in a stable state during the heating process, avoiding the influence on the disinfection effect due to too low temperature;

[0049] During the heating process, the control circuit board 48 monitors the working state of the heating wire 1-43 and the temperature inside the syringe heating cylinder 11 in real time, and transmits the temperature information to the micro display screen 401 for display. Medical staff can intuitively understand the heating progress of the anesthetic by observing the temperature data on the micro display screen 401, so as to timely adjust the setting of the knob switch 41 to ensure that the anesthetic is heated to the accurate specified temperature, providing an accurate temperature reference for the local anesthetic operation, avoiding the influence on the anesthetic effect or potential risks to the patient due to temperature error, improving the intelligent level and operation convenience of the entire local anesthetic heating device, and being beneficial for medical staff to better control the heating process of the anesthetic in the complex environment of extremely cold areas and ensuring the smooth progress of medical operations;

[0050] Through the coordinated work of the above parts, the local anesthetic heating device for extremely cold areas in the wild can effectively heat the anesthetic and disinfectant required for local anesthesia in extremely cold environments, accurately control the heating temperature and spray the disinfectant, providing reliable technical support for local anesthetic operations in the wild, improving the feasibility and safety of medical operations in harsh environments, and ensuring the medical experience and treatment effect of patients.

[0051] The embodiments of the present invention have been described above. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of this embodiment, those of ordinary skill in the art can also make many forms, all of which fall within the protection scope of this embodiment.

Claims

1. A local anesthesia heating device for extremely cold field areas, characterized in that Including: A syringe heating cylinder (11) and an anesthetic syringe (13), the syringe heating cylinder (11) is in the shape of a semi-cylindrical shape, wrapping the anesthetic syringe (13) therein, and a closed cylinder mechanism (2) is arranged in the syringe heating cylinder (11) for heating the anesthetic in the anesthetic syringe (13); The closed cylinder mechanism (2) includes a heating element and two heat-insulating wall cylinder doors (21), the heating element is arranged on the inner wall of the syringe heating cylinder (11), including a diameter-adapting plate (42), a first electric heating wire (43) and an auxiliary spraying mechanism (3), the diameter-adapting plate (42) is connected to the syringe heating cylinder (11), the first electric heating wire (43) is distributed on the inner side of the diameter-adapting plate (42), the heat-insulating wall cylinder doors (21) are arranged at the opening of the syringe heating cylinder (11), and after the heat-insulating wall cylinder doors (21) are closed, the arc edges apply force to the diameter-adapting plate (42) to make the diameter-adapting plate (42) tend to the anesthetic syringe (13); The auxiliary spraying mechanism (3) includes a liquid storage rubber bag (33) and a second electric heating wire (35), the liquid storage rubber bag (33) pre-stores disinfectant, the second electric heating wire (35) is arranged in the liquid storage rubber bag (33), and the disinfectant heated by the second electric heating wire (35) is sprayed on the skin before injecting anesthetic to the patient.

2. The local anesthetic heating device for extremely cold outdoor regions according to claim 1, characterized in that, The magnetic columns (23) of the heat-insulating wall cylinder doors (21) are symmetrically embedded in the central position of the closed contact edges of the two, and guide rails (22) are fixedly arranged in the opposite directions of the contact surfaces of the two magnetic columns (23), and sliding rail grooves (25) are arranged at the ends of the two guide rails (22) far away from the magnetic columns (23), and at the same time, the sliding rail grooves (25) are opened inside the syringe heating cylinder (11).

3. The local anesthetic heating device for extremely cold outdoor areas according to claim 2, characterized in that, Elastic bands (24) are fixed in the closing direction at the bottoms of the two heat-insulating wall cylinder doors (21), the axial direction of the magnetic columns (23) is perpendicular to the extending direction of the sliding rail grooves (25), and the magnetic suction force is greater than the maximum resilience of the elastic bands (24).

4. The local anesthetic heating device for extremely cold outdoor regions according to claim 1, characterized in that The rotating column (45) on the outer wall of the diameter-adapting plate (42) is hinged to the inner wall of the syringe heating cylinder (11), and a semi-circular reset piece (49) is arranged on one side of the outer side of the diameter-adapting plate (42) close to the rotating column (45), and the reset piece (49) is made of nitinol material, and when not subjected to external force, it forces the diameter-adapting plate (42) to deflect by a pre-tightening angle of 5-10° towards the anesthetic syringe (13).

5. A local anesthetic heating device for extremely cold outdoor areas according to claim 1, characterized in that, A clamping plate (12) is fixedly arranged at the top end of the syringe heating cylinder (11), the finger-pressing clamping plate of the anesthetic syringe (13) is clamped to the clamping plate (12) at the top of the wrapping cavity, and a battery box (46) is fixedly arranged on the lower wall of the clamping plate (12).

6. The local anesthetic heating device for extremely cold outdoor regions according to claim 5, characterized in that, A replaceable button battery (47) and a control circuit board (48) are arranged in the battery box (46), a micro display screen (401) is fixedly inlaid on the upper wall of the clamping plate (12), a rotary switch (41) is rotatably arranged on one side of the battery box (46) close to the control circuit board (48), data wires (44) are connected between the control circuit board (48) and the first electric heating wire (43) and the second electric heating wire (35), and the rotary switch (41) and the micro display screen (401) are electrically connected to the control circuit board (48).

7. A local anesthetic heating device for extremely cold outdoor areas according to claim 1, characterized in that, The auxiliary spraying mechanism (3) further includes a rotating cylinder (31) and a liquid spraying head (32). The rotating cylinder (31) is rotatably arranged outside the bottom end of the syringe heating cylinder (11). A threaded cylinder (34) is provided at the top of the liquid storage rubber bag (33). The liquid storage rubber bag (33) is arranged in the gap between the rotating cylinder (31) and the syringe heating cylinder (11).

8. A local anesthetic heating device for extremely cold outdoor areas according to claim 7, characterized in that, The inner wall of the rotating cylinder (31) is provided with an internal thread matching the threaded cylinder (34), and the thread lead is 2.5 mm. When the rotating cylinder (31) is rotated, the threaded cylinder (34) is driven to move downward to compress the liquid storage rubber bag (33), and the compression stroke is linearly related to the number of turns of the thread rotation.

9. The local anesthetic heating device for extremely cold outdoor areas according to claim 8, characterized in that, A plurality of the liquid spraying heads (32) are circumferentially and uniformly arranged along the needle perforation at the bottom of the syringe heating cylinder (11). A blocking plate (36) is rotatably arranged in each of the liquid spraying heads (32). The plurality of blocking plates (36) are connected in series by the same control wire (37) to synchronously open all the liquid spraying heads (32).

10. The local anesthetic heating device for extremely cold outdoor regions according to claim 9, wherein A groove (39) is formed in the lower wall of the battery box (46). A spring piece (301) flush with the lower wall of the battery box (46) is fixedly arranged inside the groove (39). One end of the control wire (37) far from the blocking plate (36) is placed in the groove (39) in parallel with the spring piece (301) and is in a tensioned state. A bulging piece (38) is fixedly arranged below the groove (39).

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