CN107174378A - One kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method - Google Patents
One kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method Download PDFInfo
- Publication number
- CN107174378A CN107174378A CN201710354916.0A CN201710354916A CN107174378A CN 107174378 A CN107174378 A CN 107174378A CN 201710354916 A CN201710354916 A CN 201710354916A CN 107174378 A CN107174378 A CN 107174378A
- Authority
- CN
- China
- Prior art keywords
- tibia support
- tibial insert
- arc
- groove
- circular
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/38—Joints for elbows or knees
- A61F2/389—Tibial components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/28—Bones
- A61F2002/2892—Tibia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
- A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
- A61F2002/30948—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques using computerized tomography, i.e. CT scans
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Transplantation (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Public Health (AREA)
- Physical Education & Sports Medicine (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Prostheses (AREA)
- Surgical Instruments (AREA)
Abstract
The invention discloses one kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method, structure includes：Circular groove and multiple arc grooves with locking mechanism are fixed provided with one in the upper surface of tibia support, the fixed circular groove is arranged on the center of tibia support upper surface, a positioning bone post is provided with the lower surface of tibia support；A fixed cylinder and multiple circular arc bodies matched with arc groove are provided with the lower surface of tibial insert；During assembling, the fixation circular groove that the fixed cylinder on tibial insert is directed at into tibia support first is pressed downward to, tibia support is set to be fitted completely with tibial insert, then tibial insert is twisted, circular arc body is set to be rotated in arc groove, border is completely superposed, and the locking mechanism on arc groove and circular arc body is come into force, and tibial insert is completely fixed with tibia support.The present invention can guarantee that the stability that tibia support is assembled with tibial insert, improves the quality of total knee replacement, Total knee arthroplasty tibia support and tibial insert device can be quickly made for personalized patient.
Description
Technical field
The present invention relates to operation tibia support and tibial insert, more specifically to a kind of personalized rotation clamping type
Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method.
Background technology
Total knee replacement operation is all quickly developing every year in worldwide, and as treatment late period bone
The most effectual way of the diseases such as arthritis, rheumatoid arthritis.But the prosthetic loosening of postoperative appearance, stretch bend and bear a heavy burden after go out
The complication such as existing deformity, pain also result in the attention of numerous orthopedists.
And due to the otherness of individual, the tibia support of volume production and the coverage rate in deep section are not enough, tibial insert and shin
The assembling of bone support is not good, can all influence the quality of operation.
Have benefited from the fast development of computer and digital technology, Digital Three-Dimensional is rebuild medically using more and more wider
General, 3D printing technique advantage on small lot manufacture is customized makes it have wide practical use in personalized medicine.It is domestic
Multidigit scholar rebuilds digitlization and 3D printing technique is applied to field of orthopaedics, but still lacks for personalized tibia support
With effective assembling structure of tibial insert.
The content of the invention
It is a primary object of the present invention to overcome tibia support in the prior art and tibial insert not to be suitable for personalized patient
The problem of complete knee joint is performed the operation can the easy rotation clamping type Total knee arthroplasty tibia support of good, making there is provided a kind of stabilizability
With tibial insert assembling structure and implementation method.
In order to achieve the above object, the present invention uses following technical scheme：
The invention provides one kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure, in tibia support
Circular groove and multiple arc grooves with locking mechanism are fixed in upper surface provided with one, and the fixed circular groove is arranged on tibia support upper surface
Center, tibia support lower surface provided with one positioning bone post；Tibial insert lower surface provided with a fixed cylinder and
Multiple circular arc bodies matched with arc groove；During assembling, the fixed cylinder on tibial insert is directed at the fixed of tibia support first and justified
Groove is pressed downward to, and tibia support is fitted completely with tibial insert, is then twisted tibial insert, makes circular arc body in arc groove inward turning
Turn, and border is completely superposed, now the locking mechanism on arc groove and circular arc body comes into force, and tibial insert is completely solid with tibia support
It is fixed.
As preferred technical scheme, the arc groove is three, one of arc groove be arranged on tibia support just before
Side, two other arc groove is arranged on the left and right sides of tibia support；The circular arc body is three, and one of circular arc body is arranged on
The front of tibial insert lower surface, two other circular arc body is arranged on the left and right sides of tibial insert lower surface.
As preferred technical scheme, the fixed circular groove center of circle is located at same vertical direction with the positioning bone post center of circle, and
The depth of fixed circular groove is identical with positioning bone pillar height degree, and fixed circular groove radius is identical with positioning bone column radius；
The depth of the arc groove is identical with the depth of fixed circular groove；The height of the depth of the arc groove also with circular arc body
It is identical, and the arc groove is located at same straight line with circular arc body starting point, circular arc body angle is no more than the half of the circular arc angle of the v-groove.
As preferred technical scheme, show to be provided with the guide pillar for being used for positioning and fix under the tibia support；The guide pillar
Including big two small three cylinders, big cylinder has certain pattern draft, positioned at tibia support lower surface center, small cylinder
Divide and be listed in big cylinder or so, three is connected by floor.
As preferred technical scheme, the arc groove on the tibia support is evenly distributed centered on fixing circular groove, circular arc
The arc length of groove is identical with arc chord angle.
Clamping type Total knee arthroplasty tibia support and the realization side of tibial insert assembling structure are rotated present invention also offers a kind of
Method, comprises the steps：
S1, the shin bone model for setting up based on the kneed Tibial osteotomy medical image data of patient three-dimensional digital, in advance
Patient's knee joint CT or MRI tomoscan image is obtained, then, CT the or MRI tomographies are imported by dissecting engineering reconstruction software
Scan image, the feature according to bone and soft tissue with different gray values carries out image segmentation and repairing, calculates and obtains three dimensions
The shin bone model of word, and store standby；
S2, model imported into design software, Tibial osteotomy face is set to reference plane, osteotomy is obtained using section curve function
Cross section profile data, by data parameterization to enter edlin
S3, according to cross-section data, the assembling structure at design tibia support position；
S4, the guide pillar in tibia support bottom design auxiliary positioning and fixation；The guide pillar includes big two small three cylinders
Body is constituted, and big cylinder has certain pattern draft, positioned at bone support lower surface center, and it is left that small cylinder point is listed in big cylinder
The right side, three is connected by floor；
S5, correspondence tibia support, corresponding assembling structure is designed in tibial insert；
S6, according to osteotomy data, design tibial insert upper end；
S7, the rotation clamping type Total knee arthroplasty tibia support and tibial insert for being produced using rapid shaping technique entity are assembled
Constructional device.
As preferred technical scheme, in step S1, the dissection engineering reconstruction software used is Mimics 17.0, therefore
Patient's knee joint CT or MRI tomoscan image of acquisition is preserved in dicom format in advance, medical image is then conducted into
In software Mimics 17.0, obtained after three-dimensional reconstruction the shin bone model of three-dimensional digital, store standby with STL forms.
As preferred technical scheme, step S3 is specially：
S31, by the curvilinear stretch of parametrization into tibia support original shape, be highly 4-6mm；
S32, using osteotomy tangent plane as reference plane, into sketch drafting function, find shin bone section lumen centers, draw radius
For 3-5mm circle, cylinder is drawn into, circular groove is formed in tibia support upper surface, depth is 1.8-2mm；
S33, the same face on the basis of osteotomy tangent plane, fixed circular groove center is the center of circle, in sketch, respectively before tibia support
Roundlet arc radius is drawn out away from border 4.5-5mm in side and two directions of left and right, and angle of the large circular arc radius away from border 1.5-2mm is
The bicircular arcs in three directions are stretched adult by two sections of circular arcs of 43-45 degree, circular arc groove depth are formed in tibia support upper surface and solid
Determine circular groove identical；
S34, the same face on the basis of osteotomy tangent plane, fixed circular groove center is the center of circle, in sketch, equally before tibia support
Starting point is just drawn out with left and right directions identical, roundlet arc radius is 3-3.5mm, maximum radius and isocentric circular arc groove phase away from border
Together, angle is the bicircular arcs of 21-22 degree, is drawn into the body that height is circular groove depth half, finally carries out two to the lower surface of body
The withdrawing pattern of secondary different directions, makes intermediate projections, both sides depression, withdrawing pattern degree is 1-3 degree, finally closes body and tibia support upper surface
And.
As preferred technical scheme, step S4 is specially：
S41, the face on the basis of tibia support lower surface, circular groove center are the center of circle, draw the circle that radius is 5-8mm, stretch adult,
Highly it is 25-30mm, carries out withdrawing pattern, gradient is 3-4 degree, is merged with tibia support；
Face on the basis of S42, same following surface, in the left and right away from big cylinder 20-25mm, a radius is drawn respectively is
2.5-3mm roundlet, stretches adult, is highly 6-8mm, big small cylinder is connected with floor, merged with tibia support.
As preferred technical scheme, step S5 is specially：
S51, by the curvilinear stretch of parametrization into tibial insert original shape, be highly 6-8mm；
S52, using tibial insert lower surface as reference plane, into sketch drafting function, using the circular groove center of circle as the center of circle, draw half
Footpath is justified for identical, is drawn into cylinder, highly identical with circular groove depth, is merged with tibial insert lower surface；
S53, the same face on the basis of tibial insert lower surface, circular groove center is the center of circle, in sketch, respectively in tibia support
Front and two directions of left and right draw out that starting point is identical with arc groove, the big 0.1- of small arc-shaped radius ratio tibia support arc groove least radius
0.2mm, large circular arc radius, will than the small 0.1-0.2mm of tibia support arc groove maximum radius, two sections of circular arcs that angle is 20-21 degree
The bicircular arcs stretching adult in three directions, it is highly identical with circular groove depth, equally merge with tibial insert lower surface；
S53, the same face on the basis of tibial insert lower surface, circular groove center is the center of circle, in sketch, equally in tibia support
It is identical that front and left and right directions draw out starting point, the small arc-shaped radius ratio locking mechanism small 0.1-0.2mm of roundlet arc radius, orthodrome
Radius is identical with circular arc body large radius, and angle is the bicircular arcs of 20-21 degree, is drawn into height and tibia support locking mechanism height phase
Same body, finally carries out the withdrawing pattern of different directions twice to the lower surface of body, makes intermediate projections, both sides depression, withdrawing pattern degree and shin
Bone support locking mechanism is identical, finally subtracts each other body with tibia support upper surface.
The present invention compared with prior art, has the following advantages that and beneficial effect：
1st, the invention provides the rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure of a kind of customization,
The stability of total knee prostheses and the quality of complete knee joint operation can fast, easily be improved.
2nd, the Total knee arthroplasty tibia support and tibial insert device made using the rotation clamping type assembling structure of the present invention, energy
For the individual demand of different patients, the life-span of prosthese is improved, " individual's customization " operation is realized.
3rd, the present invention can shorten surgical learning curve, young doctor is also utilized what is provided using the present invention
The Total knee arthroplasty tibia support that rotation clamping type assembling structure makes quickly masters a skill with tibial insert device, implements operation.
Brief description of the drawings
Fig. 1 is using the Total knee arthroplasty tibia support and the trimetric drawing of tibial insert after rotation clamping type Standard；
Fig. 2 (a) and 2 (b) are rotation clamping type Total knee arthroplasty tibia support and the assembling schematic diagram of tibial insert assembling structure；
Fig. 3 (a), Fig. 3 (b), Fig. 3 (c) are respectively that the total knee made according to the rotation clamping type assembling structure of the present invention is put
Change the front view, side view and top view of shin bone rest device；
Fig. 4 (a), Fig. 4 (b), Fig. 4 (c) are respectively that the total knee made according to the rotation clamping type assembling structure of the present invention is put
Change the front view, side view and upward view of tibial insert device；
Fig. 5 is to make Total knee arthroplasty tibia support and tibial insert device stream according to the rotation clamping type assembling structure of the present invention
Cheng Tu.
Drawing reference numeral explanation：1st, fixed cylinder；2nd, circular arc body；3rd, fixed circular groove；4th, arc groove；5th, bone post is positioned.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment
As shown in Fig. 1, Fig. 3 (a)-Fig. 3 (c) and Fig. 4 (a)-Fig. 4 (c), the present embodiment rotation clamping type Total knee arthroplasty shin bone
Support with tibial insert assembling structure, with for：
1), tibial insert lower surface (i.e. with tibia support contact surface), there is a fixed cylinder 1；
2), tibial insert lower surface (i.e. with tibia support contact surface), there are three circular arc bodies 2 with locking mechanism, three
Individual circular arc body 2 is located at immediately ahead of the tibial insert and direction of left and right two respectively；
3), there is a fixed circular groove 3 tibia support upper surface (i.e. with tibial insert contact surface)；
4), tibia support upper surface (i.e. with tibial insert contact surface), there are three arc grooves 4 with locking mechanism, should
Three arc grooves 4 are located at immediately ahead of the tibia support and direction of left and right two respectively；
5), in shin bone tibia support lower surface, there is a positioning bone post 5；.
As shown in Fig. 2 (a), Fig. 2 (b), during assembling, operated according to following two steps：
The first step：The fixation circular groove 3 that fixed cylinder 1 on tibial insert is aligned into tibia support is pressed downward to, and makes tibia support
Fitted completely with tibial insert,
Second：Tibial insert is twisted, circular arc body 2 is rotated in arc groove 4, and border is completely superposed, and is now justified
Locking mechanism on arc groove 4 and circular arc body 2 is come into force, and tibial insert is completely fixed with tibia support.
Wherein, positioning bone post 5 is inserted in patient's shin bone in assembling.
In the present embodiment, the fixed center of circle of circular groove 3 is located at same vertical direction with the center of circle of positioning bone post 1, in assembling
Play auxiliary spacer positioning and prevent pad horizontal direction from moving.
The arc groove 4 makes pad match somebody with somebody rear nothing in rotating dress respectively positioned at the front of tibia support and left and right both direction
Method is in rotary moving, the stability that raising tibia support is assembled with tibial insert.
More consolidated in order to fixed, fixed cylinder 1 need to fix the perfection of circular groove 3 with tibia support and fit, and same circular arc body 2 is locked
Deadlock structure also needs to fit with locking mechanism perfection on arc groove 4.Therefore, locking mechanism is provided with circular arc body and arc groove, is locked
Deadlock structure matches mutually, with the effect for preventing that tibial insert movement from misplacing.
The center of circle of fixed circular groove 3 and the center of circle of positioning bone post 5 are located at same vertical direction, and the depth of fixed circular groove 3 with
Position bone post 5 highly identical, the fixed radius of circular groove 3 is identical with the positioning radius of bone post 5；
The depth of the arc groove 4 is identical with the depth of fixed circular groove 1；The depth of the arc groove 4 also with circular arc body 2
It is highly identical, and the arc groove is located at same straight line with circular arc body starting point, circular arc body angle is no more than the one of the circular arc angle of the v-groove
Half.
As shown in figure 5, being the Total knee arthroplasty tibia support and shin bone that are made according to the rotation clamping type assembling structure of the present invention
The flow chart of gasket device.Total knee arthroplasty tibia support and shin bone that the rotation clamping type assembling structure provided using the present invention is made
Gasket device can be obtained using Fig. 5 flow chart.In Fig. 5, it is complete that the rotation clamping type assembling structure that the present invention is provided makes
Knee replacement tibia support comprises the following steps with tibial insert device：
S1, the shin bone model for setting up based on the kneed Tibial osteotomy medical image data of patient three-dimensional digital.
In particular it is required that obtaining patient's knee joint CT or MRI tomoscan image in advance.Then, by dissecting engineering weight
Build software and import CT the or MRI tomoscan images, there is the feature of different gray values according to bone and soft tissue, carry out image point
Cut and repair, calculate the shin bone model for obtaining three-dimensional digital, and store standby.Dissection engineering employed in the present invention is rebuild
Software can be Mimics 17.0 or other same type softwares.In a preferred embodiment of the invention, based on Mimics
17.0 realize the step, therefore in advance preserve patient's knee joint CT or MRI tomoscan image of acquisition in dicom format,
Then it is conducted into medical image software Mimics 17.0, obtained after three-dimensional reconstruction the shin bone model of three-dimensional digital,
Store standby with STL forms.
S2, model imported into design software, Tibial osteotomy face is set to reference plane, osteotomy is obtained using section curve function
Cross section profile data, by data parameterization to enter edlin.Design software employed in the present invention for UG_NX10 or its
His same type software.
Specifically, step S2 can be realized further by following steps：
S21, by design software UG_NX10 import with STL forms preserve shin bone model after, use mobile object work(
Can, osteotomy tangent plane is overlapped with reference plane, osteotomy tangent plane is set to reference plane.
S22, using section curve function, obtain the section curve of osteotomy tangent plane, it is bent that section curve is fitted into parametrization
Line, to carry out the editor of next step.
S3, according to cross-section data, the assembling structure at design tibia support position.Specifically, step S3 can further lead to
Cross following steps realization：
S31, by the curvilinear stretch of parametrization into tibia support original shape, be highly 4-6mm；
S32, using osteotomy tangent plane as reference plane, into sketch drafting function, find shin bone section lumen centers, draw radius
For 3-5mm circle, cylinder is drawn into, circular groove is formed in tibia support upper surface, depth is 1.8-2mm；
S33, the same face on the basis of osteotomy tangent plane, circular groove center is the center of circle, in sketch, respectively in front of tibia support and
Roundlet arc radius is drawn out away from border 4.5-5mm in the direction of left and right two, and angle of the large circular arc radius away from border 1.5-2mm is 43-45
The bicircular arcs in three directions are stretched adult by two sections of circular arcs of degree, and circular arc groove depth and circular groove phase are formed in tibia support upper surface
Together；
S34, the same face on the basis of osteotomy tangent plane, circular groove center is the center of circle, in sketch, equally in front of tibia support and
It is identical that left and right directions draws out starting point, and roundlet arc radius is 3-3.5mm away from border, and maximum radius is identical with isocentric circular arc groove, angle
Spend for the bicircular arcs of 21-22 degree, be drawn into the body that height is circular groove depth half, finally the lower surface of body is carried out different twice
The withdrawing pattern in direction, makes intermediate projections, and both sides are recessed, and withdrawing pattern degree is 1-3 degree, finally merges body with tibia support upper surface.
S4, the guide pillar in tibia support bottom design auxiliary positioning and fixation；The guide pillar includes big two small three cylinders
Body is constituted, and big cylinder has certain pattern draft, positioned at bone support lower surface center, and it is left that small cylinder point is listed in big cylinder
The right side, three is connected by floor.Specifically, step S4 can be realized further by following steps：
S41, the face on the basis of tibia support lower surface, circular groove center are the center of circle, draw the circle that radius is 5-8mm, stretch adult,
Highly it is 25-30mm, carries out withdrawing pattern, gradient is 3-4 degree, is merged with tibia support；
Face on the basis of S42, same following surface, in the left and right away from big cylinder 20-25mm, a radius is drawn respectively is
2.5-3mm roundlet, stretches adult, is highly 6-8mm, big small cylinder is connected with floor, merged with tibia support.
S5, correspondence tibia support, corresponding assembling structure is designed in tibial insert.Specifically, step S5 can be further
Realized by following steps：
S51, by the curvilinear stretch of parametrization into tibial insert original shape, be highly 6-8mm；
S52, using pad lower surface as reference plane, into sketch drafting function, using the circular groove center of circle as the center of circle, draw radius be
Identical is justified, and is drawn into cylinder, highly identical with circular groove depth, is merged with pad lower surface；
S53, the same face on the basis of pad lower surface, circular groove center is the center of circle, in sketch, respectively in front of tibia support
Draw out that starting point is identical with arc groove, the big 0.1- of small arc-shaped radius ratio tibia support arc groove least radius with the direction of left and right two
0.2mm, large circular arc radius, will than the small 0.1-0.2mm of tibia support arc groove maximum radius, two sections of circular arcs that angle is 20-21 degree
The bicircular arcs stretching adult in three directions, it is highly identical with circular groove depth, equally merge with pad lower surface；
S54, the same face on the basis of pad lower surface, circular groove center is the center of circle, in sketch, equally in front of tibia support
Draw out starting point with left and right directions identical, the small arc-shaped radius ratio locking mechanism small 0.1-0.2mm of roundlet arc radius, large circular arc radius
It is identical with circular arc body large radius.Angle is the bicircular arcs of 20-21 degree, is drawn into height and tibia support locking mechanism height identical
Body, finally carries out the withdrawing pattern of different directions twice to the lower surface of body, makes intermediate projections, both sides depression, withdrawing pattern degree and tibia support
Locking mechanism is identical, finally subtracts each other body with tibia support upper surface.
S6, according to osteotomy data, design tibial insert upper end (with prosthese contact portion).
S7, the rotation clamping type Total knee arthroplasty tibia support and tibial insert for being produced using rapid shaping technique entity are assembled
Constructional device.For example, the metal material such as plastics or selective laser fusing printing stainless steel can be sterilized using the sintering printing of light constituency
Material.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by above-described embodiment of the invention
Limitation, other any Spirit Essences without departing from the present invention and the change made under principle, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (10)
1. one kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure, it is characterised in that in the upper of tibia support
Circular groove (3) and multiple arc grooves (4) with locking mechanism are fixed in surface provided with one, and the fixed circular groove (3) is arranged on shin bone
The center of upper surface is held in the palm, a positioning bone post (5) is provided with the lower surface of tibia support；One is provided with the lower surface of tibial insert
Fixed cylinder (1) and multiple circular arc bodies (2) matched with arc groove；During assembling, first by the fixed cylinder (1) on tibial insert
The fixation circular groove (3) of alignment tibia support is pressed downward to, and tibia support is fitted completely with tibial insert, is then twisted tibial insert,
Circular arc body (2) is set to rotate in the arc groove (4), and border is completely superposed, now the lock on arc groove (4) and circular arc body (2)
Dead mechanism in force, tibial insert is completely fixed with tibia support.
2. clamping type Total knee arthroplasty tibia support and tibial insert assembling structure are rotated according to claim 1, it is characterised in that
The arc groove (4) is three, and one of arc groove is arranged on the front of tibia support, and two other arc groove is arranged on shin
The left and right sides of bone support；The circular arc body (2) be three, one of circular arc body be arranged on tibial insert lower surface just before
Side, two other circular arc body is arranged on the left and right sides of tibial insert lower surface.
3. clamping type Total knee arthroplasty tibia support and tibial insert assembling structure are rotated according to claim 1, it is characterised in that
Fixed circular groove (3) center of circle and positioning bone post (5) center of circle are located at same vertical direction, and fix the depth of circular groove (3) with determining
Position bone post (5) is highly identical, and fixed circular groove (3) radius is identical with positioning bone post (5) radius；
The depth of the arc groove (4) is identical with the depth of fixed circular groove (3)；The depth of the arc groove (4) also with circular arc body
(2) height is identical, and the arc groove (4) is located at same straight line with circular arc body (2) starting point, and circular arc body angle is no more than circular arc
The half of the angle of the v-groove.
4. clamping type Total knee arthroplasty tibia support and tibial insert assembling structure are rotated according to claim 1, it is characterised in that
Show to be provided with the guide pillar for being used for positioning and fix under the tibia support；The guide pillar includes big two small three cylinders, great circle
Cylinder has certain pattern draft, positioned at tibia support lower surface center, and small cylinder point is listed in big cylinder or so, and three passes through
Floor is connected.
5. clamping type Total knee arthroplasty tibia support and tibial insert assembling structure are rotated according to claim 1, it is characterised in that
Arc groove (4) on the tibia support is evenly distributed centered on fixing circular groove (3), and the arc length of arc groove is identical with arc chord angle.
6. a kind of rotate clamping type Total knee arthroplasty tibia support and the implementation method of tibial insert assembling structure, it is characterised in that bag
Include following step：
S1, the shin bone model for being set up based on the kneed Tibial osteotomy medical image data of patient three-dimensional digital, are obtained in advance
Patient's knee joint CT or MRI tomoscan image, then, CT the or MRI tomoscans is imported by dissecting engineering reconstruction software
Image, the feature according to bone and soft tissue with different gray values carries out image segmentation and repairing, calculates and obtains three-dimensional digital
Shin bone model, and store standby；
S2, model imported into design software, Tibial osteotomy face is set to reference plane, osteotomy section is obtained using section curve function
Outline data, by data parameterization to enter edlin
S3, according to cross-section data, the assembling structure at design tibia support position；
S4, the guide pillar in tibia support bottom design auxiliary positioning and fixation；The guide pillar includes big two small three cylinder groups
Into big cylinder has certain pattern draft, positioned at bone support lower surface center, and small cylinder point is listed in big cylinder or so, three
Person is connected by floor；
S5, correspondence tibia support, corresponding assembling structure is designed in tibial insert；
S6, according to osteotomy data, design tibial insert upper end；
S7, the rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure for producing using rapid shaping technique entity
Device.
7. clamping type Total knee arthroplasty tibia support and the implementation method of tibial insert assembling structure are rotated according to claim 6,
Characterized in that, in step S1, the dissection engineering reconstruction software used is Mimics 17.0, therefore the advance patient by acquisition
Knee joint CT or MRI tomoscan image is preserved in dicom format, is then conducted into medical image software Mimics 17.0
In, obtained after three-dimensional reconstruction the shin bone model of three-dimensional digital, store standby with STL forms.
8. clamping type Total knee arthroplasty tibia support and the implementation method of tibial insert assembling structure are rotated according to claim 6,
Characterized in that, step S3 is specially：
S31, by the curvilinear stretch of parametrization into tibia support original shape, be highly 4-6mm；
S32, using osteotomy tangent plane as reference plane, into sketch drafting function, find shin bone section lumen centers, picture radius is 3-
5mm circle, is drawn into cylinder, forms circular groove in tibia support upper surface, depth is 1.8-2mm；
S33, the same face on the basis of osteotomy tangent plane, fixed circular groove center is the center of circle, in sketch, respectively in front of tibia support and
Roundlet arc radius is drawn out away from border 4.5-5mm in the direction of left and right two, and angle of the large circular arc radius away from border 1.5-2mm is 43-45
The bicircular arcs in three directions are stretched adult by two sections of circular arcs of degree, and circular arc groove depth is formed in tibia support upper surface and is justified with fixed
Groove is identical；
S34, the same face on the basis of osteotomy tangent plane, fixed circular groove center is the center of circle, in sketch, equally in front of tibia support and
It is identical that left and right directions draws out starting point, and roundlet arc radius is 3-3.5mm away from border, and maximum radius is identical with isocentric circular arc groove, angle
Spend for the bicircular arcs of 21-22 degree, be drawn into the body that height is circular groove depth half, finally the lower surface of body is carried out different twice
The withdrawing pattern in direction, makes intermediate projections, and both sides are recessed, and withdrawing pattern degree is 1-3 degree, finally merges body with tibia support upper surface.
9. clamping type Total knee arthroplasty tibia support and the implementation method of tibial insert assembling structure are rotated according to claim 6,
Characterized in that, step S4, is specially：
S41, the face on the basis of tibia support lower surface, circular groove center are the center of circle, draw the circle that radius is 5-8mm, stretch adult, height
For 25-30mm, withdrawing pattern is carried out, gradient is 3-4 degree, is merged with tibia support；
Face on the basis of S42, same following surface, in the left and right away from big cylinder 20-25mm, it is 2.5- that a radius is drawn respectively
3mm roundlet, stretches adult, is highly 6-8mm, big small cylinder is connected with floor, merged with tibia support.
10. clamping type Total knee arthroplasty tibia support and the implementation method of tibial insert assembling structure are rotated according to claim 6,
Characterized in that, step S5 is specially：
S51, by the curvilinear stretch of parametrization into tibial insert original shape, be highly 6-8mm；
S52, using tibial insert lower surface as reference plane, into sketch drafting function, using the circular groove center of circle as the center of circle, draw radius be
Identical is justified, and is drawn into cylinder, highly identical with circular groove depth, is merged with tibial insert lower surface；
S53, the same face on the basis of tibial insert lower surface, circular groove center is the center of circle, in sketch, respectively in front of tibia support
Draw out that starting point is identical with arc groove, the big 0.1- of small arc-shaped radius ratio tibia support arc groove least radius with the direction of left and right two
0.2mm, large circular arc radius, will than the small 0.1-0.2mm of tibia support arc groove maximum radius, two sections of circular arcs that angle is 20-21 degree
The bicircular arcs stretching adult in three directions, it is highly identical with circular groove depth, equally merge with tibial insert lower surface；
S53, the same face on the basis of tibial insert lower surface, circular groove center is the center of circle, in sketch, equally in front of tibia support
Draw out starting point with left and right directions identical, the small arc-shaped radius ratio locking mechanism small 0.1-0.2mm of roundlet arc radius, large circular arc radius
Identical with circular arc body large radius, angle is the bicircular arcs of 20-21 degree, is drawn into height and tibia support locking mechanism height identical
Body, finally carries out the withdrawing pattern of different directions twice to the lower surface of body, makes intermediate projections, both sides depression, withdrawing pattern degree and tibia support
Locking mechanism is identical, finally subtracts each other body with tibia support upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354916.0A CN107174378B (en) | 2017-05-19 | 2017-05-19 | Rotary clamping type full knee replacement tibia support and tibia gasket assembly structure and implementation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710354916.0A CN107174378B (en) | 2017-05-19 | 2017-05-19 | Rotary clamping type full knee replacement tibia support and tibia gasket assembly structure and implementation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107174378A true CN107174378A (en) | 2017-09-19 |
| CN107174378B CN107174378B (en) | 2023-04-21 |
Family
ID=59831524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710354916.0A Active CN107174378B (en) | 2017-05-19 | 2017-05-19 | Rotary clamping type full knee replacement tibia support and tibia gasket assembly structure and implementation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107174378B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107997857A (en) * | 2017-12-26 | 2018-05-08 | 北京科仪邦恩医疗器械科技有限公司 | A kind of sealed knee joint tibial component of W types |
| CN113397768A (en) * | 2021-07-16 | 2021-09-17 | 北京力达康科技有限公司 | Rotary platform knee joint prosthesis |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002951205A0 (en) * | 2002-09-05 | 2002-09-19 | Lockwood Security Products Pty Limited | A lock for a sliding door |
| CN1423999A (en) * | 2002-12-31 | 2003-06-18 | 周星 | Intellectual fixing device by shape memory alloy for plastic surgery |
| CN201668541U (en) * | 2010-04-23 | 2010-12-15 | 创生医疗器械(江苏)有限公司 | Knee joint rotating platform prosthesis |
| CN102232883A (en) * | 2010-04-23 | 2011-11-09 | 创生医疗器械（中国）有限公司 | Rotating platform false body for knee joint |
| CN103239303A (en) * | 2013-05-27 | 2013-08-14 | 北京市春立正达医疗器械股份有限公司 | Anatomical tibial plateau prosthesis |
| CN103860293A (en) * | 2014-03-07 | 2014-06-18 | 北京大学第三医院 | Individualized reversal design and manufacturing method for full knee joint replacing prosthesis |
| CN103860295A (en) * | 2014-03-07 | 2014-06-18 | 北京大学第三医院 | Digital design and manufacturing method for knee joint tibia prosthesis |
| CN104546060A (en) * | 2015-01-26 | 2015-04-29 | 北京大学第三医院 | Patella osteotomy navigation template for knee arthroplasty and manufacture method |
| CN204542471U (en) * | 2015-01-23 | 2015-08-12 | 北京中安泰华科技有限公司 | A kind of card slot type connects knee-joint prosthesis |
| CN104840279A (en) * | 2015-05-26 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Knee joint prosthesis |
| CN204909727U (en) * | 2015-08-03 | 2015-12-30 | 北京威高亚华人工关节开发有限公司 | Shin bone replacement false body |
-
2017
- 2017-05-19 CN CN201710354916.0A patent/CN107174378B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2002951205A0 (en) * | 2002-09-05 | 2002-09-19 | Lockwood Security Products Pty Limited | A lock for a sliding door |
| CN1423999A (en) * | 2002-12-31 | 2003-06-18 | 周星 | Intellectual fixing device by shape memory alloy for plastic surgery |
| CN201668541U (en) * | 2010-04-23 | 2010-12-15 | 创生医疗器械(江苏)有限公司 | Knee joint rotating platform prosthesis |
| CN102232883A (en) * | 2010-04-23 | 2011-11-09 | 创生医疗器械（中国）有限公司 | Rotating platform false body for knee joint |
| CN103239303A (en) * | 2013-05-27 | 2013-08-14 | 北京市春立正达医疗器械股份有限公司 | Anatomical tibial plateau prosthesis |
| CN103860293A (en) * | 2014-03-07 | 2014-06-18 | 北京大学第三医院 | Individualized reversal design and manufacturing method for full knee joint replacing prosthesis |
| CN103860295A (en) * | 2014-03-07 | 2014-06-18 | 北京大学第三医院 | Digital design and manufacturing method for knee joint tibia prosthesis |
| CN204542471U (en) * | 2015-01-23 | 2015-08-12 | 北京中安泰华科技有限公司 | A kind of card slot type connects knee-joint prosthesis |
| CN104546060A (en) * | 2015-01-26 | 2015-04-29 | 北京大学第三医院 | Patella osteotomy navigation template for knee arthroplasty and manufacture method |
| CN104840279A (en) * | 2015-05-26 | 2015-08-19 | 北京爱康宜诚医疗器材股份有限公司 | Knee joint prosthesis |
| CN204909727U (en) * | 2015-08-03 | 2015-12-30 | 北京威高亚华人工关节开发有限公司 | Shin bone replacement false body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107997857A (en) * | 2017-12-26 | 2018-05-08 | 北京科仪邦恩医疗器械科技有限公司 | A kind of sealed knee joint tibial component of W types |
| CN113397768A (en) * | 2021-07-16 | 2021-09-17 | 北京力达康科技有限公司 | Rotary platform knee joint prosthesis |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107174378B (en) | 2023-04-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES2382205T3 (en) | Procedure, system, device and software for the creation of a prosthesis stem | |
| CN105250062B (en) | A kind of 3D printing bone orthopedic brace preparation method based on medical image | |
| CN105852985B (en) | The manufacturing method of personalized orthopedic positioning guide plate | |
| CN103099680B (en) | Production method for guide template | |
| CN101420911B (en) | Patient selectable arthroplasty device and surjical tool | |
| CN104546060B (en) | Patella osteotomy navigation template for knee arthroplasty and manufacture method | |
| CN103099669B (en) | Single-side pedicle screw-driving auxiliary device and manufacturing method thereof | |
| CN106264731A (en) | A kind of method based on point-to-point registration technique virtual knee joint single condyle replacement model construction | |
| TW200938154A (en) | System and method for manufacturing arthroplasty jigs | |
| CN104739548A (en) | System for designing individual artificial knee joint prosthesis based on parameter driving | |
| CN108433851A (en) | A kind of preparation method of upper section of tibia tumorous type prosthese | |
| CN107174378A (en) | One kind rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure and implementation method | |
| Ejnisman et al. | Three-dimensional printing in orthopedics: from the basics to surgical applications | |
| CN104783861A (en) | Total knee arthroplasty distal femur multifunctional bone cutting guide plate device and manufacturing method thereof | |
| CN205831900U (en) | A kind of Pedicle Screw Placement in Lower Cervical enters to follow closely guiding die plate | |
| Manmadhachary et al. | Manufacturing of customized implants for orbital fractures using 3D printing | |
| CN104881511B (en) | A kind of production method of human face's prosthesis three-dimensional data model, cloudy shape flask and its prosthesis | |
| CN207605041U (en) | A kind of rotation clamping type Total knee arthroplasty tibia support and tibial insert assembling structure | |
| CN110025372A (en) | A kind of 3D printing point contact pedicle of vertebral arch guide plate production method | |
| Ye et al. | Automatic design and fabrication of a custom ocular prosthesis using 3D volume difference reconstruction (VDR) | |
| CN204708929U (en) | The deep guide plate arrangement of a kind of Total knee arthroplasty proximal tibia | |
| CN109830157A (en) | A kind of production method of 5 sacrum of waist, 1 anterior stabilization model | |
| CN106037993A (en) | Sacrum prosthesis | |
| Brncick | Computer automated design and computer automated manufacture | |
| CN204562290U (en) | The deep guide plate arrangement of a kind of Total knee arthroplasty distal femur |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |