CN213587193U

CN213587193U - Injection device

Info

Publication number: CN213587193U
Application number: CN202022134360.4U
Authority: CN
Inventors: 黄小林; 黄忠; 杨育凯; 李涛; 虞为; 林黑着
Original assignee: Shenzhen Test Base South China Sea Fisheries Research Institute Chinese Academy Of Fishery Sciences; South China Sea Fisheries Research Institute Chinese Academy Fishery Sciences
Current assignee: Shenzhen Test Base South China Sea Fisheries Research Institute Chinese Academy Of Fishery Sciences; South China Sea Fisheries Research Institute Chinese Academy Fishery Sciences
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-07-02
Anticipated expiration: 2030-09-25

Abstract

The utility model discloses an injection device, which is particularly suitable for fish induced spawning and ripening injection, and comprises an injection tube, wherein a piston and a piston rod are arranged in the injection tube, the piston and the injection tube are arranged in an interference fit manner, a closed cavity is formed in the injection tube, one end of the piston rod is connected with the piston, and the other end of the piston rod extends to the outside of the injection tube; the injection tube is characterized in that a threaded tube is sleeved on the piston rod, is provided with external threads and is matched with a dose adjusting nut, a rear cover is arranged at the leading-in end of the injection tube, the threaded tube penetrates through the rear cover, the dose adjusting nut is fixed on the outer side surface of the rear cover, an elastic piece is further sleeved on the threaded tube, one end of the elastic piece is fixed with the piston, and the other end of the elastic piece is fixed on the inner side surface of the rear cover; this device is through the length of stretching into of rotatory dose adjusting nut adjustment screwed pipe in the injection syringe, and the elastic component can be drawn back the piston automation after the completion of the injection, and it offsets to stretch into the end until piston and screwed pipe, when realizing the automatic replenishment of injection syringe medicament, accurate control medicine dose.

Description

Injection device

Technical Field

The utility model relates to the field of medical and hygienic products, in particular to an injection device.

Background

The artificial fish spawning induction technology is one of important measures for improving the yield of cultured fishes, artificial ripening and spawning induction are the most critical links in the artificial fish breeding technology, the ripening and spawning induction effects directly determine the success or failure of breeding, the types, dosage, injection methods and the like of used medicines are different according to fishes, the sensitivity of different fish species to the medicines is greatly different, and in the actual production operation, the traditional injectors are common disposable medical injectors.

SUMMERY OF THE UTILITY MODEL

For solving above-mentioned traditional syringe and accelerating maturity and hasten parturition in-process injection dosage in fish and be difficult to control, be difficult to guarantee to accelerate maturity and hasten parturition effect scheduling problem, the utility model provides an injection device.

An injection device comprises an injection tube, wherein a piston and a piston rod are arranged in the injection tube, the piston and the injection tube are arranged in an interference fit manner, a closed cavity is formed in the injection tube, one end of the piston rod is connected with the piston, and the other end of the piston rod extends to the outside of the injection tube;

the injection tube is characterized in that a threaded tube is sleeved on the piston rod, a threaded structure is arranged on the outer surface of the threaded tube, a dose adjusting nut matched with the threaded tube is further arranged on the threaded tube, a rear cover is arranged at the introduction end of the injection tube, the threaded tube penetrates through the rear cover, and the dose adjusting nut is fixed on the outer side surface of the rear cover; and an elastic piece is further sleeved on the threaded pipe, one end of the elastic piece is fixed with the piston, and the other end of the elastic piece is fixed on the inner side surface of the rear cover.

The threaded pipe and the dose adjusting nut are of screw rod structures matched with each other, the extension length of the threaded pipe in the injection pipe can be adjusted through the dose adjusting nut, the elastic piece can pull back the piston together with the piston rod after the device completes injection action until the threaded pipe is abutted against the piston, and therefore the medicine injection dose can be accurately controlled.

Specifically, the piston rod penetrates through the threaded pipe and extends to the outside of the injection pipe, the push handle is arranged at the tail end of the piston rod, and the piston rod and the threaded pipe are arranged in a sliding fit mode, so that the piston rod can be pushed and pulled independently to complete injection and liquid medicine supplement actions.

Specifically, the outer surface of the piston rod and the inner wall of the threaded pipe are provided with a sliding groove and a guide rail structure which are matched with each other, so that the threaded rod is prevented from synchronously rotating when the dosage adjusting nut rotates, the threaded pipe cannot adjust the stretching length of the threaded pipe in the injection pipe, and the smoothness and the stability of the injection and liquid medicine supplementing actions of the device are ensured.

As the utility model provides an injection device's an embodiment, this device is still including dress liquid pipe for the replenishment of temporary storage liquid medicine, the follow-up liquid medicine of being convenient for, dress liquid pipe with the components of a whole that can function independently structure, convenient to use more of assembling for can dismantling the injection syringe.

As an embodiment of an injection device, the dress liquid pipe with the syringe intercommunication sets up, the cooperation the pull back piston action of elastic component realizes the automatic replenishment of syringe liquid medicine, the dress liquid pipe with the intercommunication position of syringe still is provided with first check valve, realizes the one-way intercommunication of dress liquid pipe to the syringe direction, in the liquid medicine backward flow of syringe to dress liquid pipe when preventing injection operation.

As the utility model provides an injection device's an embodiment, the injection syringe is including the injection thin neck, be provided with the second check valve in the injection thin neck, prevent to inject to the internal liquid medicine of fish backward flow to the injection syringe in, cause the pollution in fish damage and the injection syringe intracavity.

As the utility model provides an injection device's an embodiment, the transfer line surface still matches thumb, forefinger and holds the position when the injection operation and be provided with thumb arch and forefinger arch, the convenience and the stability of holding when improving the injection.

As an embodiment of an injection device, injection syringe, dress liquid pipe all are provided with the scale sign, the manual observation adjustment of being convenient for more, cooperation screwed pipe, dose adjusting nut structure realize the accurate control of injection volume.

Advantageous effects

The injection device is particularly suitable for fish ripening and spawning induction, the threaded pipe and the dose adjusting nut are of screw rod structures matched with each other, the extending length of the threaded pipe in the injection pipe can be adjusted through the dose adjusting nut, and the stroke of the piston in the maximum injection pipe is effectively limited; the elastic piece can draw back the piston together with the piston rod after this device accomplishes the injection action, and until the piston offsets with the screwed pipe stretches into the end, realize the automatic replenishment of injection syringe liquid medicine, the effectual dose of replenishing the liquid medicine of restriction simultaneously, the realization is to the accurate control of injection dose, the length that the screwed pipe stretches into in the injection syringe is adjustable again for this device can be adjusted the maximum stroke of piston according to size, the article class of actual parent fish, and effectual assurance ripening and spawning induction effect, and the adaptability is stronger, and application scope is wider.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention:

FIG. 1 is a schematic view of the overall structure of the preferred embodiment of the present invention;

FIG. 2 is a schematic sectional view of the piston rod and the threaded pipe;

wherein:

syringe-100; injecting thin neck-110; a second check valve-111; thumb bulge-120; forefinger bulge-130; -140 rear cover;

a piston-200; a piston rod-210; a guide rail 211; a push handle-212; a threaded pipe-220; a chute-221; external threads-222; an elastic member-230; a dose adjustment nut-240;

liquid containing pipe-300; a first check valve-310.

Detailed Description

The following description of the preferred embodiments of the present invention will enable one skilled in the art to make and use the present invention as described below, and will more fully understand the innovative features and attendant advantages of the present invention.

As shown in fig. 1, which is a schematic structural diagram of a preferred embodiment of the present invention, the injection syringe 100 includes a syringe 100, a liquid containing tube 300 is further disposed on the syringe 100, a piston 200 and a piston rod 210 are further disposed inside the syringe 100, the piston 200 and the syringe 100 are in interference fit, a closed cavity is formed in the syringe 100, one end of the piston rod 210 is connected to the piston 200, and the other end of the piston rod extends to the outside of the syringe 100.

The injection tube comprises a piston rod 210, and is characterized in that a threaded tube 220 is sleeved on the piston rod 210, the threaded tube 220 is provided with uniform external threads 222, a dose adjusting nut 240 matched with the threaded tube 220 is further arranged on the threaded tube 220, the threaded tube 220 and the dose adjusting nut 240 are of screw rod structures matched with each other, a rear cover 140 is arranged at the leading-in end of the injection tube 100, the threaded tube 220 penetrates through the rear cover 140, the dose adjusting nut 240 is fixed on the outer side surface of the rear cover 140 and can rotate under the state of being attached to the rear cover 140, so that the threaded tube 220 is pushed or released, and the extending length of the threaded tube 220 in the injection tube 100 is adjusted.

The threaded tube 220 is further sleeved with an elastic member 230, the elastic member 230 is preferably but not limited to a spring, one end of the elastic member 230 is fixed to the piston 200, and the other end of the elastic member is fixed to the inner side surface of the rear cover 140.

Further, the piston rod 210 extends to the outside of the injection tube 100 through the threaded tube 220, and is provided with a push handle 212 at the end thereof, the piston rod 210 and the threaded tube 220 are in a sliding fit structure,

specifically, as shown in fig. 2, the outer surface of the piston rod 210 is provided with a guide rail 211, and the inner wall of the threaded pipe 220 is provided with a sliding groove 221 matched with the guide rail 211 in cooperation with the guide rail 211, but is not limited thereto; the arrangement of the guide rails 211 and the sliding grooves 221 makes the device smooth and stable in the actions of injecting and replenishing the liquid medicine, and prevents the threaded rod from synchronously rotating when the dose adjusting nut 240 rotates, so that the threaded tube 220 cannot adjust the extending length of the threaded tube in the injection tube 100.

This device is still including dress liquid pipe 300, dress liquid pipe 300 is used for temporary storage liquid medicine, the replenishment of the follow-up liquid medicine of being convenient for, dress liquid pipe 300 with syringe 100 is for dismantling the components of a whole that can function independently structure of assembling, more convenient to use.

The liquid containing tube 300 is communicated with the syringe 100, and is matched with the action of pulling back the piston 200 of the elastic element 230, so that the automatic replenishment of the liquid medicine of the syringe 100 can be realized, the communication position between the liquid containing tube 300 and the syringe 100 is also provided with a first check valve 310, so that the one-way communication of the liquid containing tube 300 to the direction of the syringe 100 is realized, and the liquid medicine in the syringe 100 is prevented from flowing back to the liquid containing tube 300 during the injection operation.

An injection thin neck 110110 is further arranged at one end, far away from the rear cover 140, of the injection pipe 100, a second check valve 111 is arranged in the injection thin neck 110, the second check valve 111 can effectively prevent liquid medicine injected into the fish body from flowing back into the injection pipe 100, and injection dosage is accurate during further ripening and spawning induction.

Furthermore, the surface of the infusion tube is also matched with the holding positions of a thumb and an index finger during injection operation, and a thumb bulge 120 and an index finger bulge 130 are arranged at the holding positions, so that the holding convenience and stability during injection are improved.

Further, syringe 100, dress liquid pipe 300 all are provided with the scale mark, and the manual observation adjustment of being convenient for more cooperates screwed pipe 220, dose adjusting nut 240 structure, realizes the accurate control of injection volume.

In the above-described preferred embodiment of the present invention, firstly, the length of the threaded tube 220 extending into the syringe 100 is adjusted by the screw rod structure of the threaded tube 220 and the dose adjusting nut 240, so as to effectively limit the maximum stroke of the piston 200 in the syringe 100; the elastic member 230 can pull back the piston 200 together with the piston rod 210 after the device completes the injection action until the piston 200 abuts against the extending end of the threaded tube 220, so that the automatic supplement of the liquid medicine of the injection tube 100 is realized, the dosage of the automatically supplemented liquid medicine is effectively limited, and the precise control of the injection dosage is realized; the problem that the injection tube 100 is difficult to absorb liquid medicine under stress in a slippery environment is solved, the use is convenient, and the practicability is stronger;

on the other hand, the check valve in the injection thin neck 110 can effectively prevent the medicine injected into the fish body from flowing back into the injection tube 100, further accurately control the injection dosage and improve the reliability of the device; the length that threaded tube 220 stretches into injection tube 100 is adjustable for this device can be according to the size of actual parent fish, the maximum stroke of article class to piston 200 makes the adjustment, and the effectual effect of hastening the mature induced spawning of guaranteeing, and the adaptability is stronger, and application scope is also wider.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the specific embodiments of the present invention be limited by these descriptions; to the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection.

Claims

1. An injection device comprises an injection tube, wherein a piston and a piston rod are arranged in the injection tube, the piston and the injection tube are arranged in an interference fit manner, a closed cavity is formed in the injection tube, one end of the piston rod is connected with the piston, and the other end of the piston rod extends to the outside of the injection tube;

the method is characterized in that: the injection tube is characterized in that a threaded tube is sleeved on the piston rod, a threaded structure is arranged on the outer surface of the threaded tube, a dose adjusting nut matched with the threaded tube is further arranged on the threaded tube, a rear cover is arranged at the introduction end of the injection tube, the threaded tube penetrates through the rear cover, and the dose adjusting nut is fixed on the outer side surface of the rear cover;

and an elastic piece is further sleeved on the threaded pipe, one end of the elastic piece is fixed with the piston, and the other end of the elastic piece is fixed on the inner side surface of the rear cover.

2. An injection device according to claim 1, wherein: specifically, the piston rod penetrates through the threaded pipe and extends to the outside of the injection pipe, a push handle is arranged at the tail end of the piston rod, and the piston rod is arranged in sliding fit with the threaded pipe.

3. An injection device according to claim 2, wherein: specifically, the outer surface of the piston rod and the inner wall of the threaded pipe are provided with a sliding groove and a guide rail structure which are matched with each other.

4. An injection device according to claim 1, wherein: the device also comprises a liquid containing pipe, wherein the liquid containing pipe and the injection pipe are of detachable and assembled split structures.

5. An injection device according to claim 4, wherein: the dress liquid pipe with the injection syringe intercommunication sets up, dress liquid pipe with the intercommunication position of injection syringe still is provided with first check valve, realizes the one-way intercommunication of dress liquid pipe to the injection syringe direction.

6. An injection device according to claim 1, wherein: the injection tube comprises an injection thin neck, and a second check valve is arranged in the injection thin neck.

7. An injection device according to claim 1, wherein: the surface of the injection tube is also provided with a thumb bulge and an index finger bulge which are matched with the holding positions of a thumb and an index finger during injection operation.

8. An injection device according to claim 1, wherein: the injection tube and the liquid containing tube are both provided with scale marks.