A rotary biopsy needle

Abstract

This utility model discloses a rotary biopsy needle, relating to the field of medical devices, comprising an outer needle and a sampling needle. One end of the outer needle has a sampling port on its sidewall, and the other end is connected to a needle base. A sampling needle is slidably inserted into the outer needle, and the rotating rod of the sampling needle passes through the needle base. An embedding hole is formed inside the needle base. One end of the sampling needle is connected to a sliding cylinder, which is slidably inserted into the embedding hole. A bending groove is formed on one side of the inner wall of the embedding hole, and a protrusion is formed on one side of the outer wall of the sliding cylinder, which is slidably connected inside the bending groove. This utility model simplifies the structure of the biopsy needle by eliminating complex rotating components such as motors, reducers, and transmission parts, thereby significantly reducing manufacturing costs. This design makes the biopsy needle more suitable for single use, effectively avoiding the risk of cross-infection and improving the safety and hygiene standards of medical procedures.

Description

Technical Field

[0001] This utility model relates to the field of medical devices, and in particular to a rotary biopsy needle. Background Technology

[0002] Rotary biopsy needles are widely used medical devices in the medical field, mainly used to take tissue samples from patients for pathological analysis. These biopsy needles can accurately obtain target tissue samples by rotating and cutting, thereby helping doctors make accurate diagnoses.

[0003] However, existing rotary biopsy needles typically involve complex rotating components, including motors, reducers, and transmission parts. These components not only increase the cost of the biopsy needle but also make the entire device relatively bulky and difficult to operate. More importantly, due to the presence of these rotating components, biopsy needles are often not suitable for single use, which increases the risk of cross-infection to some extent. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, the purpose of this utility model is to provide a rotary biopsy needle, which solves the following technical problems: how to reduce the cost of biopsy needles and how to achieve the rotary cutting action of the sampling needle through manual operation.

[0005] To address the problems in the existing technology, the technical solution of this utility model is as follows:

[0006] A rotary biopsy needle includes an outer needle and a sampling needle. One end of the outer needle has a sampling port on its side wall, and the other end of the outer needle is connected to a needle base. The sampling needle is slidably inserted into the outer needle. The rotating rod of the sampling needle passes through the needle base. An embedding hole is opened inside the needle base. One end of the sampling needle is connected to a slide tube, which is slidably inserted into the embedding hole. A bending groove is opened on one side of the inner wall of the embedding hole, and a protrusion is provided on one side of the outer wall of the slide tube. The protrusion is slidably connected inside the bending groove.

[0007] Preferably, ear pieces are fixedly connected to both sides of the needle base, and finger holes are opened on the surface of the ear pieces. The ear pieces serve as additional gripping points, increasing the stability and control of the operator when operating the biopsy needle. The finger holes allow the operator to insert and grip the needle with their fingers, further enhancing the firmness of the grip and the accuracy of the operation, which helps to maintain the stability of the biopsy needle during the biopsy process.

[0008] Preferably, an adjustment plate is fixedly connected to the top of the slide tube. The adjustment plate allows the operator to adjust and control the depth and position of the sampling needle. By pushing or pulling the adjustment plate, the operator can indirectly control the sliding distance of the sampling needle inside the outer needle, thereby achieving precise control of the sampling depth.

[0009] Preferably, the outer side of the adjustment plate is provided with strip-shaped grooves at equal intervals to increase the friction and grip of the adjustment plate. When the operator's fingers come into contact with the adjustment plate, the strip-shaped grooves can provide more contact points and gripping force, preventing operation errors caused by hand slippage or hand fatigue during operation.

[0010] Preferably, a strip-shaped hole is provided on one side of the needle base, through which the working status and sampling position of the sampling needle can be observed, thereby more accurately judging the progress and effect of the biopsy.

[0011] Preferably, the bottom of the needle base is provided with a connector sleeve, and one end of the outer needle is slidably inserted into the inside of the connector sleeve. Through the sliding insertion method of the connector sleeve, the various parts of the biopsy needle can be easily assembled and disassembled, which facilitates cleaning, maintenance and replacement.

[0012] Preferably, the top of the bending groove is open and extends upward to the top of the embedding hole, so that the protrusion on the slide can slide along the bending groove to its top and be smoothly pulled out from the embedding hole, thereby achieving complete separation of the slide and the needle base.

[0013] Preferably, the surface of the outer needle is provided with equidistant black stripes to enhance the visual effect of the biopsy needle, allowing medical personnel to see the movement trajectory of the outer needle more clearly during the operation, and at the same time serving as a scale mark to indicate the biopsy depth.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] 1. This utility model simplifies the structure of the biopsy needle by eliminating complex rotating components such as motors, reducers and transmission parts, thereby significantly reducing manufacturing costs. This design makes the biopsy needle more suitable for single use, effectively avoiding the risk of cross-infection and improving the safety and hygiene standards of medical operations.

[0016] 2. This utility model adopts a manual operation mode, which can easily complete the biopsy process without relying on external power supply or complex equipment. It realizes the reciprocating rotation of the sampling needle during the movement. This rotational cutting method can obtain target tissue samples more accurately, reduce damage to surrounding tissues, and improve the accuracy and reliability of biopsy results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the needle base structure of this utility model.

[0019] Figure 3 This is a schematic diagram of the sampling needle structure of this utility model.

[0020] Reference numerals: 1. Outer needle; 11. Sampling port; 2. Sampling needle; 3. Needle base; 31. Embedding hole; 32. Bending groove; 33. Strip hole; 4. Sliding cylinder; 41. Protrusion; 5. Ear piece; 51. Finger hole; 6. Adjusting piece; 61. Strip groove; 7. Insertion cylinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] The rotary biopsy needle has an outer needle 1 and a sampling needle 2;

[0023] like Figures 1 to 3 As shown, one end of the outer needle 1 has a sampling port 11 on its side wall for exposing the target tissue during cutting. The other end of the outer needle 1 is connected to a needle base 3. A sampling needle 2 is slidably inserted into the outer needle 1. The rotating rod of the sampling needle 2 passes through the needle base 3. An embedding hole 31 is opened inside the needle base 3 for accommodating a slide cylinder 4 and a part of the sampling needle 2. One end of the sampling needle 2 is connected to the slide cylinder 4. The slide cylinder 4 is slidably inserted into the embedding hole 31. A bending groove 32 is opened on one side of the inner wall of the embedding hole 31. A protrusion 41 is provided on one side of the outer wall of the slide cylinder 4. The protrusion 41 is slidably connected inside the bending groove 32.

[0024] When in use, the outer needle 1 is inserted into the collection area. When the puncture depth of the end of the outer needle 1 is at the target tissue, the sampling needle 2 is first pulled out from the outer needle 1 by manual operation to open the sampling port 11 so that part of the target tissue can be embedded into the sampling port 11. Then, the slide cylinder 4 is pressed to make the slide cylinder 4 slide down along the embedding hole 31. During the sliding process of the slide cylinder 4, the protrusion 41 on it slides along the bending groove 32. Due to the shape design of the bending groove 32, the protrusion 41 will be guided when sliding, thereby driving the sampling needle 2 to move forward and rotate back and forth. This rotation action allows the sampling needle 2 to cut the target tissue sample more effectively.

[0025] Finally, when the slide tube 4 slides to the bottom of the embedding hole 31, the sampling needle 2 has completed the cutting of the target tissue and left the tissue sample inside. At this time, the entire biopsy needle can be pulled out from the target tissue, and the sampling needle 2 and the tissue sample on it can be removed from the outer needle 1 by appropriate means for subsequent analysis.

[0026] like Figures 1 to 3As shown, ear pieces 5 are fixedly connected to both sides of the needle base 3. Finger holes 51 are provided on the surface of the ear pieces 5. The ear pieces 5 and the finger holes 51 on their surface facilitate the operator's grip and manipulation of the biopsy needle. By passing the fingers through the finger holes 51, the operator can more stably control the position and direction of the biopsy needle, ensuring that the biopsy needle can accurately reach the target tissue location during the sampling process.

[0027] like Figures 1 to 3 As shown, an adjusting plate 6 is fixedly connected to the top of the slide cylinder 4. By operating the adjusting plate 6, the operator can control the sliding of the slide cylinder 4 in the embedded hole 31, thereby controlling the extension and retraction of the sampling needle 2.

[0028] like Figures 1 to 3 As shown, the adjustment piece 6 has equidistant grooves 61 on its outer side. By adding the grooves 61, a more obvious tactile sensation can be felt when holding and adjusting the adjustment piece 6, thereby controlling the operation of the biopsy needle more accurately.

[0029] like Figures 1 to 3 As shown, a strip-shaped hole 33 is provided on one side of the needle base 3. Through the strip-shaped hole 33, the position and status of the slide cylinder 4 and the sampling needle 2 can be seen directly, so as to determine whether the biopsy needle is working properly.

[0030] like Figures 1 to 3 As shown, the bottom of the needle base 3 is provided with a connector 7, and one end of the outer needle 1 is slidably inserted into the connector 7. With this design, the operator can easily insert or pull out the outer needle 1 into the connector 7, thereby completing the assembly or disassembly process of the biopsy needle. This not only improves the flexibility and maintainability of the biopsy needle, but also helps to reduce manufacturing costs and simplify the operation process.

[0031] like Figures 1 to 3 As shown, the top of the bending groove 32 is open and extends upward to the top of the insertion hole 31, so that the protrusion 41 on the slide cylinder 4 can slide along the bending groove 32 to its top and be smoothly pulled out from the insertion hole 31, thereby achieving complete separation of the slide cylinder 4 from the needle base 3.

[0032] like Figures 1 to 3 As shown, the surface of the outer needle 1 is provided with equidistant black stripes to enhance the visual effect of the biopsy needle, allowing medical personnel to see the movement trajectory of the outer needle more clearly during the operation. At the same time, it serves as a scale mark to indicate the biopsy depth.

[0033] 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 rotary biopsy needle, comprising an outer needle (1) and a sampling needle (2), wherein a sampling port (11) is provided on one side wall of the outer needle (1), and a needle base (3) is connected to the other end of the outer needle (1), and the sampling needle (2) is slidably inserted inside the outer needle (1), and the rotating rod of the sampling needle (2) passes through the needle base (3), characterized in that, The needle base (3) has an embedded hole (31) inside. One end of the sampling needle (2) is connected to a slide cylinder (4). The slide cylinder (4) is slidably inserted into the embedded hole (31). A bending groove (32) is provided on one side of the inner wall of the embedded hole (31). A protrusion (41) is provided on one side of the outer wall of the slide cylinder (4). The protrusion (41) is slidably connected inside the bending groove (32).

2. The rotary biopsy needle according to claim 1, characterized in that, Both sides of the needle base (3) are fixedly connected with ear pieces (5), and finger holes (51) are opened on the surface of the ear pieces (5).

3. The rotary biopsy needle according to claim 1, characterized in that, An adjusting plate (6) is fixedly connected to the top of the slide (4).

4. The rotary biopsy needle according to claim 3, characterized in that, The adjusting plate (6) has strip-shaped grooves (61) evenly spaced on its outer side.

5. The rotary biopsy needle according to claim 1, characterized in that, The needle base (3) has a strip-shaped hole (33) on one side.

6. The rotary biopsy needle according to claim 1, characterized in that, The needle base (3) has a plug tube (7) at its bottom, and one end of the outer needle (1) is slidably inserted into the plug tube (7).

7. The rotary biopsy needle according to claim 1, characterized in that, The top of the bending groove (32) is open and extends upward to the top of the embedding hole (31).

8. The rotary biopsy needle according to claim 1, characterized in that, The outer needle (1) has black stripes spaced at equal intervals on its surface.

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