CN211797036U - Stomach filling device for rodent - Google Patents

Abstract

The utility model discloses a rodent is with irritating stomach ware, including the syringe body, the syringe body is including handheld portion and injection portion, it is provided with the push rod to slide in the handheld portion, the injection portion mark has the scale, the front end of push rod is provided with the piston, the piston activity sets up in the injection portion, the rear end of push rod is provided with the end cover, the front end of injection portion is provided with the adaptation mouth, adaptation mouth cartridge has the syringe needle, the top of syringe needle is provided with the protection ball, the inside bend of protection ball is endocyst globular, be provided with the transfer line with the syringe needle intercommunication in the protection ball, and the export of transfer line is located the upper end of protection ball.

Description

Stomach filling device for rodent

Technical Field

The utility model relates to a medical science research animal body experimental apparatus technical field especially relates to a rodent is with irritating stomach ware.

Background

With the continuous development of biomedicine and pharmaceutical technology, animal experiments have become an essential basic experimental method for biology and medicine. All new drugs or synthetic materials must go through animal experiments to verify their efficacy and safety before entering the clinic. Oral administration is the most convenient and fast administration method, and in animal experiments, oral administration is usually realized by means of gavage. Gavage is one of the most common modes of oral administration in experimental animals and it aids in the pharmacodynamic, pharmacological and toxicological studies of some oral drugs.

At present, the animal gavage generally uses a syringe needle, the front end of the syringe needle is sharp, the syringe needle is suitable for subcutaneous or intravenous injection, and the digestive tract of the animal is easy to stab when the syringe needle is used, so that the animal dies. The stomach irrigator developed in the market at present is a specially-made hollow needle with a standard syringe interface, and the hollow needle is a stainless steel needle with a straight and blunt and round needle head. Although above-mentioned passivation straight ball shape steel needle can be to a certain extent, avoid pricking trachea or injury alimentary canal scheduling problem that ordinary needle point operation brought, can discover when the operation, straight syringe needle in case supports the alimentary canal, hinders the needle track, then can make the medicine inject can not, probably arouse esophagus pipe wall damage by the pumpback even. In addition, in the real experimental operation process, blind insertion is mostly adopted, and meanwhile, the animal is easy to twist and escape, and the gastric lavage needle often has the condition of mistakenly entering the trachea, so that airway injury is caused, even mice die, and the experience and hand feeling of an operator become the key factors of success and failure of the experiment to a great extent.

SUMMERY OF THE UTILITY MODEL

In order to solve the defects of the prior art, the stomach irrigator for the rodent is provided, and the internal tissues of an experimental animal are not easy to be damaged when the stomach irrigator is used for performing stomach irrigation injection so as to improve the success rate of the experiment.

For realizing the utility model aims at providing a pair of rodent is with irritating stomach ware, including the syringe body, the syringe body is including handheld portion and injection portion, it is provided with the push rod to slide in the handheld portion, the injection portion mark has the scale, the front end of push rod is provided with the piston, the piston activity sets up in the injection portion, the rear end of push rod is provided with the end cover, the front end of injection portion is provided with the adaptation mouth, adaptation mouth cartridge has the syringe needle, the top of syringe needle is provided with the protection ball, the inside bend of protection ball is endocyst globular, be provided with the transfer line with the syringe needle intercommunication in the protection ball, and the export of transfer line is located the upper end of protection ball.

As a further improvement of the above scheme, a protective sleeve is movably sleeved on the injection needle, and the diameter of the protective sleeve is smaller than that of the protective ball.

As a further improvement of the scheme, the adapting port is provided with a projection used for clamping, and the tail end of the injection needle is provided with a groove matched with the projection.

As a further improvement of the above scheme, an annular clamping groove is arranged in the end of the injection needle, the annular clamping groove is provided with a channel communicated with the groove, and the width of the channel is the same as that of the projection.

As a further improvement of the above scheme, a middle rotating wheel and a driving wheel are arranged in the syringe body, the push rod penetrates out of the driving wheel, a push block is arranged at the end of the push rod, the driving wheel and the middle rotating wheel are in meshing transmission, a rack is arranged in the syringe body corresponding to the middle rotating wheel, the rack penetrates out of the push block, a butting block is arranged in the middle of the rack, and the tail end of the rack is connected with a piston.

As a further improvement of the above scheme, a spring is arranged in the hand-held part, and the abutting block is larger than the diameter of the spring.

As a further improvement of the scheme, the end cover is provided with an arc-shaped groove.

As a further improvement of the scheme, the two sides of the hand-held part are respectively provided with a four-finger holding groove and an impact cushion.

The utility model has the advantages that:

compared with the prior art, the utility model provides a stomach filling device for rodent, sheathes the protective sleeve on the pinhead of syringe needle, when preventing to operate the needle, the experimental animal bites the syringe needle, makes the needle of inserting hinder (when inserting the needle, protective sleeve slips to the outside of the pinhead, even the experimental animal bites the protective sleeve, the syringe needle still can freely pass in and out); and the top end of the injection needle is provided with a protective ball, a transfusion tube communicated with the injection needle is arranged in the protective ball, and the needle tip of the needle during the needle insertion is prevented from abutting against the wall of the digestive tract or the wall of the trachea, so that the tissue of the tract is damaged, whether the gastric perfusion is successful or not is judged, and the tissue of the tract wall is damaged when gastric juice is pumped. The utility model provides a pair of rodent is with irritate stomach ware when carrying out the gavage injection, difficult damage experimental animals internal tissue can improve the experiment success rate.

Drawings

The following detailed description of embodiments of the invention is provided in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic structural view of a syringe body of the present invention;

fig. 2 is a schematic view of the transmission structure of the transfer wheel, the driving wheel and the rack of the present invention;

fig. 3 is a schematic structural view of the injection needle of the present invention;

fig. 4 is an internal schematic view of the injection needle of the present invention.

Detailed Description

As shown in fig. 1-4, the utility model discloses a stomach filling device for rodent, including syringe body 100, syringe body 100 is including handheld portion 101 and injection portion 102, slides in handheld portion 101 and is provided with push rod 1, and injection portion 102 marks has the scale, even single-handed operation, can not cover the syringe scale yet. The front end of push rod 1 is provided with piston 2, the activity of piston 2 sets up in injection part 102, the rear end of push rod 1 is provided with end cover 3, the front end of injection part 102 is provided with the adaptation mouth, adaptation mouth cartridge has syringe needle 4, the top of syringe needle 4 is provided with protection ball 5, protection ball 5 incurves and is endocyst globular, be provided with the transfer line 6 with 4 intercommunications of syringe needle in the protection ball 5, and the export of transfer line 6 is located the upper end of protection ball 5, movable sleeve is equipped with protective case 7 on the syringe needle 4, and protective case 7's diameter is less than protective ball 5's diameter.

When the needle is inserted, the protective sleeve 7 slides to the outside of the needle head and is positioned above the protective ball 5, and the injection needle 4 can still freely enter and exit even if the experimental animal bites the protective sleeve 7. The problem that the needle is blocked after the common needle tube is bitten by the experimental animal is avoided.

The protective ball 5 is inwards bent to be in an inner bag ball shape, the infusion tube 6 communicated with the injection needle 4 is arranged in the protective ball 5, the outlet of the infusion tube 6 is located at the upper end of the protective ball 5, the problem that the digestive tract wall is damaged by gastric lavage can be prevented, the problem that the experimental animal is damaged by mistakenly inserting the trachea can be prevented, and the operation can be continued even if the trachea is mistakenly inserted. Simultaneously in order to judge whether the intubate goes into the stomach, whether succeed, suction syringe needle 4 observes and has or not the gastric juice to separate out, the utility model discloses a protection ball 5 can avoid the stomach wall damage that its suction arouses.

The utility model discloses well adaptation mouth is provided with the lug that is used for clamping, and the end of syringe needle 4 is provided with lug complex recess, clamps syringe needle 4 to the adaptation mouth through recess, lug cooperation.

Further improve, the terminal inside of syringe needle 4 is provided with ring groove, ring groove is provided with the passageway with the recess intercommunication, and the width of passageway is the same with the lug, and when 4 cartridges of syringe needle, the lug is advanced to go into the recess, and the reentrant ring groove can rotate the lug along ring groove for 4 relative injection portions 102 of syringe needle are rotatory, and ring groove plays the purpose that prevents syringe needle 4 and drop.

The improved structure is characterized in that a middle rotating wheel 8 and a driving wheel 9 are arranged in a syringe body 100, a push rod 1 penetrates out of the driving wheel 9, a push block 10 is arranged at the end of the push rod, the driving wheel 9 is in meshed transmission with the middle rotating wheel 8, a rack 11 is arranged in the syringe body 100 corresponding to the middle rotating wheel 8, the rack 11 penetrates out of the push block 10 and can slide up and down along the push block 10, a butting block 12 is arranged in the middle of the rack 11, the tail end of the rack 11 is connected with a piston 2, when the syringe is used, the driving wheel 9 and the middle rotating wheel 8 are sequentially driven to rotate by rotating the push rod 1, force is transmitted to the rack 11, and the rack 11 moves up and down relative to the push block 10, so that the position. The influence on the experimental result caused by the inaccurate dosage in the operation process can be avoided by depending on the maximum range adjustment.

Further improve, be provided with spring 13 in the handheld portion 101, butt piece 12 is greater than the diameter of spring 13, when push rod 1 pushes down and annotates the liquid, acts on butt piece 12 through ejector pad 10, and compression spring 13 goes out liquid injection, sets up the effect of spring 13, when preventing not atress, because push rod 1 self gravity annotates the liquid.

Further improved, an arc-shaped groove is arranged on the end cover 3. The surface of the arc-shaped groove is provided with a rubber arc surface suitable for being pressed by a thumb, and the rubber arc surface is matched with the thumb.

Further improved, the two sides of the hand-held part 101 are respectively provided with a four-finger holding groove 14 and an impact cushion 15, so that the phenomenon that the holding is not firm and skids in the operation process to influence the liquid feeding accuracy is avoided.

The injection needle 4 of the utility model is made of medical flexible material and is internally provided with a memory hollow guide wire with better plasticity.

The injection needle 4 is made of stainless steel and can be repeatedly sterilized and used.

The above embodiments are not limited to the technical solutions of the embodiments themselves, and the embodiments may be combined with each other into a new embodiment. The above embodiments are only used for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention should be covered by the scope of the technical solutions of the present invention.

Claims (8)

1. The utility model provides a rodent is with irritating stomach ware, including syringe body, syringe body is including handheld portion and injection portion, it is provided with the push rod to slide in the handheld portion, injection portion marks has the scale, the front end of push rod is provided with the piston, the piston activity sets up in the injection portion, the rear end of push rod is provided with end cover, its characterized in that: the front end of injection portion is provided with the adaptation mouth, adaptation mouth cartridge has the syringe needle, the top of syringe needle is provided with the protection ball, the inside bending of protection ball is the endocyst globular, be provided with the transfer line with the syringe needle intercommunication in the protection ball, and the export of transfer line is located the upper end of protection ball.

2. The rodent gastric lavage device of claim 1 further comprising: a protective sleeve is movably sleeved on the injection needle, and the diameter of the protective sleeve is smaller than that of the protective ball.

3. The rodent gastric lavage device of claim 1 further comprising: the adapting port is provided with a convex block for clamping, and the tail end of the injection needle is provided with a groove matched with the convex block.

4. The rodent gastric lavage device of claim 3 in which: an annular clamping groove is formed in the tail end of the injection needle, a channel communicated with the groove is formed in the annular clamping groove, and the width of the channel is the same as that of the bump.

5. The rodent gastric lavage device of claim 1 further comprising: the needle cylinder is characterized in that a middle rotating wheel and a driving wheel are arranged in the needle cylinder body, the push rod penetrates out of the driving wheel, a push block is arranged at the end of the push rod, the driving wheel is in meshing transmission with the middle rotating wheel, a rack is arranged in the needle cylinder body corresponding to the middle rotating wheel, the rack penetrates out of the push block, a butt joint block is arranged in the middle of the rack, and the tail end of the rack is connected with a piston.

6. The rodent gastric lavage device of claim 5 further comprising: a spring is arranged in the handheld portion, and the abutting block is larger than the diameter of the spring.

7. The rodent gastric lavage device of claim 1 further comprising: the end cover is provided with an arc-shaped groove.

8. The rodent gastric lavage device of claim 1 further comprising: the two sides of the hand-held part are respectively provided with a four-finger holding groove and an applying buffer pad.

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