Blood bag exhaust device and blood filter

Abstract

The utility model provides a blood bag exhaust device and a blood filter, the blood bag exhaust device comprises a mounting seat, and the mounting seat is provided with a first peristaltic mechanism and a second peristaltic mechanism. The first wriggling mechanism is provided with a first pipe groove and a first extrusion assembly, and the first extrusion assembly can stretch into the first pipe groove to extrude the bypass hose and retreat from the first pipe groove to release the bypass hose. The second wriggling mechanism is provided with a second pipe groove and a second extrusion assembly, and the second extrusion assembly can stretch into the second pipe groove to extrude the filtering hose and retreat from the second pipe groove to release the filtering hose. The driving module is electrically connected with the control module, is in driving connection with the first extrusion assembly and the second extrusion assembly and is used for driving the first extrusion assembly to extrude / release the bypass hose and driving the second extrusion assembly to extrude / release the filter hose. Automatic filtering, exhausting and blood sample reserving are achieved, and the problems that time and labor are consumed and efficiency is low due to manual control over a check valve, exhausting and blood sample reserving are effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a blood bag exhaust device and a blood filter. Background Art

[0002] Blood collection bags with filters are usually used to filter blood, such as filtering white blood cells in whole blood, or adding methylene blue to plasma, filtering after light exposure to achieve plasma virus inactivation. Blood collection bags include triple bags, quadruple bags, and quintuple bags. Figure 1 Two of the bag combinations 10 are shown: the bag to be filtered 11 is connected to the transfer bag 17 through the main hose 12, the first three-way 13, the filter hose 14, the filter 15, the second three-way 16, and the transfer bag 17. A bypass hose 18 with a stop valve (not shown) is also provided between the first three-way 13 and the second three-way 16, which is connected in parallel with the filter hose 14 and the filter 15. In the filtering state, the stop valve of the bypass hose 18 needs to be closed to block the blood flow, so that the blood in the bag to be filtered 11 is collected to the transfer bag 17 through the filter hose 14 and the filter 15. If the filtering is abnormal (too fast or too slow, blocked, etc.), the stop valve is opened to allow the blood in the bag to be filtered 11 to be directly collected to the transfer bag 17 through the bypass hose 18 for further processing. The whole blood after leukofiltration needs to be exhausted before entering the blood centrifugation and blood component separation process, otherwise it will affect the effect of blood centrifugation and blood component separation. The plasma after virus inactivation needs to be frozen and stored. Due to the coagulation of blood, the volume increases. If there is air mixed, the space for plasma expansion is relatively small, and the blood bag is easy to rupture. In addition, the filtered whole blood and plasma need to be sampled on the main hose 12 and heat-sealed to form a sample braid. Currently, the filtration work is mainly completed by manually controlling the stop valve and squeezing the transfer bag 15 to remove the air in the transfer bag 15 and to leave the blood sample, which makes the operation cumbersome, the labor intensity of the workers is very high, and there will be relatively large human errors. Utility Model Content

[0003] The purpose of the present application is to overcome the deficiencies of the prior art and to provide a blood bag exhaust device and a blood filter to solve the time-consuming, labor-intensive and inefficient problems caused by the need to manually control the stop valve before blood filtration, the need to manually clear the air in the bag after blood filtration, and the manual blood sampling.

[0004] The embodiments of the present application solve the above-mentioned problems through the following technical solutions.

[0005] This embodiment provides a blood bag exhaust device, including a mounting seat, the mounting seat is provided with a first pipe groove for accommodating an external bypass hose, a first peristaltic mechanism is installed in the mounting seat, the first peristaltic mechanism has a first extrusion assembly, the first extrusion assembly can extend into the first pipe groove to squeeze the bypass hose and exit the first pipe groove to release the bypass hose;

[0006] The mounting seat is also provided with a second pipe groove for accommodating an external filter hose, and a second peristaltic mechanism is installed in the mounting seat, and the second peristaltic mechanism has a second extrusion assembly, and the second extrusion assembly can extend into the second pipe groove to squeeze the filter hose and exit the second pipe groove to release the filter hose;

[0007] It also includes a control module and a driving module installed on the mounting seat. The driving module is electrically connected to the control module. The driving module is respectively connected to the first peristaltic mechanism and the second peristaltic mechanism for driving the first peristaltic mechanism to extrude / release the bypass hose and driving the second peristaltic mechanism to extrude / release the filter hose.

[0008] In some embodiments, the mounting base includes an outer shell and an internal mounting plate, the first peristaltic mechanism and the second peristaltic mechanism are fixedly mounted on the mounting plate, the outer shell is provided with a first opening corresponding to the first tube groove position and a second opening corresponding to the second tube groove position, the bypass hose is placed into the first tube groove from the first opening, and the filter hose is placed into the second tube groove from the second opening.

[0009] In some embodiments, the control module is used to control the driving module to put the first peristaltic mechanism and the second peristaltic mechanism in four states:

[0010] In the initial state, the first extrusion assembly does not squeeze the bypass hose, and the second extrusion assembly does not squeeze the filter hose;

[0011] In the filtering state, the first squeezing component continuously squeezes the bypass hose to block blood circulation, and the second squeezing component does not squeeze the filtering hose;

[0012] In the exhaust state, the first extrusion component alternately squeezes and releases the bypass hose, and the second extrusion component alternately squeezes and releases the filter hose or continuously squeezes the filter hose to block blood circulation;

[0013] In the blocking state, the first squeezing component continuously squeezes the bypass hose to block blood circulation, and the second squeezing component continuously squeezes the filter hose to block blood circulation.

[0014] In some embodiments, the first peristaltic mechanism includes a first rotating disk, a first extrusion plate and a plurality of first extrusion rollers, the first extrusion plate is arranged at the edge of the first rotating disk, the plurality of first extrusion rollers are circumferentially spaced and rotatably installed on the first rotating disk, the first extrusion plate and the plurality of first extrusion rollers constitute a first extrusion assembly, and the space between the first extrusion plate and the plurality of first extrusion rollers forms a first tube groove; the driving module is drivingly connected to the first rotating disk to drive the first rotating disk to rotate, and the plurality of first extrusion rollers can be driven by the rotating disk to extend into the first tube groove in turn to press against the first extrusion plate to squeeze the bypass hose and exit the first tube groove to release the bypass hose;

[0015] The second peristaltic mechanism includes a second turntable, a second extrusion plate and a plurality of second extrusion rollers. The second extrusion plate is arranged at the edge of the second turntable. The plurality of second extrusion rollers are circumferentially spaced and rotatably installed on the second turntable. The second extrusion plate and the plurality of second extrusion rollers constitute a second extrusion assembly. The space between the second extrusion plate and the plurality of second extrusion rollers forms a second tube groove. The driving module is connected to the second turntable to drive the second turntable to rotate. Driven by the turntable, the plurality of second extrusion rollers can be extended into the second tube groove in turn to press against the second extrusion plate to squeeze the filter hose and exit the second tube groove to release the filter hose.

[0016] In some embodiments, the first extrusion plate has a first curved surface on its surface facing the first tube groove, which abuts against the edge of the first turntable portion; the second extrusion plate has a second curved surface on its surface facing the second tube groove, which abuts against the edge of the second turntable portion.

[0017] In some embodiments, the driving module includes a driving member and a transmission mechanism, the transmission mechanism includes a driving gear and two passive gears, the power output end of the driving member is connected to the driving gear to drive the driving gear to rotate, the first turntable and the second turntable are respectively installed on the two passive gears, and the two passive gears are respectively meshed with the driving gear.

[0018] In some embodiments, in the initial state, multiple first extrusion rollers do not extend into the first tube groove to extrude the bypass hose, and multiple second extrusion rollers do not extend into the second tube groove to extrude the filter hose; in the filtering state, the driving member drives the first turntable and the second turntable to rotate by a first angle from the position in the initial state, at least one first extrusion roller extends into the first tube groove to continuously squeeze the bypass hose, and multiple second extrusion rollers do not extend into the second tube groove to squeeze the filter hose; in the exhaust state, the driving member drives the first turntable and the second turntable to rotate continuously, multiple first extrusion rollers alternately extend into the first tube groove to extrude the bypass hose and exit the first tube groove to release the bypass hose, and multiple second extrusion rollers alternately extend into the second tube groove to extrude the filter hose and exit the second tube groove to release the filter hose; in the blocking state, the driving member drives the first turntable and the second turntable to rotate by a second angle from the position in the initial state, at least one first extrusion roller extends into the first tube groove to continuously squeeze the bypass hose, and at least one second extrusion roller extends into the second tube groove to continuously squeeze the filter hose.

[0019] In some embodiments, the first rotating disk is divided into a sector-shaped first air-avoiding area and a first roller installation area, a plurality of first extrusion rollers are installed at equal intervals in the first roller installation area, the first air-avoiding area is not installed with the first extrusion roller, and in an initial state, the first air-avoiding area rotates to face the first tube groove;

[0020] The second turntable is divided into two sector-shaped, oppositely arranged second air avoidance areas and two sector-shaped, oppositely arranged second roller installation areas. Multiple second extrusion rollers are installed in the two second roller installation areas at equal intervals. No second extrusion rollers are installed in the two second air avoidance areas. In the initial state, one of the second air avoidance areas rotates to face the second tube slot. In the filtering state, the other second air avoidance area rotates to face the second tube slot.

[0021] In some embodiments, the number of first extrusion rollers is 5, and the angle between two adjacent first extrusion rollers on the first roller installation area and the center of the first rotating disk as the circle point is 60 degrees; the number of second extrusion rollers is 4, and the angle between two second extrusion rollers on the same second roller installation area and the center of the second rotating disk as the circle point is 60 degrees;

[0022] The first angle is when the first turntable and the second turntable rotate 180° clockwise from their initial positions, and the second angle is when the first turntable and the second turntable rotate 60° clockwise from their initial positions.

[0023] In some embodiments, the driving module includes two driving members, and the power output ends of the two driving members are respectively connected to the first turntable and the second turntable one by one to drive the first turntable and the second turntable to rotate respectively; in the initial state, multiple first extrusion rollers do not extend into the first tube groove to extrude the bypass hose, and multiple second extrusion rollers do not extend into the second tube groove to extrude the filter hose; in the filtering state, at least one first extrusion roller extends into the first tube groove to continuously squeeze the bypass hose, and multiple second extrusion rollers do not extend into the second tube groove to squeeze the filter hose; in the exhaust state, multiple first extrusion rollers alternately extend into the first tube groove to squeeze the bypass hose and exit the first tube groove to release the bypass hose, and multiple second extrusion rollers alternately extend into the second tube groove to squeeze the filter hose and exit the second tube groove to release the filter hose or extend into the second tube groove to continuously squeeze the filter hose; in the blocking state, at least one first extrusion roller extends into the first tube groove to continuously squeeze the bypass hose, and at least one second extrusion roller extends into the second tube groove to continuously squeeze the filter hose.

[0024] In some embodiments, the first peristaltic mechanism includes a first rotating disk, a first movable extrusion plate and a plurality of first extrusion rollers, the first movable extrusion plate is arranged on the side of the first rotating disk, the plurality of first extrusion rollers are equidistantly spaced along the circumference of the first rotating disk and are rotatably installed on the first rotating disk, the first movable extrusion plate and the plurality of first extrusion rollers constitute a first extrusion assembly, and the space between the first movable extrusion plate and the plurality of first extrusion rollers forms a first tube groove;

[0025] The second peristaltic mechanism includes a second rotating disk, a second movable extrusion plate and a plurality of second extrusion rollers, the second movable extrusion plate is arranged on the side of the second rotating disk, the plurality of second extrusion rollers are equidistantly spaced and rotatably installed on the second rotating disk along the circumference of the second rotating disk, the second movable extrusion plate and the plurality of second extrusion rollers constitute a second extrusion assembly, and the space between the second movable extrusion plate and the plurality of second extrusion rollers forms a second tube groove;

[0026] The driving module includes a first movable extrusion plate driving member, a second movable extrusion plate driving member and a turntable driving member, the first movable extrusion plate driving member is drivingly connected to the first movable extrusion plate to drive the first movable extrusion plate to approach or move away from the first turntable, the second movable extrusion plate driving member is drivingly connected to the second movable extrusion plate to drive the second movable extrusion plate to approach or move away from the second turntable, and the turntable driving member is drivingly connected to the first turntable and the second turntable respectively to drive the first turntable and the second turntable to rotate;

[0027] In the initial state, the first movable squeezing plate is away from the first rotating disk and does not extend into the first tube groove to cooperate with the multiple first squeezing rollers to squeeze the bypass hose, and the second movable squeezing plate is away from the second rotating disk and does not extend into the second tube groove to cooperate with the multiple first squeezing rollers to squeeze the filter hose; in the filtering state, the first movable squeezing plate is close to the first rotating disk and extends into the first tube groove to cooperate with at least one first squeezing roller to continuously squeeze the bypass hose, and the second movable squeezing plate is away from the second rotating disk and does not extend into the second tube groove to cooperate with the multiple second squeezing rollers to squeeze the filter hose; in the exhaust state, the first rotating disk and the second rotating disk continuously rotate on their own, the first movable squeezing plate is close to the first rotating disk and extends into the first tube groove to cooperate with the multiple first squeezing rollers to alternately squeeze and release the bypass hose, and the second movable squeezing plate is close to the second rotating disk and extends into the second tube groove to cooperate with the multiple second squeezing rollers to alternately squeeze and release the filter hose; in the blocking state, the first movable squeezing plate is close to the first rotating disk and extends into the first tube groove to cooperate with at least one first squeezing roller to squeeze the bypass hose, and the second movable squeezing plate is close to the second rotating disk and extends into the second tube groove to cooperate with at least one second squeezing roller to squeeze the filter hose.

[0028] In some embodiments, the driving component is a motor, and the control module includes a single chip microcomputer or a DSP or an ARM or a PLC or an FPGA.

[0029] In some embodiments, the mounting seat is further equipped with a first baffle, which is arranged on a side of the first tube groove away from the first extrusion plate, and a limiting clamping bead is installed on the side of the first baffle facing the first tube groove; and / or

[0030] The mounting seat is also equipped with a second baffle, which is arranged on a side of the second tube groove away from the second extrusion plate, and a limiting clamping bead is installed on the side of the second baffle facing the second tube groove.

[0031] This embodiment provides a blood filter, comprising a blood bag exhaust device according to any one of the above embodiments of the claims, wherein the number of the blood bag exhaust devices is multiple, and the blood filter further comprises multiple hooks for bags to be filtered and multiple transfer bag receiving chambers.

[0032] Beneficial effects of the present application: The blood bag exhaust device of the present application utilizes the first peristaltic mechanism to squeeze / release the bypass hose, and utilizes the second peristaltic mechanism to squeeze / release the filter hose. During filtering, the first peristaltic mechanism can be used to replace the stop valve to continuously squeeze the bypass hose to block blood circulation, so that the blood in the bag to be filtered is collected to the transfer bag through the filter hose and the filter; during exhaust, the first peristaltic mechanism is used to alternately squeeze and release the bypass hose, and the second peristaltic mechanism is used to alternately squeeze and release the filter hose or the second peristaltic mechanism is used to continuously squeeze the filter hose, so that the air in the transfer bag is discharged back to the bag to be filtered through the bypass hose and the filter hose or only through the bypass hose, and the blood in the transfer bag can be returned to the main hose to realize blood sampling. The problem of time-consuming, labor-consuming, and low efficiency caused by manually controlling the stop valve, exhausting, and blood sampling is effectively solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 It is a structural schematic diagram of two linked bag combinations;

[0035] Figure 2 This is a diagram showing the use status of an embodiment of the blood bag exhaust device of the present application;

[0036] Figure 3 This is a schematic structural diagram of an embodiment of a blood bag exhaust device of the present application;

[0037] Figure 4 for Figure 3 A schematic diagram of the structure of the provided blood bag exhaust device without the housing of the mounting base;

[0038] Figure 5 This is a diagram showing the use state of the blood bag exhaust device embodiment of the present application in the initial state;

[0039] Figure 6 This is a diagram showing the use state of the blood bag exhaust device embodiment of the present application in the filtering state;

[0040] Figure 7 This is a diagram showing the use state of the blood bag exhaust device embodiment of the present application in the exhaust state;

[0041] Figure 8 This is a diagram showing the use state of the blood bag exhaust device embodiment of the present application in a blocking state;

[0042] Fig. 9 for Figure 3 A partial structural schematic diagram of a combination of a first peristaltic mechanism, a second peristaltic mechanism and a drive module in a blood bag exhaust device provided;

[0043] Fig.10 for Figure 3 A cross-sectional schematic diagram of a blood bag venting device is provided;

[0044] Fig.11 for Figure 4 A schematic structural diagram of the blood bag exhaust device provided with the mounting base shell removed from another perspective. DETAILED DESCRIPTION

[0045] 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. In the description of the utility model, it should be noted that unless otherwise clearly stipulated and limited, the terms "installed", "located on", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0046] refer to Figures 2 to 4As shown, the blood bag exhaust device 20 in this embodiment includes a mounting seat 21, and the mounting seat 21 includes a shell 211 and an internal mounting plate 212. The blood bag exhaust device 20 also includes a control module (not shown in the figure) and a first peristaltic mechanism 22, a second peristaltic mechanism 23 and a driving module 24 installed in the mounting seat 21. The first peristaltic mechanism 22, the second peristaltic mechanism 23 and the driving module 24 are all fixedly mounted on the mounting plate 212 and are wrapped by the shell 211 for protection. The first peristaltic mechanism 22 is provided with a first pipe groove 221 and a first extrusion assembly 222, and the second peristaltic mechanism 23 is provided with a second pipe groove 231 and a second extrusion assembly 232. The control module is electrically connected to the driving module 24, and the driving module 24 is respectively connected to the first extrusion assembly 222 and the second extrusion assembly 232. The first tube groove 221 is used to accommodate the external bypass hose 18. The housing 211 is provided with a first opening 2111 corresponding to the position of the first tube groove 221. The bypass hose 18 is placed in the first tube groove 221 from the first opening 2111. The first extrusion assembly 222 can extend into the first tube groove 221 to extrude the bypass hose 18 and exit the first tube groove 221 to release the bypass hose 18 (i.e., release the extrusion of the bypass hose 18). The second tube groove 231 is used to accommodate the external filter hose 14. The housing 211 is provided with a second opening 2112 corresponding to the position of the second tube groove 231. The filter hose 14 is placed in the second tube groove 231 from the second opening 2112. The second extrusion assembly 232 can extend into the second tube groove 231 to extrude the filter hose 14 and exit the second tube groove 231 to release the filter hose 14 (i.e., release the extrusion of the filter hose 14). The control module includes a single chip microcomputer or a DSP or an ARM or a PLC or an FPGA. By squeezing / releasing the bypass hose 18 by the first peristaltic mechanism 22 and squeezing / releasing the filter hose 14 by the second peristaltic mechanism 23, the bypass hose 18 can be automatically blocked to complete the filtering work and the automatic exhaust work. Figures 5 to 8 As shown, when the blood bag exhaust device 20 is used, the bypass hose 18 is placed in the first tube groove 221, and the filter hose 14 is placed in the second tube groove 231. Figure 5 ), the first extrusion assembly 222 of the first peristaltic mechanism 22 does not extend into the first tube groove 221 to extrude the bypass hose 18, and the second extrusion assembly 232 of the second peristaltic mechanism 23 does not extend into the second tube groove 231 to extrude the filter hose 14; when filtering is required ( Figure 6 ), the control module controls the driving module 24 to drive the first squeezing component 222 to extend into the first tube groove 221 to continuously squeeze the bypass hose 18 (that is, completely squeeze the bypass hose 18 so that its inner walls fit together), blocking the blood in the bag to be filtered 11 from flowing to the transfer bag 17 through the bypass hose 18, and the second squeezing component 232 does not extend into the second tube groove 231 to squeeze the filter hose 14, and the blood in the bag to be filtered 11 flows to the transfer bag 17 through the filter hose 14 and the filter 15; when the blood filtration work is completed, exhaust is required ( Figure 7 ), the control module controls the driving module 24 to drive the first squeezing component 222 to alternately squeeze / release the bypass hose 18, and then drives the second squeezing component 232 of the second peristaltic mechanism 23 to alternately squeeze / release the filter hose 14 or continuously squeeze the filter hose 14, so that the air in the transfer bag 17 is discharged back to the filter bag 11 through the bypass hose 18 and the filter hose 14 or only through the bypass hose 18. In addition, continuous peristalsis can make the blood in the transfer bag 17 flow back to the main hose 12 to achieve blood sampling; when the exhaust work is completed, it is necessary to block the blood circulation ( Figure 8 ), the control module controls the driving module 24 to drive the first squeezing component 222 to extend into the first tube groove 221 to continuously squeeze the bypass hose 18, blocking the blood in the bag to be filtered 11 from flowing to the transfer bag 17 through the bypass hose 18, and the control module controls the driving module 24 to drive the second squeezing component 232 of the second peristaltic mechanism 23 to extend into the second tube groove 231 to continuously squeeze the filter hose 14, blocking the blood in the bag to be filtered 11 from flowing to the transfer bag 17 through filtration. The blood bag exhaust device 20 of this embodiment effectively solves the problems of time-consuming, labor-consuming, and low efficiency caused by manually controlling the stop valve, exhausting, and retaining blood samples.

[0047] refer to Figure 4 and Fig. 9As shown, the first peristaltic mechanism 22 includes a first rotating disk 223, a first extrusion plate 2221 and a plurality of first extrusion rollers 2222. The first extrusion plate 2221 is arranged at the edge of the first rotating disk 223. The plurality of first extrusion rollers 2222 are circumferentially spaced and rotatably installed on one side of the first rotating disk 223. The axial direction of the first extrusion rollers 2222 is consistent with the axial direction of the first rotating disk 223, and the central axis of all the first extrusion rollers 2222 is at the same distance from the center of the first rotating disk 223. The edge of the first extrusion roller 2222 can be flush with the edge of the first rotating disk 223 or exceed the edge of the first rotating disk 223. The first extrusion plate 2221 and the plurality of first extrusion rollers 2222 form a first extrusion assembly 222, and the space between the first extrusion plate 2221 and the plurality of first extrusion rollers 2222 forms a first tube groove 221. The driving module 24 is connected to the first rotating disk 223 to drive the first rotating disk 223 to rotate. Driven by the rotating disk, the plurality of first extrusion rollers 2222 can be extended into the first tube groove 221 to press against the first extrusion plate 2221 to squeeze the bypass hose 18 and withdraw from the first tube groove 221 to release the bypass hose 18. Preferably, in the illustrated embodiment, the first rotating disk 223 includes a first upper rotating disk 2231 and a first lower rotating disk 2232. The plurality of first extrusion rollers 2222 are installed between the first upper rotating disk 2231 and the first lower rotating disk 2232. The first upper rotating disk 2231 has a space-avoiding cutout for the bypass hose 18 to be placed in the first tube groove 221. The first extrusion roller 2222 is composed of a roller and a column. The column is fixedly installed on the first rotating disk 223. The roller is sleeved on the column and can rotate by external force.

[0048] The second peristaltic mechanism 23 includes a second rotating disk 233, a second extrusion plate 2321 and a plurality of second extrusion rollers 2322. The second extrusion plate 2321 is arranged at the edge of the second rotating disk 233. The plurality of second extrusion rollers 2322 are circumferentially spaced and rotatably mounted on the second rotating disk 233. The axial direction of the second extrusion rollers 2322 is consistent with the axial direction of the second rotating disk 233, and the central axes of all the second extrusion rollers 2322 are at the same distance from the center of the second rotating disk 233. The second extrusion plate 2321 and the plurality of second extrusion rollers 2322 form a second extrusion assembly 232, and the space between the second extrusion plate 2321 and the plurality of second extrusion rollers 2322 forms a second tube groove 231. The driving module 24 is connected to the second rotating disk 233 to drive the second rotating disk 233 to rotate. Driven by the second rotating disk 233, the plurality of second squeezing rollers 2322 can be extended into the second tube groove 231 to press against the second squeezing plate 2321 to squeeze the filter hose 14 and withdraw from the second tube groove 231 to release the filter hose 14. Preferably, in the illustrated embodiment, the second rotating disk 233 includes a second upper rotating disk 2331 and a second lower rotating disk 2332. The plurality of second squeezing rollers 2322 are installed between the second upper rotating disk 2331 and the second lower rotating disk 2332. The second upper rotating disk 2331 has a space-avoiding cutout for the filter hose 14 to be placed in the second tube groove 231. The second squeezing roller 2322 is composed of a roller and a column. The column is fixedly installed on the second rotating disk 233. The roller is sleeved on the column and can rotate by external force.

[0049] A first curved surface 22211 is provided on the surface of the first extrusion plate 2221 facing the first tube groove 221, and the first curved surface 22211 abuts against a portion of the edge of the first turntable 223. A second curved surface 23211 is provided on the surface of the second extrusion plate 2321 facing the second tube groove 231, and the second curved surface 23211 abuts against a portion of the edge of the second turntable 233. The curved surface structure is conducive to completely squeezing the hose to block blood circulation and efficient exhaust.

[0050] refer to Figure 4 , Fig. 9 As shown, in this embodiment, the driving module 24 includes a driving member 241 and a transmission mechanism, the transmission mechanism is composed of a driving gear 242 and two passive gears 243, the power output end of the driving member 241 is fixedly connected to the center of the driving gear 242 to drive the driving gear 242 to rotate, the first rotating disk 223 and the second rotating disk 233 are respectively installed on the two passive gears 243, and the two passive gears 243 are respectively meshed with the driving gear 242. When the driving gear 242 rotates counterclockwise, the first rotating disk 223 and the second rotating disk 233 rotate clockwise at the same time and the rotation angles are the same. Figures 5 to 8As shown, when the blood bag exhaust device 20 of this embodiment is used, the bypass hose 18 is placed in the first tube groove 221, and the filter hose 14 is placed in the second tube groove 231. Figure 5 ), the plurality of first extrusion rollers 2222 do not extend into the first tube groove 221 to extrude the bypass hose 18, and the plurality of second extrusion rollers 2322 do not extend into the second tube groove 231 to extrude the filter hose 14; in the filtering state, the driving member 241 drives the first rotating disk 223 and the second rotating disk 233 to rotate from the positions in the initial state to a first angle (such as Figure 6 In the embodiment, the first rotating disk 223 and the second rotating disk 233 are rotated 180° clockwise. At least one first squeezing roller 2222 extends into the first tube groove 221 to continuously squeeze the bypass hose 18 to block the blood in the filter bag 11 from flowing to the transfer bag 17 through the bypass hose 18. Due to the different numbers or layouts of the squeezing rollers installed on the first rotating disk 223 and the second rotating disk 233, the plurality of second squeezing rollers 2322 do not extend into the second tube groove 231 to squeeze the filter hose 14. The blood in the filter bag 11 flows to the transfer bag 17 through the filter hose 14 and the filter 15. In the exhaust state ( Figure 7 ), the driving member 241 drives the first rotating disk 223 and the second rotating disk 233 to rotate continuously, and the plurality of first squeezing rollers 2222 alternately extend into the first tube groove 221 to squeeze the bypass hose 18 and exit the first tube groove 221 to release the bypass hose 18, and the plurality of second squeezing rollers 2322 alternately extend into the second tube groove 231 to squeeze the filter hose 14 and exit the second tube groove 231 to release the filter hose 14, so that the air in the transfer bag 17 is discharged back to the filter bag 11 through the bypass hose 18 and the filter hose 14. In addition, continuous peristalsis can make the blood in the transfer bag 17 flow back to the main hose 12 to realize blood sampling; in the blocking state, the driving member 241 drives the first rotating disk 223 and the second rotating disk 233 to rotate from the position in the initial state to a second angle (such as Figure 8 In the embodiment, the first rotating disk 223 and the second rotating disk 233 are driven by a driving member 241 (such as a motor) to drive the first rotating disk 223 and the second rotating disk 233 to be in four states, thereby reducing the cost of the device.

[0051] refer to Fig.10As shown, the first turntable 223 is divided into a fan-shaped first air avoidance area a and a first roller installation area b. A plurality of first extrusion rollers 2222 are installed at equal intervals in the first roller installation area b. The first air avoidance area a is not installed with first extrusion rollers 2222. In the initial state, the first air avoidance area a rotates toward the first tube groove 221, and the plurality of first extrusion rollers 2222 do not extend into the first tube groove 221 to extrude the bypass hose 18. The second turntable 233 is divided into two fan-shaped second air avoidance areas c which are oppositely arranged and have the same area, and two second roller installation areas d which are oppositely arranged and have the same area. A plurality of second extrusion rollers 2322 are installed in the two second roller installation areas d at equal intervals. No second extrusion roller 2322 is installed in the two second air avoidance areas c. In the initial state, one of the second air avoidance areas c rotates to face the second tube groove 231, and the plurality of second extrusion rollers 2322 do not extend into the second tube groove 231 to extrude the filter hose 14. In the filtering state, the other second air avoidance area c rotates to face the second tube groove 231, and the plurality of second extrusion rollers 2322 do not extend into the second tube groove 231 to extrude the filter hose 14.

[0052] Specifically, in the illustrated embodiment, the number of first extrusion rollers 2222 is 5, and the angle between two adjacent first extrusion rollers 2222 on the first roller installation area b and the center of the first rotating disk 223 is 60 degrees. The number of second extrusion rollers 2322 is 4, and the angle between two second extrusion rollers 2322 on the same second roller installation area d and the center of the second rotating disk 233 is 60 degrees. The first angle is that the first rotating disk 223 and the second rotating disk 233 rotate 180 degrees clockwise from the position in the initial state, and the second angle is that the first rotating disk 223 and the second rotating disk 233 rotate 60 degrees clockwise from the position in the initial state. In other embodiments, the number, distribution and rotating angle of the first extrusion rollers 2222 and the second extrusion rollers 2322 can be changed according to design requirements. In this embodiment, a driving member 241 is used to drive the first rotating disk 223 and the second rotating disk 233. It only needs to drive the first rotating disk 223 and the second rotating disk 233 to rotate to a preset angle to make the blood bag exhaust device 20 in four states, thereby reducing the cost of the device.

[0053] In other embodiments (not shown), the driving module 24 includes two driving members 241, and the power output ends of the two driving members 241 are respectively connected to the first turntable 223 and the second turntable 233 to drive the first turntable 223 and the second turntable 233 to rotate. In the initial state, the multiple first extrusion rollers 2222 do not extend into the first tube groove 221 to extrude the bypass hose 18, and the multiple second extrusion rollers 2322 do not extend into the second tube groove 231 to extrude the filter hose 14; in the filtering state, one of the driving members 241 drives at least one first extrusion roller 2222 of the first rotating disk 223 to extend into the first tube groove 221 to continuously squeeze the bypass hose 18 to block blood circulation, and another driving member 241 drives the multiple second extrusion rollers 2322 of the second rotating disk 233 to not extend into the second tube groove 231 to extrude the filter hose 14, and the blood in the filter bag 11 flows to the transfer bag 17 through the filter hose 14 and the filter 15; in the exhaust state, one of the driving members 241 drives the multiple first extrusion rollers 2222 of the first rotating disk 223 to alternately extend into the first tube groove 221 to extrude the bypass hose 18 and exit the first tube groove 221 to release the bypass hose 18, and the other driving member 241 drives the multiple first extrusion rollers 2222 of the first rotating disk 223 to alternately extend into the first tube groove 221 to extrude the bypass hose 18 and exit the first tube groove 221 to release the bypass hose 18. The moving member 241 drives the multiple second squeezing rollers 2322 of the second rotating disk 233 to alternately extend into the second tube groove 231 to squeeze the filter hose 14 and exit the second tube groove 231 to release the filter hose 14, or extend into the second tube groove 231 to continuously squeeze the filter hose 14, so that the air in the transfer bag 17 is discharged back to the bag to be filtered 11 through the bypass hose 18 and the filter hose 14 or only through the bypass hose 18. In addition, continuous peristalsis can make the blood in the transfer bag 17 flow back to the main hose 12 to achieve blood sampling; in the blocking state, one of the driving members 241 drives at least one first squeezing roller 2222 of the first rotating disk 223 to extend into the first tube groove 221 to continuously squeeze the bypass hose 18, and the other driving member 241 drives at least one second squeezing roller 2322 of the second rotating disk 233 to extend into the second tube groove 231 to continuously squeeze the filter hose 14, thereby blocking the blood in the bag to be filtered 11 from flowing to the transfer bag 17 after filtration. The time-consuming, labor-consuming, and inefficient problems caused by manually controlling the stop valve, exhausting, and retaining blood samples are effectively solved. In this embodiment, two driving members 241 are used to drive the first rotating disk 223 and the second rotating disk 233 to rotate respectively. The driving member 241 can be a motor.

[0054] In other embodiments (not shown in the figure), the first peristaltic mechanism 22 includes a first rotating disk 223, a first movable extrusion plate (not shown in the figure) and a plurality of first extrusion rollers 2222. The first movable extrusion plate is arranged on the side of the first rotating disk 223, and the plurality of first extrusion rollers 2222 are equidistantly installed on the first rotating disk 223 along the circumference of the first rotating disk 223 and can be rotatably installed in a circle. The first movable extrusion plate and the plurality of first extrusion rollers 2222 form a first extrusion assembly 222, and the space between the first movable extrusion plate and the plurality of first extrusion rollers 2222 forms a first tube groove 221. The second peristaltic mechanism 23 includes a second rotating disk 233, a second movable extrusion plate (not shown in the figure) and a plurality of second extrusion rollers 2322, the second movable extrusion plate is arranged on the side of the second rotating disk 233, and the plurality of second extrusion rollers 2322 are equidistantly installed on the second rotating disk 233 along the circumference of the second rotating disk 233 and can be rotatably installed in a circle. The second movable extrusion plate and the plurality of second extrusion rollers 2322 form a second extrusion assembly 232, and the space between the second movable extrusion plate and the plurality of second extrusion rollers 2322 forms a second tube groove 231. The driving module 24 includes a first movable extrusion plate driving member (not shown in the figure), a second movable extrusion plate driving member (not shown in the figure) and a turntable driving member (not shown in the figure). The turntable driving member may include two motors to drive the first turntable 223 and the second turntable 233 respectively, or may include only one driving member and a transmission mechanism to work together to drive the first turntable 223 and the second turntable 233 at the same time. The first movable extrusion plate driving member is connected to the first movable extrusion plate to drive the first movable extrusion plate to approach or move away from the first turntable 223, the second movable extrusion plate driving member is connected to the second movable extrusion plate to drive the second movable extrusion plate to approach or move away from the second turntable 233, and the turntable driving member is connected to the first turntable 223 and the second turntable 233 to drive the first turntable 223 and the second turntable 233 to rotate.When the blood bag exhaust device of this embodiment is used, in the initial state, the first movable extrusion plate is away from the first turntable 223 and does not extend into the first tube groove 221 to work together with the multiple first extrusion rollers 2222 to extrude the bypass hose 18, and the second movable extrusion plate is away from the second turntable 233 and does not extend into the second tube groove 231 to work together with the multiple first extrusion rollers 2222 to extrude the filter hose 14; in the filtering state, the first movable extrusion plate is close to the first turntable 223 and extends into the first tube groove 221 to work together with at least one first extrusion roller 2222 to continuously squeeze the bypass hose 18, and the second movable extrusion plate is away from the second turntable 233 and does not extend into the second tube groove 231 to work together with the multiple second extrusion rollers 2322 to extrude the filter hose 14; in the exhaust state The first rotating disk 223 and the second rotating disk 233 rotate continuously, the first movable extrusion plate approaches the first rotating disk 223 and extends into the first tube groove 221, and cooperates with multiple first extrusion rollers 2222 to alternately squeeze and release the bypass hose 18, the second movable extrusion plate approaches the second rotating disk 233 and extends into the second tube groove 231, and cooperates with multiple second extrusion rollers 2322 to alternately squeeze and release the filter hose 14; in the blocking state, the first movable extrusion plate approaches the first rotating disk 223 and extends into the first tube groove 221, and cooperates with at least one first extrusion roller 2222 to squeeze the bypass hose 18 to death, and the second movable extrusion plate approaches the second rotating disk 233 and extends into the second tube groove 231, and cooperates with at least one second extrusion roller 2322 to squeeze the filter hose 14 to death.

[0055] refer to Fig.11 As shown, the mounting seat 21 is also equipped with a first baffle 25, and the number of the first baffles 25 in the figure is two. The first baffle 25 is arranged on the side of the first tube groove 221 away from the first extrusion plate 2221, and the first baffle 25 is equipped with a limiting clamping bead 26 on the side of the first tube groove 221. The mounting seat 21 is also equipped with a second baffle 27, and the second baffle 27 is arranged on the side of the second tube groove 231 away from the second extrusion plate 2321, and the second baffle 27 is equipped with a limiting clamping bead 26 on the side of the second tube groove 231. The limiting clamping bead 26 is used to ensure that the hose in the tube groove will not detach by itself. Since the hose can produce a certain extrusion deformation, it is only necessary to squeeze the hose into the tube groove by extrusion.

[0056] This embodiment also provides a blood filter (not shown in the figure), including a blood bag exhaust device 20 of any of the above embodiments, the number of blood bag exhaust devices 20 is multiple, and the blood filter also includes multiple hooks for bags to be filtered and multiple transfer bag receiving chambers. When using the blood filter, the bag to be filtered 11 is hung on the hook of the bag to be filtered, the transfer bag 17 is placed in the transfer bag receiving chamber, the bypass hose 18 is inserted into the first pipe groove 221 of the blood bag exhaust device 20, and the filter hose 14 is inserted into the second pipe groove 231. Start the blood bag exhaust device 20, and complete the filtering work, exhaust work and blood sample retention work in sequence.

[0057] The above are only preferred embodiments of the utility model, and do not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the utility model concept, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A blood bag exhaust device, characterized in that: The invention comprises a mounting seat, wherein the mounting seat is equipped with a first peristaltic mechanism, wherein the first peristaltic mechanism is provided with a first tube groove and a first extrusion assembly, wherein the first tube groove is used to accommodate an external bypass hose, and the first extrusion assembly can extend into the first tube groove to squeeze the bypass hose and exit the first tube groove to release the bypass hose; The mounting seat is also equipped with a second peristaltic mechanism, the second peristaltic mechanism is provided with a second tube groove and a second extrusion assembly, the second tube groove is used to accommodate an external filter hose, the second extrusion assembly can extend into the second tube groove to squeeze the filter hose and exit the second tube groove to release the filter hose; It also includes a control module and a driving module installed on the mounting seat, the control module is electrically connected to the driving module, the driving module is respectively connected to the first extrusion assembly and the second extrusion assembly, and the driving module is used to drive the first extrusion assembly to extrude / release the bypass hose and drive the second extrusion assembly to extrude / release the filter hose.

2. The blood bag exhaust device according to claim 1, characterized in that: The mounting seat includes an outer shell and an internal mounting plate, the first peristaltic mechanism and the second peristaltic mechanism are fixedly mounted on the mounting plate, the outer shell is provided with a first opening corresponding to the position of the first tube groove and a second opening corresponding to the position of the second tube groove, the bypass hose is placed into the first tube groove from the first opening, and the filter hose is placed into the second tube groove from the second opening.

3. The blood bag exhaust device according to claim 1, characterized in that: The control module is used to control the driving module so that the first peristaltic mechanism and the second peristaltic mechanism are in four states: In an initial state, the first extrusion assembly does not extrude the bypass hose, and the second extrusion assembly does not extrude the filter hose; In the filtering state, the first squeezing component continuously squeezes the bypass hose to block blood circulation, and the second squeezing component does not squeeze the filtering hose; In the exhaust state, the first extrusion component alternately squeezes and releases the bypass hose, and the second extrusion component alternately squeezes and releases the filter hose or continuously squeezes the filter hose to block blood circulation; In the blocking state, the first squeezing component continuously squeezes the bypass hose to block blood circulation, and the second squeezing component continuously squeezes the filter hose to block blood circulation.

4. The blood bag exhaust device according to any one of claims 1 to 3, characterized in that: The first peristaltic mechanism comprises a first rotating disk, a first extrusion plate and a plurality of first extrusion rollers, wherein the first extrusion plate is arranged at the edge of the first rotating disk, and the plurality of first extrusion rollers are circumferentially spaced and rotatably installed on the first rotating disk, the first extrusion plate and the plurality of first extrusion rollers constitute the first extrusion assembly, and the space between the first extrusion plate and the plurality of first extrusion rollers forms the first tube groove; The driving module is drivingly connected to the first rotating disk to drive the first rotating disk to rotate. Driven by the rotating disk, the plurality of first squeezing rollers can be alternately extended into the first tube groove to press against the first squeezing plate to squeeze the bypass hose and withdraw from the first tube groove to release the bypass hose. The second peristaltic mechanism includes a second turntable, a second extrusion plate and a plurality of second extrusion rollers, the second extrusion plate is arranged at the edge of the second turntable, the plurality of second extrusion rollers are circumferentially spaced and rotatably installed on the second turntable, the second extrusion plate and the plurality of second extrusion rollers constitute the second extrusion assembly, and the space between the second extrusion plate and the plurality of second extrusion rollers forms the second tube groove; the driving module is connected to the second turntable to drive the second turntable to rotate, and the plurality of second extrusion rollers can be driven by the turntable to extend into the second tube groove in turn to press against the second extrusion plate to squeeze the filter hose and exit the second tube groove to release the filter hose.

5. The blood bag exhaust device according to claim 4, characterized in that: The surface of the first extrusion plate facing the first tube groove is provided with a first arcuate surface, which abuts against the edge of the first turntable portion; the surface of the second extrusion plate facing the second tube groove is provided with a second arcuate surface, which abuts against the edge of the second turntable portion.

6. The blood bag exhaust device according to claim 4, characterized in that: The driving module includes a driving member and a transmission mechanism, the transmission mechanism includes a driving gear and two passive gears, the power output end of the driving member is connected to the driving gear to drive the driving gear to rotate, the first turntable and the second turntable are respectively installed on the two passive gears, and the two passive gears are respectively meshed with the driving gear.

7. The blood bag exhaust device according to claim 6, characterized in that: In the initial state, none of the multiple first extrusion rollers extend into the first tube groove to extrude the bypass hose, and none of the multiple second extrusion rollers extend into the second tube groove to extrude the filter hose; in the filtering state, the driving member drives the first turntable and the second turntable to rotate by a first angle from the position in the initial state, at least one of the first extrusion rollers extends into the first tube groove to continuously squeeze the bypass hose, and none of the multiple second extrusion rollers extends into the second tube groove to squeeze the filter hose; in the exhaust state, the driving member drives the first turntable and the second turntable to rotate continuously, and multiple first extrusion rollers alternately extend into the first tube groove to squeeze the bypass hose and exit the first tube groove to release the bypass hose, and multiple second extrusion rollers alternately extend into the second tube groove to squeeze the filter hose and exit the second tube groove to release the filter hose; in the blocking state, the driving member drives the first turntable and the second turntable to rotate by a second angle from the position in the initial state, and at least one of the first extrusion rollers extends into the first tube groove to continuously squeeze the bypass hose, and at least one of the second extrusion rollers extends into the second tube groove to continuously squeeze the filter hose.

8. The blood bag exhaust device according to claim 7, characterized in that: The first rotating disk is divided into a sector-shaped first air-avoiding area and a first roller installation area, a plurality of the first extrusion rollers are installed in the first roller installation area at equal intervals, the first air-avoiding area is not installed with the first extrusion roller, and in an initial state, the first air-avoiding area rotates to face the first tube groove; The second turntable is divided into two sector-shaped, oppositely arranged second air avoidance areas and two sector-shaped, oppositely arranged second roller installation areas. A plurality of second extrusion rollers are installed at equal intervals in the two second roller installation areas. No second extrusion rollers are installed in the two second air avoidance areas. In an initial state, one of the second air avoidance areas rotates to face the second tube slot. In a filtering state, the other second air avoidance area rotates to face the second tube slot.

9. The blood bag exhaust device according to claim 8, characterized in that: The number of the first extrusion rollers is 5, and the angle between two adjacent first extrusion rollers on the first roller installation area and the center of the first rotating disk as the center is 60 degrees; the number of the second extrusion rollers is 4, and the angle between two adjacent second extrusion rollers on the same second roller installation area and the center of the second rotating disk as the center is 60 degrees; The first angle is when the first turntable and the second turntable rotate 180° clockwise from their initial positions, and the second angle is when the first turntable and the second turntable rotate 60° clockwise from their initial positions.

10. The blood bag exhaust device according to claim 4, characterized in that: The driving module comprises two driving members, and the power output ends of the two driving members are respectively connected to the first rotating disk and the second rotating disk one by one to respectively drive the first rotating disk and the second rotating disk to rotate; In the initial state, none of the multiple first extrusion rollers extend into the first tube groove to squeeze the bypass hose, and none of the multiple second extrusion rollers extend into the second tube groove to squeeze the filter hose; in the filtering state, at least one of the first extrusion rollers extends into the first tube groove to continuously squeeze the bypass hose, and none of the multiple second extrusion rollers extend into the second tube groove to squeeze the filter hose; in the exhaust state, multiple first extrusion rollers alternately extend into the first tube groove to squeeze the bypass hose and exit the first tube groove to release the bypass hose, and multiple second extrusion rollers alternately extend into the second tube groove to squeeze the filter hose and exit the second tube groove to release the filter hose or extend into the second tube groove to continuously squeeze the filter hose; in the blocking state, at least one of the first extrusion rollers extends into the first tube groove to continuously squeeze the bypass hose, and at least one of the second extrusion rollers extends into the second tube groove to continuously squeeze the filter hose.

11. The blood bag exhaust device according to any one of claims 1 to 3, characterized in that: The first peristaltic mechanism comprises a first rotating disk, a first movable extrusion plate and a plurality of first extrusion rollers, wherein the first movable extrusion plate is arranged on the side of the first rotating disk, and the plurality of first extrusion rollers are equidistantly spaced and rotatably installed on the first rotating disk along the circumference of the first rotating disk, the first movable extrusion plate and the plurality of first extrusion rollers constitute the first extrusion assembly, and the space between the first movable extrusion plate and the plurality of first extrusion rollers forms the first tube groove; The second peristaltic mechanism comprises a second rotating disk, a second movable extrusion plate and a plurality of second extrusion rollers, wherein the second movable extrusion plate is arranged on the side of the second rotating disk, and the plurality of second extrusion rollers are equidistantly spaced and rotatably installed on the second rotating disk along the circumference of the second rotating disk, the second movable extrusion plate and the plurality of second extrusion rollers constitute the second extrusion assembly, and the space between the second movable extrusion plate and the plurality of second extrusion rollers forms the second tube groove; The driving module comprises a first movable extrusion plate driving member, a second movable extrusion plate driving member and a turntable driving member, wherein the first movable extrusion plate driving member is drivingly connected to the first movable extrusion plate to drive the first movable extrusion plate to approach or move away from the first turntable, the second movable extrusion plate driving member is drivingly connected to the second movable extrusion plate to drive the second movable extrusion plate to approach or move away from the second turntable, and the turntable driving member is drivingly connected to the first turntable and the second turntable respectively to drive the first turntable and the second turntable to rotate; In an initial state, the first movable extrusion plate is away from the first rotating disk and does not extend into the first tube groove to cooperate with the plurality of first extrusion rollers to extrude the bypass hose, and the second movable extrusion plate is away from the second rotating disk and does not extend into the second tube groove to cooperate with the plurality of first extrusion rollers to extrude the filter hose; In the filtering state, the first movable squeezing plate is close to the first rotating disk and extends into the first tube groove to cooperate with at least one of the first squeezing rollers to continuously squeeze the bypass hose, and the second movable squeezing plate is far away from the second rotating disk and does not extend into the second tube groove to cooperate with multiple second squeezing rollers to squeeze the filter hose; in the exhaust state, the first rotating disk and the second rotating disk continuously rotate on their own, the first movable squeezing plate is close to the first rotating disk and extends into the first tube groove to cooperate with multiple first squeezing rollers to alternately squeeze and release the bypass hose, and the second movable squeezing plate is close to the second rotating disk and extends into the second tube groove to cooperate with multiple second squeezing rollers to alternately squeeze and release the filter hose; In the blocking state, the first movable extrusion plate is close to the first turntable and extends into the first tube groove to work together with at least one of the first extrusion rollers to squeeze the bypass hose, and the second movable extrusion plate is close to the second turntable and extends into the second tube groove to work together with at least one of the second extrusion rollers to squeeze the filter hose.

12. The blood bag exhaust device according to claim 6 or 10, characterized in that: The driving component is a motor, and the control module includes a single chip microcomputer or a DSP or an ARM or a PLC or an FPGA.

13. The blood bag exhaust device according to claim 4, characterized in that: The mounting seat is further provided with a first baffle, the first baffle being arranged on a side of the first tube slot away from the first extrusion plate, and a limiting clamping bead being arranged on the side of the first baffle plate facing the first tube slot; and / or The mounting seat is also provided with a second baffle, which is arranged on a side of the second tube slot away from the second extrusion plate, and a limiting clamping bead is installed on the side of the second baffle facing the second tube slot.

14. A blood filter, characterized in that: It comprises the blood bag exhaust device according to any one of claims 1 to 13, wherein the number of the blood bag exhaust devices is multiple, and the blood filter further comprises multiple hooks for bags to be filtered and multiple transfer bag receiving chambers.

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