CN113951969B - Bone surface forming grinding drill, bone surface grinding file instrument and patella trimming forming instrument - Google Patents
Bone surface forming grinding drill, bone surface grinding file instrument and patella trimming forming instrument Download PDFInfo
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- CN113951969B CN113951969B CN202111200070.8A CN202111200070A CN113951969B CN 113951969 B CN113951969 B CN 113951969B CN 202111200070 A CN202111200070 A CN 202111200070A CN 113951969 B CN113951969 B CN 113951969B
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 103
- 210000004417 patella Anatomy 0.000 title claims abstract description 87
- 238000000227 grinding Methods 0.000 title claims abstract description 59
- 238000009966 trimming Methods 0.000 title abstract description 6
- 238000005520 cutting process Methods 0.000 claims abstract description 42
- 208000010392 Bone Fractures Diseases 0.000 claims abstract description 24
- 238000007493 shaping process Methods 0.000 claims description 26
- 206010006514 bruxism Diseases 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 208000006670 Multiple fractures Diseases 0.000 abstract description 10
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 230000006378 damage Effects 0.000 description 4
- 208000027418 Wounds and injury Diseases 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 210000000629 knee joint Anatomy 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 206010005963 Bone formation increased Diseases 0.000 description 1
- 206010065687 Bone loss Diseases 0.000 description 1
- 206010007710 Cartilage injury Diseases 0.000 description 1
- 206010060820 Joint injury Diseases 0.000 description 1
- 241000283984 Rodentia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 206010020718 hyperplasia Diseases 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
- A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1635—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for grafts, harvesting or transplants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1659—Surgical rasps, files, planes, or scrapers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
- A61B17/1675—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the knee
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B2017/1602—Mills
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B2017/564—Methods for bone or joint treatment
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- Health & Medical Sciences (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
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- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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Abstract
The invention discloses a bone surface forming abrasive drill, a bone surface abrasive file instrument and a patella trimming forming instrument, which belong to the technical field of orthopedic surgical instruments. The broken bones generated by the bone surface forming abrasive drill during grinding of the bone surface can directly fall into the broken bone cavity, so that the broken bones are more convenient to collect, and the broken bones generated during grinding of the bone surface do not need to fall into the broken bone cavity through the first fan-shaped base surface and the bone cutting surface, so that the first fan-shaped base surface and the bone cutting surface are not affected, the first fan-shaped base surface is not easy to wear, the smoothness of the bone cutting surface can be maintained, and the bone surface forming abrasive drill is suitable for surface finishing of various bones such as patella and the like.
Description
Technical Field
The invention relates to the technical field of orthopedic surgical instruments, in particular to a bone surface forming grinding drill, a bone surface grinding file instrument and a patella trimming forming instrument.
Background
In the case of patella injury in knee joint injury replacement, there are two general methods for treatment in clinical operation: patella prosthesis replacement approach and non-standard manual treatment approach.
The replacement mode of the patella prosthesis refers to that under the condition of patella injury, cartilage injury or peripheral hyperosteogeny, the surface of the patella is resected under a power device in a surgical mode, and the patella prosthesis of corresponding model is replaced and installed.
In the clinical operation of knee joint, the operator can repair the external shape of the knee joint manually by using non-standard instruments such as rongeur, bone file, bone chisel, etc. under the condition of patella injury or surrounding tissue hyperplasia.
The inventor finds that in the prior art, the following problems exist in the treatment process of patella or other bones through bone surface forming grinding drill: the broken bone generated by the conventional bone surface forming abrasive drill during grinding of the bone is easy to remain between the surface of the bone surface forming abrasive drill and the cutting surface of the bone, the surface of the bone surface forming abrasive drill is easy to wear, and the smoothness of the cutting surface of the bone cannot be maintained.
Disclosure of Invention
The invention aims to solve the technical problem of providing a bone surface forming abrasive drill, a bone surface abrasive file instrument and a patella trimming forming instrument which are not easy to abrade the surface of a bone surface forming abrasive drill and can maintain the smoothness of a cutting surface of a bone.
In order to solve the technical problems, the invention provides the following technical scheme:
in one aspect, a bone surface forming abrasive drill is provided, the bone surface forming abrasive drill includes a power instrument connection portion and a cutting portion, the cutting portion includes at least two radially extending first fan-shaped bases, the first fan-shaped bases are provided with radially arranged grinding teeth, and a broken bone cavity is formed between adjacent first fan-shaped bases.
Further, a guide part matched with a positioning ring on the bone surface rasping instrument is arranged between the power instrument connecting part and the cutting part, and the outer diameter of the guide part is matched with the inner diameter of the positioning ring.
Further, the guide part comprises at least two second fan-shaped bases extending along the radial direction, and the first fan-shaped bases are positioned on the second fan-shaped bases;
and/or the upper end of the guide part is provided with a blocking surface matched with the upper end surface of the positioning ring, and the diameter of the blocking surface is larger than that of the positioning ring;
and/or, the outer diameter of the cutting part is smaller than the outer diameter of the guiding part.
Further, the grinding teeth are arranged on the front edge of the first fan-shaped base in the rotating direction;
and/or the grinding surface of the bone surface forming grinding drill is an inner arc grinding surface;
and/or at least two grinding teeth on each first fan-shaped base are arranged at intervals;
and/or the cross section of the grinding tooth is triangular, and the included angle between the bottom side of the triangle and the side in front of the rotation direction is a right angle.
On the other hand, a bone surface grinding and filing apparatus is provided, which comprises the bone surface forming grinding drill.
In yet another aspect, a patella shaping apparatus is provided, including a patella holder for laterally clamping a patella, the patella holder having a burr guide and a support for supporting the patella, the burr guide having the above-described bone surface shaping burr.
Further, the patella fixator comprises a pair of forceps bodies hinged at the middle part, and each pair of forceps bodies comprises a forceps head and a forceps handle.
Further, a base is arranged at the hinge shaft of the pair of forceps bodies, and the grinding drill guide comprises a fixed connection part fixedly connected to the base and a positioning ring positioned in front of the fixed connection part and used for positioning the bone surface forming grinding drill.
Further, the grinding drill guide is provided with an angle adjusting device, the angle adjusting device comprises a gear fixedly arranged on the base, the fixed connection part is an annular fixed connection part which is sleeved on the gear and can rotate around the gear, an opening is arranged at the rear of the annular fixed connection part, and locking teeth which can move forwards and backwards and can be meshed with the gear are arranged in the opening.
Further, the angle adjusting device further comprises a mounting table positioned behind the opening, a transverse through hole and a vertical mounting hole perpendicular to the transverse through hole are arranged in the mounting table, a linear handle capable of moving forwards and backwards is arranged in the transverse through hole in a penetrating mode, the locking tooth is arranged in front of the middle of the linear handle, a guide post matched with the vertical mounting hole is arranged behind the middle of the linear handle, and a spring is arranged behind the guide post in the vertical mounting hole; the middle part of the straight-line handle is provided with a vertical through hole, the vertical through hole is a long round hole extending in the front-back direction, and a fixing pin is arranged in the long round hole in a penetrating way.
Further, a knob which is in driving connection with the bearing piece and can adjust the height of the bearing piece is arranged at the front part of the base station, and scale marks for displaying the height of the bearing piece are arranged at the front part of the base station;
and/or the clamp head is an inward-bending arc;
and/or the inner side of the clamp head is provided with convex teeth;
and/or a self-locking switch is arranged on the clamp handle of one clamp body, the tail end of the self-locking switch is connected with a pushing piece, and the tail end of the pushing piece is used for extruding the outer surface of the clamp head of the other clamp body;
and/or torsion springs which enable the clamp handles to keep a normally open state are arranged at the hinge shafts of the pair of clamp bodies.
Further, the support piece comprises a support piece main body, a pair of support rods which are parallel to each other and extend forwards are arranged at the front end of the support piece main body, and the knob is in driving connection with the support piece main body.
The invention has the following beneficial effects:
the bone surface forming grinding drill comprises a power instrument connecting part and a cutting part, wherein the cutting part comprises at least two first fan-shaped bases extending along the radial direction, and the first fan-shaped bases are provided with grinding teeth which are arranged along the radial direction, so that broken bone cavities are formed between the adjacent first fan-shaped bases, broken bones generated by the grinding teeth during grinding of the bone surfaces can directly fall into the broken bone cavities, collection is more convenient, broken bones generated during grinding of the bone surfaces do not need to fall into the broken bone cavities again through the surfaces of the first fan-shaped bases and the bone cutting surfaces, the surfaces of the first fan-shaped bases are not affected, the surfaces of the first fan-shaped bases are not easy to wear, and the smoothness of the bone cutting surfaces can be maintained. The invention is not easy to abrade the surface of the bone surface forming grinding drill, and can maintain the smoothness of the cutting surface of the bone.
Drawings
FIG. 1 is an elevation view of a bone face molding abrasive drill of the present invention;
FIG. 2 is a perspective view of a bone face molding abrasive drill of the present invention;
FIG. 3 is a schematic view of the cross section of a grinding tooth in the bone face forming abrasive drill of the present invention;
FIG. 4 is a schematic view of the overall structure of the patella shaping apparatus of the present invention;
FIG. 5 is a schematic view of the combination of the patella fixator and the support in one direction in the patella shaping apparatus of the present invention;
FIG. 6 is a schematic view of the combination of the patella fixator and the support in another orientation in the patella shaping apparatus of the present invention;
FIG. 7 is a schematic view of the milling guide and the angle adjustment device in the patella shaping apparatus according to the present invention, wherein (a) is a front view and (b) is a front cross-sectional view;
fig. 8 is a schematic diagram of the relationship between the grinding guide and the angle adjusting device and the gear in the patella shaping apparatus according to the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
In one aspect, the present invention provides a bone face forming burr, as shown in fig. 1-3, the bone face forming burr 3 includes a power tool coupling portion 31 and a cutting portion 33, the cutting portion 33 including at least two radially extending first fan-shaped bases 331, the first fan-shaped bases 331 being provided with radially arranged grinding teeth 3311, thereby forming a bone crushing cavity 332 between adjacent first fan-shaped bases 331. In the present embodiment, the number of the first fan-shaped bases 331 is three, it will be appreciated that in other realizable embodiments, the number of the first fan-shaped bases 331 may be two or four, and the present embodiment is not limited thereto.
The bone surface forming grinding drill comprises a power instrument connecting part and a cutting part, wherein the cutting part comprises at least two first fan-shaped bases extending along the radial direction, and the first fan-shaped bases are provided with grinding teeth which are arranged along the radial direction, so that broken bone cavities are formed between the adjacent first fan-shaped bases, broken bones generated by the grinding teeth during grinding of the bone surfaces can directly fall into the broken bone cavities, collection is more convenient, broken bones generated during grinding of the bone surfaces do not need to fall into the broken bone cavities again through the surfaces of the first fan-shaped bases and the bone cutting surfaces, the surfaces of the first fan-shaped bases are not affected, the surfaces of the first fan-shaped bases are not easy to wear, and the smoothness of the bone cutting surfaces can be maintained. The invention is not easy to abrade the surface of the bone surface forming grinding drill, and can maintain the smoothness of the cutting surface of the bone.
In order to facilitate the positioning of the bone surface forming abrasive drill, a guide part 32 which is used for being matched with a positioning ring 42 on the bone surface abrasive filing instrument can be arranged between the power instrument connecting part 31 and the cutting part 33, the power instrument connecting part 31, the guide part 32 and the cutting part 33 can be sequentially connected from top to bottom (i.e. from right to left in fig. 1), the outer diameter of the guide part 32 is matched with the inner diameter of the positioning ring 42, and the bone surface forming abrasive drill can be matched and fixed; specifically, the guide portion 32 may have a cylindrical shape, and may be used to stably grind the bone surface by the cylindrical guide action in cooperation with the bone surface forming burr 3.
The guide portion 32 may include at least two second fan-shaped bases 321 extending in a radial direction, and the first fan-shaped bases 331 are positioned on the second fan-shaped bases 321, so that the size of the crushed bone cavities 332 can be increased. In the embodiment shown in the drawings, the cutting portion 33 includes three first fan-shaped bases 331 extending in the radial direction, and the guiding portion 32 includes three second fan-shaped bases 321 extending in the radial direction, and both the cutting portion 33 and the guiding portion 32 are in a three-leaf fan shape. The number of the second fan-shaped bases 321 may specifically correspond to the number of the first fan-shaped bases 331.
As shown in fig. 1-2, to limit the grinding depth, the upper end of the guide portion 32 may be provided with a blocking surface 322 that mates with the upper end surface of the retainer ring 42, the blocking surface 322 having a diameter greater than the diameter of the retainer ring 42. The outer diameter of the cutting portion 33 may be smaller than the outer diameter (i.e., the reducing structure) of the guide portion 32, for example, the ratio of the outer diameter of the cutting portion 33 (i.e., the outer diameter of the first fan-shaped base 331) to the outer diameter of the guide portion 32 (i.e., the outer diameter of the second fan-shaped base 321) may be 0.6-0.8, such as 0.67, 0.7, 0.75, etc., to avoid the guide portion 32 and to improve the overall strength of the bone surface shaping abrasive drill 3. The length of the second fan-shaped base 321 (the length in the left-right direction in fig. 1) may be 2-3 times the length of the first fan-shaped base 331, and the overall strength of the bone plate forming burr 3 is optimal.
Preferably, the front edge of the first fan-shaped base 331 in the rotation direction is provided with the grinding teeth 3311, so that the broken bones can be more conveniently collected. The grinding surface of the bone-surface forming grinding drill 3 (i.e., the left side surface of the cutting portion 33 in fig. 1) is preferably an inner arc-shaped grinding surface (see fig. 1-2) so as to be suitable for patella finishing, and to be capable of finishing a complete patella arc surface structure. The grinding teeth 3311 on each first fan-shaped base 331 may be at least two and arranged at intervals, and the arrangement at intervals can greatly reduce the rotation resistance of the cutting portion 33. In the embodiment shown, the number of grinding teeth 3311 on the first fan-shaped base 331 is two. As shown in fig. 3, the cross-sectional shape of the grinding tooth 3311 is preferably a triangle, and the angle between the base of the triangle and the front side in the rotation direction is preferably a right angle, so that the grinding efficiency and the strength of the grinding tooth can be both considered, and the patella can be ground conveniently.
On the other hand, a bone surface grinding and filing device in joint replacement is provided, which comprises the bone surface forming grinding and drilling device. The structure of the bone surface forming grinding drill is the same as that of the above, so that the description is omitted here.
The bone surface forming grinding drill in the bone surface grinding and filing device in joint replacement comprises a power device connecting part and a cutting part, wherein the cutting part comprises at least two first fan-shaped bases extending along the radial direction, the first fan-shaped bases are provided with grinding teeth which are arranged along the radial direction, so that broken bone cavities are formed between the adjacent first fan-shaped bases, broken bones generated by the grinding teeth during grinding of bone surfaces can directly fall into the broken bone cavities, collection is more convenient, broken bones generated during grinding of the bone surfaces do not need to fall into the broken bone cavities again through the first fan-shaped base surfaces and the bone cutting surfaces, the first fan-shaped base surfaces and the bone cutting surfaces are not affected, the first fan-shaped base surfaces are not easy to wear, and the smoothness of the bone cutting surfaces can be maintained. The invention is not easy to abrade the surface of the bone surface forming grinding drill, can maintain the smoothness of the cutting surface of the bone, and is suitable for surface finishing of various bones such as patella, femur and the like.
In yet another aspect, as shown in fig. 4-8, a patella shaping apparatus is provided, including a patella holder 1 for holding a patella from a side, where the patella holder 1 is provided with a burr guide 4 and a support 2 for carrying the patella, and where the burr guide 4 is provided with the above-mentioned bone surface shaping burr 3. The structure of the bone surface forming grinding drill is the same as that of the above, so that the description is omitted here.
When the patella polishing device is used, firstly, the supporting piece 2 is placed on one side surface (namely the outer surface) of the patella to be polished, the patella is borne on the supporting piece 2, then the patella to be polished is fixedly clamped from the side by using the patella fixer 1, and finally the other side surface (namely the inner surface) of the patella to be polished is polished by using the bone surface forming abrasive drill 3 on the abrasive drill guide 4.
The inventor finds that the patella prosthesis replacement mode in the prior art has great damage to patients and needs to resect a large amount of patella, which is not the optimal choice from the aspects of patient recovery and bone loss; the nonstandard manual treatment mode has larger nonstandard property, cannot standardize the excellent repairing condition, cannot accurately repair and mold the patella, and has good and bad conditions.
The patella shaping apparatus of the invention comprises a patella fixer for clamping the patella from the side, which can be convenient for clamping and fixing the patella to be polished; the patella fixer is provided with the grinding drill guide and the bearing piece for bearing the patella, the grinding drill guide is provided with the bone surface forming grinding drill, the grinding drill guide can be used for conveniently positioning the bone surface forming grinding drill, and the bearing piece can be used for conveniently bearing the patella to be polished; compared with the prior art of patella prosthesis replacement mode and a nonstandard manual processing mode, the patella prosthesis replacement device has the advantages that a patient can accurately and quickly trim and mold the patella to be polished, and the bone quantity of the patient is reserved in the maximum sense. The patella trimming and shaping instrument disclosed by the invention does not need to cut a large number of patella, can trim and shape the patella accurately, is not easy to abrade the surface of a bone surface shaping abrasive drill, and can keep the smoothness of a bone cutting surface.
As shown in fig. 4 to 6, in order to facilitate the clamping and fixing of the patella to be polished, the patella fixator 1 is preferably in the form of a clamping jaw, that is, includes a pair of jaw bodies 11, 11 'hinged at the middle, and the pair of jaw bodies 11, 11' each include a jaw head 111, 111 'and a jaw handle 112, 112', so that the patella to be polished is convenient to use, labor-saving and easy to clamp and fix. In this case, the pair of handles 112, 112' of the forceps bodies 11, 11' are held and driven, so that the forceps heads 111, 111' clamp and fix the patella to be polished.
As shown in fig. 4 and 7-8, in order to facilitate positioning of the bone surface forming burr 3, a base 113 may be provided at the hinge shaft of the pair of forceps 11, 11', and the burr guide 4 includes a fixed connection portion 41 fixedly connected to the base 113, and a positioning ring 42 for positioning the bone surface forming burr 3 in front of the fixed connection portion 41.
As shown in fig. 7 to 8, in order to trim and mold the inner surface of the patella to be polished more precisely, the grinding drill guide 4 may be provided with an angle adjusting device, and the angle adjusting device may take various structural forms which are easily thought by those skilled in the art, and for convenience of implementation, the following structural forms are preferably adopted in the present invention:
the angle adjusting device comprises a gear 43 fixedly arranged on a base 113, the fixed connection part 41 is an annular fixed connection part sleeved on the gear 43 and capable of rotating around the gear 43, an opening 411 is arranged at the rear of the annular fixed connection part, and locking teeth 451 capable of moving forwards and backwards and meshed with the gear 43 are arranged in the opening 411.
In order to facilitate the driving of the locking tooth 451 to move back and forth, the angle adjusting device may further include a mounting table 44 located at the rear of the opening 411, a transverse through hole 441 and a vertical mounting hole 442 perpendicular to the transverse through hole 441 are provided in the mounting table 44, the transverse through hole 441 is internally provided with a linear handle 45 capable of moving back and forth, the locking tooth 451 is provided in front of the middle of the linear handle 45, a guide post 452 matched with the vertical mounting hole 442 is provided at the rear of the middle of the linear handle 45, and a spring 46 is provided at the rear of the guide post 452 in the vertical mounting hole 442 to push the guide post 452. For positioning the linear handle 45, a vertical through hole 453 may be provided in the middle of the linear handle 45, the vertical through hole 453 is a oblong hole extending in the front-back direction, and a fixing pin 454 is provided in the oblong hole in a penetrating manner. In the embodiment shown in the figures, the gear 43 may be disposed below the knob 1131, making the overall structure more compact.
When the left and right directions of the grinding drill guide 4 need to be adjusted in operation, the linear handle 45 is pressed backwards, the guide column 452 of the linear handle 45 moves backwards and gradually compresses the spring 46 in the vertical mounting hole 442 until the locking tooth 451 in front of the middle part of the linear handle 45 is separated from the gear 43 on the base 113, and unlocking is completed; at this time, the fixed connection part 41 of the drill grinding guide 4 is rotated, the fixed connection part 41 is axially and slightly adjusted by taking the gear 43 on the base 113 as a rotation center, the linear handle 45 is released after the adjustment is finished, and the linear handle 45 moves forward under the tension of the spring 46, so that the locking tooth 451 in front of the middle part of the linear handle 45 is re-meshed with the gear 43 on the base 113, and is further re-locked. The angle adjustment device can adjust the limit adjustment angles of the left and right sides by setting the number of teeth on the gear 43 according to practical applications. In this embodiment, the above-mentioned angle adjustment device can accomplish each 55 degrees angle adjustment of left and right sides, can make fine adjustment to the patella can not very accurate centre gripping by the patella fixer under the condition in centre, can cooperate the shaping of bone face to grind and bore 3 and accomplish more accurate shaping restoration of patella internal surface.
As shown in fig. 4 to 6, the front portion of the base 113 may be provided with a knob 1131 which is drivingly connected to the support 2 and can adjust the height of the support 2, and the front portion of the base 113 is provided with graduation marks 1132 for displaying the height of the support 2. During the use, before the patella fixer centre gripping or the centre gripping wait to polish the in-process of patella, can be through knob 1131 and the accurate regulation support piece 2 height of scale mark 1132, guarantee that support piece 2 is stable bears the patella of waiting to polish. As to how the knob 1131 drives the connection support 2, conventional techniques in the art may be adopted, for example, a screw is fixed under the knob, and a vertically moving sleeve is disposed on the support and is in threaded engagement with the screw.
For stable clamping of the patella to be sanded, the forceps heads 111, 111' are preferably curved inwardly. The inner sides of the forceps heads 111, 111' can be provided with convex teeth 1112, which can more firmly clamp the patella to be polished.
When the pair of forceps bodies 11, 11 'clamp the patella to be polished, the opening angle of the forceps heads 111, 111' can be preferably locked to reduce manual operation, so that the forceps handle of one of the forceps bodies is preferably provided with a self-locking switch, the tail end of the self-locking switch is connected with a push plate (not shown), and the tail end of the push plate is used for extruding the outer surface of the forceps head of the other forceps body, so that the other forceps body is locked. In the embodiment shown in the drawings, the grip handle 112 of the left end grip body 11 is provided with a self-locking switch 1121, and at this time, the self-locking switch 1121 is in a locked state when in the front, and the self-locking switch 1121 is in an unlocked state when in the rear.
A torsion spring 114 for keeping the handles 112, 112' in a normally open state can be arranged at the hinge shaft of the pair of pliers bodies 11, 11', so that the handles 112, 112' can be kept in a normally open state, and the use is convenient.
The support 2 may take various forms as will be readily apparent to those skilled in the art, for example the support may be a support plate; in view of the shape of the patella, for achieving a better bearing effect, the bearing 2 preferably includes a bearing body 21, and the front end of the bearing body 21 is provided with a pair of support rods 22 extending in parallel with each other and forward, and the knob 1131 is driven to connect with the bearing body 21.
In the invention, the grinding surface of the bone surface forming grinding drill 3 is an inner arc grinding surface, preferably a spherical cambered surface, so that the cambered surface is formed in the cutting process, and a more complete patella cambered surface structure can be better trimmed. The bone surface forming abrasive drill 3 can be divided into different types according to the sizes of the patella of different people, and the bone surface forming abrasive drill of different types can be flexibly selected according to the needs during use.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (11)
1. The bone surface forming abrasive drill is characterized in that the bone surface forming abrasive drill (3) comprises a power instrument connecting part (31) and a cutting part (33), the cutting part (33) comprises at least two first fan-shaped bases (331) extending along the radial direction, and the first fan-shaped bases (331) are provided with grinding teeth (3311) which are arranged along the radial direction, so that broken bone cavities (332) are formed between the adjacent first fan-shaped bases (331);
the front edge of the first fan-shaped base (331) in the rotating direction is provided with the grinding teeth (3311);
the grinding surface of the bone surface forming grinding drill (3) is an inner arc grinding surface;
the number of grinding teeth (3311) on each first fan-shaped base (331) is at least two and the grinding teeth are distributed at intervals;
the cross-sectional shape of the grinding tooth (3311) is a triangle, and the angle between the base of the triangle and the side in front of the rotation direction is a right angle.
2. The bone face shaping abrasive drill according to claim 1, characterized in that a guiding part (32) for matching with a locating ring (42) on the bone face abrasive filing apparatus is arranged between the power apparatus connecting part (31) and the cutting part (33), and the outer diameter of the guiding part (32) is matched with the inner diameter of the locating ring (42).
3. The bone face shaping abrasive drill of claim 2, characterized in that the guide (32) comprises at least two radially extending second fan-shaped bases (321), the first fan-shaped bases (331) being located on the second fan-shaped bases (321);
and/or, the upper end of the guide part (32) is provided with a blocking surface (322) matched with the upper end surface of the positioning ring (42), and the diameter of the blocking surface (322) is larger than that of the positioning ring (42);
and/or the outer diameter of the cutting part (33) is smaller than the outer diameter of the guiding part (32).
4. A bone surface rasping instrument comprising the bone surface forming rasp of any one of claims 1-3.
5. A patella shaping apparatus, characterized in that it comprises a patella fixer (1) for holding a patella from the side, wherein the patella fixer (1) is provided with a grinding drill guide (4) and a support (2) for carrying the patella, and the grinding drill guide (4) is provided with the bone surface shaping grinding drill (3) according to any one of claims 1-3.
6. The patella shaping instrument according to claim 5, wherein the patella fixator (1) comprises a pair of forceps bodies (11, 11 ') hinged in the middle, the forceps bodies (11, 11') each comprising a forceps head (111, 111 ') and a forceps handle (112, 112').
7. The patella finishing shaping instrument according to claim 6, wherein a base (113) is provided at the hinge shaft of the pair of forceps bodies (11, 11'), the burr guide (4) includes a fixed connection portion (41) fixedly connected to the base (113), and a positioning ring (42) for positioning the bone surface shaping burr (3) in front of the fixed connection portion (41).
8. The patella finishing shaping apparatus according to claim 7, wherein the grinding drill guide (4) is provided with an angle adjusting device, the angle adjusting device comprises a gear (43) fixedly arranged on the base (113), the fixed connecting part (41) is an annular fixed connecting part sleeved on the gear (43) and capable of rotating around the gear (43), an opening (411) is arranged at the rear of the annular fixed connecting part, and locking teeth (451) capable of moving forwards and backwards and meshed with the gear (43) are arranged in the opening (411).
9. The patella shaping apparatus according to claim 8, wherein the angle adjusting device further comprises a mounting table (44) located at the rear of the opening (411), a transverse through hole (441) and a vertical mounting hole (442) perpendicular to the transverse through hole (441) are arranged in the mounting table (44), a linear handle (45) capable of moving forward and backward is arranged in the transverse through hole (441) in a penetrating manner, the locking tooth (451) is arranged at the front of the middle of the linear handle (45), a guide post (452) matched with the vertical mounting hole (442) is arranged at the rear of the middle of the linear handle (45), and a spring (46) is arranged at the rear of the guide post (452) in the vertical mounting hole (442); the middle part of the straight handle (45) is provided with a vertical through hole (453), the vertical through hole (453) is a long round hole extending in the front-back direction, and a fixing pin (454) is arranged in the long round hole in a penetrating mode.
10. The patella shaping apparatus according to claim 7, wherein a knob (1131) that is drivingly connected to the support (2) and is capable of adjusting the height of the support (2) is provided at the front of the base (113), and a scale line (1132) for displaying the height of the support (2) is provided at the front of the base (113);
and/or the binding clip (111, 111') is curved inwards;
and/or, the inner side of the clamp head (111, 111') is provided with convex teeth (1112);
and/or, a self-locking switch (1121) is arranged on the clamp handle (112) of one clamp body (11), the tail end of the self-locking switch (1121) is connected with a pushing piece, and the tail end of the pushing piece is used for extruding the outer surface of the clamp head (111 ') of the other clamp body (11');
and/or torsion springs (114) which enable the clamp handles (112, 112 ') to keep a normally open state are arranged at the hinge shafts of the pair of clamp bodies (11, 11').
11. The patella shaping apparatus according to claim 10, wherein the bearing member (2) includes a bearing member body (21), a pair of support rods (22) extending forward and parallel to each other are provided at a front end of the bearing member body (21), and the knob (1131) is drivingly connected to the bearing member body (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200070.8A CN113951969B (en) | 2021-10-14 | 2021-10-14 | Bone surface forming grinding drill, bone surface grinding file instrument and patella trimming forming instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111200070.8A CN113951969B (en) | 2021-10-14 | 2021-10-14 | Bone surface forming grinding drill, bone surface grinding file instrument and patella trimming forming instrument |
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| Publication Number | Publication Date |
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| CN113951969A CN113951969A (en) | 2022-01-21 |
| CN113951969B true CN113951969B (en) | 2023-12-08 |
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| CN202111200070.8A Active CN113951969B (en) | 2021-10-14 | 2021-10-14 | Bone surface forming grinding drill, bone surface grinding file instrument and patella trimming forming instrument |
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| CN (1) | CN113951969B (en) |
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| CN113951969A (en) | 2022-01-21 |
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