Modeling tool for animal skull defect model

Abstract

The invention discloses an animal skull defect model modeling tool, and belongs to the technical field of medical instruments. The modeling tool comprises a bottom plate and a head fixing device arranged on the bottom plate, the head fixing device comprises a positioning cover, a positioning mold and at least two positioning mechanisms, on one hand, the positioning mold is detachably fixed in a groove of the positioning cover so that the positioning mold can be matched with the head of an experimental object, and meanwhile, the positioning cover is detachably fixed to the positioning mold; on the one hand, the second polishing hole is communicated with the first polishing hole to form a T-shaped hole serving as an operation channel of the skull drill, and on the other hand, the positioning cover is arranged on the bottom plate through the positioning mechanism in an adjustable lifting mode. After the two designs are combined, the modeling tool can quickly press the head of an experimental object on the bottom plate, manual operation and subsequent drilling operation are easy, the positioning effect is good, the accuracy and stability of drilling operation are improved, the positioning mold can be replaced according to the experimental object, and the application range is wider.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a modeling tool for an animal skull defect model. Background Art

[0002] Skull drilling is a common and important technique in animal experiments and medical operations, especially in orthopedics, brain surgery research and surgery. Existing skull drilling devices often lack sufficient stability, which can easily lead to animal movement during the drilling process. This instability not only increases the difficulty of operation, but also may cause the drilling position to shift, thereby affecting the accuracy and reliability of subsequent experiments. In addition, current drilling devices often lack adjustability and cannot adapt to the needs of different animal species and body sizes. This limits its flexibility in a wide range of applications and increases the complexity and technical requirements of operation. Summary of the invention

[0003] The purpose of the present invention is to provide an animal skull defect modeling tool in response to the existing technical status. The modeling tool can quickly press the head of the experimental object against the base plate, is easy to operate, and then carry out the drilling operation. It not only has a good positioning effect and improves the accuracy and stability of the drilling operation, but also the positioning mold can be replaced according to the experimental object, and has a wider range of applications.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] A modeling tool for an animal skull defect model, comprising a base plate and a head fixer arranged on the base plate, wherein the head fixer comprises a positioning cover, a positioning mold and at least two positioning mechanisms;

[0006] The positioning cover is a slot structure without a rear side wall, a first grinding hole penetrating the upper side wall of the positioning cover is provided in the upper side wall thereof in a vertical direction, a guide hole penetrating the side wall thereof in a vertical direction is provided in the side wall thereof, and the number of the guide holes is consistent with the number of the positioning mechanisms;

[0007] The positioning mold is an L-shaped plate structure, the lower side of the upper side wall and the rear side of the front side wall of the positioning mold are adapted to the head of the experimental object, the upper side wall of the positioning mold is provided with a second polished hole penetrating the upper side wall in a vertical direction, the positioning mold is detachably fixed in the groove of the positioning cover, and the second polished hole is connected to the first polished hole to form a T-shaped hole;

[0008] The positioning mechanism includes a guide column, a spring and an adjusting nut. The guide column is fixed on the base plate. The spring and the adjusting nut are sequentially inserted into the guide column from bottom to top, and the adjusting nut is threadedly connected to the guide column. The guide holes provided on the positioning cover are inserted into the guide columns of each positioning mechanism one by one. The positioning cover is located between the adjusting nut and the spring with its groove facing downward, and the spring is in a compressed state.

[0009] Furthermore, it also includes a plurality of pads with different thicknesses, and the pads cannot pass through the T-shaped hole formed by the second grinding hole and the first grinding hole, and a through hole is provided at the center of the pad.

[0010] Furthermore, a slot is provided between the circumference of the pad and the through hole at the center thereof, and the width of the slot is adapted to the drill rod of the skull drill.

[0011] Furthermore, a hanger is provided on the front side of the front side wall of the positioning cover, a hook is provided on the hanger, a first operating hole is provided on the front side wall of the positioning cover, a second operating hole is provided on the front side wall of the positioning mold, and the first operating hole is connected to the second operating hole.

[0012] Furthermore, the hanger is provided with at least two hooks, and the hooks are arranged on the hanger along the vertical direction.

[0013] Furthermore, the positioning mold is provided with a water injection channel extending from the rear side of the upper side wall thereof to the second polishing hole.

[0014] Furthermore, the upper side wall of the positioning cover is provided with a first mounting hole that penetrates it in a vertical direction, and the first mounting hole is a smooth hole. The upper side wall of the positioning mold is provided with a second mounting hole that penetrates it in a vertical direction corresponding to the first mounting hole provided on the positioning cover, and the second mounting hole is a threaded hole, and also includes a fastening bolt that penetrates the first mounting hole and is threadedly connected to the second mounting hole.

[0015] Furthermore, the rear side of the base plate exceeds the head positioner by at least 10 cm.

[0016] Furthermore, a deformation cushion layer is provided on the lower side of the upper side wall and the rear side of the front side wall of the positioning mold.

[0017] Furthermore, the lower side of the bottom plate is provided with anti-slip protrusions.

[0018] The beneficial effects of the present invention are:

[0019] The present invention provides a modeling tool for an animal skull defect model. On the one hand, the positioning mold can be detachably fixed in the groove of the positioning cover, so that the positioning mold can be adapted to the heads of different types of experimental subjects. At the same time, the second grinding hole is connected to the first grinding hole to form a T-shaped hole as an operating channel for the skull drill. On the other hand, the positioning cover is set on the bottom plate in an adjustable lifting manner through a positioning mechanism. After combining the above two designs, the modeling tool can quickly press the head of the experimental subject on the bottom plate, which is easy to operate, and then carry out the drilling operation. Not only is the positioning effect good, the accuracy and stability of the drilling operation are improved, and the positioning mold can be replaced according to the experimental subject, and the scope of application is wider. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a tool for building a skull defect model for an animal according to the present invention;

[0021] Figure 2 It is a structural schematic diagram of a modeling tool for an animal skull defect model of the present invention (without a positioning mold);

[0022] Figure 3 It is a structural schematic diagram of a positioning cover in a modeling tool for an animal skull defect model of the present invention;

[0023] Figure 4 It is a structural schematic diagram of a positioning mold in a modeling tool for an animal skull defect model of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a backing plate in a modeling tool for an animal skull defect model of the present invention;

[0025] Figure 6 The present invention is a schematic structural diagram of pads of different thicknesses in a tool for building a model of an animal skull defect.

[0026] Label instructions: 1. Base plate, 2. Anti-slip protrusion, 3. Positioning cover, 301. First grinding hole, 302. First mounting hole, 303. First operating hole, 304. Guide hole, 4. Hanger, 5. Positioning mold, 501. Second grinding hole, 502. Second mounting hole, 503. Second operating hole, 504. Water injection channel, 6. Fastening bolt, 7. Guide column, 8. Adjusting nut, 9. Spring, 10. Pad, 1001. Through hole, 1002. Slot, 11. Skull drill. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Embodiment 1:

[0029] See also Figures 1 to 4 As shown, a tool for modeling an animal skull defect model includes a base plate 1 and a head fixator arranged on the base plate 1. The head of the experimental subject is first fixed on the base plate 1 by the head fixator, and then the skull drill 11 is used to carry out drilling operations.

[0030] It should be noted that the experimental subjects generally include mice, rats, rabbits, etc.; the skull drill 11 includes a drill rig, a drill rod and a drill bit, and the drill bit and the drill rod are detachably connected.

[0031] In the above technical solution, preferably, the rear side of the base plate 1 exceeds the head positioner by at least 10 cm, and the exceeding part is used to place the body of the experimental subject; the lower side of the base plate 1 is provided with anti-slip protrusions 2 to prevent the base plate 1 from sliding on the experimental table.

[0032] The head holder comprises a positioning cover 3, a positioning mold 5 and at least two positioning mechanisms.

[0033] For the positioning cover 3, specifically, the positioning cover 3 is a groove structure without a rear side wall, and a first polished hole 301 is provided in the upper side wall of the positioning cover 3 and penetrates it in the vertical direction, and a guide hole 304 is provided in the side wall of the positioning cover 3 and penetrates it in the vertical direction, and the number of the guide holes 304 is consistent with the number of the positioning mechanisms.

[0034] In this embodiment, exemplarily, the first grinding hole 301 is a round hole, and the first grinding hole 301 is compatible with the drill rig of the skull drill 11, that is, the drill rig of the skull drill 11 can be just inserted into the first grinding hole 301; there are four guide holes 304, two guide holes 304 are located on the front side wall of the positioning cover 3, and two guide holes 304 are located on the rear side wall of the positioning cover 3.

[0035] As for the positioning mold 5, specifically, the positioning mold 5 is an L-shaped plate structure, the upper side surface of the upper side wall of the positioning mold 5 and the front side surface of the front side wall are adapted to the groove of the positioning cover 3, the lower side surface of the upper side wall of the positioning mold 5 and the rear side surface of the front side wall are adapted to the head of the experimental object, and a second polished hole 501 is provided in the upper side wall of the positioning mold 5 and penetrates it in the vertical direction, the positioning mold 5 can be detachably fixed in the groove of the positioning cover 3, and the second polished hole 501 is connected to the first polished hole 301 to form a T-shaped hole.

[0036] In this embodiment, illustratively, the second grinding hole 501 is a round hole, and the second grinding hole 501 is slightly larger than the drill bit of the skull drill 11, that is, the drill bit of the skull drill 11 can pass through the second grinding hole 501 with a margin.

[0037] More specifically, the upper side wall of the positioning cover 3 is provided with a first mounting hole 302 that penetrates it in the vertical direction, and the first mounting hole 302 is a light hole, and the upper side wall of the positioning mold 5 is provided with a second mounting hole 502 that penetrates it in the vertical direction corresponding to the first mounting hole 302 provided on the positioning cover 3, and the second mounting hole 502 is a threaded hole, and also includes a fastening bolt 6, which penetrates the first mounting hole 302 and is threadedly connected to the second mounting hole 502, so that the positioning mold 5 can be detachably fixed in the groove of the positioning cover 3.

[0038] In the above technical scheme, preferably, a water injection channel 504 is provided in the positioning mold 5, which extends from the rear side of its upper side wall to the second polishing hole 501. Cooling liquid (for example, saline) is injected into the second polishing hole 501 through the water injection channel 504, which can not only reduce the temperature and prevent the brain tissue from being damaged due to overheating, but also remove the debris generated during the drilling process in real time to reduce damage to surrounding tissues; the lower side of the upper side wall of the positioning mold 5 and the rear side of the front side wall are provided with a deformable cushion layer (not shown in the figure). Based on the deformation effect of the deformable cushion layer, the positioning mold 5 is more closely fitted to the head of the experimental subject to adapt to the subtle differences in body shape of the same experimental subjects.

[0039] As for the positioning mechanism, specifically, the positioning mechanism includes a guide column 7, a spring 9 and an adjusting nut 8. The guide column 7 is fixed on the base plate 1. The spring 9 and the adjusting nut 8 are sequentially inserted into the guide column 7 from bottom to top, and the adjusting nut 8 is threadedly connected to the guide column 7. The guide holes 304 provided on the positioning cover 3 are inserted one by one into the guide column 7 of each positioning mechanism. The positioning cover 3 is located between the adjusting nut 8 and the spring 9 with its groove facing downward, and the spring 9 is in a compressed state.

[0040] In this embodiment, illustratively, there are four groups of positioning mechanisms.

[0041] In the above technical solution, preferably, anti-slip grooves are provided on the outer side surface of the adjusting nut 8.

[0042] In general, in this modeling tool, on the one hand, the positioning mold 5 can be detachably fixed in the groove of the positioning cover 3, so that the positioning mold 5 can be adapted to the heads of different types of experimental subjects. At the same time, the second polishing hole 501 is connected to the first polishing hole 301 to form a T-shaped hole as an operating channel for the skull drill 11. On the other hand, the positioning cover 3 is set on the base plate 1 in an adjustable lifting manner through a positioning mechanism.

[0043] After combining the above two designs, the modeling tool can quickly press the head of the experimental object against the base plate (press the positioning cover downward until the positioning mold presses the head of the experimental object against the base plate, and then tighten the adjusting nut downward until it is against the positioning cover). It is easy to operate and then carry out the drilling operation. It not only has a good positioning effect and improves the accuracy and stability of the drilling operation, but also the positioning mold can be replaced according to the experimental object (after the positioning mold is replaced according to the experimental object, the skull drill should be re-selected so that the length of its drill rod is suitable for the T-shaped hole formed by the second polished hole 501 and the first polished hole 301), and has a wider range of applications.

[0044] Embodiment 2:

[0045] See also Figure 1 , 5As shown in Figures 5 to 6, as another embodiment, a plurality of pads 10 with different thicknesses are further included, and the pads 10 cannot pass through the T-shaped hole formed by the second grinding hole 501 and the first grinding hole 301, and a through hole 1001 is provided at the center of the pad 10.

[0046] According to the above design, when the pad 10 is placed in the T-shaped hole formed by the second grinding hole 501 and the first grinding hole 301, that is, the pad 10 is placed at the lower end of the first grinding hole 301, the travel of the drill rig of the skull drill 11 in the first grinding hole 301 can be limited, thereby accurately controlling the depth of the drilling hole.

[0047] Specifically, the drill rod of the skull drill 11 is first passed through the through hole 1001 provided on the pad 10, and then the drill bit of the skull drill 11 is installed, and finally the skull drill 11 is inserted along the T-shaped hole formed by the second polishing hole 501 and the first polishing hole 301, so that the drill bit of the skull drill 11 is flush with the lower end of the second polishing hole 501, and the pad 10 is placed at the lower end of the first polishing hole 301. For example, by selecting the model, in the initial state, the drill rig of the skull drill 11 is flush with the upper end of the first polishing hole 301, and the drill bit of the skull drill 11 is flush with the lower end of the second polishing hole 501. At this time, the distance between the drill rig of the skull drill 11 and the lower end of the first polishing hole 301 is H1, the thickness of the pad 10 is H2, and the depth of the drilling is H1-H2.

[0048] In the above technical solution, preferably, a slot 1002 is provided between the circumference of the pad 10 and the through hole 1001 provided at the center thereof, and the width of the slot 1002 is adapted to the drill rod of the skull drill 11. Therefore, even if the drill bit of the skull drill 11 is installed, the drill rod of the skull drill 11 can still be matched with the through hole 1001 provided on the pad 10 through the slot 1002 provided on the pad 10.

[0049] Embodiment 3:

[0050] See also Figures 1 to 4 As shown, as another embodiment, a hanger 4 is provided on the front side of the front side wall of the positioning cover 3, a hook is provided on the hanger 4, a first operating hole 303 is provided on the front side wall of the positioning cover 3, a second operating hole 503 is provided on the front side wall of the positioning mold 5, and the first operating hole 303 is connected to the second operating hole 503.

[0051] In this embodiment, illustratively, the first operating hole 303 and the second operating hole 503 are both rectangular holes, and the two are equal in size and flush.

[0052] According to the above design, after the subject's head is pressed against the bottom plate 1, the subject's incisors can be hooked on the hooks provided on the hanger 4 through the first operating hole 303 and the second operating hole 503 by means of an elastic rope to further position the subject's head.

[0053] In the above technical solution, preferably, at least two hooks are provided on the hanger 4, and the hooks are arranged along the vertical direction on the hanger 4, so that the tension of the elastic rope can be adjusted by replacing the hooks.

[0054] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art can implement the present invention in various other specific implementation modes based on the contents disclosed in the present invention. Therefore, any design that adopts the design structure and concept of the present invention and makes some simple changes or modifications shall fall within the scope of protection of the present invention.

Claims

1. A tool for modeling an animal skull defect model, characterized in that: It includes a bottom plate and a head fixer arranged on the bottom plate, wherein the head fixer includes a positioning cover, a positioning mold and at least two positioning mechanisms; The positioning cover is a slot structure without a rear side wall, a first grinding hole penetrating the upper side wall of the positioning cover is provided in the upper side wall thereof in a vertical direction, a guide hole penetrating the side wall thereof in a vertical direction is provided in the side wall thereof, and the number of the guide holes is consistent with the number of the positioning mechanisms; The positioning mold is an L-shaped plate structure, the lower side of the upper side wall and the rear side of the front side wall of the positioning mold are adapted to the head of the experimental object, the upper side wall of the positioning mold is provided with a second polished hole penetrating the upper side wall in a vertical direction, the positioning mold is detachably fixed in the groove of the positioning cover, and the second polished hole is connected to the first polished hole to form a T-shaped hole; The positioning mechanism includes a guide column, a spring and an adjusting nut. The guide column is fixed on the base plate. The spring and the adjusting nut are sequentially inserted into the guide column from bottom to top, and the adjusting nut is threadedly connected to the guide column. The guide holes provided on the positioning cover are inserted into the guide columns of each positioning mechanism one by one. The positioning cover is located between the adjusting nut and the spring with its groove facing downward, and the spring is in a compressed state.

2. The animal skull defect modeling tool according to claim 1, characterized in that: It also includes a plurality of pads with different thicknesses, and the pads cannot pass through the T-shaped hole formed by the second grinding hole and the first grinding hole, and a through hole is arranged at the center of the pads.

3. The animal skull defect modeling tool according to claim 2, characterized in that: A slot is provided between the circumference of the pad and the through hole at the center thereof, and the width of the slot is matched with the drill rod of the skull drill.

4. The animal skull defect modeling tool according to claim 1, characterized in that: A hanger is provided on the front side of the front side wall of the positioning cover, a hook is provided on the hanger, a first operating hole is provided on the front side wall of the positioning cover, a second operating hole is provided on the front side wall of the positioning mold, and the first operating hole is connected to the second operating hole.

5. The animal skull defect modeling tool according to claim 4, characterized in that: The hanging rack is provided with at least two hooks, and the hooks are arranged on the hanging rack along the vertical direction.

6. The animal skull defect modeling tool according to claim 1, characterized in that: The positioning mold is provided with a water injection channel extending from the rear side of the upper side wall thereof to the second polishing hole.

7. The animal skull defect modeling tool according to any one of claims 1 to 6, characterized in that: The upper side wall of the positioning cover is provided with a first mounting hole penetrating therethrough in a vertical direction, and the first mounting hole is a smooth hole. The upper side wall of the positioning mold is provided with a second mounting hole penetrating therethrough in a vertical direction at a position corresponding to the first mounting hole provided on the positioning cover, and the second mounting hole is a threaded hole, and also includes a fastening bolt, which passes through the first mounting hole and is threadedly connected to the second mounting hole.

8. The animal skull defect modeling tool according to any one of claims 1 to 6, characterized in that: The rear side of the base plate extends beyond the head positioner by at least 10 cm.

9. The animal skull defect modeling tool according to any one of claims 1 to 6, characterized in that: The lower side surface of the upper side wall and the rear side surface of the front side wall of the positioning mold are both provided with a deformation cushion layer.

10. The animal skull defect modeling tool according to any one of claims 1 to 6, characterized in that: The lower side of the bottom plate is provided with anti-skid protrusions.

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