Multi-component mixed gynecological vagina administration device and use method thereof

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a multi-component mixed gynecological vagina administration device and a use method thereof. The invention provides a multi-component mixed gynecological vagina dosing device. The multi-component mixed gynecological vagina dosing device comprises a dosing cylinder, a mixing cylinder and a propelling cylinder, wherein the dosing cylinder, the mixing cylinder and the propelling cylinder are sequentially connected and assembled to form a multi-component dosing device; a medicine mixing device is arranged in the medicine feeding cylinder cavity, a propelling device is arranged in the propelling cylinder cavity, a propelling piston is fixedly connected to the end, close to the medicine mixing device, of the propelling device, a threaded hole is formed in the middle of the propelling piston, and a threaded rod is arranged on the medicine mixing device and is in threaded connection with the threaded hole in the propelling device. The medicine mixing device can be driven to rotate by pressing the propelling device, so that medicines in the medicine mixing cylinder are mixed; the tedious mode that an existing vagina administration device needs to carry out multi-time administration for multi-component administration or a user needs to carry out administration after in-vitro uniform mixing is made up, and the administration frequency and the medicine mixing uniformity are reduced to a great extent.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a multi-component mixed gynecological vaginal drug delivery device and a use method thereof. Background Art

[0002] Vaginitis is a common gynecological disease in women, such as Trichomonas vaginitis, candidal vaginitis, etc., with a high incidence rate; although traditional oral drug treatment can play a certain role, for local vaginal inflammation, the drug concentration in the vaginal lesions is relatively low, and the treatment effect is sometimes not ideal. Directly delivering the drug to the vaginal lesions can increase the local drug concentration and enhance the treatment effect; the vagina has a special physiological structure, and ordinary drug administration methods such as applying the drug directly to the vulva or allowing the patient to put the drug into the vagina by themselves, etc., are difficult to evenly distribute the drug on the entire vaginal mucosa surface, resulting in the drug not being able to fully contact the lesions, resulting in unsatisfactory treatment effects, drug waste, etc.; the vaginal drug delivery device can accurately deliver the drug deep into the vagina, so that the drug is in full contact with the vaginal mucosa, thereby improving the utilization rate of the drug.

[0003] With the development of society and the continuous improvement of medical standards, vaginal drugs have gradually developed from single-component drugs to multi-component drug mixtures. However, most of the existing vaginal drug delivery devices can only meet the needs of single-component drugs or drugs mixed externally, and are not very suitable for multi-component drugs that need to be mixed before administration. Due to structural limitations, vaginal drug delivery devices that can be used to mix multiple drugs have shorter mixing tubes, which will result in uneven mixing of multiple drugs. Therefore, how to fully and evenly mix multiple drugs in a vaginal drug delivery device is a technical problem. Summary of the invention

[0004] The purpose of the present invention is to solve the problems in the background technology and to provide a multi-component mixed gynecological vaginal drug delivery device and its use method, which makes up for the cumbersome method of existing vaginal drug delivery devices that require multiple administrations of multi-components or require users to mix them in vitro before administering the drug, thereby greatly reducing the number of administrations and the uniformity of drug mixing.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: A multi-component mixing gynecological vaginal drug delivery device comprises a drug delivery cylinder, a drug mixing cylinder and a propulsion cylinder, wherein the drug delivery cylinder, the drug mixing cylinder and the propulsion cylinder are sequentially connected and assembled to form a multi-component drug delivery device; a drug mixing device is arranged in the cavity of the drug delivery cylinder, a propulsion device is arranged in the cavity of the propulsion cylinder, the propulsion device is fixedly connected to a propulsion piston at one end close to the drug mixing device, a threaded hole is provided in the middle of the propulsion piston, a threaded rod is arranged on the drug mixing device and is threadedly connected to the threaded hole on the propulsion device, and the drug mixing device can be driven to rotate by pressing the propulsion device, thereby achieving mixing of the drugs in the drug mixing cylinder (200).

[0006] Preferably, the hollow structure inside the dosing barrel is a dosing cavity, and a plurality of dosing holes are opened through the bottom end and side walls of the dosing cavity, and a dosing barrel mounting portion for connecting the mixing barrel is also provided on the inner side wall at the end opposite to the dosing holes; the medicine mixed from the mixing barrel will enter the dosing cavity, and through the squeezing of the medicine in the dosing cavity by the medicine mixing device and the propulsion device, the medicine will pass through the dosing holes on the bottom end and the side walls and enter the vagina, and a plurality of dosing holes are opened on the side walls and the bottom end, so that the medicine can be more dispersed after entering the vagina, so that the drug treatment effect is better, and the dosing barrel mounting portion on the dosing barrel can allow the mixing barrel to be installed and fixed on the dosing barrel.

[0007] Preferably, the dosing barrel is provided with a limiting column for limiting the movement of the medicine mixing device on the side wall near one end of the dosing barrel mounting portion; the limiting column can extend into the limiting groove to limit the up and down movement of the medicine mixing device, but does not affect the rotational movement of the medicine mixing device. Therefore, by pressing the pressure handle of the propulsion device, the medicine mixing device can be rotated in the dosing barrel to achieve uniform mixing of the medicine.

[0008] Preferably, the hollow structure inside the mixing cartridge is a mixing chamber, and both ends of the mixing chamber are provided with mixing cartridge mounting parts for connection and installation, and the cavity of the mixing chamber is also filled with the medicine to be mixed; the mixing cartridge is designed to be a separately detachable and replaceable component. When the vaginal applicator is needed, only the mixing cartridge needs to be used as a replacement component, and components such as the handle and its driving mechanism can be reused, which reduces the cost during long-term use and improves environmental protection. It is suitable for treatments that require frequent dressing changes.

[0009] Preferably, the hollow structure inside the propulsion cylinder is a propulsion chamber, and a propulsion cylinder mounting portion is provided at one end of the propulsion chamber close to the mixing cylinder, and the propulsion device is arranged in the propulsion chamber; the propulsion chamber allows the propulsion device to move in the propulsion cylinder, and the propulsion cylinder mounting portion on the propulsion cylinder allows the propulsion cylinder to be installed and fixed on the mixing cylinder.

[0010] Preferably, a mixing piston is fixedly connected to one end of the threaded rod on the mixing device, and a plurality of mixing holes for mixing drugs are provided in a circumferential array on the surface of the mixing piston; the threaded rod of the mixing device is threadedly connected to the threaded hole on the propulsion device, and when the mixing device is relatively fixed by the limiting column and the propulsion device moves downward, the mixing device will be driven and rotated by the threaded rod, and at this time, the drugs in the mixing chamber will pass through the plurality of mixing holes on the mixing piston and continuously rotate into the drug administration chamber, thereby achieving uniform mixing of drugs of different components.

[0011] Preferably, a circle of limit grooves for limiting the movement of the medicine mixing device is provided on the circumference of the side surface of the medicine mixing piston, and the limit grooves correspond to the limit posts on the dosing barrel, and the limit posts can extend into the limit grooves to limit the movement of the medicine mixing device; the limit grooves provided on the side surfaces of the medicine mixing piston can coincide with the limit posts provided on the side walls of the dosing barrel, and when the pressure handle of the propulsion device is pressed, the propulsion device will drive the medicine mixing device to rotate downward so as to evenly mix the medicines in the medicine mixing chamber.

[0012] Preferably, the limiting column can limit the up and down movement of the medicine mixing piston, but cannot limit the circular movement of the medicine mixing piston. By pressing the propulsion device, the medicine mixing piston can rotate driven by the threaded rod to mix the medicine to be mixed.

[0013] Preferably, a pressure handle for pressing is provided on the end of the propulsion device opposite to the propulsion piston, and the pressure handle is connected to the propulsion piston via a propulsion cylinder; by pressing the pressure handle on the propulsion device, the pressure handle will drive the propulsion cylinder and the propulsion piston to move downward together, and when the propulsion device moves downward in the propulsion chamber, it will squeeze the medicine stored in the mixing chamber between the propulsion device and the mixing chamber to mix them.

[0014] Preferably, a method for using a multi-component mixed gynecological vaginal drug delivery device is as follows: S1. Assembling the medicine cartridge: installing the medicine mixing device into the medicine administering cavity of the medicine administering cartridge, aligning the limiting groove of the medicine mixing piston on the medicine mixing device with the position of the upper limiting post of the medicine administering cartridge, and then pressing the limiting post into the limiting groove to fix the medicine mixing device; S2. Assembling the vaginal drug delivery device: installing the drug mixing cylinder and the propulsion cylinder on the assembled drug delivery cylinder in sequence, then installing the propulsion device in the propulsion cavity of the propulsion cylinder, and screwing the threaded hole of the propulsion device into the threaded rod of the drug mixing device; S3, drug mixing: Press the pressure handle of the pushing device, the pushing piston will move downward under the action of pressure, and squeeze the drugs to be mixed in the drug mixing chamber, and at the same time, the threaded rod and the limit groove rotate inside the drug delivery tube under the action of the relatively fixed threaded hole and the limit column. At this time, the drugs to be mixed in the drug mixing chamber enter the drug delivery chamber through the drug mixing hole under the action of continuous squeezing and rotation, thereby achieving the purpose of mixing different components of drugs; S4. Drug administration: When the propulsion device is pressed to the bottom and contacts the drug mixing device, the limit column is pulled out. At this time, the propulsion device and the drug mixing device will move downward together under the pressure of pressing, squeezing the mixed drug in the drug administration cavity. The drug will eventually enter the vagina through the drug administration hole on the drug administration tube under the action of pressure.

[0015] In summary, the beneficial effects of the present invention are: 1. The multi-component mixed gynecological vaginal drug delivery device and its use method described in the present invention, wherein the composite drug delivery piston device composed of the multi-stage drug delivery device can make the drug fully mixed and uniform in the vaginal drug delivery device before drug delivery, thereby avoiding the problem that the components of multiple drug components cannot be well mixed and uniform before drug delivery; 2. The multi-component mixed gynecological vaginal drug delivery device and its use method described in the present invention, the structural design of the drug mixing device and the propulsion device, make up for the existing cumbersome method of multiple component drug delivery that requires multiple administrations, or requires users to mix the drugs in vitro before administering the drugs, greatly reducing the number of drug administrations while also avoiding the pollution caused by in vitro drug mixing, spilling of drugs, and other situations that affect drug efficacy, thereby improving drug administration efficiency and drug mixing effect; 3. The multi-component mixing gynecological vaginal drug delivery device and its use method described in the present invention, the mixing cartridge is configured to be a structure that can be individually disassembled and replaced. When the vaginal drug delivery device is needed, only the mixing cartridge needs to be used as a replacement part, and the handle and its driving mechanism and other parts can be reused, which reduces the cost during long-term use while improving environmental protection. It is suitable for treatments that require frequent dressing changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the multi-component drug delivery device of the present invention; Figure 2 It is a schematic diagram of the internal structure of the present invention; Figure 3 It is a schematic diagram of the structure of the drug mixing device of the present invention; Figure 4 It is a schematic diagram of the structure of the propulsion device of the present invention; Figure 5 Schematic diagram of the integrated drug delivery device of the present invention.

[0017] Markings in the figure: 100-drug delivery cartridge, 101-drug delivery chamber, 102-drug delivery hole, 103-drug delivery cartridge mounting portion, 104-limiting column, 200-drug mixing cartridge, 201-drug mixing chamber, 202-drug mixing cartridge mounting portion, 203-drug to be mixed, 300-propelling cylinder, 301-propelling chamber, 302-propelling cylinder mounting portion, 400-drug mixing device, 401-threaded rod, 402-drug mixing piston, 403-drug mixing hole, 404-limiting groove, 500-propelling device, 501-propelling piston, 502-threaded hole, 503-pressing handle, 504-propelling cylinder, 600-multi-component drug delivery device. DETAILED DESCRIPTION

[0018] The following specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

[0019] The present invention will be described in detail below with reference to the accompanying drawings by way of embodiments.

[0020] Example 1

[0021] according to Figure 1 As shown, a multi-component mixing gynecological vaginal drug delivery device includes a drug delivery cylinder 100, a drug mixing cylinder 200 and a propulsion cylinder 300. The drug delivery cylinder 100, the drug mixing cylinder 200 and the propulsion cylinder 300 are sequentially connected and assembled to form a multi-component drug delivery device 600; a drug mixing device 400 is arranged in the cavity of the drug delivery cylinder 100, and a propulsion device 500 is arranged in the cavity of the propulsion cylinder 300. The propulsion device 500 is fixedly connected with a propulsion piston 501 at one end close to the drug mixing device 400, and a threaded hole 502 is provided in the middle position of the propulsion piston 501. A threaded rod 401 is arranged on the drug mixing device 400 and is threadedly connected with the threaded hole 502 on the propulsion device 500. By pressing the propulsion device 500, the drug mixing device 400 can be driven to rotate, thereby achieving mixing of the drugs in the drug mixing cylinder 200.

[0022] according to Figure 2As shown, the hollow structure inside the dosing barrel 100 is a dosing cavity 101, and a plurality of dosing holes 102 are provided on the bottom end and the side wall of the dosing cavity 101, and a dosing barrel mounting portion 103 for connecting the mixing barrel 200 is also provided on the inner side wall at the end opposite to the dosing holes 102; the medicine mixed from the mixing barrel 200 will enter the dosing cavity 101, and the medicine in the dosing cavity 101 will be squeezed by the medicine mixing device 400 and the propulsion device 500, so that the medicine will pass through the dosing holes 102 on the bottom end and the side wall and enter the vagina, and a plurality of dosing holes 102 are provided on the side wall and the bottom end, so that the medicine can be more dispersed after entering the vagina, so that the drug treatment effect is better, and the dosing barrel mounting portion 103 on the dosing barrel 100 can allow the mixing barrel 200 to be fixed on the dosing barrel 100.

[0023] according to Figure 2 As shown, a limiting column 104 for limiting the movement of the medicine mixing device 400 is provided on the side wall of the dosing barrel 100 near one end of the dosing barrel mounting portion 103; the limiting column 104 can extend into the limiting groove 404 to limit the up and down movement of the medicine mixing device 400, but does not affect the rotational movement of the medicine mixing device 400, so the medicine mixing device 400 can be rotated in the dosing barrel 100 by pressing the pressure handle 503 of the propulsion device 500 to achieve mixing of the medicine.

[0024] according to Figure 2 As shown, the hollow structure inside the mixing cartridge 200 is a mixing chamber 201. Both ends of the mixing chamber 201 are provided with mixing cartridge mounting parts 202 for connection and installation. The cavity of the mixing chamber 201 is also filled with medicine 203 to be mixed. The mixing cartridge 200 is designed to be a separately detachable and replaceable component. When a vaginal applicator is needed, only the mixing cartridge 200 needs to be used as a replacement component. The handle and its driving mechanism and other components can be reused, which reduces the cost during long-term use while improving environmental protection. It is suitable for treatments that require frequent dressing changes.

[0025] according to Figure 1 , Figure 2 As shown, the hollow structure inside the propulsion cylinder 300 is a propulsion chamber 301. The propulsion chamber 301 is provided with a propulsion cylinder mounting portion 302 at one end close to the mixing cylinder 200, and the propulsion device 500 is arranged in the propulsion chamber 301; the propulsion chamber 301 allows the propulsion device 500 to move inside the propulsion cylinder 300, and the propulsion cylinder mounting portion 302 on the propulsion cylinder 300 allows the propulsion cylinder 300 to be installed and fixed on the mixing cylinder 200.

[0026] according to Figure 3As shown, a mixing piston 402 is fixedly connected to one end of a threaded rod 401 on the drug mixing device 400, and a plurality of mixing holes 403 for mixing drugs are provided in a circumferential array on the surface of the mixing piston 402; the threaded rod 401 of the drug mixing device 400 is threadedly connected to the threaded hole 502 on the propulsion device 500, and when the drug mixing device 400 is relatively fixed by the limiting column 104 and the propulsion device 500 moves downward, the drug mixing device 400 will be driven and rotated by the threaded rod 502, and at this time, the drugs in the drug mixing chamber 201 will pass through the plurality of mixing holes 403 on the drug mixing piston 402 and continuously rotate into the drug delivery chamber 101, thereby achieving uniform mixing of drugs of different components.

[0027] according to Figure 2 , Figure 3 As shown, a circle of limiting grooves 404 for limiting the movement of the medicine mixing device 400 is provided on the circumferential direction of the side surface of the medicine mixing piston 402, and the limiting grooves 404 correspond to the limiting posts 104 on the dosing barrel 100, and the limiting posts 104 can extend into the limiting grooves 404 to limit the movement of the medicine mixing device 400; the limiting grooves 404 provided on the side surface of the medicine mixing piston 402 can just correspond to the limiting posts 104 provided on the side wall of the dosing barrel 100, and when the pressure handle 503 of the propulsion device 500 is pressed, the propulsion device 500 will drive the medicine mixing device 400 to rotate downward so as to evenly mix the medicines in the medicine mixing chamber 201.

[0028] according to Figure 3 , Figure 4 As shown, the limiting column 104 can limit the up and down movement of the medicine mixing piston 402, but cannot limit the circular movement of the medicine mixing piston 402. By pressing the propulsion device 500, the medicine mixing piston 402 can rotate driven by the threaded rod 401 to mix the medicine 203 to be mixed.

[0029] according to Figure 2 , Figure 4 As shown, a pressing handle 503 for pressing is provided on the end of the propulsion device 500 opposite to the propulsion piston 501, and the pressing handle 503 and the propulsion piston 501 are connected via a propulsion cylinder 504; by pressing the pressing handle 503 on the propulsion device 500, the pressing handle 503 will drive the propulsion cylinder 504 and the propulsion piston 501 to move downward together, and when the propulsion device 500 moves downward in the propulsion chamber 301, it will squeeze the medicine stored in the mixing chamber 201 between the propulsion device 500 and the mixing device 400 to mix them.

[0030] A method for using a multi-component mixed gynecological vaginal drug delivery device, the method for using: S1. Assembling the medicine cartridge: installing the medicine mixing device 400 into the medicine administering cavity 101 of the medicine cartridge 100, aligning the limiting groove 404 of the medicine mixing piston 402 on the medicine mixing device 400 with the position of the upper limiting post 104 of the medicine cartridge 100, and then pressing the limiting post 104 into the limiting groove 404 to fix the medicine mixing device 400; S2. Assembling the vaginal drug delivery device: sequentially installing the drug mixing cylinder 200 and the propulsion cylinder 300 on the assembled drug delivery cylinder 100, then installing the propulsion device 500 in the propulsion cavity 301 of the propulsion cylinder 300, and screwing the threaded hole 502 of the propulsion device 500 into the threaded rod 401 of the drug mixing device 400; S3, drug mixing: Press the pressing handle 503 of the pushing device 500, the pushing piston 501 will move downward under the action of pressure, and squeeze the drug 203 to be mixed in the drug mixing chamber 201, and at the same time, the threaded rod 401 and the limiting groove 404 rotate inside the drug delivery tube 100 under the action of the relatively fixed threaded hole 502 and the limiting column 104, at this time, the drug 203 to be mixed in the drug mixing chamber 201 enters the drug delivery chamber 101 through the drug mixing hole 403 under the action of continuous squeezing and rotation, thereby achieving the purpose of mixing different component drugs; S4. Drug administration: When the propulsion device 500 is pressed to the bottom and contacts the drug mixing device 400, the limiting column 104 is pulled out. At this time, the propulsion device 500 and the drug mixing device 400 will move downward together under the pressure of pressing, squeezing the mixed drug in the drug administration cavity 101. The drug will eventually enter the vagina through the drug administration hole 102 on the drug administration tube 100 under the action of pressure.

[0031] Example 2

[0032] The difference from the above-mentioned embodiment 1 is that according to Figure 5As shown, a multi-component drug delivery device 600 of a multi-component mixing gynecological vaginal drug delivery device is an integrated structural design, wherein the propulsion device 500 and the drug mixing device 400 are both arranged inside the drug delivery barrel 100, and a threaded hole 502 is provided in the middle position of the propulsion piston 501 of the propulsion device 500, and the threaded rod 401 of the drug mixing device 400 is threadedly connected with the threaded hole 502, and the drug mixing device 400 can be driven to rotate by pressing the propulsion device 500 to achieve mixing of the drugs in the multi-component drug delivery device 600; before using the multi-component drug delivery device 600, the drugs of different components to be used are filled into the cavity between the drug mixing device 400 and the propulsion device 500, and when in use, the pressure handle 503 on the propulsion device 500 is pressed, and the propulsion device 500 will drive the propulsion piston 501 under the pressure of the pressing. 01 moves downward together and squeezes the medicine in the cavity. At the same time, the threaded rod 401 and the limiting groove 404 rotate inside the cavity of the multi-component drug delivery device 600 under the action of the relatively fixed threaded hole 502 and the limiting column 104. At this time, the medicine in the cavity enters the drug delivery cavity 101 through the drug mixing hole 403 under the action of continuous squeezing and rotation, thereby achieving the purpose of mixing different component drugs. When the propulsion device 500 is pressed to the bottom and contacts with the drug mixing device 400, the limiting column 104 is pulled out. At this time, the propulsion device 500 and the drug mixing device 400 will move downward together under the action of the pressing pressure, squeeze the evenly mixed medicine in the drug delivery cavity 101, and the medicine will eventually enter the vagina through the drug delivery hole 102 on the multi-component drug delivery device 600 under the action of pressure, realizing the process of evenly mixed drugs entering the vagina.

Claims

1. A multi-component mixed gynecological vaginal drug delivery device, characterized in that: The invention comprises a drug-giving cylinder (100), a drug-mixing cylinder (200) and a propulsion cylinder (300), wherein the drug-giving cylinder (100), the drug-mixing cylinder (200) and the propulsion cylinder (300) are sequentially connected and assembled to form a multi-component drug-giving device (600); a drug-mixing device (400) is arranged in the cavity of the drug-giving cylinder (100), and a propulsion device (500) is arranged in the cavity of the propulsion cylinder (300); a propulsion piston (501) is fixedly connected to the propulsion device (500) at one end close to the drug-mixing device (400), a threaded hole (502) is provided in the middle of the propulsion piston (501), a threaded rod (401) is arranged on the drug-mixing device (400) and is threadedly connected to the threaded hole (502) on the propulsion device (500), and the drug-mixing device (400) can be driven to rotate by pressing the propulsion device (500), thereby mixing the drugs in the drug-mixing cylinder (200).

2. A multi-component mixed gynecological vaginal drug delivery device according to claim 1, characterized in that: The hollow structure inside the drug delivery cartridge (100) is a drug delivery cavity (101), and a plurality of drug delivery holes (102) are provided through the bottom end and the side wall of the drug delivery cavity (101). A drug delivery cartridge mounting portion (103) for connecting to the drug mixing cartridge (200) is also provided on the inner side wall at the end opposite to the drug delivery holes (102).

3. A multi-component mixed gynecological vaginal drug delivery device according to claim 2, characterized in that: A limiting column (104) for limiting the movement of the drug mixing device (400) is provided on a side wall of the drug delivery barrel (100) close to one end of the drug delivery barrel mounting portion (103).

4. A multi-component mixed gynecological vaginal drug delivery device according to claim 1, characterized in that: The hollow structure inside the drug mixing cartridge (200) is a drug mixing chamber (201), and drug mixing cartridge mounting portions (202) for connection and mounting are provided at both ends of the drug mixing chamber (201), and the drug mixing chamber (201) is also filled with drugs (203) to be mixed.

5. A multi-component mixed gynecological vaginal drug delivery device according to claim 1, characterized in that: The hollow structure inside the propulsion cylinder (300) is a propulsion chamber (301), and the propulsion chamber (301) is provided with a propulsion cylinder mounting portion (302) at one end close to the drug mixing cylinder (200), and the propulsion device (500) is arranged in the propulsion chamber (301).

6. A multi-component mixed gynecological vaginal drug delivery device according to claim 3, characterized in that: A drug mixing piston (402) is fixedly connected to one end of the threaded rod (401) on the drug mixing device (400), and a plurality of drug mixing holes (403) for mixing drugs are provided in a circumferential array on the surface of the drug mixing piston (402).

7. A multi-component mixed gynecological vaginal drug delivery device according to claim 6, characterized in that: A circle of limiting grooves (404) for limiting the movement of the drug mixing device (400) is provided on the circumferential direction of the side surface of the drug mixing piston (402); the limiting grooves (404) correspond to the limiting posts (104) on the drug delivery cylinder (100); and the limiting posts (104) can extend into the limiting grooves (404) to limit the movement of the drug mixing device (400).

8. A multi-component mixed gynecological vaginal drug delivery device according to claim 7, characterized in that: The limiting column (104) can limit the up and down movement of the medicine mixing piston (402), but cannot limit the circular movement of the medicine mixing piston (402). By pressing the propulsion device (500), the medicine mixing piston (402) can rotate under the drive of the threaded rod (401) to mix the medicine (203) to be mixed.

9. A multi-component mixed gynecological vaginal drug delivery device according to claim 1, characterized in that: A pressing handle (503) for pressing is provided on one end of the propulsion device (500) opposite to the propulsion piston (501), and the pressing handle (503) and the propulsion piston (501) are connected via a propulsion cylinder (504).

10. A method for using a multi-component mixed gynecological vaginal drug delivery device, characterized in that: The usage is: S1. Assembling the medicine cartridge: installing the medicine mixing device (400) into the medicine administering chamber (101) of the medicine administering cartridge (100), aligning the limiting groove (404) of the medicine mixing piston (402) on the medicine mixing device (400) with the position of the upper limiting column (104) of the medicine administering cartridge (100), and then pressing the limiting column (104) into the limiting groove (404) to fix the medicine mixing device (400); S2. Assembling the vaginal drug delivery device: sequentially installing the drug mixing cylinder (200) and the propulsion cylinder (300) on the assembled drug delivery cylinder (100), then installing the propulsion device (500) in the propulsion cavity (301) of the propulsion cylinder (300), and screwing the threaded hole (502) of the propulsion device (500) into the threaded rod (401) of the drug mixing device (400); S3, drug mixing: the pressing handle (503) of the pushing device (500) is pressed, and the pushing piston (501) moves downward under the action of the pressure, and squeezes the drug (203) to be mixed in the drug mixing chamber (201), and at the same time, the threaded rod (401) and the limiting groove (404) rotate inside the drug delivery tube (100) under the action of the relatively fixed threaded hole (502) and the limiting column (104). At this time, the drug (203) to be mixed in the drug mixing chamber (201) passes through the drug mixing hole (403) and enters the drug delivery chamber (101) under the action of continuous squeezing and rotation, thereby achieving the purpose of mixing drugs of different components; S4. Drug administration: When the propulsion device (500) is pressed to the bottom and contacts the drug mixing device (400), the limiting column (104) is pulled out. At this time, the propulsion device (500) and the drug mixing device (400) move downward together under the pressure of the pressing, squeezing the mixed drug in the drug administration cavity (101). The drug eventually enters the vagina through the drug administration hole (102) on the drug administration tube (100) under the action of pressure.

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