CN107049417A - T-shaped positioning rule outside a kind of knee prosthesis marrow - Google Patents
T-shaped positioning rule outside a kind of knee prosthesis marrow Download PDFInfo
- Publication number
- CN107049417A CN107049417A CN201710195277.8A CN201710195277A CN107049417A CN 107049417 A CN107049417 A CN 107049417A CN 201710195277 A CN201710195277 A CN 201710195277A CN 107049417 A CN107049417 A CN 107049417A
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- Prior art keywords
- positioning rule
- femur
- knee prosthesis
- mechanical axis
- hole
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
- A61B17/1764—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee
- A61B17/1767—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the knee for the patella
-
- 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
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1732—Guides or aligning means for drills, mills, pins or wires for bone breaking devices
-
- 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)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The present invention is T-shaped positioning rule outside a kind of knee prosthesis marrow, the positioning rule being connected including femur mechanical axis locating rod and with the femur mechanical axis locating rod square crossing, the positioning rule includes the first positioning rule section and second positioning rule section at least partly symmetrical by symmetry axis of femur mechanical axis locating rod.Positioning rule structure of the present invention can quickly position and find the mechanical axis of femur, and its positioning is quick, precision is high, simple to operate, safe, simple in construction, reliability is high, cost is low.
Description
Technical field
The present invention relates to technical field of medical instruments, and in particular to T-shaped positioning rule outside a kind of knee prosthesis marrow.
Background technology.
As modern prosthetic design is developed rapidly with manufacturing technology, knee replacements are opened extensively in worldwide
Exhibition.Accurate lower limb and the prosthese line of force are recovered to be considered as one of successful key of total knee arthroplasty, current distal femur
Osteotomy mainly has positioning in marrow, marrow outside fix, area of computer aided positioning.Positioning is relatively accurate in marrow, but increase bleeding, fat embolism
The complication such as plug, it is impossible to be used in deformity, the femur of pulp cavity locking.Marrow outside fix is with mostly fixed with distal femur bone mark
Position, error is larger, and computer navigation auxiliary total knee replacement positioning in recent years, individuation customization osteotomy module etc. are gradually applied
In clinic, the accuracy of operation can be improved to a certain extent.But it is long to there is expensive, operating time in these methods, increase
Patients'perioperative infection rate；Meanwhile, the utilization of computer assisted navigation easily increases risk of bone fracture in surgical procedure,
Especially for sufferers of osteoporosis face.It must be one-time fixed in surgical procedure in place, it is to avoid patient repeats fixed, learning curve
Long the shortcomings of, also fail at present in wide clinical application.
The content of the invention
The object of the present invention is to overcome the problems of the prior art, and there is provided T-shaped positioning outside a kind of knee prosthesis marrow
Chi.
To realize above-mentioned technical purpose and the technique effect, the present invention is achieved through the following technical solutions：
T-shaped positioning rule outside a kind of knee prosthesis marrow, including femur mechanical axis locating rod and with the femur mechanical axis position
The positioning rule of bar square crossing connection, the positioning rule includes at least partly mutually right by symmetry axis of femur mechanical axis locating rod
The the first positioning rule section and the second positioning rule section claimed.
Further, the first positioning rule section and the second positioning rule section are provided with fixed structure.
Further, the fixed structure includes being distributed in some concentric in the first positioning rule section and the second positioning rule section
Positioning hole, the concentric locating hole is used to follow one bone label hole, overlaps both centers of circle.
Further, the femur index aperture be one in fossa intercondylaris femoris fornix portion's central point along femur longitudinal axis near-end
The 2mm-4mm bored at 10mm-40mm hole.
Further, in addition to fixed structure the auxiliary fixing structure being engaged, the auxiliary fixing structure includes one
Hollow circular cylinder, the hollow circular cylinder stretches into concentric locating hole and mutually forms homocentric secure fit, the hollow circuit cylinder
External week is provided between the body of rod around a circular protrusion, the circular protrusion and concentric locating hole and forms a fixing hole groove, just
Clamped with one heart in corresponding clamping device, prevent from slipping so that have what is relatively rotated between hollow circular cylinder and clamping device
The free degree, does not make level, vertical displacement.
Further, described some concentric locating holes are equidistantly set in the first positioning rule section and the second positioning rule section
Put.
Further, the femur mechanical axis locating rod is provided with the locating slot along its bar length direction.
The beneficial effects of the invention are as follows:
Structure of the present invention only need to arbitrarily take patient's lower limb abduction or two location points in interior time receiving, complete one with late-segmental collapse
Line is the natural isosceles triangle on base during for summit, femoral intercondylar index aperture abduction, interior receipts position, and positioning rule of the present invention can be with
The isosceles triangle that a base can change is formed, the base of the isosceles triangle that can change can be with natural isoceles triangle
The base coincident of shape, during coincidence, femur mechanical axis locating rod in the middle of positioning rule necessarily with by late-segmental collapse point be summit
The bisector of isosceles triangle coincides, and the femur mechanical axis locating rod extended line in the middle of positioning rule necessarily passes through late-segmental collapse
Point, now the position of femur mechanical axis locating rod is the mechanical axis of femur, and it is high, simple to operate, safe that it positions quick, precision
High, the simple in construction, reliability of property is high, cost is low.
Brief description of the drawings
Fig. 1 is the overall structure diagram of positioning rule of the present invention；
Fig. 2 is auxiliary fixing structure stereogram of the invention.
Fig. 3 is auxiliary fixing structure front view of the invention.
Fig. 4 is the auxiliary fixing structure of the present invention and the matching chart of clamping device.
Fig. 5 is at first concentric locating hole demarcation of positioning rule of the present invention.
Fig. 6 is at second concentric locating hole demarcation of positioning rule of the present invention.
At positioning of the Fig. 7 for the femur mechanical axis locating rod of positioning rule of the present invention.
Fig. 8 is the positioning schematic of positioning rule of the present invention.
Label declaration in figure：1st, femur mechanical axis locating rod, 11, locating slot, 2, positioning rule, the 21, first positioning rule section,
22nd, the second positioning rule section, 3, concentric locating hole, 4, nest fornix portion central point, 5, femur, 6, hollow circular cylinder, 61, ring-type dashes forward
Rise, 62, fixing hole groove, 7, universal connection rod, 8, folder with one heart.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the present invention is described in detail.
Shown in reference picture 1, including femur mechanical axis locating rod 1 and with the square crossing of femur mechanical axis locating rod 1
The positioning rule 2 of connection, it is symmetry axis at least partly symmetrical that the positioning rule 2, which is included with femur mechanical axis locating rod 1,
One positioning rule section 21 and the second positioning rule section 22.
The first positioning rule section 21 and the second positioning rule section 22 are provided with fixed structure, for fixing the first positioning rule section
21 or second positioning rule section 22, it there was only the free degree in chi Plane Rotation direction.
The fixed structure includes some concentric locatings being distributed in the first positioning rule section 21 and the second positioning rule section 22
Hole 3, the concentric locating hole 3 is used to follow one bone label hole, overlaps both centers of circle
What the femur index aperture was bored for one in fossa intercondylaris femoris fornix portion central point 4 along the longitudinal axis near-end 10mm-40mm of femur 5
One 2mm-4mm hole, can be according to the specification of the positioning rule size used, fine setting femur mark in specific operation
The position in hole.
Shown in reference picture 2 and Fig. 4, in addition to the auxiliary fixing structure being engaged with fixed structure, the auxiliary fixed knot
Structure includes a hollow circular cylinder 6, and the hollow circular cylinder 6 stretches into concentric locating hole 3 and mutually forms homocentric secure fit, institute
State formation between the body of rod that the periphery of hollow circular cylinder 6 is provided with around a circular protrusion 61, the circular protrusion 61 and concentric locating hole 3
One fixing hole groove 62, is easy to corresponding clamping device to clamp with one heart, prevents from slipping so that hollow circular cylinder 6 and clamping device
Between there is the free degree relatively rotated, do not make level, vertical displacement, in the present embodiment, with continued reference to described in Fig. 4, clamping
Instrument uses the concentric folder 8 that universal connection rod 7 and its head are provided with, and folder 8 is clamped at fixing hole groove 62 with one heart, with one heart
Folder 8 keeps relatively rotating with hollow circular cylinder 6 in clamping, so as to keep the axle center of hollow circular cylinder 6 in the circle of femur index aperture
The heart is rotated.
Described some concentric locating holes 3 spaced set in the first positioning rule section 21 and the second positioning rule section 22, from
And make it that scale is played a part of in several concentric locating holes 3 simultaneously, it is easy to observe position of the suffering limb in positioning rule 2.
The femur mechanical axis locating rod 1 is provided with the locating slot 11 along its bar length direction.
Action process of the present invention and principle
When being positioned in the present invention：
1. shown in reference picture 5, the right that first suffering limb is moved in the first positioning rule of positioning rule 2 section 21 sides, i.e. Fig. 5, tiptoe
Forward, the femur index aperture of an about 3mm is bored along the longitudinal axis of femur 5 about 15mm in the near-end of fossa intercondylaris femoris fornix portion central point 4, and
A concentric locating hole 3 in the first positioning rule section 21 is set to be overlapped with the center of circle of femur index aperture, and with being fixed on operation table
The concentric folder 8 of common universal connection rod 7 clamps the concentric fixing hole 3, fixes universal connection rod 7；
2. shown in reference picture 6, suffering limb is moved again, while the concentric fixation to be pressed from both sides 8 clampings in the first positioning rule section 21 with one heart
Hole 3 is center of circle rotational positioning chi 2, makes a concentric locating hole 3 in the second positioning rule section 22 of positioning rule 2 and femur index aperture
The center of circle overlap, while ensuring in the second positioning rule section 22 the concentric locating hole 3 that is overlapped with the center of circle of femur index aperture to femur
The vertical range of mechanical axis locating rod 1 is equal to the concentric locating hole overlapped in the first positioning rule section 21 with the center of circle of femur index aperture
The vertical range of 3 to femur mechanical axis locating rod 1 is equal, and with the concentric folder 8 for the common universal connection rod 7 for being fixed on operation table
The concentric fixing hole 3 in the second positioning rule section 22 of clamping position chi 2, fixes universal connection rod 7；
4. shown in reference picture 7, finally suffering limb is moved at the femur mechanical axis locating rod 1 of centre so that the femur index aperture center of circle
Coincided with the bisector of locating slot 11, locating slot 11 is to orientate mechanical axis as, and two pieces of pilot pins are pierced in locating slot 11,
Installation form osteotomy.
5. with method suffering limb positioned at sagittal plane make horizontal position and raise when, the sagittal plane line of force can be positioned.
The principle of the invention：
Shown in reference picture 8, isosceles triangle property is utilized：On center line on the drift angle bisector of isosceles triangle, base, base
Height overlap（Write a Chinese character in simplified form into " unification of the line of isosceles triangle three "）, it is possible thereby to release：If two isosceles triangles are shared
Same base, its drift angle bisector is necessarily overlapped.When lower limb abduction, interior time receiving, that is, complete one by summit of late-segmental collapse,
Line is the natural isosceles triangle on base when femoral intercondylar index aperture abduction, interior receipts position；In Fig. 8 of the present embodiment, A points are
The concentric locating hole that is overlapped with the center of circle of femur index aperture in first positioning rule section 21, B points be in the second positioning rule section 22 with stock
The concentric locating hole that the center of circle in bone label hole is overlapped, D points are the upper end of femur mechanical axis locating rod 1, in addition femur mechanical axis
The square crossing tie point of locating rod 1 and positioning rule 2 is C, and the AC sections of positioning rule 2 of the present invention are mirror with BC sections, and
AC sections variable with BC sections of length, so that the isosceles triangle ADB that a base can change is formed, when lower limb abduction, interior receipts
When, the isosceles three formed by the base that late-segmental collapse point O is the natural isosceles triangle that summit is formed with positioning rule of the present invention
Angular ADB base is to share coincidence, forms the isosceles triangle ADB and AOB on two common bases.The then stock in the middle of positioning rule 2
Bone mechanical axis locating rod 1 necessarily with by late-segmental collapse point O for summit isosceles triangle AOB base vertical bisector CO phases
Overlap, the extended line of femur mechanical axis locating rod 1 in the middle of positioning rule 2 is certain by femoral head, now femur mechanical axis locating rod 1
Position be the femur to be found mechanical axis.
Furthermore, it is necessary to explanation, unless stated otherwise or is pointed out, term " first " otherwise in specification, " the
The descriptions such as two " are used only for distinguishing each component, element, step in specification etc., without being intended to indicate that each component, member
Logical relation or ordinal relation between element, step etc..
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (7)
1. T-shaped positioning rule outside a kind of knee prosthesis marrow, it is characterised in that including femur mechanical axis locating rod（1）And with institute
State femur mechanical axis locating rod（1）The positioning rule of square crossing connection（2）, the positioning rule（2）Including fixed with femur mechanical axis
Position bar（1）For symmetrical the first positioning rule section of symmetry axis at least part（21）With the second positioning rule section（22）.
2. T-shaped positioning rule outside knee prosthesis marrow according to claim 1, it is characterised in that the first positioning rule section
（21）With the second positioning rule section（22）It is provided with fixed structure.
3. T-shaped positioning rule outside knee prosthesis marrow according to claim 2, it is characterised in that the fixed structure includes
It is distributed in the first positioning rule section（21）With the second positioning rule section（22）On some concentric locating holes（3）, the concentric locating hole
（3）For following one bone label hole, overlap both centers of circle.
4. T-shaped positioning rule outside knee prosthesis marrow according to claim 3, it is characterised in that the femur index aperture is
One in fossa intercondylaris femoris fornix portion central point（4）Along femur（5）The 2mm-4mm bored at longitudinal axis near-end 10mm-40mm hole.
5. T-shaped positioning rule outside the knee prosthesis marrow according to Claims 2 or 3, it is characterised in that also include and fixed knot
The auxiliary fixing structure that structure is engaged, the auxiliary fixing structure includes a hollow circular cylinder（6）, the hollow circular cylinder（6）
Stretch into concentric locating hole（3）In and mutually form homocentric secure fit, the hollow circular cylinder（6）Periphery is provided with a circular protrusion
（61）, the circular protrusion（61）With concentric locating hole（3）A fixing hole groove is formed between the body of rod of surrounding（62）, it is easy to correspondence
Clamping device clamp with one heart, prevent slip so that hollow circular cylinder（6）There is the freedom relatively rotated between clamping device
Degree, does not make level, vertical displacement.
6. T-shaped positioning rule outside knee prosthesis marrow according to claim 5, it is characterised in that described is some fixed with one heart
Position hole（3）In the first positioning rule section（21）With the second positioning rule section（22）Upper spaced set.
7. T-shaped positioning rule outside knee prosthesis marrow according to claim 1, it is characterised in that the femur mechanical axis is determined
Position bar（1）It is provided with the locating slot along its bar length direction（11）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195277.8A CN107049417A (en) | 2017-03-29 | 2017-03-29 | T-shaped positioning rule outside a kind of knee prosthesis marrow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195277.8A CN107049417A (en) | 2017-03-29 | 2017-03-29 | T-shaped positioning rule outside a kind of knee prosthesis marrow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107049417A true CN107049417A (en) | 2017-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195277.8A Pending CN107049417A (en) | 2017-03-29 | 2017-03-29 | T-shaped positioning rule outside a kind of knee prosthesis marrow |
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| Country | Link |
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| CN (1) | CN107049417A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667545A (en) * | 2017-02-06 | 2017-05-17 | 翟延荣 | Total knee prosthesis extramedullary locating rule |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070239157A1 (en) * | 2004-03-26 | 2007-10-11 | Francis Guillaume | Ancillary Assembly for Implanting a Knee Prosthesis |
| US20090216247A1 (en) * | 2005-05-06 | 2009-08-27 | Michel Collette | Sighting instrument for determining the mechanical axis of the femur |
| US20120029581A1 (en) * | 2010-07-29 | 2012-02-02 | Koichi Kanekasu | Apparatus for Identifying Femoral Head Center |
| CN202908707U (en) * | 2012-11-30 | 2013-05-01 | 华北石油管理局总医院 | Clavicle midpoint gauge |
| CN203677110U (en) * | 2014-01-23 | 2014-07-02 | 宋其韬 | Medical X-ray photographing measurement ruler |
| CN204072095U (en) * | 2014-06-26 | 2015-01-07 | 陈康 | A kind of medical special measurement device |
| CN205493974U (en) * | 2016-02-02 | 2016-08-24 | 郑明辉 | Bone os pelvicum rolls over locator that resets |
| CN207356110U (en) * | 2017-03-29 | 2018-05-15 | 苏州市吴中人民医院 | T-shaped positioning rule outside a kind of knee prosthesis marrow |
-
2017
- 2017-03-29 CN CN201710195277.8A patent/CN107049417A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070239157A1 (en) * | 2004-03-26 | 2007-10-11 | Francis Guillaume | Ancillary Assembly for Implanting a Knee Prosthesis |
| US20090216247A1 (en) * | 2005-05-06 | 2009-08-27 | Michel Collette | Sighting instrument for determining the mechanical axis of the femur |
| US20120029581A1 (en) * | 2010-07-29 | 2012-02-02 | Koichi Kanekasu | Apparatus for Identifying Femoral Head Center |
| CN102342860A (en) * | 2010-07-29 | 2012-02-08 | 金粕浩一 | Apparatus for identifying femoral head center |
| CN202908707U (en) * | 2012-11-30 | 2013-05-01 | 华北石油管理局总医院 | Clavicle midpoint gauge |
| CN203677110U (en) * | 2014-01-23 | 2014-07-02 | 宋其韬 | Medical X-ray photographing measurement ruler |
| CN204072095U (en) * | 2014-06-26 | 2015-01-07 | 陈康 | A kind of medical special measurement device |
| CN205493974U (en) * | 2016-02-02 | 2016-08-24 | 郑明辉 | Bone os pelvicum rolls over locator that resets |
| CN207356110U (en) * | 2017-03-29 | 2018-05-15 | 苏州市吴中人民医院 | T-shaped positioning rule outside a kind of knee prosthesis marrow |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106667545A (en) * | 2017-02-06 | 2017-05-17 | 翟延荣 | Total knee prosthesis extramedullary locating rule |
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