CN102379735B - Miniature condyle bone cutting device - Google Patents
Miniature condyle bone cutting device Download PDFInfo
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- CN102379735B CN102379735B CN 201010267769 CN201010267769A CN102379735B CN 102379735 B CN102379735 B CN 102379735B CN 201010267769 CN201010267769 CN 201010267769 CN 201010267769 A CN201010267769 A CN 201010267769A CN 102379735 B CN102379735 B CN 102379735B
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Abstract
A miniature condyle bone cutting device comprises a driving shaft (2), a gearbox (3), a positioning rod (4), a front condyle bone cutting knife (5), two distal bone cutting knives (6 and 7) and two rear condyle bone cutting knives (8 and 9). The driving shaft (2) is a power input shaft, power is transmitted to the front condyle bone cutting knife (5) via the gearbox (3), the two distal bone cutting knives (6 and 7) and the two rear condyle bone cutting knives (8 and 9) via the gearbox (3), and the positioning rod (4) is located at the front end of the gearbox (3). The miniature condyle bone cutting device breaks through a traditional design concept of knee joint bone cutting, traditional five-surface bone cutting is omitted, surgical instruments for total knee joints and the design of a knee joint prosthesis are more adaptive small-incision minimally invasive replacement technology, vertical bone cutting can be carried out from a distal femur of a human body to a proximal femur of the human body, due to the vertical bone cutting, exposure area can be greatly reduced, a surgical incision is reduced, surgical time is shortened, and sufferings of patients are relieved.
Description
Technical field
The present invention relates to a kind of knee joint Minimally Invasive Surgery apparatus, particularly condyle of femur cutting apparatus.
Background technology
At present, if client need displacement knee joint perhaps when knee joint place's installation prosthese, must be carried out the deep processing of shaping to condyle of femur, make it have specific shape, in order to coordinate installation with the prosthese that will use.In the prior art, usually need in operation, knee joint all be come out, again to condyle of femur far-end, preartis, postartis, front tiltedly, five faces that retread cut respectively, because these five faces are divided into five cuttings out, so the relative positional accuracy of five faces is very difficult identical consistent with the prosthese size dimension that matches with it, affects the operation quality and wastes operating time.for addressing this problem, Chinese invention patent: title: femur formation and cutting device, the patent No.: 200510086667.9 and United States Patent (USP): title: femur formation and cutting center, the patent No.: disclosed a kind of apparatus for femur is cut in 7641662, five of can once complete condyle of femur of this apparatus are deep, improved deep precision, reduced operating time, but in these two patents, although disclosed apparatus can once be completed condyle of femur five deep, but, deeply remain traditional five, need laterally walking of left and right when deep, therefore, operation needs otch large, knee joint exposes many, the deep power that needs is also large.Since coming out from the artificial full knee joint transposing technology, for condyle of femur deep be still so far five deep, therefore, the design of knee-joint prosthesis inboard is five faces always, causes the design of knee-joint prosthesis to be difficult to miniaturization.The little incision replacement technique of complete knee joint is more popular topic in recent years, has begun abroad to use.Little otch artificial full knee joint transposing technology has the minimizing soft-tissue trauma, reduces the advantages such as hemorrhage, minimizing pain, quickening rehabilitation speed.Along with the raising of total knee replacement technology, the operating theater instruments of complete knee joint and the design of knee-joint prosthesis should adapt to the needs of little incision replacement technique development.
Summary of the invention
For making up the deficiency of five deep existence in prior art, for misery and the operation risk that reduces the patient, the invention provides a kind of deep traditional design theory of knee joint of having broken, avoid five of tradition deep, make the operating theater instruments of complete knee joint and the femur osteotomy apparatus that the knee-joint prosthesis design more adapts to little incision replacement technique: a kind of little condyle bone-cutting device, comprise driving shaft, gear-box, locating rod, a preartis bone cutter, two far-end bone cutters and two postartis bone cutters; Described driving shaft is power input shaft, and gives described preartis bone cutter by gear-box with transmission of power, two far-end bone cutters and two postartis bone cutters, and described locating rod is positioned at the front end of gear-box.
Further, described two far-end bone cutter direction of rotation are opposite.
Further, the direction of rotation of described two postartis bone cutters is opposite.
Further, the front end of described driving shaft is positioned at described gear-box, is provided with driving gear on driving shaft; Also be provided with in gear-box: use gear shaft and two first disposed thereon for two first and use gear; Use gear shaft and two second disposed thereon for two second and use gear; Use gear shaft and two the 3rd disposed thereon for two the 3rd and use gear; A deep cutter shaft of preartis and preartis bone cutter gear disposed thereon; Two postartis bone cutter gears on two far-end bone cutter gears on two deep cutter shafts of far-end, two deep cutter shafts of postartis; Above-mentioned each axle all is supported on gear-box; The deep cutter shaft of described preartis, two deep cutter shafts of far-end and two deep cutter shafts of postartis stretch out by the front end of described gear-box; Preartis bone cutter, two far-end bone cutters and two postartis bone cutters are separately positioned on the external part that the deep cutter shaft of preartis, two deep cutter shafts of far-end and two deep cutter shafts of postartis stretch out forward by gear-box.
Further, described driving gear is used gear and is meshed with two first, drives first and uses gear and rotate; First uses gear and second uses gear and is meshed, and drives second and uses gear and rotate; Second uses gear is meshed with preartis bone cutter gear, drives the rotation of the deep cutter shaft of preartis; Second uses gear, is meshed with far-end bone cutter gear, drives the deep cutter shaft of far-end and rotates; Another first is used gear and is meshed with another far-end bone cutter gear, drives the deep cutter shaft of another far-end and rotates; The 3rd uses gear is meshed with far-end bone cutter gear, and be meshed with postartis bone cutter gear, and with the transmission of power of the deep cutter shaft of far-end to the deep cutter shaft of postartis, another the 3rd is used gear and is meshed with another far-end bone cutter gear, and by being meshed to drive the rotation of the deep cutter shaft of another postartis with another postartis bone cutter gear.
Further, described driving shaft rear end is cross-axis head, and by stretching out backward in described gear-box, and consists of the power quick connector with the power sub that is arranged on described gear-box rear end; Realize with power input device between fast inserting be connected.
Further, also comprise in gear-box the deep cutter shaft of another preartis and another preartis bone cutter gear of being connected, be used for connecting preartis bone cutter gear and second and use the 4th of gear and use gear shaft and the disposed thereon the 4th and use gear; Use gear by the described the 4th and use gear to described preartis bone cutter transferring power by second; The 4th uses gear shaft and the deep cutter shaft of preartis all is supported in gear-box; Another preartis bone cutter is arranged on the deep cutter shaft of preartis by external part in gear-box, and the direction of rotation of two preartis bone cutters is opposite.
Further, described each bone cutter and deep cutter shaft thereof are structure as a whole.
Further, described each bone cutter is two-edged or multiple-cutting-edge circular knife.
Further, between described each bone cutter and the quantity of using gear that arranges between each bone cutter and driving shaft should according to each bone cutter direction of rotation and satisfy driving shaft and bone cutter between and Set arbitrarily under the condition of distance between each bone cutter.
Use the little condyle bone-cutting device that provides in the present invention to break the deep traditional design theory of knee joint, five cuttings of tradition have been avoided, can be vertically deep near end of thighbone at the human femur under loading far-end, can greatly reduce exposure, the Reduction surgery otch because employing is vertically deep; Be cut into half slot owing to adopting at femur preartis and postartis, be cut into circular arc in distal femur, get out the Bao Youxiao again that the step blind hole can make the design change of lateral femoral condyle prosthesis on circular arc, make the operating theater instruments of complete knee joint and knee-joint prosthesis design more adapt to little incision replacement technique.In addition the little condyle bone-cutting device in the present invention also has following advantage: the first, can reduce the deep amount of operation; The second, can under the condition that guarantees lateral femoral condyle prosthesis intensity, alleviate the weight (thickness) of lateral femoral condyle prosthesis; The 3rd, increased the stability that lateral femoral condyle prosthesis is installed; The 4th, the birth of little condyle bone-cutting device and use the design concept will change inboard five planes of traditional lateral femoral condyle prosthesis, the supporting with it lateral femoral condyle prosthesis that will be born simultaneously is a brand-new little condyle prosthese; The 5th, owing to having broken the deep traditional design theory of knee joint, avoid five cuttings of tradition, therefore, cutting precision is high, and required deep power is little, and has shortened operating time, alleviates the patient suffering.
Description of drawings
Fig. 1 is little condyle bone-cutting device assembling schematic diagram;
Fig. 2 is little condyle bone-cutting device gear drive schematic diagram in embodiment 1;
Fig. 3 is little condyle bone-cutting device gear drive schematic diagram in embodiment 2.
The specific embodiment
As shown in Fig. 1,2, the little condyle bone-cutting device in the present invention comprises power sub 1, driving shaft 2, gear-box 3, locating rod 4,5, two far-end bone cutters 6 of preartis bone cutter, 7 and two postartis bone cutters 8,9.Setting power sub 1 part is the rear end of little condyle bone-cutting device.Driving shaft 2 is power input shaft, the front end of driving shaft 2 and the driving gear 21 that is arranged on its front end thereof are arranged in gear-box 3, its rear end is that cross-axis head 26 is stretched out backward by gear-box, is positioned to be arranged on gear-box 3 rear end power subs 1, consists of the power quick connector together with power sub 1.Realize with power input device between fast inserting be connected.Gear-box 3 is interior except the front end that is provided with driving shaft 2 and the driving gear 21 that arranges on it, also be provided with: use gear shaft and two of being separately positioned on it use gear 22a, 22b for two first, use gear shaft and be separately positioned on for two second and use gear 23a, 23b on it; A deep cutter shaft 510 of preartis and preartis bone cutter gear 51 disposed thereon, two deep cutter shafts 610 of far-end, 710 and be separately positioned on two far-end bone cutter gears 61,71 on it, use gear shaft and two the 3rd of being separately positioned on it use gear 24a, 24b for two the 3rd, two deep cutter shafts 810 of postartis, 910 and be separately positioned on two postartis bone cutter gears 81,91 on it.Above-mentioned each axle all is supported on gear-box.
The deep cutter shaft 510 of preartis, two deep cutter shafts 610 of far-end, 710 and two deep cutter shafts 810 of postartis, 910 stretch out by the gear-box front end.Preartis bone cutter 5, two far-end bone cutters 6,7 and two postartis bone cutters 8,9 are separately positioned on the external part that the deep cutter shaft 510 of preartis, two deep cutter shafts 610 of far-end, 710 and two deep cutter shafts 810 of postartis, 910 stretch out forward by gear-box.
Locating rod 4 is arranged on the front end of gear-box, and stretches out forward.It act as and inserts location in marrow front hole 12.
during use, locating rod 4 is inserted in marrow front hole, relative position between the bone of determining little condyle bone-cutting device and will cutting, power input device is little condyle bone-cutting device input power by the quick connector that is arranged on little condyle bone-cutting device rear end, driving driving shaft 2 rotates, driving shaft 2 drives two first by driving shaft gear disposed thereon 21 and uses gear 22a, 22b rotates, and use gear 22a by first, 22b and second uses gear 23a, 23b and far-end bone cutter gear 61, 71 engagement drives preartis bone cutter 5 and two far-end bone cutters 6, 7 rotate, two deep gears 61 of far-end, 71 drive respectively two the 3rd uses gear 24a, 24b rotates, and drive is used gear 24a with two the 3rd respectively, two postartis bone cutter gears 81 of 24b engagement, 91 rotate, and then drive two deep cutter shafts 810 of postartis, 910 and two postartis bone cutters 8 disposed thereon, 9 rotate.So after power was input to little condyle bone-cutting device by driving shaft 2, five rotated bone cutter simultaneously, simultaneously condyle of femur are cut.For counter balance torque, two far-end bone cutters 6 in the present invention, 7 rotation direction are opposite, and two postartis bone cutters 8,9 rotation direction are also opposite.The moment of torsion that such design can make bone cutter produce in rotary course is cancelled out each other, and has alleviated operator's manipulation force, makes to operate portable and stable more, reduces simultaneously the injury to bone.
As shown in Figure 3, the difference between the structure of the little condyle bone-cutting device in embodiment 2 and the little condyle bone-cutting device structure in embodiment 1 is: increased a preartis bone cutter 10 on the little condyle bone-cutting device architecture basics in embodiment 1.And in gear-box 3 the corresponding deep cutter shaft 110 of preartis and the preartis bone cutter gear 11 disposed thereon of having increased; Be connected connecting preartis bone cutter gear 11 and second use gear 23a the 4th use gear 25 and gear shaft thereof: the 4th uses gear shaft.Preartis bone cutter 10 is arranged on the deep cutter shaft 110 of preartis by the front end that stretches out in gear-box 3.Preartis bone cutter gear 11 and the 4th is used gear 25 and is meshed, and the 4th uses gear shaft is supported in gear-box 3.The 4th uses gear 25 also uses gear 22b and is meshed with second.The second rotation of using gear 22b drives the 4th and uses gear 25 rotations, and then drives 10 rotations of preartis bone cutter.Two preartis bone cutters 5,10 direction of rotation are also opposite.
The opposite design of each bone cutter direction of rotation in above-mentioned two embodiment, the moment of torsion that bone cutter is produced in rotary course is cancelled out each other, and has alleviated operator's manipulation force, makes to operate portable and stable more, reduces simultaneously the injury to bone.
Bone cutter and deep cutter shaft thereof in above-mentioned two embodiment can be made of one or Split type structure, and two far-end bone cutters can be selected staircase structural model or wheel chair access other structures, and all bone cutters all can be selected two-edged or multiple-cutting-edge circular knife.
What particularly point out in addition is that in above-mentioned two embodiment, each effect of using gear is between direction of rotation, adjustment driving shaft and each bone cutter of adjusting each bone cutter and the distance between each bone cutter.The quantity of using gear of using between gear quantity and bone cutter between driving shaft and bone cutter can increase according to actual needs or reduce, make between the direction of rotation of each bone cutter and bone cutter apart from practical requirement.
Protection scope of the present invention is not limited to the above embodiments.According to any distortion that the specific embodiment of the present invention is made, all do not break away from the scope of spirit of the present invention and claim record.
Claims (10)
1. little condyle bone-cutting device, it is characterized by: this little condyle bone-cutting device can reach at femur preartis and postartis and be cut into half slot, be cut into circular arc in distal femur, get out the step blind hole on circular arc, little condyle bone-cutting device comprises driving shaft (2), gear-box (3), locating rod (4), a preartis bone cutter (5), two far-end bone cutters (6,7) and two postartis bone cutters (8,9); Described driving shaft (2) is power input shaft, and give described preartis bone cutter (5) by gear-box (3) with transmission of power, two far-end bone cutters (6,7) and two postartis bone cutters (8,9), described locating rod (4) is positioned at the front end of gear-box (3).
2. little condyle bone-cutting device according to claim 1, it is characterized by: described two far-end bone cutters (6,7) direction of rotation is opposite.
3. described little condyle bone-cutting device according to claim 1 and 2, it is characterized by: the direction of rotation of described two postartis bone cutters (8,9) is also opposite.
4. little condyle bone-cutting device according to claim 1, it is characterized by: the front end of described driving shaft (2) is positioned at described gear-box (3), is provided with driving gear (21) on driving shaft (2); Gear-box also is provided with in (3): use gear shaft for two first and use gear (22a, 22b) with two first that are separately positioned on it; Use gear shaft for two second and use gear (23a, 23b) with two second that are separately positioned on it; Use gear shaft for two the 3rd and use gear (24a, 24b) with two the 3rd that are separately positioned on it; A deep cutter shaft of preartis (510) and preartis bone cutter gear (51) disposed thereon, two far-end bone cutter gears (61,71) on two deep cutter shafts of far-end (610,710), two the postartis bone cutter gears (81,91) on two deep cutter shafts of postartis (810,910); Above-mentioned each axle all is supported on gear-box (3); The deep cutter shaft of described preartis (510), two deep cutter shafts of far-end (610,710) and two deep cutter shafts of postartis (810,910) stretch out by the front end of described gear-box (3); Preartis bone cutter (5), two far-end bone cutters (6,7) and two postartis bone cutters (8,9) are separately positioned on the external part that the deep cutter shaft of preartis (510), two deep cutter shafts of far-end (610,710) and two deep cutter shafts of postartis (810,910) stretch out forward by gear-box (3).
5. little condyle bone-cutting device according to claim 4 is characterized by: described driving gear (21) is used gear (22a, 22b) and is meshed with two first, drives first and uses gear and rotate; First uses gear (22a) uses gear (23a, 23b) and is meshed with two second, drives the second gear and rotates; Second uses gear (23a) is meshed with preartis bone cutter gear (51), drives the rotation of the deep cutter shaft of preartis (510); Another second uses gear (23b), is meshed with far-end bone cutter gear (61), drives the deep cutter shaft of far-end (610) and rotates; Another first is used gear (22b) and is meshed with another far-end bone cutter gear (71), drives the deep cutter shaft of another far-end (710) and rotates; The 3rd uses gear (24a) is meshed with far-end bone cutter gear (61), and be meshed with postartis bone cutter gear (81), and with the transmission of power of the deep cutter shaft of far-end to the deep cutter shaft of postartis (810), another the 3rd is used gear (24b) and is meshed with another far-end bone cutter gear (62), and with by being meshed to drive the rotation of the deep cutter shaft of another postartis (910) with another postartis bone cutter gear (91).
According to claim 1 described in little condyle bone-cutting device, it is characterized by: described driving shaft (2) rear end is cross-axis head, and by stretching out backward in described gear-box (3), and consist of the power quick connector with the power sub (1) that is arranged on described gear-box (3) rear end; Realize with power input device between fast inserting be connected.
According to claim 1 described in little condyle bone-cutting device, it is characterized by: also comprise the deep cutter shaft of another preartis (110) and another preartis bone cutter gear (11) of being connected in gear-box (3), be used for connecting preartis bone cutter gear (11) and second and use the 4th of gear and use gear shaft and the disposed thereon the 4th and use gear (25); Use gear (25) by the described the 4th and use gear (23a) to described preartis bone cutter (11) transferring power by second; The 4th uses gear shaft and the deep cutter shaft of preartis (110) all is supported in gear-box (3); Another preartis bone cutter (10) is arranged on the deep cutter shaft of preartis (110) by external part in gear-box (3), and the direction of rotation of described two preartis bone cutters (5,10) is opposite.
8. according to little condyle bone-cutting device described in above-mentioned arbitrary claim, it is characterized by: described each bone cutter and deep cutter shaft thereof are structure as a whole.
9. little condyle bone-cutting device described in claim 1, it is characterized by: described each bone cutter is two-edged or multiple-cutting-edge circular knife.
10. according to claim 4, little condyle bone-cutting device described in 5,7, it is characterized by: between described each bone cutter and the quantity of using gear that arranges between each bone cutter and driving shaft (2) should and satisfy between driving shaft (2) and bone cutter and Set arbitrarily under the condition of distance between each bone cutter according to each bone cutter direction of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267769 CN102379735B (en) | 2010-08-31 | 2010-08-31 | Miniature condyle bone cutting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010267769 CN102379735B (en) | 2010-08-31 | 2010-08-31 | Miniature condyle bone cutting device |
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| Publication Number | Publication Date |
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| CN102379735A CN102379735A (en) | 2012-03-21 |
| CN102379735B true CN102379735B (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010267769 Active CN102379735B (en) | 2010-08-31 | 2010-08-31 | Miniature condyle bone cutting device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342727B (en) * | 2015-12-16 | 2018-05-11 | 嘉思特华剑医疗器材(天津)有限公司 | A kind of CR types and PS type condyle of femur die trials and intercondylar processor function integration structure |
| CN115956977B (en) * | 2023-03-16 | 2023-05-30 | 北京爱康宜诚医疗器材有限公司 | Distal femur condyle grinding device |
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| US5282803A (en) * | 1991-03-07 | 1994-02-01 | Smith & Nephew Richards Inc. | Instrumentation for long stem surgery |
| CN1785129A (en) * | 2005-10-20 | 2006-06-14 | 北京茵普兰科技发展有限公司 | Femur formation and cutting center |
| CN2936174Y (en) * | 2006-08-16 | 2007-08-22 | 北京茵普兰科技发展有限公司 | Femur osteotomy device |
| CN101652114A (en) * | 2006-10-04 | 2010-02-17 | 史密夫和内修有限公司 | Device and method for distal resections of a knee prosthetic |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070233138A1 (en) * | 2006-01-27 | 2007-10-04 | Zimmer Technology, Inc. | Apparatuses and methods for arthroplastic surgery |
-
2010
- 2010-08-31 CN CN 201010267769 patent/CN102379735B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5282803A (en) * | 1991-03-07 | 1994-02-01 | Smith & Nephew Richards Inc. | Instrumentation for long stem surgery |
| CN1785129A (en) * | 2005-10-20 | 2006-06-14 | 北京茵普兰科技发展有限公司 | Femur formation and cutting center |
| CN2936174Y (en) * | 2006-08-16 | 2007-08-22 | 北京茵普兰科技发展有限公司 | Femur osteotomy device |
| CN101652114A (en) * | 2006-10-04 | 2010-02-17 | 史密夫和内修有限公司 | Device and method for distal resections of a knee prosthetic |
Non-Patent Citations (2)
| Title |
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| 廉永云，等.微创人工全膝关节置换术的研究进展.《中华关节外科杂志》.2007,第1卷(第4期), * |
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