Double-cavity kettle

Abstract

The utility model provides a double-cavity kettle, which belongs to the technical field of medical instruments and comprises an outer kettle and an inner kettle, the outer kettle surrounds the outer side of the inner kettle, and the outer kettle and the inner kettle are not connected with each other; a one-way valve is arranged between the outer kettle and the inner kettle, an inlet of the one-way valve is communicated with the inner kettle, and an outlet of the one-way valve is communicated with the outer kettle. The outer pot and the inner pot are matched for use, and the one-way valve is arranged between the inner pot and the outer pot, so that the plasma of a patient is stored and purified, the plasma conveyed back to the body of the patient is purified for at least one cycle, and a good treatment effect is achieved; the outer kettle and the inner kettle are not connected, the two kettles do not need to be bonded through a hot pressing method, the production process is simple, the yield is increased, the production efficiency is improved, the production cost is reduced, and meanwhile the situation that purified plasma and unpurified plasma are mixed together or leak due to breakage of the bonding position of the two kettles is avoided; and the treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a double-chamber pot. Background Technology

[0002] Liver failure is a severe liver damage caused by multiple factors, resulting in a group of clinical syndromes mainly characterized by coagulation disorders, jaundice, hepatic encephalopathy, and ascites. Currently, clinical treatment for liver disease primarily includes comprehensive medical treatment, artificial liver support therapy, and liver transplantation. Artificial liver support therapy utilizes an artificial liver support system. This system temporarily replaces liver function through an external physical, chemical, or biological device, clearing toxins from the body, compensating for liver physiological function, and thus allowing hepatocytes to regenerate until the patient's own liver recovers or until an opportunity for liver transplantation arises.

[0003] When using an artificial liver support system to treat liver disease, a plasma storage bag is needed to store plasma. Utility model patent application number 2013101688122 discloses a plasma storage bag specifically for plasma exchange adsorption filtration therapy. Through the design of the inner and outer cavities and the construction of a difference in liquid flow rate during operation, it enables the plasma of patients with liver failure to undergo multiple adsorption filtration purification cycles outside the body, forming a highly efficient circulation pathway. Simultaneously, purified plasma and unpurified plasma are isolated by a one-way valve. However, the outer and inner bags of this plasma storage bag are made of medical-grade PVC, and the tops of the two bags are glued together. The gluing of medical-grade PVC generally uses a heat-pressing method, which has high process requirements in actual operation, is prone to generating waste products, and leads to low production efficiency and high production costs. Furthermore, if the glued joint between the tops of the two bags is damaged, purified plasma may mix with unpurified plasma or leak, affecting the treatment effect. Furthermore, the one-way valve is composed of a double-layer diaphragm, and its production and connection to the two bags also require a thermoforming method, which similarly leads to low production efficiency and high production costs. Therefore, a new double-chamber pot needs to be designed. Utility Model Content

[0004] The purpose of this application is to provide a double-chamber pot, which aims to solve the technical problems of low production efficiency, high production cost, and impact on treatment efficacy of existing plasma storage bags.

[0005] This application provides a double-chamber kettle, including an outer chamber and an inner chamber. The outer chamber surrounds the outside of the inner chamber and is not connected to the inner chamber. A one-way valve is provided between the outer chamber and the inner chamber. The inlet of the one-way valve is connected to the inner chamber, and the outlet of the one-way valve is connected to the outer chamber.

[0006] In one embodiment, the outer pot is U-shaped, including a bottom shoulder and two side arms located on the left and right sides of the bottom shoulder, forming a receiving cavity between the bottom shoulder and the two side arms, and the inner pot is located in the receiving cavity.

[0007] In one embodiment, the one-way valve is disposed between the bottom end of the inner pot and the top end of the bottom shoulder.

[0008] In one embodiment, the top of the outer pot is provided with a first inlet, and the bottom of the outer pot is provided with a first outlet. The first inlet and the first outlet are respectively connected to the outer pot through pipes.

[0009] In one embodiment, the bottom of the outer vessel is provided with a waste outlet, which is connected to the outer vessel via a pipe.

[0010] In one embodiment, the inner pot has a second inlet at the top and a second outlet at the bottom, and the second inlet and the second outlet are respectively connected to the inner pot through pipes.

[0011] In one embodiment, a connecting pipe is provided between the outer vessel and the inner vessel. The connecting pipe is not connected to the atmosphere to prevent outside air from entering and thus protect the blood.

[0012] In one embodiment, the connecting pipe is disposed at the top of the outer pot and the inner pot, and the inner pot is connected to the two side arms of the outer pot through the connecting pipe.

[0013] In one embodiment, scale lines are provided on the outer walls of both the outer pot and the inner pot, and the scale lines include a lower limit scale line and an upper limit scale line.

[0014] In one embodiment, a fixing plate is also included, wherein the outer pot and the inner pot both pass through the fixing plate and extend to the front and rear sides of the fixing plate, the fixing plate is provided with a through hole, and the one-way valve is located in the through hole; a fixing frame is provided on the four sides of the fixing plate, and a fixing hole is provided on the fixing frame.

[0015] This invention provides a double-chamber ampoule, which, compared with existing technologies, offers the following advantages: By using an outer chamber and an inner chamber in conjunction, and incorporating a one-way valve between them, it achieves the storage and purification of patient plasma. This ensures that the plasma returned to the patient undergoes at least one cycle of purification, resulting in excellent therapeutic effects. Furthermore, by ensuring the outer and inner chambers are not connected, there is no need for heat-pressing to bond them together, simplifying the production process, increasing yield, improving production efficiency, and reducing costs. It also prevents damage at the bonding point between the two chambers, avoiding mixing of purified and unpurified plasma or leakage, thus enhancing therapeutic efficacy. By using a one-way valve instead of a one-way valve, finished products can be purchased directly from the market, simplifying the production process, improving efficiency, and reducing costs. This invention features a simple structure, a simple production process, high production efficiency, low production cost, easy operation, good purification effect on patient plasma circulation, and high practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a double-chamber kettle provided in one embodiment of this application;

[0018] Figure 2 for Figure 1 A partial structural diagram of the double-chamber kettle is shown (without the fixing plate and fixing frame);

[0019] Figure 3 for Figure 2 The diagram shows the front view of the double-chambered kettle.

[0020] Explanation of symbols in the diagram:

[0021] 1. Outer vessel; 101. Bottom shoulder; 102. Side arm; 2. Inner vessel; 3. One-way valve; 4. Connecting pipe; 5. First inlet; 6. First outlet; 7. Second inlet; 8. Second outlet; 9. Pipeline; 10. Waste outlet; 11. Scale line; 1101. Lower limit scale line; 1102. Upper limit scale line; 12. Fixing plate; 1201. Through hole; 13. Fixing frame; 1301. Fixing hole. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed" or "set" to another component, it can be directly or indirectly attached to that other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to that other component.

[0024] It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and should not be construed as indicating or implying that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Please see Figure 1 This is a schematic diagram of a double-chamber kettle according to an embodiment of this application. For ease of explanation, only the parts relevant to this embodiment are shown, and the details are as follows:

[0026] In one embodiment, please refer to Figure 2 A double-chamber reservoir includes an outer chamber 1 and an inner chamber 2. The outer chamber 1 surrounds the outer side of the inner chamber 2, and the outer chamber 1 and the inner chamber 2 are not connected to each other. A one-way valve 3 is provided between the outer chamber 1 and the inner chamber 2. The inlet of the one-way valve 3 is connected to the inner chamber 2, and the outlet of the one-way valve 3 is connected to the outer chamber 1. This application is used to store the patient's plasma during plasma exchange adsorption filtration therapy. In use, the patient's venous blood is introduced into the outer chamber 1 for storage. Then, the venous blood is pumped from the outer chamber 1 into an external plasma purification device for purification treatment to obtain purified plasma. The purified plasma is pumped into the inner chamber 2 for storage. A portion of the purified plasma is returned to the patient's body, while the other portion of the purified plasma, under the influence of gravity, flows into the outer chamber 1 through the one-way valve 3 for further purification treatment, thus realizing the cyclic purification treatment of the patient's plasma.

[0027] By using an outer vessel 1 and an inner vessel 2 in conjunction, and installing a one-way valve 3 between the inner vessel 2 and the outer vessel 1, the storage and purification of patient plasma are achieved. This ensures that the plasma returned to the patient undergoes at least one cycle of purification, resulting in good therapeutic effects. Furthermore, by ensuring that the outer vessel 1 and the inner vessel 2 are not connected, there is no need to use a hot-pressing method to bond the two vessels, simplifying the production process, increasing the yield, improving production efficiency, and reducing production costs. This also prevents damage at the bonding point between the two vessels, which could lead to the purified plasma mixing with unpurified plasma or leakage, thus improving therapeutic efficacy. Finally, by using a one-way valve 3 instead of a one-way valve, finished products can be purchased directly from the market, simplifying the production process, improving production efficiency, and reducing production costs.

[0028] For details, please refer to Figures 2-3 The outer pot 1 is U-shaped, including a bottom shoulder 101 and two side arms 102 located on the left and right sides of the bottom shoulder 101. A receiving cavity is formed between the bottom shoulder 101 and the two side arms 102, and the inner pot 2 is located in the receiving cavity. By placing the inner pot 2 in the receiving cavity, the outer pot 1 provides protection for the inner pot 2, preventing the inner pot 2 from being subjected to external physical damage or contamination, thereby improving the safety during use.

[0029] Please see Figures 2-3 The one-way valve 3 is located between the bottom of the inner vessel 2 and the top of the bottom shoulder 101. This design allows the purified blood plasma in the inner vessel 2 to automatically flow into the outer vessel 1 through the one-way valve 3 under the influence of gravity, eliminating the need for a pump to suction, which is simple and convenient.

[0030] In one embodiment, please refer to Figures 2-3 The outer container 1 has a first inlet 5 at its top and a first outlet 6 at its bottom. The first inlet 5 and the first outlet 6 are connected to the outer container 1 via pipes 9. The first inlet 5 is connected to an external plasma separator, used to introduce waste plasma generated after separation by the plasma separator into the outer container 1 for storage. The first outlet 6 is connected to an external plasma purification device, including a blood filter, an adsorber, etc., used to introduce the waste plasma stored in the outer container 1 into the external plasma purification device for purification treatment.

[0031] In one embodiment, please refer to Figures 2-3 The outer container 1 is also provided with a waste outlet 10 at its bottom, which is connected to the outer container 1 via a pipe 9. The waste outlet 10 is used to discharge the waste plasma in the outer container 1 after the circulation purification process is completed. In this embodiment, the first outlet 6 and the waste outlet 10 share the same pipe 9, making the structure more compact, saving space and reducing costs.

[0032] In one embodiment, please refer to Figures 2-3The inner vessel 2 has a second inlet 7 at its top and a second outlet 8 at its bottom. The second inlet 7 and the second outlet 8 are connected to the inner vessel 2 via pipes 9. The second inlet 7 is connected to an external plasma purification device to introduce purified plasma into the inner vessel 2 for storage. The second outlet 8 is connected to the patient's vein to return the purified plasma stored in the inner vessel 2 to the patient's body.

[0033] In one embodiment, please refer to Figures 2-3 A connecting pipe 4 is also provided between the outer pot 1 and the inner pot 2. The connecting pipe 4 is used to balance the air pressure of the outer pot 1 and the inner pot 2, improving the safety during use. The connecting pipe 4 is not connected to the atmosphere, preventing outside air from entering to protect the blood.

[0034] In one embodiment, please refer to Figures 2-3 The connecting tube 4 is located at the top of the outer pot 1 and the inner pot 2. The inner pot 2 is connected to the two side arms 102 of the outer pot 1 through the connecting tube 4. By placing the connecting tube 4 at the top of the outer pot 1 and the inner pot 2, the blood plasma in the outer pot 1 and the inner pot 2 can be prevented from mixing together through the connecting tube 4, thereby improving the therapeutic effect.

[0035] In one embodiment, please refer to Figures 2-3 Both the outer chamber 1 and the inner chamber 2 have graduation lines 11 on their outer walls. The graduation lines 11 include a lower limit graduation line 1101 and an upper limit graduation line 1102. The graduation lines 11 allow for a visual understanding of the volume and relative position of the plasma in the outer chamber 1 and the inner chamber 2. In addition, the graduation lines 11 also serve as a warning. When medical staff observe that the plasma in the outer chamber 1 or the inner chamber 2 is below the lower limit graduation line 1101 or above the upper limit graduation line 1102, treatment must be stopped immediately to protect the patient.

[0036] In one embodiment, please refer to Figure 1 The system also includes a fixing plate 12. Both the outer chamber 1 and the inner chamber 2 pass through the fixing plate 12 and extend to the front and rear sides of the fixing plate 12. The fixing plate 12 has a through hole 1201, and the one-way valve 3 is located in the through hole 1201. The fixing plate 12 is used to fix the outer chamber 1, the inner chamber 2, the one-way valve 3, the connecting pipe 4, the first inlet 5, the first outlet 6, the second inlet 7, the second outlet 8, the pipeline 9, and the waste outlet 10, so that the dual-chamber chamber can be installed on the artificial liver support system more easily, the operation is simple and convenient, and the pipeline 9 and the connecting pipe 4 can be sorted out, avoiding the mess caused by the tangling of the pipeline 9 and the connecting pipe 4.

[0037] In one embodiment, please refer to Figure 1The fixing plate 12 has fixing frames 13 on its four sides, which surround the outside of the fixing plate 12. The fixing frames 13 have fixing holes 1301. The fixing frames 13 serve to install and position the double-chamber pot onto the artificial liver support system through the fixing holes 1301.

[0038] The following combination Figures 1-3 The working process of a double-chamber kettle according to this application is described as follows:

[0039] In use, venous blood drawn from the patient is pumped into an external plasma separator. After separation by the plasma separator, the separated waste plasma flows into the outer container 1 through the first inlet 5 for storage under the action of the pump. Then, under the action of the pump, it flows into the external plasma purification device through the first outlet 6. The external plasma purification device purifies the waste plasma to obtain purified plasma. The purified plasma flows into the inner container 2 through the second inlet 7 for storage. Part of the purified plasma is pumped back into the patient through the second outlet 8, while the other part flows into the outer container 1 through the one-way valve 3 under the influence of gravity for further purification. This cycle is repeated to achieve the cyclic purification of the patient's plasma.

[0040] In summary, this invention provides a dual-chamber pot that uses an outer chamber and an inner chamber in conjunction, with a one-way valve between them. This allows for the storage and purification of patient plasma, ensuring that the plasma returned to the patient undergoes at least one cycle of purification, resulting in good therapeutic effects. By decoupling the outer and inner chambers, there is no need for heat-pressing to bond them, simplifying the manufacturing process, increasing yield, improving production efficiency, and reducing costs. It also prevents damage at the bonding point, avoiding mixing of purified and unpurified plasma or leakage, further enhancing therapeutic efficacy. Using a one-way valve instead of a one-way valve allows for direct purchase of commercially available products, simplifying the manufacturing process, improving efficiency, and reducing costs. This invention features a simple structure, a simple manufacturing process, high production efficiency, low production cost, and easy operation. It provides excellent purification of patient plasma and is highly practical, making it widely applicable in the field of medical device technology.

[0041] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A double-cavity pot, comprising an outer pot (1) and an inner pot (2), said outer pot (1) surrounding the outer side of said inner pot (2), characterized in that, The outer pot (1) and the inner pot (2) are not connected to each other; a one-way valve (3) is provided between the outer pot (1) and the inner pot (2), the inlet of the one-way valve (3) is connected to the inner pot (2), and the outlet of the one-way valve (3) is connected to the outer pot (1).

2. The double-chamber kettle as described in claim 1, characterized in that, The outer pot (1) is U-shaped and includes a bottom shoulder (101) and two side arms (102) located on the left and right sides of the bottom shoulder (101). A receiving cavity is formed between the bottom shoulder (101) and the two side arms (102), and the inner pot (2) is located in the receiving cavity.

3. The double-chamber kettle as described in claim 2, characterized in that, The one-way valve (3) is located between the bottom of the inner pot (2) and the top of the bottom shoulder (101).

4. The double-chamber kettle as described in claim 1, characterized in that, The outer pot (1) has a first inlet (5) at its top and a first outlet (6) at its bottom. The first inlet (5) and the first outlet (6) are connected to the outer pot (1) through pipes (9).

5. The double-chamber kettle as described in claim 1, characterized in that, The bottom end of the outer pot (1) is also provided with a waste outlet (10), which is connected to the outer pot (1) through a pipe (9).

6. The double-chamber kettle as described in claim 1, characterized in that, The inner pot (2) has a second inlet (7) at the top and a second outlet (8) at the bottom. The second inlet (7) and the second outlet (8) are connected to the inner pot (2) through pipes (9).

7. The double-chamber kettle as described in claim 2, characterized in that, A connecting pipe (4) is provided between the outer pot (1) and the inner pot (2). The connecting pipe (4) is not connected to the atmosphere, preventing outside air from entering and protecting the blood.

8. The double-chamber kettle as described in claim 7, characterized in that, The connecting pipe (4) is located at the top of the outer pot (1) and the inner pot (2), and the inner pot (2) is connected to the two side arms (102) of the outer pot (1) through the connecting pipe (4).

9. The double-chamber kettle as described in claim 1, characterized in that, Both the outer pot (1) and the inner pot (2) are provided with scale lines (11) on their outer walls. The scale lines (11) include a lower limit scale line (1101) and an upper limit scale line (1102).

10. The double-chamber kettle as described in claim 1, characterized in that, It also includes a fixing plate (12), the outer pot (1) and the inner pot (2) both pass through the fixing plate (12) and extend to the front and rear sides of the fixing plate (12), the fixing plate (12) is provided with a through hole (1201), and the one-way valve (3) is located in the through hole (1201); the four sides of the fixing plate (12) are provided with fixing frames (13), and the fixing frames (13) are provided with fixing holes (1301).

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