Dosing device

Abstract

The utility model provides a dosing device, which relates to the technical field of medical instruments and comprises a dosing syringe and a disposable dosing injection head, two dosing nozzles are arranged in the disposable dosing injection head, a core rod is mounted in the dosing syringe, and the end of the core rod is connected with a rubber piston. And a movable sliding sleeve is sleeved outside the dosing injection tube and is connected with the disposable dosing injection head. When the end of the disposable administration injection head is inserted into the nasal cavity of a patient, the rubber piston is pushed to move inwards through the core rod, liquid medicine in the administration injection cylinder enters the nasal cavity of the patient through the administration spray head, the disposable administration injection head is connected with the administration injection cylinder in a rotating and clamping mode, and the disposable administration injection head can be replaced. Other parts are repeatedly used, so that the use cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a drug delivery device. Background Art

[0002] In order to avoid cross infection during the use of existing respiratory tract medication dispensers, the medication dispensers are usually designed as disposable items. After use, the medication dispensers will be centrally discarded and destroyed and cannot be reused. The cost of a single medication treatment is high. Utility Model Content

[0003] The present invention relates to a drug delivery device, which solves the problem that the existing drug delivery devices for respiratory tract cannot be reused during application and the cost of single drug delivery treatment is high.

[0004] In a first aspect of the present disclosure, a drug delivery device is provided, which specifically includes: a drug delivery syringe; a disposable drug delivery injection head is installed on the outside of the end of the drug delivery syringe, and two drug delivery nozzles are arranged inside the disposable drug delivery injection head, and the drug delivery nozzles are connected to the inside of the drug delivery syringe; a core rod is installed inside the drug delivery syringe, and a rubber piston is connected to the end of the core rod, and the rubber piston is slidably connected to the inside of the drug delivery syringe; a movable sliding sleeve is mounted on the outside of the drug delivery syringe, and the movable sliding sleeve is connected to the disposable drug delivery injection head.

[0005] Furthermore, the end of the dosing injection barrel is inserted into the disposable dosing injection head, and two grooves are arranged on the outer side of the end of the dosing injection barrel. Rubber sealing rings are installed in the grooves, and the rubber sealing rings are in contact with the inner side of the disposable dosing injection head.

[0006] Furthermore, the disposable medication injection head is provided with two connecting grooves on the outside, and the connecting grooves are L-shaped. Two force blocks are provided on the outside of the medication injection barrel, and the force blocks are connected to the innermost ends of the connecting grooves. The rubber piston is pushed inward by the core rod, and the medicine inside the medication injection barrel enters the patient's nasal cavity through the medication nozzle, thereby achieving a therapeutic effect on the patient's respiratory tract. The disposable medication injection head is connected to the medication injection barrel by a rotating clamping method. The disposable medication injection head can be replaced, and other components can be reused.

[0007] Furthermore, the inner side of the movable sliding sleeve is in sliding contact with the outer side of the medication injection barrel.

[0008] Furthermore, the medication injection barrel is provided with two guide blocks on the outside, and the movable sleeve is provided with a movable hole on the outside. The guide blocks are slidably connected in the movable holes, and the guide blocks and the movable holes are slidably matched to guide the movement of the movable sleeve.

[0009] Furthermore, two insert blocks are provided on the outside of the movable sliding sleeve, and the insert blocks are inserted into the connecting grooves provided on the disposable medication injection head.

[0010] Furthermore, a force circle is provided on the outside of the dosing injection barrel, and a spring is mounted on the outside of the dosing injection barrel, one end of the spring is in contact with the force circle, and the other end of the spring is in contact with the movable sleeve. When the disposable dosing injection head is connected to the dosing injection barrel, the force block is located at the innermost end of the connecting groove, and the spring pushes the movable sleeve to move, so that the insert block is inserted into the connecting groove, which has the effect of locking and fixing the disposable dosing injection head, thereby ensuring the firmness of the connection between the disposable dosing injection head and the dosing injection barrel.

[0011] The utility model provides a drug delivery device, which has the following beneficial effects:

[0012] When the utility model is in use, when the end of the disposable medication injection head is inserted into the patient's nasal cavity, the core rod pushes the rubber piston to move inward, and the medicine inside the medication injection barrel enters the patient's nasal cavity through the medication nozzle, thereby achieving a therapeutic effect on the patient's respiratory tract. The disposable medication injection head is connected to the medication injection barrel by a rotating clamping method, and the disposable medication injection head can be replaced.

[0013] In addition, the sliding cooperation between the guide block and the movable hole plays a guiding effect on the movement of the movable sleeve, thereby avoiding the rotation of the movable sleeve outside the medication injection barrel; when the disposable medication injection head is connected to the medication injection barrel, the force block is located at the innermost end of the connecting groove, and the spring pushes the movable sleeve to move, so that the insert block is inserted into the connecting groove, which plays a locking and fixing effect on the disposable medication injection head, ensuring the firmness of the connection between the disposable medication injection head and the medication injection barrel; when the disposable medication injection head needs to be removed, the movable sleeve is moved in the reverse direction, the spring contracts and accumulates force, so that the insert block is separated from the connecting groove, and the disposable medication injection head can be rotated to be removed from the end of the medication injection barrel, which is easy to operate.

[0014] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0016] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0017] In the attached picture:

[0018] Figure 1 The overall axial structure schematic diagram of the drug delivery device of the present application is shown;

[0019] Figure 2A schematic diagram showing the disassembly structure of the medication injection barrel and the disposable medication injection head of the medication dispenser of the present application is shown;

[0020] Figure 3 The schematic diagram of the axial structure of the drug delivery syringe of the drug delivery device of the present application is shown;

[0021] Figure 4 A schematic diagram of the axial structure of a disposable medication injection head of the medication dispenser of the present application is shown;

[0022] Figure 5 A schematic diagram of the axial side structure of the movable sleeve of the drug delivery device of the present application is shown.

[0023] Reference numerals list

[0024] 1. Dosing syringe; 101. groove; 102. force block; 103. guide block; 104. force circle; 2. disposable dosing injection head; 201. dosing nozzle; 202. connecting groove; 3. core rod; 4. rubber piston; 5. rubber sealing ring; 6. movable sleeve; 601. movable hole; 602. plug block; 7. spring. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] Example 1: Please refer to Figures 1 to 5 :

[0027] The utility model proposes a drug delivery device, comprising: a drug delivery syringe 1; a disposable drug delivery injection head 2 is installed outside the end of the drug delivery syringe 1, two drug delivery nozzles 201 are arranged inside the disposable drug delivery injection head 2, and the drug delivery nozzle 201 is connected to the inside of the drug delivery syringe 1; a core rod 3 is installed inside the drug delivery syringe 1, a rubber piston 4 is connected to the end of the core rod 3, and the rubber piston 4 is slidably connected to the inside of the drug delivery syringe 1; a movable sliding sleeve 6 is sleeved outside the drug delivery syringe 1, and the movable sliding sleeve 6 is connected to the disposable drug delivery injection head 2; the end of the drug delivery syringe 1 is inserted into the disposable drug delivery injection head 2, two grooves 101 are arranged outside the end of the drug delivery syringe 1, and a rubber sealing ring 5 is installed in the groove 101, and the rubber sealing ring 5 is installed in the groove 101. The ring 5 contacts the inner side of the disposable medication injection head 2; the disposable medication injection head 2 is provided with two connecting grooves 202 on the outside, and the connecting grooves 202 are L-shaped; the medication injection barrel 1 is provided with two force blocks 102 on the outside, and the force blocks 102 are connected to the innermost ends of the connecting grooves 202; by adopting the above technical scheme, when the end of the disposable medication injection head 2 is inserted into the patient's nasal cavity, the core rod 3 pushes the rubber piston 4 to move inward, and the medicine inside the medication injection barrel 1 enters the patient's nasal cavity through the medication nozzle 201, which has a therapeutic effect on the patient's respiratory tract, and the disposable medication injection head 2 is connected to the medication injection barrel 1 by a rotating clamping method, and the disposable medication injection head 2 can be replaced, and other components can be reused, thereby reducing the use cost.

[0028] Embodiment 2, on the basis of embodiment 1, the inner side of the movable sleeve 6 is in sliding contact with the outer side of the dosing syringe 1, two guide blocks 103 are provided on the outside of the dosing syringe 1, and a movable hole 601 is provided on the outside of the movable sleeve 6, and the guide block 103 is slidably connected in the movable hole 601; by adopting the above technical scheme, the guide block 103 is slidably matched with the movable hole 601, which has the effect of guiding the movement of the movable sleeve 6, thereby avoiding the rotation of the movable sleeve 6 outside the dosing syringe 1.

[0029] In the embodiment of the present disclosure, two plug blocks 602 are provided on the outside of the movable sleeve 6, and the plug blocks 602 are inserted into the connecting groove 202 provided on the disposable medication injection head 2. A force circle 104 is provided on the outside of the medication injection barrel 1, and a spring 7 is mounted on the outside of the medication injection barrel 1. One end of the spring 7 contacts the force circle 104, and the other end of the spring 7 contacts the movable sleeve 6. With the above technical solution, when the disposable medication injection head 2 is connected with the medication injection barrel 1, the force block 102 is located at the innermost end of the connecting groove 202, and the spring 7 pushes the movable sleeve 6 to move, so that the plug block 602 is inserted into the connecting groove 202, which has the effect of locking and fixing the disposable medication injection head 2, ensuring the firmness of the connection between the disposable medication injection head 2 and the medication injection barrel 1. When the disposable medication injection head 2 needs to be removed, the movable sleeve 6 is moved in the reverse direction, and the spring 7 contracts and accumulates force to make the plug block 602 disengage from the connecting groove 202, so that the disposable medication injection head 2 can be rotated, and the disposable medication injection head 2 can be removed from the end of the medication injection barrel 1, which is easy to operate.

[0030] Working principle: the guide block 103 is slidably matched with the movable hole 601, which plays a guiding role in the movement of the movable sleeve 6; the disposable medication injection head 2 is connected to the medication injection barrel 1, the force block 102 is located at the innermost end of the connecting groove 202, and the spring 7 pushes the movable sleeve 6 to move, so that the plug block 602 is inserted into the connecting groove 202, which plays a locking and fixing effect on the disposable medication injection head 2, and ensures the firmness of the connection between the disposable medication injection head 2 and the medication injection barrel 1; when the end of the disposable medication injection head 2 is inserted into the patient's nasal cavity, the core rod 3 pushes the rubber piston 4 to move inward, and the medicine inside the medication injection barrel 1 enters the patient's nasal cavity through the medication nozzle 201, which plays a therapeutic effect on the patient's respiratory tract; after the respiratory tract medication is completed, the movable sleeve 6 is moved in the opposite direction, the spring 7 contracts and accumulates force, so that the plug block 602 is separated from the connecting groove 202, and the disposable medication injection head 2 can be rotated, and the disposable medication injection head 2 can be removed from the end of the medication injection barrel 1.

[0031] In this article, there are a few points to note:

[0032] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0033] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0034] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A drug delivery device, comprising: A dosing syringe (1); a disposable dosing injection head (2) is installed on the outside of the end of the dosing syringe (1); a core rod (3) is installed inside the dosing syringe (1); the end of the core rod (3) is connected to a rubber piston (4), and the rubber piston (4) is slidably connected to the inside of the dosing syringe (1); it is characterized in that two dosing nozzles (201) are arranged inside the disposable dosing injection head (2), and the dosing nozzles (201) are connected to the inside of the dosing syringe (1); the outside of the dosing syringe (1) is covered with a movable sliding sleeve (6), and the movable sliding sleeve (6) is connected to the disposable dosing injection head (2).

2. A drug delivery device according to claim 1, characterized in that: The end of the dosing injection barrel (1) is inserted into the disposable dosing injection head (2), two grooves (101) are arranged on the outer side of the end of the dosing injection barrel (1), and rubber sealing rings (5) are installed in the grooves (101).

3. A drug delivery device according to claim 1, characterized in that: The disposable medication injection head (2) is provided with two connecting grooves (202) on the outside, the connecting grooves (202) are L-shaped, and the medication injection barrel (1) is provided with two force blocks (102) on the outside, the force blocks (102) are connected to the innermost ends of the connecting grooves (202).

4. A drug delivery device according to claim 1, characterized in that: The inner side of the movable sliding sleeve (6) is in sliding contact with the outer side of the dosing injection barrel (1).

5. A drug delivery device according to claim 1, characterized in that: The medication injection barrel (1) is provided with two guide blocks (103) on the outside, the movable sleeve (6) is provided with a movable hole (601) on the outside, and the guide blocks (103) are slidably connected in the movable hole (601).

6. A drug delivery device according to claim 3, characterized in that: The movable sliding sleeve (6) is provided with two inserting blocks (602) on the outside, and the inserting blocks (602) are inserted into the connecting grooves (202) provided on the disposable medication injection head (2).

7. A drug delivery device according to claim 1, characterized in that: The medication injection barrel (1) is provided with a force circle (104) on the outside, and a spring (7) is sleeved on the outside of the medication injection barrel (1), one end of the spring (7) is in contact with the force circle (104), and the other end of the spring (7) is in contact with the movable sliding sleeve (6).

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