CT (Computed Tomography) lower puncture angle auxiliary device based on optical projection

Abstract

The invention discloses a CT lower puncture angle auxiliary device based on optical projection, which comprises two U-shaped frames, the upper ends of the U-shaped frames are connected with a longitudinal guide rail, the longitudinal guide rail is slidably connected with a sliding piece, the outer wall of the sliding piece is connected with a linkage rod, the end part of the linkage rod is connected with a fixing ring, a connecting rod is inserted into the fixing ring, and the connecting rod is connected with the connecting rod. The upper end of the connecting rod on the left side is connected with a light source fixing clamp, an intense light source is detachably installed in the light source fixing clamp, and the upper end of the connecting rod on the right side is connected with a projection plate. The device is reasonable in structural design, an operator can be helped to clearly know the angle of a puncture needle, needle insertion in the accurate direction is facilitated, and the economic burden of hospitals and patients cannot be additionally increased.

Description

Technical Field

[0001] The invention relates to an auxiliary navigation device for percutaneous puncture under CT, and mainly relates to a puncture angle auxiliary device under CT based on optical projection. Background Art

[0002] Percutaneous puncture biopsy under CT is widely used in clinical practice, but the puncture and needle insertion depend on the subjective experience of the operator, and it is difficult to avoid inaccurate puncture angles, and repeated needle insertions are required to adjust to the optimal angle. The main auxiliary devices currently available are:

[0003] 1. Optical system tracking surgical navigation system: It can monitor the position and direction of the puncture needle in real time, fuse the preoperative enhanced CT scan image with the real-time image captured by the optical positioning system, and generate a comprehensive navigation image. It displays the position of the surgical instrument in the patient's body and its relationship with the target lesion in real time. Doctors performing lung puncture under its monitoring can help improve accuracy and safety. However, this technology requires the use of special positioning equipment and light sources, which has high equipment costs and high environmental requirements, and may be interfered by equipment such as operating tables and CT machines.

[0004] 2. Electromagnetic navigation technology: Through the principle of electromagnetic induction, the position and direction of the puncture needle can be monitored in real time, and the movement of the puncture needle can be accurately controlled. However, the accuracy of electromagnetic navigation technology may be affected by factors such as the patient's respiratory movement and magnetic field interference, and corresponding measures need to be taken to compensate and correct it. The equipment and consumables are expensive.

[0005] 3. Virtual reality and augmented reality technology: It can help doctors better understand and plan surgeries through 3D reconstruction and simulation of surgical procedures. Doctors can simulate the puncture process in a virtual environment to optimize surgical plans and improve surgical success rates, but it is not real-time and the equipment is extremely expensive.

[0006] 4. Robotic assistance: Using a robot-assisted surgical system to perform lung puncture biopsy can accurately guide the puncture needle to the target location, avoiding errors that may occur in traditional methods, shortening the operation time, and improving efficiency. It can reduce dependence on CT, thereby reducing radiation dose. Similarly, robot-assisted technology requires high equipment costs and requires doctors to have proficient operating technical knowledge and experience.

[0007] Therefore, the study of a low-cost, easy-to-use, and easy-to-promote auxiliary guidance device is of great significance for improving the popularity and diagnostic efficiency of CT puncture technology and reducing the risk of puncture. To this end, we proposed a CT puncture angle auxiliary device based on optical projection. Summary of the invention

[0008] The purpose of the present invention is to provide a CT puncture angle auxiliary device based on optical projection to overcome the technical problems existing in the prior art.

[0009] In order to achieve the above technical objectives and the above technical effects, the present invention provides the following technical solutions:

[0010] A CT puncture angle auxiliary device based on optical projection comprises two U-shaped frames, wherein the upper ends of the U-shaped frames are connected with longitudinal guide rails, a sliding member is slidably connected with the longitudinal guide rails, a linkage rod is connected with the outer wall of the sliding member, the end of the linkage rod is connected with a fixing ring, a connecting rod is inserted in the fixing ring, the upper end of the connecting rod on the left side is connected with a light source fixing clamp, a strong light source is detachably installed in the light source fixing clamp, and the upper end of the connecting rod on the right side is connected with a projection plate.

[0011] Preferably, in a CT puncture angle assist device based on optical projection, a threaded hole is provided on the outer wall of the fixing ring, a fastening bolt is screwed into the threaded hole, and a limit strip is connected to the inner wall of the fixing ring, and the limit strip is staggered from the threaded hole.

[0012] Preferably, in a CT puncture angle assist device based on optical projection, a limit groove is provided on the outer wall of the connecting rod, the limit strip is slidably connected in the limit groove, and a line scale is provided on the outer wall of the connecting rod along the height direction.

[0013] Preferably, in a CT puncture angle assist device based on optical projection, the longitudinal guide rail is specifically an I-rail, and the outer wall of the longitudinal guide rail is provided with two linear scales along the front-to-back direction.

[0014] Preferably, in a CT puncture angle assist device based on optical projection, a threaded hole two is provided on the top of the sliding member, a fastening bolt two is threaded in the threaded hole two, a wheel axle is connected to the inner wall of the sliding member, a guide wheel is rotatably connected to the end of the wheel axle, and the guide wheel is slidably connected to the recess of the longitudinal guide rail.

[0015] Preferably, in a CT puncture angle assist device based on optical projection, a level ruler is connected to the bottom of the left side wall of the projection plate, a semicircular mark is opened in the middle of the left side wall of the projection plate, and an angle scale is arranged inside the semicircular mark.

[0016] Preferably, in a CT puncture angle assist device based on optical projection, the center of the semicircular mark coincides with the axis of the strong light source.

[0017] Preferably, in a CT puncture angle assist device based on optical projection, the two U-shaped frames are arranged in parallel along the front-to-back direction.

[0018] The beneficial effects of the present invention are:

[0019] 1. The present invention can display the insertion angle of the puncture needle in real time, and the doctor can perform puncture with the assistance of the present invention, which helps to improve the accuracy and safety;

[0020] 2. The present invention uses safe, easy, accurate and low-cost equipment to reduce the economic burden on patients and meets the needs of the medical market;

[0021] 3. The device of the present invention is light and adjustable, and the position of the light source and the projection board can be adjusted according to the patient's body shape, and has strong compatibility;

[0022] 4. The present invention has no additional consumables, and the strong light source can be replaced by a common flashlight, which is easy to maintain;

[0023] 5. The equipment support of the present invention is located at the head side and the tail side of the examination bed, away from the surgical sterile area, and will not cause pollution or affect the operator's operation.

[0024] In summary, the present invention has a reasonable structural design and introduces an optical angle real-time display device during the puncture process under CT, which can help the operator clearly understand the angle of the puncture needle and facilitate needle insertion in the correct direction. A low-cost, easy-to-implement simple solution is selected in terms of materials and structure to replace expensive electromagnetic, robotic and other surgical navigation systems on the market. The equipment is easier to popularize and will not increase the economic burden on hospitals and patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 3 It is a schematic diagram of the structure of the longitudinal guide rail in the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the sliding member in the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the fixing ring in the present invention;

[0031] Figure 6It is a schematic diagram of the structure of the projection board in the present invention.

[0032] In the figure: 1. U-shaped frame; 2. Longitudinal guide rail; 3. Sliding part; 4. Linkage rod; 5. Fixing ring; 6. Connecting rod; 7. Light source fixing clamp; 8. Strong light source; 9. Projection board; 21. Linear scale two; 31. Threaded hole two; 32. Fastening bolt two; 33. Wheel axle; 34. Guide wheel; 51. Threaded hole one; 52. Fastening bolt one; 53. Limiting strip; 61. Limiting groove; 62. Linear scale one; 91. Level ruler; 92. Semicircular mark; 93. Angular scale. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See also Figure 1-6 As shown, this embodiment is a CT puncture angle auxiliary device based on optical projection, including two U-shaped frames 1, the upper end of the U-shaped frame 1 is connected with a longitudinal guide rail 2, a sliding member 3 is slidably connected to the longitudinal guide rail 2, the outer wall of the sliding member 3 is connected with a linkage rod 4, the end of the linkage rod 4 is connected with a fixing ring 5, a connecting rod 6 is inserted in the fixing ring 5, the upper end of the connecting rod 6 on the left side is connected with a light source fixing clamp 7, a strong light source 8 is detachably installed in the light source fixing clamp 7, and the upper end of the connecting rod 6 on the right side is connected with a projection plate 9.

[0035] The outer wall of the fixing ring 5 is provided with a threaded hole 51, and a fastening bolt 52 is screwed into the threaded hole 51. The inner wall of the fixing ring 5 is connected with a limit strip 53, and the limit strip 53 is staggered from the threaded hole 51 to facilitate the adjustment of the height position of the connecting rod 6.

[0036] The outer wall of the connecting rod 6 is provided with a limiting groove 61, and the limiting strip 53 is slidably connected in the limiting groove 61 to prevent the connecting rod 6 from deflecting and shaking. The outer wall of the connecting rod 6 is provided with a line scale 62 along the height direction.

[0037] The longitudinal guide rail 2 is specifically an I-rail, and a line scale 21 is provided on the outer wall of the longitudinal guide rail 2 along the front-to-back direction to facilitate understanding of the front-to-back position of the sliding member 3.

[0038] A threaded hole 31 is provided on the top of the sliding member 3, and a fastening bolt 32 is screwed into the threaded hole 31. A wheel axle 33 is connected to the inner wall of the sliding member 3, and a guide wheel 34 is rotatably connected to the end of the wheel axle 33. The guide wheel 34 is slidably connected to the recess of the longitudinal guide rail 2 to facilitate adjustment of the longitudinal position of the sliding member 3.

[0039] A level ruler 91 is connected to the bottom of the left side wall of the projection plate 9, and a semicircular mark 92 is provided in the middle of the left side wall of the projection plate 9. An angle scale 93 is provided in the semicircular mark 92 to facilitate timely correction and ensure accurate puncture needle insertion angle.

[0040] The center of the semicircular mark 92 coincides with the axis of the strong light source 8 to ensure puncture accuracy.

[0041] The two U-shaped frames 1 are arranged in parallel along the front-rear direction, and the overall structure is stable and reliable.

[0042] The specific implementation of the present invention is:

[0043] When the device is in use, the examination bed is placed between the two U-shaped frames 1, the two longitudinal guide rails 2 are respectively located at the head side and the tail side of the examination bed, the strong light source 8 is arranged at the head side of the examination bed, the projection board 9 is arranged at the tail side of the examination bed, the connecting rod 6 can be raised and lowered in the fixing ring 5, and the height is adjusted in conjunction with the linear scale 62, the connecting rod 6 is fixed by the fastening bolt 52, the guide wheel 34 is used to slide at the notch of the longitudinal guide rail 2, so as to facilitate the adjustment of the front and rear position of the sliding member 3, and the fastening bolt 32 is used to fix it, the projection board 9 is kept horizontal by the bottom level 91, and a semicircular mark 92 is arranged in the center of the projection board 9, and the puncture angle is marked in conjunction with the angle scale 93;

[0044] In puncture under CT, the preset angle of the puncture needle is obtained in the CT image before puncture. When the operator inserts the needle, the strong light source is turned on, and the needle body of the puncture needle is projected on the projection board 9. By observing the needle shadow and angle scale on the projection board 9, timely correction can be made to ensure accurate puncture needle angle;

[0045] The projection board 9 can be adjusted in height and left and right. The level ruler 91 at the bottom can be used to calibrate the angle meter to a horizontal position. When observing the angle of the puncture needle, the zero point position of the angle scale 93 of the semicircular mark 92 is aligned with the root of the puncture point to assist navigation and guide puncture diagnosis and treatment under CT. The doctor makes a comprehensive judgment based on subjective experience and light and shadow equipment.

[0046] This device is based on the principle of strong light projection and adds a puncture angle auxiliary navigation device. The needle body is projected on a projection board 9 with an angle scale. The angle display is real-time, intuitive, simple and easy to use, has good compatibility, can be calibrated horizontally, and can adjust the position of the light source and the projection board.

[0047] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0048] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A CT puncture angle assist device based on optical projection, characterized in that: The invention comprises two U-shaped frames (1), wherein the upper end of the U-shaped frame (1) is connected to a longitudinal guide rail (2), a sliding member (3) is slidably connected to the longitudinal guide rail (2), an outer wall of the sliding member (3) is connected to a linkage rod (4), an end of the linkage rod (4) is connected to a fixing ring (5), a connecting rod (6) is inserted into the fixing ring (5), the upper end of the left connecting rod (6) is connected to a light source fixing clamp (7), a strong light source (8) is detachably installed in the light source fixing clamp (7), and the upper end of the right connecting rod (6) is connected to a projection board (9).

2. The CT puncture angle assisting device based on optical projection according to claim 1, characterized in that: The outer wall of the fixing ring (5) is provided with a threaded hole (51), a fastening bolt (52) is screwed into the threaded hole (51), and the inner wall of the fixing ring (5) is connected with a limit strip (53), and the limit strip (53) is arranged at a position staggered from the threaded hole (51).

3. The CT puncture angle assisting device based on optical projection according to claim 2, characterized in that: The outer wall of the connecting rod (6) is provided with a limit groove (61), the limit strip (53) is slidably connected in the limit groove (61), and the outer wall of the connecting rod (6) is provided with a linear scale (62) along the height direction.

4. The CT puncture angle assisting device based on optical projection according to claim 1, characterized in that: The longitudinal guide rail (2) is specifically an I-rail, and the outer wall of the longitudinal guide rail (2) is provided with a second linear scale (21) along the front-to-back direction.

5. The CT puncture angle assisting device based on optical projection according to claim 1, characterized in that: The top of the sliding member (3) is provided with a second threaded hole (31), in which a second fastening bolt (32) is threadedly connected, the inner wall of the sliding member (3) is connected with a wheel axle (33), the end of the wheel axle (33) is rotatably connected with a guide wheel (34), and the guide wheel (34) is slidably connected to the notch of the longitudinal guide rail (2).

6. The CT puncture angle assisting device based on optical projection according to claim 1, characterized in that: A level ruler (91) is connected to the bottom of the left side wall of the projection plate (9), a semicircular mark (92) is provided in the middle of the left side wall of the projection plate (9), and an angular scale (93) is provided inside the semicircular mark (92).

7. The CT puncture angle assisting device based on optical projection according to claim 6, characterized in that: The center of the semicircular mark (92) coincides with the axis of the strong light source (8).

8. The CT puncture angle assisting device based on optical projection according to claim 1, characterized in that: The two U-shaped frames (1) are arranged in parallel along the front-rear direction.

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