CN210990323U

CN210990323U - Biomedical experiment blood taking device

Info

Publication number: CN210990323U
Application number: CN201920192380.1U
Authority: CN
Inventors: 冯莉雅
Original assignee: Longdong University
Current assignee: Longdong University
Priority date: 2019-02-12
Filing date: 2019-02-12
Publication date: 2020-07-14
Anticipated expiration: 2029-02-12

Abstract

The utility model relates to the technical field of biomedical experimental equipment, in particular to a biomedical experimental blood sampling device, which comprises a plurality of suction devices, a buffer chamber, a guide rod and an injector, wherein the suction devices are formed by sleeving a plurality of suction pipes with the diameters and the lengths arranged from small to large, the suction pipe with the smallest diameter is positioned at the top, the suction pipe with the largest diameter is fixedly connected with the buffer chamber, and all the suction pipes are communicated with the buffer chamber and the injector; the inner wall of the suction pipe is fixedly provided with pull rings, the pull ring arranged in the suction pipe with the smallest diameter is fixedly connected with one end of the guide rod, and the guide rod penetrates through the pull rings arranged on the rest sleeved suction pipes and the elastic sealing plug from top to bottom. The utility model discloses not only can be applicable to the different methods of getting blood to need not the people and press living body heart and just can realize the blood extraction according to the thing.

Description

Biomedical experiment blood taking device

Technical Field

The utility model relates to a biomedical experimental device technical field is biomedical experiment device of getting blood particularly.

Background

Biomedicine is a subject established on the basis of a laboratory, and an experiment is a theoretical supplement and plays an irreplaceable role in improving the practical ability, the analytical ability and the problem solving ability of students. While biomedicine is often supported by medical experiments on living bodies (such as rabbits or mice) and by analyzing and studying the obtained blood to obtain data.

The blood taking method in the prior art comprises the following steps: the tail is cut to obtain blood, the eyeball is removed to obtain blood, the heart is cut off to obtain blood, the head is cut off to obtain blood and the orbital venous plexus is used for obtaining blood, aiming at different blood obtaining modes, a worker needs test tubes or centrifuge tubes with different calibers to be connected, and blood is overflowed because a device with a proper caliber cannot be found in the connection process; moreover, the requirement of blood volume is often met by pressing the heart of the living body by human beings, so that the operation is scientific and normative, and the biological experiment is humanized.

To the problem, the utility model designs a not only can be applicable to the different methods of getting blood to need not the people and press the biomedical experiment blood device that the living body heart just can realize the blood extraction according to the thing.

SUMMERY OF THE UTILITY MODEL

The technique that exists is not enough to the aforesaid, the utility model aims at providing a biomedical experiment device of getting blood not only can be applicable to the different methods of getting blood to need not the people and press the live body heart according to the thing and just can realize the blood extraction.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the biomedical experimental blood taking device comprises an aspirator, a buffer cavity, a guide rod and an injector, wherein the aspirator is formed by sleeving a plurality of suction pipes with diameters and lengths arranged from small to large, every two adjacent suction pipes are mutually connected through a limiting device for limiting the positions of the suction pipes, the suction pipe with the smallest diameter is positioned at the top, the top of the suction pipe positioned at the top is detachably and hermetically connected with a needle head through a first double-pipe, the suction pipe with the largest diameter is fixedly connected with the buffer cavity, all the suction pipes are communicated with the buffer cavity, one end of the buffer cavity, far away from the suction pipe, is communicated with the injector, and the head of the injector is detachably and hermetically connected with the buffer cavity; the guide rod is connected in the buffer cavity and the insides of all the suction pipes in a penetrating manner, the inner wall of each suction pipe is fixedly provided with a pulling ring, and the pulling ring in the suction pipe with the smallest diameter is fixedly connected with one end of the guide rod; the bottom of buffer chamber is provided with the cross-under hole, be provided with the elasticity sealing plug in the cross-under hole, the guide bar passes from top to bottom all pull ring and the elasticity sealing plug that set up on the suction tube, and make the suction tube can reciprocate.

Preferably, the limiting device comprises a groove and a plurality of fixing blocks, the fixing blocks and the groove are both hemispherical, in every two adjacent suction pipes, the groove is formed in the inner side wall of the suction pipe with the large diameter, the fixing blocks are arranged on the outer side wall of the suction pipe with the small diameter, the fixing blocks can be clamped in the groove and can slide in the groove after the pull ring is pulled;

the sealing ring is arranged between the adjacent suction pipes, the middle position of the suction pipe with small diameter is sleeved with the sealing ring, the sealing ring is a rubber ring, and the push rod head of the sealing ring injector is the same and can move along with the movement of the suction pipe 4 under the action of external force, but has certain sealing property.

Preferably, the fixing block is arranged at the top of the outer side wall of each suction pipe.

Preferably, the grooves are formed at the top and bottom of the inner side wall of each suction pipe.

Preferably, all the drawing rings in the suction pipe are positioned on the same straight line.

Preferably, the suction tube with the smaller diameter of the two adjacent suction tubes can be completely inserted into the suction tube with the larger diameter.

Preferably, the syringe is detachably connected with the buffer cavity through a second double-way pipe.

Preferably, the diameter of the pull-out ring is 1/3-1/8 of the suction tube.

Preferably, a handle is connected to one end of the guide rod close to the elastic sealing plug.

Preferably, the suction tube, the pull ring, the guide rod and the buffer cavity are all made of hard transparent silica gel.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

1. the blood taking method in the prior art comprises the following steps: cut the tail and get blood, remove the eyeball and get blood, the heart gets blood, the broken head gets blood and orbital vein plexus gets blood, need get blood to afterbody, orbital part, heart department and artery department in these methods, the utility model discloses can realize getting the demand of blood device to different bores through adjusting the guide bar, then set up the bore of the suction tube that is greater than living body opening width or set up the syringe needle, then get blood.

2. The utility model discloses be provided with the syringe, the syringe is in the pull, because compare with the external world in its cavity and formed the negative pressure, consequently blood can be by the internal quilt of living body in to the syringe, and syringe and cushion chamber be for dismantling sealing connection, can reach the purpose that powerful negative pressure comes the suction blood through changing the syringe, consequently need not the people and presses the thing pressure living body.

Drawings

FIG. 1 is a schematic view of the whole device of the blood sampling device for biomedical experiments of the present invention;

fig. 2 is a sectional view of the limiting device of the biomedical experimental blood sampling device of the utility model.

Description of reference numerals:

1. a buffer chamber; 2. a guide bar; 3. an injector; 4. a suction tube; 5. a needle head; 6. pulling the pull ring; 7. an elastic sealing plug; 8. a handle; 9. a first double-pipe; 10. a groove; 11. and (5) fixing blocks.

Detailed Description

The following description of the preferred embodiments and the accompanying fig. 1-2 will be made in conjunction with the accompanying drawings of the embodiments of the present invention.

The biomedical experiment blood taking device comprises an aspirator, a buffer chamber 1, a guide rod 2 and a syringe 3, wherein the aspirator is formed by sleeving a plurality of suction tubes 4 with diameters and lengths which are arranged from small to large, every two adjacent suction tubes 4 are connected with each other through a limiting device for limiting the positions of the suction tubes 4, the suction tube 4 with the smallest diameter is positioned at the top, the top of the suction tube 4 positioned at the top is detachably and hermetically connected with a needle head 5 through a first double-tube 9, no gap exists between the needle head 5 and the suction tube 4, the suction tube 4 with the largest diameter is fixedly connected with the buffer chamber 1, all the suction tubes 4 are in through connection with the buffer chamber 1, one end of the buffer chamber 1 far away from the suction tube 4 is communicated with the syringe 3, and the head of the syringe 3 is detachably and hermetically connected with the buffer chamber 1, a gap is not formed between the head of the injector 3 and the buffer cavity 1; the guide rod 2 is connected in the buffer cavity 1 and all the suction pipes 4 in a penetrating manner, the inner wall of each suction pipe 4 is fixedly provided with a pull-out ring 6, and the pull-out ring 6 in the suction pipe 4 with the smallest diameter is fixedly connected with one end of the guide rod 2; the bottom of buffer chamber 1 is provided with the cross-under hole, be provided with elastic sealing plug 7 in the cross-under hole, guide bar 2 passes from top to bottom all pull ring 6 that sets up on the suction tube 4 reaches elastic sealing plug 7, and elastic sealing plug 7 not only has elasticity, has certain adhesive force moreover, consequently has sealed effect to the cross-under hole, and makes suction tube 4 can reciprocate.

The utility model discloses when using, if need carry on the heart and get blood or during the blood is got to orbital venous plexus, then get blood through syringe needle 5, expose by the top of supreme 8 suction tubes 4 that promote handle to the diameter is minimum down, be connected syringe needle 5 and the minimum suction tube 4 of diameter, pierce the district of drawing blood with the syringe needle, extract blood through syringe 3.

If need cut the tail and get blood, remove the eyeball and get blood or when the broken end got blood, then need adjust the bore of getting the blood device according to the size that the live body edge of a knife was seted up, promote handle 8 from top to bottom, in making two adjacent suction tubes 4, the bottom of the suction tube 4 that the diameter is less can the butt on the pull ring 6 that the diameter is great, analogize to this, the suction tube 4 that the diameter is less relatively overlaps in proper order in the suction tube 4 that the diameter is relatively great, thereby realized the suction tube 4 of different bores, when the bore of the suction tube 4 that sets up is greater than the live body edge of a knife, then support the top of suction tube 4 at the edge of a knife department and cover the edge of a knife, pull syringe 3, make blood be inhaled to in buffer chamber 1 and syringe 3 through the suction.

Stop device includes recess 10 and a plurality of fixed block 11, fixed block 11 with recess 10 is the hemisphere, and the hemisphere fixed block can be when the push-and-pull guide bar hard, by the marginal slippage of hemisphere to realized reciprocating, when not giving the guide bar hard, then the fixed joint of hemisphere fixed block is fixed in recess 10, the extraction of the blood of being convenient for. Every adjacent two in the suction tube 4, recess 10 sets up in the diameter is big on the inside wall of suction tube 4, fixed block 11 sets up in the diameter is little on the lateral wall of suction tube 4, fixed block 11 can the joint be in the recess 10, and can be in the pulling pull ring 6 back by recess 10 is internal-sliding.

Adjacent be provided with the sealing washer between the suction tube 4, just the sealing washer cover is established middle part position on the suction tube 4 that the diameter is little, the sealing washer is the rubber circle, and this sealing washer syringe's push rod head is the same, can move along with the removal of suction tube 4 under the effect of external force, but has certain leakproofness. The purpose is not to cause the drawing of a large amount of air due to poor sealing performance during the suction, thereby influencing the blood drawing.

The utility model discloses every the top of the lateral wall of suction tube 4 is provided with fixed block 11, every the top and the bottom of the inside wall of suction tube 4 all are provided with recess 10, when the 11 joints of fixed block were at the recess 10 at top, minor diameter's suction tube 4 was used for extracting blood, and when the 11 joints of fixed block were at the recess 10 of bottom, major diameter's suction tube 4 was used for extracting blood. The pull rings 6 in the suction tube 4 are positioned on the same straight line, so that the guide rod 2 can be conveniently pulled out, and the guide rod 2 is protected during the trial period. In two adjacent suction pipes 4, the suction pipe 4 with the smaller diameter can be completely arranged in the suction pipe 4 with the larger diameter, and the requirements of different calibers can be realized. The injector 3 is detachably connected with the buffer cavity 1 through a second double-way pipe, and the requirement on negative pressure can be met by replacing the injector 3. The diameter of the pull ring 6 is 1/3-1/8 of the suction tube 4, and the pull ring 6 is positioned at the lower end of the groove 10 at the bottom, so that the influence of the pull ring 6 in blood sampling is avoided. And one end of the guide rod 2 close to the elastic sealing plug 7 is connected with a handle 8, so that the operation is convenient. The suction tube 4 the pull ring 6 the guide rod 2 reaches the cushion chamber 1 is the transparent silica gel of stereoplasm, the setting of the suction tube 4 of being convenient for, the rigidity of pull ring and the promotion and the pull of guide rod.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. Biomedical experiment blood sampling device, its characterized in that includes aspirator, cushion chamber (1), guide bar (2) and syringe (3), the aspirator is that diameter and length all cup joint by a plurality of suction tubes (4) of big range and form, and every adjacent two all through injecing between suction tube (4) stop device interconnect of suction tube (4) position, the diameter is minimum suction tube (4) are located the top, and can dismantle sealing connection through first double-pass pipe (9) at suction tube (4) top that is located the top have syringe needle (5), the diameter is maximum suction tube (4) with cushion chamber (1) fixed connection, all suction tube (4) with cushion chamber (1) through connection, cushion chamber (1) is kept away from the one end of suction tube (4) with syringe (3) intercommunication, the head of the injector (3) is detachably connected with the buffer cavity (1) in a sealing way; the guide rod (2) is connected in the buffer cavity (1) and all the suction pipes (4) in a penetrating manner, a pull-out ring (6) is fixedly arranged on the inner wall of each suction pipe (4), and the pull-out ring (6) in the suction pipe (4) with the smallest diameter is fixedly connected with one end of the guide rod (2); a through hole is formed in the bottom of the buffer cavity (1), an elastic sealing plug (7) is arranged in the through hole, and the guide rod (2) penetrates through all the pull-out rings (6) and the elastic sealing plugs (7) arranged on the suction pipe (4) from top to bottom and enables the suction pipe (4) to move up and down;

adjacent be provided with the sealing washer between suction tube (4), just the sealing washer cover is established middle part position on the small suction tube (4) of diameter, the sealing washer is the rubber circle, and this sealing washer syringe's push rod head is the same, can remove along with the removal of suction tube 4 under the effect of external force, but has certain leakproofness.

2. The biomedical experimental blood sampling device according to claim 1, wherein the limiting device comprises a groove (10) and a plurality of fixing blocks (11), the fixing blocks (11) and the groove (10) are hemispherical, every two adjacent suction tubes (4) are provided with the groove (10) formed on the inner side wall of the suction tube (4) with a large diameter, the fixing blocks (11) are arranged on the outer side wall of the suction tube (4) with a small diameter, and the fixing blocks (11) can be clamped in the groove (10) and can slide in the groove (10) after the pull ring (6) is pulled.

3. Biomedical experimental blood-drawing device according to claim 2, characterized in that the top of the outer side wall of each suction tube (4) is provided with said fixing block (11).

4. Biomedical experimental blood-drawing device according to claim 2, characterized in that the top and bottom of the inner side wall of each suction tube (4) are provided with said grooves (10).

5. A biomedical experimental blood-drawing device according to claim 1, characterized in that the drawing rings (6) in all the drawing tubes (4) are positioned on the same line.

6. The biomedical experimental blood-drawing device according to claim 1, characterized in that the suction tube (4) with smaller diameter can be completely inserted into the suction tube (4) with larger diameter in two adjacent suction tubes (4).

7. The biomedical experimental blood-drawing device according to claim 1, characterized in that the syringe (3) and the buffer chamber (1) are detachably connected through a second double-way tube.

8. The biomedical experimental blood-drawing device according to claim 2, characterized in that said drawing ring (6) has a diameter comprised between 1/3 and 1/8 of said drawing tube (4) and is located at the lower end of said groove (10) at the bottom.

9. A biomedical laboratory blood sampling device according to claim 1, characterized in that a handle (8) is attached to the end of the guiding rod (2) close to the elastic sealing plug (7).

10. The biomedical experimental blood sampling device according to claim 1, wherein the suction tube (4), the pull ring (6), the guide rod (2) and the buffer chamber (1) are all made of hard transparent silica gel.