Automatic replacement device for venous blood sampling pad

Abstract

The invention provides an automatic venous blood sampling pad replacement device which comprises an automatic pad supply device, and the automatic pad supply device comprises a micro motor, a disinfection module and an intelligent detection module which are all connected with a PLC. The automatic pad supply device further comprises a blood sampling platform, a placing block is fixedly installed on the blood sampling platform, and a recycling shell and a storage shell are arranged on the two sides of the placing block respectively. A recycling rod is arranged in the recycling shell and connected with an output shaft of the micro motor, a new blood sampling pad is arranged in the storage shell, a polluted blood sampling pad is wound on the recycling rod, and meanwhile the new blood sampling pad in the storage shell is pulled to the position above the placing block; a to-be-sampled wrist of the patient can be placed on the blood sampling pad above the placing block; the intelligent detection module comprises a camera. The intelligent detection module is adopted to detect the use state of the blood sampling pad, the replacement process is automatically triggered, cleanliness of a blood sampling area is ensured, the blood sampling efficiency is improved, the infection risk is reduced, and the operation process of medical staff is simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an automatic replacement device for a venous blood sampling pad. Background Art

[0002] Venous blood sampling is a common operation in medical diagnosis and treatment. Through blood testing, diseases can be discovered, diagnosed or assisted in diagnosis. Clinical inpatients, outpatients and physical examination customers cannot do without collecting blood samples for examination. In particular, the workload of blood collection at outpatient examination windows and physical examination collection windows is large. The use of blood collection pads is crucial to prevent cross infection and keep the blood collection area clean. However, the existing blood collection pad replacement process has the following technical defects: the blood collection pad replacement process is mostly manual, which has problems such as low efficiency and easy to cause pollution.

[0003] Therefore, how to design an automatic replacement device for venous blood sampling pads has become an urgent problem to be solved. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an automatic replacement device for a venous blood sampling pad to solve at least one of the above technical problems.

[0005] The technical solution of the present invention is: an automatic replacement device for venous blood collection pads, including an automatic pad supply device, the automatic pad supply device includes a micro motor, a disinfection module, and an intelligent detection module, the micro motor, the disinfection module, and the intelligent detection module are all connected to a PLC controller, and the PLC controller is connected to a control screen; the micro motor is a servo motor to ensure the accuracy and repeatability of the replacement process;

[0006] The automatic blood supply device also includes a blood collection platform, on which a placement block is fixedly installed, and a recovery shell and a storage shell are respectively arranged on both sides of the placement block; through grooves are opened on the end faces of the recovery shell and the storage shell on one side close to each other, and a recovery rod is arranged in the recovery shell, and the recovery rod is connected to the output shaft of the micro motor, and a new blood collection pad is arranged in the storage shell, and the contaminated blood collection pad is wound around the recovery rod, and the new blood collection pad in the storage shell is pulled to the top of the placement block at the same time; the blood collection pad above the placement block can be placed on the patient's wrist to be blood drawn; the intelligent detection module includes a camera, and the PLC controller can collect images above the placement block through the camera, and determine whether the patient's wrist to be blood drawn has left the blood collection pad through image comparison.

[0007] The present invention adopts a control screen to monitor the status of the blood sampling pad, manually trigger the replacement process, or perform equipment settings and maintenance. The simple and intuitive operation interface is convenient for medical staff to quickly get started; an intelligent detection module is used to detect the use status of the blood sampling pad, and the replacement process is automatically triggered. The micro-motor of the blood sampling platform drives the recovery rod to wrap around the contaminated blood sampling pad, and at the same time pulls the new blood sampling pad in the storage shell to the top of the placement block, thereby automatically supplying a new blood sampling pad, facilitating the next venous blood collection, ensuring the cleanliness of the blood collection area, improving the blood collection efficiency, reducing the risk of infection, and simplifying the operation process of medical staff.

[0008] The technical solution of the present invention is: an automatic replacement device for venous blood sampling pads, which comprises the following steps when used:

[0009] S1. Blood collection pad arrangement,

[0010] Lead the new blood sampling pad in the storage shell through the through slot of the storage shell, and stick the end of the blood sampling pad away from the storage shell to the adhesive strip, so that the blood sampling pad is located above the placement block;

[0011] S2. Blood collection,

[0012] Medical staff draw blood from the patient's wrist;

[0013] S3, intelligent detection,

[0014] The PLC controller starts the intelligent detection module, which takes pictures with a camera, collects images above the placement block, and determines whether the patient's wrist has left the blood collection pad through image comparison;

[0015] S4, the intelligent detection module sends a signal,

[0016] When the intelligent detection module determines that the patient's wrist has left the blood sampling pad above the placement block, the intelligent detection module sends a signal to the PLC controller;

[0017] S5, the disinfection module and the automatic replacement of the blood collection pad are started.

[0018] ①The PLC controller starts the ultraviolet sterilization lamp on the inner wall of the recycling shell;

[0019] ②The PLC controller starts the micro motor, which drives the recovery rod to rotate, and the contaminated blood collection pad is wound on the recovery rod through the through slot of the recovery shell, and at the same time, the new blood collection pad in the storage shell is led out through the through slot of the storage shell and pulled above the placement block;

[0020] ③The PLC controller turns off the micro motor and ultraviolet sterilization lamp in sequence;

[0021] S6. Repeat the above steps S2 to S5 to complete the blood sampling from the wrists of multiple different patients.

[0022] The present invention cooperates with a recovery rod and a storage rod through a micro motor, and the micro motor drives the recovery rod to rotate, so that the contaminated blood sampling pad is wound on the recovery rod, and at the same time, a new blood sampling pad on the storage rod is pulled above the placement block, which is convenient for the next venous blood sampling, and effectively avoids the low efficiency of manual operation and the occurrence of infection of medical staff. The first mounting seat cooperates with the second mounting seat, the connecting rod, the fixing rod and the reset spring to realize the detachable installation between the first mounting seat and the second mounting seat, so that the blood sampling pad can be replaced after the device has been used for a period of time, and the operation is simple and fast, which improves the practicality of the device; the sliding rod cooperates with the rotating drum, the pressure strip, the fixing ring and the The torsion spring and the pressure strip compact the new blood collection pad wound on the storage rod and the contaminated blood collection pad wound on the recovery rod, thereby preventing the blood collection pad from slipping off the storage rod and the recovery rod, and improving the stability of the wound blood collection pad; after a period of use, the recovery shell and the storage shell are removed from the blood collection platform, and then the second mounting seat is removed from the first mounting seat, the storage rod and the recovery rod are taken out from the first mounting seat, and new storage rods and recovery rods are replaced; the detachable connection between the first mounting seat and the second mounting seat facilitates the replacement of new blood collection pads, and the detachable connection between the output shaft of the micromotor and the recovery rod is achieved through a pin groove and a latch. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the present invention.

[0024] Figure 2 It is an exploded view of the present invention.

[0025] Figure 3 It is a schematic diagram of the internal structure of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure between the slide bar, the pressure strip and the rolled blood sampling pad of the present invention.

[0027] Figure 5 It is a schematic diagram of the installation structure of the first installation seat and the second installation seat of the present invention.

[0028] Figure 6 It is a schematic diagram of the internal installation structure of the first installation seat and the second installation seat of the present invention.

[0029] In the figure: 1. blood collection platform; 2. placement block; 3. recovery shell; 4. storage shell; 5. blood collection pad; 6. through groove; 7. first mounting seat; 8. second mounting seat; 9. slot; 10. connecting rod; 11. fixed groove; 12. recovery rod; 13. adhesive strip; 14. limit groove; 15. limit ring; 16. fixed rod; 17. mounting groove; 18. reset spring; 19. guide column; 20. moving groove; 21. push plate; 22. slide rod; 23. pressure strip; 24. fixed ring; 25. torsion spring; 26. rotating drum; 27. storage rod; 28. ultraviolet sterilization lamp; 29. ​​micro motor. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] See also Figure 1-6 The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0032] Embodiment 1: A device for automatically replacing a venous blood sampling pad, referring to Figure 1 , Figure 2 , including an automatic pad supply device, the automatic pad supply device includes a micro motor 29, a disinfection module, and an intelligent detection module, the micro motor 29, the disinfection module, and the intelligent detection module are all connected to the PLC controller, and the PLC controller is connected to the control screen; the micro motor 29 is a servo motor to ensure the accuracy and repeatability of the replacement process;

[0033] The automatic blood supply device also includes a blood sampling platform 1, on which a placement block 2 is fixedly installed, and a recovery shell 3 and a storage shell 4 are respectively arranged on both sides of the placement block 2; a through groove 6 is opened on the end surface of the recovery shell 3 and the storage shell 4 on one side close to each other, a recovery rod 12 is arranged in the recovery shell 3, and the recovery rod 12 is connected to the output shaft of the micro motor 29, and a new blood sampling pad 5 is arranged in the storage shell 4, and the contaminated blood sampling pad 5 is wound around the recovery rod 12, and the new blood sampling pad 5 in the storage shell 4 is pulled to the top of the placement block 2 at the same time; the blood sampling pad 5 above the placement block 2 can be placed on the patient's wrist to be blooded; the intelligent detection module includes a camera, and the PLC controller can collect the image above the placement block 2 through the camera, and determine whether the patient's wrist to be blooded has left the blood sampling pad 5 through image comparison; the intelligent detection module also includes a variety of sensors, such as pressure sensors, position sensors, etc., and the pressure sensors and position sensors can be used to determine whether the patient's wrist to be blooded has left the blood sampling pad 5. The present invention adopts a control screen to monitor the status of the blood sampling pad, manually trigger the replacement process, or perform equipment settings and maintenance. The simple and intuitive operation interface is convenient for medical staff to quickly get started; an intelligent detection module is used to detect the use status of the blood sampling pad, and the replacement process is automatically triggered. The micro-motor of the blood sampling platform drives the recovery rod to wrap around the contaminated blood sampling pad, and at the same time pulls the new blood sampling pad in the storage shell to the top of the placement block, thereby automatically supplying a new blood sampling pad, facilitating the next venous blood collection, ensuring the cleanliness of the blood collection area, improving the blood collection efficiency, reducing the risk of infection, and simplifying the operation process of medical staff.

[0034] Embodiment 2: Based on Embodiment 1, the recovery shell 3, the storage shell 4 and the blood collection platform 1 are all detachably connected, and the disinfection module includes an ultraviolet sterilization lamp 28, which is respectively located on the inner wall of the recovery shell 3 and the storage shell 4. The present invention adopts a disinfection module arranged on the inner wall of the recovery shell, and the contaminated blood collection pad wrapped on the recovery rod is disinfected by the ultraviolet sterilization lamp to avoid cross infection; the new blood collection pad in the storage shell is disinfected by the ultraviolet sterilization lamp to eliminate possible microbial contamination, and the aseptic operation during the replacement process is achieved.

[0035] Embodiment 3: Based on Embodiment 1, refer to Figure 3Two groups of first mounting seats 7 are fixedly installed on the blood sampling platform 1, and a group of first mounting seats 7 are respectively arranged in the recovery shell 3 and the storage shell 4. Any group of first mounting seats 7 includes symmetrically arranged first mounting seats 7, and any first mounting seat 7 is detachably connected to the second mounting seat 8. A storage rod 27 is arranged between the two first mounting seats 7 in the storage shell 4, and a blood sampling pad 5 is wound on the outside of the storage rod 27. The recovery rod 12 is located between the two first mounting seats 7 in the recovery shell 3, and the outer cylindrical surface of the recovery rod 12 is axially fixedly connected with an adhesive strip 13. The micro motor 29 is located on one side end surface of the first mounting seat 7, and the micro motor 29 is located between the first mounting seat 7 and the inner wall of the recovery shell 3. The present invention adopts a method of respectively arranging a group of first mounting seats in a recovery shell and a storage shell, a group of first mounting seats and a second mounting seat in the recovery shell are used to fix the recovery rod, a group of first mounting seats and a second mounting seat in the storage shell are used to fix the storage rod, the recovery rod is used to wrap around the contaminated blood collection pad, and the storage rod is used to store a new blood collection pad, and the micromotor can drive the recovery rod to wrap around the contaminated blood collection pad, and at the same time pull the new blood collection pad in the storage shell to the top of the placement block; after a period of use, the recovery shell and the storage shell are disassembled from the blood collection platform, and then the second mounting seat is disassembled from the first mounting seat, and the storage rod and the recovery rod are taken from the first mounting seat and replaced with new ones, and the new blood collection pad is conveniently replaced by the detachable connection between the first mounting seat and the second mounting seat, and the output shaft of the micromotor and the recovery rod are detachably connected by a pin groove and a latch.

[0036] Embodiment 4: Based on Embodiment 3, refer to Figure 5 , the top surface of the first mounting seat 7 is provided with slots 9 arranged at intervals, the bottom surface of the second mounting seat 8 is fixedly connected with connecting rods 10 arranged at intervals, the connecting rods 10 are arranged one by one with the slots 9, the first mounting seat 7 is provided with a mounting groove 17 inside, two fixing rods 16 are slidably installed in the mounting groove 17, the connecting rod 10 is provided with a penetrating fixing groove 11, and the fixing groove 11 is adapted to the fixing rod 16. The present invention adopts connecting rods arranged at intervals on the bottom surface of the second mounting seat, aligns the second mounting seat with the first mounting seat, presses the second mounting seat downward, and inserts the connecting rod into the slot on the top surface of the first mounting seat, the first mounting seat is provided with a mounting groove inside, two fixing rods are slidably installed in the mounting groove and are installed in the penetrating fixing groove on the connecting rod, the fixing rod restricts the connecting rod, and the second mounting seat is fixed to the first mounting seat, thereby ensuring the stability of the recovery rod and the storage rod when they rotate between the two first mounting seats.

[0037] Embodiment 5: Based on Embodiment 4, refer to Figure 6A return spring 18 is fixedly connected between the two fixed rods 16, and a movable groove 20 is opened on one end surface of the first mounting seat 7. The movable groove 20 is connected to the mounting groove 17. A push plate 21 is slidably installed in the movable groove 20, and one end of the push plate 21 is fixedly installed on the side of the fixed rod 16. The present invention adopts a reset spring connected between the two fixing rods. When the second mounting seat is installed on the first mounting seat, the lower end of the connecting rod and one end of the fixing rod are both inclined. When the connecting rod moves down, it contacts and squeezes the fixing rod, and the connecting rod drives the two fixing rods to move relatively close to each other. At this time, the reset spring is in a compressed state. As the connecting rod moves down, the fixing groove moves to the position of the fixing rod, and the compressed reset spring drives the fixing rod to be inserted into the fixing groove to restore the initial state, thereby fixing the second mounting seat on the first mounting seat; a push plate is provided on the side of the fixing rod, and the push plate exposes the moving groove. When a new blood sampling pad needs to be replaced, the two push plates are moved relatively close to each other, so that the fixing rod is moved out of the fixing groove. At this time, the fixing rod no longer restricts the connecting rod, and the second mounting seat can be freely removed from the first mounting seat, which is convenient for replacing a new blood sampling pad. The operation is simple and quick, and the practicality of the device is improved.

[0038] Embodiment 6: Based on Embodiment 5, guide posts 19 are fixedly mounted on the end faces of the two fixed rods 16 on the side close to each other, and the two ends of the reset spring 18 are respectively sleeved on the outer ring of the guide post 19. The present invention adopts the method of arranging guide posts on the end faces of the two fixed rods on the side close to each other, and installing the reset spring on the outer ring of the guide posts. The guide posts guide and limit the reset spring, avoid the reset spring from deflecting during deformation, and improve the stability of the reset spring during use.

[0039] Embodiment 7, on the basis of Embodiment 5, the top surface of the first mounting seat 7 and the bottom surface of the second mounting seat 8 are both provided with a limiting groove 14, and the outer rings of the recovery rod 12 and the storage rod 27 are both fixedly connected to the limiting ring 15, and the limiting ring 15 is adapted to the limiting groove 14. The present invention adopts the method of providing the limiting groove on the top surface of the first mounting seat and the bottom surface of the second mounting seat to limit the limiting ring, and the limiting ring rotates in the limiting groove, thereby improving the stability of the recovery rod and the storage rod when rotating.

[0040] Embodiment 8: Based on Embodiment 5, Figure 4The recovery shell 3 and the storage shell 4 are both fixedly installed with a slide bar 22, and any one of the slide bars 22 is provided with a rotating drum 26 arranged at intervals, and a pressure strip 23 is fixedly connected to the circumferential surface of any one of the rotating drums 26. The present invention adopts a method of arranging a rotating drum on the slide bar, and a pressure strip is arranged on the rotating drum, and the pressure strip can press the outer ring of the wound blood collection pad, so that the blood collection pad curled on the recovery rod and the storage rod is kept in close contact; the pressure strip is an elastic spring sheet, and when the recovery rod rewinds the contaminated blood collection pad, as the contaminated blood collection pad increases, the blood collection pad squeezes the pressure strip to deform it, and the deformed pressure strip makes the contaminated blood collection pad fit on the recovery rod, so that the blood collection pad wound on the recovery rod is tight, and it is prevented from scattering from the recovery rod, and the stability of the recovery rod winding the contaminated blood collection pad is improved.

[0041] Embodiment 9: On the basis of Embodiment 8, the rotating drum 26 is rotatably mounted on the slide bar 22, and the slide bar 22 is fixedly sleeved with fixed rings 24 arranged at intervals, and any fixed ring 24 is located between the first mounting seat 7 and the rotating drum 26, and a torsion spring 25 is fixedly connected between the fixed ring 24 and the rotating drum 26, and the torsion spring 25 is sleeved on the outer ring of the slide bar 22. The present invention adopts a fixed sleeve fixed on the slide bar, and a torsion spring is fixedly connected between the fixed ring and the rotating drum. The increase of the contaminated blood sampling pad on the recovery rod causes the pressure strip to rotate, and the pressure strip drives the rotating drum to rotate, and the rotating drum causes the torsion spring to twist. The twisted torsion spring makes the rotating drum always have a tendency to reverse, so that the pressure strip is always attached to the wound blood sampling pad; the torsion spring arranged on the storage rod is in a twisted state at the beginning, and as the blood sampling pad on the storage rod decreases, the twisted torsion spring drives the pressure strip to rotate, and the pressure strip presses the blood sampling pad on the storage rod to keep it tight, and the torsion spring can adjust the pressure according to the thickness of the wound blood sampling pad, thereby improving the practicality of the pressure strip.

[0042] Embodiment 10: An automatic replacement device for a venous blood sampling pad, characterized in that: when used, it includes the following steps:

[0043] S1, blood collection pad 5 arrangement,

[0044] Lead the new blood sampling pad 5 in the storage shell 4 through the through slot 6 of the storage shell 4, and stick the end of the blood sampling pad 5 away from the storage shell 4 to the adhesive strip 13, so that the blood sampling pad 5 is located above the placement block 2;

[0045] S2. Blood collection,

[0046] Medical staff draw blood from the patient's wrist;

[0047] S3, intelligent detection,

[0048] The PLC controller starts the intelligent detection module, which takes pictures with a camera to collect images above the placement block 2 and determines whether the patient's wrist has left the blood collection pad 5 by image comparison;

[0049] S4, the intelligent detection module sends a signal,

[0050] When the intelligent detection module determines that the patient's wrist has left the blood sampling pad 5 above the placement block 2, the intelligent detection module sends a signal to the PLC controller;

[0051] S5, the disinfection module and the automatic replacement of the blood collection pad 5 are started,

[0052] ① The PLC controller starts the ultraviolet sterilization lamp 28 on the inner wall of the recovery shell 3;

[0053] ② The PLC controller starts the micro motor 29, which drives the recovery rod 12 to rotate, and the contaminated blood sampling pad 5 is wound on the recovery rod 12 through the through slot 6 of the recovery shell 3, and at the same time, the new blood sampling pad 5 in the storage shell 4 is led out through the through slot 6 of the storage shell 4 and pulled above the placement block 2;

[0054] ③The PLC controller turns off the micro motor 29 and the ultraviolet sterilization lamp 28 in sequence;

[0055] S6. Repeat the above steps S2 to S5 to complete the blood sampling from the wrists of multiple different patients.

[0056] The present invention cooperates with a recovery rod and a storage rod through a micromotor, and the micromotor drives the recovery rod to rotate, so that the contaminated blood sampling pad is wound on the recovery rod, and at the same time, a new blood sampling pad on the storage rod is pulled above the placement block, which is convenient for the next venous blood sampling, and effectively avoids the low efficiency of manual operation and the infection of medical staff. The first mounting seat cooperates with the second mounting seat, the connecting rod, the fixing rod and the reset spring to realize the detachable installation between the first mounting seat and the second mounting seat, so that the blood sampling pad can be replaced conveniently after the device has been used for a period of time, and the operation is simple and fast, which improves the practicality of the device; the sliding rod cooperates with the rotating drum, the pressure strip, the fixing ring and the torsion spring, and the pressure strip compacts the new blood sampling pad wound on the storage rod and the contaminated blood sampling pad wound on the recovery rod, so as to avoid the blood sampling pad from sliding off the storage rod and the recovery rod, and improves the stability of the wound blood sampling pad; after a period of use, the recovery shell and the storage shell are removed from the blood sampling pad The blood collection pad is disassembled from the blood collection platform, and then the second mounting base is disassembled from the first mounting base, the storage rod and the recovery rod are taken out from the first mounting base, and new storage rods and recovery rods are replaced; the detachable connection between the first mounting base and the second mounting base is convenient for replacing a new blood collection pad, and the output shaft of the micromotor and the recovery rod are detachably connected by pin grooves and latches; advanced sensors and image comparison technology are used to monitor the use status of the blood collection pad in real time. Once it is detected that the blood collection pad has been used or contaminated, the system will automatically trigger the replacement process. The automatic replacement device not only improves the efficiency and safety of blood collection, but also reduces the manual operation of medical staff, reduces the risk of human errors and infection, and is suitable for use in blood collection rooms and laboratories (when blood samples are collected in laboratories) of medical institutions (hospitals, clinics, etc.), emergency medical services (in ambulances or other emergency medical service occasions).

[0057] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An automatic replacement device for a venous blood collection pad, comprising an automatic pad supply device, characterized in that: The automatic pad supply device comprises a micro motor (29), a disinfection module, and an intelligent detection module, wherein the micro motor (29), the disinfection module, and the intelligent detection module are all connected to a PLC controller, and the PLC controller is connected to a control screen; The automatic blood supply device also includes a blood sampling platform (1), a placement block (2) is fixedly mounted on the blood sampling platform (1), and a recovery shell (3) and a storage shell (4) are respectively arranged on both sides of the placement block (2); a through groove (6) is provided on the end surfaces of the recovery shell (3) and the storage shell (4) on one side close to each other, a recovery rod (12) is arranged in the recovery shell (3), and the recovery rod (12) is connected to the output shaft of the micro motor (29); a new blood sampling pad (5) is arranged in the storage shell (4), and the contaminated blood sampling pad (5) is wound around the recovery rod (12), and the new blood sampling pad (5) in the storage shell (4) is pulled above the placement block (2); the blood sampling pad (5) above the placement block (2) can be placed on the wrist of the patient to be blood drawn; The intelligent detection module comprises a camera, and the PLC controller can collect an image above the placement block (2) through the camera, and determine whether the patient's wrist to be blood drawn has left the blood collection pad (5) through image comparison.

2. The automatic replacement device for venous blood sampling pad according to claim 1, characterized in that: The recovery shell (3), the storage shell (4) and the blood collection platform (1) are all detachably connected, and the disinfection module comprises an ultraviolet sterilization lamp (28), which is respectively located on the inner walls of the recovery shell (3) and the storage shell (4).

3. The automatic replacement device for venous blood sampling pad according to claim 1, characterized in that: Two groups of first mounting seats (7) are fixedly mounted on the blood sampling platform (1), and a group of first mounting seats (7) is respectively arranged in the recovery shell (3) and the storage shell (4), any group of first mounting seats (7) includes symmetrically arranged first mounting seats (7), and any first mounting seat (7) is detachably connected to the second mounting seat (8), a storage rod (27) is arranged between the two first mounting seats (7) in the storage shell (4), and a blood sampling pad (5) is wound around the outside of the storage rod (27), a recovery rod (12) is located between the two first mounting seats (7) in the recovery shell (3), and an adhesive strip (13) is axially fixedly connected to the outer cylindrical surface of the recovery rod (12), and a micro motor (29) is located on one side end surface of the first mounting seat (7), and the micro motor (29) is located between the first mounting seat (7) and the inner wall of the recovery shell (3).

4. The automatic replacement device for venous blood sampling pad according to claim 3, characterized in that: The top surface of the first mounting seat (7) is provided with slots (9) arranged at intervals, the bottom surface of the second mounting seat (8) is fixedly connected with connecting rods (10) arranged at intervals, the connecting rods (10) and the slots (9) are arranged in a one-to-one correspondence, the first mounting seat (7) is provided with a mounting groove (17), two fixing rods (16) are slidably mounted in the mounting groove (17), and a penetrating fixing groove (11) is provided on the connecting rod (10), and the fixing groove (11) is adapted to the fixing rod (16).

5. The automatic replacement device for venous blood sampling pad according to claim 4, characterized in that: A return spring (18) is fixedly connected between the two fixed rods (16); a movable groove (20) is provided on one end surface of the first mounting seat (7); the movable groove (20) is connected to the mounting groove (17); a push plate (21) is slidably installed in the movable groove (20); one end of the push plate (21) is fixedly installed on the side surface of the fixed rod (16).

6. The automatic replacement device for venous blood sampling pad according to claim 5, characterized in that: A guide column (19) is fixedly mounted on the end surfaces of one side of the two fixing rods (16) that are close to each other, and the two ends of the return spring (18) are respectively sleeved on the outer ring of the guide column (19).

7. The automatic replacement device for venous blood sampling pad according to claim 5, characterized in that: The top surface of the first mounting seat (7) and the bottom surface of the second mounting seat (8) are both provided with a limiting groove (14), and the outer rings of the recovery rod (12) and the storage rod (27) are both fixedly connected to a limiting ring (15), and the limiting ring (15) is adapted to the limiting groove (14).

8. The automatic replacement device for venous blood sampling pad according to claim 5, characterized in that: Slide rods (22) are fixedly installed inside the recovery shell (3) and the storage shell (4), and rotating drums (26) arranged at intervals are provided on any of the slide rods (22), and a pressure strip (23) is fixedly connected to the circumferential surface of any of the rotating drums (26).

9. The automatic replacement device for venous blood sampling pad according to claim 8, characterized in that: The rotating drum (26) is rotatably mounted on the slide bar (22). The slide bar (22) is fixedly sleeved with fixed rings (24) arranged at intervals. Any fixed ring (24) is located between the first mounting seat (7) and the rotating drum (26). A torsion spring (25) is fixedly connected between the fixed ring (24) and the rotating drum (26). The torsion spring (25) is sleeved on the outer ring of the slide bar (22).

10. An automatic replacement device for venous blood sampling pad according to any one of claims 1 to 9, characterized in that: The application includes the following steps: S1. blood collection pad (5) arrangement, Leading a new blood sampling pad (5) in the storage shell (4) through the through groove (6) of the storage shell (4), and adhering the end of the blood sampling pad (5) away from the storage shell (4) to the adhesive strip (13), so that the blood sampling pad 5 is located above the placement block 2; S2. Blood collection, Medical staff draw blood from the patient's wrist; S3, intelligent detection, The PLC controller starts the intelligent detection module, which takes a picture through a camera to collect an image above the placement block (2), and determines whether the patient's wrist has left the blood collection pad (5) through image comparison; S4, the intelligent detection module sends a signal, When the intelligent detection module determines that the patient's wrist has left the blood sampling pad (5) above the placement block (2), the intelligent detection module sends a signal to the PLC controller; S5, the disinfection module and the automatic replacement of the blood collection pad (5) are started, ① The PLC controller starts the ultraviolet sterilization lamp (28) on the inner wall of the recovery shell (3); ② The PLC controller starts the micro motor (29), and the micro motor (29) drives the recovery rod (12) to rotate, so that the contaminated blood sampling pad (5) passes through the through slot (6) of the recovery shell (3) and is wound on the recovery rod (12), and at the same time, the new blood sampling pad (5) in the storage shell (4) is led out through the through slot (6) of the storage shell (4) and pulled to the top of the placement block (2); ③ The PLC controller turns off the micro motor (29) and the ultraviolet sterilization lamp (28) in sequence; S6. Repeat the above steps S2 to S5 to complete the blood sampling from the wrists of multiple different patients.

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