A precise controllable vaginal administration positioning and pushing device

Abstract

The application belongs to the technical field of medical devices. In view of the poor smearing effect of the vaginal administration device, the application provides a precise and controllable vaginal administration positioning and pushing device, which comprises a drug administration outer tube, a drug administration inner tube, a first piston rod, a massage smearing air bag and a driving mechanism. The drug administration inner tube is arranged inside the drug administration outer tube, and one end of the drug administration inner tube is connected with the first piston rod, and the other end of the drug administration inner tube is connected with the driving mechanism. The massage smearing air bag is slidably sleeved on the drug administration tube, and one end of the driving mechanism away from the drug administration inner tube penetrates out of the drug administration tube and is connected with the massage smearing air bag. While the drug is applied to the vaginal wall, the driving mechanism drives the massage smearing air bag to uniformly smear the liquid medicine sprayed by the drug administration tube on the vaginal wall, so that the medicine is uniformly distributed at different depths in the vagina, and the vaginal wall is massaged at the same time, the comfort degree of the drug administration process is improved, the pain and foreign body sensation are reduced, and the treatment compliance of the patient is improved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a precise and controllable vaginal drug delivery and positioning device. Background Technology

[0002] This method involves directly inserting suppositories, gels, creams, or liquids into the vagina, allowing the medication to reach high concentrations on the vaginal wall, cervix, and other affected areas. The medication is absorbed locally, exerting anti-infective, anti-inflammatory, flora-regulating, or hormone-supplementing effects, making it suitable for targeted treatment of specific gynecological problems. Traditional vaginal delivery devices lack depth markings and positioning limits, relying entirely on the operator's subjective judgment for insertion depth. This easily leads to insertions that are too deep, too shallow, or misaligned, preventing accurate delivery of the medication to the affected area. The medication is prone to dislodgement, displacement, and accumulation, significantly reducing treatment effectiveness, especially for targeted drug delivery to the cervix.

[0003] Patent CN222488566U discloses a vaginal medication applicator, comprising a sponge applicator, a control rod, a medication storage tube, an inner push rod, a piston body, an auxiliary handle, and a control rod. One end of the control rod penetrates the outer wall of the medication storage tube, and an inlet is provided at the penetrating end. A first connecting rod and a second connecting rod are fixedly connected to the end of the control rod with the inlet. A diversion channel is provided inside the control rod, which is connected to the inlet. In use, the control rod drives the sponge applicator to the vaginal medication application area. By rotating the auxiliary handle, the inner push rod and piston body rotate. The first and second connecting rods drive the control rod to rotate, thereby rotating the sponge applicator to apply the medication. The auxiliary handle can also be pushed, and the inner push rod drives the piston body to push the medication in the medication storage tube through the inlet into the diversion channel. At this time, the medication will enter the sponge applicator from multiple diversion holes.

[0004] However, in the above-mentioned technical solution, the sponge is squeezed by the vaginal wall during actual use, causing the sponge to deform. The density of the sponge increases at the location where it is squeezed and deformed, making it unable to absorb the medicine. This results in some areas of the sponge having more medicine and some areas having less medicine, and the distribution of the absorbed medicine is uneven. Even if the sponge is rotated to apply the medicine, the medicine can only be evenly applied in the same axial position inside the vagina, and the drug concentration at different depths inside the vagina cannot be the same, resulting in poor drug application effect of the overall device. Summary of the Invention

[0005] The purpose of this invention is to overcome the problem of poor application effect of existing vaginal delivery devices.

[0006] To achieve the above objectives, the present invention adopts the following technical approach: providing a precise and controllable vaginal drug delivery device, comprising an outer drug delivery tube, an inner drug delivery tube, a first piston rod, a massage-type applicator balloon, and a driving mechanism; wherein, the inner drug delivery tube is disposed inside the outer drug delivery tube, with one end connected to the first piston rod and the other end connected to the driving mechanism; the massage-type applicator balloon is slidably sleeved on the drug delivery tube; and the end of the driving mechanism away from the inner drug delivery tube extends through the drug delivery tube and connects to the massage-type applicator balloon. This invention, while applying medication to the vaginal wall, uses the driving mechanism to drive the massage-type applicator balloon to evenly apply the medication sprayed from the drug delivery tube onto the vaginal wall, ensuring uniform distribution of the medication at different depths within the vagina. Simultaneously, it massages the vaginal wall, improving comfort during drug delivery, reducing pain and foreign body sensation, and enhancing patient compliance.

[0007] Based on the above technical concept, the technical solution adopted by this invention is as follows: A precise and controllable vaginal drug delivery device includes an external delivery tube and a first piston rod, and further includes: The inner drug delivery tube is located inside the outer drug delivery tube and is connected to the first piston rod; Massage-type applicator airbag, which slides onto the drug delivery tube; The drive mechanism is located at the end of the drug delivery tube away from the first piston rod, and is connected to both the first piston rod and the massage-type applicator airbag.

[0008] In the above technical solution, preferably, the driving mechanism includes: The rack has one end connected to the operating end of the first piston rod and the other end slidably connected to the inner wall of the drug delivery tube; The transmission gear set is rotatably mounted on the inner wall of the drug delivery tube, and its upper end is meshed with the rack. The pressurization component is connected at one end to both the transmission gear set and the inner drug delivery tube, and at the other end, it extends through the outer drug delivery tube and connects to the massage-type applicator airbag.

[0009] To further specify the above technical solution, the pressurization component includes: The guiding pressurization unit has a second helical gear at one end, which meshes with the transmission gear set, and the guiding pressurization unit is connected to the drug delivery tube through a connecting frame; The combined pressurization unit is installed on the inner wall of the drug delivery tube. One end is connected to the other end of the guiding pressurization unit, and the other end is connected to both the drug delivery tube and the massage-type applicator.

[0010] To further specify the above technical solution, the combined pressurization unit includes: The applicator pressurizing cylinder has a piston block that is movable inside. The piston block is connected to the guide pressurizing unit, and the bottom surface of the applicator pressurizing cylinder is connected to the side wall of the drug delivery tube through the first vent tube, which is used to drive the massage-type applicator airbag to move axially. Two massage pressure cylinders are symmetrically arranged on both sides of the application pressure cylinder, and the bottom surface of each massage pressure cylinder is connected to the massage application airbag through a second air pipe to drive the massage application airbag to expand radially.

[0011] To further specify the above technical solution, the massage pressure cylinder is provided with a reset element and a second piston rod; One end of the reset component is connected to the corresponding massage pressure cylinder, and the other end is connected to the second piston rod. The end of the second piston rod away from the reset component is movably connected to the guide pressure unit.

[0012] To further refine the above technical solution, pull rods are symmetrically arranged on both sides of the piston block, and the pull rods abut against the corresponding second vent pipe.

[0013] Further specifying the above technical solution, the guiding pressurization unit includes: The frustum-shaped guide post has a guide groove on its side wall. The guide groove is used to connect with the piston block, and the side near the inner tube of the drug delivery tube is connected to the transmission gear set through a second helical gear. Multiple massage pressure blocks are arranged circumferentially on a frustum-shaped guide post and are movably connected to each second piston rod.

[0014] Further defining the above technical solution, the massage-type applicator airbag includes an airbag ring and a metal ring disposed inside the airbag ring.

[0015] Further defining the above technical solution, an inflation chamber for communicating with the first ventilation tube is provided inside the side wall of the drug delivery tube, and a magnetic block is interactively arranged inside the inflation chamber, with the magnetic sheet magnetically connected to the metal ring.

[0016] The above technical solution is further specified by including an angle adjustment mechanism, which comprises: Angle adjustment seat; A rotating ring is fitted onto the drug delivery tube, and first retaining rings are provided at both ends; The locking button is slidably mounted on the angle adjustment seat, and a second retaining ring is provided at its end, which engages with the retaining ring. Beneficial effects

[0017] I. This invention, through the combined design of the drug delivery tube, the massage-type applicator airbag, and the drive mechanism, allows medical personnel to simultaneously inject the drug solution in the drug delivery tube into the patient's vagina by simply pushing the first piston tube. The massage-type applicator airbag is intermittently inflated and deflated and moves laterally back and forth, simultaneously realizing the three operations of drug injection, massage, and uniform applicator. This improves the patient's comfort and the uniformity of drug application, thereby improving the overall drug delivery efficiency and drug application effect of the device.

[0018] Second, the present invention, through the combined design of the pull rod, the second vent tube, the piston block and the massage-type applicator airbag, can drive the second vent tube to move synchronously during the reciprocating movement of the massage-type applicator airbag, thereby preventing the second vent tube from falling off and improving the stability of the overall device.

[0019] Third, the present invention, through the combined design of frustum-shaped guide column, massage pressure block, helical gear and guide groove, can simultaneously drive the piston block and the second piston rod to move, with simple structure and reduced manufacturing cost of the overall device.

[0020] Fourth, the present invention, through the combined design of the drug delivery tube and the angle adjustment mechanism, can lock the main angle of the drug delivery tube, thereby assisting medical staff or patients in administering medication.

[0021] Fifth, the drug delivery tube provided by the present invention is also slidably connected with a positioning ring, which can limit the depth of the drug delivery tube entering the patient's body, preventing the drug delivery tube from going too deep or too shallow. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram of a precise and controllable vaginal drug delivery and positioning device provided in an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the device from another perspective; Figure 3 for Figure 2 Enlarged view of point A in the middle; Figure 4 for Figure 1 Schematic diagram of the structure of the Chinese medicine administration tube 1; Figure 5 for Figure 4 A half-sectional view of the device shown; Figure 6 for Figure 4 A schematic diagram showing the connection between the drug delivery tube, the massage-type application airbag, and the drive mechanism; Figure 7 for Figure 6 Enlarged view of point B in the middle; Figure 8 for Figure 6 A schematic diagram of the device from another perspective; Figure 9A schematic diagram showing the connection relationship between the guiding pressurization unit and the transmission gear set; Figure 10 A schematic diagram showing the connection relationship between the applicator pressure cylinder, the guide pressure unit, and the massage applicator airbag; Figure 11 for Figure 1 A schematic diagram of the structure of the drug delivery tube in the device shown after partial sectional cutting; Figure 12 for Figure 11 Enlarged view of point C in the middle; Figure 13 This is a schematic diagram of the drug delivery tube. Figure 14 This is a schematic diagram of the angle adjustment mechanism; Figure 15 for Figure 14 A schematic diagram of the structure after half-section at the location where the centrally installed cylinder is installed; Figure 16 for Figure 15 Disassembly diagram of the device shown.

[0024] Among them, 1. Drug delivery tube; 2. First piston rod; 3. Inner tube for drug administration; 31. Drug storage tube; 32. Infusion tube; 33. Drug dispensing tray; 4. Massage-type application airbag; 41. Airbag ring; 42. Metal ring; 5. Gear rack; 6. Transmission gear set; 61. First transmission unit; 62. Second transmission unit; 7. Pressurization components; 71. Guided pressurizing unit; 71a. Frustum-shaped guide post; 71b. Guide groove; 71c. Massage pressurizing block; 71d. Second helical gear; 72. Coating and pressurizing cylinder; 72a. Piston block; 72a-1. Sliding ball; 72b. First vent pipe; 72c. Pull rod; 72d. Magnetic block; 73. Massage and pressure cylinder; 73a. Reset component; 73b. Second piston rod; 73c. ​​Second vent pipe; 74. Connecting frame; 8. Angle adjustment mechanism; 81. Angle adjustment seat; 82. Rotating ring; 82a. Mounting cylinder; 83. First retaining ring; 84. Second retaining ring; 85. Locking button; 86. Return spring; 9. Positioning ring; 91. Locking screw. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] In the description of this invention, it should be understood that the terms "length direction," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features limited to "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Example 1 This embodiment provides a precise and controllable vaginal drug delivery and positioning device, such as... Figures 1 to 16 As shown, it includes an outer drug delivery tube 1, a first piston rod 2, an inner drug delivery tube 3, a massage-type applicator 4, and a drive mechanism.

[0029] The drug delivery tube 1 is a cylindrical structure with an opening, and multiple injection ports are provided at the end of the drug delivery tube 1 away from the opening.

[0030] The inner drug delivery tube 3 is fixed inside the outer drug delivery tube 1. Specifically, the inner drug delivery tube 3 includes a drug storage tube 31, a drug delivery tube 32, and a drug dispensing tray 33. The drug storage tube 31 is made of a rigid material, for example, medical plastic.

[0031] The drug storage tube 31 is a cylindrical tubular structure with an opening. The first piston rod 2 is located inside the opening of the drug storage tube 31 and is slidably connected to the drug storage tube 31. The fixed connection between the drug storage tube 31 and the drug delivery tube 1 is existing technology, and this embodiment of the invention does not improve upon it. For example, the fixed connection method is thermoforming welding.

[0032] The medicine tray 33 has a circular sheet structure, and a through hole is opened at the center of the medicine tray 33.

[0033] One end of the infusion tube 32 is connected to the storage tube 31, and the other end is fixedly connected to the side of the through hole of the dispensing tray 33. In this way, the liquid medicine in the storage tube 31 enters the dispensing tray 33 after passing through the infusion tube 32, and then the liquid medicine in the dispensing tray 33 enters the interior of the drug administration tube 1 through the through hole, and finally flows out from the injection port of the drug administration tube 1 and reaches the vaginal wall of the patient.

[0034] The massage-type applicator 4 is sleeved on the drug delivery tube 1 and located on the side away from the first piston rod 2. Specifically, the massage-type applicator 4 includes an airbag ring 41 and a metal ring 42 fixedly disposed inside the airbag ring 41. The metal ring 42 is made of a waterproof medical alloy; for example, this alloy is a samarium cobalt permanent magnet.

[0035] Correspondingly, an active cavity corresponding to the massage-type applicator airbag 4 is provided on the side wall of the drug delivery tube 1. This active cavity is connected to the drive mechanism so that the drive mechanism can drive the massage-type applicator airbag 4 to move back and forth.

[0036] The drive mechanism includes a rack 5, a transmission gear set 6, and a pressurization assembly 7.

[0037] The rack 5 is arranged along the axial direction of the drug delivery tube 1 between the outer drug delivery tube 1 and the inner drug delivery tube 3. Specifically, the rack 5 is a square plate structure, and one end of the rack 5 is fixedly connected to the hand-held end of the first piston rod 2, and the other end is meshed with the transmission gear set 6.

[0038] The transmission gear set 6 includes a first transmission unit 61 and a second transmission unit 62 that meshes with the first transmission unit 61.

[0039] The first transmission unit 61 includes a first connecting shaft, on which a first transmission gear and a second transmission gear are fixedly mounted. The first transmission gear meshes with the rack 5. The second transmission unit 62 includes a second connecting shaft, on which a third transmission gear and a first helical gear are fixedly mounted; wherein the third transmission gear and the second transmission gear are meshed together; the first helical gear is meshed with the pressure assembly 7. In use, the rack 5 moves, driving the first transmission gear to rotate, which in turn drives the second transmission gear to rotate in the same direction via the first connecting shaft, the second transmission gear drives the third transmission gear to rotate in the same direction, and the third transmission gear drives the first helical gear to rotate synchronously via the second connecting shaft.

[0040] The pressurization assembly 7 includes a guide pressurization unit 71 and a combined pressurization unit that drives the massage-type applicator airbag 4 to perform intermittent inflation and deflation and linear reciprocating movement. The combined pressurization unit is slidably connected to the guide pressurization unit 71.

[0041] The pressurization unit 71 includes a frustum-shaped guide post 71a, multiple massage pressurization blocks 71c, and a second helical gear 71d.

[0042] Specifically, a guide groove 71b is provided on the side of the frustum-shaped guide post 71a; the guide groove 71b is a wave-shaped groove, and the guide groove 71b is used for sliding connection with the combined pressurization unit. A connecting frame 74 is rotatably mounted on the frustum-shaped guide post 71a, and the end of the connecting frame 74 away from the frustum-shaped guide post 71a is rotatably connected to the bottom surface of the drug delivery inner tube 3, thereby realizing the installation of the frustum-shaped guide post 71a.

[0043] The second helical gear 71d is fixedly installed at one end of the frustum-shaped guide post 71a near the drug delivery tube 3, and the second helical gear 71d is meshed with the first helical gear; when the first helical gear rotates, the first helical gear drives the second helical gear 71d to rotate synchronously.

[0044] Multiple massage pressure blocks 71c are arranged circumferentially on a frustum-shaped guide post 71a, and are located on the side of the frustum-shaped guide post 71a closest to the combined pressure unit. Specifically, each massage pressure block 71c has a triangular block-like structure and is fixedly connected to the frustum-shaped guide post 71a.

[0045] In this way, when medical staff push the first piston rod 2 into the drug delivery cylinder 3, the rack 5 moves in the same direction as the first piston rod 2. The rack 5 drives the first transmission gear to rotate. The first transmission gear drives the second helical gear 71d to rotate synchronously through the second transmission gear, the third transmission gear and the first helical gear. The second helical gear 71d drives the frustum-shaped guide post 71a to rotate. The rotation of the frustum-shaped guide post 71a drives the combined pressurization unit to move.

[0046] The combined pressurization unit includes an application pressurization cylinder 72 and two massage pressurization cylinders 73.

[0047] The application pressure cylinder 72 is fixedly installed inside the drug delivery tube 1; specifically, the application pressure cylinder 72 is a cylindrical structure with an opening, and a piston block 72a is slidably installed inside the opening.

[0048] The piston block 72a is a cylindrical structure with a circular groove at its center. A sliding ball 72a-1, connecting to a guide groove 71b, is located on the inner wall of the circular groove. A guide strip is fixedly mounted on the outer surface of the piston block 72a. Correspondingly, a strip-shaped groove, slidably connected to the guide strip, is located on the inner side wall of the applicator pressure cylinder 72. This combined design of the guide strip and the strip-shaped groove prevents the piston block 72 from rotating with the pressure unit 71. When the frustum-shaped guide post 71a rotates, the inclined surface of the guide groove 71b on the frustum-shaped guide post 71a pushes the sliding ball 72a-1 to move. Due to the guide strip, the sliding ball 72a-1 drives the applicator pressure cylinder 72 in a linear reciprocating motion.

[0049] The front end of the pressure-applying cylinder 72 is connected to the movable cavity inside the side wall of the drug delivery tube 1 through two first vent pipes 72b, and a magnetic block 72d is slidably arranged in each movable cavity. The magnetic block 72d is used to magnetically connect with the metal ring 42. Specifically, the magnetic block 72d is a square block structure.

[0050] Two massage pressure cylinders 73 are symmetrically arranged on both sides of the application pressure cylinder 72. Specifically, each massage pressure cylinder 73 has a fan-shaped cylindrical structure, and a reset member 73a is fixedly installed inside each massage pressure cylinder 73. A second piston rod 73b is fixedly installed at the end of the reset member 73a away from the bottom surface of the opening of the massage pressure cylinder 73, and the bottom surface of each massage pressure cylinder 73 is connected to the interior of the massage application airbag 4 through a second vent pipe 73c; wherein, the end of the second piston rod 73b away from the reset member 73a is movably connected to the massage pressure block 71c. It should be noted that the structure of the reset member 73a is not limited in this embodiment of the invention. Preferably, the reset member 73a is a spring.

[0051] The second air pipe 73c is symmetrically and fixedly installed on both sides of the pressure cylinder 72. One end of the second air pipe 73c is connected to the bottom surface of the pressure cylinder 73, and the other end is connected to the inside of the massage airbag 4 after passing through the pressure cylinder 72c.

[0052] The working principle of the vaginal drug delivery positioning and pushing device provided in this embodiment of the invention is as follows: The medical staff pushes the first piston rod 2, pushing the drug in the inner drug delivery tube 3 to the outer drug delivery tube 1, and then it acts on the vaginal wall through the injection port of the outer drug delivery tube 1; As the first piston rod 2 moves, it drives the rack 5 to move in the same direction. The rack 5 drives the guide pressure unit 71 to rotate through the transmission gear set 6. Therefore, the inclined sidewall of the wave-shaped guide groove 71b on the surface of the guide pressure unit 71 pushes the piston block 72a to reciprocate inside the coating pressure cylinder 72. Meanwhile, the ends of the massage pressure blocks 71c on the guide pressure unit 71 sequentially press the two second piston rods 73b. Since the pressure blocks 71c have a triangular structure, when one of the pressure blocks 71c rotates, its bottom end presses the second piston rod 73b towards the pressure cylinder. After the pressure cylinder 73 is pressed inside, when the bottom end of the pressure block 71c leaves the second piston rod 73b, the pressure block 71c no longer presses the second piston rod 73b into the massage pressure cylinder 73. At this time, the reset member 73a returns to its natural state, thereby pushing the second piston rod 73b to move outward from the massage pressure cylinder 73. Then, as the next pressure block 71c rotates, its bottom end presses the second piston rod 73b into the massage pressure cylinder 73 again. This cycle repeats, causing the second piston rod 73b to reciprocate linearly inside the massage pressure cylinder 73. During the reciprocating linear motion of the two second piston rods 73b, the air pressure inside the massage pressure cylinder 73 changes continuously, thereby alternately inflating and deflating the massage applicator airbag 4 to achieve massage of the vaginal wall; Simultaneously, during the reciprocating linear motion of the piston block 72a, the internal air pressure of the applicator 72 continuously changes. Since the applicator 72 is connected to the movable cavity located inside the side wall of the drug delivery tube 1 through the first vent pipe 72b, the continuous change in internal air pressure of the applicator 72 drives the magnetic block 72d located in the movable cavity to move synchronously. Under the magnetic attraction force, the magnetic block 72d drives the massage applicator 4 to reciprocate, thereby achieving the uniform application of the drug to the vaginal wall. In other words, the massage applicator 4 simultaneously performs massage and uniform drug application operations.

[0053] During the reciprocating linear motion of the piston block 72a, the pull rod 72c moves synchronously, and the pull rod 72c drives the corresponding second vent tube 73c to move synchronously, so that the second vent tube 73c alternately inflates and deflates the massage-type applicator airbag 4.

[0054] Example 2 Based on Embodiment 1, but unlike Embodiment 1, the vaginal drug delivery positioning and pushing device provided in this embodiment of the invention further includes an angle adjustment mechanism 8.

[0055] The angle adjustment mechanism 8 includes an angle adjustment seat 81, a rotating ring 82, a first retaining ring 83, a second retaining ring 84, two locking buttons 85, and two return springs 86.

[0056] Angle adjustment seat 81 is fixedly installed below the drug delivery tube 1. Specifically, angle adjustment seat 81 includes a square base and two square strip-shaped mounting rods fixedly installed on the square base. Each mounting rod has a sliding hole at its upper end.

[0057] Two locking buttons 85 are slidably disposed in the sliding holes of the corresponding mounting rods, and T-shaped mounting posts are fixedly disposed on opposite sides of the two locking buttons 85.

[0058] The rotating ring 82 is a circular ring structure and is sleeved with the drug delivery tube 1; wherein, mounting cylinders 82a are symmetrically fixed at both ends of the rotating ring 82. In practical applications, the position of the drug delivery tube 1 can be fixed by the friction between the rotating ring 82 and the side of the drug delivery tube 1 to prevent the drug delivery tube 1 from sliding.

[0059] Two return springs 86 are fixedly installed in the corresponding mounting cylinders 82a. One end of each return spring 86 is fixedly connected to the inner bottom surface of the mounting cylinder 82a, and the other end is located inside the mounting cylinder 82a.

[0060] Two first retaining rings 83 are respectively fixedly installed at the ends of the corresponding mounting cylinders 82a. Each first retaining ring 83 has multiple retaining teeth on the side near the return spring 86. These multiple retaining teeth are used to engage with the corresponding second retaining ring 84.

[0061] The second retaining ring 84 is located between the first retaining ring 83 and the return spring 86, and one side of the second retaining ring 84 abuts against the return spring 86; specifically, the second retaining ring 84 has the same structure as the first retaining ring 83, and the side of the second retaining ring 84 is fixedly provided with retaining teeth for engaging with the first retaining ring 83.

[0062] Two locking buttons 85 are slidably disposed inside the side of the angle adjustment seat 81. Specifically, the locking buttons 85 are circular block structures. Each locking button 85 has a mounting post fixedly disposed on one side. The end of the mounting post away from the locking button 85 passes through the first retaining ring 83 and is fixedly connected to the second retaining ring 84.

[0063] In actual use, medical staff use two fingers of one hand to press the two locking buttons 85 into the angle adjustment seat 81. The two second retaining rings 84 move synchronously with the two locking buttons 85. At this time, the two second retaining rings 84 separate from the corresponding first retaining rings 83. At this time, the two return springs 86 are in a compressed state. Then, the medical staff uses the other hand to hold the rotating ring 82 and adjust the tilt angle of the drug delivery tube 1. After the adjustment is completed, the two locking buttons 85 are released. During this process, the two return springs 86 gradually return to their natural state, so that the two second retaining rings 84 move synchronously with the two locking buttons 85 back to their initial positions and engage with the first retaining rings 83 again, thereby fixing the tilt angle of the rotating ring 82 and thus fixing the tilt angle of the drug delivery tube 1.

[0064] Example 3 Based on Embodiment 1, unlike Embodiments 1 and 2, the vaginal drug delivery positioning and pushing device provided in this embodiment of the invention also includes a positioning ring 9. Medical personnel can adjust the position of the positioning ring 9 to limit the length of the drug delivery tube 1 inserted into the patient's body, preventing the drug delivery tube from being inserted too much or too little.

[0065] Specifically, the positioning ring 9 is a circular ring structure with a threaded hole on its side. A locking screw 91 is threaded into the threaded hole, and the locking screw 91 is connected to the threaded hole on the positioning ring 9. An abutment block is fixedly installed on the end of the locking screw 91 near the drug delivery tube 1. Thus, when medical personnel rotate the locking screw 91, the abutment block on the locking screw 91 abuts against the side of the drug delivery tube 1. Under the action of friction between the abutment block and the drug delivery tube 1, the position of the positioning ring 9 is fixed. When the locking screw 91 is rotated in the opposite direction, the locking screw 91 moves away from the side of the drug delivery tube 1 until it no longer abuts against the side of the drug delivery tube 1. At this point, the positioning ring 9 can slide on the drug delivery tube 1, allowing medical personnel to adjust the position of the positioning ring 9, thereby limiting the length of the drug delivery tube 1 inserted into the patient's body.

[0066] To allow for more precise adjustment of the position of the positioning ring 9, scale lines are provided on the side of the drug delivery tube 1, enabling medical staff to make quick and accurate adjustments.

[0067] It should be noted that the abutment block provided in the embodiments of the present invention is made of a material with high surface friction. Preferably, the abutment block is made of medical rubber or silicone.

[0068] Application examples: Taking the administration of medication to the patient's genitals as an example, the use of the device provided by the present invention includes the following steps: S1: Wash your hands and vulva with mild soap to avoid introducing bacteria into the vagina; S2: Patient in supine position; S3: Place the entire device on the hospital bed; S4: Adjust the tilt angle and insertion depth of the drug delivery tube 1; Specifically, the medical staff uses two fingers of one hand to press the two locking buttons 85 into the angle adjustment seat 81, causing the two second retaining rings 84 to separate from their corresponding first retaining rings 83. At this time, the two return springs 86 are in a compressed state. Then, the medical staff uses the other hand to hold the rotating ring 82 and adjust the tilt angle of the drug delivery tube 1. After the adjustment is completed, the two locking buttons 85 are released, and the two return springs 86 gradually return to their natural state. This causes the two second retaining rings 84 to move back to their initial positions synchronously with the two locking buttons 85 and engage with the first retaining rings 83 again, thus fixing the tilt angle of the rotating ring 82. At this time, the tilt angle of the drug delivery tube 1 is adjusted. S5: Adjust the insertion depth of the drug delivery tube 1; Specifically, medical staff rotate the locking screw 91 in the opposite direction, so that the locking screw 91 is away from the side of the drug delivery tube 1, so as to move the positioning ring 9. After the position of the positioning ring 9 is adjusted, when the locking screw 91 is rotated, the abutment block on the locking screw 91 abuts against the side of the drug delivery tube 1. Under the action of friction between the abutment block and the drug delivery tube 1, the position of the positioning ring 9 is fixed. At this time, the insertion depth of the drug delivery tube 1 is adjusted. S6: Insert the injection end of the external drug delivery tube 1 into the patient's vagina; S7: Injection of medication; Specifically, medical staff push the first piston rod 2 to push the drug in the inner drug delivery tube 3 to the outer drug delivery tube 1, and then it acts on the vaginal wall through the injection port of the outer drug delivery tube 1; While the first piston rod 2 moves, it drives the rack 5 to move in the same direction. The rack 5 drives the guide pressure unit 71 to rotate through the transmission gear set 6. The inclined side wall of the guide groove 71b on the surface of the guide pressure unit 71 pushes the piston block 72a to move back and forth inside the coating pressure cylinder 72. The massage pressure block 71c on the guide pressure unit 71 presses the two second piston rods 73b in turn, so that the two second piston rods 73b move into the corresponding massage pressure cylinder 73 respectively. Then, the second piston rods 73b return to the initial position under the action of the reset member 73a, so that the second piston rods 73b reciprocate linearly. During the reciprocating linear motion of the two second piston rods 73b, the air pressure inside the massage pressure cylinder 73 changes continuously, thereby alternately inflating and deflating the massage applicator airbag 4 to achieve massage of the vaginal wall; Simultaneously, during the reciprocating linear motion of the piston block 72a, the internal air pressure of the applicator 72 continuously changes. Since the applicator 72 is connected to the movable cavity located inside the side wall of the drug delivery tube 1 through the first vent pipe 72b, the continuous change in internal air pressure of the applicator 72 drives the magnetic block 72d located in the movable cavity to move synchronously. Under the magnetic attraction force, the magnetic block 72d drives the massage applicator 4 to reciprocate, thereby achieving the uniform application of the drug to the vaginal wall. In other words, the massage applicator 4 simultaneously performs massage and uniform drug application operations.

[0069] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

Claims

1. A precise and controllable vaginal drug delivery and positioning device, comprising an external drug delivery tube (1) and a first piston rod (2), characterized in that, Also includes: The inner tube (3) is disposed inside the outer tube (1) and is connected to the first piston rod (2); Massage-type applicator (4) is slidably fitted onto the drug delivery tube (1); The drive mechanism is located at the end of the drug delivery tube (3) away from the first piston rod (2) and is connected to the first piston rod (2) and the massage-type applicator (4) respectively.

2. The precise and controllable vaginal drug delivery device according to claim 1, characterized in that, The drive mechanism includes: The rack (5) is connected at one end to the operating end of the first piston rod (2) and at the other end to the inner wall of the drug delivery tube (1); The transmission gear set (6) is rotatably mounted on the inner wall of the drug delivery tube (1), and its upper end is meshed with the rack (5); The pressurization component (7) is connected at one end to both the transmission gear set (6) and the drug delivery inner tube (3), and at the other end it extends out of the drug delivery outer tube (1) and is connected to the massage-type applicator (4).

3. The precise and controllable vaginal drug delivery device according to claim 2, characterized in that, The pressurization assembly (7) includes: The guide pressurization unit (71) has a second helical gear (71d) at one end, which meshes with the transmission gear set (6), and the guide pressurization unit (71) is connected to the drug delivery tube (3) through the connecting frame (74); The combined pressurization unit is set on the inner wall of the drug delivery tube (1), with one end connected to the other end of the guide pressurization unit (71) and the other end connected to both the drug delivery tube (1) and the massage applicator (4).

4. The precise and controllable vaginal drug delivery device according to claim 3, characterized in that, The combined pressurization unit includes: The applicator pressurizing cylinder (72) has a piston block (72a) inside, which is connected to the guide pressurizing unit (71). The applicator pressurizing cylinder (72) is connected to the side wall of the drug delivery tube (1) through the first vent tube (72b) to drive the massage applicator airbag (4) to move axially. Two massage pressure cylinders (73) are symmetrically arranged on both sides of the application pressure cylinder (72), and each massage pressure cylinder (73) is connected to the massage application airbag (4) through the second air pipe (73c) to drive the massage application airbag (4) to expand radially.

5. The precise and controllable vaginal drug delivery device according to claim 4, characterized in that, The massage pressure cylinder (73) is provided with a reset element (73a) and a second piston rod (73b). One end of the reset member (73a) is connected to the corresponding massage pressure cylinder (73), and the other end is connected to the second piston rod (73b). The end of the second piston rod (73b) away from the reset member (73a) is movably connected to the guide pressure unit (71).

6. The precise and controllable vaginal drug delivery and positioning device according to claim 4, characterized in that, The piston block (72a) is also symmetrically provided with pull rods (72c) on both sides, and the pull rods (72c) abut against the corresponding second vent pipe (73c).

7. The precise and controllable vaginal drug delivery and positioning device according to claim 4, characterized in that, The guiding pressurization unit (71) includes: The frustum-shaped guide post (71a) has a guide groove (71b) on its side wall. The guide groove (71b) is used to connect with the piston block (72a), and the side near the drug delivery tube (3) is connected to the transmission gear set (6) through the second helical gear (71d). Multiple massage pressure blocks (71c) are arranged circumferentially on a frustum-shaped guide post (71a) and are movably connected to each second piston rod (73a).

8. The precise and controllable vaginal drug delivery and positioning device according to claim 1, characterized in that, The massage-type applicator airbag (4) includes an airbag ring (41) and a metal ring (42) disposed inside the airbag ring (41).

9. The precise and controllable vaginal drug delivery and positioning device according to claim 4, characterized in that, The side wall of the drug delivery tube (1) is provided with an inflation chamber for communicating with the first ventilation tube (72b), and a magnetic block (72d) is interactively arranged in the inflation chamber. The magnetic block (72d) is magnetically connected to the metal ring (42).

10. The precise and controllable vaginal drug delivery and positioning device according to claim 1, characterized in that, It also includes an angle adjustment mechanism (8), which includes: Angle adjustment seat (81); The rotating ring (82) is sleeved with the drug delivery tube (1), and the two ends are provided with first retaining rings (83). The locking button (85) is slidably set on the angle adjustment seat (81) and has a second retaining ring (84) at its end, which engages with the retaining ring (83).

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