A continuous puncture mechanism and biological sample detection device

Abstract

The utility model discloses a kind of continuous puncture mechanism and biological sample detection equipment, continuous puncture mechanism includes puncture module, including driving assembly and puncture component, driving assembly includes rotor shaft, and the rotation driving mechanism of transmission connection with rotor shaft, puncture component includes the multiple puncture needles of sequentially side by side arrangement along the axial direction of rotor shaft, multiple puncture needles are located at the outer circumferential side of rotor shaft, multiple puncture needles extend along the radial direction of rotor shaft and are slidably arranged, rotor shaft is equipped with and multiple cam parts are arranged at the axial direction interval, multiple cam parts are eccentrically arranged, two adjacent cam parts are arranged at the circumferential direction interval of rotor shaft and are misaligned, cam part and puncture needle one-to-one corresponding abut, rotation driving mechanism drives rotor shaft rotation, to make multiple cam parts drive multiple puncture needles reciprocating movement along the radial direction of rotor shaft, by controlling the starting angle and rotation angle of rotor shaft, continuous puncture is carried out to any position and any number of holes, and rotor shaft rotation speed is fast, and puncture efficiency is high.

Description

Technical Field

[0001] This utility model relates to the technical field of biological sample experiments, specifically a continuous puncture mechanism and biological sample detection equipment. Background Technology

[0002] A blood typing card is a tool used for blood typing, typically employing the microcolumn gel method. The blood sample to be tested reacts with antiserum on the card, and the blood type is determined by observing the result. This method is efficient and accurate, and is widely used in blood transfusions and clinical treatment. In practical applications, the microcolumn opening of the blood typing card is sealed with an aluminum foil, requiring puncture to facilitate further processing.

[0003] Existing aluminum film puncture methods typically employ a fixed number of needles for a single puncture, or a gripper to select fixtures with varying numbers of needles for puncture. However, the puncture spacing between different micropillar gel cards varies, and each micropillar on the gel card detects different antigens / antibodies. Depending on the experiment, the number and location of micropillars to be punctured on a single card will differ, requiring skipping some micropillars. The fixed number of needles for a single puncture approach is inflexible, wasteful, and requires significant puncture force, placing high demands on the drive mechanism. Punctures one hole at a time, on the other hand, result in long puncture times and low efficiency. Using a gripper to select different fixtures requires multiple different puncture fixtures, occupying considerable space, and changing fixtures for each puncture leads to low puncture efficiency. Furthermore, it requires an additional gripping and releasing mechanism, resulting in a complex structure and high cost. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention provides a continuous puncture mechanism and a biological sample testing device, solving the problems of low flexibility and low puncture efficiency in existing puncture mechanisms.

[0005] A continuous puncture mechanism according to a first aspect of the present invention includes:

[0006] A puncture module includes a drive assembly and a puncture assembly. The drive assembly includes a rotor shaft and a rotary drive mechanism that is pulverized to the rotor shaft. The rotor shaft has a plurality of cam portions arranged at intervals along the axial direction. The plurality of cam portions are eccentrically arranged with respect to the axial direction of the rotor shaft. Adjacent cam portions are staggered circumferentially along the rotor shaft. The puncture assembly includes a plurality of puncture needles arranged side by side in sequence along the axial direction of the rotor shaft. The plurality of puncture needles are located on the outer periphery of the rotor shaft and extend radially along the rotor shaft and are slidably arranged. The plurality of puncture needles are connected one-to-one with the plurality of cam portions. The rotary drive mechanism is used to drive the rotor shaft to rotate, so that the plurality of cam portions drive the plurality of puncture needles to reciprocate radially along the rotor shaft.

[0007] A continuous puncture mechanism according to an embodiment of the present invention has at least the following beneficial effects:

[0008] This invention features multiple misaligned eccentric cams on a rotor shaft. Different cams drive different puncture needles to slide, so that each time the rotor shaft rotates by an angle, a corresponding puncture needle is pushed out radially and then returned. By controlling the starting angle and rotation angle of the rotor shaft, the position and number of the pushed-out and returned puncture needles can be controlled, thus controlling the position and number of holes obtained through puncture. The control logic is simple and highly flexible. Since there is no need to change the puncture tooling and the rotor shaft rotates very quickly, efficient and rapid continuous puncture can be achieved.

[0009] According to some embodiments of the present invention, the plurality of cam portions each include a boss protruding from the outer wall of the rotor shaft, and the plurality of bosses are smoothly connected to the outer wall of the rotor shaft.

[0010] According to some embodiments of the present invention, the cam portion is provided with an abutting surface, and the puncture needle abuts against the abutting surface.

[0011] According to some embodiments of the present invention, the drive assembly further includes a reset mechanism for moving the plurality of puncture needles toward the rotor shaft.

[0012] According to some embodiments of the present invention, the puncture module further includes a base for mounting the drive assembly and the puncture assembly. The base is provided with a plurality of guide channels extending radially along the rotor shaft, and a plurality of puncture needles are slidably disposed within the plurality of guide channels.

[0013] According to some embodiments of the present invention, the reset mechanism includes a plurality of elastic elements that are elastically connected between a plurality of puncture needles and a plurality of guide channels, and the plurality of elastic elements apply an elastic force toward the rotor shaft to the puncture needles.

[0014] According to some embodiments of the present invention, the elastic element includes a spring sleeved on the puncture needle, the puncture needle is provided with a first abutting portion that abuts against one end of the elastic element, the guide channel is provided with a second abutting portion that abuts against the other end of the elastic element, and the elastic element is located between the first abutting portion and the second abutting portion.

[0015] According to some embodiments of the present invention, the first abutting part is a first step provided on the outer peripheral wall of the puncture needle, and the second abutting part is a second step provided on the inner peripheral wall of the guide channel.

[0016] According to some embodiments of the present invention, a moving module is also included. The moving module includes a translation component and a lifting component. The puncture module is installed on the lifting component, and the lifting component is used to drive the puncture module to move vertically. The lifting component is installed on the translation component, and the translation component is used to drive the lifting component to move laterally.

[0017] A biological sample detection device according to a second aspect of the present invention includes:

[0018] The aforementioned continuous puncture mechanism.

[0019] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 A schematic diagram of an embodiment of a continuous puncture mechanism provided by this utility model;

[0022] Figure 2 An exploded view of an embodiment of a continuous puncture mechanism provided by this utility model;

[0023] Figure 3 A continuous puncture mechanism provided by this utility model, wherein the puncture module is shown in a cross-sectional view;

[0024] Figure 4 A schematic diagram of the structure of the rotor shaft is provided in the continuous puncture mechanism of this utility model;

[0025] Icon labels:

[0026] Drive assembly 100; rotor shaft 110; cam portion 111; boss 112; contact surface 113; rotary drive mechanism 120; rotary timing belt 121; rotary drive wheel 122; driven wheel 123; rotary motor 124;

[0027] Puncture assembly 200; puncture needle 210; first abutment part 211; reset mechanism 220; elastic element 221;

[0028] Base 300; guide channel 310; second abutment part 311; base plate 320;

[0029] Translation assembly 400; translation drive wheel 410; translation motor 420; idler wheel 430; translation timing belt 440; translation guide rail 450; belt pressure block 460;

[0030] Lifting assembly 500; fixed plate 510; lifting motor 520; lifting guide rail 530; gear 540; rack 550;

[0031] Sensing component 600; sensor 610; sensing element 620. Detailed Implementation

[0032] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0033] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0035] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0036] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are some embodiments of this utility model, not all embodiments.

[0037] A blood typing card is a tool used for blood typing, typically employing the microcolumn gel method. The blood sample to be tested reacts with antiserum on the card, and the blood type is determined by observing the result. This method is efficient and accurate, and is widely used in blood transfusions and clinical treatment. In practical applications, the microcolumn opening of the blood typing card is sealed with an aluminum foil, requiring puncture to facilitate further processing.

[0038] Existing aluminum film puncture methods typically employ a fixed number of needles for a single puncture, or a gripper to select fixtures with varying numbers of needles for puncture. However, the puncture spacing between different micropillar gel cards varies, and each micropillar on the gel card detects different antigens / antibodies. Depending on the experiment, the number and location of micropillars to be punctured on a single card will differ, requiring skipping some micropillars. The fixed number of needles for a single puncture approach is inflexible, wasteful, and requires significant puncture force, placing high demands on the drive mechanism. Punctures one hole at a time, on the other hand, result in long puncture times and low efficiency. Using a gripper to select different fixtures requires multiple different puncture fixtures, occupying considerable space, and changing fixtures for each puncture leads to low puncture efficiency. Furthermore, it requires an additional gripping and releasing mechanism, resulting in a complex structure and high cost.

[0039] To address the aforementioned problems, this invention proposes a continuous puncture mechanism and a biological sample testing device, which can effectively solve the problems of low flexibility and low puncture efficiency in existing puncture mechanisms.

[0040] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The following are embodiments of the continuous puncture mechanism of this utility model:

[0041] The continuous puncture mechanism of this utility model includes a puncture module and a moving module. The puncture module is used to continuously puncture the target puncture position, and the moving module is used to drive the puncture module to move in space.

[0042] Reference Figure 1 and Figure 2 The moving module includes a translation component 400 and a lifting component 500. The puncture module is installed on the lifting component 500, which is used to drive the puncture module to move up and down. The lifting component 500 is installed on the translation component 400, which is used to drive the lifting component 500 to move horizontally.

[0043] The translation component 400 includes a translation drive wheel 410, a translation motor 420, an idler wheel 430, and a horizontally extending translation timing belt 440. The translation conveyor belt is connected between the translation drive wheel 410 and the idler wheel 430. The translation drive wheel 410 and the translation motor 420 are fixedly connected. The translation motor 420 is used to drive the translation drive wheel 410 to rotate, thereby driving the translation timing belt 440 to rotate. A horizontally extending translation guide rail 450 is provided on the side of the translation timing belt 440, and a belt pressure block 460 is provided on the translation timing belt 440.

[0044] The lifting assembly 500 is connected to the belt pressure block 460. The lifting assembly 500 is slidably mounted on the translation guide rail 450. The belt pressure block 460 is moved by the translation synchronous belt 440, which provides driving force for the sliding of the lifting assembly 500. The translation guide rail 450 guides the lifting assembly 500, realizing the horizontal movement of the lifting assembly 500.

[0045] The lifting assembly 500 includes a fixed plate 510, a lifting motor 520, a lifting guide rail 530, a gear 540, and a rack 550. The fixed plate 510 is fixedly connected to the belt pressure block 460 and slidably mounted on the translation guide rail 450. The fixed plate 510 is provided with a rack 550 that is arranged vertically. The lifting motor 520 is connected to the gear 540, and the gear 540 meshes with the rack 550. The rotation of the lifting motor 520 drives the gear 540 to rotate, thereby causing it to roll along the rack 550, so that the lifting motor 520 moves vertically relative to the fixed plate 510.

[0046] A lifting guide rail 530 is provided on the side of the rack 550, which is arranged vertically. The puncture module is slidably arranged on the lifting guide rail 530 and connected to the lifting motor 520. The lifting motor 520 provides driving force for the lifting of the puncture module, and the lifting guide rail 530 guides the puncture module to achieve the lifting of the puncture module.

[0047] By combining the translation component 400 and the lifting component 500, the puncture module can be moved in space. The translation component 400 drives the lifting component 500 to move horizontally to the target puncture position, and the lifting component 500 drives the puncture module to descend. After the puncture module performs continuous punctures through multiple holes, the lifting component 500 drives the puncture module to rise, and the translation component 400 drives the lifting component 500 back to the initial position, waiting for the next puncture.

[0048] In other embodiments, the moving module may take other forms, such as a multi-joint robotic arm, as long as it can move the puncture module and the movement stroke covers the target puncture position.

[0049] Reference Figure 3As shown, in this embodiment, the puncture module includes a drive component 100 and a puncture component 200, which are mounted on the lifting component 500 via a base plate 320. The base plate 320 is fixedly connected to the lifting motor 520 and is driven by the lifting motor 520 to move up and down.

[0050] The drive assembly 100 includes a rotor shaft 110 and a rotary drive mechanism 120 that is connected to the rotor shaft 110 for transmission. The rotary drive mechanism 120 is used to drive the rotor shaft 110 to rotate. In this embodiment, the rotary drive mechanism 120 includes a rotary synchronous belt 121, a rotary driving wheel 122, a driven wheel 123, and a rotary motor 124. The rotary synchronous belt 121 is connected between the rotary driving wheel 122 and the driven wheel 123. The rotary driving wheel 122 is connected to the rotary motor 124, and the rotor shaft 110 is connected to the driven wheel 123. This allows the rotary motor 124 to drive the rotary synchronous belt 121 to rotate, thereby driving the rotor shaft 110 to rotate around its own axial direction. In this embodiment, the rotary drive mechanism 120 and the rotor shaft 110 are installed on the same side of the base plate 320 and are spaced vertically. They are driven to move up and down synchronously by the base plate 320, saving space and improving integration.

[0051] Among them, reference Figure 4 As shown, the rotor shaft 110 is provided with a plurality of cam portions 111 arranged at intervals along the axial direction of the rotor shaft 110. The plurality of cam portions 111 are eccentrically arranged with respect to the axial direction of the rotor shaft 110. Adjacent cam portions 111 are staggered along the circumferential direction of the rotor shaft 110. In this embodiment, the plurality of cam portions 111 include a plurality of bosses 112 protruding from the outer wall of the rotor shaft 110. The plurality of bosses 112 are evenly spaced along the circumferential direction of the rotor shaft 110. The plurality of bosses 112 are smoothly connected to the outer wall of the rotor shaft 110 along the axial direction of the rotor shaft 110. The outer periphery of the cam portion 111 is provided with an abutment surface 113.

[0052] Reference Figure 3 and Figure 4 As shown, the puncture assembly 200 includes a plurality of puncture needles 210 arranged sequentially along the axial direction of the rotor shaft 110. The plurality of puncture needles 210 are located on the outer periphery of the rotor shaft 110 and extend radially along the rotor shaft 110 and are slidably arranged. The plurality of puncture needles 210 are connected to a plurality of cam portions 111 in a one-to-one correspondence. In this embodiment, one end of the puncture needle 210 near the rotor shaft 110 abuts against the contact surface 113 on the outer periphery of the cam portion 111. When the rotation drive mechanism 120 drives the rotor shaft 110 to rotate, the contact surface 113 of the cam portion 111 slides relative to one end of the puncture needle 210. Since the cam portion 111 is eccentrically arranged, when the cam portion 111 rotates with the rotor shaft 110, it pushes the puncture needle 210 to reciprocate along the radial direction of the rotor shaft 110.

[0053] During continuous puncture, as the rotor shaft 110 rotates, multiple bosses 112 sequentially push multiple puncture needles 210 to reciprocate one by one. This differs from multiple puncture needles 210 performing a single puncture at the same time. The puncture resistance is low, and the rotary drive mechanism 120 only requires a small force to achieve puncture of multiple holes. This reduces the strength requirements of the rotor shaft 110 and the strength and performance requirements of the rotary drive mechanism 120, which helps to reduce costs and extend the service life of the components.

[0054] In some other embodiments, the cam portion 111 may be of other shapes, such as an ellipse that is axially eccentric to the rotor shaft 110, and the connection between the puncture needle 210 and the cam portion 111 may be in other forms, such as a grooved track provided on the outer periphery of the cam portion 111 and a locking block that slides into the grooved track at one end of the puncture needle 210, or the puncture needle 210 being hinged to the top of the boss 112 of the cam portion 111.

[0055] If the number of puncture needles 210 in the puncture assembly 200 is N, the deflection angle between two adjacent bosses 112 should be less than 360 / N degrees, so that during one rotation of the rotor shaft 110, each puncture needle 210 can be driven to reciprocate once along the radial direction of the rotor shaft 110. When the rotor shaft 110 is at any angle, at most one puncture needle 210 is pushed by the cam part 111. Every time the rotor shaft 110 rotates through the deflection angle, one puncture needle 210 completes one reciprocating movement along the radial direction of the rotor shaft 110, that is, completes the puncture of one hole.

[0056] The rotation control method for rotor shaft 110 is as follows: Before the puncture module descends, it controls rotor shaft 110 to rotate from its initial state by a first angle in advance, thereby controlling the starting hole position of continuous puncture. After the puncture module descends, it controls rotor shaft 110 to rotate by a second angle, thereby controlling the number of puncture holes obtained by continuous puncture and completing one continuous puncture. After the puncture module rises, rotor shaft 110 returns to its initial state and waits for the next puncture.

[0057] In different application scenarios, by changing the first angle and the second angle, continuous puncture action can be achieved on any number of holes at any position. This method only requires controlling one motor to achieve different continuous puncture effects. The control logic is simple, highly flexible, and suitable for a variety of puncture needs.

[0058] Regarding the setting of the first and second angles: Assuming that the a-th to b-th holes need to be punctured (a≤b≤N), the first angle is a times the deflection angle, so that when the puncture module descends, the a-th puncture needle 210 is pushed first to reciprocate when the rotor shaft 110 rotates. The second angle is (ba) times the deflection angle, so that when the rotor shaft 110 rotates, the a-th to b-th puncture needles are pushed in sequence by the corresponding multiple cams 111 on the rotor shaft 110 to reciprocate, thereby completing the puncture of the a-th to b-th holes.

[0059] Since the rotary drive mechanism 120 drives the rotor shaft 110 to rotate through the rotary motor 124, all the puncture needles 210 can reciprocate once with one rotation of the rotor shaft 110. The rotary motor 124 rotates for a very short time, which can greatly shorten the continuous puncture time and greatly improve the puncture efficiency. In addition, for the continuous puncture requirements of different positions and different numbers of holes, only the rotation of the rotary motor 124 needs to be changed, without the need to change the puncture tooling, which can achieve efficient and flexible continuous puncture.

[0060] Furthermore, in this embodiment, both the cam portion 111 and the puncture needle 210 are provided with eight, which can complete the continuous puncture of up to eight holes, suitable for puncture of eight-hole blood cards. For the need for a larger number of holes and other puncture needs with different hole spacing, the upper limit of the number of holes for continuous puncture and the hole spacing can be changed by changing the number of cam portions 111 on the rotor shaft 110 and the spacing of the multiple cam portions 111 along the axial direction of the rotor shaft 110. Only the puncture module needs to be replaced.

[0061] In this embodiment, the puncture module can be detachably installed on the lifting assembly 500 to enable flexible replacement of the puncture module, thereby changing the upper limit of the number of holes and the hole spacing for continuous puncture. Different puncture requirements can be achieved through similar puncture modules, expanding the application range of the continuous puncture mechanism. The moving module and multiple puncture needles 210 can be reused, improving utilization.

[0062] The puncture module also includes a base 300, which is used to install the drive assembly 100 and the puncture assembly 200. The base 300 is fixedly installed on the base plate 320. The rotor shaft 110 is rotatably installed on the base 300. The base 300 is provided with multiple guide channels 310. The multiple guide channels 310 are located on the outer periphery of the rotor shaft 110, arranged at intervals along the axial direction of the rotor shaft 110 and extending radially along the rotor shaft 110. Multiple puncture needles 210 are slidably disposed in the multiple guide channels 310. The guide channels 310 guide the puncture needles 210, so that the path of the puncture needles 210 is stable during reciprocating movement and does not deflect in the circumferential direction.

[0063] In this embodiment, the guide channel 310 and the puncture needle 210 are located on the lower side of the rotor shaft 110 and extend in the vertical direction. The puncture needle 210 slides in the vertical direction. Since the aluminum film is generally set on the top surface of the sample, the vertical movement of the puncture needle 210 facilitates the puncture of the aluminum film. In some other embodiments, the guide channel 310 and the puncture needle 210 can be set in other directions, such as in the horizontal direction.

[0064] Since the puncture needle 210 is arranged vertically and one end of the puncture needle 210 abuts against the contact surface 113 of the boss 112, after the puncture needle 210 is pushed away from the rotor shaft 110 by the boss 112, it cannot return to the rotor shaft 110 due to gravity. Therefore, a reset mechanism 220 is required to move the puncture needle 210 towards the rotor shaft 110 to ensure that the puncture needle 210 can reciprocate along the guide channel 310.

[0065] The reset mechanism 220 of this embodiment includes a plurality of elastic members 221 elastically connected to the puncture needle 210. The elastic members 221 apply a spring force toward the rotor shaft 110 to the puncture needle 210 so that after the puncture needle 210 is pushed away from the rotor shaft 110 by the boss 112 along the guide channel 310, it moves toward the rotor shaft 110 under the action of the spring force to achieve automatic reset.

[0066] In other embodiments, the reset mechanism 220 may take other forms, such as by setting an electromagnet on the rotor shaft 110 to reset the multiple puncture needles 210 by magnetic force.

[0067] In this embodiment, the elastic element 221 is a spring, which is sleeved on the puncture needle 210. One end of the puncture needle 210 is provided with a first abutting part 211 that abuts against one end of the spring, and the guide channel 310 is provided with a second abutting part 311 that abuts against the other end of the spring. In this embodiment, the first abutting part 211 is a first step protruding from the puncture needle 210. The first step is an annular step structure. The second abutting part 311 is a second step protruding from the inner wall of the guide channel 310. The second step is an annular step structure. The first step and the second step have opposing annular surfaces. The two ends of the spring abut against the opposing annular surfaces on the first step and the second step, respectively.

[0068] In this embodiment, the continuous puncture mechanism further includes a sensing component 600, which includes a sensor 610 and a sensing plate 620. In this embodiment, the sensor 610 is a photoelectric switch, which is fixed on the base plate 320. The sensing plate 620 is fixed on one end of the rotor shaft 110. The sensing component 600 is used to monitor the rotation angle of the rotor shaft 110.

[0069] This invention also proposes a biological sample testing device, including the aforementioned continuous puncture mechanism.

[0070] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0071] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A continuous puncture mechanism, characterized in that, include: A puncture module includes a drive assembly and a puncture assembly. The drive assembly includes a rotor shaft and a rotary drive mechanism that is pulverized to the rotor shaft. The rotor shaft has a plurality of cam portions arranged at intervals along the axial direction. The plurality of cam portions are eccentrically arranged with respect to the axial direction of the rotor shaft. Adjacent cam portions are staggered circumferentially along the rotor shaft. The puncture assembly includes a plurality of puncture needles arranged side by side in sequence along the axial direction of the rotor shaft. The plurality of puncture needles are located on the outer periphery of the rotor shaft and extend radially along the rotor shaft and are slidably arranged. The plurality of puncture needles are connected one-to-one with the plurality of cam portions. The rotary drive mechanism is used to drive the rotor shaft to rotate, so that the plurality of cam portions drive the plurality of puncture needles to reciprocate radially along the rotor shaft.

2. The continuous puncture mechanism according to claim 1, characterized in that: Each of the multiple cam portions includes a boss protruding from the outer wall of the rotor shaft, and the multiple bosses are smoothly connected to the outer wall of the rotor shaft.

3. The continuous puncture mechanism according to claim 1, characterized in that: The outer periphery of the cam portion is provided with an abutting surface, and the puncture needle abuts against the abutting surface.

4. The continuous puncture mechanism according to claim 1, characterized in that: The drive assembly also includes a reset mechanism for moving the plurality of puncture needles toward the rotor shaft.

5. The continuous puncture mechanism according to claim 4, characterized in that: The puncture module also includes a base for mounting the drive assembly and the puncture assembly. The base is provided with a plurality of guide channels extending radially along the rotor shaft, and a plurality of puncture needles are slidably disposed within the plurality of guide channels.

6. The continuous puncture mechanism according to claim 5, characterized in that: The reset mechanism includes multiple elastic elements that are elastically connected between the multiple puncture needles and the multiple guide channels, and the multiple elastic elements apply an elastic force to the puncture needles toward the rotor shaft.

7. The continuous puncture mechanism according to claim 6, characterized in that: The elastic element includes a spring sleeved on the puncture needle. The puncture needle has a first abutting portion that abuts against one end of the elastic element. The guide channel has a second abutting portion that abuts against the other end of the elastic element. The elastic element is located between the first abutting portion and the second abutting portion.

8. The continuous puncture mechanism according to claim 7, characterized in that: The first abutting part is a first step provided on the outer peripheral wall of the puncture needle, and the second abutting part is a second step provided on the inner peripheral wall of the guide channel.

9. The continuous puncture mechanism according to any one of claims 1 to 8, characterized in that: It also includes a moving module, which includes a translation component and a lifting component. The puncture module is mounted on the lifting component, which is used to drive the puncture module to move vertically. The lifting component is mounted on the translation component, which is used to drive the lifting component to move laterally.

10. A biological sample detection device, characterized in that: Includes the continuous puncture mechanism as described in any one of claims 1 to 9.

Images