Ultrasound navigation assisted thyroid fine needle biopsy fixation device

Abstract

This invention relates to the field of thyroid fine needle technology, specifically to an ultrasound-guided fixation device for thyroid fine needle puncture. The device includes a fixation mechanism comprising a probe clamp, a graduated dial on one side of a connecting plate, and a needle guide plate fixedly connected to one side of the connecting plate. It also includes an adjustment mechanism for adjusting the diameter of the needle guide port on the needle guide plate, and a positioning mechanism for improving the stability of the adjustment mechanism. When adjusting the diameter, pulling or pushing the lever rotates the rotating ring. Its arc-shaped guide groove forces the three moving columns and clamping plates to converge inwards or expand outwards synchronously. The variable needle channel formed by the three flexible plates shrinks or expands accordingly, thereby achieving adaptive clamping and guidance for puncture needles of different outer diameters. This allows for stepless adjustment of the needle channel diameter, eliminating the need to replace the entire device to accommodate different needle models and avoiding damage to tissues or equipment caused by forcibly expanding the needle channel during surgery.

Description

Technical Field

[0001] This invention relates to the field of thyroid fine needle technology, specifically to a thyroid fine needle puncture ultrasound-guided assisted fixation device. Background Technology

[0002] The thyroid fine-needle aspiration ultrasound-guided fixation device is a professional medical device used in the process of thyroid nodule or lesion fine-needle aspiration biopsy. Under the guidance of real-time ultrasound imaging, it can accurately fix the angle and depth of the puncture needle, reduce the shaking or deviation caused by manual operation, shorten the operation time, reduce patient discomfort, and improve the success rate and diagnostic reliability of cytological sampling. It is especially suitable for small nodules or lesions located deep in the body.

[0003] Currently, the guide needle channel diameter of existing ultrasound-guided fixation devices for fine-needle aspiration of thyroid needles is usually fixed, making it difficult to accommodate puncture needles of different outer diameters. Consequently, when different needle models need to be changed, the entire device needs to be replaced or the needle channel needs to be expanded during the procedure, which can easily damage the structure. Summary of the Invention

[0004] The purpose of this invention is to provide an ultrasound-guided fixation device for thyroid fine needle puncture, which solves the problem that the guide needle channel diameter groove is usually fixed, making it difficult to accommodate puncture needles with different outer diameters.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A fine-needle aspiration ultrasound-guided assisted fixation device for thyroid glands includes a fixation device comprising a probe clamp, a connecting block fixedly connected to one side of the probe clamp, a hinge rod extending through the connecting block away from the probe clamp and rotatably connected to the connecting block, a connecting plate fixedly connected to one side of the hinge rod, a scale dial provided on one side of the connecting plate, and a needle guide plate fixedly connected to one side of the connecting plate; it also includes an adjustment device for adjusting the diameter of the needle guide port on the needle guide plate; and a positioning device for improving the stability of the adjustment device.

[0006] Preferably, the adjusting device includes a pull rod, a rotating ring fixedly connected to one side of the pull rod, a movable column slidably connected to the surface of the rotating ring, a slider fixedly connected to the top of the movable column, a fixed ring slidably connected to the surface of the slider, a clamping plate fixedly connected to one side of the slider, and a flexible plate fixedly connected to one side of the clamping plate.

[0007] Preferably, the bottom of the rotating ring is rotatably connected to the inner bottom surface of the needle plate, and the surface of the rotating ring is provided with three arc-shaped guide grooves arranged in a circumferential array along the circumference of the rotating ring. Each arc-shaped guide groove is slidably connected to a corresponding movable column. The top of the fixed ring is fixedly connected to the inner top surface of the needle plate, and the surface of the fixed ring is provided with three sliding grooves arranged in a circumferential array along the circumferential surface of the fixed ring. Each sliding groove is slidably connected to a corresponding slider.

[0008] Preferably, the positioning device includes a positioning plate, a spring A is fixedly connected to the bottom of the positioning plate, a long plate is fixedly connected to the bottom of the spring A, a fixing plate is slidably connected to the surface of the long plate, a spring B is fixedly connected to the bottom of the long plate, a connecting post is fixedly connected to the bottom of the long plate, and a pull plate is fixedly connected to the bottom of the connecting post.

[0009] Preferably, there are several positioning plates arranged in a linear array along the surface of the long plate, and all positioning plates are set on the displacement path of the pull rod, with an inclined surface opened on the side near the pull rod.

[0010] Preferably, the surface of the long plate has the same number of grooves as the positioning plate, and the bottom of each groove is fixedly connected to a corresponding spring A, and the top of each spring A is fixedly connected to the bottom of the corresponding positioning plate. One side of the fixing plate is fixedly connected to one side surface of the needle plate, and a sliding groove is opened on the surface of the fixing plate, and the surface of the long plate is slidably connected in the sliding groove. The side of the spring B away from the long plate is fixedly connected to the bottom surface of the sliding groove opened on the surface of the fixing plate, and the surface of the connecting column slides through the bottom surface of the fixing plate.

[0011] Preferably, one side of the dial is fixedly connected to the surface of the connecting block near the needle plate.

[0012] By employing the above technical solution, the present invention has at least the following beneficial effects: 1. When adjusting the diameter, the present invention pulls or pushes the lever to rotate the rotating ring. Its arc-shaped guide groove forces the three moving columns and clamps to converge inward or expand outward simultaneously. The variable needle channel formed by the three soft plates shrinks or expands accordingly, thereby achieving adaptive clamping and guidance for puncture needles of different outer diameters. This enables stepless adjustment of the needle channel diameter, thus allowing for adaptation to different needle models without replacing the entire device, avoiding damage to tissues or equipment caused by forcibly expanding the needle channel during surgery.

[0013] 2. This invention ensures that the needle tract diameter remains stable throughout the puncture process by pulling the lever to adjust the diameter to decrease. When the lever is pulled to adjust the diameter to decrease, the inclined positioning plates will be pushed open in sequence. The positioning plates will retract and then spring back under the action of springs, forming a one-way lock on the lever to prevent it from retracting on its own. When it needs to be released, the pull plate is pressed down to move all the positioning plates down and out of the path, and the lever can move in the opposite direction. This ensures that the needle tract diameter remains stable throughout the puncture process and avoids puncture deviation or tissue damage caused by unexpected changes in diameter. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the dial in this invention; Figure 3 This is a three-dimensional structural diagram of the rotating ring and the fixed ring in this invention; Figure 4 This is a three-dimensional structural diagram of the movable column and slider in this invention; Figure 5 This is a three-dimensional structural diagram of springs A and B in this invention.

[0016] In the diagram: 1. Fixing device; 101. Probe clamp; 102. Connecting block; 103. Hinge rod; 104. Connecting plate; 105. Dial; 106. Needle plate; 2. Adjusting device; 201. Pull rod; 202. Rotating ring; 203. Moving column; 204. Slider; 205. Fixing ring; 206. Clamping plate; 207. Flexible plate; 3. Positioning device; 301. Positioning plate; 302. Spring A; 303. Long plate; 304. Fixing plate; 305. Spring B; 306. Connecting column; 307. Pull plate. Detailed Implementation

[0017] Preferred embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the invention are shown in the drawings, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0018] A thyroid fine-needle aspiration ultrasound-guided fixation device, such as Figures 1 to 5As shown, the device includes a fixing device 1, which includes a probe clamp 101. A connecting block 102 is fixedly connected to one side of the probe clamp 101. A hinge rod 103 passes through the side of the connecting block 102 away from the probe clamp 101 and is rotatably connected to the connecting block 102. A connecting plate 104 is fixedly connected to one side of the hinge rod 103. A scale 105 is provided on one side of the connecting plate 104. A needle guide plate 106 is fixedly connected to one side of the connecting plate 104. The device also includes an adjusting device 2 for adjusting the diameter of the needle guide opening of the needle guide plate 106; and a positioning device 3 for improving the stability of the adjusting device 2.

[0019] The adjusting device 2 includes a pull rod 201, a rotating ring 202 fixedly connected to one side of the pull rod 201, a moving column 203 slidably connected to the surface of the rotating ring 202, a slider 204 fixedly connected to the top of the moving column 203, a fixed ring 205 slidably connected to the surface of the slider 204, a clamping plate 206 fixedly connected to one side of the slider 204, and a flexible plate 207 fixedly connected to one side of the clamping plate 206. In the above design, the fixed connection between the flexible plate 207 and one side of the clamping plate 206 can provide an elastic buffer contact surface, realizing non-destructive flexible clamping of puncture needles with different outer diameters.

[0020] The bottom of the rotating ring 202 is rotatably connected to the inner bottom surface of the needle plate 106. The surface of the rotating ring 202 is provided with three arc-shaped guide grooves, which are arranged in a circumferential array along the circumference of the rotating ring 202. Each arc-shaped guide groove is slidably connected to a corresponding moving column 203. The top of the fixed ring 205 is fixedly connected to the inner top surface of the needle plate 106. The surface of the fixed ring 205 is provided with three sliding grooves, which are arranged in a circumferential array along the circumferential surface of the fixed ring 205. Each sliding groove is slidably connected to a corresponding slider 204. In the above design, the rotatable connection between the bottom of the rotating ring 202 and the inner bottom surface of the needle plate 106 can provide a circumferential rotation fulcrum, realizing the synchronous convergence and diffusion of the three clamping plates 206.

[0021] The positioning device 3 includes a positioning plate 301, a spring A302 fixedly connected to the bottom of the positioning plate 301, a long plate 303 fixedly connected to the bottom of the spring A302, a fixed plate 304 slidably connected to the surface of the long plate 303, a spring B305 fixedly connected to the bottom of the long plate 303, a connecting post 306 fixedly connected to the bottom of the long plate 303, and a pull plate 307 fixedly connected to the bottom of the connecting post 306. In the above design, the fixed connection between the spring B305 and the bottom of the long plate 303 can provide an automatic reset elastic force, realizing the effect of quick return and repeated use of the positioning device 3.

[0022] There are several positioning plates 301, which are arranged in a linear array along the surface of the long plate 303. All positioning plates 301 are set on the displacement path of the pull rod 201, and each of them has an inclined surface on the side near the pull rod 201. In the above design, the linear array of several positioning plates 301 can provide multiple locking points along the displacement path of the pull rod 201, so as to achieve a step-by-step positioning effect.

[0023] The surface of the long plate 303 has the same number of grooves as the positioning plate 301, and the bottom of each groove is fixedly connected to a corresponding spring A302. The top of each spring A302 is fixedly connected to the bottom of the corresponding positioning plate 301. One side of the fixing plate 304 is fixedly connected to one side of the needle plate 106, and the surface of the fixing plate 304 has a sliding groove. The surface of the long plate 303 is slidably connected in the sliding groove. The side of the spring B305 away from the long plate 303 is fixedly connected to the bottom surface of the sliding groove on the surface of the fixing plate 304. The surface of the connecting post 306 slides through the bottom surface of the fixing plate 304. In the above design, the connection between the groove and the spring A302 can provide an independent retraction space for the positioning plate 301, realizing a multi-level unidirectional locking function.

[0024] One side of the dial 105 is fixedly connected to the surface of the connecting block 102 near the needle plate 106. In the above design, the fixed connection of the dial 105 on the connecting block 102 can be coordinated with the rotation of the connecting plate 104 to achieve precise visual positioning of the puncture angle.

[0025] In the use of the thyroid fine needle puncture ultrasound navigation-assisted fixation device of the present invention, the operator first fixes the device to the ultrasound probe using the probe clamp 101. The connecting block 102 fixed to one side of the probe clamp 101 serves as a basic support. A hinge rod 103 passes through the side of the connecting block 102 away from the probe clamp 101 and is rotatably connected to it. A connecting plate 104 is fixed to one side of the hinge rod 103, and a needle guide plate 106 is fixed to one side of the connecting plate 104. When it is necessary to adjust the puncture angle, rotating the connecting plate 104 drives the needle guide plate 106 and the hinge rod 103 to rotate. At the same time, the scale 105 fixedly connected to the surface of the connecting block 102 near the needle guide plate 106 can display the current rotation angle value in real time, thereby realizing the precise angle positioning and navigation guidance of the puncture needle in the ultrasound plane.

[0026] Secondly, when it is necessary to adjust the needle diameter of the needle plate 106, the operator pulls or pushes the lever 201. The lever 201 drives the rotating ring 202, which is fixedly connected to it, to rotate on the inner bottom surface of the needle plate 106. The surface of the rotating ring 202 has three arc-shaped guide grooves, which are arranged in a circular array along the circumference of the rotating ring 202. Each arc-shaped guide groove has a sliding column 203. When the rotating ring 202 rotates, the eccentric trajectory of the arc-shaped guide groove forces the three sliding columns 203 to converge inward or expand outward simultaneously. The top of each sliding column 203 is fixedly connected to a slider 204. The three sliders 204 are respectively slidably connected to three grooves opened on the surface of the fixed ring 205. Inside, the top of the fixing ring 205 is fixedly connected to the inner top surface of the needle guide plate 106. The three sliding grooves are also distributed in a circumferential array along the circumferential surface of the fixing ring 205. Each slider 204 has a clamping plate 206 fixedly connected to one side, and a flexible plate 207 fixedly connected to one side of the clamping plate 206. The three flexible plates 207 together form a variable needle channel. When the three clamping plates 206 move synchronously towards the center, the needle channel diameter decreases. When the three clamping plates 206 move synchronously outward, the needle channel diameter increases. This achieves adaptive clamping and guidance for puncture needles of different outer diameters, thereby achieving adjustment of the needle channel diameter. Thus, it can adapt to different models of needles without replacing the entire device, avoiding damage to tissues or equipment caused by forcibly expanding the needle channel during surgery.

[0027] Simultaneously, when the operator pulls the lever 201 to adjust and reduce the diameter, several positioning plates 301 are linearly arrayed along the surface of the long plate 303 and are all set on the displacement path of the lever 201. Each positioning plate 301 has an inclined surface on the side near the lever 201. During the movement, the lever 201 pushes open each positioning plate 301 in sequence through the inclined surface. A spring A302 is fixedly connected to the bottom of each positioning plate 301. The bottom of the spring A302 is fixedly connected to the bottom of a groove on the surface of the long plate 303. When the lever 201 pushes the positioning plate 301, the spring A302 is compressed, and the positioning plate 301 retracts into the groove. After the lever 201 passes, the spring A302 resets and springs the positioning plate 301 back up, thereby forming a one-way lock on the lever 201 to prevent it from retracting on its own. When it is necessary to release the lock... At a set time, the operator pulls down the pull plate 307. The pull plate 307 drives the long plate 303 to slide down along the groove on the surface of the fixed plate 304 via the connecting column 306. A spring B305 is fixedly connected to the bottom of the long plate 303. The side of the spring B305 away from the long plate 303 is fixedly connected to the bottom surface of the groove. At this time, the spring B305 is compressed, and all the positioning plates 301 move down synchronously with the long plate 303 and exit the displacement path of the pull rod 201. The pull rod 201 can move freely in the opposite direction. After the pull plate 307 is released, the spring B305 pushes the long plate 303 and the positioning plates 301 to reset and restore the locking function. This prevents the pull rod 201 from retracting on its own due to accidental contact or vibration during the puncture process, thereby ensuring that the needle diameter remains stable throughout the puncture process and avoiding puncture deviation or tissue damage caused by accidental changes in diameter.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A thyroid fine-needle aspiration ultrasound-guided assisted fixation device, comprising a fixation device, characterized in that: The fixing device includes a probe clamp, a connecting block is fixedly connected to one side of the probe clamp, a hinge rod passes through the side of the connecting block away from the probe clamp and is rotatably connected to the connecting block, a connecting plate is fixedly connected to one side of the hinge rod, a scale is provided on one side of the connecting plate, and a needle plate is fixedly connected to one side of the connecting plate. It also includes an adjustment device for adjusting the diameter of the needle inlet of the needle plate; A positioning device is used to improve the stability of the adjustment device.

2. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 1, characterized in that: The adjusting device includes a pull rod, a rotating ring fixedly connected to one side of the pull rod, a movable column slidably connected to the surface of the rotating ring, a slider fixedly connected to the top of the movable column, a fixed ring slidably connected to the surface of the slider, a clamping plate fixedly connected to one side of the slider, and a flexible plate fixedly connected to one side of the clamping plate.

3. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 2, characterized in that: The bottom of the rotating ring is rotatably connected to the inner bottom surface of the needle plate, and the surface of the rotating ring is provided with three arc-shaped guide grooves arranged in a circumferential array along the circumference of the rotating ring. Each arc-shaped guide groove is slidably connected to a corresponding moving column. The top of the fixed ring is fixedly connected to the inner top surface of the needle plate, and the surface of the fixed ring is provided with three sliding grooves arranged in a circumferential array along the circumferential surface of the fixed ring. Each sliding groove is slidably connected to a corresponding slider.

4. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 1, characterized in that: The positioning device includes a positioning plate, a spring A fixedly connected to the bottom of the positioning plate, a long plate fixedly connected to the bottom of the spring A, a fixed plate slidably connected to the surface of the long plate, a spring B fixedly connected to the bottom of the long plate, a connecting post fixedly connected to the bottom of the long plate, and a pull plate fixedly connected to the bottom of the connecting post.

5. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 4, characterized in that: The number of positioning plates is several, and they are arranged linearly along the surface of the long plate. All positioning plates are set on the displacement path of the pull rod, and each plate has an inclined surface on the side closest to the pull rod.

6. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 4, characterized in that: The surface of the long plate has the same number of grooves as the positioning plate, and the bottom of each groove is fixedly connected to a corresponding spring A, and the top of each spring A is fixedly connected to the bottom of the corresponding positioning plate. One side of the fixing plate is fixedly connected to one side surface of the needle plate, and the surface of the fixing plate has a sliding groove, and the surface of the long plate is slidably connected in the sliding groove. The side of the spring B away from the long plate is fixedly connected to the bottom surface of the sliding groove on the surface of the fixing plate, and the surface of the connecting column slides through the bottom surface of the fixing plate.

7. The thyroid fine-needle aspiration ultrasound-guided assisted fixation device according to claim 1, characterized in that: One side of the dial is fixedly connected to the surface of the connecting block near the needle plate.

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