CN107723230B

CN107723230B - Plastic blood bag detection device

Info

Publication number: CN107723230B
Application number: CN201711012518.7A
Authority: CN
Inventors: 国宪虎; 袁晓晶; 栾同青; 郝建新; 师广波
Original assignee: Shandong Quality Inspection Center for Medical Devices
Current assignee: Shandong Quality Inspection Center for Medical Devices
Priority date: 2017-10-26
Filing date: 2017-10-26
Publication date: 2023-09-29
Anticipated expiration: 2037-10-26
Also published as: CN107723230A

Abstract

The plastic blood bag detection device comprises a bacteria liquid tank, an alcohol tank, a sterile water tank, an experiment cabin and a waste liquid tank, wherein a fixed net is arranged in the experiment cabin. The invention has the advantages that: the invention can be used for determining whether the plastic blood bag meets the standard or not by placing the plastic blood bag with the built-in culture medium in the bacterial liquid and sequentially adopting alcohol, sterile water and gas to clean and dry the plastic blood bag, and detecting the bacterial count in the culture medium in the plastic blood bag after the cleaning is finished.

Description

Plastic blood bag detection device

Technical Field

The invention relates to a detection device, in particular to a plastic blood bag detection device.

Background

The design and manufacture of the plastic blood bag provide convenience for collection, storage, treatment, transfer and separation of whole blood and blood components, and have great potential safety hazards, and especially the pollution of the liquid in the plastic blood bag by microorganisms is most common. The plastic blood bag should have stable biological, chemical and physical properties for the contents and prevent the invasion of microorganisms during the shelf life. Therefore, the method does not penetrate microorganisms as an important technical index of the plastic blood bag, has great significance in detection, can reduce the risk of microbial contamination of the liquid in the plastic blood bag, and effectively controls the occurrence of clinical adverse reaction events. Meanwhile, GB14232.1 and ISO 3826-1 bag-type plastic Container for human blood and blood component-first part: the traditional plastic blood bags clearly define that the plastic blood bags which must pass the microorganism non-passing test can be put into use. At present, no plastic blood bag detection device capable of accurately detecting invasion conditions of microorganisms to plastic blood bags so as to conveniently screen plastic blood bags with different qualities exists.

Disclosure of Invention

In order to solve the problems, the invention aims to overcome the defects of the prior art and provide a plastic blood bag detection device which can accurately detect the invasion condition of microorganisms to plastic blood bags so as to conveniently screen the plastic blood bags with different qualities.

The invention aims to achieve the aim, and the aim is achieved by the following technical scheme: the utility model provides a plastics blood bag detection device, including the fungus liquid jar, the alcohol jar, aseptic water tank, experimental cabin and waste liquid jar, set up the fixed network in the experimental cabin, experimental cabin is connected with the one end of first fixed pipe respectively, second fixed pipe and third fixed pipe, an interface of first five-way is connected to the other end of first fixed pipe, three first connecting pipe and a gas pipeline are connected respectively to four other interfaces of first five-way, three first connecting pipe are connected with the exit linkage of fungus liquid jar respectively, alcohol jar and aseptic water tank, the second connecting pipe is connected respectively to the entry of fungus liquid jar, alcohol jar and aseptic water tank, three second connecting pipe respectively with three interface connection of second five-way, the other two interfaces of second five-way are connected third connecting pipe and another gas pipeline respectively, the third connecting pipe is connected with the positive pressure air supply, the other end of second fixed pipe and third fixed pipe is connected with the waste liquid jar respectively, install first valve on the three first connecting pipe respectively, install the second valve on the third fixed pipe respectively, install the fourth valve on the gas pipeline.

In order to further achieve the purpose of the invention, the following technical scheme can be adopted: the gas pipeline is provided with a gas tank, the control valve consists of an electromagnetic valve and a check valve, the electromagnetic valve is arranged on the gas pipeline at the inlet end of the gas tank, and the check valve is arranged on the gas pipeline at the outlet end of the gas tank. The second fixed pipe and the third fixed pipe are connected with the experiment cabin through the pagoda head. The second valve is an electromagnetic valve, and the first valve is a one-way valve. The utility model discloses a fungus fluid reservoir, alcohol jar, aseptic water pitcher, gas pitcher, experimental cabin and waste liquid jar all set up in the casing, shells inner wall lower part sets up annular boss, places the mounting panel on the boss, the mounting panel top surface sets up the several mounting groove, fungus fluid reservoir, alcohol jar, aseptic water pitcher, gas pitcher, experimental cabin and waste liquid jar all are located corresponding mounting groove. The upper part of the shell is provided with a cross beam, a plurality of wire reels are arranged on the cross beam, a rotating motor is arranged on the shaft of each wire reel, one end of a first connecting rope is arranged on each wire reel, one end of a second connecting rope is arranged on each mounting plate, connecting sleeves are arranged between the first connecting ropes and the second connecting ropes and are connected with each other through the connecting sleeves, hoops are matched with the lower end parts of the first connecting ropes, the connecting sleeves are provided with first grooves along the length direction, the first grooves are matched with the width of the first connecting ropes, the connecting sleeves are respectively provided with second grooves, fixing grooves and containing grooves, the first grooves are communicated with the second grooves, the second grooves are matched with the width of the hoops, the fixing grooves are communicated with the containing grooves, fan-shaped limiting plates are arranged in the fixing grooves, the inner cambered surfaces of the limiting plates are matched with the outer surfaces of the hoops, the inner cambered surfaces of the limiting plates are provided with limiting grooves, the limiting groove is matched with the end part of the connecting end of the clamp, a gear ring is arranged on the outer cambered surface of the limiting plate, a first gear, an electric shifting fork and a fixing plate are arranged in the accommodating groove, the gear ring is meshed with the first gear all the time, the first gear is arranged on a first gear shaft, a key is arranged on the fixing plate, the electric shifting fork can shift the first gear shaft to match with the key, a remote module is arranged on the electric shifting fork, at least two fixing rods are arranged in the fixing groove, an arc-shaped sliding groove is arranged on the limiting plate, the fixing rods are positioned in the sliding groove, the limiting plate can rotate in the fixing groove along the fixing rod through the sliding groove, a connecting hole and the connecting groove are arranged in the connecting sleeve, the connecting hole is communicated with the connecting groove, a second gear shaft is arranged in the connecting groove, the second gear shaft is linked with the first gear shaft through a transmission device, two sides of the second gear are respectively meshed with the first gear and the second gear, the first rack lower extreme passes through first horizontal pole connection several first holding strip, and the second rack upper end passes through the second horizontal pole and connects several second holding strip, and several first holding strip and several second holding strip all are located the connecting hole, and the upper end of second connecting rope is located between several first holding strip and the several second holding strip. And a torsion spring is arranged on the second gear shaft. The first clamping strips and the second clamping strips are staggered.

The invention has the advantages that: the invention can be used for determining whether the plastic blood bag meets the standard or not by placing the plastic blood bag with the built-in culture medium in the bacterial liquid and sequentially adopting alcohol, sterile water and gas to clean and dry the plastic blood bag, and detecting the bacterial count in the culture medium in the plastic blood bag after the cleaning is finished.

Drawings

FIG. 1 is a schematic diagram of a plastic blood bag detection device according to the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; FIG. 3 is an enlarged sectional view taken along line B-B of FIG. 1; FIG. 4 is an enlarged view of section I of FIG. 1; FIG. 5 is an enlarged view of FIG. 4 from the direction C; FIG. 6 is another state diagram of FIG. 5; FIG. 7 is an enlarged cross-sectional view taken along line D-D of FIG. 4; FIG. 8 is a cross-sectional view taken along line E-E of FIG. 7; fig. 9 is a flow chart of the present invention.

Detailed Description

The plastic blood bag detection device comprises a bacteria liquid tank 32, an alcohol tank 33, a sterile water tank 34, an experiment cabin 39 and a waste liquid tank 43, wherein a fixed net 44 is arranged in the experiment cabin 39, the experiment cabin 39 is respectively connected with one ends of a first fixed pipe 38, a second fixed pipe 41 and a third fixed pipe 42, the other end of the first fixed pipe 38 is connected with one interface of a first five-way pipe 54, the other four interfaces of the first five-way pipe 54 are respectively connected with three first connecting pipes 45 and one gas pipeline 55, the three first connecting pipes 45 are respectively connected with outlets of the bacteria liquid tank 32, the alcohol tank 33 and the sterile water tank 34, inlets of the bacteria liquid tank 32, the alcohol tank 33 and the sterile water tank 34 are respectively connected with a second connecting pipe 3, the three second connecting pipes 3 are respectively connected with three interfaces of a second five-way pipe 30, the other two interfaces of the second five-way pipe 30 are respectively connected with a third connecting pipe 4 and the other gas pipeline 55, the other ends of the second fixed pipe 41 and the third fixed pipe 42 are respectively connected with the waste liquid tank 43, a third valve 36 is respectively arranged on the three first connecting pipes 45, a third valve 31 is respectively arranged on the third connecting pipe 45, a third valve 42 is respectively arranged on the third valve 42, and a fourth valve is respectively arranged on the third valve 42. The second fixed pipe 41 is respectively communicated with the experiment cabin 39 and the waste liquid tank 43, the waste liquid tank 43 is provided with an air outlet and a liquid outlet, the air outlet and a third valve 46 on the second fixed pipe 41 can balance the air pressure in each tank, and the liquid outlet can recycle various liquids.

The device is characterized in that a plastic blood bag filled with a culture medium is placed in an experiment cabin 39, bacteria liquid, alcohol and sterile water are sequentially adopted to soak or clean the plastic blood bag, and finally, after air drying, the number of bacteria invading the plastic blood bag can be detected to determine whether the plastic blood bag meets the standards. The device has the advantages of simple structure, recoverable alcohol, sterile water and gas, low test cost, fewer test steps, and convenient measurement result acquisition and confirmation.

The upper part of the experiment cabin 39 is provided with a cabin cover, so that the plastic blood bag can be conveniently put in and taken out. The retaining mesh 44 may also be a stand to provide support for the plastic blood bag while minimizing contact with the plastic blood bag and maximizing contact of the plastic blood bag with the liquid and gas injected into the test chamber.

The gas pipe 55 is provided with a gas tank 35, the control valve is composed of an electromagnetic valve and a check valve, the electromagnetic valve is arranged on the gas pipe 55 at the inlet end of the gas tank 35, and the check valve is arranged on the gas pipe 55 at the outlet end of the gas tank 35. The air tank 35 can stabilize the air pressure so that the positive pressure air source can continuously and stably flush the test chamber 39.

The second fixing tube 41 and the third fixing tube 42 are connected with the experiment cabin 39 through the pagoda head 40. The pagoda head 40 can ensure the tight connection of the second fixing tube 41 and the third fixing tube 42 with the experiment cabin 39, avoiding leakage.

The second valve 31 is an electromagnetic valve, and the first valve 36 is a one-way valve. This structure is convenient to control and avoids backflow.

Before testing, the plastic blood bag is filled with culture medium in advance, and the plastic blood bag is placed on a fixed net 44 in the experiment cabin 39 to be covered.

The test steps are as follows:

s1: the third valve 46 on the second fixed pipe 41 and the air outlet on the waste liquid tank 43 are opened so as to keep the air pressure balance in each tank body, the second valve 31 on the second connecting pipe 3 between the positive pressure air source and the bacteria liquid tank 32 is opened, the first valve 36 on the first connecting pipe 45 between the bacteria liquid tank 32 and the experiment cabin 39 is opened, the bacteria liquid in the bacteria liquid tank 32 is extruded into the experiment cabin 39 through the positive pressure air source, the bacteria liquid fully wraps and soaks the plastic blood bag, the bacteria liquid fully contacts the surface of the plastic blood bag, the second valve 31 is closed after the bacteria liquid is full, after a period of time, the electromagnetic valve between the positive pressure air source and the air tank 35 is opened, the fourth valve 47 on the third fixed pipe 42 between the experiment cabin 39 and the waste liquid tank 43 is opened, the third valve 46 is closed, the bacteria liquid in the experiment cabin 39 is discharged into the waste liquid tank 43 through the third fixed pipe 42, the electromagnetic valve 47 between the positive pressure air source and the air tank 35 is closed after the experiment cabin 39 is emptied, and the third valve 46 is opened.

S2: the second valve 31 on the second connecting pipe 3 between the positive pressure air source and the alcohol tank 33 is opened, the first valve 36 on the first connecting pipe 45 between the alcohol tank 33 and the experiment cabin 39 is opened, alcohol in the alcohol tank 33 is extruded into the experiment cabin 39 from the positive pressure air source, residual bacterial liquid on the plastic blood bag is soaked by the alcohol, after soaking, the fourth valve 47 on the third fixing pipe 42 between the experiment cabin 39 and the waste liquid tank 43 is opened, the third valve 46 is closed, the alcohol is discharged to the waste liquid tank 43, the electromagnetic valve between the positive pressure air source and the air tank 35 is opened, the residual liquid on the plastic blood bag is flushed by the positive pressure air source, after flushing, the control valve on the air pipeline 55 and the fourth valve 47 on the third fixing pipe 42 are closed, and the third valve 46 is opened.

S3: opening a second valve 31 on a second connecting pipe 3 between the positive pressure air source and the sterile water tank 34, opening a first valve 36 on a first connecting pipe 45 between the sterile water tank 34 and the experiment compartment 39, extruding sterile water in the sterile water tank 34 into the experiment compartment 39 through the positive pressure air source, flushing residual liquid on the plastic blood bag through the sterile water, opening a fourth valve 47 on a third fixing pipe 42 between the experiment compartment 39 and the waste liquid tank 43 after flushing, and closing the third valve 46Closed, the sterile water is discharged to a waste liquid tank 43,the electromagnetic valve between the positive pressure air source and the air tank 35 is opened, and the plastic blood in the experiment cabin 39 is subjected to air passing The bag is washed to achieve the effect of cleaning the appearance of the plastic blood bag.After the cleaning is completed, the control valve on the gas pipe 55 and the fourth valve 47 on the third fixed pipe 42 are closed.

S4: the electromagnetic valve between the positive pressure air source and the air tank 35 is opened, the outer surface of the plastic blood bag is air-dried through air, the liquid on the outer surface of the plastic blood bag is removed, the plastic blood bag is placed into a temperature and humidity environment suitable for fungus growth, fungus conditions in the plastic blood bag are observed after a period of time, and whether the plastic blood bag is qualified is determined.

The bacterial liquid jar 32, the alcohol jar 33, the aseptic water jar 34, the gas jar 35, the experiment cabin 39 and the waste liquid jar 43 all set up in casing 1, casing 1 inner wall lower part sets up annular boss 53, places mounting panel 2 on the boss 53, the mounting panel 2 top surface sets up several mounting groove 37, bacterial liquid jar 32, alcohol jar 33, aseptic water jar 34, gas jar 35, experiment cabin 39 and waste liquid jar 43 all are located corresponding mounting groove 37. This structure places each jar body in casing 1 through mounting panel 2, convenient transport and removal.

In order to avoid the damage of various tank bodies caused by shaking vibration and the like generated by the shell 1 when the shell 1 is carried and moved, the upper part of the shell 1 is provided with a cross beam 52, a plurality of wire reels 49 are arranged on the cross beam 52, a rotating motor 48 is arranged on the shaft of the wire reels 49, one end of a first connecting rope 50 is arranged on the wire reels 49, one end of a second connecting rope 51 is arranged on the mounting plate 2, connecting sleeves 5 are arranged between the first connecting rope 50 and the second connecting rope 51 and are mutually connected through the connecting sleeves 5, the lower end parts of the first connecting ropes 50 are matched with one another, the connecting sleeves 5 are provided with first grooves 13 along the length direction, the first grooves 13 are matched with the widths of the first connecting ropes 50, the connecting sleeves 5 are respectively provided with second grooves 14, fixing grooves 15 and containing grooves 18, the first grooves 13 are communicated with the second grooves 14, the second grooves 14 are matched with the widths of the clamping sleeves 12, the second grooves 14 are communicated with the fixing grooves 15, the fixed slot 15 is communicated with the accommodating slot 18, a fan-shaped limiting plate 16 is arranged in the fixed slot 15, the inner cambered surface of the limiting plate 16 is matched with the outer surface of the clamp 12, a limiting slot 17 is arranged on the inner cambered surface of the limiting plate 16, the limiting slot 17 is matched with the end part of the connecting end of the clamp 12, a gear ring is arranged on the outer cambered surface of the limiting plate 16, a first gear 19, an electric shifting fork 24 and a fixed plate 25 are arranged in the accommodating slot 18, the gear ring is always meshed with the first gear 19, the first gear 19 is arranged on a first gear shaft 23, a key 26 is arranged on the fixed plate 25, the electric shifting fork 24 can shift the first gear shaft 23 to be matched with the key 26, a remote module is arranged on the electric shifting fork 24, at least two fixed rods 21 are arranged in the fixed slot 15, an arc-shaped chute 22 is arranged on the limiting plate 16, the fixed rods 21 are positioned in the chute 22, the limiting plate 16 can rotate in the fixed slot 15 along the fixed rods 21 through the chute 22, the connecting sleeve 5 is internally provided with a connecting hole 6 and a connecting groove 7, the connecting hole 6 is communicated with the connecting groove 7, the connecting groove 7 is internally provided with a second gear shaft 9, the second gear shaft 9 is linked with the first gear shaft 23 through a transmission device, the second gear shaft 9 is provided with a second gear 8, two sides of the second gear 8 are respectively meshed with a first rack 10 and a second rack 11, the lower end of the first rack 10 is connected with a plurality of first holding strips 27 through a first cross rod, the upper end of the second rack 11 is connected with a plurality of second holding strips 28 through a second cross rod, the plurality of first holding strips 27 and the plurality of second holding strips 28 are all positioned in the connecting hole 6, and the upper end of the second connecting rope 51 is positioned between the plurality of first holding strips 27 and the plurality of second holding strips 28. The dimensions of the mounting plate 2 are the same as the dimensions of the inner wall of the housing 1. This kind of structure can use adapter sleeve 5 to connect two connection ropes when carrying the removal casing, and it rotates to move the rotation motor 48 drive wire reel 49 again to hoist each jar body above with mounting panel 2 intercommunication, casing 1 is carrying the removal in-process, and the vibrations or the power of rocking that produce have the connection rope to absorb, thereby lighten the power that each jar body received, avoid impaired when each jar body carries. When the first connecting rope 50 is connected with the connecting sleeve 5, the clamp 12 is folded, the clamp 12 is fixed at the lower end of the first connecting rope 50, the clamp 12 and the first connecting rope 50 are respectively pushed into the second groove 14 and the first groove 13, after the clamp 12 enters the second groove 14, the connecting end part of the clamp enters the limiting groove 17 on the limiting plate 16, the connecting sleeve 5 or the first connecting rope 50 is rotated, the limiting plate 16 is rotated to the other side, thereby driving the first gear 19 to rotate, after the rotation is completed, the electric shifting fork 24 is controlled, the first gear shaft 23 is shifted to be matched with the key 26, so that the first gear shaft 23 cannot move circumferentially, the limiting plate 16 cannot rotate back to the original position, and the first connecting rope 50 can only move along the first groove 13, and the clamp 12 cannot move along the second groove 14 due to the fact that the connecting end part of the clamp 12 is blocked by the limiting groove 17 on the limiting plate 16, so that the connecting sleeve 5 fixes the first connecting rope 50 and the clamp 12, and the connecting sleeve 5 are connected with the first connecting rope 50. Before the connecting sleeve 5 is connected with the upper end of the second connecting rope 51, the upper end of the second connecting rope 51 is placed between the plurality of first clamping strips 27 and the plurality of second clamping strips 28, after the lower end of the first connecting rope 50 is connected with the connecting sleeve 5, the first gear shaft 23 can rotate, the second gear shaft 9 is driven to rotate by the first gear shaft 23, the plurality of first clamping strips 27 and the plurality of second clamping strips 28 move oppositely to clamp the upper end of the second connecting rope 51, and after the upper end of the second connecting rope 51 is clamped, the electric shifting fork 24 in the connecting sleeve 5 shifts the first gear shaft 23 to be matched with the key 26, so that the first gear shaft 23 cannot move circumferentially, namely the second gear shaft 9 cannot rotate, and the lower end of the first connecting rope 50 is fixed. When the connecting sleeve 5 is separated from the connecting sleeve 50, the second connecting rope 51 can prop the first clamping strip 27 and the second clamping strip 28 open, the first clamping strip 27 and the second clamping strip 28 are mutually far away to enable the second gear shaft 9 to rotate, the first gear shaft 23 is driven to rotate, the limiting plate 16 is reset, and the connecting sleeve 5 is separated from the first connecting rope 50. This structure realizes the interlocking locking of the first connecting rope 50 and the second connecting rope 51, and is convenient for storage and connection. The connection mode is convenient to connect and disconnect, and other objects can not disconnect the ropes from each other due to the fact that the exposed switch and the protrusion are not arranged during connection, and the connection mode is convenient for disconnecting each connecting rope during storage, is convenient for separate storage and is convenient for storage and arrangement. The transmission device can be in various structures such as gear transmission, gear chain transmission, worm and gear transmission and the like.

The second gear shaft 9 is provided with a torsion spring 29. This structure enables the torsion spring 29 to reverse the second gear shaft 9 when locked by the force stored in the torsion spring 29 and to automatically disengage both the first connection rope 50 and the second connection rope 51 when unlocked.

The first plurality of holding strips 27 and the second plurality of holding strips 28 are staggered with each other. This structure makes it possible to fix the second connecting rope 51 firmly by the plurality of first holding strips 27 and the plurality of second holding strips 28, avoiding the second connecting rope 51 from being separated from the connecting sleeve 5.

The technical scheme of the invention is not limited to the scope of the embodiments of the invention. The technical content that is not described in detail in the invention is known in the prior art.

Claims

1. Plastic blood bag detection device, its characterized in that: comprises a bacterial liquid tank (32), an alcohol tank (33), a sterile water tank (34), an experiment cabin (39) and a waste liquid tank (43), wherein a fixed net (44) is arranged in the experiment cabin (39), the experiment cabin (39) is respectively connected with one ends of a first fixed pipe (38), a second fixed pipe (41) and a third fixed pipe (42), the other end of the first fixed pipe (38) is connected with one interface of a first five-way (54), the other four interfaces of the first five-way (54) are respectively connected with three first connecting pipes (45) and one gas pipeline (55), the three first connecting pipes (45) are respectively connected with the outlet of the bacterial liquid tank (32), the alcohol tank (33) and the sterile water tank (34), the inlets of the bacterial liquid tank (32), the alcohol tank (33) and the sterile water tank (34) are respectively connected with a second connecting pipe (3), the three second connecting pipes (3) are respectively connected with the three interfaces of a second five-way (30), the other two interfaces of the second five-way (30) are respectively connected with a third connecting pipe (4) and another gas pipeline (55), the other two interfaces of the second five-way (30) are respectively connected with the third connecting pipe (4) and the other end of the third connecting pipe (30) and the third connecting pipe (30) which are respectively connected with the inlet of the third connecting pipe (33) and the inlet of the sterile water tank (34), the three second connecting pipes (3) are respectively provided with a second valve (31), the second fixed pipe (41) is provided with a third valve (46), the third fixed pipe (42) is provided with a fourth valve (47), and the gas pipeline (55) is provided with a control valve; the gas pipeline (55) is provided with a gas tank (35), the control valve consists of an electromagnetic valve and a one-way valve, the electromagnetic valve is arranged on the gas pipeline (55) at the inlet end of the gas tank (35), and the one-way valve is arranged on the gas pipeline (55) at the outlet end of the gas tank (35); the second fixed pipe (41) and the third fixed pipe (42) are connected with the experiment cabin (39) through the pagoda head (40).

2. The plastic blood bag testing device of claim 1, wherein: the second valve (31) is an electromagnetic valve, and the first valve (36) is a one-way valve.

3. The plastic blood bag testing device of claim 1, wherein: the utility model provides a strain liquid jar (32), alcohol jar (33), aseptic water jar (34), gas pitcher (35), experiment cabin (39) and waste liquid jar (43) all set up in casing (1), casing (1) inner wall lower part sets up annular boss (53), places mounting panel (2) on boss (53), several mounting groove (37) are seted up to mounting panel (2) top surface, strain liquid jar (32), alcohol jar (33), aseptic water pitcher (34), gas pitcher (35), experiment cabin (39) and waste liquid jar (43) all are located corresponding mounting groove (37).

4. A plastic blood bag testing device according to claim 3, wherein: the upper part of the shell (1) is provided with a cross beam (52), the cross beam (52) is provided with a plurality of wire reels (49), the shaft of each wire reel (49) is provided with a rotating motor (48), one end of each first connecting rope (50) is arranged on each wire reel (49), each mounting plate (2) is provided with one end of each second connecting rope (51), connecting sleeves (5) are arranged between each first connecting rope (50) and each second connecting rope (51) and are mutually connected through the connecting sleeve (5), the lower end parts of the first connecting ropes (50) are matched with one another to form a clamp (12), the connecting sleeve (5) is provided with a first groove (13) along the length direction, the first groove (13) is matched with the width of each first connecting rope (50), the connecting sleeve (5) is provided with a second groove (14), a fixed groove (15) and a holding groove (18) are respectively formed in the connecting sleeve (5), the second groove (14) is matched with the width of each clamp (12), the second groove (14) is communicated with the fixed groove (15), the fixed groove (15) is communicated with the fixed groove (16), the inner side of the limiting plate (16) is provided with the limiting plate (16), the limiting plate (16) is arranged on the inner side of the limiting plate (16), the limiting groove (17) is matched with the end part of the connecting end of the clamp (12), a gear ring is arranged on the outer cambered surface of the limiting plate (16), a first gear (19), an electric shifting fork (24) and a fixing plate (25) are arranged in the accommodating groove (18), the gear ring is always meshed with the first gear (19), the first gear (19) is arranged on a first gear shaft (23), a key (26) is arranged on the fixing plate (25), the electric shifting fork (24) can shift the first gear shaft (23) to be matched with the key (26), a remote module is arranged on the electric shifting fork (24), at least two fixing rods (21) are arranged in the fixing groove (15), an arc-shaped sliding groove (22) is formed in the limiting plate (16), the fixing rods (21) are arranged in the sliding groove (22), the limiting plate (16) can rotate in the fixing groove (15) along the sliding groove (22), a connecting hole (6) and a connecting groove (7) are formed in the connecting sleeve (5), the connecting hole (6) is communicated with the connecting groove (7), a second gear shaft (9) is arranged in the connecting groove (7), a second gear shaft (9) is arranged on the connecting groove (7), and is in linkage with the second gear (9) through the second gear (8), the both sides of second gear (8) mesh first rack (10) and second rack (11) respectively, and first rack (10) lower extreme passes through first horizontal pole and connects several first holding strip (27), and several second holding strip (28) are connected through the second horizontal pole to second rack (11) upper end, and several first holding strip (27) and several second holding strip (28) all are located connecting hole (6), and the upper end of second connecting rope (51) is located between several first holding strip (27) and several second holding strip (28).

5. The plastic blood bag testing device of claim 4, wherein: and a torsion spring (29) is arranged on the second gear shaft (9).

6. The plastic blood bag testing device of claim 4, wherein: the first clamping strips (27) and the second clamping strips (28) are staggered.