CT puncture body position fixing device

Abstract

The present application relates to the technical field of medical devices, in particular to a CT puncture body position fixing device, which comprises a folding support frame and multiple sets of mounting arms; the folding support frame is composed of two sets of vertical frames and two sets of folding plates, the two sets of folding plates are respectively hinged to the upper ends of the opposite sides of the two sets of vertical frames, and the adjacent ends of the two sets of folding plates are hinged to each other, so that the whole can realize folding and unfolding actions; the multiple sets of mounting arms are movably assembled on the lower sides of the two sets of folding plates, and each mounting arm is provided with a fixing piece for limiting the patient's body. The folding support frame is used as the main frame, the two sets of vertical frames and the folding plates are hinged to each other to form a folding structure, which is unfolded and erected above the hospital bed during use, and can be folded and stored between the two sets of vertical frames during idle, thereby greatly reducing the storage volume and solving the problems of traditional split fixing components, such as scattering, large space occupation and difficult transportation.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a CT puncture positioning fixation device. Background Technology

[0002] CT-guided biopsy is a commonly used minimally invasive diagnostic and treatment technique in clinical imaging, widely applied in procedures such as tumor biopsy, drainage of effusions, and local drug administration. During the examination and surgery, the patient must remain in a specific, still position. If the body shifts or moves, it will not only cause deviations in the CT scan image but also significantly increase the risk of accidental injury to blood vessels and organs during the puncture. Therefore, maintaining a fixed position is a crucial step in CT-guided biopsy.

[0003] Currently, routine clinical positioning methods mainly fall into two categories: one is temporary fixation using simple devices such as straps and foam pads, which has poor stability, low patient comfort, and cannot adapt to patients of different body types; the other is a modular fixation bracket, which requires multiple fixation components to be installed one by one around the bed, resulting in a cumbersome and time-consuming assembly process, and the components are scattered, taking up a lot of space, making transportation and storage extremely inconvenient.

[0004] In view of the shortcomings of the existing technology, such as cumbersome assembly, poor adjustment flexibility, and inconvenient storage, the present invention proposes a foldable and flexibly adjustable CT puncture positioning fixation device to solve the problems in the existing technology. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the present invention proposes a CT puncture positioning fixation device to solve the technical problems mentioned in the background art.

[0006] The technical solution adopted in this invention is a CT puncture positioning fixation device, including a folding support frame and multiple sets of mounting arms; The folding support frame consists of two sets of vertical frames and two sets of folding plates. The two sets of folding plates are respectively hinged to the upper ends of the opposite side of the two sets of vertical frames, and the adjacent ends of the two sets of folding plates are hinged to each other, so that the whole can realize the folding and unfolding action. Multiple sets of mounting arms are movably assembled on the underside of two sets of folding plates, and each set of mounting arms is equipped with a fixation device for limiting the patient's body.

[0007] Furthermore, a groove is provided at the bottom of the folding plate along its length, and a slide plate is slidably assembled in the groove; a U-shaped seat is rotatably mounted at the bottom of the slide plate via a first rotating shaft, and the mounting arm is rotatably assembled inside the U-shaped seat via a second rotating shaft.

[0008] Furthermore, the U-shaped base is equipped with a locking mechanism, which is used to simultaneously lock and unlock the sliding position of the slide plate and the rotation angle of the mounting arm.

[0009] Furthermore, the locking mechanism includes a toothed plate, an arc-shaped tooth, a gear, and a push-pull assembly; the toothed plate is longitudinally slidably installed inside the slide groove, and a fixed tooth that meshes with the toothed plate is fixed at the top of the slide groove; the arc-shaped tooth is longitudinally slidably installed at the bottom of the U-shaped seat, and the gear is fixed at the top of the mounting arm and meshes with the arc-shaped tooth; the push-pull assembly connects the toothed plate and the arc-shaped tooth respectively, and is used to drive the two to move synchronously in opposite directions or in opposite directions.

[0010] Furthermore, the push-pull assembly includes a slider, a movable block, a first hinge rod, and a first spring; the bottom of the U-shaped seat has a through groove that passes through the first rotating shaft and the sliding plate, and two sliders are slidably disposed on the upper and lower sides of the through groove, the upper slider is rotatably connected to the toothed plate, and the lower slider is fixedly connected to the arc-shaped tooth; the side wall of the U-shaped seat has a transverse groove communicating with the through groove, the movable block is slidably assembled in the transverse groove, and two first hinge rods are hinged to the side of the movable block facing the through groove, and the two first hinge rods are respectively hinged to the two sliders; the first spring is disposed between the movable block and the transverse groove wall.

[0011] Furthermore, the device also includes an operating component for driving the movable block to slide, which includes a pull wire and a toggle block; the mounting arm has a pull wire groove inside, the upper end of the pull wire groove is connected to the horizontal groove, and the middle part passes through the center of the second rotating shaft; the pull wire is arranged in the pull wire groove, the top end of the pull wire is connected to the movable block, and the bottom end of the pull wire extends out of the pull wire groove and is fixed to the toggle block that is slidably assembled on the lower side of the mounting arm.

[0012] Furthermore, a second spring is connected between the slide plate and the side wall of the slide groove, and the second spring is located on the side of the slide plate near the hinge point of the two sets of folding plates; a coil spring is assembled between the second rotating shaft and the U-shaped seat, and the coil spring normally provides an elastic thrust for the mounting arm to flip outward.

[0013] Furthermore, the folding plate is provided with a rotating storage component, and the U-shaped base is equipped with an unlocking component that is linked to the pull wire; the rotating storage component can drive the first rotating shaft to rotate, and during the rotation of the first rotating shaft, the unlocking component synchronously triggers the locking mechanism to unlock, and works with the second spring and the coil spring to realize the automatic return and storage of the mounting arm.

[0014] Furthermore, the rotating storage assembly includes a top rod, a third spring, a slide rail, a second hinge rod, a rack, a gear ring, and a connecting rod; the folding plate has a cavity inside, the top rod is horizontally slidably assembled in the cavity, one end of the top rod extends out of the cavity and abuts against the vertical frame, and the other end is connected to the side wall of the cavity by the third spring; the slide rail is slidably arranged in the cavity, and the top rod and the slide rail are hinged by a second hinge rod; the sliding plate has an installation cavity inside, the upper end of the first rotating shaft extends into the installation cavity and fixes the gear ring, the rack is slidably assembled in the installation cavity and meshes with the gear ring, the outside of the rack is fixed with a connecting rod, and the other end of the connecting rod is slidably engaged with the slide rail.

[0015] Furthermore, the unlocking component is a lifting plate, which is longitudinally slidably mounted on a U-shaped seat. The bottom end of the lifting plate is connected to a pull wire, and the upper end of the lifting plate extends into a sliding groove and is machined with a guide slope. When the U-shaped seat rotates with the first rotating shaft, the slope of the lifting plate abuts against the bottom of the folding plate, driving the lifting plate to slide downward.

[0016] As can be seen from the above technical solution, the beneficial technical effects of the present invention are as follows: 1. This invention uses a folding support frame as the main frame. Two sets of vertical frames and folding plates are hinged together to form a folding structure. When in use, it is unfolded and set up above the hospital bed. When not in use, it can be folded up and stored between the two sets of vertical frames, which greatly reduces the storage volume and solves the problems of traditional split-type fixed parts being scattered, occupying a lot of space, and being difficult to transport.

[0017] 2. The mounting arm of this invention can adjust its lateral position by sliding along the slide groove with the help of a sliding plate, and can also rotate around the second pivot to adjust the pitch angle. Combined with the first pivot, it can achieve horizontal steering. The multi-dimensional adjustment method can adapt to patients of different heights and body types. With the help of different functional fasteners, it can accurately limit the position of the patient's abdomen, back, lower limbs and other parts.

[0018] 3. The present invention can simultaneously control the locking mechanism by moving the toggle block and pulling the wire. A single operation can lock the position of the slide plate and the angle of the mounting arm at the same time, without the need for step-by-step adjustment and fixation, thus shortening the preoperative preparation time.

[0019] 4. During the folding process of the folding support frame of the present invention, the rotating storage component, the unlocking component, the second spring, and the coil spring cooperate with each other to automatically complete a series of actions such as unlocking the locking mechanism, resetting the slide plate, returning the angle of the mounting arm to its original position, and horizontally turning for storage. This eliminates the need for staff to adjust the position of the mounting arms one by one, greatly reducing the intensity of manual operation. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a schematic diagram of the unfolded state of a CT puncture positioning and fixation device according to the present invention; Figure 2 This is a bottom view of the structure of a CT puncture positioning and fixation device of the present invention in its deployed state; Figure 3 This is a schematic diagram of the overall structure of the folding plate and mounting arm of the present invention; Figure 4 This is a schematic cross-sectional view of the folding plate and mounting arm of the present invention. Figure 1 ; Figure 5 for Figure 4 Enlarged structural diagram at point A; Figure 6 This is a schematic cross-sectional view of the folding plate and mounting arm of the present invention. Figure 2 ; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic cross-sectional view of the folding plate and mounting arm of the present invention. Figure 3 ; Figure 9 This is a schematic diagram of the overall structure of the mounting arm of the present invention; Figure 10 This is a schematic diagram of the structure of a CT puncture positioning and fixation device of the present invention in its stored state.

[0022] Figure label: 1. Folding support frame; 11. Vertical frame; 12. Folding plate; 13. Slide rail; 14. Slide plate; 141. Mounting cavity; 15. First pivot; 16. U-shaped seat; 17. Second pivot; 2. Mounting arm; 21. Fixing component; 3. Toothed plate; 31. Fixed tooth; 32. Arc tooth; 33. Gear; 34. Slide bar; 35. Through groove; 37. Movable block; 371. Horizontal groove; 372. First hinge rod; 373. First spring; 38. Pull wire; 39. Actuating block; 4. Second spring; 41. Coil spring; 5. Top rod; 51. Cavity; 52. Third spring; 53. Slide rail; 54. Second hinge rod; 55. Rack; 56. Gear ring; 57. Connecting rod; 6. Lifting plate. Detailed Implementation

[0023] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0024] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application should have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains.

[0025] Example: like Figure 1-10 As shown, this embodiment provides a CT puncture positioning fixation device, including a folding support frame 1 and a mounting arm 2, the specific structure of which is as follows: The folding support frame 1 consists of two sets of vertical frames 11 and two sets of folding plates 12. The two sets of folding plates 12 are respectively hinged to the upper end of the opposite side of the two sets of vertical frames 11, and the adjacent ends of the two sets of folding plates 12 are hinged to each other. The number of mounting arms 2 is multiple sets, and the multiple sets of mounting arms 2 are movably installed on the underside of the two sets of folding plates 12. Each set of mounting arms 2 is equipped with a fixing piece 21 for fixing the patient's position.

[0026] The device has an unfolded working state and a folded storage state: When unfolded, the two sets of vertical frames 11 separate to the sides, and the two sets of folding plates 12 unfold horizontally and are set up above the CT bed; when stored, the two sets of vertical frames 11 move closer to each other, and the two sets of folding plates 12 flip down and fold, and the whole device is stored between the two vertical frames 11.

[0027] The vertical frame 11 is U-shaped, and its opening width is greater than the width of the CT bed, making it easy to set up above the CT bed.

[0028] The mounting arm 2 is movably mounted on the underside of the folding plate 12, allowing the position and angle of the mounting arm 2 to be adjusted according to the patient's body shape or position. In this embodiment: there are four sets of mounting arms 2, which are located on two sets of folding plates 12 in pairs. The two sets of mounting arms 2 on the folding plates 12 are symmetrically distributed front and back. The two sets of fixation pieces 21 located on the upper body of the patient correspond to the abdomen and back of the patient's side. Thus, the front fixing piece 21 is an abdominal positioning block used to position and support the patient's abdomen, and the rear fixing piece 21 is a back positioning block used to position and support the patient's back. The two sets of fixation pieces 21 located on the lower body of the patient correspond to the patient's lower limbs; The front fixing member 21 is located at the instep of the patient's foot, and the rear fixing member 21 is located on the inside of the patient's bent leg, which can position and adjust the patient's lower limbs so that the lower limbs can be curled up and positioned. This design concentrates the patient positioning fixation components 21 on the folding plate 12. When the device is not in use, it can be folded and stored. When the device is in use, it can be unfolded and positioned above the patient. Compared with the existing technology, which requires multiple fixation components to be installed on the upper four sides of the bed through the card slots and then the patient's position is fixed, the operation is more convenient.

[0029] In this embodiment, the bottom of the folding plate 12 located above the patient's upper body is provided with several linearly distributed arm fixation buckles. When the patient is in a fixed position, the arm fixation buckles can fix the patient's arm. By selecting arm fixation buckles at different positions, the patient's arm can be fixed at different heights to avoid obstructing the puncture.

[0030] The bottom of the folding plate 12 has a groove 13 along its length. A slide plate 14 is slidably installed in the groove 13. A U-shaped seat 16 is rotatably installed on the bottom of the slide plate 14 via a first rotating shaft 15. The mounting arm 2 is rotatably installed in the U-shaped seat 16 via a second rotating shaft 17.

[0031] Lateral position adjustment: The slide plate 14 can slide left and right along the slide groove 13, which drives the entire assembly of mounting arms 2 to change the lateral position to adapt to different torso widths and limb positions of patients. Pitch angle adjustment: The mounting arm 2 can rotate up and down around the second pivot 17 to adjust the height and tilt angle of the fixing piece 21 to fit the patient's body contour; Horizontal steering adjustment: The U-shaped seat 16 can rotate horizontally around the first rotating shaft 15. This action is mainly used for device storage and to keep it locked during the normal body position fixation stage.

[0032] When storing the device, first slide the slide plate 14 away from the end of the slide groove 13 where the two sets of folding plates 12 are hinged together. Then, flip the mounting arm 2 upward to a horizontal position through the second pivot 17, and then flip the mounting arm 2 horizontally through the first pivot 15 so that the mounting arm 2 is located below the folding plate 12. Finally, push the two vertical frames 11 closer to each other, and flip the two folding plates 12 downward at their hinge points. Fold and store the device between the two vertical frames 11, thus completing the storage of the device.

[0033] The locking mechanism described below is used to fix the position of the mounting arm 2 so that it can fix the patient's position.

[0034] The U-shaped base 16 is equipped with a locking mechanism for securing the slide plate 14 and the mounting arm 2.

[0035] The locking mechanism includes: Toothed plate 3 is longitudinally slidably installed in slide groove 13, and fixed teeth 31 that match toothed plate 3 are fixed at the top of slide groove 13; The arc-shaped tooth 32 is longitudinally slidably installed at the bottom of the U-shaped seat 16, and the top of the mounting arm 2 is fixed with a gear 33 that matches the arc-shaped tooth 32; The push-pull assembly is connected to the toothed plate 3 and the arc-shaped tooth 32. The push-pull assembly is used to drive the toothed plate 3 and the arc-shaped tooth 32 to move in opposite directions or relative to each other.

[0036] The push-pull assembly can drive the toothed plate 3 and the arc-shaped tooth 32 to move in opposite directions or relative to each other. When the toothed plate 3 and the arc-shaped tooth 32 move relative to each other, the toothed plate 3 moves away from the fixed tooth 31 and the arc-shaped tooth 32 moves away from the gear 33. That is, the operator can slide the slide plate 14 along the slide groove 13 and rotate the mounting arm 2 along the second rotating shaft 17 to adjust the position of the mounting arm 2. When the toothed plate 3 and the arc-shaped tooth 32 move in opposite directions, the toothed plate 3 abuts against the fixed tooth 31, the arc-shaped tooth 32 abuts against the gear 33, and the position of the slide plate 14 and the mounting arm 2 is fixed, making it impossible to adjust the mounting arm 2. This allows the push-pull assembly to simultaneously fix or unlock the positions of the slide plate 14 and the mounting arm 2, making operation more convenient.

[0037] The push-pull assembly includes: Two sliders 34 are provided. A through groove 35 is opened at the bottom of the U-shaped seat 16, which extends upward through the first rotating shaft 15 and the slide plate 14. The two sliders 34 slide on the upper and lower sides of the through groove 35. The upper slider 34 is rotatably connected to the toothed plate 3, and the lower slider 34 is fixedly connected to the arc-shaped tooth 32. The movable block 37 and the U-shaped seat 16 have a transverse groove 371 that communicates with the through groove 35. The movable block 37 slides in the transverse groove 371. Two first hinge rods 372 are hinged to the side of the movable block 37 near the through groove 35. The two first hinge rods 372 are respectively hinged to two slide bars 34. A first spring 373 is provided between the side of the movable block 37 away from the through groove 35 and the side wall of the transverse groove 371. The operating component is used to drive the movable block 37 to slide.

[0038] The operating components include: Pull wire 38, the mounting arm 2 has a pull wire groove, the upper end of the pull wire groove is connected to the horizontal groove 371, the middle of the pull wire groove passes through the center of the second rotating shaft 17, the pull wire 38 is located in the pull wire groove, and the upper end of the pull wire 38 is connected to the movable block 37. The toggle block 39 is slidably mounted on the lower side of the mounting arm 2, and the lower end of the pull wire 38 is connected to the toggle block 39.

[0039] Since the actuating block 39 is slidably disposed on the underside of the mounting arm 2, when the operator needs to adjust the position and angle of the mounting arm 2, the operator only needs to hold the mounting arm 2 and slide the actuating block 39 with his / her fingers. The actuating block 39 pulls the movable block 37 to slide in the transverse groove 371 through the pull wire 38. The movable block 38 drives the two slide bars 34 to move relative to each other through the two first hinge rods 372, and compresses the first spring 373. When the two sliders 34 move relative to each other, they will drive the toothed plate 3 away from the fixed tooth 31 and the arc tooth 32 away from the gear 33. In this way, the mounting arm 2 can slide in the slide groove 13 through the slide plate 14 to change the overall position of the mounting arm 2. The mounting arm 2 can also rotate in the U-shaped seat 16 through the second rotating shaft 17 to change the angle of the mounting arm 2 and fix the patient in different positions. After the operator slides the toggle block 39 downwards, the elastic force of the first spring 373 will push the movable block 38 to reset, and the two first hinge rods 372 will push the two slide bars 34 away from each other, so that the toothed plate 3 abuts against the fixed tooth 31 and the arc tooth 32 abuts against the gear 33, thus fixing the position and angle of the mounting arm 2.

[0040] Because the cable groove passes through the center of the second rotating shaft 17, the cable 38 will not twist or be pulled when the mounting arm 2 rotates around the second rotating shaft 17, thus ensuring the stability of the transmission structure.

[0041] The upper slide bar 34 is rotatably connected to the toothed plate 3. The up and down movement of the slide bar 34 can drive the toothed plate 3 to move synchronously. When the mounting arm 2 rotates along the first rotating shaft 15, the U-shaped seat 16 and the internal slide bar 34 will rotate synchronously. Since the slide bar 34 is rotatably connected to the toothed plate 3 and the toothed plate 3 slides longitudinally with the slide groove 13, the rotation of the slide bar 34 will not drive the toothed plate 3 to rotate, so that the toothed plate 3 can maintain a meshing state with the fixed tooth 31.

[0042] A second spring 4 is provided between the side of the slide plate 14 near the hinge point of the two sets of folding plates 12 and the side wall of the slide groove 13. A coil spring 41 is provided between the second pivot 17 and the U-shaped seat 16. The coil spring 41 provides an outward flipping elastic force to the mounting arm 2.

[0043] The folding plate 12 is provided with a rotating storage assembly in the middle for driving the first rotating shaft 15 to rotate. The U-shaped seat 16 is provided with an unlocking component connected to the pull wire 38. After the rotating storage assembly drives the first rotating shaft 15 to rotate, the unlocking component can release the locking mechanism from fixing the slide plate 14 and the mounting arm 2. The second spring 4 drives the slide plate 14 to be at the end of the slide groove 13 away from the hinge point of the two sets of folding plates 12. The coil spring 41 drives the mounting arm 2 to flip to a horizontal state for storage.

[0044] The rotating storage assembly is used to drive the mounting arm 2 to rotate 90 degrees around the first pivot 15. After the unlocking member contacts the locking mechanism to fix the slide plate 14 and the mounting arm 2, the second spring 4 drives the slide plate 14 to be at the end of the slide groove 13 away from the hinge point of the two sets of folding plates 12. The coil spring 41 drives the mounting arm 2 to flip to a horizontal state. The rotating storage assembly can then rotate and store the horizontal mounting arm 2 under the folding plate 12. Finally, the two sets of vertical frames 11 push each other, causing the two sets of folding plates 12 to fold together. The second spring 4 and the coil spring 41 enable the mounting arm 2 to automatically move to a position for easy storage after the unlocking mechanism contacts and fixes the slide plate 14 and the mounting arm 2. Both provide power for the automatic storage of the mounting arm. This design eliminates the need for manual adjustment of the mounting arm 2's position by the operator in front of the storage device; automatic storage of the mounting arm 2 is possible regardless of its position or state. The specific structure is as follows: The rotating storage components include: The top rod 5 and the folding plate 12 have a cavity 51 in the middle. The top rod 5 slides horizontally in the cavity 51. A third spring 52 is provided between the top rod 5 near the hinge point of the two sets of folding plates 12 and the side wall of the cavity 51. The other end of the top rod 5 extends out of the cavity 51 and abuts against the vertical frame 11. The slide rail 53 is slidably installed in the cavity 51, and a second hinge rod 54 is provided between the top rod 5 and the slide rail 53. The rack 55 has a mounting cavity 141 inside the slide plate 14. The upper end of the first rotating shaft 15 extends into the mounting cavity 141 and is connected to a gear ring 56. The rack 55 is slidably installed in the mounting cavity 141 and meshes with the gear ring 56. The rack 55 is fixed with a connecting rod 57 that is slidably connected to the slide rail 53.

[0045] When the two folding plates 12 are in a horizontal state, that is, when the device is in an unfolded state, the end of the top rod 5 abuts against the vertical frame 11, and the rotation direction of the mounting arm 2 is perpendicular to the length direction of the folding plate 2, that is, the mounting arm 2 can rotate normally to fix the patient in different positions. When the slide plate 14 slides in the slide groove 13, the connecting rod 57 fixed by the rack 55 slides in the slide rail 53, that is, the first rotating shaft 15 cannot rotate, which prevents the mounting arm 2 from rotating horizontally along the first rotating shaft 15.

[0046] When the operator puts the device away, they push the two vertical frames 11 closer together, causing the two folding plates 12 to flip and fold. When the folding plates 12 flip along the hinge point of the vertical frames 11, the end of the top rod 5 will disengage from the vertical frames 11. Under the elastic force of the third spring 52, the top rod 5 is pushed to slide within the cavity 51. The sliding of the top rod 5 drives the slide rail 53 to slide back and forth within the cavity 51 via the second hinge rod 54, which in turn pulls the connecting rod 57 and the rack 55 to slide within the mounting cavity 141. Through the meshing of the rack 55 and the gear ring 56, the first rotating shaft 15 and the mounting arm 2 can be rotated horizontally by 90 degrees. This design allows the mounting arm 2 to be automatically rotated horizontally by 90 degrees when the device is put away. With the unlocking mechanism, the mounting arm 2 can be automatically put away without the need for additional operation by the operator.

[0047] The unlocking component includes a lifting plate 6, which slides longitudinally on a U-shaped seat 16 and is connected to a pull wire 38. The upper end of the lifting plate 6 extends into the slide groove 13 and is machined with a slope. When the U-shaped seat 16 rotates, the slope of the lifting plate 6 will abut against the bottom of the folding plate 12, pushing the lifting plate 6 to move downward.

[0048] When the device is in the unfolded state, the upper end of the lifting plate 6 extends into the slide groove 13; When the device is stored, the mounting arm 2 rotates around the first pivot 15, and the inclined surface of the lifting plate 6 abuts against the bottom of the folding plate 12, pushing the lifting plate 6 downward. This causes the pull cable 38 to move downward, pulling the movable block 37 to slide. This causes the toothed plate 3 to disengage from the fixed tooth 31 and the arc-shaped tooth 32 to disengage from the gear 33, thus automatically engaging and fixing the locking mechanism. The slide plate 14 is reset by the elastic force of the second spring, and the mounting arm 2 is flipped to a horizontal state by the elastic force of the coil spring, achieving automatic reset of the mounting arm 2. This eliminates the need for operators to manually operate the position of each mounting arm 2.

[0049] The working principle of the embodiments is explained in detail below: Pull the two sets of upright frames 11 toward the sides of the hospital bed, and the two sets of folding plates 12 unfold outward with the midpoint of their hinge as the center, so that the two sets of folding plates 12 are finally placed horizontally above the hospital bed. At this time, the outer end of the top rod 5 is always in contact with the side wall of the upright frame 11, and the third spring 52 is compressed; the top rod 5 limits the slide rail 53 through the second hinge rod 54, so the first rotating shaft 15 cannot rotate horizontally, and the mounting arm 2 can only slide laterally and adjust the pitch angle.

[0050] Medical staff adjust the position and angle of the implantation arm 2 according to the patient's body size and puncture site, as follows: Unlocking action: The finger moves the toggle block 39 on the lower side of the mounting arm 2. The toggle block 39 pulls the pull cable 38 downward. The pull cable 38 pulls the movable block 37 in the transverse groove 371 to slide outward. The first spring 373 is further compressed. The movable block 37 drives the two first hinge rods 372 to push the upper and lower slide bars 34 to move towards each other.

[0051] Free adjustment: The upper slide bar 34 drives the toothed plate 3 to move downward, and the toothed plate 3 disengages from the fixed tooth 31 in the slide groove 13. The slide plate 14 can slide freely along the slide groove 13 to adjust the lateral position of the mounting arm 2. The lower slide bar 34 drives the arc-shaped tooth 32 to move upward, and the arc-shaped tooth 32 disengages from the gear 33 on the mounting arm 2. The mounting arm 2 can rotate freely around the second rotating shaft 17 to adjust the pitch angle.

[0052] Locking and fixing: After adjustment, release the toggle block 39, the first spring 373 rebounds and pushes the movable block 37 to reset, the movable block 37 drives the two slide bars 34 to move in opposite directions through the first hinge rod 372; the toothed plate 3 resets upward and re-engages with the fixed tooth 31, locking the position of the slide plate 14; the arc-shaped tooth 32 resets downward and re-engages with the gear 33, locking the flip angle of the mounting arm 2.

[0053] At this time, the four sets of fixing pieces 21 on the mounting arms 2 respectively fit the patient's abdomen, back and lower limbs to fix the body position. The patient's body cannot move or shift, which meets the requirements of CT puncture surgery.

[0054] After the CT puncture procedure is completed, the folding and storage process is initiated. This device can be automatically stored without the need to adjust the mounting arms one by one. The principle is as follows: Push the two sets of vertical frames 11 inward, and the two sets of folding plates 12 begin to flip downward and fold together; as the vertical frames 11 move, the end of the top rod 5 disengages from the side wall of the vertical frame 11.

[0055] The third spring 52 rebounds, pushing the push rod 5 to slide into the cavity 51; the push rod 5 pulls the slide rail 53 back and forth through the second hinge rod 54, and the slide rail 53 drives the connecting rod 57 and the rack 55 to move synchronously; the rack 55 drives the meshing gear ring 56 to rotate, and the gear ring 56 drives the first rotating shaft 15 and the U-shaped seat 16 to rotate horizontally by 90° around the first rotating shaft 15.

[0056] During the rotation of the U-shaped seat 16, the inclined surface of the lifting plate 6 continuously presses against the bottom surface of the folding plate 12, forcing the lifting plate 6 to slide downwards; the lifting plate 6 pulls the pull line 38 to trigger the sliding of the movable block 37 again, the locking mechanism unlocks for the second time, and the toothed plate 3 and the arc-shaped tooth 32 completely disengage.

[0057] After the lock is released, the second spring 4 rebounds and pushes the slide plate 14 to slide to the limit position outside the slide groove 13; at the same time, the coil spring 41 releases its elastic force and pushes the mounting arm 2 to rotate around the second pivot 17 to a horizontal state.

[0058] After the mounting arm 2 is horizontally retracted below the folding plate 12, continue to push the two sets of vertical frames 11 together completely, the two sets of folding plates 12 are completely folded, and all parts are gathered between the two sets of vertical frames 11, completing the entire storage action, and can be directly transported or stored.

[0059] In other embodiments, the bottom of the vertical frame 11 is provided with casters for easy movement of the device.

[0060] In other embodiments, the inner sides of the two vertical frames 11 are provided with fixing buckles for connecting to the hospital bed. After the device is fully unfolded, the two vertical frames 11 can be fixed to the bed, thereby preventing the device from moving during use.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A CT puncture positioning device, characterized in that, include: Folding support frame (1), the folding support frame (1) consists of two sets of vertical frames (11) and two sets of folding plates (12). The two sets of folding plates (12) are respectively hinged to the upper end of the opposite side of the two sets of vertical frames (11), and the adjacent ends of the two sets of folding plates (12) are hinged to each other. The mounting arms (2) are in multiple sets. The mounting arms (2) are movably mounted on the underside of two sets of folding plates (12). Each of the mounting arms (2) is equipped with a fixation device (21) for fixing the patient's position.

2. The CT puncture positioning device according to claim 1, characterized in that, The bottom of the folding plate (12) is provided with a groove (13) along its length direction. A sliding plate (14) is slidably installed in the groove (13). A U-shaped seat (16) is rotatably installed at the bottom of the sliding plate (14) through a first rotating shaft (15). The mounting arm (2) is rotatably installed in the U-shaped seat (16) through a second rotating shaft (17).

3. The CT puncture positioning device according to claim 2, characterized in that, The U-shaped base (16) is provided with a locking mechanism, which is used to lock the sliding position of the slide plate (14) and the rotation angle of the mounting arm (2).

4. The CT puncture positioning device according to claim 3, characterized in that, The locking mechanism includes: Toothed plate (3), the toothed plate (3) is longitudinally slidably installed in the slide groove (13), and the top of the slide groove (13) is fixed with a fixing tooth (31) that matches the toothed plate (3). Arc-shaped teeth (32) are longitudinally slidably mounted on the bottom of the U-shaped seat (16), and a gear (33) matching the arc-shaped teeth (32) is fixed on the top of the mounting arm (2). A push-pull assembly is connected to a toothed plate (3) and an arc-shaped tooth (32), and the push-pull assembly is used to drive the toothed plate (3) and the arc-shaped tooth (32) to move in opposite directions or relative to each other.

5. The CT puncture positioning device according to claim 4, characterized in that, The push-pull assembly includes: There are two slide bars (34). The bottom of the U-shaped seat (16) has a through groove (35) that extends upward through the first rotating shaft (15) and the slide plate (14). The two slide bars (34) are slidably disposed on the upper and lower sides of the through groove (35). The upper slide bar (34) is rotatably connected to the toothed plate (3), and the lower slide bar (34) is fixedly connected to the arc-shaped tooth (32). The movable block (37) has a transverse groove (371) that communicates with the through groove (35) on the U-shaped seat (16). The movable block (37) slides in the transverse groove (371). Two first hinge rods (372) are hinged on the side of the movable block (37) near the through groove (35). The two first hinge rods (372) are respectively hinged to two slide bars (34). A first spring (373) is provided between the side of the movable block (37) away from the through groove (35) and the side wall of the transverse groove (371). The operating component is used to drive the movable block (37) to slide.

6. A CT puncture positioning device according to claim 5, characterized in that, The operating element includes: Pull wire (38), the mounting arm (2) has a pull wire groove, the upper end of the pull wire groove is connected to the horizontal groove (371), the middle part of the pull wire groove passes through the center of the second rotating shaft (17), the pull wire (38) is located in the pull wire groove, and the upper end of the pull wire (38) is connected to the movable block (37); A toggle block (39) is slidably mounted on the lower side of the mounting arm (2), and the lower end of the pull wire (38) is connected to the toggle block (39).

7. A CT puncture positioning device according to claim 6, characterized in that, A second spring (4) is provided between the side of the slide plate (14) near the hinge point of the two sets of folding plates (12) and the side wall of the slide groove (13). A coil spring (41) is provided between the second rotating shaft (17) and the U-shaped seat (16). The coil spring (41) provides an elastic force for the mounting arm (2) to flip outward.

8. A CT puncture positioning device according to claim 7, characterized in that, The folding plate (12) is provided with a rotating storage assembly in the middle for driving the first rotating shaft (15) to rotate. The U-shaped seat (16) is provided with an unlocking component connected to the pull wire (38). After the rotating storage assembly drives the first rotating shaft (15) to rotate, the unlocking component can release the locking mechanism from fixing the slide plate (14) and the mounting arm (2). The second spring (4) drives the slide plate (14) to be at one end of the slide groove (13) away from the hinge point of the two sets of folding plates (12). The coil spring (41) drives the mounting arm (2) to flip to a horizontal state and store the mounting arm (2).

9. A CT puncture positioning device according to claim 8, characterized in that, The rotating storage component includes: The top rod (5) has a cavity (51) in the middle of the folding plate (12). The top rod (5) slides horizontally in the cavity (51). A third spring (52) is provided between the end of the top rod (5) near the hinge point of the two sets of folding plates (12) and the side wall of the cavity (51). The other end of the top rod (5) extends out of the cavity (51) and abuts against the vertical frame (11). The slide rail (53) is slidably installed in the cavity (51) and the top rod (5) is provided with a second hinge rod (54) between the slide rail (53). The rack (55) has an installation cavity (141) inside the slide plate (14). The upper end of the first rotating shaft (15) extends into the installation cavity (141) and is connected to a gear ring (56). The rack (55) is slidably installed in the installation cavity (141) and meshes with the gear ring (56). The rack (55) is fixed with a connecting rod (57) that is slidably connected to the slide rail (53).

10. A CT puncture positioning device according to claim 9, characterized in that, The unlocking component includes a lifting plate (6), which slides longitudinally on a U-shaped seat (16) and is connected to a pull wire (38). The upper end of the lifting plate (6) extends into a sliding groove (13) and is machined with an inclined surface. When the U-shaped seat (16) rotates, the inclined surface of the lifting plate (6) will abut against the bottom of the folding plate (12), pushing the lifting plate (6) to move downward.

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