A rapid blood drawing device for overcoming high altitude negative pressure

Abstract

The application discloses a rapid blood drawing device for overcoming plateau negative pressure and relates to the technical field of blood drawing instruments.The rapid blood drawing device comprises a blood drawing box body mechanism, wherein the blood drawing box body mechanism comprises a base box body, the top of the base box body is provided with a blood drawing box body, a test tube containing cavity is arranged on the left side of the blood drawing box body, a negative pressure tube containing cavity is arranged on the right side of the blood drawing box body, a multifunctional box cover is movably connected to the top of the rear side of the blood drawing box body, and the rapid blood drawing device further comprises a negative pressure source mechanism, a test tube supporting assembly and a test tube rack step arrangement mechanism.The negative pressure source mechanism is installed at the bottom of the base box body.The rapid blood drawing device can provide negative pressure for blood drawing test tubes by means of a negative pressure tank, can overcome the problem that the blood drawing speed is slow due to plateau negative pressure, and is convenient and fast for blood drawing.After the multifunctional box cover is opened, the multifunctional box cover and the test tube rack step arrangement mechanism can make three test tube racks in a step distribution mode with the front low and the rear high, the labels on the blood drawing test tubes are easy to see, and the blood drawing test tubes are not easy to interfere with each other when being taken.

Description

Technical Field

[0001] This invention relates to the field of blood drawing instruments, specifically a rapid blood drawing device that overcomes the negative pressure at high altitudes. Background Technology

[0002] In high-altitude areas, traditional blood-drawing devices are prone to insufficient negative pressure, and the viscosity of patients' blood also increases. As a result, there may be situations where blood cannot be drawn or the blood draw is slow. If blood cannot be drawn, medical staff will not be able to examine the patient's body, and if the blood draw is slow, it will cause greater psychological stress to the patient. In addition, when blood is drawn, the test tubes are placed in a rectangular array on the test tube rack, making it difficult to see the labels on the test tubes, and they are prone to interference when being picked up. Summary of the Invention

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a rapid blood drawing device that overcomes the negative pressure at high altitudes. By using a negative pressure tank to provide negative pressure to the blood drawing tubes, the slow blood drawing speed caused by negative pressure at high altitudes can be overcome, making blood drawing convenient and quick. After opening the multi-functional box lid, the multi-functional box lid, together with the stepped arrangement mechanism of the test tube rack, allows the three test tube racks to be arranged in a stepped shape with the front lower and the back higher, making it easy to see the labels on the blood drawing tubes and preventing interference when taking out the blood drawing tubes. This effectively solves the problems in the background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rapid blood drawing device for overcoming negative pressure at high altitudes, comprising a blood drawing box mechanism, wherein the blood drawing box mechanism includes a base box, the top of which supports the lower half of the blood drawing box, a test tube receiving cavity is provided on the left side of the blood drawing box, and a negative pressure tube receiving cavity is provided on the right side of the blood drawing box, and a multi-functional box cover is movably connected to the rear top of the blood drawing box, and further comprising: A negative pressure source mechanism is installed at the bottom of the base box, and the negative pressure source mechanism is connected to the blood drawing negative pressure supply mechanism; A test tube support assembly is installed inside the test tube cavity, and a rapid blood collection unit is provided on the test tube support assembly. The test tube rack stepped arrangement mechanism is installed inside the test tube receiving cavity and is connected to the test tube support assembly.

[0005] Furthermore, the test tube support assembly includes a vertical guide groove, a slider, and a test tube rack. Three test tube racks are arranged longitudinally at equal intervals in the test tube receiving cavity. Each test tube rack has multiple test tube placement positions arranged laterally at equal intervals. Two sliders are arranged on both sides of each test tube rack. Vertical guide grooves that are slidably connected to the corresponding sliders are arranged on both sides of the test tube receiving cavity.

[0006] The bottom of the base box is used to house the negative pressure source mechanism. The test tube receiving cavity inside the blood drawing box is used to house the test tube support assembly. The negative pressure tube receiving cavity inside the blood drawing box is used to house the blood drawing negative pressure supply mechanism. When in use, first open the multi-functional box cover and flip it back 180 degrees. The side of the multi-functional box cover abuts against the rear end of the test tube rack stepped arrangement mechanism. With the help of the test tube rack stepped arrangement mechanism, the three test tube racks move upward. The height of the three test tube racks increases from front to back in a stepped arrangement. After placing the blood drawing test tubes in the test tube placement positions of the test tube rack, there will be no obstruction in front and behind, and it is easy to take them out. When all the test tube placement positions on a test tube rack are full of blood drawing test tubes, the test tube rack and slider can also be moved up along the vertical guide groove to remove a test tube rack and the horizontal row of blood drawing test tubes on it. The transfer of the test tube rack and the blood drawing test tubes is not affected by the test tube rack stepped arrangement mechanism. During the blood draw, first place the blood collection tube from the rapid blood collection unit onto the tube rack. Then, connect the rapid blood collection unit to the negative pressure supply mechanism. Insert the blood collection needle from the rapid blood collection unit into the patient's vein. The negative pressure source mechanism will then operate, drawing negative pressure into the blood collection tube through the negative pressure supply mechanism. Venous blood will enter the blood collection tube. Once the negative pressure source mechanism stops operating, disconnect the rapid blood collection unit from the negative pressure supply mechanism to complete the blood draw.

[0007] Furthermore, the test tube rack stepped arrangement mechanism includes a longitudinal sliding rod, with a guide wheel rotatably mounted at the bottom of each slider. Sliding sleeves are provided on both sides of the test tube receiving cavity, and a longitudinal sliding rod is slidably connected within each sleeve. The upper side of each longitudinal sliding rod is rotatably connected to a corresponding guide wheel. Three guide plates are installed longitudinally at equal intervals on the upper side of the longitudinal sliding rod, each guide plate located behind its corresponding guide wheel, with the height of the three guide plates increasing sequentially from front to back. Three ramps are provided on the front side of each of the three guide plates, with the slope of the three ramps increasing sequentially from front to back, and the horizontal width of the three ramps being the same. The top of the rear end of the longitudinal sliding rod is connected to the front end of a control rod via a vertical rod. The rear end of the control rod passes through a rod hole on the rear side of the top of the blood drawing box and extends to the outside of the blood drawing box. The front end of the longitudinal sliding rod is connected to a box cover closing and reset assembly. A box cover opening and locking assembly is installed on the rear side of the top of the blood drawing box.

[0008] Furthermore, the lid closing and reset assembly includes a telescopic rod and a reset spring. The front end of the longitudinal slide rod is connected to the rear end of the telescopic rod, and the front end of the telescopic rod is connected to the front side of the test tube receiving cavity. A reset spring is sleeved on the telescopic rod, and the front and rear ends of the reset spring are respectively connected to the front side of the test tube receiving cavity and the front end of the longitudinal slide rod.

[0009] Furthermore, the lid opening and locking assembly includes a positioning magnet and an iron block. The positioning magnet is embedded in the center of the rear side of the multi-functional lid, and the iron block is embedded in the center of the rear side of the blood drawing box.

[0010] When the multi-functional box lid flips backward, the side of the lid abuts against the rear end of the control rod, pushing the control rod forward. The control rod, through the vertical rod, pushes the longitudinal slide rod forward along the sliding sleeve. At this time, the telescopic rod gradually shortens, the return spring is gradually compressed, and the guide wheel gradually rolls off the longitudinal slide rod to the corresponding ramp. When the multi-functional box lid flips backward 180 degrees and is fully open, the side of the multi-functional box lid abuts against the rear side of the blood drawing box, and the positioning magnet and the iron block are magnetically attracted together. Since the horizontal width of the three ramps is the same, each test tube in the chamber... All three guide wheels on one side roll to the top platform of the corresponding guide plate. The magnetic attraction of the positioning magnet and the iron block is greater than the return force of the return spring, and the longitudinal slide bar remains stable. At this time, since the height of the three guide plates increases from front to back, the three test tube racks also increase from front to back in a stepped manner. When the three test tube racks move up, they also extend from the top of the test tube receiving cavity, making it easier to pick up the blood drawing tubes. Since the three test tube racks are distributed in a stepped manner, the blood drawing tubes in front and behind will not be blocked, and it is easy to see the labels wrapped and pasted on the top of the test tubes, making it less likely to pick up the wrong one. When closing the multi-functional box lid, it needs to be flipped forward. At this time, the positioning magnet and the iron block disengage, the return spring extends, pushing the telescopic rod to extend, which also causes the longitudinal slide rod to slide backward along the sliding sleeve, driving the guide plate to move backward. The guide wheel begins to slide down from the top platform of the guide plate along the corresponding slope until it stops after contacting the upper side of the longitudinal slide rod. Since the guide wheel, slider and test tube rack lose the support of the slope on the guide plate, they also slide down along the vertical guide groove, finally allowing the top of the test tube rack to retract into the test tube receiving cavity. At this time, it is convenient to transfer the blood drawing box mechanism to the required location. After opening the multi-functional box lid again, the above process is repeated, and the three test tube racks can be distributed in a stepped shape again for convenient use.

[0011] Furthermore, the test tube rack stepped arrangement mechanism also includes rollers and wheel receiving grooves. A wheel receiving groove is provided on the rear side of the blood drawing box corresponding to the rod hole position. A roller is rotatably mounted on the rear end of the control rod. When the side of the multi-functional box lid abuts against the rear end of the control rod, pushing the control rod forward, the frictional force is significant. Therefore, rollers are provided to change the frictional contact between the rear end of the control rod and the side of the multi-functional box lid into a rolling connection, which can reduce friction. However, the rollers affect the side of the multi-functional box lid's contact with the rear side of the blood drawing box. Therefore, wheel receiving grooves are provided so that when the side of the multi-functional box lid abuts against the rear side of the blood drawing box, the rollers retract into the wheel receiving grooves.

[0012] Furthermore, the negative pressure source mechanism includes a negative pressure tank, a negative pressure sensor, a negative pressure maintaining component, and a controller. The negative pressure tank and the negative pressure maintaining component are installed at the bottom of the base housing. The negative pressure maintaining component is connected to the negative pressure tank, and the negative pressure sensor is installed on the negative pressure tank. The controller is installed on the front side of the base housing. The negative pressure maintaining component is used to maintain the negative pressure state inside the negative pressure tank, and the negative pressure sensor is used to monitor the negative pressure state inside the negative pressure tank and transmit the monitored negative pressure state to the controller in the form of an electrical signal. When the negative pressure is insufficient, the controller controls the negative pressure maintaining component to work, so that the negative pressure tank maintains a suitable and stable negative pressure state.

[0013] Furthermore, the blood-drawing negative pressure providing mechanism includes an air flow sensor, an air intake bend, a solenoid valve, a negative pressure hose, a pinch sleeve, an insertion tube, and insertion tube placement components. The opening of the negative pressure tank is connected to two air intake bends, each equipped with an air flow sensor. The end of each air intake bend is connected to one end of the negative pressure hose via a solenoid valve. The negative pressure hose passes through a tube hole at the bottom of the blood-drawing box and extends into the negative pressure tube receiving cavity. The other end of the negative pressure hose is connected to an insertion tube. A pinch sleeve is fitted at the connection between the insertion tube and the negative pressure hose. Two insertion tube placement components are installed within the negative pressure tube receiving cavity. The pinch sleeve facilitates finger gripping and insertion tube operation. The air flow sensor monitors the air flow in the air intake bend and transmits this information as an electrical signal to the controller, allowing the controller to close the solenoid valve at appropriate times to prevent excessive blood draw. When blood drawing is no longer needed, the insertion tube is inserted into the insertion tube placement components for easy retrieval of the pinch sleeve for the next use.

[0014] Furthermore, the rapid blood drawing unit includes a blood drawing tube, a silicone stopper, a dual-channel tube, a blood drawing needle assembly, and a quick-connect cannula assembly. The blood drawing tube is placed on the tube rack, and a silicone stopper is provided on the top of the blood drawing tube. A dual-channel tube is inserted through the silicone stopper. The top of one channel of the dual-channel tube is connected to the blood drawing needle assembly, and the top of the other channel of the dual-channel tube is connected to the quick-connect cannula assembly. The quick-connect cannula assembly is connected to the cannula.

[0015] During blood collection, place the blood collection tube in the test tube holder on the test tube rack. Insert the dual-channel tube through the silicone stopper into the top of the blood collection tube. Connect the quick-connect fitting to the tube. Then, insert the blood collection needle assembly into the patient's vein. Operate the controller, which opens the solenoid valve. Due to the negative pressure inside the negative pressure tank, air from the blood collection tube enters the negative pressure tank through the air pipe in the dual-channel tube, the quick-connect fitting, the tube, the negative pressure hose, and the suction bend. The blood collection tube is then under negative pressure, allowing the patient's venous blood to be drawn through the blood collection needle assembly and the dual-channel tube. The blood collection tube is drawn into the blood collection test tube through the channel tube. The air flow sensor monitors the air flow in the air intake bend. When the air flow reaches the predetermined target, it indicates that the negative pressure in the blood collection test tube is sufficient and the blood collection volume can meet the standard. At this time, the controller controls the solenoid valve to close, pulls out the blood collection needle assembly, separates the quick-connect assembly from the cannula, and pulls the dual-channel tube from the silicone stopper. The blood collection process is then completed, and a tube of venous blood sample is obtained. By using a negative pressure canister to provide negative pressure to the blood collection test tube, the purpose of rapid blood collection can be achieved, which is suitable for high-altitude areas.

[0016] Furthermore, it also includes a blood-drawing tool receiving mechanism, which comprises a transparent partition box, an ultraviolet disinfection lamp, a receiving cover, and a cover locking assembly. The transparent partition box is located in the center of the multi-functional box lid, dividing the interior into two tool chambers. An ultraviolet disinfection lamp is installed inside the transparent partition box. The front and rear sides of the transparent partition box are movably connected to one end of each of the two receiving covers. The other end of each receiving cover is connected to the inner wall of the multi-functional box lid via the cover locking assembly. Blood-drawing tools can be placed in the tool chambers. When the multi-functional box lid is fully opened, it is in a horizontal position. At this time, the receiving cover can be opened using the cover locking assembly to remove rubber tubing, disinfection equipment, and other tools. The receiving cover can then be closed again, and the tools can be placed on it. The multi-functional box lid and receiving cover serve as a tool table. After use, the blood-drawing tools are placed back into the tool chamber, the receiving cover is closed, and then the multi-functional box lid is closed. The ultraviolet disinfection lamp can then be turned on, and the ultraviolet light emitted by the lamp can pass through the transparent partition box to sterilize the tool chamber, test tube receiving chamber, and negative pressure tube receiving chamber.

[0017] Compared with existing technologies, the advantages of this rapid blood drawing device that overcomes negative pressure at high altitudes are: 1. This rapid blood drawing device overcomes the negative pressure of high altitudes. When the multi-functional box lid is flipped 180 degrees backward and fully opened, the side of the multi-functional box lid abuts against the rear of the blood drawing box. The positioning magnet and the iron block are magnetically attracted together. Since the horizontal width of the three ramps is the same, the three guide wheels on each side of the test tube receiving cavity roll to the top platform of the corresponding guide plate. The magnetic attraction force between the positioning magnet and the iron block is greater than the return force of the return spring, and the longitudinal slide rod remains stable. At this time, since the height of the three guide plates increases from front to back, the three test tube racks also increase from front to back in a stepped manner. When the three test tube racks move upward, they all extend from the top of the test tube receiving cavity, making it easier to take out the blood drawing test tubes. Because the three test tube racks are distributed in a stepped manner, the blood drawing test tubes in front and behind will not be obstructed, and the labels wrapped and pasted on the top of the test tubes are easy to see, making it less likely to take the wrong one.

[0018] 2. This rapid blood collection device overcomes the negative pressure at high altitudes. The negative pressure tank provides negative pressure to the blood collection tube, allowing the patient's venous blood to be drawn into the blood collection tube through the blood collection needle assembly and the dual-channel tube. An air flow sensor monitors the air flow in the suction bend. When the air flow reaches the predetermined target, it indicates that the negative pressure in the blood collection tube is sufficient and the blood collection volume is up to standard. At this point, the controller closes the solenoid valve, pulls out the blood collection needle assembly, separates the quick-connect fitting from the cannula, and pulls the dual-channel tube from the silicone stopper, thus completing the blood collection process and obtaining a tube of venous blood sample. By using the negative pressure tank to provide negative pressure to the blood collection tube, rapid blood collection can be achieved, making it suitable for high-altitude areas.

[0019] 3. This rapid blood drawing device overcomes the negative pressure at high altitudes by using a negative pressure tank to provide negative pressure to the blood drawing tubes. This overcomes the problem of slow blood drawing caused by negative pressure at high altitudes, making blood drawing convenient and quick. After opening the multi-functional box lid, the multi-functional box lid, together with the stepped arrangement mechanism of the test tube rack, allows the three test tube racks to be arranged in a stepped shape with the front lower and the back higher, making it easy to see the labels on the blood drawing tubes and preventing interference when taking out the blood drawing tubes. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention; Figure 2 For the present invention Figure 1 A magnified view of the structure at point A in the middle; Figure 3 For the present invention Figure 1 A magnified schematic diagram of the structure at point B in the middle; Figure 4 This is a schematic diagram of the rear structure of the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point C in the middle; Figure 6This is a schematic diagram of the negative pressure source mechanism in the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention; Figure 7 This is a schematic diagram of the internal structure of the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention. Figure 1 ; Figure 8 For the present invention Figure 7 A magnified schematic diagram of the structure at point D in the middle; Figure 9 This is a schematic diagram of the internal structure of the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention. Figure 2 ; Figure 10 For the present invention Figure 9 A magnified schematic diagram of the structure at point E in the middle; Figure 11 For the present invention Figure 9 A magnified schematic diagram of the structure at point F in the middle; Figure 12 This is a schematic diagram of the internal structure of the rapid blood drawing device for overcoming negative pressure at high altitudes according to the present invention. Figure 3 ; In the diagram: 1. Blood drawing box mechanism; 11. Base box; 12. Blood drawing box; 13. Test tube receiving chamber; 14. Negative pressure tube receiving chamber; 15. Hinge; 16. Multifunctional box lid; 17. Locking fixing part; 18. Locking moving part; 19. Hex socket head cap screw; 2. Negative pressure source mechanism; 21. Negative pressure tank; 22. Negative pressure sensor; 23. Negative pressure extraction tube; 24. Exhaust one-way valve; 25. Miniature negative pressure pump; 26. Battery; 27. Controller; 28. Charging port; 3. Blood drawing negative pressure supply mechanism; 31. Air flow sensor; 32. Suction bend; 33. Solenoid valve; 34. Negative pressure hose; 35. Squeezing sleeve; 36. Insertion tube; 37. Positioning sleeve; 38. Bracket; 4. Rapid blood drawing unit; 41. Blood drawing test tube; 42. Silicone stopper; 43. Dual-channel tube; 44. Negative pressure... 45. Vacuum bend, 46. Quick-connect sleeve, 47. Blood drawing bend, 48. Blood drawing tube, 49. Needle handle, 5. Test tube support assembly, 51. Vertical guide groove, 52. Slider, 53. Test tube rack, 6. Test tube rack stepped arrangement mechanism, 61. Vertical slide bar, 62. Sliding sleeve, 63. Guide wheel, 64. Guide plate, 65. Telescopic rod, 66. Return spring, 67. Vertical rod, 68. Control rod, 69. Roller, 610. Wheel receiving groove, 611. Positioning magnet, 612. Iron block, 7. Blood drawing tool receiving mechanism, 71. Transparent partition box, 72. Ultraviolet disinfection lamp, 73. Rotary shaft, 74. Receiving cover plate, 75. Stop bar, 76. Slot, 77. Slide groove, 78. Guide post, 79. Compression spring, 710. Sliding seat, 711. Snap-fit ​​block, 712. Unlocking handle. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Example 1, please refer to Figures 1 to 12 This embodiment provides a technical solution: a rapid blood drawing device for overcoming negative pressure at high altitudes, including a blood drawing box mechanism 1. The blood drawing box mechanism 1 includes a base box 11, a blood drawing box 12, a test tube receiving cavity 13, a negative pressure tube receiving cavity 14, a hinge 15, a multi-functional box cover 16, and hexagonal bolts 19. The top of the base box 11 supports the lower half of the blood drawing box 12. The two sides of the blood drawing box 12 are fixedly connected to the two sides of the base box 11 by hexagonal bolts 19. The test tube receiving cavity 13 is provided on the left side of the blood drawing box 12, and the negative pressure tube receiving cavity 14 is provided on the right side of the blood drawing box 12. The rear side of the top of the blood drawing box 12 is movably connected to the rear bottom of the multi-functional box cover 16 by a hinge 15.

[0023] The blood drawing box mechanism 1 also includes a locking fixing part 17 and a locking movable part 18. The locking movable part 18 is installed on the front side of the multi-functional box cover 16, and the locking fixing part 17 that cooperates with the locking movable part 18 is installed on the top front side of the blood drawing box 12. The locking fixing part 17 and the locking movable part 18 can lock the multi-functional box cover 16, thereby closing the top of the blood drawing box 12.

[0024] It is also equipped with a negative pressure source mechanism 2, a blood drawing negative pressure supply mechanism 3, a rapid blood drawing unit 4, a test tube support assembly 5, and a test tube rack stepped arrangement mechanism 6.

[0025] The negative pressure source mechanism 2 is installed at the bottom of the base box 11, and the negative pressure source mechanism 2 is connected to the blood drawing negative pressure supply mechanism 3.

[0026] The test tube support assembly 5 is installed inside the test tube receiving cavity 13, and a rapid blood drawing unit 4 is provided on the test tube support assembly 5.

[0027] The test tube support assembly 5 includes a vertical guide groove 51, a slider 52, and a test tube rack 53. Three test tube racks 53 are arranged longitudinally at equal intervals in the test tube receiving cavity 13. Each test tube rack 53 has multiple test tube placement positions arranged laterally at equal intervals. The specific number of test tube placement positions can be four. Two sliders 52 are arranged on both sides of each test tube rack 53. Vertical guide grooves 51 are arranged on both sides of the test tube receiving cavity 13 and are slidably connected to the corresponding sliders 52.

[0028] The test tube rack 53 has two horizontal plates, one above the other. The two ends of the two horizontal plates are connected by two vertical rods. The upper horizontal plate has four test tube slots at equal intervals to allow blood collection tubes to pass through. The lower horizontal plate has support slots corresponding to the test tube slots to support the bottom of the blood collection tubes.

[0029] The test tube rack stepped arrangement mechanism 6 is installed inside the test tube receiving cavity 13, and the test tube rack stepped arrangement mechanism 6 is connected to the test tube support assembly 5.

[0030] The test tube rack stepped arrangement mechanism 6 includes a longitudinal slide bar 61, a sliding sleeve 62, a guide wheel 63, a guide plate 64, a lid closing and resetting assembly, a vertical rod 67, a control vertical rod 68, and a lid opening and locking assembly. Each slider 52 has a guide wheel 63 rotatably mounted on its bottom. Sliding sleeves 62 are respectively provided on both sides of the test tube receiving cavity 13. A longitudinal slide bar 61 is slidably connected within the sliding sleeve 62. The upper side of each longitudinal slide bar 61 is rotatably connected to a corresponding guide wheel 63. Three guide plates 64 are installed longitudinally and equidistantly on the upper side of the longitudinal slide bar 61, with each guide plate 64 positioned at a corresponding... Behind the guide wheel 63, the height of the three guide plates 64 increases sequentially from front to back. The front side of the three guide plates 64 is provided with three ramps, the slope of the three ramps increases sequentially from front to back, and the horizontal width of the three ramps is the same. The top of the rear end of the longitudinal slide rod 61 is connected to the front end of the control longitudinal rod 68 through the vertical rod 67. The rear end of the control longitudinal rod 68 passes through the rod hole on the rear side of the top of the blood drawing box 12 and extends to the outside of the blood drawing box 12. The front end of the longitudinal slide rod 61 is connected to the box cover closing reset assembly. The box cover opening locking assembly is installed on the rear side of the top of the blood drawing box 12.

[0031] The lid closing and reset assembly includes a telescopic rod 65 and a reset spring 66. The front end of the longitudinal slide rod 61 is connected to the rear end of the telescopic rod 65, and the front end of the telescopic rod 65 is connected to the front side inside the test tube receiving cavity 13. The reset spring 66 is sleeved on the telescopic rod 65, and the front and rear ends of the reset spring 66 are respectively connected to the front side inside the test tube receiving cavity 13 and the front end of the longitudinal slide rod 61.

[0032] The lid opening and locking assembly includes a positioning magnet 611 and an iron block 612. The positioning magnet 611 is embedded in the center of the rear side of the multi-functional lid 16, and the iron block 612 is embedded in the center of the rear side of the blood drawing box 12.

[0033] When the multi-functional box lid 16 flips backward, the side of the multi-functional box lid 16 abuts against the rear end of the control rod 68, pushing the control rod 68 forward. The control rod 68 pushes the longitudinal slide rod 61 forward along the sliding sleeve 62 via the vertical rod 67. At this time, the telescopic rod 65 gradually shortens, the return spring 66 is gradually compressed, and the guide wheel 63 gradually rolls from the longitudinal slide rod 61 to the corresponding slope. When the multi-functional box lid 16 flips backward 180 degrees and is fully opened, the side of the multi-functional box lid 16 abuts against the rear side of the blood drawing box 12, and the positioning magnet 611 and the iron block 612 are magnetically attracted together. Since the horizontal width of the three slopes is the same, the test tube... The three guide wheels 63 on each side of the receiving cavity 13 roll to the top platform of the corresponding guide plate 64. The magnetic attraction of the positioning magnet 611 and the iron block 612 is greater than the return force of the return spring 66, and the longitudinal slide rod 61 remains stable. At this time, since the height of the three guide plates 64 increases from front to back, the three test tube racks 53 also increase from front to back in a stepped manner. When the three test tube racks 53 move up, they also extend from the top of the test tube receiving cavity 13, making it easier to pick up the blood collection tubes. Since the three test tube racks 53 are distributed in a stepped manner, the blood collection tubes in front and behind will not be blocked, and it is easy to see the labels wrapped and pasted on the top of the test tubes, making it less likely to pick up the wrong one. When closing the multi-functional box lid 16, it needs to be flipped forward. At this time, the positioning magnet 611 and the iron block 612 disengage, the return spring 66 returns to its original position and extends, pushing the telescopic rod 65 to extend, which also causes the longitudinal slide rod 61 to slide backward along the sliding sleeve 62, driving the guide plate 64 to move backward. The guide wheel 63 begins to slide down from the top platform of the guide plate 64 along the corresponding slope until the guide wheel 63 contacts the upper side of the longitudinal slide rod 61 and stops. Since the guide wheel 63, the slider 52 and the test tube rack 53 lose the support of the slope on the guide plate 64, they also slide down along the vertical guide groove 51, finally allowing the top of the test tube rack 53 to retract into the test tube receiving cavity 13. At this time, it is convenient to transfer the blood drawing box mechanism 1 to the required place. After opening the multi-functional box lid 16 again, the above process is followed, and the three test tube racks 53 can be distributed in a stepped shape again, which is convenient to use.

[0034] The test tube rack stepped arrangement mechanism 6 also includes rollers 69 and wheel receiving grooves 610. Wheel receiving grooves 610 are provided on the rear side of the blood collection box 12 at positions corresponding to the rod holes. Rollers 69 are rotatably mounted on the rear end of the control rod 68. When the side of the multi-functional box cover 16 abuts against the rear end of the control rod 68, pushing the control rod 68 forward, the frictional force is significant. Therefore, rollers 69 are provided to change the frictional contact between the rear end of the control rod 68 and the side of the multi-functional box cover 16 into a rolling connection, reducing friction. However, the presence of rollers 69 affects the side of the multi-functional box cover 16 abutting against the rear side of the blood collection box 12. Therefore, wheel receiving grooves 610 are provided so that when the side of the multi-functional box cover 16 abuts against the rear side of the blood collection box 12, the rollers 69 retract precisely into the wheel receiving grooves 610.

[0035] In use, the bottom of the base box 11 is used to house the negative pressure source mechanism 2, the test tube receiving cavity 13 inside the blood drawing box 12 is used to house the test tube support assembly 5, and the negative pressure tube receiving cavity 14 inside the blood drawing box 12 is used to house the blood drawing negative pressure supply mechanism 3. In use, first open the multi-functional box cover 16, then flip the multi-functional box cover 16 backwards 180 degrees. The side of the multi-functional box cover 16 abuts against the rear end of the test tube rack stepped arrangement mechanism 6, allowing the three test tube racks 53 to move upwards with the help of the test tube rack stepped arrangement mechanism 6. The three test tube racks 53 increase in height from front to back in a stepped arrangement. After placing blood collection tubes in the test tube placement positions of the test tube racks 53, they will not be obstructed from the front and back, and are easy to take out. When all the test tube placement positions on a test tube rack 53 are full of blood collection tubes, the test tube rack 53 and the slider 52 can be moved up along the vertical guide groove 51 to remove a test tube rack 53 and a row of blood collection tubes on it. The transfer of the test tube rack 53 and the blood collection tubes is not affected by the stepped arrangement mechanism 6 of the test tube rack. During the blood draw, first place the blood collection tube from the rapid blood collection unit 4 onto the tube rack 53. Then connect the rapid blood collection unit 4 to the negative pressure supply mechanism 3. Insert the blood collection needle from the rapid blood collection unit 4 into the patient's vein. The negative pressure source mechanism 2 will then operate, drawing negative pressure into the blood collection tube from the rapid blood collection unit 4 through the negative pressure supply mechanism 3. Venous blood will then enter the blood collection tube. Once the negative pressure source mechanism 2 stops operating, disconnect the rapid blood collection unit 4 from the negative pressure supply mechanism 3 to complete the blood draw.

[0036] Example 2, please refer to Figures 1 to 12 This embodiment provides a technical solution: a rapid blood drawing device that overcomes the negative pressure at high altitudes. This embodiment is a further explanation of the structure of Embodiment 1. The negative pressure source mechanism 2 includes a negative pressure tank 21, a negative pressure sensor 22, a negative pressure maintaining component, and a controller 27. The negative pressure tank 21 and the negative pressure maintaining component are installed at the bottom of the base housing 11. The negative pressure maintaining component is connected to the negative pressure tank 21. The negative pressure sensor 22 is installed on the negative pressure tank 21. The controller 27 is installed on the front side of the base housing 11.

[0037] The negative pressure maintaining assembly includes a negative pressure extraction pipe 23, an exhaust check valve 24, a miniature negative pressure pump 25, a battery 26, and a charging port 28. The miniature negative pressure pump 25 is installed at the bottom of the base housing 11. The negative pressure tank 21 is connected to the air inlet of the miniature negative pressure pump 25 through the negative pressure extraction pipe 23. The air outlet of the miniature negative pressure pump 25 extends to the outside of the base housing 11. When the miniature negative pressure pump 25 is working, it can draw negative pressure from the negative pressure tank 21 through the negative pressure extraction pipe 23. The negative pressure extraction pipe 23 is connected in series with... An exhaust check valve 24 is provided, which only allows air in the negative pressure extraction pipe 23 to flow to the miniature negative pressure pump 25, thus preventing air backflow in the negative pressure extraction pipe 23 after the miniature negative pressure pump 25 stops. A storage battery 26 is also installed at the bottom of the base housing 11. The storage battery 26 is used to power the miniature negative pressure pump 25 and the controller 27. A charging port 28 is provided on the rear side of the storage battery 26. The charging port 28 passes through the rectangular through hole on the rear side of the base housing 11, and the storage battery 26 can be charged through the charging port 28.

[0038] The negative pressure maintaining component is used to maintain the negative pressure state inside the negative pressure tank 21. The negative pressure sensor 22 is used to monitor the negative pressure state inside the negative pressure tank 21 and transmit the monitored negative pressure state to the controller 27 in the form of an electrical signal. When the negative pressure is insufficient, the controller 27 controls the negative pressure maintaining component to work so that the negative pressure tank 21 maintains a suitable and stable negative pressure state.

[0039] The blood-drawing negative pressure supply mechanism 3 includes an air flow sensor 31, an air intake bend 32, a solenoid valve 33, a negative pressure hose 34, a pinch sleeve 35, an insertion tube 36, and an insertion tube placement assembly. The opening of the negative pressure tank 21 is connected to two air intake bends 32. An air flow sensor 31 is installed on each air intake bend 32. The end of the air intake bend 32 is connected to one end of the negative pressure hose 34 through the solenoid valve 33. The negative pressure hose 34 passes through the tube hole at the bottom of the blood-drawing box 12 and extends into the negative pressure tube receiving cavity 14. The other end of the negative pressure hose 34 is connected to the insertion tube 36. A pinch sleeve 35 is sleeved at the connection between the insertion tube 36 and the negative pressure hose 34. Two insertion tube placement assemblies are installed in the negative pressure tube receiving cavity 14. The output ends of the air flow sensor 31 and the negative pressure sensor 22 are both electrically connected to the input end of the controller 27. The electrical connection method adopts existing technology.

[0040] The cannula placement assembly includes a positioning sleeve 37 and a support 38. Two supports 38 are provided in the negative pressure tube receiving cavity 14, with the positioning sleeve 37 installed in the middle of the support 38. When the blood drawing negative pressure supply mechanism 3 is not in use, the cannula 36 is inserted into the positioning sleeve 37 by pinching the holding sleeve 35, which makes it easy to limit and fix the cannula 36 and make it easy to find and use it quickly next time.

[0041] The pinch sleeve 35 is easy to grip with fingers and facilitates the operation of the cannula 36. The air flow sensor 31 is used to monitor the air flow in the suction bend 32 and transmit the air flow information to the controller 27 in the form of an electrical signal. This allows the controller 27 to control the solenoid valve 33 to close when appropriate, thus preventing excessive blood draw. When blood draw is not needed, the cannula 36 is inserted into the cannula placement component, making it easy to quickly locate the pinch sleeve 35 for the next use.

[0042] The rapid blood drawing unit 4 includes a blood drawing tube 41, a silicone stopper 42, a dual-channel tube 43, a blood drawing needle assembly, and a quick-connect cannula assembly. The blood drawing tube 41 is placed on the tube rack 53. The top of the blood drawing tube 41 is provided with a silicone stopper 42. The dual-channel tube 43 is inserted through the silicone stopper 42. The top of one channel of the dual-channel tube 43 is connected to the blood drawing needle assembly, and the top of the other channel of the dual-channel tube 43 is connected to the quick-connect cannula assembly. The quick-connect cannula assembly is connected to the cannula 36.

[0043] The dual-channel tube 43 has two channels: an air channel and a suction tube channel. The quick-connect assembly for intubation includes a negative pressure vacuum bend 44 and a quick-connect sleeve 45. The top of the air duct of the dual-channel pipe 43 is connected to the bottom of the negative pressure vacuum bend 44. The top of the negative pressure vacuum bend 44 is provided with a quick-connect sleeve 45, which is connected to the intubation tube 36. When not needed, the intubation tube 36 can be detached from the quick-connect sleeve 45.

[0044] The blood collection needle assembly includes a blood collection bend 46, a blood collection tube 47, a blood collection needle 48, and a needle handle 49. The top of the blood collection channel of the dual-channel tube 43 is connected to one end of the blood collection bend 46, and the other end of the blood collection bend 46 is connected to one end of the blood collection tube 47. The other end of the blood collection tube 47 is connected to the blood collection needle 48. A needle handle 49 is provided at the end of the blood collection needle 48 near the blood collection tube 47. The needle handle 49 facilitates the operator's control of the blood collection needle 48 to puncture the patient's vein. Venous blood can enter the blood collection test tube 41 through the blood collection needle 48, the blood collection tube 47, the blood collection bend 46, and the blood collection channel.

[0045] During blood collection, place the blood collection tube 41 on the test tube rack 53. Insert the dual-channel tube 43 through the silicone stopper 42 into the top of the blood collection tube 41. Connect the quick-connect fitting to the cannula 36. Then, insert the blood collection needle assembly into the patient's vein. Operate the controller 27, which opens the solenoid valve 33. Due to the negative pressure in the negative pressure tank 21, air in the blood collection tube 41 enters the negative pressure tank 21 through the air pipe in the dual-channel tube 43, the quick-connect fitting, the cannula 36, ​​the negative pressure hose 34, and the suction bend 32. The blood collection tube 41 is then under negative pressure, allowing the patient's venous blood to be drawn through the blood collection needle. The blood collection tube 41 is drawn into the blood collection tube 41 through the component and the dual-channel tube 43. The air flow sensor 31 monitors the air flow in the air intake bend 32. When the air flow reaches the predetermined target, it also indicates that the negative pressure in the blood collection tube 41 is sufficient and the blood collection volume in the blood collection tube 41 can meet the standard. At this time, the controller 27 controls the solenoid valve 33 to close, pull out the blood collection needle assembly, separate the quick-connect assembly from the insertion tube 36, and pull out the dual-channel tube 43 from the silicone stopper 42. The blood collection work can then be completed, and a tube of venous blood sample can be obtained. With the help of the negative pressure tank 21 to provide negative pressure to the blood collection tube 41, the purpose of rapid blood collection can be achieved, which is suitable for high-altitude areas.

[0046] Example 3, please refer to Figures 1 to 12 This embodiment provides a technical solution: a rapid blood drawing device that overcomes the negative pressure at high altitudes. This embodiment is structurally similar to Embodiment 2, with the difference being: To facilitate the storage of blood-drawing tools and the sterilization of the inside of the blood-drawing device, a blood-drawing tool receiving mechanism 7 is also provided. The blood-drawing tool receiving mechanism 7 includes a transparent partition box 71, an ultraviolet disinfection lamp 72, a rotating shaft 73, a receiving cover plate 74, and a cover plate locking assembly. The transparent partition box 71 is provided in the middle of the multi-functional box cover 16. The transparent partition box 71 divides the inside of the multi-functional box cover 16 into two tool chambers, front and rear. An ultraviolet disinfection lamp 72 is installed inside the transparent partition box 71. The front and rear sides of the transparent partition box 71 are respectively movably connected to one end of the two receiving cover plates 74 through the rotating shaft 73. The other end of the receiving cover plate 74 is connected to the inner wall of the multi-functional box cover 16 through the cover plate locking assembly.

[0047] The blood drawing tool receiving mechanism 7 also includes a baffle 75. The baffle 75 is provided on the side of the tool cavity away from the transparent partition box 71. When the receiving cover 74 closes the opening of the tool cavity, the baffle 75 is located inside the end of the receiving cover 74 and is used to hold the receiving cover 74 in place to prevent the receiving cover 74 from continuing to flip into the tool cavity.

[0048] The cover locking assembly includes a slot 76, a slide 77, a guide post 78, a compression spring 79, a sliding seat 710, a locking block 711, and an unlocking handle 712. A longitudinal slide 77 is formed in the middle of the side of the cover 74 away from the transparent partition box 71. The sliding seat 710 is slidably connected within the slide 77. A guide post 78 is fixedly connected in the middle of the slide 77, passing through a post hole on the sliding seat 710. A compression spring 79 is sleeved on the end of the guide post 78 near the transparent partition box 71. An unlocking handle 712 is installed at the end of the sliding seat 710. A locking block 711 is provided on the side of the sliding seat 710 away from the transparent partition box 71. The tool cavity is located away from the transparent partition box 71. One side of the 1 has a slot 76 that corresponds to the locking block 711. When the receiving cover 74 closes the tool cavity opening, the compression spring 79 pushes the sliding seat 710 away from the transparent partition box 71 along the sliding groove 77, thereby pushing the end of the locking block 711 into the slot 76, realizing the locking of the locking block 711 and the slot 76, thus locking the receiving cover 74 and preventing the tool from falling out of the tool cavity. When it is necessary to open the receiving cover 74 to take out the tool, the sliding seat 710 is pushed close to the transparent partition box 71 by using the unlocking handle 712. At this time, the compression spring 79 is compressed, the locking block 711 is disengaged from the slot 76, and the receiving cover 74 can be opened by using the unlocking handle 712.

[0049] The tools used for blood drawing can be placed in the tool chamber. When the multi-functional box cover 16 is fully opened, the multi-functional box cover 16 is in a horizontal position. At this time, the receiving cover 74 can be opened through the cover locking component to take out the rubber tube, sterilization tools and other tools. Then close the receiving cover 74 again. The tools can be placed on the receiving cover 74. The multi-functional box cover 16 and the receiving cover 74 are used as a tool table. After use, put the blood drawing tools back into the tool chamber, close the receiving cover 74, and then close the multi-functional box cover 16. At this time, the ultraviolet disinfection lamp 72 can be turned on. The ultraviolet light emitted by the ultraviolet disinfection lamp 72 can pass through the transparent partition box 71 to sterilize and disinfect the tool chamber, test tube receiving chamber 13 and negative pressure tube receiving chamber 14.

[0050] It is worth noting that the controller 27 disclosed in the above embodiments is a PLC controller. The output terminal of the controller 27 is electrically connected to the input terminal of the miniature negative pressure pump 25, the solenoid valve 33, and the ultraviolet disinfection lamp 72. The controller 27 controls the operation of the miniature negative pressure pump 25, the solenoid valve 33, and the ultraviolet disinfection lamp 72 using methods commonly used in the prior art.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid blood drawing device for overcoming negative pressure at high altitudes, comprising a blood drawing box mechanism (1), wherein the blood drawing box mechanism (1) includes a base box (11), the top of which supports the lower half of a blood drawing box (12), a test tube receiving cavity (13) is provided on the left side of the blood drawing box (12), and a negative pressure tube receiving cavity (14) is provided on the right side of the blood drawing box (12), and a multifunctional box cover (16) is movably connected to the rear top of the blood drawing box (12), characterized in that, Also includes: The negative pressure source mechanism (2) is installed at the bottom of the base box (11), and the negative pressure source mechanism (2) is connected to the blood drawing negative pressure supply mechanism (3). The test tube support assembly (5) is installed in the test tube cavity (13), and a rapid blood collection unit (4) is provided on the test tube support assembly (5). The test tube rack stepped arrangement mechanism (6) is installed in the test tube receiving cavity (13), and the test tube rack stepped arrangement mechanism (6) is connected to the test tube support assembly (5).

2. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 1, characterized in that: The test tube support assembly (5) includes a vertical guide groove (51), a slider (52) and a test tube rack (53). Three test tube racks (53) are arranged longitudinally at equal intervals in the test tube receiving cavity (13). Two sliders (52) are arranged on both sides of each test tube rack (53). Vertical guide grooves (51) that are slidably connected to the corresponding sliders (52) are arranged on both sides of the test tube receiving cavity (13).

3. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 1, characterized in that: The test tube rack stepped arrangement mechanism (6) includes a longitudinal slide rod (61), and a guide wheel (63) is rotatably installed at the bottom of each slider (52). Sliding sleeves (62) are respectively provided on both sides of the test tube receiving cavity (13). The longitudinal slide rod (61) is slidably connected inside the sliding sleeve (62). The upper side of each longitudinal slide rod (61) is tumbledly connected to the corresponding guide wheel (63). Three guide plates (64) are installed longitudinally at equal distances on the upper side of the longitudinal slide rod (61). The three guide plates (64) are respectively located behind the corresponding guide wheel (63), and the three guide plates (64) are... The height increases from front to back. Three ramps are provided on the front side of the three guide plates (64). The slope of the three ramps increases from front to back, and the horizontal width of the three ramps is the same. The top of the rear end of the longitudinal slide rod (61) is connected to the front end of the control longitudinal rod (68) through the vertical rod (67). The rear end of the control longitudinal rod (68) passes through the rod hole on the rear side of the top of the blood collection box (12) and extends to the outside of the blood collection box (12). The front end of the longitudinal slide rod (61) is connected to the box cover closing and reset assembly. The box cover opening and locking assembly is installed on the rear side of the top of the blood collection box (12).

4. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 3, characterized in that: The lid closing and reset assembly includes a telescopic rod (65) and a reset spring (66). The front end of the longitudinal slide rod (61) is connected to the rear end of the telescopic rod (65), the front end of the telescopic rod (65) is connected to the front side inside the test tube receiving cavity (13), and the reset spring (66) is sleeved on the telescopic rod (65).

5. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 3, characterized in that: The box cover opening and locking assembly includes a positioning magnetic block (611) and an iron block (612). The positioning magnetic block (611) is embedded in the middle of the rear side of the multi-functional box cover (16), and the iron block (612) is embedded in the middle of the rear side of the blood drawing box (12).

6. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 3, characterized in that: The test tube rack stepped arrangement mechanism (6) also includes rollers (69) and wheel receiving grooves (610). The wheel receiving grooves (610) are opened on the rear side of the blood collection box (12) at the position corresponding to the rod hole. The rear end of the control rod (68) is rotatably mounted with rollers (69).

7. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 2, characterized in that: The negative pressure source mechanism (2) includes a negative pressure tank (21), a negative pressure sensor (22), a negative pressure maintenance component and a controller (27). The negative pressure tank (21) and the negative pressure maintenance component are installed at the bottom of the base box (11). The negative pressure maintenance component is connected to the negative pressure tank (21). The negative pressure sensor (22) is installed on the negative pressure tank (21). The controller (27) is installed on the front side of the base box (11).

8. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 7, characterized in that: The blood-drawing negative pressure providing mechanism (3) includes an air flow sensor (31), an air intake bend (32), a solenoid valve (33), a negative pressure hose (34), a pinch sleeve (35), an insertion tube (36), and an insertion tube placement assembly. The mouth of the negative pressure tank (21) is connected to two air intake bends (32), and an air flow sensor (31) is installed on each air intake bend (32). The end of the air intake bend (32) is connected to one end of the negative pressure hose (34) through the solenoid valve (33). The negative pressure hose (34) passes through the tube hole at the bottom of the blood-drawing box (12) and extends into the negative pressure tube receiving cavity (14). The other end of the negative pressure hose (34) is connected to the insertion tube (36). A pinch sleeve (35) is sleeved at the connection between the insertion tube (36) and the negative pressure hose (34). Two insertion tube placement assemblies are installed in the negative pressure tube receiving cavity (14).

9. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 8, characterized in that: The rapid blood drawing unit (4) includes a blood drawing tube (41), a silicone stopper (42), a dual-channel tube (43), a blood drawing needle assembly, and a quick-connect cannula assembly. The blood drawing tube (41) is placed on the tube rack (53). A silicone stopper (42) is provided on the top of the blood drawing tube (41). A dual-channel tube (43) is inserted through the silicone stopper (42). The top of one channel of the dual-channel tube (43) is connected to the blood drawing needle assembly, and the top of the other channel of the dual-channel tube (43) is connected to the quick-connect cannula assembly.

10. The rapid blood drawing device for overcoming negative pressure at high altitudes according to claim 1, characterized in that: It also includes a blood-drawing tool receiving mechanism (7), which includes a transparent partition box (71), an ultraviolet disinfection lamp (72), a receiving cover plate (74) and a cover plate locking assembly. The transparent partition box (71) is provided in the middle of the multi-functional box cover (16). The transparent partition box (71) divides the inside of the multi-functional box cover (16) into two tool cavities, and an ultraviolet disinfection lamp (72) is installed inside the transparent partition box (71). The front and rear sides of the transparent partition box (71) are respectively movably connected to one end of the two receiving cover plates (74). The other end of the receiving cover plate (74) is connected to the inner wall of the multi-functional box cover (16) through the cover plate locking assembly.

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