Drug delivery device for obstetrics and gynecology department

Abstract

The utility model discloses a gynaecology and obstetrics dosing device which comprises a piston, a core rod, a tube body and a dosing tube connected with the tube body in an inserted mode, one end of the dosing tube is a closed end, a plurality of medicine outlet holes are formed in the tube wall of the closed end, a partition sleeve is arranged in the dosing tube, and the partition sleeve and the dosing tube are coaxially arranged. A gap exists between the outer wall of the partition sleeve and the tube wall of the dosing tube, one end of the partition sleeve is connected with the inner side of the tube wall of the dosing tube through a connecting part, the other end of the partition sleeve extends towards the closed end, and the multiple medicine outlet holes are evenly formed between the closed end and the connecting part at intervals; and during administration, the outer wall of the tube body is sequentially propped against the connecting part and the inner wall of the partition sleeve. By arranging the partition sleeve, medicine flows through the inner wall of the closed end to be buffered, then flows into the gap between the partition sleeve and the medicine feeding pipe and then flows out of the medicine outlet hole in the medicine feeding process, the medicine pushing-out speed can be effectively reduced, and therefore stimulation to the vagina of a woman is reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical auxiliary device technology, and in particular to a gynecological and obstetric drug delivery device. Background Technology

[0002] Common gynecological diseases include vaginitis, cervicitis, cervical erosion, and endometritis. Vaginitis, cervicitis, and cervical erosion, in particular, have a high incidence rate. Patients often experience unbearable itching or foul odor, and are prone to infection, recurrence, and bleeding, causing significant suffering. In particular, patients with severe cervicitis and uterine ulcers, if left untreated, are at risk of developing malignant diseases such as cervical cancer.

[0003] Currently, the common treatment for cervicitis and vaginitis involves inserting suppositories or capsules into the affected area of ​​the vagina. During insertion, a speculum is often used to dilate the vagina before using an applicator or finger to push the medication inside. This method of intravaginal administration has several disadvantages. Firstly, the patient's fingers can easily introduce bacteria or fungi into the vagina, which can also be carried out with the fingers, leading to secondary and cross-infections. Secondly, fingers cannot accurately deliver the medication to the affected area; if inserted too superficially, the medication may dislodge, affecting treatment. Furthermore, the rough skin, sharp nails, and vaginal dryness of the fingers can cause varying degrees of pain during insertion. Additionally, the speculum requires lighting to accurately target the medication to the affected area, making the procedure inconvenient.

[0004] In view of the above-mentioned technical problems, existing technologies, such as the gynecological drug delivery device disclosed in patent application CN201120113224.5, include a piston, a core rod, a tube body, and a drug delivery tube inserted into the tube body. One end of the drug delivery tube is closed, and multiple dispensing holes are provided on the tube wall at the closed end. The above technical solution has a simple structure, is easy and time-saving to operate when administering gynecological drugs to patients, reduces the workload of medical personnel, and ensures even drug delivery to the affected area.

[0005] However, the above-mentioned technical solutions still have shortcomings. When using existing drug delivery devices, the tube generally needs to be pushed deep into the woman's vagina so that the drug can effectively reach the area around the affected site after administration. However, it is not easy for the average person to control the speed at which the plunger is pushed, which can easily cause the drug to be pushed out too quickly, irritating the woman's vagina and causing many inconveniences. Utility Model Content

[0006] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a gynecological drug delivery device that can reduce the rate of drug delivery, thereby reducing stimulation to the female vagina.

[0007] A gynecological drug delivery device according to a first aspect of the present invention includes a piston, a core rod, a tube body, and a drug delivery tube inserted into the tube body. One end of the drug delivery tube is a closed end, and a plurality of drug outlet holes are provided on the tube wall of the closed end. A partition sleeve is provided inside the drug delivery tube. The partition sleeve is coaxially arranged with the drug delivery tube, and there is a gap between the outer wall of the partition sleeve and the tube wall of the drug delivery tube. One end of the partition sleeve is connected to the inner side of the tube wall of the drug delivery tube through a connecting part, and the other end of the partition sleeve extends toward the closed end. The plurality of drug outlet holes are evenly spaced between the closed end and the connecting part. When drug is administered, the outer wall of the tube body abuts against the connecting part and the inner wall of the partition sleeve in sequence.

[0008] According to an embodiment of the present invention, a gynecological drug delivery device has at least the following beneficial effects: by setting a partition sleeve, the drug flows through the inner wall of the closed end for buffering during the drug delivery process, then flows into the gap between the partition sleeve and the drug delivery tube, and then flows out from the drug outlet. This effectively reduces the speed at which the drug is pushed out, thereby reducing the stimulation to the female vagina.

[0009] According to some embodiments of the present invention, the diameter of the partition sleeve gradually decreases from the closed end away from the administration tube towards the closed end of the administration tube.

[0010] According to some embodiments of the present invention, the dispensing hole is inclined, and the outlet end of the dispensing hole is closer to the closed end of the drug delivery tube than the inlet end of the dispensing hole.

[0011] According to some embodiments of the present invention, a flow guide is also connected to the inner sidewall of the closed end.

[0012] According to some embodiments of the present invention, the flow guiding part includes a flow guiding cone and a flow guiding groove. The flow guiding groove is connected to the inner sidewall of the end of the closed end. The recessed part of the flow guiding groove faces the partition sleeve. The flow guiding cone is connected to the central axis of the flow guiding groove.

[0013] According to some embodiments of the present invention, the drug delivery tube, the partition sleeve, and the connecting part are integrally formed.

[0014] According to some embodiments of this utility model, the drug delivery tube, the partition sleeve, and the connecting part are all made of silicone.

[0015] According to some embodiments of the present invention, the tube body is open at both ends, the end of the tube body near the closed end is the push-out end, and the other end of the tube body is the push-in end, the diameter of the push-out end is smaller than the diameter of the push-in end.

[0016] According to some embodiments of the present invention, the piston is connected to one end of the core rod and sealed within the tube, the other end of the core rod extends from the push-in end, and the space between the piston and the push-out end is a drug storage chamber for storing drugs.

[0017] According to some embodiments of the present invention, the dimension of the side of the piston facing the ejection end is the same as the internal dimension of the ejection end.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of the drug delivery tube of an obstetric and gynecological drug delivery device according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the drug delivery tube of an obstetric and gynecological drug delivery device according to another embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the assembly structure of the piston, core rod, and tube of an obstetric and gynecological drug delivery device according to an embodiment of the present invention.

[0023] 110 Piston; 120 Core rod; 200 Tube body; 210 Push-out end; 220 Push-in end; 230 Drug storage chamber; 300 Drug delivery tube; 310 Closed end; 320 Drug outlet; 321 Outlet; 322 Inlet; 330 Partition sleeve; 340 Connecting part; 351 Guide cone; 352 Guide groove. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0025] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] refer to Figures 1 to 3 As shown, an obstetric and gynecological drug delivery device according to an embodiment of the present invention has a structural design that fully considers the buffering and restriction principles in the drug flow process, aiming to optimize the drug delivery process, improve the therapeutic effect and enhance patient comfort.

[0029] refer to Figure 1 As shown, an obstetric and gynecological drug delivery device according to an embodiment of the present invention includes a piston 110, a core rod 120, a tube body 200, and a drug delivery tube 300 inserted into the tube body 200. One end of the drug delivery tube 300 is a closed end 310, and multiple drug outlet holes 320 are provided on the tube wall of the closed end 310 for drug release. A partition sleeve 330 is provided inside the drug delivery tube 300, and the partition sleeve 330 is coaxially arranged with the drug delivery tube 300. The outer wall of the partition sleeve 330 is parallel to the outer wall of the tube. There are gaps between the walls of the administration tube 300 to allow for buffered drug flow; one end of the partition sleeve 330 is connected to the inner wall of the administration tube 300 via the connecting part 340, and the other end of the partition sleeve 330 extends toward the closed end 310; a plurality of drug outlet holes 320 are evenly spaced between the closed end 310 and the connecting part 340; when administering the drug, the outer wall of the tube body 200 abuts against the connecting part 340 and the inner wall of the partition sleeve 330 in sequence.

[0030] Understandably, during the procedure, medical personnel first load an appropriate amount of medication into the tube body 200, forming a medication reservoir. The piston 110 is tightly connected to the core rod 120 and sealed within the tube body 200 to ensure no medication leakage. The administration tube 300 is tightly inserted into the extension end 210 of the tube body 200 through its open end, ensuring the integrity of the administration system. Next, the closed end 310 of the administration tube 300 is gently inserted into the patient's vagina until the predetermined administration position is reached. At this point, the dispensing port 320 of the administration tube 300 faces the vaginal wall or the area requiring treatment; then, the core rod 120 is pushed, causing the piston 110 to move forward within the tube body 200. Because the diameter of the push-out end 210 of the tube 200 is smaller than that of the push-in end 220, the drug experiences some resistance during the push-out process, thus controlling the speed of drug delivery. When the drug is pushed into the administration tube 300, it first enters the gap between the septum sleeve 330 and the administration tube 300. This gap acts as a buffer, allowing the drug to flow smoothly and reducing the impact caused by rapid delivery. Finally, as the drug continues to be pushed, it gradually fills the gap between the septum sleeve 330 and the administration tube 300, and is eventually evenly released into the vagina through the dispensing hole 320. Because the dispensing holes 320 are evenly spaced between the closed end 310 and the connecting part 340, the drug can be evenly distributed on the vaginal wall, ensuring the uniformity of the therapeutic effect.

[0031] refer to Figure 3 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: the tube body 200 is open at both ends, the end of the tube body 200 near the closed end 310 is the push-out end 210, and the other end of the tube body 200 is the push-in end 220, the diameter of the push-out end 210 is smaller than the diameter of the push-in end 220.

[0032] Understandably, the smaller diameter of the ejection end 210 compared to the inlet end 220 limits the outflow velocity, ensuring a stable flow of the drug during ejection and preventing splashing or unnecessary waste due to excessive flow rate. It also allows the drug to be accurately delivered to the target area, improving treatment efficiency.

[0033] refer to Figure 3 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: one end of the piston 110 is connected and sealed to the core rod 120 inside the tube body 200, the other end of the core rod 120 extends out from the push-in end 220, and the space between the piston 110 and the push-out end 210 is a drug storage chamber 230 for storing drugs.

[0034] In some specific embodiments of this utility model, it may also have the following additional technical features: the dimension of the side of the piston 110 facing the ejection end 210 is the same as the internal dimension of the ejection end 210.

[0035] Understandably, by setting the partition sleeve 330, the drug first flows through the inner wall of the closed end 310 for buffering during the drug administration process, and then flows into the gap between the partition sleeve 330 and the drug administration tube 300 before flowing out from the drug outlet 320. This will effectively reduce the speed at which the drug is pushed out, thereby reducing the stimulation to the female vagina.

[0036] refer to Figure 2 As shown, in some specific embodiments of this utility model, it may also have the following additional technical features: the diameter of the partition sleeve 330 gradually decreases from the closed end 310 away from the administration tube 300 towards the closed end 310 closer to the administration tube 300. The direction from the closed end 310 away from the administration tube 300 towards the closed end 310 closer to the administration tube 300 is the administration direction, which is also the direction of movement of the tube body 200 during administration. The direction of movement during reset after administration is opposite to the administration direction. Through this design, a noticeable jerking sensation is generated during the process of the tube body 200 first contacting the connecting part 340 and then continuously contacting the partition sleeve 330, thus forming a noticeable change in feel, which can provide clear instructions to the user. Medical personnel or manufacturers can also formulate corresponding operating procedures based on these positional changes, thereby further standardizing and simplifying the usage process. At the same time, during administration, when the squeezing speed is too fast for a short time, causing a large amount of drug to accumulate in the partition sleeve 330 and fail to enter the gap between the partition sleeve 330 and the administration tube 300 in time, the pressure generated by the drug will cause the partition sleeve 330 to become congested. The enlarged diameter of the sleeve 330 brings it closer to the inner wall of the administration tube 300, thereby reducing the gap between the partition sleeve 330 and the administration tube 300. This reduces the outflow rate of the drug. After the drug is no longer squeezed, the drug in the partition sleeve 330 slowly flows out through the drug outlet 320. Then the partition sleeve 330 resets, and the gap between the partition sleeve 330 and the administration tube 300 resets, gradually restoring the original drug outflow rate. Overall, this has a flow regulation effect. At the same time, it also produces a clear tactile feedback, allowing the user to clearly feel the resistance and thus slow down the action of pushing the drug.

[0037] In some specific embodiments of this utility model, it may also have the following additional technical features: the drug outlet 320 is inclined, and the outlet 321 end of the drug outlet 320 is closer to the closed end 310 of the drug delivery tube 300 than the inlet 322 end of the drug outlet 320. This design allows the drug to flow horizontally in the drug outlet 320 in the opposite direction to the drug flow in the gap between the partition sleeve 330 and the drug delivery tube 300, and to flow directly out in the same direction as the drug flow in the gap between the partition sleeve 330 and the drug delivery tube 300. This design effectively slows down the outflow rate of the drug from the drug outlet 320.

[0038] Understandably, when the piston 110 is pushed by the core rod 120, the drug enters the administration tube 300 from the tube body 200 through the ejector end and fills the gap between the partition sleeve 330 and the administration tube 300. At this time, the drug flows forward along the axial direction of the administration tube 300, gradually approaching the outlet 320. As the drug continues to advance, it begins to enter the inclined outlet 320. Since the inlet 322 end of the outlet 320 is relatively far from the closed end 310, the drug first contacts and flows into the inlet 322 end. As the drug flows inside the outlet 320, its flow direction changes due to the inclined design of the outlet 320. The drug that originally flowed along the axial direction of the administration tube 300 is now forced to flow along the inclined direction of the outlet 320, that is, towards the closed end 310. Finally, the drug flows out through the outlet 321 end of the outlet 320 and is evenly distributed on the vaginal wall. Because the outlet 321 is closer to the closed end 310, the drug undergoes a longer flow path and more directional changes before flowing out, effectively slowing down the outflow rate of the drug.

[0039] In some specific embodiments of this utility model, it may also have the following additional technical features: a flow guide is also connected to the inner sidewall of the closed end 310.

[0040] In some specific embodiments of this utility model, it may also have the following additional technical features: the guiding part includes a guiding cone 351 and a guiding groove 352. The guiding groove 352 is connected to the inner sidewall of the end of the closed end 310, and the recessed portion of the guiding groove 352 faces the partition sleeve 330. The guiding cone 351 is connected to the central axis of the guiding groove 352. The guiding cone 351 and the guiding groove 352 ensure that the liquid medicine can smoothly enter the gap between the partition sleeve 330 and the drug delivery tube 300.

[0041] Understandably, when the piston 110 is pushed by the core rod 120, the liquid medicine begins to flow out from the outlet end of the tube 200 and moves forward along the axial direction of the administration tube 300. As the liquid medicine continues to advance, it first contacts the guide section. Specifically, the liquid medicine first flows into the guide groove 352, which is connected to a recessed portion on the inner sidewall of the closed end 310, with its recess facing towards the partition sleeve 330. The guide groove 352 allows the liquid medicine to flow smoothly along its recessed portion towards the partition sleeve 330. At the same time, the guide cone 351 located on the central axis of the guide groove 352 further guides the liquid medicine, ensuring that it can accurately enter the gap between the partition sleeve 330 and the administration tube 300. After the liquid medicine enters the gap, a buffer area is formed between the partition sleeve 330 and the administration tube 300. This area allows the liquid medicine to flow smoothly and gradually fill the entire gap. As the medication continues to flow in, it is eventually released evenly into the vagina through the tilted dispensing port 320.

[0042] In some specific embodiments of this utility model, it may also have the following additional technical features: the administration tube 300, the partition sleeve 330 and the connecting part 340 are integrally formed.

[0043] In some specific embodiments of this utility model, it may also have the following additional technical features: the administration tube 300, the septum sleeve 330, and the connecting part 340 are all made of silicone. In order to further reduce the stimulation of the vagina by the administration tube 300, the outer wall of the closed end 310 of the administration tube 300 is made of a spherical structure, so as to facilitate the insertion of the administration tube 300 into the vagina.

[0044] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A gynecological administration device comprising a piston (110), a core rod (120), a tube body (200) and an administration tube (300) inserted into the tube body (200), one end of the administration tube (300) being a closed end (310), and a plurality of medicine outlet holes (320) being provided on the tube wall of the closed end (310), characterized in that, The administration pipe (300) is provided with a partition sleeve (330), the partition sleeve (330) is coaxially arranged with the administration pipe (300), there is a gap between the outer wall of the partition sleeve (330) and the pipe wall of the administration pipe (300), one end of the partition sleeve (330) is connected with the inner side of the pipe wall of the administration pipe (300) through a connecting part (340), the other end of the partition sleeve (330) extends towards the closed end (310), and a plurality of medicine outlet holes (320) are uniformly arranged between the closed end (310) and the connecting part (340); when administration is performed, the outer wall of the pipe body (200) abuts against the connecting part (340) and the inner wall of the partition sleeve (330) in sequence.

2. The gynecological administration device according to claim 1, wherein The caliber of the partition sleeve (330) gradually decreases from the direction away from the closed end (310) of the administration pipe (300) to the direction close to the closed end (310) of the administration pipe (300).

3. The gynecological administration device according to claim 1, wherein The medicine outlet hole (320) is arranged obliquely, and the outlet (321) end of the medicine outlet hole (320) is closer to the closed end (310) of the administration pipe (300) than the inlet (322) end of the medicine outlet hole (320).

4. The gynecological administration device according to claim 1, wherein The end inner side wall of the closed end (310) is further connected with a flow guide part.

5. The gynecological administration device according to claim 4, wherein The flow guide part comprises a flow guide cone (351) and a flow guide groove (352), the flow guide groove (352) is connected to the end inner side wall of the closed end (310), the recessed part of the flow guide groove (352) faces the partition sleeve (330), and the flow guide cone (351) is connected to the central axis of the flow guide groove (352).

6. The gynecological administration device according to claim 1, wherein The administration pipe (300), the partition sleeve (330) and the connecting part (340) are integrally formed.

7. A gynaecological administration device according to claim 6, wherein The administration pipe (300), the partition sleeve (330) and the connecting part (340) are all made of silica gel material.

8. The gynecological administration device according to claim 1, wherein The pipe body (200) is open at both ends, one end of the pipe body (200) close to the closed end (310) is a push-out end (210), the other end of the pipe body (200) is a push-in end (220), and the caliber of the push-out end (210) is smaller than the caliber of the push-in end (220).

9. A gynaecological administration device according to claim 8, wherein The piston (110) is connected and sealingly connected to the pipe body (200) at one end of the core rod (120), the other end of the core rod (120) extends out of the push-in end (220), and the piston (110) and the push-out end (210) are connected through a medicine storage compartment (230) for storing medicine.

10. The gynecological administration device according to claim 9, wherein The size of the side of the piston (110) towards the push-out end (210) is the same as the internal size of the push-out end (210).

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