CN212134172U

CN212134172U - Dialysate sampling device

Info

Publication number: CN212134172U
Application number: CN202020545294.7U
Authority: CN
Inventors: 王栋栋
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-11
Anticipated expiration: 2030-04-14

Abstract

The utility model discloses a dialysate sampling device, including three way connection, three way connection includes outer tube and rotary valve, the outer tube is hollow column pipe and integrative intercommunication has first interface portion, No. two interface portions, sample interface portion on its pipe wall, the rotary valve is cylindric and its inside T shape through-hole that is provided with, the rotary valve sets up in the outer tube inside, the rotary valve can rotate to T shape through-hole with first interface portion, No. two interface portions, sample interface portion communicate with each other, the rotary valve also can rotate to T shape through-hole only with first interface portion, No. two interface portions communicate with each other; the first interface part is connected with a first pipe, and the other end of the first pipe is communicated with a first connector; the second interface part is connected with a second pipe, and the other end of the second pipe is communicated with a second joint; the utility model has simple structure, low cost, comprehensive disinfection, repeated use, capability of obtaining a large amount of fresh dialysate samples and simple operation.

Description

Dialysate sampling device

Technical Field

The utility model relates to a dislysate bacterial culture field, especially a dislysate sampling device.

Background

Fresh dialysate produced by the dialysis machine enters the dialyzer and precipitates harmful components from the patient's blood in the dialyzer. If the bacterial quantity of the dialysate generated by the dialysis machine exceeds the standard, the living quality and the dialysis treatment effect of a patient can be greatly influenced, serious patients can cause serious group medical accidents, and whether the fresh dialysate meets the relevant standard requirements needs to be detected.

At present, the international standard and the national standard (ISO 11663-. The sample that the sampler on the dialysis machine was taken out can only do the ion detection of dislysate and can't all-round disinfection, have the cecum, there is the pollution of other factors, so can't be used as the sampling route of bacteria culture, and the dislysate that the dialysis machine produced can't correctly carry out bacteria culture and detect. At present, no portable, quick and pollution-free (repeatedly-sterilizable) sampling tool exists clinically, and a sampler which can obtain a large amount of fresh dialysate and can ensure that the dialysate is not polluted in the sampling process is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problems and designing a dialysate sampling device.

The technical proposal of the utility model is that the dialysate sampling device comprises a three-way joint, the three-way joint comprises an outer pipe and a rotary valve, the outer pipe is a hollow cylindrical pipe, the pipe wall of the outer pipe is integrally communicated with a first interface part, a second interface part and a sampling interface part, the first interface part and the second interface part are on the same straight line, the sampling interface part is vertical to the first interface part and the second interface part, the rotary valve is cylindrical and is internally provided with a T-shaped through hole, the rotary valve is arranged inside the outer pipe, the rotary valve can rotate in the outer pipe until the T-shaped through hole is communicated with the first interface part, the second interface part and the sampling interface part, the rotary valve can also rotate in the outer pipe until the T-shaped through hole is only communicated with the first connecting port and the second connecting port;

the first interface part is connected with a first pipe, and the other end of the first pipe is communicated with a first connector;

the second interface part is connected with a second pipe, and the other end of the second pipe is communicated with a second connector.

The outer diameter of the rotary valve is equal to the inner diameter of the outer tube.

The rotary valve is provided with two circles of grooves, the two circles of grooves are respectively arranged above and below the T-shaped through hole, and two circles of bulges corresponding to the grooves are arranged in the outer pipe.

The rotary valve is provided with a rotary handle, and the rotary handle is provided with a T-shaped mark corresponding to the T-shaped through hole.

A connect include with a union coupling's connecting portion and joint, the front end that connects is hollow ladder cylinder, ladder cylinder's head diameter ratio afterbody diameter is slightly littleer, the surface that connects the head is provided with No. two recesses of round, it has the spacing steel wire of round to inlay in No. two recesses, spacing steel wire protrusion in No. two recesses, it has the round steel ball to inlay on the joint, connect the inside sealing washer that is fixed with, No. two recesses the steel ball a sealing washer follows in proper order the head that connects is to its inside range.

The connector is provided with a metal ring in a sliding manner, the inner diameter of the metal ring is slightly larger than the outer diameter of the tail portion of the stepped cylinder, a circle of second protrusions are arranged inside the metal ring, when the metal ring slides to the head portion of the stepped cylinder, the outer side face of the second protrusions is in contact with the limiting steel wire, the second protrusions enable the steel balls to be pressed inwards, the head portion of the stepped cylinder is sleeved with a spring, the spring is arranged in the metal ring, one side of the spring is in contact with the second protrusions and is in a compression state, a limiting block is arranged on the outer surface of the tail portion of the stepped cylinder, and when the metal ring slides to the tail portion of the stepped cylinder, the side face of the metal ring is in contact with the limiting block.

The connecting part is connected with the tail part of the connector, the connector is sleeved on a dialysate inlet connector of a dialyzer, a circle of semicircular groove is formed in the dialysate inlet connector of the dialyzer, the steel ball is clamped in the semicircular groove of the dialysate inlet connector of the dialyzer, and the top end of the dialysate inlet connector of the dialyzer is in contact with the first sealing ring.

No. two connect and be provided with the semicircular groove of round one number, the top that connects No. two is provided with the recess No. three, No. two connect and insert dialysis machine bypass and connect in, the dialysis machine bypass connects and has set gradually joint portion and No. two sealing washers from outside to inside, joint portion card is in the semicircular groove, No. two sealing washers tightly overlap No. three on the recess.

The tail part of the second connector is connected to the second pipe.

The sampling interface part is connected with a sampling needle cylinder.

The dialysate sampling device manufactured by the technical proposal of the utility model has simple structure, low cost, convenient disinfection and comprehensive disinfection, and can be reused after disinfection; the adopted first connector and the second connector are standard sizes and are suitable for dialysis machines of various brands or models; can satisfy the current clinical demand of getting a large amount of fresh dialysate samples, easy operation is convenient, and the practicality is strong.

Drawings

Fig. 1 is a schematic cross-sectional view of a dialysate sampling device according to the present invention;

fig. 2 is a schematic side view of a three-way joint of a dialysate sampling device according to the present invention;

FIG. 3 is a schematic cross-sectional view of the three-way joint of the dialysate sampling device according to the present invention;

in the figure, 1, a three-way joint; 2. an outer tube; 3. rotating the valve; 4. a first interface part; 5. interface part II; 6. a sampling interface part; 7. a T-shaped through hole; 8. a first pipe; 9. a first connector; 10. A second pipe; 11. a second joint; 12. rotating the handle; 13. t-shaped identification; 14. a connecting portion; 15. a joint; 16. steel balls; 17. a metal ring; 18. a second bump; 19. a limiting block; 20. A first semicircular groove; 21. a first groove; 22. a first bump; 23. a second groove; 24. A stepped cylinder; 25. a limiting steel wire; 26. a first sealing ring; 27. a spring; 28. groove III.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, and as shown in fig. 1 to 3, a dialysate sampling apparatus includes a three-way joint 1, wherein the three-way joint 1 includes an outer tube 2 and a rotary valve 3. The rotary valve 3 is used to control the flow direction of the dialysis fluid in the three-way connection 1. The outer tube 2 is a hollow cylindrical tube, and a first interface part 4, a second interface part 5 and a sampling interface part 6 are integrally communicated on the tube wall of the outer tube. The first interface part 4, the second interface part 5 and the sampling interface part 6 are respectively an outlet, an inlet and a sampling port of the dialysate. The first interface part 4 and the second interface part 5 are collinear, and the sampling interface part 6 is perpendicular to the first interface part 4 and the second interface part 5. The rotary valve 3 is cylindrical and is internally provided with a T-shaped through hole 7, and the T-shaped through hole 7 is used for changing the flow direction of the dialysate. The rotary valve 3 is arranged in the outer pipe 2, the outer diameter of the rotary valve 3 is equal to the inner diameter of the outer pipe 2, the outer pipe 2 is made of flexible plastic, the outer pipe 2 is tightly wrapped outside the rotary valve 3, so that the outer pipe 2 of the rotary valve 3 is in a sealing state, and dialysate cannot overflow when flowing through the T-shaped through hole 7.

The rotary valve 3 can also be rotated in the outer tube 2 until the T-shaped through hole 7 is communicated with the first interface part 4 and the second interface part 5, and at this time, the dialysate flows from the second interface part 5 to the first interface part 4. The rotary valve 3 can rotate in the outer tube 2 until the T-shaped through hole 7 is communicated with the first interface part 4, the second interface part 5 and the sampling interface part 6, and at the moment, the dialysate can flow from the second interface part 5 to the first interface part 4 and can be sampled at the sampling interface part 6 by adopting a sampling needle tube.

The rotary valve 3 is provided with two circles of grooves 21, the two circles of grooves 21 are respectively arranged above and below the T-shaped through hole 7, and two circles of protrusions 22 corresponding to the grooves 21 are arranged inside the outer pipe 2. The first protrusion 22 is caught in the first groove 21, and can prevent the rotary valve 3 from being displaced when rotated, and can further seal between the rotary valve 3 and the outer tube 2, preventing dialysate from leaking out of the outer tube 2.

Be provided with rotatory handle 12 on the rotary valve 3, make things convenient for the staff to rotate rotary valve 3, be provided with on the rotatory handle 12 with T shape sign 13 that T shape through-hole 7 is corresponding makes things convenient for the staff to confirm the flow direction of dislysate.

The first connector part 4 is connected with a first pipe 8, and the other end of the first pipe 8 is communicated with a first connector 9. The first joint 9 comprises a connecting part 14 and a joint 15 which are connected with the first pipe 8, and the connecting part 14 is connected with the tail part of the joint 15.

The front end of the joint 15 is a hollow stepped cylinder 24, and the diameter of the head part of the stepped cylinder 24 is slightly smaller than that of the tail part. The connector 15 is sleeved with a metal ring 17 in a sliding manner, and the inner diameter of the metal ring 17 is slightly larger than the outer diameter of the tail part of the stepped cylinder 24. A circle of second-number bulges 18 are arranged inside the metal ring 17. The outer surface of the head of the joint 15 is provided with a circle of second groove 23, a circle of limiting steel wire 25 is embedded in the second groove 23, and the limiting steel wire 25 protrudes out of the second groove 23. When the metal ring 17 slides to the head of the stepped cylinder 24, the outer side surface of the second bump 18 contacts with the limiting steel wire 25. The restraining wire 25 serves to restrain the metal ring 17 from sliding outside the nipple 15.

The head of the stepped cylinder 24 is sleeved with a spring 27, the spring 27 is made of 316 stainless steel materials so as to avoid corrosion, the spring 27 is arranged in the metal ring 17, one side of the spring 27 is in contact with the second bulge 18, the other side of the spring 27 is in contact with the step of the stepped cylinder 24, the spring 27 is in a compressed state between the two, and the metal ring 17 is kept at the head of the joint 15 under the elastic action of the spring 27. The outer surface of the tail of the stepped cylinder 24 is provided with a limiting block 19 for preventing the metal ring 17 from sliding when the metal ring 17 slides to the tail of the stepped cylinder 24, the side surface of the metal ring 17 is in contact with the limiting block 19, and the limiting block 19 is used for limiting the metal ring 17 to prevent the metal ring 17 from sliding to the outside of the joint 15.

A ring of steel balls 16 are embedded on the joint 15, and when the metal ring 17 is kept at the head of the joint 15, the second protrusions 18 press the steel balls 16 inwards. A first sealing ring 26 is fixed inside the joint 15, and the second groove 23, the steel balls 16 and the first sealing ring 26 are sequentially arranged from the head of the joint 15 to the inside of the joint.

The joint 15 is sleeved on a dialysate inlet joint of a dialyzer, a circle of semicircular groove is formed in the dialysate inlet joint of the dialyzer, the steel balls 16 are clamped in the semicircular groove of the dialysate inlet joint of the dialyzer, the top end of the dialysate inlet joint of the dialyzer is in contact with the first sealing ring 26, the first sealing ring 26 seals the joint 15 and the dialysate inlet joint of the dialyzer, and the steel balls 16 enable the joint 15 to be fixed on the dialysate inlet joint of the dialyzer. The staff pulls metal ring 17 backward, will connect 15 cover on the dislysate access connection of cerini dialyser cerini and guarantee that the steel ball card is in the semi-circular recess of the dislysate access connection of cerini dialyser cerini, then loosen metal ring 17, spring 27 plays metal ring 17 to the head that connects 15, and No. two protruding 18 presses the steel ball in the semi-circular recess of the dislysate access connection of cerini dialyser cerini this moment, and No. one connects 9 and just fixes on the dislysate access connection of cerini dialyser cerini, and simple to operate is swift.

The second interface part 5 is connected with a second pipe 10, and the other end of the second pipe 10 is communicated with a second joint 11. The tail part of the second joint 11 is connected to the second pipe 10. No. two connect and be provided with a round semicircular groove 20 on 11, No. two top that connects 11 is provided with No. three recess 28, No. two connect 11 insert dialysis machine bypass and connect in, the dialysis machine bypass connects and has set gradually joint portion and No. two sealing washers from outside to inside, joint portion card is in No. one semicircular groove 20, No. two sealing washers tightly overlap No. three on the recess 28. Therefore, the second connector 11 is firmly connected to the dialysis machine bypass connector, and the second sealing ring seals the contact part of the second connector 11 and the dialysis machine bypass connector.

The sampling interface part 6 is connected with an aseptic sampling needle cylinder, and when a dialysate sample needs to be taken, the piston of the sampling needle cylinder is pulled upwards, so that the dialysate can be sucked into the sampling needle cylinder.

In actual use, fresh dialysate generated by the dialyzer flows through the dialyzer bypass connection to the dialyzer where the dialysate elutes harmful components from the patient's blood. So the utility model provides a dialysis solution sampling device installs between the bypass joint of dialysis machine and cerini dialyser cerini, can guarantee the normal flow direction of dialysis solution and can take out the sampling device of the fresh dialysis solution again.

In the embodiment, the dialysate sampling device has a simple structure and low cost, can save a large amount of bacteria detection cost for hospitals, can be comprehensively disinfected, is convenient to disinfect, and can meet the requirement of obtaining a large amount of samples clinically; the first connector 9 and the second connector 11 of the dialysate sampling device are standard sizes and are suitable for various models of dialyzers, and the dialysate sampling device can be repeatedly used; the flow direction of the dialysate can be controlled by a worker only by rotating the rotary valve 3 in the three-way connector 1, the operation is simple and rapid, and the sampling needle cylinder can take out fresh dialysate from the sampling port 6 and can take out a large amount of dialysate; no. one connect 9 and No. two connect 11 all can quick connect on the dislysate import connector of dialysis machine bypass joint and cerini dialyser cerini, easy operation is convenient, and the practicality is strong.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims

1. The utility model provides a dislysate sampling device, its characterized in that, includes three way connection (1), three way connection (1) includes outer tube (2) and rotary valve (3), outer tube (2) are hollow column pipe and integrative intercommunication has interface part (4), No. two interface parts (5), sample interface part (6) on its pipe wall, interface part (4) with No. two interface parts (5) are on same straight line, sample interface part (6) with interface part (4) with No. two interface parts (5) are perpendicular, rotary valve (3) are cylindric and its inside T shape through-hole (7) that is provided with, rotary valve (3) set up inside outer tube (2), rotary valve (3) can outer tube (2) inside rotatory extremely T shape through-hole (7) with interface part (4), No. two interface parts (5), The sampling interface part (6) is communicated, and the rotary valve (3) can also rotate in the outer pipe (2) until the T-shaped through hole (7) is communicated with the first interface part (4) and the second interface part (5);

the first connecting part (4) is connected with a first pipe (8), and the other end of the first pipe (8) is communicated with a first joint (9);

the second connector (5) is connected with a second pipe (10), and the other end of the second pipe (10) is communicated with a second connector (11).

2. A dialysate sampling device according to claim 1, wherein the outer diameter of the rotary valve (3) is equal to the inner diameter of the outer tube (2).

3. A dialysate sampling device according to claim 1, wherein the rotary valve (3) is provided with two circles of the first groove (21), the two circles of the first groove (21) are respectively disposed above and below the T-shaped through hole (7), and the outer tube (2) is internally provided with two circles of the first protrusion (22) corresponding to the first groove (21).

4. A dialysate sampling device according to claim 1, wherein the rotary valve (3) is provided with a rotary knob (12), and the rotary knob (12) is provided with a T-shaped marking (13) corresponding to the T-shaped through hole (7).

5. The dialysate sampling device according to claim 1, wherein the first connector (9) comprises a connection portion (14) and a connector (15) for connecting to the first tube (8), the front end of the joint (15) is a hollow stepped cylinder (24), the diameter of the head part of the stepped cylinder (24) is slightly smaller than that of the tail part, a circle of second groove (23) is arranged on the outer surface of the head part of the joint (15), a circle of limiting steel wire (25) is embedded in the second groove (23), the limiting steel wire (25) protrudes out of the second groove (23), a circle of steel balls (16) are embedded on the joint (15), a first sealing ring (26) is fixed inside the stepped cylinder (24), and the second groove (23), the steel ball (16) and the first sealing ring (26) are sequentially arranged from the head of the joint (15) to the inside of the joint.

6. The dialysate sampling device according to claim 5, wherein a metal ring (17) is slidably sleeved on the joint (15), the inner diameter of the metal ring (17) is slightly larger than the outer diameter of the tail of the stepped cylinder (24), a circle of second protrusion (18) is arranged inside the metal ring (17), when the metal ring (17) slides to the head of the stepped cylinder (24), the outer side surface of the second protrusion (18) is in contact with the limiting steel wire (25) and the second protrusion (18) presses the steel ball (16) inwards, a spring (27) is sleeved on the head of the stepped cylinder (24), the spring (27) is arranged inside the metal ring (17), one side of the spring (27) is in contact with the second protrusion (18) and the spring (27) is in a compressed state, a limiting block (19) is arranged on the outer surface of the tail of the stepped cylinder (24), when the metal ring (17) slides to the tail part of the stepped cylinder (24), the side surface of the metal ring (17) is contacted with the limiting block (19).

7. The dialysate sampling device according to claim 5, wherein the connecting part (14) is connected with the tail part of the connector (15), the connector (15) is sleeved on a dialysate inlet connector of a dialyzer, a circle of semicircular grooves are arranged on the dialysate inlet connector of the dialyzer, the steel balls (16) are clamped in the semicircular grooves of the dialysate inlet connector of the dialyzer, and the top end of the dialysate inlet connector of the dialyzer is in contact with the sealing ring (26).

8. The dialysate sampling device according to claim 1, wherein a circle of first semicircular groove (20) is formed in the second connector (11), a third groove (28) is formed in the top of the second connector (11), the second connector (11) is inserted into a bypass connector of a dialyzer, a clamping portion and a second sealing ring are sequentially arranged in the bypass connector of the dialyzer from outside to inside, the clamping portion is clamped in the first semicircular groove (20), and the second sealing ring is tightly sleeved on the third groove (28).

9. A dialysate sampling device according to claim 1, wherein the second connector (11) is connected to the second tube (10) at its end.

10. A dialysate sampling device according to claim 1, wherein the sampling interface (6) is connected to a sampling syringe.