Clinical surface anesthesia spraying device

Abstract

The utility model belongs to the technical field of anesthesia devices, and discloses a clinical surface anesthesia spraying device which comprises a medicine pot, the inner side wall of the medicine pot is connected with a flat plate in a sliding mode, the flat plate divides the internal space of the medicine pot into an upper medicine storage cavity and a lower limiting cavity, and the lower surface of the flat plate is fixedly connected with a round spring. The top of the medicine pot is in threaded connection with a pump head, a liquid outlet of the pump head is in threaded connection with a plastic connecting pipe, and the end, away from the pump head, of the plastic connecting pipe is fixedly connected with an atomizing nozzle; according to the clinical surface anesthesia spraying device, through the arrangement of the plastic connecting pipe with the atomizing nozzle, stable and controllable administration can be conveniently carried out on patients with different body positions or different adjusted inclination angles of the administration device, and through the arrangement of the flat plate and the round spring in the medicine pot, the flat plate and the round spring can be conveniently matched with scales on the surface of the transparent medicine pot; the dosing amount and the remaining medicine amount can be observed conveniently in the using process, meanwhile, liquid medicine in the medicine bag can be fed into the pump head conveniently, and dosing is facilitated.

Description

Technical Field

[0001] This utility model relates to a clinical topical anesthetic spray device, belonging to the technical field of anesthetic devices. Background Technology

[0002] Currently, the most commonly used topical anesthetic spray devices in clinical practice are spray bottle delivery devices, which are generally composed of four parts: a medicine bottle (1), a nozzle (a), an air bottle (b), and a connecting bracket (c). Figure 1 As shown), the connecting bracket (c) connects the medicine pot (1), nozzle (a), and air bottle (b) into a whole. There is a conduit inside the medicine pot (1) that connects the medicine inside the medicine pot (1) to the connecting bracket (c). When administering the medicine, squeeze the air bottle (b) by hand. The air bottle (b) is compressed, generating a high-speed airflow. The high-speed airflow is ejected from the nozzle (a) through the connecting bracket (c). The pressure of the high-speed airflow is low, and the pressure inside the medicine pot (1) is normal. When the high-speed airflow flows through the medicine pot (1), due to the pressure imbalance, the pressure inside the medicine pot... (1) The drug in the medicine bottle (1) is squeezed out through the catheter and sprayed out through the nozzle (a) with the high-speed airflow. The clinical application scenario is usually that the patient lies flat on the operating table. After the glottis is fully exposed by laryngoscope after general anesthesia, the nozzle (a) is inserted into the patient's mouth and the nozzle (a) is aimed at the glottis. The air bottle (b) is squeezed to spray the drug in the medicine bottle (1) into the glottis in a mist and achieve the effect of local anesthesia of the glottis. However, the existing spray bottle drug delivery device will have the following problems: 1. The connection of the nozzle (a) 1. The support (c) is not malleable. When the nozzle (a) and the connecting support (c) are inserted into the patient's mouth, the nozzle (a) often cannot be properly aligned with the glottis due to the obstruction of the medicine bottle (1) by the patient's face, and the medicine bottle (1) may press on the patient's face and cause injury to the patient. 2. When used in the above manner, the nozzle (a) and the connecting support (c) are inserted into the patient's mouth, and the spray drug delivery device will tilt. When the amount of drug in the medicine bottle (1) is small, the conduit in the medicine bottle (1) cannot be kept below the liquid level, resulting in the inability to spray the drug normally. When there is a lot of drug in the medicine bottle (1) and the liquid level is high, although the drug can be sprayed out, the excess liquid often cannot be used up, which will cause unnecessary drug waste. 3. The spray drug delivery device is reusable, which may cause cross-infection between different patients. Therefore, a clinical surface anesthesia spray device with malleable nozzle connecting tube, which avoids direct contact between the medicine bottle and the patient's face, and facilitates the delivery of the remaining liquid is needed. Summary of the Invention

[0003] The purpose of this invention is to provide a clinical topical anesthetic spray device.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a clinical topical anesthesia spray device, comprising a medicine pot, wherein a plate is slidably connected to the inner wall of the medicine pot, dividing the internal space of the medicine pot into an upper medicine storage chamber and a lower limiting chamber, a circular spring is fixedly connected to the lower surface of the plate, a pump head is threadedly connected to the top of the medicine pot, a plastic connecting tube is threadedly connected to the outlet of the pump head, and an atomizing nozzle is fixedly connected to the end of the plastic connecting tube away from the pump head.

[0005] Preferably, the medicine storage chamber contains an elastic medicine bag, the upper surface of which is fixedly connected to the inner top wall of the medicine pot. The top of the elastic medicine bag is provided with a rigid connecting tube, the upper end of which penetrates the inner top wall of the medicine pot and is slidably sleeved on the outside of the inlet pipe of the pump head and connected to the inlet pipe. A control valve is provided inside the rigid connecting tube. The control valve includes a base, and a cross-shaped connecting frame is provided in the center of the upper surface of the base. Two to eight elastic ropes are evenly connected to the edge of the upper surface of the base. The upper ends of the elastic ropes are fixedly connected to the lower end of the rigid connecting tube. The cross-shaped connecting frame is slidably sleeved inside the rigid connecting tube. A piston is fixedly connected to the lower middle part of the cross-shaped connecting frame, and the outer side of the piston is slidably attached to the inner side wall of the rigid connecting tube.

[0006] Preferably, the elastic medicine bag is made of elastic transparent silicone material, the inner wall of the rigid connecting tube and the outer wall of the piston are smooth surfaces, and the lower end of the inner wall of the rigid connecting tube is chamfered.

[0007] Preferably, the medicine pot is made of transparent glass, polyethylene, polypropylene, polyurethane or acrylic material, and the cross-section of the medicine pot is circular, rectangular, regular pentagon, regular hexagon or regular octagon, and the outer wall of the medicine pot is provided with scale.

[0008] Preferably, the inner wall of the medicine pot and the outer wall of the flat plate are smooth surfaces.

[0009] Preferably, the pump head includes a lower cover that is threaded to the top of the medicine pot at its lower end. The lower cover is a hollow structure with an open top. A pressing cover is slidably sleeved on the top of the lower cover. The outer side wall of the pressing cover is slidably fitted with the inner side wall of the lower cover. A return spring is fixedly connected to the lower end of the pressing cover. An inlet pipe is provided at the bottom of the lower cover. A one-way valve I is provided in the inlet pipe. An outlet pipe is provided inside the pressing cover. A one-way valve II is provided in the outlet pipe.

[0010] Preferably, an annular mounting groove I is provided on the outer side wall of the lower end of the press cover, and an O-ring I is installed in the annular mounting groove I. The outer side wall of the O-ring I is slidably fitted with the inner side wall of the lower cover. The O-ring I is made of elastic self-lubricating rubber or has a Teflon / talc self-lubricating coating on its surface. The inner side wall of the lower cover and the outer side wall of the press cover are smooth surfaces, and the upper surface of the press cover is an anti-slip surface.

[0011] Preferably, the plastic connecting tube is a thin metal tube or gooseneck tube with its outer wall covered with plastic, or a plastic tube with metal wires embedded in its inner wall.

[0012] Preferably, the rigid connecting pipe is connected to a rubber valve with a three- to eight-lobed structure.

[0013] Preferably, the top of the medicine storage chamber is connected to a protruding tube, which is connected and communicates with the liquid inlet pipe of the pump head. An annular mounting groove II is provided on the outer side wall of the plate, and an O-ring II is installed in the annular mounting groove II. The outer side wall of the O-ring II slides against the inner side wall of the medicine pot. The O-ring II is made of elastic self-lubricating rubber or has a Teflon / talc self-lubricating coating on its surface.

[0014] Beneficial effects

[0015] This invention relates to a clinical topical anesthetic spray device. By incorporating a plastic connecting tube with an atomizing nozzle, it facilitates stable and controllable drug delivery to patients in different positions or to devices with varying tilt angles. The device also features a flat plate and a circular spring inside the medicine bottle, which aligns with the scale on the transparent medicine bottle surface, allowing for easy monitoring of the dosage and remaining medication. Furthermore, it facilitates the delivery of the liquid medication from the medicine bag to the pump head for convenient drug administration. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of an existing spray bottle-type drug delivery device;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model;

[0018] Figure 3 This is a side sectional view of the present invention.

[0019] Figure 4 for Figure 3 Enlarged view of point A in the image;

[0020] Figure 5 When the plastic connecting pipe has metal wire embedded in its wall Figure 3 Enlarged view of point A in the image;

[0021] Figure 6 for Figure 3 Enlarged view at point B in the middle;

[0022] Figure 7 for Figure 3 Enlarged view at point C;

[0023] Figure 8 This is a schematic diagram of the control valve in this utility model;

[0024] Figure 9 This is a top view of the elastic medicine bag in Embodiment 2 of this utility model;

[0025] Figure 10 This is a structural schematic diagram of Embodiment 3 of the present invention;

[0026] Figure 11 for Figure 10 Enlarged view of point D in the middle.

[0027] In the diagram: a, Nozzle; b, Gas container; c, Connecting bracket; 1, Medicine container; 2, Pump head; 3, Plastic connecting tube; 11, Medicine storage chamber; 12, Flat plate; 13, Circular spring; 14, Elastic medicine bag; 15, Rigid connecting tube; 16, Control valve; 17, Rubber flap valve; 21, Lower cover; 22, Press cover; 23, Return spring; 24, Inlet pipe; 25, One-way valve I; 26, Outlet pipe; 27, One-way valve II; 28, Annular mounting groove I; 29, O-ring seal I; 31, Atomizing nozzle; 32, Metal wire; 111, Protruding tube; 121, Annular mounting groove II; 122, O-ring seal II; 161, Base support; 162, Cross-shaped connecting bracket; 163, Elastic rope; 164, Piston. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] like Figure 2-8As shown, this embodiment provides a technical solution: a clinical topical anesthetic spray device, including a medicine container 1. The medicine container 1 is made of transparent glass, polyethylene, polypropylene, polyurethane, or acrylic. The cross-section of the medicine container 1 is circular, rectangular, regular pentagonal, regular hexagonal, or regular octagonal. The outer wall of the medicine container 1 is marked with graduations. The capacity of the inner cavity of the pump head 2 can be pre-measured. The graduations on the medicine container 1 remove the capacity of the inner cavity of the pump head 2, or subtract the capacity of the inner cavity of the pump head 2 during calculation. A plate 12 is slidably connected to the inner wall of the medicine container 1, dividing the internal space of the medicine container 1 into an upper drug storage cavity 11 and a lower limiting cavity. The outer wall of the plate 12 is slidably connected to the inner wall of the medicine container 1 and moves up and down along the axis of the medicine container 1. The inner wall of the medicine container 1 and the outer wall of the plate 12 are smooth surfaces. In this embodiment, the outer wall of the plate 12 is provided with a Teflon self-lubricating coating. The lower surface of the plate 12 is solid. A circular spring 13 is fixedly connected to the bottom of the medicine pot 1. A pump head 2 is threadedly connected to the top of the medicine pot 1. A plastic connecting tube 3 conforming to medical standards is threadedly connected to the outlet of the pump head 2. The outer wall of the plastic connecting tube 3 near the pump head 2 has an internal thread. The outlet of the pump head 2 has an internal thread that matches the external thread of the plastic connecting tube 3. A nebulizing nozzle 31 conforming to medical standards is fixedly connected to the end of the plastic connecting tube 3 away from the pump head 2. The plastic connecting tube 3 is for single use and can be replaced after one person or one use. The pump head 2 and the medicine pot 1 are for single use, but can also be reused after cleaning and disinfection. The plastic connecting tube 3 is a thin metal tube or gooseneck tube with a plastic outer wall covered with plastic conforming to medical standards, or a plastic tube conforming to medical standards with a metal wire 32 embedded in the tube wall. The bottom of the medicine pot 1 is a screw cap, which facilitates the installation of the elastic medicine bag 14, the flat plate 12, and the circular spring 13.

[0031] Specifically, the medicine storage chamber 11 contains an elastic medicine bag 14. The upper surface of the elastic medicine bag 14 is fixedly connected to the inner top wall of the medicine pot 1. The elastic medicine bag 14 is made of elastic transparent silicone material. A rigid connecting tube 15 is provided at the top of the elastic medicine bag 14. The upper end of the rigid connecting tube 15 penetrates the inner top wall of the medicine pot 1 and is slidably sleeved on the outside of the liquid inlet pipe 24 of the pump head 2, and is connected to the liquid inlet pipe 24. A control valve 16 is provided inside the rigid connecting tube 15. The control valve 16 includes a base 161. In this embodiment, the base 161 is a circular thin plate. A cross-shaped connecting frame 162 is provided in the center of the upper surface of the base 161. The cross-shaped connecting frame 162 is composed of two cross-connected U-shaped rods. Two to eight elastic ropes 163 are evenly connected to the edge of the upper surface of 161. The upper end of the elastic rope 163 is fixedly connected to the lower end of the rigid connecting tube 15. The cross-shaped connecting frame 162 is slidably sleeved inside the rigid connecting tube 15. The piston 164 is fixedly connected to the lower middle part of the cross-shaped connecting frame 162. The outer side of the piston 164 is slidably attached to the inner sidewall of the rigid connecting tube 15. The inner wall of the rigid connecting tube 15 and the outer sidewall of the piston 164 are smooth surfaces. The lower end of the inner sidewall of the rigid connecting tube 15 is chamfered to facilitate the piston 164 to be sleeved into the rigid connecting tube 15. In this embodiment, the inner wall of the rigid connecting tube 15 and the outer sidewall of the piston 164 are provided with a Teflon / talc self-lubricating coating.

[0032] Specifically, the pump head 2 includes a lower cover 21 whose lower end is threadedly connected to the top of the medicine pot 1. The lower cover 21 is a hollow structure with an open top. A pressing cover 22 is slidably sleeved on the top of the lower cover 21. The outer side wall of the pressing cover 22 is slidably fitted with the inner side wall of the lower cover 21. A return spring 23 is fixedly connected to the lower end of the pressing cover 22. The lower end of the return spring 23 is connected to the inner bottom surface of the lower cover 21. An inlet pipe 24 is provided at the bottom of the lower cover 21. The inlet pipe 24 is slidably sleeved in the rigid connecting pipe 15. A one-way valve I 25 is provided in the inlet pipe 24, so that the medicine can only flow from the medicine pot 1 into the pump head 2, and cannot flow from the pump head 2 into the medicine pot 1. An outlet pipe 26 is provided inside the pressing cover 22. The two ends of the outlet pipe 26 are respectively connected to the inner cavity of the lower cover 21 and the plastic connecting pipe 3. An outlet pipe 26 is provided inside the outlet pipe 26. A one-way valve II27 is provided, which allows the liquid medicine to flow only from the pump head 2 into the plastic connecting pipe 3, and prevents it from flowing from the plastic connecting pipe 3 into the pump head 2. An annular mounting groove I28 is provided on the outer side wall of the lower end of the press cover 22. An O-ring I29 is installed in the annular mounting groove I28. The outer side wall of the O-ring I29 slides against the inner side wall of the lower cover 21. The O-ring I29 is made of elastic self-lubricating rubber or has a Teflon / talc self-lubricating coating on its surface. The inner side wall of the lower cover 21 and the outer side wall of the press cover 22 are smooth surfaces, and the upper surface of the press cover 22 is an anti-slip surface. In this embodiment, the inner side wall of the lower cover 21 and the outer side wall of the press cover 22 are provided with a Teflon self-lubricating coating or a talc self-lubricating coating, and the upper surface of the press cover 22 is provided with anti-slip textures or an anti-slip rubber pad.

[0033] The working process of this utility model is briefly described as follows: When not in use, the medicine pot 1, pump head 2, and plastic connecting tube 3 are separately and aseptically packaged. The elastic medicine bag 14 inside the medicine pot 1 is empty. When the device needs to be used, a certain amount of anesthetic solution is drawn using a syringe. The syringe has graduations and can draw the solution quantitatively. At the same time, the medicine pot is removed, and the tip of the syringe is inserted into the rigid connecting tube 15 at the top of the elastic medicine bag 14, thus opening the control valve 16. The lower end of the syringe tip rests on the top of the cross-shaped connecting bracket 162 of the control valve 16. The cross-shaped connecting bracket 162 moves downward, causing the piston 164 to slide out of the rigid connecting tube 15. The upper end of the cross-shaped connecting bracket 162 remains slidably sleeved within the rigid connecting tube 15. Simultaneously, the elastic rope 163 is stretched, connecting the syringe to the elastic medicine bag 14, injecting the medicine into the elastic medicine bag 14. The elastic medicine bag 14 collidees with and pushes the flat plate 12 inside the medicine container 1 downward, compressing the circular spring 13. After the medicine is injected, the syringe is removed, the elastic rope 163 retracts, and the cross-shaped connecting bracket 162 moves downward. 2. Move upwards, thereby causing piston 164 to slide upwards and fit into rigid connecting tube 15, sealing rigid connecting tube 15 to prevent the liquid medicine from spraying outwards due to the pressure generated by elastic medicine bag 14 and circular spring 13. Then, pump head 2 is installed on the top of medicine bottle 1, and the liquid inlet pipe 24 of pump head 2 slides into rigid connecting tube 15, opening control valve 16. Elastic medicine bag 14 is connected to pump head 2. Then, plastic connecting tube 3 is installed on pump head 2. Plastic connecting tube 3 is plasticized as needed to facilitate atomizing nozzle 31. Once the medication is accurately administered at the predetermined location, press the pressing cap 22 on the pump head 2 to administer the medication to the patient. This clinical surface anesthetic spray device, through the installation of a plastic connecting tube with an atomizing nozzle, facilitates stable and controllable medication administration to patients in different positions or to patients at different tilt angles of the medication administration device. By incorporating a flat plate and a circular spring inside the medicine bottle, it is easy to match the scale on the surface of the transparent medicine bottle, making it convenient to observe the dosage and remaining medication during use. It also facilitates the delivery of the medication from the medicine bag into the pump head for easy medication administration.

[0034] Example 2:

[0035] like Figure 9As shown, this embodiment provides a technical solution: a clinical surface anesthetic spray device, including a medicine bottle 1, a pump head 2 connected to the top of the medicine bottle 1, a plastic connecting tube 3 with an atomizing nozzle 31 connected to the pump head 2, a flat plate 12 slidably connected to the inner wall of the medicine bottle 1, which divides the internal space of the medicine bottle 1 into an upper drug storage chamber 11 and a lower limiting chamber, an elastic medicine bag 14 is built into the drug storage chamber 11, a rigid connecting tube 15 is provided on the top of the elastic medicine bag 14, and a rubber valve 17 with a three- to eight-valve structure is connected inside the rigid connecting tube 15. In this embodiment, the number of valves of the rubber valve 17 is four. When adding medicine, the nipple of the syringe is inserted into the rigid connecting tube 15, opening the valves on the rubber valve 17, and the medicine can be injected. After completion, the syringe is removed, and the valves on the rubber valve 17 are reset and closed. The other structures of this embodiment are the same as those of Embodiment 1.

[0036] Example 3:

[0037] like Figure 10-11 As shown, this embodiment provides a technical solution: a clinical surface anesthetic spray device, including a medicine bottle 1, a pump head 2 connected to the top of the medicine bottle 1, a plastic connecting tube 3 with an atomizing nozzle 31 connected to the pump head 2, a plate 12 slidably connected to the inner wall of the medicine bottle 1, which divides the internal space of the medicine bottle 1 into an upper drug storage chamber 11 and a lower limiting chamber, a protruding tube 111 connected to the top of the drug storage chamber 11, the protruding tube 111 being connected and communicating with the liquid inlet tube 24 of the pump head 2, an annular mounting groove II 121 being opened on the outer wall of the plate 12, an O-ring II 122 being installed in the annular mounting groove II 121, the outer wall of the O-ring II 122 being slidably fitted to the inner wall of the medicine bottle 1, the O-ring II 122 being made of elastic self-lubricating rubber material or having a Teflon / talc self-lubricating coating on the surface, the drug storage chamber 11 directly containing the drug liquid, and the other structures of this embodiment being the same as those of Embodiment 1 or 2.

[0038] As an alternative, the cross-shaped connector 162 can be replaced with a cross-shaped rod or a star-shaped rod.

[0039] As an alternative, the cross-shaped connector 162 can be replaced with a round tube with a through hole on the lower middle side wall, which is open at the top and closed at the bottom.

Claims

1. A clinical topical anesthetic spray device, comprising a medicine container (1), characterized in that: The medicine pot (1) has a sliding plate (12) on its inner side wall that divides the internal space of the medicine pot (1) into an upper medicine storage chamber (11) and a lower limiting chamber. A circular spring (13) is fixedly connected to the lower surface of the plate (12). A pump head (2) is threadedly connected to the top of the medicine pot (1). A plastic connecting tube (3) is threadedly connected to the outlet of the pump head (2). An atomizing nozzle (31) is fixedly connected to the end of the plastic connecting tube (3) away from the pump head (2).

2. The clinical topical anesthesia spray device according to claim 1, characterized in that: The medicine storage chamber (11) contains an elastic medicine bag (14). The upper surface of the elastic medicine bag (14) is fixedly connected to the inner top wall of the medicine pot (1). The top of the elastic medicine bag (14) is provided with a rigid connecting tube (15). The upper end of the rigid connecting tube (15) penetrates the inner top wall of the medicine pot (1) and is slidably sleeved on the outside of the liquid inlet pipe (24) of the pump head (2) and connected to the liquid inlet pipe (24). A control valve (16) is provided inside the rigid connecting tube (15). The control valve (16) includes a base (161). A cross-shaped connecting frame (162) is provided in the center of the upper surface of the base (161). Two to eight elastic ropes (163) are evenly connected to the edge of the upper surface of the base (161). The upper end of the elastic rope (163) is fixedly connected to the lower end of the rigid connecting tube (15). The cross-shaped connecting frame (162) is slidably sleeved in the rigid connecting tube (15). A piston (164) is fixedly connected to the lower middle part of the cross-shaped connecting frame (162). The outer side of the piston (164) is slidably attached to the inner sidewall of the rigid connecting tube (15).

3. The clinical topical anesthesia spray device according to claim 2, characterized in that: The elastic medicine bag (14) is made of elastic transparent silicone material. The inner wall of the rigid connecting tube (15) and the outer wall of the piston (164) are smooth surfaces. The lower end of the inner wall of the rigid connecting tube (15) is chamfered.

4. The clinical topical anesthetic spray device according to claim 1, characterized in that: The medicine pot (1) is made of transparent glass, polyethylene, polypropylene, polyurethane or acrylic. The cross-section of the medicine pot (1) is circular, rectangular, regular pentagon, regular hexagon or regular octagon. The outer wall of the medicine pot (1) is provided with scale.

5. A clinical topical anesthesia spray device according to claim 1, characterized in that: The inner wall of the medicine pot (1) and the outer wall of the flat plate (12) are smooth surfaces.

6. The clinical topical anesthetic spray device according to claim 1, characterized in that: The pump head (2) includes a lower cover (21) with its lower end threaded to the top of the medicine pot (1). The lower cover (21) is a hollow structure with an upper opening. A pressing cover (22) is slidably sleeved on the top of the lower cover (21). The outer side wall of the pressing cover (22) is slidably attached to the inner side wall of the lower cover (21). A return spring (23) is fixedly connected to the lower end of the pressing cover (22). An inlet pipe (24) is provided at the bottom of the lower cover (21). A one-way valve I (25) is provided in the inlet pipe (24). An outlet pipe (26) is opened inside the pressing cover (22). A one-way valve II (27) is provided in the outlet pipe (26).

7. A clinical topical anesthetic spray device according to claim 6, characterized in that: An annular mounting groove I (28) is provided on the outer side wall of the lower end of the press cover (22). An O-ring I (29) is installed in the annular mounting groove I (28). The outer side wall of the O-ring I (29) slides against the inner side wall of the lower cover (21). The O-ring I (29) is made of elastic self-lubricating rubber or has a Teflon / talc self-lubricating coating on its surface. The inner side wall of the lower cover (21) and the outer side wall of the press cover (22) are smooth surfaces. The upper surface of the press cover (22) is an anti-slip surface.

8. A clinical topical anesthetic spray device according to claim 1, characterized in that: The plastic connecting pipe (3) is a thin metal tube or gooseneck tube with plastic covering the outer wall, or a plastic tube with metal wire (32) embedded in the inner wall.

9. A clinical topical anesthetic spray device according to claim 2, characterized in that: The rigid connecting pipe (15) is internally connected to a rubber valve (17) with a three- to eight-lobed structure.

10. A clinical topical anesthetic spray device according to claim 1, characterized in that: The top of the medicine storage chamber (11) is connected to a protruding tube (111), which is connected and communicates with the liquid inlet pipe (24) of the pump head (2). The outer side wall of the plate (12) is provided with an annular mounting groove II (121), and an O-ring II (122) is installed in the annular mounting groove II (121). The outer side wall of the O-ring II (122) slides against the inner side wall of the medicine pot (1). The O-ring II (122) is made of elastic self-lubricating rubber or has a Teflon / talc self-lubricating coating on its surface.

Images