Drug sustained-release device

Abstract

The utility model relates to the technical field of medicine sustained release, and discloses a medicine sustained release device which comprises a fixing cylinder, a limiting cylinder used for assisting sliding is fixedly installed on the inner bottom wall of the fixing cylinder, the inner wall of the limiting cylinder is slidably connected with a limiting seat, the outer surface of the limiting cylinder is sleeved with a spring, and the limiting seat is connected with a spring. A motor is fixedly installed at the end of the limiting base, the output end of the motor is connected with a fixing shaft through a key, the surface of the fixing shaft is sleeved with a plurality of fixing rings, and clamping grooves are formed in the outer surfaces of the fixing rings. According to the drug sustained-release device, through cooperative arrangement of the fixing ring and the through hole, the fixing shaft can pass through the through hole in stages under the pushing of the compression spring and the driving of the motor to the fixing shaft, and under the mutual cooperation of the clamping groove and the clamping block, the fixing shaft can drive the fixing ring to rotate by a proper angle; the fixing rings can be pushed by the compression springs to pass through the through holes, and the outer sides of the through holes are blocked by the next fixing ring.

Description

Technical Field

[0001] The utility model relates to the technical field of drug sustained release, and particularly relates to a drug sustained release device. Background Art

[0002] Adenomyosis, also known as adenomyopathy of uterus, is caused by the invasion of endometrial glands and stroma into the myometrium of the uterus, resulting in periodic hyperplasia, exfoliation and bleeding.

[0003] Chinese Patent Publication No. CN217472563U discloses a drug sustained release device implantor, which relates to the field of medical devices and includes an implant outer cylinder, a push rod slidably sleeved inside the implant outer cylinder, and a drug sustained release device; one end of the implant outer cylinder is a tip, and the drug sustained release device is located in the space formed by the outer cylinder and the push rod. The drug sustained release device can be moved out of the tip of the implant outer cylinder through the movement of the push rod for implantation operation. The tip of the implant outer cylinder has three elastic petals, which are conical pointed when naturally closed. When the push rod slides to push the nasal drug sustained release device to the tip, the three elastic petals open, and the nasal drug sustained release device rebounds into a conical pointed shape after being pushed out. The syringe-type structure of this application is convenient to use and simple to operate.

[0004] However, when this utility model is actually used, the following problems exist:

[0005] During the process of drug sustained release, the release is often uneven. Excessive or insufficient drug release will affect the therapeutic effect of the drug. Moreover, most of the existing drug sustained release devices control the drug sustained release speed by means of the permeability of materials. However, this method is often easily affected by external media, temperature and pressure, thereby affecting the normal release of the drug. Summary of the Utility Model

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a drug sustained release device, which solves the problems in the prior art:

[0007] During the process of drug sustained release, the release is often uneven. Excessive or insufficient drug release will affect the therapeutic effect of the drug. Moreover, most of the existing drug sustained release devices control the drug sustained release speed by means of the permeability of materials. However, this method is often easily affected by external media, temperature and pressure, thereby affecting the normal release of the drug.

[0008] To achieve the above object, the present utility model is realized through the following technical solutions: A drug slow-release device includes a fixed cylinder. A limiting cylinder for assisting sliding is fixedly installed on the inner bottom wall of the fixed cylinder. A limiting seat is slidably connected to the inner wall of the limiting cylinder. A spring is sleeved on the outer surface of the limiting cylinder. A motor is fixedly installed at the end of the limiting seat. The output end of the motor is connected to a fixed shaft by a key. A plurality of fixed rings are sleeved on the surface of the fixed shaft. Card slots are provided on the outer surfaces of the plurality of fixed rings. One end of the fixed cylinder is threadedly connected to a connecting cylinder. The other end of the connecting cylinder is threadedly connected to a connecting seat. The other side of the outer surface of the connecting seat is threadedly connected to a support cylinder. A medicine cylinder is detachably connected to the inner wall of the support cylinder. A piston plate is slidably connected to the inner wall of the medicine cylinder. The outer wall of the piston plate is threadedly connected to the end of the fixed shaft. A through hole adapted to the fixed ring is provided on the outer surface of the connecting seat. A block adapted to the card slot is fixedly connected to the inner side wall of the through hole.

[0009] Preferably, a protective sleeve is sleeved on the outer surface of the fixed cylinder, and anti-slip lines are provided on the outer surface of the protective sleeve.

[0010] Preferably, one end of the spring is fixedly connected to the inner bottom wall of the fixed cylinder, and the other end of the spring abuts against the surface of the limiting seat.

[0011] Preferably, the other end of the support cylinder is threadedly connected to a mounting seat, and a medicine spraying head is fixedly installed at the other end of the mounting seat.

[0012] Preferably, a protective cover is detachably connected to the inner wall of the support cylinder, and an observation window is provided on the surface of the protective cover.

[0013] Preferably, one end of the medicine cylinder is fixedly connected to a separation cotton, and a sealing ring is fixedly connected to the outer surface of the piston plate, and the outer surface of the sealing ring is in contact with the inner side wall of the medicine cylinder.

[0014] Preferably, a magnetic attraction strip is fixedly installed on the inner wall of the support cylinder, and an iron sheet adsorbed to the magnetic attraction strip is fixedly installed on the surface of the protective cover.

[0015] Preferably, a storage battery is fixedly installed at the other end of the fixed cylinder, and the storage battery is electrically connected to the motor through a wire.

[0016] The present utility model provides a drug slow-release device, which has the following beneficial effects:

[0017] The drug slow-release device, through the cooperation of the fixing ring and the through hole, can, under the push of the compression spring and the drive of the motor on the fixed shaft, enable the fixed shaft to pass through the through hole periodically. And with the mutual cooperation of the card slot and the card block, after the fixed shaft drives the fixing ring to rotate an appropriate angle, the fixing ring can be pushed through the through hole by the compression spring, and the next fixing ring blocks the outside of the through hole, and so on, to complete the segmented injection of the drug. And the card slots are sequentially arranged on the surfaces of multiple fixing rings in an annular array. Thus, under the drive of the motor, each fixing ring needs to rotate a relative angle when passing through the through hole, so as to extend the interval time of drug injection, thereby achieving a better slow-release effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the installation structure of the fixing cylinder of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the installation structure of the cartridge of the present utility model;

[0021] Figure 4 is a schematic structural diagram of the installation structure of the support cylinder of the present utility model;

[0022] Figure 5 is a schematic structural diagram of the installation structure of the protective cover of the present utility model;

[0023] Figure 6 is a schematic structural diagram of the installation structure of the limiting cylinder of the present utility model.

[0024] In the figure: 1, fixing cylinder; 2, storage battery; 3, limiting cylinder; 4, limiting seat; 5, spring; 6, motor; 7, fixed shaft; 8, fixing ring; 9, card slot; 10, connecting cylinder; 11, connecting seat; 12, support cylinder; 13, cartridge; 14, protective cover; 15, piston plate; 16, through hole; 17, card block; 18, mounting seat; 19, protective sleeve; 20, magnetic strip; 21, iron sheet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1 to 6 , the embodiments of the present utility model provide a drug slow-release device. In this embodiment, by improving the structure of the drug slow-release device, it has the advantage of good slow-release effect.

[0027] Example 1

[0028] Please refer to Figures 1 to 6 , which includes a fixed cylinder 1. A limiting cylinder 3 for assisting sliding is fixedly installed on the inner bottom wall of the fixed cylinder 1. A limiting seat 4 is slidably connected to the inner wall of the limiting cylinder 3. A spring 5 is sleeved on the outer surface of the limiting cylinder 3. A motor 6 is fixedly installed at the end of the limiting seat 4. A protective sleeve 19 is sleeved on the outer surface of the fixed cylinder 1. Anti-slip patterns are provided on the outer surface of the protective sleeve 19. One end of the spring 5 is fixedly connected to the inner bottom wall of the fixed cylinder 1, and the other end of the spring 5 abuts against the surface of the limiting seat 4;

[0029] Through the setting of the protective sleeve 19, with the cooperation of the anti-slip patterns, the stability of the user holding the device can be improved. Through the setting of the motor 6, when the motor 6 works, the output end of the motor 6 can drive the fixed shaft 7 to rotate, thereby providing power for the rotation of the fixed shaft 7. Through the setting of the spring 5, with the cooperation of the telescopic action of the spring 5, the spring 5 can push the limiting seat 4, thereby facilitating the pushing of the fixed shaft 7.

[0030] Example 2

[0031] Please refer to Figures 1 to 3 , in order to achieve the slow release of the drug, a fixed shaft 7 is key-connected to the output end of the motor 6. A plurality of fixing rings 8 are sleeved on the surface of the fixed shaft 7. Card slots 9 are provided on the outer surfaces of the plurality of fixing rings 8. One end of the fixed cylinder 1 is threadedly connected to a connecting cylinder 10, and the other end of the connecting cylinder 10 is threadedly connected to a connecting seat 11. A magnetic attraction strip 20 is fixedly installed on the inner wall of the support cylinder 12. An iron sheet 21 adsorbed to the magnetic attraction strip 20 is fixedly installed on the surface of the protective cover 14. A storage battery 2 is fixedly installed at the other end of the fixed cylinder 1. The storage battery 2 is electrically connected to the motor 6 through a wire;

[0032] Through the setting of the magnetic attraction strip 20, with the cooperation of the iron sheet 21, the disassembly and installation of the protective cover 14 can be facilitated, thereby facilitating the protection of the medicine cylinder 13 and also facilitating the maintenance of the medicine cylinder 13. Through the setting of the storage battery 2, the storage battery 2 can provide power for the operation of the motor 6, thereby effectively ensuring the normal operation of the motor 6.

[0033] Example 3

[0034] Please refer to Figures 1 to 4, in order to improve the drug sustained-release effect, a support cylinder 12 is threadedly connected to the other side of the outer surface of the connection base 11. The inner wall of the support cylinder 12 is detachably connected with a medicine cylinder 13. A piston plate 15 is slidably connected to the inner wall of the medicine cylinder 13. The outer wall of the piston plate 15 is threadedly connected to the end of the fixed shaft 7. A through hole 16 adapted to the fixed ring 8 is provided on the outer surface of the connection base 11. A clamping block 17 adapted to the clamping groove 9 is fixedly connected to the inner side wall of the through hole 16. The other end of the support cylinder 12 is threadedly connected with a mounting seat 18. A medicine spraying head is fixedly installed at the other end of the mounting seat 18. A protective cover 14 is detachably connected to the inner wall of the support cylinder 12. An observation window is provided on the surface of the protective cover 14. One end of the medicine cylinder 13 is fixedly connected with an isolation cotton. A sealing ring is fixedly connected to the outer surface of the piston plate 15. The outer surface of the sealing ring is in contact with the inner side wall of the medicine cylinder 13;

[0035] Through the setting of the observation window, since the observation window is provided on the surface of the protective cover 14, it is convenient to observe the situation inside the medicine cylinder 13. Through the setting of the sealing ring, the sealing effect between the piston plate 15 and the inner wall of the medicine cylinder 13 can be effectively guaranteed, and thus the pushing effect of the piston plate 15 on the drug can be effectively improved. Through the setting of the medicine spraying head, it is convenient for the piston plate 15 to push the drug to be applied to the area where the medicine needs to be applied through the medicine spraying head.

[0036] In the present utility model, the working steps of the device are as follows:

[0037] 1. First, remove the protective cover 14, insert the medicine cylinder filled with liquid medicine into the support cylinder 12, then threadedly connect the end of the fixed shaft 7 to the end of the piston plate 15, and threadedly connect the connecting cylinder 10 to the surface of the connection base 11, thereby compressing the spring 5. And the rotating direction of the motor 6 is the same as the screwing-in direction of the thread of the fixed shaft 7, so that the situation of slipping off will not occur;

[0038] 2. Secondly, start the motor 6, which can drive the fixed shaft 7 to rotate at a uniform and slow speed. When the fixed ring 8 rotates to the position where the clamping groove 9 is aligned with the clamping block 17 inside the through hole 16, the limit seat 4 will, under the pushing force of the elastic force of the spring 5, send the fixed ring 8 into the through hole 16. And the second fixed ring 8 will be re-locked because the clamping groove 9 and the clamping block 17 are not adapted, and will rotate following the rotation of the motor 6. And when the spring 5 pushes the fixed ring 8 into the through hole 16, it can drive the piston plate 15 to slide once inside the medicine cylinder 13, thereby completing a single drug injection. And so on, every time a fixed ring 8 is sent into the through hole 16, an injection is completed, so as to realize the sustained release of the drug;

[0039] 3. Then, after all the fixing rings 8 pass through the through holes 16, the injection of all the medicine can be completed. Then, the user can disassemble the connecting cylinder 10 from the connecting seat 11, and while pulling the reverse motor 6 outwards, pull outwards at the same time, so that the fixed shaft 7 drives the fixing ring 8 to be withdrawn from the through hole 16. And under the reverse rotation of the motor 6, it can be separated from the fixed shaft 7 when the piston plate 15 reaches the end. The user opens the protective cover 14 and takes out the medicine cylinder 13 together with the piston plate 15 for replacement.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drug sustained release device, comprising a fixed cylinder (1), characterized in that: A limiting cylinder (3) for assisting sliding is fixedly mounted on the inner bottom wall of the fixed cylinder (1); the inner wall of the limiting cylinder (3) is slidably connected to a limiting seat (4); a spring (5) is sleeved on the outer surface of the limiting cylinder (3); a motor (6) is fixedly mounted on the end of the limiting seat (4); an output end of the motor (6) is connected to a fixed shaft (7) via a key; a plurality of fixing rings (8) are sleeved on the surface of the fixed shaft (7); a plurality of fixing rings (8) are provided on the outer surfaces of the fixing rings (8); one end of the fixed cylinder (1) is threadedly connected to a connecting cylinder (10); the connecting cylinder (10) is threadedly connected to the fixing shaft (7); and a plurality of fixing rings (8) are provided on the outer surfaces of the fixing rings (8). The other end of the connecting tube (10) is threadedly connected to a connecting seat (11), the other side of the outer surface of the connecting seat (11) is threadedly connected to a supporting tube (12), the inner wall of the supporting tube (12) is detachably connected to a cartridge (13), the inner wall of the cartridge (13) is slidably connected to a piston plate (15), the outer wall of the piston plate (15) is threadedly connected to the end of the fixed shaft (7), the outer surface of the connecting seat (11) is provided with a through hole (16) adapted to the fixing ring (8), and the inner side wall of the through hole (16) is fixedly connected to a clamping block (17) adapted to the clamping groove (9).

2. A drug sustained release device according to claim 1, characterized in that: The outer surface of the fixing tube (1) is sleeved with a protective sleeve (19), and the outer surface of the protective sleeve (19) is provided with anti-slip grooves.

3. A drug sustained release device according to claim 1, characterized in that: One end of the spring (5) is fixedly connected to the inner bottom wall of the fixed cylinder (1), and the other end of the spring (5) is tightly pressed against the surface of the limiting seat (4).

4. A drug sustained release device according to claim 1, characterized in that: The other end of the support tube (12) is threadedly connected to a mounting seat (18), and the other end of the mounting seat (18) is fixedly mounted with a spray head.

5. A drug sustained release device according to claim 1, characterized in that: The inner wall of the support tube (12) is detachably connected to a protective cover (14), and an observation window is provided on the surface of the protective cover (14).

6. A drug sustained release device according to claim 1, characterized in that: One end of the cartridge (13) is fixedly connected to an isolation cotton, and the outer surface of the piston plate (15) is fixedly connected to a sealing ring, wherein the outer surface of the sealing ring contacts the inner wall of the cartridge (13).

7. A drug sustained release device according to claim 5, characterized in that: A magnetic attraction strip (20) is fixedly mounted on the inner wall of the support tube (12), and an iron sheet (21) adsorbed to the magnetic attraction strip (20) is fixedly mounted on the surface of the protective cover (14).

8. A drug sustained release device according to claim 1, characterized in that: A storage battery (2) is fixedly mounted on the other end of the fixing cylinder (1), and the storage battery (2) is electrically connected to the motor (6) via a wire.

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