Tumor sampling device convenient to separate

Abstract

The utility model discloses a tumor sampling device convenient to separate, which comprises a needle tube, a needle head is connected onto the needle tube, a rubber piston is slidably arranged in the needle tube, a square groove is arranged on the rubber piston, a square column is slidably arranged in the square groove in a sealed manner, and one end of the square column extending into the needle head is fixedly connected with a sealing plug matched with the needle head. The friction force between the sealing plug and the needle head is smaller than the friction force between the square column and the rubber piston, the other end of the square column is fixedly connected with a first push-pull plate, the needle tube is placed in the storage base, the side end of the storage base is fixedly connected with a fixing plate, a convex groove is formed in the fixing plate, and a convex strip is slidably arranged in the convex groove. The side end of the convex strip is fixedly connected with a limiting seat matched with the first push-pull plate, and the fixing plate is in threaded connection with a fixing screw matched with the convex strip, so that tissue bleeding, cell seepage or other tissue fluid are prevented from entering the needle head, the sampled fluid is prevented from being polluted easily, and sampling detection data are prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and more particularly to a tumor sampling device which is easy to separate. Background Art

[0002] A tumor is a new growth formed by the proliferation of localized tissue cells in response to various tumorigenic factors. Because these growths often appear as space-occupying, mass-like protrusions, they are also called neoplasms. In clinical practice, tumor sampling and testing are necessary to aid in clinical treatment and research.

[0003] In the process of sampling tumor cells, a needle-type liquid collector is usually used for sampling. When sampling, the needle is inserted into the tumor in the patient's body. In the process of inserting the needle into the patient's body, tissue bleeding, cell exudate or other tissue fluid will enter the inside of the needle. Tissue bleeding, cell exudate or other tissue fluid will mix with the sampled tumor fluid, affecting the data of the sampling test. In addition, after the sampling is completed, the needle is exposed to the outside, and the air will come into contact with the sampled liquid through the needle. The sampled liquid is easily contaminated, affecting the data of the sampling test. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the problems existing in the prior art, the present invention provides a tumor sampling device that is easy to separate, so as to solve the technical problem mentioned in the background art that the liquid after sampling is easily contaminated, which affects the data of the sampling detection.

[0006] (2) Technical solution

[0007] The cam is secured to the inner wall of the syringe and is adapted to engage the syringe needle, the cam being secured to the inner wall of the syringe and being capable of being inserted into the syringe needle into the syringe needle.

[0008] The utility model is further configured such that the side end of the storage seat is fixedly connected to a handle, the inside of the handle is slidably and rotatably connected to a round rod, one end of the round rod extending to the inside of the needle tube is fixedly connected to a first screw, the side end of the rubber piston is fixedly connected to a connecting plate, and the side end of the connecting plate is provided with a threaded hole adapted to the first screw, so as to facilitate pushing and pulling of the rubber piston.

[0009] The present invention is further configured such that a second push-pull plate is fixedly connected to the side end of the round rod, and the round rod can be pushed and pulled conveniently through the second push-pull plate.

[0010] The utility model is further configured such that a limiting ring is fixedly connected to one side of the outside of the round rod close to the first screw rod, which plays a limiting role and prevents the round rod from being drawn out from the inside of the handle.

[0011] The utility model is further configured such that a circular groove is provided at one end of the handle close to the storage seat, and the diameter of the circular groove is larger than the diameter of the limiting ring, so that the limiting ring and the first screw are easily inserted into the interior of the circular groove, thereby facilitating the taking and placing of the needle tube.

[0012] The utility model is further configured such that the inside of the needle tube is fixedly connected to a side plate, the storage seat is threadedly connected to a second screw that cooperates with the side plate, and the side end of the second screw is fixedly connected to a rotating column to facilitate replacement of the needle tube.

[0013] The present invention is further configured such that an ear block is fixedly connected to the handle, and the user's fingers can be clamped on the ear block to facilitate pushing and pulling the second push-pull plate.

[0014] The utility model is further configured such that an annular groove is provided on the outside of the sealing plug, and a sealing ring is sleeved on the inside of the annular groove to ensure the sealing between the sealing plug and the needle.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the present invention provides a tumor sampling device that is easy to separate and has the following beneficial effects:

[0017] 1. After sampling is completed, the square column is pushed by the first push-pull plate to move, and the square column drives the sealing plug to move toward the inside of the needle. The needle is sealed by the sealing plug to prevent air from passing through the needle and contacting the tumor liquid sampled inside the needle tube, thereby preventing the sampled liquid from being contaminated and affecting the sampling and detection data.

[0018] 2. When taking samples, by pushing the square column and the sealing plug, when the side end of the first push-pull plate contacts the side end of the needle tube, the side end of the sealing plug is flush with the side end of the needle, and then pull the convex strip to make the side end of the limit seat contact the side end of the first push-pull plate, and then tighten the fixing screws to fix the convex strip, and use the limit seat to limit the first push-pull plate, the square column and the sealing plug. When the needle is inserted into the patient's body, the sealing plug is prevented from being squeezed and moved toward the inside of the needle, and tissue bleeding, cell exudate or other tissue fluid is prevented from entering the inside of the needle with the sampled tumor fluid, and tissue bleeding, cell exudate or other tissue fluid is prevented from mixing with the sampled tumor fluid and the tumor fluid after sampling, thereby ensuring the accuracy of sampling data detection.

[0019] 3. Since the needle tube is placed inside the storage seat, after the sampling is completed, only the needle tube and the needle and other structures need to be disassembled and discarded, and there is no need to discard the storage seat and other structures, which facilitates the recycling of the storage seat and other structures and avoids waste of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the front structure of a tumor sampling device that is easy to separate in the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the needle tube, rubber piston, connecting plate and square column in the utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the needle tube, needle head and sealing plug in the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the connection between the rubber piston, square column, sealing plug and first push-pull plate in the utility model;

[0024] Figure 5 It is a schematic structural diagram of the connection between the storage seat, handle, first screw, fixing plate, convex strip and limit seat in the utility model.

[0025] In the figure: 1. needle tube; 2. needle; 3. rubber piston; 4. square groove; 5. square column; 6. sealing plug; 7. first push-pull plate; 8. storage seat; 9. fixing plate; 10. convex groove; 11. convex strip; 12. limit seat; 13. fixing screw; 14. handle; 15. round rod; 16. first screw; 17. connecting plate; 18. second push-pull plate; 19. limit ring; 20. round groove; 21. side plate; 22. second screw; 23. rotating column; 24. ear block; 25. ring groove; 26. sealing ring. DETAILED DESCRIPTION

[0026] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0028] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually relative to the directions shown in the drawings, or relative to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually relative to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned direction words are not used to limit the present invention.

[0029] See also Figure 1-5 A tumor sampling device that is easy to separate comprises a needle tube 1, a needle 2 is connected to the needle tube 1, a rubber piston 3 is slidingly provided inside the needle tube 1, a square groove 4 is provided on the rubber piston 3, a square column 5 is provided for sealing and sliding inside the square groove 4, the square column 5 and the rubber piston 3 are sealingly and slidingly matched, one end of the square column 5 extending to the inside of the needle 2 is fixedly connected to a sealing plug 6 that is adapted to the needle 2, an annular groove 25 is provided on the outside of the sealing plug 6, and a sealing ring 26 is sleeved inside the annular groove 25 to ensure the sealing between the sealing plug 6 and the needle 2, and the friction between the sealing plug 6 and the needle 2 is less than The friction between the square column 5 and the rubber piston 3 makes it easier for the rubber piston 3 to drive the square column 5 and the sealing plug 6 to move during the movement of the rubber piston 3 inside the needle tube 1. The other end of the square column 5 is fixedly connected to the first push-pull plate 7, and the needle tube 1 is placed inside the storage seat 8. The side end of the storage seat 8 is fixedly connected to the fixed plate 9, and a convex groove 10 is provided on the fixed plate 9. A convex strip 11 is slidingly provided inside the convex groove 10. The side end of the convex strip 11 is fixedly connected to a limit seat 12 that cooperates with the first push-pull plate 7, and a fixing screw 13 that cooperates with the convex strip 11 is threadedly connected to the fixed plate 9.

[0030] Specifically, after the sampling is completed, the square column 5 is pushed to move by the first push-pull plate 7, and the square column 5 drives the sealing plug 6 to move toward the inside of the needle 2, and the needle 2 is sealed by the sealing plug 6 to prevent air from coming into contact with the tumor liquid sampled inside the needle tube 1 through the needle 2, and to prevent the sampled liquid from being contaminated and affecting the data of the sampling test. When sampling, by pushing the square column 5 and the sealing plug 6, when the side end of the first push-pull plate 7 contacts the side end of the needle tube 1, the side end of the sealing plug 6 is flush with the side end of the needle 2, and then the convex strip 11 is pulled to make the side end of the limit seat 12 contact the side end of the first push-pull plate 7, and then the fixing screw 13 is tightened to fix the convex strip 11, and the limit seat 12 is fixed. The first push-pull plate 7, the square column 5 and the sealing plug 6 are limited. When the needle 2 is inserted into the patient's body, the sealing plug 6 is prevented from being squeezed and moved toward the inside of the needle 2, and tissue bleeding, cell exudate or other tissue fluid is prevented from entering the inside of the needle 2 with the sampled tumor fluid, and tissue bleeding, cell exudate or other tissue fluid is prevented from mixing with the sampled tumor fluid and the sampled tumor fluid, thereby ensuring the accuracy of the sampling data detection. Since the needle tube 1 is placed inside the storage seat 8, after the sampling is completed, only the needle tube 1 and the needle 2 and other structures need to be disassembled and discarded, and there is no need to discard the storage seat 8 and other structures, which facilitates the recycling of the storage seat 8 and other structures and avoids waste of materials.

[0031] See also Figure 1 、 Figure 2 and Figure 5 The side end of the storage seat 8 is fixedly connected to the handle 14, and the inside of the handle 14 is slidably and rotatably connected to the round rod 15. One end of the round rod 15 extending to the inside of the needle tube 1 is fixedly connected to the first screw 16, and the side end of the rubber piston 3 is fixedly connected to the connecting plate 17. The side end of the connecting plate 17 is provided with a threaded hole adapted to the first screw 16. The side end of the round rod 15 is fixedly connected to the second push-pull plate 18, and an ear block 24 is fixedly connected to the handle 14. The user's finger is stuck on the ear block 24 to facilitate pushing and pulling the second push-pull plate 18. The outside of the round rod 15 is fixedly connected to a limiting ring 19 near the first screw 16, which plays a limiting role to prevent the round rod 15 from being pulled out from the inside of the handle 14. A circular groove 20 is provided at one end of the handle 14 near the storage seat 8, and the diameter of the circular groove 20 is larger than the diameter of the limiting ring 19.

[0032] Specifically, when the needle tube 1 is placed inside the storage seat 8, the round rod 15 is pulled to move outward, and the limiting ring 19 and the first screw 16 are moved to the inside of the circular groove 20, and then the needle tube 1 is placed inside the storage seat 8, and then the round rod 15 is pushed to move inside the needle tube 1, so that the first screw 16 is inserted into the inside of the threaded hole, and then the round rod 15 and the first screw 16 are rotated so that the first screw 16 is screwed into the inside of the threaded hole. Since the pressure between the rubber piston 3 and the needle tube 1 is relatively large, there is a certain friction between the rubber piston 3 and the needle tube 1. When the first screw 16 is screwed into the inside of the threaded hole, the rubber piston 3 will not rotate with it, and the round rod 15 and the first screw 16 are pulled outward by the second push-pull plate 18, and the first screw 16 drives the rubber piston 3 to move outward.

[0033] The present invention is further configured such that a side plate 21 is fixedly connected to the interior of the needle tube 1 , a second screw 22 that cooperates with the side plate 21 is threadedly connected to the storage seat 8 , and a rotating column 23 is fixedly connected to the side end of the second screw 22 .

[0034] Specifically, after placing the needle tube 1 inside the storage slot, the rotating column 23 and the second screw 22 are rotated clockwise to make the second screw 22 press against the side plate 21, thereby fixing the needle tube 1 inside the storage seat 8. By rotating the second screw 22 counterclockwise, the side end of the second screw 22 is separated from the side plate 21, making it easy to take the needle tube 1 out of the storage seat 8, thereby facilitating the taking and placing of the needle tube 1.

[0035] In summary, when the overall equipment is in use:

[0036] When the needle tube 1 is placed inside the storage seat 8, the round rod 15 is pulled to move outward, and the limiting ring 19 and the first screw 16 are moved to the inside of the circular groove 20. Then the needle tube 1 is placed inside the storage seat 8 so that the needle head 2 is located on the upper side. Then the rotating column 23 and the second screw 22 are rotated clockwise so that the second screw 22 is pressed against the side plate 21 to fix the needle tube 1 inside the storage seat 8. Then the round rod 15 is pushed to move inside the needle tube 1 so that the first screw 16 is inserted into the inside of the threaded hole. Then the round rod 15 and the first screw 16 are rotated so that the first screw 16 is screwed into the inside of the threaded hole. Since the pressure between the rubber piston 3 and the needle tube 1 is relatively large, there is a certain friction between the rubber piston 3 and the needle tube 1. When the first screw 16 is screwed into the inside of the threaded hole, the rubber piston 3 will not rotate.

[0037] When tumor sampling is required, pull the convex strip 11 to make the side end of the limit seat 12 contact with the side end of the first push-pull plate 7, then tighten the fixing screw 13 to fix the convex strip 11, then insert the needle 2 into the position close to the tumor of the patient, and insert the needle 2 into the inside of the tumor, then loosen the fixing screw 13, then move the limit seat 12 to one side of the first push-pull plate 7, then tighten the fixing screw 13 to fix the convex strip 11 and the limit seat 12, then pull the first push-pull plate 7, the first push-pull plate 7 pulls the square column 5 and the sealing plug 6 to the side close to the rubber piston 3, and makes the side end of the sealing plug 6 contact with the side end of the rubber piston 3, then pull the second push-pull plate 7. Pull the plate 18, the second push-pull plate 18 pulls the round rod 15 and the first screw 16 to move outward, and the first screw 16 drives the rubber piston 3 to move outward, drawing the liquid inside the tumor into the inside of the needle tube 1. Since the friction between the square column 5 and the rubber piston 3 is greater than the friction between the sealing plug 6 and the needle 2, in the process of pulling the rubber piston 3 to move, the square column 5 and the sealing plug 6 move with the rubber piston 3. After the sampling is completed, push the first push-pull plate 7, and the first push-pull plate 7 pushes the square column 5 and the sealing plug 6 to move, so that the sealing plug 6 is inserted into the inside of the needle 2, and the side end of the first push-pull plate 7 contacts the side end of the needle tube 1, and the needle 2 is sealed through the sealing plug 6.

[0038] In all the schemes mentioned above, the connection between the two components can be selected according to actual conditions by welding, bolt and nut connection, bolt or screw connection or other well-known connection methods, which will not be listed here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the present invention have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tumor sampling device that facilitates separation, comprising a needle tube (1) connected to a needle head (2), characterized in that: The needle tube (1) is provided with a rubber piston (3) for sliding inside, a square groove (4) is provided on the rubber piston (3), a square column (5) is provided for sealing and sliding inside the square groove (4), one end of the square column (5) extending into the inside of the needle head (2) is fixedly connected to a sealing plug (6) adapted to the needle head (2), the friction force between the sealing plug (6) and the needle head (2) is smaller than the friction force between the square column (5) and the rubber piston (3), and the other end of the square column (5) is fixedly connected to a first push rod (6). The needle tube (1) is placed inside the storage seat (8), the side end of the storage seat (8) is fixedly connected with a fixed plate (9), a convex groove (10) is provided on the fixed plate (9), a convex strip (11) is slidably provided inside the convex groove (10), the side end of the convex strip (11) is fixedly connected with a limit seat (12) matched with the first push-pull plate (7), and a fixing screw (13) matched with the convex strip (11) is threadedly connected on the fixed plate (9).

2. The tumor sampling device according to claim 1, wherein: The side end of the storage seat (8) is fixedly connected to a handle (14), the inside of the handle (14) is slidably and rotatably connected to a round rod (15), one end of the round rod (15) extending into the inside of the needle tube (1) is fixedly connected to a first screw (16), and the side end of the rubber piston (3) is fixedly connected to a connecting plate (17), and the side end of the connecting plate (17) is provided with a threaded hole adapted to the first screw (16).

3. The tumor sampling device according to claim 2, wherein: The side end of the round rod (15) is fixedly connected to a second push-pull plate (18).

4. The tumor sampling device according to claim 2, wherein: A limiting ring (19) is fixedly connected to the outer side of the round rod (15) close to the first screw rod (16).

5. The tumor sampling device according to claim 4, characterized in that: A circular groove (20) is provided at one end of the handle (14) close to the storage seat (8), and the diameter of the circular groove (20) is larger than the diameter of the limiting ring (19).

6. The tumor sampling device according to claim 1, wherein: The inside of the needle tube (1) is fixedly connected to a side plate (21), the storage seat (8) is threadedly connected to a second screw (22) that cooperates with the side plate (21), and the side end of the second screw (22) is fixedly connected to a rotating column (23).

7. The tumor sampling device for easy separation according to claim 2, characterized in that: An ear block (24) is fixedly connected to the handle (14).

8. The tumor sampling device for easy separation according to claim 1, characterized in that: The outside of the sealing plug (6) is provided with an annular groove (25), and the inside of the annular groove (25) is sleeved with a sealing ring (26).

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