CN215230875U - Novel extracorporeal circulation ultrafiltration pipeline - Google Patents
Novel extracorporeal circulation ultrafiltration pipeline Download PDFInfo
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- CN215230875U CN215230875U CN202120345941.4U CN202120345941U CN215230875U CN 215230875 U CN215230875 U CN 215230875U CN 202120345941 U CN202120345941 U CN 202120345941U CN 215230875 U CN215230875 U CN 215230875U
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Abstract
The utility model discloses a novel extracorporeal circulation ultrafiltration pipeline, which comprises an ultrafilter and a multi-section combined pipeline connected with the ultrafilter, wherein the multi-section combined pipeline comprises a part, a pipe and a pipe, wherein the part is a straight joint with the diameter of 2/16X 2/16 or a pipe with the length of 40-50cm, the diameter of 3/16 and straight joints with the diameter of 2/16X 3/16 at both ends; the second tube is 40-60cm in length and 2/16 in diameter, and only one end of the second tube is provided with a luer connector; ③ the length of the number tube is 5-10cm, the diameter is 2/16, and only one end is provided with an ultrafiltration joint; the fourth tube is 40-60cm in length and 2/16 in diameter, one end of the fourth tube is provided with an ultrafiltration joint, and the other end of the fourth tube is provided with a luer joint; the extracorporeal circulation ultrafiltering pipeline consists of No. two pipes, No. one part, No. three pipes, ultrafilter and No. four pipes connected successively; compared with the prior art, the device obviously reduces the pre-charging amount of the pipeline, solves the problems of blood dilution and increased blood consumption of a variant bank to a certain extent, and is temporarily assembled when needed in the operation, thus having simple and convenient operation, strong controllability and safety.
Description
Technical Field
The utility model belongs to the technical field of medical instrument for the extracorporeal circulation, especially, relate to a novel extracorporeal circulation ultrafiltration pipeline.
Background
The extracorporeal circulation is a life support technology that the blood of the cardiotomy is drained to the outside of the body through the upper and lower vena cava cannulas, and is returned to the internal arterial system after gas exchange, temperature regulation and filtration, and the aim of the extracorporeal circulation is to maintain the blood supply of tissues and organs of the whole body when the open-heart surgery is carried out. At present, before extracorporeal circulation, after an extracorporeal circulation pipeline, a membrane oxygenator and a blood storage tank are assembled, an ultrafilter and a pipeline of the ultrafilter are generally required to be pre-installed, pre-charging and exhausting are reserved, temporary assembly cannot be carried out under the condition that an ultrafiltration system is not pre-installed and ultrafiltration is temporarily required in the operation, the pipeline is complex, operation is inconvenient, meanwhile, the pre-charging amount is large, and the conditions of blood dilution and increase of the use amount of foreign body base blood exist.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model provides a novel extracorporeal circulation ultrafiltration pipeline, compared with the prior art, the priming volume of the pipeline is obviously reduced, and the problems of blood dilution and the increase of the blood consumption of a variant stock are solved to a certain extent, so that the blood source can be saved to a certain extent, the related complications after the infusion of the variant blood can be reduced, and the cost of patients can be saved; meanwhile, the device can be temporarily assembled when needed, does not need to be assembled in advance, and is simple and convenient to operate, high in controllability and safe.
The utility model relates to a novel extracorporeal circulation ultrafiltration pipeline, which comprises an ultrafilter and a multi-section combined pipeline connected to the ultrafilter, wherein the multi-section combined pipeline comprises a part, a pipe and a pipe, wherein the part is a straight joint with the diameter of 2/16X 2/16 or a pipe with the length of 40-50cm, the diameter of 3/16 and straight joints with the diameter of 2/16X 3/16 at both ends; the second tube is 40-60cm in length and 2/16 in diameter, and only one end of the second tube is provided with a luer connector; ③ the length of the number tube is 5-10cm, the diameter is 2/16, and only one end is provided with an ultrafiltration joint; the fourth tube is 40-60cm in length and 2/16 in diameter, one end of the fourth tube is provided with an ultrafiltration joint, and the other end of the fourth tube is provided with a luer joint; the extracorporeal circulation ultrafiltration pipeline is formed by sequentially connecting a No. two pipe, a No. one piece, a No. three pipe, an ultrafilter and a No. four pipe; the ultrafilter and the pipelines are connected by adopting the joints which are convenient to assemble, and can be temporarily assembled when needed without being assembled in advance, so that the operation is simple and convenient, and the controllability is strong and safe.
Furthermore, a pipe (V) is arranged on a water outlet of the venous end of the ultrafilter, the pipe (V) has the length of 60-80cm and the diameter of 3/16, and the outer end of the pipe is connected with a water bag; the volume of the water bag is 2L, so that the water and metabolic wastes in the ultrafilter can be discharged in time and collected in the water bag in a centralized manner, and the use is convenient. The length and the diameter of each pipeline are redesigned, except for the parts of the ultrafilter, the drainage pipeline and the water bag, the pipeline precharge amount is 6.8ml-10.4ml under the condition of not needing the driving of the ultrafiltration pump, and the pipeline precharge amount is 14ml-19.4ml under the condition of needing the driving of the ultrafiltration pump.
Furthermore, the member I is a pipe which is 40-50cm long, 3/16 in diameter and provided with straight joints 2/16 x 3/16 in diameter at two ends, is arranged in a pump groove of the ultrafiltration pump and is provided with conveying power by the ultrafiltration pump; after the perfusion pressure is reduced due to the shunting effect generated by opening the extracorporeal circulation ultrafiltration pipeline, the ultrafiltration pump is tightened until the perfusion pressure is increased to the perfusion pressure value before the extracorporeal circulation ultrafiltration pipeline is opened, and therefore the tightness of the ultrafiltration pump is adjusted.
Furthermore, a three-way joint is arranged on the downstream of the membrane oxygenator on an artery end pipeline of a blood storage tank of the extracorporeal circulation system, a branch pipeline of the three-way joint is provided with a No. I straight joint with a side hole, and a No. I three-way switch is arranged on the side hole of the No. I straight joint; a No. two straight joint with a side hole is arranged on a vein end pipeline of a blood storage tank of the extracorporeal circulation system, and a No. two three-way switch is arranged on the side hole of the No. two straight joint; the ultrafiltration pipeline is connected between the No. one three-way switch and the No. two three-way switch, wherein the No. two pipes are connected with the No. one three-way switch through luer connectors of the No. two pipes, and the No. two pipes are connected with the No. two three-way switch through luer connectors of the No. two pipes; conventional ultrafiltration or equilibrium ultrafiltration can be carried out as desired, with modified ultrafiltration occurring after the extracorporeal circulation has been stopped.
The utility model has the advantages that: compared with the prior art, the novel extracorporeal circulation ultrafiltration pipeline of the utility model obviously reduces the precharge volume of the pipeline, solves the problems of blood dilution and the increase of the blood consumption of the variant bank to a certain extent, thereby saving the blood source to a certain extent, reducing the related complications after the infusion of the variant blood and the like, and also saving the cost of patients; meanwhile, the device can be temporarily assembled when needed, does not need to be assembled in advance, and is simple and convenient to operate, high in controllability and safe.
Drawings
In order to illustrate the embodiments of the present invention or the prior art more clearly, the drawings used before opening the extracorporeal circulation ultrafiltration circuit in the embodiments or the prior art description will be briefly described below. In the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of an extracorporeal circulation system;
FIG. 2 is a schematic diagram of an extracorporeal circulation ultrafiltration circuit that does not require the drive of an ultrafiltration pump;
FIG. 3 is a schematic diagram of the structure of an extracorporeal circulation ultrafiltration pipeline which needs to be driven by an ultrafiltration pump;
FIG. 4 is a schematic view of the construction of (r) number piece (a pipe 40-50cm in length, 3/16 in diameter, with straight joints 2/16X 3/16 at both ends);
FIG. 5 is a schematic view of the structure of part (straight joint with diameter 2/16 × 2/16);
FIG. 6 is a schematic view of the structure of the second tube;
FIG. 7 is a schematic view of the structure of number tube;
FIG. 8 is a schematic view of the structure of tube No. 4;
FIG. 9 is a schematic view of the structure of the pipe and the water bag.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
As shown in fig. 1-9: the novel extracorporeal circulation ultrafiltration pipeline comprises an ultrafilter 9 and a multi-section combined pipeline connected to the ultrafilter 9, wherein the multi-section combined pipeline comprises a part 7, a pipe 6, a pipe 8 and a pipe 10, wherein the part 7 is a straight joint with the diameter of 2/16 × 2/16 or a pipe with the length of 40-50cm, the diameter of 3/16 and the diameter of 2/16 × 3/16 at two ends; the second tube 6 is 40-60cm in length and 2/16 in diameter, and only one end of the second tube is provided with a luer connector; ③ the length of the No. 8 tube is 5-10cm, the diameter is 2/16, and only one end is provided with an ultrafiltration joint; the fourth tube 10 is 40-60cm in length and 2/16 in diameter, one end of the tube is provided with an ultrafiltration joint, and the other end of the tube is provided with a luer joint; the extracorporeal circulation ultrafiltration pipeline is formed by sequentially connecting a No. 6 pipe, a No. 7 part, a No. 8 pipe, an ultrafilter 9 and a No. 10 pipe; the ultrafilter 9 and each pipeline are connected by adopting a joint convenient for assembly, and can be temporarily assembled when needed without being assembled in advance, so that the operation is simple and convenient, and the controllability is strong and safe.
In this embodiment, a pipe 11 is arranged on the outlet of the venous end of the ultrafilter 9, the pipe 11 has a length of 60-80cm and a diameter of 3/16, and the outer end is connected with a water bag 12; the volume of the water bag 12 is 2L, so that the water and the metabolic waste in the ultrafilter 9 can be discharged in time and collected in the water bag 12 in a centralized manner, and the use is convenient. The length and the diameter of each pipeline are redesigned, the part except the ultrafilter 9, the drainage pipeline and the water bag 12 is 6.8ml-10.4ml under the condition of not needing the driving of the ultrafiltration pump, and the part is 14ml-19.4ml under the condition of needing the driving of the ultrafiltration pump.
In this embodiment, the first member 7 is a straight pipe having a length of 40-50cm, a diameter of 3/16, and diameters of 2/16 × 3/16 at both ends, and the pipe is installed in a pump tank of the ultrafiltration pump 13 and is supplied with power by the ultrafiltration pump 13; after the perfusion pressure is reduced due to the shunting effect generated by opening the extracorporeal circulation ultrafiltration pipeline, the ultrafiltration pump 13 is tightened until the perfusion pressure is increased to the perfusion pressure value before the extracorporeal circulation ultrafiltration pipeline is opened, and therefore the tightness of the ultrafiltration pump 13 is adjusted.
In the embodiment, a three-way joint is arranged on the downstream of a membrane oxygenator on an artery end pipeline of a blood storage tank of an extracorporeal circulation system, a branch pipeline of the three-way joint is provided with a No. 1 straight joint with side holes, and a No. 2 three-way switch is arranged on the side holes of the No. 1 straight joint; a No. II straight joint 4 with a side hole is arranged on a vein end pipeline of a blood storage tank of the extracorporeal circulation system, and a No. II three-way switch 5 is arranged on the side hole of the No. II straight joint 4; the ultrafiltration pipeline is connected between the No. 2 three-way switch and the No. 5 three-way switch, wherein the No. 6 pipe is connected with the No. 2 three-way switch through a luer connector, and the No. 10 pipe is connected with the No. 5 three-way switch through a luer connector; conventional ultrafiltration or equilibrium ultrafiltration can be carried out as desired, with modified ultrafiltration occurring after the extracorporeal circulation has been stopped.
The operation principle and the process are as follows:
(1) before extracorporeal circulation, after the extracorporeal circulation pipeline, the membrane oxygenator and the blood storage tank are assembled, a No. 1 three-way switch 2 is arranged at a side hole position of a side hole straight joint in a side branch pipeline of an artery end of an aorta cannula connected with a blood outlet of the membrane oxygenator (in a closed position); a No. two three-way switch 5 (in a closed position) is arranged at the side hole position of the side hole straight joint at the vein end connected with the vein blood inlet of the blood storage tank.
(2) For the ultrafiltration pipeline which does not need to be driven by the ultrafiltration pump 13, the following connections are adopted:
three-way switch 2+ pipe 6+ part 7 (straight joint with diameter 2/16 × 2/16) + pipe 8+ ultrafilter 9+ pipe 10+ three-way switch 5,
the number 11 is a drain pipe connected with a vein end drain port of the ultrafilter 9;
(3) the ultrafiltration pipeline which needs to be driven by the ultrafiltration pump 13 adopts the following connection:
three-way switch 2+ pipe 6+ member 7 (pipe with length of 40cm, diameter of 3/16 and straight joint with diameter of 2/16 x 3/16 at both ends) + pipe 8+ ultrafilter 9+ pipe 10+ three-way switch 5,
the number 11 is a drain pipe connected with a vein end drain port of the ultrafilter 9;
(4) before or at any time in the extracorporeal circulation, the first three-way switch 2 close to the arterial end can be used for connecting the extracorporeal circulation ultrafiltration pipeline to the second three-way switch 5, and then the extracorporeal circulation ultrafiltration pipeline is pre-filled and exhausted and is closed for standby.
(5) For ultrafiltration which needs to be driven by the ultrafiltration pump 13, the ultrafiltration roller pump is completely loosened at this time, then the member 7 is installed in a pump groove of the ultrafiltration pump 13 (under the premise that the conditions such as perfusion flow and the like are not changed, the tightness of the ultrafiltration pump 13 is adjusted according to the change of the perfusion pressure on the aorta pipeline), under the premise that the conditions such as the perfusion flow and the like are not changed, the perfusion pressure value is recorded, then the standby ultrafiltration pipeline is opened and closed, at this time, the perfusion pressure is reduced due to shunting of the extracorporeal circulation ultrafiltration pipeline, then the ultrafiltration pump 13 is gradually tightened until the perfusion pressure is just increased to the previously recorded perfusion pressure value, and the tightness of the ultrafiltration pump 13 is adjusted.
(6) Conventional ultrafiltration or equilibrium ultrafiltration can then be carried out as required, with modified ultrafiltration occurring after the extracorporeal circulation has been stopped.
(7) Conventional ultrafiltration or equilibrium ultrafiltration can be performed as needed before or at any time during the extracorporeal circulation: by driving the main pump 3 and/or the ultrafiltration pump 13 and filtering through the ultrafiltration filter 9, the blood is pumped out from the arterial end, concentrated and filtered, and then flows back to the venous end blood storage tank, and the filtered water, metabolic waste and the like are discharged through a drain pipe of the ultrafiltration filter 9.
(8) Modified ultrafiltration is carried out for about 10 minutes after the extracorporeal circulation is stopped: at the moment, a pipeline from the No. 5 three-way switch to a venous blood inlet of the blood storage tank is clamped by a pipeline clamp, the blood storage tank, the membrane oxygenator, the extracorporeal circulation pipeline and blood in a patient are pumped out from a driven artery end, concentrated and filtered by the main pump 3 and/or the ultrafiltration pump 13 and filtered by the ultrafiltration filter 9, then the blood returns to the patient with the venous end vena cava cannula right atrium, and filtered water, metabolic waste and the like are discharged through a drain pipe of the ultrafiltration filter 9.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (4)
1. A novel extracorporeal circulation ultrafiltration pipeline is characterized in that: the multi-section combined pipeline comprises a first part, a second pipe, a third pipe and a fourth pipe, wherein the first part is a straight joint with the diameter of 2/16 & 2/16 or a pipe with the length of 40-50cm, the diameter of 3/16 and the diameter of 2/16 & 3/16 at both ends; the second tube is 40-60cm in length and 2/16 in diameter, and only one end of the second tube is provided with a luer connector; ③ the length of the number tube is 5-10cm, the diameter is 2/16, and only one end is provided with an ultrafiltration joint; the fourth tube is 40-60cm in length and 2/16 in diameter, one end of the fourth tube is provided with an ultrafiltration joint, and the other end of the fourth tube is provided with a luer joint; the extracorporeal circulation ultrafiltering pipeline consists of No. two pipes, No. one part, No. three pipes, one ultrafilter and No. four pipes connected successively.
2. The novel extracorporeal circulation ultrafiltration circuit of claim 1, wherein: the venous end water outlet of the ultrafilter is provided with a pipe (V), the pipe (V) has a length of 60-80cm and a diameter of 3/16, and the outer end of the pipe is connected with a water bag.
3. The novel extracorporeal circulation ultrafiltration circuit of claim 1, wherein: the first member is a pipe with a straight joint, the length of the pipe is 40-50cm, the diameter of the pipe is 3/16, and the two ends of the pipe are provided with diameters 2/16 x 3/16; after the perfusion pressure is reduced due to the shunting effect generated by opening the extracorporeal circulation ultrafiltration pipeline, the ultrafiltration pump is tightened until the perfusion pressure is increased to the perfusion pressure value before the extracorporeal circulation ultrafiltration pipeline is opened, and therefore the tightness of the ultrafiltration pump is adjusted.
4. The novel extracorporeal circulation ultrafiltration circuit of claim 1, wherein: a three-way joint is arranged on the downstream of the membrane oxygenator on an artery end pipeline of a blood storage tank of the extracorporeal circulation system, a branch pipeline of the three-way joint is provided with a No. I straight joint with a side hole, and a No. I three-way switch is arranged on the side hole of the No. I straight joint; a No. two straight joint with a side hole is arranged on a vein end pipeline of a blood storage tank of the extracorporeal circulation system, and a No. two three-way switch is arranged on the side hole of the No. two straight joint; the ultrafiltration pipeline is connected between the three-way switch I and the three-way switch II, wherein the tube II is connected with the three-way switch I through a luer connector of the tube II, and the tube II is connected with the three-way switch II through a luer connector of the tube II.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345941.4U CN215230875U (en) | 2021-02-07 | 2021-02-07 | Novel extracorporeal circulation ultrafiltration pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120345941.4U CN215230875U (en) | 2021-02-07 | 2021-02-07 | Novel extracorporeal circulation ultrafiltration pipeline |
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| CN215230875U true CN215230875U (en) | 2021-12-21 |
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| CN202120345941.4U Active CN215230875U (en) | 2021-02-07 | 2021-02-07 | Novel extracorporeal circulation ultrafiltration pipeline |
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- 2021-02-07 CN CN202120345941.4U patent/CN215230875U/en active Active
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