A sampling device for medical testing

What is AI technical title?
AI technical title is built by Patsnap AI team. It summarizes the technical point description of the patent document.
By using a motor-driven mechanical transmission structure and simple connection components, the problems of uneven sampling and low batch testing efficiency are solved, enabling accurate sampling and efficient replacement, thus improving the accuracy and safety of medical testing.

CN224500059UActive Publication Date: 2026-07-14KASHGAR CUSTOMS TECH CENT

Patent Information

Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner: KASHGAR CUSTOMS TECH CENT
Filing Date: 2025-08-07
Publication Date: 2026-07-14

AI Technical Summary

Technical Problem

Existing medical testing sampling devices rely on manual operation, resulting in uneven sampling volume, which affects the accuracy of test results. Furthermore, the changeover process is cumbersome in batch testing, which affects efficiency and increases the risk of sample contamination and needle pricks.

Method used

The sampling needle is controlled by a motor-driven mechanical transmission structure, combined with simple connection components and an observation window, to achieve automated sampling and quick replacement, reducing manual intervention and direct contact.

Benefits of technology

It enables precise control of sampling volume, improves the accuracy of test results, reduces the risk of sample contamination and operator injury, and enhances the efficiency of batch testing.

✦ Generated by Eureka AI based on patent content.

Smart Images

Figure CN224500059U_ABST

Patent Text Reader

Abstract

The utility model relates to medical instrument technical field, and disclose a kind of sampling device for medical examination, including mounting seat, the side of mounting seat top is provided with shell, sampling needle tube is arranged between mounting seat and shell, the inside of mounting seat is provided with cavity, the inside of cavity is provided with sampling assembly, connecting assembly is arranged between mounting seat and shell.The sampling device for medical examination, motor is formed mechanical transmission structure by transmission rod, screw rod and telescopic link, realizes the automation control to sampling needle tube piston rod, compared with traditional manual operation, this kind of mechanical drive mode can accurate control telescopic link telescopic distance, to accurately control sampling amount, effectively avoid the problem that sample amount is too much or insufficient due to human operation force uneven, experience difference and other factors, provide reliable sample basis for the accuracy of subsequent medical examination result.

Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a sampling device for medical testing. Background Technology

[0002] Medical testing is a core component of disease diagnosis, treatment monitoring, and health assessment. High-quality sample collection is a prerequisite for ensuring the accuracy of test results. With the development of medical technology, the clinical demand for sampling devices has evolved from simple collection to precision, safety, efficiency, and adaptability to diverse testing scenarios. Medical testing sampling devices refer to specialized tools or systems used in medical testing to collect, preserve, and transport samples from human blood, body fluids, tissues, secretions, etc. Their core function is to safely, accurately, and efficiently obtain samples that meet testing requirements while maintaining the original biological characteristics of the samples, and to provide a stable sample basis for subsequent testing.

[0003] However, existing sampling devices for medical testing have the following drawbacks:

[0004] (1) Traditional manual operation relies on the operator's experience and force control, which can easily lead to excessive or insufficient sampling due to uneven force and differences in operating habits, affecting the accuracy of test results. The shaking that may occur during manual operation will also reduce the stability of sampling.

[0005] (2) Traditional replacement methods often require complex tools and complicated steps, which seriously affect work efficiency in batch testing scenarios. In addition, operators have more direct contact with the syringes, which can easily lead to sample contamination and puncture risks. Inaccurate positioning during installation may also lead to non-standard operation.

[0006] Therefore, this utility model provides a sampling device for medical testing. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] The problem solved by this utility model is to provide a sampling device for medical testing that is highly practical, and to resolve the problems mentioned in the background art, such as the tendency for excessive or insufficient sampling due to uneven force or differences in operating habits, and the serious impact on work efficiency in batch testing scenarios.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model is implemented through the following technical solution: a sampling device for medical testing, including a mounting base, a housing provided on one side of the top of the mounting base, a sampling needle provided between the mounting base and the housing, a cavity opened inside the mounting base, a sampling component provided inside the cavity, and a connecting component provided between the mounting base and the housing;

[0011] The sampling assembly includes a motor fixedly connected to the bottom wall of the cavity. The output end of the motor is splinedly connected to a transmission rod. One end of the transmission rod is fixedly connected to a lead screw. The surface of the lead screw is threadedly connected to a telescopic rod. One end of the telescopic rod is equipped with a connecting plate.

[0012] The connecting assembly includes two cavities formed inside the mounting base. A pressing block is slidably connected to the inner wall of the cavity. A spring is connected between one side of the pressing block and the inner wall of the cavity. A locking block is installed on the top of the pressing block. The bottom of the outer shell has locking slots on both sides that are adapted to the locking blocks.

[0013] Optionally, a circular plate is fixedly connected to one end of the sampling needle piston rod. The top of the connecting plate is provided with an installation groove that matches the circular plate. The circular plate at one end of the sampling needle piston rod and the installation groove on the top of the connecting plate are mutually compatible, which can realize the quick and accurate docking of the piston rod and the connecting plate, and avoid the situation of displacement or loosening when the piston rod and the connecting plate are connected.

[0014] Optionally, a positioning plate is fixedly connected to the surface of the sampling needle tube, and two placement slots adapted to the positioning plate are opened on the top of the mounting base and on both sides of the bottom of the outer shell. When installing the sampling needle tube, it can be accurately positioned to prevent the sampling needle tube from lateral displacement or rotation during the sampling process.

[0015] Optionally, an observation window is installed on the top of the outer casing. The observation window is made of tempered glass, allowing the operator to clearly observe the sample inside the sampling needle, such as the sample volume and the presence of air bubbles. This facilitates real-time monitoring of the sampling progress and quality, and timely detection and handling of any problems that may arise during the sampling process.

[0016] Optionally, a pressing plate is fixedly connected to the other side of the pressing block. The surface of the pressing plate is provided with a mesh anti-slip texture, which can effectively prevent the hand from slipping during the pressing operation, ensuring that the operator can press the pressing block stably and effortlessly, and smoothly complete the unlocking and locking operation of the shell, thereby improving the convenience and reliability of the operation.

[0017] Optionally, a limiting block is fixedly connected to the surface of the telescopic rod, and a limiting groove adapted to the limiting block is provided on the inner side wall of the cavity. The limiting block is movably connected inside the limiting groove, which can strictly limit the movement direction of the telescopic rod, ensuring that the telescopic rod can only move in a straight line along the axial direction, and preventing it from rotating or deviating during the movement.

[0018] (III) Beneficial Effects

[0019] This utility model provides a sampling device for medical testing, which has the following beneficial effects:

[0020] 1. This sampling device for medical testing utilizes a mechanical transmission structure formed by a motor, a transmission rod, a lead screw, and a telescopic rod to achieve automated control of the sampling needle piston rod. Compared to traditional manual operation, this mechanical drive method can precisely control the extension and retraction distance of the telescopic rod, thereby accurately controlling the sampling volume. This effectively avoids the problem of excessive or insufficient sample volume caused by uneven human operation force or experience differences, providing a reliable sample basis for the accuracy of subsequent medical test results.

[0021] 2. This medical testing sampling device features a connecting assembly that simplifies and simplifies the replacement of the sampling needle. Simply press the pressure plates on both sides of the mounting base to quickly release the outer shell from the mounting base. After removing the outer shell, the sampling needle can be easily replaced. The entire process requires no complicated tools or tedious steps, greatly saving replacement time. In batch testing scenarios where frequent replacement of sampling needles is required, it can significantly improve work efficiency. During the replacement process, the outer shell design reduces direct contact between the operator and the sampling needle, lowering the risk of sample contamination and operator injury. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the sampling needle structure of this utility model;

[0024] Figure 3 This is a cross-sectional view of the mounting base of this utility model;

[0025] Figure 4 This is a cross-sectional view of the outer shell of this utility model.

[0026] In the diagram: 1. Mounting base; 101. Housing; 102. Sampling needle; 1021. Circular plate; 1022. Positioning plate; 2. Sampling assembly; 201. Motor; 202. Lead screw; 203. Telescopic rod; 204. Connecting plate; 3. Connecting assembly; 301. Pressing block; 302. Spring; 303. Locking block; 4. Observation window; 5. Pressing plate; 6. Limiting block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] Please see Figures 1 to 4 The present invention provides a technical solution: a sampling device for medical testing, including a mounting base 1, a housing 101 is provided on one side of the top of the mounting base 1, a sampling needle tube 102 is provided between the mounting base 1 and the housing 101, a cavity is opened inside the mounting base 1, a sampling component 2 is provided inside the cavity, and a connecting component 3 is provided between the mounting base 1 and the housing 101.

[0029] The sampling assembly 2 includes a motor 201 fixedly connected to the bottom wall of the cavity, which serves as a power source to provide driving force for the sampling operation. The output end of the motor 201 is splinedly connected to a transmission rod, and one end of the transmission rod is fixedly connected to a lead screw 202, which converts the rotational motion into the linear motion of the telescopic rod 203, providing power for the pushing and pulling of the piston rod of the sampling needle tube 102. The surface of the lead screw 202 is threadedly connected to the telescopic rod 203, which drives the piston rod to push and pull through its own extension and retraction, thereby controlling the sampling needle tube 102 to complete the sample intake and discharge operation. One end of the telescopic rod 203 is equipped with a connecting plate 204.

[0030] The connecting component 3 includes two cavities opened inside the mounting base 1. A pressing block 301 is slidably connected to the inner side wall of the cavity. By pressing or resetting, the locking block 303 is moved to realize the locking and unlocking between the outer shell 101 and the mounting base 1. A spring 302 is connected between one side of the pressing block 301 and the inner side wall of the cavity to provide a resetting force for the pressing block 301. A locking block 303 is installed on the top of the pressing block 301 and cooperates with the locking groove at the bottom of the outer shell 101 to fix the outer shell 101 to the mounting base 1. Locking grooves adapted to the locking block 303 are opened on both sides of the bottom of the outer shell 101.

[0031] A circular plate 1021 is fixedly connected to one end of the piston rod of the sampling needle tube 102. The top of the connecting plate 204 is provided with an installation groove that matches the circular plate 1021. The circular plate 1021 at one end of the piston rod of the sampling needle tube 102 and the installation groove at the top of the connecting plate 204 are mutually compatible, which can realize the quick and accurate docking of the piston rod and the connecting plate 204, and avoid the situation of displacement or loosening when the piston rod and the connecting plate 204 are connected.

[0032] The sampling needle tube 102 is fixedly connected to the surface of the positioning plate 1022. The top of the mounting base 1 has two placement slots that are adapted to the positioning plate 1022 on both sides of the bottom of the outer shell 101. When the sampling needle tube 102 is installed, it can be accurately positioned to prevent the sampling needle tube 102 from lateral displacement or rotation during the sampling process.

[0033] An observation window 4 is installed on the top of the outer casing 101. The observation window 4 is made of tempered glass. The operator can clearly observe the sample inside the sampling needle 102 through the observation window 4, such as the amount of sample and whether there are air bubbles, so as to keep track of the sampling progress and sampling quality in real time and promptly detect and deal with any problems that may occur during the sampling process.

[0034] A pressing plate 5 is fixedly connected to the other side of the pressing block 301. The surface of the pressing plate 5 is provided with a mesh anti-slip texture, which can effectively prevent the hand from slipping during the pressing operation, ensuring that the operator can press the pressing block 301 stably and effortlessly, and smoothly complete the unlocking and locking operation of the outer shell 101, thus improving the convenience and reliability of the operation.

[0035] The surface of the telescopic rod 203 is fixedly connected to a limiting block 6. The inner side wall of the cavity is provided with a limiting groove that matches the limiting block 6. The limiting block 6 is movably connected inside the limiting groove, which can strictly limit the movement direction of the telescopic rod 203, ensuring that the telescopic rod 203 can only move in a straight line along the axial direction, and preventing it from rotating or deviating during the movement.

[0036] In this utility model, the working steps of the device are as follows:

[0037] First step: After the motor 201 starts, its output end drives the transmission rod to rotate through the spline, which in turn drives the lead screw 202 to rotate synchronously. The thread on the surface of the lead screw 202 meshes with the thread on the inner wall of the telescopic rod 203. When the lead screw 202 rotates, the telescopic rod 203 moves linearly along the axis of the lead screw 202 under the action of the thread. The top of the telescopic rod 203 is connected to the piston rod of the sampling needle tube 102 through the connecting plate 204. When the telescopic rod 203 retracts, it will pull the piston rod of the sampling needle tube 102 to move backward, so that a negative pressure is formed inside the needle tube, thereby drawing in the sample through the needle. When the telescopic rod 203 extends, it can push the piston rod forward to realize the sample discharge.

[0038] Step 2: When it is necessary to replace the sampling needle 102, press the pressing plates 5 on both sides of the mounting base 1 to drive the pressing block 301 to slide into the cavity. At the same time, the pressing block 301 compresses the spring 302, and the locking block 303 on the top of the pressing block 301 disengages from the locking groove at the bottom of the outer shell 101, releasing the locking and fixing between the outer shell 101 and the mounting base 1. After the outer shell 101 is unlocked, it can be removed upwards to expose the sampling needle 102 on the top of the mounting base 1. The used sampling needle 102 can then be directly removed, and the new sampling needle can be inserted. The sample needle tube 102 is placed on top of the mounting base 1, so that the positioning plate 1022 is embedded in the placement groove of the mounting base 1, and the circular plate 1021 at the end of the piston rod is engaged in the mounting groove of the connecting plate 204. The outer shell 101 is then reattached to the mounting base 1, so that the slot at the bottom of the outer shell 101 is aligned with the locking block 303 in the mounting base 1. The pressing plate 5 is released, the spring 302 releases its elastic force to push the pressing block 301 to reset, and the locking block 303 is re-engaged in the slot, thus completing the fixation of the outer shell 101 and the mounting base 1. The replacement of the new needle tube is now complete.

[0039] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0040] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0041] It will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sampling device for medical testing, comprising a mounting base (1), characterized in that: A housing (101) is provided on one side of the top of the mounting base (1), a sampling needle (102) is provided between the mounting base (1) and the housing (101), a cavity is provided inside the mounting base (1), a sampling component (2) is provided inside the cavity, and a connecting component (3) is provided between the mounting base (1) and the housing (101). The sampling assembly (2) includes a motor (201) fixedly connected to the bottom wall of the cavity. The output end of the motor (201) is splinedly connected to a transmission rod. One end of the transmission rod is fixedly connected to a lead screw (202). The surface of the lead screw (202) is threadedly connected to a telescopic rod (203). One end of the telescopic rod (203) is equipped with a connecting plate (204). The connecting assembly (3) includes two cavities opened inside the mounting base (1). A pressing block (301) is slidably connected to the inner side wall of the cavity. A spring (302) is connected between one side of the pressing block (301) and the inner side wall of the cavity. A locking block (303) is installed on the top of the pressing block (301). The bottom of the outer shell (101) has locking grooves on both sides that are adapted to the locking block (303).

2. The sampling device for medical testing according to claim 1, characterized in that: One end of the piston rod of the sampling needle (102) is fixedly connected to a circular plate (1021), and the top of the connecting plate (204) is provided with an installation groove that is compatible with the circular plate (1021).

3. A sampling device for medical testing according to claim 1, characterized in that: The sampling needle tube (102) is fixedly connected to a positioning plate (1022), and the top of the mounting base (1) and the two sides of the bottom of the outer shell (101) are provided with placement grooves that are compatible with the positioning plate (1022).

4. A sampling device for medical testing according to claim 1, characterized in that: An observation window (4) is installed on the top of the outer casing (101), and the observation window (4) is made of tempered glass.

5. A sampling device for medical testing according to claim 1, characterized in that: A pressing plate (5) is fixedly connected to the other side of the pressing block (301), and the surface of the pressing plate (5) is provided with a mesh anti-slip texture.

6. A sampling device for medical testing according to claim 1, characterized in that: The surface of the telescopic rod (203) is fixedly connected to a limiting block (6), and the inner sidewall of the cavity is provided with a limiting groove that is adapted to the limiting block (6). The limiting block (6) is movably connected to the inside of the limiting groove.