An accurately controllable respiratory tract administration device

Abstract

The application provides a precisely controlled respiratory tract drug delivery device, which comprises a shell, a drug delivery device arranged on the shell, a sliding groove arranged on the shell, a first scale line arranged on the sliding groove, a drug delivery tube arranged in the shell, one end of the drug delivery tube being connected with the drug delivery device, the other end of the drug delivery tube being provided with a drug delivery head and extending out of the shell, a pipe feeding mechanism arranged in the shell and connected with the drug delivery tube, a pointer slidingly arranged in the sliding groove, the pointer being connected with the pipe feeding mechanism through a driving mechanism, and the pipe feeding mechanism feeding the drug delivery tube and driving the pointer to slide in the sliding groove through the driving mechanism. The device can precisely control the length of the drug delivery tube extending into the respiratory tract, so that the drug can be delivered to the specified position to administer the patient, and the drug delivery efficiency and medical effect are effectively improved.

Description

Technical Field

[0001] The present invention specifically relates to a precisely controllable respiratory drug delivery device. Background Technology

[0002] Oral and injection are common methods of drug administration. However, some drugs are difficult to administer via traditional methods, such as those that cause significant gastrointestinal irritation or have low bioavailability. In these cases, respiratory administration is selectively used. Traditional respiratory administration often involves nebulizers with face masks, but this method is only suitable for administering medication to the entire respiratory system and cannot precisely target the location of respiratory diseases.

[0003] For example, Chinese invention patent No. 202110406717.6 provides a diffusion-type respiratory medicine drug delivery device that can improve drug coverage area. When using the device, the infusion tube and the drug delivery head are inserted into the patient's respiratory tract, and the drug is sprayed to the designated location in the respiratory tract through the nebulizer nozzle to deliver the drug to the respiratory tract. Compared with the traditional mask drug delivery method, it can deliver the drug to the lesion location in the respiratory tract without supplying the drug to the entire respiratory tract.

[0004] However, most existing respiratory drug delivery devices rely on the experience of medical staff to adjust the length of the drug delivery tube inserted into the respiratory tract. This makes it inconvenient to precisely control the length of the drug delivery tube inserted into the respiratory tract, thus failing to deliver the drug to the designated location for administration to the patient, resulting in a decrease in drug delivery efficiency and medical efficacy. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a precisely controllable respiratory drug delivery device. This addresses the technical problem mentioned in the background section: most existing respiratory drug delivery devices rely on experience to adjust the length of the drug delivery tube extending into the respiratory tract, making it inconvenient to precisely control the length of the drug delivery tube. Consequently, the drugs cannot be delivered to the designated location for administration, resulting in reduced drug delivery efficiency and medical efficacy.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a precisely controllable respiratory drug delivery device, comprising:

[0007] The housing is equipped with a drug supply device, and a sliding groove is also provided on the housing, with a first scale line provided on the sliding groove;

[0008] A drug supply tube is disposed inside the housing, with one end connected to the drug supply device and the other end provided with a drug delivery head that extends out of the housing;

[0009] A tube delivery mechanism, disposed within the housing and connected to the drug delivery tube, for delivering the drug through the drug delivery tube; and

[0010] The pointer is slidably mounted in the groove and connected to the tube feeding mechanism via a drive mechanism. When the tube feeding mechanism delivers the medicine tube, it drives the pointer to slide in the groove via the drive mechanism.

[0011] In a preferred embodiment, the tube feeding mechanism includes:

[0012] Two sets of tube feed rollers are provided, and both sets are rotatably disposed inside the housing. A gap is formed between the two sets of tube feed rollers for the drug tube to pass through. The drive mechanism is connected to one set of tube feed rollers. When one set of tube feed rollers rotates, the pointer is driven to slide through the drive mechanism.

[0013] Two sets of anti-slip sleeves are provided, each sleeved onto one of the two sets of feed rollers and abutting against the drug supply tube; and

[0014] An operating component is mounted on the housing and connected to the two sets of pipe feed rollers to drive the two sets of pipe feed rollers to rotate in opposite directions.

[0015] In a preferred embodiment, the operating component includes:

[0016] The transmission gears are provided in two sets, and are respectively fixedly mounted on the two sets of tube feeding wheels, and the two sets of transmission gears mesh with each other;

[0017] The first drive gear is fixedly mounted on one of the set of tube feeding wheels;

[0018] The second drive gear is rotatably disposed within the housing and meshes with the first drive gear; and

[0019] A rocker wheel is disposed outside the housing and is coaxially connected to the second drive gear.

[0020] In a preferred embodiment, the rocker wheel is provided with an indicator line, and the housing is provided with a second scale line circumferentially arranged along the periphery of the rocker wheel.

[0021] In a preferred embodiment, the drive mechanism includes:

[0022] The worm gear is rotatably mounted inside the housing;

[0023] A transmission assembly is connected to the tube feed wheel and the worm gear to convert the rotation of the tube feed wheel into driving the rotation of the worm gear;

[0024] A worm gear, rotatably disposed within the housing, and meshing with the worm; and

[0025] A lead screw is provided inside the housing, with a mounting rod arranged parallel to the extension direction of the slide groove. The lead screw is slidably sleeved on the mounting rod and screwed to the worm gear. The pointer is located at the end of the lead screw.

[0026] In a preferred embodiment, the transmission assembly includes:

[0027] The first synchronizing pulley is mounted on the tube feeding pulley; and

[0028] The second synchronous pulley is located at the end of the worm gear and is connected to the first synchronous pulley via a synchronous belt.

[0029] In a preferred embodiment, the housing is provided with two sets of slidably mounted movable frames, each movable frame being provided with multiple sets of mounting seats, each mounting seat being provided with multiple sets of tensioning wheels, the drug supply tube being sequentially wound around the multiple sets of tensioning wheels, and the housing being provided with multiple sets of guide rails, the multiple sets of mounting seats being slidably disposed within the multiple sets of guide rails respectively.

[0030] In a preferred embodiment, a linkage mechanism is provided inside the housing. The linkage mechanism is connected to the tube feeding wheel and the movable frame. During the rotation of the two sets of tube feeding wheels, the two sets of movable frames are driven to slide in opposite directions through the linkage mechanism.

[0031] In a preferred embodiment, the linkage mechanism includes:

[0032] The linkage gears are provided in two sets. One set of the linkage gears is set on the second synchronous pulley, and the other set of linkage gears is connected to one set of the tube feeding pulleys through the transmission assembly.

[0033] Two sets of drive plates are arranged opposite to each other and can be slidably disposed within the housing. Each drive plate has an inclined groove, and each set of movable frames is equipped with a drive column, which is respectively engaged within the two sets of inclined grooves.

[0034] Two sets of racks are provided, which are arranged on the drive plate along the sliding direction of the drive plate and respectively mesh with the two sets of linkage gears.

[0035] In a preferred embodiment, the housing is provided with two sets of opposing dental supports, and the drug delivery tube is disposed between the two sets of dental supports.

[0036] Compared with the prior art, the present invention has the following beneficial effects:

[0037] 1. In use, this device delivers the medication via a delivery mechanism, inserting the drug delivery head into the patient's airway. The medication is then delivered to the head via a dispensing device. During delivery, the delivery mechanism drives a pointer to slide within a groove. The pointer's alignment with the first graduation mark allows for precise measurement of the distance the medication delivery tube extends into the patient's airway. This eliminates the need for medical personnel to adjust the tube's insertion length based on experience, facilitating accurate control and ensuring the medication is delivered directly to the designated location, thus significantly improving drug delivery efficiency and therapeutic effectiveness.

[0038] 2. During use, the device rotates a rocker wheel to drive a second drive gear. This second drive gear, in turn, meshes with a first drive gear to drive a tube-feeding wheel. The meshing of these two sets of transmission gears causes the two tube-feeding wheels to rotate in opposite directions, ensuring stable delivery of the medication. Furthermore, the tube-feeding wheel's rotation drives two sets of linkage gears via a transmission assembly. These linkage gears, in turn, mesh with a rack to drive a sliding drive plate. This sliding motion, through the engagement of a slant groove and a drive column, drives two sets of movable frames to open and close in opposite directions. This causes multiple tensioning wheels to move, tensioning the medication tube with a constant force to prevent deformation and narrowing of the tubing. This ensures the medication tube remains neatly arranged within the housing, effectively preventing it from becoming tangled and causing blockages, thus ensuring stable drug delivery. Attached Figure Description

[0039] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0040] Figure 1 A three-dimensional structural schematic diagram of a precisely controllable respiratory drug delivery device provided by the present invention;

[0041] Figure 2 This is a schematic diagram of the internal structure of a precisely controllable respiratory drug delivery device according to the present invention.

[0042] Figure 3 This is a schematic diagram of the housing structure in a precisely controllable respiratory drug delivery device of the present invention;

[0043] Figure 4 This is a schematic diagram of the connection structure between the movable frame and the delivery wheel in a precisely adjustable respiratory drug delivery device of the present invention. Figure 1 ;

[0044] Figure 5This is a schematic diagram of the connection structure between the movable frame and the delivery wheel in a precisely adjustable respiratory drug delivery device of the present invention. Figure 2 ;

[0045] Figure 6 This is a schematic diagram of the pointer structure in a precisely controllable respiratory drug delivery device of the present invention.

[0046] Figure label:

[0047] 101. Housing; 102. Guide rail; 103. Mounting rod; 104. Slide groove; 105. First scale line; 106. Second scale line; 107. Tooth support frame;

[0048] 201. Movable frame; 202. Mounting base; 203. Tensioner wheel; 204. Drug supply tube; 205. Drug supply device; 206. Drug delivery head;

[0049] 301. Pipe feeder; 302. Anti-slip sleeve; 303. Transmission gear; 304. First synchronizing pulley;

[0050] 401. Second synchronous pulley; 402. Synchronous belt; 403. Linkage gear; 404. Drive plate; 405. Rack; 406. Inclined groove; 407. Drive column;

[0051] 501. Worm gear; 502. Worm wheel; 503. Lead screw; 504. Pointer;

[0052] 601. First drive gear; 602. Second drive gear; 603. Rocker wheel; 604. Indicator line. Detailed Implementation

[0053] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0054] Example:

[0055] like Figure 1 , 2As shown in Figure 4, the present invention provides a precisely controllable respiratory drug delivery device, comprising a housing 101, on which a drug delivery device 205 and a drug delivery tube 204 are disposed. One end of the drug delivery tube 204 is connected to the drug delivery device 205, and the other end is provided with a drug delivery head 206 extending out of the housing 101. A delivery mechanism connected to the drug delivery tube 204 is disposed inside the housing 101, and the drug delivery tube 204 is delivered through the delivery mechanism. The delivery mechanism includes two sets of rotatable delivery wheels 301 disposed inside the housing 101, forming a gap between the two sets of delivery wheels 301 through which the drug delivery tube 204 passes. Each set of delivery wheels 301 is fitted with an anti-slip sleeve 302, which abuts against the drug delivery tube 204. An operating component connected to the two sets of delivery wheels 301 is disposed on the housing 101, and the operating component drives the two sets of delivery wheels 301 to rotate in opposite directions.

[0056] The operating component includes two sets of transmission gears 303 fixedly mounted on two sets of tube feeding wheels 301. The two sets of transmission gears 303 mesh with each other. A first drive gear 601 is fixedly mounted on one set of tube feeding wheels 301. A second drive gear 602 is rotatably mounted inside the housing 101 and meshes with the first drive gear 601. A rocker wheel 603 is also provided outside the housing 101 and is coaxially connected to the second drive gear 602.

[0057] The housing 101 is provided with two sets of opposing dental supports 107, and the drug delivery tube 204 is disposed between the two sets of dental supports 107. During use, the patient places their upper and lower teeth into the two sets of dental supports 107 respectively, which supports the patient's oral cavity and prevents the patient's oral cavity from closing during the drug delivery process. At the same time, it also helps to fix the device relatively in the patient's oral cavity.

[0058] Rotating the rocker wheel 603 drives the second drive gear 602 to rotate. During rotation, the second drive gear 602 meshes with the first drive gear 601, driving one set of delivery wheels 301 to rotate. This, in turn, through the meshing of the two sets of transmission gears 303, causes the two sets of delivery wheels 301 to rotate in opposite directions, thus delivering medication to the drug delivery tube 204. This allows the drug delivery head 206 to enter the patient's airway, where the drug delivery device 205 delivers medication to the drug delivery head 206, thereby administering medication to the respiratory tract. The internal structures of the drug delivery device 205 and the drug delivery head 206 are conventional technologies in the art and will not be described further here.

[0059] Furthermore, the tooth ratio of the first drive gear 601 and the second drive gear 602 can be controlled according to the needs during the production process. If the number of teeth of the first drive gear 601 is greater than that of the second drive gear 602, the conveying length of the drug supply tube 204 can be controlled more precisely. If the number of teeth of the first drive gear 601 is less than that of the second drive gear 602, the speed of conveying the drug supply tube 204 can be effectively increased. The selection can be made according to the actual needs.

[0060] like Figure 1 , 5 As shown in Figure 6, in this embodiment, a sliding groove 104 is also provided on the housing 101. A first scale line 105 is provided on the sliding groove 104. A pointer 504 is slidably mounted in the sliding groove 104. The pointer 504 is connected to the tube feeding mechanism through a drive mechanism. When the tube feeding mechanism delivers the medicine supply tube 204, it drives the pointer 504 to slide in the sliding groove 104 through the drive mechanism.

[0061] The drive mechanism is connected to one set of tube feed rollers 301. When one set of tube feed rollers 301 rotates, it drives the pointer 504 to slide through the drive mechanism. The drive mechanism includes a worm gear 501 rotatably disposed within the housing 101. The worm gear 501 is connected to the tube feed rollers 301 through a transmission assembly to convert the rotation of the tube feed rollers 301 into the rotation of the worm gear 501. A rotatable worm wheel 502 is disposed within the housing 101, meshing with the worm gear 501. A mounting rod 103 is disposed parallel to the extension direction of the slide groove 104 within the housing 101. A lead screw 503 is slidably sleeved on the mounting rod 103. The lead screw 503 passes through and is screwed onto the worm wheel 502. The pointer 504 is disposed at the end of the lead screw 503. The transmission assembly includes a first synchronous pulley 304 disposed on the tube feed rollers 301 and a second synchronous pulley 401 disposed at the end of the worm gear 501. The second synchronous pulley 401 is connected to the first synchronous pulley 304 through a synchronous belt 402.

[0062] When the drug delivery tube 204 is delivered by controlling the rotation of the two sets of delivery wheels 301, the delivery wheels 301 drive the first synchronous wheel 304 to rotate, which in turn drives the second synchronous wheel 401 to rotate under the action of the synchronous belt 402. During the rotation of the second synchronous wheel 401, the worm gear 501 is driven to rotate, and the worm gear 502 is driven to rotate through the meshing between the worm gear 501 and the worm wheel 502. Since the movement of the lead screw 503 is positioned by the mounting rod 103, it can only slide. The lead screw 503 is driven to slide under the screw connection between the worm wheel 502 and the lead screw 503, thereby causing the pointer 504 to slide in the groove 104. By cooperating with the first scale line 105, the delivery length of the drug delivery tube 204 can be accurately determined, thus facilitating the determination of the specific position of the drug delivery head 206 for precise drug delivery to the lesion location in the respiratory tract.

[0063] like Figure 1As shown, in this embodiment, an indicator line 604 is provided on the rocker wheel 603, and a second scale line 106 is arranged circumferentially on the housing 101 along the periphery of the rocker wheel 603. The rotation angle of the rocker wheel 603 can be precisely controlled by the cooperation of the indicator line 604 and the second scale line 106, which facilitates fine-tuning of the movement position of the drug delivery head 206. In conjunction with the indication of the first scale line 105 and the pointer 504, the accuracy of drug delivery is further improved.

[0064] like Figure 2 , 3 As shown, in this embodiment, two sets of slidably mounted movable frames 201 are provided inside the housing 101. Multiple sets of mounting seats 202 are provided on the movable frames 201, and multiple sets of tensioning rollers 203 are provided on the mounting seats 202. The drug supply tube 204 is sequentially wound around the multiple sets of tensioning rollers 203. Multiple sets of guide rails 102 are provided inside the housing 101, and the multiple sets of mounting seats 202 are slidably disposed within the multiple sets of guide rails 102. By controlling the movable frames 201 to slide within the housing 101, the multiple sets of mounting seats 202 can be driven to slide within the guide rails 102. The guide rails 102 can position the movement of the movable frames 201. During movement, the mounting base 202 can drive the tension wheel 203 to move. When the drug supply tube 204 is being delivered, the two sets of movable frames 201 can be controlled to close. When the drug supply tube 204 is being retracted, the two sets of movable frames 201 can be controlled to open to adapt to the length changes of the drug supply tube 204 inside the housing 101. This facilitates the organization of the drug supply tube 204 and prevents it from becoming scattered and knotted inside the housing 101, which could lead to deformation of the drug supply tube 204 and affect drug delivery.

[0065] like Figures 2 to 5 As shown, in this embodiment, a linkage mechanism is provided inside the housing 101. The linkage mechanism is connected to the tube feeding wheel 301 and the movable frame 201. During the rotation of the two sets of tube feeding wheels 301, the linkage mechanism drives the two sets of movable frames 201 to slide in opposite directions. The linkage mechanism includes two sets of rotatable linkage gears 403. One set of linkage gears 403 is set on the second synchronous wheel 401, and the other set of linkage gears 403 is connected to one set of tube feeding wheels 301 through a transmission component. Two sets of drive plates 404 are slidably arranged inside the housing 101. The two sets of drive plates 404 are arranged opposite to each other. The drive plates 404 are provided with inclined grooves 406. Both sets of movable frames 201 are provided with drive columns 407. The two sets of drive columns 407 are respectively locked in the two sets of inclined grooves 406. The drive plates 404 are provided with racks 405 along their sliding direction. The two sets of racks 405 mesh with the two sets of linkage gears 403 respectively.

[0066] During rotation, the two sets of tube delivery wheels 301 drive the two sets of linkage gears 403 to rotate through the transmission assembly. During rotation, the linkage gears 403 can drive the two sets of drive plates 404 to slide within the housing 101 through meshing with the rack 405. During sliding, the drive plates 404 can drive the two sets of movable frames 201 to slide and open in opposite directions through the cooperation of the drive column 407 and the inclined groove 406. This drives the movement of multiple sets of tensioning wheels 203 to adapt to the length change of the drug delivery tube 204 within the housing 101, thus stably tensioning the drug delivery tube 204. Instead of using the traditional elastic tensioning method, the tension force on the drug delivery tube 204 will not be too large, causing deformation and narrowing of the drug delivery passage.

[0067] Specific usage and beneficial effects of the present invention:

[0068] In use, the device delivers the drug delivery tube 204 via a delivery mechanism, allowing the drug delivery head 206 to extend into the patient's airway. The drug delivery device 205 then delivers medication to the drug delivery head 206, administering the medication to the patient's airway. During the delivery of the drug delivery tube 204, the delivery mechanism drives a pointer 504 to slide within a groove 104 via a drive mechanism. This allows for precise measurement of the distance the drug delivery tube 204 extends into the patient's airway through the interaction of the pointer 504 and the first graduation line 105. This eliminates the need for medical personnel to adjust the length of the drug delivery tube 204 into the airway based on experience, facilitating precise control of the insertion length. This ensures the medication is delivered to the designated location for administration, effectively improving drug delivery efficiency and medical efficacy.

[0069] During operation, the device rotates by turning the rocker wheel 603, which drives the second drive gear 602. The second drive gear 602, in turn, meshes with the first drive gear 601, causing the tube delivery wheel 301 to rotate. The meshing of the two sets of transmission gears 303 causes the two sets of tube delivery wheels 301 to rotate in opposite directions, thus stably delivering the medicine to the tube 204. Furthermore, the tube delivery wheel 301, during its rotation, drives two sets of linkage gears 403 via a transmission assembly. These linkage gears 403, in turn, mesh with the rack 405, driving... The drive plate 404 slides, and during the sliding process, the drive plate 404 drives the two sets of movable frames 201 to move in opposite directions to open and close through the cooperation of the inclined groove 406 and the drive column 407. This causes multiple sets of tensioning wheels 203 to move and tension the drug supply tube 204. The tension force is constant to prevent the drug supply tube 204 from deforming and causing the pipeline to become narrow. This ensures that the drug supply tube 204 can always be arranged neatly in the housing 101, effectively preventing the drug supply tube 204 from being scattered and tangled in the housing 101 and causing the pipeline to become blocked. This enables stable delivery of drugs.

[0070] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A precisely adjustable respiratory drug delivery device, characterized in that, Including: The housing (101) is provided with a drug supply device (205), and a sliding groove (104) is also provided on the housing (101), and a first scale line (105) is provided on the sliding groove (104). A drug supply tube (204) is disposed inside the housing (101), with one end connected to the drug supply device (205) and the other end provided with a drug delivery head (206) extending out of the housing (101); A delivery mechanism, disposed within the housing (101) and connected to the drug delivery tube (204), is provided to deliver the drug to the drug delivery tube (204); and The pointer (504) is slidably mounted in the groove (104) and connected to the tube delivery mechanism through a drive mechanism. When the tube delivery mechanism delivers the medicine supply tube (204), it drives the pointer (504) to slide in the groove (104) through the drive mechanism. The tube delivery mechanism includes: Two sets of tube feed rollers (301) are provided, and both sets are rotatably disposed in the housing (101). A gap is formed between the two sets of tube feed rollers (301) through which the drug supply tube (204) passes. The drive mechanism is connected to one set of tube feed rollers (301). When one set of tube feed rollers (301) rotates, the pointer (504) is driven to slide through the drive mechanism. The drive mechanism includes a worm (501) rotatably disposed in the housing (101) and a transmission assembly connected to the tube feed wheel (301) and the worm (501). The transmission assembly converts the rotation of the tube feed wheel (301) into driving the worm (501) to rotate. The drive mechanism also includes: A worm gear (502) is rotatably disposed within the housing (101) and meshes with the worm (501); and A lead screw (503) is provided in the housing (101) with a mounting rod (103) arranged parallel to the extension direction of the slide groove (104). The lead screw (503) is slidably sleeved on the mounting rod (103) and screwed to the worm gear (502). The pointer (504) is located at the end of the lead screw (503). Two sets of anti-slip sleeves (302) are provided, and are respectively fitted onto the two sets of delivery rollers (301) and abut against the drug supply tube (204); and An operating component is disposed on the housing (101) and connected to the two sets of the tube feed wheels (301) to drive the two sets of the tube feed wheels (301) to rotate in opposite directions; The transmission assembly includes: The first synchronizing pulley (304) is mounted on the tube feeding pulley (301); and The second synchronous pulley (401) is disposed at the end of the worm (501) and is connected to the first synchronous pulley (304) via a synchronous belt (402); The operating components include: The transmission gears (303) are provided in two sets and are respectively fixedly installed on the two sets of tube feeding wheels (301), and the two sets of transmission gears (303) mesh with each other; The first drive gear (601) is fixedly mounted on one of the sets of tube feeding wheels (301); The second drive gear (602) is rotatably disposed within the housing (101) and meshes with the first drive gear (601); and A rocker wheel (603) is disposed outside the housing (101) and coaxially connected to the second drive gear (602); The housing (101) is provided with two sets of slidingly mounted movable frames (201), the movable frames (201) are provided with multiple sets of mounting seats (202), the mounting seats (202) are provided with multiple sets of tensioning wheels (203), the drug supply tube (204) is sequentially wound around the multiple sets of tensioning wheels (203), the housing (101) is provided with multiple sets of guide rails (102), and the multiple sets of mounting seats (202) are respectively slidably disposed in the multiple sets of guide rails (102); The housing (101) is provided with a linkage mechanism, which is connected to the tube feeding wheel (301) and the movable frame (201). During the rotation of the two sets of tube feeding wheels (301), the linkage mechanism drives the two sets of movable frames (201) to slide in opposite directions. The linkage mechanism includes: The linkage gear (403) is provided in two sets. One set of the linkage gear (403) is provided on the second synchronous pulley (401), and the other set of the linkage gear (403) is connected to one set of the tube feeding pulley (301) through the transmission assembly. Two sets of drive plates (404) are arranged opposite each other and can be slidably disposed within the housing (101). Each drive plate (404) has a sloping groove (406). Each set of movable frames (201) is provided with a drive column (407), and the two sets of drive columns (407) are respectively engaged within the two sets of sloping grooves (406). Two sets of racks (405) are provided, which are arranged on the drive plate (404) along the sliding direction of the drive plate (404) and respectively mesh with the two sets of linkage gears (403).

2. The precisely adjustable respiratory drug delivery device according to claim 1, characterized in that: The rocker wheel (603) is provided with an indicator line (604), and the housing (101) is provided with a second scale line (106) arranged circumferentially around the rocker wheel (603).

3. The precisely adjustable respiratory drug delivery device according to claim 1, characterized in that: The housing (101) is provided with two sets of opposing dental supports (107), and the drug supply tube (204) is disposed between the two sets of dental supports (107).

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