CN219331723U - Experimental animal body fluid collection needle structure - Google Patents

Abstract

The utility model discloses a body fluid collecting needle structure of an experimental animal, which is provided with a throttling structure on a needle seat, so that an operation unit is conveniently pressed when the collecting needle is inserted, a throttling piece is further extruded, and a circulation channel in the throttling piece is further plugged; when the collecting needle is required to be pulled out, the palm of an experimenter presses the operation unit, the throttling piece is further extruded, and then the circulation channel in the throttling piece is blocked, so that the outflow of body fluid can be avoided in the working procedures of inserting the collecting needle and pulling out the collecting needle, the collection amount of the body fluid is accurately controlled, and excessive damage to animals and pollution to a body fluid sample are avoided; in addition, through being provided with first conical surface at the inner wall of the connecting portion of needle file, be provided with the second conical surface at the outer wall of the grafting portion of connecting the pipe head, through the cooperation of first conical surface and second conical surface, can be more firm with gathering the needle and be connected with the pipe head, and convenient operation is swift.

Description

Experimental animal body fluid collection needle structure

Technical Field

The utility model relates to the field of animal experiment instruments, in particular to an experimental animal body fluid collection needle structure.

Background

The experimental animal, namely the mice, is a common experimental object in biological experiments or medical experiments, in biological experiments, the body fluid of the experimental animal is required to be extracted for laboratory detection, the body fluid of the animal contains detection markers related to experiments, such as the PH value of urine, whether the urine contains excessive red blood cells, white blood cells, small epithelial cells and the like, are all important indexes in clinical diagnosis and treatment, when the body fluid of the animal is sampled, a collecting needle is required to be inserted into the body of the animal for sampling, but when the target position is not completely found, part of the body fluid sometimes seeps out from the collecting needle, and after the collection is completed, the body fluid is not required any more, but in the needle pulling operation, because fixed auxiliary materials such as adhesive tapes are required to be removed, the redundant body fluid flows out in the needle pulling process, so that the body fluid collection amount cannot be accurately controlled, the collecting needle capable of accurately controlling the body fluid collection amount is required, and thus the accurate body fluid collection is satisfied, the operation is convenient, and the body fluid collection efficiency is high.

Disclosure of Invention

The utility model aims at solving the problems of the prior art and provides an experimental animal body fluid collection needle structure which is accurate in control, high in collection efficiency and convenient to operate.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a laboratory animal body fluid collection needle structure, this collection needle includes syringe needle, needle file, connecting pipe head, and the syringe needle is pegged graft in the top of needle file, and the bottom and the connecting pipe head sealing connection of needle file are provided with throttling structure on the needle file, and throttling structure includes operating unit and throttling piece, and operating unit rotatable setting is on the outer wall of needle file, and throttling piece sets up in the inside cavity of needle file, and when operating unit rotated extrusion throttling piece, throttling piece shutoff throttling piece's circulation passageway; the bottom of needle file is provided with connecting portion, and connecting portion's inner wall is provided with first conical surface, and connecting tube head's upper end is provided with grafting portion, and grafting portion's outer wall is provided with the second conical surface.

Through the technical scheme, the experimental animal body fluid collection needle structure is provided with the throttling structure on the needle seat, through the operation of the throttling structure, the operation unit is conveniently pressed when the collection needle is inserted, the throttling piece is further extruded, and then the circulation channel in the throttling piece is blocked, and likewise, when the collection needle is required to be pulled out, the palm of an experimenter presses the operation unit while the collection needle is pulled out, the throttling piece is further extruded, and then the circulation channel in the throttling piece is blocked, so that the outflow of body fluid can be avoided in the procedures of inserting the collection needle and pulling out the collection needle, the body fluid collection amount is accurately controlled, and excessive damage to animals and body fluid sample pollution are avoided; in addition, through being provided with first conical surface at the inner wall of the connecting portion of needle file, be provided with the second conical surface at the outer wall of the grafting portion of connecting the pipe head, through the cooperation of first conical surface and second conical surface, can be more firm with gathering the needle and be connected with the pipe head, and convenient operation is swift.

As a further improvement to the above solution, the throttle element is provided as a throttle ball, the middle part of which is provided with a flow channel.

As a further improvement to the technical scheme, the operation unit comprises a pressing part, a rotating shaft and a torsion spring, wherein the rotating shaft is rotatably arranged on the outer wall of the needle seat through the torsion spring, and the pressing part is fixedly connected to the rotating shaft.

As a further improvement to the technical scheme, the throttle ball is made of rubber materials.

As a further improvement to the technical scheme, at least one groove is formed in the inner wall of the connecting portion, and at least one positioning protrusion is formed in the outer wall of the plug-in portion.

As a further improvement to the technical scheme, the needle seat is made of elastic materials.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the experimental animal body fluid collection needle structure, the throttle structure is arranged on the needle seat, through the arrangement of the throttle structure, when the collection needle is inserted, the operation unit is conveniently pressed, the throttle piece is further extruded, and then the circulation channel in the throttle piece is plugged, and when the collection needle is required to be pulled out, the palm of an experimenter presses the operation unit while the collection needle is pulled out, so that the throttle piece is further extruded, and then the circulation channel in the throttle piece is plugged, the outflow of body fluid can be avoided in the procedures of inserting the collection needle and pulling out the collection needle, the body fluid collection amount is accurately controlled, and excessive damage to animals and body fluid sample pollution are avoided;

(2) Through being provided with first conical surface at the inner wall of the connecting portion of needle file, be provided with the second conical surface at the outer wall of the grafting portion of connecting pipe head, through the cooperation of first conical surface and second conical surface, can be more firm with gathering the needle and be connected with connecting pipe head, and convenient operation is swift.

Drawings

FIG. 1 is a schematic diagram of the structure of a body fluid collection needle for an experimental animal in the present embodiment;

FIG. 2 is a schematic diagram of an enlarged structure at A in FIG. 1;

FIG. 3 is a schematic view of another connecting tube head in the present embodiment;

fig. 4 is a schematic view of another needle holder in this embodiment;

in the figure: 1. a connecting tube head; 2. a plug-in part; 3. a needle stand; 4. a needle; 5. a flow channel; 6. a rotating shaft; 7. a pressing part; 8. a throttle ball; 9. a connection part; 10. pressing the step; 11. a torsion spring; 12. positioning the bulge; 13. and positioning grooves.

Detailed Description

The following description of the embodiments of the present utility model will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by one of ordinary skill in the art without undue burden on the person of ordinary skill in the art based on embodiments of the present utility model, are within the scope of the present utility model.

The embodiment provides a structure of a body fluid collecting needle for experimental animals, as shown in fig. 1-4, the collecting needle comprises a needle head 4, a needle seat 3 and a connecting tube head 1, the needle head 4 is inserted in a channel at the top end of the needle seat 3, the bottom end of the needle seat 3 is connected with the connecting tube head 1 in a sealing way, a throttling structure is arranged on the needle seat 3, the throttling structure comprises an operation unit and a throttling piece, the operation unit is rotatably arranged on the outer wall of the needle seat, the throttling piece is arranged in an inner cavity of the needle seat 3, and when the operation unit rotates to squeeze the throttling piece, the throttling piece plugs a circulation channel 5 of the throttling piece; the bottom end of the needle seat 3 is provided with a connecting part 9, the inner wall of the connecting part 9 is provided with a first conical surface, the upper end of the connecting tube head 1 is provided with a plug-in part 2, and the outer wall of the plug-in part is provided with a second conical surface; the other end of the connecting tube head 1 is connected with a flow guide tube, and collected body fluid is introduced into a test tube or a negative pressure test tube through the flow guide tube.

When the experimenter inserts the collection needle to experimental animal, at the same time that the experimenter inserts the collection needle to experimental animal, the palm of experimenter presses the operation unit, further extrudees the throttling element, and then the circulation passageway in the shutoff throttling element, equally, when needs extract the collection needle, when carrying out the operation of extracting the collection needle, the palm of experimenter presses the operation unit, further extrudees the throttling element, and then the circulation passageway in the shutoff throttling element, can realize avoiding the outflow of body fluid in the process of inserting the collection needle and extracting the collection needle, and then the volume of accurate control body fluid collection is well avoided causing excessive injury and body fluid sample to the animal to pollute.

Through setting into the conical surface at the inner wall of the connecting portion 9 of needle file 3, set into the conical surface at the outer wall of the grafting portion 2 of connecting tube head 1, when the grafting portion 2 of connecting tube head 1 inserts the connecting portion 9 of needle file 3, mutually support between two conical surfaces, can be more firm with gathering needle and connecting tube head connection, and convenient operation is swift when sealed effectual.

For more specific description of the above technical solution, as shown in fig. 1, the throttling element may be configured as a throttle ball 8, and a circulation channel 5 is penetratingly formed in the middle portion of the throttle ball 8, and the body fluid collected by the needle 4 flows into the flow guide tube through the circulation channel 5.

More specifically, as shown in fig. 2, the operation unit includes pressing portion 7, pivot 6 and torsional spring 11, the cover is equipped with torsional spring 11 on pivot 6, pivot 6 rotationally sets up in the outer wall forehead standing groove of needle file 3, pressing portion 7 fixed connection is in the one end of pivot 6, pressing portion 7's tip is provided with presses step 10, through pressing step 10's setting, make things convenient for experimenter's finger or palm to pressing portion 7's operation, and then improve the efficiency of operation, and further, can be provided with the anti-skidding line of increase friction on pressing step 10, further improve stability and the security of operation.

In some embodiments, in order to improve the response sensitivity of the throttle ball 8, the throttle ball 8 may be made of a rubber material, so that when the throttle ball 8 is extruded, the throttle ball 8 is easier to deform, and the flow channel in the throttle ball 8 is blocked; more specifically, the needle holder 3 may be made of an elastic material, for example, a rubber material or a modified resin material having elasticity, so that the pressing effect on the throttle ball 8 may be further improved.

In some embodiments, in order to improve the connection tightness between the connector head 1 and the needle holder 3, as shown in fig. 3 to 4, two circles of positioning grooves 13 may be provided on the inner wall of the connection part 9, and similarly, two circles of positioning protrusions 12 may be provided on the outer wall of the insertion part 2, so that the connection strength and tightness between the connector head 1 and the needle holder 3 may be enhanced when the connector head 1 is inserted into the needle holder 3.

Through the arrangement of the throttling structure, the body fluid is conveniently collected by inserting the collection needle into an experimental animal (such as a mice), when an experimenter sends the collection needle into the experimental animal body, the experimenter can squeeze the operation unit by fingers or palms of the experimenter, further squeeze the throttling part, further block the circulation channel in the throttling part, avoid the body fluid from flowing out when the collection needle is not sent to an accurate position, and release the squeezing of the operation unit after the collection needle is sent to an ideal position, so that the body fluid can smoothly flow out; similarly, when the collection needle is required to be pulled out, an operator presses the operation unit by the fingers or the palm of an experimenter while pulling out the collection needle, so that the throttling piece is further extruded, a circulation channel in the throttling piece is further plugged, the outflow of body fluid can be avoided in the working procedures of inserting the collection needle and pulling out the collection needle, the collection amount of the body fluid is accurately controlled, and excessive damage to animals and pollution to a body fluid sample are avoided;

although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides an experimental animal body fluid collection needle structure, collection needle includes syringe needle, needle file, connecting pipe head, the syringe needle peg graft in the top of needle file, the bottom of needle file with connecting pipe head sealing connection, its characterized in that is provided with throttle structure on the needle file, throttle structure includes operating unit and throttling element, operating unit rotatable setting is in on the outer wall of needle file, throttling element sets up in the inside cavity of needle file, when operating unit rotates and extrudees throttling element, throttling element shutoff throttling element's circulation passageway; the bottom of needle file is provided with connecting portion, connecting portion's inner wall is provided with first conical surface, connecting tube head's upper end is provided with grafting portion, grafting portion's outer wall is provided with the second conical surface.

2. The laboratory animal body fluid collection needle structure according to claim 1, wherein the throttle member is provided as a throttle ball, and a flow passage is provided in a middle portion of the throttle ball.

3. The laboratory animal body fluid collection needle structure according to claim 2, wherein the operation unit comprises a pressing part, a rotating shaft and a torsion spring, the rotating shaft is rotatably mounted on the outer wall of the needle seat through the torsion spring, and the pressing part is fixedly connected to the rotating shaft.

4. A laboratory animal body fluid collection needle structure according to claim 3, wherein the throttle ball is made of rubber material.

5. The laboratory animal body fluid collection needle structure according to claim 1, wherein at least one groove is formed in the inner wall of the connecting portion, and at least one positioning protrusion is formed in the outer wall of the inserting portion.

6. The laboratory animal body fluid collection needle structure according to claim 2, wherein the needle seat is made of an elastic material.

Images