Laboratory mouse intragastric administration device

Abstract

The utility model belongs to the technical field of injectors, and particularly relates to a laboratory mouse intragastric administration device. The syringe is of a hollow structure, a push rod structure is movably arranged in the syringe, one end of the syringe is connected with a needle head structure, the push rod structure is moved to change the position of the push rod structure in the syringe, and liquid medicine is sucked in or injected out from the needle head structure. The tail portion of the syringe is provided with the extending portion extending towards the periphery, the height of the clamping groove is matched with the thickness of the extending portion, the material consumption of the extending portion is smaller than that of an existing syringe tailstock, then the extending portion is clamped into the clamping groove of the movable tailstock, and the movable tailstock can be used for fixing the syringe. The movable tailstock is connected to the syringe, and the push rod structure penetrates out of the through hole to be normally used. After injection is finished, the movable tailstock can be installed on a new disposable syringe for cyclic utilization.

Description

Technical Field

[0001] The utility model belongs to the technical field of syringes, and in particular relates to a device for administering medicine by intragastric administration to experimental mice. Background Art

[0002] The mouse drug delivery device is an injection device used for gavage and intraperitoneal injection into mice.

[0003] A Chinese patent application with application number CN201520139492.2 discloses a non-invasive drug delivery device for mice trachea, comprising a drug delivery device and a tongue depressor: the drug delivery device is used to deliver drugs directly from the mouse oral trachea, comprising a syringe, the injection port of the syringe is fixedly sleeved with an injection tube, and the end of the injection tube is sleeved with a conical drug delivery tube via a connecting tube; the tongue depressor is used to assist in fixing the mouse tongue when delivering drugs, comprising a handle and a tongue depressor component fixed on the handle, and a light is also provided on the top of the tongue depressor to provide auxiliary lighting when delivering drugs.

[0004] Chinese patent application number CN201520721581.8 discloses a syringe ( Figure 1 ), which includes a syringe, a needle set and a push rod. The syringe includes a convergence section located at one end of the syringe, and the syringe surrounds a chamber. The needle set includes an adapter, a needle base and a needle head. The adapter is detachably arranged in the convergence section and has a buckle groove inside. The needle base is connected to the adapter, and the needle head is arranged at the other end of the needle base away from the adapter. The outer wall of the adapter is provided with a code, and the code is a concave-convex structure engraved by the mold for manufacturing and forming the adapter. The push rod includes an elastic piston and a push piece. The elastic piston is slidably arranged inside the syringe, and one end of the push piece is penetrated by the elastic piston and extends to have a buckle portion.

[0005] However, syringes in the prior art are Figure 1 As shown, in order to provide a fulcrum for holding, a flat tail seat is usually provided at the tail of the syringe, and the tail seat and the syringe barrel are integrally connected, which will undoubtedly increase the raw materials and cost of syringe manufacturing. For this reason, an improved design is carried out to provide an experimental mouse gavage syringe dosing device with a detachable and recyclable tail seat. Utility Model Content

[0006] In view of the above-mentioned deficiencies in the prior art, the utility model provides a device for intragastric administration of drug to experimental mice, which is used to solve the problems in the above-mentioned background technology.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A device for administering medication via oral gavage to experimental mice comprises a syringe, which is a hollow structure, a push rod structure movably arranged inside the syringe, one end of the syringe being connected to a needle structure, the push rod structure is moved to change its position inside the syringe, and a drug solution is sucked into or injected out of the needle structure. The device is characterized in that it also comprises a movable tail seat, which is detachably arranged at one end of the syringe away from the needle structure.

[0009] Further, the syringe comprises:

[0010] A cylinder, wherein the cylinder is a hollow tubular structure;

[0011] An injection nozzle, integrally connected to one end of the barrel, and the needle structure is connected to the injection nozzle;

[0012] The extension part is integrally connected to the other end of the cylinder, and the extension part is an annular structure formed by extending the tail of the cylinder toward the outer periphery.

[0013] Furthermore, the movable tailstock is a box structure with a notch on one side, a slot is provided along the notch direction of the movable tailstock, a through hole is provided on the slot and passes through the slot, the cross-sectional shape of the through hole is a circle with a notch, the width of the slot is greater than the diameter of the extension portion, the aperture of the through hole is greater than the aperture of the cylinder, and the aperture of the through hole is smaller than the outer diameter of the extension portion.

[0014] Furthermore, the push rod structure comprises a push rod body, one end of the push rod body is provided with a connector, the connector is connected to a piston, and the other end of the push rod body is provided with a pressing block.

[0015] Furthermore, the needle structure comprises a needle mouth and a needle that are integrally connected, and the needle mouth is plugged into the injection nozzle.

[0016] Furthermore, it also includes a cap structure, which is sleeved on the outside of the needle structure.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] In order to solve the problem that ordinary syringes in the prior art provide a fulcrum by adding a fixed tailstock, but the fixed tailstock increases the cost and consumables of syringe manufacturing, a detachable and replaceable tailstock is designed for this purpose, which can be recycled, thereby reducing manufacturing costs and saving resources. The tail of the specific syringe is provided with an extension extending to the periphery. The extension can be a circular ring with a smaller width or an arc with a narrower width, or even a rectangular sheet with a narrower width, which can be stuck in the card slot. The height of the card slot is adapted to the thickness of the extension, and the material used is less than that of the existing syringe tailstock. Then the extension is stuck into the card slot of the movable tailstock, the movable tailstock is connected to the syringe, and the push rod structure is passed through the through hole for normal use. After the injection, the movable tailstock can be installed on a new disposable syringe for recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a syringe in the prior art;

[0020] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of a device for intragastric administration of drugs to experimental mice according to the utility model;

[0021] Figure 3 This is a schematic diagram of the disassembly and assembly structure of a device for intragastric administration of drugs to experimental mice according to the utility model;

[0022] The reference numerals in the drawings of the specification include:

[0023] Injection barrel (1), movable tailstock (2), push rod structure (3), needle structure (4), cap structure (5),

[0024] A barrel (11), an injection nozzle (12), an extension portion (13), a slot (21), a through hole (22), a push rod body (31), a connector (311), a pressing block (312), a piston (32), a needle nozzle (41), a needle (42), a cap seat (51), and a cover cap (52). DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0027] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Embodiment 1:

[0030] like Figure 2-3 Specifically, the utility model is a drug delivery device for experimental mice, comprising: a syringe 1, the syringe 1 is a hollow structure, a push rod structure 3 is movably arranged in the syringe 1, one end of the syringe 1 is connected to a needle structure 4, the push rod structure 3 is moved to change the position of the push rod structure 3 in the syringe 1, and the drug solution is sucked into or injected out from the needle structure 4, characterized in that it also includes a movable tailstock 2, which is detachably arranged at one end of the syringe 1 away from the needle structure 4.

[0031] The syringe 1 comprises:

[0032] The cylinder 11 is a hollow tubular structure;

[0033] The injection nozzle 12 is integrally connected to one end of the barrel 11, and the needle structure 4 is connected to the injection nozzle 12;

[0034] The extension portion 13 is integrally connected to the other end of the cylinder 11 , and the extension portion 13 is an annular structure formed by extending the tail of the cylinder 11 toward the periphery.

[0035] The movable tailstock 2 is a box body structure with a notch on one side, and a slot 21 is provided along the notch direction of the movable tailstock 2. The slot 21 is provided with a through hole 22 that penetrates the slot 21. The cross-sectional shape of the through hole 22 is a notched circle. The width of the slot 21 is greater than the diameter of the extension portion 13, the aperture of the through hole 22 is greater than the aperture of the barrel 11, and the aperture of the through hole 22 is smaller than the outer diameter of the extension portion 13.

[0036] The push rod structure 3 includes a push rod body 31 . A connector 311 is disposed at one end of the push rod body 31 . A piston 32 is connected to the connector 311 . A pressing block 312 is disposed at the other end of the push rod body 31 .

[0037] The needle structure 4 includes a needle nozzle 41 and a needle 42 which are integrally connected. The needle nozzle 41 is plugged into the injection nozzle 12 .

[0038] It also includes a cap structure 5, which is sleeved on the outside of the needle structure 4 to protect the needle 42. The cap is a conventional setting in the prior art, so it will not be described in detail.

[0039] The implementation principle of the intragastric drug delivery device for experimental mice of the present application is to solve the problem that in the prior art, ordinary syringes provide a fulcrum by adding a fixed tailstock, but the fixed tailstock increases the cost and consumables of syringe manufacturing. For this purpose, a detachable and replaceable tailstock is designed and can be recycled, thereby reducing the manufacturing cost and saving resources. The tail of the specific syringe 1 is provided with an extension portion 13 extending to the periphery. The extension portion 13 described can be a circular ring with a smaller width or an arc with a narrower width, or even a rectangular sheet with a narrower width, which can be stuck in the card slot 21. The height of the card slot 21 is adapted to the thickness of the extension portion 13, and the material used is less than that of the existing syringe tailstock. Then the extension portion 13 is stuck in the card slot 21 of the movable tailstock 2, and the movable tailstock 2 is connected to the syringe 1. The push rod structure 3 passes through the through hole 22 for normal use. After the injection, the movable tailstock 2 can be installed on a new disposable syringe for recycling.

[0040] The above are only embodiments of the utility model. The common sense such as the known specific structures and characteristics in the scheme is not described in detail here. The ordinary technicians in the field are aware of all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the field can improve and implement the scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for the ordinary technicians in the field to implement this application. It should be pointed out that for the technicians in this field, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A drug delivery device for experimental mice, comprising: a syringe (1), wherein the syringe (1) is a hollow structure, a push rod structure (3) is movably arranged in the syringe (1), one end of the syringe (1) is connected to a needle structure (4), the push rod structure (3) is moved to change the position of the push rod structure (3) in the syringe (1), and the drug solution is sucked into or injected out from the needle structure (4), characterized in that: It also comprises a movable tailstock (2), which is detachably arranged at one end of the injection barrel (1) away from the needle structure (4).

2. The intragastric drug administration device for experimental mice according to claim 1, characterized in that: The syringe (1) comprises: A cylinder (11), wherein the cylinder (11) is a hollow tubular structure; An injection nozzle (12) is integrally connected to one end of the barrel (11), and the needle structure (4) is connected to the injection nozzle (12); The extension portion (13) is integrally connected to the other end of the cylinder (11), and the extension portion (13) is an annular structure formed by extending the tail of the cylinder (11) toward the periphery.

3. The intragastric drug administration device for experimental mice according to claim 2, characterized in that: The movable tailstock (2) is a box structure with a notch on one side, a slot (21) is provided along the notch direction of the movable tailstock (2), a through hole (22) is provided on the slot (21) and passes through the slot (21), the cross-sectional shape of the through hole (22) is a notched circle, the width of the slot (21) is greater than the diameter of the extension part (13), the aperture of the through hole (22) is greater than the aperture of the cylinder (11), and the aperture of the through hole (22) is smaller than the outer diameter of the extension part (13).

4. The intragastric drug administration device for experimental mice according to claim 1, characterized in that: The push rod structure (3) comprises a push rod body (31), one end of the push rod body (31) is provided with a connecting head (311), the connecting head (311) is connected to a piston (32), and the other end of the push rod body (31) is provided with a pressing block (312).

5. The intragastric drug administration device for experimental mice according to claim 2, characterized in that: The needle structure (4) comprises a needle mouth (41) and a needle (42) which are integrally connected, and the needle mouth (41) is plugged into the injection nozzle (12).

6. The intragastric drug administration device for experimental mice according to claim 1, characterized in that: It also comprises a cap structure (5), wherein the cap structure (5) is sleeved on the outside of the needle structure (4).

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