A portable scalp positioner for craniocerebral surgery

Abstract

The utility model relates to a portable scalp positioner for craniocerebral operation, the front ruler, the back ruler, the front side ruler, the back side ruler, the vertical ruler and the middle line flexible ruler are used as the measuring scale, the front and back side ruler joint, the front side ruler joint, the front side ruler joint handle, the back side ruler joint, the back side ruler joint handle, the vertical side ruler joint, the middle front ruler joint and the middle back ruler joint are used as the movable joint and handle to realize each measuring scale sliding or rotating, can carry out structural adjustment according to the different size of craniocerebral and realize portable storage function. Through the front ruler, the back ruler, the front side ruler and the back side ruler, the eyebrow arch and the occipital outer protuberance plane of the skull are limited, at the same time, the vertical ruler is perpendicular to the plane to obtain 3 -dimensional coordinates and the middle line flexible ruler obtains the arc coordinates of the brain, can improve the measurement accuracy in multidimension, in addition, each joint and handle have high flexibility, convenient operation, and can realize portable storage through rotation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a portable scalp locator for craniocerebral surgery. Background Technology

[0002] Cranial surgery is a common neurosurgical procedure that involves making an incision in the scalp and using mechanical equipment to open the skull to perform surgical treatment. The brain's structure is complex, and the location of diseases varies. Accurately locating the lesion is crucial for surgical success. Positioning the lesion allows for determining the appropriate size of the scalp incision and the extent of skull opening, avoiding unnecessarily enlarging the incision, thus reducing surgical time and minimizing additional trauma.

[0003] Currently, in neurosurgery, before craniocerebral surgery, surgeons use preoperative CT or MRI scans to determine the area of ​​the lesion on a graphical model. Then, they use anatomical landmarks, neuronavigation systems, and stereotactic techniques to pinpoint the lesion's location on the patient's skull. While approximate estimation on the scalp based on anatomical location relies on the surgeon's experience and is quick, localization errors are difficult to control. Neuronavigation systems offer accurate localization with minimal error, but are expensive, complex, and time-consuming, requiring repeated preoperative registration to ensure accuracy. Stereotactic techniques require a specific frame and offer accurate localization, but require scalp fixation before a second CT scan and secondary calculations of the image data to determine the exact location, which is time-consuming and has low patient tolerance. Existing scalp locators suffer from limitations: simple structures lacking multi-dimensional measurement capabilities, complex structures making them difficult to carry, or electronic components hindering sterilization. Summary of the Invention

[0004] This invention provides a portable scalp locator for craniocerebral surgery, featuring a three-dimensional movable measuring scale and a flexible scale to address the problems mentioned in the background art. This invention is convenient to use, simple to operate, provides multi-dimensional measurement with minimal error, and is foldable for easy portability. To achieve the above objectives, this invention provides the following technical solution: A scalp locator for craniocerebral surgery, comprising an anterior scale, a posterior scale, an anterior lateral scale, a posterior lateral scale, an anterior and posterior lateral ulnar joints, a vertical scale, a midline flexible scale, an anterior lateral ulnar joint, an anterior lateral ulnar joint handle, a posterior lateral ulnar joint handle, a vertical lateral ulnar joint, a mid-anterior ulnar joint, and a mid-posterior ulnar joint;

[0005] The front ruler, back ruler, front side ruler, back side ruler, vertical ruler, and center line flexible ruler all have double-sided graduation markings.

[0006] The front ruler, back ruler, front side ruler, and back side ruler all have sliding grooves.

[0007] The so-called centerline flexible ruler is a flexible metal ruler that can be bent and deformed;

[0008] The anterior and posterior ulna are connected by the anterior and posterior ulna joints, respectively, and can slide on the anterior and posterior ulna.

[0009] The anterior and posterior ulna are rotated 90 degrees via the anterior and posterior ulna joint handles, respectively.

[0010] The anterior and posterior ulna are folded together via the anterior and posterior ulna joints.

[0011] The vertical ruler is fixed to the posterior ruler by the vertical lateral ulnar joint and can rotate 180 degrees through the joint.

[0012] The anterior end of the midline flexible ulna is connected to the anterior ulna via the mid-anterior ulna joint, and the posterior end is connected to the posterior ulna via the mid-posterior ulna joint.

[0013] The anterior and posterior ulnar joints have grooves and strong magnets at their tops for fixing the midline flexible ulna.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: Because this utility model has sliding front and rear rulers, this design facilitates adjustment according to head size. Because this utility model has a front ruler, rear ruler, front side ruler, rear side ruler, and vertical ruler, this design facilitates 3D positioning. Because this utility model has a movable midline flexible ruler, this design facilitates determining the midline of the head and allows for sliding adjustment according to head size, with length adjusted via the mid-rear ruler joint. Because this utility model has multiple scales and multiple movable connectors, it features high measurement accuracy, multi-dimensional measurement, high flexibility, convenient operation, and foldable portability. Because this utility model has no electronic components and is entirely constructed of metal, it is easy to sterilize and has low manufacturing costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing the unfolded structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the folding structure of this utility model;

[0017] Figure 3 This is a schematic diagram showing the unfolded structure of this utility model;

[0018] In the attached diagram, the following are the reference numerals: 1. Anterior ulna; 4. Posterior ulna; 21. Anterior lateral ulna; 22. Posterior lateral ulna; 8. Anterior and posterior lateral ulnar joints; 3. Vertical ulna; 5. Midline flexible ulna; 12. Anterior lateral ulnar joint; 6. Anterior lateral ulnar joint handle; 42. Posterior ulnar joint; 7. Posterior ulnar joint handle; 32. Vertical lateral ulnar joint; 15. Middle anterior ulnar joint; 45. Middle posterior ulnar joint. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-2 This utility model provides a technical solution: a portable scalp locator for craniocerebral surgery, comprising anterior ruler 1, posterior ruler 4, anterior lateral ruler 21, posterior lateral ruler 22, anterior and posterior lateral lateral ulnar joints 8, a vertical ruler 3, a midline flexible ruler 5, anterior lateral ulnar joint 12, anterior lateral ulnar joint handle 6, posterior lateral ulnar joint 42, posterior lateral ulnar joint handle 7, vertical lateral ulnar joint 32, mid-anterior ulnar joint 15, and mid-posterior ulnar joint 45. Anterior ruler 1, posterior ruler 4, anterior lateral ruler 21, and posterior lateral ruler 22 are all rigid rulers, while the midline flexible ruler 5 is a flexible metal ruler. Anterior ruler 1 and posterior ruler 4 are connected and slide with anterior lateral ulnar joint 12 and posterior lateral ulnar joint 42, respectively, and can rotate 90 degrees via anterior lateral ulnar joint handle 6 and posterior ulnar joint handle 7. At 90 degrees, anterior ruler 1 and posterior ruler 4 are extended, and when rotated to 0 degrees, they can be retracted to anterior lateral ruler 21 and posterior lateral ruler 22, respectively. The vertical ruler 3 is connected to the rear ruler 22 via the vertical side ruler joint 31 and can rotate 180 degrees. Vertical rotation (0 degrees and 180 degrees) allows for vertical movement, and rotation (90 degrees) retracts it to the outer side of the rear ruler 4. The front ruler 21 and rear ruler 22 are folded together via the front and rear side ruler joints 8. The central flexible ruler 5 moves by sliding on the front ruler 1 and rear ruler 4 via the central front ruler joint 15 and central rear ruler joint 45, respectively. Its length is adjusted via slots and strong magnets on the central front ruler joint 15 and central rear ruler joint 45.

[0021] Example 1

[0022] In operation, the present invention is as follows: First, the operator takes out the folded scalp positioning ruler. Then, the front ruler 21 and the rear ruler 22 are unfolded sequentially using the front and rear ulnar joints 8. Next, the front ruler 1 and the rear ruler 4 are unfolded by rotating the front ulnar joint handle 6 and the rear ulnar joint handle 7 to 90 degrees respectively. The front ruler 1 is placed at the brow ridge of the skull, with the front ruler 21 and the rear ruler 22 pressed against the temporal region of the skull. The rear ruler 4 is placed at the external occipital protuberance of the skull and unfolded using the front and rear ulnar joint handles 6 and 7 respectively. 7. Tighten the anterior ulnar joint 12 and the posterior ulnar joint 42 to fix them in the groove, so that the anterior ulnar 1, posterior ulnar 4, anterior ulnar 21 and posterior ulnar 22 are tightly attached to the scalp and are located on the plane of the brow ridge and external occipital protuberance of the skull. The vertical ulnar 3 is kept on the outside of the posterior ulnar joint and does not stick to the scalp. By rotating the vertical ulnar joint 32 by 0 degrees or 180 degrees, it is directed to the top of the head. The midline flexible ulnar 5 is placed in an arc shape at the brow ridge and external occipital protuberance of the skull by sliding the anterior ulnar joint 15 and the posterior ulnar joint 45, and is positioned at the midline of the brain. Preoperative CT or MRI images are used to obtain lesion location data. The distance of the lesion from the midline of the brain can be located using the anterior ruler 1 and posterior ruler 4, and marked with a marker. The distances of the anterior end, midpoint, and posterior end of the lesion from the anterior ruler 1 and posterior ruler 4 can be located using the anterior ruler 21 and posterior ruler 22, and marked with a marker. The distances of the upper end, midpoint, and lower end of the lesion from the brow ridge and external occipital protuberance of the skull can be located using the vertical ruler 3, and marked with a marker. The location of the lesion can be roughly determined by drawing an arc-shaped line by sliding the midline flexible ruler 5 through the aforementioned markings on the scalp. After localization, the midline flexible ruler 5 is released by the anterior-middle ulnar joint 15 and the posterior-middle ulnar joint 45. Then, the vertical ulnar joint 32 is rotated to 90 degrees, the anterior ulnar joint 12 and the posterior ulnar joint 42 are slid to the top of the anterior ulnar joint 21 and the posterior ulnar joint 22, respectively. The anterior ulnar joint handle 6 and the posterior ulnar joint handle 7 are rotated to 0 degrees, and the anterior and posterior ulnar joints 8 are folded in half to achieve storage.

[0023] Example 2

[0024] In operation, this utility model unfolds as described in Example 1, with the scalp positioning ruler in its folded state. Common ventricular puncture points in craniocerebral surgery can be located by adding the horizontal distance from the brow ridge and external occipital protuberance to the midline. The operator places the anterior ruler 1 at the brow ridge, the anterior ruler 21 and posterior ruler 22 against the temporal region, and the posterior ruler 4 at the external occipital protuberance. The anterior ulnar joint handle 6 and the posterior ulnar joint handle 7 are tightened to fix the anterior ulnar joint 12 and the posterior ulnar joint 42 in the groove, ensuring that the anterior ruler 1, posterior ruler 4, anterior ruler 21, and posterior ruler 22 are tightly against the scalp and positioned on the plane of the brow ridge and external occipital protuberance. The midline flexible ruler 5 is positioned at the brow ridge and external occipital protuberance by sliding the anterior ulnar joint 15 and the posterior ulnar joint 45 in an arc shape, thus locating the midline of the brain. The distance from the midline of the brain is located by using the anterior ruler 1 and the posterior ruler 4, and the arc-shaped distance from the glabella or external occipital protuberance is located by using the midline flexible ruler 5. The location of the ventricular puncture point can then be determined. After the location is determined, the brain is stored according to Example 1.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A portable scalp locator for craniocerebral surgery, comprising anterior ulna (1), posterior ulna (4), anterior lateral ulna (21), posterior lateral ulna (22), anterior and posterior lateral ulnar joints (8), vertical ulna (3), midline flexible ulna (5), anterior lateral ulnar joint (12), anterior lateral ulnar joint handle (6), posterior lateral ulnar joint (42), posterior lateral ulnar joint handle (7), vertical lateral ulnar joint (32), mid-anterior ulnar joint (15), and mid-posterior ulnar joint (45), characterized in that: The anterior ulna (1) is connected to the anterior ulna (21) via the anterior ulna joint (12), the posterior ulna (4) is connected to the posterior ulna (22) via the posterior ulna joint (42), the vertical ulna (3) is connected to the posterior ulna (22) via the vertical ulna joint (32), the front end of the midline flexible ulna (5) is connected to the anterior ulna (1) via the mid-anterior ulna joint (15), and the rear end of the midline flexible ulna (5) is connected to the posterior ulna (4) via the mid-posterior ulna joint (45).

2. The portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: Both the anterior ulna (21) and posterior ulna (22) have grooves to facilitate the sliding of the anterior ulnar joint (12) and the posterior ulnar joint (42), respectively.

3. The portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: The anterior ulna (21) and posterior ulna (22) can be connected by the anterior and posterior ulna joints (8) and can be folded and rotated.

4. The portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: The anterior ulna (1) and posterior ulna (4) can rotate 90 degrees through the anterior ulnar joint handle (6) and the posterior ulnar joint handle (7), respectively.

5. A portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: The vertical ruler (3) is fixed to the rear ruler (22) through the vertical lateral ulnar joint (32) and can rotate 180 degrees.

6. A portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: The anterior ulna (1) and posterior ulna (4) have grooves to facilitate the sliding of the anterior ulna joint (15) and the posterior ulna joint (45), respectively.

7. A portable scalp locator for craniocerebral surgery according to claim 1, characterized in that: The top of both the anterior and posterior ulnar joints (15) and the posterior ulnar joint (45) have grooves and strong magnets for fixing the midline flexible ulna (5).

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