Anesthesia department clinical local anesthesia controllable spray device

Abstract

The application provides an adjustable spray device for clinical local anesthesia in anesthesiology department, and relates to the field of medical instruments, which comprises a lower barrel, six groups of limiting blocks are arranged and fixed in a ring shape on the top of an anesthetic storage box, six baffles are arranged and fixed in a ring shape on the bottom of the anesthetic storage box, a micro water pump is fixedly arranged in the lower barrel, a spray pipe is connected to the right side of the micro water pump, a spray head is fixedly arranged at one end of the spray pipe, a support rail is further fixedly arranged on the top of the lower barrel, a dosing pipe lower stopper is slidably arranged at the bottom end of each of the six dosing pipes, and a lower stopper pull rod is fixedly arranged at the bottom of each dosing pipe lower stopper. The device can select and control corresponding dosing pipes according to different dosages, and can automatically dose the anesthetic without manual repeated checking of the liquid amount, so that the liquid amount is more convenient to control.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a controllable spray device for local anesthesia in anesthesiology department. BACKGROUND

[0002] In clinical practice, for laryngeal operation and various reasons caused by airway obstruction, it is necessary to give full surface anesthesia to make the laryngeal reflex satisfactory, the laryngeal part fully exposed and the tracheal intubation operation smoothly. When local anesthesia is performed on the larynx, tetracaine is usually sprayed on the surface of the larynx by spraying method.

[0003] The existing spray device for laryngeal local anesthesia needs to determine the amount of liquid medicine to be used according to different patients before use, and the liquid medicine needs to be slowly poured into a measuring device when adding liquid medicine into the spray device. The amount of liquid medicine needs to be repeatedly checked during this process, so that the amount of poured liquid medicine perfectly matches the required amount of liquid medicine. However, it is very inconvenient to control the amount of liquid medicine, and the opening for transferring the anesthetic liquid is directly exposed when pouring the anesthetic liquid into the spray device, so the sanitary use needs to be improved. SUMMARY

[0004] Therefore, the present application provides a controllable spray device for local anesthesia in anesthesiology department to solve the problem of inconvenient operation of the existing spray device for laryngeal local anesthesia in controlling the amount of liquid medicine and improving the sanitary use.

[0005] The present application provides a controllable spray device for local anesthesia in anesthesiology department, which specifically comprises: a lower barrel; a support plate is rotatably installed on the top of the lower barrel; six dosing medicine pipes are fixedly arranged in a ring shape on the support plate; a anesthetic storage box is fixedly arranged at the top of the six dosing medicine pipes; six adjusting rods are rotatably installed in the anesthetic storage box; a rubber baffle plate is fixedly arranged at the bottom of each of the six adjusting rods; a positioning block is slidably installed at the top outside of each of the six adjusting rods; six sets of limiting blocks are fixedly arranged in a ring shape at the top of the anesthetic storage box; six baffles are fixedly arranged in a ring shape at the bottom of the anesthetic storage box; a micro water pump is fixedly arranged in the lower barrel; a spray pipe is connected to the right side of the micro water pump, and a spray head is fixedly arranged at one end of the spray pipe; a set of support rails is fixedly arranged at the top of the lower barrel; a medicine pipe lower baffle is slidably installed at the bottom of each of the six dosing medicine pipes; a lower baffle pull rod is fixedly arranged at the bottom of each of the medicine pipe lower baffles.

[0006] Furthermore, the top part of the adjusting rod is a rectangular rod, and a rectangular hole with the same cross-sectional size as the rectangular rod is provided in the middle of the positioning block. In addition, a spring that can push the positioning block to slide downward is also provided on the top of each positioning block.

[0007] Furthermore, each of the positioning blocks has a round rod on its outer side, and these round rods are respectively located above the small round holes on the corresponding rubber baffles below them. The top of each limiting block has a strip groove with an inner diameter equal to the cross-sectional diameter of the round rod on the outer side of the positioning block. When the round rod on the outer side of the positioning block is engaged with the strip groove on the top of the limiting block on the inner side, the small round holes on the rubber baffles will coincide with the small round holes on the partition.

[0008] Furthermore, the amount of drug stored in the internal cavity of each of the six quantitative dosing tubes is not equal. The drug storage amounts of the six quantitative dosing tubes are 0.5ml, 1ml, 2ml, 3ml, 4ml and 5ml, respectively. All quantitative dosing tubes are transparent glass tubes, and the drug storage amount is marked on the outside.

[0009] Furthermore, the lower stop of the dosing tube can slide horizontally at the bottom of the metering dosing tube. When the lower stop slides below the opening at the bottom of the metering dosing tube, it can close the opening. After the lower stop disengages from the opening at the bottom of the metering dosing tube, the liquid medicine inside the metering dosing tube can flow downwards. The bottom end of the lower stop pull rod can slide in the guide groove in the middle of the support track.

[0010] Furthermore, two annular protrusions are fixedly provided on the top inner wall of the lower barrel, two corresponding annular grooves are provided on the outer side of the lower part of the support plate, and six vertical rods are also equidistantly provided on the outer side of the support plate.

[0011] Furthermore, an arc-shaped opening is provided on the top right side of the lower tank body, and the main body of the left side of the support rail is a circular structure. When the lower stop rod at the bottom of the dosing tube slides into the main body of the support rail, the lower stop of the dosing tube will be located below the opening at the bottom of the quantitative dosing tube. A concave structure is provided on the right side of the support rail, and when the lower stop rod at the bottom of the dosing tube slides into the concave part on the right side of the support rail, it will cause the lower stop of the dosing tube to disengage from the opening at the bottom of the quantitative dosing tube.

[0012] Furthermore, both the rubber baffle and the partition are provided with a small round hole that runs vertically through the material, and the small round hole on the partition is located on one side near the middle of the anesthetic storage box.

[0013] Beneficial effects

[0014] 1. The anesthetic drug storage box in this invention is used to store anesthetic drugs for surgery. The quantitative dosing tube is used to transfer the anesthetic drugs in the anesthetic drug storage box to the lower barrel. The amount of drug stored in the internal cavity of the quantitative dosing tube is not equal. When local anesthesia is required for the patient, the anesthetic drugs in the anesthetic drug storage box can be introduced into the quantitative dosing tube first. Because the amount of drug that can be stored in the six quantitative dosing tubes is different, the corresponding quantitative dosing tube can be selected for control according to different dosages. Moreover, the anesthetic drug can be automatically dosed as long as it is filled, without the need for manual repeated checking of the drug volume, making it more convenient to control the drug volume.

[0015] 2. The support rail and the lower stop rod in this invention can drive the lower stop of the dosing tube to slide horizontally at the bottom of the quantitative dosing tube. This allows the lower stop of the dosing tube to close the opening at the bottom of the quantitative dosing tube or to allow the anesthetic inside the quantitative dosing tube to flow downward into the lower tank. Therefore, simply rotating the quantitative dosing tube containing the anesthetic to the far right will allow the anesthetic inside to automatically flow into the lower tank and be ready to be sprayed out. When adding anesthetic, there is no need to touch the quantitative dosing tube to transfer the anesthetic inside. At the same time, the opening for transferring the drug solution will not be exposed, making it more hygienic and convenient to use. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the spindle side structure after cross-section of an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the spindle-side structure according to an embodiment of the present invention;

[0020] Figure 3 This is an axial side view of the barrel section and its cooperation with the support plate in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the top-side structure of the barrel body according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the overhead side structure of the quantitative dosing tube and the lower stop block of the dosing tube according to an embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of a partial axial side structure after the positioning pressure block is moved down in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of a partial axial side structure after the positioning pressure block is moved upward in an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the overhead side structure of the rubber baffle and partition in an embodiment of the present invention.

[0026] List of reference numerals

[0027] 1. Lower tank body; 2. Support plate; 3. Dosing tube; 4. Anesthetic storage box; 5. Rubber baffle; 6. Adjusting rod; 7. Positioning block; 8. Limiting block; 9. Mini water pump; 10. Spray pipe; 11. Support rail; 12. Lower stop block of dosing tube; 13. Lower stop block pull rod; 14. Partition plate. Detailed Implementation

[0028] To make the objectives, solutions, and advantages of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments of the present invention.

[0029] Example: Please refer to Figures 1 to 8 As shown:

[0030] This invention provides an adjustable spray device for local anesthesia in anesthesiology, comprising a lower tank 1; a support plate 2 is rotatably mounted on the top of the lower tank 1, which serves both to support the rotation of the support plate 2 and to temporarily store the anesthetic to be sprayed outwards. The support plate 2 supports the metering tubes 3 and the anesthetic storage box 4 on top of them; six metering tubes 3 are fixedly arranged in a ring on the support plate 2. When local anesthesia is required, the anesthetic in the anesthetic storage box 4 can be first introduced into the metering tubes 3. Because the six metering tubes 3 can store different amounts of medication, the corresponding metering tube 3 can be selected for adjustment according to different dosages; the top of the six metering tubes 3... A fixed anesthetic drug storage box 4 is installed in the unit to store anesthetic drugs. The anesthetic drug storage box 4 has six rotatable adjusting rods 6 inside. When anesthetic drugs need to be introduced into the metering tube 3, the adjusting rods 6 can rotate the rubber baffles 5 at their bottom ends. When the small round holes on the rubber baffles 5 align with the small round holes on the partition 14, the anesthetic drugs inside the anesthetic drug storage box 4 will flow into the metering tube 3. Each of the six adjusting rods 6 has a fixed rubber baffle 5 at its bottom end. The rubber baffles 5 can guide the anesthetic drugs from the anesthetic drug storage box 4 into the metering tube 3 through their small round holes, and can also prevent the anesthetic drugs from the anesthetic drug storage box 4 from flowing into the metering tube 3. Both the 5th and the partition 14 are provided with a small through hole, and the small holes on the partition 14 are located on the side near the middle of the anesthetic storage box 4. When anesthetic needs to be introduced into the metering tube 3, the rubber baffle 5 at its bottom can be rotated by the adjusting rod 6. When the small holes on the rubber baffle 5 and the small holes on the partition 14 are aligned vertically, the anesthetic inside the anesthetic storage box 4 will flow into the metering tube 3. A positioning block 7 is slidably installed on the outer side of the top of each of the six adjusting rods 6. After the positioning block 7 moves down, its outer round rod can be embedded in the strip groove on the top of the limiting block 8, thereby locking and positioning the orientation of the adjusting rod 6 and the rubber baffle 5. The top of the anesthetic storage box 4 is fixedly provided with six sets of limiting blocks 8 arranged in a ring. The limiting block 8 and the outer round rod of the positioning block 7 are engaged to lock the orientation of the positioning block 7; the bottom of the anesthetic storage box 4 is fixedly provided with six partitions 14 arranged in a ring. The partitions 14 and the rubber baffle 5 can prevent the anesthetic in the anesthetic storage box 4 from flowing into the quantitative drug dosing tube 3; a micro water pump 9 is fixedly installed inside the lower barrel 1. The micro water pump 9 can draw out the anesthetic in the lower barrel 1 for local anesthesia; a spray pipe 10 is fixedly connected to the right side of the micro water pump 9, and a nozzle is fixedly installed at one end of the spray pipe 10. The anesthetic drawn out by the micro water pump 9 will first enter the spray pipe 10, and then the anesthetic will be sprayed outward through the nozzle at one end of the spray pipe 10 to provide local anesthesia to the patient's throat;A set of support rails 11 is fixedly installed on the top of the lower tank 1. The support rails 11 cooperate with the lower stop rod 13 to drive the lower stop block 12 of the dosing tube to slide horizontally at the bottom of the metering dosing tube 3, so that the lower stop block 12 of the dosing tube can close the opening at the bottom of the metering dosing tube 3 or allow the anesthetic inside the metering dosing tube 3 to flow downward into the lower tank 1. A lower stop block 12 of the dosing tube is slidably installed at the bottom of each of the six metering dosing tubes 3. When the lower stop block 12 of the dosing tube slides below the opening at the bottom of the metering dosing tube 3, it can close the opening. After the lower stop block 12 of the dosing tube is separated from the opening at the bottom of the metering dosing tube 3, the liquid inside the metering dosing tube 3 can flow downward. The lower stop block 12 of the dosing tube can slide horizontally at the bottom of the metering dosing tube 3. When the lower stop block 12 of the dosing tube slides below the opening at the bottom of the metering dosing tube 3, it can close the opening. After the lower stop 12 disengages from the opening at the bottom of the metering dosing tube 3, the liquid medication inside the metering dosing tube 3 can flow downwards. The bottom end of the lower stop lever 13 can slide in the guide groove in the middle of the support rail 11. The support rail 11 and the lower stop lever 13 work together to drive the lower stop 12 of the dosing tube to slide horizontally at the bottom of the metering dosing tube 3, thereby allowing the lower stop 12 to close the opening at the bottom of the metering dosing tube 3 or to allow the anesthetic medication inside the metering dosing tube 3 to flow downwards into the lower tank 1. A lower stop lever 13 is fixedly installed at the bottom of each lower stop 12 of the dosing tube. The lower stop lever 13 works with the support rail 11 to drive the lower stop 12 of the dosing tube to slide horizontally at the bottom of the metering dosing tube 3, thereby allowing the lower stop 12 to close the opening at the bottom of the metering dosing tube 3 or to allow the anesthetic medication inside the metering dosing tube 3 to flow downwards into the lower tank 1.

[0031] The top part of the adjusting rod 6 is a rectangular rod, and the positioning block 7 has a rectangular hole in the middle with the same cross-sectional size as the rectangular rod. The top of the positioning block 7 is also equipped with a spring that can push it to slide downward. Therefore, when the positioning block 7 rotates, it can drive the adjusting rod 6 and the rubber baffle 5 at its bottom to rotate synchronously. When the positioning block 7 is pushed downward by the spring at its top so that its outer round rod is engaged with the strip groove at the top of the limiting block 8, the positioning block 7 can not rotate, thus locking the adjusting rod 6.

[0032] Each positioning block 7 has a round rod on its outer side, and these rods are located above the small round holes on the corresponding rubber baffles 5 below them. Each limiting block 8 has a groove on its top with an inner diameter equal to the cross-sectional diameter of the round rod on its outer side. When the round rod on the outer side of the positioning block 7 engages with the groove on the top of the limiting block 8 on its inner side, the small round holes on the rubber baffles 5 coincide with the small round holes on the partition 14. When anesthetic needs to be introduced into the metering tube 3, it is only necessary to first… Pull the positioning block 7 upward to rotate it. When the outer round rod of the positioning block 7 is at the top of the inner limiting block 8, the positioning block 7 can be released. Then the positioning block 7 will slide downward by the spring. At this time, the outer round rod of the positioning block 7 will also be embedded in the strip groove at the top of the inner limiting block 8. At the same time, because the small round hole on the rubber baffle 5 will coincide with the small round hole on the partition 14, the anesthetic in the anesthetic storage box 4 will flow into the quantitative drug dosing tube 3.

[0033] The amount of drug stored in the internal cavity of each of the six quantitative drug dosing tubes 3 is not equal. The drug storage amounts of the six quantitative drug dosing tubes 3 are 0.5ml, 1ml, 2ml, 3ml, 4ml and 5ml respectively. All of the quantitative drug dosing tubes 3 are transparent glass tubes, and the drug storage amount is marked on the outside. When local anesthesia is required for the patient, the anesthetic drug storage box 4 can be introduced into the quantitative drug dosing tubes 3 first. Because the amount of drug that can be stored in the six quantitative drug dosing tubes 3 is different, the corresponding quantitative drug dosing tube 3 can be selected for adjustment according to different drug dosages.

[0034] Two annular protrusions are fixedly installed on the top inner wall of the lower tank 1, and two corresponding annular grooves are provided on the outer side of the lower part of the support plate 2. Six vertical rods are also equidistantly arranged on the outer side of the support plate 2. Therefore, the support plate 2 will not wobble up and down when it rotates on the top of the lower tank 1. The support plate 2 is more stable when it drives the metering dosing tube 3 to rotate and adjust. The vertical rods on the outer side of the support plate 2 can easily push it to rotate.

[0035] The lower tank 1 has an arc-shaped opening on its top right side. The main body of the support rail 11 on the left side is a circular structure. When the lower stop rod 13 at the bottom of the dosing tube lower stop 12 slides into the main body of the support rail 11, the dosing tube lower stop 12 will be located below the opening at the bottom of the metering dosing tube 3. The support rail 11 has a concave structure on its right side. When the lower stop rod 13 at the bottom of the dosing tube lower stop 12 slides into the concave part on the right side of the support rail 11, it will cause the dosing tube lower stop 12 to disengage from the opening at the bottom of the metering dosing tube 3. The support rail 11, in conjunction with the lower stop lever 13, can drive the lower stop 12 of the dosing tube to slide horizontally at the bottom of the metering dosing tube 3. This allows the lower stop 12 to close the opening at the bottom of the metering dosing tube 3 or to allow the anesthetic inside the metering dosing tube 3 to flow downward into the lower tank 1. Therefore, simply rotating the metering dosing tube 3 containing the anesthetic to the far right will automatically allow the anesthetic inside to flow into the lower tank 1 and be ready to be sprayed out. When adding anesthetic, there is no need to touch the metering dosing tube 3 to transfer the anesthetic inside, making it more hygienic and convenient to use.

[0036] The specific usage and function of this embodiment: In this invention, when this device is needed to perform local anesthesia on clinical patients in the anesthesiology department, first open the sealing cover on the top of the anesthetic drug storage box 4 and pour the required anesthetic drug into it. Then tighten the sealing cover on the top of the anesthetic drug storage box 4 again. Later, multiple patients can be anesthetized using the anesthetic drug stored inside the anesthetic drug storage box 4. When using this device, place it on the anesthesia workbench. When performing local anesthesia on a patient, first introduce the anesthetic drug in the anesthetic drug storage box 4 into the quantitative drug delivery tube 3. Because the six quantitative drug delivery tubes 3 can store different amounts of drug, the corresponding quantitative drug delivery tube 3 can be selected for control according to different drug dosages. This is because when the bottom of the lower stop 12 of the drug delivery tube is lowered... When the stop lever 13 slides into the main body of the support rail 11, the lower stop 12 of the dosing tube will be located below the opening at the bottom of the quantitative dosing tube 3. Therefore, when the anesthetic is introduced into the quantitative dosing tube 3, as long as the quantitative dosing tube 3 is not located at the rightmost position, the bottom will be sealed. Then, the positioning block 7 is pulled up and rotated. When the positioning block 7 rotates, it can drive the adjusting rod 6 and its bottom rubber baffle 5 to rotate synchronously. When the round rod on the outside of the positioning block 7 is at the top of the inner limit block 8, the positioning block 7 can be released. Then, the positioning block 7 will be pushed down by the spring. At this time, the round rod on the outside of the positioning block 7 will also be embedded in the strip groove at the top of the inner limit block 8. At the same time, because the small round hole on the rubber baffle 5 will be in contact with... The small holes on the partition 14 overlap, so the anesthetic in the anesthetic storage box 4 flows into the metering tube 3. During this process, the amount of drug inside the metering tube 3 can be observed through the outer wall of the metering tube 3. When the metering tube 3 is full of anesthetic, the positioning block 7 and the adjusting rod 6 can be used to rotate the rubber baffle 5 so that the small holes on the rubber baffle 5 are misaligned with the small holes on the partition 14. In this way, the anesthetic in the anesthetic storage box 4 will be sealed inside again and will not flow downward. Then, the anesthetic in the metering tube 3 is added to the lower tank 1. During operation, the metering tube 3 is rotated by the support plate 2 and rotated to the rightmost position. When the metering tube 3 is rotated to the rightmost position, its bottom end The lower stop lever 13 at the bottom of the lower stop block 12 of the dosing tube slides into the concave part on the right side of the support rail 11, thus driving the lower stop block 12 of the dosing tube to slide towards the middle position of the device. At this time, the lower stop block 12 of the dosing tube will disengage from the opening at the bottom of the metering dosing tube 3, so the anesthetic inside the metering dosing tube 3 will flow into its interior through the arc-shaped opening on the top right side of the lower tank 1. Finally, the micro water pump 9 can draw the anesthetic in the lower tank 1 outward into the spray tube 10, and then these anesthetics will be sprayed outward through the nozzle at one end of the spray tube 10 to provide local anesthesia to the patient's throat. The support rail 11 and the lower stop lever 13 cooperate to drive the lower stop block 12 of the dosing tube to slide horizontally at the bottom end of the metering dosing tube 3.This allows the lower baffle 12 to seal the opening at the bottom of the metering dosing tube 3 or to allow the anesthetic inside the metering dosing tube 3 to flow downwards into the lower tank 1. Therefore, simply rotating the metering dosing tube 3 containing the anesthetic to the far right will automatically allow the anesthetic inside to flow into the lower tank 1 for dispensing. Adding anesthetic does not require contact with the metering dosing tube 3 to transfer the anesthetic, making it more hygienic and convenient to use.

Claims

1. An adjustable spray device for local anesthesia in anesthesiology, characterized in that, Includes a lower barrel (1); a support plate (2) is rotatably mounted on the top of the lower barrel (1); six quantitative dosing tubes (3) are fixedly arranged in a ring on the support plate (2), and the amount of drug stored in the internal cavity of each quantitative dosing tube (3) is not equal; an anesthetic drug storage box (4) is fixedly mounted on the top of the six quantitative dosing tubes (3); six adjusting rods (6) are rotatably mounted inside the anesthetic drug storage box (4); a rubber baffle (5) is fixedly mounted at the bottom of each of the six adjusting rods (6); a positioning pressure block (7) is slidably mounted on the outer side of the top of each of the six adjusting rods (6); and six sets of limiting blocks are fixedly arranged in a ring on the top of the anesthetic drug storage box (4). 8) Each set of limiting blocks includes a limiting block located on the outside of the positioning pressure block and a limiting block located on the inside of the positioning pressure block; the bottom of the anesthetic storage box (4) is fixedly provided with a total of six partitions (14) arranged in a ring. The partitions (14) cooperate with the rubber baffles (5) to prevent the anesthetic from flowing into the quantitative dosing tube (3). The rubber baffles (5) and the partitions (14) are each provided with a small round hole that runs through from top to bottom, and the small round holes on the partitions (14) are all located on the side near the middle of the anesthetic storage box (4); a round rod is provided on the outside of each positioning pressure block (7), and these round rods are respectively located above the small round holes on the corresponding rubber baffles (5) below them. The top of each limiting block (8) is provided with a ring with an inner diameter that is consistent with the fixed diameter. The outer circular rod of the positioning block (7) has a strip groove with the same diameter as the outer circular rod. When the outer circular rod of the positioning block (7) is engaged with the strip groove on the top of the inner limiting block (8), the orientation of the adjusting rod (6) and the rubber baffle (5) is locked and positioned. At this time, the small circular hole on the rubber baffle (5) will coincide with the small circular hole on the partition (14), and the anesthetic in the anesthetic storage box (4) will flow into the quantitative dosing tube (3). A micro water pump (9) is fixedly installed inside the lower barrel (1). A spray pipe (10) is fixedly connected to the right side of the micro water pump (9), and a nozzle is fixedly installed at one end of the spray pipe (10). A set of support rails (11) is also fixedly installed on the top of the lower barrel (1). Each of the metering dosing tubes (3) has a dosing tube lower stop block (12) slidably installed at its bottom end; each dosing tube lower stop block (12) has a lower stop block rod (13) fixedly installed at its bottom. The support rail (11) and the lower stop block rod (13) cooperate to drive the dosing tube lower stop block (12) to slide horizontally at the bottom of the metering dosing tube (3), so that when the dosing tube lower stop block (12) slides to below the opening at the bottom of the metering dosing tube (3), it can close the opening, or after the dosing tube lower stop block (12) is separated from the opening at the bottom of the metering dosing tube (3), the liquid medicine inside the metering dosing tube (3) can flow downward, and the bottom end of the lower stop block rod (13) can slide in the guide groove in the middle of the support rail (11).

2. The adjustable spray device for local anesthesia in anesthesiology as described in claim 1, characterized in that: The drug storage volumes of the six quantitative dosing tubes (3) are 0.5ml, 1ml, 2ml, 3ml, 4ml and 5ml respectively, and the quantitative dosing tubes (3) are all transparent glass tubes with drug storage volume markings on the outside.

3. The adjustable spray device for local anesthesia in anesthesiology as described in claim 1, characterized in that: Two annular protrusions are fixedly provided on the top inner wall of the lower barrel (1), two corresponding annular grooves are provided on the outer side of the lower part of the support plate (2), and six vertical rods are also provided at equal intervals on the outer side of the support plate (2).

4. The adjustable spray device for local anesthesia in anesthesiology as described in claim 1, characterized in that: The top part of the adjusting rod (6) is a rectangular rod, and the positioning block (7) has a rectangular hole in the middle with the same cross-sectional size as the rectangular rod. The top of the positioning block (7) is also provided with a spring that can push it to slide downward.

5. The adjustable spray device for local anesthesia in anesthesiology as described in claim 1, characterized in that: The lower barrel (1) has an arc-shaped opening on the top right side. The main body of the support rail (11) is a circular structure on the left side. When the lower stop rod (13) at the bottom of the dosing tube lower stop (12) slides into the main body of the support rail (11), the dosing tube lower stop (12) will be located below the opening at the bottom of the quantitative dosing tube (3). The support rail (11) has a concave structure on the right side. When the lower stop rod (13) at the bottom of the dosing tube lower stop (12) slides into the concave part on the right side of the support rail (11), it will cause the dosing tube lower stop (12) to separate from the opening at the bottom of the quantitative dosing tube (3).

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