Auxiliary orienting device for CT (Computed Tomography) guided puncture

Abstract

The invention belongs to the technical field of CT (Computed Tomography) guided puncture auxiliary devices, in particular to a CT guided puncture auxiliary orienting device, which mainly solves the technical problem of large orienting accuracy error of the original auxiliary orienting device, and comprises a first connecting block, a second connecting block, an identification plate, a level bubble base, a protractor pointer, a protractor and a backup plate, multiple sets of needle grooves are formed in the front side of the backup plate, the backup plate and the first connecting block are integrally connected and formed through a connecting rod, and the backup plate is connected with a handle. Compared with an original auxiliary orientation device, the auxiliary orientation device can achieve accurate orientation; the device is simple and exquisite in structure, convenient and flexible to operate, and capable of accurately guiding the needle inserting direction during puncture, saving operation time, avoiding side effects caused by too large radiation dosage, reducing the probability of complications and relieving pain of patients to a great extent, so that the device can be widely applied to the interventional examination diagnosis and treatment process guided by CT and MRI, and has a wide application prospect. And the practical value is high.

Description

Technical Field

[0001] The present invention belongs to the technical field of CT-guided puncture assistive devices, and particularly relates to a CT-guided puncture assistive orientation device. Background Art

[0002] Interventional examination and treatment techniques under CT guidance are accurate in positioning, have high safety, few complications, high diagnostic accuracy, and good curative effects, and are a very valuable examination and treatment method. The in-vivo target point, the body surface puncture point, the puncture angle, and the depth during CT-guided puncture can be accurately positioned and measured by CT scan images. However, it is rather difficult to grasp the needle insertion direction during puncture. As a result, in most cases, the best direction can only be found after multiple trial punctures, causing problems such as long operation time, large radiation dose, many complications, and great pain for patients, and to a certain extent affecting the accuracy of the examination and the effect of the treatment. The patent with the patent number 201810584252.1 discloses a CT and MRI-guided puncture assistive orientation device. The three-dimensional space where the spirit level rotates and the three-dimensional space where the puncture needle rotates of this device cannot be coordinated and in the same direction, resulting in a relatively large positioning error. Therefore, it is necessary to improve it to enhance the overall positioning accuracy of the assistive positioning device. Summary of the Invention

[0003] To overcome the technical defect that the existing CT and MRI-guided puncture assistive orientation devices have relatively large orientation accuracy errors, the present invention provides a CT-guided puncture assistive orientation device.

[0004] The present invention provides a CT-guided puncture auxiliary orientation device, which includes a first connecting block, a second connecting block, an identification plate, a spirit level base, a protractor pointer, a protractor and a backing plate; a rectangular card slot is provided at the center of the protractor, and angle scale lines are arranged on the front side wall of the protractor; the protractor pointer includes an integrally formed pointer support arm and a pointer head, and the protractor pointer is adapted to the protractor; a first shaft hole penetrates through the front and rear of the first connecting block, and a first rotating shaft is in clearance fit in the first shaft hole. The front end of the first rotating shaft is fixedly connected with a rectangular clamping block adapted to the rectangular card slot of the protractor, and the rear end of the first rotating shaft is fixedly connected with the side wall of the identification plate. A first identification line parallel to the axis of the first shaft hole is arranged at the top of the identification plate, and a second identification line is arranged at the top of the first connecting block; a first jackscrew that can be in abutting fit with the first rotating shaft is also in threaded fit on the first connecting block, and a first slot adapted to the pointer support arm is arranged at the top of the first connecting block; when the protractor is installed on the rectangular clamping block of the first rotating shaft, the protractor pointer is inserted into the first slot and the protractor pointer is located at the 0 scale line of the protractor, the first identification line at the top of the identification plate and the second identification line are on the same straight line; a second shaft hole penetrates through the left and right of the second connecting block, and a second rotating shaft is in clearance fit in the second shaft hole. The left end of the second rotating shaft is fixedly connected with a rectangular clamping block adapted to the rectangular card slot of the protractor, and the right end of the second rotating shaft is fixedly connected with the side wall of the spirit level base. A second jackscrew that can be in abutting fit with the second rotating shaft is also in threaded fit on the second connecting block, and a second slot adapted to the pointer support arm is arranged at the top of the second connecting block; a spirit level cylindrical slot and four laser line aiming points are arranged at the top of the spirit level base, and the four laser line aiming points are evenly distributed along the circumferential direction of the spirit level cylindrical slot. A third identification line parallel to the axis of the second shaft hole is arranged at the top of the second connecting block; when the protractor is installed on the rectangular clamping block of the second rotating shaft, the protractor pointer is inserted into the second slot and the protractor pointer is located at the 0 scale line of the protractor, the third identification line and the two opposite laser line aiming points are on the same straight line; a connecting arm extends forward on the second connecting block, and a clamping block that is inserted and matched with the connecting arm extends on the identification plate; multiple groups of needle slots are arranged on the front side of the backing plate, the left side of the backing plate and the right side of the first connecting block are integrally connected by a connecting rod, and a handle is connected to the rear side of the backing plate.

[0005] In a CT-guided puncture auxiliary orientation device described in the present invention, the second rotating shaft and the level bubble base are fixedly connected, and the second rotating shaft and the protractor are fixedly matched through the rectangular block and the rectangular slot of the protractor. When the protractor is installed on the rectangular block of the second rotating shaft, rotating the protractor will drive the level bubble base to rotate synchronously. The first rotating shaft and the identification plate are fixedly connected, and the first rotating shaft and the protractor are fixedly matched through the rectangular block and the rectangular slot of the protractor. When the protractor rotates a certain angle, the first connecting block is fixed, but the identification plate will rotate synchronously with the first rotating shaft, and the rotation of the identification plate will drive the second connecting block rigidly connected to rotate a certain angle. When the first rotating shaft needs to be relatively fixed with the first connecting block, the first top screw is rotated toward the first rotating shaft and pressed tightly. Similarly, when the second rotating shaft needs to be relatively fixed with the second connecting block, the second top screw is rotated toward the second rotating shaft and pressed tightly. Specifically, the connecting rod is L-shaped, one end of the connecting rod is connected to the front right side of the first connecting block, and the support plate is located on the right side of the other end of the connecting rod. The connecting rod is bent backward as a whole. After the connecting rod connects the first connecting block and the backing plate, the backing plate is located at the right rear of the first connecting block, and the first connecting block, the connecting rod and the backing plate are all located in the same horizontal plane. The pointer support arm of the protractor is inserted into the first slot or the second slot, the pointer head is arranged at the top of the pointer support arm and the tip of the pointer head can extend to the plane where the angle scale of the protractor is located, and a gap is left between the pointer head and the pointer support arm and the protractor (23) to facilitate the rotation of the protractor. The rear end of the first rotating shaft is integrally formed with the side wall of the identification plate. The right end of the second rotating shaft is integrally formed with the side wall of the level bubble base.

[0006] The operation process of the CT-guided puncture auxiliary orientation device in CT-guided puncture of the present invention is as follows: Step 1. Preparation of other auxiliary devices: ① Place the level laser light and the rack laser light orientation registration plate (patent number ZL201920192703.7) on the CT scanning bed, adjust the flat plate to be level, draw a straight line on the flat plate surface along the longitudinal laser line of the CT machine, and then move the flat plate out with the scanning bed; ② The center column of the tripod is perpendicular to the horizontal plane, the tilting rod is perpendicular to the tilt axis of the gimbal, and the horizontal laser line of the level is parallel to the center column of the tripod and parallel to the straight line drawn on the aforementioned registration plate along the longitudinal laser line of the CT rack; Step 2: Scan the corresponding part of the patient with a CT scanner. Determine the target point in the image displayed by the CT scanner according to the examination or treatment purpose, select an appropriate needle insertion route, determine the position of the best puncture point on the body surface, measure the angle α between the oblique axial plane where the needle insertion route is located and the standard axial plane, the angle β between the needle insertion route and the anterior-posterior midline in the oblique axial plane, the distance d1 between the best puncture point on the body surface and the standard cross-section where the dedicated positioning marker on the body surface is located, the distance d2 between the best puncture point on the body surface and the sagittal plane where the dedicated positioning marker on the body surface is located, and the distance d3 from the target point to the best puncture point on the body surface. Mark the position of the best puncture point on the body surface according to the distances d1 and d2. Step 3: The doctor sterilizes, wears sterile gloves, spreads a sterile drape, exposes the best puncture point on the body surface, disinfects the local area, and anesthetizes the local area. Step 4: Take out the sterilized CT-guided puncture auxiliary orientation device of the present invention under aseptic operation. First, tightly fit the protractor through the rectangular card slot at its center with the rectangular card block of the second rotating shaft connected to the spirit level base, and tightly fit the lower part of the pointer support arm with the second slot. Rotate the protractor to make the protractor pointer point to the scale line corresponding to -α, and fix the second rotating shaft through the second set screw. Then remove the protractor, tightly fit the protractor through the rectangular card slot at its center with the rectangular card block of the first rotating shaft connected to the identification plate, and tightly fit the lower part of the pointer support arm with the first slot. Rotate the protractor to make the protractor pointer point to the scale line corresponding to β, and fix the first rotating shaft through the first set screw. Then remove the protractor and the protractor pointer. Step 5: The operator holds the handle, presses the puncture needle in the needle slot at the back plate, places the needle tip at the best puncture point, adjusts the direction of the needle tail until the spirit level is in the horizontal position. The assistant adjusts the downshoot rod to make the longitudinal laser line of the horizontal level at the distal end of the downshoot rod close to the spirit level. The operator simultaneously adjusts the orientation of the spirit level to make the connection line of the longitudinal marking points around the spirit level parallel to the longitudinal laser line, which is the target puncture direction. The operator fixes the position of the CT-guided puncture auxiliary orientation device with one hand and pushes the puncture needle along the needle slot inward to the predetermined depth with the other hand, and then removes the finger to remove the CT-guided puncture auxiliary orientation device of the present invention.

[0007] Preferably, a first marking line is provided at the bottom of the identification plate. The first marking line at the bottom of the identification plate corresponds to the first marking line at the top of the identification plate and is parallel to the axis of the first shaft hole. When the identification plate is rotated 180°, the whole second connecting block is turned to the right side of the identification plate, which will make the spirit level closer to the back plate and is more convenient to observe the horizontal situation of the spirit level during puncture.

[0008] Preferably, the first set screw is installed on the left side of the first connection block, and the first set screw includes a threaded rod and a rotating handle connected to each other; the second set screw is installed on the rear side of the second connection block, and the second set screw includes a threaded rod and a rotating handle connected to each other. Such a setting makes the structure more reasonable and is more convenient when rotating the first set screw or the second set screw.

[0009] Preferably, multiple groups of needle grooves on the backing plate are adapted to puncture needles of different thicknesses. The diameters of the needle grooves on the backing plate are also different, so they are adapted to puncture needles of different thicknesses.

[0010] Preferably, the first marking line, the second marking line, the third marking line, and the laser line aiming point all protrude from the plane where they are located. The first marking line, the second marking line, and the third marking line are all raised lines, and the laser line aiming points are all raised blocks. Such a setting is more convenient when alignment is required.

[0011] Preferably, the first slot is located at a position on the top of the first connection block near the front edge, and the second slot is located at a position on the top of the second connection block near the left edge. Such a setting makes the structure reasonable.

[0012] Preferably, the first connection block, the second connection block, and the spirit level base are all of cuboid structure, the marking plate and the backing plate are of rectangular plate-like structure, and the area of the rear side wall of the first connection block corresponds to and is equal to the area of the surface of the marking plate. Such a setting makes the structure reasonable.

[0013] Preferably, anti-slip silica gel layers are respectively provided on the outer walls of the handle, the rotating handle of the first set screw, and the rotating handle of the second set screw. Such a setting can prevent slipping when rotating the handle, the rotating handle of the first set screw, or the rotating handle of the second set screw, making the overall operation more convenient and smooth.

[0014] The technical solution provided by the present invention has the following technical effects compared with the prior art: The CT-guided puncture auxiliary orientation device described in the present invention is designed according to the actual operation process of determining the target point, the skin surface needle entry point, the needle entry angle and depth during CT-guided puncture scanning. The design is scientific and accurate. Compared with the existing auxiliary positioning device, the height of the spirit level rotation axis is the same as that of the puncture needle fixing device rotation axis, ensuring that the rotation of the three-dimensional space where the spirit level is located and the three-dimensional space where the puncture needle is located can be coordinated and in the same direction to the greatest extent, making the orientation of the spirit level have a more reliable reference value; the device has a simple and delicate structure, is convenient and flexible to operate, can accurately guide the needle entry direction during puncture, saves the operation time, avoids the side effects caused by excessive radiation dose, avoids unnecessary complications, and greatly reduces the pain of the patient. Therefore, the present invention can be widely used in the process of CT- and MRI-guided interventional examination, diagnosis and treatment, and has high practical value. Description of the Drawings

[0015] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present invention and, together with the specification, are used to explain the principles of the present invention.

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or in the prior art, the accompanying drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 It is a schematic diagram of the overall structure of a CT-guided puncture assistance orientation device described in an embodiment of the present invention; Figure 2 It is a schematic diagram of the structure of a CT-guided puncture assistance orientation device after removing the protractor in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of a CT-guided puncture assistance orientation device after removing the protractor and the protractor pointer in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure after the first connecting block, the backrest plate, and the connecting rod are connected in an embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the second connecting block in an embodiment of the present invention; Figure 6 It is a schematic diagram of the structure of the identification plate in an embodiment of the present invention; Figure 7 It is a schematic diagram of the structure of the spirit level base in an embodiment of the present invention; Figure 8 It is an overall assembly drawing of another angle of a CT-guided puncture assistance orientation device described in an embodiment of the present invention; Figure 9 It is a schematic diagram of the cooperation between the protractor and the protractor pointer in an embodiment of the present invention.

[0018] In the figure: 1. First connecting block; 2. Second connecting block; 3. Identification plate; 4. Spirit level base; 5. Protractor pointer; 6. Protractor; 7. Backrest plate; 8. Angle scale line; 9. Pointer support arm; 10. Pointer head; 11. First shaft hole; 12. First rotating shaft; 13. Rectangular clamping block; 14. First identification line; 15. Second identification line; 16. First set screw; 17. First slot; 18. Second shaft hole; 19. Second rotating shaft; 20. Second set screw; 21. Second slot; 22. Laser line aiming point; 23. Third identification line; 24. Connecting arm; 25. Clamping block; 26. Needle slot; 27. Connecting rod; 28. Handle; 29. Threaded rod; 30. Rotating handle; 31. Spirit level cylindrical slot. Detailed Embodiments

[0019] In order to more clearly understand the above objects, features and advantages of the present invention, the solution of the present invention will be further described below. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0020] In the description, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. It should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection. For those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0021] In the following description, many specific details are set forth in order to fully understand the present invention, but the present invention may also be implemented in other ways different from those described herein; for the convenience of narration, the "left", "right", "up", "down", "front" and "back" mentioned in the text are Figure 1 consistent with the left, right, up, down, front and back directions of itself, but do not limit the structure of the present invention. Obviously, the embodiments in the specification are only a part of the embodiments of the present invention, rather than all the embodiments.

[0022] The following will describe in detail the specific embodiments of the present invention with reference to the accompanying drawings.

[0023] In one embodiment, as Figures 1 to 9As shown, a CT-guided puncture auxiliary orientation device is provided, including a first connecting block 1, a second connecting block 2, an identification plate 3, a spirit level base 4, a protractor pointer 5, a protractor 6 and a backing plate 7; a rectangular card slot is provided at the center of the protractor 6, and angle scale lines 8 are arranged on the front side wall of the protractor 6; the protractor pointer 5 includes a pointer support arm 9 and a pointer head 10 integrally formed, and the protractor pointer 5 is adapted to the protractor 6; a first shaft hole 11 runs through the front and back of the first connecting block 1, a first rotating shaft 12 is in clearance fit in the first shaft hole 11, a rectangular clamping block 13 adapted to the rectangular card slot of the protractor 6 is fixedly connected to the front end of the first rotating shaft 12, the rear end of the first rotating shaft 12 is fixedly connected to the side wall of the identification plate 3, a first identification line 14 parallel to the axis of the first shaft hole 11 is arranged at the top of the identification plate 3, and a second identification line 15 is arranged at the top of the first connecting block 1; a first top screw 16 that can be in tight fit with the first rotating shaft 12 is also in threaded fit on the first connecting block 1, and a first slot 17 adapted to the pointer support arm 9 is arranged at the top of the first connecting block 1; when the protractor 6 is installed on the rectangular clamping block 13 of the first rotating shaft 12, the protractor pointer 5 is inserted into the first slot 17 and the protractor pointer 5 is located at the 0 scale line of the protractor 6, the first identification line 14 at the top of the identification plate 3 and the second identification line 15 are on the same straight line; a second shaft hole 18 runs through the left and right of the second connecting block 2, a second rotating shaft 19 is in clearance fit in the second shaft hole 18, a rectangular clamping block 13 adapted to the rectangular card slot of the protractor 6 is fixedly connected to the left end of the second rotating shaft 19, the right end of the second rotating shaft 19 is fixedly connected to the side wall of the spirit level base 4, a second top screw 20 that can be in tight fit with the second rotating shaft 19 is also in threaded fit on the second connecting block 2, and a second slot 21 adapted to the pointer support arm 9 is arranged at the top of the second connecting block 2; a spirit level cylindrical slot 31 and four laser line aiming points 22 are arranged at the top of the spirit level base 4, and the four laser line aiming points 22 are evenly distributed along the circumferential direction of the spirit level cylindrical slot 31, and a third identification line 23 parallel to the axis of the second shaft hole 18 is arranged at the top of the second connecting block 2; when the protractor 6 is installed on the rectangular clamping block 13 of the second rotating shaft 19, the protractor pointer 5 is inserted into the second slot 21 and the protractor pointer 5 is located at the 0 scale line of the protractor 6, the third identification line 23 and the two opposite laser line aiming points 22 are on the same straight line; a connecting arm 24 extends forward on the second connecting block 2, and a clamping block 25 adapted to be inserted and matched with the connecting arm 24 extends on the identification plate 3; multiple groups of needle slots 26 are arranged on the front side of the backing plate 7, the left side of the backing plate 7 and the right side of the first connecting block 1 are integrally connected and formed through a connecting rod 27, and a handle 28 is connected to the rear side of the backing plate 7.

[0024] In the CT-guided puncture auxiliary orientation device of the present invention, the second rotating shaft 19 and the spirit level base 4 are fixedly connected. The second rotating shaft 19 and the protractor 6 are fixedly fitted through the rectangular block 13 and the rectangular slot of the protractor 6. When the protractor 6 is installed on the rectangular block 13 of the second rotating shaft 19, rotating the protractor 6 will drive the spirit level base 4 to rotate synchronously. The first rotating shaft 12 and the identification plate 3 are fixedly connected, and the first rotating shaft 12 and the protractor 6 are fixedly fitted through the rectangular block 13 and the rectangular slot of the protractor 6. When the protractor 6 rotates a certain angle, the first connecting block 1 remains stationary, but the identification plate 3 will rotate synchronously with the first rotating shaft 12, and the rotation of the identification plate 3 will drive the second connecting block 2 rigidly connected thereto to rotate a certain angle. When the first rotating shaft 12 needs to be relatively fixed to the first connecting block 1, the first set screw 16 can be rotated towards the first rotating shaft 12 to tighten it. Similarly, when the second rotating shaft 19 needs to be relatively fixed to the second connecting block 2, the second set screw 20 can be rotated towards the second rotating shaft 19 to tighten it. Specifically, the connecting rod 27 is L-shaped, one end of the connecting rod 27 is connected to the front-right part of the right side of the first connecting block 1, and the backing plate 7 is located on the right side of the other end of the connecting rod 27. The connecting rod 27 is bent backward as a whole. After the connecting rod 27 connects the first connecting block 1 and the backing plate 7, the backing plate 7 is located at the rear-right of the first connecting block 1, and the first connecting block 1, the connecting rod 27, and the backing plate 7 are all in the same horizontal plane. The pointer support arm 9 of the protractor 6 is inserted into the first slot 17 or the second slot 21, the pointer head 10 is arranged at the top of the pointer support arm 9, and the tip of the pointer head 10 can extend to the plane where the angle scale line 8 of the protractor 6 is located. There are gaps between the pointer head 10 and the pointer support arm 9 and the protractor 6 respectively to facilitate the rotation of the protractor 6. The rear end of the first rotating shaft 12 is integrally formed with the side wall of the identification plate 3. The right end of the second rotating shaft 19 is integrally formed with the side wall of the spirit level base 4.

[0025] The operation process of the CT-guided puncture auxiliary orientation device of the present invention in CT-guided puncture is as follows: Step 1. Preparation of other auxiliary devices: ① Place the leveling laser lamp and the gantry laser lamp azimuth registration plate (patent number ZL201920192703.7) on the CT scanning bed, adjust it to the flat level, draw a straight line along the longitudinal laser line of the CT machine on the flat surface, and then move the flat plate out of the scanning bed with the scanning bed; ② The central column of the tripod is perpendicular to the horizontal plane, the pitching rod is perpendicular to the pitching axis of the pan-tilt head, and the horizontal laser line of the spirit level is parallel to the central column of the tripod and parallel to the straight line drawn along the longitudinal laser line of the CT gantry on the aforementioned registration plate; Step 2: Scan the corresponding part of the patient with a CT scanner. Determine the target point in the image displayed by the CT scanner according to the examination or treatment purpose, select an appropriate needle insertion route, determine the position of the best puncture point on the body surface, measure the angle α between the oblique axial plane where the needle insertion route is located and the standard axial plane, the angle β between the needle insertion route and the anterior-posterior midline in the oblique axial plane, the distance d1 between the best puncture point on the body surface and the standard cross-section where the special positioning marker on the body surface is located, the distance d2 between the best puncture point on the body surface and the sagittal plane where the special positioning marker on the body surface is located, and the distance d3 from the target point to the best puncture point on the body surface. Mark the position of the best puncture point on the body surface according to the distances d1 and d2; Step 3: The doctor sterilizes, wears sterile gloves, spreads a sterile drape, exposes the best puncture point on the body surface, disinfects the local area, and performs local anesthesia; Step 4: Take out the disinfected CT-guided puncture auxiliary orientation device of the present invention under aseptic operation. First, tightly fit the protractor 6 through the rectangular card slot at its center with the rectangular card block 13 of the second rotating shaft 19 connected to the spirit level base 4, and tightly fit the lower part of the pointer support arm 9 with the second slot 21. Rotate the protractor 6 so that the protractor pointer 5 points to the scale line corresponding to -α, and fix the second rotating shaft 19 through the second set screw 20; then remove the protractor 6, tightly fit the protractor 6 through the rectangular card slot at its center with the rectangular card block 13 of the first rotating shaft 12 connected to the identification plate 3, and tightly fit the lower part of the pointer support arm 9 with the first slot 17. Rotate the protractor 6 so that the protractor pointer 5 points to the scale line corresponding to β, and fix the first rotating shaft 12 through the first set screw 16. Then remove the protractor 6 and the protractor pointer 5; Step 5: The operator holds the handle 28, presses the puncture needle into the needle groove 26 at the back plate 7, places the needle tip at the best puncture point, adjusts the direction of the needle tail until the spirit level is in the horizontal position. The assistant adjusts the overhead shooting rod so that the longitudinal laser line of the horizontal level at the distal end of the overhead shooting rod approaches the spirit level. The operator simultaneously adjusts the orientation of the spirit level so that the connection line of the longitudinal marking points around the spirit level is parallel to the longitudinal laser line, which is the target puncture direction. The operator fixes the position of the CT-guided puncture auxiliary orientation device with one hand and pushes the puncture needle along the needle groove 26 inward to the predetermined depth with the other hand, and then removes the finger to remove the CT-guided puncture auxiliary orientation device of the present invention.

[0026] On the basis of the above embodiments, in a preferred embodiment, a first marking line 14 is provided at the bottom of the identification plate 3. The first marking line 14 at the bottom of the identification plate 3 corresponds to the first marking line 14 at the top of the identification plate 3 and is parallel to the axis of the first shaft hole 11. When the identification plate 3 is rotated 180°, the second connecting block 2 as a whole is turned to the right side of the identification plate 3, which will make the spirit level closer to the back plate 7, making it more convenient to observe the horizontal situation of the spirit level during puncture.

[0027] Based on the above embodiments, in a preferred embodiment, the first set screw 16 is installed on the left side of the first connecting block 1, and the first set screw 16 includes a threaded rod 29 and a rotating handle 30 connected to each other; the second set screw 20 is installed on the rear side of the second connecting block 2, and the second set screw 20 includes a threaded rod 29 and a rotating handle 30 connected to each other. Such a setting makes the structure more reasonable and it is more convenient to rotate the first set screw 16 or the second set screw 20.

[0028] Based on the above embodiments, in a preferred embodiment, multiple groups of needle slots 26 on the backing plate 7 are adapted to puncture needles of different thicknesses. The diameters of the needle slots 26 on the backing plate 7 are also different, so they are adapted to puncture needles of different thicknesses.

[0029] Based on the above embodiments, in a preferred embodiment, the first marking line 14, the second marking line 15, the third marking line 23, and the laser line aiming point 22 all protrude from the plane where they are located. The first marking line 14, the second marking line 15, and the third marking line 23 are all raised lines, and the laser line aiming point 22 is a raised block. Such a setting is more convenient when alignment is required.

[0030] Based on the above embodiments, in a preferred embodiment, the first slot 17 is located at a position on the top of the first connecting block 1 near the front side edge, and the second slot 21 is located at a position on the top of the second connecting block 2 near the left side edge. Such a setting makes the structure reasonable.

[0031] Based on the above embodiments, in a preferred embodiment, the first connecting block 1, the second connecting block 2, and the spirit level base 4 are all of cuboid structure, the marking plate 3 and the backing plate 7 are of rectangular plate-like structure, and the area of the rear side wall of the first connecting block 1 corresponds to and is equal to the area of the plate surface of the marking plate 3. Such a setting makes the structure reasonable.

[0032] Based on the above embodiments, in a preferred embodiment, anti-slip silica gel layers are respectively provided on the outer walls of the handle 28, the rotating handle 30 of the first set screw 16, and the rotating handle 30 of the second set screw 20. Such a setting can prevent slipping when rotating the handle 28, the rotating handle 30 of the first set screw 16, or the rotating handle 30 of the second set screw 20, making the overall operation more convenient and smooth.

[0033] The above are only the specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Although the above embodiments have been described in detail, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the above embodiments, and they should all be covered by the protection scope of the claims.

Claims

1. A CT-guided puncture-assisted orientation device, characterized in that, It includes a first connecting block (1), a second connecting block (2), an identification plate (3), a spirit level base (4), a protractor pointer (5), a protractor (6) and a backing plate (7); A rectangular card slot is provided at the center of the protractor (6), and angle scale lines (8) are provided on the front side wall of the protractor (6); The protractor pointer (5) includes a pointer support arm (9) and a pointer head (10) integrally formed, and the protractor pointer (5) is adapted to the protractor (6); A first shaft hole (11) runs through the front and back of the first connecting block (1). A first rotating shaft (12) is in clearance fit in the first shaft hole (11). A rectangular clamping block (13) adapted to the rectangular card slot of the protractor (6) is fixedly connected to the front end of the first rotating shaft (12). The rear end of the first rotating shaft (12) is fixedly connected to the side wall of the identification plate (3). A first identification line (14) parallel to the axis of the first shaft hole (11) is provided at the top of the identification plate (3). A second identification line (15) is provided at the top of the first connecting block (1). A first setscrew (16) that can be in abutting fit with the first rotating shaft (12) is also in threaded fit on the first connecting block (1). A first slot (17) adapted to the pointer support arm (9) is provided at the top of the first connecting block (1). When the protractor (6) is installed on the rectangular clamping block (13) of the first rotating shaft (12), the protractor pointer (5) is inserted into the first slot (17) and the protractor pointer (5) is located at the 0 scale line of the protractor (6), the first identification line (14) at the top of the identification plate (3) and the second identification line (15) are on the same straight line; A second shaft hole (18) runs through the left and right of the second connecting block (2). A second rotating shaft (19) is in clearance fit in the second shaft hole (18). A rectangular clamping block (13) adapted to the rectangular card slot of the protractor (6) is fixedly connected to the left end of the second rotating shaft (19). The right end of the second rotating shaft (19) is fixedly connected to the side wall of the spirit level base (4). A second setscrew (20) that can be in abutting fit with the second rotating shaft (19) is also in threaded fit on the second connecting block (2). A second slot (21) adapted to the pointer support arm (9) is provided at the top of the second connecting block (2). A spirit level cylindrical slot (31) and four laser line aiming points (22) are provided at the top of the spirit level base (4). The four laser line aiming points (22) are evenly distributed along the circumferential direction of the spirit level cylindrical slot (31). A third identification line (23) parallel to the axis of the second shaft hole (18) is provided at the top of the second connecting block (2). When the protractor (6) is installed on the rectangular clamping block (13) of the second rotating shaft (19), the protractor pointer (5) is inserted into the second slot (21) and the protractor pointer (5) is located at the 0 scale line of the protractor (6), the third identification line (23) and two opposite laser line aiming points (22) are on the same straight line. A connecting arm (24) extends forward on the second connecting block (2), and a clamping block (25) that is in plug-in fit with the connecting arm (24) extends on the identification plate (3); Multiple groups of needle grooves (26) are arranged on the front side of the back plate (7). The left side of the back plate (7) and the right side of the first connecting block (1) are integrally connected and formed by a connecting rod (27). A handle (28) is connected to the rear side of the back plate (7).

2. The CT-guided puncture assistance orientation device according to claim 1, wherein A first marking line (14) is arranged at the bottom of the marking plate (3). The first marking line (14) at the bottom of the marking plate (3) corresponds to the first marking line (14) at the top of the marking plate (3) in position, and both are parallel to the axis of the first shaft hole (11).

3. The CT-guided puncture-assisted orientation device according to claim 2, wherein, The first set screw (16) is installed on the left side of the first connecting block (1), and the first set screw (16) includes a threaded rod (29) and a rotating handle (30) connected to each other; the second set screw (20) is installed on the rear side of the second connecting block (2), and the second set screw (20) includes a threaded rod (29) and a rotating handle (30) connected to each other.

4. A CT-guided puncture-assisted orientation device according to any one of claims 1 to 3, characterized in that, The multiple groups of needle grooves (26) on the back plate (7) are adapted to puncture needles of different thicknesses.

5. The CT-guided puncture-assisted orientation device according to claim 4, wherein The first marking line (14), the second marking line (15), the third marking line (23), and the laser line aiming point (22) all protrude from the plane where they are located.

6. The CT-guided puncture-assisted orientation device according to claim 5, wherein, The first slot (17) is located at a position near the front edge of the top of the first connecting block (1), and the second slot (21) is located at a position near the left edge of the top of the second connecting block (2).

7. The CT-guided puncture assistance and orientation device according to claim 6, wherein, The first connecting block (1), the second connecting block (2), and the spirit level base (4) are all of a cuboid structure. The marking plate (3) and the back plate (7) are of a rectangular plate structure. The area of the rear side wall of the first connecting block (1) is correspondingly equal to the area of the plate surface of the marking plate (3).

8. The CT-guided puncture-assisted orientation device according to claim 3, characterized in that, Anti-slip silica gel layers are respectively arranged on the outer walls of the handle (28), the rotating handle (30) of the first set screw (16), and the rotating handle (30) of the second set screw (20).

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