CN210056943U - Closed blood return hemodialysis pipeline - Google Patents
Closed blood return hemodialysis pipeline Download PDFInfo
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- CN210056943U CN210056943U CN201920689784.1U CN201920689784U CN210056943U CN 210056943 U CN210056943 U CN 210056943U CN 201920689784 U CN201920689784 U CN 201920689784U CN 210056943 U CN210056943 U CN 210056943U
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Abstract
The utility model discloses a closed blood return hemodialysis pipeline, which comprises an arterial blood tube and a venous blood tube, wherein the arterial blood tube comprises a pre-pump arterial blood tube, a blood pump, a first post-pump arterial blood tube, an arterial pot and a second arterial blood tube; a normal saline input branch pipe is arranged between the arterial blood tube before the pump and the liquid inlet of the blood pump; the position of the pre-pump arterial blood tube close to the arterial puncture needle is also provided with two first blood return filtering branch tubes and two second blood return filtering branch tubes which are arranged at intervals, a first blood return control clamp is arranged on the pre-pump arterial blood tube between the first blood return filtering branch tube and the second blood return filtering branch tube, and a second blood return control clamp is respectively arranged on the first blood return filtering branch tube and the second blood return filtering branch tube; the blood return filter is connected with the first blood return filtering branch pipe and the second blood return filtering branch pipe at two ends respectively. The utility model has the advantages of structural design is reasonable, can filter the blood that returns, avoids the clot directly to get into the patient internal, reduces thrombosis risk.
Description
Technical Field
The utility model relates to the technical field of medical equipment, it is very much related to a closed hemodialysis pipeline that returns blood.
Background
Hemodialysis is an important treatment means for patients with acute and chronic renal insufficiency, and is to lead blood of the patients out of the body, establish extracorporeal circulation and achieve the purpose of removing toxins and water in the body through a dialyzer. The blood return operation is a process of returning extracorporeally circulated blood to the patient after the hemodialysis treatment is finished. The blood returning operation modes are divided into open type and closed type blood returning according to whether the blood returning operation mode is in contact with the outside air or not. At present, most of domestic hospitals adopt the hemodialysis tube shown in the attached drawing 1 to carry out closed blood return, and the specific operation steps include that the blood pump 3 is shut down, the control clamp on the physiological saline input branch tube 2 is opened, the physiological saline is utilized to return the blood in the arterial blood tube 1 at the front end of the blood pump 3 to the body of a patient, the clamp (not shown in the figure) on the arterial puncture needle is clamped or the control clamp arranged on the arterial blood tube 1 is clamped, the blood pump 3 is opened, and the physiological saline is driven by the blood pump 3 to return the blood in the arterial blood tube 1 at the rear end of the blood pump 3 to the body of the patient through the arterial pot 5, the dialyzer 6, the venous pot 8 and the venous blood tube 7.
However, since the saline input branch tube 2 is located on the arterial blood tube 1 at the front end of the blood pump 3 and is disposed close to the blood pump 3, when blood is returned, blood in the arterial blood tube 1 at the front end of the blood pump 3 is directly returned to the patient, and since the hemodialysis time is long, there is a possibility that a clot will exist in the arterial blood tube 1 at the front end of the blood pump 3, and there is a risk of thrombus formation when the blood is input into the patient. In addition, the venous return blood end machine is provided with an air alarm device, air enters the venous return blood end machine to alarm and stop the blood pump, the machine clamps a venous end loop pipe, the arterial end is used for leading blood, the machine is not provided with the air alarm device, air can exist in the blood in the arterial blood tube 1 at the front end of the blood pump 3, and when the blood returns, the risk of air returning to the blood tube still exists only by visual observation, so that air embolism and even death are caused.
Disclosure of Invention
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a structural design is reasonable, can filter back blood, avoids blood clot or air direct access patient internal, reduces the closed hemodialysis pipeline that returns blood of thrombus or air embolism formation risk.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a closed blood return hemodialysis pipeline comprises an arterial blood tube and a venous blood tube, wherein the arterial blood tube comprises a pre-pump arterial blood tube, a blood pump, a first post-pump arterial blood tube, an arterial pot and a second arterial blood tube; one end of the pre-pump arterial blood tube is connected with an arterial puncture needle, and the other end of the pre-pump arterial blood tube is connected with a liquid inlet of the blood pump; a liquid outlet of the blood pump is connected with a liquid inlet of the arterial pot through the first post-pump arterial blood tube, and a liquid outlet of the arterial pot is connected with a hemodialyzer through the second arterial blood tube; a normal saline input branch pipe is also arranged between the pre-pump arterial blood tube and the liquid inlet of the blood pump, and a control clamp for clamping the normal saline input branch pipe is arranged on the normal saline input branch pipe; the arterial puncture needle is characterized in that the position of the arterial blood tube before the pump, which is close to the arterial puncture needle, is also provided with a first blood return filtering branch tube and a second blood return filtering branch tube which are arranged at intervals, a first blood return control clamp is arranged on the arterial blood tube before the pump between the first blood return filtering branch tube and the second blood return filtering branch tube, and a second blood return control clamp is respectively arranged on the first blood return filtering branch tube and the second blood return filtering branch tube; the blood return filter is characterized by further comprising a blood return filter, and two ends of the blood return filter are respectively connected with the first blood return filtering branch pipe and the second blood return filtering branch pipe.
Adopt above-mentioned structure, during the dialysis, open first blood return control clamp, return blood control clamp with two seconds and close, avoid blood to enter into first blood return and filter branch pipe and second blood return and filter the branch pipe, adopt traditional dialysis mode to dialyse. When returning blood, the blood pump is shut down, the first blood return control clamp is clamped, the pre-pump arterial blood tube is clamped, the two second blood return control clamps are opened, the control clamps on the physiological saline input branch tubes are opened, and the blood in the pre-pump arterial blood tube is back infused to the patient body by utilizing the physiological saline under the action of gravity. The blood returning is filtered by the blood returning filter, so that blood clots in the blood are filtered, the blood clots are prevented from entering the body of a patient, and the risk of thrombosis is reduced.
Further, the length of the pre-pump arterial blood tube between the first blood return filtering branch tube and the second blood return filtering branch tube is 1.2-2 times of the length of the first blood return control clamp.
Therefore, the length of the pre-pump arterial blood tube connected with the blood return filter in parallel can be shortened as much as possible, and the blood residue in the pre-pump arterial blood tube can be reduced.
Furthermore, an acute angle is formed between the first blood return filtering branch pipe and the end, facing the artery puncture needle, of the arterial blood tube before the pump and the second blood return filtering branch pipe.
Therefore, in the dialysis process, the blood output by the artery cannot directly rush into the first blood return filtering branch pipe and the second blood return filtering branch pipe, so that the blood residue at the joint in the dialysis process can be reduced as much as possible, and the formation of blood clots is avoided.
Further, the blood return filter is a venous pot.
The venous pot and the arterial pot on the existing closed hemodialysis pipeline can filter blood, so that blood in the dialysis process is prevented from entering a patient body through the venous pot when entering the patient body, and the venous pot is used as a blood return filter to ensure that the blood return meets the requirement of a filtering grade.
To sum up, the utility model has the advantages of structural design is reasonable, can filter back blood, avoids the clot directly to get into the patient internal, reduces the thrombosis risk.
Drawings
Fig. 1 is a schematic structural view of a conventional hemodialysis line.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 and 4 are schematic structural diagrams of two other embodiments of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
In the specific implementation: as shown in fig. 2, a closed blood return hemodialysis line comprises an arterial blood tube 1 and a venous blood tube 7, wherein the arterial blood tube 1 comprises a pre-pump arterial blood tube, a blood pump 3, a first post-pump arterial blood tube, an arterial pot 5 and a second arterial blood tube; one end of the pre-pump arterial blood tube is connected with an arterial puncture needle, and the other end of the pre-pump arterial blood tube is connected with a liquid inlet of the blood pump 3; the liquid outlet of the blood pump 3 is connected with the liquid inlet of the arterial pot 5 through the first post-pump arterial blood tube, and the liquid outlet of the arterial pot 5 is connected to the hemodialyzer 6 through the second arterial blood tube.
The venous blood tube 7 comprises a first venous blood tube connected to the liquid outlet of the hemodialyzer 6, the other end of the first venous blood tube is connected to the liquid inlet of the venous pot 8, the liquid outlet of the venous pot 8 is connected to a second venous blood tube, and the other end of the second venous blood tube is connected to a venous puncture needle.
Artery blood pipe behind the first pump with the junction of the liquid outlet of blood pump 3 still is provided with the heparin input branch pipe 4 that is used for connecting heparin, the artery blood pipe before the pump with the junction of the inlet of blood pump 3 still is provided with the normal saline input branch pipe 2 that is used for connecting normal saline, heparin input branch pipe 4 with all be equipped with the control clamp that is used for pressing from both sides the branch pipe on the normal saline input branch pipe 2.
The venous pot 8 and the arterial pot 5 are both provided with exhaust pipes for exhausting, and exhaust control clamps are arranged on the exhaust pipes.
The position of the pre-pump arterial blood tube close to the arterial puncture needle is also provided with a first blood return filtering branch tube 10 and a second blood return filtering branch tube 11 which are arranged at intervals, a first blood return control clamp is arranged on the pre-pump arterial blood tube between the first blood return filtering branch tube 10 and the second blood return filtering branch tube 11, and a second blood return control clamp is respectively arranged on the first blood return filtering branch tube 10 and the second blood return filtering branch tube 11; the blood return filter is characterized by further comprising a blood return filter 9, and two ends of the blood return filter 9 are respectively connected with the first blood return filtering branch pipe 10 and the second blood return filtering branch pipe 11. The length of the pre-pump arterial blood tube between the first and second return filtering branches 10 and 11 is 1.5 times the length of the first return control clip. The first blood return filtering branch pipe 10 and the second blood return filtering branch pipe 11 are arranged on the pre-pump arterial blood pipe, incline towards one end of the arterial puncture needle, and form an acute angle with one end of the pre-pump arterial blood pipe towards the arterial puncture needle.
The utility model discloses a following mode uses, presss from both sides with the second blood control clamp and all opens with first blood control clamp of returning earlier, carries out preflushing and exhaust to whole hemodialysis pipeline (containing artery blood liquid pipe 1 and vein blood liquid pipe 7). During dialysis, the two second blood return control clamps are clamped to close the first blood return filtering branch pipe and the second blood return filtering branch pipe, the first blood return control clamp is kept in an open state, arterial blood flows into the blood pump 3 through a pre-pump arterial blood tube between the first blood return filtering branch pipe 10 and the second blood return filtering branch pipe 11, and hemodialysis is performed according to the operation of the existing dialysis mode.
When blood is returned from the machine, the operation steps are as follows: open the control clamp on the normal saline input branch pipe, get back to the dialyzer with the blood behind blood pump 3, avoid the blood to be in quiescent condition for a long time behind the pump, have the blood coagulation risk, can arrange some little air of transfusion system or joint department when returning the pump earlier back blood, it is safer before returning the pump again. And (3) closing the blood pump 3, opening the two second blood return control clamps, communicating the first blood return filtering branch pipe and the second blood return filtering branch pipe with the pre-pump arterial blood tube, and clamping the first blood return control clamp to block the pre-pump arterial blood tube. The control clip on the normal saline input branch pipe is opened, and the normal saline is utilized to return the blood in the arterial blood tube before the pump to the patient body under the action of gravity. Because the first blood return filtering branch pipe and the second blood return filtering branch pipe are pre-filled with physiological saline and do not have a blood clot, the blood in the arterial blood tube before the pump is filtered by the blood return filter, the blood clot and the air in the blood are filtered, the blood clot or the air is prevented from entering the body of a patient, and the risk of forming thrombus or air embolism is reduced.
In specific implementation, the blood return filter 9 may also be a venous pot, as shown in fig. 3.
In specific implementation, the blood return filter 9 may also be an air filter in a precision infusion set, as shown in fig. 4, the volume of the air filter is smaller than that of a venous pot, and the lengths of the first blood return filtering branch pipe 10 and the second blood return filtering branch pipe 11 can be shortened.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. A closed blood return hemodialysis pipeline comprises an arterial blood tube (1) and a venous blood tube (7), wherein the arterial blood tube (1) comprises a pre-pump arterial blood tube, a blood pump (3), a first post-pump arterial blood tube, an arterial pot (5) and a second arterial blood tube; one end of the pre-pump arterial blood tube is connected with an arterial puncture needle, and the other end of the pre-pump arterial blood tube is connected with a liquid inlet of the blood pump (3); the liquid outlet of the blood pump (3) is connected with the liquid inlet of the arterial pot (5) through the first post-pump arterial blood tube, and the liquid outlet of the arterial pot (5) is connected with a hemodialyzer through the second arterial blood tube; a normal saline input branch pipe (2) is also arranged between the pre-pump arterial blood tube and a liquid inlet of the blood pump (3), and a control clamp for clamping the normal saline input branch pipe is arranged on the normal saline input branch pipe (2); the arterial blood tube before the pump is characterized in that a position, close to the arterial puncture needle, of the arterial blood tube before the pump is also provided with a first blood return filtering branch tube (10) and a second blood return filtering branch tube (11) which are arranged at intervals, a first blood return control clamp is arranged on the arterial blood tube before the pump between the first blood return filtering branch tube (10) and the second blood return filtering branch tube (11), and the first blood return filtering branch tube (10) and the second blood return filtering branch tube (11) are respectively provided with a second blood return control clamp; the blood return filter is characterized by further comprising a blood return filter (9), and two ends of the blood return filter (9) are respectively connected with the first blood return filtering branch pipe (10) and the second blood return filtering branch pipe (11).
2. The closed return hemodialysis line of claim 1, wherein the length of the pre-pump arterial blood line between the first return filter branch (10) and the second return filter branch (11) is 1.2-2 times the length of the first return control clip.
3. The closed return hemodialysis circuit of claim 1, wherein the first (10) and second (11) return filter branches are at an acute angle with the end of the pre-pump arterial blood line facing the arterial needle.
4. The closed return hemodialysis line of claim 1, wherein the return filter (9) is a venous pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689784.1U CN210056943U (en) | 2019-05-15 | 2019-05-15 | Closed blood return hemodialysis pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689784.1U CN210056943U (en) | 2019-05-15 | 2019-05-15 | Closed blood return hemodialysis pipeline |
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| Publication Number | Publication Date |
|---|---|
| CN210056943U true CN210056943U (en) | 2020-02-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920689784.1U Expired - Fee Related CN210056943U (en) | 2019-05-15 | 2019-05-15 | Closed blood return hemodialysis pipeline |
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| CN (1) | CN210056943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230474A (en) * | 2021-05-17 | 2021-08-10 | 曾庆飞 | Hemodialysis pump-uninterrupted bidirectional blood return pipeline |
-
2019
- 2019-05-15 CN CN201920689784.1U patent/CN210056943U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113230474A (en) * | 2021-05-17 | 2021-08-10 | 曾庆飞 | Hemodialysis pump-uninterrupted bidirectional blood return pipeline |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200214 Termination date: 20210515 |
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| CF01 | Termination of patent right due to non-payment of annual fee |