CN211740733U

CN211740733U - Hemodialysis machine sampler

Info

Publication number: CN211740733U
Application number: CN202020275661.6U
Authority: CN
Inventors: 陈春竹
Original assignee: Yanting County People's Hospital
Current assignee: Yanting County People's Hospital
Priority date: 2020-03-09
Filing date: 2020-03-09
Publication date: 2020-10-23
Anticipated expiration: 2030-03-09

Abstract

The utility model discloses a hemodialysis machine sampler, which comprises a piston cylinder, a fixed cylinder and a negative pressure cylinder, wherein a piston head is arranged in the piston cylinder, a lifting rod is connected on the piston head, a through hole is arranged at the lower end of the piston cylinder, a first check valve and a second check valve are arranged in the fixed cylinder, the second check valve is connected with the negative pressure cylinder, a fixed ring is arranged at the lower end of the fixed cylinder, an installation head with a sampling tube is arranged at the lower end of the fixed ring, the sampling tube is connected with the negative pressure cylinder through a liquid inlet tube, the negative pressure cylinder is connected with a liquid collecting bottle through a fixed plug, the liquid inlet tube passes through the fixed plug and is connected with the liquid collecting bottle, a gas outlet is arranged on the fixed plug, a fixed block is arranged at the upper end of the fixed plug where the liquid inlet tube is arranged, an adapter tube with a screwing bolt is connected at the left side of the liquid, the screwing bolt is screwed, the circulation of the liquid inlet pipe is cut off, and the liquid in the pipe cannot leak after the sample is taken out.

Description

Hemodialysis machine sampler

Technical Field

The utility model relates to the technical field of medical equipment, specifically a hemodialysis machine sampler.

Background

Hemodialysis utilizes the principle of pellicle, introduces the patient's blood and dislysate into the cerini dialyser cerini simultaneously, is the opposite direction flow in dialysis membrane both sides, relies on the solubility gradient of pellicle both sides, osmotic gradient and water pressure gradient, clears away the toxin through dispersion, convection current, absorption, clears away unnecessary moisture in vivo through ultrafiltration and infiltration, supplements the material that needs simultaneously, corrects electrolyte, acid-base balance disorder.

The existing sampler is not tightly sealed in practical use, a sample is easily polluted by the outside, and after the sampling is finished, the phenomenon of liquid backflow easily occurs in the sampler, so that great inconvenience is brought to the detection work.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hemodialysis machine sampler to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a hemodialysis machine sampler comprises a piston cylinder, a fixed cylinder sleeved at the lower end of the piston cylinder and a negative pressure cylinder connected with the fixed cylinder, wherein a piston head is arranged in the piston cylinder, the upper end of the piston head is connected with a lifting rod, and a through hole is formed at the joint of the lower end of the piston cylinder and the fixed cylinder;

a first one-way valve for exhausting and decompressing is arranged in the fixed cylinder, the first one-way valve penetrates through the side wall of the fixed cylinder and is connected with the external space of the fixed cylinder, a second one-way valve for pumping air is arranged on one side of the fixed cylinder, which is far away from the first one-way valve, the second one-way valve penetrates through the side wall of the fixed cylinder and is connected with the inner cavity of the negative pressure cylinder, a fixed ring is arranged at the lower end of the fixed cylinder, an installation head with a sampling tube is arranged at the lower end of the fixed ring, and the upper end of the sampling tube penetrates through the fixed ring and is;

the negative pressure barrel is connected with the liquid collecting bottle through a fixing plug arranged at the lower end of the negative pressure barrel, one end of a liquid inlet pipe penetrates through the fixing plug and is connected with the inner cavity of the liquid collecting bottle, an air outlet hole is formed in the fixing plug, a fixing block is arranged at the upper end of the fixing plug where the liquid inlet pipe is located, a connecting barrel is connected to the left side of the liquid inlet pipe where the fixing block is located, a screwing bolt connected with the inner wall of the connecting barrel in a threaded mode is arranged in the connecting barrel, and one end.

Preferably, the first one-way valve and the second one-way valve comprise a one-way valve inner cavity, a one-way valve outer cavity, a limiting plug and a metal spring, the limiting ring is clamped in the one-way valve inner cavity and is in sliding connection with the side wall of the one-way valve inner cavity, one end of the limiting plug is connected with one end of the one-way valve outer cavity through the metal spring, and the other end of the limiting plug is provided with a cavity with a through hole.

Preferably, the one end of revolving the bolt is equipped with the top, has inlayed the rubber layer on the top, links up a section of thick bamboo and passes negative pressure section of thick bamboo lateral wall and pass through sealing ring and negative pressure section of thick bamboo fixed connection.

Preferably, the joint of the mounting head and the fixing ring is movably connected with the fixing ring through threads, and the inside of the mounting head is fixedly connected with a connecting pipe.

Preferably, the joint of the liquid collecting bottle and the fixing plug is provided with a thread, and a sealing strip is arranged in the fixing plug where the thread is located.

Preferably, the outer side of the piston cylinder is provided with an anti-slip pad, and the anti-slip pad is composed of a rubber ring with a plurality of rectangular grooves.

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

the sampler extracts air in the tube through the reciprocating motion of the piston so as to finish sampling work, the negative pressure cylinder can stably maintain good negative pressure environment and air tightness through the two one-way valves, and after sampling is finished, the screwing bolt is screwed to stop the circulation of the liquid inlet tube, so that the liquid in the tube cannot leak after the sample is taken out;

the first one-way valve only gives air out and does not give air in, so that the air in the mounting cylinder can be exhausted when the piston is pressed downwards, the second one-way valve only gives air in and does not give air out, and the piston is lifted upwards, so that the air in the negative pressure pipe can be pumped out to form a negative pressure environment;

when the top passes through the rubber pad and ends the feed liquor pipe, can not cause the damage to the feed liquor pipe, the finger makes through detaining the recess outside the piston section of thick bamboo can not take place the smooth phenomenon of hand when using, and the installation head can freely be dismantled through revolving soon to the convenience is in time changed feed liquor pipe and sampling tube, and the collecting bottle can keep fine gas tightness through the sealing strip in addition, can in time effectually take the sample through twisting the collecting bottle, and the practicality is strong.

Drawings

Fig. 1 is a schematic structural diagram of a hemodialysis machine sampler.

Fig. 2 is a schematic view of a hemodialysis machine sampler fixing cylinder.

Fig. 3 is a schematic structural diagram of a negative pressure cylinder of a sampler of a hemodialysis machine.

Fig. 4 is a schematic structural view of a hemodialysis machine sampler screwing bolt.

Fig. 5 is a schematic structural diagram of a first one-way valve of a hemodialysis machine sampler.

Fig. 6 is a schematic structural diagram of a second one-way valve of a hemodialysis machine sampler.

In the figure: 1-piston cylinder, 2-fixed cylinder, 3-negative pressure cylinder, 4-fixed ring, 5-liquid collecting bottle, 6-sampling tube, 7-lifting rod, 8-piston head, 9-through hole, 10-first one-way valve, 11-mounting head, 12-connecting tube, 13-second one-way valve, 14-fixed plug, 15-liquid inlet tube, 16-air outlet hole, 17-sealing ring, 18-knob bolt, 19-connecting cylinder, 20-fixed block, 21-top head, 22-non-slip mat.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-6, in the embodiment of the present invention, a hemodialysis machine sampler includes a piston cylinder 1, a fixed cylinder 2 sleeved at the lower end of the piston cylinder 1, and a negative pressure cylinder 3 connected to the fixed cylinder 2, wherein a piston head 8 is disposed in the piston cylinder 1, the upper end of the piston head 8 is connected to a lifting rod 7, a through hole 9 is disposed at the connection between the lower end of the piston cylinder 1 and the fixed cylinder 2, the lifting rod 7 is lifted and lowered back and forth to drive the piston head 8 to move up and down along the piston cylinder 1, so that air in the mounting cylinder 2 is extracted through the through hole 9, and the extraction work is completed by matching with a one-;

a first one-way valve 10 for exhausting and reducing pressure is arranged in the fixed cylinder 2, the first one-way valve 10 penetrates through the side wall of the fixed cylinder 2 and is connected with the outer space of the fixed cylinder 2, a second one-way valve 13 for pumping air is arranged on one side of the fixed cylinder 2 far away from the first one-way valve 10, the second one-way valve 13 penetrates through the side wall of the fixed cylinder 2 and is connected with the inner cavity of the negative pressure cylinder 3, a fixed ring 4 is arranged at the lower end of the fixed cylinder 2, an installing head 11 with a sampling tube 6 is arranged at the lower end of the fixed ring 4, the upper end of the sampling tube 6 penetrates through the fixed ring 4 and is connected with the negative pressure cylinder 3 through a liquid inlet tube 15 arranged in the fixed cylinder 2, the first one-way valve 10 and the second one-way valve 13 comprise one-way valve inner cavity, a one-way valve outer cavity, a limiting plug and a metal spring, the limiting ring is, the other end of the limiting plug is provided with a cavity with a through hole, the air valve is a special valve for preventing the transient process decompression wave from generating negative pressure in the pipe, the air valve is usually arranged at the position of a high point where the hydrodynamic pressure is lower when the pipeline normally runs, liquid column separation is possible to generate in the transient flow process, air is sucked when the pressure in the pipeline is lower than the atmospheric pressure, air is discharged when the pressure in the pipeline is increased to be higher than the atmospheric pressure, and the valve can be automatically closed when the pipeline is filled with liquid in the pipe in the exhaust process, so that the liquid is not allowed to be discharged into the atmosphere;

the negative pressure cylinder 3 is connected with the liquid collecting bottle 5 through a fixing plug 14 arranged at the lower end of the negative pressure cylinder 3, one end of a liquid inlet pipe 15 penetrates through the fixing plug 14 and is connected with the inner cavity of the liquid collecting bottle 5, an air outlet 16 is formed in the fixing plug 14, a fixing block 20 is arranged at the upper end of the fixing plug 14 where the liquid inlet pipe 15 is located, the left side of the liquid inlet pipe 15 where the fixing block 20 is located is connected with a connecting cylinder 19, a screwing bolt 18 in threaded connection with the inner wall of the connecting cylinder 19 is arranged in the connecting cylinder 19, one end, close to the fixing block 20, of the screwing bolt 18 is in contact with the liquid inlet pipe 15, the negative pressure is a gas pressure state lower than the normal pressure, air is discharged outwards through power to reduce the air pressure in the connecting cylinder;

one end of the screwing bolt 18 is provided with a top 21, a rubber layer is embedded on the top 21, a connecting cylinder 19 penetrates through the side wall of the negative pressure cylinder 3 and is fixedly connected with the negative pressure cylinder 3 through a sealing ring 17, the joint of the mounting head 11 and the fixing ring 4 is movably connected with the fixing ring 4 through threads, a connecting pipe 12 is fixedly connected in the mounting head 11, the joint of the liquid collecting bottle 5 and the fixing plug 14 is provided with threads, and a sealing strip is arranged in the fixing plug 14 where the threads are positioned;

the piston cylinder 1 outside is equipped with slipmat 22, slipmat 22 comprises the rubber circle that has a plurality of rectangle recesses, top 21 is through the rubber pad when ending to feed liquor pipe 15, can not cause the damage to feed liquor pipe 15, the finger passes through the frictional force of rubber through the recess of detaining the outer slipmat 22 upper end of piston cylinder, make can not take place the hand smooth when using, threaded connection has good gas tightness, installation head 11 can freely dismantle through revolving soon, be convenient for in time change feed liquor pipe 15 and sampling tube 6, liquid collecting bottle 5 can keep fine gas tightness through the sealing strip in addition, can in time effectually take the sample through twisting liquid collecting bottle 5.

The utility model discloses a theory of operation is: the sampling tube 6 is put into hemodialysis liquid to be sampled and detected, the lifting rod 7 is pulled, the lifting rod 7 drives the piston head 8 to ascend along the inner wall of the piston cylinder 1, gas is extracted from the fixed cylinder 2, meanwhile, air in the negative pressure cylinder 3 is extracted through the second one-way valve 13, the lifting rod 7 is pressed to drive the piston head 8 to discharge the gas in the fixed cylinder 2 and the piston cylinder 1 from the first one-way valve 10, the negative pressure cylinder 3 forms a negative pressure environment through extraction, so that suction force is generated on the liquid collecting bottle 5 through the gas outlet hole, the liquid collecting bottle 5 extracts sampling liquid through the liquid inlet tube 15 and the sampling tube 6 and enters the liquid collecting bottle 5, after sampling work is completed, the screwing bolt 18 is screwed, the top 21 props against the liquid inlet tube 15 and stops the liquid inlet tube 15, then the liquid collecting bottle 5 is screwed, the taken liquid is taken out, the sampler work is completed, and the sampler moves back and forth through the piston, the work of taking a sample is then accomplished in the extraction of intraductal air, makes negative pressure section of thick bamboo 3 can be stable keep good negative pressure environment and gas tightness through two check valves, finishes when the sample after, twists and revolves wrong bolt 18, ends the circulation of feed liquor pipe 15, and the condition of revealing can not take place after taking out the sample for intraductal liquid.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A hemodialysis machine sampler comprises a piston cylinder (1), a fixed cylinder (2) sleeved at the lower end of the piston cylinder (1) and a negative pressure cylinder (3) connected with the fixed cylinder (2), and is characterized in that a piston head (8) is arranged in the piston cylinder (1), the upper end of the piston head (8) is connected with a lifting rod (7), and a through hole (9) is formed at the joint of the lower end of the piston cylinder (1) and the fixed cylinder (2);

the vacuum sampling device is characterized in that a first one-way valve (10) with the functions of exhausting and reducing pressure is arranged in the fixed cylinder (2), the first one-way valve (10) penetrates through the side wall of the fixed cylinder (2) and is connected with the outer space of the fixed cylinder (2), a second one-way valve (13) with the function of extracting air is arranged on one side, away from the first one-way valve (10), of the fixed cylinder (2), the second one-way valve (13) penetrates through the side wall of the fixed cylinder (2) and is connected with the inner cavity of the negative pressure cylinder (3), a fixed ring (4) is arranged at the lower end of the fixed cylinder (2), an installing head (11) with a sampling tube (6) is arranged at the lower end of the fixed ring (4), and the upper end of the sampling tube (6) penetrates through the fixed ring (4) and is connected with the negative pressure;

negative pressure section of thick bamboo (3) link to each other with collector bottle (5) through establishing fixed stopper (14) at negative pressure section of thick bamboo (3) lower extreme, feed liquor pipe (15) one end is passed fixed stopper (14) and is linked to each other with the inner chamber of collector bottle (5), venthole (16) have been seted up on fixed stopper (14), feed liquor pipe (15) place fixed stopper (14) upper end is equipped with fixed block (20), fixed block (20) place feed liquor pipe (15) left side is connected with links up a section of thick bamboo (19), it is equipped with in a section of thick bamboo (19) and links up a section of thick bamboo (19) inner wall threaded connection soon to twist bolt (18), it contacts with feed liquor pipe (15) to twist bolt (18) and be close to fixed block (20) one end.

2. The hemodialysis machine sampler according to claim 1, wherein the first one-way valve (10) and the second one-way valve (13) comprise a one-way valve inner cavity, a one-way valve outer cavity, a limiting plug and a metal spring, the limiting plug is clamped in the one-way valve inner cavity and is slidably connected with the side wall of the one-way valve inner cavity, one end of the limiting plug is connected with one end of the one-way valve outer cavity through the metal spring, and the other end of the limiting plug is provided with a cavity with a through hole.

3. The hemodialysis machine sampler according to claim 1, wherein a top head (21) is arranged at one end of the screwing bolt (18), a rubber layer is embedded on the top head (21), and the connection cylinder (19) penetrates through the side wall of the negative pressure cylinder (3) and is fixedly connected with the negative pressure cylinder (3) through a sealing ring (17).

4. A hemodialysis machine sampler according to claim 1, wherein the joint of the mounting head (11) and the fixing ring (4) is movably connected with the fixing ring (4) through a thread, and the inside of the mounting head (11) is fixedly connected with an adapter tube (12).

5. A hemodialysis machine sampler according to claim 1, wherein a screw thread is provided at the joint of the liquid collecting bottle (5) and the fixing plug (14), and a sealing strip is provided in the fixing plug (14) where the screw thread is located.

6. A hemodialysis machine sampler according to claim 1, wherein the piston cylinder (1) is provided with a non-slip pad (22) on the outer side, and the non-slip pad (22) is composed of a rubber ring with a plurality of rectangular grooves.