Multifunctional thyroid puncture sampling needle

Abstract

The utility model relates to a multifunctional thyroid puncture sampling needle which comprises an outer needle and an inner needle, the outer needle and the inner needle are hollow, the inner needle can be driven to slide in the extending direction of the outer needle, a cell extraction part is arranged at the tip end of the inner needle, and a tissue extraction part is arranged on the side wall of the inner needle. An adjusting part for adjusting the size of an extraction notch of the tissue extraction part is arranged on the inner needle, when the inner needle is driven to extend outwards along the outer needle, the cell extraction part extends out of the end part of the outer needle to extract a cell sample, and the tissue extraction part cuts the tissue sample along with the sliding of the inner needle. According to the multifunctional thyroid puncture sampling needle disclosed by the utility model, the tissue sampling part is arranged on the side wall of the inner needle, and meanwhile, the cell extraction part is arranged on the tip end of the inner needle for respectively collecting cells and tissue samples, so that histology and cytology evaluation can be simultaneously carried out; meanwhile, the cavity between the inner needle and the outer needle is used for storing samples, so that the pollution risk and the operation complexity are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of thyroid puncture, in particular to a multifunctional thyroid puncture sampling needle. Background Technique

[0002] After experiencing rapid development in the early stage, the development of fine needle aspiration (FNA) of thyroid nodules has entered a bottleneck period. Although a variety of new methods, including BRAF gene detection, have been applied clinically, these new methods still essentially focus on the microscopic level such as cells or genes. In reality, FNA still faces a relatively high proportion of unqualified specimens and specimens that cannot be clearly diagnosed by simple cytological evaluation (such as the diagnosis of undifferentiated carcinoma, follicular carcinoma, and lymphoma requires the help of immunohistochemistry), while histological pathological examination may solve these problems.

[0003] Traditional histological puncture pathology is obtained through a puncture needle. The puncture needle achieves the purpose of cutting and obtaining tissue by activating an internal spring device. Due to its thick needle diameter (18G or thicker), the risk of bleeding is high, and severe bleeding may also bring the risk of asphyxia. The cutting hole of the puncture needle is located in the middle part of the needle rather than the tip, so there is a length at the front end of the needle without cutting effect, so it cannot be used for nodules close to important blood vessels. In addition, histological specimens require more processing time, so they cannot be immediately diagnosed on-site like cytological specimens, and may thus delay the management of patients. Content of the Utility Model

[0004] The purpose of the utility model is to provide a multifunctional thyroid puncture sampling needle, aiming to facilitate the solution of the problem that the existing puncture needle cannot perform cell sampling and tissue sampling simultaneously and has a single function.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a multifunctional thyroid puncture sampling needle, including an outer needle and an inner needle inserted into the outer needle. The interiors of the outer needle and the inner needle are both hollowly arranged, and the inner needle is driven to be able to slide along the extension direction of the outer needle;

[0006] The tip of the inner needle is provided with a cell extraction part, the side wall of the inner needle is provided with a tissue extraction part for sampling, and an adjusting part for adjusting the extraction incision size of the tissue extraction part is arranged on the inner needle;

[0007] When the inner needle is driven to extend outwards along the outer needle, the cell extraction part extends out from the end of the outer needle to extract a cell sample; as the inner needle retracts into the outer needle, the tissue extraction part cuts the tissue sample along with the sliding of the inner needle, and the cell extraction part and the tissue extraction part deposit the sample into the space formed between the outer needle and the inner needle.

[0008] Further, a cap is provided at the top of the inner needle, the cap is slidably connected to the outer needle, a baffle is slidably arranged inside the inner needle, and the baffle is correspondingly arranged with the tissue extraction part;

[0009] The adjusting part includes an adjusting column connected to the baffle and an adjusting turntable arranged on the cap, a plurality of adjusting holes are arranged on the adjusting turntable, and the adjusting column passes through different adjusting holes to drive the baffle to control the size of the extraction incision.

[0010] Further, the adjusting turntable is rotatably connected to the cap.

[0011] Further, the distances from the ends of the adjusting holes to the center of the adjusting turntable are all different, and the adjusting holes communicate with the center of the adjusting turntable.

[0012] Further, the adjusting holes are radially distributed on the adjusting turntable from the center to the periphery.

[0013] Further, a tension spring for guiding the reset of the adjusting column is arranged between the adjusting column and the top of the inner needle.

[0014] Further, a first avoidance groove for avoiding the sliding of the baffle and the adjusting column is arranged inside the cap, and the first avoidance groove extends along the axial direction of the cap.

[0015] Further, a second avoidance groove for avoiding the sliding of the adjusting column is arranged on the side wall of the outer needle.

[0016] Further, the tissue sampling part includes a reverse bevel side hole opened on the side wall of the inner needle and facing the top of the inner needle, and a cutting edge is provided on the hole wall of the reverse bevel side hole along the extending direction of the inner needle.

[0017] Further, the cell extraction part includes a tip extraction blade arranged at the tip of the inner needle.

[0018] The beneficial effects of a multifunctional thyroid puncture sampling needle provided by the present utility model are as follows:

[0019] Compared with the prior art, a multifunctional thyroid puncture sampling needle of the present utility model is provided. By arranging a tissue sampling part on the side wall of the inner needle and a cell extraction part on the tip of the inner needle, the collection of cell and tissue samples is carried out respectively, so as to achieve the effect of being able to provide histological samples for immunohistochemistry and cytological aspiration specimens for on-site evaluation, and it is safe, simple and easy to operate. At the same time, the cavity between the inner and outer needles is used to store samples, reducing the risk of contamination and the complexity of operation.

[0020] By arranging a baffle and an associated adjustment part on the inner needle, the operator can adjust the incision size of the tissue extraction part according to needs, which greatly enhances the sampling flexibility and meets different clinical sampling requirements.

[0021] The design of multiple adjustment holes on the adjustment turntable enables the adjustment column to be fixed at different positions, thereby changing the position of the baffle and controlling the sampling size. The radial distribution and different distances of the adjustment holes make the adjustment more intuitive and accurate.

[0022] Through the built-in tension spring, the adjustment column can automatically reset when not under external force, ensuring the overall stability and reusability of the adjustment part. The rotatable connection between the adjustment turntable and the cap is convenient for doctors to quickly adjust during operation. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of a multifunctional thyroid puncture sampling needle provided by an embodiment of the present utility model;

[0025] Figure 2 It is an exploded view of the structure of a multifunctional thyroid puncture sampling needle provided by an embodiment of the present utility model;

[0026] Figure 3 It is a schematic diagram of the partial cross-sectional structure of a multifunctional thyroid puncture sampling needle provided by an embodiment of the present utility model;

[0027] Figure 4 It is a partial assembly drawing of the baffle, inner needle and outer needle provided by an embodiment of the present utility model;

[0028] Figure 5 It is a schematic diagram of the structure of the adjustment knob provided by an embodiment of the present utility model;

[0029] Figure 6 Schematic structural diagram of the cap provided by the embodiment of the present utility model.

[0030] In the figure: 1. Outer needle; 11. Second avoidance groove; 2. Inner needle; 21. Cell extraction part; 22. Tissue extraction part; 221. Reverse bevel side hole; 222. Cutting edge; 23. Baffle; 3. Cap; 31. First avoidance groove; 311. First part; 312. Second part; 32. Annular clamping groove; 4. Adjusting part; 41. Adjusting column; 42. Adjusting turntable; 421. Adjusting hole position; 422. Annular clamping ring; 43. Tension spring. Detailed implementation manners

[0031] In order to make the technical problems, technical solutions and beneficial effects to be solved by this embodiment clearer, the following further describes this embodiment in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this embodiment and are not used to limit this embodiment.

[0032] Please refer to Figures 1 to 6 , and now a multifunctional thyroid puncture sampling needle provided by this embodiment is described. A multifunctional thyroid puncture sampling needle of this embodiment includes an outer needle 1 and an inner needle 2 inserted into the outer needle 1. The interiors of the outer needle 1 and the inner needle 2 are both hollowly arranged, and the inner needle 2 is driven to be able to slide along the extension direction of the outer needle 1. In addition, a cell extraction part 21 is provided at the tip of the inner needle 2, a tissue extraction part 22 for sampling is provided on the side wall of the inner needle 2, and an adjusting part 4 for adjusting the extraction incision size of the tissue extraction part 22 is provided on the inner needle 2.

[0033] When the inner needle 2 is driven to extend outwards along the outer needle 1, the cell extraction part 21 extends out from the end of the outer needle 1 to extract cell samples; as the inner needle 2 retracts into the outer needle 1, the tissue extraction part 22 cuts the tissue sample along with the sliding of the inner needle 2, and the cell extraction part 21 and the tissue extraction part 22 deposit the samples into the space formed between the outer needle 1 and the inner needle 2.

[0034] A multifunctional thyroid puncture sampling needle of this embodiment is provided with a tissue sampling part on the side wall of the inner needle 2 and a cell extraction part 21 at the tip of the inner needle 2 to collect cell and tissue samples respectively, so as to achieve the effect of being able to provide histological samples for immunohistochemistry and cytological aspiration specimens for on-site evaluation. At the same time, the space between the inner needle 2 and the outer needle 1 is used to store the samples, reducing the risk of contamination and the complexity of operation, thereby enhancing the overall sampling and diagnostic ability of the puncture needle.

[0035] Based on the overall description of the above structure, an exemplary structure of a multi-functional thyroid puncture sampling needle in this embodiment is as shown in the figure. Both the outer needle 1 and the inner needle 2 are hollow tubular structures, and the inner needle 2 is slidably disposed inside the outer needle 1.

[0036] Referring to Figure 1 and Figure 2 as shown in, a cap 3 is provided at the end of the inner needle 2. The cap 3 is fixedly connected to the top of the inner needle 2, or can be set to be detachably connected, for example, snap-connected by means of a buckle or the like. In the assembled state, the inner needle 2 and the cap 3 are in a fixed connection state, and the cap 3 is slidably connected to the outer needle 1, which is convenient for the operator to drive the inner needle 2 to slide inside the outer needle 1 by applying a pulling force to the cap 3 to extract the sample.

[0037] Among them, preferably, a cell extraction part 21 is provided at the tip part of the inner needle 2, and a tissue extraction part 22 is provided at the side wall part of the inner needle 2. As Figure 2 shown, the tissue extraction part 22 is opened on the side opposite to the cell extraction part 21, so that the cell extraction part 21 and the tissue extraction part 22 can work independently of each other without interference. The cell extraction part 21 is located at the tip of the needle tip and is usually used for cutting cytoplasm, while the tissue extraction part 22 is specifically used for cutting and collecting tissue samples. This separation design helps to obtain purer cell and tissue samples, facilitating subsequent pathological analysis.

[0038] Among them, in this embodiment, as a specific preferred implementation manner, still referring to Figure 2 as shown in, the cell extraction part 21 includes a tip extraction blade provided at the tip of the inner needle 2. The tissue sampling part includes a reverse bevel side hole 221 opened on the side wall of the inner needle 2 and facing the top of the inner needle 2, and a cutting edge 222 is provided on the hole wall of the reverse bevel side hole 221 along the extending direction of the inner needle 2.

[0039] During use, a cytological specimen is obtained by moving the tip extraction blade back and forth for cutting. When the inner needle 2 is pulled backward, a histological specimen is scraped by the cutting edge 222 on the reverse bevel side hole 221.

[0040] In this embodiment, in order to improve the sampling flexibility of the sampling needle, preferably, a baffle 23 is slidably disposed inside the inner needle 2. As Figure 3 and Figure 4 shown, the position of the baffle 23 is correspondingly set with the reverse bevel side hole 221 to be able to adjust the size of the extraction incision formed between the hole wall of the reverse bevel side hole 221 and the baffle 23, so as to meet different sampling requirements, and the above-mentioned adjusting part 4 is provided to drive the baffle 23 to slide to realize the adjustment process.

[0041] Preferably, as Figures 2 to 6As shown, the above-mentioned adjusting part 4 includes an adjusting column 41 connected to the baffle 23 and an adjusting turntable 42 provided on the cap 3. A plurality of adjusting holes 421 are provided on the adjusting turntable 42. The adjusting column 41 is inserted into different adjusting holes 421 to drive the baffle 23 to slide relative to the tissue extraction part 22, and the bottom end of the baffle 23 covers part of the extraction incision from the inside of the inner needle 2 to achieve the regulation of the size of the extraction incision.

[0042] The adjusting turntable 42 is detachably provided on one side of the cap 3, and the adjusting turntable 42 is rotatably connected to the cap 3, so that the operator can conveniently rotate the adjusting turntable 42 to realize the conversion of the adjusting column 41 between different adjusting holes 421. As a specific preferred embodiment, referring to Figure 2 , Figure 5 and Figure 6 shown, an annular retaining ring 422 is provided on the side of the adjusting turntable 42 facing the cap 3, and a corresponding annular slot 32 for inserting the annular retaining ring 422 is provided on the cap 3. By inserting the annular retaining ring 422 into the annular slot 32, the clamping connection between the adjusting turntable 42 and the cap 3 is realized, and at the same time, the adjusting turntable 42 can also rotate relative to the cap 3.

[0043] Among them, the distances from the ends of the respective adjusting holes 421 on the adjusting turntable 42 to the center of the adjusting turntable 42 are all different, and the respective adjusting holes 421 communicate with the center of the adjusting turntable 42. Thus, when the adjusting column 41 enters different adjusting holes 421, the position of the baffle 23 relative to the reverse bevel side hole 221 is also different, so as to achieve the adjustment effect.

[0044] To facilitate the smooth realization of the conversion process of the adjusting column 41 between different adjusting holes 421, preferably, the respective adjusting holes 421 are radially distributed on the adjusting turntable 42 from the center to the periphery. By rotating the adjusting turntable 42, the relative position between the adjusting hole 421 and the adjusting column 41 is changed, so as to facilitate the completion of the adjustment process. In this embodiment, 4 adjusting holes 421 are provided on the adjusting turntable 42. It can be understood that different numbers of adjusting holes 421 can also be set according to actual needs, and no further limitation is made here.

[0045] In addition, in this embodiment, a tension spring 43 for guiding the reset of the adjusting column 41 is provided between the adjusting column 41 and the top of the inner needle 2. Specifically, referring to Figure 3 and Figure 4 shown, one end of the tension spring 43 is connected to the adjusting column 41, and the other end of the tension spring 43 is connected to the top end of the inner needle 2. When the adjusting column 41 is driven to move up and down by an external force, the tension spring 43 starts to store energy. When the external force is removed, the adjusting column 41 can be driven by the elastic force of the tension spring 43 to drive the adjusting column 41 to reset.

[0046] Therefore, the bottom of the inner needle 2 should be lower than the top of the baffle 23 to facilitate the smooth sliding of the adjusting column 41 driving the baffle 23. Or a through hole with a certain length is provided on the side wall of the inner needle 2, and a tension spring 43 is arranged in the through hole. The adjusting column 41 can pass through the through hole and move up and down. The specific structure can be designed and processed according to actual needs and will not be specifically limited here.

[0047] Meanwhile, in this embodiment, a first avoidance groove 31 for avoiding the sliding of the baffle 23 and the adjusting column 41 is provided in the cap 3, and the first avoidance groove 31 extends along the axis direction of the cap 3. Specifically, as Figure 6 shown, since the height of the top end of the baffle 23 is higher than that of the adjusting column 41, the first avoidance groove 31 is composed of two parts. The first part 311 is used to avoid the adjusting column 41, and the second part 312 is used to avoid the baffle 23, and the first part 311 and the second part 312 are communicated.

[0048] Moreover, a second avoidance groove 11 for avoiding the sliding of the adjusting column 41 is provided on the side wall of the outer needle 1 to ensure the smooth progress of the movement process of the adjusting column 41 and avoid interference.

[0049] In the process of using a multifunctional thyroid puncture sampling needle of this embodiment, the operator raises the adjusting column 41 to the center of the adjusting turntable 42 and rotates the adjusting turntable 42 according to requirements so that the adjusting column 41 corresponds to the required adjusting hole position 421. Then, the external force on the adjusting column 41 is removed, and the adjusting column 41 enters the adjusting hole position 421 under the action of the tension spring 43. When the adjusting column 41 slides downward, the baffle 23 also slides along the inner wall of the inner needle 2. At this time, a extraction opening with a certain size is formed between the lower end of the baffle 23 and the reverse bevel side hole 221 to facilitate the extraction of tissue samples.

[0050] After adjusting the size of the extraction opening, the operator inserts the entire puncture sampling needle into the part to be sampled, holds the outer needle 1 with one hand, and holds the cap 3 with the other hand and applies force to the cap 3 to drive the inner needle 2 to reciprocate relative to the outer needle 1, so that the cutting edge 222 on the reverse bevel side hole 221 cuts the tissue sample and enters the inner needle 2 through the extraction incision for temporary storage; at the same time, the tip extraction edge at the tip of the inner needle 2 can also complete the cutting and extraction of cell samples.

[0051] A multifunctional thyroid puncture sampling needle according to this embodiment provides the possibility of extracting thyroid histological specimens for the problem that the thyroid is a superficial organ, only a few centimeters away from the skin, and the length of general tissue sampling puncture needles is relatively long, making it difficult to perform tissue sampling. At the same time, it will not increase additional trauma, thus enabling the possibility of simultaneous cytological evaluation or histological evaluation with the thyroid puncture needle. The multifunctional thyroid puncture sampling needle in this embodiment is a highly integrated, flexible to operate, and high-efficiency sampling medical tool, which can provide a more accurate and convenient way to obtain samples for the diagnosis of thyroid diseases.

[0052] The above are only the preferred embodiments of this embodiment and are not intended to limit this embodiment. Any modifications, equivalent replacements, and improvements made within the spirit and principles of this embodiment shall be included within the protection scope of this embodiment.

Claims

1. A multifunctional thyroid puncture sampling needle, characterized in that, It includes an outer needle (1) and an inner needle (2) disposed within the outer needle (1). Both the interior of the outer needle (1) and the inner needle (2) are hollow, and the inner needle (2) is driven to be slidable along the extension direction of the outer needle (1). A cell extraction part (21) is provided at the tip of the inner needle (2). A tissue extraction part (22) for sampling is provided on the side wall of the inner needle (2), and an adjustment part (4) for adjusting the extraction incision size of the tissue extraction part (22) is provided on the inner needle (2). When the inner needle (2) is driven to extend outward along the outer needle (1), the cell extraction part (21) extends from the end of the outer needle (1) to extract a cell sample. As the inner needle (2) retracts into the outer needle (1), the tissue extraction part (22) cuts the tissue sample as the inner needle (2) slides, and the cell extraction part (21) and the tissue extraction part (22) deposit the sample into the space formed between the outer needle (1) and the inner needle (2).

2. The multifunctional thyroid puncture sampling needle according to claim 1, characterized in that A cap (3) is provided at the top of the inner needle (2). The cap (3) is slidably connected to the outer needle (1). A baffle (23) is slidably disposed inside the inner needle (2), and the baffle (23) is correspondingly arranged with the tissue extraction part (22). The adjustment part (4) includes an adjustment column (41) connected to the baffle (23) and an adjustment turntable (42) provided on the cap (3). A plurality of adjustment holes (421) are provided on the adjustment turntable (42), and the adjustment column (41) passes through different adjustment holes (421) to drive the baffle (23) to adjust the size of the extraction incision.

3. The multifunctional thyroid puncture sampling needle according to claim 2, characterized in that The adjustment turntable (42) is rotatably connected to the cap (3).

4. The multifunctional thyroid puncture sampling needle according to claim 3, characterized in that The distances from the ends of each adjustment hole (421) to the center of the adjustment turntable (42) are all different, and each adjustment hole (421) communicates with the center of the adjustment turntable (42).

5. The multifunctional thyroid puncture sampling needle according to claim 4, characterized in that Each adjustment hole (421) is radially distributed on the adjustment turntable (42) from the center to the periphery.

6. The multifunctional thyroid puncture sampling needle according to claim 2, characterized in that A tension spring (43) for guiding the reset of the adjustment column (41) is provided between the adjustment column (41) and the top of the inner needle (2).

7. The multifunctional thyroid puncture sampling needle according to claim 6, characterized in that A first avoidance groove (31) for avoiding the sliding of the baffle (23) and the adjustment column (41) is provided inside the cap (3), and the first avoidance groove (31) extends along the axis direction of the cap (3).

8. A multifunctional thyroid puncture sampling needle according to claim 2, wherein a second avoidance groove (11) for avoiding the sliding of the adjustment column (41) is provided on the side wall of the outer needle (1).

9. A multifunctional thyroid puncture sampling needle according to any one of claims 1 to 8, wherein the tissue sampling part includes an anti-inclined angle side hole (221) formed on the side wall of the inner needle (2) and facing the top end of the inner needle (2), and a cutting edge (222) is provided on the hole wall of the anti-inclined angle side hole (221) along the extension direction of the inner needle (2).

10. A multifunctional thyroid puncture sampling needle according to claim 9, wherein the cell extraction part (21) includes a tip extraction blade provided at the tip of the inner needle (2).

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