Biopsy needle, biopsy handle and biopsy device
By introducing an identification mark and component alignment calibration mechanism between the biopsy needle and the handle, the problem of low calibration accuracy in traditional biopsy devices is solved, achieving high-precision positioning and reliable use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING XISHAN SCI & TECH
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional biopsy devices have low calibration accuracy, which can easily cause them to jam during use, affecting normal operation.
It adopts a detachable connection design between the biopsy needle and the biopsy handle. The inner blade tube is equipped with an identification mark, and the biopsy handle is equipped with an identification element. Precise calibration is achieved by aligning the identification mark with the window, ensuring the accurate positioning of the inner blade tube inside the puncture tube.
The calibration accuracy of the biopsy device has been improved, preventing jamming during retraction and ensuring reliable operation.
Smart Images
Figure CN224540244U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a biopsy needle, a biopsy handle, and a biopsy device. Background Technology
[0002] During surgical procedures, biopsy devices are used to sample lesions for removal or to provide biopsy specimens. For example, in breast surgery, a biopsy needle is inserted into or near the affected area to collect a sample. The biopsy needle is disposable, but after being assembled with a reusable handle, proper alignment and testing of the needle and handle assembly are necessary to ensure successful sampling. Traditional biopsy devices have low calibration accuracy, which can lead to jamming during use and affect normal operation. Utility Model Content
[0003] Therefore, it is necessary to provide a biopsy needle, biopsy handle, and biopsy device to address the technical problem of low calibration accuracy.
[0004] The technical solution is as follows:
[0005] On the one hand, a biopsy needle is provided, detachably connected to a biopsy handle, comprising:
[0006] Needle housing, wherein the needle housing is provided with a first window; and
[0007] A puncture tube, the rear end of which is inserted into the needle housing and fixed relative to the axial position of the needle housing, and the front end of which is provided with a sampling window;
[0008] An inner knife tube is movably disposed inside the puncture tube. The inner knife tube can move back and forth along the axial direction of the puncture tube to open and close the sampling window. The outer side wall of the inner knife tube is provided with at least one identification mark.
[0009] When the first window is directly opposite the corresponding identification mark, the sampling window is in a fully open or fully closed state, and the identification mark directly opposite the first window can be identified by the identification element on the biopsy handle.
[0010] The technical solution will be further explained below:
[0011] In one embodiment, at least two identification marks are arranged along the axial direction of the inner blade tube;
[0012] When the first window is directly aligned with one of the identification markers, the sampling window is fully open.
[0013] When the first window is directly opposite another of the identification marks, the sampling window is in a fully closed state.
[0014] In one embodiment, at least two of the identification marks include at least two identification rings arranged at axial intervals along the inner blade tube.
[0015] In one embodiment, the color of the marking ring is different from the color of the outer wall of the inner knife tube.
[0016] In one embodiment, the first window is an opening formed in the needle housing such that when the first window is facing any of the identification marks, the identification mark is exposed at the opening.
[0017] In one embodiment, the needle housing has an opening, and the first window is a first filter element installed in the opening.
[0018] On the other hand, a biopsy handle is provided, wherein the biopsy needle is detachably mounted on the biopsy handle, the biopsy handle includes a handle housing and an identification element disposed on the handle housing, the position of the identification element corresponds to the position of the first window, and the identification element can identify the identification mark when any of the identification marks is directly opposite the first window.
[0019] In one embodiment, the handle housing has a second window, and the identification element is disposed within the second window.
[0020] In one embodiment, the identification element is a photoelectric sensor, and the handle housing is provided with a second filter element, which is disposed within the second window and located at the incident end of the identification mark.
[0021] On the other hand, a biopsy device is provided, including the biopsy needle and the biopsy handle, wherein the biopsy needle and the biopsy handle are adapted to each other.
[0022] In the biopsy needle, biopsy handle, and biopsy device of the above embodiments, after the biopsy needle and the handle housing of the biopsy handle are connected to each other, the inner blade moves back and forth in the axial direction within the puncture tube to open or close the sampling window. During the movement of the inner blade relative to the puncture tube, when the identification mark on the inner blade is radially aligned with the first window on the needle housing, the identification mark aligned with the first window is identified by the identification element, thereby enabling the identification signal emitted by the identification element to reach the identification mark and be identified by the identification element. This allows for accurate determination of whether the inner blade has reached the position of complete window closure relative to the puncture tube, and thus allows for accurate positioning calibration. The calibration accuracy is high, and there is no risk of backward jamming, ensuring reliable normal use. Attached Figure Description
[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.
[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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.
[0025] Figure 1 This is a schematic diagram of the structure of a biopsy device according to one embodiment, viewed from one perspective.
[0026] Figure 2 for Figure 1 A schematic diagram of the biopsy device from another perspective;
[0027] Figure 3 for Figure 2 Axial sectional view of the biopsy device;
[0028] Figure 4 for Figure 1 A schematic diagram of the needle housing of a biopsy device;
[0029] Figure 5 for Figure 1 A schematic diagram of the internal blade of a biopsy device;
[0030] Figure 6 This is a schematic diagram of the biopsy device according to another embodiment, viewed from one perspective.
[0031] Figure 7 for Figure 6 A partial enlarged view of part A of the biopsy device;
[0032] Figure 8 for Figure 6 A schematic diagram of the handle housing of the biopsy device.
[0033] Explanation of reference numerals in the attached figures:
[0034] 10. Biopsy device; 100. Biopsy needle; 110. Needle housing; 111. First window; 120. Puncture tube; 121. Sampling window; 130. Inner blade tube; 131. Identification mark; 200. Biopsy handle; 210. Handle housing; 211. Second window; 220. Identification element; 300. First filter element; 400. Second filter element. Detailed Implementation
[0035] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0036] The biopsy device includes a biopsy handle and a biopsy needle detachably mounted on the handle. The handle is reusable, while the needle can be either disposable or reusable. The needle comprises a puncture tube and an inner blade. Power from a motor within the handle is transmitted to the inner blade via a transmission mechanism, allowing the inner blade to move back and forth along the axial direction of the puncture tube to cut tissue aspirated from the sampling window under negative pressure. Before sampling and cutting, the inner blade needs to be calibrated. Traditional biopsy devices determine whether the inner blade has reached the fully closed window position by detecting motor operating parameters; however, this method has low calibration accuracy and is prone to jamming during use after calibration, affecting normal operation.
[0037] In view of this, the present invention provides a biopsy needle, a biopsy handle, and a biopsy device to avoid calibration failure or jamming during retraction, thereby improving the reliability of the biopsy device.
[0038] like Figures 1 to 8 As shown, in one embodiment, a biopsy device 10 is provided, including a biopsy needle 100 and a biopsy handle 200, wherein the biopsy needle 100 is compatible with the biopsy handle 200. Furthermore, the biopsy needle 100 and the biopsy handle 200 have high calibration accuracy, preventing jamming and ensuring reliable normal operation.
[0039] like Figure 1 and Figure 6 As shown, in one embodiment, a biopsy needle 100 is provided, which is detachably connected to a biopsy handle 200 by means of plug-in and / or snap-fit. The biopsy needle 100 includes a needle housing 110, a puncture tube 120, and an inner blade tube 130.
[0040] like Figure 3 and Figure 4 As shown, the needle housing 110 is provided with a first window 111.
[0041] The rear end of the puncture tube 120 is inserted into the needle housing 110, and the axial position of the puncture tube 120 and the needle housing 110 is fixed relative to each other. The front end of the puncture tube 120 is provided with a sampling window 121.
[0042] It should be noted that the rear end and the front end of the puncture tube 120 refer to the two ends opposite each other along the axial direction. The front end is relatively far away from the needle housing 110, and the front end is usually provided with a needle tip to puncture the tissue.
[0043] The inner blade tube 130 is movably disposed within the puncture tube 120, and the inner blade tube 130 can move back and forth along the axial direction of the puncture tube 120 to open or close the sampling window 121. Moreover, the outer wall of the inner blade tube 130 is provided with at least one identification mark 131.
[0044] like Figure 6 and Figure 7 As shown, in one embodiment, a biopsy handle 200 is provided, wherein the biopsy handle 200 includes a handle housing 210 and an identification element 220 disposed on the handle housing 210. Furthermore, the position of the identification element 220 corresponds to the position of the first window 111, and when any of the identification marks 131 are directly opposite the first window 111, the identification element 220 can identify the identification mark 131.
[0045] When the first window 111 is directly opposite the corresponding identification mark 131, the sampling window 121 is in a fully open or fully closed state, and the identification mark 131 directly opposite the first window 111 can be identified by the identification element 220 on the biopsy handle 200.
[0046] After the biopsy needle 100 and the handle housing 210 of the biopsy handle 200 in the above embodiment are connected to each other, the inner blade tube 130 moves back and forth in the axial direction within the puncture tube 120 to open or close the sampling window 121. During the movement of the inner blade tube 130 relative to the puncture tube 120, when the identification mark 131 on the inner blade tube 130 is radially aligned with the first window 111 on the needle housing 110, the identification mark 131 aligned with the first window 111 is identified by the identification element 220, so that the identification signal emitted by the identification element 220 can reach the identification mark 131 and be identified by the identification element 220. In this way, it can be accurately determined whether the inner blade tube 130 has reached the position of complete window closure relative to the puncture tube 120, and then the positioning calibration can be accurately performed. The calibration accuracy is high, and there will be no backward jamming, so it can be used reliably and normally.
[0047] like Figure 5As shown, in one embodiment, at least two identification marks 131 are arranged along the axial direction of the inner knife tube 130. When the first window 111 is directly opposite one of the identification marks 131, the sampling window 121 is fully open; when the first window 111 is directly opposite the other of the identification marks 131, the sampling window 121 is fully closed. Thus, the movement position of the inner knife tube 130 relative to the puncture tube 120 can be determined by identifying different identification marks 131 using the identification element 220. This allows for accurate determination of whether the inner knife tube 130 has reached a fully closed or fully open position relative to the puncture tube 120, enabling accurate positioning and calibration. The calibration accuracy is high, preventing excessive backward movement and jamming, as well as incomplete opening, ensuring reliable and normal operation.
[0048] Optionally, the identification mark 131 can be an identification pattern or coating of different colors, as long as it can be identified by the identification element 220 to determine whether the window has been fully closed.
[0049] In one embodiment, at least two identification marks 131 include at least two identification rings arranged axially spaced along the inner knife tube 130. Thus, when one of the different identification rings faces the first window 111, the identification signal emitted by the identification element 220 is reflected by the different identification rings, allowing the identification element 220 to receive the reflected signal. This enables accurate determination of whether the inner knife tube 130 has reached a completely closed or completely open position relative to the puncture tube 120, allowing for accurate positioning calibration. The calibration accuracy is high, preventing backward jamming or incomplete window opening, ensuring reliable and normal operation.
[0050] In one embodiment, two different colored marker rings are arranged at an axial distance along the inner knife tube 130. When one colored marker ring is directly opposite the first window 111, it indicates that the inner knife tube 130 has moved axially within the puncture tube 120 to fully open the sampling window 121. When the other colored marker ring is directly opposite the first window 111, it indicates that the inner knife tube 130 has moved axially within the puncture tube 120 to fully close the sampling window 121. Thus, the position of the inner knife tube 130 relative to the puncture tube 120 is positioned and controlled by the distance between the two marker rings, improving the positioning and calibration accuracy of the inner knife tube 130.
[0051] In one embodiment, the color of the marking ring is different from the color of the outer wall of the inner blade tube 130. This allows the identification element 220 to accurately identify the marking ring, avoiding misidentification.
[0052] In one embodiment, the first window 111 is an opening formed on the needle housing 110, so that when the first window 111 is directly opposite any of the identification marks 131, the identification mark 131 is exposed at the opening, thereby enabling the identification element 220 on the handle housing 210 to identify the identification mark 131 directly opposite the opening, and thus accurately determine whether the inner knife tube 130 has reached the position of complete window closure relative to the puncture tube 120, and then accurately perform positioning calibration. The calibration accuracy is high, there will be no backward jamming, and it can be used reliably and normally.
[0053] The specific size or outline of the opening can be flexibly adjusted according to the actual usage or design.
[0054] In another embodiment, the needle housing 110 has an opening, and the first window 111 is a first filter element 300 installed in the opening. Thus, the first filter element 300 not only provides dust and water protection for the identification element 220, but also isolates it from external light interference, ensuring identification accuracy.
[0055] The first filter element 300 can be a filter plate or a filter film.
[0056] like Figure 7 and Figure 8 As shown, in one embodiment, the handle housing 210 is provided with a second window 211, and the identification element 220 is disposed in the second window 211 by means of snap-fit or plug-in. In this way, the identification element 220 can be stably and reliably installed in the second window 211, avoiding detachment or falling off.
[0057] The identification element 220 can identify the reflected signal through optical signals or other means.
[0058] like Figure 7 As shown, in one embodiment, the identification element 220 is a photoelectric sensor, and the handle housing 210 is provided with a second filter element 400. The infrared filter element is disposed within the second window 211 and located at the incident end of the identification mark 131. Thus, the second filter element 400 can not only provide dustproof and waterproof protection for the identification mark 131, but also isolate external light interference, ensuring identification accuracy.
[0059] The second filter element 400 can be a filter plate or a filter film. Optionally, the identification element 220 can be an infrared sensor with a transmitting unit and a receiving unit.
[0060] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0063] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component.
[0064] The term “and / or” as used herein includes any and all combinations of one or more of the related listed items.
[0065] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0066] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A biopsy needle, detachably connected to a biopsy handle, characterized in that, include: Needle housing, wherein the needle housing is provided with a first window; and A puncture tube, the rear end of which is inserted into the needle housing and fixed relative to the axial position of the needle housing, and the front end of which is provided with a sampling window; An inner knife tube is movably disposed inside the puncture tube. The inner knife tube can move back and forth along the axial direction of the puncture tube to open and close the sampling window. The outer side wall of the inner knife tube is provided with at least one identification mark. When the first window is directly opposite the corresponding identification mark, the sampling window is in a fully open or fully closed state, and the identification mark directly opposite the first window can be identified by the identification element on the biopsy handle.
2. The biopsy needle according to claim 1, characterized in that, The inner blade tube is arranged with at least two identification marks along its axial direction; When the first window is directly aligned with one of the identification markers, the sampling window is fully open. When the first window is directly opposite another of the identification marks, the sampling window is in a fully closed state.
3. The biopsy needle according to claim 2, characterized in that, The identification markings at least two locations include at least two marking rings arranged at axial intervals along the inner blade tube.
4. The biopsy needle according to claim 3, characterized in that, The color of the marking ring is different from the color of the outer wall of the inner knife tube.
5. The biopsy needle according to any one of claims 1-4, characterized in that, The first window is an opening formed on the needle housing so that when the first window is facing any of the identification marks, the identification mark is exposed at the opening.
6. The biopsy needle according to any one of claims 1-4, characterized in that, The needle housing has an opening, and the first window is a first filter element installed in the opening.
7. A biopsy handle, characterized in that, The biopsy needle as described in any one of claims 1-6 is detachably mounted on the biopsy handle, the biopsy handle including a handle housing and an identification element disposed on the handle housing, the position of the identification element corresponding to the position of the first window, and the identification element being able to identify the identification element when any of the identification marks is directly opposite the first window.
8. The biopsy handle according to claim 7, characterized in that, The handle housing is provided with a second window, and the identification element is located in the second window.
9. The biopsy handle according to claim 8, characterized in that, The identification element is a photoelectric sensor, and the handle housing is provided with a second filter element, which is disposed in the second window and located at the incident end of the identification mark.
10. A biopsy device, characterized in that, It includes a biopsy needle as described in any one of claims 1-6 and a biopsy handle as described in any one of claims 7-9, wherein the biopsy needle is adapted to the biopsy handle.