Efficient puncture positioning device guided by CT (Computed Tomography)

Abstract

The invention relates to the technical field of medical apparatuses and instruments, and discloses a CT-guided efficient puncture positioning device which comprises a fixing patch, mounting blocks are fixedly connected to the two sides of the upper portion of the fixing patch, rotating shafts are rotatably connected to the interiors of the two mounting blocks, rotating blocks are fixedly connected to the exteriors of the two rotating shafts, and the rotating blocks are fixedly connected to the exteriors of the rotating shafts. An arc-shaped frame is fixedly connected to the upper portions of the exteriors of the two rotating blocks, an angle inclination adjusting mechanism is arranged outside the mounting block on the left side, an adjusting and fixing mechanism is arranged on the front side of the exterior of the arc-shaped frame, and fixing mechanisms are arranged on the periphery of the exterior of the fixing paste. Through cooperation of the pull ring, the pull rod, the insertion block and the like, unlocking, adjusting and fixing of the front-back inclination angle of the puncture needle are achieved; the angle adjustment in the left-right direction is achieved by moving the sliding block in the sliding groove, and therefore the puncture needle can be flexibly adjusted in the front-back direction and the left-right direction, the multi-angle needle inserting path can be conveniently planned according to CT images, and the puncture deviation and the tissue damage risk are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a CT-guided efficient puncture positioning device. BACKGROUND

[0002] In clinical intervention treatment and biopsy operation, CT-guided puncture has become an important means for positioning lesions, obtaining tissue samples or implementing treatment. In actual operation process, doctors usually need to plan appropriate needle insertion angle and path according to the specific position of lesions in three-dimensional space in CT image, so as to avoid important blood vessels, nerves and other normal tissues as much as possible, however, under the existing technical conditions, the positioning and angle adjustment of puncture needle often depend on the positioning device with relatively simple structure, and such device is mostly designed to adjust the angle in a single direction, and the adjustment of puncture needle in front-back or left-right direction has obvious limitations.

[0003] In actual application, the position of lesions is not always in the ideal plane, and factors such as patient body type difference, organ displacement and respiratory motion also affect the needle insertion path, when the positioning device can only realize single-direction or limited-angle adjustment, doctors often need to loosen, reposition or even replace the puncture path repeatedly, which not only increases the operation steps, but also easily introduces positioning error in the repeated adjustment process, affects the puncture accuracy, and the inflexible angle adjustment also forces the puncture needle to enter the body along a non-optimal path, thereby increasing the risk of injuring surrounding tissues, blood vessels or nerves. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a CT-guided efficient puncture positioning device, which solves the problems that the angle adjustment dimension of the puncture needle of the existing puncture positioning device is limited, it is difficult to realize synchronous adjustment in front-back and left-right directions, and when positioning complex lesions, the needle insertion path is limited and the positioning stability is insufficient, thereby increasing the puncture deviation and the risk of injuring surrounding tissues.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a CT-guided efficient puncture positioning device, comprising a fixed patch, the upper part of the fixed patch is fixedly connected with mounting blocks on both sides, rotating shafts are rotatably connected inside the two mounting blocks, rotating blocks are fixedly connected outside the two rotating shafts, arc-shaped frames are fixedly connected outside the upper part of the two rotating blocks, an angle inclination adjustment mechanism is arranged outside the left mounting block, an adjustment fixing mechanism is arranged outside the front side of the arc-shaped frame, and a fixing mechanism is arranged around the outside of the fixed patch. The angle tilting adjusting mechanism comprises a mounting shell fixedly connected outside the left mounting block, a rotating shaft fixedly connected inside the mounting block, a pull rod slidingly connected inside the mounting shell, a moving block fixedly connected outside the right of the pull rod, a pull ring fixedly connected outside the left of the pull rod, a reset spring sleeved outside the pull rod, a plug fixedly connected outside the right of the moving block, and a sliding block provided outside the arc-shaped frame and fixedly connected with a protruding block.

[0006] Preferably, the adjusting and fixing mechanism comprises an adjusting block fixedly connected outside the protruding block, a fixing rod fixedly connected inside the adjusting block, a lifting block slidingly connected outside the fixing rod, a U-shaped frame fixedly connected to the front of the lifting block, a first arc-shaped clamp fixedly connected to the left of the U-shaped frame, a threaded rod screwedly connected to the right of the U-shaped frame, a second arc-shaped clamp rotatably connected to the left of the threaded rod, a knob fixedly connected to the right of the threaded rod, an extension block fixedly connected to the right of the lifting block, and a pin inserted into the extension block.

[0007] Preferably, the fixing mechanism comprises a plurality of medical tapes provided around the inside of the fixing patch, a plurality of bolts screwedly connected around the inside of the fixing patch, a plurality of nuts fixedly connected around the lower part of the fixing patch, and a plurality of the bolts screwedly connected with the plurality of nuts, wherein the fixing patch is made of non-woven fabric and is provided with a plurality of air holes around the inside thereof.

[0008] Preferably, the left rotating block is provided with a plurality of clamping grooves around the outside thereof, and the plug is inserted into any of the clamping grooves.

[0009] Preferably, the arc-shaped frame is provided with a sliding groove inside the same, and the sliding block is slidingly connected inside the sliding groove.

[0010] Preferably, the adjusting block is provided with a sliding hole in the right side of the same, and the lifting block is slidingly connected inside the sliding hole.

[0011] Preferably, the adjusting block is provided with a plurality of adjusting holes in the right side of the same, and the pin is inserted into any of the adjusting holes.

[0012] Preferably, the extension block is provided with a plug hole inside the same, and the pin is screwedly connected inside the plug hole.

[0013] Preferably, the first arc-shaped clamp and the second arc-shaped clamp are provided with protective pads inside the same, the protective pads are made of rubber material, and the first arc-shaped clamp and the second arc-shaped clamp are provided with a puncture needle in the middle thereof.

[0014] Preferably, the fixing patch has mounting grooves on all four sides, and multiple medical tapes are inserted into the mounting grooves. Each of the multiple medical tapes has a positioning hole inside, and multiple bolts are inserted into the positioning holes.

[0015] This invention provides a highly efficient puncture positioning device under CT guidance. It has the following beneficial effects: 1. When adjusting the forward and backward tilt angle of the puncture needle, the pull ring is pulled to move the pull rod laterally, which in turn moves the moving block and the insertion block. At the same time, the return spring is compressed, causing the insertion block to disengage from the slot of the rotating block. Then, the angle of the puncture needle is adjusted by rotating the arc frame. When the pull ring is released, the insertion block is reinserted into the slot, completing the angle fixation. When adjusting the left and right tilt angle of the puncture needle, it is achieved by moving the slider in the groove, achieving bidirectional flexible adjustment. This device breaks through the limitation of unidirectional tilt in the prior art and can adjust the needle insertion path at multiple angles according to CT images, avoiding target point deviation and reducing the risk of damage to surrounding tissues, blood vessels or nerves by the puncture needle.

[0016] 2. When fixing puncture needles of different specifications, this invention moves the threaded rod by rotating the knob, causing the second arc-shaped clamp to separate from the first arc-shaped clamp. After placing the puncture needle between the two, the knob is rotated in the opposite direction to complete the clamping and fixing. The protective pad in the middle of the clamp can prevent damage to the puncture needle. When adjusting the height of the puncture needle, the pin is removed, and the U-shaped frame is moved to adjust the lifting block up and down along the fixed rod. After reaching the appropriate height, the pin is reinserted. This structure can be adapted to puncture needles of different specifications and achieve flexible height adjustment, avoiding the problem of single device compatibility and improving the accuracy and efficiency of clinical use.

[0017] 3. In this invention, when fixing the puncture needle, the fixing patch is first applied to the puncture site, and then fixed to the patient's skin surface with medical tape. The fixing patch is made of non-woven fabric, which can deform with the skin contour. Together with the medical tape, it ensures that the device fits tightly to the skin, avoiding positioning displacement caused by slight changes in skin curvature or body position, and ensuring the stability of puncture angle and depth parameters. The fixing patch has ventilation holes around its perimeter, which can reduce the skin occlusion area and reduce discomfort caused by prolonged application. When it is necessary to replace the medical tape, the bolt is unscrewed to release it from the nut, the tape is removed from the mounting slot, a new tape is replaced, and the bolt is passed through the positioning hole and re-fixed. This structure combines stability and comfort, and is especially suitable for puncture operations that require long-term positioning under CT guidance. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a schematic diagram of the medical tape structure of the present invention; Figure 3 This is a schematic diagram of the chute structure of the present invention; Figure 4 This is a schematic diagram of the disassembled structure of the puncture needle of the present invention; Figure 5 This is a schematic diagram of the nut structure of the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the medical tape of the present invention; Figure 7 This is a schematic diagram of the arc-shaped frame structure of the present invention; Figure 8 This is a schematic diagram of the knob structure of the present invention; Figure 9 for Figure 3 Enlarged view of the structure at point A in the middle; Figure 10 for Figure 4 Enlarged view of the structure at point B.

[0019] The components are as follows: 1. Fixing adhesive; 2. Medical tape; 3. Mounting block; 4. Rotating block; 5. Arc-shaped frame; 6. Mounting shell; 7. Rotating shaft; 8. Moving block; 9. Pull rod; 10. Return spring; 11. Pull ring; 12. Insertion block; 13. Vent hole; 14. Slot; 15. Slider; 16. Slide groove; 17. Protrusion; 18. Adjusting block; 19. Adjusting hole; 20. Slide hole; 21. Fixing rod; 22. Lifting block; 23. U-shaped frame; 24. First arc-shaped clamp; 25. Knob; 26. Threaded rod; 27. Second arc-shaped clamp; 28. Protective pad; 29. ​​Extension block; 30. Pin; 31. Insertion hole; 32. Puncture needle; 33. Bolt; 34. Nut; 35. Mounting groove; 36. Positioning hole. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Please see the appendix Figure 1 - Appendix Figure 9This invention provides a highly efficient puncture positioning device under CT guidance, including a fixing patch 1. Mounting blocks 3 are fixedly connected to both sides of the upper part of the fixing patch 1. Rotating shafts 7 are rotatably connected inside each of the two mounting blocks 3. Rotating blocks 4 are fixedly connected to the outside of each of the two rotating shafts 7. An arc-shaped frame 5 is fixedly connected to the upper part of the outside of each of the two rotating blocks 4. An angle tilt adjustment mechanism is provided on the outside of the left mounting block 3. This angle tilt adjustment mechanism is used to adjust the front and rear tilt angles of the arc-shaped frame 5 and the subsequent puncture needle 32 to meet the requirements of multi-angle needle insertion. An adjustment and fixing mechanism is provided on the front side of the outside of the arc-shaped frame 5. Fixing mechanisms are provided around the outside of the fixing patch 1. The adjustment and fixing mechanisms are used to adjust the position of the puncture needle 32 along the arc direction of the arc-shaped frame 5 and up and down to adapt to different transverse puncture target points. In addition, a fixing mechanism, specifically medical tape 2, is provided around the outside of the fixing patch 1. The fixing patch 1 is tightly adhered to the patient's puncture site skin by adhesive, and the conformal characteristics of the non-woven fabric material ensure the positioning stability of the entire device. The tilt adjustment mechanism includes a mounting shell 6, which is fixedly connected to the outside of the left mounting block 3. The left rotating shaft 7 is rotatably connected to the inside of the mounting block 3. A pull rod 9 is slidably connected inside the mounting shell 6. A moving block 8 is fixedly connected to the right side of the pull rod 9. A pull ring 11 is fixedly connected to the left side of the pull rod 9. The pull ring 11 facilitates the operation of the operator. A return spring 10 is sleeved on the outside of the pull rod 9. An insert block 12 is fixedly connected to the right side of the moving block 8. A slider 15 is provided on the outside of the arc frame 5. A protrusion 17 is fixedly connected to the outside of the slider 15. Slots 14 are opened on all four sides of the outside of the left rotating block 4. The insert block 12 is inserted into any slot 14 to limit the operation of the rotating block 4. A sliding groove 16 is opened inside the arc frame 5. The slider 15 is slidably connected inside the sliding groove 16. The sliding groove 16 facilitates the movement of the slider 15.

[0022] Specifically, when adjusting the forward and backward tilt angle of the puncture needle 32, the operator first pulls the pull ring 11, causing the pull ring 11 to drive the pull rod 9 to move in the lateral direction. During the movement of the pull rod 9, it moves synchronously through the moving block 8 fixedly connected to its outside. The moving block 8 continues to drive the externally fixed insertion block 12 on its right side to produce a corresponding displacement. At the same time, since the pull rod 9 is fitted with a return spring 10, the movement of the pull rod 9 will compress the return spring 10, putting the return spring 10 in a compressed state, thereby causing the insertion block 12 to gradually disengage from the rotating block 4. With the slot 14 opened, the limiting position between the rotating block 4 and the insertion block 12 is released. Rotating the arc-shaped frame 5 allows the puncture needle 32 to be adjusted in the forward and backward direction around the rotating block 4 under external force. When the puncture needle 32 tilts to a predetermined or suitable angle position, the operator realigns the slot 14 on the outside of the rotating block 4 with the position of the insertion block 12 and releases the pull ring 11. Under the elastic restoring force of the return spring 10, the pull rod 9, the moving block 8, and the insertion block 12 are reset sequentially, allowing the insertion block 12 to re-insert into the corresponding slot 14, thus achieving... The rotating arc frame 5 and the puncture needle 32 are now locked to ensure that the puncture needle 32 remains stable at the set angle. After the front and rear tilt angle adjustment is completed, if it is necessary to adjust the left and right tilt angle of the puncture needle 32, it can be done by pushing the slider 15 to move inside the slide groove 16. The sliding of the slider 15 in the slide groove 16 causes the related components connected to it to move, thereby causing the puncture needle 32 to change angle in the left and right directions. Through the above structure, the device can not only realize the angle adjustment of the puncture needle 32 in the front and rear directions, but also realize the tilt adjustment in the left and right directions, forming a two-way adjustment in both front and rear and left and right directions. Compared with the existing structure that can only perform angle adjustment in one direction, this device can plan and adjust the needle insertion angle in multiple directions according to the specific location of the lesion in three-dimensional space shown by CT images, so that the puncture path is more in line with the clinical operation requirements, reducing the target point deviation problem caused by limited angle adjustment, thereby reducing the risk of damage to surrounding normal tissues, blood vessels and nerves during puncture to a certain extent, and improving the accuracy and safety of puncture positioning.

[0023] Please see the appendix Figure 3 - Appendix Figure 10The adjusting and fixing mechanism includes an adjusting block 18, which is fixedly connected to the outside of the protrusion 17. A fixing rod 21 is fixedly connected inside the adjusting block 18. A lifting block 22 is slidably connected to the outside of the fixing rod 21. A U-shaped frame 23 is fixedly connected to the front of the lifting block 22. A first arc-shaped clamp 24 is fixedly connected to the left side of the inside of the U-shaped frame 23. A threaded rod 26 is threadedly connected to the right side of the inside of the U-shaped frame 23. A second arc-shaped clamp 27 is rotatably connected to the left side of the threaded rod 26. The first and second arc-shaped clamps 24 and 27 facilitate the fixing of the puncture needle 32. A knob 25 is fixedly connected to the right side of the threaded rod 26 for easy operation. An extension block 29 is fixedly connected to the right side of the lifting block 22. A pin 30 is inserted into the extension block 29. A sliding hole 20 is provided on the right side of the part, and the lifting block 22 is slidably connected inside the sliding hole 20. The sliding hole 20 facilitates the movement of the lifting block 22. An adjustment hole 19 is provided on the right side of the outer side of the adjustment block 18. The pin 30 is inserted into any adjustment hole 19. The adjustment hole 19 facilitates the installation of the pin 30. An insertion hole 31 is provided inside the extension block 29. The pin 30 is threaded into the insertion hole 31, which limits the operation of the lifting block 22. The first arc-shaped clamp 24 and the second arc-shaped clamp 27 are both provided with protective pads 28. Both protective pads 28 are made of rubber. A puncture needle 32 is provided in the middle of the first arc-shaped clamp 24 and the second arc-shaped clamp 27. The rubber protective pads 28 protect the puncture needle 32 and prevent wear on the outside of the puncture needle 32.

[0024] Specifically, when fixing puncture needles 32 of different specifications, the operator first manually rotates knob 25. Rotation of knob 25 causes the threaded rod 26, which is threaded to it, to move axially. As the threaded rod 26 moves, the second arc-shaped clamp 27, which is rotatably connected to the outer left side of the threaded rod 26, moves synchronously, causing the second arc-shaped clamp 27 to gradually move away from the first arc-shaped clamp 24, thus creating sufficient space between them. At this point, the puncture needle 32 is placed in the middle position between the first arc-shaped clamp 24 and the second arc-shaped clamp 27, so that the puncture needle 32 is in a relatively centered state. Then, knob 25 is rotated in the opposite direction, causing the threaded rod 26 to move in the opposite direction. 6. During the movement, the second arc-shaped clamp 27 moves closer to the first arc-shaped clamp 24. Through the cooperation of the first arc-shaped clamp 24 and the second arc-shaped clamp 27, the puncture needle 32 is clamped and fixed. To avoid damage to the puncture needle 32 body during the fixing process, protective pads 28 are provided at the middle positions of both the first arc-shaped clamp 24 and the second arc-shaped clamp 27. The protective pads 28 contact the outer wall of the puncture needle 32 during clamping, serving both a protective function and increasing friction to prevent the puncture needle 32 from slipping after being fixed, thus ensuring the reliability and stability of the fixation. Through the above structural design, the clamping distance can be flexibly adjusted according to the diameter of the puncture needle 32, making... The device can accommodate puncture needles 32 of different specifications. When the height of the puncture needle 32 needs to be adjusted, the operator can first remove the pin 30 from the inside of the adjustment hole 19 to release the limit between the U-shaped frame 23 and the fixed rod 21. Then, by moving the U-shaped frame 23, it drives the lifting block 22 to move up and down along the outside of the fixed rod 21, thereby changing the overall height position of the puncture needle 32. When the lifting block 22 moves to the required height, the pin 30 is reinserted into the corresponding adjustment hole 19 to limit and fix the U-shaped frame 23 again, thus completing the height adjustment operation of the puncture needle 32. The combination of the structure not only enables convenient fixation of puncture needles 32 of different specifications, but also allows for flexible adjustment of the height of the puncture needles 32 according to actual usage needs. This avoids the problems of traditional devices that can only accommodate a single type of puncture needle 32 or have a cumbersome height adjustment process. This structure eliminates the need to repeatedly replace or configure multiple sets of devices for different types of puncture needles 32. At the same time, it can adjust the height of the puncture needles 32 according to the actual situation of patients with different body types or different lesion depths, thereby improving the compatibility and efficiency of the device in clinical applications, and reducing puncture deviations caused by needle type or height mismatch to a certain extent, further improving the accuracy and safety of puncture operations.

[0025] Please see the appendix Figure 1 - Appendix Figure 6The fixing mechanism includes multiple medical tapes 2, which are arranged around the inside of the fixing patch 1. Bolts 33 are threadedly connected around the inside of the fixing patch 1, and nuts 34 are fixedly connected around the bottom of the fixing patch 1. The multiple bolts 33 and nuts 34 are threadedly connected. The fixing patch 1 is made of non-woven fabric. Ventilation holes 13 are provided around the inside of the fixing patch 1, and installation grooves 35 are provided around the inside of the fixing patch 1. The multiple medical tapes 2 are inserted into the multiple installation grooves 35. The installation grooves 35 facilitate the installation of the medical tapes 2. Positioning holes 36 are provided inside the multiple medical tapes 2, and the multiple bolts 33 are inserted into the positioning holes 36 to fix the medical tapes 2.

[0026] Specifically, when fixing the puncture needle 32 to the patient's actual puncture site, the procedure involves first covering and attaching the fixation patch 1 to the predetermined puncture area, ensuring full contact between the fixation patch 1 and the patient's skin surface. Then, medical tape 2 is applied to the patient's skin and used in conjunction with the fixation patch 1 for fixation. Because the fixation patch 1 is made of non-woven fabric, it possesses a certain degree of flexibility and extensibility, allowing it to deform with the natural contours and local contours of the patient's skin during application, thus better conforming to the skin surface. Through the combined action of the fixation patch 1 and the medical tape 2, the device can be stably attached to the puncture area, reducing the overall positional shift of the device caused by the curved structure of the skin or slight changes in the patient's position. Simultaneously, multiple ventilation holes 13 are evenly distributed around the inside of the fixation patch 1. After the device is attached to the skin surface, the ventilation holes 13 provide a certain airflow channel, reducing the feeling of confinement caused by large-area skin coverage and minimizing stuffiness, dampness, or local skin discomfort during prolonged application. This allows the patient to maintain a relatively comfortable state during the puncture procedure. When replacing with tape 2, first rotate bolt 33 to gradually unscrew and disengage it from the nut 34 fixed at the bottom of the fixing patch 1. Then, remove the original medical tape 2 from the mounting groove 35 inside the fixing patch 1. After removal, insert the new medical tape 2 into the fixing patch 1 along the direction of the mounting groove 35, aligning the positioning hole 36 on the medical tape 2 with the position of the nut 34. Then, pass bolt 33 through the positioning hole 36 and screw it back into the nut 34 to complete the re-fixing of the medical tape 2. The entire replacement process is seamless. The fixation patch 1 needs to be disassembled. Through the above structure and operation method, the fixation patch 1, with the conformal fitting characteristics of the non-woven fabric material, can form a relatively stable fit with the patient's skin, avoiding the positioning deviation caused by the traditional rigid positioning structure when facing changes in skin curvature or slight body position adjustments. At the same time, the setting of the vent 13 reduces the closed contact area of ​​the skin while ensuring the fixation effect, improving the patient's comfort throughout the puncture process. It is especially suitable for application scenarios such as CT-guided puncture, where the operation time is relatively long and multiple scans are required to confirm the position.

[0027] Working principle: When adjusting the tilt angle of the puncture needle 32, the pull ring 11 is first pulled to move the pull rod 9 laterally. As the pull rod 9 moves, the externally fixed moving block 8 moves synchronously. As the moving block 8 moves, the externally fixed insertion block 12 on the right side moves, simultaneously pressing the return spring 10 sleeved on the outside of the pull rod 9, causing the insertion block 12 to disengage from the slot 14 inside the rotating block 4. Then, the rotating arc frame 5 tilts the puncture needle 32 at a suitable angle. After tilting to the appropriate position, the slot 14 outside the rotating block 4 aligns with the insertion block 12. Finally, releasing the pull ring 11, under the reaction force of the return spring 10, causes the insertion block 12 to insert. In the corresponding slot 14, the angle of the puncture needle 32 can be fixed. Then, when adjusting the left and right tilt angle of the puncture needle 32, the slider 15 can be moved inside the slide groove 16. This makes it easy to adjust the front and back and left and right tilt angles of the puncture needle 32. The device can realize bidirectional flexible adjustment of the front and back and left and right tilt angles of the puncture needle 32, which solves the limitation of the existing technology that the angle adjustment dimension is single and can only tilt in one direction. It can plan multi-angle needle insertion paths according to the three-dimensional spatial position of the lesion presented by CT image, avoid target point deviation caused by limited angle adjustment, and reduce the risk of the puncture needle 32 damaging the surrounding normal tissues, blood vessels or nerves. When fixing puncture needles 32 of different sizes, manually turn knob 25 to move threaded rod 26. Threaded rod 26 moves the second arc-shaped clamp 27, which is rotatably connected to the outer left side, causing the second arc-shaped clamp 27 to separate from the first arc-shaped clamp 24. Then, place the puncture needle 32 in the middle of the second arc-shaped clamp 27 and the first arc-shaped clamp 24. Then, turn knob 25 to move threaded rod 26. The movement of threaded rod 26 moves the threaded rod 26, which is rotatably connected to the outer left side. The puncture needle 32 is fixed by the cooperation of the second arc-shaped clamp 27 and the first arc-shaped clamp 24. The protective pad 28 in the middle of the first arc-shaped clamp 24 and the second arc-shaped clamp 27 can protect the puncture needle 32 from damage. When it is necessary to adjust the height of the puncture needle 32, remove pin 30 from the inside of adjustment hole 19, and then move U-shaped frame 23 to move lifting block 22 outside the fixing rod 21. After moving the device up and down to the appropriate height, inserting the pin 30 into the corresponding adjustment hole 19 completes the height adjustment. This allows for easy fixation of puncture needles 32 of different specifications while facilitating height adjustment. This structure enables convenient fixation of puncture needles 32 of different specifications and flexible height adjustment, solving the problems of limited compatibility of existing puncture needle fixation devices, which can only fix specific models of puncture needles 32, and the inconvenience of height adjustment, making it difficult to adapt to patients of different body types or lesions of different depths. It eliminates the need for multiple devices for different models of puncture needles 32 and allows for flexible adjustment of the puncture needle height according to the lesion depth, accurately matching the puncture needs of patients of different body types. This improves the clinical compatibility and operational efficiency of the device, reduces puncture deviations caused by insufficient height or needle type compatibility, and further ensures the accuracy and safety of puncture positioning.

[0028] When fixing the puncture needle 32 to the patient's puncture site, first place the fixing patch 1 at the puncture site, then attach the medical tape 2 to the patient's skin. The fixing patch 1 is made of non-woven fabric and can deform with the contour of the patient's skin. Combined with the medical tape 2, this ensures a tight fit between the device and the skin, avoiding positioning deviations caused by slight changes in skin curvature or body position, as is common with traditional rigid positioning devices. This ensures that the angle and depth parameters of the puncture adjustment components do not deviate. Additionally, the fixing patch 1 has ventilation holes 13 around its interior. When it is necessary to replace the medical tape 2, first rotate the bolt 33 to disengage it from the nut 34 fixed at the bottom of the fixing patch 1, then remove the medical tape 2 from inside the fixing patch 1. The medical tape 2 is removed from the mounting slot 35. When installing the new medical tape 2, it is inserted into the mounting slot 35, and then the bolt 33 is passed through the positioning hole 36 inside the medical tape 2 and screwed into the nut 34. This achieves the conformal fitting characteristics of the non-woven fabric material of the fixing patch 1, which allows the device to fit closely to the skin. This avoids the positioning deviation caused by the curvature of the skin or slight changes in body position of traditional rigid structures, ensuring the stability of the puncture angle and depth parameters. At the same time, the ventilation holes 13 around the perimeter can reduce the skin closure contact area, reduce skin discomfort such as stuffiness and redness caused by prolonged adhesion, and improve patient comfort. It is especially suitable for scenarios such as CT-guided puncture, which have long operation time and require repeated scanning.

Claims

1. A highly efficient puncture positioning device under CT guidance, comprising a fixation patch (1), characterized in that, The fixing sticker (1) is fixedly connected to two mounting blocks (3) on both sides of the upper part. The two mounting blocks (3) are rotatably connected to a rotating shaft (7) inside. The two rotating shafts (7) are fixedly connected to a rotating block (4) on the outside. The two rotating blocks (4) are fixedly connected to an arc frame (5) on the upper part of the outside. The mounting block (3) on the left side is provided with an angle tilt adjustment mechanism. The arc frame (5) is provided with an adjustment and fixing mechanism on the front side of the outside. The fixing sticker (1) is provided with a fixing mechanism around its outer perimeter. The angle tilt adjustment mechanism includes a mounting shell (6), which is fixedly connected to the outside of the mounting block (3) on the left side. The rotating shaft (7) on the left side is rotatably connected to the inside of the mounting block (3). A pull rod (9) is slidably connected inside the mounting shell (6). A moving block (8) is fixedly connected to the right side of the pull rod (9). A pull ring (11) is fixedly connected to the left side of the pull rod (9). A return spring (10) is sleeved on the outside of the pull rod (9). A plug (12) is fixedly connected to the right side of the moving block (8). A slider (15) is provided on the outside of the arc frame (5). A protrusion (17) is fixedly connected to the outside of the slider (15).

2. The efficient puncture positioning device under CT guidance according to claim 1, characterized in that, The adjustment and fixing mechanism includes an adjustment block (18), which is fixedly connected to the outside of the protrusion (17). A fixing rod (21) is fixedly connected inside the adjustment block (18). A lifting block (22) is slidably connected to the outside of the fixing rod (21). A U-shaped frame (23) is fixedly connected to the front side of the lifting block (22). A first arc-shaped clamp (24) is fixedly connected to the left side inside the U-shaped frame (23). A threaded rod (26) is threadedly connected to the right side inside the U-shaped frame (23). A second arc-shaped clamp (27) is rotatably connected to the left side outside the threaded rod (26). A knob (25) is fixedly connected to the right side outside the threaded rod (26). An extension block (29) is fixedly connected to the right side outside the lifting block (22). A pin (30) is inserted inside the extension block (29).

3. The efficient puncture positioning device under CT guidance according to claim 1, characterized in that, The fixing mechanism includes multiple medical tapes (2), which are arranged around the inside of the fixing patch (1). Bolts (33) are threaded around the inside of the fixing patch (1), and nuts (34) are fixedly connected around the lower part of the fixing patch (1). The multiple bolts (33) and the multiple nuts (34) are threadedly connected. The fixing patch (1) is made of non-woven fabric, and ventilation holes (13) are provided around the inside of the fixing patch (1).

4. The efficient puncture positioning device under CT guidance according to claim 1, characterized in that, The rotating block (4) on the left side has slots (14) on all four sides, and the insert block (12) is inserted into any of the slots (14).

5. The efficient puncture positioning device under CT guidance according to claim 1, characterized in that, The arc-shaped frame (5) has a groove (16) inside, and the slider (15) is slidably connected inside the groove (16).

6. The efficient puncture positioning device under CT guidance according to claim 2, characterized in that, The adjusting block (18) has a sliding hole (20) on its outer right side, and the lifting block (22) is slidably connected inside the sliding hole (20).

7. The efficient puncture positioning device under CT guidance according to claim 2, characterized in that, Each of the adjustment blocks (18) has an adjustment hole (19) on its outer right side, and the pin (30) is inserted into any of the adjustment holes (19).

8. The efficient puncture positioning device under CT guidance according to claim 2, characterized in that, The extension block (29) has an insertion hole (31) inside, and the pin (30) is threaded into the insertion hole (31).

9. The efficient puncture positioning device under CT guidance according to claim 2, characterized in that, The first arc-shaped clamp (24) and the second arc-shaped clamp (27) are both provided with protective pads (28), and both protective pads (28) are made of rubber. The first arc-shaped clamp (24) and the second arc-shaped clamp (27) are provided with puncture needles (32) in the middle.

10. The efficient puncture positioning device under CT guidance according to claim 3, characterized in that, The fixing patch (1) has mounting grooves (35) on all four sides inside. Multiple medical tapes (2) are inserted into the mounting grooves (35). Multiple medical tapes (2) have positioning holes (36) inside. Multiple bolts (33) are inserted into the positioning holes (36).

Images