Pathological skull fixing and craniotomy device for forensic doctor

Abstract

The utility model discloses a forensic pathological skull fixing and craniotomy device which is characterized in that two convex seats are mounted on two sides of the rear end of a base, arc-shaped hinges are hinged on the convex seats, at least one screwing and clamping unit is arranged on the arc-shaped hinges, and a cutting machine used for cutting can be handheld or swing arm type. A limiting disc close to the cutting fluted disc is arranged on the rotating shaft of the cutting fluted disc, and the outer diameter of the limiting disc is smaller than that of the cutting fluted disc. The arc-shaped hinge, the screwing clamping unit and the arc-shaped plate are matched with one another, the head can be stably clamped, stability during cutting is guaranteed, a flexible cushion layer on the bottom face of the arc-shaped clamping plate prevents head soft tissue from being damaged, a limiting disc on the side of a cutting fluted disc can abut against the head when the cutting fluted disc reaches the cutting depth, the cutting fluted disc cannot cut into the head too deep, and the cutting efficiency is improved. In addition, the limiting discs of different sizes can be replaced according to different skull thicknesses. After the structures are mutually combined, the operation time is obviously shortened, the operation is convenient, and the cutting position is accurate.

Description

Technical Field

[0001] This utility model belongs to the technical field of improved skull fixation structure in forensic pathology, and in particular, a skull fixation craniotomy device for forensic pathology. Background Technology

[0002] In forensic pathology autopsies, craniotomies are frequently performed. During this procedure, one operator holds the skull still while another uses a handheld or swing-arm cutting machine to cut the skull. In practice, the following problems have been observed: 1. When the first operator manually holds the skull still, it is prone to shaking during the cutting process, leading to deviations in the cutting position and potentially causing cutting failure; 2. When the second operator uses a handheld or swing-arm cutting machine, if the cut depth is too shallow, brain tissue cannot be removed; if the cut depth is too deep, it can cause injury to the brain tissue; 3. The existing operating method is complex and inefficient. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a forensic pathology skull fixation craniotomy device.

[0004] The technical solution adopted by this utility model to solve the technical problem is:

[0005] A forensic pathology craniotomy fixation device is characterized by comprising a base, an arc-shaped hinge, and a cutting machine. A protrusion is provided on each of the two rear ends of the upper surface of the base. An openable and closable arc-shaped hinge is provided on each of the two protrusions. At least one screw-on clamping unit is provided on each arc-shaped hinge. An arc-shaped plate between the screw-on clamping unit and the two protrusions clamps the skull. The cutting machine is either handheld or swing-arm type, and a limiting disc for limiting the cutting depth of the cutting toothed disc is provided beside the cutting toothed disc of the cutting machine.

[0006] Furthermore: one end of the arc-shaped hinge is hinged to a protrusion on one side, and the other end of the arc-shaped hinge is detachably fixed to a protrusion on the other side by a snap-fit ​​unit.

[0007] Furthermore: the screw-on clamping unit includes a guide sleeve, a screw, and an arc-shaped clamping plate; the guide sleeve is embedded in the arc-shaped flap, the screw is screwed into the guide sleeve, and the lower end of the screw located below the arc-shaped flap is limited and installed with an arc-shaped clamping plate.

[0008] Furthermore: the screw is mounted on the lower end of the arc-shaped hinge, and the arc-shaped clamping plate is mounted on the lower end of the frame.

[0009] Furthermore, a flexible padding layer is provided on the bottom surface of the arc-shaped clamping plate.

[0010] Furthermore, the upper end of the screw is provided with a handle for rotating the screw.

[0011] Furthermore: the upper surface of the curved plate is concave, and its width from front to rear is less than the width of the protrusion from front to rear.

[0012] Furthermore, the cutting toothed disc of the cutting machine has a limiting disc with an outer diameter smaller than that of the cutting toothed disc.

[0013] The technical effects achieved by this utility model are:

[0014] In this invention, two protrusions are installed on both sides of the rear end of the base. Arc-shaped hinges are hinged onto these protrusions, and at least one screw-on clamping unit is provided on each arc-shaped hinge. The cutting machine used for cutting can be handheld or swing-arm type. A limiting plate with an outer diameter smaller than the cutting toothed disc is provided on the rotating shaft of the cutting toothed disc, close to the cutting toothed disc. The cooperation of the arc-shaped hinges, the screw-on clamping unit, and the arc-shaped plate can stably clamp the skull, ensuring stability during cutting. The flexible padding layer on the bottom surface of the arc-shaped clamping plate avoids damage to the soft tissues of the head. The limiting plate on the side of the cutting toothed disc can hold the skull against it when the cutting toothed disc reaches the cutting depth, preventing the cutting toothed disc from cutting too deeply and avoiding brain tissue damage. Furthermore, different sized limiting plates can be replaced according to different skull thicknesses. The combination of these structures significantly shortens the operation time, makes operation convenient, and ensures accurate cutting. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the usage state of this utility model.

[0016] Figure 2 for Figure 1 AA-direction cross-section diagram.

[0017] Figure 3 for Figure 1 A diagram showing the state of the curved fold when the page is open.

[0018] Figure 4 This is a diagram showing the position of the cutting machine. Detailed Implementation

[0019] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0020] A forensic pathology craniotomy fixation device, as shown in the figure, includes a base 11, an arc-shaped hinge 4, and a cutting machine 24. A protrusion 12 is provided on each of the two rear ends of the upper surface of the base. An arc-shaped hinge that can be opened and closed is provided on the two protrusions. At least one screw-on clamping unit is provided on the arc-shaped plate 10 between the screw-on clamping unit and the two protrusions, which can clamp the skull. The cutting machine is a handheld or swing-arm type. A limiting plate 22 for limiting the cutting depth of the cutting toothed disc 23 is provided on the side of the cutting machine.

[0021] One end of the curved hinge is hinged to a boss on one side via hinge 14, and the other end of the curved hinge is detachably fixed to a boss on the other side via a snap-fit ​​unit 15. One side of the hinge is fixed to the upper end of the outer surface of the boss, and the other side of the hinge is fixed to the outer side of the same end 13 of the curved hinge. The snap-fit ​​unit 15 is as follows: Figure 3 As shown, the device includes a wrench 17, a buckle 20, and a hook 16. The hook is installed on the upper part of the outer surface of the boss on the same side as the buckle. The end of the curved hinge is hinged to the wrench via a hinge pin 19. One end of the wrench next to the hinge pin rotates to insert the buckle, and the other end of the buckle is used to hook the hook after the curved hinge swings down into place. After the buckle hooks the hook, the handle can be further pressed down on the surface of the curved hinge. The opening on the wrench allows the protruding plate 18, which is aligned with the curved hinge, to pass through. The end of the protruding plate that passes through the wrench has an opening in which a pin or other structure that can hold the wrench can be inserted, thereby making the wrench, buckle, and hook more tightly connected and fixing the curved hinge to the boss.

[0022] The diagram shows three screw-on clamping units. The middle unit is located in the center of the curved hinge, with two roughly symmetrical screw-on clamping units on either side. Each screw-on clamping unit includes a guide sleeve 3, a screw 2, and a curved clamping plate 8. The guide sleeve is embedded in the through hole of the curved hinge and then welded in place. The internal thread of the guide sleeve engages with the external thread of the screw, allowing the screw to rotate upwards or downwards within the guide sleeve. The curved clamping plate is installed at the lower end of the screw, below the curved hinge. The specific installation structure of the curved clamping plate is as follows: the screw passes through a hole made at the upper end of a frame 5 at the lower end of the curved hinge. A nut 6 is welded to the lower end 7 of the screw within the frame, preventing the frame from falling off the screw. The inner diameter of the hole is larger than the outer diameter of the screw, thus allowing the frame to maintain its original position or rotate slightly when the screw rotates. The curved clamping plate is installed at the lower end of the frame.

[0023] To prevent damage to the soft tissues of the head during clamping, a flexible pad 9 is provided on the bottom surface of the curved clamping plate. The flexible pad can be made of materials such as rubber or silicone. The curvature of the curved clamping plate can conform as closely as possible to the shape of the human head, making clamping more stable, while the flexible pad can buffer and fill the gap when the curved clamping plate clamps, making it more adaptable to the surface of the head.

[0024] A handle 1 for rotating the screw is provided at the upper end of the screw. The upper surface of the arc plate is concave, and its width from the front end to the rear end is smaller than the width of the boss from the front end to the rear end.

[0025] The cutting machine can be handheld, with a cutting toothed disc having multiple serrations mounted on the motor output shaft 21 at the front of the handle; or it can be a swing-arm type, with a swingable, damped cantilever mounted on the base, and a cutting toothed disc having multiple serrations mounted on the motor output shaft at the swinging end of the cantilever. Regardless of the structure, a limiting disc is mounted on the end of the motor output shaft near the curved hinge and fixed by a fixing nut 25 mounted on the output shaft. The outer diameter of the limiting disc is smaller than the outer diameter of the cutting toothed disc. When the cutting toothed disc cuts to the required depth, the outer surface of the limiting disc will press against the surface of the skull, preventing the cutting toothed disc from cutting deeper, thus achieving the limiting function.

[0026] The process of using this utility model is as follows:

[0027] Turn the lever to separate the buckle from the hook, rotate the curved hinge upwards, place the head in the recess of the curved plate, then close the curved hinge and fasten the buckle.

[0028] Rotate the screws to make the arc-shaped clamping plate press against the surface of the skull, and adjust the three screws to clamp the skull.

[0029] The operator holds the cutting machine, places the cutting toothed disc in the appropriate position, and starts the motor. The motor rotates, causing the cutting toothed disc to rotate and cut. When the cutting depth is reached, the limiting disc presses against the surface of the skull.

[0030] After the cutting was completed, the operators took samples of the brain tissue.

[0031] After sampling is completed, open the buckle, remove the head and place it properly.

[0032] The samples were sent for testing.

[0033] When the above structures are combined, the operation time is significantly shortened, the operation is convenient, and the cutting position is accurate.

Claims

1. A forensic pathology craniotomy fixation device, characterized in that: The device includes a base, an arc-shaped hinge, and a cutting machine. A protrusion is provided on each of the two rear ends of the upper surface of the base. An openable and closable arc-shaped hinge is provided on each of the two protrusions. At least one screw-on clamping unit is provided on each arc-shaped plate between the screw-on clamping unit and the two protrusions to clamp the head. The cutting machine is either handheld or swing-arm type, and a limiting plate is provided beside the cutting toothed disc of the cutting machine to limit the cutting depth of the cutting toothed disc. The screw-on clamping unit includes a guide sleeve, a screw, and an arc-shaped clamping plate; the guide sleeve is embedded in the arc-shaped flap, the screw is screwed into the guide sleeve, and the lower end of the screw located below the arc-shaped flap is limited and installed with an arc-shaped clamping plate; The screw is mounted on the frame at the lower end of the arc-shaped hinge, and the arc-shaped clamping plate is mounted on the lower end of the frame; A flexible padding layer is provided on the bottom surface of the arc-shaped clamping plate.

2. The forensic pathology craniotomy fixation device according to claim 1, characterized in that: One end of the curved hinge is hinged to a protrusion on one side, and the other end of the curved hinge is detachably fixed to the protrusion on the other side by a snap-fit ​​unit.

3. The forensic pathology craniotomy fixation device according to claim 2, characterized in that: The upper end of the screw is provided with a handle for rotating the screw.

4. A forensic pathology craniotomy device for fixing skull fractures according to claim 1, 2, or 3, characterized in that: The upper surface of the curved plate is concave, and its width from front to rear is smaller than the width of the protrusion from front to rear.

5. A forensic pathology craniotomy device for fixing skull fractures according to claim 1, 2, or 3, characterized in that: The cutting machine has a limiting disc with an outer diameter smaller than that of the cutting tooth disc on its rotating shaft.

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