Sterile disposable biopsy needle
The biopsy needle, with its snap-fit structure and press-type design, solves the problem of requiring two hands in existing technologies, enabling rapid single-handed sampling and improving operational efficiency and convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-04-03
AI Technical Summary
Existing sterile disposable biopsy needles require both hands to operate during the sampling process, which is time-consuming, labor-intensive, and inconvenient.
It adopts a snap-on structure and a press-type design. The automatic insertion and removal of the syringe is achieved through the cooperation of the pull ring buckle and the locking block, and the automatic sampling of the sampling tube is achieved through the cooperation of the push rod and the locking pin, which simplifies the operation process.
This biopsy needle enables one-handed operation, simplifies the sampling process, and improves operational efficiency and convenience.
Smart Images
Figure CN224070488U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of biopsy needle technology, specifically a sterile disposable biopsy needle. Background Technology
[0002] Sterile, disposable biopsy needles are used to obtain tissue samples from patients for disease diagnosis and other purposes. Through precise puncture, the biopsy needle can extract small pieces of tissue from the lesion area for pathological analysis, helping to determine the nature of the lesion. Common types of biopsy needles include core needles (used to obtain larger tissue blocks) and fine needles (used for cell sample collection). This procedure is usually guided by imaging (such as ultrasound, CT, or endoscopy), and is characterized by minimal invasiveness, rapid recovery, and high efficiency. It can quickly and accurately provide diagnostic evidence and is an important tool for the early diagnosis and treatment planning of many diseases.
[0003] In the existing technology, biopsy needles are similar to the piston structure design inside needle tubes. When using them, it is necessary to push and pull to extract samples. However, because the piston structure design is prone to generating air pressure, medical staff need to use both hands to operate during the sampling process, which is time-consuming, laborious and inconvenient. Summary of the Invention
[0004] The purpose of this invention is to provide a sterile disposable biopsy needle, which locks the biopsy needle with a snap-on structure. The snap-on structure allows medical staff to operate it with one hand by pressing it, and the biopsy needle can automatically slide to remove the sample.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A sterile disposable biopsy needle is provided, comprising a shell, a pull ring buckle slidably connected inside the shell, a groove formed inside the shell, a locking block slidably connected inside the groove, the locking block slidably connected inside the pull ring buckle, a spring one disposed inside the pull ring buckle, one end of the spring one fixedly connected inside the pull ring buckle, and the other end of the spring one fixedly connected inside the locking block, a pressing plate slidably connected inside the shell, and a spring two disposed on the upper surface of the shell, one end of the spring two fixedly connected inside the pressing plate, and the other end of the spring two fixedly connected inside the shell.
[0006] Optionally, the outer wall of the pull ring buckle is provided with a spring three, the outer wall of the outer shell is fixedly connected to a sleeve, the inside of the sleeve is slidably connected to a needle tube, one end of the spring three is fixedly connected to the inside of the pull ring buckle, and the other end of the spring three is fixedly connected to the inside of the needle tube.
[0007] Optionally, a push rod is slidably connected inside the housing, a push plate is fixedly connected to the outer wall of the push rod, a locking pin is slidably connected inside the push rod, and the push rod is slidably connected inside the pull ring buckle.
[0008] Optionally, a spring four is provided inside the push rod, one end of the spring four is fixedly connected to the inside of the push rod, and the other end of the spring four is fixedly connected to the inside of the locking pin. A reset buckle is slidably connected inside the outer shell, and a spring five is sleeved on the outer wall of the reset buckle.
[0009] Optionally, one end of the spring five is fixedly connected to the inside of the outer casing, and the other end of the spring five is fixedly connected to the inside of the reset buckle. The outer wall of the push rod is fitted with a spring six, one end of the spring six is fixedly connected to the inside of the outer casing, and the other end of the spring six is fixedly connected to the inside of the push plate.
[0010] Optionally, a sampling tube is fixedly connected to the outer wall of the push rod, and a sampling groove is provided inside the sampling tube. The sampling tube is slidably connected inside the needle tube.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] 1. When using this utility model, pushing the pull ring buckle causes the locking block to slide, so that the locking block slides below the press plate. The locking block lifts the press plate, and while the pull ring buckle slides, it compresses the third spring, causing the needle tube to slide and be inserted into the patient's body. When it is necessary to remove the needle tube, the press plate can be pressed down to compress the locking block, causing the locking block to slide down and compress the first spring, releasing the locking of the locking block. The third spring then drives the pull ring buckle to reset and causes the locking block to slide back to reset, thus locking the locking block. At the same time, the pull ring buckle automatically resets and causes the needle tube to slide out.
[0013] 2. In use, the push plate drives the push rod to slide, which in turn drives the sampling tube to slide into the patient's body for sampling. The sample is stuck inside the sampling slot. As the push rod slides, it also drives the locking pin to slide. The locking pin is locked directly below the reset buckle. Spring four holds the locking pin in place, limiting the push rod. During sampling, the reset buckle is pressed down to compress spring five, causing the reset buckle to press down and the locking pin to compress spring four and disengage from the reset buckle. This allows the push rod to drive the sampling tube and the sample inside the sampling slot to slide outward. With the help of spring six, the push rod automatically resets, thus realizing the automatic sampling of this invention. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the pull ring buckle of this utility model;
[0017] Figure 3 This is a schematic diagram of the structure of the card block of this utility model;
[0018] Figure 4 This is a schematic diagram of the structure of the locking pin of this utility model;
[0019] Figure 5 This is a schematic diagram of the structure of the needle and sampling tube of this utility model.
[0020] In the diagram: 1. Outer shell; 2. Pull ring buckle; 3. Slide groove; 4. Locking block; 5. Spring 1; 6. Press plate; 7. Spring 2; 8. Spring 3; 9. Needle tube; 10. Sleeve; 11. Push rod; 12. Push plate; 13. Locking pin; 14. Spring 4; 15. Reset buckle; 16. Spring 5; 17. Sampling tube; 18. Sampling slot; 19. Spring 6. Detailed Implementation
[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0022] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0023] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying 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.
[0024] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0025] The sterile disposable biopsy needle provided in this embodiment of the present invention will now be described. The sterile disposable biopsy needle includes a housing 1, with a pull ring buckle 2 slidably connected inside the housing 1. A groove 3 is formed inside the housing 1, and a locking block 4 is slidably connected inside the groove 3. The locking block 4 is locked below a pressing plate 6, and a spring 5 supports the locking block 4 to achieve locking. The locking block 4 is slidably connected inside the pull ring buckle 2. A spring 5 is disposed inside the pull ring buckle 2, with one end of the spring 5 fixedly connected inside the pull ring buckle 2 and the other end fixedly connected inside the locking block 4. A pressing plate 6 is slidably connected inside the housing 1. A second spring 7 is provided on the upper surface of the outer shell 1. One end of the second spring 7 is fixedly connected to the inside of the button plate 6, and the other end of the second spring 7 is fixedly connected to the inside of the outer shell 1. The second spring 7 supports the button plate 6 and can also achieve the effect of automatic reset. A third spring 8 is provided on the outer wall of the pull ring buckle 2. A sleeve 10 is fixedly connected to the outer wall of the outer shell 1. A needle tube 9 is slidably connected inside the sleeve 10. One end of the third spring 8 is fixedly connected to the inside of the pull ring buckle 2, and the other end of the third spring 8 is fixedly connected to the inside of the needle tube 9. The third spring 8 can make the pull ring buckle 2 automatically reset.
[0026] The present invention provides a sterile disposable biopsy needle. Compared with the prior art, the present invention uses a snap-on structure to lock the sampling structure in the patient's body, and uses a press-type structure to enable the present invention to automatically sample.
[0027] Please refer to another embodiment of this utility model as well. Figures 1 to 5The inner casing 1 has a sliding connection to a push rod 11, and a push plate 12 is fixedly connected to the outer wall of the push rod 11. A locking pin 13 is slidably connected inside the push rod 11, locking it directly below the reset buckle 15 to limit and lock the push rod 11, while also assisting in automatic sampling. The push rod 11 is slidably connected inside the pull ring buckle 2. A spring 14 is installed inside the push rod 11, with one end fixedly connected to the inside of the push rod 11 and the other end fixedly connected to the inside of the locking pin 13, providing support for the locking pin 13. The inner casing 1 also has a sliding connection to a reset buckle 15, and a spring 16 is sleeved on the outer wall of the reset buckle 15. One end of spring 5 16 is fixedly connected to the inside of the outer shell 1, and the other end of spring 5 16 is fixedly connected to the inside of the reset buckle 15. Spring 5 16 drives the reset buckle 15 to automatically reset. Spring 6 19 is sleeved on the outer wall of push rod 11. One end of spring 6 19 is fixedly connected to the inside of the outer shell 1, and the other end of spring 6 19 is fixedly connected to the inside of push plate 12. Spring 6 19 plays the role of automatically resetting push rod 11. Sampling tube 17 is fixedly connected to the outer wall of push rod 11. Sampling groove 18 is opened inside sampling tube 17. Sampling tube 17 is slidably connected to the inside of needle tube 9. The sliding of sampling tube 17 drives sampling groove 18 to slide in the body for sampling.
[0028] Working principle: In use, first press the pull ring 2, which compresses the spring 3 8 and causes the needle 9 to slide, allowing it to slide into the patient's body. Simultaneously, the pull ring 2 slides, causing the locking block 4 to slide and lock under the pressing plate 6, thus locking the needle 9 within the patient's body. Next, press the push plate 12, which compresses the spring 6 19 and causes the push rod 11 and sampling tube 17 to slide, allowing the sampling tube 17 to slide into the patient's body and use the sampling slot 18 for sampling. Simultaneously, the push rod 11 slides, causing the locking pin 13 to slide directly below the reset buckle 15. The spring 4 14 pushes the locking pin 13 out, locking it directly below the reset buckle 15, thus locking the push rod 11. During sampling, press down on the reset buckle 15, causing it to press down the locking pin 13. The locking pin 13 slides out from directly below the reset buckle 15. At this time, the elasticity of the spring 6 19 drives the push plate 12 and the push rod 11 to reset, causing the push rod 11 to slide and drive the sampling tube 17 out of the patient's body. This causes the sampling slot 18 to slide out of the sample, thus realizing automatic sampling. After sampling is completed, press down the button plate 6 to press down the locking block 4. The locking block 4 slides down into the pull ring buckle 2, releasing the locking of the locking block 4. Then, the spring 3 8 can drive the pull ring buckle 2 to reset, thereby causing the needle tube 9 to reset and slide out of the patient's body, completing the sampling operation. This not only realizes the locking of the needle tube 9 in the patient's body through the buckle structure, but also the locking of the sampling tube 17 in the patient's body for sampling. The locking is released by pressing to complete the sampling. The operation is simple and convenient, and can also be operated with one hand, making it easy for medical staff to use.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements 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 sterile disposable biopsy needle comprising a housing (1), characterized in that: The inside of the shell (1) is slidably connected with a pull ring buckle (2), the inside of the shell (1) is provided with a sliding groove (3), the inside of the sliding groove (3) is slidably connected with a clamping block (4), the clamping block (4) is slidably connected in the inside of the pull ring buckle (2), the inside of the pull ring buckle (2) is provided with a spring (5), one end of the spring (5) is fixedly connected in the inside of the pull ring buckle (2), the other end of the spring (5) is fixedly connected in the inside of the clamping block (4), the inside of the shell (1) is slidably connected with a pressing plate (6), the upper surface of the shell (1) is provided with a spring (7), one end of the spring (7) is fixedly connected in the inside of the pressing plate (6), the other end of the spring (7) is fixedly connected in the inside of the shell (1).
2. The aseptic disposable biopsy needle of claim 1 wherein: The outer wall of the pull ring buckle (2) is provided with a spring (8), the outer wall of the shell (1) is fixedly connected with a sleeve (10), the inside of the sleeve (10) is slidably connected with a needle tube (9), one end of the spring (8) is fixedly connected in the inside of the pull ring buckle (2), the other end of the spring (8) is fixedly connected in the inside of the needle tube (9).
3. The aseptic disposable biopsy needle of claim 2 wherein: The inside of the shell (1) is slidably connected with a push rod (11), the outer wall of the push rod (11) is fixedly connected with a push plate (12), the inside of the push rod (11) is slidably connected with a clamping pin (13), the push rod (11) is slidably connected in the inside of the pull ring buckle (2).
4. The aseptic disposable biopsy needle of claim 3 wherein: The inside of the push rod (11) is provided with a spring (14), one end of the spring (14) is fixedly connected in the inside of the push rod (11), the other end of the spring (14) is fixedly connected in the inside of the clamping pin (13), the inside of the shell (1) is slidably connected with a reset buckle (15), the outer wall of the reset buckle (15) is sleeved with a spring (16).
5. The aseptic disposable biopsy needle of claim 4 wherein: One end of the spring (16) is fixedly connected in the inside of the shell (1), the other end of the spring (16) is fixedly connected in the inside of the reset buckle (15), the outer wall of the push rod (11) is sleeved with a spring (19), one end of the spring (19) is fixedly connected in the inside of the shell (1), the other end of the spring (19) is fixedly connected in the inside of the push plate (12).
6. The aseptic disposable biopsy needle of claim 3 wherein: The outer wall of the push rod (11) is fixedly connected with a sampling tube (17), the inside of the sampling tube (17) is provided with a sampling groove (18), the sampling tube (17) is slidably connected in the inside of the needle tube (9).