A lung cancer tissue sample rapid collection device

Abstract

The utility model belongs to medical instrument technical field, concretely relates to a lung cancer tissue sample rapid collection device, including sampling cylinder, one end of sampling cylinder is provided with outer needle tube, the outer needle tube is connected with sampling cylinder and forms the communication structure through luer joint, and the end of outer needle tube is handled with open blade, the inside of outer needle tube is provided with inner needle rod, one end of inner needle rod extends to the inside of sampling cylinder from the inside of outer needle tube, and the outside of inner needle rod is provided with spiral blade, the inside of sampling cylinder is slidably connected with piston, and inner needle rod is fixedly connected with piston, the end of piston away from inner needle rod is fixed with threaded column. This utility model can utilize the spiral cutting characteristic of spiral blade, shorten sample acquisition time, and the spiral winding mode can keep the tissue form completely, reduce sample fragmentation and loss, through the threaded transmission structure of threaded column and split nut, medical staff can accurately control the advancing depth of inner needle rod, ensure the accuracy of sample collection position.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a rapid lung cancer tissue sample collection device. Background Technology

[0002] Lung cancer is the most common malignant tumor of the lungs. The vast majority of lung cancers originate from the bronchial mucosal epithelium, hence the name bronchogenic carcinoma. Research on lung cancer tumors is of great significance to the medical field. Currently, lung cancer tissue specimens obtained through surgery are the core resource for lung cancer tumor research.

[0003] However, traditional methods for collecting lung cancer tissue samples, such as single-cut or forceps biopsies, have significant technical limitations: on the one hand, single-operation efficiency is low, and multiple sampling not only prolongs the operation time but also increases the risk of wound infection for patients; on the other hand, the forceps or cutting process easily causes tissue sample fragmentation and morphological damage, leading to the loss of effective detectable components and affecting the accuracy of pathological analysis. Furthermore, existing collection devices mostly rely on manual advancement, making it difficult to precisely control the sampling depth and force, easily resulting in sample collection position deviations and even damage to normal lung tissue. Based on these problems, this application proposes a rapid lung cancer tissue sample collection device to improve upon these issues. Utility Model Content

[0004] The purpose of this invention is to provide a rapid lung cancer tissue sample collection device that utilizes the helical cutting characteristics of the spiral blades to upgrade traditional single-cut or clamping to continuous rotary collection, significantly shortening sample acquisition time. The helical winding method can completely preserve the tissue morphology, reducing sample fragmentation and loss. Through the threaded transmission structure of the threaded column and split nuts, the rotational motion can be converted into linear displacement, allowing medical staff to precisely control the advancement depth of the inner needle rod and ensure the accuracy of the sample collection position.

[0005] The specific technical solution adopted in this utility model is as follows:

[0006] A rapid lung cancer tissue sample collection device includes a sampling tube with an outer needle tube at one end. The outer needle tube is connected to the sampling tube via a Luer connector, and the end of the outer needle tube is sharpened. An inner needle rod is located inside the outer needle tube, with one end extending from the inside of the outer needle tube into the inside of the sampling tube. A helical blade is located on the outer side of the inner needle rod. A piston is slidably connected inside the sampling tube, and the inner needle rod is fixedly connected to the piston. A threaded post is fixed to the end of the piston away from the inner needle rod. A fixing plate is fixed to the end of the sampling tube away from the outer needle tube. Two split nuts are located inside the fixing plate. The outer side of the threaded post has an external thread, and the two split nuts have internal threads on their adjacent sides. The internal and external threads are compatible, and a threaded connection is formed between the threaded post and the two split nuts.

[0007] In a preferred embodiment, limit rods are fixed on both sides of the upper ends of the two split nuts, the two limit rods extend into the interior of the fixed plate, and baffles are fixed to the upper ends of the two limit rods, and the two baffles are slidably connected to the fixed plate.

[0008] In a preferred embodiment, a spring is provided inside the fixing plate, the spring is located outside the limiting rod, and the end of the spring away from the baffle is fixedly connected to the fixing plate.

[0009] In a preferred embodiment, a movable rod is fixed to the upper end of each of the two split nuts, a threaded rod is threadedly connected to the internal thread of the fixing plate, and the threaded rod is located at the upper end of the movable rod, with a knob fixed to the end of the threaded rod away from the movable rod.

[0010] In a preferred embodiment, the outer side of the knob is provided with anti-slip texture, and the anti-slip texture is made of rubber.

[0011] In a preferred embodiment, a one-way valve is fixed to the outside of the sampling cylinder.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This practical device utilizes the helical cutting characteristics of the spiral blades to upgrade the traditional single cutting or clamping to continuous rotational collection, significantly shortening the sample acquisition time. The spiral winding method can completely preserve the tissue morphology and reduce sample fragmentation and loss. Through the threaded transmission structure of the threaded column and split nut, the rotational motion can be converted into linear displacement, enabling medical staff to accurately control the advancement depth of the inner needle rod and ensure the accuracy of the sample collection position. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the sampling cylinder of this utility model;

[0016] Figure 3 This is a schematic diagram of the internal structure of the fixing plate of this utility model.

[0017] The attached diagram lists the components represented by each number as follows:

[0018] 10. Sampling cylinder; 11. Outer needle tube; 12. Inner needle rod; 13. Spiral blade; 14. Piston; 15. Threaded column; 16. Fixing plate; 17. Split nut; 18. Limiting rod; 19. Baffle; 20. Spring; 21. Moving rod; 22. Threaded rod; 23. Knob; 24. Check valve. Detailed Implementation

[0019] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of this utility model. However, this utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of this utility model. The phrase "in a preferred embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0022] Secondly, this utility model is described in detail with reference to the schematic diagrams. When detailing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0023] Please see the appendix Figure 1 and Figure 2As shown, this utility model provides a rapid lung cancer tissue sample collection device, including a sampling cylinder 10. One end of the sampling cylinder 10 is provided with an outer needle tube 11, which is connected to the sampling cylinder 10 via a Luer connector. The end of the outer needle tube 11 is sharpened. An inner needle rod 12 is provided inside the outer needle tube 11, with one end extending from the inside of the outer needle tube 11 into the inside of the sampling cylinder 10. A spiral blade 13 is provided on the outer side of the inner needle rod 12. The sampling cylinder 10 is slidably connected to the inside of the sampling cylinder 10. A piston 14 is connected, and the inner needle rod 12 is fixedly connected to the piston 14. A threaded post 15 is fixed to the end of the piston 14 away from the inner needle rod 12. A fixing plate 16 is fixed to the end of the sampling cylinder 10 away from the outer needle tube 11. Two split nuts 17 are provided inside the fixing plate 16. The outer side of the threaded post 15 is provided with external threads. The two split nuts 17 are provided with internal threads on the side that is close to each other. The internal threads and external threads are compatible, and a threaded connection structure is formed between the threaded post 15 and the two split nuts 17.

[0024] In this embodiment, when the rapid lung cancer tissue sample collection device is working, the outer needle tube 11 is first inserted into the lung lesion area. In the initial state, the two split nuts 17 are closed. Because the threaded column 15 is threadedly connected to the two split nuts 17, a rotating block is fixed at the end of the threaded column 15 away from the piston 14. When the rotating block is rotated, the threaded column 15 is rotated. The rotation of the threaded column 15 drives the piston 14 and the inner needle rod 12 to rotate forward. During the advancement, the spiral blades 13 on the outside of the inner needle rod 12 spirally cut and entrain the lung cancer tissue sample, thus completing the sampling. After sampling, the knob 23 is rotated to pull the inner needle rod 12 and the sample on the spiral blades 13 back into the sampling cylinder 10, where the piston 14 retains the sample intact. By utilizing the spiral blades 13, tissue samples can be cut and obtained quickly and efficiently, saving more time compared to traditional sampling methods. The threaded connection structure facilitates precise control of the advancement and retraction of the inner needle rod 12, improving the accuracy and stability of sampling.

[0025] In a preferred embodiment, please refer to Figure 3 Limiting rods 18 are fixed on both sides of the upper end of the two split nuts 17. The two limiting rods 18 extend into the interior of the fixed plate 16. A baffle 19 is fixed at the upper end of the two limiting rods 18, and the two baffles 19 are slidably connected to the fixed plate 16. A spring 20 is provided inside the fixed plate 16. The spring 20 is located outside the limiting rods 18, and the end of the spring 20 away from the baffle 19 is fixedly connected to the fixed plate 16.

[0026] In this embodiment, in the lung cancer tissue sample collection device, the limiting rod 18 and the baffle 19 work together to provide precise constraint on the movement of the split nuts 17. When the two split nuts 17 are closed, the limiting rod 18 is in the limiting groove within the fixed plate 16, and the baffle 19 compresses the spring 20. When the two split nuts 17 need to be separated, the spring 20 pushes the baffle 19 to slide inside the fixed plate 16, causing the two split nuts 17 to separate, which facilitates the pulling of the threaded column 15. The closure of the two split nuts 17 ensures that the threaded column 15 can only rotate along the internal threads of the two split nuts 17, thereby stably converting the rotational force into the linear motion of the threaded column 15, enabling the inner needle rod 12 and the spiral blade 13 to advance precisely and smoothly. This improves the stability and reliability of the device operation.

[0027] Secondly, please refer to the following as well. Figure 3 The upper ends of the two split nuts 17 are fixed with moving rods 21. The fixed plate 16 is internally threaded with a threaded rod 22, and the threaded rod 22 is located at the upper end of the moving rod 21. A knob 23 is fixed at the end of the threaded rod 22 away from the moving rod 21.

[0028] In this embodiment, when the two knobs 23 are rotated to bring them closer together, the rotation of the two knobs 23 pushes the two moving rods 21 closer together, thereby pushing the two split nuts 17 closer together. When the two split nuts 17 are closed, the threaded column 15 can rotate. At this time, the two knobs 23 are no longer rotated. When the two split nuts 17 are separated, because the baffle 19 compresses the spring 20 when the two split nuts 17 are close together, the two knobs 23 are rotated in the opposite direction. When the two knobs 23 rotate, they no longer limit the moving rods 21. At this time, under the elastic force of the spring 20, the baffle 19 is pushed to move the limiting rod 18. The movement of the limiting rod 18 causes the two split nuts 17 to separate. When the two split nuts 17 are separated, the threaded column 15 can move away from the end of the outer needle tube 11, thereby facilitating the rapid and efficient acquisition of tissue samples.

[0029] To further understand and explain, Figure 3 For example, the outer side of knob 23 is provided with anti-slip texture, and the anti-slip texture is made of rubber.

[0030] In this embodiment, the rubber material itself is soft and elastic, generating strong friction when in contact with the fingers of medical personnel. The textured surface of the anti-slip pattern further increases the roughness of the contact surface, effectively preventing the knob 23 from slipping due to sweaty hands or uneven force during operation.

[0031] In a preferred embodiment, please refer to Figure 1 A one-way valve 24 is fixed on the outside of the sampling cylinder 10.

[0032] In this embodiment, the one-way valve 24 is characterized by allowing gas or liquid to flow in only one direction (e.g., from inside the sampling cylinder 10 to the outside). During sample collection, when the piston 14 is pulled back (moving away from the end of the outer needle tube 11), a negative pressure is created inside the sampling cylinder 10. The tissue sample is drawn into the sampling cylinder 10 by the spiral blades 13 inside the outer needle tube 11, and the one-way valve 24 is closed at this time. Conversely, when the piston 14 is pushed forward (e.g., moving closer to the end of the outer needle tube 11), the pressure inside the sampling cylinder 10 decreases, the one-way valve 24 opens, and the air inside the sampling cylinder 10 is expelled through the one-way valve 24 as the piston 14 moves.

[0033] The working principle of this utility model is as follows:

[0034] During operation, the sharpened outer needle tube 11 is first connected to the sampling cylinder 10 via a Luer connector and inserted into the lung lesion area. In the initial state, the two closed split nuts 17 are threadedly connected to the threaded post 15 with external threads. Rotating the rotating block at the end of the threaded post 15 drives the piston 14 and the inner needle rod 12 to rotate forward. The spiral blades 13 on the outer side of the inner needle rod 12 spirally cut and entrain the lung cancer tissue sample, completing the sampling. After sampling, when the knob 23 is rotated in the opposite direction, the spring 2... Pushing the baffle 19 causes the limiting rod 18 to separate the split nut 17, making it easier to pull the threaded column 15; the inner needle rod 12 and the sample on the spiral blade 13 are pulled back into the sampling cylinder 10, and the rubber anti-slip texture on the outside of the knob 23 prevents slippage during operation; when the piston 14 is pulled back, a negative pressure is formed in the sampling cylinder 10, and the one-way valve 24 is closed, and the sample is drawn into the sampling cylinder 10 through the spiral blade 13. When the piston 14 moves forward, the one-way valve 24 opens and the air inside the sampling cylinder 10 is discharged.

[0035] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the art.

Claims

1. A rapid lung cancer tissue sample collection device, comprising a sampling tube (10), wherein an external needle tube (11) is provided at one end of the sampling tube (10), the external needle tube (11) is connected to the sampling tube (10) via a Luer connector to form a communication structure, and the end of the external needle tube (11) is sharpened, characterized in that: The outer needle tube (11) is provided with an inner needle rod (12). One end of the inner needle rod (12) extends from the inside of the outer needle tube (11) to the inside of the sampling cylinder (10). A spiral blade (13) is provided on the outside of the inner needle rod (12). A piston (14) is slidably connected inside the sampling cylinder (10). The inner needle rod (12) is fixedly connected to the piston (14). A threaded column (15) is fixed on the end of the piston (14) away from the inner needle rod (12). A fixing plate (16) is fixed on the end of the sampling cylinder (10) away from the outer needle tube (11). Two split nuts (17) are provided inside the fixing plate (16). The outer side of the threaded column (15) is provided with an external thread. The two split nuts (17) are provided with internal threads on the side that is close to each other. The internal threads and external threads are compatible. A threaded connection structure is formed between the threaded column (15) and the two split nuts (17).

2. The rapid lung cancer tissue sample collection device according to claim 1, characterized in that: Limiting rods (18) are fixed on both sides of the upper end of the two split nuts (17). The two limiting rods (18) extend into the interior of the fixing plate (16). A baffle (19) is fixed at the upper end of the two limiting rods (18), and the two baffles (19) and the fixing plate (16) are slidably connected.

3. The rapid lung cancer tissue sample collection device according to claim 1, characterized in that: A spring (20) is provided inside the fixing plate (16). The spring (20) is located outside the limiting rod (18). The end of the spring (20) away from the baffle (19) is fixedly connected to the fixing plate (16).

4. The rapid lung cancer tissue sample collection device according to claim 1, characterized in that: The upper ends of the two split nuts (17) are fixed with moving rods (21), the fixed plate (16) is internally threaded with a threaded rod (22), and the threaded rod (22) is located at the upper end of the moving rod (21). A knob (23) is fixed at the end of the threaded rod (22) away from the moving rod (21).

5. The rapid lung cancer tissue sample collection device according to claim 4, characterized in that: The knob (23) has anti-slip texture on its outer side, and the anti-slip texture is made of rubber.

6. The rapid lung cancer tissue sample collection device according to claim 1, characterized in that: A one-way valve (24) is fixed to the outside of the sampling tube (10).

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