CN217697452U

CN217697452U - Bridging device for heparin-free dialysis pipeline and blood return

Info

Publication number: CN217697452U
Application number: CN202123238995.XU
Authority: CN
Inventors: 巨晓华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-11-01
Anticipated expiration: 2031-12-20

Abstract

The utility model discloses a bridging device for a heparin-free dialysis pipeline and blood return, which comprises a main blood pipeline and an auxiliary blood pipeline, wherein the main blood pipeline and the auxiliary blood pipeline are detachably connected in parallel; this no heparin dialysis tubing and bridging device who returns blood only use main blood way pipe under the general condition, just connect supplementary blood way pipe to use when main blood way pipe takes place to block up, main blood way pipe can dismantle with supplementary blood way pipe and be connected, has solved the problem that venous kettle blockked up promptly, has reduced the unnecessary wasting of resources simultaneously, has saved the unnecessary expense for the patient.

Description

Bridging device for heparin-free dialysis pipeline and blood return

Technical Field

The utility model relates to a hemodialysis blood way pipe technical field especially discloses a bridging device of no heparin dialysis pipeline and return blood.

Background

Nowadays, uremia patients need to regularly perform dialysis of blood, in the dialysis process, the blood of the patients enters a dialyzer through an arterial pot under the action of a blood pump, and the dialyzed blood enters a venous pot and is then returned to the bodies of the patients. The blood tube is connected with a dialyzer for hemodialysis. Because the blood of a patient without heparin or with high blood coagulation is easy to coagulate blood, the filter tube of the blood path tube is blocked, and the blood entering the blood path tube can not flow back into the body. At this moment, medical personnel need to replace the blood vessel for the patient, and the blood in the former blood vessel is abandoned because of unable reuse to cause certain threat to patient's life health.

Therefore, a plurality of novel blood vessel structures are provided at present, and an auxiliary tube is additionally arranged on the basis of the original blood vessel to solve the problem of blockage of the original blood vessel. However, many of the existing novel blood vessels fixedly connect the original blood vessel and the auxiliary vessel, and there is a blood vessel for heparin-free hemodialysis as described in the document having the application number 2016207228901. However, the blood tube is not blocked in all heparin-free hemodialysis procedures, the fixed connection structure of the original blood tube and the auxiliary tube easily causes resource waste, increases treatment cost, and can only replace the whole blood tube if the original blood tube and the auxiliary tube are blocked, which still does not solve the problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects and shortcomings existing in the prior art, the utility model aims to provide a bridging device for a heparin-free dialysis pipeline and blood return.

In order to achieve the above object, the utility model discloses a bridging device for a heparin-free dialysis pipeline and blood return, which comprises a main blood pipeline and an auxiliary blood pipeline, wherein the main blood pipeline and the auxiliary blood pipeline are detachably connected in parallel;

the main blood path pipe comprises a first blood inlet pipe, a first blood outlet pipe and a first venous pot communicated with the first blood inlet pipe and the first blood outlet pipe, one end of the first blood inlet pipe is connected with a dialyzer, one end of the first blood outlet pipe is connected with an internal fistula puncture needle inserted into a human vein, one end of the first blood inlet pipe close to the first venous pot is provided with a T-shaped pipe, and one end of the first blood outlet pipe close to the first venous pot is provided with a one-way valve tee joint;

the auxiliary blood path pipe comprises a second blood inlet pipe, a second blood outlet pipe and a second venous pot communicated with the second blood inlet pipe and the second blood outlet pipe, the tail end of the second blood inlet pipe is connected with the T-shaped pipe to be communicated with the first blood inlet pipe, and the tail end of the second blood outlet pipe is connected with the one-way valve tee joint to be communicated with the first blood outlet pipe;

the first venous pot and the second blood outlet pipe are arranged in parallel.

Specifically, the T-shaped pipe comprises a straight-through pipe communicated with a first blood inlet pipe and a side branch pipe extending from one side of the straight-through pipe, the side branch pipe is communicated with the straight-through pipe, a spiral cover cap is detachably screwed at the free end of the side branch pipe and used for sealing the end part of the side branch pipe, the side branch pipe with the spiral cover cap taken down is used for being connected with a second blood inlet pipe, and the side branch pipe is provided with an elastic clamp which is used for clamping the side branch pipe so that fluid in the side branch pipe cannot circulate.

Specifically, the check valve tee bend includes input port, one-way input valve and the one-way output valve that communicates each other, and input port intercommunication first vein kettle, one-way output valve communicate in first play blood vessel keep away from one section of first vein kettle, and the spiro union has the spiral block can be dismantled to the free end of one-way input valve, and the spiral block is used for sealed one-way input valve, takes off the one-way input valve of spiral block and is used for being connected with second play blood vessel.

Specifically, the second goes into the one end that the second goes out the blood vessel and keeps away from the second vein kettle, the second goes out the one end that the second goes out the blood vessel and keeps away from the second vein kettle all is equipped with the connector, and the second goes into the blood vessel for the tip of spiro union collateral branch pipe in order to communicate first income blood vessel, second, and the connector that the second goes out the blood vessel is used for with the one-way input valve spiro union in order to communicate first play blood vessel, second play blood vessel, and the spiro union has the spiral block can be dismantled to the connector.

Specifically, a venous pressure sensor and an exhaust head are arranged at one end, close to a first blood inlet pipe, of a first venous pot, the venous pressure sensor and the exhaust head are arranged on the outer side of the first venous pot, a filter screen is arranged at one end, close to a first blood outlet pipe, of the first venous pot, and the first venous pot is filtered by the filter screen and then enters the first blood outlet pipe to be output.

Specifically, venous pressure sensor and exhaust head all are provided with the pipeline with first vein kettle intercommunication, are provided with the elasticity on the pipeline and press from both sides, and the elasticity presss from both sides the pipeline that is used for centre gripping venous pressure sensor and exhaust head so that the gas in the pipeline does not circulate.

Specifically, the configuration of the second intravenous drip is the same as the configuration of the first intravenous drip.

Specifically, an elastic clamp is arranged at a first blood inlet pipe between the T-shaped pipe and the first venous pot and used for clamping the first blood inlet pipe so that fluid in the first blood inlet pipe does not enter the first venous pot.

Specifically, the second blood inlet tube is provided with a resilient clip for gripping the second blood inlet tube so that fluid in the second blood inlet tube does not enter the second venous pot.

The utility model has the advantages that: no heparin dialysis pipeline and bridge device that returns blood in actual application in-process, if the first vein kettle of main blood way pipe takes place when blockking up, press from both sides tight first elastic clamp that goes into blood vessel, prevent first blood that goes into blood vessel to continue to flow in first vein kettle, go into vascular connection in the collateral branch pipe of T type pipe with the second of supplementary blood way pipe, the second goes out vascular connection in one-way input valve, open the elastic clamp of collateral branch pipe and the elastic clamp of second income blood vessel, make the blood after the dialysis return patient internal via supplementary blood way pipe, with this problem of solving the first vein kettle of main blood way pipe and blockking up. If the auxiliary blood tube is blocked, the operation can be repeated to replace the new auxiliary blood tube. This no heparin dialysis pipeline only uses main blood way pipe with bridging device of returning blood under the general condition, just connect supplementary blood way pipe to use when main blood way pipe takes place to block up, main blood way pipe and supplementary blood way pipe can be dismantled to be connected and take place to block up, be applicable to the dialyzer jam equally, if the dialyzer takes place to block up, for preventing that patient's blood from losing, can connect the connector at the exhaust port on the arterial pot of blood way pipe, connect second outlet blood vessel at venous pot exhaust port (venous pot does not have under the circumstances of blocking up) if the venous pot also takes place to block up at this moment and can connect the one-way input valve at the venous pot lower extreme to second outlet blood, so auxiliary line both can be used for venous pot to block up, also can be used for the urgent blood return that dialyzer blocks up or venous pot and dialyzer simultaneously, avoid losing of patient's blood, unnecessary waste of resources has been reduced simultaneously, unnecessary expense has been saved for the patient.

Drawings

FIG. 1 is a schematic view of the assembly structure of the present invention;

FIG. 2 is a schematic view of the main blood vessel of the present invention;

fig. 3 is a schematic structural view of the blood auxiliary tube of the present invention.

The reference numerals include:

1-main blood vessel 11-first blood inlet vessel 12-first blood outlet vessel

13-first venous pot 14-venous pressure sensor 15-exhaust head

16-filter screen 17-filter hole

2-auxiliary blood vessel 21-second blood inlet vessel 22-second blood outlet vessel

23-second venous pot 24-connector

3-T-shaped pipe 31-straight-through pipe 32-side branch pipe

33-screw cap 34-spring clip

4-one-way valve tee 41-input port 42-one-way input valve

43-one-way output valve.

Detailed Description

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and accompanying drawings, which are not intended to limit the present invention.

Referring to fig. 1 to 3, a heparin-free dialysis tube and blood return bridging device of the present invention includes a main blood tube 1 and an auxiliary blood tube 2, the main blood tube 1 and the auxiliary blood tube 2 are detachably connected in parallel, and the materials and sizes of the main blood tube 1 and the auxiliary blood tube 2 are the same as those of the existing blood tubes;

the main blood path pipe 1 comprises a first blood inlet pipe 11, a first blood outlet pipe 12 and a first venous pot 13 communicated with the first blood inlet pipe 11 and the first blood outlet pipe 12, one end of the first blood inlet pipe 11 is connected with a dialyzer, one end of the first blood outlet pipe 12 is connected with an internal fistula puncture needle inserted into a human vein, one end of the first blood inlet pipe 11 close to the first venous pot 13 is provided with a T-shaped pipe 3, one end of the first blood outlet pipe 12 close to the first venous pot 13 is provided with a one-way valve tee joint 4, the T-shaped pipe 3 and the one-way valve tee joint 4 both adopt the prior art structure, and the working principle is not described again;

the auxiliary blood path pipe 2 comprises a second blood inlet pipe 21, a second blood outlet pipe 22 and a second venous pot 23 communicated with the second blood inlet pipe 21 and the second blood outlet pipe 22, the tail end of the second blood inlet pipe 21 is connected with the T-shaped pipe 3 to be communicated with the first blood inlet pipe 11, and the tail end of the second blood outlet pipe 22 is connected with the one-way valve tee joint 4 to be communicated with the first blood outlet pipe 12;

the first venous pot 13 and the second blood outlet pipe 22 are arranged in parallel.

This bridging device of no heparin dialysis pipeline and blood return only uses main blood way pipe 1 under the general condition, just connects supplementary blood way pipe 2 to use when main blood way pipe 1 takes place to block up, if supplementary blood way pipe 2 also takes place to block up, can continue to change supplementary blood way pipe 2 of new.

Referring to fig. 2, the T-shaped tube 3 includes a straight tube 31 passing through the first blood inlet 11 and a side branch tube 32 extending from one side of the straight tube 31, the side branch tube 32 is communicated with the straight tube 31, a screw cap 33 is detachably screwed on a free end of the side branch tube 32, the screw cap 33 is used for sealing an end of the side branch tube 32, the side branch tube 32 with the screw cap 33 removed is used for being connected with the second blood inlet 21, the side branch tube 32 is provided with an elastic clamp 34, and the elastic clamp 34 is used for clamping the side branch tube 32 so that fluid in the side branch tube 32 cannot flow.

In general, the elastic clamp 34 of the side branch 32 is in a clamping state, and the blood of the patient is pumped out of the body, dialyzed by the dialysis equipment, flows through the first blood inlet pipe 11 and the straight pipe 31, enters the first venous pot 13, and then flows through the first blood outlet pipe 12 and flows back to the body of the patient; when the first venous pot 13 is blocked, the side branch 32 connects with the second blood inlet 21 and opens the elastic clamp 34, so that blood flows back to the patient through the auxiliary blood circuit tube 2.

Referring to fig. 2, the one-way valve tee 4 includes an input port 41, a one-way input valve 42 and a one-way output valve 43 which are communicated with each other, the input port 41 is communicated with the first venous pot 13, the one-way output valve 43 is communicated with a section of the first blood outlet pipe 12 far away from the first venous pot 13, a screw cap 33 is detachably screwed on a free end of the one-way input valve 42, the screw cap 33 is used for sealing the one-way input valve 42, and the one-way input valve 42 with the screw cap 33 removed is used for being connected with the second blood outlet pipe 22.

Generally, the blood flowing through the first venous pot 13 flows back to the patient through the first blood outlet pipe 12, the input port 41 of the one-way valve tee 4 and the one-way output valve 43; when the first venous pot 13 is blocked, the one-way input valve 42 is connected with the second blood outlet pipe 22, and the blood in the first blood inlet pipe 11 flows into the auxiliary blood circuit pipe 2 through the side branch pipe 32, then flows to the one-way output valve 43 through the one-way input valve 42 and finally flows back to the patient. The one-way input valve 42 and the one-way output valve 43 are arranged, so that the blood of a patient can be effectively prevented from flowing back to the first venous pot 13 or the second venous pot 23 when the auxiliary blood path pipe 2 is replaced and connected, and the occurrence of medical accidents is reduced.

Referring to fig. 3, connectors 24 are respectively disposed at an end of the second blood inlet tube 21 far from the second venous pot 23 and an end of the second blood outlet tube 22 far from the second venous pot 23, the connector 24 of the second blood inlet tube 21 is used for screwing the end of the side branch tube 32 to communicate with the first blood inlet tube 11 and the second blood inlet tube 21, the connector 24 of the second blood outlet tube 22 is used for screwing with the one-way input valve 42 to communicate with the first blood outlet tube 12 and the second blood outlet tube 22, and the connector 24 is detachably screwed with the screw cap 33. The connector 24 is a connector structure of a blood vessel and an internal fistula needle, which will not be described herein.

Referring to fig. 1 to 2, a venous pressure sensor 14 and an exhaust head 15 are disposed at an end of the first venous pot 13 close to the first blood inlet tube 11, the venous pressure sensor 14 and the exhaust head 15 are disposed outside the first venous pot 13, a filter screen 16 is disposed at an end of the first venous pot 13 close to the first blood outlet tube 12, and the first venous pot 13 is filtered by the filter screen 16 and then enters the first blood outlet tube 12 for output. The exhaust head 15 is used for exhausting air, and the venous pressure sensor 14 is used for detecting the pressure of venous blood backflow; the filter screen 16 is provided with a plurality of filter holes 17, the filter holes 17 are circular, rectangular, oval or rhombic, and the filter screen 16 can further filter blood and prevent thrombus from falling off and entering the body of a patient.

Referring to fig. 1 to 2, the venous pressure sensor 14 and the exhaust head 15 are both provided with a pipe communicated with the first venous pot 13, and the pipe is provided with an elastic clip 34, and the elastic clip 34 is used for clamping the pipes of the venous pressure sensor 14 and the exhaust head 15 so as to prevent the gas in the pipes from flowing.

Referring to fig. 1, the second venous pot 23 has the same structure as the first venous pot 13.

Referring to fig. 1 to 2, an elastic clip 34 is disposed at the first blood inlet tube 11 between the T-shaped tube 3 and the first venous pot 13, and the elastic clip 34 is used for clipping the first blood inlet tube 11 so that the fluid in the first blood inlet tube 11 does not enter the first venous pot 13.

Referring to fig. 1 and 3, the second blood inlet tube 21 is provided with an elastic clip 34, and the elastic clip 34 is used for clamping the second blood inlet tube 21 so that the fluid in the second blood inlet tube 21 does not enter the second venous pot 23. The spring clip 34 is a clip commonly used in the art.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. A bridging device of no heparin dialysis pipeline and blood return which characterized in that: the blood circulation assisting device comprises a main blood path pipe (1) and an auxiliary blood path pipe (2), wherein the main blood path pipe (1) and the auxiliary blood path pipe (2) are detachably connected in parallel;

the main blood path pipe (1) comprises a first blood inlet pipe (11), a first blood outlet pipe (12) and a first venous pot (13) communicated with the first blood inlet pipe (11) and the first blood outlet pipe (12), one end of the first blood inlet pipe (11) is connected to a dialyzer, one end of the first blood outlet pipe (12) is connected to an internal fistula puncture needle inserted into a human vein, one end of the first blood inlet pipe (11) close to the first venous pot (13) is provided with a T-shaped pipe (3), and one end of the first blood outlet pipe (12) close to the first venous pot (13) is provided with a one-way valve tee (4);

the auxiliary blood path pipe (2) comprises a second blood inlet pipe (21), a second blood outlet pipe (22) and a second venous pot (23) communicated with the second blood inlet pipe (21) and the second blood outlet pipe (22), the second blood inlet pipe (21) is connected with the T-shaped pipe (3) to be communicated with the first blood inlet pipe (11), and the second blood outlet pipe (22) is connected with the one-way valve tee joint (4) to be communicated with the first blood outlet pipe (12);

the first venous pot (13) and the second blood outlet pipe (22) are arranged in parallel.

2. The heparin-free dialysis tubing and flashback bridging device of claim 1, wherein: the T-shaped pipe (3) comprises a straight-through pipe (31) communicated with the first blood inlet pipe (11) and a side branch pipe (32) extending from one side of the straight-through pipe (31), the side branch pipe (32) is communicated with the straight-through pipe (31), a spiral cover cap (33) is detachably screwed at the free end of the side branch pipe (32), the spiral cover cap (33) is used for sealing the end part of the side branch pipe (32), the side branch pipe (32) with the spiral cover cap (33) taken down is used for being connected with the second blood inlet pipe (21), the side branch pipe (32) is provided with an elastic clamp (34), and the elastic clamp (34) is used for clamping the side branch pipe (32) so that fluid in the side branch pipe (32) cannot flow.

3. The heparin-free dialysis tubing and flashback bridging device of claim 2, wherein: one-way valve tee bend (4) are including input port (41) that communicate each other, one-way input valve (42) and one-way output valve (43), input port (41) intercommunication first vein kettle (13), one-way output valve (43) communicate in first play blood vessel (12) keep away from one section of first vein kettle (13), the spiro union has spiral block (33) can be dismantled to the free end of one-way input valve (42), spiral block (33) are used for sealed one-way input valve (42), one-way input valve (42) of taking off spiral block (33) are used for being connected with second play blood vessel (22).

4. The heparin-free dialysis tubing and blood return bridging device of claim 3, wherein: one end of the second blood inlet pipe (21) far away from the second venous pot (23) and one end of the second blood outlet pipe (22) far away from the second venous pot (23) are respectively provided with a connector (24), the connector (24) of the second blood inlet pipe (21) is used for screwing the end part of the side branch pipe (32) to communicate with the first blood inlet pipe (11) and the second blood inlet pipe (21), the connector (24) of the second blood outlet pipe (22) is used for screwing the one-way input valve (42) to communicate with the first blood outlet pipe (12) and the second blood outlet pipe (22), and the connector (24) is detachably screwed with a spiral cover cap (33).

5. The heparin-free dialysis tubing and flashback bridging device of claim 1, wherein: one end of the first vein pot (13) close to the first blood inlet pipe (11) is provided with a vein pressure sensor (14) and an exhaust head (15), the vein pressure sensor (14) and the exhaust head (15) are arranged on the outer side of the first vein pot (13), one end of the first vein pot (13) close to the first blood outlet pipe (12) is provided with a filter screen (16), and the first vein pot (13) is filtered by the filter screen (16) and then enters the first blood outlet pipe (12) to be output.

6. The heparin-free dialysis tubing and flashback bridging device of claim 5, wherein: the venous pressure sensor (14) and the exhaust head (15) are respectively provided with a pipeline communicated with the first venous pot (13), the pipelines are provided with an elastic clamp (34), and the elastic clamps (34) are used for clamping the pipelines of the venous pressure sensor (14) and the exhaust head (15) so that gas in the pipelines can not flow.

7. The heparin-free dialysis tubing and flashback bridging device of claim 1, wherein: the second venous pot (23) has the same construction as the first venous pot (13).

8. The heparin-free dialysis tubing and flashback bridging device of claim 1, wherein: an elastic clamp (34) is arranged at the first blood inlet pipe (11) between the T-shaped pipe (3) and the first venous pot (13), and the elastic clamp (34) is used for clamping the first blood inlet pipe (11) so that fluid in the first blood inlet pipe (11) does not enter the first venous pot (13).

9. The heparin-free dialysis tubing and flashback bridging device of claim 1, wherein: the second blood inlet pipe (21) is provided with an elastic clamp (34), and the elastic clamp (34) is used for clamping the second blood inlet pipe (21) so that fluid in the second blood inlet pipe (21) does not enter the second venous pot (23).