CN104414703B - Orthognathous bone-cutting saw - Google Patents
Orthognathous bone-cutting saw Download PDFInfo
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- CN104414703B CN104414703B CN201310550279.6A CN201310550279A CN104414703B CN 104414703 B CN104414703 B CN 104414703B CN 201310550279 A CN201310550279 A CN 201310550279A CN 104414703 B CN104414703 B CN 104414703B
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- saw
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- bone
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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
- A61B17/14—Surgical saws ; Accessories therefor
Abstract
The open orthognathous bone-cutting saw of the present invention, including saw blade, saw handle and connecting rod, described saw blade is tetragon, adjacent edge, two limits arranges saw kerf, the most adjacent edge, two limits is circle obtuse, described saw blade is connected by fulcrum with saw handle, described fulcrum is arranged on the angle, two limits that described saw blade edge is circle obtuse, described saw blade is parallel with saw handle, and the distance between saw blade and saw handle is 4.5 7.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 5 11mm, described saw handle and connecting rod are on a plane, and the angle between saw handle and connecting rod is 90 110 degree.Carry out surface of bone smooth grade when fixing in it is an advantage of the current invention that to reduce to operate, it is difficult to, when shortening operating time and simplify operation technique and overcome inferior border of mandible osteotomy, shortcomings such as operating, wayward, effectively avoid the complication such as inferior alveolar nerve vascular bundle damage, make carrying out of operation safer, accurately.
Description
Technical field
The invention belongs to medical instruments field, more particularly, relate to a kind of orthognathous bone-cutting saw for ramus of mandible sagittal Split-crest.
Background technology
Now conventional mandibular bone sagittal Split-crest is with elongated bone saw, a ditch as deep as spongy bone is ground with lower jaw member external obilque line surface of bone osteotomy line brill along anterior border of ramus, then insert in sutura with thin sword osteotome, rive with spongy bone intersection in external circumferential lamella, sutura is inserted with wide sword osteotome, carefully prize, make near, telecentricity section bone piece reach the purpose being kept completely separate.At present, there is no report and the patent application of this type of modified form orthognathous bone-cutting saw related equipment.
Apparatus used in existing mandibular bone sagittal Split-crest has many defects, first, existing osteotomy method is to insert sutura with thin sword osteotome, with the mode prized separate closely, telecentricity section bone section, external circumferential lamella can accurately not separated by the method with spongy bone, easily make bone section that the situation such as out-of-flatness, step occurs, add between bone piece when causing fixing and do not press tightly, cause bone piece poor healing.Secondly, due to operative incision design and the restriction of anatomical structure, make general instruments cannot grind osteotomy line in inferior border of mandible, thus when making osteotomy, the bone detachment position of inferior border of mandible cannot Accurate Prediction, and when cutting cortical bone and spongy bone with thin sword osteotome, easy damaged inferior alveolar nerve vascular bundle, causing the paraesthesias such as numbness of lower lip, severe patient can make intermedium section and soft tissue lose blood supply, be prone to the necrosis of bone section.Again, inside mandibular ramus and angle of mandible, there are many important anatomical structures, such as parotid gland bed etc., as careless slightly during operation osteotomy, are damaged to these important anatomical structures, will result in the most serious hemorrhage intraoperative compliaction that waits, even dead.
Summary of the invention
It is an object of the invention to provide the anatomical structure of a kind of combination human lower jawbone, be accurately positioned the degree of depth of inferior border of mandible osteotomy line, can ensure that bone section is smooth simultaneously, and farthest avoid the orthognathous bone-cutting saw that inferior alveolar nerve, vascular bundle damage.
For realizing object above, the open techniques below scheme of the present invention: orthognathous bone-cutting saw includes saw blade, saw handle and connecting rod, described saw blade is tetragon, adjacent edge, two limits arranges saw kerf, the most adjacent edge, two limits is circle obtuse, described saw blade is connected by fulcrum with saw handle, described fulcrum is arranged on the angle, two limits that described saw blade edge is circle obtuse, described saw blade is parallel with saw handle, and the distance between saw blade and saw handle is 4.5 7.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 5 11mm, described saw handle and connecting rod are on a plane, and the angle between saw handle and connecting rod is 90 110 degree.
In order to avoid in operation, the damage of inferior alveolar nerve vascular bundle causes the complication such as osteonecrosis and soft tissue atrophy, and bone section out-of-flatness causes fixing in art and postoperation recovery is impacted, orthognathous bone-cutting saw of the present invention can be accurately positioned inferior border of mandible osteotomy line, and accurately cuts.By a large amount of practice summary of clinic, consider blade width, i.e. edge be the angle, two limits of circle obtuse be the parameters such as the distance of the angle, two limits of saw kerf, and the distance between saw blade and saw handle to edge.
By the anatomical position of CT data research Chinese's mandible incisor and cortical bone and contacting of grinding one's teeth in sleep, farthest (average 7.82 mm, minimum 4.9 mm) in second molar region mandibular canal distance cheek side seam cortex.In second molar region, lower jaw member is the thickest, and the cheek side vertical incision for sagittal splitting of mandible osteotomy must be in mandibular second molar region, and this region sclerotin is the thickest and mandibular canal distance cheek side seam cortex is farthest.Safety depth for sagittal splitting of mandible osteotomy cheek side vertical incision is 4.9 mm.Mandibular canal lower edge is (9.82 ± 1.26) mm to the distance of inferior border of mandible in the second premolars district, back to third molar Yuan Zhong district (13.52 ± 1.93) mm, in being gradually increased trend in sum.So the width of saw blade, should be less than the inferior alveolar nerve pipe minimum range away from lower jaw lower edge.The distance in saw blade and saw handle portion should be less than the inferior alveolar nerve pipe minimum range away from mandibular bone lateral wall.
For ensureing in art when saw blade enters the deepest distance of mandibular bone, still being able to play the effect that protection is neural, the mandibular bone simultaneously taking account of different people varies in size, and according to a large amount of practice summary of clinic, draws following preferred version.
As a preferred version, the distance between described saw blade and saw handle is 4.5 5.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 5 7mm.
As a preferred version, the distance between described saw blade and saw handle is 5.5 6.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 7 9mm.
As a preferred version, the distance between described saw blade and saw handle is 6.5 7.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 9 11mm.
As a preferred version, the angle between described saw handle and connecting rod is 100 degree.
As a preferred version, described edge be two limit angles of saw kerf be 120 degree.
As a preferred version, described connecting rod arranges link slot, mates use with existing operating theater instruments.
As a preferred version, the a length of 50mm of described saw handle, the average height 27.6～32.3mm of mandibular bone, add lower molar corona average height 5-7mm, a maximum of about of 40mm, in addition for convenience of operation in art, simultaneously takes account of the mouth opening of patient in art, the most suitably increase 10mm, the preferably 50mm design for convenience of operation.
It is an advantage of the current invention that: (1) tetragon saw blade parallel with saw handle reduces bone section and step or irregular situation occur, thus time fixing in reducing, carry out that surface of bone is smooth waits operation, shorten operating time and simplify operation technique；(2) shortcomings such as operating, wayward it is difficult to when overcoming inferior border of mandible osteotomy, by considering blade width, i.e. edge be the angle, two limits of circle obtuse be the distance of the angle, two limits of saw kerf to edge, and the parameter such as the distance between saw blade and saw handle, effectively avoid the complication such as inferior alveolar nerve vascular bundle damage, make carrying out of operation safer, accurately.
Accompanying drawing explanation
Fig. 1 is the structural representation of orthognathous bone-cutting saw of the present invention.
Fig. 2 is the symmetrical structure schematic diagram of orthognathous bone-cutting saw of the present invention.
Fig. 3 is the operation schematic diagram using orthognathous bone-cutting saw of the present invention.
Figure is numbered:
1 saw blade；2 saw handles；3 connecting rods；11 fulcrums；12,13 edges are two limits of saw kerf；14,15 edges are two limits of circle obtuse；16 edges are two limit angles of saw kerf；Angle between 21 saw handles and connecting rod；31 link slots.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is expanded on further.Experimental technique used in following embodiment if no special instructions, is conventional method.Material used in following embodiment, reagent etc., if no special instructions, the most commercially obtain.Should be understood that these embodiments are merely to illustrate the present invention rather than limit the scope of the present invention.
Embodiment
Refer to Fig. 1, orthognathous bone-cutting saw includes saw blade 1, saw handle 2 and connecting rod 3, described saw blade 1 is in tetragon, two adjacent limits 12, 13 edges arrange saw kerf, two the most adjacent limits 14, 15 edges are circle obtuse, described saw blade 1 is connected by fulcrum 11 with saw handle 2, described fulcrum 11 is arranged on two limits 14 that described saw blade 1 edge is circle obtuse, 15 angles, described saw blade 1 is parallel with saw handle 2, and the distance between saw blade 1 and saw handle 2 is 4.5 7.5mm, described edge is two limits 14 of circle obtuse, 15 angles are two limits 12 of saw kerf to edge, the distance of 13 angles is 5 11mm, described saw handle 2 and connecting rod 3 are on a plane, and the angle between saw handle 2 and connecting rod 3 is 90 110 degree.
By the anatomical position of CT data research Chinese's mandible incisor and cortical bone and contacting of grinding one's teeth in sleep, farthest (average 7.82 mm, minimum 4.9 mm) in second molar region mandibular canal distance cheek side seam cortex.In second molar region, lower jaw member is the thickest, and the cheek side vertical incision for sagittal splitting of mandible osteotomy must be in mandibular second molar region, and this region sclerotin is the thickest and mandibular canal distance cheek side seam cortex is farthest.Safety depth for sagittal splitting of mandible osteotomy cheek side vertical incision is 4.9 mm.Mandibular canal lower edge is (9.82 ± 1.26) mm to the distance of inferior border of mandible in the second premolars district, back to third molar Yuan Zhong district (13.52 ± 1.93) mm, in being gradually increased trend in sum.So the width of saw blade, should be less than the inferior alveolar nerve pipe minimum range away from lower jaw lower edge.The distance in saw blade and saw handle portion should be less than the inferior alveolar nerve pipe minimum range away from mandibular bone lateral wall.
For ensureing in art when saw blade enters the deepest distance of mandibular bone, still being able to play the effect that protection is neural, the mandibular bone simultaneously taking account of different people varies in size, and according to a large amount of practice summary of clinic, draws preferred embodiment below.
As a preferred embodiment, the distance between described saw blade 1 and saw handle 2 is 4.5 5.5mm, described edge be the angle, two limits 14,15 of circle obtuse to edge be the distance of the angle, two limits 12,13 of saw kerf be 5 7mm.
As another preferred embodiment, the distance between described saw blade 1 and saw handle 2 is 5.5 6.5mm, described edge be the angle, two limits 14,15 of circle obtuse to edge be the distance of the angle, two limits 12,13 of saw kerf be 7 9mm.
As another preferred embodiment, the distance between described saw blade 1 and saw handle 2 is 6.5 7.5mm, described edge be the angle, two limits 14,15 of circle obtuse to edge be the distance of the angle, two limits 12,13 of saw kerf be 9 11mm.
As a preferred embodiment, the angle 21 between described saw handle 2 and connecting rod 3 is 100 degree.
As a preferred embodiment, described edge be two limit angles 16 of saw kerf be 120 degree.
As a preferred embodiment, described connecting rod 3 arranges link slot 31, mates use with existing operating theater instruments.
As a preferred embodiment, the a length of 50mm of described saw handle 2, the average height 27.6～32.3mm of mandibular bone, add lower molar corona average height 5-7mm, a maximum of about of 40mm, in addition for convenience of operation in art, simultaneously takes account of the mouth opening of patient in art, the most suitably increase 10mm, the preferably 50mm design for convenience of operation.
Operation schematic diagram is as shown in Figure 3, the saw blade design of this orthognathous bone-cutting saw is tetragon, adjacent edge, two limits arranges saw kerf, the most adjacent edge, two limits is circle obtuse, saw blade is parallel with saw handle, art can adjust the cut direction of saw blade, by needing the position of osteotomy to grind a deep and ditch for spongy bone at inferior border of mandible, make when follow-up pelvic radiograph, closely, telecentricity bone section can be in predetermined position separating, overcome former methodical shortcoming: i.e. only go out osteotomy line in mandibular ramus leading edge and lower jaw body location mill, make the osteotomy line inside inferior border of mandible cannot shortcoming accurately when riving.Orthognathous bone-cutting saw of the present invention simplifies operation technique, and the probability developed complications in art is substantially reduced, and reaches accurate, efficient, safe purpose.
Ramus of mandible sagittal Split-crest is divided into left side and right side to carry out, and needs symmetrical operating theater instruments, and Fig. 2 is the symmetrical structure schematic diagram of orthognathous bone-cutting saw of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (8)
1. orthognathous bone-cutting saw, it is characterized in that, including saw blade, saw handle and connecting rod, described saw blade is tetragon, adjacent edge, two limits arranges saw kerf, the most adjacent edge, two limits is circle obtuse, described saw blade is connected by fulcrum with saw handle, described fulcrum is arranged on the angle, two limits that described saw blade edge is circle obtuse, described saw blade is parallel with saw handle, and the distance between saw blade and saw handle is 4.5 7.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 5 11mm, described saw handle and connecting rod are on a plane, and the angle between saw handle and connecting rod is 90 110 degree.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that the distance between described saw blade and saw handle is 4.5 5.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 5 7mm.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that the distance between described saw blade and saw handle is 5.5 6.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 7 9mm.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that the distance between described saw blade and saw handle is 6.5 7.5mm, described edge be the angle, two limits of circle obtuse to edge be the distance of the angle, two limits of saw kerf be 9 11mm.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that the angle between described saw handle and connecting rod is 100 degree.
6. according to the arbitrary described orthognathous bone-cutting saw of claim 14, it is characterised in that described edge be two limit angles of saw kerf be 120 degree.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that described connecting rod arranges link slot.
Orthognathous bone-cutting saw the most according to claim 1, it is characterised in that a length of 50mm of described saw handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310550279.6A CN104414703B (en) | 2013-09-10 | 2013-11-08 | Orthognathous bone-cutting saw |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407238 | 2013-09-10 | ||
| CN2013104072381 | 2013-09-10 | ||
| CN201310550279.6A CN104414703B (en) | 2013-09-10 | 2013-11-08 | Orthognathous bone-cutting saw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104414703A CN104414703A (en) | 2015-03-18 |
| CN104414703B true CN104414703B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320702097.1U Withdrawn - After Issue CN203634243U (en) | 2013-09-10 | 2013-11-08 | Orthognathic bone cutting saw |
| CN201310550279.6A Active CN104414703B (en) | 2013-09-10 | 2013-11-08 | Orthognathous bone-cutting saw |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320702097.1U Withdrawn - After Issue CN203634243U (en) | 2013-09-10 | 2013-11-08 | Orthognathic bone cutting saw |
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| CN (2) | CN203634243U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203634243U (en) * | 2013-09-10 | 2014-06-11 | 上海交通大学医学院附属第九人民医院 | Orthognathic bone cutting saw |
| CN109124788A (en) * | 2018-09-27 | 2019-01-04 | 上海交通大学医学院附属第九人民医院 | It is a kind of for pulling out the device of lower jaw impaction tooth bud |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8233133U1 (en) * | 1982-11-25 | 1983-06-01 | Grafelmann, Hans L., 2800 Bremen | Dental device for making slots in the jaw into which implants are inserted |
| US5122142A (en) * | 1990-09-13 | 1992-06-16 | Hall Surgical Division Of Zimmer, Inc. | Irrigating saw blade |
| US5554165A (en) * | 1995-02-09 | 1996-09-10 | Hall Surgical, Div. Of Zimmer, Inc. | Surgical blade and hub |
| US6022353A (en) * | 1991-05-30 | 2000-02-08 | Synasive Technology, Inc. | Surgical saw blade |
| CN1511012A (en) * | 2001-06-07 | 2004-07-07 | 李在和 | Surgical saw for cutting off jawbone |
| CN1695564A (en) * | 2005-06-23 | 2005-11-16 | 西安三才电子有限公司 | Electric reciprocating saw in use for jaw surgery |
| EP1625909A1 (en) * | 1997-05-28 | 2006-02-15 | maRoc GmbH | Cutting tool |
| CN1943520A (en) * | 2006-10-25 | 2007-04-11 | 总装备部北京黄寺美容外科医院 | Swinging saw special for mandibular angle bone cutting |
| CN201055400Y (en) * | 2007-05-23 | 2008-05-07 | 田永成 | Skeleton shaping saw |
| CN201577333U (en) * | 2009-12-30 | 2010-09-15 | 马俊林 | Tree pruning saw |
| CN202846629U (en) * | 2012-07-02 | 2013-04-03 | 海联锯业有限公司 | Connecting structure of saw bit of swing saw |
| CN203634243U (en) * | 2013-09-10 | 2014-06-11 | 上海交通大学医学院附属第九人民医院 | Orthognathic bone cutting saw |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040243136A1 (en) * | 2003-05-30 | 2004-12-02 | Parag Gupta | Dual cut surgical saw blade |
-
2013
- 2013-11-08 CN CN201320702097.1U patent/CN203634243U/en not_active Withdrawn - After Issue
- 2013-11-08 CN CN201310550279.6A patent/CN104414703B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8233133U1 (en) * | 1982-11-25 | 1983-06-01 | Grafelmann, Hans L., 2800 Bremen | Dental device for making slots in the jaw into which implants are inserted |
| US5122142A (en) * | 1990-09-13 | 1992-06-16 | Hall Surgical Division Of Zimmer, Inc. | Irrigating saw blade |
| US6022353A (en) * | 1991-05-30 | 2000-02-08 | Synasive Technology, Inc. | Surgical saw blade |
| US5554165A (en) * | 1995-02-09 | 1996-09-10 | Hall Surgical, Div. Of Zimmer, Inc. | Surgical blade and hub |
| EP1625909A1 (en) * | 1997-05-28 | 2006-02-15 | maRoc GmbH | Cutting tool |
| CN1511012A (en) * | 2001-06-07 | 2004-07-07 | 李在和 | Surgical saw for cutting off jawbone |
| CN1695564A (en) * | 2005-06-23 | 2005-11-16 | 西安三才电子有限公司 | Electric reciprocating saw in use for jaw surgery |
| CN1943520A (en) * | 2006-10-25 | 2007-04-11 | 总装备部北京黄寺美容外科医院 | Swinging saw special for mandibular angle bone cutting |
| CN201055400Y (en) * | 2007-05-23 | 2008-05-07 | 田永成 | Skeleton shaping saw |
| CN201577333U (en) * | 2009-12-30 | 2010-09-15 | 马俊林 | Tree pruning saw |
| CN202846629U (en) * | 2012-07-02 | 2013-04-03 | 海联锯业有限公司 | Connecting structure of saw bit of swing saw |
| CN203634243U (en) * | 2013-09-10 | 2014-06-11 | 上海交通大学医学院附属第九人民医院 | Orthognathic bone cutting saw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN203634243U (en) | 2014-06-11 |
| CN104414703A (en) | 2015-03-18 |
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