Head fixator for corpse dissection

By designing a head fixator that includes a fixing ring and a support rod, the movement of the skull during sawing in autopsy was solved, and the stable fixation of the skull and the accuracy of craniotomy examination was achieved.

CN222942606UActive Publication Date: 2025-06-06郝厚法
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Patent Information

Application Number
CN202421408126.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-19
Publication Date
2025-06-06
Estimated Expiration
2034-06-19

AI Technical Summary

Technical Problem

During the autopsy, the skull is prone to move when sawed, resulting in unfixed fixation, affecting the accuracy of the craniotomy test.

Method used

A head fixator including a first fixing ring and a second fixing ring is designed to lock the skull through the threaded transmission of the first support rod and the second support rod, and to adapt to the fixing needs of different skull sizes through the adjustment of the moving support frame and the connecting plate.

Benefits of technology

It effectively solves the problem of movement of the skull when sawing, ensures stable fixation of the skull, facilitates craniotomy examination, and improves the reliability and efficiency of the anatomy process.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a skull fixator for corpse dissection, which relates to the technical field of skull fixators and comprises a first fixing ring and a movable support frame, and a second fixing ring is arranged on one side of the first fixing ring. According to the head fixator for corpse dissection, firstly, scalp is cut open, the scalp and the forehead are turned forwards and backwards to the positions above the two eyebrows and then to a herringbone seam of the occipital part, then the first fixing ring and the second fixing ring are close to the turned scalp, and the first fixing ring is pulled to move according to the size of a skull until the first fixing ring is suitable for the skull in size; after adjustment is completed, a hand-screwed nut is rotated to be in threaded transmission with the first supporting rods, the first fixing ring and the second fixing ring can be tightly pressed when the hand-screwed nut moves, fixing of the first fixing ring and the second fixing ring is completed, and then two sets of first supporting rods and four sets of second supporting rods are rotated to fix the first fixing ring and the second fixing ring; the first fixing ring and the second fixing ring are in threaded transmission, the skull is locked, and craniotomy operation can be carried out at the moment.
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Description

Technical Field

[0001] The utility model relates to the technical field of skull fixators, in particular to a skull fixator for corpse dissection. Background Art

[0002] An autopsy is a medical procedure that examines and analyzes the body tissues and organs of a deceased individual to understand the cause of death and disease processes. It is an important medical practice that helps forensic doctors understand the cause of death and assist in solving crimes.

[0003] When a forensic doctor performs an autopsy on a body, it is sometimes necessary to perform a craniotomy. During the craniotomy, because the skull is slippery and has an arc-shaped shape, it is not convenient to fix it, and it is difficult for the forensic doctor to saw open the skull. Utility Model Content

[0004] The utility model aims to provide a skull fixator for autopsy, so as to solve the problem of easy movement when the skull is sawed open in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a head fixator for corpse dissection, comprising: a first fixing ring and a movable support frame,

[0006] A second fixing ring is provided on one side of the first fixing ring, and movable grooves are opened on both sides of the second fixing ring. The two sides of the second fixing ring are slidably connected with the first support rod through the movable grooves. The two sides of the first fixing ring are threadedly connected to the first support rod, the middle parts of the first fixing ring and the second fixing ring are threadedly connected to the second support rod, and the outer side of the first support rod is threadedly connected with a hand nut.

[0007] Preferably, one side of the hand-tightening nut is close to the second fixing ring, and the first fixing ring and the second fixing ring are both "C"-shaped.

[0008] Preferably, anti-slip grooves are provided at the handles on one side of the first support rod and the second support rod, and the first fixing ring and the second fixing ring are both made of stainless steel.

[0009] Preferably, a movable support frame is provided on one side of the first fixed ring, a limiting groove engaged with the first fixed ring is opened on one side of the movable support frame, a connecting plate is welded and fixed on the other side of the movable support frame, a sliding groove for sliding the sliding rod is opened inside the connecting plate, and movable plates are fixedly connected to both ends of the sliding rod.

[0010] Preferably, a movable groove for sliding the movable support frame and the connecting plate is provided inside the movable plate, and a first threaded rod is movably connected inside the movable plate via a bearing, and the outer side of the first threaded rod is threadedly connected to the middle part of the connecting plate.

[0011] Preferably, one side of the movable plate is fixedly connected to a fixed support frame, the side of the movable plate away from the movable support frame is movably connected to a bed board via a rotating shaft, the side of the movable plate away from the fixed support frame is movably connected to a connecting rod via a rotating shaft, one side of the connecting rod is movably connected to a threaded block via a rotating shaft, and one side of the fixed support frame is provided with an arc groove that engages with a second fixed ring.

[0012] Preferably, the internal thread of the threaded block is connected to a second threaded rod, one end of the second threaded rod is slidably connected to the bed board via a bearing, and a sliding groove for the threaded block to slide is provided inside the bed board.

[0013] Compared with the prior art, the beneficial effects of the head fixator for autopsy are as follows: during head dissection, the scalp is first incised, and then the scalp is turned forward and backward, from the forehead to above the eyebrows, and then to the lambdoid suture of the occipital part, and then the first fixing ring and the second fixing ring are brought close to the turned scalp, and according to the size of the skull, the first fixing ring is pulled to move until it is suitable for the size of the skull, and then the two groups of first support rods and the four groups of second support rods are rotated so that the two and the first fixing ring and the second fixing ring are threadedly driven to lock the skull, and then a craniotomy operation can be performed, by placing the body of the autopsy subject on the bed board and the head on the movable board, and then the first fixing ring is clamped with the limiting grooves in the two groups of movable support frames, and the second fixing ring is clamped with the arc grooves in the two groups of fixed support frames, to complete the connection between the head fixator and the movable board, and by rotating the first threaded rod and the connecting plate for threaded transmission, the connecting plate and the support frame can be driven to move to adapt to the position adjusted by the first fixing ring.

[0014] 1. When a forensic doctor performs an autopsy on a corpse, it is sometimes necessary to perform a craniotomy for inspection. When performing a craniotomy, in order to fix the skull, the scalp is first incised, and the scalp is turned forward and backward, from the forehead to above the eyebrows, and then to the lambdoid suture of the occipital part. Then the first fixing ring and the second fixing ring are brought close to the turned scalp. According to the size of the skull, the first fixing ring is pulled to move until it is suitable for the size of the skull. After the adjustment is completed, the hand-tightening nut is rotated to perform threaded transmission with the first support rod. When the hand-tightening nut moves, the first fixing ring and the second fixing ring are pressed tightly to complete the fixation of the first fixing ring and the second fixing ring. Then the two groups of first support rods and the four groups of second support rods are rotated so that the two groups are threadedly transmitted with the first fixing ring and the second fixing ring to lock the skull. At this time, the craniotomy operation can be performed. In this way, the above operation can facilitate the fixation of the skull and facilitate the craniotomy inspection.

[0015] 2. When fixing the first fixing ring and the second fixing ring, the body of the autopsy subject is placed on the bed board and the head is placed on the movable board, and then the first fixing ring is clamped with the limiting grooves in the two sets of movable support frames, and the second fixing ring is clamped with the arc grooves in the two sets of fixed support frames to complete the connection between the head fixator and the movable board. By rotating the first threaded rod and the connecting plate for threaded transmission, the connecting plate can be driven to move, the sliding rod can limit the connecting plate, and the connecting plate can drive the movable support frame to move to adapt to the adjusted position of the first fixing ring. In this way, the above operations can facilitate the connection between the head fixator and the bed board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a main schematic diagram of the utility model;

[0017] Figure 2 It is a right side view schematic diagram of the utility model;

[0018] Figure 3 This is a right side cross-sectional schematic diagram of the practical movable plate;

[0019] Figure 4 This is a right side view of the practical bed board;

[0020] Figure 5 This is a top view cross-sectional schematic diagram of the movable plate of the utility model;

[0021] Figure 6 It is a schematic diagram of the main view of the movable plate of the utility model.

[0022] In the figure: 1. first fixing ring; 2. second fixing ring; 3. movable groove; 4. first support rod; 5. second support rod; 6. hand-tightening nut; 7. movable support frame; 8. connecting plate; 9. sliding rod; 10. movable plate; 11. first threaded rod; 12. fixed support frame; 13. connecting rod; 14. threaded block; 15. second threaded rod; 16. bed board. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0024] See also Figure 1-Figure 3 The utility model provides a technical solution: a skull fixator for corpse dissection, comprising: a first fixing ring 1 and a movable support frame 7,

[0025] A second fixing ring 2 is provided on one side of the first fixing ring 1, and movable grooves 3 are provided on both sides of the second fixing ring 2. First support rods 4 are slidably connected to both sides of the second fixing ring 2 through the movable grooves 3. Both sides of the first fixing ring 1 are threadedly connected to the first support rod 4, and the middle parts of the first fixing ring 1 and the second fixing ring 2 are threadedly connected to the second support rod 5, and the outer side of the first support rod 4 is threadedly connected to a hand nut 6; one side of the hand nut 6 is close to the second fixing ring 2, and the shapes of the first fixing ring 1 and the second fixing ring 2 are both "C"-shaped; anti-slip grooves are provided at the handles on one side of the first support rod 4 and the second support rod 5, and the materials of the first fixing ring 1 and the second fixing ring 2 are both stainless steel. The hand nut 6 and the first support rod 4 constitute a threaded transmission structure, and the first support rod 4, the second fixing ring 2 and the movable groove 3 constitute a sliding structure.

[0026] During specific implementation, when a forensic doctor performs an autopsy on a corpse, it is sometimes necessary to perform a craniotomy. During the craniotomy, in order to fix the skull, the scalp is first incised, and the scalp is turned forward and backward, from the forehead to above the two eyebrows, and then to the lambdoid suture of the occipital part. Then, the first fixing ring 1 and the second fixing ring 2 are brought close to the turned-over scalp. According to the size of the skull, the first fixing ring 1 is pulled to move, so that the spacing between the first fixing ring 1 and the second fixing ring 2 is changed until it is suitable for the size of the skull. After the adjustment is completed, the hand-tightening nut 6 is rotated to perform threaded transmission with the first support rod 4. When the hand-tightening nut 6 moves, the first fixing ring 1 and the second fixing ring 2 are pressed tightly to complete the fixation of the first fixing ring 1 and the second fixing ring 2. Then, the two groups of first support rods 4 and the four groups of second support rods 5 are rotated so that the two groups are threadedly transmitted with the first fixing ring 1 and the second fixing ring 2, so that the cone heads at one end of the first support rod 4 and the second support rod 5 are in contact with the skull to lock the skull.

[0027] At this time, the operation can be performed along the 1 cm position of the fixator, and the skull can be sawed open around the periphery. It is not easy for a straight saw to make the sawing cut wrong. The use of the fixator is convenient, reliable, stable, time-saving and labor-saving, especially when dissecting the skull in winter, the six support handles can be moved in any direction to accurately saw the skull for convenient observation of the brain substance and the condition of skull injury. After use, the fixator can be cleaned with clean water. After cleaning, the hand nut 6 can be turned to create a gap between the first fixing ring 1 and the second fixing ring 2, and then the first fixing ring 1 and the second fixing ring 2 are rotated to fold and store, and the hand nut 6 is turned. In this way, the skull can be fixed conveniently through the above operation, and craniotomy inspection is convenient.

[0028] See also Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6A movable support frame 7 is provided on one side of the first fixed ring 1, and a limiting groove engaged with the first fixed ring 1 is opened on one side of the movable support frame 7, and a connecting plate 8 is welded and fixed on the other side of the movable support frame 7, and a sliding groove for sliding the slide rod 9 is opened inside the connecting plate 8, and both ends of the slide rod 9 are fixedly connected with a movable plate 10; a movable groove for sliding the movable support frame 7 and the connecting plate 8 is opened inside the movable plate 10, and a first threaded rod 11 is movably connected to the inside of the movable plate 10 through a bearing, and the outer side of the first threaded rod 11 is threadedly connected to the middle part of the connecting plate 8; a fixed support frame 12 is fixedly connected to one side of the movable plate 10, and the movable plate 10 is away from the movable plate 10. One side of the movable support frame 7 is movably connected to a bed board 16 via a rotating shaft, and the side of the movable board 10 away from the fixed support frame 12 is movably connected to a connecting rod 13 via a rotating shaft, and one side of the connecting rod 13 is movably connected to a threaded block 14 via a rotating shaft, and one side of the fixed support frame 12 is provided with an arc groove that engages with the second fixed ring 2; the internal thread of the threaded block 14 is connected to the second threaded rod 15, and one end of the second threaded rod 15 is slidably connected to the bed board 16 via a bearing, and a sliding groove for the threaded block 14 to slide is provided inside the bed board 16, and the connecting rod 13 forms a rotating structure with the threaded block 14 through the rotating shaft, and the threaded block 14 and the second threaded rod 15 form a threaded transmission structure.

[0029] In the specific implementation, when fixing the first fixing ring 1 and the second fixing ring 2, the body of the autopsy subject is placed on the bed board 16, the head is placed on the movable board 10, and then the first fixing ring 1 is clamped with the limiting grooves in the two groups of movable support frames 7, and the second fixing ring 2 is clamped with the arc grooves in the two groups of fixed support frames 12 to complete the connection between the head fixer and the movable board 10. By rotating the first threaded rod 11 and the connecting plate 8 for threaded transmission, the connecting plate 8 can be driven to move, and the sliding rod 9 can limit the connecting plate 8. The connecting plate 8 can drive the movable support frame 7 to move to adapt to the adjusted position of the first fixing ring 1. When the angle of the movable plate 10 needs to be adjusted, the second threaded rod 15 and the threaded block 14 are rotated for threaded transmission. The threaded block 14 can drive the connecting rod 13 to rotate, thereby driving the movable plate 10 to rotate. The movable plate 10 can also drive the angle of the head fixator to change, thereby improving the applicability of the device. In this way, through the above operation, the head fixator can be easily connected to the bed board 16, and the fixing angle can be adjusted to improve adaptability.

[0030] To sum up: when using the head fixator for cadaver dissection, first adjust the distance between the first fixing ring 1 and the second fixing ring 2 to adapt to skulls of different sizes, and then fix the skull through multiple groups of first support rods 4 and second support rods 5. This is the characteristic of the head fixator for cadaver dissection. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0031] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A skull fixator for autopsy, comprising: The first fixed ring (1) and the movable support frame (7) are characterized by: A second fixing ring (2) is arranged on one side of the first fixing ring (1), movable grooves (3) are provided on both sides of the second fixing ring (2), and first support rods (4) are slidably connected to both sides of the second fixing ring (2) through the movable grooves (3), and both sides of the first fixing ring (1) are threadedly connected to the first support rod (4), and the middle parts of the first fixing ring (1) and the second fixing ring (2) are threadedly connected to the second support rod (5), and the outer side of the first support rod (4) is threadedly connected to a hand nut (6).

2. The head fixator for autopsy according to claim 1, characterized in that: One side of the hand-tightened nut (6) is close to the second fixing ring (2), and the first fixing ring (1) and the second fixing ring (2) are both "C"-shaped in appearance.

3. The head fixator for autopsy according to claim 2, characterized in that: The handles on one side of the first support rod (4) and the second support rod (5) are both provided with anti-slip grooves, and the first fixing ring (1) and the second fixing ring (2) are both made of stainless steel.

4. The head fixator for autopsy according to claim 1, characterized in that: A movable support frame (7) is arranged on one side of the first fixed ring (1), a limiting groove engaging with the first fixed ring (1) is provided on one side of the movable support frame (7), a connecting plate (8) is welded and fixed on the other side of the movable support frame (7), a sliding groove for a sliding rod (9) to slide is provided inside the connecting plate (8), and movable plates (10) are fixedly connected to both ends of the sliding rod (9).

5. The head fixator for autopsy according to claim 4, characterized in that: The movable plate (10) is provided with a movable groove for sliding the movable support frame (7) and the connecting plate (8). The movable plate (10) is movably connected to a first threaded rod (11) via a bearing. The outer side of the first threaded rod (11) is threadedly connected to the middle part of the connecting plate (8).

6. The head fixator for autopsy according to claim 5, characterized in that: One side of the movable plate (10) is fixedly connected to a fixed support frame (12); the side of the movable plate (10) away from the mobile support frame (7) is movably connected to a bed board (16) via a rotating shaft; the side of the movable plate (10) away from the fixed support frame (12) is movably connected to a connecting rod (13) via a rotating shaft; one side of the connecting rod (13) is movably connected to a threaded block (14) via a rotating shaft; and one side of the fixed support frame (12) is provided with an arc groove that engages with a second fixed ring (2).

7. The head fixator for autopsy according to claim 6, characterized in that: The internal thread of the threaded block (14) is connected to a second threaded rod (15), one end of the second threaded rod (15) is slidably connected to a bed plate (16) via a bearing, and a sliding groove for the threaded block (14) to slide is provided inside the bed plate (16).