Thromboelastography instrument rotary scanning mechanism

Abstract

The present invention relates to a rotating code scanning mechanism of a thrombelastograph, comprising: a rotating assembly for rotating a test tube fed into a sample feeding table, a clamping assembly for cooperating with the rotating assembly to limit the test tube, a force-applying assembly for generating a clamping force, and a triggering assembly for pushing the clamping assembly away from the rotating assembly; when scanning the code, the triggering assembly disengages from the clamping assembly, so that the force-applying assembly drives the clamping assembly to move toward the rotating assembly and clamp the test tube, and the test tube rotates under the drive of the rotating assembly; the present application utilizes a spring to flexibly clamp the test tube, has very low requirements on the size and position of the test tube and the installation accuracy of each component, has a simple structure, a small volume, extremely low cost, and good reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more specifically to a rotating code scanning mechanism of a thromboelastograph. Background Art

[0002] The thromboelastogram is an analyzer that detects the dynamic changes of blood coagulation. It is a non-invasive diagnostic instrument used to monitor and analyze the coagulation state of blood samples, thereby playing an auxiliary role in assessing the patient's clinical hemostasis symptoms. Its principle is based on the fact that the final state of the coagulation process is the formation of a blood clot, and the physical properties of the blood clot (such as blood clot strength and stability, etc.) determine whether it has normal coagulation function.

[0003] When testing with a thromboelastograph, several test tubes containing blood need to be placed on the thromboelastograph, and each test tube is labeled with a 1D or 2D code. This mark is usually randomly oriented. After the test tube enters the instrument, a rotating device is required to turn the 1D or 2D code to the scanning device so that the information of the test tube can be entered into the system.

[0004] Although the existing rotating code scanning mechanism can automatically rotate the test tube for scanning, its internal structure is relatively complex and the cost is relatively high. In addition, the rotating module and the clamping module are separately provided, resulting in a larger size of the whole machine. The clamping of the test tube is more dependent on motor drive, the clamping force is unstable, and the reliability is not high. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing rotating code scanning mechanism has defects such as high cost, insufficient reliability and large size. In view of the above defects of the prior art, a rotating code scanning mechanism of a thrombelastograph is provided.

[0006] The technical solution adopted by the present invention to solve its technical problem is: constructing a thromboelastogram rotating scanning mechanism, including: a rotating component for rotating the test tube fed into the sample feeding table, a clamping component for cooperating with the rotating component to limit the test tube, a force-applying component for generating a clamping force, and a triggering component for pushing the clamping component away from the rotating component; when scanning the code, the triggering component disengages from the clamping component, so that the force-applying component drives the clamping component to move toward the rotating component and clamp the test tube, and the test tube rotates under the drive of the rotating component.

[0007] Furthermore, the rotating code scanning mechanism includes a base; the rotating assembly includes a first motor and a rotating wheel; the first motor is arranged on the end surface of the base, and the first rotating shaft of the first motor passes through the base and is connected to the rotating wheel.

[0008] Furthermore, the clamping assembly includes: a slide rail arranged at an end of the base facing away from the first motor, a slider arranged on the slide rail, and a slide seat arranged on the slider; the slider reciprocates along the slide rail.

[0009] Furthermore, the sliding seat is provided with a first connecting seat; the base is provided with a second connecting seat corresponding to the first connecting seat; and the force-applying component includes a spring for connecting the first connecting seat and the second connecting seat.

[0010] Furthermore, a mounting frame is provided on the sliding seat on a side facing the rotating wheel; a second rotating shaft and a driven wheel arranged on the second rotating shaft are provided on the mounting frame.

[0011] Furthermore, the sliding seat is provided with a first protruding portion protruding toward one side; and the first protruding portion is provided with a contact block on a side facing the first motor.

[0012] Furthermore, a roller is provided on the contact block.

[0013] Furthermore, the trigger assembly includes: a second motor arranged at one end of the base facing the first motor, and a trigger member arranged on the second motor.

[0014] Furthermore, the trigger member is a cam arranged on the second motor; the cam is provided with a second protrusion protruding to one side.

[0015] Furthermore, the trigger member is provided with an induction disk and a notch on the induction disk; the second motor is provided with an origin sensor arranged corresponding to the notch.

[0016] The beneficial effects of the present invention are as follows: the four parts of the rotating assembly, the clamping assembly, the force-applying assembly and the trigger assembly are matched, and the four parts are designed as an integrated whole, with a simple structure, a small size and extremely low cost. The clamping force of the test tube is provided by the force-applying assembly, and the other parts do not participate in the clamping. The clamping force is stable and can adapt to test tubes of different diameters. Moreover, since the force-applying assembly itself generates the clamping force, the installation accuracy requirements of each part are not high, and the roundness requirements of the test tube are not high, and the reliability is good. When scanning the code, the trigger assembly is disengaged from the clamping assembly, and then the force-applying assembly is triggered to drive the clamping assembly to cooperate with the rotating assembly to limit the test tube and provide a clamping force to clamp the test tube. The rotating assembly itself can rotate the test tube, and the control is simple, reducing the burden and development cost of the control system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0018] Figure 1 This is a structural schematic diagram of a rotary code scanning mechanism of a thromboelastography instrument according to an embodiment of the present invention;

[0019] Figure 2 For the embodiment of the present invention Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 For the embodiment of the present invention Figure 1 The enlarged schematic diagram of point B in the middle;

[0021] Figure 4 This is a schematic diagram of the state of a rotating code scanning mechanism of a thromboelastography instrument in a standby state according to an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the working state of a rotating code scanning mechanism of a thromboelastography instrument according to an embodiment of the present invention;

[0023] Figure 6 For the embodiment of the present invention Figure 5 Schematic diagram from top view;

[0024] Figure 7 For the embodiment of the present invention Figure 5 Enlarged schematic diagram of point C in the middle.

[0025] In the figure, 1. rotating component; 2. clamping component; 3. force-applying component; 4. triggering component; 5. test tube; 6. barcode scanner; 7. base; 11. first motor; 12. rotating wheel; 21. slide rail; 22. slider; 23. sliding seat; 24. mounting bracket; 25. second rotating shaft; 26. driven wheel; 31. spring; 41. second motor; 42. cam; 43. induction disk; 44. origin sensor; 111. first rotating shaft; 231. first protrusion; 232. contact block; 233. roller; 421. second protrusion; 431. notch. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0027] Embodiment 1:

[0028] Embodiment of the present invention Figures 1 to 7 As shown, a thromboelastogram rotating scanning mechanism is provided, comprising: a rotating assembly 1 for rotating a test tube 5 fed into a sample feeding table, a clamping assembly 2 for cooperating with the rotating assembly 1 to limit the test tube 5, a force-applying assembly 3 for generating a clamping force, and a triggering assembly 4 for pushing the clamping assembly 2 away from the rotating assembly 1; when scanning the code, the triggering assembly 4 disengages from the clamping assembly 2, so that the force-applying assembly 3 drives the clamping assembly 2 to move toward the rotating assembly 1 and clamp the test tube 5, and the test tube 5 rotates under the drive of the rotating assembly 1.

[0029] When the initial contact between the trigger component 4 and the clamping component 2 changes to the maximum contact, the clamping component 2 moves away from the rotating component 1 under the push of the trigger component 4. At this time, the force-applying component 3 cannot provide a clamping force under the restriction of the trigger component 4, and a space for the test tube 5 to pass through is generated between the clamping component 2 and the rotating component 1. The barcode scanner 6 is completely fixed at any position where the one-dimensional code or two-dimensional code on the test tube 5 can be scanned.

[0030] When scanning the code, the sample delivery platform of the thromboelastography instrument delivers the test tube 5 to the position between the rotating component 1 and the clamping component 2. At this time, the contact between the trigger component 4 and the clamping component 2 changes from the maximum limit contact to the disengagement contact. After the force-applying component 3 loses the restriction of the trigger component 4, it provides a clamping force to push the clamping component 2 to move toward the test tube 5. When the rotating component 1 and the clamping component 2 are in contact with the test tube 5, the clamping force clamps the test tube 5. At this time, the rotating component 1 starts, driving the test tube 5 to rotate, and the barcode scanner 6 scans the one-dimensional code or two-dimensional code on the test tube 5 to complete the system entry registration.

[0031] In this solution, the rotating assembly 1, the clamping assembly 2, the force-applying assembly 3 and the trigger assembly 4 are designed as one piece and cooperate with each other. The structure is simple, the volume is small, and the cost is extremely low. The rotating assembly 1 and the clamping assembly 2 only limit the test tube 5. The specific clamping is that the force-applying assembly 3 further pushes the clamping assembly 2 to clamp the test tube when the rotating assembly 1 and the clamping assembly 2 are in contact with the test tube 5. The clamping force is stable and can adapt to test tubes of different diameters. The installation accuracy requirements are not high, and the roundness requirements for the test tube 5 are not high. The reliability is good. The four parts cooperate with each other to complete the rotating code scanning process as much as possible, and the control is simple, reducing the burden and development cost of the control system.

[0032] The rotating code scanning mechanism includes a base 7; the rotating assembly 1 includes a first motor 11 and a rotating wheel 12; the first motor 11 is arranged on the end surface of the base 7, and the first rotating shaft 111 of the first motor 11 passes through the base 7 and is connected to the rotating wheel 12. When the test tube 5 is clamped, the first motor 11 is started to drive the rotating wheel 12 to rotate, and the rotating wheel 12 drives the test tube 5 to rotate with the cooperation of the clamping assembly 2. The positions of the first motor 11 and the rotating wheel 12 are fixed.

[0033] The clamping assembly 2 includes: a slide rail 21 arranged at the end of the base 7 facing away from the first motor 11, a slider 22 arranged on the slide rail 21, and a slide seat 23 arranged on the slider 22; the slider 22 reciprocates along the slide rail 21. A first connecting seat is arranged on the slider 22; a second connecting seat corresponding to the first connecting seat is arranged on the base 7; and the force-applying assembly 3 includes a spring 31 for connecting the first connecting seat and the second connecting seat. A mounting frame 24 is arranged on the side of the slide seat 23 facing the rotating wheel 12; a second rotating shaft 25 and a driven wheel 26 arranged on the second rotating shaft 25 are arranged on the mounting frame 24. A first protrusion 231 protruding to one side is arranged on the slide seat 23; a contact block 232 is arranged on the side of the first protrusion 231 facing the first motor 11. A roller 233 is arranged on the contact block 232.

[0034] The trigger assembly 4 includes: a second motor 41 disposed at one end of the base 7 facing the first motor 11, and a trigger member disposed on the second motor 41. The trigger member is a cam 42 disposed on the second motor 41, and a second protrusion 421 is disposed on the cam 42. The trigger member is provided with a sensing disk 43 and a notch 431 located on the sensing disk 43; the second motor 41 is provided with an origin sensor 44 disposed corresponding to the notch 431.

[0035] Before the feeding platform feeds the test tube 5, the second protrusion 421 of the cam 42 contacts the contact block 232, so that the sliding seat 23 is pushed away from the rotating wheel 12, the spring 31 is in an extended state, and there is a space between the rotating wheel 12 and the driven wheel 26 for the test tube 5 to pass (i.e., standby state). At this time, when the sample feeding platform is fed and reaches between the rotating wheel 12 and the driven wheel 26, the second motor 41 is started, driving the cam 42 to rotate clockwise. During the rotation process, the roller 233 and the cam 42 change from the contact state to the disengagement state. At this time, the spring 31 without reaction force restriction shrinks, pulling the slider 22, the sliding seat 23 and other structures on the sliding seat 23 to slide along the slide rail 21 toward the rotating wheel 12, until the rotating wheel 12 and the driven wheel 26 contact the test tube 5. At this time, the spring 31 is still in an extended state and still exerts a force on the slider 22, so that the rotating wheel 12 and the driven wheel 26 clamp the test tube 5. The first motor 11 is started, the rotating wheel 12 drives the test tube 5 to rotate, and the barcode scanner 6 starts to scan the one-dimensional code or two-dimensional code on the test tube 5. After the scanning is completed, the mechanism returns to the standby state and releases the test tube 5.

[0036] Among them, there are two driven wheels 26, which are in corresponding positions and can rotate freely. When clamped, the test tube 5 is in three-point contact with the rotating wheel 12 and the two driven wheels 26. The driven wheels 26 include but are not limited to bearings. The slide rail 21 is a linear guide rail, and the slider 22 performs horizontal linear reciprocating motion on the slide rail 21. The spring 31 is a tension spring, and the function of the second protrusion 421 on the cam 42 is to make the cam 42 have a self-locking function, and self-locking is achieved when the cam 42 rotates forward or reverses to a specified position.

[0037] The origin sensor 44 can detect the notch 431 on the induction disk 43 so that the control system can obtain the initial position of the cam 42. The roller 233 contacts the cam 42 and rolls along the surface of the cam 42, which can make the mechanism run more smoothly. The roller 233 is a bearing.

[0038] Embodiment 2

[0039] Embodiment 2 of the present invention provides a rotating scanning mechanism of a thrombelastograph, in which the structures of the rotating component 1, the force-applying component 3 and the trigger component 4 are the same as those of the components of embodiment 1, and the clamping component 2 is different from the clamping component 2 of embodiment 1, that is, no roller is arranged on the contact block, and in the process of changing from the standby state to the working state, the cam surface slides in contact with the contact block, and when it changes to the working state, the contact block is out of contact with the cam.

[0040] Embodiment 3

[0041] Embodiment 2 of the present invention provides a rotating scanning mechanism for a thrombelastograph, in which the structures of the rotating component 1, the force-applying component 3 and the clamping component 2 are the same as those of the components of embodiment 1, and the trigger component 4 is different from the trigger component 4 of embodiment 1, that is, the cam is replaced by a rotating shaft eccentrically mounted on the second motor, and the motor can also work when the rotating shaft is against the contact block.

[0042] In the above-mentioned embodiments 1 to 3, the spring can be replaced by any structure capable of storing energy, such as a magnet, a cylinder, etc., and the cam and the contact block can also be replaced by other mechanisms capable of relieving the pressure exerted by the spring on the test tube.

[0043] In summary, the present application utilizes a spring to flexibly clamp the test tube, has very low requirements on the size and position of the test tube and the installation accuracy of each component, has a simple structure, a small size, extremely low cost and good reliability.

[0044] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A rotating code scanning mechanism for a thromboelastograph, characterized in that: include: A rotating assembly for rotating the test tube fed into the sample feeding table, a clamping assembly for cooperating with the rotating assembly to limit the position of the test tube, a force-applying assembly for generating a clamping force, and a trigger assembly for pushing the clamping assembly away from the rotating assembly; the force-applying assembly includes a spring; the trigger assembly includes a second motor and a trigger member disposed on the second motor; the trigger member is a cam disposed on the second motor, and a second protrusion is disposed on the cam; When scanning the code, the trigger component is separated from the clamping component, so that the force-applying component drives the clamping component to move toward the rotating component and clamp the test tube, and the test tube rotates under the drive of the rotating component; The rotating code scanning mechanism includes a base; the rotating assembly includes a first motor and a rotating wheel; The first motor is arranged on the end surface of the base, and the first rotating shaft of the first motor passes through the base and is connected to the rotating wheel; the clamping assembly comprises: a slide rail arranged at an end of the base facing away from the first motor, a slider arranged on the slide rail, and a sliding seat arranged on the slider; The slider reciprocates along the slide rail; The sliding seat is provided with a first connecting seat; the base is provided with a second connecting seat corresponding to the first connecting seat; the spring connects the first connecting seat and the second connecting seat; The sliding seat is provided with a mounting frame on the side facing the rotating wheel; the mounting frame is provided with a second rotating shaft and a driven wheel arranged on the second rotating shaft; The sliding seat is provided with a first protruding portion protruding toward one side; the first protruding portion is provided with a contact block on the side facing the first motor; and the contact block is provided with a roller; Before the feed table feeds the test tube, the second protrusion of the cam contacts the contact block, so that the sliding seat is pushed away from the rotating wheel, the spring is in an extended state, and there is space between the rotating wheel and the driven wheel for the test tube to pass through; at this time, when the sample feeding table reaches between the rotating wheel and the driven wheel, the second motor starts, driving the cam to rotate clockwise. During the rotation, the roller and the cam change from a contact state to a disengaged state. At this time, the spring that loses the reaction force restriction contracts, pulling the slider, the sliding seat and other structures on the sliding seat to slide along the slide rail toward the rotating wheel until the rotating wheel and the driven wheel contact the test tube. At this time, the spring is still in an extended state and will still apply force to the slider, so that the rotating wheel and the driven wheel clamp the test tube; the first motor starts, the rotating wheel drives the test tube to rotate, and the barcode scanner starts to scan the one-dimensional code or two-dimensional code on the test tube. After the scanning is completed, the mechanism returns to the standby state and releases the test tube.

2. The thromboelastograph rotating code scanning mechanism according to claim 1, characterized in that: The second motor is disposed at one end of the base facing the first motor.

3. The thromboelastograph rotating code scanning mechanism according to claim 2, characterized in that: The trigger member is provided with an induction disk and a notch on the induction disk; the second motor is provided with an origin sensor corresponding to the notch.

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