A positioning patch for determining the location of intracranial lesions and its use method

Abstract

The present invention discloses a positioning patch for determining the location of intracranial lesions and a method for using the patch, relating to the technical field of medical devices. The patch comprises a developing layer, an adhesive layer, and release paper. The developing layer is provided with a developing body, the shape of which can help medical personnel determine the location of the target. The adhesive layer is adhered to one side of the release paper and the other side of the developing layer. The adhesive layer is provided with a marking area with the same position and size as the developing body. The adhesive layer is used to adhere to the patient's head and be perpendicular to the scanning section of an electronic computed tomography scan. The present invention has a simple and practical structure. Compared with traditional positioning plates, the size and weight are smaller, the operation is easier, more efficient and convenient, and the marking is more precise. It can be used for rapid and accurate positioning when conducting physiological research, diagnosing or treating brain diseases, and is very suitable for widespread use in various types of hospitals.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a positioning patch for determining the location of intracranial lesions and a method of using the same. Background Art

[0002] For intracranial conditions, clinical practice typically uses a three-dimensional stereotactic apparatus or neuronavigation system to locate the lesion. Specialized instruments are then guided through the intracranial path to the target point, where surgical intervention is performed to investigate physiological conditions, diagnose, or treat brain disorders. This minimally invasive intracranial procedure is now well established.

[0003] Traditional stereotactic instruments are complex to operate and require a long learning curve for medical staff. They can easily obstruct the surgical field during surgery, are complex to process coordinate parameters, and are difficult to secure with metal positioning plates and accurately mark. This can lead to positioning errors and a lengthy operation process, making them unsuitable for emergency use. Summary of the Invention

[0004] The purpose of the present invention is to provide a positioning patch for determining the location of intracranial lesions and a method of using the same, so as to solve the problems existing in the above-mentioned prior art and make the positioning operation of the intracranial lesion site convenient, fast, accurate and efficient.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] The present invention provides a positioning patch for determining the location of intracranial lesions, comprising a developing layer, an adhesive layer, and release paper. A developing body is provided in the developing layer, and the shape of the developing body can help medical personnel determine the location of the target. The release paper is adhered to one side of the adhesive layer, and the developing layer is adhered to the other side. A marking area with the same position and size as the developing body is provided on the adhesive layer. The adhesive layer is used to adhere to the patient's head and be perpendicular to the scanning section of an electronic computer tomography scan.

[0007] Preferably, the developing layer is an integrally formed injection molded part.

[0008] Preferably, the material of the developing layer includes any one of silica gel and plastic; the material of the developing body is the same as that of the developing layer and is uniformly mixed with a developer, and the developer is barium sulfate.

[0009] Preferably, the adhesive layer is a double-sided adhesive layer.

[0010] Preferably, the adhesive layer and the release paper have the same size and are both provided with a pressing strip, the pressing strip is provided protruding from the edge of the developing layer, the release paper is provided with an easy-tear strip protruding from the edge of the adhesive layer, and at least one convex strip is also provided on the edge of the developing layer, the convex strip is provided protruding from the adhesive layer.

[0011] Preferably, the marking area is a hollow groove.

[0012] Preferably, the developing body comprises a plurality of V-shaped members with an angle of 45°, wherein one straight side of the V-shaped members is stacked and the other oblique sides are arranged in parallel at equal intervals.

[0013] Preferably, the V-shaped members are arranged in two groups in a row without gaps, and each group of V-shaped members includes a first V-shaped member, a second V-shaped member and a third V-shaped member, the straight side of the third V-shaped member is 3 times the length of the straight side of the first V-shaped member, the straight side of the second V-shaped member is 2 times the length of the straight side of the first V-shaped member, and the straight side ends of the first V-shaped member, the second V-shaped member and the third V-shaped member are flush, and the straight sides of the third V-shaped members of the two groups of V-shaped members are connected as a whole and are all arranged parallel to the long sides of the developing layer.

[0014] Preferably, the oblique sides of the first V-shaped member, the second V-shaped member and the third V-shaped member are all 1 / 2 the length of the straight side of the first V-shaped member. times; the cross-section of the V-shaped member is circular, regular polygonal, elliptical or rhombus, the straight sides of the first V-shaped member, the second V-shaped member and the third V-shaped member are arranged at equal intervals, the cross-sectional spacing of the straight sides of adjacent V-shaped members is 0.5mm-1mm, and the length of the straight side of the first V-shaped member is 20mm; the straight sides of adjacent V-shaped members are connected by a fixing strip, and the cross-sectional width of the fixing strip is smaller than the cross-sectional width of the V-shaped member.

[0015] The present invention also discloses a method for using the positioning patch for determining the location of intracranial lesions, which specifically includes the following steps:

[0016] S1. Perform a first spiral CT scan of the patient's head to determine the approximate location of the lesion within the skull and the longest midline direction. Based on the spiral CT scan image, attach a locating sticker for locating the intracranial lesion to each side of the patient's skull perpendicular to the horizontal scanning section, with the tip of the sticker facing upward.

[0017] S2. Perform a second spiral computed tomography scan of the patient's head. Select a number of imaging points formed by the imaging body and the horizontal scanning section where the lesion appears in the computer, and find the first reference horizontal scanning section where the lesion is set at the center. Based on the layout and size of the imaging points in the first reference horizontal scanning section, measure the distance a between two imaging points belonging to the same V-shaped member within the first reference horizontal scanning section. Find the straight edge and hypotenuse of the corresponding V-shaped member on the positioning sticker on one side of the head, tear off the imaging layer, and draw a line segment perpendicular to the straight edge of the V-shaped member, intersecting the hypotenuse, with the length of the line segment being a. The plane where the line segment lies is the central horizontal plane of the lesion setting center O on the patient's head. A straight line is made perpendicular to the line connecting the two imaging points in the first reference horizontal scanning section and passes through the lesion setting center O. The distance b from one of the imaging points to the straight line is measured in the first reference horizontal scanning section, and the projection point O1 corresponding to the lesion setting center O is found on the line segment with a length of a. Similarly, the projection point O2 corresponding to the lesion setting center O on the positioning sticker on the other side of the head is found. The two points O1 and O2 determined on the central horizontal plane are respectively used to fix the two ends of the brain stereotactic surgery head frame;

[0018] S3. If the lesion is spherical or its longest midline is in the center of the horizontal scanning section, a suitable puncture point can be found on the central horizontal plane. If the lesion is irregularly long and its longest midline passes through a non-central area of ​​the horizontal scanning section, it is necessary to select several imaging points formed by the imaging body and a second reference oblique scanning section where the longest midline of the lesion appears in the computer.

[0019] S4. Based on the layout and size of the imaging points in the second reference oblique scanning section, and measuring the distance a between two imaging points belonging to the same V-shaped member in the second reference oblique scanning section, use the same operating method as S2 to draw an oblique line segment and determine the corresponding projection point O3 of the lesion setting center O on the scalp in the second reference oblique scanning section. The plane where the oblique line segment lies is the oblique plane of the longest midline of the lesion on the patient's head. Rotate the stereotactic surgical head frame and slide the puncture slider on the stereotactic surgical head frame so that the longest midline of the puncture slider is coplanar with the oblique plane. At the same time, aim the puncture slider at O3. At this time, the intersection of the midline of the puncture slider and the patient's head is the puncture point O3.

[0020] Compared with the prior art, the present invention has achieved the following technical effects:

[0021] The present invention has a simple and practical structure. Compared with traditional positioning plates, it is smaller in size and mass, easier to operate, more convenient and efficient, and has precise markings. It can perform fast and accurate positioning when conducting physiological research, diagnosing or treating brain diseases, and is very suitable for popular use in various types of hospitals. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. 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 any creative work.

[0023] Figure 1 This is a schematic structural diagram of a positioning sticker for determining the location of an intracranial lesion in Example 1 of the present invention;

[0024] Figure 2 Schematic diagram of the structure of the developing layer in Example 1 of the present invention;

[0025] Figure 3 This is embodiment 1 of the present invention Figure 2 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 4 Schematic diagram of the structure of the adhesive layer in Example 1 of the present invention;

[0027] Figure 5 Schematic diagram of the structure of the release paper in Example 1 of the present invention;

[0028] Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning sticker used to determine the location of intracranial lesions in Example 1 of the present invention;

[0029] Figure 7 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 1 ;

[0030] Figure 8 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 2 ;

[0031] Figure 9 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 3 ;

[0032] Figure 10 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 4 ;

[0033] Figure 11 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 5 ;

[0034] Figure 12 This is a schematic diagram of the method of using the positioning sticker in Example 2 of the present invention. Figure 6 ;

[0035] In the figure: 1-developer, 2-developer layer, 3-adhesive layer, 4-release paper, 5-pressing strip, 6-convex strip, 7-easy-tear strip, 8-straight edge, 9-bevel edge, 10-hollow groove, 11-positioning sticker, 12-brain stereotactic surgery head frame. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0037] The purpose of the present invention is to provide a positioning patch for determining the location of intracranial lesions and a method of using the same, so as to solve the problems existing in the prior art and make the positioning operation of the intracranial lesion site convenient, fast, accurate and efficient.

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] Example 1

[0040] like Figures 1 to 6 As shown, this embodiment provides a positioning patch for locating intracranial lesions. The patch comprises a developing layer 2, an adhesive layer 3, and a release paper 4. The developing layer 2 contains a developing element 1, the shape of which helps medical personnel determine the target's location. The adhesive layer 3 is adhered to one side with the release paper 4 and the other side with the developing layer 2. The adhesive layer 3 includes a marking area with the same position and size as the developing element 1. The adhesive layer 3 is intended to be adhered to the patient's head perpendicular to the scanning plane of a computed tomography scan. By removing the release paper 4, the adhesive layer 3 can be adhered to the patient's head.

[0041] As an optional solution, in this embodiment, the developing layer 2 is an integrally formed injection molded part, which plays a role in fixing and limiting the developing body 1.

[0042] As an optional solution, the material of the developing layer 2 in this embodiment includes either silicone or plastic. The developing body 1 is made of the same material as the developing layer 2 and is uniformly mixed with a developer, such as barium sulfate. In this embodiment, the developing body 1 is injection-molded from a plastic material mixed with the developer, and preferably has a circular cross-section for better development. Both the developing body 1 and the developing layer 2 are flexible and elastic, flexing with the curvature of the scalp, ensuring a close fit and resisting shedding.

[0043] As an optional solution, in this embodiment, the adhesive layer 3 is a double-sided adhesive layer, preferably a foam double-sided adhesive layer, which can prevent the positioning sticker 11 from being displaced and protruding, making the positioning more accurate.

[0044] As an optional solution, in this embodiment, the adhesive layer 3 and the release paper 4 have the same size and are both provided with a pressing strip 5. The pressing strip 5 is provided to protrude from the edge of the developing layer 2. The pressing strip 5 is preferably non-sticky. The pressing strip 5 can be pressed when tearing off the developing layer 2 to avoid tearing off the adhesive layer 3 together. An easy-tear strip 7 is provided on the edge of the release paper 4 protruding from the adhesive layer 3 to facilitate tearing off the release paper 4. At least one convex strip 6 is also provided on the edge of the developing layer 2. The convex strip 6 is provided to protrude from the adhesive layer 3 to provide a force point for removing the developing layer 2.

[0045] As an optional solution, in this embodiment, the marking area is a hollowed-out groove 10. The adhesive layer 3 is hollowed out at the projection location of the developer 1. After the computed tomography (CT) scan is completed, the developer layer 2 is removed, and the adhesive layer 3 remains in place, exposing the scalp at the hollowed-out groove 10. This allows marking of the patient's exposed scalp based on the location determined on the scan film. Alternatively, the adhesive layer can be partially lifted to create a marking.

[0046] As an alternative, Figure 2 In the embodiment shown, the developer 1 comprises several V-shaped members formed at a 45° angle. The V-shaped members have one straight edge 8 stacked on top of the other, and the other oblique edges 9 spaced parallel to each other. In this embodiment, the V-shaped members are preferably attached with their sharp corners facing the top of the skull to avoid misjudgment. The positions of the oblique edges 9 and straight edges 8 on CT projections are interchangeable when the sharp corners face upward or downward. If the projections of the oblique edges 9 and straight edges 8 are blurred or similar in size, the positions of the straight edges 8 and 9 can be easily misjudged.

[0047] As an optional solution, in this embodiment, two groups of V-shaped members are arranged in a row without gaps, and each group of V-shaped members includes a first V-shaped member, a second V-shaped member and a third V-shaped member. The straight side 8 of the third V-shaped member is three times the length of the straight side 8 of the first V-shaped member, and the straight side 8 of the second V-shaped member is twice the length of the straight side 8 of the first V-shaped member. The ends of the straight sides 8 of the first V-shaped member, the second V-shaped member and the third V-shaped member are flush to form a reference line. The straight sides 8 of the third V-shaped members of the two groups of V-shaped members are connected as a whole and are both arranged parallel to the long sides of the developing layer 2, so that the specific position of the CT projection can be determined according to the number of intersection points of the straight sides 8.

[0048] As an optional solution, in this embodiment, the oblique sides 9 of the first V-shaped member, the second V-shaped member and the third V-shaped member are all 1 / 2 the length of the straight side 8 of the first V-shaped member. times; the cross-section of the V-shaped member is circular, regular polygonal, elliptical or rhombus, preferably circular and regular polygonal, the straight sides 8 of the first V-shaped member, the second V-shaped member and the third V-shaped member are arranged at equal intervals, the cross-sectional spacing of the straight sides 8 of adjacent V-shaped members is 0.5mm-1mm, and the length of the straight side 8 of the first V-shaped member is 20mm; the straight sides 8 of adjacent V-shaped members are connected by a fixing strip for easy shaping, the cross-sectional width of the fixing strip is smaller than the cross-sectional width of the V-shaped member, so as to facilitate direct finding of the corresponding developing point of the V-shaped member, and the material of the fixing strip preferably does not contain a developer.

[0049] Compared with traditional positioning plates, the positioning sticker 11 of this embodiment is smaller in size and mass, easier to operate, more convenient and efficient, and has precise marking; it can be used for rapid and accurate positioning when conducting physiological research, diagnosing or treating brain diseases; compared with other cranial positioning stickers, it has clearer imaging and more convenient and clear marking.

[0050] Example 2

[0051] like Figures 7 to 12 As shown, this embodiment provides a method for using the positioning sticker 11 for determining the location of an intracranial lesion according to the first embodiment, which specifically includes the following steps:

[0052] S1. Perform a first spiral CT scan of the patient's head to determine the approximate location of the lesion within the skull and the direction of its longest midline. Based on the spiral CT scan image, a positioning sticker 11 for determining the location of the intracranial lesion is attached to each side of the patient's skull perpendicular to the horizontal scanning section, with the tip of the positioning sticker 11 facing upward. The ratio of the spiral CT scan image to the actual object is 1:1, so the values ​​obtained in the image can be directly applied to the positioning sticker.

[0053] S2, perform a second spiral CT scan on the patient's head, select several imaging points formed by the imaging body 1 and the horizontal scanning section where the lesion appears in the computer, and find the first reference horizontal scanning section where the lesion is set at the center. According to the layout and size of the imaging points in the first reference horizontal scanning section, measure the distance a between two imaging points belonging to the same V-shaped part in the first reference horizontal scanning section, find the straight edge 8 and the oblique edge 9 of the V-shaped part corresponding to the positioning sticker 11 on one side of the head, tear off the imaging layer 2, draw a line segment perpendicular to the straight edge 8 of the V-shaped part and intersect with the oblique edge 9, and make the line segment The length is a, then the plane where the line segment lies is the central horizontal plane of the lesion setting center O on the patient's head. A straight line is made perpendicular to the line connecting the two imaging points in the first reference horizontal scanning section and passes through the lesion setting center O. The distance b from one of the imaging points to the straight line is measured in the first reference horizontal scanning section, and the projection point O1 corresponding to the lesion setting center O is found on the line segment with a length of a; similarly, the projection point O2 corresponding to the lesion setting center O on the positioning sticker 11 on the other side of the head is found. The two points O1 and O2 determined on the central horizontal plane are respectively used to fix the two ends of the brain stereotactic surgery head frame 12;

[0054] S3: If the lesion is spherical or the longest midline of the lesion is in the center of the horizontal scanning section, a suitable puncture point can be found on the central horizontal plane. If the lesion is irregular and long and the longest midline of the lesion passes through a non-central area of ​​the horizontal scanning section, it is necessary to select several imaging points formed by the imaging body 1 and a second reference oblique scanning section where the longest midline of the lesion appears in the computer.

[0055] S4. Based on the layout and size of the imaging points in the second reference oblique scanning section, and measuring the distance a between the two imaging points belonging to the same V-shaped part in the second reference oblique scanning section, use the same operation method as S2 to draw an oblique line segment and determine the projection point O3 corresponding to the lesion setting center O on the scalp in the second reference oblique scanning section. The plane where the oblique line segment lies is the oblique plane of the longest midline of the lesion on the patient's head. Rotate the stereotactic surgical head frame 12 and slide the puncture slider on the stereotactic surgical head frame 12 so that the longest midline (central axis) of the puncture slider is coplanar with the oblique plane. At the same time, aim the puncture slider at O3. At this time, the intersection of the midline of the puncture slider and the patient's head is the puncture point O3.

[0056] In this embodiment, the developer 1 is composed of one or two sets of markings, each set comprising three V-shaped members. Each V-shaped member consists of a straight edge 8 and a beveled edge 9. The point where the three straight edges 8 meet at the same angle forms a reference line. The beveled edges 9 form a 45° angle with the straight edges 8. The three straight edges 8 are parallel and connected to each other. The three beveled edges 9 are equally spaced and parallel to each other. The tops of the three beveled edges 9 are, from left to right, 20 mm, 40 mm, and 60 mm from the reference line, respectively.

[0057] Specifically, such as Figures 7 to 12 As shown, point O is the lesion setting center, and O1, O2, and O3 are the corresponding projection points of the lesion setting center on the scalp. Stick the positioning sticker 11 on the scalp on both sides of the head perpendicular to the scanning plane. Under CT scanning, the lesion setting center is shown as "point O". Figure 10 The projection surface features shown are Figure 8 The cross-sectional view of the second reference oblique scanning section shows that the positioning sticker 11 and the developer 1 form several points on the scanning section. Among them, from left to right, they are tangent to the vertical side 8 of the third V-shaped member, the straight side 8 of the second V-shaped member, and the oblique side 9, forming transverse points K1, J1, and H1 respectively. At this time, the length of H1J1 is equal to the length of h1J1, and the line "H1J1" can be marked on the scalp. The distance of "OJ1" in the Y-axis direction is equal to "O1J1", and the line "O1J1" can be marked on the scalp. The intersection O1 of the scalp marking lines "H1J1" and "O1J1" is the relative position of the lesion center on the scalp; the measurement positions of other positions and planes are the same as above. Among them, the line connecting the projection points on both sides of the V-shaped member on the scalp is approximately regarded as a straight line due to the unclear curvature, which facilitates distance estimation.

[0058] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A positioning patch for determining the location of intracranial lesions, characterized by: The device comprises a developing layer, an adhesive layer, and release paper. The developing layer contains a developing element, the shape and size of which can help medical personnel determine the location of a target. The adhesive layer is adhered to one side of the releasing paper and the developing layer is adhered to the other side. The adhesive layer is provided with a marking area having the same position and size as the developing element. The adhesive layer is used to adhere to the patient's head and be perpendicular to the scanning plane of the electronic computed tomography scan. The developing body includes a plurality of V-shaped members with an included angle of 45 degrees, wherein one straight side of the V-shaped member is stacked and the other oblique sides are arranged in parallel with equal intervals.

2. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The developing layer is an integrally formed injection molded part.

3. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The material of the developing layer includes any one of silica gel and plastic; the material of the developing body is the same as that of the developing layer and is uniformly mixed with a developer, and the developer is barium sulfate.

4. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The bonding layer is a double-sided adhesive layer.

5. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The adhesive layer and the release paper have the same size and are both provided with a pressing strip, which protrudes from the edge of the developing layer. The release paper is provided with an easy-tear strip on the edge of the adhesive layer. At least one convex strip is also provided on the edge of the developing layer, and the convex strip protrudes from the adhesive layer.

6. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The marking area is a hollow groove.

7. The positioning patch for determining the location of intracranial lesions according to claim 1, characterized in that: The V-shaped members are arranged in two groups in a row without gaps, and each group of V-shaped members includes a first V-shaped member, a second V-shaped member and a third V-shaped member. The straight side of the third V-shaped member is 3 times the length of the straight side of the first V-shaped member, and the straight side of the second V-shaped member is 2 times the length of the straight side of the first V-shaped member. The ends of the straight sides of the first V-shaped member, the second V-shaped member and the third V-shaped member are flush, and the straight sides of the third V-shaped members of the two groups of V-shaped members are connected as a whole and are all arranged parallel to the long sides of the developing layer.

8. The positioning patch for determining the location of intracranial lesions according to claim 7, characterized in that: The hypotenuse of the first V-shaped member, the second V-shaped member and the third V-shaped member is half the length of the straight side of the first V-shaped member. times; the cross-section of the V-shaped member is circular, regular polygonal, elliptical or rhombus, the straight sides of the first V-shaped member, the second V-shaped member and the third V-shaped member are arranged at equal intervals, the cross-sectional spacing of the straight sides of adjacent V-shaped members is 0.5mm-1mm, and the length of the straight side of the first V-shaped member is 20mm; the straight sides of adjacent V-shaped members are connected by a fixing strip, and the cross-sectional width of the fixing strip is smaller than the cross-sectional width of the V-shaped member.

9. A method for using the positioning patch for determining the location of intracranial lesions according to any one of claims 1 to 8, characterized in that: The specific steps include: S1. Perform a first spiral CT scan of the patient's head to determine the approximate location of the lesion within the skull and the longest midline direction. Based on the spiral CT scan image, attach a locating sticker for locating the intracranial lesion to each side of the patient's skull perpendicular to the horizontal scanning section, with the tip of the sticker facing upward. S2. Perform a second spiral computed tomography scan of the patient's head. Select a number of imaging points formed by the imaging body and the horizontal scanning section where the lesion appears in the computer, and find the first reference horizontal scanning section where the lesion is set at the center. Based on the layout and size of the imaging points in the first reference horizontal scanning section, measure the distance a between two imaging points belonging to the same V-shaped member within the first reference horizontal scanning section. Find the straight edge and hypotenuse of the corresponding V-shaped member on the positioning sticker on one side of the head, tear off the imaging layer, and draw a line segment perpendicular to the straight edge of the V-shaped member, intersecting the hypotenuse, with the length of the line segment being a. The plane where the line segment lies is the central horizontal plane of the lesion setting center O on the patient's head. A straight line is made perpendicular to the line connecting the two imaging points in the first reference horizontal scanning section and passes through the lesion setting center O. The distance b from one of the imaging points to the straight line is measured in the first reference horizontal scanning section, and the projection point O1 corresponding to the lesion setting center O is found on the line segment with a length of a. Similarly, the projection point O2 corresponding to the lesion setting center O on the positioning sticker on the other side of the head is found. The two points O1 and O2 determined on the central horizontal plane are respectively used to fix the two ends of the brain stereotactic surgery head frame; S3. If the lesion is spherical or its longest midline is in the center of the horizontal scanning section, a suitable puncture point can be found on the central horizontal plane. If the lesion is irregularly long and its longest midline passes through a non-central area of ​​the horizontal scanning section, it is necessary to select several imaging points formed by the imaging body and a second reference oblique scanning section where the longest midline of the lesion appears in the computer. S4. Based on the layout and size of the imaging points in the second reference oblique scanning section, and measuring the distance a between two imaging points belonging to the same V-shaped member in the second reference oblique scanning section, use the same operating method as S2 to draw an oblique line segment and determine the corresponding projection point O3 of the lesion setting center O on the scalp in the second reference oblique scanning section. The plane where the oblique line segment lies is the oblique plane of the longest midline of the lesion on the patient's head. Rotate the stereotactic surgical head frame and slide the puncture slider on the stereotactic surgical head frame so that the longest midline of the puncture slider is coplanar with the oblique plane. At the same time, aim the puncture slider at O3. At this time, the intersection of the midline of the puncture slider and the patient's head is the puncture point O3.

Images