Disposable autoblood recoverer

Abstract

The disposable autoblood recoverer comprises a blood storage tank with an opening in the top, the blood storage tank is used for collecting blood, a negative pressure suction device is installed on the top of the blood storage tank in a threaded mode, and the negative pressure suction device is used for adjusting the negative pressure in the blood storage tank. A blood filter is fixedly embedded in the inner wall of the bottom of the blood storage tank and used for filtering blood, an input catheter and an output catheter are fixedly communicated with the bottom of the blood storage tank, and the input catheter is used for allowing blood to enter the blood storage tank. Through the arrangement of a series of structures, the negative pressure in the blood storage tank can be adjusted according to use requirements when blood of a patient is drained, so that effective drainage is achieved, autologous blood can be directly input into the body of the patient after drainage is completed, the situation of infection caused by allogeneic blood transfusion can be effectively avoided, and the operation is convenient. Collection, filtration and feedback of autologous drainage blood are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of autologous blood recovery devices, and in particular to a disposable autologous blood recovery device. Background Art

[0002] During closed surgery, postoperative drainage and allogeneic blood transfusion are required. During allogeneic blood transfusion, due to the limitations of detection technology and transfusion costs, it is impossible to screen for all blood-borne diseases. Currently, only routine tests are conducted for infectious diseases with greater threats, such as viral hepatitis, AIDS, and syphilis. As a result, infection may occur during allogeneic blood transfusions to patients. In addition, during postoperative drainage, conventional drainage balls or drainage boxes have negative pressure values ​​at 0, 100ml, or 200ml capacity, respectively. As the drainage volume increases, the pressure decreases, and effective drainage cannot be achieved, which does not meet the needs of postoperative drainage. Based on the above, we have proposed a disposable autologous blood salvage device. Summary of the invention

[0003] Based on the technical problems existing in the background technology, the present invention proposes a disposable autologous blood recovery device.

[0004] The disposable autologous blood salvage device proposed by the present invention comprises a blood storage tank with an opening at the top, the blood storage tank is used to collect blood, a negative pressure suction device is threadedly installed on the top of the blood storage tank, the negative pressure suction device is used to adjust the negative pressure inside the blood storage tank, a blood filter is embedded and fixed on the inner wall of the bottom of the blood storage tank, the blood filter is used to filter the blood, an input conduit and an output conduit are connected and fixed at the bottom of the blood storage tank, the input conduit is used to supply blood to enter the blood storage tank, the output conduit is used to discharge blood in the blood storage tank, the input conduit is connected to the blood filter, and the input conduit is away from the blood storage tank One end of the first connecting tube is connected and installed with a first connecting tube, the end of the first connecting tube away from the input catheter is connected and fixed with a three-way joint, one end of the top of the three-way joint is threadedly fixed with a three-way sealing cap, the other end of the top of the three-way joint is connected and fixed with a drainage tube, the output catheter, the input catheter and the first connecting tube are all movably sleeved with a catheter clamp, the catheter clamp is used to control the opening and closing of the output catheter, the input catheter and the first connecting tube, the end of the drainage tube away from the three-way joint is connected and fixed with a guide needle, the guide needle is movably sleeved with a protective sleeve, the other end of the output catheter is connected and fixed with a blood collection mechanism, and the blood collection mechanism is used to collect blood.

[0005] Preferably, the negative pressure suction device comprises a tank cover threadedly mounted on the top of the blood storage tank, and a positive and negative pressure conversion handle is embedded on the top of the tank cover. When the device is started, when the positive and negative pressure conversion handle is fully pressed, the device is in a positive pressure output working state, and when the positive and negative pressure conversion handle is lifted, the device is in a negative pressure input working state. The bottom of the positive and negative pressure conversion handle extends into the blood storage tank, and a positive and negative pressure operating pull rod matching the positive and negative pressure conversion handle is sealed on the inner wall of the bottom of the blood storage tank. The positive and negative pressure conversion handle is used to drive the positive and negative pressure operating pull rod to move, and the positive and negative pressure operating pull rod is matched with the output conduit, and the positive and negative pressure operating pull rod is used to control the opening and closing of the output conduit. A negative pressure adjusting knob and a positive and negative pressure status indicator located on the rear side of the positive and negative pressure conversion handle are embedded on the top of the tank cover, a 0 mark is provided on the front side of the negative pressure adjusting knob, and two dot marks are provided on one side of the negative pressure adjusting knob. When the negative pressure adjusting knob is rotated clockwise, the indicator mark When leaving the "0" position, the power is turned on, the whole device starts to work, and the negative pressure adjustment knob continues to rotate clockwise. When the negative pressure is low, the indicator points to the position of the first dot, and when the negative pressure is high, the indicator points to the approximately center position of the farthest dot. The positive and negative pressure status indicator is a hemispherical soft membrane. When the blood storage tank maintains normal pressure or positive pressure, the soft membrane remains hemispherical. When the blood storage tank maintains negative pressure, the soft membrane is concave, and the negative pressure value in the blood storage tank gradually increases. A negative pressure suction system and a battery are built into the tank cover. The negative pressure adjustment knob and the positive and negative pressure status indicators are electrically connected to the negative pressure suction system and the battery. Two fixing clips located on the right side of the blood storage tank are rotatably installed on the right side of the bottom of the tank cover, and a binding belt matching the fixing clip is installed on the fixing clip. The bottom of the tank cover is fixedly connected to an air filter located in the blood storage tank, the bottom of the negative pressure adjustment knob is an air inlet hole, and the top of the air filter is an entry end and is connected to the air inlet hole.

[0006] Preferably, the negative pressure suction system includes a negative pressure motor electrically connected to the battery, the bottom of the negative pressure motor is fixedly connected to the bottom inner wall of the tank cover, the negative pressure adjustment knob is electrically connected to the battery and the negative pressure motor, the output shaft end of the negative pressure motor is fixedly connected to a drive rod, a piston box is fixedly connected to the bottom inner wall of the tank cover, a piston pad is provided in the sealing movable sleeve of the piston box, the front left side of the drive rod is rotatably installed with the rear side of the piston pad, the right side of the piston box is connected and fixed with a duckbill one-way valve and a first air duct, and the first air duct is connected and fixed on There is an umbrella-shaped one-way valve pad, an elastic airbag is fixedly connected to the inner wall of the bottom of the tank cover, a control switch is arranged on the elastic airbag, the control switch is electrically connected to the battery, the right rear side of the elastic airbag is connected and fixed to the front end of the first air duct, the right rear side of the elastic airbag is connected and fixed to the second air duct, the rear end of the second air duct extends to the inside of the blood storage tank, a third air duct extending to the inside of the blood storage tank is embedded and fixed on the inner wall of the bottom of the tank cover, and the top end of the third air duct is connected to the detection end of the positive and negative pressure status indicator.

[0007] Preferably, the blood collection mechanism comprises a plasma bag connected and fixed to one end of the output conduit, the bottom of the plasma bag is connected and fixed with a blood transfusion socket, and a hanging hole is provided on the front top of the plasma bag for hanging the plasma bag.

[0008] Preferably, a same quick connector is fixedly connected between the end of the input conduit away from the blood storage tank and the bottom end of the first connecting tube, and the connection between the input conduit and the first connecting tube is achieved through the quick connector.

[0009] Preferably, a sealing gasket is bonded and fixed to the inner wall of the bottom of the blood storage tank, and the inner side of the sealing gasket is in movably contact with the outer side of the positive and negative pressure operating rods.

[0010] Preferably, a catheter cap is provided on the movable sleeve of the output catheter, and the catheter cap cooperates with the port of the output catheter, and the catheter cap is used to block the output catheter.

[0011] Preferably, a catheter plug is connected and fixed to the right side of the bottom of the plasma bag, and the inner side of the catheter plug is in close contact with the outer side of the output catheter.

[0012] Preferably, a scale mark note is bonded and fixed to the front side of the blood storage tank, and the scale mark note measures the amount of blood in the blood storage tank. The blood storage tank is made of transparent material.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the cooperation of the blood storage tank, the blood collection mechanism, the negative pressure suction device, the output catheter, the input catheter, the catheter clamp, the guide needle, the drainage tube, the three-way joint and the first connecting tube, the blood of the patient can be drained, and the negative pressure inside the blood storage tank can be adjusted according to the drainage needs during drainage, so as to achieve effective drainage, and after the drainage is completed, the autologous blood can be directly transfused into the patient's body, which can effectively avoid the infection caused by allogeneic blood transfusion.

[0014] The present invention, through a series of structural arrangements, can adjust the negative pressure inside the blood storage tank according to the needs of use when draining the patient's blood, thereby achieving effective drainage, and can directly transfuse the autologous blood into the patient's body after the drainage is completed, which can effectively avoid the infection caused by allogeneic blood transfusion and realize the collection, filtration and reinfusion of autologous drainage blood. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the disposable autologous blood recovery device proposed by the present invention; Figure 2 A schematic diagram of the top view of the negative pressure regulating knob of the disposable autologous blood salvage device proposed by the present invention; Figure 3This is a schematic top view of the internal components of the can cover of the disposable autologous blood salvage device proposed by the present invention.

[0016] In the figure: 1. guide needle; 2. drainage tube; 3. three-way connector; 4. three-way sealing cap; 5. fixing clip; 6. air filter; 7. positive and negative pressure operating lever; 8. blood filter; 9. sealing pad; 10. quick connector; 11. input catheter; 12. catheter clamp; 13. catheter cap; 14. blood storage tank; 15. output catheter; 16. blood transfusion socket; 17. plasma bag; 18. hanging hole; 19. tank cover; 20. positive and negative pressure conversion handle; 21. negative pressure adjustment knob; 22. positive and negative pressure status indicator; 23. binding belt; 24. protective cover; 25. elastic air bag; 26. third airway; 27. second airway; 28. battery; 29. ​​negative pressure motor; 30. piston box; 31. duckbill one-way valve; 32. first airway; 33. umbrella-shaped one-way valve pad. DETAILED DESCRIPTION

[0017] The present invention will be further explained below in conjunction with specific embodiments. Example

[0018] Reference Figure 1-3The present embodiment proposes a disposable autologous blood salvage device, including a blood storage tank 14 with an opening at the top, the blood storage tank 14 is used to collect blood, wherein a scale mark is bonded and fixed to the front side of the blood storage tank 14, the scale mark is used to measure the amount of blood in the blood storage tank 14, the blood storage tank 14 is made of transparent material, which is convenient for personnel to intuitively see the blood inside the blood storage tank 14, and a negative pressure suction device is threadedly installed on the top of the blood storage tank 14, wherein the negative pressure suction device includes a tank cover 19 threadedly installed on the top of the blood storage tank 14, and a positive and negative pressure conversion handle 20 is embedded on the top of the tank cover 19, wherein when the device is started, when the positive and negative pressure conversion handle 20 is fully pressed, the device is in a positive pressure state. Output working state, when the positive and negative pressure conversion handle 20 is lifted, the device is in the negative pressure input working state, the bottom of the positive and negative pressure conversion handle 20 extends into the blood storage tank 14, and the bottom inner wall of the blood storage tank 14 is sealed with a positive and negative pressure operating rod 7 that matches the positive and negative pressure conversion handle 20, wherein a sealing gasket 9 is bonded and fixed to the bottom inner wall of the blood storage tank 14, and the inner side of the sealing gasket 9 is in active contact with the outer side of the positive and negative pressure operating rod 7, and the sealing of the positive and negative pressure operating rod 7 and the blood storage tank 14 is achieved through the sealing gasket 9, the positive and negative pressure conversion handle 20 is used to drive the positive and negative pressure operating rod 7 to move, and the top of the tank cover 19 is embedded with a negative pressure adjustment knob 21 and a positive and negative pressure knob 22 located on the rear side of the positive and negative pressure conversion handle 20. The status indicator 22 has a zero mark on the front side of the negative pressure regulating knob 21, and two dot marks on one side of the negative pressure regulating knob 21. When the negative pressure regulating knob 21 is rotated clockwise and the indicator leaves the "zero" position, the power is turned on, and the entire device starts to work. The negative pressure regulating knob 21 continues to rotate clockwise. When the negative pressure is low, the indicator points to the position of the first dot. When the negative pressure is high, the indicator points to the approximately center position of the farthest dot. The positive and negative pressure status indicator 22 is a hemispherical soft membrane. When the blood storage tank 14 maintains normal pressure or positive pressure, the soft membrane maintains a hemispherical shape. When the blood storage tank 14 maintains negative pressure, the soft membrane is concave, and the negative pressure value in the blood storage tank 14 gradually increases. The tank cover 19 A negative pressure suction system and a battery 28 are built in, and the negative pressure adjustment knob 21 and the positive and negative pressure status indicators 22 are electrically connected to the negative pressure suction system and the battery 28. Two fixing clips 5 located on the right side of the blood storage tank 14 are rotatably installed on the right side of the bottom of the tank cover 19. A binding belt 23 matching with the fixing clip 5 is installed on the fixing clip 5. The whole device is fixed by the matching of the fixing clip 5 and the binding belt 23. The bottom of the tank cover 19 is fixedly connected to an air filter 6 located in the blood storage tank 14. The air filter 6 is used to filter the incoming air to prevent the entry of dust. The bottom of the negative pressure adjustment knob 21 is an air inlet hole, and the top of the air filter 6 is an inlet end and is connected to the air inlet hole. The negative pressure suction system includes a negative pressure motor 29 electrically connected to a battery 28, the bottom of the negative pressure motor 29 is fixedly connected to the bottom inner wall of the tank cover 19, the negative pressure adjustment knob 21 is electrically connected to the battery 28 and the negative pressure motor 29, the output shaft end of the negative pressure motor 29 is fixedly connected to a drive rod, a piston box 30 is fixedly connected to the bottom inner wall of the tank cover 19, a piston pad is provided in the sealing movable sleeve of the piston box 30, the front left side of the drive rod is rotatably installed with the rear side of the piston pad, a duckbill one-way valve 31 and a first air guide pipe 32 are connected and fixed to the right side of the piston box 30, the duckbill one-way valve 31 is used to discharge gas, the first air guide pipe 32 is connected and fixed with an umbrella-shaped one-way valve pad 33, and the tank cover 19 is fixedly connected to the bottom inner wall of the tank cover 19. An elastic airbag 25 is fixedly connected to the inner wall of the bottom, wherein a telescopic spring is installed in the elastic airbag 25, and the elastic force of the telescopic spring is used to assist the elastic airbag 25 to expand and contract. A control switch is provided on the elastic airbag 25, and the control switch is electrically connected to the battery 28. The right rear side of the elastic airbag 25 is connected and fixed to the front end of the first air guide tube 32, and the right rear side of the elastic airbag 25 is connected and fixed to the second air guide tube 27, and the rear end of the second air guide tube 27 extends to the inside of the blood storage tank 14. A third air guide tube 26 extending to the inside of the blood storage tank 14 is embedded and fixed on the inner wall of the bottom of the tank cover 19, and the top end of the third air guide tube 26 is connected to the detection end of the positive and negative pressure status indicator 22; A blood filter 8 is embedded and fixed on the inner wall of the bottom of the blood storage tank 14, and the blood filter 8 is used to filter the blood. An input conduit 11 and an output conduit 15 are connected and fixed at the bottom of the blood storage tank 14. The positive and negative pressure operating levers 7 cooperate with the output conduit 15, and the positive and negative pressure operating levers 7 are used to control the opening and closing of the output conduit 15. The input conduit 11 is used to supply blood into the blood storage tank 14, and the output conduit 15 is used to discharge the blood in the blood storage tank 14, wherein a conduit cap 13 is movably sleeved on the output conduit 15, and the conduit cap 13 cooperates with the port of the output conduit 15, and the conduit cap 13 is used to block the output conduit 15. The input conduit 11 is connected to the blood filter 8, and one end of the input conduit 11 away from the blood storage tank 14 is connected to a first connecting pipe, and the input conduit A same quick connector 10 is fixedly connected between the end of 11 away from the blood storage tank 14 and the bottom end of the first connecting tube, and the connection between the input catheter 11 and the first connecting tube is realized through the quick connector 10, and the end of the first connecting tube away from the input catheter 11 is connected and fixed with a three-way connector 3, and a three-way sealing cap 4 is threadedly fixed on one end of the top of the three-way connector 3, and a drainage tube 2 is connected and fixed at the other end of the top of the three-way connector 3, and a catheter clamp 12 is movably sleeved on the output catheter 15, the input catheter 11 and the first connecting tube, and the drainage tube 2 is used to control the opening and closing of the output catheter 15, the input catheter 11 and the first connecting tube, and the end of the drainage tube 2 away from the three-way connector 3 is connected and fixed with a guide needle 1, and a protective sleeve 24 is movably sleeved on the guide needle 1, and the protective sleeve 24 is used to protect the guide needle 1; The other end of the output catheter 15 is connected and fixed with a blood collection mechanism, which includes a plasma bag 17 connected and fixed to one end of the output catheter 15, wherein a catheter plug is connected and fixed to the right side of the bottom of the plasma bag 17, and the inner side of the catheter plug is in close contact with the outer side of the output catheter 15, and the output catheter 15 is connected to the plasma bag 17 through the catheter plug. The bottom of the plasma bag 17 is connected and fixed with a blood transfusion socket 16, and a hanging hole 18 is provided on the front top of the plasma bag 17, and the hanging hole 18 is used to hang the plasma bag 17. The present invention can adjust the negative pressure inside the blood storage tank 14 according to the needs of use when draining the patient's blood through a series of structural arrangements, thereby achieving effective drainage, and can directly inject autologous blood into the patient's body after the drainage is completed, which can effectively avoid the infection caused by allogeneic blood transfusion and realize the collection, filtration and reinfusion of autologous drainage blood.

[0019] In this embodiment, when not in use, the catheter cap 13 blocks one end of the output catheter 15, and the output catheter 15 is separated from the plasma bag 17. The output catheter 15 is placed in a disc shape at the bottom of the blood storage tank 14. The plasma bag 17 and the output catheter 15 are fixed to the bottom of the blood storage tank 14 by an external strapping belt. The plasma bag 17 and the output catheter 15 are separately placed in a sealed bag, and the drainage tube 2 with a three-way connector 3 and the guide needle 1 connected to the catheter are separately placed in a sealed bag. The entire device is placed in a large sealed packaging bag. When in use, When installing the plasma bag, first check whether the primary package is damaged. If it is damaged, it cannot be used. When using, open the sealed bag and take out the entire device in turn, then take out the drainage tube 2 and the guide needle 1 of the three-way connector 3, connect the bottom end of the three-way connector 3 with the first connecting tube, take out the output catheter 15 and the plasma bag 17, unplug the catheter cap 13, and insert one end of the output catheter 15 into the catheter plug at the bottom of the plasma bag 17. The installation is completed, and then the entire device is clamped on the footboard or bedside railing of the bed by the fixing clip 5, and further fixed with the binding belt 23; When in use, first rotate the negative pressure adjustment knob 21 clockwise to adjust to a low negative pressure, run for more than ten minutes, and then adjust the negative pressure value according to the doctor's instructions. When used for drainage to recover blood, remove the protective cover 24 on the guide needle 1, and after the guide needle 1 is disinfected, insert it into the patient's skin layer, so that the blood enters the blood filter 8 through the guide needle 1, the drainage tube 2, the three-way connector 3, the first connecting tube, and the input catheter 11 in sequence. The blood filter 8 filters the blood, and the filtered blood enters the blood storage tank 14. The drainage volume is monitored by observing the liquid height in the blood storage tank 14 through the numerical value on the scale mark. As the blood enters , so that the negative pressure in the blood storage tank 14 is gradually reduced. The negative pressure inside the blood storage tank 14 can be adjusted by turning the negative pressure adjustment knob 21. When adjusting the negative pressure, the negative pressure inside the blood storage tank 14 is judged by observing the positive and negative pressure status indicator 22. When the blood storage tank 14 maintains a negative pressure, the soft film on the positive and negative pressure status indicator 22 is concave. When the required negative pressure is adjusted, the drainage operation can be continued. After the drainage is completed, the guide needle 1 can be pulled out from the patient's skin. By adjusting the negative pressure in the blood storage tank 14 during the drainage process, the situation where effective drainage cannot be performed due to insufficient negative pressure can be effectively reduced; When used for blood transfusion, the input catheter 11 is clamped near the blood storage tank 14 with the catheter clamp 12, and the external blood transfusion needle is inserted into the blood transfusion socket 16, and then the positive and negative pressure conversion handle 20 is pressed downward to drive the positive and negative pressure operating rod 7 to move upward, thereby releasing the blockage of the output catheter 15, so that the blood in the blood storage tank 14 enters the plasma bag 17 through the output catheter 15, and the blood in the plasma bag 17 enters the human body through the blood transfusion socket 16 and the blood transfusion needle for blood transfusion. After the blood transfusion is completed, the pressing force on the positive and negative pressure conversion handle 20 is released, and the output catheter 15 is clamped near the plasma bag 17 with the catheter clamp 12. When drainage is needed again, the catheter clamp 12 on the input catheter 11 can be directly loosened to continue the drainage operation. By transfusing the patient's own blood into the patient's body, the infection caused by allogeneic blood transfusion can be effectively avoided; During the above-mentioned use, the basic working principle of the negative pressure suction system inside the tank cover 19 is: when the negative pressure adjustment knob 21 is rotated, the battery 28 is energized, the negative pressure motor 29 is started, and the output shaft of the negative pressure motor 29 drives the piston pad to move through the driving rod. During the movement of the piston pad, the gas inside the piston box 30 is squeezed, so that the gas inside the piston box 30 is discharged through the duckbill one-way valve 31. At the same time, part of the gas inside the piston box 30 enters the first air guide tube 32 and is attracted by the umbrella-shaped one-way valve pad 33. Under the suction force of the air, the blood storage tank 14 is sucked into a vacuum, and at the same time, the elastic airbag 25 is deflated under the suction force. The telescopic spring in the elastic airbag 25 is compressed, and the control switch is triggered to disconnect when the elastic airbag 25 is deflated. The control switch controls the battery 28 to cut off the power, and the negative pressure motor 29 is turned off. When the negative pressure inside the blood storage tank 14 is not enough, the suction force is reduced, so that the elastic airbag 25 relies on the elastic force of the telescopic spring inside it to assist the elastic airbag 25 to expand and reset. At this time, the control switch is triggered to turn on, the battery 28 continues to be powered, and the negative pressure motor 29 is started again to continue to inhale to increase the negative pressure inside the blood storage tank 14, thereby forming a closed-loop movement, so that the negative pressure inside the blood storage tank 14 can be guaranteed to be stable, thereby achieving the purpose of stable drainage.

[0020] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A disposable autologous blood recovery device, comprising a blood storage tank (14) with an opening at the top, characterized in that: The top of the blood storage tank (14) is threadedly mounted with a negative pressure suction device, the bottom inner wall of the blood storage tank (14) is embedded and fixed with a blood filter (8), the bottom of the blood storage tank (14) is connected and fixed with an input catheter (11) and an output catheter (15), the input catheter (11) is connected to the blood filter (8), one end of the input catheter (11) away from the blood storage tank (14) is connected and mounted with a first connecting tube, one end of the first connecting tube away from the input catheter (11) is connected and fixed with a three-way joint (3), one end of the top of the three-way joint (3) is threadedly fixed with a three-way sealing cap (4), the other end of the top of the three-way joint (3) is connected and fixed with a drainage tube (2), the output catheter (15), the input catheter (11) and the first connecting tube are all movably sleeved with a catheter clamp (12), one end of the drainage tube (2) away from the three-way joint (3) is connected and fixed with a guide needle (1), a protective sleeve (24) is movably sleeved on the guide needle (1), and the other end of the output catheter (15) is connected and fixed with a blood collection mechanism.

2. The disposable autologous blood salvage device according to claim 1, characterized in that: The negative pressure suction device comprises a tank cover (19) threadedly mounted on the top of the blood storage tank (14); a positive-negative pressure conversion handle (20) is embedded in the top of the tank cover (19); the bottom of the positive-negative pressure conversion handle (20) extends into the blood storage tank (14); a positive-negative pressure operating pull rod (7) matching with the positive-negative pressure conversion handle (20) is sealedly mounted on the inner wall of the bottom of the blood storage tank (14); the positive-negative pressure operating pull rod (7) matches with the output conduit (15); a negative pressure adjustment knob (21) and a positive-negative pressure status indicator (22) located at the rear side of the positive-negative pressure conversion handle (20) are embedded in the top of the tank cover (19); 19) has a built-in negative pressure suction system and a battery (28), the negative pressure adjustment knob (21) and the positive and negative pressure status indicators (22) are electrically connected to the negative pressure suction system and the battery (28), two fixing clips (5) located on the right side of the blood storage tank (14) are rotatably mounted on the bottom right side of the tank cover (19), and a binding belt (23) matching the fixing clips (5) is mounted on the fixing clips (5), and an air filter (6) located in the blood storage tank (14) is fixedly connected to the bottom of the tank cover (19), the bottom of the negative pressure adjustment knob (21) is an air inlet hole, and the top of the air filter (6) is an inlet end and is connected to the air inlet hole.

3. The disposable autologous blood salvage device according to claim 2, characterized in that: The negative pressure suction system comprises a negative pressure motor (29) electrically connected to a battery (28); the bottom of the negative pressure motor (29) is fixedly connected to the bottom inner wall of the tank cover (19); the negative pressure adjustment knob (21) is electrically connected to the battery (28) and the negative pressure motor (29); the end of the output shaft of the negative pressure motor (29) is fixedly connected to a driving rod; the bottom inner wall of the tank cover (19) is fixedly connected to a piston box (30); a piston pad is provided in a sealing movable sleeve in the piston box (30); the front left side of the driving rod is rotatably mounted on the rear side of the piston pad; the right side of the piston box (30) is connected and fixed with a duckbill one-way valve (31) and a first air guide tube (32); the first air guide tube (32) is connected and fixed with an umbrella-shaped one-way valve (31); The valve pad (33) is connected to a bottom inner wall of the tank cover (19) and an elastic air bag (25) is fixedly connected thereto. A control switch is provided on the elastic air bag (25) and is electrically connected to a battery (28). The right rear side of the elastic air bag (25) is connected and fixed to the front end of the first air guide tube (32). The right rear side of the elastic air bag (25) is connected and fixed to the second air guide tube (27). The rear end of the second air guide tube (27) extends to the inside of the blood storage tank (14). A third air guide tube (26) extending to the inside of the blood storage tank (14) is embedded and fixedly mounted on the bottom inner wall of the tank cover (19). The top end of the third air guide tube (26) is connected to the detection end of the positive and negative pressure state indicator (22).

4. The disposable autologous blood salvage device according to claim 2, characterized in that: The blood collection mechanism comprises a plasma bag (17) connected and fixed to one end of an output conduit (15); a blood transfusion socket (16) is connected and fixed to the bottom of the plasma bag (17); and a hanging hole (18) is provided at the top of the front side of the plasma bag (17).

5. The disposable autologous blood salvage device according to claim 1, characterized in that: A common quick connector (10) is fixedly connected between the end of the input conduit (11) away from the blood storage tank (14) and the bottom end of the first connecting tube.

6. The disposable autologous blood salvage device according to claim 2, characterized in that: A sealing gasket (9) is bonded and fixed to the inner wall of the bottom of the blood storage tank (14), and the inner side of the sealing gasket (9) is in active contact with the outer side of the positive and negative pressure operating rod (7).

7. The disposable autologous blood salvage device according to claim 1, characterized in that: A catheter cap (13) is movably sleeved on the output catheter (15), and the catheter cap (13) matches with a port of the output catheter (15).

8. The disposable autologous blood salvage device according to claim 4, characterized in that: A catheter plug is connected and fixed to the right side of the bottom of the plasma bag (17), and the inner side of the catheter plug is in close contact with the outer side of the output catheter (15).

9. The disposable autologous blood salvage device according to claim 1, characterized in that: A scale mark note is bonded and fixed to the front side of the blood storage tank (14), and the blood storage tank (14) is made of a transparent material.

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