CN221535109U - Hemodialysis filter - Google Patents

Abstract

The utility model relates to the technical field of hemodialysis, and in particular to a hemodialysis filter, comprising: an annular shell, wherein the upper and lower ends of the annular shell are respectively fixedly connected to the bottom end of a lower disc and the top end of an upper disc, an upper baffle and a lower baffle are respectively arranged between the upper disc and the lower disc, a warm water lower collection chamber and a warm water upper collection chamber are respectively provided inside the lower disc and the upper disc, an upper blood collection chamber is formed between the upper baffle and the upper disc, a lower blood collection chamber is formed between the lower baffle and the lower disc, a dialysis chamber is formed between the lower baffle and the upper baffle, a plurality of inner membranes and an outer membrane are provided and correspond to each other, the outer membrane is sleeved on the outer side of the inner membrane, the two ends of the inner membrane are respectively connected to the warm water lower collection chamber and the warm water upper collection chamber, and the two ends of the outer membrane are respectively connected to the blood upper collection chamber and the blood lower collection chamber. The utility model provides a hemodialysis filter which can effectively heat the filter in continuous blood purification and prevent hypothermia.

Description

A hemodialysis filter

Technical Field

The utility model relates to the technical field of hemodialysis, in particular to a hemodialysis filter.

Background Art

Continuous renal replacement therapy (CRRT) has gradually become an irreplaceable means of multi-organ protection and life support, and is widely used in clinical practice. Since the patient's blood is exposed to room temperature through extracorporeal circulation during CRRT treatment, most patients undergoing CRRT will experience a drop in body temperature. Studies have reported that up to 44% of patients have a body temperature of <35°C during CRRT. Hypothermia can cause physiological changes in patients, such as reduced basal metabolic rate, weakened cardiovascular, oxygenation, coagulation, kidney, nerve and metabolic functions. The cause of hypothermia is the rapid loss of extracorporeal circulation heat caused by a large amount of low-temperature replacement fluid or dialysate (about 2000-3000 ml/h) and rapid blood flow (about 100-300 ml/h).

At present, the clinical CRRT heating methods are: 1. The heating device that comes with the machine heats the venous blood end pipeline; 2. Cover with a blanket; 3. Warm the replacement fluid. However, the use of the heating device that comes with the blood purification equipment only heats the outside of the pipeline, which cannot solve the fundamental problem and has a poor warming effect. Studies have shown that patients can still lose about 6276kJ of heat every day; using a blanket will increase the patient's chest discomfort; the replacement fluid is only heated before use, and after use, the temperature drops over time and loses the warming effect. Therefore, the current clinical method of preventing hypothermia in patients treated with CRRT is not ideal, and the conventional warming/rewarming scheme needs to be further optimized. Publication No. CN213822860U provides a disposable hemodialysis filter, and its heating method is to set a constant temperature protection component on the outside of the filter, and to heat the blood during the hemodialysis process by heating gas. The disadvantage is that the blood temperature cannot be accurately controlled, and the high fever patient cannot be cooled down. Another publication No. CN218853218U provides a blood warming device for a hemofilter, which is also designed to add a warming half box outside the hemofilter. The disadvantage is that the contact area with the blood and the replacement fluid is small, and the heating effect on the rapid and large amount of replacement fluid is very small. In addition, the addition of a warming device outside the hemofilter cannot directly observe the use of the hemofilter.

Utility Model Content

The purpose of the utility model is to provide a hemodialysis filter to solve the technical problems existing in the above-mentioned background technology.

To achieve the above purpose, the technical solution of the utility model is as follows:

A hemodialysis filter comprises: a hemodialysis filtration device and an intelligent temperature control water system, wherein the hemodialysis filtration device comprises: a lower disc, an upper disc, an annular shell, a lower partition, an upper partition, an inner membrane, an outer membrane, a blood inlet tube, a blood discharge tube, a warm water injection tube, a warm water discharge tube, a dialysate injection port and a waste liquid discharge port, the upper and lower ends of the annular shell are respectively fixedly connected to the bottom end of the lower disc and the top end of the upper disc, the upper partition and the lower partition are respectively arranged between the upper disc and the lower disc and are respectively sealed and fixedly connected to the inner wall of the annular shell, the lower disc and the upper disc are respectively provided with a warm water lower collection chamber and a warm water upper collection chamber, an upper blood collection chamber is formed between the upper partition and the upper disc, a lower blood collection chamber is formed between the lower partition and the lower disc, a dialysis chamber is formed between the lower partition and the upper partition, and the inner membrane and the outer membrane are both provided with a plurality of and one by one Correspondingly, the inner membrane and the outer membrane are both tubular membrane bodies, the inner membrane is water-impermeable, and the outer membrane is a semi-permeable membrane that penetrates from the inside to the outside, the inner diameter of the outer membrane is larger than the outer diameter of the inner membrane, the outer membrane is sleeved on the outside of the inner membrane, the two ends of the inner membrane are respectively connected to the warm water lower collection chamber and the warm water upper collection chamber, and the two ends of the outer membrane are respectively connected to the blood upper collection chamber and the blood lower collection chamber, and the lower and upper parts of one side of the annular shell are respectively provided with a dialysate injection port and a waste liquid discharge port that are connected to the dialysis chamber, one end of the blood inlet pipe extends into the upper blood collection chamber, and the blood discharge pipe is connected to the lower blood collection chamber, one end of the warm water injection pipe extends to the upper warm water collection chamber, and one end of the warm water discharge pipe is connected to the lower warm water collection chamber, and the other ends of the warm water injection pipe and the warm water discharge pipe are respectively connected to the outlet and inlet of the intelligent temperature control water system.

Furthermore, the blood inlet tube passes through the upper disc from top to bottom and extends into the upper blood collection chamber, the end of the blood inlet tube is close to the top surface of the upper partition, the blood discharge tube passes through the lower disc from bottom to top and is connected to the lower blood collection chamber, and the end of the blood discharge tube is flush with the top surface of the lower disc.

Furthermore, one end of the warm water injection pipe is close to the bottom wall of the warm water upper collecting chamber, and one end of the warm water discharge pipe is flush with the bottom wall of the warm water lower collecting chamber.

Furthermore, the intelligent temperature-controlled water system includes: a first connecting pipe, a second connecting pipe, a water outlet, a water inlet and an intelligent temperature-controlled water tank. The front end of the intelligent temperature-controlled water tank is respectively provided with a water outlet and a water inlet. The water outlet is connected to the other end of the warm water injection pipe through the first connecting pipe, and the water inlet is connected to the other end of the warm water discharge pipe through the second connecting pipe.

Furthermore, the intelligent temperature-controlled water tank includes: a water tank body, an electric heating wire, a temperature sensor, a circulation pump, a temperature display screen and a temperature alarm, the water outlet and the water inlet are respectively connected to the water storage chamber inside the water tank body, the water storage chamber inside the water tank body is provided with an electric heating wire, the bottom of the water storage chamber is provided with a temperature sensor, a controller is built-in at the front of the water tank body, the inner end of the water outlet is connected to the output end of the circulation pump, the circulation pump is fixedly connected in the water storage chamber, the front end of the water tank body is also respectively provided with a temperature display screen and a temperature alarm, the output end of the controller is electrically connected to the electric heating wire and the circulation pump, and the output end of the temperature sensor is electrically connected to the input end of the controller.

Furthermore, a battery is built into the front of the water tank body, a wire is connected to the battery input end, a plug is connected to the other end of the wire, and the electric heating wire, temperature sensor, circulation pump, temperature display screen, temperature alarm and controller are electrically connected to the battery respectively.

Furthermore, a movable support assembly is provided at the bottom end of the water tank body.

Furthermore, the mobile support assembly includes: a support rod, a support leg and a roller, the top end of the support rod is fixedly connected to the bottom end of the water tank body, the bottom end of the support rod is fixedly connected to the support leg, and a plurality of rollers are evenly installed at the bottom end of the support leg, and the rollers are universal wheels.

Compared with the prior art, the beneficial effects of the utility model are:

Through the hemodialysis filtration device that is set up, blood is introduced from the blood inlet tube into the upper blood collecting chamber and is diverted into several tubular outer membranes. At this time, warm water of appropriate temperature heated by the intelligent temperature control water system is introduced from the warm water injection tube into the upper warm water collecting chamber and is diverted into several tubular inner membranes. Since the outer membrane is arranged on the outside of the inner membrane and the inner membrane is impermeable, the outer membrane is a semi-permeable membrane that penetrates from the inside to the outside. The temperature of the warm water can be conducted to the blood through heat conduction, and the blood drainage direction is the same as the temperature water flow direction, so the temperature of the blood is fully regulated to prevent hypothermia.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

Fig. 2 is a longitudinal sectional view of the hemodialysis filter device of the present invention;

FIG3 is a cross-sectional view of the hemodialysis filter device of the present invention;

FIG. 4 is a cross-sectional view of the utility model at the water tank body.

The numbers in the accompanying drawings are: 1-lower disc, 101-lower warm water collection chamber, 2-upper disc, 201-upper warm water collection chamber, 3-annular shell, 4-lower partition, 5-upper partition, 6-inner membrane, 7-outer membrane, 8-blood inlet pipe, 9-blood discharge pipe, 10-warm water injection pipe, 11-warm water discharge pipe, 12-dialysis fluid injection port, 13-waste liquid discharge port, 14-first connection, 15-second connecting pipe, 16-water outlet, 17-water inlet, 18-water tank body, 19-electric heating wire, 20-temperature sensor, 21-circulating pump, 22-temperature display screen, 23-temperature alarm, 24-wire, 25-plug, 26-support rod, 27-support leg, 28-roller.

DETAILED DESCRIPTION

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

Referring to FIGS. 1 to 4 , a hemodialysis filter comprises: a hemodialysis filtration device and an intelligent temperature control water system. The hemodialysis filtration device comprises: a lower disc 1, an upper disc 2, an annular shell 3, a lower baffle 4, an upper baffle 5, an inner membrane 6, an outer membrane 7, a blood inlet pipe 8, a blood outlet pipe 9, a warm water inlet pipe 10, a warm water outlet pipe 11, a dialysate inlet port 12 and a waste liquid outlet 13. The upper and lower ends of the annular shell 3 are respectively fixedly connected to the bottom of the lower disc 1. The upper end and the top of the upper disc 2, the upper baffle 5 and the lower baffle 4 are respectively arranged between the upper disc 2 and the lower disc 1 and are respectively sealed and fixedly connected to the inner wall of the annular shell 3, the lower disc 1 and the upper disc 2 are respectively provided with a warm water lower collection chamber 101 and a warm water upper collection chamber 201, an upper blood collection chamber is formed between the upper baffle 5 and the upper disc 2, a lower blood collection chamber is formed between the lower baffle 4 and the lower disc 1, and a dialysis chamber is formed between the lower baffle 4 and the upper baffle 5, and the inner membrane 6 and the outer membrane 6 are respectively provided. The membranes 7 are provided with a plurality of corresponding ones, the inner membrane 6 and the outer membrane 7 are both tubular membrane bodies, the inner membrane 6 is impermeable, the outer membrane 7 is a semi-permeable membrane that penetrates from the inside to the outside, the inner diameter of the outer membrane 7 is larger than the outer diameter of the inner membrane 6, the outer membrane 7 is sleeved on the outside of the inner membrane 6, the two ends of the inner membrane 6 are respectively connected to the warm water lower collection chamber 101 and the warm water upper collection chamber 201, the two ends of the outer membrane 7 are respectively connected to the blood upper collection chamber and the blood lower collection chamber, the lower part and the upper part of one side of the annular shell 3 are connected A dialysate injection port 12 and a waste liquid discharge port 13 which are both connected to the dialysis chamber are respectively provided, one end of the blood inlet tube 8 extends into the upper blood collecting chamber, the blood discharge tube 9 is connected to the lower blood collecting chamber, one end of the warm water injection tube 10 extends to the upper warm water collecting chamber 201, one end of the warm water discharge tube 11 is connected to the lower warm water collecting chamber 101, and the other ends of the warm water injection tube 10 and the warm water discharge tube 11 are respectively connected to the outlet and inlet ends of the intelligent temperature control water system.

The blood inlet tube 8 penetrates the upper disc 2 from top to bottom and extends into the upper blood collection chamber. The end of the blood inlet tube 8 is close to the top surface of the upper partition 5. The blood discharge tube 9 penetrates the lower disc 1 from bottom to top and is connected to the lower blood collection chamber. The end of the blood discharge tube 9 is flush with the top surface of the lower disc 1.

One end of the warm water injection pipe 10 is close to the bottom wall of the warm water upper collection chamber 201, which reduces the splashes caused by the warm water hitting the bottom wall of the warm water upper collection chamber and also improves the service life of the entire device. One end of the warm water discharge pipe 11 is flush with the bottom wall of the warm water lower collection chamber 101, so that the warm water can be completely discharged.

The intelligent temperature control water system includes: a first connecting pipe 14, a second connecting pipe 15, a water outlet 16, a water inlet 17 and an intelligent temperature control water tank. The front end of the intelligent temperature control water tank is respectively provided with a water outlet 16 and a water inlet 17. The water outlet 16 is connected to the other end of the warm water injection pipe 10 through the first connecting pipe 14, and the water inlet 17 is connected to the other end of the warm water discharge pipe 11 through the second connecting pipe 15.

The intelligent temperature-controlled water tank includes: a water tank body 18, an electric heating wire 19, a temperature sensor 20, a circulation pump 21, a temperature display screen 22 and a temperature alarm 23. The water outlet 16 and the water inlet 17 are respectively connected to the water storage cavity inside the water tank body 18. The water storage cavity inside the water tank body 18 is provided with an electric heating wire 19, and the bottom of the water storage cavity is provided with a temperature sensor 20. The front part of the water tank body 18 is built-in with a controller, and the inner side end of the water outlet 16 is connected to the output end of the circulation pump 21, and the circulation pump 21 is fixedly connected to the In the water storage chamber, a temperature display screen 22 and a temperature alarm 23 are respectively provided at the front end of the water tank body 18. The output end of the controller is electrically connected to the electric heating wire 19 and the circulating pump 21 respectively. The output end of the temperature sensor 20 is electrically connected to the input end of the controller. The water inside the water tank body 18 is heated by the arranged electric heating wire 19. The arranged temperature sensor 20 detects the water temperature in real time. The arranged circulating pump 21 can realize the circulation and utilization of water. The setting of the temperature alarm 23 can prevent the water temperature from being too high.

A battery is also built into the front of the water tank body 18, the battery input end is connected to a wire 24, the other end of the wire 24 is connected to a plug 25, and the electric heating wire 19, the temperature sensor 20, the circulating pump 21, the temperature display screen 22, the temperature alarm 23 and the controller are electrically connected to the battery respectively.

A mobile support assembly is provided at the bottom of the water tank body 18; the mobile support assembly includes: a support rod 26, a support leg 27 and a roller 28. The top end of the support rod 26 is fixedly connected to the bottom end of the water tank body 18, the bottom end of the support rod 26 is fixedly connected to the support leg 27, and a plurality of rollers 28 are evenly installed at the bottom end of the support leg 27. The rollers 28 are universal wheels. The mobile support assembly is provided to facilitate the movement and placement of the entire device.

When the device is in use, the entire device is moved into the operating room, and then the power of the entire device is turned on. The water outlet 16 is connected to the other end of the warm water injection tube 10 through the first connecting tube 14, and the water inlet 17 is connected to the other end of the warm water discharge tube 11 through the second connecting tube 15. The entire device is preheated. When preheated to a suitable temperature, the dialysate injection port 12 is connected to the dialysate injection device, and the waste liquid discharge port 13 is connected to the waste liquid collection device. Then, the blood inlet tube 8 is connected to the output end of the upstream blood extraction device, and the blood discharge tube 9 is connected to the input end of the downstream blood injection device, and the circulation pump 21 is started. At this time, the blood is introduced from the blood inlet tube 8 into the blood collection cavity and diverted into a plurality of tubular outer membranes 7. At this time, warm water of appropriate temperature heated by the intelligent temperature control water system is introduced from the warm water injection pipe 10 into the warm water upper collecting chamber 201 and diverted into several tubular inner membranes 6. Since the outer membrane 7 is sleeved on the outside of the inner membrane 6 and the inner membrane 6 is waterproof, the outer membrane 7 is a semi-permeable membrane that penetrates from the inside to the outside. Toxins and water in the blood are discharged into the permeate outside the membrane through the semi-permeable membrane. The temperature of the warm water can be transferred to the blood through heat conduction, and the blood drainage direction is the same as the temperature water flow direction. The blood is fully temperature-regulated to prevent hypothermia. The blood after dialysis heating treatment enters the blood lower collecting chamber and is led out by the blood discharge pipe 9. The water after the heat is conducted away enters the warm water lower collecting chamber 101 and is led out by the warm water discharge pipe 11.

The entire device can also use temperature control to cool down patients who still have high fever during CRRT, simply by turning off the heating function.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top/bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

The above description is only a preferred embodiment of the utility model and does not constitute any form of limitation to the utility model. Any technician familiar with the profession, without departing from the scope of the technical solution of the utility model and based on the technical essence of the utility model, may make any simple modification, equivalent replacement and improvement to the above embodiment, which shall still fall within the scope of protection of the technical solution of the utility model.

Claims (8)

1. A hemodialysis filter, comprising: hemodialysis filter and intelligent control by temperature change water system, hemodialysis filter includes: the lower disc (1), the upper disc (2), the annular shell (3), the lower partition plate (4), the upper partition plate (5), the inner layer membrane (6), the outer layer membrane (7), the blood inlet pipe (8), the blood outlet pipe (9), the warm water inlet pipe (10), the warm water outlet pipe (11), the dialysate filling port (12) and the waste liquid outlet (13), the upper end and the lower end of the annular shell (3) are respectively fixedly connected with the bottom end of the lower disc (1) and the top end of the upper disc (2), the upper partition plate (5) and the lower partition plate (4) are respectively arranged between the upper disc (2) and the lower disc (1) at intervals and are respectively and fixedly connected with the inner wall of the annular shell (3) in a sealing way, a warm water collecting cavity (101) and a warm water upper collecting cavity (201) are respectively formed inside the lower disc (1) and the upper partition plate (2), a blood upper collecting cavity is formed between the lower partition plate (4) and the lower disc (1), the inner layer membrane (6) and the inner layer membrane (7) are respectively arranged in a plurality of water impermeable tubular shape, the inner layer membrane (6) and the inner layer membrane (7) are arranged in a plurality of water permeable tubular shape, the utility model discloses a dialysis device, including outer membrane (7), inner membrane (7), warm water injection pipe (10) and warm water discharge pipe (11), outer membrane (7) are the semi-permeable membrane that from inside to outside, the internal diameter of outer membrane (7) is greater than the external diameter of inner membrane (6), outer membrane (7) cover is established in the inner membrane (6) outside, collect chamber (101) and warm water under water collection chamber (201) under intercommunication respectively in the both ends of inner membrane (6), collect chamber and blood under collection chamber under intercommunication respectively in the both ends of outer membrane (7), annular shell (3) one side lower part and upper portion are equipped with dialysate filling port (12) and waste liquid discharge port (13) that are all linked together with the dialysis chamber respectively, blood advances filling pipe (8) one end and extends into and collect the intracavity portion on the blood, blood discharge pipe (9) are linked together with blood under collection chamber, warm water injection pipe (10) one end extends to warm water under collection chamber (201) inside, warm water discharge pipe (11) one end is linked together with warm water under water collection chamber (101) respectively, the other end of warm water injection pipe (10) and warm water discharge pipe (11) is connected intelligent temperature control water inlet system respectively.

2. A hemodialysis filter according to claim 1, wherein: the blood feeding and injecting tube (8) penetrates through the upper disc (2) from top to bottom and extends into the blood upper collecting cavity, the end part of the blood feeding and injecting tube (8) is close to the top end surface of the upper partition plate (5), the blood discharging tube (9) penetrates through the lower disc (1) from bottom to top and is communicated with the blood lower collecting cavity, and the end part of the blood discharging tube (9) is flush with the top end surface of the lower disc (1).

3. A hemodialysis filter according to claim 1, wherein: one end of the warm water injection pipe (10) is close to the bottom wall of the warm water upper collecting cavity (201), and one end of the warm water discharge pipe (11) is flush with the bottom wall of the warm water lower collecting cavity (101).

4. A hemodialysis filter according to claim 1, wherein: the intelligent temperature control water system comprises: the intelligent temperature control water tank is characterized by comprising a first connecting pipe (14), a second connecting pipe (15), a water outlet nozzle (16), a water inlet nozzle (17) and an intelligent temperature control water tank, wherein the water outlet nozzle (16) and the water inlet nozzle (17) are respectively arranged at the front end of the intelligent temperature control water tank, the water outlet nozzle (16) is communicated with the other end of a warm water injection pipe (10) through the first connecting pipe (14), and the water inlet nozzle (17) is communicated with the other end of a warm water discharge pipe (11) through the second connecting pipe (15).

5. A hemodialysis filter according to claim 4, wherein: the intelligent temperature control water tank includes: the water tank comprises a water tank body (18), an electric heating wire (19), a temperature sensor (20), a circulating pump (21), a temperature display screen (22) and a temperature alarm (23), wherein a water outlet nozzle (16) and a water inlet nozzle (17) are respectively communicated with a water storage cavity inside the water tank body (18), the electric heating wire (19) is arranged in the water storage cavity inside the water tank body (18), the temperature sensor (20) is arranged at the bottom end of the water storage cavity, a controller is arranged in the front portion of the water tank body (18), the inner side end of the water outlet nozzle (16) is communicated with the output end of the circulating pump (21), the circulating pump (21) is fixedly connected in the water storage cavity, the front end of the water tank body (18) is also respectively provided with the temperature display screen (22) and the temperature alarm (23), the output end of the controller is respectively electrically connected with the electric heating wire (19) and the circulating pump (21), and the output end of the temperature sensor (20) is electrically connected with the input end of the controller.

6. A hemodialysis filter according to claim 5, wherein: the water tank is characterized in that a storage battery is further arranged in the front portion of the water tank body (18), a lead (24) is connected to the input end of the storage battery, a plug (25) is connected to the other end of the lead (24), and the storage battery is electrically connected to the electric heating wire (19), the temperature sensor (20), the circulating pump (21), the temperature display screen (22), the temperature alarm (23) and the controller respectively.

7. A hemodialysis filter according to claim 5, wherein: the bottom end of the water tank body (18) is provided with a movable supporting component.

8. A hemodialysis filter according to claim 7, wherein: the mobile support assembly includes: bracing piece (26), supporting leg (27) and gyro wheel (28), bracing piece (26) top fixed connection is in water tank box (18) bottom, bracing piece (26) bottom fixedly connected with supporting leg (27), a plurality of gyro wheel (28) are evenly installed to supporting leg (27) bottom, gyro wheel (28) are the universal wheel.