Medical minimally invasive puncture positioning device

Abstract

The utility model belongs to the field of minimally invasive puncture, concretely relates to a medical minimally invasive puncture positioning device, solves the problems in the background art, including bottom box and the base fixedly connected in bottom box lower extreme, the upside of bottom box is connected with the arc -shaped support of horizontal movement slidingly, the surface of arc -shaped support upper end's arc structure is slidingly connected with sliding block, the surface of sliding block is slidingly connected with arc -shaped arm along circular arc track, the upper end of bottom box is slidingly connected with the head support of height -adjustable, the utility model discloses adopt coaxial double -arc double -dimensional angle adjusting structure, effectively avoid the puncture path deviation, significantly improve the skull puncture positioning precision, and set up the head support, can realize height -adjustable and have no horizontal sway, can adapt to different age, head type and body position patient, head fixed stable and reliable, provide stable body position datum for puncture operation.

Description

Technical Field

[0001] This utility model belongs to the field of minimally invasive puncture, specifically relating to a medical minimally invasive puncture positioning device. Background Technology

[0002] Currently, minimally invasive cranial puncture surgery is a key technique in neurosurgery for procedures such as intracranial hematoma drainage, hydrocephalus drainage, intracranial pressure monitoring, brain abscess puncture, stereotactic biopsy, and local drug injection. The accuracy of the puncture directly affects the surgical outcome and patient prognosis.

[0003] Currently, the most common positioning method for cranial puncture in clinical practice is positioning using a positioning frame. However, existing positioning frames generally have the following drawbacks: the height of the head fixation structure is not adjustable, making it difficult to adapt to patients of different ages, head shapes, and body positions. The head is prone to slight movements, which can cause the positioning reference to shift. Furthermore, the locking mechanism is a decentralized and independent locking mechanism, which requires multiple operations to lock separately, making the process cumbersome and time-consuming. Utility Model Content

[0004] The purpose of this utility model is to overcome the problems existing in the background technology, thereby realizing a medical minimally invasive puncture positioning device.

[0005] To achieve the above-mentioned utility model objectives, the technical solution of this utility model is as follows: a medical minimally invasive puncture positioning device, comprising a base box and a base fixedly connected to the lower end of the base box, an arc-shaped support that can move horizontally slidably connected to the upper side of the base box, a sliding block slidably connected to the arc-shaped surface of the upper end of the arc-shaped support, an arc-shaped arm slidably connected to the surface of the sliding block along an arc trajectory, an installation hole being provided at one end of the arc-shaped arm, the arc-shaped arm and its sliding trajectory being coaxial with the arc-shaped structure at the upper end of the arc-shaped support, a first angle scale and a second angle scale being provided on the surface of the arc-shaped structure at the upper end of the arc-shaped support and the surface of the arc-shaped arm, respectively; a headrest that can adjust the height is slidably connected to the upper end of the base box.

[0006] Preferably, the left end of the base box is provided with a sliding opening, and the lower end of the arc-shaped bracket is slidably connected to the sliding opening; the lower end of the arc-shaped bracket placed inside the base box is fixedly connected to a connecting plate, the base box is rotatably connected to a first adjusting screw, the connecting plate is threadedly connected to the first adjusting screw, one end of the first adjusting screw protrudes out of the outside of the base box and a drive knob is fixedly connected to the protruding end of the first adjusting screw.

[0007] Preferably, one end of the sliding block has an observation port extending to the other end, and a first pointer is fixedly connected to the upper inner side of the observation port. The first pointer indicates a first angle scale on the surface of the arc-shaped arm.

[0008] Preferably, the lower end of the sliding block is fixedly connected to a second pointer for indicating the second scale.

[0009] Preferably, a first threaded positioning cylinder is threadedly connected to the lower end of one side of the sliding block, and a first fixing plate is fixedly connected to the end of the first threaded positioning cylinder facing the arc-shaped bracket; a first drive shaft is splinedly connected to the end of the first threaded positioning cylinder away from the first fixing plate.

[0010] Preferably, the surface of the arc-shaped arm is coaxially provided with an arc-shaped groove, and the lower end of the arc-shaped groove is provided with an arc-shaped opening. One end of the sliding block is threadedly connected to a second threaded positioning cylinder, and the lower end of the second threaded positioning cylinder is fixedly connected to a second fixing plate, which fits against the inner wall of the arc-shaped groove. The middle part of the second threaded positioning cylinder is splinedly connected to a second drive shaft, and the upper end of the second drive shaft is fixedly connected to a positioning knob. A universal joint is fixedly connected between the first drive shaft and the second drive shaft.

[0011] Preferably, limiting cylinders are fixedly connected to both sides of the lower end of the head support, and limiting rods are slidably connected to the lower sides of the limiting cylinders along the axial direction. The lower ends of the limiting rods are fixedly connected to the inner wall of the base box. A threaded cylinder is fixedly connected to the middle of the lower end of the head support, and a second adjusting screw is threadedly connected to the lower side of the threaded cylinder. The lower end of the second adjusting screw is rotatably connected to the inner wall of the base box. A first bevel gear is fixedly connected to the lower end of the second adjusting screw. A second bevel gear meshes with one side of the first bevel gear. A gear shaft is fixedly connected to the middle of the second bevel gear. The gear shaft is rotatably connected to the surface of the base box, and an adjusting knob is fixedly connected to the other end of the gear shaft.

[0012] Preferably, the two ends of the arc-shaped bracket are respectively connected to a moving screw via a radial horizontal spline. The inner ends of the moving screws are respectively fixedly connected to a limiting plate. The surface of the moving screws is threadedly connected to an adjusting cylinder, which is rotatably connected to the arc-shaped bracket. A first pulley is fixedly connected to the surface of the adjusting cylinder. A synchronous shaft is rotatably connected to the bottom of the base box. The two ends of the synchronous shaft are respectively fixedly connected to a second pulley coaxially. Correspondingly, the first and second pulleys are fitted with transmission belts. A control knob is fixedly connected to one end of the synchronous shaft.

[0013] Compared with the prior art, the medical minimally invasive puncture positioning device of this utility model has at least the following beneficial effects: 1. This utility model adopts a coaxial double-arc double-dimensional angle adjustment structure. The arc-shaped support and the arc-shaped arm maintain the same rotation center. The puncture axis remains constant during the angle adjustment process, effectively avoiding puncture path deviation and significantly improving the positioning accuracy of skull puncture. It can meet the high-precision puncture requirements of deep intracranial target points and functional areas. It is also equipped with a headrest, which can achieve height adjustment without horizontal swaying. It can be adapted to patients of different ages, head shapes and body positions. The head is fixed stably and reliably, providing a stable body position benchmark for puncture operation. 2. The arc-shaped bracket of this utility model can be precisely adjusted horizontally. It is reinforced by synchronous clamping with double-sided limiting plates to form a double locking mechanism of threaded self-locking and mechanical clamping. It also adopts a universal joint linkage synchronous locking mechanism, which can lock the sliding block and the arc-shaped arm synchronously through a single positioning knob. The operation steps are simplified and the positioning efficiency is high. It is suitable for emergency and bedside rapid puncture scenarios. Attached Figure Description

[0014] Figure 1 This is a first schematic diagram of the overall structure of this utility model; Figure 2 This is a second schematic diagram of the overall structure of this utility model; Figure 3 This is a schematic diagram of the arc-shaped arm mounting structure of this utility model; Figure 4 This is a schematic diagram of the corresponding structure of the first pointer and the first angle scale of this utility model; Figure 5 This is a schematic diagram of the positioning knob drive structure of this utility model; Figure 6 This is the utility model Figure 5 A magnified view of N points; Figure 7 This is a schematic diagram of the headrest adjustment structure of this utility model; Figure 8 This is the utility model Figure 7 A magnified schematic diagram of part J; Figure 9 This is a schematic diagram of the arc-shaped bracket drive structure of this utility model; Figure 10 This is a schematic diagram of the motion-limiting plate driving structure of this utility model.

[0015] In the diagram: 1-Base box; 2-Base; 3-Headrest; 4-Arc-shaped bracket; 5-First adjusting screw; 6-Connecting plate; 7-Drive knob; 8-Sliding block; 9-Arc-shaped arm; 10-First angle scale; 11-First pointer; 12-Positioning knob; 13-First fixing plate; 14-First threaded positioning cylinder; 15-First drive shaft; 16-Universal joint; 17-Second threaded positioning cylinder; 18-Second fixing plate; 19-Second drive shaft; 20-Limiting rod; 21-Limiting cylinder; 22-Threaded cylinder; 23-Second adjusting screw; 24-First bevel gear; 25-Second bevel gear; 26-Adjusting knob; 27-Limiting plate; 28-Moving screw; 29-Adjusting cylinder; 30-First pulley; 31-Synchronous shaft; 32-Second pulley; 33-Control knob; 34-Arc-shaped opening; 35-Arc-shaped groove. Detailed Implementation

[0016] The following description, in conjunction with the accompanying drawings and specific embodiments, provides a more detailed description of a medical minimally invasive puncture positioning device according to the present invention.

[0017] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0018] This embodiment discloses a minimally invasive medical puncture positioning device for positioning patients during craniotomy, such as... Figures 1-10As shown, the device includes a base box 1 and a base 2 fixedly connected to the lower end of the base box 1. The base 2 adopts a widened and thickened structure to increase the contact area with the support surface, significantly improving the overall stability of the device and effectively preventing displacement of the device due to contact or vibration during puncture operations. This ensures positioning accuracy from a fundamental level and reduces puncture risks. A horizontally movable arc-shaped support 4 is slidably connected to the upper side of the base box 1. The arc-shaped support 4 adopts a high-strength, lightweight arc-shaped structure, ensuring both support rigidity and stability, and providing a stable arc-shaped support reference for adjusting the puncture angle, enabling a wide range of flexible adjustments to the puncture direction in the vertical plane. A sliding block 8 is slidably connected to the arc-shaped surface of the upper end of the arc-shaped support 4. The sliding block 8 can smoothly slide along the arc trajectory of the arc-shaped support 4 to complete the coarse adjustment of the puncture angle in the first dimension, quickly approaching the target puncture direction. An arc-shaped arm 9 is slidably connected to the surface of the sliding block 8 along the arc trajectory. The arc-shaped arm 9 can slide coaxially with the sliding block 8 to achieve the fine adjustment of the puncture angle in the second dimension. The combination of coarse and fine adjustment balances adjustment efficiency and positioning accuracy. The arc-shaped arm 9 and the arc-shaped structure at the upper end of the arc-shaped support 4 are strictly coaxially set to ensure that the puncture axis remains fixed throughout the entire angle adjustment process, completely avoiding positioning deviations caused by axis offset. This is the core structural guarantee for achieving high-precision minimally invasive puncture. One end of the arc-shaped arm 9 has a mounting hole with a standard diameter that matches conventional puncture needles and puncture catheters. This allows for the quick installation and fixation of various minimally invasive puncture instruments, providing rigid support and linear guidance for the instruments and preventing bending or displacement of the instruments during puncture. The upper surface of the arc-shaped support 4 and the surface of the arc-shaped arm 9 are respectively provided with a first angle scale and a second angle scale. The two angle scales are set independently and, together with the pointer, enable quantification, visualization, and traceable adjustment of the angle. This eliminates the need for experience-based estimation, significantly reduces human error, and improves the consistency and repeatability of puncture positioning. The upper end of the base box 1 is slidably connected to a height-adjustable headrest 3. The headrest 3 adopts a flexible support structure, and its surface can conform to the contour of the human head. It can not only stably support the patient's head and limit head movement, but also adapt to patients of different heights and head shapes through height adjustment. While improving the patient's comfort during the operation, it establishes a stable and uniform puncture position benchmark and further enhances the reliability of positioning.

[0019] The left end of the base box 1 has a sliding opening with a precision guide structure, providing linear guidance for the horizontal movement of the arc-shaped support 4, preventing jamming, skewness, and wobbling during movement, and ensuring the stability and straightness of horizontal adjustment. A connecting plate 6 is fixedly connected to the lower end of the arc-shaped support 4 inside the base box 1. A first adjusting screw 5 is rotatably connected inside the base box 1. The connecting plate 6 and the first adjusting screw 5 are connected by a precision thread. Threaded transmission has the advantages of smooth transmission, reliable self-locking, and zero backlash. After adjustment, it can automatically lock in position without the need for an additional locking mechanism, preventing loosening or displacement during use. One end of the first adjusting screw 5 protrudes from the outside of the base box 1 and is fixedly connected to a drive knob 7. Medical personnel can rotate the drive knob 7 with one hand, driving the first adjusting screw 5 to rotate. Through threaded transmission, the connecting plate 6 and the arc-shaped support 4 are smoothly driven to move horizontally, achieving precise micro-adjustment of the puncture position. The operation is simple and labor-saving, greatly improving the device's adaptability to different puncture sites.

[0020] The sliding block 8 has an observation port at one end, which is open-ended and provides a wide field of view. This allows medical staff to read angle values ​​intuitively and quickly during operation without having to bend over or adjust the viewing angle, thus improving ease of operation. A first pointer 11 is fixedly connected to the upper inner side of the observation port. The tip of the first pointer 11 is precisely aligned with the first angle scale on the surface of the arc-shaped arm 9, displaying the adjustment angle of the arc-shaped arm 9 relative to the sliding block 8 in real time and clearly. This enables precise and visualized angle adjustment, completely eliminating errors caused by manual estimation and meeting the stringent requirements of sub-millimeter positioning for minimally invasive puncture.

[0021] A second pointer is fixedly connected to the lower end of the sliding block 8. The second pointer precisely matches the second angle scale on the surface of the arc-shaped support 4, independently displaying the adjustment angle of the sliding block 8 relative to the arc-shaped support 4. The dual pointers and dual scales display independently without interference, allowing simultaneous reading of the adjustment angle in two dimensions. This facilitates quick verification and correction of positioning parameters by medical staff, further improving the accuracy, readability, and operational efficiency of angle adjustment, perfectly adapting to the high-precision minimally invasive puncture scenario of craniotomy.

[0022] The lower end of one side of the sliding block 8 is threadedly connected to a first threaded positioning cylinder 14. A first fixing plate 13 is fixedly connected to the end of the first threaded positioning cylinder 14 facing the arc-shaped bracket 4. The first fixing plate 13 is made of a high-friction coefficient material. Rotating the first threaded positioning cylinder 14 pushes the first fixing plate 13 tightly against the surface of the arc-shaped bracket 4, achieving rapid and secure locking of the sliding block 8. After locking, the sliding block 8 does not move, ensuring a constant angle during puncture. The end of the first threaded positioning cylinder 14 away from the first fixing plate 13 is splinedly connected to a first drive shaft 15. The spline connection stably transmits torque while accommodating slight axial displacement, preventing transmission jamming and ensuring continuous and reliable power transmission.

[0023] The surface of the arc-shaped arm 9 is coaxially provided with an arc-shaped groove 35. The arc-shaped groove 35 provides precise positioning and smooth guidance for the sliding of the arc-shaped arm 9, restricting the arc-shaped arm 9 to move only along the coaxial arc trajectory and preventing radial deviation. The lower end of the arc-shaped groove 35 is provided with an arc-shaped opening 34, which provides space for the second fixing plate 18 to extend, ensuring that the second fixing plate 18 can smoothly fit against the inner wall of the arc-shaped groove 35, improving the locking fit and stability. One end of the sliding block 8 is threadedly connected to a second threaded positioning cylinder 17, and the lower end of the second threaded positioning cylinder 17 is fixedly connected to the second fixing plate 18. The second fixing plate 18 is fully fitted against the inner wall of the arc-shaped groove 35. Rotating the second threaded positioning cylinder 17 can push the second fixing plate 18 to press against the inner wall of the arc-shaped groove 35, realizing independent and stable locking of the arc-shaped arm 9. After locking, the arc-shaped arm 9 has no shaking or angular deviation, avoiding angular deviation caused by the force of the instrument during puncture. The second threaded positioning cylinder 17 is splinedly connected to the middle of the second drive shaft 19, and the upper end of the second drive shaft 19 is fixedly connected to the positioning knob 12.

[0024] A universal joint 16 is fixedly connected between the first drive shaft 15 and the second drive shaft 19. The universal joint 16 can stably transmit torque at any angle, perfectly adapting to the angle changes of the sliding block 8 and the arc arm 9. Rotating a single positioning knob 12 can simultaneously drive the first drive shaft 15 and the second drive shaft 19 to rotate synchronously. One-button synchronous locking and unlocking of the sliding block 8 and the arc arm 9 can be achieved, greatly simplifying the operation steps, shortening the positioning adjustment time, and improving surgical efficiency. At the same time, synchronous locking ensures the consistency of the fixed angles in the two dimensions, avoiding the angle deviation caused by individual locking, and further enhancing positioning stability.

[0025] The headrest 3 is fixedly connected to two sides of its lower end with limiting cylinders 21. A limiting rod 20 is slidably connected axially to the lower side of the limiting cylinders 21. The limiting cylinders 21 and the limiting rod 20 use a clearance fit sliding structure, strictly limiting the headrest 3 to vertical lifting and lowering movements only, completely eliminating horizontal swaying and rotation, and ensuring head fixation. The lower end of the limiting rod 20 is fixedly connected to the inner wall of the base box 1. A threaded cylinder 22 is fixedly connected to the middle of the lower end of the headrest 3. A second adjusting screw 23 is threadedly connected to the lower side of the threaded cylinder 22. The lower end of the second adjusting screw 23 is rotatably connected to the inner wall of the base box 1. A first bevel gear 24 is fixedly connected to the lower end of the second adjusting screw 23. One side of the first bevel gear 24 meshes with a second bevel gear 25. The bevel gear meshing structure can smoothly change the transmission direction, converting horizontal operating force into vertical lifting force, realizing side-operated driving of the headrest 3 to lift and lower, making operation more ergonomic. The second bevel gear 25 is fixedly connected to the gear shaft in the middle. The gear shaft is rotatably connected to the surface of the base box 1. The other end of the gear shaft is fixedly connected to the adjustment knob 26. Rotating the adjustment knob 26 will drive the second adjustment screw 23 to rotate through the bevel gear pair. The head support 3 will be smoothly and steplessly raised and lowered through the threaded transmission. After the height is adjusted, the threaded structure will automatically lock itself, and the head support 3 will be fixed in position and will not sink. It can maintain stable support for a long time, adapt to the head height requirements of different patients, improve the patient's position comfort and fixation reliability, and lay the foundation for accurate puncture.

[0026] The two ends of the arc-shaped support 4 are respectively connected to movable screws 28 radially and horizontally via splines. The spline connection ensures that the movable screws 28 can stably transmit torque and freely extend and retract axially, with no jamming or backlash in the transmission. Limiting plates 27 are fixedly connected to the inner ends of the movable screws 28. The limiting plates 27 have an arc-shaped fitting structure, which can perfectly fit the side of the sliding block 8, simultaneously clamping and fixing the sliding block 8 from both sides, forming a double-sided clamping and locking mechanism. This further improves the stability of the sliding block 8 after locking, preventing slight displacement of the sliding block 8 due to instrument force during puncture. The double locking ensures absolutely reliable positioning. An adjusting cylinder 29 is threadedly connected to the surface of the movable screws 28. The adjusting cylinder 29 is rotatably connected to the arc-shaped support 4. Rotating the adjusting cylinder 29 drives the movable screws 28 to move smoothly axially, causing the limiting plates 27 to move closer to or away from the sliding block 8, with uniform and controllable clamping force. A first pulley 30 is fixedly connected to the surface of the adjusting cylinder 29, and a synchronous shaft 31 is rotatably connected to the bottom of the base box 1. A second pulley 32 is fixedly connected to both ends of the synchronous shaft 31 coaxially. A transmission belt is fitted between the first pulley 30 and the second pulley 32. The transmission belt and pulleys cooperate to achieve synchronous transmission on both sides, ensuring that the rotational speed and direction of the adjusting cylinders 29 on both sides are completely consistent. A control knob 33 is fixedly connected to one end of the synchronous shaft 31. Rotating the control knob 33 drives the moving screws 28 on both sides to extend and retract synchronously through the synchronous shaft 31, pulleys, and transmission belt. This causes the limiting plate 27 to synchronously and symmetrically clamp the sliding block 8, ensuring uniform force on both sides without uneven load. This avoids unilateral clamping that could cause the sliding block 8 to tilt, further strengthening the fixation effect of the sliding block 8 and ensuring stable and error-free puncture positioning throughout the procedure. This effectively improves the success rate and safety of minimally invasive puncture and reduces the risk of tissue damage to the patient.

[0027] In use, the device is first placed stably on the operating platform via the base 2, and the patient's head is placed on the headrest 3. The adjustment knob 26 is turned, and the second bevel gear 25 and the first bevel gear 24 are reversed to drive the second adjustment screw 23 to rotate. This causes the threaded cylinder 22 and the headrest 3 to move vertically up and down along the limiting rod 20 and the limiting cylinder 21, which adapts to the height of the patient's head and fixes the body position, providing a stable reference for the puncture operation.

[0028] Rotating the drive knob 7 causes the first adjusting screw 5 to rotate, driving the connecting plate 6 and the arc-shaped bracket 4 to move horizontally along the sliding opening of the base box 1 via threaded transmission, thus completing the horizontal positioning of the puncture site. Pushing the sliding block 8 along the arc-shaped trajectory of the arc-shaped bracket 4 achieves coarse adjustment of the puncture angle in the first dimension. The second pointer at the lower end of the sliding block 8 engages with the second angle scale on the surface of the arc-shaped bracket 4 to display the angle value in real time. Pushing the arc-shaped arm 9 to slide along the sliding block 8 in a coaxial arc achieves fine adjustment of the puncture angle in the second dimension. The first pointer 11 inside the observation port of the sliding block 8 engages with the first angle scale 10 on the surface of the arc-shaped arm 9 to accurately display the fine-tuned angle. The independent adjustment of the two angle dimensions, coupled with their coaxial setting, ensures that the puncture axis remains fixed, preventing positioning deviation.

[0029] After the angle adjustment is completed, rotate the positioning knob 12. The torque is transmitted synchronously through the second drive shaft 19, universal joint 16 and the first drive shaft 15, driving the second threaded positioning cylinder 17 and the first threaded positioning cylinder 14 to rotate respectively. This causes the second fixing plate 18 to press against the inner wall of the arc groove 35 of the arc arm 9 and the first fixing plate 13 to press against the surface of the arc bracket 4. A single operation synchronously completes the locking of the sliding block 8 and the arc arm 9. Then rotate the control knob 33, which is synchronously transmitted through the synchronous shaft 31, the second pulley 32, the transmission belt and the first pulley 30, driving the adjusting cylinder 29 to rotate. This drives the moving screws 28 on both sides and the limiting plate 27 to move inward synchronously, symmetrically clamping the sliding block 8, achieving double reinforcement and locking.

[0030] The puncture instrument is installed in the mounting hole at the end of the arc-shaped arm 9 and advanced linearly along a fixed path to complete a precise minimally invasive puncture. After the operation is completed, turning each knob in the reverse direction will unlock the mechanism and reset it for reuse.

[0031] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of this invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0032] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation on quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0033] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed by the present invention without exceeding the protection scope of the present invention.

Claims

1. A medical minimally invasive puncture positioning device, characterized in that, The device includes a base box (1) and a base (2) fixedly connected to the lower end of the base box (1). The upper side of the base box (1) is slidably connected to an arc-shaped support (4) that can move horizontally. The upper arc-shaped structure surface of the arc-shaped support (4) is slidably connected to a sliding block (8). The surface of the sliding block (8) is slidably connected to an arc-shaped arm (9) along an arc trajectory. One end of the arc-shaped arm (9) is provided with a mounting hole. The arc-shaped arm (9) and its sliding trajectory are coaxial with the arc-shaped structure at the upper end of the arc-shaped support (4). The surface of the arc-shaped structure at the upper end of the arc-shaped support (4) and the surface of the arc-shaped arm (9) are respectively provided with a first angle scale (10) and a second angle scale. The upper end of the base box (1) is slidably connected to a headrest (3) that can adjust the height.

2. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The left end of the bottom box (1) is provided with a sliding opening, and the lower end of the arc-shaped bracket (4) is slidably connected to the sliding opening; the lower end of the arc-shaped bracket (4) placed inside the bottom box (1) is fixedly connected to a connecting plate (6), and the bottom box (1) is rotatably connected to a first adjusting screw (5). The connecting plate (6) is threadedly connected to the first adjusting screw (5), and one end of the first adjusting screw (5) protrudes out of the outside of the bottom box (1) and the end of the first adjusting screw (5) protruding out of the outside of the bottom box (1) is fixedly connected to a drive knob (7).

3. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The sliding block (8) has an observation port at one end and a first pointer (11) fixedly connected to the upper inner side of the observation port. The first pointer (11) indicates the first angle scale (10) on the surface of the arc arm (9).

4. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The lower end of the sliding block (8) is fixedly connected to a second pointer for indicating the second scale.

5. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The lower end of one side of the sliding block (8) is threadedly connected to a first threaded positioning cylinder (14), and the end of the first threaded positioning cylinder (14) facing the arc-shaped bracket (4) is fixedly connected to a first fixing plate (13); the end of the first threaded positioning cylinder (14) away from the first fixing plate (13) is splinedly connected to a first drive shaft (15).

6. The medical minimally invasive puncture positioning device according to claim 5, characterized in that: The surface of the arc-shaped arm (9) is coaxially provided with an arc-shaped groove (35), and the lower end of the arc-shaped groove (35) is provided with an arc-shaped opening (34). One end of the sliding block (8) is threadedly connected to a second threaded positioning cylinder (17), and the lower end of the second threaded positioning cylinder (17) is fixedly connected to a second fixing plate (18). The second fixing plate (18) is in contact with the inner wall of the arc-shaped groove (35). The middle part of the second threaded positioning cylinder (17) is splinedly connected to a second drive shaft (19), and the upper end of the second drive shaft (19) is fixedly connected to a positioning knob (12). A universal joint (16) is fixedly connected between the first drive shaft (15) and the second drive shaft (19).

7. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The head support (3) is fixedly connected to two sides of the lower end of the head support (3). The lower side of the head support (3) is slidably connected to the lower side of the head support (3) along the axial direction of the lower side of the head support (3). The lower end of the head support (3) is fixedly connected to the inner wall of the bottom box (1). The lower end of the head support (3) is fixedly connected to the middle of the lower end of the head support (3). The lower side of the head support (3) is threadedly connected to the lower side of the head support (3). The lower side of the head support (3) is threadedly connected to the lower side of the head support (3). The lower end of the head support (3) is rotatably connected to the inner wall of the bottom box (1). The lower end of the head support (3) is fixedly connected to the lower side of the head support (3). The lower side of the head support (3) is threaded ...

8. The medical minimally invasive puncture positioning device according to claim 1, characterized in that: The two ends of the arc-shaped bracket (4) are respectively connected to a moving screw (28) by a radial horizontal spline. The inner ends of the moving screw (28) are respectively fixedly connected to a limiting plate (27). The surface of the moving screw (28) is threadedly connected to an adjusting cylinder (29). The adjusting cylinder (29) is rotatably connected to the arc-shaped bracket (4). The surface of the adjusting cylinder (29) is fixedly connected to a first pulley (30). The bottom of the base box (1) is rotatably connected to a synchronous shaft (31). The two ends of the synchronous shaft (31) are respectively fixedly connected to a second pulley (32) on the same axis. Correspondingly, the first pulley (30) and the second pulley (32) are fitted with a transmission belt. One end of the synchronous shaft (31) is fixedly connected to a control knob (33).

Images