CN107822746A - Personalized class trabecular bone structure knee-joint prosthesis and preparation method - Google Patents
Personalized class trabecular bone structure knee-joint prosthesis and preparation method Download PDFInfo
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- CN107822746A CN107822746A CN201711139376.0A CN201711139376A CN107822746A CN 107822746 A CN107822746 A CN 107822746A CN 201711139376 A CN201711139376 A CN 201711139376A CN 107822746 A CN107822746 A CN 107822746A
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- knee
- bone
- joint prosthesis
- pad
- shin bone
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Classifications
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- 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
-
- 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
- A61F2/3877—Patellae or trochleae
-
- 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
- A61F2/30—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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
-
- 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
- A61F2002/30943—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 mathematical models
-
- 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
- A61F2002/30985—Designing or manufacturing processes using three dimensional printing [3DP]
Abstract
The invention discloses a kind of personalized class trabecular bone structure knee-joint prosthesis, including tibia support and shin bone pad；Shin bone pulp cavity is formed between tibia support and shin bone pad；Shin bone pulp cavity is provided with bone trabecula network.Knee-joint prosthesis upper and lower ends profile meets human anatomic structure and is more bonded with pulp cavity.The present invention alleviates product weight using PEEK materials, reduces stress shielding, avoids the situation for causing bone information and prosthetic loosening.Induction installation is installed on shin bone pad part, governor motion and control structure are arranged in tibia support simultaneously, the purpose for installing this induction installation is by the pressure between condyle of femur and shin bone pad that is self-regulated, make pad receive the pressure of lateral femoral condyle prosthesis part more to tend to balance, so that by uniform pressure inside and outside the bone of distal femur and proximal tibia, bone-loss caused by eliminating the factors such as habits and customs and prosthese failure, so as to improve the medium-term and long-term life-span of patient's prosthese.
Description
Technical field
The present invention relates to artificial knee joint replacement equipment technical field, particularly a kind of personalized class trabecular bone structure knee closes
Save prosthese.
Background technology
Osteoarthritis is that one kind with articular cartilage degenerative disease is changed into core, involve sclerotin and including synovial membrane, capsular ligament and
The chronic inflammation of joint other structures, it is a kind of aseptic, chronic, progress assault sexually joint, the particularly disease of weight-bearing joints.
With the increase of population average life span and the aggravation of aging, particularly various B＆J diseases, the morbidity of degenerative disease
Rate constantly increases, and treats whole latter stage at present or serious pathologic changes of knee joint is most effective, most successful method is that artificial knee closes
The 10--15 annual survival rate 85%-90% of displacement technique, at present TKA prostheses are saved, it will be obviously improved motor function and the life of patient
Deposit quality.
It is rigid directly contact, the i.e. femur of metal in knee joint replacement prosthesis, between tibial component and femoral component
It is hard contact between condyle and tibial plateau part and polyethylene pad, elastic work is realized in the only faint deformation by polythene material
Can, the serious wear between condyle of femur and pad, reduce life-span of pad, and the faint deformation of pad can not realize day
The function of right meniscus, makes troubles after being implanted into human body to patient.
Knee-joint prosthesis defect of the prior art is, after adding elastomeric element, is accomplished that flexible solid
Determine knee joint, i.e., can not realize rotation, so allow for that there is higher contact stress between condyle of femur and pad, edge occur
Load, stress concentration is formed, so as to cause the abrasion of polyethylene.
Meanwhile the cooperation of the tibia support in most of knee-joint prosthesis and shin bone pad is adopted and is screwed or clasp type knot
Structure, adopt and be screwed, destroy the overall structure of shin bone pad, influence the service life of product.Using clasp type structure, although
The overall structure of shin bone pad is remained, but in order to increase the intensity of grab, adds the thickness and shin bone pad of tibia support platform
Thickness, add the weight of product, cause the increase of production cost, while add the burden of patient.
Polyether-ether-ketone (PEEK) is a kind of polymer resin material, possesses good wear-resisting, high temperature resistant, good mechanicalness
Can with anti-fatigue performance and be easy to processing etc. excellent combination property, be widely used in medical implant.The bullet of PEEK materials
Property modulus be the year-on-year titanium alloy vitalliums of 3.8Gpa, PEEK and cortex bone 17.6Gpa are more closely, also mitigate production simultaneously
Product weight, reduces stress shielding, avoids the situation for causing bone information and prosthetic loosening.Simultaneously in installation process of performing the operation, more
It is convenient, it is faster.
Fusion sediment technology (FDM) 3D printing increases material manufacturing technology is very extensive in medical industry application, and melting is heavy
Product technology (FDM) technology passes through the superposition of layering one by CAD (Computer Aided Design) and manufacture
Principle, PEEK materials, the workpiece designed by direct forming, without moulds of industrial equipment, not by part are melted with the higher temperature of energy
The diversity limitation of structure.By the plurality of advantages of 3D printing, the 3D printing personalization class trabecular bone structure knee-joint prosthesis
It is bound to more conform to patients ' demand, improves quality of life of patients.
The content of the invention
The purpose of the present invention is to propose to a kind of 3D printing personalization class trabecular bone structure knee-joint prosthesis；The knee-joint prosthesis
Generated by PEEK materials 3D entirety printing technique, both met Human Physiology radian, while reduce stress shielding, avoided
Cause the situation of bone information and prosthetic loosening, moreover it is possible to beneficial to later stage Bone Ingrowth.
The purpose of the present invention is achieved through the following technical solutions：
Personalized class trabecular bone structure knee-joint prosthesis provided by the invention, including tibia support and shin bone pad；The shin bone
Shin bone pulp cavity is formed between support and shin bone pad；The shin bone pulp cavity is provided with bone trabecula network.
Further, tibia support and the shin bone pad passes through 3D printer one printing shaping from PEEK materials.
Further, the bone trabecula network parameter is：Porosity 60%-90%, 1200 μm ± 200 μm of aperture.
Further, in addition to induction installation 3, governor motion 4 and control device 5, the induction installation are arranged at shin bone pad
On, the governor motion is arranged on tibia support, the pressure letter that the induction installation is used to obtain between condyle of femur and shin bone pad
Number, the pressure signal is input to control device, and the induction installation and governor motion are connected with control device, the control dress
Put for receiving pressure signal and carrying out processing generation pulse signal, the pulse signal is input to governor motion, the regulation
Mechanism is used to adjust condyle of femur and shin bone pad position.
Further, pad is arranged between tibia support and the shin bone pad, spacing monitoring device, institute are set on the pad
Spacing monitoring device is stated to be used to sense the distance signal between tibia support and the shin bone pad；The induction mechanism include stationary contact,
Movable contact, spring part and triggers circuit；
Described spring part one end is arranged on shin bone pad, and the spring part other end sets stationary contact；The movable contact is set
It is placed on tibia support, the triggers circuit is connected with stationary contact and movable contact so as to form closed-loop path structure respectively.
Further, the triggers circuit includes power supply, signal projector；Described power supply one end connects with signal projector one end
Connect；The signal projector other end is connected with stationary contact；The power supply other end is connected with movable contact.
Present invention also offers a kind of personalized class trabecular bone structure knee-joint prosthesis preparation method, comprise the following steps：
S01, obtain medical image data：Knee joint CT examination is carried out to patient, obtains operative region whole skeleton data,
Save as the recognizable form of medical image；
S02, obtain knee joint Medical Imaging parameter：Led according to whole skeleton models of operative region and establish operative region
Knee joint threedimensional model, the iconography parameter of operative region is measured, with condyle of femur before and after acquisition and the related chi of shin bone part
It is very little, and achieve；
S03, the foundation of knee-joint prosthesis threedimensional model：Each model knee-joint prosthesis to be selected is established, according to knee joint shadow
The foundation for realizing the threedimensional model of each model prosthese as learning parameter；
S04, choose the prosthese model of operation：It is soft that the knee-joint prosthesis of each model to be selected is directed respectively into threedimensional model
In part, contrasted with knee joint skeleton model, implement analogue simulation operation, assess simulation postoperative effect, so as to choose operation
Knee-joint prosthesis model；
S05, personalized 3D printing personalization class trabecular bone structure knee-joint prosthesis finished product make：The knee joint of selection is false
Body three-dimensional models are imported in 3D printing software, using PEEK powder as raw material, are printed as into FDM technology 3D printer
Product.
Further, knee joint threedimensional model in the step S02 is through the following steps that to establish：
Each model knee-joint prosthesis to be selected is established using 3D sculpting software UG11.0, is influenceed to learn parameter according to knee joint
The prosthese of initial option one or more model, further according to shin bone Pulp chamber, size, position relationship, establish respectively each
The initial configuration model of knee-joint prosthesis, then knee-joint prosthesis is matched with pulp cavity model in Mimics18.0, profit
With Boolean calculation so as to reach the matching of knee joint tibial part and shin bone pulp cavity, so as to realize the three-dimensional mould of each model prosthese
The foundation of type；
By adopting the above-described technical solution, the present invention has the advantage that：
Personalized class trabecular bone structure knee-joint prosthesis provided by the invention, including tibia support and shin bone pad；Tibia support and
Shin bone pad passes through 3D printing one printing shaping from PEEK materials respectively；The knee-joint prosthesis upper and lower ends profile meets people
Body anatomical structure is more bonded with pulp cavity, the PEEK materials, and modulus of elasticity 3.8Gpa and cortex bone 17.6Gpa is more closely, simultaneously
Product weight is also mitigated, reduces stress shielding, avoids the situation for causing bone information and prosthetic loosening.
The knee-joint prosthesis material is PEEK, and the knee-joint prosthesis and tibia contact face are class trabecular bone structure, are had
Beneficial to later stage Bone Ingrowth, prosthese is bonded completely with shin bone pulp cavity contact portion, more conforms to human anatomy.Class bone trabecula simultaneously
Structure has good tension, measuring body mechanical property, both alleviates product weight, reduces production cost again.
Other advantages, target and the feature of the present invention will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the present invention.The target and other advantages of the present invention can by following specification realizing and
Obtain.
Brief description of the drawings
The brief description of the drawings of the present invention is as follows.
Fig. 1 is 3D printing personalization class trabecular bone structure knee-joint prosthesis schematic diagram provided in an embodiment of the present invention；
In figure, 1 is shin bone pad, and 2 be tibia support, and 3 be induction installation, and 4 be governor motion, and 5 be control device.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Embodiment 1
As illustrated, the personalized class trabecular bone structure of the present embodiment offer and the knee being accustomed to adaptive minimal invasive treatment
Articular prosthesis；This knee-joint prosthesis is made up of PEEK materials 3D entirety printing technique, has both met Human Physiology radian, simultaneously
Stress shielding is reduced, avoids the situation for causing bone information and prosthetic loosening, moreover it is possible to beneficial to later stage Bone Ingrowth；It is adaptive in order to realize
Minimal invasive treatment's custom function this purpose is answered, it is special to be mounted with induction installation on shin bone pad part, for sensing condyle of femur and shin
Pressure between bone support, governor motion are arranged on tibia support part, are carried out for the position of condyle of femur and tibia support on position
Adjustment, controlling organization, induction mechanism and governor motion be connected with controlling organization, and controlling organization receives induction mechanism transmission
Signal be adjusted the position of condyle of femur and tibia support.The purpose for installing this induction installation is by the condyle of femur that is self-regulated
The pressure between shin bone pad, pad is received the pressure of lateral femoral condyle prosthesis part and more tend to balance so that distal femur and
By uniform pressure inside and outside the bone of proximal tibia, bone-loss caused by eliminating the factors such as habits and customs and prosthese lose
Effect, so as to improve the medium-term and long-term life-span of patient's prosthese.
The monoblock type 3D printing personalization class trabecular bone structure knee-joint prosthesis that the present embodiment provides, monoblock type PEEK materials
3D printing；The prosthese and shin bone pulp cavity contact portion are bone trabecula network；The 3D printing personalization class bone trabecula knot
Structure knee-joint prosthesis is by PEEK3D printing devices (FDM) integral printing shaping.
The 3D printing personalization class trabecular bone structure knee-joint prosthesis that the present embodiment provides pastes completely with pulp cavity contact portion
Close, meet human body pulp cavity physiologic radian, contact surface is trabecular bone structure, can obtain a frictional interface and micropore is advantageous to
Later stage Bone Ingrowth.
The present embodiment is porosity 60%-90% the parameter adjustment of bone trabecula network, 600 μm ± 100 μm of aperture；Hole
Bulk strength can greatly enhance compared to before after the adjustment of footpath, be shown according to relevant experimental data, porosity is in 60%-90%, hole
Also there is good osteoinductive in footpath in 600 μm ± 100 μm of micropore, stronger with bone interface frictional property, can be obtained after product implantation
The stability of early stage is obtained, shortens patient and recovers the cycle.
Shown in reference picture 1, according to the present invention, there is provided a kind of knee-joint prosthesis, including shin bone pad 1, tibia support 2, sensing
Device 3, governor motion 4, controlling organization 5, tibia support and shin bone pad are mounted together using male-female engagement first during installation, are
The pressure between condyle of femur and shin bone pad is obtained, induction installation is provided with shin bone pad, when induction installation senses pressure after,
Convert the pressure to electric signal and pass to controlling organization, induction mechanism and adjustment structure are connected with controlling organization, controlling organization
Receive signal and handled, a pulse signal, Tiao Jie mechanisms pair are sent to the governor motion installed in tibia support after processing
A part of condyle of femur and shin bone pad position carries out tune knot, so as to realize the self-regulating function of knee-joint prosthesis.
Pad is arranged between tibia support and the shin bone pad, spacing monitoring device, the spacing are set on the pad
Monitoring device is used to sense the distance signal between tibia support and the shin bone pad；The induction mechanism include stationary contact, movable contact,
Spring part and triggers circuit；Described spring part one end is arranged on shin bone pad, and the spring part other end sets stationary contact；It is described
Movable contact is arranged on tibia support, and the triggers circuit is connected with stationary contact and movable contact so as to form closed-loop path knot respectively
Structure.The triggers circuit includes power supply, signal projector；Described power supply one end is connected with signal projector one end；The signal
The transmitter other end is connected with stationary contact；The power supply other end is connected with movable contact.The power supply includes wireless charging circuit
And rechargeable battery, the wireless charging circuit are connected with rechargeable battery, the wireless charging circuit include microwave launcher and
Microwave receiving device；The microwave receiving device and rechargeable battery are arranged inside tibia support, the microwave launcher with it is micro-
Separate, be arranged at outside whole prosthese during wave receiving device, coordinated with the microwave receiving device in tibia support, for charging
Battery charges.The wireless charging circuit of the present embodiment can be realized using circuit of the prior art, can such as use application
A kind of wireless transceiver of entitled miniature recyclable charging, the technical scheme disclosed in Application No. 201520754215 are come real
It is existing.The triggers circuit includes
Switching signal processing circuit, setting member, control chip and wireless signal transmitting module；The switching signal processing
Circuit pre-processes the switching signal generated when the movable contact connect with stationary contact, and the switching signal processing circuit with set
The output end for putting element is connected respectively to control chip, and the output end of the control chip is connected to wireless signal transmitting module.
The setting member is toggle switch；The pretreatment can include being filtered signal processing and enhanced processing etc..
Embodiment 2
The 3D printing personalization class trabecular bone structure knee-joint prosthesis that the present embodiment provides, is PEEK material 3D printings；
The prosthese and shin bone pulp cavity contact portion are bone trabecula network.
The system for the personalized 3D printing 3D printing personalization class trabecular bone structure knee-joint prosthesis of customization that the present embodiment provides
Following steps are specifically included as method：
S01, obtain medical image data：Patient carries out knee joint CT examination, obtains operative region whole skeleton data, protects
Save as the recognizable form of medical image；
S02, obtain knee joint Medical Imaging parameter：Whole skeleton models of operative region are imported into medical software
Mimis18.0, the knee joint threedimensional model of operative region is inversely established, measuring the influence parameter of operative region, to obtain
The relative dimensions of front and rear condyle of femur and shin bone part, and achieve；
S03, the foundation of knee-joint prosthesis threedimensional model：Each model knee to be selected is established using 3D sculpting software UG11.0
Articular prosthesis, influenceed to learn the prosthese of parameter initial option one or more model according to knee joint, further according to shin bone pulp cavity shape
State, size, position relationship, the initial configuration model of each knee-joint prosthesis are established respectively, then knee in Mimics18.0
Articular prosthesis is matched with pulp cavity model, using Boolean calculation so as to reaching of knee joint tibial part and shin bone pulp cavity
Match somebody with somebody, so as to realize the foundation of the threedimensional model of each model prosthese；
S04, choose the prosthese model of operation：It is soft that the knee-joint prosthesis of each model to be selected is directed respectively into threedimensional model
In part, contrasted with knee joint skeleton model, implement analogue simulation operation, assess simulation postoperative effect, so as to choose operation
Knee-joint prosthesis model；
S05, personalized 3D printing personalization class trabecular bone structure knee-joint prosthesis finished product make：The knee joint of selection is false
Body three-dimensional models are imported in 3D printing software, using PEEK powder as raw material, are printed as into FDM technology 3D printer
Product.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect:
Finally illustrate, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted, although with reference to compared with
The present invention is described in detail good embodiment, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should cover in the present invention
Protection domain among.
Claims (8)
1. personalized class trabecular bone structure knee-joint prosthesis, it is characterised in that：Including tibia support and shin bone pad；The tibia support and
Shin bone pulp cavity is formed between shin bone pad；The shin bone pulp cavity is provided with bone trabecula network.
2. personalized class trabecular bone structure knee-joint prosthesis as claimed in claim 1, it is characterised in that：The tibia support and shin
Bone pad passes through 3D printer one printing shaping from PEEK materials.
3. personalized class trabecular bone structure knee-joint prosthesis as claimed in claim 1, it is characterised in that：The bone trabecula grid
Structural parameters are：Porosity 60%-90%, 1200 μm ± 200 μm of aperture.
4. personalized class trabecular bone structure knee-joint prosthesis as claimed in claim 1, it is characterised in that：Also include sensing dress
Put, governor motion and control device, the induction installation are arranged on shin bone pad, the governor motion is arranged on tibia support,
The induction installation is used to obtain the pressure signal between condyle of femur and shin bone pad, and the pressure signal is input to control device,
The induction installation and governor motion are connected with control device, and the control device is used to receive pressure signal and carries out processing life
Into pulse signal, the pulse signal is input to governor motion, and the governor motion is used to adjust condyle of femur and shin bone pad position.
5. personalized class trabecular bone structure knee-joint prosthesis as claimed in claim 1, it is characterised in that：The tibia support and shin
Pad is arranged between bone pad, spacing monitoring device is set on the pad, the spacing monitoring device is used to sense the shin
Distance signal between bone support and shin bone pad；The induction mechanism includes stationary contact, movable contact, spring part and triggers circuit；
Described spring part one end is arranged on shin bone pad, and the spring part other end sets stationary contact；The movable contact is arranged at
On tibia support, the triggers circuit is connected with stationary contact and movable contact so as to form closed-loop path structure respectively.
6. personalized class trabecular bone structure knee-joint prosthesis as claimed in claim 5, it is characterised in that：The triggers circuit bag
Include power supply, signal projector；Described power supply one end is connected with signal projector one end；The signal projector other end and stationary contact
Point connection；The power supply other end is connected with movable contact.
7. personalized class trabecular bone structure knee-joint prosthesis preparation method, it is characterised in that：Comprise the following steps：
S01, obtain medical image data：Knee joint CT examination is carried out to patient, obtains operative region whole skeleton data, is preserved
The form that can recognize that for medical image；
S02, obtain knee joint Medical Imaging parameter：The knee for establishing operative region is led according to whole skeleton models of operative region
Joint threedimensional model, the iconography parameter of operative region is measured, with condyle of femur before and after acquisition and the relative dimensions of shin bone part, and
Achieve；
S03, the foundation of knee-joint prosthesis threedimensional model：Each model knee-joint prosthesis to be selected is established, according to knee joint iconography
Parameter realizes the foundation of the threedimensional model of each model prosthese；
S04, choose the prosthese model of operation：The knee-joint prosthesis of each model to be selected is directed respectively into three-dimensional modeling software
In, contrasted with knee joint skeleton model, implement analogue simulation operation, assess simulation postoperative effect, used so as to choose operation
Knee-joint prosthesis model；
S05, personalized 3D printing personalization class trabecular bone structure knee-joint prosthesis finished product make：By the knee-joint prosthesis three of selection
Dimension module is imported in 3D printing software, and using PEEK powder as raw material, finished product is printed as with FDM technology 3D printer.
8. personalized class trabecular bone structure knee-joint prosthesis preparation method as claimed in claim 7, it is characterised in that：The step
Knee joint threedimensional model in rapid S02 is through the following steps that to establish：
Each model knee-joint prosthesis to be selected is established using 3D sculpting software UG11.0, it is preliminary to influence parameter according to knee joint
The prosthese of one or more kinds of models is selected, further according to shin bone Pulp chamber, size, position relationship, each knee is established respectively and closes
The initial configuration model of prosthese is saved, then knee-joint prosthesis is matched with pulp cavity model in Mimics18.0, utilizes cloth
That computing is so as to reach the matching of knee joint tibial part and shin bone pulp cavity, so as to realize the threedimensional model of each model prosthese
Establish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN109157310A (en) * | 2018-10-29 | 2019-01-08 | 北京大学第三医院 | A kind of knee-joint prosthesis surface pressure measurement system and method |
| CN109620481A (en) * | 2019-02-02 | 2019-04-16 | 优适医疗科技（苏州）有限公司 | Knee joint femoral condyles part and the full condyle articular system for applying it |
| CN110833470A (en) * | 2019-12-24 | 2020-02-25 | 安徽中健三维科技有限公司 | Individualized imitative bone trabecula structure metal gasket based on 3D printing technique |
| CN114758569A (en) * | 2022-04-15 | 2022-07-15 | 武汉肤尔医用科技有限公司 | Knee joint model capable of demonstrating pressure change in knee joint cavity in KOAPT movement |
| CN114758569B (en) * | 2022-04-15 | 2024-04-30 | 武汉肤尔医用科技有限公司 | Knee joint model capable of demonstrating pressure change in knee joint cavity in KOAPT movement |
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| CN110833470B (en) * | 2019-12-24 | 2021-08-24 | 安徽中健三维科技有限公司 | Individualized imitative bone trabecula structure metal gasket based on 3D printing technique |
| CN114758569A (en) * | 2022-04-15 | 2022-07-15 | 武汉肤尔医用科技有限公司 | Knee joint model capable of demonstrating pressure change in knee joint cavity in KOAPT movement |
| CN114758569B (en) * | 2022-04-15 | 2024-04-30 | 武汉肤尔医用科技有限公司 | Knee joint model capable of demonstrating pressure change in knee joint cavity in KOAPT movement |
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