CN215995051U - Negative pressure drainage mechanism for peritoneal dialysis system - Google Patents
Negative pressure drainage mechanism for peritoneal dialysis system Download PDFInfo
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- CN215995051U CN215995051U CN202121200033.2U CN202121200033U CN215995051U CN 215995051 U CN215995051 U CN 215995051U CN 202121200033 U CN202121200033 U CN 202121200033U CN 215995051 U CN215995051 U CN 215995051U
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Abstract
The utility model relates to the technical field of peritoneal dialysis, and discloses a negative pressure drainage mechanism for a peritoneal dialysis system, which comprises: the drainage pipeline is used for guiding the waste liquid in the abdominal cavity of the human body to the waste liquid collecting device, and a negative pressure cavity is arranged on the drainage pipeline; at least one waste liquid collecting device for receiving waste liquid discharged from the abdominal cavity of the human body; the negative pressure generator is connected with the negative pressure cavity, provides intermittent negative pressure or continuous negative pressure for the negative pressure cavity, and the pressure provided by the negative pressure generator is variable. The utility model has simple structure, silence and low energy consumption, and is beneficial to thoroughly emptying the waste liquid in the abdominal cavity of the human body.
Description
Technical Field
The utility model relates to the technical field of peritoneal dialysis equipment, in particular to a negative pressure drainage mechanism for a peritoneal dialysis system.
Background
Peritoneal Dialysis (PD) is to regularly and regularly inject prepared dialysate into the peritoneal cavity of a patient through a catheter by utilizing the characteristic that the peritoneum is used as a semi-permeable membrane, and because the concentration gradient difference of solutes exists at two sides of the peritoneum, the solute at one side with high concentration moves to the other side with low concentration (diffusion effect); the water moves from the hypotonic side to the hypertonic side (osmosis). The peritoneal dialysis solution is continuously replaced to achieve the purposes of removing in vivo metabolites and toxic substances and correcting water and electrolyte balance disorder. Most of peritoneal dialysis (peritoneal dialysis for short) patients in China are ambulatory continuous peritoneal dialysis (CAPD) patients. CAPD requires 3-4 exchanges of peritoneal dialysis fluid daily, which seriously affects the normal working life of the patient.
With the continuous improvement of the economic level of China and the pursuit of the freedom of life of patients, the selection of more expensive Automatic Peritoneal Dialysis (APD) treatment becomes a new trend. APD broadly refers to all treatments performed by automated machines instead of manually performing a peritoneal dialysis procedure. It can be divided into 4 modes of Nighttime Intermittent Peritoneal Dialysis (NIPD), Intermittent Peritoneal Dialysis (IPD), Continuous Cycle Peritoneal Dialysis (CCPD) and Tidal Peritoneal Dialysis (TPD). Among these 4 modes, NIPD is performed only at night, the patient is in a dry abdominal state during the day, the number of dialysis connection operations is minimized, and the degree of freedom provided to the patient is maximized, which is the most common APD mode.
The present invention relates to a drainage mechanism for an Automated Peritoneal Dialysis (APD) system for use in clinical treatments involving administering parenteral fluids during peritoneal dialysis. Currently, there are two types of peritoneal dialysis apparatuses known, a powered peritoneal dialysis machine and a gravity type peritoneal dialysis machine.
However, the existing gravity type peritoneal dialysis machine only depends on the height difference for drainage, which is not beneficial to the full discharge of dialysate in the abdominal cavity;
prior powered peritoneal dialysis machines have employed at least one pump that is hydraulically operated to accomplish the inflow of fluid to, or the outflow of fluid from, the patient's peritoneal cavity. That is, in the conventional power type peritoneal dialysis machine, the liquid pump works continuously, and the power generated by the pump participates in the process of the whole liquid flowing into the abdominal cavity of the patient and also participates in the process of the whole liquid flowing out of the abdominal cavity of the patient. The automatic peritoneal dialysis treatment is mostly carried out at night, and the work of a pump can generate noise to influence the rest of a patient. Moreover, the pump works continuously, and the energy consumption is higher.
In addition, the existing power peritoneal dialysis machine has the problem that the instantaneous pressure is high during liquid injection and waste liquid drainage, which easily causes discomfort or pain to a patient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a negative pressure drainage mechanism for a peritoneal dialysis system, which has the advantages of simple structure, silence and low energy consumption, and is beneficial to thoroughly emptying the waste liquid in the abdominal cavity of a human body.
In order to achieve the technical effects, the utility model provides a negative pressure drainage mechanism for a peritoneal dialysis system, which comprises:
the drainage pipeline is used for guiding the waste liquid in the abdominal cavity of the human body to the waste liquid collecting device, and a negative pressure cavity is arranged on the drainage pipeline;
at least one waste liquid collecting device for receiving waste liquid discharged from the abdominal cavity of the human body;
the negative pressure generator is connected with the negative pressure cavity, provides intermittent negative pressure or continuous negative pressure for the negative pressure cavity, and the pressure provided by the negative pressure generator is variable.
As an improvement of the scheme, the negative pressure provided by the negative pressure generator is 0-10 KPa.
As an improvement of the above scheme, the height of the human abdominal cavity from the ground is L2, the height of the waste liquid collecting device from the ground is L4, and a height difference exists between L2 and L4;
the power of the drainage pipeline is provided by the initial negative pressure provided by the negative pressure generator to the drainage pipeline and the height difference between L2 and L4.
As a modification of the above scheme, the negative pressure cavity is arranged along the vertical direction.
As an improvement of the above scheme, the negative pressure generator comprises a shell, wherein the shell is provided with an air inlet and an air outlet, and a negative pressure pump, a water filtering valve and a pressure release valve are arranged in the shell; the negative pressure cavity is connected with an air inlet of the negative pressure generator.
As an improvement of the scheme, a pressure sensor is arranged in a shell of the negative pressure generator and used for measuring the pressure provided by the negative pressure generator to the negative pressure cavity.
As an improvement of the above scheme, the drainage pipeline comprises a first drainage branch pipeline, a second drainage branch pipeline and a negative pressure interface end, the first drainage branch pipeline is communicated with one end of the negative pressure cavity, and the second drainage branch pipeline and the negative pressure interface end are communicated with the other end of the negative pressure cavity;
the negative pressure cavity is connected with the air inlet of the negative pressure generator through a negative pressure interface end.
As an improvement of the scheme, the first drainage branch pipeline is provided with a one-way valve.
As an improvement of the scheme, the pipe diameter of the drainage pipeline is 3-10 mm.
The implementation of the utility model has the following beneficial effects:
the utility model provides a negative pressure drainage mechanism for a peritoneal dialysis system, which is characterized in that a negative pressure cavity is arranged on a drainage pipeline, the negative pressure cavity is connected with a negative pressure generator, the negative pressure generator provides intermittent negative pressure or continuous negative pressure for the negative pressure cavity, and the pressure provided by the negative pressure generator is variable. By adopting the drainage device, the drainage of the waste liquid is realized by utilizing power, the power does not participate in the whole drainage process, the power is intermittently intervened only when needed, an initial negative pressure is given as a drive, when the whole drainage pipeline is filled with liquid, the negative pressure cavity can generate continuous negative pressure, and the power of the negative pressure generator can be stopped at the moment, so that the liquid in the abdominal cavity is continuously drained to the waste liquid collection device through the drainage pipeline.
Therefore, the negative pressure drainage mechanism has simple structure, effectively reduces the energy consumption of products, is quieter, and is beneficial to thoroughly emptying the waste liquid in the abdominal cavity of the human body. Moreover, the intermittent intervention of the power can greatly relieve the discomfort or pain of the patient.
Drawings
FIG. 1 is a schematic structural view of a negative pressure drainage mechanism of the present invention;
FIG. 2 is a schematic view of the construction of the drainage line of the present invention;
FIG. 3 is a schematic structural view of the negative pressure generator of the present invention;
fig. 4 is a cross-sectional view of the negative pressure generator of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below.
Referring to fig. 1, the present invention provides a negative pressure drainage mechanism for a peritoneal dialysis system, comprising:
the drainage pipeline 1 is used for guiding the waste liquid in the abdominal cavity of the human body to the waste liquid collecting device, and a negative pressure cavity 11 is arranged on the drainage pipeline;
at least one waste liquid collecting device 2 for receiving waste liquid discharged from the abdominal cavity of the human body;
the negative pressure generator 3 is connected with the negative pressure cavity 11, the negative pressure generator 3 provides intermittent negative pressure or continuous negative pressure for the negative pressure cavity 11, and the pressure provided by the negative pressure generator 3 is variable.
The drainage device utilizes power to realize waste liquid drainage, the power does not participate in the whole drainage process, the power is intermittently intervened only when needed, the negative pressure generator 3 gives an initial negative pressure as driving, the negative pressure cavity 11 can generate continuous negative pressure when the whole drainage pipeline 1 is filled with liquid, and the power of the negative pressure generator 3 can be stopped at the moment, so that the liquid in the abdominal cavity is continuously drained to the waste liquid collecting device 2 through the drainage pipeline.
The negative pressure generator 3 preferably provides a negative pressure of 0-10 Kpa, more preferably 0-8 Kpa, and specifically may be 1Kpa, 2Kpa, 3Kpa, 4Kpa, 5Kpa, 6Kpa, 7Kpa, but is not limited thereto. The negative pressure generator 3 controls the time when the negative pressure is generated in the negative pressure cavity, the magnitude of the negative pressure and the duration time of the negative pressure, and controls the flow rate of the liquid in the drainage pipeline 1 through the change of the negative pressure.
The height of the human abdominal cavity from the ground is L2, the height of the waste liquid collecting device from the ground is L4, the height difference is formed between L2 and L4, and L2 is larger than L4. The power of the drainage line is preferably provided by the initial negative pressure provided by the negative pressure generator to the drainage line together with the height difference between L2 and L4.
The negative pressure chamber 11 is disposed in a vertical direction. After the negative pressure generator 3 is started and the negative pressure cavity 11 reaches the specified pressure, the negative pressure generator 3 stops working; the liquid of the drainage pipeline 1 continuously flows into the negative pressure cavity 11 under the pressure of the negative pressure cavity 11, and the liquid of the negative pressure cavity 11 continuously flows out under the action of gravity, so that the negative pressure cavity 11 is maintained within a preset pressure range. Under the action of the stable negative pressure maintained by the negative pressure cavity 11, the waste liquid discharged from the abdominal cavity of the human body continuously flows into the negative pressure cavity 11, and the liquid in the negative pressure cavity 11 also continuously flows into the waste liquid collecting device, so that a balanced state is achieved.
The drainage pipeline is communicated with the drainage pipeline and the waste liquid collecting device, the power can be stopped, the negative pressure cavity can provide continuous negative pressure, and the liquid in the abdominal cavity is continuously drained into the waste liquid collecting device through the drainage pipeline. It should be noted that the negative pressure generating unit of the present invention provides an initial negative pressure driving, that is, the negative pressure only has a driving effect and does not need to exist continuously.
Preferably, as shown in fig. 2, the drainage pipeline 1 includes a first drainage branch pipeline 12, a second drainage branch pipeline 13 and a negative pressure interface end 14, the first drainage branch pipeline 12 is communicated with one end of the negative pressure cavity 11, and the second drainage branch pipeline 13 and the negative pressure interface end 14 are communicated with the other end of the negative pressure cavity 11;
and the first drainage branch pipeline 12 is provided with a one-way valve 15 and is connected with the waste liquid collecting device 2.
The pipe diameter of the drainage pipeline 1 is 3-10 mm. Above-mentioned pipe diameter size's design, the control optimization of the velocity of flow that waste liquid collection device was derived to the waste liquid that can match human abdominal cavity, and then guarantees peritoneal dialysis's curative effect.
Referring to fig. 3 and 4, the negative pressure generator 3 includes a housing 31, an air inlet 32 and an air outlet 33 are provided on the housing 31, and a negative pressure pump 34, a water filter valve 35 and a pressure release valve 36 are provided in the housing 31; the negative pressure cavity 11 is connected with the air inlet 32 of the negative pressure generator 3 through the negative pressure interface end 14, so that variable negative pressure is applied to the negative pressure cavity 11.
Preferably, a pressure sensor 37 is arranged in the housing of the negative pressure generator 3 for measuring the pressure provided by the negative pressure generator to the negative pressure cavity.
It should be noted that, this embodiment only shows one embodiment of the negative pressure generator, and the negative pressure generator with other structure may be adopted in the present invention as long as it generates variable negative pressure. And the shown negative pressure pump 34, the water filter valve 35, the pressure release valve 36 and the pressure sensor 37 are selected according to the conventional design.
In summary, the treatment process of peritoneal dialysis of the present invention is as follows:
the dialysate of the liquid supply bag 4 is led into the human abdominal cavity 5, and the power thereof is provided by gravity and/or additional power;
the power of the waste liquid discharge of the human abdominal cavity 5 is provided by the initial negative pressure drive provided by the negative pressure generator 3 to the negative pressure cavity 11 and the height difference between the human abdominal cavity and the waste liquid collecting device. After the negative pressure generator 3 is started and the negative pressure cavity 11 reaches the specified pressure, the negative pressure generator 3 stops working; the liquid in the drainage pipeline 1 continuously flows into the negative pressure cavity 11 under the pressure of the negative pressure cavity 11, and the liquid in the negative pressure cavity 11 continuously flows out under the action of gravity. In addition, when the pressure in the negative pressure chamber 11 changes, the negative pressure generator 3 may be activated again to adjust the pressure in the negative pressure chamber 11.
Therefore, the drainage device realizes waste liquid drainage by utilizing power, the power does not participate in the whole drainage process, the power is intermittently intervened only when needed, the structure is simple, the energy consumption of the product is effectively reduced, and the noise is quieter. And the negative pressure is only started initially, the whole process is stable and quiet, the peritoneal dialysis experience of a patient can be greatly improved, the problem that the waste liquid in the abdominal cavity of the human body is not thoroughly emptied can be solved due to the negative pressure, and discomfort and pain are not generated in the emptying process due to controllable pressure.
The negative pressure drainage mode provided by the utility model enables the prescription of dialysis treatment to have greater flexibility, can individually set the amount of discharged waste liquid, can timely adjust the amount of dialysis liquid suitable for the treatment requirement of a patient, enables the patient to automatically exchange peritoneal dialysis liquid during sleep, and can perform corresponding adjustment of treatment according to the peritoneal capacity and peritoneal function of the patient, thereby achieving full dialysis and improving the life quality of the patient.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (9)
1. A negative pressure drainage mechanism for a peritoneal dialysis system, comprising:
the drainage pipeline is used for guiding the waste liquid in the abdominal cavity of the human body to the waste liquid collecting device, and a negative pressure cavity is arranged on the drainage pipeline;
at least one waste liquid collecting device for receiving waste liquid discharged from the abdominal cavity of the human body;
the negative pressure generator is connected with the negative pressure cavity, provides intermittent negative pressure or continuous negative pressure for the negative pressure cavity, and the pressure provided by the negative pressure generator is variable.
2. The negative pressure drainage mechanism for peritoneal dialysis system of claim 1, wherein the negative pressure generator provides a negative pressure of 0-10 KPa.
3. The negative pressure drainage mechanism for peritoneal dialysis system of claim 1 or 2, wherein the height of the human abdominal cavity from the ground is L2, the height of the waste liquid collection device from the ground is L4, and there is a height difference between L2 and L4;
the power of the drainage pipeline is provided by the initial negative pressure provided by the negative pressure generator to the drainage pipeline and the height difference between L2 and L4.
4. The negative pressure drainage mechanism for a peritoneal dialysis system of claim 1, wherein the negative pressure cavity is disposed in a vertical direction.
5. The negative pressure drainage mechanism for peritoneal dialysis system of claim 1, wherein the negative pressure generator comprises a housing, the housing having an air inlet and an air outlet, the housing having a negative pressure pump, a strainer valve, and a pressure relief valve; the negative pressure cavity is connected with an air inlet of the negative pressure generator.
6. The negative pressure drainage mechanism of claim 5, wherein a pressure sensor is disposed in the housing of the negative pressure generator for measuring the pressure provided by the negative pressure generator to the negative pressure chamber.
7. The negative pressure drainage mechanism for peritoneal dialysis system of claim 1, wherein the drainage line comprises a first drainage sub-line, a second drainage sub-line, and a negative pressure port end, the first drainage sub-line is in communication with one end of the negative pressure cavity, the second drainage sub-line and the negative pressure port end are in communication with the other end of the negative pressure cavity;
the negative pressure cavity is connected with the air inlet of the negative pressure generator through a negative pressure interface end.
8. The negative pressure drainage mechanism for peritoneal dialysis system of claim 7 wherein the first drainage branch line is provided with a one-way valve.
9. The negative pressure drainage mechanism for peritoneal dialysis system of claim 1 wherein the drainage line has a tube diameter of 3-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200033.2U CN215995051U (en) | 2021-05-31 | 2021-05-31 | Negative pressure drainage mechanism for peritoneal dialysis system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121200033.2U CN215995051U (en) | 2021-05-31 | 2021-05-31 | Negative pressure drainage mechanism for peritoneal dialysis system |
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| CN215995051U true CN215995051U (en) | 2022-03-11 |
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| CN202121200033.2U Active CN215995051U (en) | 2021-05-31 | 2021-05-31 | Negative pressure drainage mechanism for peritoneal dialysis system |
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2021
- 2021-05-31 CN CN202121200033.2U patent/CN215995051U/en active Active
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