Sampling needle conveying device

Abstract

The utility model discloses a sampling needle conveying device, which belongs to the technical field of medical equipment and comprises a power chamber, the outer side wall of the power chamber is fixedly connected with a stepping motor, the output end of the stepping motor is fixedly connected with a rotating shaft, the inner side wall of the power chamber is rotatably connected with a driven shaft, and the outer side wall of the rotating shaft is in transmission connection with a synchronous belt. One end of the synchronous belt away from the rotating shaft is in transmission connection with the outer side wall of the driven shaft. According to the sampling needle conveying device, through cooperative use of a synchronous belt, a coupler shell, a baffle, a resistance spring, a limiting plate, a clamping block and a moving block, the clamping block can be quickly released when the moving block suddenly suffers from resistance in the moving process, and the situation that the moving block cannot be stopped in time when a sampling needle body continuously descends to abut against a hard object in the sampling process is avoided; therefore, the sampling needle main body is prevented from being damaged, the frequency of replacing the sampling needle main body by a worker is reduced, and the sampling analysis efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, and particularly to a sampling needle conveying device. Background Art

[0002] The fully automatic blood analyzer is an advanced medical device widely used in laboratories and medical institutions for rapid and accurate analysis of blood samples. This device integrates advanced optical, electronic and biochemical technologies to automatically complete the detection of multiple blood parameters such as blood cell count, hemoglobin determination, platelet count, etc. The use of the fully automatic blood analyzer in clinical medicine has greatly improved laboratory work efficiency, reduced human errors, and provided doctors with rapid and reliable blood test data, which helps to diagnose and treat diseases more accurately.

[0003] In a fully automatic blood analyzer, the sampling needle is a key component responsible for collecting blood samples from a test tube. During the collection process from the test tube, the sampling needle will continue to move downward so that the bottom of the sampling needle can reach the bottom of the test tube, thereby collecting blood.

[0004] However, during the collection process, although the sampling needle usually follows precise steps in its work, it may be affected by the rotation stop position facing the test tube placement plate and the size of the test tube, causing the sampling needle to hit hard objects such as the placement plate and be unable to stop moving down. In this case, the continuous downward movement of the sampling needle may cause the sampling needle to bend or be damaged, and even affect the normal operation of the entire blood analyzer;

[0005] In order to solve the above problems, a sampling needle transport device is proposed in the present application. Summary of the invention

[0006] The utility model aims at the technical problems existing in the prior art and provides a sampling needle conveying device.

[0007] The technical solution of the utility model for solving the above-mentioned technical problems is as follows: a sampling needle conveying device comprises a power chamber, the outer side wall of the power chamber is fixedly connected with a stepper motor, the output end of the stepper motor is fixedly connected with a rotating shaft, the inner side wall of the power chamber is rotatably connected with a driven shaft, the outer side wall of the rotating shaft is transmission-connected with a synchronous belt, the end of the synchronous belt away from the rotating shaft is transmission-connected with the outer side wall of the driven shaft, the outer side wall of the synchronous belt is fixedly connected with a coupler housing, the inner side wall of the coupler housing is rotatably connected with a baffle, the inner bottom wall of the coupler housing is fixedly connected with a resistance spring, the end of the resistance spring away from the inner side wall of the coupler housing is fixedly connected with the bottom of the baffle, the inner bottom wall of the coupler housing is fixedly connected with a limiting plate, the inner side wall of the limiting plate is slidably connected with a card block, and the outer side wall of the card block is fixedly connected with a moving block.

[0008] A connecting hole is formed through the top of the moving block, and the moving block is fixedly connected to a moving rod through the connecting hole. By setting the connecting hole and the moving rod, the connecting hole facilitates positioning of the moving rod, thereby preventing the moving rod from breaking at the connection with the moving block during use.

[0009] The inner wall of the power chamber is fixedly connected with a connecting plate, and the outer wall of the connecting plate is fixedly connected with a sliding sleeve. By providing the sliding sleeve, the moving rod is easily protected to prevent the moving rod from scratching the inner wall of the power chamber during the up and down movement, thereby preventing the moving rod from being damaged.

[0010] The inner side wall of the power chamber is fixedly connected with a slide rail, and the slide rail is provided to facilitate limiting the sliding direction of the moving block.

[0011] The outer side wall of the slide rail is penetrated with a slide groove, and the slide groove is provided to reduce the friction between the moving parts and the slide rail, thereby reducing the friction loss of the slide rail.

[0012] The slide rail is slidably connected to a slider via a slide groove, and an outer wall of the slider away from the slide groove is fixedly connected to an outer wall of the moving block. By setting the slider to be fixedly connected to the outer wall of the moving block, direct contact between the outer wall of the moving block and the outer wall of the slide rail is avoided, thereby avoiding wear of the moving block.

[0013] The top of the moving rod is rotatably connected to a rocker arm, and one end of the rocker arm away from the moving rod is fixedly connected to a sampling needle body. By arranging the rocker arm and the sampling needle body, it is convenient for the device to sample serum plasma.

[0014] The beneficial effects of this utility model are:

[0015] Through the coordinated use of the synchronous belt, coupler housing, baffle, resistance spring, limit plate, card block and moving block, when the moving block suddenly encounters resistance during movement, the card block can be quickly released to prevent the moving block from being unable to stop in time when the sampling needle body hits hard objects during continuous descent for sampling, causing the sampling needle body to bend, thereby avoiding damage to the sampling needle body, thereby reducing the number of times the staff replaces the sampling needle body and improving the efficiency of sampling analysis.

[0016] By providing a slide rail, a slide groove, and a slider, the moving block is prevented from directly contacting the outer wall of the slide rail, thereby preventing the outer wall of the moving block from being worn out during long-term use, thereby extending the use time of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the power chamber of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the resistance spring and related parts of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the slider and related parts of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Power chamber; 2. Stepper motor; 3. Rotating shaft; 4. Driven shaft; 5. Synchronous belt; 6. Coupler housing; 7. Baffle; 8. Resistance spring; 9. Limit plate; 10. Block; 11. Moving block; 12. Connecting hole; 13. Moving rod; 14. Connecting plate; 15. Sliding sleeve; 16. Sliding rail; 17. Sliding groove; 18. Sliding block; 19. Rocker arm; 20. Sampling needle body. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0024] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "plurality" means two or more, unless otherwise clearly and specifically defined.

[0025] In the description of the present application, the term "for example" is used to mean "used as an example, illustration or description". Any embodiment described as "for example" in the present application is not necessarily to be interpreted as being more preferred or advantageous than other embodiments. In order to enable any technician in the field to implement and use the present utility, the following description is given. In the following description, details are listed for the purpose of explanation. It should be understood that a person of ordinary skill in the art can recognize that the present utility can be implemented without using these specific details. In other examples, well-known structures and processes will not be elaborated in detail to avoid unnecessary details that make the description of the present utility obscure. Therefore, the present utility is not intended to be limited to the embodiments shown, but is consistent with the widest range of principles and features disclosed in the present application.

[0026] Reference Figure 1-3A sampling needle conveying device includes a power chamber 1, the outer wall of the power chamber 1 is fixedly connected to a stepper motor 2, the stepper motor 2 is connected to an external power supply, the model of the stepper motor 2 is 103H5208-4240, the output end of the stepper motor 2 is fixedly connected to a rotating shaft 3, the rotating shaft 3 is located inside the power chamber 1, the inner wall of the power chamber 1 is rotatably connected to a driven shaft 4, the driven shaft 4 and the rotating shaft 3 are located on the same vertical line, the outer wall of the rotating shaft 3 is transmission-connected to a synchronous belt 5, the model of the synchronous belt 5 is TUN180MXL025, one end of the synchronous belt 5 away from the rotating shaft 3 is drivingly connected to the outer wall of the driven shaft 4, the outer wall of the synchronous belt 5 is fixedly connected to the coupler housing 6, the inner wall of the coupler housing 6 is rotatably connected to the baffle 7, the baffle 7 is located at the top of the inner wall of the coupler housing 6, the inner bottom wall of the coupler housing 6 is fixedly connected to a resistance spring 8, two resistance springs 8 are provided, the two resistance springs 8 are symmetrically distributed on the central axis plane of the coupler housing 6, and the two resistance springs 8 are away from one end of the inner wall of the coupler housing 6 The two limit plates 9 are fixedly connected to the bottom of the baffle plate 7, and the inner bottom wall of the coupler housing 6 is fixedly connected to a limit plate 9. Two limit plates 9 are provided, and the two limit plates 9 are located between the two resistance springs 8. The inner side wall of the limit plate 9 is slidably connected with a card block 10, and the card block 10 is provided with an arc on the top of one side close to the coupler housing 6. The outer side wall of the card block 10 is fixedly connected with a moving block 11. When in use, the coupler housing 6 is driven by the synchronous belt 5 to move up and down. During the movement, the card block 10 and the moving block 11 will be driven to move synchronously. When the moving block 11 encounters resistance during the descent, as the coupler housing 6 gradually moves downward, the bottom of the baffle plate 7 will continue to conflict with the top of the card block 10, and the end of the baffle plate 7 close to the resistance spring 8 will pull the two resistance springs 8 under the top action of the card block 10, so that the opening diameter between the baffle plate 7 and the inner bottom wall of the coupler housing 6 is expanded, and the card block 10 is further released to prevent the moving block 11 from continuing to move when it suddenly encounters resistance during the movement, thereby preventing damage to the equipment.

[0027] Reference Figure 3 A connecting hole 12 is formed through the top of the moving block 11 and is located just below the top center of the power chamber 1 . The moving block 11 is fixedly connected to a moving rod 13 through the connecting hole 12 , and the outer wall of the moving rod 13 fits with the inner wall of the connecting hole 12 .

[0028] Reference Figure 4The inner wall of the power chamber 1 is fixedly connected with a connecting plate 14, and the connecting plate 14 is located on the side of the power chamber 1 close to the driven shaft 4. The outer wall of the connecting plate 14 is fixedly connected with a sliding sleeve 15. The inner wall of the sliding sleeve 15 fits with the outer wall of the moving rod 13. The moving rod 13 is located inside the sliding sleeve 15, and the outer wall of the sliding sleeve 15 is fixedly connected with the top inner wall of the power chamber 1. When in use, the moving block 11 drives the moving rod 13 to move up and down. During the up and down movement, the moving rod 13 slides along the inner wall of the sliding sleeve 15 to avoid direct contact between the outer wall of the moving rod 13 and the top inner wall of the power chamber 1, thereby avoiding wear of the outer wall of the moving rod 13 during long-term use.

[0029] Reference Figure 4 The inner wall of the power chamber 1 is fixedly connected with a slide rail 16, which is located on one side of the driven shaft 4. The slide rail 16 and the moving block 11 are located on the same vertical plane. When in use, the slide rail 16 limits the moving direction of the moving block 11 to prevent the moving block 11 from shifting in the reverse direction during the movement.

[0030] Reference Figure 4 A slide groove 17 is provided through the outer wall of the slide rail 16. Two slide grooves 17 are provided, and the two slide grooves 17 are respectively located on both sides of the slide rail 16. By providing two slide grooves 17, the friction force of the outer wall of the slide rail 16 is reduced, and the wear degree of the slide rail 16 during use is reduced, thereby extending the service life of the equipment and improving the life of the equipment.

[0031] Reference Figure 4 The slide rail 16 is slidably connected to a slider 18 through a slide groove 17. The outer wall of the slider 18 on one side away from the slide groove 17 is fixedly connected to the outer wall of the moving block 11. The slider 18 is located between the outer wall of the slide rail 16 and the outer wall of the moving block 11. When in use, the slider 18 drives the moving block 11 to slide along the slide rail 16 to avoid direct contact between the outer wall of the moving block 11 and the outer wall of the slide rail 16, thereby reducing the friction between the moving block 11 and the slide rail 16, and then reducing the loss of the moving block 11.

[0032] Reference Figure 1 The top of the moving rod 13 is rotatably connected to a rocker arm 19, and the bottom of one end of the rocker arm 19 is rotatably connected to the top of the moving rod 13. The end of the rocker arm 19 away from the moving rod 13 is fixedly connected to a sampling needle body 20. When in use, the moving block 11 drives the moving rod 13 to move up and down, and the moving rod 13 further drives the rocker arm 19 and the sampling needle body 20 to move up and down, thereby sampling plasma.

[0033] Working principle: When in use, start the stepper motor 2, the stepper motor 2 drives the synchronous belt 5 to rotate, and further drives the coupler housing 6 fixedly connected to the outer wall of the synchronous belt 5 to move up and down along the synchronous belt 5. During the movement of the coupler housing 6, the block 10 and the moving block 11 engaged with the inner wall of the coupler housing 6 are driven to move. During the movement of the moving block 11, the moving rod 13 is driven to move up and down, thereby driving the rocker arm 19 and the sampling needle body 20 to move up and down, and then sampling is performed. When the sampling needle body 20 is not aimed at the test tube, the sampling needle is taken. When the sample needle body 20 hits a hard object, as the coupler housing 6 continues to move downward, the bottom of the baffle 7 hits the top of the block 10 that is stationary due to resistance. As the coupler housing 6 moves, the baffle 7 is gradually lifted up by the block 10, thereby stretching the two resistance springs 8. When the curved part on the top of the block 10 contacts the bottom of the baffle 7, the block 10 gradually separates from the interior of the coupler housing 6 under the action of the downward movement of the coupler housing 6, thereby preventing the sampling needle body 20 from bending and being damaged due to the continuous downward movement of the coupler housing 6 when the sampling needle body 20 hits a hard object.

[0034] Although the preferred embodiments of the present invention have been described, other changes and modifications may be made to these embodiments once those skilled in the art have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0035] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. A sampling needle delivery device, comprising a power chamber (1), characterized in that: The outer wall of the power chamber (1) is fixedly connected to a stepper motor (2), the output end of the stepper motor (2) is fixedly connected to a rotating shaft (3), the inner wall of the power chamber (1) is rotatably connected to a driven shaft (4), the outer wall of the rotating shaft (3) is transmission-connected to a synchronous belt (5), one end of the synchronous belt (5) away from the rotating shaft (3) is transmission-connected to the outer wall of the driven shaft (4), the outer wall of the synchronous belt (5) is fixedly connected to a coupler housing (6), and the The inner side wall of the coupler housing (6) is rotatably connected to a baffle (7), the inner bottom wall of the coupler housing (6) is fixedly connected to a resistance spring (8), one end of the resistance spring (8) away from the inner side wall of the coupler housing (6) is fixedly connected to the bottom of the baffle (7), the inner bottom wall of the coupler housing (6) is fixedly connected to a limit plate (9), the inner side wall of the limit plate (9) is slidably connected to a clamping block (10), and the outer side wall of the clamping block (10) is fixedly connected to a moving block (11).

2. A sampling needle transport device according to claim 1, characterized in that: A connecting hole (12) is formed through the top of the moving block (11), and the moving block (11) is fixedly connected to a moving rod (13) via the connecting hole (12).

3. A sampling needle transport device according to claim 1, characterized in that: The inner wall of the power chamber (1) is fixedly connected to a connecting plate (14), and the outer wall of the connecting plate (14) is fixedly connected to a sliding sleeve (15).

4. A sampling needle transport device according to claim 1, characterized in that: The inner side wall of the power chamber (1) is fixedly connected with a slide rail (16).

5. A sampling needle transport device according to claim 4, characterized in that: A sliding groove (17) is formed through the outer wall of the sliding rail (16).

6. A sampling needle transport device according to claim 4, characterized in that: The slide rail (16) is slidably connected to a slider (18) via a slide groove (17); an outer wall of the slider (18) away from the slide groove (17) is fixedly connected to an outer wall of the moving block (11).

7. A sampling needle transport device according to claim 2, characterized in that: The top of the moving rod (13) is rotatably connected to a rocker arm (19), and one end of the rocker arm (19) away from the moving rod (13) is fixedly connected to a sampling needle body (20).

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