Auxiliary device for preparing rat periodontal bone defect model
By designing an auxiliary device for a rat periodontal bone defect model, the problems of difficult positioning and removal of drilled fragments were solved, achieving precise positioning, stable drilling, and fragment removal, thus ensuring the accuracy and efficiency of the experiment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-20
AI Technical Summary
In the rat alveolar bone drilling modeling experiment, problems such as difficulty in positioning, inconsistent depth, and difficulty in removing drill fragments led to inaccurate experimental data and damage to the rat's physiological structure, affecting the experimental process.
An auxiliary device was designed, comprising a positioning pin, a sliding beam, a limiting beam, and a negative pressure device. It achieves precise positioning and angle adjustment through a V-shaped positioning arm and a connecting ball head, and is equipped with a negative pressure device to suck out bone fragments. Combined with a depth limiting sleeve, it ensures consistent drilling depth.
This improved the accuracy and efficiency of the experiment, avoided inflammatory reactions caused by debris residue, ensured the accuracy and reliability of the experimental results, and enhanced the versatility and stability of the device.
Smart Images
Figure CN224012532U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a kind of auxiliary devices for rat periodontal bone defect model preparation. BACKGROUND
[0002] When carrying out rat alveolar bone drilling modeling experiment, there are many tricky problems. Positioning difficulty is a big challenge, rat alveolar bone position is hidden and the surrounding structure is complex, in actual operation, due to its anatomical structure is subtle, naked eye is difficult to accurately distinguish the boundary of alveolar bone, a little deviation is easy to drill into mandible or tooth. This not only will destroy the expected modeling site of experiment, lead to inaccurate experimental data, but also can damage the normal physiological structure of rat, affect subsequent experimental process. At the same time, depth determination also has problem, different rat individuals exist difference in physiological characteristics such as alveolar bone thickness, lack unified and explicit drilling depth standard, it is difficult to guarantee the consistency of each modeling. In addition, the fragment after drilling is difficult to take out, narrow drilling space limits the operation of tool, if fragment remains, it can cause inflammatory reaction, interfere with experimental results, bring great uncertainty to research. SUMMARY
[0003] In view of the deficiencies of the prior art, the utility model provides an auxiliary device for rat periodontal bone defect model preparation, which is simple in structure, convenient for positioning rat oral cavity, facilitates subsequent drilling operation and has good use effect.
[0004] To achieve the above-mentioned purpose, the utility model provides an auxiliary device for rat periodontal bone defect model preparation, which comprises a frame body, a plurality of positioning pins are arranged on the frame body for fixing, a sliding beam is arranged on the frame body along the width direction, a sliding positioning member is arranged on the sliding beam, the positioning member comprises two positioning arms connected in V shape, a sliding groove is arranged on one of the positioning arms along the length direction, the positioning member is slidably connected with the sliding beam through the sliding groove, a limiting beam is further arranged on the frame body, a limiting plate is slidably arranged on the limiting beam, a connecting ball head is rotatably arranged on the limiting plate, a matching hole is arranged on the connecting ball head, a drill is matched in the matching hole, and a negative pressure device for sucking out bone fragments is connected to the drill.
[0005] The beneficial effect of such arrangement is that the positioning member is composed of two V-shaped connecting positioning arms, which can be slidably connected with the sliding beam through the sliding groove, and can be moved left and right flexibly. In actual operation, the researchers can accurately select one side of the rat's oral cavity for insertion operation according to the experimental requirements. This unilateral insertion method greatly avoids interference with the structure of the other side of the oral cavity, ensures that the other side remains intact when the one side is expanded, and provides convenience for subsequent comparative experiments or other operations. At the same time, the structure is not limited to intraoral modeling, and the oral cavity shape can be fixed by the opening fixation of the positioning member, so that the modeling can be performed outside the mouth. Moreover, as the positioning member is gradually inserted, the two positioning arms can be inserted to different depths according to the size of the rat's oral cavity, so as to adapt to oral cavities of different sizes, thereby significantly improving the versatility and adaptability of the device. The limiting plate arranged on the limiting beam and the rotatingly connected connecting ball head also bring many conveniences to the experimental operation. The connecting ball head can freely swing in all directions, which means that when different angle drilling or other operations are required on the rat's alveolar bone, the tool installed in the cooperation hole of the connecting ball head can easily adjust the angle by following the swing of the connecting ball head, breaking through the limitation of the traditional fixed device in the operation angle, and enabling the researchers to more conveniently and accurately operate the rat's alveolar bone. At the same time, the negative pressure device provided on the drill solves the long-standing problem of difficult removal of bone fragments after drilling. During drilling, the negative pressure device can be started in time to quickly suck away the generated bone fragments, avoiding the residues of the fragments in the narrow drilling space. This not only effectively prevents inflammation caused by the residues of the fragments, ensures the accuracy and reliability of the experimental results, but also greatly improves the efficiency of the experimental operation; further, a new support can be assembled on the limiting beam to fix the air tube, which can be a clamping jaw or a support frame composed of a corrugated pipe. This structure is convenient to expand, and the whole frame body can effectively limit the rat's head while leaving a small space for the rat's head to adjust as needed, which provides a strong guarantee for the smooth development of the rat's alveolar bone drilling modeling experiment.
[0006] As a further arrangement of the present application, a plurality of clamping grooves are arranged at intervals on the outer wall of the positioning arm of the positioning member.
[0007] The beneficial effect of the arrangement is that when the positioning member is inserted into the oral cavity of the rat, the operator can flexibly adjust the insertion depth according to the actual operation requirement, and once the appropriate depth is reached, the clamping groove on the positioning arm can be accurately clamped with the front teeth of the oral cavity of the rat, the structure of the front teeth of the oral cavity of the rat is relatively stable, the clamping groove is closely matched with the front teeth of the oral cavity of the rat, and the sliding of the positioning member in the subsequent operation process can be effectively prevented, the stability of the positioning member in the oral cavity of the rat is greatly enhanced, the positioning member can always maintain the predetermined position during drilling and other operations, the operation deviation caused by the sliding is avoided, and the smooth progress of the rat alveolar bone drilling modeling experiment is ensured.
[0008] As a further arrangement of the utility model, a notch groove is arranged on the sliding groove of the positioning arm.
[0009] The beneficial effect of the arrangement is that the notch groove can cooperate with the sliding beam to further realize the stable limiting of the positioning member in the front-rear direction. In the experimental operation process, the displacement of the positioning member may be caused by the touching of the instrument or the slight action of the rat. The close fit of the notch groove and the limiting structure can effectively prevent the displacement and greatly avoid the sliding of the positioning member, thereby enhancing the stability of the positioning member and ensuring the accuracy of the experimental operation when the operator performs fine operations such as drilling.
[0010] As a further arrangement of the utility model, a drill head is connected to the output shaft end of the drill, and a depth limiting sleeve is threadedly matched on the drill.
[0011] The beneficial effect of the arrangement is that the drill head is connected to the output shaft end of the drill, and the depth limiting sleeve threadedly matched on the drill is sleeved outside the drill head. When drilling is performed, the operator can adjust the position of the drill on the drill by rotating the depth limiting sleeve according to the actual situation of the alveolar bone of the rat. During drilling, when the depth limiting sleeve contacts the peripheral tissue of the oral cavity of the rat, the drill head is prevented from continuing to descend. This design effectively avoids the damage to the alveolar bone and the surrounding tissue of the rat caused by excessive drilling, ensures the consistency of the drilling depth each time, provides a strong guarantee for the accuracy and reliability of the experimental data, and greatly improves the operation precision of the rat alveolar bone drilling modeling experiment.
[0012] As a further arrangement of the utility model, the drill head comprises a positioning drill and a cutting drill, the positioning drill is connected to the center of the output shaft of the drill, the cutting drill is arranged in the circumferential direction of the positioning drill, and the depth limiting sleeve is sleeved outside the cutting drill.
[0013] The beneficial effect of the arrangement is that the drill head is composed of a positioning drill and a cutting drill, wherein the positioning drill is connected to the center of the drill output shaft. When the drilling operation is started, the positioning drill first contacts the rat alveolar bone. Because it is in the center position, it can provide a stable reference point for the entire drilling process, effectively avoiding the phenomenon of drill head deviation during initial drilling. At the same time, the cutting drill arranged circumferentially along the positioning drill can more uniformly and efficiently cut the alveolar bone under the stable guidance of the positioning drill. The cutting drill can also be in the form of a ball drill and can be used for local flattening operation. As an optimization, the drill head can be replaced as a whole, and the specific connection mode can adopt a magnetic attraction fixing mode, or a clamping fixing or locking pin fixing mode. In this way, not only the accuracy of the cutting path is ensured, but also the cutting effect is greatly improved, ensuring that the drilling edge is neat and smooth, laying a good foundation for subsequent experimental operation and effectively promoting the smooth development of the rat alveolar bone drilling modeling experiment. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the embodiment of the utility model;
[0015] Figure 2 It is a cross-sectional view of the drill in the embodiment of the utility model;
[0016] Figure 3 It is a schematic diagram of the structure of the positioning member in the embodiment of the utility model;
[0017] Figure 4 It is a cross-sectional view of the second embodiment of the drill head in the embodiment of the utility model;
[0018] Figure 5 It is a cross-sectional view of the third embodiment of the drill head in the embodiment of the utility model. DETAILED DESCRIPTION
[0019] The utility model provides a kind of auxiliary device for rat periodontal bone defect model preparation embodiment, as shown in Figures 1 to 3As shown, it comprises a frame body 1, a plurality of positioning pin rods 13 are arranged on the frame body 1 for mounting and fixing, a sliding beam 11 is arranged on the frame body 1 along the width direction, a positioning piece 2 is slidably arranged on the sliding beam 11, the positioning piece 2 comprises two positioning arms which are connected in a V shape, a sliding groove 21 is arranged on one of the positioning arms along the length direction, the positioning piece 2 is slidably matched with the sliding beam 11 through the sliding groove 21, a limiting beam 12 is further arranged on the frame body 1, a limiting plate 3 is slidably arranged on the limiting beam 12, a connecting ball head 31 is rotatably arranged on the limiting plate 3, a matching hole is arranged on the connecting ball head 31, a drill 4 is matched in the matching hole, and a negative pressure device (not shown in the figure) for sucking out bone fragments is connected to the drill 4. The beneficial effects of such arrangement are as follows: the positioning piece 2 is composed of two positioning arms connected in a V shape and is slidably matched with the sliding beam 11 through the sliding groove 21, so that it can be moved left and right flexibly. In actual operation, researchers can accurately select one side of the rat's oral cavity for insertion operation according to experimental requirements. This unilateral insertion method greatly avoids interference with the structure of the other side of the oral cavity and ensures that the other side remains intact when the one side is being flared, thereby providing convenience for subsequent comparative experiments or other operations. Moreover, as the positioning piece 2 is gradually inserted, the two positioning arms can select the insertion depth according to the size of the rat's oral cavity, thereby adapting to oral cavities of different sizes and significantly improving the versatility and adaptability of the device. The limiting plate 3 slidably arranged on the limiting beam 12 and the rotatably connected connecting ball head 31 also bring many conveniences to experimental operation. The connecting ball head 31 can swing freely in all directions, which means that when different angle drilling or other operations are needed on the rat's alveolar bone, the tool installed in the matching hole of the connecting ball head 31 can easily adjust the angle by following the swing of the connecting ball head 31, breaking through the limitations of traditional fixed devices in operation angle and enabling researchers to operate the rat's alveolar bone more conveniently and accurately. Meanwhile, the negative pressure device equipped on the drill 4 solves the long-standing problem of difficult removal of bone fragments after drilling. During the drilling process, the negative pressure device can be started in time to quickly suck out the generated bone fragments, avoiding the residues of the fragments in the narrow drilling space. This not only effectively prevents inflammation caused by the residues of the fragments and ensures the accuracy and reliability of the experimental results, but also greatly improves the efficiency of experimental operation and provides a strong guarantee for the smooth development of rat alveolar bone drilling modeling experiments.
[0020] As a further feature of this embodiment, the outer wall of the positioning arm of the positioning member 2 is provided with a plurality of engaging grooves 23 at intervals. The beneficial effect of this design is that when the positioning member 2 is inserted into the rat's oral cavity, researchers can flexibly adjust the insertion depth according to actual operational needs. Once a suitable depth is reached, the engaging grooves 23 on the positioning arm can precisely engage with the front teeth of the rat's oral cavity. The front teeth structure of the rat's oral cavity is relatively stable, and the engaging grooves 23 fit tightly with them, effectively preventing the positioning member 2 from slipping during subsequent operations. This design greatly enhances the stability of the positioning member 2 within the rat's oral cavity, ensuring that the positioning member 2 always maintains its predetermined position during drilling and other operations, avoiding operational deviations due to slippage, and ensuring the smooth progress of the rat alveolar bone drilling modeling experiment.
[0021] As a further feature of this embodiment, a notch 22 is provided on the sliding groove 21 of the positioning arm. The beneficial effect of this design is that the notch 22 can cooperate with the sliding beam 11 to further stabilize and limit the positioning element 2 in the front-back direction. During experimental operations, displacement of the positioning element 2 may occur due to instrument contact or the rat's own subtle movements. The tight fit between the notch 22 and the limiting structure effectively prevents such displacement, greatly avoiding slippage of the positioning element 2, enhancing its stability, and allowing researchers to perform delicate operations such as drilling without worrying about interference from changes in the position of the positioning element 2, thus ensuring the accuracy of the experimental operation.
[0022] As a further feature of this embodiment, a cutting head 5 is connected to the end of the output shaft 41 of the drill 4, and a depth limiting sleeve 42 is threaded onto the drill 4, which is fitted over the cutting head 5. The advantage of this configuration is that, with the cutting head 5 connected to the end of the output shaft 41 of the drill 4, and the depth limiting sleeve 42 threaded onto the drill 4, it can be adjusted by rotating the depth limiting sleeve 42 on the drill 4 during drilling, according to the actual condition of the rat's alveolar bone. During drilling, as the cutting head 5 gradually penetrates deeper, the depth limiting sleeve 42 prevents the cutting head 5 from continuing to descend when it contacts the surrounding tissues of the rat's oral cavity. This design effectively avoids damage to the rat's alveolar bone and surrounding tissues due to excessive drilling, ensures consistent drilling depth each time, provides strong support for the accuracy and reliability of experimental data, and greatly improves the operational precision of the rat alveolar bone drilling modeling experiment.
[0023] As a further arrangement of the present embodiment, the cutter head 5 comprises a positioning drill 51 connected at the center of the output shaft 41 of the drill 4 and a cutting drill 52 arranged circumferentially along the positioning drill 51, and the depth limiting sleeve 42 is sleeved outside the cutting drill 52. The beneficial effect of such an arrangement is that the cutter head 5 is composed of the positioning drill 51 and the cutting drill 52, wherein the positioning drill 51 is connected at the center of the output shaft 41 of the drill 4. When the drilling operation is started, the positioning drill 51 first contacts the rat alveolar bone. Since it is in the center position, it can provide a stable reference point for the entire drilling process, effectively avoiding the phenomenon of deviation of the cutter head 5 during initial drilling. At the same time, the cutting drill 52 arranged circumferentially along the positioning drill 51 can more uniformly and efficiently cut the alveolar bone under the stable guidance of the positioning drill 51. In this way, not only the accuracy of the cutting path is ensured, but also the cutting effect is greatly improved, ensuring that the drilling edge is neat and smooth, laying a good foundation for subsequent experimental operations and effectively promoting the smooth development of the rat alveolar bone drilling modeling experiment.
[0024] Further as shown in Figure 4 , another embodiment of the cutting drill in the present embodiment is disclosed, in which the cutting drill also adopts the form of a ball drill, and the cutter head is installed and fixed in a plug-in fitting manner.
[0025] Further as shown in Figure 5 , another embodiment of the cutting drill in the present embodiment is disclosed, in which the cutting drill also adopts the form of a ball drill, and the cutter head is installed and fixed in a plug-in fitting manner.
[0026] The above examples are only one of the preferred specific examples of the present application, and the usual changes and replacements made by those skilled in the art within the scope of the technical scheme of the present application are all included in the protection scope of the present application.
Claims
1. An auxiliary device for preparing a rat periodontal bone defect model, comprising a frame, characterized in that: The frame is provided with several positioning pins for installation and fixation. A sliding beam is provided on the frame along its width. A sliding positioning component is provided on the sliding beam. The positioning component includes two positioning arms connected in a V-shape. One of the positioning arms is provided with a sliding groove along its length. The positioning component slides and engages with the sliding beam through the sliding groove. The frame is also provided with a limiting beam. A limiting plate is slidably provided on the limiting beam. A connecting ball is rotatably provided on the limiting plate. A mating hole is provided on the connecting ball. A drill is fitted into the mating hole. A negative pressure device for suctioning out bone fragments is connected to the drill.
2. The auxiliary device for preparing a rat periodontal bone defect model according to claim 1, characterized in that: The positioning arm of the positioning component is provided with several locking grooves at intervals on its outer wall.
3. The auxiliary device for preparing a rat periodontal bone defect model according to claim 2, characterized in that: The positioning arm has a notch in its sliding groove.
4. The auxiliary device for preparing a rat periodontal bone defect model according to claim 1, characterized in that: The output shaft of the drill is connected to a cutting head, and a depth limiting sleeve is threaded onto the drill, which is fitted over the cutting head.
5. The auxiliary device for preparing a rat periodontal bone defect model according to claim 4, characterized in that: The cutting head includes a positioning drill and a cutting drill. The positioning drill is connected to the center of the drill output shaft, the cutting drill is arranged circumferentially along the positioning drill, and the depth limiting sleeve is fitted over the cutting drill.