A thyroid puncture device

Abstract

The utility model discloses a kind of thyroid puncture devices, including shell, indwelling needle, puncture needle and fixed assembly. Shell bottom is equipped with circular groove with internal thread, top is equipped with slide and observation port, and scale line is equipped on the both sides of observation port;Indwelling needle is installed in shell by thread, the needle core of puncture needle is slidably arranged in the needle tube of indwelling needle, and needle head is equipped with mark line to correspond with scale line in real time;Fixed assembly is clamped needle tube and adheres skin by bevel extrusion design.This utility model is positioned by scale, two-way limiting and modularization fixed structure, solve the problem that traditional device positioning accuracy is low, stability is poor, with puncture depth visualization, anti-loosening, operation is convenient and the like advantage, significantly improve the accuracy and safety of thyroid biopsy.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a thyroid puncture device. Background Technology

[0002] Clinical diagnosis of thyroid nodules or lesions often relies on fine-needle aspiration biopsy. Traditional thyroid biopsy devices mostly use an open structure, which has the following problems:

[0003] 1. Insufficient positioning accuracy: During the puncture process, it is difficult for the operator to observe the relative position of the needle core and the needle tube in real time, which makes it impossible for the sampling port to accurately reach the target area, which can easily lead to missed detection or false detection.

[0004] 2. Poor stability: The indwelling needle is not firmly fixed and is prone to displacement due to slight patient movement or operational errors, requiring repeated adjustments to the puncture path, increasing patient pain and operation time.

[0005] 3. Cumbersome operation: The puncture needle of the existing device lacks a limiting structure, which makes it easy to over-insert or retract, requiring the operator's experience to control, resulting in high learning costs and risks.

[0006] 4. Low efficiency of fixing components: Traditional fixing methods rely on external tape or manual pressing, which cannot provide stable clamping force, causing the syringe to shake and affecting the sampling accuracy.

[0007] To address the aforementioned issues, there is an urgent need for a thyroid biopsy device that is structurally optimized, easy to operate, and highly stable, in order to improve biopsy efficiency and reduce the risk of trauma to patients. Utility Model Content

[0008] To overcome the problems in the prior art, this utility model provides a thyroid puncture device.

[0009] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0010] A thyroid biopsy device, comprising:

[0011] The shell has a circular groove with internal threads at the bottom, and a slide rail coaxial with the groove is opened through the top of the groove. A rectangular observation port is provided in the middle of the side wall of the slide rail, and longitudinal scale lines are provided on both sides of the observation port.

[0012] An indwelling needle includes a needle sleeve with threads on the outer wall and a needle tube that passes through the needle sleeve, wherein the needle sleeve is screwed into a circular groove by threads;

[0013] The puncture needle consists of a needle core, a needle tip, and a circular plate. The needle core is slidably disposed inside the needle tube, with a sampling port near its tip. The needle tip is fixed to the top of the needle core and has a horizontal marking line at the bottom. The diameter of the circular plate is larger than the width of the slide. The puncture needle slides along the slide, so that the marking line corresponds to the scale line in real time, indicating the positional relationship between the tip of the needle core and the outlet of the needle tube.

[0014] The fixation assembly includes a fixation seat and a fixation sleeve fitted onto the needle tube. The fixation seat includes a circular base and an integrally formed fixation tube. The fixation tube is divided into a threaded part, a beveled extrusion part, and a connecting part from top to bottom. The fixation sleeve includes a threaded sleeve that engages with the threaded part and an extrusion sleeve that matches the beveled extrusion part. When the fixation sleeve is tightened, the extrusion sleeve applies radial extrusion force to the beveled extrusion part, causing the fixation seat to lock the needle tube and conform to the patient's skin.

[0015] Furthermore, the slide is matched with the needle. When the needle slides to the bottom of the slide, the needle abuts against the top of the needle sleeve, and the circular plate abuts against the upper opening of the slide, forming a bidirectional limiting.

[0016] Furthermore, the bottom of the needle sleeve is provided with a circular limiting plate, the outer diameter of which is larger than the inner diameter of the circular groove. When the needle sleeve is fully screwed into the circular groove, the limiting plate and the bottom surface of the housing form an interference fit.

[0017] Furthermore, the inclination angle of the inclined extrusion part is 15°-30°, and the inner tube of the inclined extrusion part is provided with friction texture at the point where it is in close contact with the needle tube to enhance the clamping stability of the needle tube.

[0018] The beneficial effects of this utility model are:

[0019] 1. Precise positioning and visual operation: The observation port and scale lines, together with the marking lines, provide real-time feedback on the needle core position. Operators can accurately control the puncture depth without relying on experience, significantly reducing the risk of accidental puncture.

[0020] 2. Dual-limiting design ensures safety: The needle tip and the circular plate of the puncture needle provide bidirectional limiting, preventing excessive insertion that could damage deep tissues or retraction that could lead to sampling failure. This design is especially suitable for novice doctors.

[0021] 3. Efficient fixation and improved stability: The inclined extrusion design of the fixation component, combined with friction texture, provides uniform radial pressure, ensuring that the needle does not wobble during complex operations; the base conforms to the skin, reducing indwelling needle displacement and improving the success rate of puncture on the first attempt.

[0022] 4. Modular design simplifies the process: The indwelling needle and the housing are quickly installed via threads, and the clamping component can be tightened to complete the clamping. The overall operation process is standardized, reducing the operation time by about 30%.

[0023] 5. Anti-loosening and durability optimization: The limit plate and interference fit design extend the service life of the device and avoid thread wear or loosening caused by frequent use. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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.

[0025] Figure 1 This is a three-dimensional schematic diagram of the device of this utility model;

[0026] Figure 2 This is a schematic diagram of the explosion of the novel device.

[0027] Figure 3 This is a side view of the device of this utility model;

[0028] Figure 4 This is the utility model Figure 3 Sectional view of AA;

[0029] Figure 5 This is the utility model Figure 4 Enlarged view of a section at point B in the middle;

[0030] Figure 6 This is the utility model Figure 4 Enlarged view of a section at point C;

[0031] Figure 7 This is the utility model Figure 4 Enlarged view of a section at point D;

[0032] 1-Shell, 11-Circular groove, 12-Slide, 13-Observation port, 14-Scale line; 2-Indwelling needle, 21-Needle sleeve, 22-Needle tube, 23-Limiting plate; 3-Punch needle, 31-Needle core, 32-Needle tip, 33-Circular plate, 34-Marking line, 35-Sampling port; 4-Fixing assembly, 41-Fixing base, 411-Base, 412-Fixing tube, 413-Threaded part, 414-Beveled extrusion part, 415-Connecting part, 42-Fixing sleeve, 421-Threaded sleeve, 422-Extrusion sleeve. Detailed Implementation

[0033] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] See Figures 1 to 7 The present invention provides a thyroid puncture device, which specifically includes the following components and operating method:

[0036] Housing 1: The bottom of housing 1 is provided with a circular groove 11 with internal threads for installing indwelling needle 2. A slide 12 coaxial with the circular groove 11 is opened through the inside. A rectangular observation port 13 is provided in the middle of the side wall of slide 12, and longitudinal scale lines 14 are marked on both sides.

[0037] Function: The slide 12 provides a sliding path for the puncture needle 3, and the observation port 13 works with the scale line 14 to achieve visual monitoring of the puncture depth.

[0038] Indwelling needle 2: includes a needle sleeve 21 with threads on the outer wall and a needle tube 22 that passes through the needle sleeve. The needle sleeve 21 is screwed into the circular groove 11 of the housing 1 by threads to ensure that it is coaxially fixed with the housing.

[0039] Function: The needle tube (22) serves as a guide channel for the puncture needle (3), ensuring that the needle core (31) accurately penetrates the target tissue.

[0040] Puncture needle 3: Composed of needle core 31, needle tip 32 and circular plate 33. Needle core 31 is a solid metal rod with a sampling port 35 near the tip; needle tip 32 is fixed to the top of needle core and has a horizontal marking line 34 at the bottom; circular plate 33 has a diameter larger than the width of slide 12 and is used for manual operation and limiting.

[0041] Application method: The puncture needle 3 is inserted into the needle tube 22 along the slide 12. The positional relationship between the tip of the needle core 31 and the outlet of the needle tube 22 is determined by comparing the marking line 34 and the scale line 14 in real time through the observation port 13. When the puncture needle is pressed down, the needle core 31 gradually extends out of the needle tube 22. After the sampling port 35 is exposed, the puncture needle is pulled back to complete the tissue scraping.

[0042] Fixing component 4 includes a fixing base 41 and a fixing sleeve 42 fitted onto the needle tube 22. The fixing base 41 consists of a circular base 411 and a fixing tube 412, which is divided into a threaded part 413, a beveled pressing part 414, and a connecting part 415 from top to bottom. The fixing sleeve 42 includes a threaded sleeve 421 and a pressing sleeve 422.

[0043] Application method: Insert the fixing base 41 into the needle tube 22, and the base 411 is close to the patient's skin. When tightening the fixing sleeve 42, the squeezing sleeve 422 moves down along the inclined squeezing part 414, generating radial squeezing force, so that the fixing tube 412 clamps the needle tube 22, and at the same time the base 411 is stably attached to the skin.

[0044] Function: To prevent the needle tube 22 from shaking or the indwelling needle 2 from shifting during the procedure, ensuring a precise puncture path. Through the real-time alignment of the scale line 14 and the marker line 34, the operator can precisely control the puncture depth with an error of less than 1 mm.

[0045] The inclined compression design of the fixation component 4 provides uniform clamping force, reducing the intraoperative needle displacement to less than 0.5mm, significantly improving sampling accuracy.

[0046] Example 2

[0047] This embodiment further defines the cooperation method between the slide 12 and the needle 32, and the specific implementation is as follows:

[0048] See figure Figure 3 , Figure 4 As shown, this device adopts a bidirectional limiting design: the width of the slide 12 is slightly larger than the width of the needle 32, but smaller than the diameter of the circular groove 11. When the puncture needle 3 is pressed down to the bottom of the slide 12, the bottom surface of the needle 32 abuts against the top of the needle sleeve 21, forming the first limiting; at the same time, the diameter of the circular plate 33 is larger than the width of the slide 12, and the circular plate 33 abuts against the upper opening of the slide 12, forming the second limiting.

[0049] Application: When the puncture needle 3 slides to the limiting point, the sampling port 35 is just fully exposed outside the needle tube 22. At this point, the operator can pull back to collect the sample without additional measurement, avoiding excessive insertion and damage to blood vessels or nerves. The bidirectional limiting design standardizes the puncture depth, reducing reliance on operator experience, and is especially suitable for novice doctors. The circular plate 33 provides clear tactile feedback, ensuring that the operator perceives the limiting point and preventing misoperation.

[0050] Example 3

[0051] See Figure 4 , Figure 5 This embodiment optimizes the limiting plate 23 of the needle sleeve 21, and the implementation details are as follows:

[0052] Anti-loosening structure: A circular limiting plate 23 is added to the bottom of the needle sleeve 21, the outer diameter of which is larger than the inner diameter of the circular groove 11. When the needle sleeve 21 is fully screwed into the circular groove 11, the limiting plate 23 forms an interference fit with the bottom surface of the housing 1.

[0053] Application: When installing the indwelling needle 2, tighten the needle sleeve 21 until the limiting plate 23 contacts the housing 1. The interference fit provides reverse resistance to prevent the needle sleeve from loosening due to vibration or operation during the procedure. The limiting plate 23 is designed to extend the life of the threaded connection and avoid thread wear caused by frequent disassembly. The interference fit ensures a stable connection between the indwelling needle 2 and the housing 1, reducing the number of adjustments required during the procedure.

[0054] Example 4

[0055] See Figure 2 , Figure 3 , Figure 6 As shown, this embodiment optimizes the design of the inclined extrusion part 414 of the fixing component 4, and the specific implementation is as follows:

[0056] Enhanced clamping stability: The inclined angle of the inclined extrusion part 414 is 20°, and a diamond-shaped friction texture is added to the inner wall of the part that contacts the needle tube 22, with a texture depth of 0.05mm.

[0057] Application: When tightening the retaining sleeve 42, the compression sleeve 422 slides along the inclined compression section 414, and the friction texture creates a microscopic engagement with the surface of the needle tube 22, increasing the clamping force by approximately 30%. The friction texture design makes the clamping force distribution more uniform, further reducing the displacement of the needle tube 22 to below 0.2mm. The 20° tilt angle balances the relationship between tightening force and clamping force, allowing the operator to complete the fixation with only one hand.

[0058] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A thyroid puncture device, characterized in that, include: The housing (1) has a circular groove (11) with internal threads at the bottom. A slide (12) coaxial with the circular groove (11) is opened through the top of the circular groove (11). A rectangular observation port (13) is provided in the middle of the side wall of the slide (12). Longitudinal scale lines (14) are provided on both sides of the observation port (13). The indwelling needle (2) includes a needle sleeve (21) with threads on the outer wall and a needle tube (22) that passes through the needle sleeve (21). The needle sleeve (21) is screwed into the circular groove (11) by threads. The puncture needle (3) consists of a needle core (31), a needle tip (32), and a circular plate (33). The needle core (31) is slidably disposed inside the needle tube (22), and a sampling port (35) is opened near its tip. The needle tip (32) is fixed to the top of the needle core (31), and a horizontal marking line (34) is provided at the bottom. The diameter of the circular plate (33) is larger than the width of the slide (12). The puncture needle (3) slides along the slide (12) so that the marking line (34) corresponds to the scale line (14) in real time, so as to indicate the positional relationship between the tip of the needle core (31) and the outlet of the needle tube (22). The fixing component (4) includes a fixing seat (41) and a fixing sleeve (42) fitted onto the needle tube (22). The fixing seat (41) includes a circular base (411) and an integrally formed fixing tube (412). The fixing tube (412) is divided into a threaded part (413), a beveled extrusion part (414), and a connecting part (415) from top to bottom. The fixing sleeve (42) includes a threaded sleeve (421) that screws into the threaded part (413) and an extrusion sleeve (422) that matches the beveled extrusion part (414). When the fixing sleeve (42) is tightened, the extrusion sleeve (422) applies radial extrusion force to the beveled extrusion part (414), so that the fixing seat (41) locks the needle tube (22) and fits against the patient's skin.

2. The thyroid biopsy device according to claim 1, characterized in that: The slide (12) is matched with the needle (32). When the needle (32) slides to the bottom of the slide (12), the needle (32) abuts against the top of the needle sleeve (21), and the circular plate (33) abuts against the upper opening of the slide (12) at the same time, forming a bidirectional limiting.

3. The thyroid biopsy device according to claim 1, characterized in that: The needle sleeve (21) is provided with a circular limiting plate (23) at the bottom. The outer diameter of the limiting plate (23) is larger than the inner diameter of the circular groove (11). When the needle sleeve (21) is fully screwed into the circular groove (11), the limiting plate (23) and the bottom surface of the shell (1) form an interference fit.

4. A thyroid biopsy device according to claim 1, characterized in that: The inclined angle of the inclined extrusion part (414) is 15°-30°, and the inner tube of the inclined extrusion part (414) is provided with friction texture at the point where it is close to the needle tube (22) to enhance the clamping stability of the needle tube (22).

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