CN218961941U - Blood filtering device - Google Patents

Abstract

The utility model discloses a blood filtering device, which relates to the technical field of blood purification and comprises a bottom plate, an experimental vessel arranged on the bottom plate, a mounting rack arranged on the bottom plate, a container arranged on the mounting rack and used for containing blood, a filtering component arranged in the container and used for filtering impurities in the blood, and an arc-shaped pipe communicated with the container, wherein the pipe orifice at the tail end of the arc-shaped pipe faces the inner wall of the experimental vessel so as to enable the blood to flow along the inner wall of the experimental vessel. Therefore, due to the arc-shaped structural characteristics of the arc-shaped tube, on one hand, the flow speed of blood can be properly slowed down by utilizing the arc-shaped buffer of the arc-shaped tube, the friction and collision between the blood and the tube wall are reduced, and on the other hand, after the blood flows out from the end tube orifice of the arc-shaped tube, the blood flow stream can be smoothly transited to the inner wall of the experimental vessel, the collision energy between the blood and the inner wall of the experimental vessel is reduced, so that the collision and the rupture of blood cells can be prevented in the blood filtering process as much as possible, and the experimental result is prevented from being influenced.

Description

Blood filtering device

Technical Field

The utility model relates to the technical field of blood purification, in particular to a blood filtering device.

Background

Hemodialysis treatment is to draw blood outside the body and complete exchange of solutes and removal of redundant water through a semipermeable membrane and a dialysate in a dialyzer.

In order to effectively judge the performance and the safety of the dialyzer in the design and development process of the dialyzer, whether certain indexes of the dialyzer are qualified or not needs to be judged through an in-vitro experiment, and blood needs to be used in the in-vitro experiment evaluation, and the composition change in the blood and the amount of impurities have a great influence on an experiment result, so that the blood needs to be subjected to further filtration treatment before the experiment starts, and most of impurities (such as fibrinogen, tiny particles and the like) in the blood can be filtered by the blood filtering device so as to reduce the influence of the impurities in the blood on the test result.

At present, the filtering treatment of the blood in the blood purification body is mainly carried out in a form of combining a supporting iron frame with a filter screen, namely, the supporting iron frame is placed on a beaker, the size of the iron frame is ensured to be larger than that of a beaker mouth, then the filter screen made of cotton cloth materials is paved on the supporting iron frame, and blood flows into the beaker through the filter screen to realize the filtering treatment of the blood. However, in the prior art, since there is generally a certain height difference between the laboratory vessel and the filter screen, blood drops vertically into the laboratory vessel after passing through the filter screen, resulting in breakage of a portion of blood cells due to direct impact on the bottom of the laboratory vessel, thereby affecting experimental results.

Therefore, how to prevent the blood cells from impacting and cracking in the process of filtering the blood, so as to avoid influencing the experimental result, is a technical problem facing the person skilled in the art.

Disclosure of Invention

The utility model aims to provide a blood filtering device which can prevent blood cells from being impacted and broken in the blood filtering process and avoid influencing experimental results.

In order to solve the technical problems, the utility model provides a blood filtering device, which comprises a bottom plate, a laboratory vessel arranged on the bottom plate, a mounting rack arranged on the bottom plate, a container arranged on the mounting rack and used for containing blood, a filtering component arranged in the container and used for filtering impurities in the blood, and an arc-shaped pipe communicated with the container, wherein the end pipe orifice of the arc-shaped pipe faces to the inner wall of the laboratory vessel so as to enable the blood to flow along the inner wall of the laboratory vessel.

Preferably, the pipe wall of the end pipe orifice of the arc-shaped pipe is kept in abutting connection with the inner wall of the experimental vessel.

Preferably, the container is a trough-shaped piece, and the bottom side wall of the container is provided with an arc-shaped transition edge so as to slow down the impact of blood flow; the arced tube is communicated with the bottom wall of the container.

Preferably, the filter assembly comprises a first filter screen disposed on an inner wall of the container, and the first filter screen covers a cross section of the container.

Preferably, the filter assembly further comprises a support member protruding from the inner wall of the container, and the first filter screen is mounted on the top surface of the support member.

Preferably, the filter assembly further comprises a second filter screen disposed on an inner wall of the arced tube, and the second filter screen covers a cross section of the arced tube.

Preferably, the mounting frame comprises a mounting upright post erected on the surface of the bottom plate, a cantilever sleeved on the mounting upright post in an axially sliding manner, and a mounting ring arranged at the tail end of the cantilever, and the container is mounted in the mounting ring.

Preferably, a supporting ring edge is arranged on the outer edge of the top end of the container and is used for hanging on the end face of the top end of the mounting ring.

Preferably, the head end of the cantilever is provided with a collar which is in sliding fit with the mounting upright post, and an adjusting knob is connected to the side wall of the collar in a threaded manner, so that the end face of the tail end of the adjusting knob is in abutting joint or out of abutting joint with the outer edge of the mounting upright post.

Preferably, a heater for heating the laboratory vessel and a control component for controlling the heating state of the heater are embedded on the bottom plate.

The utility model provides a blood filtering device which mainly comprises a bottom plate, an experimental vessel, a mounting rack, a container, a filtering component and an arc-shaped pipe. The bottom plate is arranged on the ground, the table top and other working surfaces and is mainly used for mounting other parts. The experimental vessel is arranged on the bottom plate and is mainly used for containing blood, and in-vitro experiments are carried out on the filtered blood so as to judge whether the indexes of the dialyzer are qualified. The mounting frame is arranged on the bottom plate and is mainly used for mounting and supporting parts such as containers. The container is arranged on the mounting frame and has a certain volume, and is mainly used for containing or temporarily storing a certain amount of blood. The filter component is arranged in the container and is mainly used for filtering blood contained in the container so as to filter out impurities in the blood. The arc-shaped pipe is communicated with the container, the whole body is in the shape of an arc-shaped bent pipe, the tail end of the arc-shaped pipe extends into the experimental vessel all the time, and the pipe orifice at the tail end of the arc-shaped pipe faces the inner wall of the experimental vessel, so that blood can smoothly contact the inner wall of the experimental vessel after flowing out from the container along the arc-shaped pipe, and then flows downwards to be stored in the experimental vessel along the inner wall of the experimental vessel. Therefore, due to the arc-shaped structural characteristics of the arc-shaped tube, after blood is poured into the container, the blood is filtered by the filter assembly in the container, then enters the arc-shaped tube, flows along the arc-shaped tube, flows out from the end tube orifice of the arc-shaped tube to the inner wall of the experimental vessel, finally is gathered in the experimental vessel along the inner wall of the experimental vessel down, and during the period, the blood flows along the arc-shaped tube, on one hand, the flow speed of the blood can be properly slowed down by utilizing the arc-shaped buffer of the arc-shaped tube, the friction and collision between the blood and the tube wall when the blood flows in the arc-shaped tube are reduced, and on the other hand, the blood stream can be smoothly transited to the inner wall of the experimental vessel after the blood flows out from the end tube orifice of the arc-shaped tube, so that the collision energy between the blood and the inner wall of the experimental vessel is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic overall structure of an embodiment of the present utility model.

Fig. 2 is a sectional view showing a specific structure of the container.

Fig. 3 is a schematic diagram of a specific structure of the base plate.

Wherein, in fig. 1-3:

a bottom plate-1, a laboratory vessel-2, a mounting rack-3, a container-4, a filter assembly-5, an arc-shaped pipe-6, a heater-7, a control assembly-8 and a display screen-9;

the device comprises a mounting column-31, a cantilever-32, a mounting ring-33, a lantern ring-34, an adjusting knob-35, a transition edge-41, a supporting ring edge-42, a first filter screen-51, a supporting piece-52, a second filter screen-53, a temperature control switch-81 and a temperature adjusting knob-82.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, fig. 1 is a schematic overall structure of an embodiment of the present utility model.

In one embodiment of the present utility model, a blood filtration device is provided that generally comprises a base plate 1, a laboratory vessel 2, a mounting frame 3, a container 4, a filter assembly 5, and an arcuate tube 6.

Wherein, the bottom plate 1 is arranged on the ground, the table top and other working surfaces and is mainly used for installing other parts.

The experiment vessel 2 is arranged on the bottom plate 1 and is mainly used for containing blood, and in-vitro experiments are carried out on the filtered blood so as to judge whether the indexes of the dialyzer are qualified.

The mounting frame 3 is arranged on the bottom plate 1 and is mainly used for mounting and supporting parts such as a container 4 and the like.

The container 4 is arranged on the mounting frame 3 and has a certain volume, mainly for accommodating or temporarily storing a certain amount of blood.

The filter assembly 5 is installed in the container 4, and is mainly used for filtering the blood contained in the container 4 so as to filter out impurities in the blood.

The arc tube 6 is communicated with the container 4, is in an arc bent tube shape as a whole, the tail end of the arc tube extends into the experimental vessel 2 all the way, and the tail end tube orifice of the arc tube 6 faces the inner wall of the experimental vessel 2, so that blood can smoothly contact the inner wall of the experimental vessel 2 after flowing out of the container 4 along the arc tube 6, and flows downwards to be stored in the experimental vessel 2 along the inner wall of the experimental vessel 2.

Thus, due to the arc-shaped structural characteristic of the arc-shaped tube 6, when blood is poured into the container 4, the blood is filtered by the filter assembly 5 in the container 4, then enters the arc-shaped tube 6, flows along the arc-shaped tube 6 and flows out from the end tube orifice of the arc-shaped tube 6 to the inner wall of the experiment vessel 2, finally flows down along the inner wall of the experiment vessel 2 and is converged in the experiment vessel 2, and during the period, the blood flows along the arc-shaped tube 6, on one hand, the flow speed of the blood can be properly slowed down by utilizing the arc-shaped buffer of the arc-shaped tube 6, the friction and collision between the blood and the tube wall when the blood flows in the arc-shaped tube 6 are reduced, and on the other hand, the blood flow stream can be smoothly transited to the inner wall of the experiment vessel 2 after the blood flows out from the end tube orifice of the arc-shaped tube 6, and the collision energy between the blood and the inner wall of the experiment vessel 2 is reduced.

In summary, the blood filtering device provided in this embodiment can prevent the blood cells from being broken by impact during the blood filtering process as much as possible, and avoid influencing the experimental result.

In an alternative embodiment with respect to the arced tube 6, the wall of the end nozzle of the arced tube 6 is held in abutment with the inner wall of the laboratory vessel 2 in order to be able to directly transition to the inner wall of the laboratory vessel 2 after the blood has flowed out of the end nozzle of the arced tube 6. For example, the lower side pipe wall of the end pipe orifice of the arc-shaped pipe 6 is kept in abutting connection with the inner wall of the experiment vessel 2, and after the blood passes through the end pipe orifice of the arc-shaped pipe 6, the blood is directly transited to the inner wall of the experiment vessel 2 along the lower side pipe wall, so that the suspension flow stroke of the blood is eliminated, the increase of the flow velocity caused by the conversion of gravitational potential energy to kinetic energy in the suspension flow stroke of the blood is prevented, and the collision energy between the arc-shaped pipe 6 and the experiment vessel 2 is weakened as much as possible.

Of course, the end nozzle of the arc-shaped tube 6 can be kept at a certain distance from the inner wall of the experimental vessel 2, and the proper distance can be increased to improve the blood flow, and meanwhile, the blood flow rate cannot be increased too much.

Typically, the entire arc of the arced tube 6 is typically about 30, such as between 20 and 40, etc. The parameters such as the pipe diameter, length, and radius of curvature of the arc-shaped pipe 6 are not fixed, and are required to be determined according to the actual dimensions of the container 4 and the laboratory vessel 2.

As shown in fig. 2, fig. 2 is a specific structural sectional view of the container 4.

In an alternative embodiment with respect to the container 4, the container 4 is embodied as a trough-shaped or barrel-shaped member having a receiving trough structure and an open structure, into which blood is poured mainly through the opening and which is received through the inner receiving trough. Of course, the specific shape of the container 4 is not fixed, and other structures such as bottle-like structures, gourd-like structures, cone-like structures, etc. may be employed as well.

Further, in order to minimize the collision of blood when pouring into the container 4, the present embodiment is provided with a transition edge 41 at each side wall position of the bottom of the container 4. Specifically, the transition edges 41 are arc-shaped, and each transition edge 41 forms an arc shape on the bottom side wall of the whole container 4, so that blood can flow along the arc-shaped side wall of the container 4 when blood is poured in, and the impact of blood flow is reduced. Accordingly, to facilitate the flow of blood, the orifice of the arc tube 6 is specifically connected to the bottom wall of the container 4, and a through hole is generally formed in the bottom wall of the container 4, and the orifice of the arc tube 6 is connected to the through hole, so that the blood flows into the arc tube 6 through the through hole.

In an alternative embodiment with respect to the filter assembly 5, the filter assembly 5 is primarily a two-stage filter structure, wherein the first stage filter structure primarily comprises the first filter mesh 51. Specifically, this first filter screen 51 sets up on the inner wall of container 4, wholly is dull and stereotyped mesh structure, and this first filter screen 51 has covered the cross section of container 4, so can ensure that all blood that pours into in the container 4 can all be filtered by first filter screen 51, prevents to appear filtering the blind area.

Further, in order to facilitate the operation of the first filter screen 51 in the container 4, and prevent the problem of slowing down the filtration efficiency caused by the blockage of the first filter screen 51, the support member 52 is added to the filter assembly 5 in this embodiment. Specifically, the support 52 is provided to protrude on the inner wall of the container 4, and the first filter 51 is mounted on the top surface of the support 52. When the first filter screen 51 needs to be disassembled, the first filter screen 51 is only required to be removed from the supporting piece 52; when the first filter 51 is installed, the first filter 51 is simply placed directly on the top surface of the support 52.

In an alternative embodiment with respect to the support 52, the support 52 is of unitary construction, in particular in the form of a ring, distributed in a ring around the inner wall of the container 4 as a whole, while the outer edge of the first filter mesh 51 is supported on the top annular surface of the support 52.

In another alternative embodiment with respect to the support 52. The supporting members 52 are of a split type structure, and are provided in plurality, and each supporting member 52 is uniformly distributed or symmetrically distributed along the circumference of the inner wall of the container 4, for example, 4 to 8 supporting members are distributed, and each supporting member 52 may be in a right triangle shape, wherein one side right-angle side is connected with the inner wall of the container 4, and the other side right-angle side is kept horizontal, so as to support the first filter screen 51.

Of course, if maintenance work is not considered, the first filter 51 may be directly fixed to the inner wall of the container 4, such as welding, vulcanization fixing, or the like.

As mentioned above, the filter assembly 5 is mainly a two-stage filter structure, and the second-stage filter structure mainly includes the second filter screen 53. Specifically, the second filter 53 is specifically disposed on the inner wall of the arc tube 6, and is mainly used for filtering the blood when the blood flows through the arc tube 6. Similarly, the second filter screen 53 is also arranged on the inner wall of the arc tube 6, is integrally in a flat mesh structure, and the second filter screen 53 covers the cross section of the arc tube 6, so that all blood entering the arc tube 6 can be ensured to be filtered by the second filter screen 53, and a filtering blind area is prevented from occurring.

Further, in order to enhance the filtering efficiency, a plurality of second filter screens 53 may be simultaneously disposed in the arc-shaped pipe 6, and each second filter screen 53 may be stacked and distributed along the extending direction of the arc-shaped pipe 6, so as to implement multi-stage filtering.

As shown in fig. 3, fig. 3 is a schematic view of a specific structure of the base plate 1.

In an alternative embodiment with respect to the mounting frame 3, the mounting frame 3 is embodied as a split structure, mainly comprising mounting posts 31, cantilevers 32 and mounting rings 33. Wherein the mounting posts 31 are erected on the surface of the base plate 1 with a certain axial length or vertical height. One end of the cantilever 32 is sleeved on the mounting upright 31 and forms a sliding connection with the mounting upright 31, so that the cantilever 32 can slide along the axial direction of the mounting upright 31, namely, can perform vertical lifting movement, and the cantilever 32 has a certain length and generally keeps a horizontal posture. The mounting ring 33 is provided at the other end of the cantilever 32, and has a ring-like structure such as a circular ring or the like, and is mainly used for mounting the container 4 so that the container 4 can be placed in the mounting ring 33 or held in the mounting ring 33.

Generally, the cross-sectional shape of the container 4 is circular, while the mounting ring 33 is generally circular, and the cross-sectional diameter of the container 4 is slightly smaller than the inner diameter of the mounting ring 33, so that the container 4 can be smoothly placed into the mounting ring 33. In order to achieve a stable mounting of the container 4 in the mounting ring 33, the present embodiment is further provided with a support rim 42 on the top outer edge of the container 4. Specifically, the supporting ring edge is annular and distributed around the top outer edge of the container 4, and is mainly used for being matched with the top end face of the mounting ring 33 so as to be hung on the top end face of the mounting ring 33, and the top end face of the mounting ring 33 forms a vertical upward abutting acting force against the bottom face of the supporting ring edge 42, so that the container 4 is stably mounted in the mounting ring 33.

Meanwhile, through the vertical lifting movement of the cantilever 32 on the mounting upright post 31, the height positions of the mounting ring 33, the container 4 and the arc-shaped pipe 6 can be adjusted, so that when the laboratory vessels 2 with different specifications and different heights are faced, the height positions of the container 4 and the arc-shaped pipe 6 can be adjusted to proper positions according to actual conditions, and the terminal pipe orifice of the arc-shaped pipe 6 can be ensured to extend into the laboratory vessel 2 and face the inner wall of the laboratory vessel 2.

Further, in order to ensure that the cantilever 32 can be stably maintained at the current height position after the vertical lifting movement, an adjusting knob 35 is added in the mounting frame 3 in this embodiment. Meanwhile, in the present embodiment, a collar 34 is further provided at the head end position of the cantilever 32 to be sleeved on the mounting upright 31 through the collar 34 and form a shaft hole sliding fit with the mounting upright 31. The adjusting knob 35 is specifically inserted on the side wall of the collar 34, and is in threaded connection with the collar 34, and the adjusting knob 35 can be screwed into the collar 34 deeply or gradually screwed out of the collar 34 by screwing the adjusting knob 35 clockwise or counterclockwise. When the height position of the cantilever 32 needs to be fixed, the adjusting knob 35 is only required to be screwed clockwise, so that the tail end of the adjusting knob 35 is screwed into the sleeve ring 34 to extend until the tail end of the adjusting knob 35 is tightly abutted with the outer edge of the mounting upright 31, and the sleeve ring 34 is locked and cannot slide relative to the mounting upright 31, so that the height position of the cantilever 32 is locked; when the height of the cantilever 32 needs to be adjusted, the adjusting knob 35 is only required to be screwed anticlockwise, so that the tail end of the adjusting knob 35 moves outwards until the tail end is separated from the contact with the outer edge of the mounting upright post 31, and the collar 34 is loosened at the moment, so that vertical lifting and sliding can be smoothly performed.

In addition, considering that the temperature of the blood may be reduced during the blood filtration process, and thus the activity of blood cells is affected, and the experimental result is affected, an additional preheating process is required, for which, in this embodiment, the heater 7 and the control component 8 are added to heat the blood. Specifically, the heater 7 is embedded on the bottom plate 1, and is generally embedded in the bottom surface of the bottom plate 1, and the specific placement position of the laboratory vessel 2 on the bottom plate 1 is the installation position of the heater 7, so that the heater 7 can conveniently heat the laboratory vessel 2, and further heat blood. The control assembly 8 is mainly used for controlling the heating state of the heater 7, and mainly comprises a temperature control switch 81 and a temperature adjusting knob 82. The temperature control switch 81 is mainly used for controlling the start-stop state of the heater 7, and the temperature adjusting knob 82 can adjust the heating power of the heater 7 by rotating, so as to finely adjust the heating temperature of the blood. Generally, the temperature control switch 81 and the temperature control knob 82 are both installed on the surface of the base plate 1, so that the user can operate conveniently.

Further, in order to facilitate the user to precisely grasp the heating condition of the heater 7 on the blood in the laboratory vessel 2, the present embodiment further provides a display screen 9 on the bottom plate 1, where the display screen 9 is mainly used for displaying the temperature data of the blood in the laboratory vessel 2 detected by the detecting means such as the temperature sensor in real time.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a blood filter equipment, its characterized in that, including bottom plate (1), set up in laboratory vessel (2) on bottom plate (1), set up in mounting bracket (3) on bottom plate (1), set up in container (4) on mounting bracket (3) and be used for holding blood, install in container (4) in and be used for filtering filtration subassembly (5) of impurity in the blood, and with arc pipe (6) of container (4) intercommunication, the terminal mouth of pipe of arc pipe (6) orientation the inner wall of laboratory vessel (2), so that blood follows the inner wall of laboratory vessel (2) flows.

2. A blood filtration device according to claim 1, wherein the tube wall of the end nozzle of the arced tube (6) is held in abutment with the inner wall of the laboratory vessel (2).

3. A blood filtration device according to claim 1, wherein the container (4) is a trough-shaped piece and the bottom side wall of the container (4) is provided with a curved transition edge (41) to slow down the blood flow impact; the arc-shaped pipe (6) is communicated with the bottom wall of the container (4).

4. The blood filtration device according to claim 1, wherein the filter assembly (5) comprises a first filter screen (51) arranged on an inner wall of the container (4), and the first filter screen (51) covers a cross section of the container (4).

5. The blood filtration device of claim 4, wherein the filter assembly (5) further comprises a support member (52) protruding from an inner wall of the container (4), and the first filter screen (51) is mounted to a top surface of the support member (52).

6. The blood filtration device of claim 4, wherein the filter assembly (5) further comprises a second filter screen (53) disposed on an inner wall of the arced tube (6), and the second filter screen (53) covers a cross section of the arced tube (6).

7. The blood filtration device according to any one of claims 1 to 6, wherein the mounting frame (3) comprises a mounting column (31) erected on the surface of the base plate (1), a cantilever (32) axially slidably sleeved on the mounting column (31), and a mounting ring (33) provided at the end of the cantilever (32), and the container (4) is mounted in the mounting ring (33).

8. A blood filtration device according to claim 7, wherein a support rim (42) is provided on the top outer edge of the container (4) for hanging from the top end face of the mounting ring (33).

9. The blood filtration device according to claim 7, wherein the head end of the cantilever (32) is provided with a collar (34) for sliding engagement with the mounting post (31), and an adjustment knob (35) is screwed onto a side wall of the collar (34) so that a distal end face of the adjustment knob (35) is brought into or out of abutment with an outer edge of the mounting post (31).

10. The blood filtration device according to claim 1, wherein a heater (7) for heating the laboratory vessel (2) and a control unit (8) for controlling a heating state of the heater (7) are embedded in the bottom plate (1).

Images