Spiral biopsy needle

Abstract

The utility model belongs to the technical field of biopsy needles, and particularly relates to a spiral biopsy needle which comprises a biopsy needle body, the biopsy needle body comprises a shell, an ejection mechanism is installed on the inner wall of the shell, the ejection mechanism comprises a connecting rod, one end of the connecting rod is fixedly connected with the inner wall of the shell, and the tail end of the connecting rod is fixedly connected with a spring. The tail end of the spring is fixedly connected with a first electromagnet, a power mechanism is installed on the inner wall of the shell and comprises a second electric telescopic rod, one end of the second electric telescopic rod is fixedly connected with the inner wall of the shell, and the tail end of the second electric telescopic rod is fixedly connected with a second electromagnet. The lower surface of the second electromagnet is attached to the upper surface of the first electromagnet, a connecting mechanism is installed on the inner wall of the shell, and a fixing mechanism is installed in the connecting mechanism. The biopsy forceps are convenient for biopsy operation.

Description

Technical Field

[0001] This invention belongs to the field of biopsy needle technology, specifically a spiral biopsy needle. Background Technology

[0002] Biopsy needles can be used to take biopsy samples from various organs such as the breast, thyroid, prostate, and pancreas. The sampled tissue can be examined in detail to determine whether there are tumor lesions, providing a basis for further treatment of the disease. The target site is identified by imaging technology such as CT and color Doppler ultrasound. The biopsy needle is inserted into the target site through a guide needle to obtain a tissue sample, and then the biopsy needle is quickly withdrawn.

[0003] When using existing biopsy needles, staff need to forcefully insert them into the patient's body. For patients with thick subcutaneous fat, the insertion requires considerable force and is prone to deviation, making the operation inconvenient. Summary of the Invention

[0004] The purpose of this invention is to provide a spiral biopsy needle that facilitates biopsy procedures.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A spiral biopsy needle is provided, comprising a biopsy needle body, the biopsy needle body including a shell, an ejection mechanism installed on the inner wall of the shell, the ejection mechanism including a connecting rod, one end of the connecting rod being fixedly connected to the inner wall of the shell, a spring being fixedly connected to the end of the connecting rod, a first electromagnet being fixedly connected to the end of the spring, a power mechanism installed on the inner wall of the shell, the power mechanism including a second electric telescopic rod, one end of the second electric telescopic rod being fixedly connected to the inner wall of the shell, a second electromagnet being fixedly connected to the end of the second electric telescopic rod, the lower surface of the second electromagnet being in contact with the upper surface of the first electromagnet, a connecting mechanism installed on the inner wall of the shell, and a fixing mechanism installed inside the connecting mechanism.

[0006] Optionally, the connecting mechanism includes a guide rod, the bottom of which is fixedly connected to the inner wall of the housing, a limiting rod is movably connected to the surface of the guide rod, a first connecting ring is fixedly connected to the surface of the limiting rod, and a pad is fixedly connected to the inner wall of the housing, the pad being located below the limiting rod.

[0007] Optionally, the fixing mechanism includes a sleeve needle, the surface of which is fixedly connected to the surface of the first connecting ring. The surface of the outer shell has a through hole, the sleeve needle is located inside the through hole, a fixing block is fixedly connected to the inner wall of the sleeve needle, and a cutting blade is movably connected inside the fixing block.

[0008] Optionally, a lifting mechanism is installed on the inner wall of the housing. The lifting mechanism includes a first electric telescopic rod, one end of which is movably connected to the inner wall of the housing. A fixing ring is fixedly connected to the inner wall of the housing, and the first electric telescopic rod is located inside the fixing ring. A threaded groove is formed on the inner wall of the fixing ring.

[0009] Optionally, a connecting block is fixedly connected to the end of the first electric telescopic rod, and a first protrusion is fixedly connected to the surface of the connecting block, the surface of the first protrusion being in contact with the inner wall of the threaded groove.

[0010] Optionally, a sampling mechanism is installed on the lower surface of the connecting block. The sampling mechanism includes a sampling needle, one end of which is fixedly connected to the lower surface of the connecting block. A spiral blade is fixedly connected to the surface of the sampling needle, and a second protrusion is fixedly connected to the surface of the sampling needle.

[0011] Optionally, a rotating ring is fixedly connected to the lower surface of the housing, the inner wall of the rotating ring is threadedly connected to the surface of the pin, a second connecting ring is installed on the lower surface of the rotating ring, a battery is fixedly connected to the inner wall of the housing, a first groove is formed on the surface of the housing, and a control component is fixedly connected to the inner wall of the first groove.

[0012] Compared with the prior art, this utility model has the following beneficial effects:

[0013] This invention comprises a first electromagnet, a second electromagnet, and a second electrically operated telescopic rod. In use, the tip of the needle is first aligned with the area on the patient requiring biopsy, and then gently pressed downwards, causing the needle to move inwards. The first connecting ring drives the limiting rod upwards. Then, the second and first electromagnets are energized, connecting them. The second electrically operated telescopic rod is then activated, retracting and causing the second electromagnet to move the first electromagnet upwards, compressing the spring. When the second electromagnet reaches the appropriate position, the power to both electromagnets is de-energized, the magnetism disappears, and the force stored in the spring pushes the first electromagnet to quickly strike the surface of the limiting rod, pushing the needle downwards and allowing it to quickly penetrate the patient's body. This invention utilizes the spring's rebound to cause the first electromagnet to strike the surface of the limiting rod, providing a large instantaneous force to the needle, facilitating the biopsy procedure.

[0014] This utility model is equipped with a fixing ring, a first electric telescopic rod, and a first protrusion. In use, the needle is first inserted into the area of ​​the patient to be biopsied, and then the first electric telescopic rod is activated. The first electric telescopic rod extends and drives the connecting block to move downward. Since the first protrusion moves in the threaded groove, the connecting block rotates while descending. That is, the sampling needle descends and rotates at the same time, so that the spiral blade cuts the tissue, thereby facilitating tissue sampling. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0018] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0019] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B;

[0020] Figure 5 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 6 This utility model Figure 5 A magnified structural diagram at point C.

[0022] In the diagram: 1. Biopsy needle body; 101. Outer shell; 102. Through hole; 103. First groove; 104. Control component; 105. Battery; 2. Lifting mechanism; 201. First electric telescopic rod; 202. Fixing ring; 203. Threaded groove; 204. Connecting block; 205. First protrusion; 3. Sampling mechanism; 301. Sampling needle; 302. Spiral blade; 303. Second protrusion; 4. Ejection mechanism; 401. Connecting rod; 402. Spring; 403. First electromagnet; 5. Power mechanism; 501. Second electric telescopic rod; 502. Second electromagnet; 6. Connecting mechanism; 601. First connecting ring; 602. Limiting rod; 603. Guide rod; 604. Pad; 7. Fixing mechanism; 701. Needle sleeve; 702. Fixing block; 703. Cutting blade; 704. Rotating ring; 705. Second connecting ring. Detailed Implementation

[0023] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0025] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] Reference Figure 1-6The present invention provides a description of a spiral biopsy needle according to an embodiment. A spiral biopsy needle includes a biopsy needle body 1, which includes a housing 101. An ejection mechanism 4 is installed on the inner wall of the housing 101. The ejection mechanism 4 includes a connecting rod 401, one end of which is fixedly connected to the inner wall of the housing 101, and a spring 402 is fixedly connected to the end of the connecting rod 401. A first electromagnet 403 is fixedly connected to the end of the spring 402. A power mechanism 5 is installed on the inner wall of the housing 101, including a second electric telescopic rod 501. One end of the second electric telescopic rod 501 is fixedly connected to the inner wall of the housing 101, and a second electromagnet 502 is fixedly connected to the end of the second electric telescopic rod 501. The lower surface of the second electromagnet 502 is in contact with the upper surface of the first electromagnet 403, providing... When the second electromagnet 502 and the first electromagnet 403 are energized, the second electromagnet 502 is connected to the first electromagnet 403. At this time, the second electric telescopic rod 501 is activated and retracts, causing the second electromagnet 502 to drive the first electromagnet 403 to move upward, compressing the spring 402. When the second electromagnet 502 moves to the appropriate position, the second electromagnet 502 and the first electromagnet 403 are de-energized, the magnetism disappears, and the force stored in the spring 402 pushes the first electromagnet 403 to quickly strike the surface of the limiting rod 602, pushing the needle 701 downward, so that the present invention can be quickly inserted into the patient's body. The inner wall of the outer shell 101 is equipped with a connecting mechanism 6, and the inside of the connecting mechanism 6 is equipped with a fixing mechanism 7.

[0028] The connecting mechanism 6 includes a guide rod 603, the bottom of which is fixedly connected to the inner wall of the housing 101. A limiting rod 602 is movably connected to the surface of the guide rod 603. A first connecting ring 601 is fixedly connected to the surface of the limiting rod 602. A pad 604 is fixedly connected to the inner wall of the housing 101, and the pad 604 is located below the limiting rod 602. The limiting rod 602 can transmit the impact force from the first electromagnet 403 to the needle 701, causing it to move downward and pierce the biopsy site. The fixing mechanism 7 includes a needle 701, the surface of which is connected to the first electromagnet 403. The connecting ring 601 is fixedly connected to the surface. The outer shell 101 has a through hole 102 on its surface. The sleeve needle 701 is located inside the through hole 102. The inner wall of the sleeve needle 701 is fixedly connected to a fixing block 702. The cutting blade 703 is movably connected inside the fixing block 702. When the sampling needle 301 descends, the cutting blade 703 is rotated away from the sampling needle 301 by the pressure of the sampling needle 301. When the sampling needle 301 retracts, that is, after sampling is completed, the cutting blade 703 springs back and fits against the surface of the spiral blade 302, cutting off the remaining uncut tissue.

[0029] A lifting mechanism 2 is installed on the inner wall of the outer casing 101. The lifting mechanism 2 includes a first electric telescopic rod 201. One end of the first electric telescopic rod 201 is movably connected to the inner wall of the outer casing 101. A fixing ring 202 is fixedly connected to the inner wall of the outer casing 101. The first electric telescopic rod 201 is located inside the fixing ring 202. A threaded groove 203 is formed on the inner wall of the fixing ring 202. A connecting block 204 is fixedly connected to the end of the first electric telescopic rod 201. A first protrusion 205 is fixedly connected to the surface of the connecting block 204. The surface of the first protrusion 205 fits against the inner wall of the threaded groove 203. When the first electric telescopic rod 201 extends, it drives the connecting block 204 to move downward. Because the first protrusion 205 moves in the threaded groove 203, the connecting block 204 rotates while descending, i.e., the sampling needle 301... As the spiral blade descends and rotates, it cuts the tissue, facilitating tissue sampling. A sampling mechanism 3 is mounted on the lower surface of the connecting block 204. The sampling mechanism 3 includes a sampling needle 301. One end of the sampling needle 301 is fixedly connected to the lower surface of the connecting block 204. A spiral blade 302 is fixedly connected to the surface of the sampling needle 301. A second protrusion 303 is fixedly connected to the surface of the sampling needle 301. A rotating ring 704 is fixedly connected to the lower surface of the outer shell 101. The inner wall of the rotating ring 704 is threadedly connected to the surface of the needle 701. A second connecting ring 705 is mounted on the lower surface of the rotating ring 704. A battery 105 is fixedly connected to the inner wall of the outer shell 101. A first groove 103 is formed on the surface of the outer shell 101. A control component 104 is fixedly connected to the inner wall of the first groove 103.

[0030] Working principle: First, align the tip of the needle 701 with the area on the patient requiring biopsy and gently press downwards, causing the needle 701 to move inwards into the outer shell 101. The first connecting ring 601 drives the limiting rod 602 to move upwards. Then, energize the second electromagnet 502 and the first electromagnet 403, connecting the second electromagnet 502 and the first electromagnet 403. At this time, activate the second electric telescopic rod 501, causing it to retract. This causes the second electromagnet 502 to drive the first electromagnet 403 upwards, compressing the spring 402. When the second electromagnet 502 moves to the appropriate position, the second electromagnet 502 and the first electromagnet 403... When power is cut off at 403, the magnetism disappears, and the force stored in spring 402 pushes the first electromagnet 403 to quickly strike the surface of the limiting rod 602, pushing the sheath needle 701 downwards, allowing the present invention to quickly pierce the patient's body. After the sheath needle 701 is inserted into the area of ​​the patient requiring biopsy, the first electric telescopic rod 201 is activated. The first electric telescopic rod 201 extends, driving the connecting block 204 to move downwards. Since the first protrusion 205 moves in the threaded groove 203, the connecting block 204 rotates while descending, that is, the sampling needle 301 descends and rotates at the same time, so that the spiral blade 302 cuts the tissue, thereby facilitating tissue sampling.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral biopsy needle, comprising a biopsy needle body (1), characterized in that: The biopsy needle body (1) includes a shell (101), and an ejection mechanism (4) is installed on the inner wall of the shell (101). The ejection mechanism (4) includes a connecting rod (401), one end of which is fixedly connected to the inner wall of the shell (101), and a spring (402) is fixedly connected to the end of the connecting rod (401). A first electromagnet (403) is fixedly connected to the end of the spring (402). A power mechanism (5) is installed on the inner wall of the shell (101). The power mechanism (5) includes a second electric telescopic rod (501), one end of which is fixedly connected to the inner wall of the outer shell (101), and a second electromagnet (502) is fixedly connected to the end of the second electric telescopic rod (501). The lower surface of the second electromagnet (502) is in contact with the upper surface of the first electromagnet (403). A connecting mechanism (6) is installed on the inner wall of the outer shell (101), and a fixing mechanism (7) is installed inside the connecting mechanism (6).

2. The spiral biopsy needle as described in claim 1, characterized in that: The connecting mechanism (6) includes a guide rod (603), the bottom of which is fixedly connected to the inner wall of the outer shell (101), a limiting rod (602) is movably connected to the surface of the guide rod (603), a first connecting ring (601) is fixedly connected to the surface of the limiting rod (602), and a pad (604) is fixedly connected to the inner wall of the outer shell (101), the pad (604) being located below the limiting rod (602).

3. The spiral biopsy needle as described in claim 1, characterized in that: The fixing mechanism (7) includes a sleeve (701), the surface of which is fixedly connected to the surface of the first connecting ring (601). The surface of the outer shell (101) is provided with a through hole (102), the sleeve (701) is located inside the through hole (102), a fixing block (702) is fixedly connected to the inner wall of the sleeve (701), and a cutting blade (703) is movably connected inside the fixing block (702).

4. The spiral biopsy needle as described in claim 1, characterized in that: The inner wall of the outer shell (101) is equipped with a lifting mechanism (2). The lifting mechanism (2) includes a first electric telescopic rod (201). One end of the first electric telescopic rod (201) is movably connected to the inner wall of the outer shell (101). A fixing ring (202) is fixedly connected to the inner wall of the outer shell (101). The first electric telescopic rod (201) is located inside the fixing ring (202). The inner wall of the fixing ring (202) is provided with a threaded groove (203).

5. The spiral biopsy needle as described in claim 4, characterized in that: The end of the first electric telescopic rod (201) is fixedly connected to a connecting block (204), and the surface of the connecting block (204) is fixedly connected to a first protrusion (205), the surface of the first protrusion (205) being in contact with the inner wall of the threaded groove (203).

6. The spiral biopsy needle as described in claim 5, characterized in that: A sampling mechanism (3) is installed on the lower surface of the connecting block (204). The sampling mechanism (3) includes a sampling needle (301). One end of the sampling needle (301) is fixedly connected to the lower surface of the connecting block (204). A spiral blade (302) is fixedly connected to the surface of the sampling needle (301). A second protrusion (303) is fixedly connected to the surface of the sampling needle (301).

7. The spiral biopsy needle as described in claim 1, characterized in that: A rotating ring (704) is fixedly connected to the lower surface of the outer casing (101). The inner wall of the rotating ring (704) is threadedly connected to the surface of the sleeve (701). A second connecting ring (705) is installed on the lower surface of the rotating ring (704). A battery (105) is fixedly connected to the inner wall of the outer casing (101). A first groove (103) is formed on the surface of the outer casing (101). A control component (104) is fixedly connected to the inner wall of the first groove (103).

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