CN-121987380-A - Bone defect modeling device and bone defect modeling system

Abstract

The embodiment of the application provides a bone defect modeling device and a bone defect modeling system, wherein the bone defect modeling device comprises a fixing mechanism and a positioning mechanism, the fixing mechanism is used for clamping an experimental animal limb, an operation window is formed in a first fixing plate to expose an operation area, the positioning mechanism is integrated with a guiding component capable of being adjusted in multiple dimensions, the guiding component is movably connected with an adjusting component, the adjusting component is used for adjusting and locking the position of the guiding component, so that fine adjustment of a drilling position, three-dimensional adaptation of a drilling angle and rigid locking after adjustment are realized, and a mechanical guide and depth limitation are formed on a drilling tool by a guiding channel formed by the positioning mechanism, so that accurate control of drilling depth is realized. The device abandons experience dependence of freehand operation, ensures three-dimensional consistency of bone defect experimental modeling through integrated three-dimensional fine adjustment, rigid locking, mechanical guiding and depth limiting, improves repeatability and standardization degree of modeling, and provides a unified model foundation for result evaluation of bone defect repair experiments.

Inventors

• WANG LIPING
• JIANG TAO

Assignees

• 杭州华迈医疗科技有限公司

Dates

Publication Date

20260508

Application Date

20260225

Claims (12)

1. 1. A bone defect modeling apparatus, comprising: The fixing mechanism comprises a first fixing plate and a second fixing plate which are oppositely arranged, the first fixing plate and the second fixing plate are movably arranged along the directions of approaching and separating from each other, and an operation window is formed in the first fixing plate; Positioning mechanism, including guiding component and adjusting part, guiding component is located first fixed plate deviates from second fixed plate one side, guiding component swing joint in adjusting part, adjusting part is used for adjusting and locking guiding component's position, guiding channel has been seted up to guiding component, guiding channel is located operating window deviates from one side of second fixed plate, guiding channel with operating window is used for through drilling tool, guiding channel is used for prescribing a limit to drilling depth and drilling angle of drilling tool.
2. 2. The bone defect modeling device of claim 1, wherein the adjusting assembly comprises an adjusting rod, a stand column and a swinging clamping piece, the adjusting rod is movably arranged along the axial direction of the adjusting rod, the stand column is connected to one end of the adjusting rod, which faces the first fixing plate, the axial direction of the stand column is intersected with the axial direction of the adjusting rod, the swinging clamping piece is rotatably connected to the stand column, the swinging clamping piece is arranged in a swinging manner around the axial direction of the stand column, and the guiding assembly is connected to one side, far away from the stand column, of the swinging clamping piece.
3. 3. The bone defect modeling device of claim 2, wherein the guide assembly comprises a mounting barrel and a guide sleeve, the guide sleeve is detachably arranged on the mounting barrel, the guide sleeve is provided with the guide channel, a ball head is arranged on the outer side of the mounting barrel, and the mounting barrel is rotatably connected with the swing clamping piece through the ball head.
4. 4. The bone defect modeling device of claim 3, wherein the swing clamping member comprises a first clamping piece and a second clamping piece which are oppositely arranged, the first clamping piece and the second clamping piece both comprise arc sections and straight sections, the arc sections of the first clamping piece and the second clamping piece encircle two sides in the radial direction of the upright, the straight sections are provided with adjusting holes, the ball head is located between the first clamping piece and the second clamping piece, and part of the ball head extends into the adjusting holes of the first clamping piece and the second clamping piece.
5. 5. The bone defect modeling device of claim 4, wherein the straight section is further provided with a locking bolt, the locking bolt being located between the adjustment hole and the arcuate section, the locking bolt being used to lock the first clamping tab and the second clamping tab.
6. 6. The bone defect modeling device of claim 2, wherein the fixation mechanism comprises a first arm and a second arm, the first arm and the second arm being hinged, an end of the first arm being connected to the first fixation plate, an end of the second arm being connected to the second fixation plate, the adjustment assembly further comprising an adjustment bracket and a locking bracket, the adjustment bar being connected to the first arm via the adjustment bracket and the locking bracket, the adjustment bracket being provided with an adjustment member for adjusting a position of the adjustment bar, the locking bracket being provided with a locking member for locking the adjustment bar.
7. 7. The bone defect modeling device of claim 6, wherein the adjustment rod extends through the adjustment support, a rack is arranged on the adjustment rod, the rack is located in the working cavity of the adjustment support, the adjustment member comprises a first knob and a gear, the gear is located in the working cavity and meshed with the rack, the first knob extends out of the adjustment support to the working cavity and is connected with the gear, and the first knob and the gear are synchronously and rotatably arranged.
8. 8. The bone defect modeling device of claim 6, wherein the fixation mechanism further comprises a support post and a support rail, the support rail being coupled to the support post by a connector that is movably disposed relative to the support post, the support rail being movably disposed relative to the connector, the second arm being coupled to the support rail.
9. 9. The bone defect modeling device of claim 8, wherein the connection base is provided with a first channel, a second channel and a third channel, the first channel and the second channel penetrate through the connection base along the radial direction of the connection base, the third channel penetrates through the connection base along the axial direction of the connection base, the extending directions of the first channel and the second channel intersect, the support upright penetrates through the first channel, the support cross rod penetrates through the second channel, the third channel comprises a first opening and a second opening which are respectively positioned at two ends of the connection base along the axial direction, the first opening is positioned at one side of the first channel away from the second channel, and the second opening is positioned at one side of the second channel away from the first channel; The fixing mechanism further comprises a first locking part and a second locking part, wherein the first locking part is located at the first opening, the first locking part is movably arranged along the direction of approaching or separating from the supporting upright post so that the supporting upright post is provided with a first locking state and a first free state, the first locking part is abutted to the supporting upright post in the first locking state, the connecting seat is movably arranged relative to the supporting upright post in the first free state, the second locking part is movably arranged along the direction of approaching or separating from the supporting transverse rod so that the supporting transverse rod is provided with a second locking state and a second free state, the second locking part is abutted to the supporting transverse rod in the second locking state, and the supporting transverse rod is movably arranged relative to the connecting seat in the second free state.
10. 10. The bone defect modeling device of claim 9, wherein the first locking portion comprises a first locking knob and a first locking ring, the first locking ring is located in the first channel and sleeved outside the support post, the first locking ring is in threaded connection with the first locking knob through the first opening, and/or the second locking portion comprises a second locking knob and a second locking ring, the second locking ring is located in the second channel and sleeved outside the support cross bar, and the second locking ring is in threaded connection with the second locking knob through the second opening.
11. 11. A bone defect modeling system, comprising the bone defect modeling apparatus of any of claims 1-10, the bone defect modeling system comprising a drilling tool, the drilling tool comprising a drill bit and a stop collar, the stop collar being sleeved outside the drill bit, the drill bit being configured to penetrate the guide channel and the operating window, the stop collar being configured to abut an end of the guide assembly facing away from the first fixation plate to define a drilling depth of the drill bit.
12. 12. The bone defect modeling system of claim 11, wherein the bone defect modeling device further comprises a centering tube, the centering tube is configured to be inserted into the guide channel, a scale is provided on a wall of the centering tube, and a spherical lens is provided at one end of the centering tube.

Description

Bone defect modeling device and bone defect modeling system Technical Field The application relates to the technical field of medical equipment, in particular to a bone defect modeling device and a bone defect modeling system. Background In the field of experimental research and preclinical modeling related to bone defects, the accuracy of drilling operation directly determines the dimensional consistency of a bone defect model and the reliability of experimental data, which are key preconditions for guaranteeing the effectiveness of subsequent research results, and how to improve the overall accuracy of drilling operation becomes a problem to be solved urgently in the field of current bone defect modeling. Disclosure of Invention The embodiment of the application provides a bone defect modeling device and a bone defect modeling system, aiming at improving the accuracy of drilling positions. The embodiment of the first aspect of the application provides a bone defect modeling device, which comprises a fixing mechanism and a positioning mechanism, wherein the fixing mechanism comprises a first fixing plate and a second fixing plate which are oppositely arranged, the first fixing plate and the second fixing plate are movably arranged along the approaching and separating directions, an operation window is formed in the first fixing plate, the positioning mechanism comprises a guide component and an adjusting component, the guide component is positioned at one side of the first fixing plate, which is away from the second fixing plate, the guide component is movably connected with the adjusting component, the adjusting component is used for adjusting and locking the position of the guide component, the guide component is provided with a guide channel, the guide channel is positioned at one side of the operation window, which is away from the second fixing plate, the guide channel and the operation window are used for limiting the drilling depth and the drilling angle of a drilling tool through the drilling tool. According to the embodiment of the application, the adjusting component comprises an adjusting rod, a stand column and a swinging clamping piece, the adjusting rod is movably arranged along the axial direction of the adjusting rod, the stand column is connected to one end of the adjusting rod facing the first fixing plate, the axial direction of the stand column is intersected with the axial direction of the adjusting rod, the swinging clamping piece is rotatably connected to the stand column, the swinging clamping piece is arranged in a swinging way around the axial direction of the stand column, and the guiding component is connected to one side of the swinging clamping piece away from the stand column. According to the embodiment of the application, the guide assembly comprises the installation cylinder and the guide sleeve, the guide sleeve is detachably arranged on the installation cylinder, the guide sleeve is provided with the guide channel, the outer side of the installation cylinder is provided with the ball head, and the installation cylinder is rotatably connected with the swing clamping piece through the ball head. According to the embodiment of the application, the swing clamping piece comprises a first clamping piece and a second clamping piece which are oppositely arranged, the first clamping piece and the second clamping piece both comprise arc sections and straight sections, the arc sections of the first clamping piece and the second clamping piece encircle two radial sides of the upright post, the straight sections are provided with adjusting holes, the ball head is positioned between the first clamping piece and the second clamping piece, and part of the ball head stretches into the adjusting holes of the first clamping piece and the second clamping piece. According to the embodiment of the application, the straight section is further provided with a locking bolt, and the locking bolt is positioned between the adjusting hole and the arc-shaped section and used for locking the first clamping piece and the second clamping piece. According to an embodiment of the application, the fixing mechanism comprises a first arm part and a second arm part, the first arm part and the second arm part are hinged, the end part of the first arm part is connected with the first fixing plate, the end part of the second arm part is connected with the second fixing plate, the adjusting assembly further comprises an adjusting support and a locking support, the adjusting rod is connected with the first arm part through the adjusting support and the locking support, the adjusting support is provided with an adjusting piece for adjusting the position of the adjusting rod, and the locking support is provided with a locking piece for locking the adjusting rod. According to the embodiment of the application, the adjusting rod penetrates through the adjusting support, the rack is arranged on the adjusting rod and is