Lung tumor sampling device

Abstract

The utility model discloses a lung tumor sampling device, which belongs to the technical field of medical instruments and comprises an extraction tube used for extracting tumor tissue liquid, an input end of the extraction tube is provided with a suction needle head, a piston is connected in the extraction tube in a sliding mode, the upper end of the piston is connected with a push-pull rod, and the push-pull rod is connected with the suction needle head. The tumor tissue solid sampling device comprises an extraction tube and a suction needle head, the extraction tube is used for extracting tumor tissue solid, the sampling piece is used for extracting tumor tissue solid, the sampling piece, the extraction tube and the suction needle head are coaxially arranged, and the sampling piece comprises a connecting rod and a sampling needle connected with the end of the connecting rod. And more comprehensive and deep tumor information can be provided, so that the diagnosis accuracy can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical appliances, in particular to a lung tumor sampling device. Background Art

[0002] Lung cancer biopsy is generally performed through bronchoscopy, thoracoscopic sampling, thoracotomy and other methods. Lung cancer is a tumor that originates from the bronchial mucosal epithelium and is also a common malignant tumor in the lungs. Unlike tumors in other parts of the body, the lungs are softer in texture and constantly expand and contract under respiratory movement. Lung sampling requires higher technology and stability to avoid sampling errors or patient discomfort caused by respiratory movement. Since tumors are highly heterogeneous diseases, their solid and liquid tissues may contain different biomarkers. Therefore, when sampling tumor tissue, in order to improve detection accuracy, it is usually necessary to take both solid and liquid tissue samples.

[0003] Current tumor sampling equipment includes biopsy needles or injection syringes. Biopsy needles can only sample solid tumor tissue, while injection syringes may only sample liquid tumor tissue. The sampling method is relatively simple. If liquid tissue and solid tissue are to be sampled at the same time, secondary puncture and other operations may be required. This not only increases the patient's pain, but secondary puncture sampling may also increase the chance of complications such as infection. Utility Model Content

[0004] The embodiment of the utility model provides a lung tumor sampling device to solve the above-mentioned technical problems.

[0005] The embodiment of the utility model adopts the following technical scheme: it includes an extraction tube for extracting tumor tissue liquid, the input end of the extraction tube is provided with a suction needle, the interior of the extraction tube is slidably connected with a piston, the upper end of the piston is connected with a push-pull rod, and a sampling piece for extracting solid tumor tissue, the sampling piece is coaxially arranged with the extraction tube and the suction needle, the sampling piece includes a connecting rod and a sampling needle connected to the end of the connecting rod, the connecting rod passes through the piston and is sealingly and slidably connected to the piston, a needle groove is provided at one end of the sampling needle close to the suction needle, and a cutter is provided at one end of the needle groove close to its tip. After the tumor tissue liquid is extracted through the extraction tube, the tumor tissue solid machine is sampled by pulling the sampling piece through the cutter, which can provide more comprehensive and in-depth tumor information and help improve the accuracy of diagnosis.

[0006] Furthermore, a delivery tube is provided at the bottom end of the extraction tube, and a sampling bottle is threadedly connected to the output end of the delivery tube. A valve is provided on the delivery tube. When the valve is opened, the tumor tissue liquid extracted in the extraction tube can enter the sampling bottle.

[0007] Furthermore, a plurality of leakage holes are provided inside the needle groove to prevent tumor tissue fluid from being retained in the needle groove.

[0008] Furthermore, a baffle is provided on the circumferential inner wall of the suction needle, and the baffle is opposite to the blade of the cutter. When the cutter and the baffle collide with each other, the tumor tissue is fixed and cut off.

[0009] Furthermore, a positioning seat is threadedly connected to the connecting rod, and the positioning seat is located outside the extraction tube. The position of the positioning seat on the connecting rod is adjusted to position the sampling piece in the suction needle to prevent the sampling needle from leaking out of the suction needle.

[0010] Furthermore, a guide slot is provided on the circumferential inner wall of the extraction tube, and a guide rod slidably connected to the guide slot is provided on the outer wall of the connecting rod to limit and guide the sampling member.

[0011] At least one of the above technical solutions adopted in the embodiment of the utility model can achieve the following beneficial effects:

[0012] In the utility model, the suction needle is inserted into the tumor, and then the tumor tissue liquid is sucked through the upward movement of the piston, and the valve is opened to allow the sampled liquid to enter the sampling bottle, thereby completing the sampling of the tumor tissue liquid, and then the sampling needle is driven by the connecting rod to leak out of the suction needle and penetrate into the tumor, and the sampling needle is driven into the suction needle again, so that the cutter contacts the baffle plate, and the tumor tissue solid is cut off so that it exists in the needle groove, thereby completing the sampling of the tumor tissue solid. Through one puncture, tumor tissue solid and liquid samples can be collected, which can provide more comprehensive and in-depth tumor information and help improve the accuracy of diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2 The cross-sectional structure of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 3 The cross-sectional structure of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 4 For the utility model Figure 3 A schematic diagram of the structure enlargement in the middle;

[0018] Figure 5 It is a partial structural schematic diagram of the sampling needle in the utility model;

[0019] Figure 6 It is a three-dimensional structural schematic diagram of the sampling piece in the utility model.

[0020] Reference numerals

[0021] Extraction tube 1, suction needle 11, piston 12, push-pull rod 13, sampling piece 2, connecting rod 21, sampling needle 22, needle groove 23, cutter 24, delivery tube 3, sampling bottle 31, valve 32, leak hole 4, baffle 5, positioning seat 6, guide slide groove 7, guide rod 71. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0024] The utility model provides a lung tumor sampling device, including an extraction tube 1 for extracting tumor tissue liquid and a sampling piece 2 for extracting tumor tissue solid. The input end of the extraction tube 1 is provided with a suction needle 11, and a piston 12 is slidably connected inside the extraction tube 1. The upper end of the piston 12 is connected to a push-pull rod 13. When sampling, the exact position of the tumor can be determined with the help of imaging technology (such as ultrasound, CT or MRI), so as to guide the suction needle 11 to be accurately inserted into the tumor. By pulling the push-pull rod 13, the piston 12 is driven to move inside the extraction tube 1, so that negative pressure is generated in the extraction tube 1, and the tumor tissue liquid is sucked into the suction tube. The sampling piece 2 includes a connecting rod 21 and a sampling needle 22 connected to the end of the connecting rod 21. The connecting rod 21 passes through the piston 12 and is sealed and slidably connected to the piston 12. A needle groove 23 is opened at one end of the sampling needle 22 close to the suction needle 11, and the needle groove 23 is close to the suction needle 11. A cutter 24 is provided at one end of its tip, which pushes the connecting rod 21 to drive the sampling needle 22 to move out of the suction needle 11 and insert the sampling needle 22 into the tumor tissue. When the sampling needle 22 is driven to reset and move into the suction needle 11, the solid tumor tissue is cut off by the blade of the cutter 24, and the cut tumor tissue is fixed in the needle groove 23, so as to sample the solid tumor tissue and the liquid tumor tissue, provide more comprehensive and in-depth tumor information, and help improve the accuracy of diagnosis. At the same time, only one puncture through the suction needle 11 is required to complete the sampling of the solid tumor tissue and the liquid tumor tissue, reducing the pain of the patient. The sampling piece 2 is coaxially arranged with the extraction tube 1 and the suction needle 11. When the sampling needle 22 is reset to the suction needle 11, it is always located in the suction needle 11, avoiding the contact between the tumor tissue and other normal tissues and reducing the risk of tumor infection and metastasis.

[0025] Preferably, a delivery tube 3 is provided at the bottom end of the extraction tube 1, and the output end of the delivery tube 3 is threadedly connected to a sampling bottle 31, and a valve 32 is provided on the delivery tube 3. When the valve 32 is opened, the tumor tissue fluid extracted by the extraction tube 1 will enter the sampling bottle 31 through the delivery tube 3, and then the valve 32 will be closed to avoid leakage of the tumor tissue fluid.

[0026] Preferably, when extracting liquid from tumor tissue, the liquid that enters the extraction tube 1 through the suction needle 11 may enter the needle groove 23. A plurality of leakage holes 4 are opened inside the needle groove 23, and the liquid that enters the needle groove 23 will flow out through the leakage holes 4, thereby reducing liquid residue.

[0027] Preferably, a baffle 5 is provided on the circumferential inner wall of the suction needle 11, and the baffle 5 is opposite to the blade of the cutter 24. When the sampling needle 22 is reset to the inside of the suction needle 11 and the cutter 24 conflicts with the baffle 5, the tumor tissue solid is cut off by the cutter 24 to avoid adhesion of the sampled tumor tissue solid.

[0028] Preferably, a positioning seat 6 is threadedly connected to the connecting rod 21, and the positioning seat 6 is located outside the extraction tube 1. First, the positioning seat 6 is rotated so that the lower end of the positioning seat 6 contacts the upper end surface of the extraction tube 1, thereby limiting the downward movement distance of the connecting rod 21 to prevent the sampling needle 22 from leaking out of the suction needle 11 when sampling tumor tissue liquid or the suction needle 11 punctures into the tumor. When it is necessary to sample tumor solids through the sampling needle 22, the positioning seat 6 is moved to the upper end of the connecting rod 21, so that the connecting rod 21 extends to a deeper position in the extraction tube 1, which facilitates the sampling needle 22 to leak out of the suction needle 11.

[0029] Preferably, in order to prevent the tumor tissue and solid matter in the needle groove 23 from falling during the sampling process, a guide groove 7 is provided on the circumferential inner wall of the extraction tube 1, and a guide rod 71 slidably connected to the guide groove 7 is provided on the outer wall of the connecting rod 21. When the connecting rod 21 drives the sampling needle 22 to slide in the suction needle head 11, the opening end of the needle groove 23 is upward for sampling. By sliding the guide rod 71 in the guide groove 7, the connecting rod 21 is guided to prevent the sampling needle 22 from flipping over, so that the opening direction of the needle groove 23 is downward, causing the tumor tissue solid matter to fall, affecting the sampling operation.

[0030] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A lung tumor sampling device, characterized in that: include; An extraction tube (1) for extracting tumor tissue fluid, wherein the input end of the extraction tube (1) is provided with a suction needle (11), the interior of the extraction tube (1) is slidably connected to a piston (12), and the upper end of the piston (12) is connected to a push-pull rod (13); A sampling piece (2) for extracting solid tumor tissue, the sampling piece (2) being coaxially arranged with an extraction tube (1) and an aspiration needle (11), the sampling piece (2) comprising a connecting rod (21) and a sampling needle (22) connected to the end of the connecting rod (21), the connecting rod (21) passing through a piston (12) and being sealingly slidably connected to the piston (12), a needle groove (23) being provided at one end of the sampling needle (22) close to the aspiration needle (11), and a cutter (24) being provided at one end of the needle groove (23) close to its tip.

2. A lung tumor sampling device according to claim 1, characterized in that: A delivery pipe (3) is provided at the bottom end of the extraction pipe (1), a sampling bottle (31) is threadedly connected to the output end of the delivery pipe (3), and a valve (32) is provided on the delivery pipe (3).

3. A lung tumor sampling device according to claim 1, characterized in that: A plurality of leakage holes (4) are provided inside the needle groove (23).

4. A lung tumor sampling device according to claim 1, characterized in that: A baffle plate (5) is provided on the circumferential inner wall of the suction needle (11), and the baffle plate (5) is opposite to the blade portion of the cutter (24).

5. A lung tumor sampling device according to claim 1, characterized in that: A positioning seat (6) is threadedly connected to the connecting rod (21), and the positioning seat (6) is located outside the extraction tube (1).

6. A lung tumor sampling device according to claim 1, characterized in that: A guide slot (7) is provided on the circumferential inner wall of the extraction tube (1), and a guide rod (71) slidably connected to the guide slot (7) is provided on the upper outer wall of the connecting rod (21).

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