Reaction cup guiding and self-lubricating mechanism applied to coagulation analyzer

Abstract

The application relates to a reaction cup guiding and self-lubricating mechanism applied to a blood coagulation analyzer, which comprises a base provided with a reaction cup mounting cavity, an annular pressing block arranged at the upper portion of the reaction cup mounting cavity and provided with a mounting groove on the inner surface, the annular pressing block being coaxial with the reaction cup mounting cavity, and a clamping elastic body mounted in the mounting groove and coaxial with the annular pressing block, the inner surface of the clamping elastic body being capable of contacting the outer surface of the reaction cup during the process of putting the reaction cup, and reducing the abrasion of the outer surface of the reaction cup, so as to realize self-lubrication; wherein the clamping elastic body can be elastically deformed along the radial direction to clamp the reaction cup at the central position of the clamping elastic body, so as to realize the positioning of the reaction cup. The application can improve the positioning accuracy of the reaction cup, improve the cleaning degree of the optical channel after the reaction cup is put into the reaction cup mounting cavity, thereby ensuring the detection accuracy, and the optical channel no longer needs to be frequently cleaned.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical devices, in particular to a reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer. BACKGROUND

[0002] The global population is aging at an accelerated pace, and the incidence of chronic diseases such as cardiovascular disease and diabetes is rising. These diseases are closely related to blood coagulation function, and frequent coagulation detection is required, thereby promoting the growth of the market demand for automatic coagulation analyzers. Through improvements in optical detection systems and optimization of software algorithms, the detection speed of the instrument is continuously improved, a large number of samples can be detected in a shorter time, more advanced sensors, more stable reagents, and more accurate calibration techniques are used, which greatly improves the accuracy and reliability of the detection results, and helps doctors to more accurately diagnose diseases and develop treatment plans. Therefore, the stability and durability of the detection module are particularly important.

[0003] At present, the optical detection system of the coagulation instrument generally adopts a "shooting type" optical layout, that is, a specific wavelength light source channel is arranged on one side of the reaction cup, and optical detection components are arranged on the other side. The sample and reagent mixture in the reaction cup will absorb light of a specific wavelength through the dilution, mixing, incubation and other steps of the instrument, and the content of a specific substance in the sample can be obtained by calculating the "absorbance". However, the accurate detection of "absorbance" depends on stable light source signals, accurate detection components and optical fitting algorithms, and to a large extent depends on the positioning accuracy of the reaction cup and the cleanliness of the optical channel after the reaction cup is repeatedly placed, to ensure that there is no foreign matter to block the optical channel after a long time of wear. At present, the design of most coagulation instruments that takes into account the positioning accuracy and wear resistance of the reaction cup still faces great bottlenecks, and most instruments stipulate that the optical detection module be cleaned and used every six months or less.

[0004] The information disclosed in the background section of this application is only intended to increase the understanding of the general background of the application, and should not be considered as acknowledging or implying in any form that this information constitutes prior art known to those of ordinary skill in the art. SUMMARY

[0005] The purpose of the present application is to provide a reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer, which can improve the positioning accuracy of the reaction cup and improve the cleanliness of the optical channel after the reaction cup is placed in the reaction cup mounting cavity, thereby ensuring the accuracy of the detection, and no longer needing to clean the optical channel frequently.

[0006] The application provides a reaction cup guiding and self-lubricating mechanism applied to a blood coagulation analyzer.

[0007] Preferably, the friction coefficient of the clamping elastic body is lower than 0.05.

[0008] Preferably, the material of the clamping elastic body is Teflon, nitrile rubber or fluororubber.

[0009] Preferably, the reaction cup mounting cavity is provided with a plurality of reaction cup mounting cavities.

[0010] Preferably, the annular compression block has a through cavity penetrating in the vertical direction, the through cavity comprises a compression block first cavity and a compression block second cavity distributed in sequence from top to bottom, and the mounting groove is located at the bottom of the compression block first cavity; the diameter of the compression block first cavity is greater than that of the compression block second cavity and smaller than that of the mounting groove.

[0011] Preferably, the reaction cup mounting cavity comprises a first mounting cavity and a second mounting cavity, the first mounting cavity is located above the second mounting cavity; the diameter of the compression block second cavity is smaller than that of the top of the second mounting cavity, so as to avoid the contact between the reaction cup and the top of the second mounting cavity and reduce the abrasion of the reaction cup.

[0012] Preferably, the top of the annular compression block has a first inclination angle.

[0013] Preferably, the top of the compression block second cavity has a second inclination angle.

[0014] Preferably, the base further has a light passing hole extending along the horizontal direction and penetrating through the base and the reaction cup mounting cavity.

[0015] Preferably, the inner wall of the light passing hole has a circular arc transition angle.

[0016] The reaction cup guiding and self-lubricating mechanism applied to the blood coagulation analyzer of the application positions the reaction cup at the center position of the clamping elastic body by using the annular pressing block and the clamping elastic body, so as to improve the positioning accuracy of the reaction cup. In addition, the inner surface of the clamping elastic body contacts the outer surface of the reaction cup during the process of putting in the reaction cup, and reduces the abrasion of the outer surface of the reaction cup, and further improves the cleaning degree of the optical channel after the reaction cup is put into the reaction cup mounting cavity, ensures that there is no foreign matter to block the optical channel after long-time abrasion, so as to ensure the accuracy of detection, and the optical channel no longer needs to be cleaned frequently.

[0017] The method and device of the application have other characteristics and advantages, which will be apparent or will be described in detail in the accompanying drawings and subsequent embodiments incorporated herein, which are collectively used to explain the specific principles of the application. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Structure schematic view of the reaction cup guiding and self-lubricating mechanism applied to the blood coagulation analyzer of the embodiment of the application;

[0019] Figure 2 Another structure schematic view of the reaction cup guiding and self-lubricating mechanism applied to the blood coagulation analyzer of the embodiment of the application;

[0020] Figure 3 Structure schematic view of the reaction cup; Figure 1 Cross-sectional view of the reaction cup;

[0021] Figure 4 Structure schematic view of the reaction cup; Figure 3 Schematic view after the annular pressing block and the clamping elastic body are omitted;

[0022] Figure 5 Structure schematic view of the annular pressing block;

[0023] Figure 6 Cross-sectional view of the annular pressing block;

[0024] Figure 7 Structure schematic view of the reaction cup;

[0025] Figure 8 Schematic view of the reaction cup and the clamping elastic body with deviation in the axis;

[0026] Explanation of reference signs:

[0027] 100, base; 101, light hole; 102, limiting structure; 110, reaction cup mounting cavity; 111, first mounting cavity; 112, second mounting cavity; 103, circular arc transition corner;

[0028] 200. Annular clamping block; 201. Mounting groove; 202. First tilt angle; 203. Plane; 204. Through cavity; 205. First cavity of clamping block; 206. Second cavity of clamping block; 207. Second tilt angle;

[0029] 300. Clamping elastomer;

[0030] 400. Reaction cup; 410. Upper part; 411. Clamping position; 420. Lower part; 421. Guide position;

[0031] 500, optical fiber;

[0032] 600. Optical sensor.

[0033] It should be understood that the accompanying drawings are not necessarily drawn to scale, but rather present simplified representations of various features to illustrate the basic principles of the invention. Specific design features disclosed in this invention (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific environment in which they are intended for application and use.

[0034] Throughout these figures, the same reference numerals denote the same or equivalent parts of the invention. Detailed Implementation

[0035] Reference will now be made in detail to various embodiments of the invention, examples of which are presented in the accompanying drawings and described below. Although the invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the invention to these exemplary embodiments. Rather, the invention is intended to cover not only these exemplary embodiments, but also various alternatives, modifications, equivalents, and other embodiments that may be included within the spirit of the invention and the scope defined by the appended claims.

[0036] When a component is referred to as being "above" or "on top of" another component, the component may be in contact with the other component, or the component may be spaced apart from the other component, or there may be an intermediate component between the component and the other component.

[0037] The following is combined with Figures 1 to 8 The reaction cup guide and self-lubricating mechanism applied to a coagulation analyzer according to an embodiment of the present invention will be described.

[0038] like Figures 1 to 3 As shown, the reaction cup guide and self-lubricating mechanism of the present invention applied to a coagulation analyzer includes: a base 100, an annular clamping block 200, and a clamping elastomer 300.

[0039] like Figure 3 As shown, the base 100 is provided with a reaction cup mounting cavity 110.

[0040] An annular clamping block 200 is disposed on the upper part of the reaction cup mounting cavity 110, and a mounting groove 201 is provided on its inner surface. The annular clamping block 200 is coaxially disposed with the reaction cup mounting cavity 110.

[0041] The clamping elastomer 300 is installed in the mounting groove 201 and is coaxially arranged with the annular clamping block 200. The inner surface of the clamping elastomer 300 can contact the outer surface of the reaction cup 400 during the placement of the reaction cup and reduce the wear on the outer surface of the reaction cup, thereby achieving self-lubrication.

[0042] The clamping elastomer 300 can elastically deform along the radial direction to hold the reaction cup 400 at its center, thereby achieving positioning of the reaction cup 400. Because the clamping elastomer 300 is elastic, it has a self-resetting function, which can center the reaction cup 400, ensuring that the reaction cup 400 is stable in a fixed position for each testing project, thus achieving consistent testing distance.

[0043] In this embodiment of the invention, the annular clamping block 200 and the clamping elastic body 300 are used to position the reaction cup 400 at the center of the clamping elastic body 300, thereby improving the positioning accuracy of the reaction cup 400. Furthermore, the inner surface of the clamping elastic body 300 contacts the outer surface of the reaction cup 400 during placement, reducing wear on the outer surface of the reaction cup 400. This improves the cleanliness of the optical channel after the reaction cup 400 is placed in the reaction cup mounting cavity 110, ensuring that no foreign objects obstruct the optical channel after prolonged wear, thus guaranteeing the accuracy of the detection and eliminating the need for frequent cleaning of the optical channel.

[0044] The clamping elastomer 300 has high wear resistance. The high wear resistance of the clamping elastomer 300 can reduce the wear of the reaction cup on the clamping elastomer 300, thereby reducing the blockage of optical pathways by wear debris.

[0045] The coefficient of friction of the clamping elastomer 300 is lower than the reference value, specifically, the reference value is 0.05.

[0046] The clamping elastomer 300 can be made of materials such as Teflon (PTFE), nitrile rubber, or fluororubber, which have high wear resistance and extremely low coefficient of friction, i.e., self-lubricating properties. When moving in and out of the clamping elastomer 300, the reaction cup 400 and the clamping elastomer 300 rub directly against each other, which can reduce the wear of the reaction cup 400 and thus reduce the amount of debris generated by wear that may block the optical path.

[0047] The coaxial arrangement here refers to the axes being on the same straight line. For example, the coaxial arrangement of the annular clamping block 200 and the reaction cup mounting cavity 110 means that the axis of the annular clamping block 200 and the axis of the reaction cup mounting cavity 110 are on the same axis. The coaxial arrangement of the clamping elastic body 300 and the annular clamping block 200 means that the axis of the clamping elastic body 300 and the axis of the annular clamping block 200 are on the same axis; that is, the axes of the clamping elastic body 300, the annular clamping block 200, and the reaction cup mounting cavity 110 are on the same straight line.

[0048] In this invention, positioning refers to moving the reaction cup 400 to the axis of the reaction cup mounting cavity 110, that is, positioning the reaction cup 400 at the center of the clamping elastic body 300. This axis refers to an axis extending vertically. By moving the reaction cup 400 to the axis of the clamping elastic body 300, the reaction cup 400 can be moved to the axis of the reaction cup mounting cavity 110, thereby achieving positioning of the reaction cup 400.

[0049] like Figure 1 and Figure 2 As shown, the base 100 is provided with three reaction cup mounting cavities 110, but the number of reaction cup mounting cavities 110 can be adjusted according to the situation, for example, it can be set to any number from 2 to 10.

[0050] The following embodiments are all described using a base 100 with three reaction cup mounting cavities 110 as an example.

[0051] In an exemplary implementation, such as Figure 3 , Figure 5 and Figure 6 As shown, the top of the annular clamping block 200 has a first tilt angle 202 to guide the reaction cup 400 smoothly into the annular clamping block 200 and to guide the reaction cup toward the axis of the annular clamping block 200.

[0052] In an exemplary implementation, such as Figure 5 As shown, the annular clamping block 200 has two opposing planes 203 on its side to ensure that the annular clamping block 200 can be easily installed and removed from the base 100, thereby facilitating assembly and maintenance. The two planes 203 can be arranged symmetrically or asymmetrically.

[0053] The upper surface of the base 100 is provided with a rotatable pressure plate (not shown in the figure).

[0054] The annular clamping block 200 is placed directly into the reaction cup mounting cavity 110 of the base 100. After assembly, the pressure plate is rotated so that a portion of the pressure plate presses against the outer edge of the upper surface of the annular clamping block 200 to prevent the annular clamping block 200 from detaching from the reaction cup mounting cavity 110 of the base 100. During the rotation process, the pressure plate is in contact with the upper surface of the base 100.

[0055] In an exemplary implementation, such as Figure 6 As shown, the annular clamping block 200 has a through cavity 204 extending vertically. The through cavity 204 includes a first clamping block cavity 205 and a second clamping block cavity 206 distributed sequentially from top to bottom. The mounting groove 201 is located at the bottom of the first clamping block cavity 205, that is, the mounting groove 201 is recessed outward from the bottom of the first clamping block cavity 205 in the radial direction.

[0056] The diameter of the first cavity 205 of the clamping block is larger than the diameter of the second cavity 206 of the clamping block, but smaller than the diameter of the mounting groove 201.

[0057] The top of the first cavity 205 of the clamping block has the aforementioned first tilt angle 202.

[0058] The top of the second cavity 206 of the clamping block has a second tilt angle 207, which guides the reaction cup 400 and prevents the sharp part from scratching the reaction cup 400.

[0059] The bottom of the reaction cup 400 first enters the first cavity 205 of the clamping block, then contacts the clamping elastomer 300, and compresses the clamping elastomer 300. Here, compression refers to squeezing the clamping elastomer 300 radially outward, causing the inner surface of the clamping elastomer 300 to expand radially outward, thereby allowing the bottom of the reaction cup 400 to penetrate the clamping elastomer 300.

[0060] The annular clamping block 200 is generally made of plastic. The inner surface of the through cavity 204 has an extremely low coefficient of friction and good wear resistance. Preferably, the annular clamping block 200 can be made of polyoxymethylene (POM). When the outer surface of the reaction cup 400 contacts the inner surface of the through cavity 204, the extremely low coefficient of friction can reduce the frictional force between the reaction cup 400 and the inner surface of the through cavity 204, thereby reducing wear on the reaction cup 400.

[0061] The base 100 is generally made of metal, which is easy to process. In addition, since some reaction systems require a temperature-controlled environment in the detection zone, the base 100 also possesses good thermal conductivity. Preferably, the base 100 is made of 6061-T6 material.

[0062] In an exemplary implementation, such as Figure 3 and Figure 4As shown, the base 100 further has a light-transmitting hole 101, which extends along a first direction and penetrates the base 100 and the reaction cup mounting cavity 110.

[0063] The diameter d1 of the portion of the light-transmitting aperture 101 near the arc transition angle 103 is smaller than the diameter d2 of the portion far from the arc transition angle 103, ensuring that the incident light and the outgoing light are as straight as possible, and the reaction cup 400 is fixed for detection, thereby improving the stability of the detection results.

[0064] In an exemplary implementation, such as Figure 2 As shown, the outer wall of the first end of the light-transmitting hole 101 has a limiting structure 102. Specifically, the limiting structure 102 is... Figure 2 The inverted U-shaped groove in the middle.

[0065] During the process of the reaction cup 400 moving downward into the reaction cup mounting cavity 110, sufficient gap needs to be reserved. The bottom of the reaction cup 400 is prone to friction with the inner wall of the light transmission hole 101, which may cause the outer surface of the bottom of the reaction cup 400 to be worn, resulting in inaccurate test results.

[0066] To solve this problem, an arc transition angle 103 can be provided on the inner wall of the light-transmitting hole 101 to avoid sharp parts on the inner wall of the light-transmitting hole 101 causing scratches and damage to the reaction cup 400.

[0067] The outer wall of the light-transmitting hole 101 refers to the side wall of the base 100.

[0068] The inner wall of the light-transmitting hole 101 refers to the side wall of the reaction cup mounting cavity 110 of the base 100.

[0069] In an exemplary implementation, such as Figure 2 As shown, the reaction cup guiding and self-lubricating mechanism applied to the coagulation analyzer further includes: an optical fiber 500 and a filter (not shown in the figure).

[0070] The end of the optical fiber 500 is mounted on the limiting structure 102. The limiting structure 102 can ensure that the end face of the optical fiber is confined to a single position, thereby ensuring the accuracy of the detection.

[0071] A filter is installed at the end of the optical fiber 500 to filter light of a predetermined frequency.

[0072] The function of fiber optic cable 500 is to transmit light to one side of reaction vessel 400. Figure 2 The implementation scheme illustrates a three-in-one optical fiber that can be split by a filter at the front end of the optical fiber 500 so that the reaction cup 400 receives light of the wavelength required by the reaction system.

[0073] In an exemplary implementation, such as Figures 2 to 4As shown, the reaction cup guide and self-lubricating mechanism applied to the coagulation analyzer further includes a light sensor 600, which is installed on the outer wall of the second end of the light-transmitting hole 101.

[0074] The optical sensor 600 is capable of sensing the absorbance of light emitted from the optical fiber 500 and transmitted through the reaction cup 400. Specifically, the optical sensor 600 can sense the intensity of the transmitted light and calculate the absorbance by combining it with the known intensity of the incident light.

[0075] According to design requirements, such as Figure 7 As shown, the diameter of the upper half 410 of the reaction cup 400 is usually larger than the diameter of the lower half 420 of the reaction cup 400. The outer wall of the upper half 410 of the reaction cup 400 is the clamping position 411, and the outer wall of the lower half 420 of the reaction cup 400 is the guiding position 421.

[0076] In an exemplary implementation, such as Figure 3 and Figure 4 As shown, the reaction cup mounting cavity 110 includes a first mounting cavity 111 and a second mounting cavity 112, with the first mounting cavity 111 located above the second mounting cavity 112.

[0077] The diameter of the first mounting cavity 111 matches the outer diameter of the annular clamping block 200, and the height of the first mounting cavity 111 is the same as the height of the annular clamping block 200, so as to install the annular clamping block 200.

[0078] The diameter of the second mounting cavity 112 is smaller than the diameter of the first mounting cavity 111 to accommodate the shape of the reaction cup 400.

[0079] In an exemplary embodiment, the diameter of the second cavity 206 of the clamping block is smaller than the diameter of the top of the second mounting cavity 112 to avoid contact between the reaction cup 400 and the top of the second mounting cavity 112, thereby reducing wear on the reaction cup 400.

[0080] The operation of the reaction cup guide and self-lubricating mechanism of the present invention applied to a coagulation analyzer is described below with reference to the accompanying drawings.

[0081] When the reaction cup 400 is not placed, the clamping elastomer 300 is divided into two parts. The first part is located in the mounting groove 201, and the second part of the clamping elastomer 300 is located in the first cavity 205 of the clamping block (i.e., not located in the mounting groove 201).

[0082] The robotic arm of the coagulation analyzer picks up the reaction cup 400 and places it above the reaction cup mounting cavity 110 of the base 100, that is, above the annular clamping block 200.

[0083] Because the top of the annular clamping block 200 has a first tilt angle 202, even if the reaction cup 400 does not deviate from the axis of the annular clamping block 200, it can still enter the first cavity 205 of the clamping block under the guidance of the first tilt angle 202.

[0084] As the reaction cup 400 moves downward, if the axis of the reaction cup 400 is aligned with or slightly deviated from the axis of the clamping elastomer 300, the bottom of the reaction cup 400 will pass directly through the clamping elastomer 300.

[0085] If the axis of the reaction cup 400 deviates significantly from the axis of the clamping elastomer 300, the bottom of the reaction cup 400 will contact the inner surface of the clamping elastomer 300 (i.e., the second part of the clamping elastomer 300) and press the inner surface of the clamping elastomer 300 outward in the radial direction. The pressed clamping elastomer 300 will apply an elastic restoring force to the guide position 421 of the reaction cup 400 to push the reaction cup 400 to a state where the axis of the reaction cup 400 is approximately aligned with the axis of the clamping elastomer 300, that is, to achieve initial horizontal positioning of the reaction cup 400.

[0086] Regardless of whether there is a deviation when the reaction cup 400 and the clamping elastomer 300 first come into contact, the diameter of the bottom of the reaction cup 400 is larger than the inner diameter of the clamping elastomer 300 in its natural state. This allows the inner surface of the clamping elastomer 300 to contact the outer surface of the reaction cup 400. Since the coefficient of friction of the inner surface of the clamping elastomer 300 is extremely small, it can reduce the wear on the outer surface of the reaction cup, thereby achieving self-lubrication.

[0087] As the reaction cup 400 continues to move downwards, the bottom of the reaction cup 400 begins to pass through and beyond the light-transmitting hole 101. At the same time, the larger diameter upper half 410 of the reaction cup 400 begins to contact the inner surface of the clamping elastomer 300, that is, the clamping position 411 of the reaction cup 400 contacts the inner surface of the clamping elastomer 300.

[0088] If the axis of the reaction cup 400 is not aligned with the axis of the clamping elastic body 300, the clamping elastic body 300 will be compressed to different degrees, resulting in a horizontal elastic restoring force in the clamping elastic body 300, which will push the reaction cup 400 until its axis is aligned with the axis of the clamping elastic body 300. Figure 8For example, if the axis of the reaction cup 400 is closer to side A than the axis of the clamping elastic body 300, during the process of the reaction cup 400 compressing the clamping elastic body 300, the portion of the clamping elastic body 300 on side A will be compressed more than the portion on side B. This causes the clamping elastic body 300 to generate an elastic restoring force from side A to side B, pushing the reaction cup 400 towards side B until the axis of the reaction cup 400 is aligned with the axis of the clamping elastic body 300. When the two axes are aligned, the clamping elastic body 300 is compressed to the same degree in all horizontal directions, resulting in the reaction cup 400 receiving the same elastic restoring force in all horizontal directions. At this point, the reaction cup 400 no longer moves in the horizontal direction, thus maintaining the alignment of the two axes and positioning the reaction cup 400 at the center of the clamping elastic body 300.

[0089] In this configuration, with the axes aligned, as the reaction cup 400 continues to move downwards, the diameter of the portion of the reaction cup 400 in contact with the clamping elastomer 300 increases. This results in a greater degree of compression of the clamping elastomer 300 by the reaction cup 400, causing more of the clamping elastomer 300 (i.e., a portion of the second part of the clamping elastomer 300) or even all of the second part of the clamping elastomer 300 to be squeezed into the mounting groove 201. If the diameter of the reaction cup 400 is relatively small, a portion of the second part of the clamping elastomer 300 may remain in the first cavity 205 of the clamping block. If the diameter of the reaction cup 400 is relatively large, the entire clamping elastomer 300 may be squeezed into the mounting groove 201.

[0090] When the bottom of the reaction cup 400 reaches the bottom of the second mounting cavity 112, the reaction cup 400 stops moving downward.

[0091] Once the reaction cup 400 is fixed, the light emitted from the optical fiber 500 illuminates the reaction cup 400 through the light transmission hole 101 and passes through the reaction cup 400. The transmitted light through the reaction cup 400 passes through the light transmission hole 101 and reaches the photosensitive sensor 600, thereby completing the detection.

[0092] For ease of interpretation and precise definition of the appended claims, the terms “upper,” “lower,” “inner,” “outer,” “above,” “below,” “above,” “below,” “upward,” “downward,” “front,” “back,” “behind,” “inner side,” “outer side,” “inward,” “outer,” “internal,” “external,” “inner,” “external,” “forward,” and “backward” are used to describe the features of the exemplary embodiments with reference to the positions of these features shown in the accompanying drawings.

[0093] The foregoing description of specific exemplary embodiments of the invention is for illustrative and descriptive purposes. It is not intended to be exhaustive, nor to limit the invention to the precise forms disclosed; clearly, many changes and variations are possible in accordance with the foregoing teachings. The exemplary embodiments were chosen and described to explain the specific principles of the invention and its practical application, thereby enabling others skilled in the art to implement and utilize various exemplary embodiments of the invention, as well as their different alternatives and modifications. The scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer, characterized in that, include: The base has a reaction cup mounting cavity; An annular clamping block is disposed at the upper part of the reaction cup mounting cavity, and has a mounting groove on its inner surface. The annular clamping block is coaxially arranged with the reaction cup mounting cavity. A clamping elastomer is installed in the mounting groove and is coaxially arranged with the annular clamping block. The inner surface of the clamping elastomer can contact the outer surface of the reaction cup during the placement of the reaction cup and reduce the wear on the outer surface of the reaction cup, thereby achieving self-lubrication. The clamping elastomer is capable of elastic deformation along the radial direction to clamp the reaction cup at the center position of the clamping elastomer, thereby achieving the positioning of the reaction cup; The inner diameter of the clamping elastomer in its natural state is smaller than the diameter of the lower part of the reaction cup; The annular clamping block has a through cavity extending vertically, the through cavity comprising a first clamping block cavity and a second clamping block cavity distributed sequentially from top to bottom, and the mounting groove is located at the bottom of the first clamping block cavity; The diameter of the first cavity of the clamping block is larger than the diameter of the second cavity of the clamping block, but smaller than the diameter of the mounting groove; The reaction cup mounting cavity includes a first mounting cavity and a second mounting cavity, with the first mounting cavity located above the second mounting cavity; The diameter of the second cavity of the clamping block is smaller than the diameter of the top of the second mounting cavity to avoid contact between the reaction cup and the top of the second mounting cavity, thereby reducing wear on the reaction cup.

2. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The coefficient of friction of the clamping elastomer is less than 0.

05.

3. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The clamping elastomer is made of Teflon, nitrile rubber, or fluororubber.

4. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The reaction cup mounting cavity is provided with multiple chambers.

5. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The top of the annular clamping block has a first tilt angle.

6. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The top of the second cavity of the clamping block has a second tilt angle.

7. The reaction cup guiding and self-lubricating mechanism for use in a coagulation analyzer according to claim 1, characterized in that, The base further comprises: A light-transmitting hole extends horizontally and penetrates the base and the reaction cup mounting cavity.

8. A reaction cup guiding and self-lubricating mechanism for a coagulation analyzer according to claim 7, characterized in that, The inner wall of the light-transmitting hole has a rounded transition angle.

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