Hemodialysis device and vein pot device thereof

Abstract

The utility model discloses a hemodialysis device and a vein pot device thereof, and relates to the technical field of hemodialysis, the vein pot device comprises a vein pot, the upper end of the vein pot is provided with at least three upper ports, and the lower end of the vein pot is provided with a lower port; the filter screen is arranged at the lower port; the bottom of the movable filter screen is matched with the filter screen, and the side wall of the movable filter screen is matched with the side wall of the lower part of the vein pot; the driving part penetrates through the upper end opening of the vein pot and is connected with the middle of the movable filter screen so that the movable filter screen can ascend and descend, and a gap is reserved between the movable filter screen and the side wall of the vein pot when the movable filter screen is lifted. The device not only can solve the problem that blood cannot be completely infused into the body due to the fact that the vein pot in an extracorporeal circulation pipeline is blocked, but also can avoid the problem that the cost is greatly increased due to the design of double vein pots.

Description

Technical Field

[0001] The utility model relates to the technical field of hemodialysis, and more specifically, to a venous pot device. In addition, it also relates to a hemodialysis device comprising the venous pot device. Background Art

[0002] In the prior art, hemodialysis relies on the patency of the extracorporeal circulation circuit to proceed smoothly. However, during the dialysis process, blood coagulation often occurs in the pipeline and the dialyzer due to various reasons. Among them, the filter screen 5 of the venous pot of the venous line is often blocked by blood clots, resulting in blockage of the extracorporeal circulation circuit. In the traditional dialysis venous line, when impurities such as blood clots appear in the traditional venous pot 4, they will be intercepted by the filter screen 5 in the traditional venous pot 4 and accumulate around the filter screen 5, resulting in blockage of the filter screen 5, and the blood in the venous pot 4 cannot be returned to the body. Among them, the structure of the traditional venous pot 4 is as follows: Figure 1 As shown, the structure diagram of the filter 5 blocking is as follows Figure 2 That is, the blood in the extracorporeal circulation cannot be completely returned to the body, and the extracorporeal circulation line and dialyzer are usually discarded directly, causing the patient to lose about 200-250mL of blood, causing anemia in the patient and affecting the patient's quality of life, especially for patients with high coagulation risk or without heparin dialysis.

[0003] In recent years, some technologies have adopted a double venous pot design to reduce the problem of blood not being able to be completely returned to the patient's body. This design can only complete the return of part of the blood in the pipeline when the venous pot 4 is blocked during hemodialysis. The blood in the dialysis pipeline from the venous pot 4 to the venous puncture needle cannot be completely returned to the body, resulting in blood waste. Adding a venous pot 4 and corresponding pipelines will greatly increase production costs.

[0004] In summary, how to solve the problem of blood not being completely returned to the body due to blockage of the venous pot in the extracorporeal circulation circuit, while avoiding the substantial cost increase caused by the double venous pot design, is an urgent problem to be solved by technical personnel in this field. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a venous pot device, which can not only solve the problem of blood being unable to be completely returned to the body due to blockage of the venous pot in the extracorporeal circulation pipeline, but also avoid the problem of substantially increased costs caused by the double venous pot design.

[0006] Another object of the utility model is to provide a hemodialysis device comprising the above-mentioned venous pot device.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] An intravenous pot device, comprising:

[0009] A venous pot having at least three upper ports at its upper end and a lower port at its lower end;

[0010] A filter screen disposed at the lower port;

[0011] a movable filter screen, the bottom of which cooperates with the filter screen, and the side wall of the movable filter screen cooperates with the side wall of the lower part of the venous pot;

[0012] The driving part passes through the upper port of the venous pot and is connected with the middle part of the movable filter screen, so that the movable filter screen can be raised and lowered, and a gap is left between the movable filter screen and the side wall of the venous pot when the movable filter screen is raised.

[0013] In one embodiment, the driving unit includes a retractable line, a second side branch tube, a retractable head and a first clamp, the second side branch tube is connected to the upper port of the intravenous pot, and the bottom of the retractable head is arranged at the upper end of the second side branch tube;

[0014] The bottom of the retractable wire passes through the second side branch pipe and is connected to the middle of the movable filter, the top of the retractable wire passes through the retractable head and is connected to the top of the retractable head, and the first clamp is used to clamp the retractable head and the retractable wire.

[0015] In one embodiment, the retractable head is a foldable and retractable conical structure, and the top of the retractable line is connected to the top of the conical structure.

[0016] In one embodiment, the tapered structure is made of plastic.

[0017] In one embodiment, when the retractable head is in the maximum compression state, the movable filter fits the filter; when the retractable head is in the maximum extension state, the height of the movable filter does not exceed 3 / 4 of the intravenous pot.

[0018] In one embodiment, the length of the pay-out and take-up wire remains unchanged during the upward movement of the movable filter screen.

[0019] In one embodiment, the retractable head and the second side branch tube are an integrally formed part.

[0020] In one embodiment, the upper diameter of the venous pot is larger than the lower diameter.

[0021] In one embodiment, the vertical cross-section of the movable filter is W-shaped, the middle portion of the W-shape is lower than both ends of the W-shape, and the middle portion of the W-shape is in a straight line shape.

[0022] A hemodialysis device comprises any one of the venous pot devices described above.

[0023] When using the venous pot device provided by the utility model, one end of the venous connection pipeline can be connected to an upper port of the venous pot, and the other end of the venous connection pipeline can be connected to the dialyzer outlet. In addition, the first side branch tube can be connected to the other upper port of the venous pot, and the first side branch tube is used to provide a channel for detecting venous pressure. Moreover, the driving part can be connected to the middle part of the movable filter through another upper port of the venous pot, and then the movable filter can be driven to move up and down through the driving part. In the initial state, the bottom of the movable filter cooperates with the filter, and the side wall of the movable filter cooperates with the side wall of the lower part of the venous pot.

[0024] Blood can flow into the venous pot through the venous connection pipeline, pass through the double filtration of the movable filter and the filter, and finally flow out from the lower port of the venous pot. During use, if the movable filter is blocked, the movable filter can be driven up by the driving unit. When the movable filter is raised, there is a gap between the movable filter and the side wall of the venous pot, so that the blood can flow out from the side wall of the movable filter and pass through the unblocked filter, thus successfully completing the blood reinfusion operation in the venous pot and the pipeline.

[0025] When using this device, when the intravenous pot is blocked, the medical staff only needs to drive the movable filter and the blocked impurities to rise through the driving part, so that other blood can continue to flow out from the side wall of the movable filter, and then flow out from the lower port of the intravenous pot after passing through the unblocked filter. This operation is simple and convenient, and has little impact on the patient. Moreover, compared with the double intravenous pot design, this device can realize the return of all blood in the intravenous pot and the pipeline without connecting an additional intravenous pot device, so as to effectively save production costs.

[0026] In summary, the venous pot device provided by the utility model can not only solve the problem of blood being unable to be completely returned to the body due to blockage of the venous pot in the extracorporeal circulation pipeline, but also avoid the problem of a substantial increase in costs caused by the double venous pot design.

[0027] In addition, the utility model also provides a hemodialysis device including the above-mentioned venous pot device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the structure of a traditional intravenous kettle in the prior art;

[0030] Figure 2 It is a structural schematic diagram of filter screen blockage in the prior art;

[0031] Figure 3 It is a structural schematic diagram of the retractable head of the intravenous pot device provided by the utility model when it is in the maximum retracted state;

[0032] Figure 4 It is a schematic diagram of the structure when the retractable head of the intravenous pot device is in the maximum stretched state;

[0033] Figure 5 is a schematic diagram of the structure when the retractable head is fixed by the first clip;

[0034] Figure 6 It is a schematic diagram of the structure when the intravenous pot device is blocked;

[0035] Figure 7 for Figure 6 A local enlarged view of point A;

[0036] Figure 8 It is a schematic diagram of the structure of the retractable head when it is stretched;

[0037] Fig. 9 for Figure 8 A partial enlarged view of point B;

[0038] Fig.10 is a schematic diagram of the structure when the retractable head is fixed;

[0039] Fig.11 for Fig.10 A partial enlarged view of point C.

[0040] Figure 1-Figure 11 middle:

[0041] 1 is the intravenous connecting pipeline, 2 is the pressure protection cover, 3 is the second clamp, 4 is the intravenous pot, 5 is the filter, 6 is the retractable head, 7 is the first side branch tube, 8 is the first clamp, 9 is the retractable line, 10 is the movable filter, and 11 is the second side branch tube. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] The core of the utility model is to provide a venous pot device, which can solve the problem that the blood cannot be completely returned to the body due to the blockage of the venous pot in the extracorporeal circulation pipeline, and avoid the problem of a substantial increase in costs caused by the double venous pot design. Another core of the utility model is to provide a hemodialysis device including the venous pot device.

[0044] Please refer to Figures 3 to 11 .

[0045] This specific embodiment provides a venous pot device, comprising:

[0046] A venous pot 4, having at least three upper ports at its upper end and a lower port at its lower end;

[0047] A filter screen 5, which is arranged at the lower port;

[0048] A movable filter 10, the bottom of which is matched with the filter 5, and the side wall of the movable filter 10 is matched with the side wall of the lower part of the venous pot 4;

[0049] The driving part passes through the upper port of the venous pot 4 and is connected to the middle part of the movable filter screen 10 so that the movable filter screen 10 can be raised and lowered. When the movable filter screen 10 is raised, a gap is left between the movable filter screen 10 and the side wall of the venous pot 4.

[0050] It should be noted that the filter 5 is used to filter out impurities such as blood clots to prevent them from being re-infused into the human body. The movable filter 10 is also used to filter out impurities such as blood clots in the intravenous pot 4, and the bottom of the movable filter 10 is matched with the shape and size of the filter 5, so that the blood passes through the double filtration of the movable filter 10 and the filter 5, ensuring that impurities such as blood clots are blocked.

[0051] It should also be noted that the device needs to be connected to the venous connection line 1 and the first side branch tube 7 during actual use, wherein one end of the venous connection line 1 is connected to an upper port of the venous pot 4, and the other end is used to connect to the dialyzer outlet, and the first side branch tube 7 is connected to the other upper port of the venous pot 4 to provide a channel for detecting venous pressure. In addition, a pressure protection cover 2 and a second clamp 3 are provided on the first side branch tube 7. The pressure protection cover 2 is used to connect to the venous pressure monitoring sensor of the dialyzer to prevent blood from contaminating the venous pressure monitoring sensor of the dialyzer during the dialysis process, and the second clamp 3 is used to control the opening and closing of the first side branch tube 7. That is, the second clamp 3 can be regulated to open or close according to the detection data of the venous pressure monitoring sensor of the dialyzer, or the second clamp 3 can be regulated to open or close according to the needs of the dialysis treatment process.

[0052] Moreover, the side wall of the movable filter 10 cooperates with the side wall of the lower part of the venous pot 4 to enable the movable filter 10 to be smoothly raised and lowered relative to the venous pot 4, and after the movable filter 10 is raised, a gap is left between the side wall of the movable filter 10 and the venous pot 4, so that blood can flow out from the side wall of the movable filter 10, pass through the unblocked filter 5, and then flow out from the lower port of the venous pot 4.

[0053] In actual use, the shape, structure, size, material, position, etc. of the venous pot 4, venous connecting line 1, first side branch tube 7, filter 5, movable filter 10 and driving part can be determined according to actual conditions and actual needs.

[0054] When using the venous pot device provided by the utility model, one end of the venous connection pipeline 1 can be connected to an upper port of the venous pot 4, and the other end of the venous connection pipeline 1 can be connected to the dialyzer outlet. In addition, the first side branch tube 7 can be connected to the other upper port of the venous pot 4, and the first side branch tube 7 is used to provide a channel for detecting venous pressure. Moreover, the driving part can be connected to the middle part of the movable filter screen 10 through another upper port of the venous pot 4, and then the movable filter screen 10 can be driven to move up and down by the driving part. In the initial state, the bottom of the movable filter screen 10 cooperates with the filter screen 5, and the side wall of the movable filter screen 10 cooperates with the side wall of the lower part of the venous pot 4.

[0055] Blood can flow into the venous pot 4 through the venous connection pipeline 1, pass through the double filtration of the movable filter 10 and the filter 5, and finally flow out from the lower port of the venous pot 4. During use, if the movable filter 10 is blocked, the movable filter 10 can be driven up by the driving part. When the movable filter 10 is raised, there is a gap between the movable filter 10 and the side wall of the venous pot 4, so that the blood flows out from the side wall of the movable filter 10, passes through the unblocked filter 5, and successfully completes the blood reinfusion operation in the venous pot 4 and the pipeline.

[0056] When using the device, when the venous pot 4 is blocked, the medical staff only needs to drive the movable filter 10 and the blocked impurities to rise through the driving part, so that other blood can continue to flow out from the side wall of the movable filter 10, pass through the unblocked filter 5, and then flow out from the lower port of the venous pot 4. The operation is simple and convenient, and has little impact on the patient. Moreover, compared with the double venous pot design, the device can realize the reinfusion of all blood in the venous pot 4 and the pipeline without connecting an additional venous pot device, so as to effectively save production costs.

[0057] In summary, the venous pot device provided by the utility model can not only solve the problem of blood being unable to be completely returned to the body due to blockage of the venous pot in the extracorporeal circulation pipeline, but also avoid the problem of a substantial increase in costs caused by the double venous pot design.

[0058] In one embodiment, the driving part includes a retractable wire 9, a second side branch tube 11, a retractable head 6 and a first clamp 8. The second side branch tube 11 is arranged at the upper port of the intravenous pot 4, and the bottom of the retractable head 6 is arranged at the upper end of the second side branch tube 11; the bottom of the retractable wire 9 passes through the second side branch tube 11 and is connected to the middle part of the movable filter 10, the top of the retractable wire 9 passes through the retractable head 6 and is connected to the top of the retractable head 6, and the first clamp 8 is used to clamp the retractable head 6 and the retractable wire 9.

[0059] It should be noted that the second side branch tube 11 is connected to the upper port of the intravenous pot 4, the upper end of the second side branch tube 11 is the retractable head 6, the lower end of the second side branch tube 11 is bonded to the intravenous pot 4, and the retractable wire 9 passes through the second side branch tube 11 and is bonded to the retractable head 6. When the first clamp 8 is opened, the retractable wire 9 can be stretched and contracted synchronously with the retractable head 6, thereby realizing the position change of the movable filter 10. When the first clamp 8 is closed, it can prevent the retractable head 6 from returning to the contracted state when there is an overweight blood clot at the movable filter 10.

[0060] It should also be noted that when the hemodialysis treatment is carried out smoothly, the retractable head 6 is in the maximum contraction state. Figure 3 As shown; when blood coagulation occurs during hemodialysis treatment and blood needs to be returned, the operator stretches the retractable head 6 and determines the stretching length of the retractable head 6 according to the actual situation. When the stretching is completed, the retractable head 6 and the retractable wire 9 are clamped by the first clamp 8 to fix the retractable length of the retractable head 6 to prevent the retractable wire 9 from continuing to be pulled, as shown in FIG. Figure 5 When the retractable head 6 is in the maximum stretched state, as shown Figure 4 shown.

[0061] In one embodiment, the retractable head 6 is a foldable and retractable conical structure, and the top of the retractable wire 9 is connected to the top of the conical structure, so that the retractable head 6 can be stretched or retracted after being subjected to an external force. Figure 7 As shown, the structure of the retractable head 6 when stretched is as follows Fig. 9 shown.

[0062] In one embodiment, the conical structure is made of plastic material to facilitate the telescopic change of the telescopic head 6 .

[0063] In one embodiment, when the retractable head 6 is in the maximum contraction state, the movable filter 10 fits the filter 5; when the retractable head 6 is in the maximum extension state, the height of the movable filter 10 does not exceed 3 / 4 of the venous pot 4. The 3 / 4 of the venous pot 4 is calculated based on the bottom of the venous pot 4.

[0064] In one embodiment, the length of the pay-out and take-up wire 9 remains unchanged during the upward movement of the movable filter screen 10 .

[0065] It should be noted that the retractable wire 9 can be made of a material with good biocompatibility such as medical non-woven yarn. The retractable wire 9 has no elastic deformation, and the length of the retractable wire 9 remains unchanged during the upward and downward movement of the movable filter screen 10.

[0066] In one embodiment, the retractable head 6 and the second side branch tube 11 are integrally formed to simplify the assembly process of the device and ensure that the connection relationship between the retractable head 6 and the second side branch tube 11 is reliable and stable.

[0067] In one embodiment, the upper diameter of the venous pot 4 is larger than the lower diameter. That is, the venous pot 4 can be set to a structure that is narrow at the bottom and wide at the top, so that after the movable filter screen 10 rises, there is a certain gap between it and the side wall of the venous pot 4, so that the blood flowing into the movable filter screen 10 can flow into the venous pot 4 from the side wall holes, and the venous pot 4 can better achieve blood buffering.

[0068] In one embodiment, the vertical cross section of the movable filter screen 10 is W-shaped, the middle of the W-shape is lower than the two ends of the W-shape, and the middle of the W-shape is a straight line shape, and the structure is as follows: Figure 4 , 5 As shown, such arrangement of the movable filter screen 10 can ensure that the movable filter screen 10 is closely distributed with the filter screen 5 and the inner wall of the intravenous pot 4 .

[0069] It should be noted that when the device is blocked, the retractable head 6 is stretched to raise the movable filter screen 10 (such as Figure 8 As shown), the first clamp 8 is clamped to fix the position of the movable filter 10 (as shown Fig.10 As shown), the blood flows out from the side wall of the movable filter 10, passes through the unblocked filter 5, and successfully completes the return of blood in the venous pot 4 and the pipeline.

[0070] It should also be noted that the movable filter 10 can be set as an integrated structure to facilitate the processing and manufacturing of the structure, and the filter hole size of the movable filter 10 can be set to be smaller than or equal to the filter hole size of the filter 5, so that the movable filter 10 can initially isolate impurities and avoid the filter hole size of the movable filter 10 being too large, resulting in impurities falling through the filter holes of the movable filter 10 to the filter 5 when the movable filter 10 rises, thereby clogging the filter 5. In actual use, the shape, structure, size, material, and filter hole size of the movable filter 10 and the filter 5 can be determined according to actual conditions and actual needs.

[0071] This device solves the problem that the traditional venous pot cannot completely return blood in the coagulation state by adding components such as the retractable line 9, the movable filter 10 and the first clamp 8 on the basis of the original venous pot structure. It can achieve complete return of blood in the venous pot 4 and the pipeline without blood waste, and can save production costs compared with the double venous pot design.

[0072] In addition to the above-mentioned venous pot device, the present invention also provides a hemodialysis device including the venous pot device disclosed in the above-mentioned embodiment. For the structures of other parts of the hemodialysis device, please refer to the prior art and will not be described in detail herein.

[0073] It should be noted that, in the first side branch tube 7 and the second side branch tube 11, the first clamp 8 and the second clamp 3 mentioned in the present invention, the first and the second are only used to distinguish the different positions, and there is no order of precedence.

[0074] In addition, it should be noted that the orientation or position relationship indicated by "upper" and "lower" etc. in the present invention is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of simplifying the description and facilitating understanding, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0075] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referenced to each other. Any combination of all embodiments provided by the utility model is within the protection scope of this utility model and will not be described in detail here.

[0076] The above is a detailed introduction to the hemodialysis device and venous pot device provided by the utility model. This article uses specific examples to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A venous pot device, characterized in that: include: A venous pot (4) having at least three upper ports at its upper end and a lower port at its lower end; A filter (5) disposed at the lower port; A movable filter (10), the bottom of which matches the filter (5), and the side wall of the movable filter (10) matches the side wall of the lower part of the venous pot (4); A driving part passes through the upper port of the venous pot (4) and is connected to the middle part of the movable filter (10) so as to enable the movable filter (10) to move up and down, and when the movable filter (10) is raised, a gap is left between the movable filter (10) and the side wall of the venous pot (4).

2. The intravenous pot device according to claim 1, characterized in that: The driving part comprises a retractable wire (9), a second side branch tube (11), a retractable head (6) and a first clamp (8); the second side branch tube (11) is connected to the upper port of the venous pot (4); the bottom of the retractable head (6) is arranged at the upper end of the second side branch tube (11); The bottom of the retractable wire (9) passes through the second side branch pipe (11) and is connected to the middle of the movable filter (10), the top of the retractable wire (9) passes through the retractable head (6) and is connected to the top of the retractable head (6), and the first clamp (8) is used to clamp the retractable head (6) and the retractable wire (9).

3. The intravenous pot device according to claim 2, characterized in that: The retractable head (6) is a foldable and retractable conical structure, and the top of the retractable line (9) is connected to the top of the conical structure.

4. The intravenous pot device according to claim 3, characterized in that: The conical structure is made of plastic.

5. The intravenous pot device according to claim 3, characterized in that: When the retractable head (6) is in the maximum contraction state, the movable filter (10) fits the filter (5); when the retractable head (6) is in the maximum extension state, the height of the movable filter (10) does not exceed 3 / 4 of the intravenous pot (4).

6. The intravenous pot device according to any one of claims 2 to 5, characterized in that: The length of the retractable wire (9) remains unchanged during the upward movement of the movable filter screen (10).

7. The intravenous pot device according to any one of claims 2 to 5, characterized in that: The retractable head (6) and the second side branch pipe (11) are integrally formed parts.

8. The intravenous pot device according to any one of claims 1 to 5, characterized in that: The upper diameter of the venous pot (4) is larger than the lower diameter.

9. The intravenous pot device according to claim 8, characterized in that: The vertical cross section of the movable filter (10) is W-shaped, the middle of the W-shape is lower than both ends of the W-shape, and the middle of the W-shape is in a straight line shape.

10. A hemodialysis device, characterized in that: The venous pot device comprises any one of claims 1 to 9.

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