A positioning and guiding device for restoring CT path and its usage method

Abstract

The present invention discloses a positioning and guiding device for restoring a CT path and a using method thereof, which includes a protractor, a hanging needle and a displacement adjustment module. The protractor is provided with a sliding groove, a plurality of scale lines and a plurality of first scale values. A plurality of second scale values are provided on the outer circumferential surface of the protractor. The first scale values include point O, point O1 and a plurality of angle values. Point O1 is arranged at the center of the protractor, and point O is arranged directly above point O1. The scale lines are all arranged on the protractor in a ray shape starting from point O. A handle is provided on the periphery of the protractor. The hanging needle is movably connected to the protractor. The displacement adjustment module includes a first right-angled side, a second right-angled side and a hypotenuse. The first right-angled side is perpendicular to the protractor, the second right-angled side is closely attached to the protractor, and a plurality of third scale values are provided on the first right-angled side. The present invention improves the puncture rate, reduces the occurrence of complications, reduces the number of positioning CT scans, and shortens the time of the puncture operation.

Description

Technical Field

[0001] The present invention relates to a positioning and guiding device, specifically a positioning and guiding device for restoring a CT path and a method for using the same. Background Art

[0002] Lung cancer among lung diseases is a malignant tumor that seriously threatens human health. Moreover, its incidence and mortality rates have been increasing year by year, and the trend of younger patients is obvious. This poses an urgent requirement for clinicians to make an early diagnosis and treatment. Especially with the booming development of lung cancer targeted therapy, for lung masses, it is not only necessary to distinguish between benign and malignant through imaging, but also further pathological typing and gene mutation detection are required. This plays a very crucial guiding role in the choice of clinical treatment plans. However, most early tumor patients have atypical clinical and imaging manifestations and no obvious specificity. Based on the importance of pathological diagnosis and gene detection for treatment, the acquisition of lung biopsy tissue specimens has become particularly important. Percutaneous lung puncture is the best way to obtain diseased tissues for peripheral lung cancer, and there is an increasing demand for biopsies of peripheral pulmonary space-occupying lesions.

[0003] For peripheral lung diseases, the specimen source can be obtained through open-chest biopsy (with large trauma and high risk), and percutaneous lung puncture biopsy has relatively much lower trauma and risk. There are various imaging-guided methods for percutaneous lung puncture. CT has the advantages of high spatial resolution and being unaffected by gas and bones. Clinically, CT-guided puncture is currently the most commonly used imaging-guided method. CT-guided percutaneous lung biopsy was first reported in 1976 and has now become one of the main methods and important means for qualitative diagnosis and differential diagnosis of lung diseases. CT-guided percutaneous lung biopsy has high diagnostic and differential diagnostic value for various lung diseases, especially plays a key role in the diagnosis of pulmonary nodules. Although there are already various new methods for guiding CT-guided puncture, such as real-time CT fluoroscopy, laser positioning, electromagnetic navigation, etc., they all have limitations and have not been widely applied clinically.

[0004] Currently, most domestic hospitals use the surface grid locator technology under traditional cross-sectional images for CT-guided lung biopsy. However, CT positioning can only determine the puncture point, puncture depth, and angle. When doctors operate, they only have an accurate puncture positioning point without a reference object to choose from, which has high requirements for doctors' operations. Without precise reference, they can only perform punctures based on experience according to the parameters provided by CT, and need to perform multiple scans to determine the position. It is difficult to succeed in one attempt, and multiple punctures and multiple scans are required, increasing the risk of complications. Puncture of small lesions or lesions in complex parts is prone to failure, etc.

[0005] In other specialties, there is still a problem that the CT positioning path cannot be accurately restored after CT positioning.

[0006] Therefore, the accurate positioning guidance for improving puncture quality is an urgent problem to be solved. The positioning and guiding device of the present invention with multi-angle accurate reference and accurate path restoration of CT positioning path successfully solves this problem. Summary of the Invention

[0007] The purpose of the present invention is to provide a positioning and guiding device for restoring CT path and its using method, so as to solve the problem proposed in the above background technology that the path provided after CT positioning cannot be accurately restored and implemented. During the operation process, only the accurate puncture point can be known. The path provided by CT has no accurate reference as a guide, and only rich experience and feeling can be relied on, which increases the operation difficulty, increases the number of scanning times for adjusting the puncture direction, especially for puncture of small lesions or lesions in complex parts, the puncture success rate is greatly affected, the risk of complications increases, and the risk of serious complications increases.

[0008] To solve the above technical problems, the technical solution provided by the present invention is: a positioning and guiding device for restoring CT path, including a protractor, a hanging needle and a displacement adjustment module. The protractor is provided with a sliding groove, a plurality of scale lines and a plurality of first scale values. A plurality of second scale values are provided on the outer circumferential surface of the protractor. The first scale values include point O, point O1 and a plurality of angle values. Point O1 is arranged at the center of the protractor, and point O is arranged directly above point O1. The line segment OO1 formed by point O and point O1 is perpendicular to the diameter of the protractor. The scale lines are all arranged on the protractor in a ray shape starting from point O. The hanging needle is movably connected to the protractor, and the hanging needle is fixed at point O through a first fixed needle. The displacement adjustment module is arranged in a right triangle shape and is perpendicular to the protractor. The displacement adjustment module includes a first right-angled side, a second right-angled side and a hypotenuse. A plurality of third scale values are provided on the first right-angled side. The first right-angled side is perpendicular to the protractor. One end of the second right-angled side is fixed at point O1 through a second fixed needle, and the other end is provided with a slider at the bottom. The slider is adapted to the sliding groove, and the second right-angled side is closely attached to the protractor.

[0009] Further, a handle is provided on the periphery of the protractor.

[0010] Further, the sliding groove is arranged in an arc shape.

[0011] A using method of a positioning and guiding device is as follows: Step 1: First, hang the hanging needle at point O through the first fixed needle, fix one end of the second right-angled side of the moving adjustment module at point O1 through the second fixed needle, and install the slider in the sliding groove at the other end;

[0012] Step 2: According to the location of the lesion on the patient's CT film, the puncture position is selected, mainly prone, supine, and lateral positions, and a conventional chest CT scan is performed to obtain the best puncture plane, and the needle insertion direction and the angle 1 with the vertical line are selected. The distance d1 from the puncture point to the parietal pleura and the distance d2 from the puncture point to the lesion are measured, and the puncture point is marked on the patient's body surface. The patient is asked to maintain the position, and the length of the right angle side 14 is h1;

[0013] Step 3: Perform routine surgical preparations, determine the length of the sample, adjust the puncture needle, apply local infiltration anesthesia, align the center of the protractor with the puncture point, overlap the bottom edge of the protractor with the CT scan line, rotate the protractor along the bottom diameter until the hanging needle is suspended and parallel to the protractor, and record the degree of the hanging needle angle 2 as B;

[0014] Step 4: On the other side of the protractor OO1, find point D with an angle B on the periphery of the protractor with O1 as the vertex angle, take O1D as the relative zero starting edge, determine point D1 on the protractor according to the expected direction and angle 1, insert the needle along D1O1 to a depth of d1, and after CT scan confirms that the direction does not need to be adjusted, insert the needle to a depth of d2, and start the puncture needle to obtain tissue;

[0015] Step 5: Deviation adjustment, measure the distance a from the head or foot side, fix the displacement adjustment module at O1, fix the slider in the slide slot, the right triangle is perpendicular to the protractor, and rotates with the right angle side with O1 as the center to D1, O1D1 is the width h1, the distance between the puncture point and the lesion is d2, the deviation distance is based on X / a=h1 / d2, and X=h1*a / d2, then push the slider to point D2 at a distance equal to X from D1, and insert the needle along point D2O1 to a depth of d1. After CT scan confirms that the direction does not need to be adjusted, the needle is inserted to a depth of d2, and the puncture needle is started to take tissue.

[0016] Compared with the prior art, the advantages of the present invention are as follows: the present invention adopts the structure of a protractor, a hanging needle and a displacement adjustment module to achieve accurate reference to multiple angles and accurate path restoration of the CT positioning path; the present invention improves the puncture rate, reduces the occurrence of complications, reduces the number of positioning CT scans, and shortens the time of the puncture operation; the present invention is reasonably designed and worthy of vigorous promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a positioning and guiding device for restoring a CT path and a method for using the same;

[0018] Figure 2 is a structural schematic diagram of a displacement adjustment module;

[0019] Figure 3 It is a schematic diagram of the structure of the hanging needle;

[0020] Figure 4 It is a schematic diagram of the structure of the protractor;

[0021] As shown in the figure: 1. Protractor, 2. Plumb bob, 3. Displacement adjustment module, 4. Slide groove, 5. Scale lines, 6. First scale value, 7. Second scale value, 8. Point O, 9. Point O1, 10. Angle value, 11. First fixed needle, 12. First right-angled side, 13. Second right-angled side, 14. Hypotenuse, 15. Third scale value, 16. Second fixed needle, 17. Slide block, 18. Handle. Detailed implementation mode

[0022] Combined with the attached Figures 1-4 , the present invention will be introduced in detail.

[0023] When the present invention is specifically implemented, a positioning and guiding device for restoring the CT path is provided, including a protractor 1, a plumb bob 2 and a displacement adjustment module 3. The protractor 1 is provided with a slide groove 4, a plurality of scale lines 5 and a plurality of first scale values 6. A plurality of second scale values 7 are provided on the outer circumferential surface of the protractor 1. The first scale value 6 includes a point O8, a point O19 and a plurality of angle values 10. The point O19 is arranged at the center of the protractor 1, and the point O8 is arranged directly above the point O19. The line segment OO1 formed by the point O8 and the point O19 is perpendicular to the diameter of the protractor 1. The scale lines 5 are all arranged on the protractor 1 in a ray shape starting from the point O8. The plumb bob 2 is movably connected to the protractor 1, and the plumb bob 2 is fixed at the point O8 through the first fixed needle 11. The displacement adjustment module 3 is arranged in a right triangle shape and is perpendicular to the protractor 1. The displacement adjustment module 3 includes a first right-angled side 12, a second right-angled side 13 and a hypotenuse 14. A plurality of third scale values 15 are provided on the first right-angled side 12. The first right-angled side 12 is perpendicular to the protractor 1. One end of the second right-angled side 13 is fixed at the point O19 through the second fixed needle 16, and a slide block 17 is arranged at the bottom of the other end. The second right-angled side 13 is closely attached to the protractor 1, and the slide block 17 is adapted to the slide groove 5.

[0024] A handle 18 is provided on the periphery of the protractor 1.

[0025] The slide groove 5 is arranged in an arc shape.

[0026] A method for using a positioning and guiding device is as follows: Step 1: First, hang the plumb bob 2 at the point O8 through the first fixed needle 11, fix one end of the second right-angled side 13 of the mobile adjustment module 3 at the point O19 through the second fixed needle 16, and install the slide block 17 in the slide groove 4 at the other end;

[0027] Step 2: According to the location of the lesion on the patient's CT film, the puncture position is selected, mainly prone, supine, and lateral positions, and a conventional chest CT scan is performed to obtain the best puncture plane, and the needle insertion direction and the angle 1 with the vertical line are selected. The distance d1 from the puncture point to the parietal pleura and the distance d2 from the puncture point to the lesion are measured, and the puncture point is marked on the patient's body surface. The patient is asked to maintain the position, and the length of the right angle side 14 is h1;

[0028] Step 3: Perform routine surgical preparation, determine the sampling length, adjust the puncture needle, perform local infiltration anesthesia, align the center of the protractor 1 with the puncture point, overlap the bottom edge of the protractor 1 with the CT scan line, rotate the protractor 1 along the bottom diameter until the hanging needle 2 is suspended in the air and parallel to the protractor 1, and record the degree of the hanging needle angle 2 as B;

[0029] Step 4: On the other side of OO1 on the protractor 1, find point D with an angle B on the periphery of the protractor 1 with point O1 as the vertex angle, take O1D as the relative zero starting edge, determine point D1 on the protractor according to the expected direction and angle 1, insert the needle along D1O1 to a depth of d1, and after the CT scan confirms that the direction does not need to be adjusted, insert the needle to a depth of d2, and start the puncture needle to obtain tissue;

[0030] Step 5: Deviation adjustment, measure the distance a from the head side or foot side, fix the displacement adjustment module 3 at O1, fix the slider 17 in the slide groove 4, the right triangle is perpendicular to the protractor 1, and rotates with the right angle side with O1 as the center to D1, O1D1 is the width h1, the distance between the puncture point and the lesion is d2, the deviation distance is based on X / a=h1 / d2, and X=h1*a / d2 is obtained, and then push the slider 4 to the D2 point equal to X from D1, and insert the needle along the point D2O1 to a depth of d1. After the CT scan confirms that the direction does not need to be adjusted, the needle depth is inserted to d2, and the puncture needle is started to take tissue.

[0031] The specific implementation process of the positioning and guiding device for restoring the CT path and the use method thereof of the present invention is as follows:

[0032] Step 1: First, the hanging needle 2 is suspended at point O8 by the first fixing needle 11, and one end of the second right-angle side 13 of the movable adjustment module 3 is fixed at point O19 by the second fixing needle 16, and the other end is used to install the slider 17 in the slide groove 4;

[0033] Step 2: According to the location of the lesion on the patient's CT film, the puncture position is selected, mainly prone, supine, and lateral positions, and a conventional chest CT scan is performed to obtain the best puncture plane, and the needle insertion direction and the angle 1 with the vertical line are selected. The distance d1 from the puncture point to the parietal pleura and the distance d2 from the puncture point to the lesion are measured, and the puncture point is marked on the patient's body surface. The patient is asked to maintain the position, and the length of the right angle side 14 is h1;

[0034] Step 3: Perform routine surgical preparation, determine the sampling length, adjust the puncture needle, perform local infiltration anesthesia, align the center of the protractor 1 with the puncture point, overlap the bottom edge of the protractor 1 with the CT scan line, rotate the protractor 1 along the bottom diameter until the hanging needle 2 is suspended in the air and parallel to the protractor 1, and record the degree of the hanging needle angle 2 as B;

[0035] Step 4: On the other side of OO1 on the protractor 1, find point D with an angle B on the periphery of the protractor 1 with point O1 as the vertex angle, take O1D as the relative zero starting edge, determine point D1 on the protractor according to the expected direction and angle 1, insert the needle along D1O1 to a depth of d1, and after the CT scan confirms that the direction does not need to be adjusted, insert the needle to a depth of d2, and start the puncture needle to obtain tissue;

[0036] Step 5: Deviation adjustment, measure the distance a from the head side or foot side, fix the displacement adjustment module 3 at O1, fix the slider 17 in the slide groove 4, the right triangle is perpendicular to the protractor 1, and rotates with the right angle side with O1 as the center to D1, O1D1 is the width h1, the distance between the puncture point and the lesion is d2, the deviation distance is based on X / a=h1 / d2, and X=h1*a / d2 is obtained, and then push the slider 4 to the D2 point equal to X from D1, and insert the needle along the point D2O1 to a depth of d1. After the CT scan confirms that the direction does not need to be adjusted, the needle depth is inserted to d2, and the puncture needle is started to take tissue.

[0037] The present invention adopts the structure of a protractor, a hanging needle and a displacement adjustment module to realize accurate reference at multiple angles, accurately restore the CT positioning path, select the puncture position roughly according to the lesion position of the patient's CT film, mainly prone position, supine position and lateral position, perform a conventional chest CT scan, obtain a cross-sectional image, select the best puncture level on an imaging operation table, select the needle insertion direction and the angle 1 with the vertical line, the distance d1 from the puncture point to the parietal pleura, the distance d2 from the puncture point to the lesion, and the length h1 of the right-angle side 14, mark the puncture point on the patient's body surface, and instruct the patient to maintain the position; complete the operation according to the above steps, and the puncture success rate can be improved; the present invention improves the successful puncture rate, reduces the occurrence of complications, reduces the number of positioning CT scans, and shortens the time of the puncture operation; the present invention is reasonably designed and worthy of vigorous promotion.

[0038] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design structures and embodiments similar to the technical solution without creativity, which should all fall within the protection scope of the present invention.

Claims

1. A positioning and guiding device for restoring a CT path, comprising a protractor (1), a hanging needle (2), and a displacement adjustment module (3), characterized in that: The protractor (1) is provided with a chute (4), a number of scale lines (5) and a number of first scale values (6). A number of second scale values (7) are provided on the outer circumferential surface of the protractor (1). The first scale values (6) include a point O (8), a point O1 (9) and a number of angular values (10). The point O1 (9) is arranged at the center of the protractor (1). The point O (8) is arranged directly above the point O1 (9). The line segment OO1 formed by the point O (8) and the point O1 (9) is perpendicular to the diameter of the protractor (1). The scale lines (5) are all arranged on the protractor (1) in a ray shape starting from the point O (8). The plumb bob (2) is movably connected to the protractor (1). The plumb bob (2) is fixed at the point O (8) through a first fixed needle (11). The displacement adjustment module (3) is arranged in a right triangle shape and is perpendicular to the protractor (1). The displacement adjustment module (3) includes a first right-angled side (12), a second right-angled side (13) and a hypotenuse (14). A number of third scale values (15) are provided on the first right-angled side (12). The first right-angled side (12) is perpendicular to the protractor (1). One end of the second right-angled side (13) is fixed at the point O1 (9) through a second fixed needle (16), and a slider (17) is provided at the bottom of the other end. The second right-angled side (13) is closely attached to the protractor (1). The slider (17) is adapted to the chute.

2. The positioning and guiding device for restoring a CT path according to claim 1, characterized in that: A handle (18) is provided on the periphery of the protractor (1).

3. The positioning and guiding device for restoring a CT path according to claim 1, wherein: The chute (4) is arranged in an arc shape.

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