Peritoneal dialysis solution pipeline capable of accurately controlling quantity for children and realizing pressurized perfusion for adults

Abstract

The utility model relates to the technical field of peritoneal dialysis, in particular to a peritoneal dialysis fluid pipeline capable of accurately controlling the amount of children and achieving pressurized perfusion for adults, which comprises a waste fluid bag, an injector, a fluid inlet bag and a connecting pipe, a first catheter is connected between the waste fluid bag and the connecting pipe, and a second catheter is connected between a nipple of the injector and the connecting pipe. And a third catheter is connected between the nipple of the injector and the liquid inlet bag. After an operator connects the connecting pipe to an external short pipe of a patient and waste liquid in the abdominal cavity of the patient is completely discharged, the operator clamps and closes the first catheter and the second catheter and opens the third catheter at the same time, the operator can suck quantitative dialysate into the injector, and finally the third catheter is closed and the second catheter is opened, so that the dialysate in the abdominal cavity of the patient is completely discharged. An operator can inject the dialysate in the injector into the abdominal cavity of a patient, quantitative injection of dialysis is achieved, and the problem that it is difficult for the operator to inject the dialysate with the accurate amount into the abdominal cavity of an underage child is solved on the whole.

Description

Technical Field

[0001] The present application relates to the field of peritoneal dialysis technology, and in particular to a peritoneal dialysis fluid circuit that can accurately control the volume of children and can be pressurized for perfusion in adults. Background Art

[0002] Peritoneal dialysis is a therapy used for patients with renal failure. It uses the semipermeability of the peritoneum to introduce an appropriate amount of dialysate into the peritoneal cavity and retain it for a period of time. Water and solutes are exchanged with the help of the solute gradient and osmotic gradient in the blood in the peritoneal capillaries and the dialysate in the peritoneal cavity to remove accumulated metabolic products and correct water, electrolyte and acid-base imbalances.

[0003] During peritoneal dialysis, a double-bag, disposable "Y"-shaped tubing system is often used for dialysate delivery. However, in peritoneal dialysis treatment for young children, due to their small stature and weight, and smaller abdominal cavity capacity, precise instillation of dialysate is required, making it difficult for the operator to precisely instill the correct amount of dialysate into the peritoneal cavity. Utility Model Content

[0004] In order to improve the problem that it is difficult for operators to infuse an accurate amount of dialysate into the peritoneal cavity of young children, the present application provides a peritoneal dialysis fluid circuit that can accurately control the amount for children and can be pressurized for infusion in adults.

[0005] The present application provides a peritoneal dialysis fluid circuit that allows precise volume control for children and pressurized perfusion for adults, using the following technical solutions:

[0006] A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults, comprising a waste fluid bag, a syringe, a fluid inlet bag for containing dialysis fluid, and a connecting tube for connecting to a patient's external short tube; a first catheter is connected between the waste fluid bag and the connecting tube, a second catheter is connected between the nipple of the syringe and the connecting tube, and a third catheter is connected between the nipple of the syringe and the fluid inlet bag.

[0007] By adopting the above technical solution, after connecting the connecting tube to the patient's external short tube, the operator first controls the second catheter to close, and then opens the first catheter and the patient's external short tube, so that the waste fluid in the patient's abdominal cavity can be discharged into the waste fluid bag through the first catheter; after the waste fluid in the patient's abdominal cavity is discharged, the operator clamps and closes the first catheter and the second catheter, and opens the third catheter at the same time, so that the operator can draw a fixed amount of dialysate into the syringe, and finally closes the third catheter and opens the second catheter, so that the operator can inject a fixed amount of dialysate into the patient's abdominal cavity, thereby achieving quantitative injection of dialysis and overall improving the problem that it is difficult for the operator to inject a precise amount of dialysate into the abdominal cavity of young children.

[0008] When an adult's drainage abnormality requires vigorous flushing, the operator can first connect the connecting tube to the patient's external short tube, drain the patient's abdominal waste fluid into the waste fluid bag through the catheter, then close the first and second catheters and open the third catheter. The operator can then draw dialysate into the syringe. Finally, the second catheter is opened, the third catheter is closed, and the operator firmly presses the plunger of the syringe to quickly push the dialysate into the patient's abdominal cavity, completing the second flush. The operator can repeat the above flushing steps according to the flushing effect until the desired flushing effect is achieved.

[0009] Optionally, a first one-way switch is provided in the second conduit for allowing the dialysate in the syringe to flow into the second conduit in a one-way manner.

[0010] By adopting the above technical solution, when the operator draws the dialysate into the syringe, the first one-way switch helps prevent the liquid in the second catheter from flowing into the syringe. The operator can smoothly draw the dialysate in the liquid bag into the syringe, which helps reduce the operator's control over the opening and closing of the second catheter.

[0011] Optionally, a second one-way switch is provided in the third catheter for allowing the dialysate in the third catheter to flow into the syringe in a one-way manner.

[0012] By adopting the above technical solution, when the operator needs to inject the dialysate in the syringe into the patient's abdominal cavity through the second catheter, the second one-way switch can prevent the dialysate in the syringe from flowing into the fluid inlet bag, thereby ensuring that the dialysate in the syringe is injected into the patient's abdominal cavity and reducing the operator's control over the opening and closing of the third catheter.

[0013] Optionally, the first one-way switch is a first one-way flap.

[0014] By adopting the above technical solution, when the syringe draws out the dialysate, the liquid in the second catheter can cause the first rubber valve to automatically close, which helps to prevent the liquid in the second catheter from flowing back into the syringe; when the syringe pushes out the liquid, the first rubber valve automatically opens under the pressure of the liquid, which facilitates the injection of the liquid in the syringe into the second catheter.

[0015] Optionally, the first one-way valve is located in the middle of the second conduit.

[0016] By adopting the above technical solution, clean dialysate can be retained between the first one-way valve and the syringe, which is helpful to ensure the cleanliness of the dialysate drawn into the syringe when the syringe draws the dialysate, thereby reducing contamination of the syringe.

[0017] Optionally, the second one-way switch is a second one-way flap.

[0018] By adopting the above technical solution, when the syringe draws out the dialysate, the dialysate in the inlet bag flows toward the syringe, and the second one-way valve can be opened under the pressure of the dialysate, thereby facilitating the dialysate in the inlet bag to flow into the syringe; when the syringe injects the dialysate, the second one-way valve closes under the pressure of the dialysate, thereby helping to prevent the dialysate in the syringe from flowing back into the inlet bag.

[0019] Optionally, a hanging hole is provided on the liquid inlet bag.

[0020] By adopting the above technical solution, the liquid inlet bag can be conveniently hung on the hook by means of the hanging hole, which is beneficial for placing the liquid inlet bag.

[0021] Optionally, the first conduit has a rubber section.

[0022] By adopting the above technical solution, the rubber segment has better flexibility, which is conducive to ensuring the sealing and closing effect of the first conduit when the rubber segment is clamped and fixed.

[0023] Optionally, the syringe includes a needle tube, and a plurality of scale lines are provided on the needle tube.

[0024] By adopting the above technical solution, with the help of the scale lines, the operator can extract different amounts of dialysate from the fluid bag as needed. The operator can conveniently inject the required amount of dialysate into the abdominal cavity of young children according to the different ages of the children.

[0025] Optionally, a foldable handle is provided in the third catheter.

[0026] By adopting the above technical solution, the inlet bag can be sealed with the help of the foldable handle. After the foldable handle is broken, the dialysate in the inlet bag can flow into the third catheter.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. After connecting the connecting tube to the patient's external short tube, the operator first controls the second tube to close, then opens the first tube and the patient's external short tube, allowing the waste fluid in the patient's abdominal cavity to be discharged into the waste fluid bag through the first tube. After the waste fluid in the patient's abdominal cavity is discharged, the operator clamps and closes the first and second tubes, and simultaneously opens the third tube. The operator can draw a fixed amount of dialysate into the syringe. Finally, the operator closes the third tube and opens the second tube, allowing the operator to inject a fixed amount of dialysate into the patient's abdominal cavity. This achieves quantitative injection of dialysis, and overall alleviates the problem of operators having difficulty in injecting a precise amount of dialysate into the abdominal cavity of young children.

[0029] 2. When an adult's drainage is abnormal and a strong flush is required, the operator can first connect the connecting tube to the patient's external short tube, drain the waste fluid in the patient's abdominal cavity into the waste fluid bag through the catheter, then close the first and second catheters and open the third catheter. The operator can then draw the dialysate into the syringe, finally open the second catheter and close the third catheter. The operator presses the syringe's plunger hard to quickly push the dialysate into the patient's abdominal cavity, thus completing the second flush. The operator can repeat the above flushing steps according to the flushing effect until the desired flushing effect is achieved;

[0030] 3. With the help of the scale lines, the operator can extract different amounts of dialysate from the fluid inlet bag as needed. The operator can conveniently inject the required amount of dialysate into the abdominal cavity of young children according to the different ages of the children. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0033] Figure 2 This is a partial structural diagram showing the injection tube connection.

[0034] Figure numerals: 1, waste liquid bag; 2, syringe; 21, needle tube; 211, scale line; 22, push rod; 3, liquid inlet bag; 31, plastic ring; 311, hanging hole; 4, connecting tube; 5, first catheter; 6, second catheter; 61, first one-way switch; 7, third catheter; 71, foldable handle; 72, second one-way switch; 8, mounting tube. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-2 This application is described in further detail.

[0036] The present application discloses a peritoneal dialysis fluid circuit that can accurately control the volume of children and can be pressurized for perfusion in adults. Figure 1A peritoneal dialysis fluid pipeline with precise volume control for children and pressurized perfusion for adults includes a waste liquid bag 1, a syringe 2, a liquid inlet bag 3 and a connecting tube 4. The connecting tube 4 is used to be detachably fixedly connected to an external short tube on the patient's abdomen. The liquid inlet bag 3 is filled with dialysate to be used. A first catheter 5 is connected between the waste liquid bag 1 and the connecting tube 4, a second catheter 6 is connected between the nipple of the syringe 2 and the connecting tube 4, and a third catheter 7 is connected between the nipple of the syringe 2 and the liquid inlet bag 3. After the operator connects the connecting tube 4 to the patient's external short tube, he first controls the second catheter 5 to close, and then opens the first catheter 5 and the patient's external short tube, so that the waste fluid in the patient's abdominal cavity can be discharged into the waste fluid bag 1 through the first catheter 5; after the waste fluid in the patient's abdominal cavity is discharged, the operator clamps and closes the first catheter 5 and the second catheter 6, and opens the third catheter 7 at the same time, and the operator can draw a certain amount of dialysate into the syringe 2, and finally closes the third catheter 7 and opens the second catheter 6, and the operator can inject the dialysate in the syringe 2 into the patient's abdominal cavity, thereby achieving quantitative injection of dialysis, and overall improving the problem that the operator has difficulty in injecting an accurate amount of dialysate into the abdominal cavity of young children.

[0037] Before dialyzing the patient, the pipeline needs to be vented. The operator first connects the connecting tube 4 to the patient's external short tube, then closes the second catheter 6. After the waste liquid in the patient's abdominal cavity can flow into the waste liquid bag 1 through the first catheter 5, the switch of the patient's external short tube is turned off, and the third catheter 7 is opened at the same time, so that the dialysate can be drawn into the syringe 2; finally, the third catheter 7 is closed and the second catheter 6 is opened, and the nipple of the syringe 2 is controlled to face upward, so that the air and dialysate in the syringe 2 can be pushed into the second catheter 6 in turn. The dialysate in the second catheter 6 flows into the waste liquid bag 1 through the first catheter 5, and the air in the first catheter 5, the second catheter 6, the third catheter 7 and the syringe 2 is emptied, thus achieving the purpose of venting the pipeline.

[0038] When an adult's drainage is abnormal and requires vigorous flushing, the operator can first connect the connecting tube 4 to the patient's external short tube, drain the waste fluid in the patient's abdominal cavity into the waste fluid bag 1 through the catheter, then close the first catheter 5 and the second catheter 6, and open the third catheter 7. The operator can draw the dialysate into the syringe 2, and finally open the second catheter 6 and close the third catheter 7. The operator presses the push rod 22 of the syringe 2 hard to quickly push the dialysate into the patient's abdominal cavity, thereby completing the second flushing. The operator can repeat the above flushing steps according to the flushing effect until the desired flushing effect is achieved.

[0039] Reference Figure 1The second conduit 6 is provided with a first one-way switch 61, which is used to ensure that the dialysate in the syringe 2 flows in a single direction into the second conduit 6. When the operator draws the dialysate into the syringe 2, the first one-way switch 61 helps prevent the liquid in the second conduit 6 from flowing back into the syringe 2, allowing the operator to smoothly draw the dialysate from the fluid bag 3 into the syringe 2. When the operator injects the dialysate, the first one-way switch 61 is turned on, allowing the dialysate in the syringe 2 to be injected into the second conduit 6. This reduces the operator's need to control the opening and closing of the second conduit 6, optimizing the operator's operating steps.

[0040] The first one-way switch 61 is a first one-way valve, which can be any one-way valve in the prior art. In the embodiment of the present application, the first one-way valve adopts the principle of a heart valve and includes a first connecting ring and a first sealing sheet. The first sealing sheet can be a rubber sheet. The outer side of the first connecting ring is sealed with the second conduit 6. The first sealing sheet is flexibly connected to the first connecting ring. The size of the first sealing sheet is larger than the inner diameter of the first connecting ring. The first sealing sheet is located on the side of the first connecting ring close to the connecting tube 4, and the first sealing sheet seals the opening where the inner diameter of the first connecting ring is located.

[0041] When the syringe 2 extracts the dialysate, the first sealing piece is tightly attached to the first connecting ring under the pressure of the dialysate, preventing the dialysate in the second catheter 6 from flowing back into the syringe 2; when the syringe 2 injects the dialysate, the first sealing piece moves away from the first connecting ring under the pressure of the dialysate, the first connecting ring opens, and the dialysate in the syringe 2 can be injected into the second catheter 6, realizing the one-way conduction of the first one-way valve.

[0042] Furthermore, the first one-way valve is located in the middle of the second catheter 6, so that clean dialysate can be retained between the first one-way valve and the syringe 2. When the syringe 2 draws the dialysate, it is helpful to ensure the cleanliness of the dialysate drawn into the syringe 2, thereby reducing the contamination of the syringe 2.

[0043] A foldable handle 71, also known as a fluid bag folding head or a medical foldable tube, is mounted within the third catheter 7. A medical foldable tube is a component of an infusion bag with a foldable flushing structure. The foldable tube assembly comprises a foldable tube body and a foldable head. The lower end of the foldable tube body passes through the flushing tube connector cap and rubber plug, communicating with the interior of the flushing tube connector. The upper end of the foldable tube body is provided with a foldable head, with a foldable portion disposed between the foldable tube body and the foldable head.

[0044] The inlet bag 3 can be sealed by means of the foldable handle 71 . After the operator breaks the foldable handle 71 , the dialysate in the inlet bag 3 can flow into the third conduit 7 .

[0045] A second one-way switch 72 is provided on the third catheter 7. This switch is used to ensure that the dialysate in the inlet bag 3 flows unidirectionally into the syringe 2. When the operator needs to inject the dialysate in the syringe 2 into the patient's peritoneal cavity through the second catheter 6, the second one-way switch 72 prevents the dialysate in the syringe 2 from flowing back into the inlet bag 3, ensuring that the dialysate in the syringe 2 is injected into the patient's peritoneal cavity and reducing the operator's need to control the opening and closing of the third catheter 7.

[0046] The second one-way switch 72 is a second one-way valve, which can be any one-way valve known in the art. In the embodiment of the present application, the second one-way valve utilizes the principle of a heart valve and includes a second connecting ring and a second sealing sheet, which can be a rubber sheet. The outer side of the second connecting ring is sealed with the third conduit 7. The second sealing sheet is flexibly connected to the second connecting ring, and the size of the second sealing sheet is larger than the inner diameter of the second connecting ring. The second sealing sheet is located on the side of the second connecting ring close to the connecting tube 4, and the second sealing sheet seals the opening of the inner diameter of the connecting ring.

[0047] When the syringe 2 extracts the dialysate, the second sealing piece moves away from the second connecting ring under the pressure of the dialysate, the second connecting ring opens, and the dialysate in the liquid inlet bag 3 can be drawn into the syringe 2 by the syringe 2; when the syringe 2 injects the dialysate, the second sealing piece is tightly attached to the second connecting ring under the pressure of the dialysate, preventing the dialysate in the syringe 2 from flowing back into the liquid inlet bag 3, thereby realizing the one-way conduction of the second one-way valve.

[0048] Reference Figure 1 and Figure 2 The syringe 2 includes a needle tube 21, a piston and a push rod 22. The piston is located in the needle tube 21. The push rod 22 is connected to the piston. Pushing and pulling the push rod 22 can drive the piston to move, thereby driving the needle tube 21 to aspirate or inject the dialysate.

[0049] The needle tube 21 is evenly printed with a plurality of scale lines 211, and numbers are marked on the scale lines 211. With the help of the scale lines 211, the operator can extract different amounts of dialysate from the liquid inlet bag 3 as needed. The operator can conveniently inject the required amount of dialysate into the abdominal cavity of the young child according to the different ages of the young children.

[0050] The maximum scale of the needle tube 21 is greater than 50 milliliters. When the operator flushes the tube vigorously, 50 milliliters of dialysate can be used for each flush.

[0051] A mounting tube 8 is provided on the injection nipple, and the end of the mounting tube 8 away from the syringe 2 is integrally connected to the second catheter 6 and the third catheter 7. With the help of the mounting tube 8, the syringe 2 can be replaced. When the existing syringe 2 is difficult to weigh the required dialysate, the operator can select a syringe 2 of corresponding size and connect the syringe 2 to the mounting tube 8.

[0052] Reference Figure 1 and Figure 2 A plastic ring 31 is integrally connected to the side of the fluid inlet bag 3 away from the third catheter 7. The plastic ring 31 is formed with a hanging hole 311. With the help of the hanging hole 311, the operator can hang the fluid inlet bag 3 on the hook.

[0053] In the embodiment of the present application, a clamp is used to control the opening and closing of the first conduit 5. To ensure the sealing effect of the first conduit 5, the first conduit 5 includes a rubber segment. The rubber segment has good flexibility. When the clamp is used to clamp the rubber segment, it is conducive to ensuring the sealing effect of the first conduit 5. Furthermore, the first conduit 5 can be a rubber tube.

[0054] The implementation principle of the peritoneal dialysis fluid circuit for children with precise volume control and adult pressurized perfusion is as follows: after the operator connects the connecting tube 4 to the patient's external short tube, he first controls the second catheter 5 to be closed, and then opens the first catheter 5 and the patient's external short tube, so that the waste fluid in the patient's abdominal cavity can be discharged into the waste fluid bag 1 through the first catheter 5; after the waste fluid in the patient's abdominal cavity is discharged, the operator clamps and closes the first catheter 5 and the second catheter 6, and simultaneously opens the third catheter 7, so that the operator can draw a fixed amount of dialysate into the syringe 2, and finally closes the third catheter 7 and opens the second catheter 6, so that the operator can inject a fixed amount of dialysate into the patient's abdominal cavity, thereby achieving quantitative injection of dialysis and overall improving the problem that it is difficult for the operator to inject an accurate amount of dialysate into the abdominal cavity of young children.

[0055] Unless otherwise defined, the technical or scientific terms used in this application shall have the usual meanings understood by persons of ordinary skill in the field to which this application belongs. The words "first", "second", "third" and similar terms used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprises" cover the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] The above are all optional embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults, characterized by: It includes a waste liquid bag, a syringe, a liquid inlet bag for holding dialysate, and a connecting tube for connecting to the patient's external short tube. A first catheter is connected between the waste liquid bag and the connecting tube, a second catheter is connected between the nipple of the syringe and the connecting tube, and a third catheter is connected between the nipple of the syringe and the liquid inlet bag.

2. A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 1, characterized in that: A first one-way switch is provided in the second conduit and is used to allow the dialysate in the syringe to flow into the second conduit in a one-way manner.

3. A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 2, characterized in that: The third conduit is provided with a second one-way switch for allowing the dialysate in the third conduit to flow into the syringe in a one-way manner.

4. A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 3, characterized in that: The first one-way switch is a first one-way flap.

5. A peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 4, characterized in that: The first one-way valve is located in the middle of the second conduit.

6. The peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 3, characterized in that: The second one-way switch is a second one-way flap.

7. The peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 1, characterized in that: The liquid inlet bag is provided with a hanging hole.

8. The peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 1, characterized in that: The first conduit has a rubber section.

9. The peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 1, characterized in that: The syringe comprises a needle tube, and a plurality of scale lines are arranged on the needle tube.

10. The peritoneal dialysis fluid circuit with precise volume control for children and pressurized perfusion for adults according to claim 1, characterized in that: A foldable handle is provided in the third conduit.

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