Novel dosing device
The two-stage push rod mechanism design solves the problem of drug residue in existing drug delivery devices, achieving complete drug delivery and reducing waste, while maintaining the simplicity and ease of use of the drug delivery device.
Patent Information
- Application Number
- CN202423141708.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-17
AI Technical Summary
Existing drug delivery devices often leave drug residue inside the upper tube after use, leading to drug waste and incomplete dispensing.
A two-stage push rod mechanism is adopted, including a first push rod and a second push rod. Through the design of threaded sleeve and sliding groove, the drug is pushed in two stages to ensure that the drug is completely discharged.
To avoid medication accumulation in the delivery tube and reduce waste, while maintaining the simplicity and ease of use of the delivery device, and ensuring complete dispensing of the medication.
Smart Images
Figure CN223831585U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical supplies technology, and in particular to a novel drug delivery device. Background Technology
[0002] Among gynecological diseases, vaginitis and cervicitis have a high incidence rate, as do other gynecological inflammations. These often require the use of medication applicators to administer medication into the vagina. Most medication applicators currently consist of a medication tube, a piston, and a push rod. However, although this type of applicator can push the medication deep into the vagina, medication residue remains in the medication tube after use, making it impossible to push the applicator out completely and resulting in waste of medication.
[0003] To address this issue, this utility model proposes a novel drug delivery device. Utility Model Content
[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.
[0005] Therefore, one objective of this utility model is to propose a novel drug delivery device to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.
[0006] To achieve the above objectives, one embodiment of the present invention provides a novel drug delivery device, including a drug delivery tube, wherein a push rod mechanism is slidably connected inside the drug delivery tube, and a drug feeding tube is sleeved on one side of the drug delivery tube;
[0007] The push rod mechanism includes a first push rod, a first rubber plug is engaged on one side of the first push rod, a threaded sleeve is rotatably connected inside the push rod, a second push rod is threadedly connected inside the threaded sleeve, and a second rubber plug is engaged on one side of the second push rod.
[0008] Preferably, in any of the above solutions, a sliding hole is provided inside the first push rod, the shape and size of which are adapted to the shape and size of the second push rod, and the interior of the sliding hole is slidably connected to the outer surface of the second push rod.
[0009] The technical effect achieved by adopting the above solution is to position the second push rod and prevent it from rotating.
[0010] Preferably, in any of the above embodiments, the outer surface of the first push rod has two sliding grooves, which are symmetrically distributed. The inside of the drug delivery tube is fixedly connected to two sliders, the shape and size of which are adapted to the shape and size of the sliding grooves, and the inside of the sliding grooves is slidably connected to the outer surface of the sliders.
[0011] The technical effect achieved by adopting the above scheme is to play a guiding role and prevent relative rotation between the first push rod and the drug delivery tube.
[0012] Preferably, in any of the above embodiments, a push plate is fixedly connected to the top of the threaded sleeve, and a rotating block is fixedly connected to one side of the push plate. The shape and size of the rotating block are adapted to the shape and size of the first push rod, and the outer surface of the rotating block is rotatably connected to the inside of the first push rod.
[0013] Preferably, in any of the above solutions, a locking block is fixedly connected inside the first push rod, and an annular groove is provided on the outside of the rotating block. The shape and size of the locking block are adapted to the shape and size of the annular groove, and the outer surface of the locking block is slidably connected to the inside of the annular groove.
[0014] The technical effect achieved by adopting the above solution is to achieve a positioning effect and prevent the rotating block from falling out of the drug delivery tube.
[0015] Preferably, in any of the above solutions, a connecting block is fixedly installed on the top of the second push rod, and the external thread of the connecting block is adapted to the inside of the threaded sleeve. The external thread of the connecting block is connected to the inside of the threaded sleeve.
[0016] Preferably, in any of the above embodiments, the outer side of the first rubber stopper is slidably connected to the inside of the administration tube, a through hole is provided on one side of the first rubber stopper, the outer side of the second rubber stopper is adapted to the inside of the through hole, and the outer side of the second rubber stopper is slidably connected to the inside of the through hole.
[0017] Preferably, one side of the administration tube is fixedly connected to a dispensing tube, and one side of the administration tube is fixedly connected to a connecting sleeve. The size of the connecting sleeve is adapted to the size of the dispensing tube, and the inside of the connecting sleeve is fitted onto the outer surface of the dispensing tube.
[0018] Preferably, in any of the above schemes, the dispensing tube and the feeding tube are located at the same position as the through hole and have the same inner diameter, and the outside of the second rubber stopper is slidably connected to the inside of the dispensing tube and the feeding tube.
[0019] The technical effect achieved by adopting the above scheme is to facilitate the removal of excess medicine.
[0020] Preferably, one side of the outer surface of the drug delivery tube is provided with a plurality of drug application holes, and the plurality of drug application holes are evenly distributed in a circle.
[0021] The technical effect achieved by adopting the above scheme is that it can avoid drug accumulation and affect the application effect.
[0022] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:
[0023] The push rod mechanism in this invention, through the setting of the first push rod and the second push rod, can perform two-stage pushing. After the drug in the drug delivery tube is pushed out, the drug in the upper drug tube can be pushed out by the second push rod, so as to avoid the problem of drug accumulation in the upper drug tube and incomplete discharge, which would lead to drug waste. At the same time, it can maintain the size of the existing drug delivery device. The mechanism is simple, easy to use, and ensures the practicality of the device.
[0024] 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
[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0026] Figure 1 This is a schematic diagram of the structure according to an embodiment of the present utility model;
[0027] Figure 2 This is a cross-sectional structural diagram of the first state according to an embodiment of the present utility model;
[0028] Figure 3 This is a cross-sectional structural diagram of the second state according to an embodiment of the present invention;
[0029] Figure 4 This is a schematic diagram of the structure of the first push rod according to an embodiment of the present utility model;
[0030] Figure 5 This is a schematic diagram of the threaded sleeve according to an embodiment of the present utility model;
[0031] Figure 6 This is a schematic diagram of the structure of the second push rod according to an embodiment of the present utility model.
[0032] In the figure: 1-drug administration tube, 11-slider, 12-drug dispensing tube, 2-drug loading tube, 21-connecting sleeve, 22-drug application hole, 3-first push rod, 31-slide groove, 4-first rubber plug, 41-through hole, 5-threaded sleeve, 51-push plate, 52-rotating block, 6-second push rod, 61-connecting block, 7-second rubber plug. Detailed Implementation
[0033] Example: Figures 1 to 6 As shown, a novel drug delivery device includes a drug delivery tube 1, a push rod mechanism that is slidably connected inside the drug delivery tube 1, and a drug delivery tube 2 that is sleeved on one side of the drug delivery tube 1.
[0034] The push rod mechanism includes a first push rod 3, a first rubber plug 4 is snapped into one side of the first push rod 3, a threaded sleeve 5 is rotatably connected inside the push rod 3, a second push rod 6 is threadedly connected inside the threaded sleeve 5, a second rubber plug 7 is snapped into one side of the second push rod 6, and the threaded sleeve 5 and the second push rod 6 are both located inside the first push rod 3, which can effectively reduce its volume.
[0035] The first push rod 3 has a sliding hole inside, the shape and size of which are adapted to the shape and size of the second push rod 6. The inside of the sliding hole is slidably connected to the outer surface of the second push rod 6. The cooperation between the sliding hole and the second push rod 6 can conveniently guide the movement of the second push rod 6, prevent it from rotating, and thus prevent the second rubber stopper 7 from being pushed out of the first rubber stopper 4.
[0036] Two grooves 31 are formed on the outer surface of the first push rod 3. The two grooves 31 are symmetrically distributed. Two sliders 11 are fixedly connected inside the administration tube 1. The shape and size of the sliders 11 are adapted to the shape and size of the grooves 31. The inside of the grooves 31 is slidably connected to the outer surface of the sliders 11. The cooperation between the sliders 11 and the grooves 31 can prevent the first push rod 3 from rotating inside the administration tube 1 when the threaded sleeve 5 is rotated, thus avoiding affecting the movement of the first rubber stopper 4.
[0037] A push plate 51 is fixedly connected to the top of the threaded sleeve 5, and a rotating block 52 is fixedly connected to one side of the push plate 51. The shape and size of the rotating block 52 are adapted to the shape and size of the first push rod 3. The outer surface of the rotating block 52 is rotatably connected to the inside of the first push rod 3. The threaded sleeve 5 rotates inside the administration tube 1 through the rotating block 52. The cooperation of the locking block and the annular locking groove can limit the rotating block 52 and prevent the rotating block 52 from coming out of the administration tube 1 during use.
[0038] The first push rod 3 has a fixed internal connection with a locking block, and the rotating block 52 has an annular groove on its outside. The shape and size of the locking block are adapted to the shape and size of the annular groove, and the outer surface of the locking block is slidably connected to the inside of the annular groove.
[0039] A connecting block 61 is fixedly installed on the top of the second push rod 6. The outer side of the connecting block 61 is provided with an external thread that is compatible with the inside of the threaded sleeve 5. The external thread of the connecting block 61 is connected to the inside of the threaded sleeve 5. By rotating the push plate 51, the rotating block 52 and the threaded sleeve 5 are driven to rotate. Due to the limitation of the sliding hole on the second push rod 6 and the threaded connection between the connecting block 61 and the threaded sleeve 5, it moves up and down.
[0040] The outer side of the first rubber stopper 4 is slidably connected to the inside of the administration tube 1. A through hole 41 is provided on one side of the first rubber stopper 4. The outer side of the second rubber stopper 7 is adapted to the inside of the through hole 41. The outer side of the second rubber stopper 7 is slidably connected to the inside of the through hole 41. The second rubber stopper 7 can be stored inside the first rubber stopper 4 to avoid the second rubber stopper 7 entering the inside of the drug dispensing tube 12 before the first rubber stopper 4 touches the bottom when the first rubber stopper 4 is pushed, causing the drug to accumulate in the administration tube and resulting in waste.
[0041] A dispensing tube 12 is fixedly connected to one side of the administration tube 1 to facilitate the extraction of ointment. A connecting sleeve 21 is fixedly connected to one side of the administration tube 2. The size of the connecting sleeve 21 is adapted to the size of the dispensing tube 12. The inside of the connecting sleeve 21 is fitted onto the outer surface of the dispensing tube 12. This part is technically mature and will not be described in detail.
[0042] The dispensing tube 12 and the feeding tube 2 are located at the same position as the through hole 41 and have the same inner diameter. The second rubber stopper 7 is externally slidably connected to the inside of the dispensing tube 12 and the feeding tube 2.
[0043] Several application holes 22 are provided on one side of the outer surface of the medicine tube 2. The application holes 22 are evenly distributed in a circle. The ointment is discharged through the application holes 22, which can avoid the application of the medicine being too concentrated and affecting the application effect.
[0044] A novel drug delivery device, working principle as follows:
[0045] 1) When using, first remove the medicine tube 2, pull the push plate 51 to draw the ointment into the medicine tube 1 through the medicine dispensing tube 12, and then put the medicine tube 2 back on to carry out the medicine application.
[0046] 2) By pressing the push plate 51, the medicine in the administration tube 1 is pushed into the upper medicine tube 2 and finally discharged through the administration hole 22. When the first rubber stopper 4 touches the bottom, a certain amount of ointment is still left in the upper medicine tube 2. At this time, the push plate 51 is rotated.
[0047] 3) The push plate 51 will drive the threaded sleeve 5 to rotate. With the cooperation of the connecting block 61, the second push rod 6 extends out of the through hole 41 and enters the medicine taking tube 12 and the medicine feeding tube 2 in sequence, pushing out the remaining medicine inside.
[0048] Compared with the prior art, the present invention has the following advantages:
[0049] The push rod mechanism in this utility model, through the setting of the first push rod 3 and the second push rod 6, can perform two-stage pushing. After the drug in the drug delivery tube 1 is pushed out, the drug in the upper drug tube 2 can be pushed out through the second push rod 6, so as to avoid the drug accumulating in the upper drug tube 2 and not being able to be completely discharged, thus avoiding the problem of drug waste. At the same time, it can maintain the size of the existing drug delivery device. The mechanism is simple, easy to use, and ensures the practicality of the device.
Claims
1. A novel drug delivery device, characterized in that: It includes a drug delivery tube (1), and a push rod mechanism is slidably connected inside the drug delivery tube (1). A drug delivery tube (2) is sleeved on one side of the drug delivery tube (1). The push rod mechanism includes a first push rod (3), a first rubber plug (4) is engaged on one side of the first push rod (3), a threaded sleeve (5) is rotatably connected inside the push rod (3), a second push rod (6) is threaded inside the threaded sleeve (5), and a second rubber plug (7) is engaged on one side of the second push rod (6).
2. The novel drug delivery device according to claim 1, characterized in that: The first push rod (3) has a sliding hole inside, the shape and size of which are adapted to the shape and size of the second push rod (6), and the inside of the sliding hole is slidably connected to the outer surface of the second push rod (6).
3. A novel drug delivery device according to claim 2, characterized in that: The outer surface of the first push rod (3) has two grooves (31) and the two grooves (31) are symmetrically distributed. The inside of the drug delivery tube (1) is fixedly connected to two sliders (11). The shape and size of the sliders (11) are adapted to the shape and size of the grooves (31). The inside of the grooves (31) is slidably connected to the outer surface of the sliders (11).
4. A novel drug delivery device according to claim 3, characterized in that: A push plate (51) is fixedly connected to the top of the threaded sleeve (5), and a rotating block (52) is fixedly connected to one side of the push plate (51). The shape and size of the rotating block (52) are adapted to the shape and size of the first push rod (3), and the outer surface of the rotating block (52) is rotatably connected to the inside of the first push rod (3).
5. A novel drug delivery device according to claim 4, characterized in that: The first push rod (3) has a fixed internal connection to a locking block, and the rotating block (52) has an annular groove on its outside. The shape and size of the locking block are adapted to the shape and size of the annular groove, and the outer surface of the locking block is slidably connected to the inside of the annular groove.
6. A novel drug delivery device according to claim 5, characterized in that: A connecting block (61) is fixedly installed on the top of the second push rod (6). The connecting block (61) has an external thread that is adapted to the inside of the threaded sleeve (5). The external thread of the connecting block (61) is connected to the inside of the threaded sleeve (5).
7. A novel drug delivery device according to claim 6, characterized in that: The outside of the first rubber stopper (4) is slidably connected to the inside of the administration tube (1). A through hole (41) is provided on one side of the first rubber stopper (4). The outside of the second rubber stopper (7) is adapted to the inside of the through hole (41). The outside of the second rubber stopper (7) is slidably connected to the inside of the through hole (41).
8. A novel drug delivery device according to claim 7, characterized in that: A drug dispensing tube (12) is fixedly connected to one side of the drug dispensing tube (1), and a connecting sleeve (21) is fixedly connected to one side of the drug loading tube (2). The size of the connecting sleeve (21) is adapted to the size of the drug dispensing tube (12), and the inside of the connecting sleeve (21) is fitted onto the outer surface of the drug dispensing tube (12).
9. A novel drug delivery device according to claim 8, characterized in that: The medicine dispensing tube (12) and the medicine loading tube (2) are located at the same position as the through hole (41) and have the same inner diameter. The second rubber stopper (7) is slidably connected to the inside of the medicine dispensing tube (12) and the medicine loading tube (2).
10. A novel drug delivery device according to claim 9, characterized in that: The outer surface of the drug delivery tube (2) is provided with a plurality of drug application holes (22), and the plurality of drug application holes (22) are evenly distributed in a circle.