A medical spray device with a quick medicine feeding function

Abstract

This invention discloses an insertable rapid drug delivery medical spray device, belonging to the field of medical equipment technology. The invention employs a dual-tank air supply mechanism, using a first tank as a constant-pressure output container and a second tank as a high-pressure storage container. A pressure sensor monitors the pressure inside the first tank in real time, and an electronically controlled valve intelligently controls the replenishment process from the second tank to the first tank. This effectively achieves closed-loop pressure control of the output airflow, continuously providing stable and constant jet pressure. This addresses problems in traditional spray devices, such as uneven atomization, low drug adhesion, and potential secondary damage to patient tissues caused by pressure fluctuations, significantly improving the reliability and therapeutic effect of medical drug delivery.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a medical spray device for rapid, insertable drug delivery. Background Technology

[0002] In clinical diagnosis and treatment as well as routine nursing care, for the delivery of medication to special areas such as cavities and wounds, spray-type medication delivery devices have become the preferred alternative to traditional smear and drip methods because they can achieve dispersed coverage of the medication and reduce mechanical irritation to the affected area. Among them, the insertion structure is more suitable for the precise medication needs of non-external open areas such as the nasal cavity, pharynx, ear canal, and anorectal area, and is widely used in departments such as otolaryngology, proctology, dermatology, and home care.

[0003] Existing insertable medical spray devices mostly employ manual squeezing, spring-loaded, or simple air pump-based spray pressure supply structures. Their core relies on manual operation, spring elasticity decay, or the non-fixed-frequency output of the simple air pump to achieve spray application. These devices generally suffer from the technical defect of being unable to continuously apply a constant and stable spray pressure. In actual use, problems such as fluctuating pressure and intermittent spraying easily occur, making it impossible to maintain a continuous and stable pressure output. When the pressure is too high, the drug droplets are over-atomized by the high-speed airflow or directly washed away from the affected area, not only reducing the drug's adhesion rate to the target site but also potentially causing secondary damage due to the airflow impact. When the pressure is too low, the drug atomization effect is poor, the droplet size is too large, and uniform dispersion and coverage cannot be achieved, easily leading to drug accumulation in localized areas, resulting in uneven drug concentration distribution at the affected area and affecting efficacy.

[0004] Therefore, a rapid, insertable medical spray device is proposed to address some of the problems existing in the prior art. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that existing penetrating medical spray devices are difficult to continuously apply a constant and stable jet pressure, and are prone to pressure fluctuations and intermittent jetting, which affects the drug application effect. Therefore, this invention proposes a penetrating rapid drug application medical spray device.

[0006] To address the problems existing in the prior art, the present invention adopts the following technical solution:

[0007] A medical spray device for rapid application of medication via insertion includes a main body. A handle is fixedly installed at the bottom of one end of the main body. A vertically oriented channel is opened inside the main body. A connecting seat communicating with the channel is fixedly installed on the main body, and a medicine bottle is securely connected to the connecting seat. A plug communicating with the connecting seat is fixedly installed at the other end of the main body, and a spray pipe is connected inside the plug. A valve control mechanism is installed inside the main body. A dual-canister air supply mechanism is installed inside the handle. The dual-canister air supply mechanism includes a first air canister fixedly installed on the handle, the upper end of which communicates with the channel. A second air canister is fixedly installed on the handle below the first air canister. An air outlet pipe inserted into the first air canister is fixedly connected to the top of the second air canister. An electric control valve is fixedly installed inside the air outlet pipe, and a pressure sensor is fixedly installed on the air outlet pipe. An injection mechanism is installed at the lower end of the second air canister.

[0008] Preferably, a threaded sleeve is fitted on one end of the nozzle near the connector, and the threaded sleeve is screwed onto the outside of the connector.

[0009] Preferably, the end of the nozzle away from the connector is fixedly installed with an end cap, and the end cap is configured as a spherical structure.

[0010] Preferably, the valve control mechanism includes a cavity tube that is laterally opened in the main body of the device, and the cavity tube is intersecting and communicating with the channel. A valve block is slidably installed in the cavity tube, and a first screw is connected in the valve block. One end of the first screw is connected to a connecting rod that extends to the outside of the main body of the device, and the end of the connecting rod away from the first screw is connected to a connector. A latch is hinged on the main body of the device, and the latch is engaged between the connecting rod and the connector. A torsion spring is installed at the junction of the latch and the main body of the device.

[0011] Preferably, the valve block is threadedly connected to the first screw, the first screw is rotatably connected to the connecting rod, a spline rod is fixedly installed at the other end of the first screw, and a spline cylinder extending to the outside of the device body is slidably sleeved on the outside of the spline rod. A first slide bar arranged parallel to the first screw is fixedly installed on the valve block, and a slide groove adapted to the first slide bar is opened in the cavity tube.

[0012] Preferably, the connector and the cavity tube are on the same straight line, a rod is slidably inserted into the connector, a constriction port adapted to the rod is provided in the nozzle, one end of the rod near the constriction port is set as a conical structure, and the other end of the rod passes through the connector and is connected to the connecting rod.

[0013] Preferably, the connector is rotatably connected to the connecting rod, the insert rod is threadedly connected to the connector, a slider is fixedly installed on the insert rod, a first guide bar is fixedly installed inside the connecting rod and slidably connected to the slider, and the first guide bar is arranged parallel to the insert rod. The connecting rod is slidably installed inside the cavity tube, and a second slide bar that is slidably adapted to slide inside the cavity tube is fixedly installed on the connecting rod.

[0014] Preferably, the gas injection mechanism includes a cylinder fixedly installed inside the second gas tank, with an air inlet pipe extending to the outside of the second gas tank fixedly connected to the upper end of the cylinder, an air outlet communicating with the inside of the second gas tank fixedly installed at the upper end of the cylinder, corresponding one-way valves adapted to be installed in both the air inlet pipe and the air outlet, a filter element installed in the air inlet pipe, a second screw rotatably installed inside the cylinder, a piston block threadedly connected to the second screw slidably installed inside the cylinder, and a second guide bar arranged parallel to the second screw fixedly installed inside the cylinder, with the piston block slidably engaged with the second guide bar.

[0015] Preferably, a housing is fixedly installed at the lower end of the second gas tank, one end of the second screw extends into the housing, a winding wheel is fixedly installed on the second screw and a pull rope is wound on the winding wheel, and a spring is installed inside the housing and fixedly connected between the second screw and the housing.

[0016] Preferably, a sleeve is fixedly installed on the main body of the device, and a positioning rod parallel to the nozzle is slidably inserted into the sleeve. A bolt pointing vertically to the positioning rod is threaded onto the sleeve. A contact head is fixedly installed at one end of the positioning rod near its end, and the surface of the contact head is covered with a skin-friendly layer.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. In this invention, by setting up a dual-tank air supply mechanism, the first air tank is used as a constant pressure output container and the second air tank is used as a high pressure storage container. The pressure in the first air tank is monitored in real time by a pressure sensor. The process of the second air tank replenishing the first air tank is intelligently controlled by an electronically controlled valve. This can effectively realize the closed-loop pressure control of the output airflow of the spray device, and can continuously provide a stable and constant jet pressure. This helps to solve the problems of uneven atomization, low drug adhesion rate and possible secondary damage to patient tissue caused by pressure fluctuations in traditional spray devices, and significantly improves the reliability and therapeutic effect of medical drug application.

[0019] 2. In this invention, the converging orifice inside the nozzle is controlled by a linkage between the insert rod and the valve control mechanism, so that the opening of the airflow channel and the opening of the atomization gap are synchronized. With the precise cooperation of the trumpet-shaped structure of the converging orifice and the conical structure at the end of the insert rod, a high-speed vortex shear field can be formed at the small opening of the converging orifice, which can efficiently and finely atomize the liquid medicine carried by the airflow. This is conducive to producing a liquid medicine mist with uniform particle size and diffuse distribution. It can not only effectively improve the atomization quality of the liquid medicine during the application process, but also ensure the ease of operation and the consistency of the atomization process through mechanical linkage.

[0020] 3. In this invention, by setting a sliding, adjustable and locking positioning rod, and fixing the contact head with a skin-friendly layer on the surface to the positioning rod, the operator can accurately set the depth of the nozzle insertion into the cavity in advance. This helps to avoid damage to the patient's tissue or contact with sensitive areas due to excessive insertion during the medication application process. At the same time, it can also effectively prevent the medication from being sprayed in place due to shallow insertion. This enhances the stability of the operation process and the patient's comfort, and is especially suitable for medication application scenarios in cavities of varying depths, such as the nasal cavity and ear canal. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a perspective view of the present invention;

[0023] Figure 2 This is an exploded view of the present invention;

[0024] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is an exploded view of the dual-tank gas supply mechanism and gas injection mechanism of the present invention;

[0026] Figure 5 This is a top view of the present invention;

[0027] Figure 6 For the present invention Figure 5 Sectional view at point BB;

[0028] Figure 7 For the present invention Figure 6 Enlarged view of point C in the middle;

[0029] Figure 8 For the present invention Figure 6 Enlarged view of point D in the middle;

[0030] Figure 9 This is a front view of the present invention;

[0031] Figure 10 For the present invention Figure 9 Sectional view at EE.

[0032] Number in the diagram:

[0033] 1. Main body of the device; 11. Handle; 12. Channel; 13. Connector; 14. Medicine bottle; 15. Connector; 16. Nozzle; 17. Threaded sleeve; 18. End;

[0034] 2. Cavity tube; 21. Valve block; 22. First screw; 23. Connecting rod; 24. Connector; 25. Lever; 26. Splined rod; 27. Splined cylinder; 28. First slide bar;

[0035] 3. Insert rod; 31. Diameter reduction port; 32. Slider; 33. First guide bar; 34. Second slide bar;

[0036] 4. First gas tank; 41. Second gas tank; 42. Gas outlet pipe; 43. Electrically controlled valve; 44. Pressure sensor;

[0037] 5. Cylinder; 51. Inlet pipe; 52. Outlet; 53. Filter element; 54. Second screw; 55. Piston block; 56. Second guide bar; 57. Outer shell; 58. Winding wheel; 59. Pull rope; 510. Spring;

[0038] 6. Sleeve; 61. Positioning rod; 62. Bolt; 63. Contact head. Detailed Implementation

[0039] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0040] Example: This example provides a retractable, rapid medication application medical spray device. See [link to example]. Figure 1 - Figure 10 Specifically, the device includes a main body 1, with a handle 11 fixedly installed at one end of the bottom. A vertically oriented channel 12 is formed inside the main body 1. A connecting seat 13, communicating with the channel 12, is fixedly installed on the main body 1, and a medicine bottle 14 is securely connected to the connecting seat 13. A connector 15, communicating with the connecting seat 13, is fixedly installed at the other end of the main body 1, and a spray pipe 16 is connected inside the connector 15. A valve control mechanism is installed inside the main body 1. The valve control mechanism includes a cavity 2 horizontally formed inside the main body 1, which intersects with the channel 12. A valve block 21 is slidably installed inside the cavity 2, and a first screw is connected inside the valve block 21. The first screw 22 is connected to a connecting rod 23 extending to the outside of the main body 1. The end of the connecting rod 23 away from the first screw 22 is connected to a connector 24. A latch 25 is hinged on the main body 1 and is engaged between the connecting rod 23 and the connector 24. A torsion spring is installed at the junction of the latch 25 and the main body 1. Under normal conditions, the valve block 21 is blocked at the connection between the channel 12 and the cavity 2. By moving the latch 25 to overcome the elastic support of the torsion spring, the valve block 21 can be moved to open the channel 12. The latch 25 controls the opening and closing of the channel 12, realizing the rapid opening and closing of the air path and the instant start and stop of the spray. The operation is intuitive and the response is rapid.

[0041] The connector 15 and the cavity tube 2 are on the same straight line. The connector 15 has a sliding rod 3 inserted inside. The nozzle 16 is provided with a converging port 31 that matches the rod 3. One end of the rod 3 near the converging port 31 is set as a conical structure. The other end of the rod 3 passes through the connector 24 and is connected to the connecting rod 23. When the lever 25 moves, it can drive the rod 3 to move synchronously and control the opening and closing of the converging port 31. When the channel 12 is opened, the converging port 31 opens synchronously to form micro-droplets with uniform particle size.

[0042] The handle 11 is equipped with a dual-canister air supply mechanism, which includes a first air canister 4 fixedly installed on the handle 11. The upper end of the first air canister 4 is connected to the channel 12. A second air canister 41 is fixedly installed on the handle 11 below the first air canister 4. The top of the second air canister 41 is fixedly connected to an air outlet pipe 42 inserted into the first air canister 4. An electric control valve 43 is fixedly installed inside the air outlet pipe 42. A pressure sensor 44 is fixedly installed on the air outlet pipe 42. An air injection mechanism is installed at the lower end of the second air canister 41. The handle 11 is equipped with a control module and a battery module. The air pressure in the first air canister 4 is constant, while the air pressure in the second air canister 41 is under high pressure. When the channel 12 is opened, the gas in the first air canister 4 can be released. The gas flows below the connector 13, carrying the liquid medicine in the medicine bottle 14. It is finely atomized at the inlet 31 and finally sprayed out through the front end of the nozzle 16 to achieve precise medicine application. The pressure sensor 44 monitors the pressure inside the first gas tank 4 in real time. When the pressure is lower than the set threshold, the control valve 43 is opened, and the high-pressure gas in the second gas tank 41 quickly replenishes the pressure of the first gas tank 4 through the outlet pipe 42. Then the control valve 43 is closed, thereby maintaining the dynamic stability of the working pressure inside the first gas tank 4.

[0043] The gas injection mechanism includes a cylinder 5 fixedly installed inside a second gas tank 41. An air inlet pipe 51 extending to the outside of the second gas tank 41 is fixedly connected to the upper end of the cylinder 5. An air outlet 52 communicating with the inside of the second gas tank 41 is fixedly installed at the upper end of the cylinder 5. Corresponding one-way valves are fitted inside both the air inlet pipe 51 and the air outlet 52. A filter element 53 is installed inside the air inlet pipe 51. A second screw 54 is rotatably installed inside the cylinder 5. A piston block 55 threadedly connected to the second screw 54 is slidably installed inside the cylinder 5. A second guide bar 56, parallel to the second screw 54, is fixedly installed inside the cylinder 5. The piston block 55 and the second guide bar 56 are slidably engaged. A housing 57 is fixedly installed at the lower end of the second gas tank 41. One end of the second screw 54 extends into the housing 57. A filter element fixedly installed on the second screw 54 is mounted on the housing 57. The cylinder 5 has an inner reel 58 with a pull rope 59 wound on it. Inside the outer casing 57, a spring 510 is installed and fixedly connected between the second screw 54 and the outer casing 57. Pulling the pull rope 59 can drive the reel 58 to rotate the second screw 54, which in turn drives the piston block 55 to move upward, discharging the gas in the cylinder 5 into the second gas tank 41 through the outlet 52. During this process, the spring 510 is wound up and then the pull rope 59 is released. With the spring 510's rebound, the second screw 54 can be reversed. The pull rope 59 is wound up in an orderly manner on the reel 58, and the piston block 55 is driven to move downward. The filtered clean gas from the external environment can be drawn into the cylinder 5 through the air inlet pipe 51 to prepare for the next compression gas supply. This cycle can be repeated to manually fill the second gas tank 41 with high-pressure clean gas.

[0044] In the specific implementation process, such as Figure 2 and Figure 7 As shown, a threaded sleeve 17 is fitted on one end of the nozzle 16 near the connector 15, and the threaded sleeve 17 is threadedly screwed onto the outside of the connector 15. The threaded connection between the threaded sleeve 17 and the connector 15 makes the installation and disassembly of the nozzle 16 convenient, and facilitates the replacement of different lengths and angles of the dedicated nozzle 16 according to different application sites. It also facilitates cleaning and disinfection after use.

[0045] In the specific implementation process, such as Figure 1 and Figure 6 As shown, an end cap 18 is fixedly installed at the end of the nozzle 16 away from the connector 15, and the end cap 18 is set as a spherical structure. The surface of the spherical end cap 18 is smooth and round, which can reduce scratches and irritation to the mucosal tissue when it is inserted into the cavity, and is conducive to improving the patient's tolerance and comfort during insertion dressing change.

[0046] In the specific implementation process, such as Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, valve block 21 is threadedly connected to first screw 22, and first screw 22 is rotatably connected to connecting rod 23. Spline rod 26 is fixedly installed at the other end of first screw 22, and spline cylinder 27 extending to the outside of device body 1 is slidably sleeved on the outside of spline rod 26. First slide bar 28 is fixedly installed on valve block 21 and arranged parallel to first screw 22. Slide groove adapted to first slide bar 28 is opened in cavity tube 2. The above structure can be used to adjust the opening range of channel 12 after lever 25 is turned. By rotating spline cylinder 27, first screw 22 can be driven to rotate. Since valve block 21 cannot rotate due to the restriction between first slide bar 28 and slide groove of cavity tube 2, rotation of first screw 22 will be converted into linear movement of valve block 21 along cavity tube 2, thereby finely adjusting the position of valve block 21 relative to the opening of channel 12, that is, adjusting the opening cross-sectional area of ​​airflow passage, and realizing flexible adjustment of output airflow and initial pressure.

[0047] In the specific implementation process, such as Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, connector 24 is rotatably connected to connecting rod 23, and insert rod 3 is threadedly connected to connector 24. A slider 32 is fixedly installed on insert rod 3. A first guide bar 33, which is slidably connected to slider 32, is fixedly installed inside connecting rod 23 and is parallel to insert rod 3. Connecting rod 23 is slidably installed inside cavity tube 2. A second slide bar 34, which is slidably adapted to slide inside cavity tube 2, is fixedly installed on connecting rod 23. The above structure can be used to adjust the opening range of inlet 31. During the adjustment process, when connector 24 is rotated, insert rod 3 cannot rotate due to the restriction of slider 32 and first guide bar 33. The rotation of connector 24 will be converted into linear movement of insert rod 3 along its axis. Thus, the gap size between the conical end of insert rod 3 and inlet 31 can be finely adjusted independently of the position of valve block 21. This structure allows the operator to optimize the atomization effect of the liquid sprayed out according to the viscosity of the liquid and the required atomization particle size.

[0048] In the specific implementation process, such as Figure 1 , Figure 9 and Figure 10As shown, a sleeve 6 is fixedly installed on the main body 1 of the device, and a positioning rod 61 parallel to the nozzle 16 is slidably inserted into the sleeve 6. A bolt 62 perpendicular to the positioning rod 61 is threaded onto the sleeve 6. A contact head 63 is fixedly installed at the end of the positioning rod 61 near the end 18, and the surface of the contact head 63 is covered with a skin-friendly layer. The insertion depth of the nozzle 16 can be positioned by the positioning rod 61. During the positioning adjustment process, the operator can loosen the bolt 62 and slide along the sleeve 6 to adjust the extension length of the positioning rod 61, so that the position of the contact head 63 relative to the end 18 of the nozzle 16 changes. After adjusting to the appropriate depth, the bolt 62 is tightened to fix the positioning rod 61. When applying medicine, when the contact head 63 contacts a specific position on the body surface or cavity opening, it indicates that the front end of the nozzle 16 has reached the preset depth, ensuring the accuracy and repeatability of the medicine application position. During use, the skin-friendly layer is attached to the contact head 63 by adhesive. The skin-friendly layer is a disposable structure, which is convenient for flexible replacement and helps to avoid cross-infection.

[0049] Specifically, the working principle of this invention is as follows:

[0050] Before use, the second gas tank 41 is first inflated by the air injection mechanism. During this process, the operator repeatedly pulls the pull rope 59 to drive the piston block 55 to reciprocate inside the cylinder 5, compressing the filtered clean air and pumping it into the second gas tank 41, making its pressure higher than the working pressure of the first gas tank 4. According to the treatment needs, the appropriate medicine bottle 14 can be replaced on the connecting seat 13, and the appropriate nozzle 16 can be installed on the plug connector 15 through the threaded sleeve 17. By rotating the spline cylinder 27 and the connector 24, the position of the valve block 21 and the gap between the plug rod 3 and the inlet 31 can be pre-adjusted. Then, the operator slides the positioning rod 61 to the required depth scale and locks it with the bolt 62.

[0051] During medication administration, the operator holds the handle 11 and inserts the tip of the nozzle 16 into the target cavity until the contact head 63 at the front end of the positioning rod 61 gently touches the patient's skin or the cavity opening. At this point, the operator pulls the lever 25, which moves the connecting rod 23, the connector 24, and the insertion rod 3 together, causing the tip of the insertion rod 3 to move away from the inlet 31. Simultaneously, the connecting rod 23 moves the valve block 21 through the first screw 22, opening the channel 12. The stable pressure gas in the first gas tank 4 is immediately released and forms a negative pressure as it flows through the connecting seat 13. The pressure draws the liquid medicine from the medicine bottle 14. The gas-liquid mixture is efficiently atomized as it passes through the precision gap formed by the converging port 31 and the insert rod 3. Finally, the medicine mist is sprayed out from the front end of the nozzle 16 and evenly covers the target area. During the entire spraying process, the closed-loop system composed of the air pressure sensor 44 and the electronic control valve 43 maintains the pressure of the first air tank 4 stable. After releasing the lever 25, the components reset under the action of the torsion spring, and the spraying stops. After use, the nozzle 16 and the medicine bottle 14 can be easily disassembled for cleaning or replacement for the next use.

[0052] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A medical spray device for rapid application of medication via insertion, comprising a device body (1), characterized in that: A handle (11) is fixedly installed at the bottom of one end of the main body (1) of the device. A vertically arranged channel (12) is opened inside the main body (1). A connecting seat (13) communicating with the channel (12) is fixedly installed on the main body (1), and a medicine bottle (14) is fastened to the connecting seat (13). A plug (15) communicating with the connecting seat (13) is fixedly installed at the other end of the main body (1), and a nozzle (16) is connected inside the plug (15). A valve control mechanism is installed inside the main body (1), and a dual-tank gas supply machine is installed inside the handle (11). The structure includes a first gas tank (4) fixedly installed on the handle (11), the upper end of the first gas tank (4) being connected to the channel (12), a second gas tank (41) fixedly installed on the handle (11) below the first gas tank (4), and an outlet pipe (42) inserted into the first gas tank (4) fixedly connected to the top of the second gas tank (41). An electric control valve (43) is fixedly installed inside the outlet pipe (42), and a pressure sensor (44) is fixedly installed on the outlet pipe (42). An air injection mechanism is installed at the lower end of the second gas tank (41).

2. The medical spray device for rapid drug delivery via insertion according to claim 1, characterized in that: The nozzle (16) is fitted with a threaded sleeve (17) at one end near the connector (15), and the threaded sleeve (17) is threaded onto the outside of the connector (15).

3. The medical spray device for rapid drug delivery via insertion according to claim 1, characterized in that: The nozzle (16) has an end cap (18) fixedly installed at the end away from the connector (15), and the end cap (18) is configured as a spherical structure.

4. The medical spray device for rapid drug delivery via insertion according to claim 1, characterized in that: The valve control mechanism includes a cavity (2) that is laterally opened in the main body (1) of the device, and the cavity (2) is cross-connected with the channel (12). A valve block (21) is slidably installed in the cavity (2), and a first screw (22) is connected in the valve block (21). One end of the first screw (22) is connected to a connecting rod (23) that extends to the outside of the main body (1), and a connector (24) is connected to the end of the connecting rod (23) away from the first screw (22). A buckle (25) is hinged on the main body (1), and the buckle (25) is engaged between the connecting rod (23) and the connector (24). A torsion spring is installed at the junction of the buckle (25) and the main body (1).

5. A medical spray device for rapid drug delivery via insertion, as described in claim 4, characterized in that: The valve block (21) is threadedly connected to the first screw (22), the first screw (22) is rotatably connected to the connecting rod (23), the other end of the first screw (22) is fixedly installed with a spline rod (26), and a spline cylinder (27) extending to the outside of the device body (1) is slidably sleeved on the outside of the spline rod (26). The valve block (21) is fixedly installed with a first slide bar (28) arranged parallel to the first screw (22), and a slide groove adapted to the first slide bar (28) is opened in the cavity tube (2).

6. The medical spray device for rapid drug delivery via insertion according to claim 4, characterized in that: The connector (15) and the cavity (2) are on the same straight line. A rod (3) is slidably inserted inside the connector (15). A converging port (31) adapted to the rod (3) is provided inside the nozzle (16). One end of the rod (3) near the converging port (31) is set as a conical structure. The other end of the rod (3) passes through the connector (24) and is connected to the connecting rod (23).

7. A medical spray device for rapid drug delivery via insertion according to claim 6, characterized in that: The connector (24) is rotatably connected to the connecting rod (23), the insert rod (3) is threadedly connected to the connector (24), a slider (32) is fixedly installed on the insert rod (3), a first guide bar (33) is fixedly installed inside the connecting rod (23) and slidably connected to the slider (32), and the first guide bar (33) is parallel to the insert rod (3), the connecting rod (23) is slidably installed inside the cavity tube (2), and a second slide bar (34) is fixedly installed on the connecting rod (23) and slidably adapted to the cavity tube (2).

8. The medical spray device for rapid drug delivery via insertion according to claim 1, characterized in that: The gas injection mechanism includes a cylinder (5) fixedly installed inside the second gas tank (41), and an air inlet pipe (51) extending to the outside of the second gas tank (41) is fixedly connected to the upper end of the cylinder (5). An air outlet (52) communicating with the inside of the second gas tank (41) is fixedly installed at the upper end of the cylinder (5). A corresponding one-way valve is adapted to be installed in both the air inlet pipe (51) and the air outlet (52). A filter element (53) is installed in the air inlet pipe (51). A second screw (54) is rotatably installed in the cylinder (5). A piston block (55) threadedly connected to the second screw (54) is slidably installed in the cylinder (5). A second guide bar (56) arranged parallel to the second screw (54) is fixedly installed in the cylinder (5). The piston block (55) and the second guide bar (56) are slidably engaged.

9. A medical spray device for rapid drug delivery via insertion according to claim 8, characterized in that: The lower end of the second gas tank (41) is fixedly installed with a housing (57), one end of the second screw (54) extends into the housing (57), a winding wheel (58) is fixedly installed on the second screw (54) and a pull rope (59) is wound on the winding wheel (58), and a spring (510) is installed inside the housing (57) and fixedly connected between the second screw (54) and the housing (57).

10. A medical spray device for rapid drug delivery via insertion according to claim 1, characterized in that: A sleeve (6) is fixedly installed on the main body (1) of the device, and a positioning rod (61) parallel to the nozzle (16) is slidably inserted into the sleeve (6). A bolt (62) pointing vertically to the positioning rod (61) is threaded onto the sleeve (6). A contact head (63) is fixedly installed at one end of the positioning rod (61) near the end (18), and the surface of the contact head (63) is covered with a skin-friendly layer.

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