Medical examination sampling device
By designing a medical testing sampling device with a support rod and a strong spring, the problems of inconvenient grip and automatic reset were solved, enabling fast and smooth sampling operations and ensuring sample integrity, thereby improving work efficiency and testing accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHOUKOU VOCATIONAL & TECHN COLLEGE
- Filing Date
- 2025-01-09
- Publication Date
- 2026-05-26
AI Technical Summary
Existing sampling devices are inconvenient to hold due to their simple shape, which can easily cause hand fatigue and lack automatic reset function, thus reducing work efficiency.
A medical testing sampling device was designed, comprising a support rod, a piston head, and a powerful spring. By pressing a button, the sliding rod moves the piston head to extract samples, and the powerful spring enables the piston head to automatically reset. Combined with a telescopic spring, the sealing performance is enhanced.
It improves the smoothness of sampling operations, reduces hand fatigue, ensures the integrity and airtightness of samples, and improves work efficiency and the accuracy of test results.
Smart Images
Figure CN224269315U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pharmaceutical management technology, and in particular to a medical testing sampling device. Background Technology
[0002] In the field of modern medical testing, sampling devices, such as syringes, play an indispensable role as key tools for obtaining samples for accurate diagnosis. With the continuous advancement of medical technology and the ever-increasing demands for accuracy and comprehensiveness in disease diagnosis, the application of sampling devices is becoming increasingly widespread and crucial. They can collect samples from various tissues and body fluids, providing a basis for subsequent laboratory analysis and thus assisting doctors in making accurate diagnoses and developing appropriate treatment plans.
[0003] Most sampling devices typically consist of a syringe, needle, piston rod, piston head, handle, and sample tube. First, the medical staff attaches the needle to the front of the syringe. During intravenous puncture, the staff holds the handle and inserts the sharp part of the needle into the vein. Once the needle is in the vein, the staff pulls the piston rod, moving the piston head towards the rear of the syringe. Due to the negative pressure created inside the syringe, blood from the vein is forced through the needle into the syringe by the pressure difference. After obtaining a sufficient blood sample, the needle is withdrawn from the vein, completing the blood collection for subsequent testing and analysis.
[0004] In the prior art, some sampling devices, such as ordinary syringes, are usually simple in shape. When holding them, they mainly rely on the natural grip of the fingers and palms. After each extraction, medical staff need to manually push the piston head back to its original position, which can easily cause hand fatigue and reduce work efficiency. Therefore, in order to address the above shortcomings, a medical testing sampling device is proposed. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a medical testing sampling device. This device aims to improve the problems of low efficiency caused by the simple shape of existing sampling devices, which makes them inconvenient to hold and easily leads to hand fatigue, and the lack of automatic reset function.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a medical testing sampling device, comprising a support rod, a receiving tube fixedly connected to the top left of the support rod, a mounting base fixedly connected to the outer right of the receiving tube, a sealing cover connected to the mounting base via a locking assembly, a sliding rod slidably connected inside the sealing cover, a limit rod fixedly connected to the inner right of the sliding rod, a rotating rod fixedly connected to the inner right of the support rod, a button rotatably connected to the outer side of the rotating rod, two limit grooves formed inside the top of the button, a strong spring sleeved on the outer left of the sliding rod, a piston head fixedly connected to the left side of the sliding rod, a connecting ring fixedly connected to the bottom left of the support rod, and a sampling component threadedly connected inside the connecting ring.
[0007] Furthermore, the piston head has multiple receiving grooves inside, each receiving groove is equipped with a telescopic spring, and a movable rod is slidably connected inside the receiving groove. Each movable rod has a pressing block fixedly connected to a distant side, and a sealing ring is fixedly connected to the outside of the piston head.
[0008] Furthermore, the locking assembly includes two bolts, the external threads of which are connected to the interior of the mounting base and the sealing cap, and the external threads of the bolts are connected to a nut, one side of which contacts the left side of the mounting base.
[0009] Furthermore, the limiting rod is externally slidably connected to the inside of the two limiting grooves, and the button is externally movably connected to the inside of the right side of the support rod.
[0010] Furthermore, the piston head is slidably connected to the inside of the support rod, and a handle is fixedly connected to the right side of the bottom end of the support rod.
[0011] Furthermore, one end of the powerful spring is fixedly connected to the left side of the sealing cover, and the other end of the powerful spring is fixedly connected to the right side of the piston head.
[0012] Furthermore, the sampling assembly includes a threaded block, the external thread of which is connected to the inside of the connecting ring, a sample bottle is fixedly connected to the bottom end of the threaded block, and an extraction head is threaded to the left side of the receiving tube.
[0013] Furthermore, the outer side of the sealing ring is in contact with the inner side of the receiving tube, and the outer side of the extrusion block is slidably connected to the inner side of the outer ring of the piston head.
[0014] This utility model has the following beneficial effects:
[0015] 1. In this utility model, by holding the handle and pressing the button, the sliding rod drives the piston head to move inside the extraction tube, thereby extracting the medicine. The extracted medicine flows into the storage tube for storage. Then, as the piston head moves, it squeezes the powerful spring, generating spring force that allows the piston head to automatically return to its original position for the next extraction. Medical staff can perform sampling operations more quickly and smoothly, reducing pauses and delays caused by hand fatigue or cumbersome operations, and improving overall work efficiency.
[0016] 2. In this utility model, the sealing ring can be more tightly fitted by the action of the telescopic spring, which effectively reduces the risk of leakage of medicine during the extraction process. When the extraction device is connected to the medicine container, the pressure applied by the spring ensures good sealing. This ensures the integrity of the extracted sample, so that the sample can truly reflect the physiological or pathological state of the tested object during subsequent transportation, storage and testing analysis, and avoids the accuracy of the test results being affected by changes in sample composition due to leakage or contamination. Attached Figure Description
[0017] Figure 1 This is a perspective view of a medical testing sampling device proposed in this utility model;
[0018] Figure 2 This is a schematic diagram of the sliding rod structure of a medical testing sampling device proposed in this utility model;
[0019] Figure 3 for Figure 2 Enlarged view of point A in the image;
[0020] Figure 4 for Figure 2 Enlarged view of point B in the image.
[0021] Legend:
[0022] 1. Support rod; 2. Receiving tube; 3. Mounting base; 4. Bolt; 5. Nut; 6. Sealing cap; 7. Sliding rod; 8. Limiting rod; 9. Handle; 10. Rotating rod; 11. Button; 12. Limiting groove; 13. Strong spring; 14. Piston head; 15. Connecting ring; 16. Threaded block; 17. Sample bottle; 18. Extraction head; 19. Receiving groove; 20. Telescopic spring; 21. Movable rod; 22. Squeezing block; 23. Sealing ring. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Reference Figures 1 to 3 This utility model provides an embodiment of a medical testing sampling device, comprising a support rod 1. A receiving tube 2 is fixedly connected to the top left side of the support rod 1. The receiving tube 2 can be used to contain substances such as medicines during the extraction process. A mounting base 3 is fixedly connected to the outer right side of the receiving tube 2. The mounting base 3 is connected to a sealing cover 6 via a locking assembly. The locking assembly includes two bolts 4, which are precisely threaded into the interior of the mounting base 3 and the sealing cover 6. A nut 5 is also threaded onto the exterior of the bolts 4, with one side of the nut 5 tightly contacting the left side of the mounting base 3 to ensure the stability of the connection between the sealing cover 6 and the mounting base 3. A slidable sliding rod 7 is provided inside the sealing cover 6, and a limit rod 8 is fixedly connected to the inner right side of the sliding rod 7. A handle 9 is securely fixed to the bottom right side of the support rod 1 for easy gripping and operation by medical personnel. A rotating rod 10 is fixedly connected to the inside of the right side of the support rod 1. A button 11 is rotatably connected to the outside of the rotating rod 10. The button 11 can move flexibly inside the right side of the support rod 1. Two limiting grooves 12 are opened inside the top of the button 11.
[0025] The outer side of the limiting rod 8 can slide smoothly inside the two limiting grooves 12. A strong spring 13 is sleeved on the outer left side of the sliding rod 7. A piston head 14 is fixedly connected to the left side of the sliding rod 7. One end of the strong spring 13 is fixedly connected to the left side of the sealing cap 6, and the other end is fixedly connected to the right side of the piston head 14. The piston head 14 can slide inside the support rod 1, and the piston head will exert force on the strong spring 13 during the sliding process. A connecting ring 15 is fixedly connected to the bottom left side of the support rod 1. A sampling assembly is threadedly connected inside the connecting ring 15. The sampling assembly includes a threaded block 16. The outer thread of the threaded block 16 is connected to the inside of the connecting ring 15. A sample bottle 17 is fixedly connected to the bottom end of the threaded block 16 for storing the extracted sample. An extraction head 18 is threadedly connected to the left side of the receiving tube 2 for connecting to an external container or the like for extraction operations.
[0026] Reference Figure 1 , Figure 2 and Figure 4The piston head 14 has multiple receiving grooves 19 inside, and a telescopic spring 20 is installed inside the receiving groove 19. A movable rod 21 is also slidably connected inside the receiving groove 19. A pressing block 22 is fixedly connected to the far side of the multiple movable rods 21. The pressing block 22 can slide inside the outer ring of the piston head 14. A sealing ring 23 is fixedly connected to the outside of the piston head 14. The outside of the sealing ring 23 is in close contact with the inside of the receiving tube 2. During the movement of the piston head 14, the telescopic spring 20 can cause the movable rod 21 to drive the pressing block 22 to press outward, thereby making the sealing ring 23 better fit the inside of the receiving tube 2 and ensuring the sealing of the device.
[0027] Working principle: First, the extraction head 18 is threaded into the inside of the left side of the receiving tube 2, and the sample bottle 17 is threaded into the connecting ring 15 through the threaded block 16 to complete the assembly of the sampling device.
[0028] Then, the medical staff holds handle 9 and presses button 11. Button 11 rotates around rotating rod 10 and moves inside the right side of support rod 1. The rotation of button 11 causes limiting rod 8 to slide within limiting groove 12, thereby driving sliding rod 7 to move to the right. Sliding rod 7 drives piston head 14 to slide inside support rod 1. During this process, the powerful spring 13 is compressed, generating spring force. The movement of piston head 14 creates negative pressure inside receiving tube 2, thereby drawing in the medicine. The drawn medicine will flow into sample bottle 17 for storage.
[0029] When button 11 is released, the spring force of the powerful spring 13 causes the piston head 14 to automatically return to its original position to the left, ready for the next extraction operation. During the movement of the piston head 14, the telescopic spring 20 causes the movable rod 21 to drive the squeezing block 22 to squeeze outward, making the sealing ring 23 fit more tightly against the inside of the receiving tube 2, effectively reducing the risk of leakage of medicine during the extraction process, ensuring the integrity of the extracted sample, so that it can truly reflect the physiological or pathological state of the tested object during subsequent transportation, storage and testing analysis.
[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A medical testing sampling device, comprising a support rod (1), characterized in that: A receiving tube (2) is fixedly connected to the top left of the support rod (1). A mounting base (3) is fixedly connected to the outside right of the receiving tube (2). A sealing cover (6) is connected to the mounting base (3) via a locking assembly. A sliding rod (7) is slidably connected inside the sealing cover (6). A limit rod (8) is fixedly connected to the inside right of the sliding rod (7). A rotating rod (10) is fixedly connected to the inside right of the support rod (1). A button (11) is rotatably connected to the outside of the rotating rod (10). Two limit grooves (12) are opened inside the top of the button (11). A strong spring (13) is sleeved on the outside left of the sliding rod (7). A piston head (14) is fixedly connected to the left side of the sliding rod (7). A connecting ring (15) is fixedly connected to the bottom left of the support rod (1). The internal thread of the connecting ring (15) is connected to a sampling component. The piston head (14) has multiple receiving grooves (19) inside. The receiving grooves (19) are provided with telescopic springs (20). The receiving grooves (19) are slidably connected to movable rods (21). Each of the multiple movable rods (21) is fixedly connected to a squeezing block (22) on the opposite side. The piston head (14) is fixedly connected to a sealing ring (23). The limiting rod (8) is slidably connected to the inside of the two limiting grooves (12). The button (11) is movably connected to the inside of the right side of the support rod (1). The outside of the sealing ring (23) is in contact with the inside of the receiving tube (2). The outside of the squeezing block (22) is slidably connected to the inside of the outer ring of the piston head (14).
2. The medical testing sampling device according to claim 1, characterized in that: The locking assembly includes two bolts (4), the external threads of which are connected to the interior of the mounting base (3) and the sealing cap (6), and the external threads of the bolts (4) are connected to a nut (5), one side of which contacts the left side of the mounting base (3).
3. The medical testing sampling device according to claim 1, characterized in that: The piston head (14) is slidably connected to the inside of the support rod (1), and a handle (9) is fixedly connected to the right side of the bottom end of the support rod (1).
4. A medical testing sampling device according to claim 1, characterized in that: One end of the powerful spring (13) is fixedly connected to the left side of the sealing cover (6), and the other end of the powerful spring (13) is fixedly connected to the right side of the piston head (14).
5. A medical testing sampling device according to claim 1, characterized in that: The sampling assembly includes a threaded block (16), the external thread of which is connected to the inside of the connecting ring (15), a sample bottle (17) is fixedly connected to the bottom end of the threaded block (16), and an extraction head (18) is connected to the left internal thread of the receiving tube (2).