A vaginal applicator

Abstract

This invention provides a vaginal medication applicator with several sets of dispensing holes located at the upper end of an injection sleeve, used to deliver ointment into the vaginal wall. A squeezing mechanism is located inside the injection sleeve and includes a first connecting block, a second fixing post, a second fixing block, and several sets of squeezing plates. The first connecting block is sealed to the injection sleeve, and the top of the first connecting block is fixedly connected to the second fixing block via the second fixing post. The squeezing plates are arranged in a ring around the axis of the injection sleeve, positioned above the first connecting block, and slidably connected to the second fixing block. The squeezing plates are radially movable along the injection sleeve and used to squeeze out the ointment from the injection sleeve. This invention solves the problem in existing technologies where, during multi-hole medication administration, the push rod obstructs the dispensing holes, resulting in varying amounts of medication dispensed from holes at different depths, leading to uneven medication distribution.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a vaginal delivery device. Background Technology

[0002] Vaginal administration is an important method of local drug delivery in gynecology, widely used in the treatment of common gynecological diseases such as vaginitis, cervicitis, cervical erosion, and endometritis, as well as in luteal support and hormone replacement therapy in assisted reproductive technologies. Common vaginal administration methods include bolus injection, balloon or sponge injection, and manual insertion of vaginal suppositories or tablets. In bolus injection, the ointment, gel, or suppository is inserted into the tip of the tube, and the medication is pushed deep into the vagina using a plunger. After use, to prevent cross-infection, bolus injections are usually discarded or sterilized for reuse.

[0003] For example, patent application number 2025116017890 discloses a drug delivery device for gynecological diseases, including a needle tube with a connecting tube threaded to it. The connecting tube is connected to a drug delivery tube via an infusion tube. The drug delivery tube has several drug delivery holes evenly distributed. The infusion tube is equipped with an expansion mechanism, which includes a disc mounted on the infusion tube. A base frame is fixedly installed inside the disc. A first gear is rotatably mounted on the base frame. The first gear has an arc-shaped groove, and a protrusion is slidably connected to the arc-shaped groove. The protrusion is fixedly installed on an expansion rod, which is slidably connected to the base frame. In existing devices, when administering medication to the vagina, due to the increased number of drug delivery holes, when the push rod moves to a certain depth, it gradually blocks the drug delivery holes. At this point, the blocked drug delivery holes cannot deliver medication, while the unblocked drug delivery holes can continue to deliver medication. This results in drug delivery holes farther from the push rod delivering more medication than those closer to the push rod, leading to uneven drug delivery. Summary of the Invention

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a vaginal drug delivery device to solve the problem of uneven drug delivery in the prior art when performing multi-orifice drug delivery, where the push rod blocks the drug delivery orifice during the pushing process, resulting in different drug delivery amounts from drug delivery orifices at different depths.

[0005] To achieve the above and other related objectives, the present invention provides a vaginal medication applicator, comprising an injection sleeve; a plurality of dispensing holes, each set of which is formed on the upper end of the injection sleeve and arranged vertically and in a circular array on the outer wall of the injection sleeve, the plurality of dispensing holes being used to deliver ointment into the inner wall of the vagina; and a squeezing mechanism located inside the injection sleeve, the squeezing mechanism comprising a first connecting block, a second fixing post, a second fixing block, and a plurality of squeezing plates, the first connecting block being sealed to the injection sleeve, the top end of the first connecting block being fixedly connected to the second fixing block via the second fixing post, the first connecting block being movable within the injection sleeve along the axial direction of the injection sleeve, the plurality of squeezing plates being arranged in a circular array along the axis of the injection sleeve, the plurality of squeezing plates being located above the first connecting block, the plurality of squeezing plates being slidably connected to the second fixing block, the plurality of squeezing plates being movable radially along the injection sleeve, the squeezing plates being arc-shaped, and the squeezing plates being used to squeeze out the ointment from the injection sleeve.

[0006] As an optional solution, the extrusion mechanism further includes several sets of cooperating components, which are arranged in a circular array within the first connecting block. These cooperating components can move vertically on the first connecting block. The cooperating components and the extrusion plates are interleaved, and the cooperating components drive the extrusion plates to slide on the first connecting block. Each cooperating component includes a first fixing frame, on which two sets of first cooperating blocks are fixedly connected. The first cooperating blocks are aligned with the corresponding extrusion plates. The first connecting block has several sets of first sliding grooves and several sets of second sliding grooves. The second fixing post is slidably engaged in the first sliding groove, and the first cooperating block is slidably engaged in the second sliding groove. The surface of the first cooperating block facing the extrusion plate is inclined.

[0007] As an optional embodiment, the extrusion mechanism further includes a third mating column, on which a plurality of connecting rods are arranged in a ring. The connecting rods are horizontal, and the plurality of connecting rods are slidably engaged in a plurality of first sliding grooves. The first fixing frame is located below the connecting rods. Each of the plurality of connecting rods is fixedly connected to a movable column, which is vertical and has an isosceles trapezoidal horizontal cross-section. The movable column is located between the two sets of first mating blocks of the mating assembly, and the plurality of movable columns are staggered with the plurality of extrusion plates. The connection points of the movable column and the two sets of extrusion plates are aligned. A movable sleeve is fitted on the third mating column, which is located below the third mating column. The movable sleeve is hollow, and the plurality of first fixing frames are fixed on the movable sleeve.

[0008] As an optional embodiment, the sidewall of the second fixing block is composed of several sets of arc-shaped surfaces, and the arc-shaped surfaces of the second fixing block are completely attached to the extrusion plate; the extrusion plate is elastic, and the diameter of the extrusion plate is larger than the diameter of the connecting sleeve; a second limiting block and a third limiting block are fixedly connected to the extrusion plate, the second limiting block is located above the third limiting block, the second limiting block and the third limiting block are both placed horizontally and facing the center of the first connecting block, several sets of second limiting grooves are opened on the second fixing block and the second limiting groove, and the second limiting block and the third limiting block are respectively slidably locked in the corresponding second limiting grooves; several sets of third fixing blocks are fixedly connected to the second fixing post, the third limiting blocks are "L"-shaped, the several sets of third fixing blocks are respectively aligned with the several sets of third limiting blocks, a tension spring is provided between the third fixing block and the third limiting block, and the two ends of the tension spring are respectively fixedly connected to the third fixing block and the third limiting block.

[0009] As an optional solution, each of the first mating blocks is provided with a supporting element. The supporting element is used to support the extrusion plate, so that the extrusion plate can completely fit against the inner wall of the injection sleeve. The supporting element includes a movable block. The first mating block has a first fixing groove and a second fixing groove, which are connected. One end of the movable block is inserted into the second fixing groove, and the other end of the movable block is slidably engaged in the first fixing groove. A limiting post is fixedly connected to the movable block. The limiting post is located at the end of the movable block away from the second fixing groove. The first mating block has the movable groove, and the limiting post is slidably engaged in the movable groove. The movable groove is provided with... A second spring is provided, which is fitted onto the movable block. One end of the second spring contacts the limiting post, and the other end of the second spring contacts the side wall of the movable groove near the second fixed groove. An inclined block is fixedly connected to the end of the movable block away from the second fixed groove. The inclined block is inclined. Several sets of second fixed frames are arranged in a circular array on the second fixed post. The second fixed frames are "Y" shaped. Two sets of second mating blocks are fixedly connected to the second fixed frames. The several sets of second mating blocks are vertically aligned with the several sets of inclined blocks. The second mating blocks are located above the inclined blocks. The bottom surface of the second mating blocks is inclined, and the inclined surface of the inclined blocks is parallel to the inclined surface of the second mating blocks.

[0010] As an optional embodiment, the movable column includes a second connecting column and two sets of third connecting columns. The second connecting column is fixedly connected to the connecting rod and has an isosceles trapezoidal cross-section. The third connecting columns are movably connected to the connecting rod. A fifth fixing groove is provided on the second connecting column, with the opening of the fifth fixing groove facing away from the center of the first connecting block. The two sets of third connecting columns are slidably engaged on the second connecting column, with the two sets of third connecting columns located on both sides of the second connecting column. The third connecting columns slide along the center of the first connecting block on the second connecting column. The two ends of the second connecting column... Each of the three connecting columns is fixedly connected with a fourth limiting block, and each of the two ends of the third connecting column is fixedly connected with a fifth limiting block. The two sets of fourth limiting blocks are located between the two sets of fifth limiting blocks, and the fourth limiting block is in contact with the corresponding fifth limiting block. A locking block is fixedly connected to the second connecting column, and a locking groove is opened on the third connecting column. The locking block is engaged in the locking groove to prevent the third connecting column from separating from the second connecting column. An airbag is provided between the second connecting column and the two sets of third connecting columns, and the airbag completely fills the gap between the second connecting column and the two sets of third connecting columns.

[0011] As an optional embodiment, the third mating post is located at the top of the movable sleeve, and a second mating post is provided at the bottom of the movable sleeve. The top of the second mating post is inserted into the movable sleeve, and two sets of first limiting blocks are fixedly connected to the second mating post. Two sets of first limiting grooves are provided on the inner wall of the movable sleeve, and the two sets of first limiting blocks are slidably engaged in the two sets of first limiting grooves respectively. A first spring is provided between the movable sleeve and the second mating post. A first fixing post is fixedly connected to both the second mating post and the third mating post. The two sets of first fixing posts are located between the second mating post and the third mating post. The two ends of the first spring are respectively fitted onto the two sets of first fixing posts, and the two ends of the first spring are in contact with the second mating post and the third mating post respectively. The first spring is parallel to the movable sleeve.

[0012] As an optional solution, the first connecting block is provided with a third fixing groove, the opening of which is located at the bottom end of the first connecting block. The third mating post and the movable sleeve are both slidably fitted into the third fixing groove. The third fixing groove is provided with a plurality of protrusions, which are located at the lower end of the third fixing groove and above the third mating post. The protrusions are used to hold the third mating post and the movable sleeve in place. The first mating post is provided with a plurality of fourth fixing grooves, which are respectively aligned with the corresponding protrusions.

[0013] As an optional embodiment, the injection sleeve includes a fixed sleeve and a connecting sleeve. The fixed sleeve is connected to the connecting sleeve by threads, and the connecting sleeve is located above the fixed sleeve. Several sets of drug dispensing holes are formed on the connecting sleeve. A first fixing block is fixedly connected to the fixed sleeve. A push rod is provided inside the injection sleeve. The push rod is slidably engaged in the injection sleeve. A first mating post is fixedly connected to the top of the push rod. A second mating post is fixedly connected to the top of the first mating post. The diameter of the first mating post is larger than the diameter of the second mating post. The diameter of the first mating post is equal to the diameter of the movable sleeve.

[0014] As an optional solution, an isolation sleeve is provided between the push rod and the injection sleeve. The isolation sleeve is soft and elastic, and will not affect the normal use of the drug dispensing mechanism in the injection sleeve. A connecting ring is provided at the bottom end of the isolation sleeve, and the connecting ring is snapped into the inner wall of the connecting sleeve.

[0015] As described above, the vaginal delivery device of the present invention has at least the following beneficial effects: When administering medication to a patient, the ointment is first squeezed out of the dispensing hole by the vertical movement of the squeezing mechanism. When there is not much ointment left in the connecting sleeve, the squeezing plate is moved horizontally by the cooperating component. This ensures that the squeezing mechanism will never block the dispensing hole during the squeezing process, thus ensuring that there is always ointment that can be squeezed out of the dispensing hole. This ensures that the amount of medication dispensed from each group of dispensing holes is consistent, thereby achieving the purpose of uniform drug administration.

[0016] When administering medication to different patients, the isolation sleeve separates the ointment from the dispensing mechanism. The dispensing mechanism does not come into direct contact with the ointment during the medication administration process, so the dispensing mechanism can be used continuously without the need for disinfection. There is no need to worry about cross-infection. Medical staff only need to replace the connecting sleeve and the isolation sleeve to administer medication to the next patient. This can effectively reduce the number of dispensing mechanisms that need to be purchased, thereby saving economic costs and reducing the generation of medical waste. Attached Figure Description

[0017] Figure 1 The diagram shown is a structural schematic of the present invention. Figure 2 The diagram shown is a schematic representation of the internal structure of the present invention. Figure 3 The diagram shown is an exploded view of the present invention. Figure 4 Shown as the present invention Figure 3 A magnified view of point A in the image; Figure 5 The diagram shown is a structural schematic of the extrusion mechanism of the present invention. Figure 6Shown as the present invention Figure 5 A magnified view of a section at point B in the middle; Figure 7 Shown is an exploded view of the extrusion mechanism of the present invention; Figure 8 Shown as the present invention Figure 7 A magnified view of a section at point C; Figure 9 The diagram shown is a structural schematic of the mating components of the present invention. Figure 10 Shown as the present invention Figure 9 A magnified view of a section at point D; Figure 11 The diagram shows the connection structure between the movable column and the third mating column of the present invention. Figure 12 The diagram shown is a schematic representation of the use of the present invention. Figure 13 Shown is a top sectional view of the first connecting block of the present invention; Figure 14 Shown is an exploded view of the movable column of the present invention; Figure 15 Shown as the present invention Figure 14 A magnified view of a section at point E in the middle.

[0018] In the picture: Fixed sleeve 101, connecting sleeve 102, medicine outlet 103, isolation sleeve 104, first fixing block 105, push rod 106, connecting ring 107; First mating post 201, second mating post 202, movable sleeve 203, first limiting groove 204, first limiting block 205, first fixed post 206, first spring 207, third mating post 208; First connecting block 301, first sliding groove 302, connecting rod 303, movable column 304, second sliding groove 305, first mating block 306, second fixed column 307, second fixed block 308, extrusion plate 309, second limiting block 310, third limiting block 311, second limiting groove 312, third fixed block 313, tension spring 314, first fixing frame 315; First fixed groove 401, movable block 402, limiting post 403, tilting block 404, second spring 405, movable groove 406, second fixed groove 407, second fixed frame 408, second mating block 409; Protrusion 501, third fixing groove 502, fourth fixing groove 503; Second connecting post 601, fifth fixing groove 602, third connecting post 603, airbag 604, fourth limiting block 605, slot 606, locking block 607, fifth limiting block 608. Detailed Implementation

[0019] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification.

[0020] Please see Figures 1 to 15 It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0021] The following embodiments are for illustrative purposes only. These embodiments can be combined and are not limited to the content shown in any single embodiment below.

[0022] Please see Figures 1 to 3 As shown, the present invention provides a vaginal medication applicator, including an injection sleeve for delivering ointment to a designated location. The injection sleeve includes a fixed sleeve 101 and a connecting sleeve 102. The fixed sleeve 101 is threaded to the connecting sleeve 102, which is located above the fixed sleeve 101 and parallel to it. The connecting sleeve 102 has several sets of dispensing holes 103 for delivering the ointment into the vaginal wall. A first fixing block 105 is fixedly connected to the fixed sleeve 101. A push rod 106 is inserted inside the injection sleeve. The push rod 106 can... The injection sleeve moves vertically inside, with the top of the push rod 106 inside the injection sleeve and a portion of the push rod 106 outside the injection sleeve. An isolation sleeve 104 is provided between the push rod 106 and the injection sleeve, and a connecting ring 107 is provided at the bottom of the isolation sleeve 104. The connecting ring 107 is snapped into the inner wall of the connecting sleeve 102. The isolation sleeve 104 is soft and elastic, and will not affect the normal use of the drug dispensing mechanism inside the injection sleeve. The isolation sleeve 104 is used to separate the ointment from the push rod 106. The ointment will only be between the push rod 106 and the injection sleeve. In the relaxed state, the outer diameter of the isolation sleeve 104 is smaller than the inner diameter of the drug outlet 103.

[0023] In use, first fix the fixing sleeve 101, and simultaneously rotate the connecting sleeve 102 to separate the fixing sleeve 101 from the connecting sleeve 102. Then, medical personnel squeeze the ointment into the connecting sleeve 102, and then clip the connecting ring 107 into the fixing sleeve 101 to fix the isolation sleeve 104 onto the fixing sleeve 101. Next, insert the top end of the isolation sleeve 104 into the connecting sleeve 102, and then rotate the connecting sleeve 102 onto the fixing sleeve 101, using screws... The fixing sleeve 101 and the connecting sleeve 102 are then fixed together, completing the preparation work before drug administration. The medical staff then inserts the injection sleeve into the patient's vagina until the dispensing hole 103 moves to the lesion. The movement of the injection sleeve is then stopped, and the medication is applied. The push rod 106 is equipped with a dispensing mechanism. During medication application, simply pushing the push rod 106 causes the dispensing mechanism to move within the injection sleeve, dispensing the ointment through the dispensing hole 103 and allowing the ointment to be applied. On the inner wall of the patient's vagina; when the extrusion mechanism moves, it fixes the corresponding section of the isolation sleeve 104 to the inner wall of the injection sleeve, so that there is no gap between the isolation sleeve 104 and the inner wall of the injection sleeve, which can improve the sealing performance. At the same time, it can push the ointment towards the dispensing hole 103, which can prevent excessive loss of ointment during movement. When squeezing the ointment into the injection sleeve, it can squeeze the ointment as close as possible to the dispensing hole 103, which can reduce the loss of ointment during squeezing. The isolation sleeve 104 is soft and elastic, so when the extrusion mechanism pushes the isolation sleeve 104, the isolation sleeve 104 will be stretched, thus ensuring that the isolation sleeve 104 will not wrinkle when squeezed by the extrusion mechanism. Moreover, this stretching degree is within the stretching range of the isolation sleeve 104, and the isolation sleeve 104 will not be damaged during use. After the extrusion mechanism completely squeezes out the ointment, the outer wall of the isolation sleeve 104 is in complete and tight contact with the inner wall of the injection sleeve.

[0024] After the medication is applied to the patient, the isolation sleeve 104 separates the ointment from the dispensing mechanism. The fixing sleeve 101, push rod 106, and dispensing mechanism do not directly contact the ointment during the entire medication administration process. Therefore, the fixing sleeve 101, push rod 106, and dispensing mechanism are reusable and do not require disinfection after each use, eliminating concerns about cross-infection. The connecting sleeve 102, however, directly penetrates the patient's vagina and comes into direct contact with the ointment. Therefore, when applying medication to the next patient, medical staff only need to remove the connecting sleeve 102. 02 Separate from the fixed sleeve 101, replace the connecting sleeve 102 and the isolation sleeve 104, and the medication can be applied to the next patient; the connecting sleeve 102 and the isolation sleeve 104 can be selected for single use or multiple use depending on the specific material. If single use, they can be discarded after use. If reuse is required, they can be disinfected after use and reused. The fixed sleeve 101, push rod 106 and the medication dispensing mechanism can be reused without disinfection, which can effectively reduce the number of purchases, thereby saving economic costs and reducing the generation of medical waste.

[0025] like Figures 4 to 8 As shown, the extrusion mechanism includes a first connecting block 301. The outer wall of the first connecting block 301 contacts the isolation sleeve 104. The first connecting block 301, the isolation sleeve 104, and the inner wall of the injection sleeve are sealed together. A second fixing post 307 and a second fixing block 308 are fixedly connected to the top of the first connecting block 301. The second fixing post 307 is vertical. The side wall of the second fixing block 308 is composed of several sets of arc-shaped surfaces. Several sets of extrusion plates 309 are slidably engaged between the first connecting block 301 and the second fixing block 308. The extrusion plates 309 are arranged in a ring on the first connecting block 301. The extrusion plates 309 are arc-shaped. Several sets of extrusion plates 309 form an approximately circular shape at the top of the first connecting block 301. The upper ends of the extrusion plates 309 are all tightly attached to the outer wall of the second fixing block 308. Their centers are located on the axis of the first connecting block 301. The extrusion plates 309 are used to squeeze out the ointment in the injection sleeve. The extrusion plates 309 are elastic and their diameter is larger than that of the connecting sleeve 102. A second limiting block 310 and a third limiting block 311 are fixedly connected to the extrusion plate 309. The second limiting block 310 is located above the third limiting block 311. Both the second limiting block 310 and the third limiting block 311 are placed horizontally and face the center of the first connecting block 301. Several sets of second limiting grooves 312 are opened on the second fixing block 308 and the second limiting groove 312. The second limiting block 310 and the third limiting block 311 are slidably fitted into the corresponding second limiting grooves 312. Several sets of third fixing blocks 313 are fixedly connected to the second fixing post 307. The third limiting block 311 is "L" shaped. Several sets of third fixing blocks 313 are aligned with several sets of third limiting blocks 311. A tension spring 314 is provided between the third fixing block 313 and the third limiting block 311. The two ends of the tension spring 314 are fixedly connected to the third fixing block 313 and the third limiting block 311, respectively. like Figure 9 and Figure 12 As shown, a third fixing groove 502 is provided at the center of the first connecting block 301. The opening of the third fixing groove 502 is located at the bottom end of the first connecting block 301. A third mating post 208 is slidably engaged in the third fixing groove 502. Several sets of connecting rods 303 are arranged in a ring on the third mating post 208. The connecting rods 303 are horizontal. The several sets of connecting rods 303 are slidably engaged in several sets of first sliding grooves 302 respectively. Each set of connecting rods 303 is fixedly connected to a movable post 304. The movable post 304 is horizontal. The vertical movable column 304 has an isosceles trapezoidal horizontal cross section. The movable column 304 is located between the mating components. Several sets of movable columns 304 are staggered with several sets of extrusion plates 309. The connection between the movable column 304 and the two sets of extrusion plates 309 is aligned. Several sets of drug outlet holes 103 are not vertically aligned with the movable column 304. When the movable column 304 moves to be horizontal with the drug outlet hole 103, no movable column 304 blocks the drug outlet hole 103, and the number of drug outlet holes 103 between the two sets of movable columns 304 is equal. like Figures 5 to 7As shown, a movable sleeve 203 is fitted onto the third mating post 208. The movable sleeve 203 is located below the third mating post 208 and is hollow. Several sets of mating components are fixedly connected to the movable sleeve 203. The third mating post 208 and the movable sleeve 203 are slidably engaged in the third fixing groove 502. Several sets of protrusions 501 are provided in the third fixing groove 502. The protrusions 501 are located at the lower end of the third fixing groove 502 and above the third mating post 208. 501 is a small, semi-circular protrusion. The first mating post 201 has several sets of fourth fixing grooves 503, which are respectively aligned with the corresponding protrusions 501. The protrusions 501 can slide in the corresponding fourth fixing grooves 503. Under normal circumstances, they can block the movement of the third mating post 208. When the third mating post 208 is subjected to a large external force, it can pass over the protrusions 501 and allow the third mating post 208 to slide normally in the third fixing groove 502. A first mating post 201 is fixedly connected to the top of the push rod 106. A second mating post 202 is fixedly connected to the top of the first mating post 201. The diameter of the first mating post 201 is larger than the diameter of the second mating post 202. The diameter of the first mating post 201 is equal to the diameter of the movable sleeve 203. A third mating post 208 is located at the top of the movable sleeve 203. A second mating post 202 is provided at the bottom of the movable sleeve 203. The top of the second mating post 202 is inserted into the movable sleeve 203. The length of the movable sleeve 203 is greater than the length of the second mating post 202. Two sets of first limiting blocks 205 are fixedly connected to the second mating post 202. An opening is provided on the inner wall of the movable sleeve 203. Two sets of first limiting grooves 204 and two sets of first limiting blocks 205 are slidably fitted into the two sets of first limiting grooves 204 respectively. A first spring 207 is provided between the movable sleeve 203 and the second mating post 202. A first fixing post 206 is fixedly connected to both the second mating post 202 and the third mating post 208. The two sets of first fixing posts 206 are located between the second mating post 202 and the third mating post 208. The two ends of the first spring 207 are respectively fitted onto the two sets of first fixing posts 206. The two ends of the first spring 207 are in contact with the second mating post 202 and the third mating post 208 respectively. The first spring 207 is parallel to the movable sleeve 203.

[0026] During the drug dispensing process, medical staff push the push rod 106, which causes the first mating column 201 and the second mating column 202 to slide inside the injection sleeve. At this time, the second mating column 202 drives the third mating column 208 to move through the first spring 207. Since the third mating column 208 is blocked by the protrusion 501, the third mating column 208 drives the first connecting block 301 to move through the protrusion 501. The first connecting block 301 drives the entire drug dispensing mechanism to move. When the drug dispensing mechanism moves inside the injection sleeve, it can push the ointment inside the injection sleeve to move, and squeeze the ointment out evenly from several sets of drug outlet holes 103, thereby achieving the purpose of uniform drug dispensing. When the second fixing block 308 moves to the bottom of the connecting sleeve 102, there is little ointment remaining in the connecting sleeve 102. At this point, the medical staff continues to push the push rod 106. Because the second fixing block 308 is in contact with the bottom of the connecting sleeve 102, it cannot continue to slide within the connecting sleeve 102 and remains stationary. Meanwhile, the second mating post 202 slides within the movable sleeve 203, which remains stationary. The second mating post 202 then drives the first limiting block 205. The device slides within the first limiting groove 204, moving it closer to the first connecting block 301. Simultaneously, the first spring 207 is compressed, converting kinetic energy into elastic potential energy. The first spring 207 also applies a force to the third mating post 208. When the elastic potential energy within the first spring 207 reaches a certain value, it pushes the third mating post 208 past the protrusion 501. At this point, the first spring 207 is not fully compressed, and medical personnel may experience a slight jerking sensation. The third mating post 208 slides within the third fixed groove 502. When the third mating post 208 moves, it simultaneously drives several sets of connecting rods 303 and several sets of movable posts 304 to move. Both the connecting rods 303 and the movable posts 304 slide within the first sliding groove 302. Simultaneously, the first spring 207 extends, releasing its elastic potential energy. The first spring 207 pushes the third mating post 208 to slide within the third fixed groove 502, while the second mating post 202 continues to slide within the third mating post 208. Due to the movable sleeve 203... The length is greater than the length of the second mating post 202, so when the second mating post 202 is completely moved into the movable sleeve 203, the first mating post 201 will contact the movable sleeve 203. At this time, the first mating post 201 will drive the movable sleeve 203 to move. At this time, the movable sleeve 203 and the third mating post 208 slide in the third fixed groove 502 at the same time, and the protrusion 501 slides in the fourth fixed groove 503. The protrusion 501 will not affect the movement of the fourth fixed groove 503, and the speed is the same. The movable sleeve 203 will drive several sets of mating components to move at the same time. When the third mating post 208 moves to the bottom of the third fixed groove 502, several sets of mating components are completely located within the first connecting block 301. The first spring 207 is in an extended state, and the top of the movable post 304 simultaneously contacts the connecting sleeve 102. At this time, the push rod 106 continues to push, and the second mating post 202 pushes the movable sleeve 203 to move. However, because the movable post 304 is in contact with the connecting sleeve 102, the third mating post 208 cannot continue to move and remains stationary. The second mating post 202 continues to move and slides within the movable sleeve 203, compressing the first spring 207. At this time, several sets of mating components move upward, and the mating groups... The component horizontally pushes the corresponding extrusion plate 309, which in turn causes the second limiting block 310 and the third limiting block 311 to slide on the corresponding second limiting groove 312. At this time, the third limiting block 311 causes one end of the tension spring 314 to move, stretching the tension spring 314. The tension spring 314 is filled with elastic potential energy. Several sets of extrusion plates 309 expand outward with the center of the first connecting block 301 as the center. At this time, the extrusion plates 309 expand the corresponding section of the isolation sleeve 104 outward, extruding the ointment in parallel to ensure that ointment can be squeezed out from each set of dispensing holes 103. After the extrusion plates 309 expand outward a certain distance, both ends of the extrusion plates 309 will contact the corresponding movable column 304. The extrusion plate 309 slides on the inclined surface of the movable column 304. At this time, several sets of movable columns 304 divide the remaining ointment into several equal parts, thereby ensuring that the ointment squeezed out of each set of dispensing holes 103 is equal, thus ensuring uniform drug administration. This continues until the first mating column 201 drives the movable sleeve 203 to contact the third mating column 208. At this point, the push rod 106 cannot move. The mating assembly then moves completely between the second fixed block 308 and the first connecting block 301. After the mating assembly moves completely between the first connecting block 301 and the second fixed block 308, it moves vertically upward for a certain distance before the push rod 106 can no longer move. The mating assembly then extrudes the ointment. When plate 309 is pushed to its limit, both ends of the extrusion plate 309 abut against the inner wall of the connecting sleeve 102. Since the diameter of the extrusion plate 309 is larger than the diameter of the connecting sleeve 102, the center of the extrusion plate 309 will not abut against the connecting sleeve 102 without external force. The cooperating components simultaneously apply pressure to the extrusion plate 309, causing the extrusion plate 309 to deform and completely abut against the inner wall of the connecting sleeve 102. At this time, the extrusion plate 309, the connecting sleeve 102, and the isolation sleeve 104 are completely in contact. There is no ointment between the extrusion plate 309 and the connecting sleeve 102, which can ensure that the ointment squeezed out from each drug outlet 103 is equal, thereby making the drug administration uniform.

[0027] After use, medical staff release the push rod 106. At this time, the first spring 207 converts elastic potential energy into kinetic energy, and the first spring 207 extends, causing the second mating post 202, the first mating post 201, and the push rod 106 to move downwards, so that the first limiting block 205 slides within the first limiting groove 204 until the first spring 207 is fully extended. At this time, the first limiting block 205 moves to the bottom of the first limiting groove 204. While releasing the push rod 106, the connecting sleeve 102 is removed from the patient's vagina. Then, the push rod 106 is pulled downwards. The push rod 106 causes the first mating post 201 and the second mating post 202 to move downwards. The second mating post 202 engages with the first limiting groove 204 through the first limiting block 205, causing the movable sleeve 203 to move downwards. The movable sleeve 203 causes the mating assembly to move downwards, so that the mating assembly moves completely into the first connecting block 301. At this time, the tension spring 314 releases elastic potential energy. 14 shortens, causing the third limiting block 311 to slide within the second limiting groove 312. The third limiting block 311 causes the extrusion plate 309 and the second limiting block 310 to move until the extrusion plate 309 moves to fit against the second fixing block 308. At this time, several sets of extrusion plates 309 are reset. Then, the medical staff separates the connecting sleeve 102 from the fixing sleeve 101, drops the connecting sleeve 102 and the isolation sleeve 104 into the designated position, and then manually presses the movable column 304. The movable column 304 causes the connecting rod 303 and the third mating column 208 to move downward. The third mating column 208 causes the movable sleeve 203 to move downward until the third mating column 208 and the movable sleeve 203 are pressed below the protrusion 501. At this time, the protrusion 501 fixes the third mating column 208 and the movable sleeve 203 in the designated position within the third fixing groove 502, completing the reset of the mating components and the third mating column 208. At this time, the drug extrusion mechanism can extrude drugs again.

[0028] like Figure 9 As shown, a number of sets of mating components are arranged in a ring array inside the first connecting block 301. The mating components can move vertically on the first connecting block 301. The sets of mating components and the sets of extrusion plates 309 are interleaved. The sets of mating components are used to drive the sets of extrusion plates 309 to slide on the first connecting block 301. The mating components include a first fixing frame 315, which is fixedly connected to the movable sleeve 203. The first fixing frame 315 includes a set of horizontally placed T-shaped blocks and two sets of vertically placed rectangular blocks. The rectangular blocks are located above the T-shaped blocks, and both sets of rectangular blocks are vertically fixed to the two ends of the short side of the T-shaped blocks. One end of the long side of the T-shaped blocks is fixedly connected to the first fixing frame 315. The T-shaped blocks on the first fixing frame 315 are located below the connecting rod 303. Two sets of first mating blocks 306 are fixedly connected to the first fixing frame 315. The two sets of first mating blocks 306 are fixedly connected to the two sets of rectangular blocks respectively. The first mating blocks 306 are aligned with the corresponding extrusion plates 309. The first connecting block 301 has several sets of first sliding grooves 302 and several sets of second sliding grooves 305. The second fixing post 307 is slidably engaged in the first sliding groove 302, and the first mating blocks 306 are slidably engaged in the second sliding grooves 305. The surface of the first mating blocks 306 facing the extrusion plate 309 is inclined.

[0029] When the assembly is in operation, the movable sleeve 203 drives the first fixed frame 315 and two corresponding sets of first mating blocks 306 to move. At this time, the first fixed frame 315 slides in the first sliding groove 302, and the first mating blocks 306 slide in the second sliding groove 305. When the top of the first mating block 306 slowly moves out of the second sliding groove 305, the inclined surface of the first mating block 306 contacts the extrusion plate 309. At this time, the extrusion plate 309 has first mating blocks 306 in contact with both its left and right ends. When the first mating block 306 moves upward, it contacts the extrusion plate 309 through its inclined surface, converting the vertical displacement of the first mating block 306 into the horizontal displacement of the extrusion plate 309, thereby pushing the extrusion plate 309 to move. This allows several sets of extrusion plates 309 to expand outward simultaneously, squeezing the ointment in the connecting sleeve 102 and squeezing it through the drug outlet 103 to the vaginal wall, so that the amount of drug dispensed in each set of drug outlet 103 is consistent, thereby achieving the purpose of uniform drug administration.

[0030] like Figure 10As shown, each of the several sets of first mating blocks 306 is provided with a supporting element. The supporting element is used to support the extrusion plate 309, so that the extrusion plate 309 can completely fit against the inner wall of the injection sleeve. The supporting element includes a movable block 402. The first mating block 306 has a first fixing groove 401 and a second fixing groove 407, which are connected. One end of the movable block 402 is inserted into the second fixing groove 407, and the other end of the movable block 402 is slidably engaged in the first fixing groove 401. A limiting post 403 is fixedly connected to the movable block 402. The limiting post 403 is located at the end of the movable block 402 away from the second fixed groove 407. A movable groove 406 is provided in the first mating block 306. The limiting post 403 is slidably fitted in the movable groove 406. A second spring 405 is provided in the movable groove 406. The second spring 405 is fitted on the movable block 402. One end of the second spring 405 contacts the limiting post 403, and the other end of the second spring 405 contacts the side wall of the movable groove 406 near the second fixed groove 407. An inclined block 404 is fixedly connected to one end of the movable block 402 away from the second fixed groove 407. The inclined block 404 is inclined. Several sets of second fixed frames 408 are arranged in a circular array on the second fixed column 307. The second fixed frames 408 are "Y" shaped. Two sets of second mating blocks 409 are fixedly connected to the second fixed frames 408. The second mating blocks 409 are perpendicular to the second fixed frames 408. The several sets of second mating blocks 409 are vertically aligned with the several sets of inclined blocks 404 respectively. The second mating blocks 409 are located above the inclined blocks 404. The bottom surface of the second mating blocks 409 is inclined. The inclined surface of the inclined block 404 is parallel to the inclined surface of the second mating blocks 409.

[0031] When the supporting element is in operation, just as the mating element has fully moved between the second fixed block 308 and the first connecting block 301, the tilting block 404 and the second mating block 409 just come into contact. At this time, the first mating block 306 continues to move upward, while the second mating block 409 remains stationary. Therefore, the tilting block 404 moves upward, causing it to slide on the second mating block 409. Since the contact surface between the tilting block 404 and the second mating block 409 is tilted, the tilting block 404 moves upward while simultaneously moving towards the pressing plate 309. At this time, the tilting block 404 drives the limiting post 403 and... The movable block 402 slides within the movable groove 406 and the second fixed groove 407. The movable block 402 will move out of the second fixed groove 407, and at the same time, the second spring 405 will be compressed by the limiting post 403. The elastic potential energy of the limiting post 403 increases, and the movable block 402 will first move to contact the extrusion plate 309. Then the movable block 402 continues to move, causing the extrusion plate 309 to deform until the extrusion plate 309 is completely in contact with the inner wall of the first mating post 201 and the isolation sleeve 104. At this time, the ointment in the first mating post 201 is completely squeezed out, and the amount of medicine dispensed in each set of medicine outlet holes 103 is consistent, achieving the purpose of uniform drug administration.

[0032] When the mating component moves downward, it will drive the supporting element to move downward, causing the tilting block 404 to separate from the second mating block 409. After the tilting block 404 separates from the second mating block 409, the second spring 405 releases its elastic potential energy and extends, driving the limiting post 403 to move. The limiting post 403 drives the movable block 402 and the tilting block 404 to move. At this time, the direction of movement is away from the extrusion plate 309, until the second spring 405 returns to its initial state. At this time, one end of the movable block 402 also moves completely into the second fixed groove 407. At this time, the supporting element returns to its initial state.

[0033] like Figure 14 and Figure 15 As shown, the movable column 304 includes a second connecting column 601 and two sets of third connecting columns 603. The third connecting columns 603 are parallel to the second connecting column 601. The second connecting column 601 is fixedly connected to the connecting rod 303. The cross-section of the second connecting column 601 is an isosceles trapezoid. The third connecting column 603 is movably connected to the connecting rod 303. A fifth fixing groove 602 is provided on the second connecting column 601. The opening of the fifth fixing groove 602 faces away from the center of the first connecting block 301. The two sets of third connecting columns 603 are slidably engaged on the second connecting column 601. The two sets of third connecting columns 603 are located on both sides of the second connecting column 601. The third connecting columns 603 slide along the center of the first connecting block 301 on the second connecting column 601. The second connecting post 601 is fixedly connected to both ends with a fourth limiting block 605, and the third connecting post 603 is fixedly connected to both ends with a fifth limiting block 608. The two sets of fourth limiting blocks 605 are located between the two sets of fifth limiting blocks 608, and the fourth limiting blocks 605 are in contact with the corresponding fifth limiting blocks 608. A locking block 607 is fixedly connected to the second connecting post 601, and a locking groove 606 is opened on the third connecting post 603. The locking block 607 is locked in the locking groove 606. The locking block 607 is used to prevent the third connecting post 603 from separating from the second connecting post 601. An airbag 604 is provided between the second connecting post 601 and the two sets of third connecting posts 603. The airbag 604 completely fills the gap between the second connecting post 601 and the two sets of third connecting posts 603.

[0034] When the supporting element applies pressure to the extrusion plate 309 and causes deformation, both ends of the extrusion plate 309 will move to the sides. During this movement, the sidewalls of the extrusion plate 309 will also fit tightly against the inner walls of the isolation sleeve 104 and the connecting sleeve 102. As the sidewalls of the extrusion plate 309 move, they will drive the third connecting post 603 to move. The third connecting post 603 moves towards the fourth limiting block 605. At this time, the slot 606 will separate from the locking block 607. The movement of the third connecting post 603 will drive the two... The fifth limiting block 608 moves, and the two sets of fifth limiting blocks 608 slide on the fourth limiting block 605. At this time, the internal space enclosed by the second connecting post 601 and the two sets of third connecting posts 603 will decrease, thereby compressing the airbag 604, increasing the internal pressure of the airbag 604, and thus reducing the volume of the airbag 604. This ensures that the volume of the airbag 604 is always equal to the volume of the space enclosed by the second connecting post 601 and the two sets of third connecting posts 603, until the compression plate 309 is completely flattened. When both sets of third connecting posts 603 are completely located inside the fifth fixing groove 602, the movable post 304 ensures that the movement of both ends of the extrusion plate 309 is not obstructed during flattening. Otherwise, the flattened state might not be ideal due to the ends being held against it, preventing the ointment from being fully squeezed into the patient's vagina. This results in some ointment remaining in the injection sleeve, leading to waste. Furthermore, the movable post 304 ensures close contact between the movable post 304 and the extrusion plate 309 during horizontal movement, preventing ointment from remaining in the vagina. During horizontal movement, the extrusion plate 309 only contacts the movable post 304 and does not exert force on it towards the fourth limiting block 605. Therefore, the extrusion plate 309 does not move the third connecting post 603 during horizontal movement, ensuring that all ointment is squeezed into the patient's vagina and not left in the injection sleeve. When the supporting element separates from the extrusion plate 309, the extrusion plate 309 will return to its initial state due to its own elasticity. At this time, the third connecting post 603 is not subjected to a force towards the fourth limiting block 605. Since the pressure inside the airbag 604 is greater than the air pressure, the airbag 604 will apply a force to the third connecting post 603 away from the fourth limiting block 605. The third connecting post 603 will move away from the fourth limiting block 605, causing the two sets of fifth limiting blocks 608 to slide on the two sets of fourth limiting blocks 605 until the slot 606 is locked on the locking block 607. At this time, the third connecting post 603 can no longer move. At this time, the pressure inside the airbag 604 is slightly greater than the air pressure. The force applied by the airbag 604 to the third connecting post 603 is very small and will not push the third connecting post 603 out of the second connecting post 601. At this time, the two sets of third connecting posts 603 are fixed on the second connecting post 601, and the movable post 304 returns to its initial state.

[0035] In summary, when using this invention, firstly, the fixing sleeve 101 and the connecting sleeve 102 are separated. Then, the ointment is squeezed into the dispensing hole 103, and the isolation sleeve 104 is fixed inside the connecting sleeve 102. At this time, the ointment is completely located between the connecting sleeve 102 and the isolation sleeve 104. Then, the connecting sleeve 102 is fixed to the fixing sleeve 101, completing the preparation for drug administration. Then, the operator inserts the connecting sleeve 102 into the patient's vagina and pushes the push rod 106. The push rod 106 drives the drug dispensing mechanism to slide within the fixing sleeve 101 and the connecting sleeve 102. At this time, the isolation sleeve 104 separates the drug dispensing mechanism from the ointment. The isolation sleeve 104 can prevent the drug dispensing mechanism from having direct contact with the ointment. The ointment is squeezed out of the dispensing hole 103, thus applying the ointment into the patient's vagina. When the second fixed block 308 in the squeezing mechanism contacts the bottom surface of the connecting sleeve 102, the first connecting block 301 remains stationary. The push rod 106 drives the cooperating component to move, and the cooperating component drives several sets of squeezing plates 309 to expand outward in parallel, squeezing the ointment out of the dispensing hole 103. At the same time, the holding element is activated to ensure that all the ointment in the connecting sleeve 102 is squeezed out, minimizing the amount of ointment left in the connecting sleeve 102, improving the utilization rate of the ointment, and ensuring that the amount of medicine dispensed from each set of dispensing holes 103 is consistent, so that the amount of medicine dispensed from different dispensing holes 103 is not different, thus achieving the purpose of uniform drug administration.

[0036] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A vaginal delivery device, characterized in that: Including the injection sleeve; The injection sleeve has several sets of injection holes, which are arranged vertically and in a circular array on the outer wall of the injection sleeve. These sets of injection holes are used to deliver the ointment into the vaginal wall. A drug extrusion mechanism is located inside the injection sleeve. The drug extrusion mechanism includes a first connecting block, a second fixing post, a second fixing block, and several sets of extrusion plates. The first connecting block is sealed to the injection sleeve. The top end of the first connecting block is fixedly connected to the second fixing block through the second fixing post. The first connecting block can move axially within the injection sleeve. Several sets of extrusion plates are arranged in a ring around the axis of the injection sleeve. Several sets of extrusion plates are located above the first connecting block. Several sets of extrusion plates are slidably connected to the second fixing block. Several sets of extrusion plates can move radially along the injection sleeve. The extrusion plates are arc-shaped and are used to extrude the ointment inside the injection sleeve.

2. The vaginal applicator according to claim 1, characterized in that: The extrusion mechanism further includes several sets of cooperating components, which are arranged in a circular array within the first connecting block. The cooperating components can move vertically on the first connecting block. The cooperating components and the extrusion plates are interleaved. The cooperating components are used to drive the extrusion plates to slide on the first connecting block. The mating assembly includes a first fixing frame, on which two sets of first mating blocks are fixedly connected. The first mating blocks are aligned with the corresponding extrusion plates. The first connecting block has several sets of first sliding grooves and several sets of second sliding grooves. The second fixing post is slidably engaged in the first sliding groove, and the first mating block is slidably engaged in the second sliding groove. The surface of the first mating block facing the extrusion plate is inclined.

3. A vaginal applicator according to claim 2, characterized in that: The extrusion mechanism also includes a third cooperating column, on which a plurality of connecting rods are arranged in a ring. The connecting rods are horizontal, and the plurality of connecting rods are slidably engaged in the plurality of first sliding grooves. The first fixing frame is located below the connecting rods. Each of the plurality of connecting rods is fixedly connected to a movable column, which is vertical and has an isosceles trapezoidal horizontal cross section. The movable column is located between the two sets of first mating blocks of the mating assembly, and the several sets of movable columns are staggered with the several sets of extrusion plates. The movable column is aligned with the connection between the two sets of extrusion plates. A movable sleeve is fitted onto the third mating column. The movable sleeve is located below the third mating column and is hollow. Several sets of the first fixing brackets are fixed on the movable sleeve.

4. A vaginal delivery device according to claim 3, characterized in that: The sidewall of the second fixing block is composed of several sets of arc-shaped surfaces, and the arc-shaped surfaces of the second fixing block are completely attached to the extrusion plate; The extrusion plate is elastic, and the diameter of the extrusion plate is larger than the diameter of the connecting sleeve. The extrusion plate is fixedly connected with a second limiting block and a third limiting block. The second limiting block is located above the third limiting block. Both the second limiting block and the third limiting block are placed horizontally and face the center of the first connecting block. Several sets of second limiting grooves are opened on the second fixing block and the second limiting groove. The second limiting block and the third limiting block are respectively slidably locked in the corresponding second limiting groove. Several sets of third fixing blocks are fixedly connected to the second fixing column. The third limiting block is "L" shaped. The several sets of third fixing blocks are respectively aligned with the several sets of third limiting blocks. A tension spring is provided between the third fixing block and the third limiting block. The two ends of the tension spring are respectively fixedly connected to the third fixing block and the third limiting block.

5. A vaginal delivery device according to claim 4, characterized in that: Each of the first mating blocks is provided with a supporting element, which is used to support the extrusion plate so that the extrusion plate can be completely fitted with the inner wall of the injection sleeve; The supporting element includes a movable block. The first mating block has a first fixing groove and a second fixing groove, which are connected. One end of the movable block is inserted into the second fixing groove, and the other end of the movable block is slidably engaged in the first fixing groove. A limiting post is fixedly connected to the movable block. The limiting post is located at the end of the movable block away from the second fixing groove. The first mating block has the movable groove, and the limiting post is slidably engaged in the movable groove. A second spring is provided in the movable groove. The second spring is fitted on the movable block. One end of the second spring contacts the limiting post, and the other end of the second spring contacts the side wall of the movable groove near the second fixing groove. An inclined block is fixedly connected to one end of the movable block away from the second fixed groove. The inclined block is inclined. Several sets of second fixed frames are arranged in a circular array on the second fixed column. The second fixed frames are "Y" shaped. Two sets of second mating blocks are fixedly connected to the second fixed frames. The several sets of second mating blocks are vertically aligned with the several sets of inclined blocks. The second mating blocks are located above the inclined blocks. The bottom surface of the second mating blocks is inclined. The inclined surface of the inclined blocks is parallel to the inclined surface of the second mating blocks.

6. A vaginal delivery device according to claim 5, characterized in that: The movable column includes a second connecting column and two sets of third connecting columns. The second connecting column is fixedly connected to the connecting rod and has an isosceles trapezoidal cross-section. The third connecting column is movably connected to the connecting rod. A fifth fixing groove is provided on the second connecting column, with the opening of the fifth fixing groove facing away from the center of the first connecting block. The two sets of third connecting columns are slidably engaged on the second connecting column and are located on both sides of the second connecting column. The third connecting columns slide along the center of the first connecting block on the second connecting column. The second connecting column is fixedly connected to both ends with a fourth limiting block, and the third connecting column is fixedly connected to both ends with a fifth limiting block. The two sets of fourth limiting blocks are located between the two sets of fifth limiting blocks. The fourth limiting block is in contact with the corresponding fifth limiting block. A locking block is fixedly connected to the second connecting column, and a locking groove is opened on the third connecting column. The locking block is locked in the locking groove. The locking block is used to prevent the third connecting column from separating from the second connecting column. An airbag is provided between the second connecting post and the two sets of third connecting posts, and the airbag completely fills the gap between the second connecting post and the two sets of third connecting posts.

7. A vaginal delivery device according to claim 6, characterized in that: The third mating post is located at the top of the movable sleeve, and the bottom of the movable sleeve is provided with a second mating post. The top of the second mating post is inserted into the movable sleeve. Two sets of first limiting blocks are fixedly connected to the second mating post. Two sets of first limiting grooves are opened on the inner wall of the movable sleeve. The two sets of first limiting blocks are slidably locked in the two sets of first limiting grooves respectively. A first spring is provided between the movable sleeve and the second mating post. A first fixing post is fixedly connected to both the second mating post and the third mating post. The two sets of first fixing posts are located between the second mating post and the third mating post. The two ends of the first spring are respectively fitted onto the two sets of first fixing posts. The two ends of the first spring are in contact with the second mating post and the third mating post respectively. The first spring is parallel to the movable sleeve.

8. A vaginal applicator according to claim 7, characterized in that: The first connecting block has a third fixing groove, the opening of the third fixing groove is located at the bottom end of the first connecting block, and the third mating column and the movable sleeve are both slidably fitted into the third fixing groove; The third fixing groove is provided with several sets of protrusions. The protrusions are located at the lower end of the third fixing groove and above the third mating post. The protrusions are used to lock the third mating post and the movable sleeve. The first mating post is provided with several sets of fourth fixing grooves, which are respectively aligned with the corresponding protrusions.

9. A vaginal delivery device according to claim 8, characterized in that: The injection sleeve includes a fixed sleeve and a connecting sleeve. The fixed sleeve is connected to the connecting sleeve by threads. The connecting sleeve is located above the fixed sleeve. Several sets of drug outlet holes are formed on the connecting sleeve. A first fixing block is fixedly connected to the fixed sleeve. A push rod is provided inside the injection sleeve. The push rod is slidably engaged inside the injection sleeve. A first mating post is fixedly connected to the top of the push rod. A second mating post is fixedly connected to the top of the first mating post. The diameter of the first mating post is larger than the diameter of the second mating post. The diameter of the first mating post is equal to the diameter of the movable sleeve.

10. A vaginal delivery device according to claim 9, characterized in that: An isolation sleeve is provided between the push rod and the injection sleeve. The isolation sleeve is soft and elastic and will not affect the normal use of the drug dispensing mechanism inside the injection sleeve. A connecting ring is provided at the bottom end of the isolation sleeve and is snapped into the inner wall of the connecting sleeve.

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