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

Abstract

The invention relates to a reaction cup guiding and self-lubricating mechanism applied to a blood coagulation analyzer, comprising: a base provided with a reaction cup mounting cavity; the annular pressing block is arranged at the upper part of the reaction cup mounting cavity, a mounting groove is formed in the inner surface of the annular pressing block, and the annular pressing block and the reaction cup mounting cavity are coaxially arranged; the clamping elastic body is installed in the installation groove, the clamping elastic body and the annular pressing block are coaxially arranged, the inner surface of the clamping elastic body can make contact with the outer surface of the reaction cup in the process that the reaction cup is placed in, abrasion to the outer surface of the reaction cup is reduced, and therefore self-lubricating is achieved; wherein the clamping elastic body can generate elastic deformation along the radial direction, so that the reaction cup is clamped at the central position of the clamping elastic body, and the positioning of the reaction cup is realized. The positioning precision of the reaction cup can be improved, and the cleaning degree of the optical channel after the reaction cup is placed in the reaction cup mounting cavity is improved, so that the detection accuracy is ensured, and the optical channel does not need to be frequently cleaned.

Description

Technical Field

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

[0002] The global population aging process is accelerating, and the incidence of chronic diseases such as cardiovascular diseases and diabetes is rising continuously. These diseases are closely related to blood coagulation function and require frequent blood coagulation tests, thus driving the growth of the demand for the fully automatic coagulation analyzer market. By improving the optical detection system, optimizing the software algorithm, etc., the detection speed of the instrument is continuously increased, and a large number of samples can be detected in a shorter time. By using more advanced sensors, more stable reagents and more accurate calibration techniques, the accuracy and reliability of the detection results are greatly improved, which helps doctors diagnose diseases more accurately and formulate treatment plans. Therefore, the stability and durability of the detection module are particularly important.

[0003] Currently, the optical detection system of coagulation instruments generally adopts a "transmissive" optical layout, that is, a light source channel with a specific wavelength 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 with a specific wavelength through steps such as dilution, mixing, and incubation of the instrument. The content of specific substances in the sample can be obtained by calculating the "absorbance". However, the accurate detection of "absorbance" depends on a stable light source signal, accurate detection components and optical fitting algorithms, and also largely depends on the positioning accuracy of the reaction cup and the cleanliness of the optical channel after the reaction cup is repeatedly placed, ensuring that there is no foreign matter blocking the optical channel after long-term wear. Currently, in common coagulation instruments, the design that takes into account both the positioning accuracy and wear resistance of the reaction cup still faces great bottlenecks, and most instruments stipulate that the optical detection module should be cleaned and then used every six months or less.

[0004] The information disclosed in the background part of the present invention is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art already known to those of ordinary skill in the art. Summary of the Invention

[0005] The purpose of the present invention 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 the cleanliness of the optical channel after the reaction cup is placed in the reaction cup installation cavity, thereby ensuring the accuracy of the detection and no longer requiring frequent cleaning of the optical channel.

[0006] The present invention provides a reaction cup guiding and self-lubricating mechanism for a coagulation analyzer, comprising: a base provided with a reaction cup installation cavity; an annular pressing block disposed at the upper part of the reaction cup installation cavity and having an installation groove on its inner surface, the annular pressing block being coaxially arranged with the reaction cup installation cavity; and a clamping elastic body installed in the installation groove and coaxially arranged 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 placing the reaction cup and reducing the wear on the outer surface of the reaction cup, thereby achieving self-lubrication; wherein, the clamping elastic body can elastically deform along the radial direction to clamp the reaction cup at the central position of the clamping elastic body, thereby achieving the positioning of the reaction cup.

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

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

[0009] Preferably, a plurality of reaction cup installation cavities are provided.

[0010] Preferably, the annular pressing block has a through cavity penetrating in the vertical direction, the through cavity includes a first pressing block cavity and a second pressing block cavity distributed in sequence from top to bottom, and the installation groove is located at the bottom of the first pressing block cavity; the diameter of the first pressing block cavity is larger than the diameter of the second pressing block cavity and smaller than the diameter of the installation groove.

[0011] Preferably, the reaction cup installation cavity includes a first installation cavity and a second installation cavity, the first installation cavity being located above the second installation cavity; the diameter of the second pressing block cavity is smaller than the diameter of the top of the second installation cavity to avoid contact between the reaction cup and the top of the second installation cavity, thereby reducing the wear of the reaction cup.

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

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

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

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

[0016] The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to the present invention positions the reaction cup at the central position of the clamping elastomer by using an annular pressing block and a clamping elastomer, so as to improve the positioning accuracy of the reaction cup. In addition, the inner surface of the clamping elastomer contacts the outer surface of the reaction cup during the process of placing the reaction cup, and reduces the wear on the outer surface of the reaction cup, thereby improving the cleanliness of the optical channel after the reaction cup is placed in the reaction cup installation cavity, ensuring that there is no foreign object blocking the optical channel after long-term wear, thus guaranteeing the accuracy of the detection, and no longer requiring frequent cleaning of the optical channel.

[0017] The method and device of the present invention have other characteristics and advantages, which will be obvious from the accompanying drawings incorporated herein and the subsequent embodiments, or will be described in detail in the accompanying drawings incorporated herein and the subsequent embodiments, and these drawings and embodiments are jointly used to explain the specific principles of the present invention. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to an embodiment of the present invention;

[0019] Figure 2 It is another schematic structural diagram of the reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to an embodiment of the present invention;

[0020] Figure 3 It is Figure 1 a cross-sectional view of

[0021] Figure 4 It is Figure 3 a schematic diagram after omitting the annular pressing block and the clamping elastomer;

[0022] Figure 5 It is a schematic structural diagram of the annular pressing block;

[0023] Figure 6 It is a cross-sectional view of the annular pressing block;

[0024] Figure 7 It is a schematic structural diagram of the reaction cup;

[0025] Figure 8 It is a simplified diagram showing the deviation of the axis of the reaction cup from that of the clamping elastomer.

[0026] Explanation of the Reference Numerals:

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

[0028] 200, Ring-shaped pressing block; 201, Installation groove; 202, First inclination angle; 203, Plane; 204, Through cavity; 205, First cavity of the pressing block; 206, Second cavity of the pressing block; 207, Second inclination angle;

[0029] 300, Clamping elastomer;

[0030] 400, Reaction cup; 410, Upper half; 411, Clamping position; 420, Lower half; 421, Guiding 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 present invention. The specific design features disclosed in the present invention (including, for example, specific dimensions, orientations, positions, and shapes) will be determined in part by the specific application and use environment.

[0034] In these figures, throughout the several views of the drawings, the same reference numerals denote the same or equivalent parts of the present invention. Detailed implementation manners

[0035] Hereinafter, various embodiments of the present invention will be described in detail. Examples of these embodiments are shown in the accompanying drawings and described as follows. Although the present invention will be described in conjunction with exemplary embodiments, it should be understood that this specification is not intended to limit the present invention to these exemplary embodiments. On the contrary, the present invention is intended to cover not only these exemplary embodiments, but also various alternative forms, modified forms, equivalent forms, and other embodiments that may be included within the spirit of the present invention and defined by the appended claims.

[0036] When a component is referred to as being "above" or "over" 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 will be combined with Figures 1 to 8 to illustrate a reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to an embodiment of the present invention.

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

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

[0040] The annular pressing block 200 is arranged at the upper part of the reaction cup mounting cavity 110, and an installation groove 201 is arranged on its inner surface. The annular pressing block 200 is coaxially arranged with the reaction cup mounting cavity 110.

[0041] The clamping elastomer 300 is installed in the installation groove 201 and is coaxially arranged with the annular pressing block 200. The inner surface of the clamping elastomer 300 can contact the outer surface of the reaction cup 400 during the process of putting the reaction cup in, and reduce the abrasion of the outer surface of the reaction cup, so as to achieve self-lubrication.

[0042] The clamping elastomer 300 can elastically deform along the radial direction to clamp the reaction cup 400 at the central position of the clamping elastomer 300, so as to realize the positioning of the reaction cup 400. Because the clamping elastomer 300 has elasticity and has a self-resetting function, it can center the reaction cup 400, ensure that the reaction cup 400 used in each detection item is stable at a fixed position, so as to realize the consistency of the detection distance.

[0043] The implementation scheme of the present invention uses the annular pressing block 200 and the clamping elastomer 300 to position the reaction cup 400 at the central position of the clamping elastomer 300 to improve the positioning accuracy of the reaction cup 400. In addition, the inner surface of the clamping elastomer 300 contacts the outer surface of the reaction cup 400 during the process of putting the reaction cup in, and reduces the abrasion of the outer surface of the reaction cup 400, thereby improving the cleaning degree of the optical channel after the reaction cup 400 is put into the reaction cup mounting cavity 110, ensuring that there is no foreign object blocking the optical channel after long-term abrasion, thus ensuring the accuracy of the detection and no longer requiring 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 abrasion of the reaction cup on the clamping elastomer 300, and further reduce the blockage of the optical path caused by the debris generated by the abrasion.

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

[0046] The material of the clamping elastomer 300 can be selected from polytetrafluoroethylene (PTFE), nitrile rubber, fluororubber, etc. These materials have high wear resistance and extremely low friction coefficients, that is, self-lubricating properties. When entering and leaving the clamping elastomer 300, the reaction cup 400 and the clamping elastomer 300 directly rub, which can reduce the abrasion of the reaction cup 400, and further reduce the blockage of the optical path caused by the debris generated by the abrasion.

[0047] The coaxial setting here means that the axes are on the same straight line. For example, the annular pressing block 200 and the reaction cup installation cavity 110 being coaxially set means that the axis of the annular pressing block 200 and the axis of the reaction cup installation cavity 110 are the same axis. The clamping elastomer 300 and the annular pressing block 200 being coaxially set means that the axis of the clamping elastomer 300 and the axis of the annular pressing block 200 are the same axis, that is, the axes of the clamping elastomer 300, the annular pressing block 200, and the reaction cup installation cavity 110 are on the same straight line.

[0048] The positioning involved in the present invention means moving the reaction cup 400 to the axis of the reaction cup installation cavity 110, that is, positioning the reaction cup 400 at the central position of the clamping elastomer 300. This axis refers to the axis extending in the vertical direction. By using the clamping elastomer 300 to move the reaction cup 400 to the axis of the clamping elastomer 300, the reaction cup 400 can be moved to the axis of the reaction cup installation cavity 110, thereby achieving the positioning of the reaction cup 400.

[0049] As Figure 1 and Figure 2 shown, the base 100 is provided with 3 reaction cup installation cavities 110, but the number of reaction cup installation 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 introduced by taking the example of 1 base 100 provided with 3 reaction cup installation cavities 110.

[0051] In an exemplary embodiment, as Figure 3 , Figure 5 and Figure 6 shown, the top of the annular pressing block 200 has a first inclination angle 202 to guide the reaction cup 400 to smoothly enter the annular pressing block 200 and guide the reaction cup to approach the axis of the annular pressing block 200.

[0052] In an exemplary embodiment, as Figure 5 shown, two opposite planes 203 are provided on the side of the annular pressing block 200 to ensure that the annular pressing block 200 can be easily installed and removed in the base 100, thereby facilitating assembly and maintenance. The two planes 203 can be symmetrically arranged or asymmetrically arranged.

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

[0054] The annular pressing block 200 is directly placed into the reaction cup installation cavity 110 of the base 100. After assembly, rotate the pressing plate so that a part of the pressing plate presses on the outer edge of the upper surface of the annular pressing block 200 to prevent the annular pressing block 200 from detaching from the reaction cup installation cavity 110 of the base 100. During the rotation process, the pressing plate fits with the upper surface of the base 100.

[0055] In an exemplary embodiment, as Figure 6 shown, the annular pressing block 200 has a through cavity 204 that penetrates in the vertical direction. The through cavity 204 includes a first pressing block cavity 205 and a second pressing block cavity 206 that are sequentially distributed from top to bottom. And, the installation groove 201 is located at the bottom of the first pressing block cavity 205, that is, the installation groove 201 is recessed outward along the radial direction from the bottom of the first pressing block cavity 205.

[0056] The diameter of the first pressing block cavity 205 is larger than the diameter of the second pressing block cavity 206 and smaller than the diameter of the installation groove 201.

[0057] The top of the first pressing block cavity 205 has the above-mentioned first inclination angle 202.

[0058] The top of the second pressing block cavity 206 has a second inclination angle 207. The second inclination angle 207 plays a guiding role for the reaction cup 400 to avoid scratching the reaction cup 400 by the sharp part.

[0059] The bottom of the reaction cup 400 first enters the first pressing block cavity 205, then contacts the clamping elastic body 300, and squeezes the clamping elastic body 300. Here, the squeezing means squeezing the clamping elastic body 300 radially outward along the clamping elastic body 300, so that the inner surface of the clamping elastic body 300 expands radially outward, and further enables the bottom of the reaction cup 400 to penetrate into the clamping elastic body 300.

[0060] The annular pressing block 200 is generally processed from plastic parts. The inner surface of the through cavity 204 has an extremely low friction coefficient and has good wear resistance. Preferably, the annular pressing 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 friction coefficient can reduce the friction force between the reaction cup 400 and the inner surface of the through cavity 204 and reduce the wear of the reaction cup 400.

[0061] The base 100 is generally processed from metal parts and is easy to process. In addition, since some reaction systems require a warming function in the detection area, the base 100 also has good heat conduction performance. Preferably, the base 100 is made of 6061-T6 material.

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

[0063] The diameter d1 of the portion of the light-transmitting hole 101 near the arc transition angle 103 is smaller than the diameter d2 of the portion away from the arc transition angle 103, ensuring that the incident light and the outgoing light are as much as possible on a straight line and fixing and detecting the reaction cup 400, thereby improving the stability of the detection result.

[0064] In an exemplary embodiment, as Figure 2 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

[0065] During the process of the reaction cup 400 entering the reaction cup mounting cavity 110 downward, sufficient clearance needs to be reserved. The bottom of the reaction cup 400 is likely to rub against the inner wall of the light-transmitting hole 101, which may cause the outer surface of the bottom of the reaction cup 400 to be worn, resulting in inaccurate detection 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 prevent the inner wall of the light-transmitting hole 101 from having sharp parts that may cause scraping 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 embodiment, as Figure 2 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 installed in the limiting structure 102. The limiting structure 102 can ensure that the end face of the optical fiber is limited to a unique position, thereby ensuring the accuracy of the detection.

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

[0072] The function of the optical fiber 500 is to conduct light to one side of the reaction cup 400. In Figure 2 the embodiment, a three-in-one optical fiber is schemed, which can be split by the filter at the front end of the optical fiber 500, so that the reaction cup 400 receives light of the wavelength required for the reaction system.

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

[0074] Among them, the photosensor 600 can sense the absorbance of the light emitted by the optical fiber 500 and passing through the reaction cup 400. Specifically, the photosensor 600 can sense the intensity of the transmitted light and calculate the absorbance in combination with the known intensity of the incident light.

[0075] According to the design requirements, as Figure 7 shown, the diameter of the upper half 410 of the reaction cup 400 is generally 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 embodiment, as Figure 3 and Figure 4 shown, the reaction cup mounting cavity 110 includes a first mounting cavity 111 and a second mounting cavity 112, and the first mounting cavity 111 is located above the second mounting cavity 112.

[0077] The diameter of the first mounting cavity 111 matches the outer diameter of the annular pressing block 200, and the height of the first mounting cavity 111 is the same as the height of the annular pressing block 200 for mounting the annular pressing block 200.

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

[0079] In an exemplary embodiment, the diameter of the second cavity 206 of the pressing block is smaller than the diameter of the top of the second mounting cavity 112 to prevent the reaction cup 400 from contacting the top of the second mounting cavity 112, thereby reducing the wear of the reaction cup 400.

[0080] The operation of the reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to the embodiments of the present invention will be 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 pressing block (that is, not located in the mounting groove 201).

[0082] The robotic arm of the coagulation analyzer grabs the reaction cup 400 above the reaction cup mounting cavity 110 of the base 100, that is, above the annular pressing block 200.

[0083] Since the top of the annular pressing block 200 has a first inclination angle 202, even if the reaction cup 400 has some deviation from the axis of the annular pressing block 200, it can enter the first cavity 205 of the pressing block under the guidance of the first inclination angle 202.

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

[0085] If the axis of the reaction cup 400 has a large deviation 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 extrude the inner surface of the clamping elastomer 300 in the radial direction. The extruded clamping elastomer 300 will apply an elastic restoring force to the guiding position 421 of the reaction cup 400 to push the reaction cup 400 to move to a state where the axis of the reaction cup 400 is substantially aligned with the axis of the clamping elastomer 300, that is, the preliminary positioning of the reaction cup 400 in the horizontal direction is realized.

[0086] Regardless of whether there is a deviation when the reaction cup 400 starts to contact the clamping elastomer 300, the diameter of the bottom of the reaction cup 400 is larger than the inner diameter of the clamping elastomer 300 in the natural state, so that the inner surface of the clamping elastomer 300 can contact the outer surface of the reaction cup 400. Since the friction coefficient of the inner surface of the clamping elastomer 300 is extremely small, it can reduce the wear of the outer surface of the reaction cup, thereby realizing self-lubrication.

[0087] As the reaction cup 400 continues to move downward, the bottom of the reaction cup 400 begins to pass through the light passing hole 101 and crosses the light passing hole 101. At the same time, the upper half 410 of the reaction cup 400 with a larger diameter 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 elastomer 300, it will cause different degrees of extrusion of the clamping elastomer 300, so that the clamping elastomer 300 generates an elastic restoring force in the horizontal direction to push the reaction cup 400 to a state where the axis of the reaction cup 400 is aligned with the axis of the clamping elastomer 300. Figure 8For example, if the axis of the reaction cup 400 is closer to side A than the axis of the clamping elastomer 300, during the process of the reaction cup 400 squeezing the clamping elastomer 300, the part of the clamping elastomer 300 on side A will be squeezed more than the part on side B. As a result, an elastic restoring force of the clamping elastomer 300 from side A to side B will be generated to push the reaction cup 400 towards side B until the axes of the reaction cup 400 and the clamping elastomer 300 are aligned. When the axes of the two are aligned, the degrees of squeezing of the clamping elastomer 300 in all directions in the horizontal direction are the same, so that the elastic restoring forces received by the reaction cup 400 in all directions in the horizontal direction are the same. At this time, the reaction cup 400 no longer moves along the horizontal direction, thus maintaining the state where the axes of the two are aligned, and thereby positioning the reaction cup 400 at the central position of the clamping elastomer 300.

[0089] Among them, in the state where the axes of the two are aligned, as the reaction cup 400 continues to move downward, since the diameter of the part of the reaction cup 400 in contact with the clamping elastomer 300 is getting larger and larger, the degree of squeezing of the reaction cup 400 on the clamping elastomer 300 will become greater and greater, causing more parts (i.e., a part of the second part of the clamping elastomer 300) or all (i.e., all of the second part of the clamping elastomer 300) of the clamping elastomer 300 to be squeezed into the installation groove 201. If the diameter of the reaction cup 400 is relatively small, a part of the second part of the clamping elastomer 300 may still remain in the first cavity 205 of the pressing block. If the diameter of the reaction cup 400 is large, all of the clamping elastomer 300 may be squeezed into the installation groove 201.

[0090] When the bottom of the reaction cup 400 reaches the bottom of the second installation cavity 112, the reaction cup 400 no longer moves downward.

[0091] After the reaction cup 400 is fixed, the light emitted by the optical fiber 500 passes through the light passing hole 101 and irradiates the reaction cup 400, and then passes through the reaction cup 400. The transmitted light passing through the reaction cup 400 reaches the optical sensor 600 through the light passing hole 101, thus completing the detection.

[0092] For the convenience of explanation and to precisely define the appended claims, the terms "upper", "lower", "inner", "outer", "above", "below", "upper", "lower", "upward", "downward", "front", "rear", "behind", "inner side", "outer side", "inward", "outward", "inside", "outside", "inner", "outer", "forward", "backward" are used to describe the features of the exemplary specific embodiments with reference to the positions of these features shown in the accompanying drawings.

[0093] The foregoing description of the specific exemplary embodiments of the present invention has been presented for purposes of illustration and description. The foregoing description is not intended to be exhaustive nor to limit the invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain specific principles of the invention and its practical application so as to enable others skilled in the art to make and utilize various exemplary embodiments of the invention and its various 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, Comprising: A base provided with a reaction cup mounting cavity; An annular pressing block disposed at the upper part of the reaction cup mounting cavity and having a mounting groove on its inner surface, the annular pressing block being coaxially arranged with the reaction cup mounting cavity; and A clamping elastomer mounted in the mounting groove and coaxially arranged with the annular pressing block, the inner surface of the clamping elastomer being able to contact the outer surface of the reaction cup during the process of putting the reaction cup in and reducing the wear on the outer surface of the reaction cup, thereby achieving self-lubrication; Wherein, the clamping elastomer can elastically deform along the radial direction to clamp the reaction cup at the central position of the clamping elastomer, thereby realizing the positioning of the reaction cup.

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

05.

3. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 1, characterized in that, The material of the clamping elastomer is selected from Teflon, nitrile rubber or fluororubber.

4. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 1, characterized in that A plurality of the reaction cup mounting cavities are provided.

5. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 1, characterized in that, The annular pressing block has a through cavity penetrating in the vertical direction, the through cavity includes a first cavity of the pressing block and a second cavity of the pressing block which are distributed in sequence from top to bottom, and the mounting groove is located at the bottom of the first cavity of the pressing block; The diameter of the first cavity of the pressing block is larger than the diameter of the second cavity of the pressing block and smaller than the diameter of the mounting groove.

6. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 5, characterized in that, The reaction cup mounting cavity includes a first mounting cavity and a second mounting cavity, the first mounting cavity being located above the second mounting cavity; The diameter of the second cavity of the pressing block is smaller than the diameter of the top of the second mounting cavity to prevent the reaction cup from contacting the top of the second mounting cavity, thereby reducing the wear of the reaction cup.

7. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 1, characterized in that, The top of the annular pressing block has a first inclination angle.

8. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 5, characterized in that, The top of the second cavity of the pressing block has a second inclination angle.

9. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 1, characterized in that, The base further has: A light passing hole extending along the horizontal direction and penetrating the base and the reaction cup mounting cavity.

10. The reaction cup guiding and self-lubricating mechanism applied to a coagulation analyzer according to claim 9, characterized in that, The inner wall of the light passing hole has an arc transition angle.

Images