A body surface positioning device for CT-guided puncture with flexible adjustment

Abstract

This invention discloses a CT-guided puncture surface positioning device that is easy to adjust flexibly. It includes a positioning ring, a sliding assembly, a guide tube, a guide laser, a rocker arm, a support rod, and a support portion. The positioning ring is used to fit around the area on the patient's skin where puncture is required. The sliding assembly is mounted on the positioning ring and can slide on it. The guide tube is located at the top of the sliding assembly, and the guide tube and the sliding assembly are rotatably connected via a connecting assembly. The guide laser is located at the tail end of the guide tube, and the laser emitted by the guide laser is aligned with the axis of the guide tube. The bottom end of the rocker arm is rotatably connected to the positioning ring. The support rod is rotatably connected to the top end of the rocker arm. The support portion is connected to the bottom end of the support rod and is used to support the entire positioning device. This invention, by fitting the positioning ring to the patient's skin, can pinpoint the location where puncture is required.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a CT-guided puncture surface positioning device that is easy to adjust flexibly. Background Technology

[0002] CT-guided biopsy is an important tool for clinical diagnosis and treatment, widely used in tumor biopsies, interventional procedures, and fluid drainage. Its core requirement is precise surface localization to achieve targeted needle insertion, avoiding damage to surrounding healthy tissue. However, existing surface localization devices for CT-guided biopsy still have many technical shortcomings, severely affecting puncture accuracy and surgical efficiency.

[0003] Traditional methods of surface localization often involve drawing lines directly with a marker pen, attaching metal wires, or using simple marker stickers. These methods lack a stable fixing structure, and the markers are easily displaced due to changes in patient position, skin traction, or disinfection procedures, leading to significant positioning errors. This often necessitates multiple CT scans for repositioning, prolonging the procedure and increasing the patient's radiation dose. To address this issue, some existing technologies have proposed structured positioning devices using a sliding rail adjustment structure to achieve lateral and longitudinal positioning. However, these devices only allow for two-dimensional adjustment and cannot accommodate fine-tuning of the puncture angle. Furthermore, the fixation method involves direct binding with straps, which exerts significant pressure on the patient's skin, resulting in poor comfort and difficulty adapting to the body contours of patients with different body types.

[0004] Another type of existing multifunctional CT puncture positioning device, while adding height adjustment, suffers from problems such as large adjustment gaps and insufficient positioning accuracy due to its gear-driven adjustment mechanism. Furthermore, the imaging marker is fixedly connected to the device body, requiring overall disinfection during sterilization, which is cumbersome and prone to bacterial growth. In addition, existing positioning devices generally suffer from limited adjustment dimensions, complex locking mechanisms, and insufficient imaging clarity. When puncturing obese patients, elderly patients, or patients with irregular body surfaces, they struggle to achieve precise positioning, leading to increased puncture failure rates and even complications such as bleeding and infection.

[0005] With the development of medical technology, clinicians have placed higher demands on the positioning accuracy and ease of operation of CT-guided puncture. There is an urgent need for a body surface positioning device with multi-dimensional flexible adjustment capabilities, accurate positioning, strong adaptability and easy disinfection, in order to solve the shortcomings of existing technologies and improve the safety and efficiency of puncture surgery. Summary of the Invention

[0006] The purpose of this invention is to provide a CT-guided puncture surface positioning device that is easy to adjust flexibly, aiming to improve the problems of inflexible adjustment, low positioning accuracy, poor adaptability and cumbersome operation of existing CT-guided puncture surface positioning devices.

[0007] This invention is implemented as follows: A CT-guided puncture surface positioning device that is easy to adjust flexibly includes a positioning ring for fitting around the area of ​​the patient's skin where puncture is required; A sliding component, which is mounted on a positioning ring and is slidable on the positioning ring; A guide tube is disposed on the top of the sliding assembly, and the guide tube and the sliding assembly are rotatably connected by a transition assembly; A guide laser light is provided at the tail end of the guide tube, and the laser emitted by the guide laser light is on the same straight line as the axis of the guide tube. A rocker arm, the bottom end of which is rotatably connected to a positioning ring; A support rod, which is rotatably connected to the top of the rocker arm; The support part is connected to the bottom end of the support rod and is used to support the entire positioning device.

[0008] Preferably, the upper surface of the positioning ring is provided with a guide rail, the guide rail has a ring structure and a T-shaped cross-section, the side of the positioning ring is provided with a connecting rod, the connecting rod is bent upward and the top of the connecting rod is provided with a ball head.

[0009] Preferably, the sliding assembly includes a slider and an adjusting plate. The bottom of the slider has a sliding opening that engages with the guide rail. A first clamping knob is provided on the side of the slider aligned with the sliding opening. An adjusting hole is provided longitudinally at one end of the slider facing the inner side of the positioning ring. A second clamping knob is provided on the side of the slider aligned with the adjusting hole. The adjusting plate is inserted into the adjusting hole, and a connector is provided on the top of the adjusting plate. A through hole is provided in the middle of the connector.

[0010] Preferably, the guide tube has a connecting rod at the tail end of its side, and the connecting rod is arranged parallel to the axis of the guide tube; the guide tube has an adapter at the bottom of its side, and adapter posts are symmetrically arranged on both sides of the adapter. The adapter posts are engaged with both sides of the connecting shaft, and the adapter posts have pin holes in the middle, which are aligned with through holes.

[0011] Preferably, the adapter assembly includes a shaft and a third clamping knob. One end of the shaft is provided with a limiting end plate, and the other end is provided with a stud. The end of the third clamping knob facing the stud is provided with a connecting post. The connecting post is provided with a threaded groove in the middle, and the threaded groove is connected to the stud. After the third clamping knob is tightened, the tilt angle of the guide tube can be fixed.

[0012] Preferably, the guide laser light has a switch on its side and a charging slot at its tail end. The guide laser head has a connector on its side, a socket in the middle of the connector, the socket being fitted onto the connecting rod, and a fourth clamping knob aligned with the socket.

[0013] Preferably, the top of the rocker arm is provided with a rotary joint, one end face of the rotary joint is provided with a first bearing, and the middle of the other end face of the rotary joint is provided with a fifth clamping knob; the bottom end of the rocker arm is provided with a mounting joint, the bottom surface of the mounting joint is provided with a ball groove, and the mounting joint is provided with a sixth clamping knob aligned with the ball groove.

[0014] Preferably, the support rod is L-shaped, and the bottom end of the support rod is provided with a hexagonal body, the bottom end of the hexagonal body is provided with a base plate, and the bottom surface of the base plate is provided with a square insert; the other end of the support rod is provided with a mounting post, the end of the mounting post is provided with a mounting shaft, and the mounting shaft is interference-fitted with the first bearing.

[0015] Preferably, the support part is configured as a clamping assembly, which includes a clamping head, a rotating column, a pressure plate, and a clamping screw; the clamping head is generally U-shaped, and the bottom surface of the clamping head is provided with a threaded hole, the top surface of the clamping head is provided with a support, the middle of the support is provided with a second bearing, the side of the support is provided with a seventh clamping knob near the top, the bottom end of the rotating column is provided with a transition shaft, the transition shaft is interference-fitted with the second bearing, the top end of the rotating column is provided with a first square groove, and the square insert is inserted into the inner side of the first square groove; the rotating column is provided with a first set screw aligned with the first square groove; the threaded hole is connected to the clamping screw, the top end of the clamping screw is provided with a connecting shaft, the connecting shaft is rotatably connected to the pressure plate, and the bottom end of the clamping screw is provided with a rotating handle.

[0016] Preferably, the support part is configured as a movable component, which includes a movable base and a lifting rod. The movable base is provided with casters at the bottom corners and a support rod at the top center of the movable base. The support rod is provided with a lifting groove in the middle and an eighth pressing knob is provided on the side of the support rod near the top. The lifting rod is inserted into the lifting groove and a support column is provided at the top of the lifting rod. The support column is provided with a second square groove in the middle and the square insert is inserted into the second square groove.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention uses a positioning ring that fits onto the patient's body surface to define the puncture site. The positioning ring is equipped with a sliding component, a guide tube, and a guide laser light. These structures guide the puncture, allowing the puncture needle to be inserted at a stable angle to the preset puncture location. This ensures puncture accuracy and assists staff in accurately performing punctures on patients. Furthermore, the positioning ring can be flexibly adjusted with the cooperation of a rocker arm and a support rod, adapting to any part of the patient's body, greatly improving its flexibility and applicability.

[0018] 2. By setting up a clamping component, the present invention can be fixed to the side of the CT examination table, which facilitates stable support for the entire device.

[0019] 3. By setting up a movable component, the present invention enables the entire device to move and be used flexibly, facilitating support when the entire device cannot be fixed on the examination bed, so as to ensure that its flexibility and applicability are not affected. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 3 This is a schematic diagram of the positioning ring of the present invention; Figure 4 This is a schematic diagram of the structure of the sliding component of the present invention; Figure 5 This is a schematic diagram of the structure of the guide tube of the present invention; Figure 6 This is a schematic diagram of the structure of the adapter component of the present invention; Figure 7 This is a schematic diagram of the structure of the guide laser lamp of the present invention; Figure 8 This is a schematic diagram of the rocker arm of the present invention; Figure 9 This is a schematic diagram of the support rod of the present invention; Figure 10 This is a schematic diagram of the structure of the clamping assembly of the present invention; Figure 11 This is a schematic diagram of the structure of the moving component of the present invention.

[0021] In the diagram: 1. Positioning ring; 11. Guide rail; 12. Connecting rod; 13. Ball head; 2. Sliding assembly; 21. Slider; 211. First clamping knob; 212. Slide opening; 213. Adjustment hole; 214. Second clamping knob; 22. Adjustment plate; 221. Connector; 222. Through hole; 3. Guide tube; 31. Connecting rod; 32. Adapter; 33. Adapter post; 34. Pin hole; 4. Adapter assembly; 41. Shaft; 411. Limiting end plate; 412. Stud; 42. Third clamping knob; 421. Connecting post; 422. Threaded groove; 5. Guide laser light; 51. Switch; 52. Charging slot; 53. Socket; 54. Socket hole; 55. Fourth clamping knob; 6. Rocker arm; 61. Rotary joint; 62. First bearing; 63. Fifth clamping knob; 64. Mounting connector; 65. Ball groove; 66. Sixth clamping knob; 7. Support rod; 71. Hexagonal body; 72. Base plate; 73. Square insert; 74. Mounting column; 75. Mounting shaft; 8. Clamping assembly; 81. Collet; 811. Threaded hole; 812. Support platform; 813. Seventh clamping knob; 814. Second bearing; 82. Rotating column; 821. Adapter shaft; 822. First set screw; 823. First square groove; 83. Pressure plate; 84. Clamping screw; 841. Connecting shaft; 842. Rotating handle; 9. Moving assembly; 91. Moving base; 911. Caster wheel; 912. Support rod; 913. Eighth clamping knob; 914. Lifting groove; 92. Lifting rod; 921. Support column; 922. Second square groove. Detailed Implementation

[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details: Example 1

[0024] like Figure 1As shown, a CT-guided puncture surface positioning device for flexible adjustment includes a positioning ring 1, a sliding assembly 2, a guide tube 3, a guide laser lamp 5, a rocker arm 6, a support rod 7, and a support part. The positioning ring 1 is used to fit around the puncture site on the patient's skin, facilitating the puncture procedure for medical personnel. The sliding assembly 2 is mounted on the positioning ring 1 and can slide on it. The guide tube 3 is located on top of the sliding assembly 2, and the guide tube 3 and the sliding assembly 2 are rotatably connected via a transition assembly 4. The sliding assembly 2 facilitates the movement of the guide tube 3 along the positioning ring 1, thereby allowing the guide rod to be adjusted around the puncture site and the guide tube 3 to be tilted according to puncture requirements, thus assisting medical personnel in the puncture operation. The guide laser lamp 5 is located at the tail end of the guide tube 3, and the laser emitted by the guide laser lamp 5 is on the same straight line as the axis of the guide tube 3. This structure allows for precise laser-guided puncture positioning, ensuring that the puncture needle can accurately puncture the patient. The bottom end of the rocker arm 6 is rotatably connected to the positioning ring 1; the support rod 7 is rotatably connected to the top end of the rocker arm 6. This structure facilitates the support rod 7 and the rocker arm 6 in supporting the positioning ring 1, making the positioning ring 1 easier to use. The support part is connected to the bottom end of the support rod 7 to support the entire positioning device, facilitating the use of the entire device.

[0025] like Figure 3 As shown, the upper surface of the positioning ring 1 is provided with a guide rail 11. The guide rail 11 has a ring structure and a T-shaped cross-section. The guide rail 11 facilitates the guidance of the sliding component 2, making it convenient to use. The side of the positioning ring 1 is provided with a connecting rod 12, which is curved upward. The top of the connecting rod 12 is provided with a ball head 13. The connecting rod 12 and the ball head 13 facilitate the rotational connection between the positioning ring 1 and the rocker arm 6, allowing for flexible adjustment of the positioning ring 1.

[0026] like Figure 4As shown, the sliding assembly 2 includes a slider 21 and an adjusting plate 22. The bottom of the slider 21 has a sliding opening 212, which engages with the guide rail 11, facilitating the movement of the slider 21 along the guide rail. A first clamping knob 211 is located on the side of the slider 21, aligned with the sliding opening 212; the first clamping knob 211 is used to fix the position of the slider 21, stabilizing it at a designated position on the guide rail 11. An adjusting hole 213 is longitudinally located at the end of the slider 21 facing the inner side of the positioning ring 1; the adjusting hole 213 facilitates the installation of the adjusting plate 22, allowing for easy up-and-down adjustment and use of the adjusting plate 22. Adjusting the adjusting plate 22 up and down allows for adjustment of the laser pointing position. A second clamping knob 214 is located on the side of the slider 21, aligned with the adjusting hole 213; the adjusting plate 22 is inserted into the adjusting hole 213, and the second clamping knob 214 is used to fix the adjusted plate 22 in its raised position. Furthermore, the top of the adjusting plate 22 is provided with a connector 221, and the middle of the connector 221 is provided with a through hole 222. The cooperation between the connector 221 and the through hole 222 facilitates the rotatable connection between the adjusting plate 22 and the guide tube 3, and facilitates the flexible use of the guide tube 3.

[0027] like Figure 5 As shown, a connecting rod 31 is provided at the tail end of the side of the guide tube 3, and the connecting rod 31 is arranged parallel to the axis of the guide tube 3; the connecting rod 12 is for easy installation and use of the guide laser light 5. An adapter 32 is provided at the bottom of the side of the guide tube 3, and adapter posts 33 are symmetrically arranged on both sides of the adapter 32. The adapter posts 33 engage with both sides of the connecting shaft 841. The adapter 32, in conjunction with the adapter posts 33, facilitates the engagement of the guide tube 3 with both sides of the connector 221, facilitating the rotation and use of the guide tube 3. A pin hole 34 is provided in the middle of the adapter post 33, which is aligned with the through hole 222, allowing the adapter assembly 4 to pass through the pin hole 34 and the through hole 222, thereby facilitating the rotational connection between the guide tube 3 and the connector 221.

[0028] like Figure 6 As shown, the adapter assembly 4 includes a shaft 41 and a third clamping knob 42. One end of the shaft 41 has a limiting end plate 411, and the other end has a stud 412. The limiting end plate 411 facilitates mutual positioning between the shaft 41 and the adapter post 33. The end of the third clamping knob 42 facing the stud 412 has a connecting post 421. The connecting post 421 has a threaded groove 422 in its middle, which connects to the stud 412. The connecting post 421, in conjunction with the threaded groove 422, facilitates connection with the stud 412. By tightening the third clamping knob 42, the connecting post 421 abuts against the adapter post 33, thereby adjusting and fixing the tilt angle of the guide tube 3. Tightening the third clamping knob 42 fixes the tilt angle of the guide tube 3.

[0029] like Figure 7As shown, a switch 51 is provided on the side of the guide laser lamp 5 for convenient control of its opening and closing. A charging slot 52 is also provided at the tail end of the guide laser lamp 5 for convenient charging, facilitating its use. A socket 53 is provided on the side of the guide laser head, with a connecting hole 54 in the center. The connecting hole 54 is fitted onto the connecting rod 31. When the socket 53 and connecting hole 54 are fitted onto the connecting rod 31, the laser emitted by the guide laser head is aligned with the axis of the guide tube 3, thus accurately guiding the puncture needle. A fourth clamping knob 55 is provided at the position of the socket 53 aligned with the connecting hole 54, facilitating the fixing of the guide laser lamp 5's position.

[0030] like Figure 8 As shown, the top of the rocker arm 6 is equipped with a rotating joint 61. One end face of the rotating joint 61 is equipped with a first bearing 62. The rotating joint 61, in conjunction with the first bearing 62, facilitates connection with the support rod 7, enabling the rotation and use of the rocker arm 6. A fifth clamping knob 63 is located in the middle of the other end face of the rotating joint 61. The fifth clamping knob 63 is used to fix the tilt angle of the rocker arm 6, facilitating its use. The bottom of the rocker arm 6 is equipped with a mounting joint 64. The bottom surface of the mounting joint 64 is equipped with a ball groove 65. The mounting joint 64, in conjunction with the ball groove 65, facilitates connection with the ball head 13, enabling the rotation and use of the positioning ring 1. A sixth clamping knob 66 ​​is located on the mounting joint 64, aligned with the ball groove 65. The second clamping knob 214 is used to fix the angle of the positioning ring 1, ensuring its stable use.

[0031] like Figure 9 As shown, the support rod 7 is L-shaped, designed to support various components. The bottom end of the support rod 7 has a hexagonal body 71, with a base plate 72 at its bottom end. The bottom surface of the base plate 72 has a square insert 73. The base plate 72, in conjunction with the square insert 73, facilitates connection with the support unit, simplifying the assembly and use of the entire support rod 7. The other end of the support rod 7 has a mounting post 74, with a mounting shaft 75 at its end. The mounting shaft 75 is interference-fitted with the first bearing 62. The mounting post 74, in conjunction with the mounting shaft 75, facilitates connection with the rotating joint 61, thus allowing for easy connection between the rocker arm 6 and the support rod 7.

[0032] like Figure 1 and Figure 10As shown, the support part is a clamping assembly 8, which is conveniently fixed to the edge of the CT examination table, thus providing stable support for various components. The clamping assembly 8 includes a clamp head 81, an adapter post 33, a pressure plate 83, and a clamping screw 84. The clamp head 81 is U-shaped, which facilitates its engagement with the edge of the CT examination table. The bottom surface of the clamp head 81 has a threaded hole 811, which facilitates connection with the clamping screw 84. The top surface of the clamp head 81 has a base 812, and the middle of the base 812 has a second bearing 814. The base 812, in conjunction with the second bearing 814, facilitates rotational connection with the adapter post 33. Near the top of the base 812, there is a seventh clamping knob 813, which facilitates fixing the angle of the adapter post 33. The bottom of the adapter post 33 is provided with an adapter shaft 821, which is interference-fitted with the second bearing 814. The top of the adapter post 33 is provided with a first square groove 823, into which a square insert 73 is inserted. The adapter post 33 is provided with a first set screw 822 aligned with the first square groove 823. The first set screw 822 facilitates the stable connection of the support rod 7 to the adapter post 33. A threaded hole 811 is connected to a clamping screw 84. The top of the clamping screw 84 is provided with a connecting shaft 841, which is rotatably connected to the pressure plate 83. The clamping screw 84 facilitates the clamping plate 83 to be pressed against the edge of the CT examination table. The bottom of the clamping screw 84 is provided with a rotating handle 842, which facilitates the rotation of the clamping screw 84, thereby facilitating the clamping screw 84 to move the pressure plate 83 up and down. Example 2

[0033] like Figure 2As shown, a CT-guided puncture surface positioning device for flexible adjustment includes a positioning ring 1, a sliding assembly 2, a guide tube 3, a guide laser lamp 5, a rocker arm 6, a support rod 7, and a support part. The positioning ring 1 is used to fit around the puncture site on the patient's skin, facilitating the puncture procedure for medical personnel. The sliding assembly 2 is mounted on the positioning ring 1 and can slide on it. The guide tube 3 is located on top of the sliding assembly 2, and the guide tube 3 and the sliding assembly 2 are rotatably connected via a transition assembly 4. The sliding assembly 2 facilitates the movement of the guide tube 3 along the positioning ring 1, thereby allowing the guide rod to be adjusted around the puncture site and the guide tube 3 to be tilted according to puncture requirements, thus assisting medical personnel in the puncture operation. The guide laser lamp 5 is located at the tail end of the guide tube 3, and the laser emitted by the guide laser lamp 5 is on the same straight line as the axis of the guide tube 3. This structure allows for precise laser-guided puncture positioning, ensuring that the puncture needle can accurately puncture the patient. The bottom end of the rocker arm 6 is rotatably connected to the positioning ring 1; the support rod 7 is rotatably connected to the top end of the rocker arm 6. This structure facilitates the support rod 7 and the rocker arm 6 in supporting the positioning ring 1, making the positioning ring 1 easier to use. The support part is connected to the bottom end of the support rod 7 to support the entire positioning device, facilitating the use of the entire device.

[0034] like Figure 3 As shown, the upper surface of the positioning ring 1 is provided with a guide rail 11. The guide rail 11 has a ring structure and a T-shaped cross-section. The guide rail 11 facilitates the guidance of the sliding component 2, making it convenient to use. The side of the positioning ring 1 is provided with a connecting rod 12, which is curved upward. The top of the connecting rod 12 is provided with a ball head 13. The connecting rod 12 and the ball head 13 facilitate the rotational connection between the positioning ring 1 and the rocker arm 6, allowing for flexible adjustment of the positioning ring 1.

[0035] like Figure 4As shown, the sliding assembly 2 includes a slider 21 and an adjusting plate 22. The bottom of the slider 21 has a sliding opening 212, which engages with the guide rail 11, facilitating the movement of the slider 21 along the guide rail. A first clamping knob 211 is located on the side of the slider 21, aligned with the sliding opening 212; the first clamping knob 211 is used to fix the position of the slider 21, stabilizing it at a designated position on the guide rail 11. An adjusting hole 213 is longitudinally located at the end of the slider 21 facing the inner side of the positioning ring 1; the adjusting hole 213 facilitates the installation of the adjusting plate 22, allowing for easy up-and-down adjustment and use of the adjusting plate 22. Adjusting the adjusting plate 22 up and down allows for adjustment of the laser pointing position. A second clamping knob 214 is located on the side of the slider 21, aligned with the adjusting hole 213; the adjusting plate 22 is inserted into the adjusting hole 213, and the second clamping knob 214 is used to fix the adjusted plate 22 in its raised position. Furthermore, the top of the adjusting plate 22 is provided with a connector 221, and the middle of the connector 221 is provided with a through hole 222. The cooperation between the connector 221 and the through hole 222 facilitates the rotatable connection between the adjusting plate 22 and the guide tube 3, and facilitates the flexible use of the guide tube 3.

[0036] like Figure 5 As shown, a connecting rod 31 is provided at the tail end of the side of the guide tube 3, and the connecting rod 31 is arranged parallel to the axis of the guide tube 3; the connecting rod 12 is for easy installation and use of the guide laser light 5. An adapter 32 is provided at the bottom of the side of the guide tube 3, and adapter posts 33 are symmetrically arranged on both sides of the adapter 32. The adapter posts 33 engage with both sides of the connecting shaft 841. The adapter 32, in conjunction with the adapter posts 33, facilitates the engagement of the guide tube 3 with both sides of the connector 221, facilitating the rotation and use of the guide tube 3. A pin hole 34 is provided in the middle of the adapter post 33, which is aligned with the through hole 222, allowing the adapter assembly 4 to pass through the pin hole 34 and the through hole 222, thereby facilitating the rotational connection between the guide tube 3 and the connector 221.

[0037] like Figure 6 As shown, the adapter assembly 4 includes a shaft 41 and a third clamping knob 42. One end of the shaft 41 has a limiting end plate 411, and the other end has a stud 412. The limiting end plate 411 facilitates mutual positioning between the shaft 41 and the adapter post 33. The end of the third clamping knob 42 facing the stud 412 has a connecting post 421. The connecting post 421 has a threaded groove 422 in its middle, which connects to the stud 412. The connecting post 421, in conjunction with the threaded groove 422, facilitates connection with the stud 412. By tightening the third clamping knob 42, the connecting post 421 abuts against the adapter post 33, thereby adjusting and fixing the tilt angle of the guide tube 3. Tightening the third clamping knob 42 fixes the tilt angle of the guide tube 3.

[0038] like Figure 7As shown, a switch 51 is provided on the side of the guide laser lamp 5 for convenient control of its opening and closing. A charging slot 52 is also provided at the tail end of the guide laser lamp 5 for convenient charging, facilitating its use. A socket 53 is provided on the side of the guide laser head, with a connecting hole 54 in the center. The connecting hole 54 is fitted onto the connecting rod 31. When the socket 53 and connecting hole 54 are fitted onto the connecting rod 31, the laser emitted by the guide laser head is aligned with the axis of the guide tube 3, thus accurately guiding the puncture needle. A fourth clamping knob 55 is provided at the position of the socket 53 aligned with the connecting hole 54, facilitating the fixing of the guide laser lamp 5's position.

[0039] like Figure 8 As shown, the top of the rocker arm 6 is equipped with a rotating joint 61. One end face of the rotating joint 61 is equipped with a first bearing 62. The rotating joint 61, in conjunction with the first bearing 62, facilitates connection with the support rod 7, enabling the rotation and use of the rocker arm 6. A fifth clamping knob 63 is located in the middle of the other end face of the rotating joint 61. The fifth clamping knob 63 is used to fix the tilt angle of the rocker arm 6, facilitating its use. The bottom of the rocker arm 6 is equipped with a mounting joint 64. The bottom surface of the mounting joint 64 is equipped with a ball groove 65. The mounting joint 64, in conjunction with the ball groove 65, facilitates connection with the ball head 13, enabling the rotation and use of the positioning ring 1. A sixth clamping knob 66 ​​is located on the mounting joint 64, aligned with the ball groove 65. The second clamping knob 214 is used to fix the angle of the positioning ring 1, ensuring its stable use.

[0040] like Figure 9 As shown, the support rod 7 is L-shaped, designed to support various components. The bottom end of the support rod 7 has a hexagonal body 71, with a base plate 72 at its bottom end. The bottom surface of the base plate 72 has a square insert 73. The base plate 72, in conjunction with the square insert 73, facilitates connection with the support unit, simplifying the assembly and use of the entire support rod 7. The other end of the support rod 7 has a mounting post 74, with a mounting shaft 75 at its end. The mounting shaft 75 is interference-fitted with the first bearing 62. The mounting post 74, in conjunction with the mounting shaft 75, facilitates connection with the rotating joint 61, thus allowing for easy connection between the rocker arm 6 and the support rod 7.

[0041] like Figure 1 and Figure 10As shown, the support part is a clamping assembly 8, which is easily fixed to the edge of the CT examination bed, thus providing convenient and stable support for various components. The clamping assembly 8 includes a clamping head 81, a rotating column 82, a pressure plate 83, and a clamping screw 84. The clamping head 81 is U-shaped, which facilitates its engagement with the edge of the CT examination bed. The bottom surface of the clamping head 81 has a threaded hole 811, which facilitates connection with the clamping screw 84. The top surface of the clamping head 81 has a support platform 812, and a second bearing 814 is located in the middle of the support platform 812. The support platform 812, in conjunction with the second bearing 814, facilitates rotational connection with the rotating column 82. A seventh clamping knob 813 is located on the side of the support platform 812 near the top, which facilitates fixing the angle of the rotating column 82. The bottom end of the rotating column 82 is provided with a transition shaft 821, which is interference-fitted with the second bearing 814. The top end of the rotating column 82 is provided with a first square groove 823, into which a square insert 73 is inserted. The rotating column 82 is provided with a first set screw 822 aligned with the first square groove 823. The first set screw 822 facilitates the stable connection of the support rod 7 to the rotating column 82. A threaded hole 811 is connected to a clamping screw 84, the top end of which is provided with a connecting shaft 841, which is rotatably connected to the pressure plate 83. The clamping screw 84 facilitates the clamping plate 83 to be pressed against the edge of the CT examination table. The bottom end of the clamping screw 84 is provided with a rotating handle 842, which facilitates the rotation of the clamping screw 84, thereby facilitating the clamping screw 84 to move the pressure plate 83 up and down.

[0042] like Figure 2 and Figure 11As shown, the support part is configured as a movable component 9. The movable component 9 facilitates the movement of the entire positioning device, making it convenient to use when the positioning device cannot be fixed to the CT examination table. The movable component 9 includes a movable base 91 and a lifting rod 92. The lifting rod 92 facilitates height adjustment of the support rod 7 and its connected components. The movable base 91 has casters 911 at its bottom corners, which facilitate movement of the entire movable component 9 and can be braked for securing the device when needed. A support rod 912 is located at the top center of the movable base 91, with a lifting groove 914 in the middle. The support rod 912, in conjunction with the lifting groove 914, facilitates height adjustment of the lifting rod 92. An eighth clamping knob 913 is located on the side of the support rod 912 near the top; the eighth clamping knob 913 facilitates fixing the height of the lifting rod 92, making its use convenient. The lifting rod 92 is inserted into the lifting groove 914, and the top of the lifting rod 92 is provided with a support column 921. The middle of the support column 921 is provided with a second square groove 922. The square insert 73 is inserted into the second square groove 922. The support column 921 and the second square groove 922 are used to facilitate connection with the support rod 7, which facilitates the installation and use of the support rod 7. The side of the support column 921 is provided with a second set screw aligned with the position of the second square groove 922, which can fix the position of the support rod 7.

[0043] Working principle: In use, the location of the lesion is first determined using a CT scan, and the area to be punctured is marked on the patient's body. Then, the surface positioning device is stably supported by a support unit. A clamping component 8 can be locked onto the edge of the CT examination table, while a moving component 9 allows for flexible movement using casters 911, which are then secured by brakes. The support rod 7 and the rocker arm 6 work together via a rotating structure to adjust the height and angle of the positioning ring 1. After the positioning ring 1 is aligned with the area around the puncture site, the angle is locked using the corresponding clamping knob. This ensures that the positioning ring 1 is stable at the puncture site. Then, the slider 21 of the sliding component 2 slides along the annular guide rail 11 on the positioning ring 1. The adjusting plate 22 can be adjusted up and down and fixed within the adjusting hole 213 of the slider 21. The guide tube 3 is rotatably connected to the connector 221 of the adjusting plate 22 through the adapter component 4, which can flexibly adjust the tilt angle and lock it through the third clamping knob 42. The guide laser lamp 5 is installed on the connecting rod 31 of the guide tube 3 through the socket 53. The laser emitted by it is collinear with the axis of the guide tube 3, accurately indicating the puncture position. After each component is flexibly adjusted and locked, the guide tube 3 is adjusted to the corresponding angle and fixed according to the determined puncture direction and angle. Then, the guide tube 3 is raised and lowered so that the light of the guide laser lamp 5 can point to the puncture point. Then, the medical staff can use the puncture needle to perform puncture on the patient. It provides accurate guidance for the puncture operation of the medical staff and helps to complete the accurate puncture.

[0044] In summary, compared with existing technologies, this application utilizes a positioning ring 1 that adheres to the patient's body surface to define the puncture site. The positioning ring 1 is equipped with a sliding component 2, a guide tube 3, and a guide laser 5. These structures guide the puncture, allowing the puncture needle to be inserted at a stable angle to the preset puncture location. This ensures puncture accuracy and assists staff in precisely performing punctures on patients. Furthermore, the positioning ring 1 can be flexibly adjusted with the cooperation of the rocker arm 6 and the support rod 7, adapting to any part of the patient's body, significantly improving its flexibility and applicability.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A CT-guided puncture surface positioning device that is easy to adjust flexibly, characterized in that, Includes a positioning ring (1) for fitting around the area on the patient's skin where puncture is required; A sliding component (2) is mounted on a positioning ring (1) and is slidable on the positioning ring (1); Guide tube (3), the guide tube (3) is disposed on the top of the sliding assembly (2), and the guide tube (3) and the sliding assembly (2) are rotatably connected by a transition assembly (4); A guide laser lamp (5) is provided at the tail end of the guide tube (3), and the laser emitted by the guide laser lamp (5) is on the same straight line as the axis of the guide tube (3). The rocker arm (6) is rotatably connected to the positioning ring (1) at its bottom end; Support rod (7), which is rotatably connected to the top of rocker arm (6); The support part is connected to the bottom end of the support rod (7) and is used to support the entire positioning device.

2. The CT-guided puncture surface positioning device for flexible adjustment according to claim 1, characterized in that, The upper surface of the positioning ring (1) is provided with a guide rail (11), the guide rail (11) has a ring structure, the cross section of the guide rail (11) has a T-shaped structure, the side of the positioning ring (1) is provided with a connecting rod (12), the connecting rod (12) is bent upward, and the top of the connecting rod (12) is provided with a ball head (13).

3. The CT-guided puncture surface positioning device for flexible adjustment according to claim 2, characterized in that, The sliding assembly (2) includes a slider (21) and an adjusting plate (22). The bottom of the slider (21) is provided with a sliding opening (212), which engages with the guide rail (11). A first pressing knob (211) is provided on the side of the slider (21) aligned with the sliding opening (212). An adjusting hole (213) is provided longitudinally at one end of the slider (21) facing the inner side of the positioning ring (1). A second pressing knob (214) is provided on the side of the slider (21) aligned with the adjusting hole (213). The adjusting plate (22) is inserted into the adjusting hole (213), and a connector (221) is provided on the top of the adjusting plate (22). A through hole (222) is provided in the middle of the connector (221).

4. The CT-guided puncture surface positioning device for flexible adjustment according to claim 3, characterized in that, The guide tube (3) has a connecting rod (31) at the end of its side. The connecting rod (31) is parallel to the axis of the guide tube (3). The bottom of the side of the guide tube (3) has an adapter (32). The adapter (32) has symmetrically arranged adapter pins (33) on both sides. The adapter pins (33) are engaged on both sides of the connecting shaft (841). The adapter pins (33) have a pin hole (34) in the middle. The pin hole (34) is aligned with the through hole (222).

5. The CT-guided puncture surface positioning device for flexible adjustment according to claim 1, characterized in that, The adapter assembly (4) includes a shaft (41) and a third clamping knob (42). One end of the shaft (41) is provided with a limiting end plate (411), and the other end is provided with a stud (412). The end of the third clamping knob (42) facing the stud (412) is provided with a connecting post (421). The connecting post (421) is provided with a threaded groove (422) in the middle. The threaded groove (422) is connected to the stud (412). After the third clamping knob (42) is tightened, the tilt angle of the guide tube (3) can be fixed.

6. The CT-guided puncture surface positioning device for flexible adjustment according to claim 4, characterized in that, The guide laser lamp (5) has a switch (51) on its side and a charging slot (52) at its tail end. The guide laser head has a socket (53) on its side and a socket hole (54) in the middle of the socket (53). The socket hole (54) is fitted onto the connecting rod (31). The socket (53) is aligned with the socket hole (54) and has a fourth pressing knob (55).

7. The CT-guided puncture surface positioning device for flexible adjustment according to claim 1, characterized in that, The rocker arm (6) is provided with a rotating joint (61) at the top, a first bearing (62) is provided on one end face of the rotating joint (61), and a fifth clamping knob (63) is provided in the middle of the other end face of the rotating joint (61); the rocker arm (6) is provided with a mounting joint (64) at the bottom end, a ball groove (65) is provided on the bottom surface of the mounting joint (64), and a sixth clamping knob (66) is provided on the mounting joint (64) aligned with the ball groove (65).

8. The CT-guided puncture surface positioning device for flexible adjustment according to claim 7, characterized in that, The support rod (7) is L-shaped, and the bottom end of the support rod (7) is provided with a hexagonal body (71), the bottom end of the hexagonal body (71) is provided with a base plate (72), and the bottom surface of the base plate (72) is provided with a square insert (73); the other end of the support rod (7) is provided with a mounting post (74), the end of the mounting post (74) is provided with a mounting shaft (75), and the mounting shaft (75) is interference-fitted with the first bearing (62).

9. The CT-guided puncture surface positioning device for flexible adjustment according to claim 8, characterized in that, The support part is configured as a clamping assembly (8), which includes a clamping head (81), a rotating column (82), a pressure plate (83), and a clamping screw (84). The clamping head (81) is U-shaped, and the bottom surface of the clamping head (81) is provided with a threaded hole (811). The top surface of the clamping head (81) is provided with a support platform (812). The middle part of the support platform (812) is provided with a second bearing (814). The side of the support platform (812) near the top is provided with a seventh clamping knob (813). The bottom end of the rotating column (82) is provided with a connecting shaft (821). (821) is interference-fitted with the second bearing (814). The top of the rotating column (82) is provided with a first square groove (823), and the square insert (73) is inserted into the inside of the first square groove (823). The rotating column (82) is provided with a first set screw (822) aligned with the position of the first square groove (823). The threaded hole (811) is connected to a clamping screw (84). The top of the clamping screw (84) is provided with a connecting shaft (841). The connecting shaft (841) is rotatably connected to the pressure plate (83), and the bottom of the clamping screw (84) is provided with a rotating handle (842).

10. A CT-guided puncture surface positioning device for flexible adjustment according to claim 8, characterized in that, The support part is configured as a movable component (9), which includes a movable base (91) and a lifting rod (92). The movable base (91) has casters (911) at the bottom corners and a support rod (912) at the top center. The support rod (912) has a lifting groove (914) at the center and an eighth pressing knob (913) at the side near the top of the support rod (912). The lifting rod (92) is inserted into the lifting groove (914) and a support column (921) is provided at the top of the lifting rod (92). The support column (921) has a second square groove (922) at the center and the square insert (73) is inserted into the second square groove (922).

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