Medium-sized experimental animal bone defect model construction device

Abstract

The utility model provides a middle-sized experimental animal bone defect model construction device, which is provided with two symmetrical inclined openings, sawteeth are arranged on the inclined openings, and the sawteeth comprise a plurality of same irregular fan-shaped bodies, so that openings with the same size can be formed on a bone tissue sample, and the same bone tissue modeling sample is provided for animal model research. On one hand, the bevel opening can be directly aligned with the modeling position to be quickly inserted, and defect modeling is quickly completed; on the other hand, the bevel opening can play a role in positioning and fixing, and defect molding is completed by means of tools such as a drill bit. The middle-sized experimental animal bone defect model construction device is simple in structure, easy to operate, low in cost and very suitable for animal model research.

Description

Technical Field

[0001] The utility model relates to a device for constructing a medium-sized experimental animal bone defect model. Background Art

[0002] In bone tissue engineering, commonly used bone / soft tissue defect repair materials typically require further animal model studies to more effectively validate their effectiveness in promoting bone / soft tissue regeneration. However, traditional animal bone / soft tissue defect modeling relies heavily on surgeon experience, often leading to inconsistent modeling locations. This is especially true when modeling multiple specimens, which can affect the postoperative measurement of newly formed bone / soft tissue, leading to errors in the final assessment of bone / soft tissue repair efficacy and ultimately causing experimental failure.

[0003] If modeling forceps are used, the inner sides of the positioning holes of the general modeling forceps are generally set in parallel regardless of whether they have serrations. Although this setting can make the modeling forceps widely versatile, it may not be suitable for certain bone tissue samples. These bone tissue samples are poorly fixed when modeled using general modeling forceps, resulting in modeling errors that affect subsequent experiments.

[0004] For this reason, a new type of modeling pliers is needed to solve the above problems. Utility Model Content

[0005] The present invention overcomes the deficiencies of existing technologies and provides a device for constructing a bone defect model for a medium-sized experimental animal. The present invention provides a device for constructing a bone defect model for a medium-sized experimental animal, which is provided with two symmetrical bevels, and serrations are provided on the bevels. The serrations include a plurality of identical irregular fan-shaped bodies, which can form openings of uniform size on the bone tissue sample, providing identical bone tissue modeling specimens for animal model research. On the one hand, the bevels can be directly aligned with the modeling position and quickly inserted to quickly complete the defect modeling; on the other hand, the bevels can play a role in positioning and fixing, and the defect modeling can be completed with the help of tools such as drill bits. The present device for constructing a bone defect model for a medium-sized experimental animal has a simple structure, simple operation, and low cost, and is very suitable for animal model research.

[0006] A device for constructing a medium-sized experimental animal bone defect model comprises an oblique opening for directly modeling or locating a specific position of a bone tissue sample.

[0007] On the one hand, the bevel is set to facilitate quick insertion after aligning with the modeling position, and to directly and quickly complete the defect modeling; on the other hand, the bevel can play a role in positioning and fixing, and the defect modeling can be completed with the help of tools such as drill bits.

[0008] Furthermore, the bevel is inclined outward, and an extension surface of the bevel surface intersects with an extension surface of the rotating arm.

[0009] In some embodiments, an included angle between an extension surface of the bevel surface and an extension surface of the rotating arm is an acute angle.

[0010] Furthermore, the number of the bevels is two and they are symmetrically arranged, and the extended surfaces of the bevel surfaces of the two bevels intersect at one end close to the rotation axis.

[0011] Furthermore, the saw teeth include a plurality of irregular sector-shaped bodies of the same size, which are arranged around the circumference of the bevel, and the outer sector radius of the irregular sector-shaped body should be larger than the inner sector radius.

[0012] Since bone tissue is a hard structure, the instrument for removing the bone tissue surface is set to be serrated. Firstly, it is to allow penetration without exerting much force during insertion. Secondly, the surface of bone tissue is relatively smooth, and the serrations can effectively prevent slipping during the modeling process.

[0013] In some embodiments, the bevel has a certain thickness, and the cross section parallel to the rotating arm is a concentric circle. The inner radius of the concentric circle is smaller than the outer radius. Therefore, when the irregular sector-shaped serrations are arranged around the bevel, the outer sector radius should be larger than the inner sector radius, and the difference between the outer and inner radii of the concentric circle is the length of the irregular sector-shaped serrations.

[0014] Furthermore, as the vertical distance from the saw teeth to the rotating shaft becomes farther and farther, the vertical distance from the saw teeth to the rotating arm becomes closer and closer.

[0015] Furthermore, the rotating arm includes a first rotating arm and a second rotating arm, both the first rotating arm and the second rotating arm are provided with positioning holes, and positioning pieces are provided around the circumference of the positioning holes.

[0016] In some methods, the bevel and serrations are set on the inner side of the positioning hole. The bevel and serrations are actually part of the positioning hole. The two positioning holes clamp and fix the two ends of the bone tissue sample, and the drill bit forms a hole in the bone tissue through the positioning holes.

[0017] The two positioning holes of general modeling forceps are arranged in parallel, and the range of bone tissue samples that can be used is very wide, but it is not suitable for certain bone tissue samples. The medium-sized experimental animal bone defect model construction device of the utility model is provided with an oblique mouth and serrations are provided on the circumference of the oblique mouth in order to adapt to certain bone tissue samples. Modeling is performed at a specific position of the bone tissue sample, such as the epiphysis of a long bone. The bulges at both ends of the bone of a long bone are called epiphysis. The end of the epiphysis away from the bone shaft is large, and the end close to the bone shaft is small, which is consistent with the space formed between the two oblique mouths. The epiphysis of the bone tissue sample is placed between the two oblique mouths. The medium-sized experimental animal bone defect model construction device forms a certain angle with the bone tissue sample above the bone tissue sample. The two oblique mouths not only locate the position of the epiphysis, but also firmly wrap and fix the epiphysis. The serrations bite and deepen the fixation tightly to prevent it from moving, providing convenience for subsequent modeling.

[0018] Furthermore, the positioning member includes a first positioning rod and a second positioning rod, the first positioning rod and the second positioning rod are arranged in parallel, and the length of the first positioning rod is smaller than the length of the second positioning rod.

[0019] In some embodiments, the ends of the first positioning rod and the second positioning rod are configured to be chamfered semicircular arcs.

[0020] When modeling specific areas of bone tissue samples, positioning rods are used to separate soft tissue, providing a more convenient path for modeling. The positioning rods are arranged in parallel to facilitate sliding into the soft tissue, and the positioning rods are arranged in different lengths to facilitate the separation of the soft tissue after wrapping and fixation.

[0021] Furthermore, the positioning member and the first rotating arm have a certain angle, and the positioning member of the first rotating arm and the positioning member of the second rotating arm are symmetrically arranged.

[0022] Furthermore, the first rotating arm and the second rotating arm are connected by a rotating shaft, and the two ends of the first rotating arm and the second rotating arm respectively include a modeling end and an operating end, the modeling end is used for modeling or fixing bone tissue, and the operating end is used to control the opening or closing of the modeling end.

[0023] Furthermore, the operating end is also provided with a lock buckle and a finger ring, the lock buckle is used to fix the modeling pliers in the clamping state, and the finger ring is used for finger force operation.

[0024] In some embodiments, the lock includes a first rotating arm serration and a second rotating arm serration. When the lock is locked, the first rotating arm serration and the second rotating arm serration engage with each other. The setting of the finger ring improves the operating efficiency of the medium-sized experimental animal bone defect model construction device.

[0025] When the bone tissue sample is positioned and secured by the positioning member and the positioning hole, the teeth of the first and second rotating arms engage, locking the latch. This secures the positioning member and the bone tissue sample, preventing displacement and facilitating the drill bit's passage through the positioning hole. To release the bone tissue sample, simply squeeze inward to dislocate the teeth of the first and second rotating arms and then push the operating end rotating arm outward to unlock the latch.

[0026] The utility model has the following beneficial effects:

[0027] 1. The medium-sized experimental animal bone defect model construction device provided by the utility model has two opposite bevels set in the positioning hole, and multiple identical irregular fan-shaped serrations are set around the bevels. On the one hand, it locates the specific position of the bone tissue sample, and on the other hand, it strengthens the fixation effect;

[0028] 2. This medium-sized experimental animal bone defect model construction device, combined with a positioning device, can form openings of uniform size on bone tissue samples, providing identical bone tissue sample samples for animal model research;

[0029] 3. This medium-sized experimental animal bone defect model construction device has a simple structure, simple operation, and low cost, and is very suitable for animal model research. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the overall structure of the device for constructing a medium-sized experimental animal bone defect model in Example 1;

[0031] Figure 2 This is a side view of the modeling end of the device for constructing a medium-sized experimental animal bone defect model in Example 1;

[0032] Figure 3 This is a schematic diagram of the structure of the modeling end of the medium-sized experimental animal bone defect model construction device in Example 1;

[0033] Figure 4 This is a side view of the serrated oblique opening of the device for constructing a medium-sized experimental animal bone defect model in Example 1;

[0034] Figure 5 This is a side view of the serrated oblique opening of the device for constructing a medium-sized experimental animal bone defect model in Example 1;

[0035] Figure 6 A top view of the serrated oblique opening of the device for constructing a medium-sized experimental animal bone defect model in Example 1;

[0036] Figure 7 This is a schematic diagram of the locking structure of the operating end of the medium-sized experimental animal bone defect model construction device in Example 1;

[0037] Figure 8 Schematic diagram of the locking structure of the operating end of the medium-sized experimental animal bone defect model construction device in Example 1. DETAILED DESCRIPTION

[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments described below are intended to facilitate understanding of the present invention and do not have any limiting effect on the present invention.

[0039] Example 1: A device for constructing a medium-sized experimental animal bone defect model

[0040] In bone tissue engineering, commonly used bone / soft tissue defect repair materials usually require further animal model research to more effectively verify the actual effect of bone tissue engineering materials in promoting bone / soft tissue regeneration. The bone tissue samples in the present invention are usually bone tissue samples of experimental animals, such as: mouse, rabbit, sheep and other animal samples. Usually, in order to ensure the accuracy of the experimental results, the experimental animals selected also need to be standardized. For example, when selecting a group of experimental samples, it is necessary to fully consider factors such as gender, birth week, weight, etc., and keep these factors consistent or within a certain error value range to ensure that the obtained experimental data is more accurate.

[0041] like Figures 1 to 3 As shown, the device for constructing a bone defect model for a medium-sized experimental animal includes a first rotating arm 1 and a second rotating arm 2, which are connected by a rotating shaft 3. The two ends of the first rotating arm 1 and the second rotating arm 2 respectively include a modeling end 4 and an operating end 5, the modeling end 4 is used for modeling or fixing bone tissue, and the operating end 5 is used to control the opening or closing of the modeling end. The modeling ends 4 of the first rotating arm 1 and the second rotating arm 2 are provided with positioning holes 6 for positioning and drilling of bone tissue. The two positioning holes clamp and fix the two ends of the bone tissue, and the drill bit forms a hole in the bone tissue through the positioning holes. The positioning hole 6 of the first rotating arm 1 is provided with a protrusion 15, which deepens the depth of the positioning hole 6 and makes the drill bit more stable when drilling on the bone tissue. The positioning member 7 is arranged outside the circumference of the protrusion 15 and is used to separate soft tissue, and includes a first positioning rod 8 and a second positioning rod 9, and the ends of the first positioning rod 8 and the second positioning rod 9 are arranged to be chamfered semicircular arcs. The first and second positioning rods 8, 9 are arranged parallel to each other, facilitating their sliding entry into soft tissue. The first positioning rod 8 is shorter than the second positioning rod 9. The different lengths of the positioning rods facilitate wrapping and securing the soft tissue before separation. The extension of the positioning member 7 forms an acute angle 19 with the extension of the first pivoting arm 1. The positioning members of the first pivoting arm 1 and the second pivoting arm 2 are symmetrically arranged.

[0042] like Figures 3 to 6As shown, the inner surfaces of the positioning holes 6 of the first and second rotating arms 1 and 2 are both symmetrically provided with beveled openings 10. The beveled openings allow for quick insertion and direct alignment with the molding position, allowing for rapid defect molding. Furthermore, the beveled openings serve as positioning and fixation, allowing for the completion of defect molding with the aid of tools such as drill bits. The circumference of the beveled opening 10 is provided with serrations 16, which consist of eighteen irregular sector-shaped elements of equal size. Since bone tissue is a hard structure, the serrations 16 are provided to ensure minimal force during insertion and, because the bone surface is relatively smooth, the serrations effectively prevent slippage during the molding process. The beveled opening 10 has a certain thickness, and its cross-section parallel to the rotating arms forms a concentric circle. The inner radius of the concentric circle is smaller than the outer radius. Therefore, when the irregular sector-shaped serrations 16 are arranged around the beveled opening, the outer sector radius 19 should be larger than the inner sector radius 21. The difference between the outer and inner radii of the concentric circle is equal to the length 20 of the irregular sector-shaped serrations. Bevel 10 is outwardly inclined, with the extension of the beveled surface forming an acute angle 17 with the extension of the pivot arm. The extensions of the two symmetrical bevels intersect at an acute angle 18 at one end near the pivot axis. As the vertical distance from the pivot axis 3 increases, the serrations 16 decrease in vertical distance from the pivot arm. 22 indicates the farthest distance from the pivot arm, and 23 indicates the closest distance. Bevel 10 and serrations 16 can locate and fixate specific locations of bone tissue samples, such as the epiphysis of a long bone. The swellings at both ends of a long bone are called epiphyses. The epiphysis is larger at the end away from the diaphysis and smaller at the end closer to the diaphysis, coinciding with the space formed between the two serrated bevels. The epiphysis of the bone tissue sample is placed between the two oblique openings, and the medium-sized experimental animal bone defect model construction device is placed above the bone tissue sample to form a certain angle with the bone tissue sample. The two oblique openings not only locate the modeling position of the epiphysis, but also firmly wrap and fix the epiphysis. The serrations bite tightly to deepen the fixation and prevent it from moving.

[0043] like Figures 7-8As shown, the operating ends 5 of the first and second rotating arms 1 and 2 are provided with a lock 11 for securing the modeling forceps in the clamped state. The lock 11 includes first and second rotating arm serrations 12 and 13, which engage with each other when the lock is locked. When the bone tissue sample is positioned and fixed by the positioning member 7 and the positioning hole 6, the first and second rotating arm serrations 12 and 13 engage, locking the lock 11. The positioning device and the bone tissue sample are firmly fixed and prevented from displacement, facilitating the drill bit to drill through the positioning hole. To release the bone tissue sample, the lock 11 can be opened by simply squeezing the first and second rotating arm serrations 12 and 13 inward to offset the serrations and then applying force outward to the first and second rotating arms 1 and 2 at the operating end 5. The operating ends 5 of the first and second rotating arms 1 and 2 are also provided with a finger ring 14. The finger ring facilitates finger operation and improves the efficiency of the medium-sized experimental animal bone defect model construction device.

[0044] Preferably, the medium-sized experimental animal bone defect model construction device provided in this example can be enlarged or reduced in a certain proportion according to the actual bone tissue sample required.

[0045] Although the present invention is disclosed as above, it is not limited thereto. Any person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope defined by the claims.

Claims

1. A device for constructing a medium-sized experimental animal bone defect model, characterized in that: It includes an oblique opening, which is used to directly model or position and fix the epiphysis of long bones; the oblique opening is inclined outward, and the extended surface of the oblique opening intersects with the extended surface of the rotating arm; the oblique opening is provided with serrations, and the serrations include a plurality of irregular fan-shaped bodies of the same size, which are arranged around the circumference of the oblique opening; the rotating arm includes a first rotating arm and a second rotating arm; the two ends of the first rotating arm and the second rotating arm respectively include a modeling end and an operating end; the operating end is provided with a lock, and the lock is used to fix the modeling clamp in a clamping state.

2. The medium-sized experimental animal bone defect model construction device according to claim 1, characterized in that: There are two bevels which are symmetrically arranged, and the extended surfaces of the bevel surfaces of the two bevels intersect at one end close to the rotation axis.

3. The medium-sized experimental animal bone defect model construction device according to claim 1, characterized in that: The outer sector radius of the irregular sector-shaped body is greater than the inner sector radius.

4. The medium-sized experimental animal bone defect model construction device according to claim 1, characterized in that: As the vertical distance from the saw teeth to the rotating axis becomes farther and farther, the vertical distance from the saw teeth to the rotating arm becomes closer and closer.

5. The medium-sized experimental animal bone defect model construction device according to claim 4, characterized in that: The first rotating arm and the second rotating arm are both provided with positioning holes, and positioning pieces are provided around the periphery of the positioning holes.

6. The medium-sized experimental animal bone defect model construction device according to claim 5, characterized in that: The positioning member includes a first positioning rod and a second positioning rod. The first positioning rod and the second positioning rod are arranged in parallel, and the length of the first positioning rod is smaller than the length of the second positioning rod.

7. The medium-sized experimental animal bone defect model construction device according to claim 6, characterized in that: The positioning member and the first rotating arm have a certain angle, and the positioning member of the first rotating arm and the positioning member of the second rotating arm are symmetrically arranged.

8. The medium-sized experimental animal bone defect model construction device according to claim 7, characterized in that: The first rotating arm and the second rotating arm are connected via a rotating shaft. The modeling end is used for modeling or fixing bone tissue, and the operating end is used for controlling the opening or closing of the modeling end.

9. The medium-sized experimental animal bone defect model construction device according to claim 8, characterized in that: The operating end is further provided with a finger ring, which is used for finger force operation.

Images