Centrum focus tissue sampling device

Abstract

The utility model discloses a centrum focus tissue sampling device which comprises an outer sleeve and an inner sleeve and further comprises an inner core sampling structure, the inner sleeve is clamped in the outer sleeve and can be disassembled and assembled, the inner core sampling structure is movably arranged in the inner sleeve, and the inner core sampling structure is connected with the outer sleeve. The inner core sampling structure is matched with the inner sleeve to rotate to sample focus tissues; the inner core sampling structure comprises an inner core rod, a sampling rod is arranged on one side of the inner core rod, a cone part is arranged at the end of the sampling rod, and a threaded tip is arranged on the sampling rod. By adopting the closed structure of the inner core sampling structure and the inner sleeve, the sampling of the focus tissue is facilitated, the focus tissue at the same part can be sampled for multiple times, the operation is convenient, and the replacement and sleeve connection are not needed.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a vertebral body lesion tissue sampling device. Background Technology

[0002] When diagnosing and treating unexplained lesions in the vertebral body of the spine, it is often necessary to obtain tissue samples from the lesion (tumor lesions, tissue from areas of bone destruction, etc.). This procedure is usually called a biopsy. Doctors perform pathological or microbiological examinations on the obtained samples to determine the nature of the lesion and formulate a treatment plan. This usually requires the use of a sampling device to collect tissue samples for testing.

[0003] A sampling device disclosed in utility model patent application CN216602933U includes: an outer tube, the outer tube including an active end inserted into the lesion tissue; and a first control end disposed opposite to the active end for controlling the movement of the active end; a sampling tube inserted into the outer tube; the sampling tube including a sampling end located inside the active end of the outer tube; and a second control end opposite to the sampling end for controlling the movement of the sampling end; an auxiliary knife located inside the sampling tube; the auxiliary knife including a handle; and a blade head extending from one end of the handle in an axial direction away from the handle; the blade head is located inside the sampling end of the sampling tube for separating the lesion tissue inside the sampling end from the patient's internal tissue. This method can separate the lesion tissue obtained from the sampling end from the tissue in the patient's body, leaving the lesion tissue in the sampling tube; the lesion tissue can be obtained by pulling out the sampling tube. However, the above technical solution has the following shortcomings: the above technical solution uses an auxiliary knife to cut the lesion tissue individually, which cannot cut the lesion tissue quickly, resulting in low sampling efficiency. At the same time, it cannot continuously sample the lesion at the same location, and some lesion tissue or soft tissue lesions cannot be cut and removed. Therefore, we propose a vertebral body lesion tissue sampling device. Utility Model Content

[0004] The purpose of this utility model is to provide a vertebral body lesion tissue sampling device to solve the problems mentioned in the background art. The current sampling device uses an auxiliary blade to make a single cut on the lesion tissue, which cannot quickly cut the lesion tissue, resulting in low sampling efficiency. At the same time, it cannot continuously sample the lesion at the same location, and there are also problems such as some lesion tissue not being able to be removed or soft tissue lesions not being able to be cut and removed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a vertebral body lesion tissue sampling device, including an outer sleeve and an inner sleeve, and an inner core sampling structure. The inner sleeve is snapped into the outer sleeve and can be disassembled. The inner core sampling structure is movably disposed in the inner sleeve. The inner core sampling structure and the inner sleeve rotate together to sample the lesion tissue.

[0006] The inner core sampling structure includes an inner core rod, a sampling rod is provided on one side of the inner core rod, a cone-shaped part is provided at the end of the sampling rod, and a threaded tip is provided on the sampling rod.

[0007] Preferably, the inner sleeve has positioning blocks on both sides of its outer surface, which are engaged in positioning slots. The positioning slots are located on both sides of the inner wall of the threaded sleeve, enabling the inner sleeve and outer sleeve to be engaged and positioned.

[0008] Preferably, the threaded sleeve is rotatably disposed within the threaded groove, which is disposed on the inner wall of the outer sleeve, so that the inner sleeve can be rotated and moved by the rotation of the threaded sleeve.

[0009] Preferably, a magnet is provided in the positioning slot, which is used to attract the positioning block, thereby improving the firmness of the positioning block's engagement and fixation.

[0010] Preferably, the bottom of the inner tube is provided with an annular cutter, which is arranged at an angle of 45°-60° with the bottom of the inner tube, enabling secondary cutting of the lesion tissue.

[0011] Preferably, the outer surface of the vertebral body is provided with a rotating thread to facilitate the movement of the vertebral body within the lesion tissue and to cut the lesion tissue.

[0012] Preferably, the inner core rod is provided with scale markings to locate the moving position of the inner core rod.

[0013] Preferably, the inner core rod has a diameter of 3.5 mm and is a solid structure.

[0014] Preferably, the outer diameter of the inner sleeve is 4 mm and the inner diameter of the inner sleeve is 3.5 mm.

[0015] Preferably, the inner diameter of the outer sleeve is 4mm, and both the outer sleeve and the inner sleeve are hollow structures.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) This utility model can quickly cut the lesion by rotating the inner core sampling structure. It can also enter hard or soft lesion tissue. Then, by rotating the inner tube, the lesion tissue is cut a second time by the ring cutter. By adopting the closed structure of the inner core sampling structure and the inner tube, it is beneficial to sample the lesion tissue. All the lesion tissue that can be sampled can be taken out.

[0018] (2) This utility model can take multiple samples of lesion tissue in the same location, which is convenient to operate and does not require changing the sleeve. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the split structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the inner sleeve in this utility model;

[0021] Figure 3 This is a schematic diagram of the core sampling structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the main structure of the core sampling structure in this utility model;

[0023] Figure 5 This is a half-sectional structural diagram of the inner sleeve and outer sleeve during assembly in this utility model;

[0024] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0025] Figure 7 This is a half-sectional view of the inner sleeve, inner core sampling structure and outer sleeve assembly in this utility model.

[0026] Figure 8 This is a half-section structural diagram of the present invention in the sampling state;

[0027] Figure 9 This is a half-section structural diagram of the present invention in the sample removal state;

[0028] In the diagram: 1. Outer sleeve; 2. Inner sleeve; 3. Inner core rod; 11. Main handle; 12. Positioning slot; 13. Magnet block; 14. Threaded sleeve; 15. Threaded groove; 21. Positioning block; 22. Secondary handle; 23. Circular cutter; 31. Knob; 32. Scale marking; 33. Thread tip; 34. Conical body; 35. Sampling rod. Detailed Implementation

[0029] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-9This utility model provides a technical solution: a vertebral body lesion tissue sampling device, including an outer sleeve 1 and an inner sleeve 2. The outer sleeve 1 is provided with a main handle 11 for easy gripping, and the inner sleeve 2 is provided with a secondary handle 22 for easy rotation. The outer diameter of the inner sleeve 2 is 4mm, the inner diameter of the inner sleeve 2 is 3.5mm, and the inner diameter of the outer sleeve 1 is 4mm. Both the outer sleeve 1 and the inner sleeve 2 are hollow structures, and an inner core sampling structure is also included. The inner sleeve 2 is snapped into the outer sleeve 1 and can be disassembled. The inner core sampling structure is movably disposed in the inner sleeve 2. The inner core sampling structure and the inner sleeve 2 cooperate to rotate and sample the lesion tissue.

[0031] Please see Figure 3 The inner core sampling structure includes an inner core rod 3, with a knob 31 at the other end for easy control of the movement and rotation of the inner core rod 3. A sampling rod 35 is provided on one side of the inner core rod 3, with a vertebral body 34 at the end of the sampling rod 35. A threaded tip 33 is provided on the sampling rod 35, with the diameter of the threaded tip 33 being the same as the inner diameter of the outer sleeve 1. The diameter of the inner core rod 3 is 3.5 mm. The inner core rod 3 is a solid structure. During the sampling process, the rotation of the inner core rod 3 will simultaneously drive the vertebral body 34 and the sampling rod 35 to rotate, thereby cutting the lesion tissue through the vertebral body 34 and the threaded tip 33.

[0032] Furthermore, a rotating thread is provided on the outer surface of the vertebral body 34 to facilitate the movement of the vertebral body 34 within the lesion tissue, while also enabling the cutting of the lesion tissue.

[0033] Please see Figure 4 Furthermore, the inner core rod 3 is provided with scale markings 32, and the length of L0 is 1.5cm-2cm, which can locate the moving position of the inner core rod 3.

[0034] Please see Figure 5 and Figure 6 The inner sleeve 2 has positioning blocks 21 on both sides of its outer surface. The positioning blocks 21 are engaged in the positioning slots 12. The positioning slots 12 are set on both sides of the inner wall of the threaded sleeve 14. When the inner sleeve 2 and the outer sleeve 1 are assembled, the inner sleeve 2 is inserted into the outer sleeve 1 and the positioning blocks 21 are engaged in the positioning slots 12, so that the inner sleeve 2 and the outer sleeve 1 can be engaged and positioned.

[0035] The threaded sleeve 14 is rotatably disposed within the threaded groove 15, which is disposed on the inner wall of the outer sleeve 1. The inner sleeve 2 can be rotated and moved by the rotation of the threaded sleeve 14.

[0036] Furthermore, a magnet 13 is provided in the positioning slot 12. The magnet 13 is used to attract the positioning block 21. When the positioning block 21 is inserted into the positioning slot 12, the magnet 13 attracts and connects the positioning block 21, which improves the firmness of the positioning block 21.

[0037] As a specific embodiment of this application, an annular cutter 23 is provided at the bottom of the inner tube 2. The annular cutter 23 is arranged at an angle of 45°-60° with the bottom of the inner tube 2. When the inner tube 2 rotates, the annular cutter 23 can be rotated. Through the rotation of the annular cutter 23, the lesion tissue can be cut a second time.

[0038] Working principle and usage process of this utility model:

[0039] First, insert the inner sleeve 2 into the outer sleeve 1, and insert the positioning block 21 into the positioning slot 12. Push the device into the sampling position of the vertebral body, rotate and push the knob 31. The knob 31 drives the inner core rod 3 to rotate and move. The rotation and movement of the inner core rod 3 drives the sampling rod 35 and the vertebral body part 34 to rotate and move. The rotation and movement of the vertebral body part 34 allows it to enter the lesion tissue and simultaneously perform preliminary cutting of the lesion tissue. The rotation of the sampling rod 35 drives the threaded tip 33 to rotate. The threaded tip 33 cuts the lesion tissue and collects the lesion tissue in the groove of the threaded tip 33. Then rotate the inner sleeve 2. The cannula 2 drives the threaded sleeve 14 to rotate via the positioning block 21. The threaded sleeve 14 rotates along the threaded groove 15 and moves downward. The downward movement of the threaded sleeve 14 drives the inner cannula 2 to rotate and move downward. The inner cannula 2 drives the annular cutter 23 to rotate and move. The annular cutter 23 cuts the lesion tissue again. As the inner cannula 2 moves, the sampling rod 35 and the threaded tip 33 on the inner core rod 3 retract into the inner cannula 2, and the inner core rod 3 and the inner cannula 2 form a combined cavity, thereby collecting the lesion tissue. Then, the inner cannula 2 and the inner core rod 3 are taken out from the outer cannula 1 to complete the sampling of the lesion tissue.

[0040] When it is necessary to sample the same location, insert the inner sleeve 2 and the inner core rod 3 into the outer sleeve 1, and repeat the above operation to complete multiple samplings at the same location without changing the kit. The multiple sampling operation is convenient.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A vertebral body lesion tissue sampling device, comprising an outer sleeve (1) and an inner sleeve (2), characterized in that: It also includes an inner core sampling structure, wherein the inner sleeve (2) is snapped into the outer sleeve (1), and the inner sleeve (2) can be disassembled and assembled. The inner core sampling structure is movably set in the inner sleeve (2). The inner core sampling structure and the inner sleeve (2) cooperate to rotate and sample the lesion tissue. The inner core sampling structure includes an inner core rod (3), a sampling rod (35) is provided on one side of the inner core rod (3), a cone part (34) is provided at the end of the sampling rod (35), and a threaded tip (33) is provided on the sampling rod (35).

2. The vertebral body lesion tissue sampling device according to claim 1, characterized in that: The inner sleeve (2) has positioning blocks (21) on both sides of its outer surface. The positioning blocks (21) are engaged in the positioning slots (12), which are located on both sides of the inner wall of the threaded sleeve (14).

3. The vertebral body lesion tissue sampling device according to claim 2, characterized in that: The threaded sleeve (14) is rotatably disposed in the threaded groove (15), which is disposed on the inner wall of the outer sleeve (1).

4. The vertebral body lesion tissue sampling device according to claim 2, characterized in that: A magnet (13) is provided in the positioning slot (12), and the magnet (13) is used to attract the positioning block (21).

5. A vertebral body lesion tissue sampling device according to claim 1 or 2, characterized in that: The bottom of the inner sleeve (2) is provided with an annular cutter (23), which is arranged at an angle of 45°-60° with the bottom of the inner sleeve (2).

6. The vertebral body lesion tissue sampling device according to claim 1, characterized in that: Rotary threads are provided on the outer surface of the vertebral body (34).

7. The vertebral body lesion tissue sampling device according to claim 1, characterized in that: The inner core rod (3) is provided with scale markings (32).

8. The vertebral body lesion tissue sampling device according to claim 7, characterized in that: The inner core rod (3) has a diameter of 3.5 mm and is a solid structure.

9. A vertebral body lesion tissue sampling device according to claim 1, characterized in that: The outer diameter of the inner sleeve (2) is 4 mm, and the inner diameter of the inner sleeve (2) is 3.5 mm.

10. A vertebral body lesion tissue sampling device according to claim 1, characterized in that: The inner diameter of the outer sleeve (1) is 4mm, and both the outer sleeve (1) and the inner sleeve (2) are hollow structures.

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