Hematopoietic stem cell separator

Abstract

The invention belongs to the technical field of medical equipment, and discloses a hematopoietic stem cell separator. Comprising a separator body and a separation chamber, a centrifugal machine is installed in the separation chamber, a motor used for driving the centrifugal machine to rotate is installed at the bottom end of the centrifugal machine, a container tank is installed at the top end of the centrifugal machine, and a protection cover is slidably connected to the top end of the separation chamber. According to the device, through the structural design of the reset mechanism and the dust removal mechanism, the movement of the protective cover and the clamping action of the clamping plate on the container cover cap are integrated, in the moving process of the protective cover, the dust removal mechanism can be driven to blow air in the clamping plate to the container cover cap, particulate matter is prevented from being attached, and under the action of the reset mechanism, the dust removal effect is improved. The automatic resetting function of the clamping plates is achieved, the traditional preparation process before high-speed rotation is simplified, and the risks of container tank toppling and blood leakage caused by human negligence are fundamentally eliminated.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and more specifically, to a hematopoietic stem cell separator. Background Art

[0002] Hematopoietic stem cell separator is an important technical equipment in the field of modern medicine. Its birth and development are due to the in-depth research and exploration of blood and its components. The core of this technology lies in the efficient and safe separation and extraction of hematopoietic stem cells, which provides strong support for the treatment of various blood diseases.

[0003] Existing hematopoietic stem cell separators are mostly composed of a separation chamber, a centrifuge, a clamping module, a protective cover and a container tank. The working principle is as follows: first, open the protective cover on the top of the separation chamber, place the container tank on the centrifuge, and use the clamping module to clamp and limit the top cap of the container tank, thereby limiting the position of the container tank. Then, close the protective cover, and the cap and the container tank are in a rotationally connected state. Then, extract the patient's blood into the container tank, start the separator, and the separator rotates at high speed through the centrifuge. Inside the container tank, the blood sample rich in hematopoietic stem cells is stratified and separated under the combined action of gravity and speed. In this process, hematopoietic stem cells can be effectively extracted, and the remaining blood components are returned to the patient through a specific pipeline system, ensuring the safety and effectiveness of the treatment process.

[0004] The current preparation process for the centrifuge container tank before high-speed rotation is relatively complicated, including opening the protective cover, clamping the module to fix the cap and closing the protective cover. This increases the operation time and the risk of error. The cumbersome operation steps not only reduce work efficiency, but may also cause the container tank to tip over when the staff is negligent, leading to safety issues such as blood leakage. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a hematopoietic stem cell separator.

[0006] To achieve the above object, the present invention provides the following technical solution: a hematopoietic stem cell separator, comprising a separator body and a separation chamber, wherein a centrifuge is installed inside the separation chamber, a motor for driving the centrifuge to rotate is installed at the bottom of the centrifuge, a container tank is installed at the top of the centrifuge, a protective cover is slidably connected to the top of the separation chamber, and further comprising:

[0007] A pair of clamps is provided, and the pair of clamps are respectively arranged on both sides of the container tank, the ends of the pair of clamps facing away from the container tank are fixedly connected with a connecting rod, the ends of the connecting rod away from the clamps are fixedly connected with a square rod, the outer side of the square rod is slidably connected with a limiting tube, a spring is fixedly connected between the inside of the limiting tube and the square rod, and the end of the limiting tube away from the square rod is fixedly connected with a triangular block;

[0008] A reset mechanism, which is arranged on the periphery of the limit tube and is used for resetting the splint after it moves;

[0009] The piston rod is fixedly connected to the bottom end of the triangular block. A dust removal mechanism is arranged on the periphery of the piston rod. The dust removal mechanism is used to blow air from the inside of the hole to the outside of the container tank. The dust removal mechanism includes multiple groups of holes, and the multiple groups of holes are all opened on the outside of the splint.

[0010] Furthermore, the reset mechanism includes a fixed plate, a pair of limiting rods 1, a concave plate and a spring 2, the fixed plate is fixedly connected to the outer side of the limiting tube, the pair of limiting rods 1 both pass through the fixed plate, the concave plate is fixedly connected to the top of the separation chamber, the end of the concave plate facing away from the clamping plate is fixedly connected to the pair of limiting rods 1, the spring 2 is respectively sleeved on the outer side of the pair of limiting rods 1, and the two ends of the spring 2 are respectively fixedly connected to the concave plate and the fixed plate.

[0011] Furthermore, the dust removal mechanism also includes a pressure tube, a piston plate and a pair of air pipes. The pressure tube is fixedly connected to the end of the concave plate away from the splint, and the piston plate is fixedly connected to the end of the piston rod away from the triangular block. The piston plate is adapted to the internal size of the pressure tube, and the pair of air pipes are both fixedly connected to the interior of the pressure tube, and the end of the pair of air pipes away from the pressure tube is fixedly connected to the interior of the splint.

[0012] Furthermore, a deceleration rod is attached to the top of the centrifuge, a fixing rod is fixed to the top of the deceleration rod, a connecting plate is fixed to the inner wall of the separation chamber, the fixing rod passes through the connecting plate, a rack is fixed to the inner top of the protective cover, and a pulling mechanism cooperating with the rack is provided at the top of the separation chamber, and the pulling mechanism is used to pull the deceleration rod upward.

[0013] Furthermore, the pulling mechanism includes a pair of support plates, a rotating stick, a nylon rope, a guide wheel and a spur gear. The pair of support plates are fixedly connected to the top of the separation chamber, both ends of the rotating stick pass through the support plates, the nylon rope is fixedly connected to the outer side of the rotating stick, the end of the nylon rope away from the rotating stick is fixedly connected to the top of the fixed rod, the guide wheel is fixedly connected to the top of the separation chamber, and the guide wheel is in contact with the outer side of the nylon rope, and the spur gear is fixedly connected to the outer side of the rotating stick.

[0014] Furthermore, a spring three is sleeved on the outer side of the fixing rod, and two ends of the spring three are respectively fixedly connected to the deceleration rod and the connecting plate.

[0015] Furthermore, a baffle is provided on the periphery of the protective cover, the top end of the baffle is fixedly connected to a top plate, a pair of limit plates are slidably connected inside the top plate, the bottom ends of the pair of limit plates are fixedly connected to the protective cover, a pair of springs are sleeved on the outer sides of the limit plates, the two ends of the springs are respectively fixedly connected to the top plate and the protective cover, a magnetic plate one is fixedly connected to the outer side of the baffle, a magnetic plate two is fixedly connected to the top of the separation chamber, and the magnetic plate one and the magnetic plate two are attracted to each other by opposite poles.

[0016] The technical effects and advantages of the hematopoietic stem cell separator of the present invention are as follows:

[0017] (1) The present invention integrates the movement of the protective cover and the clamping action of the splint on the container can cap through the structural design of the reset mechanism and the dust removal mechanism. In the process of the movement of the protective cover, not only can the dust removal mechanism be driven to blow the air inside the splint toward the container can cap to prevent the adhesion of particulate matter, but the splint can also be automatically reset under the action of the reset mechanism, thereby simplifying the traditional high-speed rotation preparation process and fundamentally eliminating the risk of container can tipping over and blood leakage due to human negligence.

[0018] (2) When the centrifuge stops rotating, the protective cover will reset and drive the rack to disengage from the control of the pulling mechanism. The deceleration rod will fit with the centrifuge under the action of gravity, and the friction will be used to quickly eliminate the inertial rotation force of the centrifuge. This design not only simplifies the traditional process of waiting for the inertial rotation to stop after shutdown, but also significantly improves work efficiency. At the same time, it ensures the safety of the operator and avoids hand injuries caused by directly removing the rotating container.

[0019] (3) The present invention realizes the linkage function of the movement of the protective cover and the automatic lifting of the baffle through the structural design of the magnetic attraction plate 1, the magnetic attraction plate 2 and the spring. When the protective cover moves to the extreme position, the magnetic attraction plate 1 and the magnetic attraction plate 2 attract each other and drive the baffle and the top plate to move down, sealing the exposed position of the protective cover to form a sealed environment. This design not only effectively reduces the noise during the rotation of the centrifuge, but also prevents people from accidentally touching the container tank, thereby improving operational safety. After the protective cover is reset, the spring releases potential energy to push the baffle to automatically reset, thereby simplifying the operating process and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 It is a schematic cross-sectional view of the separation chamber in the present invention.

[0022] Figure 3 It is a schematic diagram of the local structure in the present invention.

[0023] Figure 4It is a schematic diagram of the explosion of the container tank and the centrifuge in the present invention.

[0024] Figure 5 It is a schematic diagram of the structure of the reset mechanism in the present invention.

[0025] Figure 6 It is a schematic cross-sectional view of the pressure pipe and the clamping plate in the present invention.

[0026] Figure 7 It is a schematic diagram of the piston plate and air pipe structure in the present invention.

[0027] Figure 8 It is a cross-sectional schematic diagram of the protective cover in the present invention.

[0028] Fig. 9 It is a schematic diagram of the pulling mechanism structure in the present invention.

[0029] Fig.10 It is a schematic diagram of the structure of magnetic attraction plate 1 and magnetic attraction plate 2 in the present invention.

[0030] Fig.11 It is a schematic diagram of the structure of limiter 2 and spring 4 in the present invention.

[0031] In the figure:

[0032] 1. Separator body; 2. Separation chamber; 3. Centrifuge; 4. Protective cover; 5. Clamp; 6. Connecting rod; 7. Square rod; 8. Limiting tube; 9. Spring one; 10. Triangular block; 11. Piston rod; 12. Fixed plate; 13. Limiting rod one; 14. Concave plate; 15. Spring two; 16. Pressure tube; 17. Piston plate; 18. Air pipe; 19. Hole; 20. Speed ​​reduction rod; 21. Fixed rod; 22. Connecting plate; 23. Rack; 24. Support plate; 25. Rotating rod; 26. Nylon rope; 27. Guide wheel; 28. Spur gear; 29. ​​Spring three; 30. Baffle; 31. Top plate; 32. Limiting rod two; 33. Spring four; 34. Magnetic plate one; 35. Magnetic plate two. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1 - Figure 7As shown, a hematopoietic stem cell separator comprises a separator body 1 and a separation chamber 2, wherein a centrifuge 3 is installed inside the separation chamber 2, a motor for driving the centrifuge 3 to rotate is installed at the bottom of the centrifuge 3, a container tank is installed at the top of the centrifuge 3, a protective cover 4 is slidably connected to the top of the separation chamber 2, and further comprises:

[0035] A pair of clamping plates 5 are provided, and the pair of clamping plates 5 are respectively provided on both sides of the container tank, and the ends of the pair of clamping plates 5 facing away from the container tank are fixedly connected to a connecting rod 6, and the ends of the connecting rod 6 away from the clamping plates 5 are fixedly connected to a square rod 7, and the outer side of the square rod 7 is slidably connected to a limiting tube 8, and a spring 9 is fixedly connected between the inside of the limiting tube 8 and the square rod 7, and the end of the limiting tube 8 away from the square rod 7 is fixedly connected to a triangular block 10;

[0036] A reset mechanism, which is arranged on the periphery of the limiting tube 8 and is used for resetting the clamping plate 5 after it moves;

[0037] The piston rod 11 is fixedly connected to the bottom end of the triangular block 10 . A dust removal mechanism is arranged on the periphery of the piston rod 11 . The dust removal mechanism is used to blow air from the inside of the hole 19 to the outside of the container tank. The dust removal mechanism includes a plurality of groups of holes 19 , and the plurality of groups of holes 19 are all opened on the outside of the splint 5 .

[0038] The current preparation process of the container tank before high-speed rotation is relatively complicated, including opening the protective cover 4, fixing the cap of the container tank with the clamping module, and closing the protective cover 4, which increases the operation time and the risk of error. The cumbersome operation steps not only reduce the work efficiency, but also may cause the container tank to tip over when the staff is negligent, thereby causing safety problems such as blood leakage. When the embodiment of the present invention is used, the container tank is first placed on the surface of the centrifuge 3 (the centrifuge 3 is a conventional technology in the existing stem cell separation machine, and the technology is mature. It is mainly used to drive the container tank to rotate at high speed, and no further explanation is given), and the blood is sucked into the interior of the container tank, and then the protective cover 4 is moved to prevent people from accidentally touching the container tank. During the movement of the protective cover 4, it will squeeze the inclined surfaces of a pair of triangular blocks 10. The triangular blocks 10 will be forced to drive the limiting tube 8 to move toward the splint 5 together. When the triangular block 10 moves, the triangular block 10 will synchronously drive the piston rod 11 to move. The movement of the piston rod 11 will drive the dust removal mechanism to operate. At this time, the dust removal mechanism removes the air inside the splint 5 through The plurality of groups of holes 19 blow toward the surface of the cap, thereby avoiding the presence of dust particles at the contact point between the cap and the clamping plate 5, and preventing the dust particles from affecting the clamping effect. When the limiting tube 8 moves, the reset mechanism will be driven to operate. At this time, the reset mechanism will be deformed and displaced to provide a moving space for the limiting tube 8. When the limiting tube 8 moves, the square rod 7 will be driven to move through the spring 19. At this time, the movement of the square rod 7 will drive the clamping plate 5 to move through the connecting rod 6. The movement of the clamping plate 5 will clamp and limit the cap on the top of the container tank. With the continuous movement of the triangular block 10, when the clamping plate 5 has clamped the cap, the spring 19 will be deformed to cooperate with the continued movement of the triangular block 10 to provide it with a moving space. Finally, after the protective cover 4 completely covers the container tank, a pair of clamping plates 5 have also been in a clamping state for the cap on the top of the container tank. Through the above-mentioned structural design, the movement of the protective cover 4 and the clamping of the cap are synchronized, which simplifies the working steps, improves the working time, avoids forgetting to clamp the cap, and improves the safety during work.

[0039] like Figure 3 , Figure 4 and Figure 5 As shown, the reset mechanism includes a fixed plate 12, a pair of limiting rods 13, a concave plate 14 and a spring 15. The fixed plate 12 is fixedly connected to the outer side of the limiting tube 8, the pair of limiting rods 13 both penetrate the fixed plate 12, the concave plate 14 is fixedly connected to the top of the separation chamber 2, and the ends of the concave plate 14 facing away from the clamping plate 5 are fixedly connected to the pair of limiting rods 13, the spring 15 is respectively sleeved on the outer side of the pair of limiting rods 13, and the two ends of the spring 15 are respectively fixedly connected to the concave plate 14 and the fixed plate 12.

[0040] When the protective cover 4 squeezes the triangular block 10 to drive the limiting tube 8 to move, it will drive the fixed plate 12 to move along the outer side of the limiting rod 13, and the fixed plate 12 will squeeze the spring 2 15 when moving, causing the spring 2 15 to deform and generate elastic potential energy. It should be noted that the elastic potential energy generated by a pair of springs 2 15 is smaller than the elastic potential energy of spring 1 9. After the protective cover 4 stops squeezing the triangular block 10, the force on the spring 2 15 stops and the elastic potential energy is released, pushing the limiting tube 8 to reset through the fixed plate 12, and the limiting tube 8 is reset, thereby driving the triangular block 10 to reset.

[0041] like Figure 6 and Figure 7 As shown, the dust removal mechanism also includes a pressure tube 16, a piston plate 17 and a pair of air tubes 18. The pressure tube 16 is fixedly connected to the end of the concave plate 14 away from the splint 5. The piston plate 17 is fixedly connected to the end of the piston rod 11 away from the triangular block 10, and the piston plate 17 is adapted to the internal size of the pressure tube 16. The pair of air tubes 18 are both fixedly connected to the interior of the pressure tube 16, and the end of the pair of air tubes 18 away from the pressure tube 16 is fixedly connected to the interior of the splint 5.

[0042] When the triangular block 10 drives the piston rod 11 to move, the piston rod 11 will drive the piston plate 17 to move inside the pressure tube 16, and the movement of the piston plate 17 will squeeze the internal air of the pressure tube 16, thereby increasing the internal air pressure of the pressure tube 16, and allowing the air to enter the interior of the splint 5 through a pair of air pipes 18, and then from the interior of the splint 5, through multiple groups of holes 19, blow toward the top cap of the container tank, blowing away the dust particles attached to the outside of the cap.

[0043] like Figure 8 and Fig. 9 As shown, a deceleration rod 20 is attached to the top of the centrifuge 3, a fixing rod 21 is fixed to the top of the deceleration rod 20, a connecting plate 22 is fixed to the inner wall of the separation chamber 2, the fixing rod 21 passes through the connecting plate 22, a rack 23 is fixed to the top of the inner side of the protective cover 4, and a pulling mechanism matched with the rack 23 is provided at the top of the separation chamber 2, and the pulling mechanism is used to pull the deceleration rod 20 upward.

[0044] When the centrifuge 3 has finished separating the container tank at the top, the protective cover 4 is opened to remove the container tank. Under the action of inertia, the centrifuge 3 may drive the container tank to remain in a rotating state. At this time, directly removing the container tank may cause damage to the hand due to the friction between the rotation of the container tank and the hand. Therefore, it is necessary to wait for the centrifuge 3 to finish rotating, which increases the working time. When the embodiment of the present invention is in use, in the initial state, the deceleration rod 20 is in contact with the top of the centrifuge 3, and when the protective cover 4 moves toward the direction of the centrifuge 3, the protective cover 4 will drive the rack 23 to move, and after the rack 23 moves to a certain distance, the rack 23 will drive the pulling mechanism to operate, and the operation of the pulling mechanism will drive the fixing rod 21 to move upward along the inside of the connecting plate 22, and the upward movement of the fixing rod 21 will drive the deceleration rod 20 to move upward along the inside of the connecting plate 22. The speed reducing rod 20 is separated from the fit with the centrifuge 3. Finally, when the protective cover 4 completely protects the container tank, the pulling mechanism is stationary, and the speed reducing rod 20 is synchronously stationary. At this time, the centrifuge 3 can rotate normally. After the centrifuge 3 finishes rotating, the centrifuge 3 will be closed and the protective cover 4 will be reset. When the protective cover 4 is reset, the rack 23 will reset a certain distance, and the rack 23 will end the control of the pulling mechanism. The speed reducing rod 20 and the fixed rod 21 will move down and reset under the action of gravity. When the speed reducing rod 20 moves down and resets, it fits with the centrifuge 3 again. The friction force generated between the speed reducing rod 20 and the centrifuge 3 can make the rotational force of the centrifuge 3 under the action of inertia disappear quickly, thereby reducing the time required for inertial rotation after waiting for the centrifuge 3 to stop, thereby improving work efficiency.

[0045] like Figure 8 and Fig. 9 As shown, the pulling mechanism includes a pair of support plates 24, a rotating rod 25, a nylon rope 26, a guide wheel 27 and a spur gear 28. The pair of support plates 24 are fixedly connected to the top of the separation chamber 2, and both ends of the rotating rod 25 pass through the support plates 24. The nylon rope 26 is fixedly connected to the outer side of the rotating rod 25, and the end of the nylon rope 26 away from the rotating rod 25 is fixedly connected to the top of the fixed rod 21. The guide wheel 27 is fixedly connected to the top of the separation chamber 2, and the guide wheel 27 is in contact with the outer side of the nylon rope 26, and the spur gear 28 is fixedly connected to the outer side of the rotating rod 25.

[0046] When the rack 23 moves a certain distance, the rack 23 will mesh with the spur gear 28, and the rack 23 will drive the spur gear 28 to rotate, and the rotation of the spur gear 28 will drive the rotating rod 25 to rotate, and the rotating rod 25 will rotate and pull the nylon rope 26, so that the nylon rope 26 is wrapped around the outside of the rotating rod 25, and the nylon rope 26 will be pulled by the force to move the fixed rod 21 upward, and the setting of the guide wheel 27 can guide the nylon rope 26, and the fixed rod 21 moves upward to drive the deceleration rod 20 out of the fit with the centrifuge 3, and the centrifuge 3 can rotate normally. It should be noted that the protective cover 4 moves to the limit distance When the rack 23 is reset, the rack 23 will be out of mesh with the spur gear 28, and the deceleration rod 20 and the fixed rod 21 will fall freely under the action of gravity. The falling of the fixed rod 21 will pull the nylon rope 26, and the nylon rope 26 will be forced to drive the rotating rod 25 to reverse. The deceleration rod 20 will fall and finally fit with the centrifuge 3 again, thereby generating friction with the inertially rotating centrifuge 3, so that the centrifuge 3 stops rotating quickly. It should be noted that the weight of the deceleration rod 20 and the fixed rod 21 is sufficient to support the force required for the rotation of the rotating rod 25 and the spur gear 28.

[0047] like Figure 8 and Fig. 9 As shown, a spring three 29 is sleeved on the outer side of the fixing rod 21, and two ends of the spring three 29 are fixedly connected to the deceleration rod 20 and the connecting plate 22 respectively.

[0048] In order to increase the descending speed of the deceleration rod 20 and increase the friction between the deceleration rod 20 and the centrifuge 3, when the deceleration rod 20 moves up, the spring three 29 will be squeezed to deform the spring three 29 and generate elastic potential energy. When the deceleration rod 20 finishes moving up, the spring three 29 instantly releases the elastic potential energy and instantly pushes the deceleration rod 20 to reset, so that it quickly contacts the centrifuge 3. With the elastic potential energy of the spring three 29, the friction between the deceleration rod 20 and the centrifuge 3 is also increased to a certain extent.

[0049] like Fig.10 and Fig.11 As shown, a baffle 30 is provided on the periphery of the protective cover 4, and a top plate 31 is fixedly connected to the top of the baffle 30, and a pair of limit plates 32 are slidably connected inside the top plate 31, and the bottom ends of the limit plates 32 are fixedly connected to the protective cover 4, and a spring 4 is sleeved on the outer side of the limit plates 32, and the two ends of the spring 4 33 are respectively fixedly connected to the top plate 31 and the protective cover 4, and a magnetic plate 1 34 is fixedly connected to the outer side of the baffle 30, and a magnetic plate 2 35 is fixedly connected to the top of the separation chamber 2, and the magnetic plate 1 34 and the magnetic plate 2 35 are attracted to each other by opposite sexes.

[0050] In the initial state, the baffle 30 is above the protective cover 4. When the protective cover 4 moves to the limit distance, the magnetic plate 2 35 attracts the magnetic plate 1 34, so that the magnetic plate 1 34 moves downward and approaches the magnetic plate 2 35. When the magnetic plate 1 34 moves downward, the baffle 30 and the top plate 31 will be driven to move downward. In the process of the top plate 31 moving downward, the spring 4 33 will be squeezed, so that the spring 4 33 will be deformed and generate elastic potential energy. Finally, the top plate 31 will seal the exposed position of the protective cover 4, so that the protective cover 4 forms a relatively sealed environment, which can reduce the sound of the centrifuge 3 when rotating to a certain extent, and can also effectively prevent people from accidentally touching the container tank. When the protective cover 4 is reset, the magnetic plate 1 34 is separated from the magnetic attraction range of the magnetic plate 2 35, and the spring 4 33 releases the elastic potential energy, and pushes the baffle 30 to reset to the initial position through the top plate 31.

[0051] Working principle: first, place the container tank on the surface of the centrifuge 3, and suck blood into the interior of the container tank, then move the protective cover 4 to prevent people from accidentally touching the container tank. During the movement of the protective cover 4, it will squeeze the inclined surfaces of a pair of triangular blocks 10, and the force on the triangular blocks 10 will drive the limiting tube 8 to move toward the clamping plate 5. When the triangular block 10 moves, the triangular block 10 will synchronously drive the piston rod 11 to move, and the piston rod 11 will drive the piston plate 17 to move inside the pressure tube 16. The movement of the piston plate 17 will squeeze the internal air of the pressure tube 16, thereby increasing the internal air pressure of the pressure tube 16, so that the air enters the interior of the clamping plate 5 through a pair of air pipes 18, and then from the interior of the clamping plate 5, it will be blown toward the top cap of the container tank through multiple groups of holes 19, so as to blow away the particle dust attached to the outside of the cap to prevent the particle dust from affecting the clamping effect. When the limiting tube 8 moves When the cam 10 is in motion, it will drive the reset mechanism to operate. The reset mechanism will be deformed and displaced at this time to provide moving space for the limiting tube 8. When the limiting tube 8 moves, it will also drive the square rod 7 to move through the spring 19. At this time, the movement of the square rod 7 will drive the clamping plate 5 to move through the connecting rod 6. The clamping plate 5 moves and clamps the cap on the top of the container tank to limit the position. With the continuous movement of the triangular block 10, when the clamping plate 5 has clamped the cap, the spring 19 will deform and cooperate with the continued movement of the triangular block 10 to provide it with moving space. Finally, after the protective cover 4 completely covers the container tank, a pair of clamping plates 5 have also been in a clamping state for the cap on the top of the container tank. Through the above-mentioned structural design, the movement of the protective cover 4 and the clamping of the cap are synchronized, which simplifies the working steps, improves the working time, avoids forgetting to clamp the cap, and improves the safety during work.

[0052] When the protective cover 4 squeezes the triangular block 10 to drive the limit tube 8 to move, it will drive the fixed plate 12 to move along the outer side of the limit rod 13, and the fixed plate 12 will squeeze the spring 2 15 when moving, so that the spring 2 15 will be deformed and generate elastic potential energy. It should be noted that the elastic potential energy generated by the pair of springs 2 15 is smaller than the elastic potential energy of the spring 1 9. After the protective cover 4 stops squeezing the triangular block 10, the spring 2 15 stops being stressed and releases the elastic potential energy, pushing the limit tube 8 to reset through the fixed plate 12, and the limit tube 8 resets and drives the triangular block 10 to reset.

[0053] In the initial state, the deceleration rod 20 is in contact with the top of the centrifuge 3, and when the protective cover 4 moves toward the centrifuge 3, the protective cover 4 drives the rack 23 to move, and after the rack 23 moves to a certain distance, the rack 23 drives the pulling mechanism to operate, and the operation of the pulling mechanism drives the fixed rod 21 to move upward along the inside of the connecting plate 22, and the upward movement of the fixed rod 21 drives the deceleration rod 20 to break away from the contact with the centrifuge 3. Finally, when the protective cover 4 completely protects the container tank, the pulling mechanism stops, and the deceleration rod 20 stops synchronously. At this time, the centrifuge 3 can rotate normally. When the centrifuge 3 finishes rotating, the centrifuge 3 will be closed and the protective cover 4 will be reset. When the protective cover 4 is reset, the rack 23 will reset a certain distance, and the rack 23 will stop controlling the pulling mechanism. The deceleration rod 20 and the fixed rod 21 will move down and reset under the action of gravity. When the deceleration rod 20 moves down and resets, it will fit with the centrifuge 3 again. The friction force generated between the deceleration rod 20 and the centrifuge 3 can quickly eliminate the rotation force of the centrifuge 3 under the action of inertia, thereby reducing the time required for inertial rotation after the centrifuge 3 is stopped, thereby improving work efficiency.

[0054] When the rack 23 moves a certain distance, the rack 23 will mesh with the spur gear 28, and the rack 23 will drive the spur gear 28 to rotate, and the rotation of the spur gear 28 will drive the rotating rod 25 to rotate, and the rotating rod 25 will rotate and pull the nylon rope 26, so that the nylon rope 26 is wrapped around the outside of the rotating rod 25, and the nylon rope 26 will be pulled by the force to move the fixed rod 21 upward, and the setting of the guide wheel 27 can guide the nylon rope 26, and the fixed rod 21 moves upward to drive the deceleration rod 20 to break away from the fit with the centrifuge 3, and the centrifuge 3 can be normally Rotation, it should be noted that when the protective cover 4 moves to the limit distance, the rack 23 is still in meshing with the spur gear 28. When the rack 23 is reset, the rack 23 will be out of meshing with the spur gear 28, and the deceleration rod 20 and the fixed rod 21 will fall freely under the action of gravity. The falling of the fixed rod 21 will pull the nylon rope 26, and the nylon rope 26 will be forced to drive the rotating rod 25 to reverse. The deceleration rod 20 will fall and finally fit with the centrifuge 3 again, thereby generating friction with the inertially rotating centrifuge 3, so that the centrifuge 3 stops rotating quickly;

[0055] When the deceleration rod 20 moves upward, it squeezes the spring three 29, causing the spring three 29 to deform and generate elastic potential energy. When the deceleration rod 20 finishes moving upward, the spring three 29 instantly releases the elastic potential energy, instantly pushing the deceleration rod 20 to reset, causing it to quickly contact the centrifuge 3. The elastic potential energy of the spring three 29 also increases the friction between the deceleration rod 20 and the centrifuge 3 to a certain extent.

[0056] In the initial state, the baffle 30 is above the protective cover 4. When the protective cover 4 moves to the limit distance, the magnetic plate 2 35 attracts the magnetic plate 1 34, so that the magnetic plate 1 34 moves downward and approaches the magnetic plate 2 35. When the magnetic plate 1 34 moves downward, the baffle 30 and the top plate 31 will be driven to move downward. In the process of the top plate 31 moving downward, the spring 4 33 will be squeezed, so that the spring 4 33 will be deformed and generate elastic potential energy. Finally, the top plate 31 will seal the exposed position of the protective cover 4, so that the protective cover 4 forms a relatively sealed environment, which can reduce the sound of the centrifuge 3 when rotating to a certain extent, and can also effectively prevent people from accidentally touching the container tank. When the protective cover 4 is reset, the magnetic plate 1 34 is separated from the magnetic attraction range of the magnetic plate 2 35, and the spring 4 33 releases the elastic potential energy, and pushes the baffle 30 to reset to the initial position through the top plate 31.

[0057] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A hematopoietic stem cell separator, comprising a separator body (1) and a separation chamber (2), wherein a centrifuge (3) is installed inside the separation chamber (2), a motor for driving the centrifuge (3) to rotate is installed at the bottom of the centrifuge (3), a container tank is installed at the top of the centrifuge (3), and a protective cover (4) is slidably connected to the top of the separation chamber (2), characterized in that: Also includes: A pair of clamps (5) is provided, and the pair of clamps (5) are respectively provided on both sides of the container tank, the ends of the pair of clamps (5) facing away from the container tank are fixedly connected to a connecting rod (6), the ends of the connecting rod (6) away from the clamps (5) are fixedly connected to a square rod (7), the outer side of the square rod (7) is slidably connected to a limiting tube (8), a spring (9) is fixedly connected between the inside of the limiting tube (8) and the square rod (7), and the end of the limiting tube (8) away from the square rod (7) is fixedly connected to a triangular block (10); A reset mechanism, which is arranged on the periphery of the limiting tube (8) and is used for resetting the clamping plate (5) after it moves; A piston rod (11) is fixedly connected to the bottom end of the triangular block (10). A dust removal mechanism is arranged on the periphery of the piston rod (11). The dust removal mechanism is used to blow air from the inside of the hole (19) to the outside of the container tank. The dust removal mechanism includes a plurality of groups of holes (19). The plurality of groups of holes (19) are all opened on the outside of the splint (5).

2. The hematopoietic stem cell separator according to claim 1, characterized in that: The reset mechanism comprises a fixed plate (12), a pair of limiting rods (13), a concave plate (14) and a second spring (15); the fixed plate (12) is fixedly connected to the outer side of the limiting tube (8); the pair of limiting rods (13) both pass through the fixed plate (12); the concave plate (14) is fixedly connected to the top of the separation chamber (2); the ends of the concave plate (14) facing away from the clamping plate (5) are both fixedly connected to the pair of limiting rods (13); the second spring (15) is respectively sleeved on the outer side of the pair of limiting rods (13); and the two ends of the second spring (15) are respectively fixedly connected to the concave plate (14) and the fixed plate (12).

3. The hematopoietic stem cell separator according to claim 2, characterized in that: The dust removal mechanism also includes a pressure tube (16), a piston plate (17) and a pair of air tubes (18); the pressure tube (16) is fixedly connected to the end of the concave plate (14) away from the clamping plate (5); the piston plate (17) is fixedly connected to the end of the piston rod (11) away from the triangular block (10); the piston plate (17) is adapted to the internal size of the pressure tube (16); the pair of air tubes (18) are both fixedly connected to the inside of the pressure tube (16); and the ends of the pair of air tubes (18) away from the pressure tube (16) are fixedly connected to the inside of the clamping plate (5).

4. The hematopoietic stem cell separator according to claim 3, characterized in that: A deceleration rod (20) is attached to the top of the centrifuge (3), a fixing rod (21) is fixed to the top of the deceleration rod (20), a connecting plate (22) is fixed to the inner wall of the separation chamber (2), the fixing rod (21) passes through the connecting plate (22), a rack (23) is fixed to the inner top of the protective cover (4), and a pulling mechanism matched with the rack (23) is provided at the top of the separation chamber (2), and the pulling mechanism is used to pull the deceleration rod (20) upward.

5. The hematopoietic stem cell separator according to claim 4, characterized in that: The pulling mechanism comprises a pair of support plates (24), a rotating rod (25), a nylon rope (26), a guide wheel (27) and a spur gear (28); the pair of support plates (24) are fixedly connected to the top of the separation chamber (2); both ends of the rotating rod (25) pass through the support plates (24); the nylon rope (26) is fixedly connected to the outer side of the rotating rod (25); one end of the nylon rope (26) away from the rotating rod (25) is fixedly connected to the top of the fixed rod (21); the guide wheel (27) is fixedly connected to the top of the separation chamber (2), and the guide wheel (27) is in contact with the outer side of the nylon rope (26); and the spur gear (28) is fixedly connected to the outer side of the rotating rod (25).

6. The hematopoietic stem cell separator according to claim 5, characterized in that: A spring three (29) is sleeved on the outer side of the fixing rod (21), and two ends of the spring three (29) are respectively fixedly connected to the deceleration rod (20) and the connecting plate (22).

7. The hematopoietic stem cell separator according to claim 6, characterized in that: The protective cover (4) is provided with a baffle (30) on the periphery, the top end of the baffle (30) is fixedly connected to a top plate (31), the top plate (31) is slidably connected to a pair of limit plates (32) inside, the bottom ends of the pair of limit plates (32) are fixedly connected to the protective cover (4), the outer sides of the pair of limit plates (32) are sleeved with springs (33), the two ends of the springs (33) are respectively fixedly connected to the top plate (31) and the protective cover (4), the outer side of the baffle (30) is fixedly connected to a magnetic plate (34), the top end of the separation chamber (2) is fixedly connected to a magnetic plate (35), and the magnetic plate (34) and the magnetic plate (35) are attracted to each other by opposite sex.

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