Auxiliary pushing assembly for injector

Abstract

The utility model relates to the technical field of medical equipment, in particular to an auxiliary pushing assembly for an injector. Comprising a shell, a sleeve is arranged in the shell, a push rod is arranged in the sleeve in a sliding mode, the push rod is sleeved with a main push spring, a plurality of positioning glass beads are arranged on the shell, a plurality of balls are connected to the upper side of the sleeve in a clamped mode, a needle cylinder is arranged at the position, at the bottom of the sleeve, in the shell, and the positioning glass beads are connected with the sleeve in a clamped mode. The push rod downwards extrudes the main push spring so as to extrude the needle cylinder, and when the main push spring resets, the push rod is pushed to be separated from the needle cylinder. The push rod is used in cooperation with the main push spring and the pressure bearing, medicine in the needle cylinder can be conveniently and quantitatively extruded, meanwhile, axial force is effectively supported and transmitted, the stability and stress balance of the push rod are ensured, medicine is conveniently taken out and automatically reset, rotation fixing is convenient through cooperation with the positioning glass bead, and the dosage of the medicine injected each time is accurately adjusted and set; and the injection accuracy and safety are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field, concretely relates to a syringe auxiliary push assembly. BACKGROUND

[0002] As a new type of drug delivery device, the needleless injector directly sends the medicine into the skin through high-pressure liquid or gas, avoiding the pain and infection risk caused by traditional needle injection. The existing needleless injector usually includes a medicine storage container, a propelling device and a spray head. The propelling device pushes the medicine out of the medicine storage container by mechanical or pneumatic means, and the medicine is sprayed into the skin at high speed through the spray head.

[0003] However, the existing propelling device often cannot accurately control the dose of medicine for each injection, resulting in inconsistent doses and affecting the treatment effect. Moreover, the operation is relatively complex, and professional medical personnel are required to operate, which is not convenient for family or non-professional personnel to use. After injection, it cannot be reset quickly, affecting the efficiency of continuous injection. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a syringe auxiliary push assembly to solve the problems of the existing propelling device that cannot accurately control the dose and is complex to operate.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A syringe auxiliary push assembly is provided, which includes a housing, a sleeve is arranged in the housing, a push rod is slidably arranged in the sleeve, a main push spring is sleeved on the push rod, a plurality of positioning glass beads are arranged on the housing, a plurality of ball bearings are connected to the upper side of the sleeve, a needle cylinder is arranged at the bottom of the sleeve in the housing, the plurality of positioning glass beads are connected to the sleeve, the push rod presses the main push spring downward to press the needle cylinder, and the main push spring resets to push the push rod and the needle cylinder apart.

[0007] As a preferred scheme of the syringe auxiliary push assembly, the housing includes an upper cover, a lower cover is arranged at the bottom of the upper cover, a sealing cover is arranged at the bottom of the lower cover, three rows of through holes are arranged around the center of the lower cover, a locking assembly is arranged in the upper cover, a plurality of positioning glass beads are arranged equidistantly on the upper side of the lower cover in a ring shape, and the needle cylinder is located in the sealing cover.

[0008] As a kind of preferred scheme of the injector auxiliary push component, the sleeve further includes four mounting holes equidistantly opened in the upper side protrusion of the sleeve, the bottom of the mounting hole in the sleeve is provided with a positioning groove, a headless hexagonal screw is arranged in the mounting hole, the headless hexagonal screw corresponds to the through hole, the positioning glass bead corresponds to the positioning groove, and the inner side of the positioning glass bead is clamped in the positioning groove.

[0009] As a kind of preferred scheme of the injector auxiliary push component, the upper side of the push rod is provided with a pressure bearing, and the lower side of the push rod is provided with a gasket, the pressure bearing is located in the upper side protrusion of the sleeve, and the gasket is located in the lower cover.

[0010] The beneficial effects of the present application are as follows:

[0011] Through the cooperation of the push rod, the main push spring and the pressure bearing, the medicine in the needle cylinder can be conveniently quantitatively extruded, the axial force can be effectively supported and transmitted, the stability and force balance of the push rod are ensured, and the medicine is convenient to take out and automatically reset.

[0012] The positioning glass bead is convenient to rotate and fix, the medicine dose of each injection can be accurately adjusted and set, and the accuracy and safety of injection are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating laborious work on the basis of these drawings.

[0014] Fig. 1 It is a perspective structural schematic diagram of the injector auxiliary push component according to an embodiment of the present application.

[0015] Fig. 2 It is a sectional view schematic diagram of the injector auxiliary push component according to an embodiment of the present application.

[0016] Fig. 3 It is an explosion structural schematic diagram of the injector auxiliary push component according to an embodiment of the present application.

[0017] In the drawings:

[0018] 1, shell; 11, upper cover; 12, lower cover; 13, sealing cover; 2, sleeve; 21, mounting hole; 22, positioning groove; 23, headless hexagonal screw; 3, push rod; 4, main push spring; 5, positioning glass bead; 6, ball; 7, needle cylinder; 8, pressure bearing; 9, gasket. DETAILED DESCRIPTION

[0019] The technical solutions of the utility model are further illustrated below in combination with the drawings and through specific embodiments.

[0020] The drawings are only used for example illustration, and the representation is only a schematic diagram, not a real object diagram, and cannot be understood as a limitation on the patent; in order to better illustrate the embodiments of the utility model, some components of the drawings can 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 can be omitted.

[0021] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, structure and operation, therefore the positional relationship described in the drawings is only used for example illustration, and cannot be understood as a limitation on the patent, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0022] In the description of the utility model, unless otherwise explicitly specified and limited, if the connection relationship between the components appears, the term should be understood in a broad sense, for example, it can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through an intermediate medium; can be the communication inside two components or the interaction relationship between two components. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific situation.

[0023] For example, the term "connected" can be understood as follows: Figs. 1-3As shown, the utility model provides a technical scheme: a syringe auxiliary push component, including casing 1, casing 1 is installed with a sleeve 2, slidingly installed with a push rod 3 in sleeve 2, the push rod 3 is equipped with a main push spring 4, four positioning glass beads 5 are installed on the center annular equidistance of casing 1, five ball bearings 6 are installed on the center annular equidistance of the upper side of sleeve 2, a needle cylinder 7 is installed in the bottom of sleeve 2 in casing 1, a pressure bearing 8 is installed on the upper side of push rod 3, a gasket 9 is installed on the lower side of push rod 3, the direct contact between push rod 3 and main push spring 4, pressure bearing 8 and other components is reduced through gasket 9, thereby reducing wear and tear, prolonging the service life of equipment, when using, by pressing push rod 3 downwards extruding main push spring 4 and then extruding needle cylinder 7, and then extruding the medicine stored in needle cylinder 7, press push rod 3, and the axial force is effectively supported and transmitted through pressure bearing 8, to ensure the stability and stress balance of push rod 3, facilitate the accurate extraction of the medicine stored in needle cylinder 7, release push rod 3, main push spring 4 resets and pushes away push rod 3 and needle cylinder 7 to complete the medicine extraction action, simple operation without professional medical staff can operate.

[0024] As shown, Fig. 2 The casing 1 includes an upper cover 11, a lower cover 12 is installed at the bottom of the upper cover 11, a sealing cover 13 is installed at the bottom of the lower cover 12, the needle cylinder 7 is installed in the sealing cover 13, three rows of through holes are installed around the center of the lower cover 12, of which the lower two rows each have four through holes, and the upper row has only one through hole on the front side, a locking assembly is installed in the upper cover 11, the sleeve 2 is pressed against the locking assembly outward by the five ball bearings 6, four positioning glass beads 5 are installed on the upper side of the lower cover 12 in an annular equidistant manner, the pressure bearing 8 is located in the cavity of the protrusion on the upper side of the sleeve 2, and the gasket 9 is located in the lower cover 12. The positioning glass beads 5 facilitate the rotational fixation of the lower cover 12, and the required injection dose can be accurately adjusted and set each time. Only by selecting the number of times of rotating the lower cover 12 can the injection volume each time be adjusted, ensuring the accuracy and safety of injection.

[0025] As shown, Fig. 3 The sleeve 2 further includes four mounting holes 21 arranged in an annular equidistant manner on the protrusion on the upper side of the sleeve 2, a positioning groove 22 is formed at the bottom of each mounting hole 21 on the upper side of the sleeve 2, there are four positioning grooves 22 in total, and a headless hexagonal screw 23 is installed in each mounting hole 21, there are four headless hexagonal screws 23 in total, the four headless hexagonal screws 23 correspond to the four through holes in the middle row, thereby fixing the sleeve 2 in the upper cover 11, the four positioning glass beads 5 correspond to the positioning grooves 22, and the inner sides of the four positioning glass beads 5 are clamped in the positioning grooves 22. When adjusting the injection volume by rotating the lower cover 12, the positioning glass beads 5 are extruded, and after rotating the corresponding number of turns to reach the required injection volume, the positioning glass beads 5 are re-clamped in the positioning grooves 22 to fix the rotated lower cover 12.

[0026] Working principle: in use, by rotating the lower cover 12 to adjust the injection amount, adjust the good through the positioning ball 5 re-card connection in the positioning groove 22, in order to fix the lower cover 12 after rotation, again through the locking assembly to press the push rod 3 extrusion main push spring 4 and then extrusion needle cylinder 7, and then extrusion release needle cylinder 7 in the storage of the drug, press the push rod 3 at the same time through the pressure bearing 8 effective support and transmission axial force, ensure the stability and stress balance of the push rod 3, facilitate the needle cylinder 7 in the storage of the drug to take out, release the push rod 3, main push spring 4 reset when push rod 3 and needle cylinder 7 disengaged complete medicine taking action.

[0027] It should be stated that the above specific embodiments only for the preferred embodiments of the present application and the use of technical principles. Those skilled in the art should understand that the present application can be made various modifications, equivalent replacement, changes, etc. However, as long as these changes do not deviate from the spirit of the present application, they should be within the scope of the present application. In addition, some terms used in the present application specification and claims are not limited, only for the convenience of description.

Claims

1. A syringe assisted push assembly, characterized by, The application relates to a syringe device, which comprises a shell (1), a sleeve (2) arranged in the shell (1), a push rod (3) slidingly arranged in the sleeve (2), a main push spring (4) sleeved on the push rod (3), a plurality of positioning glass beads (5) arranged on the shell (1), a plurality of rolling balls (6) clamped on the upper side of the sleeve (2), a needle cylinder (7) arranged at the bottom of the sleeve (2) in the shell (1), the plurality of positioning glass beads (5) being clamped with the sleeve (2), the push rod (3) extruding the main push spring (4) and further extruding the needle cylinder (7), and the main push spring (4) pushing the push rod (3) and the needle cylinder (7) to be separated when the main push spring (4) is reset.

2. The syringe assist push assembly of claim 1, wherein, The shell (1) comprises an upper cover (11), a lower cover (12) arranged at the bottom of the upper cover (11), a sealing cover (13) arranged at the bottom of the lower cover (12), three rows of through holes arranged around the center of the lower cover (12), a locking assembly arranged in the upper cover (11), a plurality of positioning glass beads (5) arranged on the upper side of the lower cover (12) at equal intervals, and the needle cylinder (7) being arranged in the sealing cover (13).

3. The syringe assist push assembly of claim 2, wherein, The sleeve (2) further comprises four mounting holes (21) arranged at equal intervals on the upper side of the sleeve (2) in a protruding mode, positioning grooves (22) arranged at the bottom of the mounting holes (21) on the sleeve (2), headless hexagonal screws (23) arranged in the mounting holes (21), the headless hexagonal screws (23) corresponding to the through holes, the plurality of positioning glass beads (5) corresponding to the positioning grooves (22), and the plurality of positioning glass beads (5) being clamped in the positioning grooves (22) on the inner sides.

4. The syringe assist push assembly of claim 2, wherein, The push rod (3) is provided with a pressure bearing (8) on the upper side and a gasket (9) on the lower side, the pressure bearing (8) is arranged in the protruding position on the upper side of the sleeve (2), and the gasket (9) is arranged in the lower cover (12).

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