Semi-automatic biopsy gun with angle display function

Abstract

The utility model belongs to the field of medical equipment, and particularly relates to a semi-automatic biopsy gun with angle display, which comprises a shell, a needle sleeve and a sampling needle, the front part of the shell is provided with a first sliding cavity, a sliding column is arranged in the first sliding cavity, and the sliding column is sleeved on the needle sleeve and can move back and forth along the needle sleeve; a convex column matched with the coaxial needle is arranged at the front end of the sliding column, a clamping column is arranged at the side part of the sliding column, and a first clamping groove and a second clamping groove are correspondingly formed in the shell; when the clamping column is matched with the first clamping groove, the front end of the sliding column extends out of the shell by a first length, and when the clamping column is matched with the second clamping groove, the front end of the sliding column extends out of the shell by a second length. The semi-automatic biopsy gun with the angle display function is convenient to use and easy and convenient to operate, meanwhile, the sampling stability and accuracy are guaranteed, and sampling failures caused by reasons depending on experience and the like are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of medical devices, specifically relating to a semi-automatic biopsy gun with a built-in angle display. Background Technology

[0002] To accurately determine whether a tumor in a patient's body is malignant or benign, a biopsy is usually required, hence the development of biopsy guns or biopsy needles. A typical biopsy gun consists of a needle sheath, a grooved sampling needle, and a handle. In use, the coaxial needle is first inserted into the body. Under X-ray, CT, or ultrasound guidance, once the tumor site is reached, the biopsy needle is inserted along the coaxial needle into the vicinity of the tumor. Simultaneously, the needle sheath and sampling needle are pulled back, and then the sampling needle is pushed out, penetrating the tumor tissue. The needle sheath is then quickly ejected, allowing the sheath to cut out the tumor tissue within the groove and retain it therein.

[0003] Common biopsy guns have two settings, allowing control over the sample size. Generally, the second setting is when the needle sheath is fully pulled back. After inserting the biopsy needle, the coaxial needle can be mounted at the front of the handle. When the needle sheath is fully pulled back, the tip of the sampling needle is flush with the tip of the coaxial needle. Extending the sampling needle at this setting fully exposes the sampling groove, allowing for a larger tissue sample. When the needle sheath is pulled back to the first setting, a section of the top of the needle sheath protrudes beyond the coaxial needle. Extending the sampling needle at this setting only partially exposes the groove, allowing for a smaller tissue sample. Different settings can be selected depending on the size of the tumor or the specific situation.

[0004] When using the lowest setting for small tumors, if the coaxial needle is still attached to the front of the handle, it may have already penetrated the tumor. When the sampling needle is then withdrawn, the groove of the sampling needle may have already protruded beyond the tumor, leading to sampling failure. Generally, when using the lowest setting, the coaxial needle should not be attached to the front of the handle. Experience is required to retract the biopsy needle, align the tip of the needle sheath with the tip of the coaxial needle, and then withdraw the sampling needle. This allows the groove at the front of the sampling needle to enter the tumor, ensuring successful sampling. However, if the coaxial needle is not attached to the front of the handle, both the coaxial needle and the biopsy gun are suspended in the air during sampling, resulting in poor stability. Furthermore, novice doctors often forget to retract the biopsy needle, or lack experience, retracting it too far or too little, leading to sampling failure. Additionally, if the puncture angle of the biopsy needle does not match the angle measured on the preoperative CT image, it will also lead to sampling failure. Utility Model Content

[0005] To address the aforementioned issues, this invention aims to provide a semi-automatic biopsy gun with a built-in angle display. This gun is convenient to use and easy to operate. The built-in angle display module ensures the stability and accuracy of sampling, avoiding sampling failures caused by relying on experience or other factors.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a semi-automatic biopsy gun with built-in angle display, comprising a housing, a needle sleeve, a sampling needle, and an angle display module. The front part of the housing is provided with a first sliding cavity, and the first sliding cavity is provided with an angle guiding module and a sliding column. The sliding column is sleeved on the needle sleeve and can move back and forth along the needle sleeve. The front end of the sliding column is provided with a protrusion adapted to the coaxial needle, and its side is provided with a locking post. A first locking groove and a second locking groove are provided on the housing. When the locking post matches the first locking groove, the front end of the sliding column extends out of the housing by a first length. When the locking post matches the second locking groove, the front end of the sliding column extends out of the housing by a second length.

[0007] Furthermore, the front end of the housing is symmetrically provided with first sliding grooves on both sides, and the sliding pillar is symmetrically provided with sliding wings on both sides, the sliding wings being able to slide back and forth along the first sliding groove; the first slot and the second slot are provided on the first sliding groove and are offset on both sides of the housing; the sliding wings are correspondingly offset with the first locking post and the second locking post.

[0008] Furthermore, both the first and second locking posts are L-shaped, and their lower outer ends are provided with bevels.

[0009] Furthermore, an angle guidance module is also provided inside the first sliding cavity. The angle guidance module consists of a gyroscope, a Bluetooth module, and a power module. The gyroscope and the Bluetooth module are electrically connected to the power module, respectively.

[0010] Furthermore, a second sliding cavity is provided at the rear of the housing, and a first slider is provided inside the second sliding cavity. A handle is provided at the rear end of the housing, and the tail end of the needle sleeve is fixed to the first slider; the tail end of the sampling needle passes through the first slider and is fixed to the handle.

[0011] The first slider has a second slide groove at both ends along its length. The handle has a pull bar symmetrically arranged at both ends. The front end of the pull bar has a first locking block that can slide back and forth along the second slide groove. The rear end of the second slide groove has a stop bar.

[0012] The second slide groove is provided with a first card seat and a second card seat from front to back. Both the first card seat and the second card seat include two second card blocks, which are symmetrically arranged on both sides of the second slide groove.

[0013] The housing is symmetrically provided with spring pieces on the upper and lower sides. The inner side of the spring pieces is provided with a buckle for cooperating with the first card seat and the second card seat. The buckle is provided with a notch in the middle corresponding to the second sliding groove. The bottom surface of the notch gradually rises from back to front. A spring is provided between the rear end of the first slider and the second sliding cavity.

[0014] Furthermore, the front end of the buckle is a bevel, and the rear end is a vertical surface.

[0015] Furthermore, the front end of the second card block is a vertical surface, and the rear end is an inclined surface.

[0016] Furthermore, a silicone pad is provided between the front end of the first slider and the second sliding cavity.

[0017] Furthermore, the front end of the pull bar is provided with a notch, and a stopper is provided inside the housing. One side of the stopper is provided with a blocking block that cooperates with the notch on the pull bar, and the other side is provided with a second slider. A sliding hole is provided on the bottom surface of the housing near the tail end. The second slider protrudes from the sliding hole to the surface of the housing and can slide up and down along the sliding hole.

[0018] Furthermore, a first spring is provided between the rear end of the sliding column and the first sliding cavity.

[0019] This invention relates to a semi-automatic biopsy gun with a built-in angle display. The length of the slide column extending from the housing can be adjusted for different settings. In setting one, adjusting the slide column to extend further achieves the same effect as setting two. After installing the coaxial needle, sampling can be performed directly, ensuring sampling stability and accuracy, and avoiding sampling failures caused by relying on experience. The built-in angle guidance module can transmit the puncture needle angle to a computer or mobile phone via Bluetooth during insertion and sampling. Doctors can precisely adjust the biopsy needle to the angle measured in the preoperative CT image based on the displayed angle, ensuring accurate positioning of the biopsy needle within the tumor and avoiding sampling failure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the semi-automatic biopsy gun with built-in angle display of this utility model.

[0021] Figure 2 for Figure 1 Internal structure diagram;

[0022] Figure 3 for Figure 1 Another internal structure diagram;

[0023] Figure 4 This is a schematic diagram of the sliding column structure;

[0024] Figure 5 This is a schematic diagram of the structure of the first slider;

[0025] Figure 6 This is a schematic diagram of the internal structure of the shell;

[0026] Figure 7 for Figure 1 Another internal structure diagram;

[0027] Figure 8 This is a schematic diagram of the blocker's structure;

[0028] Figure 9 A schematic diagram showing the location of the microswitch;

[0029] In the above figure: 1-Housing; 101-First sliding cavity; 102-Sliding column; 1021-Protruding column; 1022-Sliding wing; 1023-First locking column; 1024-Second locking column; 103-First locking groove; 104-Second locking groove; 105-First sliding groove; 106-Second sliding cavity; 107-First slider; 1071-Second sliding groove; 1072-Stop bar; 1073-First locking seat; 1074-Second locking seat; 108-Spring piece; 1081-Snap fastener; 109-Sliding hole; 2-Needle sleeve; 3-Sampling needle; 4-Handle; 401-Pull bar; 402-First locking block; 5-Silicone pad; 6-Blocker; 601-Blocking block; 602-Second slider; 7-Handle; 8-Micro switch. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages 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 only for explaining this utility model and are not intended to limit this utility model.

[0031] In existing biopsy guns, when using the lowest setting, if the coaxial needle is still attached to the front of the handle, the needle sheath may have already pierced the tumor. When the sampling needle is then withdrawn, the groove of the sampling needle may have already protruded beyond the tumor, leading to sampling failure. Generally, when using the lowest setting, the coaxial needle should not be attached to the front of the handle. Experience is required to retract the biopsy needle, align the tip of the needle sheath with the tip of the coaxial needle, and then withdraw the sampling needle. Only then can the groove at the tip of the sampling needle enter the tumor, ensuring successful sampling. However, if the coaxial needle is not attached to the front of the handle, both the coaxial needle and the biopsy gun are suspended in the air during sampling, resulting in poor stability. Furthermore, novice doctors often forget to retract the biopsy needle, or lack experience, retracting it too far or too little, leading to sampling failure.

[0032] To address the aforementioned problems, this invention provides a semi-automatic biopsy gun with a built-in angle display, such as... Figure 1 As shown, it includes a housing 1, a needle sheath 2, and a sampling needle 3. Figure 2As shown, the front of the housing 1 is provided with a first sliding cavity 101, and a sliding post 102 is provided inside the first sliding cavity 101. The sliding post 102 is sleeved on the needle sleeve 2 and can move back and forth along the needle sleeve 2. The front end of the sliding post 102 is provided with a protrusion 1021 adapted to the coaxial needle, and the side of the sliding post 102 is provided with a retaining post. Correspondingly, the housing 1 is provided with a first retaining groove 103 and a second retaining groove 104. Figure 6 As shown; when the locking pin matches the first locking slot 103, the front end of the sliding pin 102 extends out of the housing 1 by a first length; when the locking pin matches the second locking slot 104, the front end of the sliding pin 102 extends out of the housing 1 by a second length.

[0033] By setting a locking post on the slide post 102, and correspondingly setting a first locking groove 103 and a second locking groove 104 on the housing 1, the slide post 102 can slide back and forth along the needle sleeve 2 within the first sliding cavity 101, thus allowing the locking post to be adjusted to cooperate with different locking grooves. When the locking post is matched with the first locking groove 103, the front end of the slide post 102 extends out of the housing 1 by a first length; when the locking post is matched with the second locking groove 104, the front end of the slide post 102 extends out of the housing 1 by a second length. It can be set so that when the locking post is matched with the second locking groove 104, only the protrusion 1021 at the front end of the slide post 102 extends out of the housing 1; when the locking post is matched with the first locking groove 103, the extension of the slide post 102 is slightly longer. This length can be set to the difference in length between the sampling needle extending from the sampling groove between the first and second settings of the biopsy gun. When the sampling needle is used in the first position, it can be adjusted so that the locking post matches the first locking groove 103. At this time, the sliding post 102 extends a little beyond the housing 1, and the coaxial needle can still be installed on the protrusion 1021, avoiding suspended sampling and improving stability. At the same time, when using it, there is no need to rely on experience to retract the sampling needle. It can be sampled directly as when using the second position, ensuring the accuracy of sampling.

[0034] This utility model's semi-automatic biopsy gun with built-in angle display allows for adjustment of the length of the slide column 102 extending from the housing 1 when using different settings. When using the first setting, adjusting the slide column 102 to extend further out of the housing 1 achieves the same effect as using the second setting. After installing the coaxial needle, sampling can be performed directly, ensuring the stability and accuracy of the sampling and avoiding sampling failures caused by relying on experience or other reasons.

[0035] To ensure that the sliding pin 102 remains stable and provides a certain level of support after the slot and pin are engaged, such as... Figure 1 As shown, the front end of the housing 1 is symmetrically provided with first sliding grooves 105 on both sides, and the sliding pillar 102 is symmetrically provided with sliding wings 1022 on both sides. The sliding wings 1022 can slide back and forth along the first sliding grooves 105. The first slot 103 and the second slot 104 are provided on the first sliding grooves 105 and are offset on both sides of the housing 1. The sliding wings 1022 are correspondingly offset with the first locking post 1023 and the second locking post 1024.

[0036] To indicate different gear positions, windows can be set on the upper or lower side of the front of the housing 1, and different markings can be set on the slide post 102, such as "gear 1" and "gear 2". When the slide post matches the first slot 103, the marking "gear 1" can be seen from the window, and when the slide post matches the second slot 104, the marking "gear 2" can be seen from the window, which facilitates the use of the tool.

[0037] Alternatively, a marker can be set on the sliding column 102, and two windows can be set on the housing. The windows can be labeled "Level 1" and "Level 2". When the marker can be observed from the first window, it is Level 1, and when the marker can be observed from the second window, it is Level 2.

[0038] like Figure 4 As shown, both the first locking post 1023 and the second locking post 1024 are L-shaped, and their lower outer ends are provided with slopes, which facilitates pushing the first locking post 1023 or the second locking post 1024 upwards to release the engagement between the locking slot and the locking post when in use.

[0039] Furthermore, a spring is provided between the rear end of the sliding column 102 and the first sliding cavity 101. Specifically, the rear end of the sliding column 102 can be hollowed out, and the spring can be placed between the rear end of the sliding column 102 and the first sliding cavity 101 to improve the stability of the engagement between the slot and the column. After the engagement between the slot and the column is released, the sliding column 102 can automatically return to its original position.

[0040] Furthermore, such as Figure 2 As shown, a second sliding cavity 106 is provided at the rear of the housing 1, and a first slider 107 is provided inside the second sliding cavity 106. A handle 4 is provided at the rear end of the housing 1. The tail end of the needle sleeve 2 is fixed on the first slider 107. The tail end of the sampling needle 3 passes through the first slider 107 and is fixed on the handle 4. A second sliding groove 1071 is provided at both the upper and lower ends of the first slider 107 along its length direction. Pull bars 401 are symmetrically provided at both the upper and lower ends of the handle 4. A first locking block 402 is provided at the front end of the pull bar 401. The first locking block 402 can slide back and forth along the second sliding groove 1071. A stop bar 1072 is provided at the rear end of the second sliding groove 1071. A first locking seat 1073 and a second locking seat 1074 are arranged sequentially from front to back on the second sliding groove 1071. Both the first locking seat 1073 and the second locking seat 1074 include two second locking blocks, which are symmetrically arranged on both sides of the second sliding groove 1071. The housing 1 has symmetrically arranged spring pieces 108 on its upper and lower sides. The inner side of the spring piece 108 has a buckle 1081 for cooperating with the first card holder 1073 and the second card holder 1074. The buckle 108 has a notch corresponding to the second sliding groove 1071, and the bottom surface of the notch gradually rises from back to front. A spring is arranged between the rear end of the first slider 107 and the second sliding cavity 106.

[0041] In use, pulling the handle 4 backward causes the first locking block 402 to slide backward along the second sliding groove 1071. When the first locking block 402 is blocked by the stop bar 1072, continuing to pull backward causes the first slider 107 to slide within the second sliding cavity 106. When the buckle 1081 engages with the first card holder 1073 and the second card holder 1074 respectively, the sampling needle can be adjusted to different positions. During sampling, pushing the handle 4 forward causes the first locking block 402 to pass through the notch of the buckle 108. As the bottom surface of the notch gradually rises from back to front, pushing the handle 4 forward further pushes up the spring 108, causing the card holder and buckle to disengage. Under the action of the spring, at the moment of disengagement, the first slider 107 pops out, causing the needle sleeve 2 to pop out, cutting off the tumor tissue located in the sampling groove, thus completing the sampling.

[0042] Furthermore, such as Figure 8 As shown, the front end of the buckle 1081 is beveled, and the rear end is vertical; as Figure 5 As shown, the front end of the second locking block is a vertical surface, and the rear end is an inclined surface. This reduces the resistance when the first slider 107 is pulled back, and facilitates the release and engagement of the latch and the locking seat.

[0043] Furthermore, such as Figure 2 As shown, a silicone pad 5 is provided between the front end of the first slider 107 and the second sliding cavity 106, which can buffer the popped-out first slider 107.

[0044] Furthermore, the front end of the pull bar 401 is provided with a notch, and a stopper 6 is provided inside the housing 1. One side of the stopper 6 is provided with a stop block 601 that cooperates with the notch on the pull bar 401, and the other side is provided with a second slider 602. A sliding hole 109 is provided on the bottom surface of the housing 1 near the tail end. The second slider 602 protrudes from the sliding hole 109 to the surface of the housing 1 and can slide up and down along the sliding hole 109.

[0045] During sampling, since one end of the sampling needle 3 is fixedly connected to the handle 4, pushing the handle 4 forward is actually the process of inserting the sampling groove into the tumor for sampling. However, during use, sometimes it may be necessary to push out the sampling needle 3 and fix it in a state where the slide bar 102 is about to be activated but has not yet been activated. At this time, the direction and position of the sampling groove can be adjusted. Therefore, a stopper 6 is provided. The second slider 602 on one side of the stopper 6 can slide up and down the slide hole 109. When the handle 4 is pushed, the second slider 602 is located on the upper side of the slide hole 109, and the stopper 601 is away from the notch on the pull bar 401. The handle 4 can move back and forth. When it is necessary to fix the position of the sampling needle 3, the second slider 602 can be pushed down, which will cause the stopper 601 to engage with the notch of the pull bar 401, thereby fixing the pull bar 401 and thus fixing the sampling needle 3.

[0046] Furthermore, such as Figure 1 As shown, handles 7 are symmetrically arranged on the side of the housing 1 to facilitate the use of the biopsy gun.

[0047] Furthermore, a gyroscope, a Bluetooth module, and a power module are also provided inside the first sliding cavity 101, and the gyroscope and the Bluetooth module are electrically connected to the power module respectively.

[0048] A gyroscope, a Bluetooth module, and a power module are installed within the first sliding cavity 101. The gyroscope is used to pick up the angle between the puncture needle and a set reference plane; the Bluetooth module is used for wireless communication, transmitting the detected angle information to a mobile phone, host computer, or tablet computer; and the power module supplies power to the gyroscope and Bluetooth module. By integrating the gyroscope, Bluetooth module, and power module within the first sliding cavity 101, the puncture angle of the biopsy gun can be detected in real time, ensuring more accurate and reliable puncture sampling.

[0049] Furthermore, the gyroscope and Bluetooth module are integrated on the circuit board, located on one side of the first sliding cavity 101, while the power module is located on the other side, which balances the weight on both sides. A microswitch 8 is located on the upper side of the housing 1 corresponding to the position of the first sliding cavity 101. The microswitch 8 is electrically connected to the circuit board and is used to control the opening and closing of the smart module. The location of the microswitch 8 is as follows: Figure 9 As shown.

[0050] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A semi-automatic biopsy gun with built-in angle display, characterized in that, The device includes a housing, a needle sheath, and a sampling needle. The front part of the housing is provided with a first sliding cavity, and a sliding column is provided in the first sliding cavity. The sliding column is sleeved on the needle sheath and can move back and forth along the needle sheath. The front end of the sliding column is provided with a protrusion adapted to the coaxial needle, and the side of the sliding column is provided with a locking post. A first locking groove and a second locking groove are provided on the housing. When the locking post matches the first locking groove, the front end of the sliding column extends out of the housing by a first length. When the locking post matches the second locking groove, the front end of the sliding column extends out of the housing by a second length.

2. The semi-automatic biopsy gun with built-in angle display according to claim 1, characterized in that, The front end of the housing is symmetrically provided with first sliding grooves on both sides, and the sliding pillar is symmetrically provided with sliding wings on both sides. The sliding wings can slide back and forth along the first sliding grooves. The first slot and the second slot are provided on the first sliding grooves and are offset on both sides of the housing. The sliding wings are correspondingly offset with the first locking post and the second locking post.

3. The semi-automatic biopsy gun with built-in angle display according to claim 2, characterized in that, Both the first and second locking posts are L-shaped, and their lower outer ends are provided with bevels.

4. The semi-automatic biopsy gun with built-in angle display according to claim 3, characterized in that, The rear part of the housing is provided with a second sliding cavity, and a first slider is provided in the second sliding cavity. A handle is provided at the rear end of the housing. The tail end of the needle sheath is fixed on the first slider. The tail end of the sampling needle passes through the first slider and is fixed on the handle. The first slider has a second slide groove at both ends along its length. The handle has a pull bar symmetrically arranged at both ends. The front end of the pull bar has a first locking block that can slide back and forth along the second slide groove. The rear end of the second slide groove has a stop bar. The second slide groove is provided with a first card seat and a second card seat from front to back. Both the first card seat and the second card seat include two second card blocks, which are symmetrically arranged on both sides of the second slide groove. The housing is symmetrically provided with spring pieces on the upper and lower sides. The inner side of the spring pieces is provided with a buckle for cooperating with the first card seat and the second card seat. The buckle is provided with a notch in the middle corresponding to the second sliding groove. The bottom surface of the notch gradually rises from back to front. A spring is provided between the rear end of the first slider and the second sliding cavity.

5. The semi-automatic biopsy gun with built-in angle display according to claim 4, characterized in that, The front end of the buckle is beveled, and the rear end is vertical.

6. The semi-automatic biopsy gun with built-in angle display according to claim 5, characterized in that, The front end of the second card block is a vertical surface, and the rear end is a sloped surface.

7. The semi-automatic biopsy gun with built-in angle display according to claim 6, characterized in that, A silicone pad is provided between the front end of the first slider and the second sliding cavity.

8. The semi-automatic biopsy gun with built-in angle display according to claim 7, characterized in that, The front end of the pull bar has a notch, and a stopper is provided inside the housing. One side of the stopper has a blocking block that matches the notch on the pull bar, and the other side has a second slider. A sliding hole is provided on the bottom surface of the housing near the tail end. The second slider protrudes from the sliding hole to the surface of the housing and can slide up and down along the sliding hole.

9. The semi-automatic biopsy gun with built-in angle display according to claim 8, characterized in that, A first spring is provided between the rear end of the sliding column and the first sliding cavity.

10. The semi-automatic biopsy gun with built-in angle display according to claim 9, characterized in that, The first sliding cavity is also equipped with a gyroscope, a Bluetooth module and a power module, and the gyroscope and the Bluetooth module are electrically connected to the power module respectively.

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