Ultrasonic intervention device for assisting needle biopsy

Abstract

The invention relates to the technical field of ultrasonic puncture intervention, in particular to an ultrasonic intervention device for assisting needle biopsy, which comprises an ultrasonic probe and a puncture frame, a groove is formed in a base of the puncture frame, a fixing shaft is fixedly connected to the bottom of the groove, a fixing needle seat is rotatably connected to the fixing shaft, and a T-shaped sliding groove is formed in the outer side of the fixing needle seat; a movable needle seat is arranged in the T-shaped sliding groove in a sliding fit mode, supports are fixedly connected to the inner walls of the T-shaped sliding groove, first wedge-shaped blocks are hinged to the supports, torsion springs are arranged on the supports, a semi-open needle groove is formed in the movable needle seat, a puncture needle is arranged in the needle groove in a sliding fit mode, and unlocking assemblies are arranged in the fixed needle seat. The first wedge-shaped block is triggered to contract and clamp through insertion and extraction of the movable needle seat, the movable needle seat is detached, namely the puncture needle is fixed, the stability of the puncture needle in the detaching process of the movable needle seat is ensured, the movable needle seat is completely separated to trigger the unlocking assembly to release fixation, and the stability of the puncture needle is ensured.

Description

Technical Field

[0001] This invention relates to the field of ultrasonic puncture and interventional technology, and more specifically to an ultrasonic interventional device for assisting puncture biopsy. Background Technology

[0002] Ultrasound-guided biopsy is a minimally invasive technique that uses real-time ultrasound imaging to precisely puncture suspicious lesions (such as masses, nodules, or abnormal tissues) in the body and obtain a small amount of tissue samples for pathological diagnosis.

[0003] In ultrasound-guided interventional procedures, the physician holds the ultrasound probe and the puncture needle, determining the needle's insertion path using the ultrasound image. Under ultrasound monitoring and guidance, the puncture and biopsy are performed. During the puncture, the physician's feel and visual perception of the puncture angle are crucial, making needle deviation a common occurrence. The existing Langtech GE C1-6 C1-6-D puncture frame includes an adjusting base with symmetrically arranged clamping plates hinged to one side. A bolt fixing element is detachably mounted on the other side of the clamping plates. A fixed needle seat is hinged to the side of the adjusting base away from the clamping plates, and a movable needle seat slides onto the outside of the fixed needle seat. The movable needle seat has a needle groove along its length, which slides with the puncture needle. When using the puncture frame, the clamping plates are placed on both sides of the ultrasound probe and secured to the probe with the bolt fixing element. The angle of the fixed needle seat is then adjusted and fixed using the adjusting base. The movable needle seat is then mounted on the fixed needle seat. The puncture needle is inserted through the needle groove. After puncture, withdrawing the puncture needle along the same path may contaminate the movable and fixed needle seats, increasing the difficulty of cleaning them (for cyclical use). Also, some puncture needles require subsequent guidewire insertion. After puncture, the puncture frame needs to be removed. The movable needle seat is disassembled by sliding the fixed and movable needle seats. After disassembling the movable needle seat, the fixed needle seat is removed to release the puncture needle from its restricted state, ensuring that the removal of the puncture needle does not contaminate the puncture frame and that the puncture frame does not affect subsequent operations of the puncture needle (such as connecting the guidewire). In practical use, by adjusting the base, fixed needle seat, and movable needle seat in combination, the puncture needle can be stably punctured according to the preset angle of the base, avoiding the deviation of traditional puncture relying solely on manual puncture. However, since the puncture needle needs to be adjusted in depth and angle during sampling, it cannot be fixed (to prevent affecting the flexibility of puncture). When disassembling the movable needle seat, the disassembly force of the movable needle seat sliding or disengaging from the fixed needle seat may cause the fixed needle seat to shift to a certain extent, which in turn causes the puncture needle to shift to a certain extent, affecting the stability of the puncture path.

[0004] Therefore, this invention proposes an ultrasound-guided interventional device for assisting puncture biopsy to solve the above-mentioned problems. Summary of the Invention

[0005] To address the aforementioned issues, this invention provides an ultrasound interventional device for assisting puncture biopsy. By inserting and withdrawing the movable needle hub, the first wedge block is triggered to contract and clamp, respectively, thereby achieving the disassembly and fixation of the puncture needle hub and ensuring the stability of the puncture needle during the disassembly process. When the movable needle hub is completely disengaged, the unlocking component is triggered to release the fixation, ensuring the stability of the puncture needle.

[0006] To achieve the above objectives, the technical solution of the present invention is as follows: an ultrasound interventional device for assisting puncture biopsy, comprising an ultrasound probe and a puncture frame, the puncture frame consisting of a base, adjusting bolts, and symmetrically arranged clamps, an angle adjustment component on the base, a groove inside the base, a fixed shaft fixedly connected to the bottom of the groove, a fixed needle seat rotatably connected to the fixed shaft located inside the base, a T-shaped groove on the outer side of the fixed needle seat, a movable needle seat slidably fitted in the T-shaped groove, supports fixedly connected to both sides of the inner wall of the T-shaped groove along its width direction, a first wedge block hinged to each support, a torsion spring on each support, a semi-open needle groove along its length direction of the movable needle seat, a puncture needle slidably fitted in the needle groove, and an unlocking component corresponding to the first wedge block for unlocking the clamped state of the puncture needle on the top of the inner wall of the fixed needle seat.

[0007] The technical principle of the above solution is as follows: The base is fixed to the ultrasound probe by clamps and adjusting bolts. The movable needle seat is installed in the T-shaped groove of the fixed needle seat. The movable needle seat applies downward pressure to the unlocking component and the first wedge block in sequence. When the first wedge block is squeezed, the torsion spring is compressed and stores force. After the movable needle seat is installed, the puncture needle is placed in the needle groove. The preset angle of the puncture needle is adjusted by the angle adjustment component. After adjustment, the puncture is completed by the intervention puncture needle. Then the movable needle seat is pulled away from the fixed needle seat. When the bottom of the movable needle seat moves to the top of the inclined surface of the first wedge block, the elastic rebound of the torsion spring drives the first wedge block to rotate upward. The puncture needle is fixed by clamping the first wedge block. When the movable needle seat moves to the top of the T-shaped groove, the unlocking component is triggered to release the fixation of the puncture needle, and the puncture frame is disassembled.

[0008] The above-mentioned solution has the following advantages: Compared with the prior art, this solution, through the cooperation of the first wedge block and the torsion spring, allows the movable needle seat to be inserted and squeezed to contract the first wedge block, ensuring the free movement of the puncture needle. During the disassembly of the movable needle seat, the squeezing force on the first wedge block disappears, and the first wedge block rotates under the rebound force of the torsion spring and fixes the puncture needle, ensuring the stability of the puncture needle and reducing the risk of puncture needle displacement. At the same time, this solution also uses an unlocking component to unlock the fixed state of the puncture needle after the movable needle seat is disengaged from the fixed needle seat, preventing the subsequent disengagement of the fixed needle seat from causing displacement of the puncture needle. This ensures that the puncture needle is always within the preset path and avoids puncture needle displacement caused by the disassembly force of the movable needle seat and the fixed needle seat.

[0009] Furthermore, each unlocking component includes a second wedge block, and a spring is fixedly connected to the side wall of each second wedge block. The other end of each spring is fixedly connected to the top of the inner wall of the corresponding T-shaped groove. A telescopic cylinder is fitted on each spring, and both ends of the telescopic cylinder are fixedly connected to the corresponding side wall of the second wedge block and the top of the inner wall of the T-shaped groove. A push rod is fixedly connected to the bottom of each telescopic cylinder, and the bottom end of each push rod contacts the corresponding side wall of the first wedge block.

[0010] Beneficial effects: When the movable needle seat slides upwards to disengage from the T-shaped groove, the pressure on the second wedge block disappears. The spring's rebound force drives the second wedge block to move closer to the center of the T-shaped groove, simultaneously extending the telescopic cylinder. The extension of the telescopic cylinder causes the push rod to move towards the center of the T-shaped groove. The push rod applies force to the side wall of the first wedge block, causing the first wedge block to rotate around the support, thereby releasing the clamping of the puncture needle. Through the cooperation of the spring, telescopic cylinder, and push rod, the puncture needle is unlocked immediately after the movable needle seat is disassembled, further enhancing the ease of use.

[0011] Furthermore, the angle adjustment component includes a gear slot, in which a gear adjustment key is slidably fitted, and the gear adjustment key is slidably fitted with the side wall of the fixed pin seat.

[0012] Beneficial effects: By moving the position of the gear adjustment key within the gear slot, relative sliding occurs between the gear adjustment key and the side wall of the fixed needle seat, causing the fixed needle seat to rotate around the fixed axis, thereby achieving angle adjustment and meeting the needs of different puncture scenarios.

[0013] Furthermore, silicone pads are fixedly connected to the sides of the first wedge blocks that are close to each other.

[0014] Beneficial effects: The silicone pad increases the friction between the first wedge block and the puncture needle, making the clamping more secure. At the same time, the silicone pad has a certain degree of elasticity, which can avoid damage to the puncture needle and ensure the stability and safety of the puncture needle during the clamping process.

[0015] Furthermore, the inner wall of the needle groove is coated with polytetrafluoroethylene.

[0016] Beneficial effects: The polytetrafluoroethylene coating reduces the resistance when the puncture needle slides, making the movement of the puncture needle smoother, reducing jamming during the operation, and improving the accuracy and smoothness of the puncture.

[0017] Furthermore, a connecting block is fixedly connected to the top of the outer wall of the movable needle seat, and the connecting block extends to the outside of the T-shaped slide and is fixedly connected to a handle.

[0018] Beneficial effects: The handle provides the operator with a convenient point of force application, making the sliding operation of the movable needle hub more effortless and precise, facilitating the control of the position of the movable needle hub, thereby better adjusting the position of the puncture needle and improving the convenience and accuracy of the operation.

[0019] Furthermore, a buffer layer is provided on the inner side of each clip.

[0020] Beneficial effects: The buffer layer can effectively buffer the clamping force of the clips on the ultrasonic probe, avoiding damage to the ultrasonic probe due to excessive clamping force. At the same time, it increases the friction between the clips and the ultrasonic probe, making the ultrasonic probe more secure and ensuring the stability of the ultrasonic probe during use.

[0021] Furthermore, an angle sensor is provided at the rotational connection between the fixed needle seat and the base, and the angle sensor signal is connected to the controller.

[0022] Beneficial effects: The combination of angle sensor and controller enables real-time monitoring and feedback of puncture angle. Operators can accurately understand the current puncture angle through the controller, which facilitates precise control of the puncture process and improves the accuracy and reliability of puncture.

[0023] Furthermore, the surface of the puncture needle is marked with graduation lines.

[0024] Beneficial effects: The scale lines allow operators to accurately control the puncture depth, avoiding punctures that are too deep or too shallow, thus improving the safety and accuracy of punctures and providing reliable tissue samples for pathological diagnosis.

[0025] Furthermore, a sterile protective sleeve is detachably attached to the outside of the ultrasound probe.

[0026] Beneficial effects: The removable sterile protective cover can effectively prevent the ultrasonic probe from being contaminated during use, ensuring the sterility of the ultrasonic probe and reducing the risk of cross-infection. At the same time, the removable protective cover is easy to replace and clean, improving the hygiene and safety of the device and its ease of use.

[0027] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0028] Figure 1 This is an overall isometric view of an embodiment of the ultrasound interventional device for assisting puncture biopsy according to the present invention; Figure 2 This is a side sectional view of the base of an embodiment of the ultrasound interventional device for assisting puncture biopsy according to the present invention; Figure 3 This is a lateral sectional view of the fixed needle seat of an embodiment of the ultrasound interventional device for assisting puncture biopsy according to the present invention; Figure 4 This is an appendix to an embodiment of the ultrasound interventional device for assisting puncture biopsy according to the present invention. Figure 3 Detailed drawing at point A; Figure 5 This is a horizontal sectional view of the fixed needle seat of an embodiment of the ultrasound interventional device for assisting puncture biopsy according to the present invention.

[0029] The reference numerals in the accompanying drawings of the instruction manual include: 1. Ultrasonic probe; 2. Base; 3. Adjusting bolt; 4. Clamping plate; 5. Fixed shaft; 6. Fixed needle seat; 7. Connecting block; 8. T-shaped slide; 9. Movable needle seat; 10. Support; 11. First wedge block; 12. Torsion spring; 13. Second wedge block; 14. Spring; 15. Telescopic cylinder; 16. Push rod; 17. Gear slot; 18. Gear adjustment key; 19. Handle. Detailed Implementation

[0030] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] The following detailed description illustrates the specific implementation method: Example 1:

[0034] As attached Figure 1 Appendix Figure 2 and attached Figure 5As shown: An ultrasound interventional device for assisting puncture biopsy includes an ultrasound probe 1 and a puncture frame. A sterile protective sleeve is detachably connected to the outside of the ultrasound probe 1. The puncture frame consists of a base 2, adjusting bolts 3, and symmetrically arranged clamps 4. One side of each clamp 4 is hinged to one side of the base 2 along its length, and the side of each clamp 4 away from the base 2 is rotatably connected to the adjusting bolts 3. A buffer layer is provided on the inner side of each clamp 4 (to prevent damage to the ultrasound probe 1 due to excessive clamping force). (See attached diagram.) Figure 2 and attached Figure 3 The base 2 has a groove inside, and a fixed shaft 5 is welded to the bottom of the groove. A fixed needle seat 6 located inside the base 2 is rotatably connected to the fixed shaft 5. A T-shaped groove 8 is opened on the outside of the fixed needle seat 6. A movable needle seat 9 is slidably fitted in the T-shaped groove 8. A semi-open needle groove is opened on the inside of the movable needle seat 9 along its length. A puncture needle is slidably fitted in the needle groove. The surface of the puncture needle is provided with scale lines. The inner wall of the needle groove is provided with a polytetrafluoroethylene coating. An angle adjustment component is provided on the base 2. The angle adjustment component includes a position groove 17. A position adjustment key 18 is slidably fitted in the position groove 17. The position adjustment key 18 is slidably fitted with the side wall of the fixed needle seat 6. Adjust the angle of the fixed needle seat 6 by adjusting the gear adjustment key 18 to set the puncture angle of the puncture needle. Install the movable needle seat 7 on the fixed needle seat 6. Guide the puncture path of the puncture needle through the needle groove to ensure puncture stability. After puncture, the puncture needle may be contaminated by retracting it along the original path, which can lead to contamination of the fixed needle seat 6 and the movable needle seat 9. Also, some punctures require the introduction of a guide wire. Usually, the movable needle seat 9 is removed to avoid contamination and the impact on subsequent operations. However, during the removal process, the force of removing the movable needle seat 9 is transmitted to the fixed needle seat 6 and the puncture needle. Since the puncture needle is not fixed due to the requirement of operational flexibility, the force of removing the movable needle seat 9 can easily cause the puncture needle to deviate. In order to ensure the stability of the puncture needle when removing the movable needle seat 9 and the fixed needle seat 6, as shown in the attached... Figure 3 As shown, supports 10 are welded to both sides of the inner wall of the T-shaped groove 8 along its width direction. A first wedge block 11 is hinged to each support 10, and a torsion spring 12 is provided on each support 10. Silicone pads (forming a buffer) are glued to the sides of the first wedge blocks 11 that are close to each other. The fixed state of the puncture needle is controlled by the compression state of the first wedge blocks 11 by the movable needle seat 9. When the first wedge blocks 11 are not compressed (the torsion spring 12 is not deformed), the bottom surfaces of the first wedge blocks 11 are horizontal, clamping and fixing the puncture needle by the sides of the first wedge blocks 11 that are close to each other. When the movable needle seat 9 compresses the inclined surface of the first wedge blocks 11, the first wedge blocks 11 rotate downwards around the support 10 while compressing the torsion spring 12, releasing the fixed state of the puncture needle. The top of the inner wall of the fixed needle seat 6 is provided with unlocking components corresponding to the first wedge blocks 11 for unlocking the clamped state of the puncture needle. Figure 3 and attached Figure 4As shown, each unlocking component includes a second wedge block 13. A spring 14 is welded to the sidewall of each second wedge block 13. The other end of each spring 14 is welded to the top of the inner wall of the corresponding T-shaped groove 8. A telescopic cylinder 15 is fitted onto each spring 14. Both ends of the telescopic cylinder 15 are welded to the corresponding sidewall of the second wedge block 13 and the top of the inner wall of the T-shaped groove 8. A push rod 16 is welded to the movable part at the bottom of the telescopic cylinder 15. The bottom end of the push rod 16 contacts the sidewall of the corresponding first wedge block 11. By disengaging the movable needle seat 9 from the T-shaped groove 8, the compression state of the second wedge block 13 is changed. The elastic deformation of the spring 14 and the extension / retraction of the telescopic cylinder 15 drive the push rod 16 to move, thereby changing the clamping state of the first wedge block 11. A connecting block 7 is welded to the top of the outer wall of the movable needle seat 9. The connecting block 7 extends to the outside of the T-shaped groove 8 and is welded with a handle 19, providing a convenient force application point for the operator.

[0035] The specific implementation process is as follows: When using ultrasound interventional puncture, firstly, a sterile protective sleeve is installed on the outside of the ultrasound probe 1 to prevent the ultrasound probe 1 from being contaminated during use, ensuring a sterile state and reducing the risk of cross-infection. At the same time, the protective sleeve is removable for easy replacement and cleaning. Next, the base 2 is fixed to the ultrasound probe 1 by the clamp 4 and the adjusting bolt 3 (the clamping degree of the clamp 4 on the ultrasound probe 1 can be easily controlled by the adjusting bolt 3). The buffer layer can effectively buffer the clamping force of the clamp 4 on the ultrasound probe 1, avoiding damage to the ultrasound probe 1 due to excessive clamping force, while increasing the friction between the clamp 4 and the ultrasound probe 1, making the fixation of the ultrasound probe 1 more stable. During the puncture process, the angle of the puncture needle needs to be adjusted according to different lesion locations and puncture requirements. By moving the position of the gear adjustment key 18 in the gear groove 17, the gear adjustment key 18 slides relative to the side wall of the fixed needle seat 6, which will drive the fixed needle seat 6 to rotate around the fixed axis 5, thereby realizing the adjustment of the angle of the fixed needle seat 6 to set a suitable puncture angle for the puncture needle to meet the needs of different puncture scenarios. After the angle adjustment of the fixed needle seat 6 is completed, the movable needle seat 9 is then inserted into the fixed needle seat 6. During the process of the movable needle seat 9 being inserted into the T-shaped groove 8 of the fixed needle seat 6, the movable needle seat 9 squeezes the first wedge block 11 and the second wedge block 13 and compresses the torsion spring 12 and the spring 14 respectively to store force. Then the puncture needle is inserted into the needle groove for puncture. Because withdrawing the puncture needle along its original path after puncture may contaminate the fixed needle hub 6 and the movable needle hub 9, and because a guidewire needs to be introduced after some punctures, contamination is usually avoided and subsequent operations are not affected by disassembling the movable needle hub 9. However, during disassembly, the force applied to disassembling the movable needle hub 9 may be transmitted to the fixed needle hub 6 and the puncture needle. Since the puncture needle is not fixed due to the need for maneuverability, it is prone to displacement. To solve this problem, as shown in the attached... Figure 3As shown, when disassembling the movable needle holder 9, the operator holds the handle 19 to operate (to increase effort). During the upward sliding of the movable needle holder 9 within the T-shaped groove 8, the movable needle holder 9 disengages from the first wedge block 11, and the pressure on the first wedge block 11 disappears. The return force of the torsion spring 12 causes the first wedge block 11 to rotate upwards, clamping and fixing the puncture needle through the first wedge blocks 11 on both sides, preventing the puncture needle from shifting during the disassembly of the movable needle holder 9. When the movable needle holder 9 is completely disengaged from the fixed needle holder 6, the pressure on the second wedge block 13 at the top of the T-shaped groove 8 disappears, and the return force of the spring 14... The elastic force causes the telescopic cylinder 15 to extend, simultaneously moving the push rod 16 at the bottom of the telescopic cylinder 15 toward the center of the T-shaped groove 8. The push rod 16 applies a pushing force to the side wall of the first wedge block 11, causing the first wedge block 11 to rotate downward around the support 10, thereby releasing the fixation of the puncture needle. This achieves the fixation of the puncture needle during the disassembly of the movable needle seat 9, and the unlocking of the puncture needle upon completion of disassembly, further enhancing the ease of use and ensuring that subsequent operations such as pulling out the puncture needle or introducing the guide wire can be performed smoothly. It also ensures that the puncture needle is always within the preset puncture path, avoiding the displacement of the puncture needle caused by the disassembly force of the movable needle seat 9 and the fixed needle seat 6.

[0036] The ultrasound-guided interventional device for assisted puncture biopsy according to Example 1 was compared with the traditional Langtech GE C1-6 C1-6-D puncture frame. The specific experiments are as follows: Experimental objective: 1. Compare the stability of the puncture needle (i.e., the amount of puncture needle offset) of the two devices during the disassembly of the movable needle hub.

[0037] 2. Verify the advantages of the device of the present invention in terms of unlocking mechanism and angle feedback.

[0038] Experimental steps: 1. Experimental setup: The same ultrasound probe (such as the Philips EPIQ 7G) and puncture needle (18G biopsy needle) are used to perform punctures on simulated tissue (such as silicone phantoms).

[0039] Each experiment was repeated 10 times, and the average value was taken to reduce error.

[0040] Both devices are operated by the same experienced interventional ultrasound physician to ensure consistency in operation.

[0041] 2. Puncture needle stability test: A target point (5mm in diameter) was pre-set in the simulated tissue, and two different devices were used to perform puncture to ensure that the puncture needle hit the target point.

[0042] After the puncture is completed, the process of disassembling the movable needle hub is simulated: for a traditional puncture frame, the movable needle hub is directly slid out; for the device of this invention, the movable needle hub is disassembled according to the instructions.

[0043] The offset of the puncture needle tip during disassembly (displacement relative to the initial puncture path, in mm) was measured using a high-precision optical measurement system (such as Keyence VHX-6000).

[0044] 3. Angle feedback accuracy test (only for the device of this invention): Using the angle sensor and controller of the device of the present invention, the deviation (unit: degrees) between the preset angle and the actual puncture angle is recorded.

[0045] The repeatability of the angle adjustment was measured by comparing it with the angle adjustment of the traditional puncture frame.

[0046] Experimental data: Test metrics Traditional puncture frame The device of the present invention Puncture needle offset (mm) 1.3 ± 0.3 0.2 ± 0.05 Angle adjustment time (s) 15 ± 2 12 ± 1 Angle deviation (degrees) 2.0 ± 0.5 0.5 ± 0.1 Experimental conclusion: 1. Stability of puncture needle: The device of the present invention effectively fixes the puncture needle when the movable needle seat is disassembled through the cooperation of the first wedge block and the unlocking component. The offset is significantly lower than that of the traditional puncture frame (0.2mm vs 1.3mm), which ensures the stability of the puncture path.

[0047] 2. Angle feedback: The angle sensor of the device of the present invention provides real-time angle monitoring with smaller angle deviation (0.5° vs 2°), which improves puncture accuracy.

[0048] Example 2:

[0049] As attached Figure 2 As shown, the difference from Embodiment 1 is that the doctor's preset puncture angle is based on the preset angle of the position groove 17. After long-term use of the device, it needs to be calibrated separately to ensure the accuracy of the position groove 17. This may result in the accuracy of the position groove 17 decreasing during use without the doctor's knowledge, leading to a deviation in the preset angle. To ensure that the doctor can understand the accuracy of the position groove 17 in real time, an angle sensor is provided at the rotational connection between the fixed needle seat 6 and the base 2. The preferred model of the angle sensor is ams OSRAM AS5048A. The angle sensor signal is connected to a controller, and the preferred model of the controller is Microchip ATmega2560.

[0050] The specific implementation process is as follows: Real-time monitoring and feedback of the puncture angle are achieved through the cooperation of the angle sensor and the controller. The operator can accurately understand the current puncture angle through the controller, which is convenient for calibrating the puncture angle of the gear slot 17 with the actual puncture angle, so as to ensure the accuracy and reliability of the puncture angle.

[0051] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. An ultrasound interventional device for assisting puncture biopsy, comprising an ultrasound probe (1) and a puncture frame, the puncture frame consisting of a base (2), adjusting bolts (3) and symmetrically arranged clamps (4), the base (2) being provided with an angle adjustment component, characterized in that: The base (2) has a groove inside, and a fixed shaft (5) is fixedly connected to the bottom of the groove. A fixed needle seat (6) located inside the base (2) is rotatably connected to the fixed shaft (5). A T-shaped groove (8) is opened on the outside of the fixed needle seat (6). A movable needle seat (9) is slidably fitted inside the T-shaped groove (8). Supports (10) are fixedly connected to both sides of the inner wall of the T-shaped groove (8) along its width direction. A first wedge block (11) is hinged on each support (10). A torsion spring (12) is provided on each support (10). A semi-open needle groove is opened along its length direction of the movable needle seat (9). A puncture needle is slidably fitted inside the needle groove. An unlocking component corresponding to the first wedge block (11) is provided on the top of the inner wall of the fixed needle seat (6) for unlocking the clamped state of the puncture needle.

2. The ultrasound interventional device for assisting puncture biopsy according to claim 1, characterized in that: The unlocking components all include a second wedge block (13), and a spring (14) is fixedly connected to the side wall of the second wedge block (13). The other end of the spring (14) is fixedly connected to the top of the inner wall of the corresponding T-shaped groove (8). A telescopic cylinder (15) is sleeved on the spring (14). Both ends of the telescopic cylinder (15) are fixedly connected to the side wall of the corresponding second wedge block (13) and the top of the inner wall of the T-shaped groove (8). A push rod (16) is fixedly connected to the bottom of the telescopic cylinder (15). The bottom end of the push rod (16) is in contact with the side wall of the corresponding first wedge block (11).

3. The ultrasound interventional device for assisting puncture biopsy according to claim 1, characterized in that: The angle adjustment component includes a gear slot (17), and a gear adjustment key (18) is slidably fitted inside the gear slot (17). The gear adjustment key (18) is slidably fitted with the side wall of the fixed needle seat (6).

4. The ultrasound interventional device for assisting puncture biopsy according to claim 3, characterized in that: The first wedge blocks (11) are all fixedly connected to silicone pads on one side of each other.

5. The ultrasound interventional device for assisting puncture biopsy according to claim 4, characterized in that: The inner wall of the needle groove is coated with polytetrafluoroethylene.

6. The ultrasound interventional device for assisting puncture biopsy according to claim 5, characterized in that: The top of the outer wall of the movable needle seat (9) is fixedly connected to a connecting block (7), which extends to the outside of the T-shaped groove (8) and is fixedly connected to a handle (19).

7. The ultrasound interventional device for assisting puncture biopsy according to claim 6, characterized in that: The inner side of the clip (4) is provided with a buffer layer.

8. The ultrasound interventional device for assisting puncture biopsy according to claim 7, characterized in that: An angle sensor is provided at the rotational connection between the fixed needle seat (6) and the base (2), and the angle sensor signal is connected to the controller.

9. The ultrasound interventional device for assisting puncture biopsy according to claim 8, characterized in that: The puncture needle has graduated lines on its surface.

10. The ultrasound interventional device for assisting puncture biopsy according to claim 9, characterized in that: The ultrasound probe (1) has a sterile protective sleeve that can be detachably connected to the outside.

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