Portable skull image axial scanning baseline display composite ruler

Abstract

The utility model discloses a portable skull image axial scanning baseline display composite ruler. The composite ruler comprises a main ruler, two auxiliary rulers and two adjustable bolts, the upper end of the main ruler is connected and fixed with the first auxiliary ruler through the first adjustable bolt, and the upper end of the main ruler is connected and fixed with the second auxiliary ruler through the second adjustable bolt; the main ruler is provided with a hollow sliding rail, and the position of the second auxiliary ruler can be adjusted through the sliding rail. The two auxiliary rulers are arranged on the back of the main ruler, are vertical to the main ruler during use, and are overlapped front and back in a storage state; the two adjustable bolts are each composed of a knob screw and a nut. The head axial image scanning device is portable, non-invasive, simple to operate and high in accuracy, and realizes body surface display of a head axial image scanning base line on the scalp of a patient, so that a doctor can be assisted in accurately positioning projections of upper and lower bounds and front and back bounds of tumors and hematoma on the scalp; and hematoma puncture point positioning, neuroendoscopy assisted hematoma removal flap design planning and craniotomy flap design planning are facilitated.

Description

[Technical field]

[0001] The utility model relates to the technical field of medical instruments, in particular to a portable head image axial scanning baseline display composite ruler. [Background technology]

[0002] The puncture positioning of cerebral hemorrhage, neuroendoscopic-assisted hematoma removal, and the design of craniotomy flaps are closely related to the outcome of neurosurgery. Accurate positioning can significantly improve the success rate of surgery, reduce unnecessary iatrogenic injuries and postoperative complications. Existing positioning technologies mainly include image-based neuronavigation systems and empirical incision line positioning technologies based on preoperative image reading by surgeons. Although the former has high accuracy, the navigation equipment is expensive, the operation is relatively complicated, and the operation time is increased. In addition, it is time-consuming and laborious to scan the navigation sequence thin-layer images separately, which limits the use of neuronavigation technology in emergency surgeries such as spontaneous cerebral hemorrhage, traumatic intracranial hematoma, and brain herniation caused by intracranial space-occupying lesions. At the same time, small local hospitals may not have the relevant equipment and application conditions. The latter is the most commonly used preoperative positioning and flap planning technology in clinical practice. The surgeon determines the surgical approach and incision line drawing by reading the film, combining his own anatomical knowledge and the internationally recognized cranial structure positioning method. This method is greatly affected by human subjective factors and may produce deviations due to the different knowledge reserves and clinical experience of the surgeon.

[0003] If the baseline of the image tomography can be displayed on the patient's body surface clinically, the doctor can accurately locate the scope and position of the intracranial lesion through the anterior and posterior boundaries and the upper and lower boundaries. At the same time, the maximum level required for hematoma puncture can be determined and the puncture and drainage path can be formulated. However, in actual clinical work, due to factors such as the patient's state of consciousness and cooperation ability, not all patients can perform cranial imaging scans based on the canthus-ear line (OM line) as the baseline. The surgeon cannot obtain the image scan baseline when reading the film. Even if there is an indicator in the lower corner of the image, it is not a surface projection line and cannot help the doctor guide the incision line drawing. Therefore, a simple, convenient and easy-to-operate tool is needed to easily, accurately and quickly convert the axial tomography baseline of the cranial image and its parallel lines into a surface projection on the head. [Summary of the invention]

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a portable cranial image axial scanning baseline display composite ruler to realize the surface transformation display of the cranial image axial tomographic scanning baseline on the patient's head, and to guide the surgeon in preoperative positioning, craniotomy flap and surgical approach planning and design.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme.

[0006] A composite ruler for displaying a baseline of a cranial image axial scanning comprises a main ruler, a secondary ruler 1, a secondary ruler 2, an adjustable bolt 1, an adjustable bolt 2 and a hollow sliding track; the main ruler has an adjustable bolt 1 fixed at its upper end, the adjustable bolt 1 connects and fixes the secondary ruler 1 to the main ruler, the main ruler has a hollow sliding track, the sliding track has a movable adjustable bolt 2, the adjustable bolt 2 connects the secondary ruler 2 to the main ruler.

[0007] As a further description of the above technical solution: the front of the main ruler is marked with a scale with a minimum unit of 1 mm, and a vertical intersection point between the main ruler and the auxiliary ruler is the starting point of the zero scale of the main ruler.

[0008] As a further description of the above technical solution: the front side of the secondary ruler 1 is marked with a scale with the minimum unit of 1mm, and the vertical intersection point of the secondary ruler 1 and the main ruler is the starting point of the zero scale of the secondary ruler 1.

[0009] As a further description of the above technical solution: the main ruler, auxiliary ruler one and auxiliary ruler two have the same width, and auxiliary ruler one and auxiliary ruler two are both located on the back of the main ruler. When in use, auxiliary ruler one and auxiliary ruler two are perpendicular to the main ruler, and the two auxiliary rulers are parallel to each other and attached to the patient's skin; when in the storage state, auxiliary ruler one and auxiliary ruler two overlap front and back on the back of the main ruler.

[0010] As a further description of the above technical solution: the adjustable bolt 1 and the adjustable bolt 2 are completely identical in size, structure and function, and both are composed of a knob screw and a nut used in conjunction with the screw. The adjustable bolt 1 is composed of a knob screw 1 and a nut 1; the adjustable bolt 2 is composed of a knob screw 2 and a nut 2.

[0011] As a further description of the above technical solution: the main ruler is provided with a hollow sliding track, and a movable adjustable bolt 2 is provided on the sliding track. When the adjustable bolt 2 is in a loose state, the auxiliary ruler 2 adjusts its relative position on the main ruler by sliding, and sets the vertical distance between it and the auxiliary ruler 1.

[0012] As a further description of the above technical solution: the knob screw and nut are used in pairs, and can be loosened or tightened to adjust the pressure between the secondary ruler and the main ruler. When the adjustable bolt is loosened, the pressure between the secondary ruler and the main ruler is reduced, the friction is reduced, and the secondary ruler can rotate 360 ​​degrees with the knob screw as the axis.

[0013] The utility model has the following beneficial effects:

[0014] The utility model adjusts two knobs to make the auxiliary ruler one and the auxiliary ruler two perpendicular to the main ruler, thereby achieving mutual parallelism between the two, simulating two tomographic scanning baselines, and then using the outer canthus, zygomatic process and external auditory canal as body surface landmarks for positioning, so that the lower edge of the auxiliary ruler passes through the outer canthus or zygomatic process, and the upper edge of the auxiliary ruler two passes through the external auditory canal, and then reads the vertical distance (number of layers apart x thickness of each layer) between the scanning layer of the outer canthus or zygomatic process and the scanning layer of the external auditory canal on the image film, and sets the obtained value as the vertical distance between the two auxiliary rulers and fixes it. At this time, the straight line drawn by the two auxiliary rulers is the image scanning baseline.

[0015] When the knob screw is in the loose state, the two sub-rules can rotate arbitrarily with the knob screw as the axis. The second sub-rule can also adjust the relative position on the sliding track to set the distance with the first sub-rule. Therefore, the ruler can be used regardless of whether the operation involves the left or right side of the brain. When performing left-side brain surgery, the two sub-rules can be perpendicular to the main ruler to form an "F" shape. Conversely, when performing right-side brain surgery, the two sub-rules can be rotated 180° with the knob screw as the axis and then perpendicular to the main ruler to form a horizontally flipped mirror "F" shape. The axial scanning baseline of the skull image can be simply, quickly and accurately converted and displayed on the human body surface, which is beneficial to the design of the hematoma puncture point and craniotomy flap.

[0016] When the knob screw is in the loose state, the two sub-rules are rotated to the back of the main ruler, and sub-rule 2 slides to the end of the sliding track away from adjustable bolt 1. At this time, the main ruler and the two sub-rules overlap front and back. After tightening the knob screw, they are stored, taking up little space and being easy to carry. They can be stored in the pocket of a white coat and used at any time.

Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a front schematic diagram of an embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of the back side of an embodiment of the utility model;

[0020] Figure 4 It is a back perspective schematic diagram of an embodiment of the utility model;

[0021] Figure 5 It is a schematic diagram of the relationship between the adjustable bolt 2, the main ruler, the auxiliary ruler 2 and the hollow sliding track in one embodiment of the utility model;

[0022] Figure 6 This is an exploded schematic diagram of a knob screw and a nut in one embodiment of the utility model;

[0023] Figure 7This is a schematic diagram of folding and storing the utility model in one embodiment;

[0024] Figure 8 It is a schematic diagram of a second variation of an embodiment of the utility model;

[0025] The attached drawings are marked with: 1-main ruler, 2-secondary ruler one, 3-secondary ruler two, 4-adjustable bolt one, 41-knob screw one, 42-nut one, 5-adjustable bolt two, 51-knob screw two, 52-nut two, 6-hollow sliding track. [Specific implementation method]

[0026] In order to make the technical means, creative features, objectives and benefits achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods and drawings.

[0027] See also Figures 1 to 7 The utility model comprises a main ruler 1, a sub-rule 2, a sub-rule 3, an adjustable bolt 4, an adjustable bolt 5 and a hollow sliding track 6; the main ruler 1 has an adjustable bolt 4 at a fixed position at the upper end, the adjustable bolt 4 connects and fixes the sub-rule 2 to the main ruler 1, the main ruler 1 has a hollow sliding track 6, the sliding track 6 has a movable adjustable bolt 5, and the adjustable bolt 4 connects the sub-rule 3 to the main ruler 1.

[0028] See also Figures 1 to 4 , is the working state of an embodiment of the utility model. The utility model reduces the pressure between the auxiliary scale 2 and the main scale 1 by adjusting the knob screw 1 41, thereby reducing the friction between the two, so that the auxiliary scale 2 rotates 90° with the knob screw 1 41 as the axis. When the auxiliary scale 2 is perpendicular to the main scale 1 and the vertical intersection point of the main scale 1 and the auxiliary scale 2 is the zero scale starting point, tighten the knob screw 1 41 to increase the pressure and friction between the auxiliary scale 2 and the main scale 1, so that the two are perpendicular to each other.

[0029] See also Figures 1 to 4 Similarly, when the utility model is in working state, the pressure between the auxiliary ruler 23 and the main ruler 1 is reduced by adjusting the knob screw 2 51, thereby reducing the friction between the two, so that the auxiliary ruler 23 rotates 90 degrees with the knob screw 2 51 as the axis. When the auxiliary ruler 23 is perpendicular to the main ruler 1, tighten the knob screw 2 51 to increase the pressure and friction between the auxiliary ruler 23 and the main ruler 1, so that the two are perpendicular to each other.

[0030] Please continue reading Figures 1 to 4 When the auxiliary ruler 1 2 and the auxiliary ruler 2 3 are respectively perpendicular to the main ruler 1, the auxiliary ruler 1 2 and the auxiliary ruler 2 3 are parallel to each other.

[0031] Read the vertical distance between the outer canthus or zygomatic process scanning plane and the external auditory canal scanning plane on the patient's head axial scan image, that is, the number of layers between the outer canthus or zygomatic process scanning plane and the external auditory canal scanning plane x CT scanning layer thickness, and set the obtained value X as the vertical distance between the two rulers. Loosen the adjustable bolt 25 so that the position of the secondary ruler 23 can be adjusted on the sliding track 6. At this time, read the scale on the main ruler 1 as X, align the upper edge of the secondary ruler 23 with the X scale, and tighten the adjustable bolt 25 to fix it. Use the outer canthus, zygomatic process, and external auditory canal as the body surface landmarks for positioning, so that the lower edge of the secondary ruler 2 passes through the outer canthus or zygomatic process, and the upper edge of the secondary ruler 23 passes through the external auditory canal. At this time, the straight line where the lower edge of the secondary ruler 2 and the upper edge of the secondary ruler 23 are located and the line parallel to them is the image scanning reference line.

[0032] See also Figures 5 and 6 , adjust the knob screw 41 to make it in a loose state, rotate the auxiliary ruler 2 to the back of the main ruler 1, and overlap it with the main ruler 1 front and back, and then adjust the knob screw 41 to make it in a tight state, so that the auxiliary ruler 2 is fixed on the main ruler 1.

[0033] Please continue reading Figures 5 and 6 , adjust the knob screw 2 51 to make it in a loose state, slide the secondary ruler 2 3 to the end of the sliding track 6 away from the adjustable bolt 1 4, and rotate the secondary ruler 2 3 to the back of the main ruler 1, so that the main ruler 1 and the secondary ruler 2 3 overlap front and back, and then tighten the knob screw 2 51 to fix the secondary ruler 2 3 on the main ruler 1. At this time, the utility model is in a storage state, which occupies little space and is convenient to carry. It can be stored in the pocket of a white coat and used at any time.

[0034] See also Figure 8 , loosen the adjustable bolt 1 4 and the adjustable bolt 2 5, the sub-scale 1 2 and the sub-scale 2 3 can be rotated at any angle with the knob screw as the axis. Figure 8 Because the mathematical principle used in the present invention is fixed, the results achieved by the general transformation form and the second transformation form are the same. Therefore, whether the surgery involves the left or right side of the brain, the ruler can be used, and the operator can choose one according to personal habits and preferences.

[0035] Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments, and are preferred specific implementation methods of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Claims

1. A portable composite ruler for displaying the baseline of axial scanning of cranial images, characterized in that: The invention comprises a main ruler (1), a secondary ruler (2), a secondary ruler (3), an adjustable bolt (4), an adjustable bolt (5) and a hollow sliding track (6); the main ruler (1) is connected and fixed to the secondary ruler (2) at the upper end through the adjustable bolt (4); the main ruler (1) is connected and fixed to the secondary ruler (3) through the adjustable bolt (5); the main ruler (1) is provided with a hollow sliding track (6), and the secondary ruler (3) can adjust its position with the help of the hollow sliding track (6).

2. The portable cranial imaging axial scanning baseline display composite ruler according to claim 1 is characterized by: The adjustable bolt 1 (4) and the adjustable bolt 2 (5) are completely identical in size, structure and function; the adjustable bolt 1 (4) is composed of a knob screw 1 (41) and a nut 1 (42); the adjustable bolt 2 (5) is composed of a knob screw 2 (51) and a nut 2 (52); the knob screw 1 (41) and the nut 1 (42) are used in pairs and can be loosened or tightened to adjust the pressure between the auxiliary ruler 1 (2) and the main ruler (1); the knob screw 2 (51) and the nut 2 (52) are used in pairs and can be loosened or tightened to adjust the pressure between the auxiliary ruler 2 (3) and the main ruler (1).

3. The portable cranial imaging axial scanning baseline display composite ruler according to claim 1 is characterized by: The front of the main ruler (1) is marked with a scale with a minimum unit of 1 mm, and the vertical intersection point of the main ruler (1) and the auxiliary ruler (2) is the zero scale starting point of the main ruler (1).

4. The portable cranial imaging axial scanning baseline display composite ruler according to claim 1 is characterized by: The front of the secondary ruler 1 (2) is marked with a scale with the minimum unit of 1 mm, and the point where the secondary ruler 1 (2) and the main ruler (1) intersect vertically is the starting point of the zero scale of the secondary ruler 1 (2).

5. The portable cranial imaging axial scanning baseline display composite ruler according to claim 1 is characterized by: The main ruler (1), the auxiliary ruler one (2) and the auxiliary ruler two (3) have the same width, and the auxiliary ruler one (2) and the auxiliary ruler two (3) are both located on the back of the main ruler (1); when in use, the auxiliary ruler one (2) and the auxiliary ruler two (3) are both perpendicular to the main ruler (1); when stored, the auxiliary ruler one (2) and the auxiliary ruler two (3) overlap front and back on the back of the main ruler (1); the auxiliary ruler one (2) and the auxiliary ruler two (3) have a thickness of 0.5 mm to 1 mm, and are the same thickness, and the thickness of the main ruler (1) is 2 mm.

6. The portable cranial imaging axial scanning baseline display composite ruler according to claim 1 is characterized by: The main ruler (1) is provided with a hollow sliding track (6), and the hollow sliding track (6) allows the auxiliary ruler (2) (3) to adjust its position by sliding on the main ruler (1) and set the vertical distance between the auxiliary ruler (2) and the first auxiliary ruler (2).

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