CN107440821A - A kind of artificial hip joint - Google Patents
A kind of artificial hip joint Download PDFInfo
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- CN107440821A CN107440821A CN201710787178.9A CN201710787178A CN107440821A CN 107440821 A CN107440821 A CN 107440821A CN 201710787178 A CN201710787178 A CN 201710787178A CN 107440821 A CN107440821 A CN 107440821A
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- China
- Prior art keywords
- flexible connector
- artificial hip
- femoral stem
- hip prosthesis
- femur bulb
- Prior art date
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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
- A61F2/32—Joints for the hip
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30426—Bayonet coupling
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30451—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements soldered or brazed or welded
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
-
- 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
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
- A61F2002/3615—Heads or epiphyseal parts of femur having a concave shape, e.g. hemispherical cups
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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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/365—Connections of heads to necks
-
- 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
- A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00574—Coating or prosthesis-covering structure made of carbon, e.g. of pyrocarbon
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
The present invention solves the technical problem of provide a kind of flexible adjustment,All directions activity need can be met,The high artificial hip prosthesis of associated contact face wearability,And improve its implanting instrument,The reduction operation wound artificial hip prosthesis include a femoral stem,Femur bulb and Flexible Connector,The distal end of femoral stem is pluggable in femoral bone cavitas medullaris,The near-end of femoral stem extends to side top,Angle is 110 °~140 ° between elongated end axis and femoral stem axis under nature,The end of elongated end attenuates stepped suddenly,Thin segment extends 6~10mm to side top,For fixing Flexible Connector,Flexible Connector one end inserts thin segment and against at the step,The Flexible Connector other end is connected with femur bulb,Femur bulb has long 6~10mm columnar protrusions with Flexible Connector junction,It is achieved in any adjustment of each angle of artificial hip prosthesis,Especially top rake and collodiaphyseal angle are adjusted respectively in sagittal plain and Coronal.
Description
Technical field
The present invention relates to articular prosthesis field, particularly a kind of artificial hip prosthesis.
Background technology
In recent years, with the application and popularization of Replacement of Hip Joint, Osteoarthritis, rheumatoid arthritis, stock
The diseases such as bone aseptic necrosis, traumatic arthritis, congenital velopharyngeal insufficiency hypernasality are progressively effectively treated and improved, people
Work hip replacement surgery has turned into treatment hip joint disease curative effect the best way.Artificial hip joint used in the operation is false
Body includes the fastness and stability of femoral prosthesis and acetabular cup prosthesis, wherein acetabular cup prosthesis, and femoral prosthesis and acetabular bone
The adaptability of cup and human body natural's skeletal structure, it is to influence the more crucial factor of artificial hip prosthesis' life-span and safety.And
Use at present it is more designed for integral type or hinged design, but its modulability is still limited, can not meet human body natural's bone
The flexibility of bone and a variety of physiological requirements of human body, so as to photo-therapy effect.
Because human hip function is complicated, the particularly mobility with multiple directions, and bear certain drawing,
The load such as pressure, folding, in the wrong, so the selection to material property requires very high.For example：Hip joint is by ball and socket joint and fossa glenoid group
Into for connecting the fossa glenoid of femoral head and pelvis.The metallic rod of generally connection femur is cochrome or titanium alloy material system
Into the sphere for inserting the femur top of hip joint nest is then made up of cochrome or refined alumina ceramic material, and hip closes
It is usually that ultra-high molecular weight polyethylene hemisphere is formed in itself to save nest, can be implanted directly into pelvis.Clinical research shows, based on superelevation point
Effective length of service of the joint prosthesis implantation human body of the materials such as sub- weight northylen is 10~15 years.It can be seen that super high molecular weight is gathered
The materials such as ethene have service life, and the danger of failure is equally faced after implantation human body, during long-term use, is subject
Done relatively reciprocating motion compared with big load and with hard materials such as alloy, ceramics, easily because abrasion causes problems；Abrasion produces
Abrasive dust build up and induce soft tissue and produce a series of bad biologicallies, the artificial hip joint for making to be fixed well loosens,
The service life of artificial hip prosthesis is substantially reduced, so that patient has to carry out revision procedure halfway mostly.
In addition, with the development of Micro trauma surgery, the operation of Micro trauma artificial hip joint replacing is also increasingly taken seriously, its
Need to complete in the relatively small otch (5~10cm) displacement to articular prosthesis, it is necessary to doctor's rich experience and
The improvement of operating theater instruments is to obtain good surgical effect.Therefore higher requirement is proposed to instrument, it is desirable to can be achieved enough
Surgical field of view, reduce operating time, accurately position.
Therefore, the flexible modulation of artificial hip prosthesis is improved, it is met the needs of all directions activity, and strengthen phase
The wearability of contact surface is closed, while improves implanting instrument, reduces operation wound, makes implantation safer, these problems are for medical matters
It is urgently to be resolved hurrily for personnel and patient.
The content of the invention
The present invention solves the technical problem of provide a kind of flexible adjustment, can meet all directions activity need, correlation
The high artificial hip prosthesis of contact surface wearability, and improve its implanting instrument, reduce operation wound, make implantation safer.Should
Artificial hip prosthesis include a femoral stem, femur bulb and Flexible Connector, and the distal end of femoral stem is pluggable in femoral bone cavitas medullaris
It is interior, the near-end of femoral stem to extending above side, under nature between elongated end axis and femoral stem axis angle be 110 °~
140 °, the end of elongated end attenuates stepped suddenly, and thin segment is to 6~10mm of extension above side, for fixing Flexible Connector,
Flexible Connector one end inserts thin segment and against at the step, and the Flexible Connector other end is connected with femur bulb, femoral ball
Head has long 6~10mm columnar protrusions with Flexible Connector junction, and Flexible Connector and femur are realized by columnar protrusions
Bulb is fixedly connected.Any adjustment of each angle of artificial hip prosthesis is achieved in, especially in sagittal plain and Coronal
Top rake and collodiaphyseal angle are adjusted respectively.
Femur bulb also includes the orbicule and acetabular cup to cooperate, and orbicule includes metallic matrix, outside metallic matrix
Face is provided with new model carbon coating, and the coating has the intensity and hardness of graphene, but more more resistant than graphene, and its microstructure is
Lamellar mono-crystalline structures, spacing of lattice 0.21nm is sp3 orbital hybridization carbon key connections between the carbon atom of same lamella, layer
It is sp2 hydridization carbon key connections between carbon atom between layer, its C content is 99~100%.Acetabular cup includes polyvinyl
Body, the one side of base polyethylene and spherical mates are provided with and orbicule metallic matrix identical coating；Coating layer thickness is equal
Less than 10 microns, due to the special construction of the coating, its changing firmness requirements is not only met, is also caused between orbicule and acetabular cup
With higher wearability.
The femoral stem has the physiological bending degree needed for insertion femoral bone cavitas medullaris, and it proximally and distally has different cut
Face, near-end is by be ellipsoidal structure closely to the rounded gradually transition in remote section, distally pyramidal structure in the form of sheets, so as to effective
Anti-rotation, and be easily inserted in femoral bone cavitas medullaris.
The Flexible Connector is spring, and the elastic metallic yarn for forming spring arranges closely, and it, which passes through to be interference fitted, distinguishes
It is fixedly connected with the femoral stem and femur bulb at both ends.
The Flexible Connector is tubular elastic metallic, and it is by being interference fitted the femoral stem and femoral ball with both ends respectively
Head is fixedly connected.
The Flexible Connector has the weight capacity needed for artificial hip prosthesis, and it is curved to carry out any direction
Song, its angle of bend can deviate axial 20-40 degree.
The thin segment of the femoral stem elongated end and femoral stem be integrally formed by same material, the femur bulb with thereon
Columnar protrusions are also that same material is integrally formed, so that overall structure is simpler, durable, fabrication and installation are more convenient,
It is more stable after implantation.
The present invention also provides the displacement apparatus that foregoing artificial hip prosthesis are implanted into human body, displacement apparatus tool
There are control stick, guide extension bar, acetabular cup connector, sleeve and acetabular cup to tap bar, the near-end of control stick, which has, to be fixedly connected
Handle, be distally connected with acetabular cup connector, a guide extension bar, the other end of guide extension bar be fixedly connected with below handle
Be provided with sleeve hole, sleeve is nested in sleeve hole, sleeve be used for insert acetabular cup tap bar, guide extension bar it is flexible and
Supportive, all directions bending, stretching and shortening can be carried out, so that the distance of regulating sleeve as needed and acetabular cup connector,
And it is directed at both in favor of installation, the distance and angle of guide extension bar need to be adjusted during installation in advance, acetabular cup is positioned
Bar is tapped using acetabular cup afterwards and strike real fixation rapidly, then remove acetabular cup and tap bar and displacement apparatus.
The guide extension bar is that elastic metallic material or PVC material are made, and the body of rod is hollow tubular structures, in pleat
Corrugation laminated form is flexible to be beneficial under external force, and consistency is not stretched in its natural state, and metal or PVC is presented
Inherent strength, so as to bear the weight and pressure that acetabular cup taps bar.
The acetabular cup taps bar and passes through sleeve, and one end is connected with acetabular cup connector, and the other end has convenient percussion
Shank, acetabular cup tap bar and are made for hard metal material, are hollow tubular structure, thickness of pipe wall 0.5-2mm, the gold
It can be aluminium alloy, titanium alloy, stainless steel etc. to belong to material, need to meet the features such as slim and graceful, durable.
The far end activity clamping of the acetabular cup connector and control stick, and external force adjustment phase can be borrowed in proper range
To angle, angle adjustment well rear automatic locking, can be adjusted again under external force.
Beneficial effects of the present invention：
Due to employing Flexible Connector between femoral stem and femur bulb, and on orbicule and acetabular cup contact surface
High-wearing feature carbon coating is employed, so that artificial hip prosthesis' flexible adjustment, all directions activity need, and phase can be met
It is high to close contact surface wearability, more meets the psychological need of hip region, and can avoid because overhaul halfway and caused by it is secondary
Operation risk；Meanwhile additionally provide a kind of artificial hip prosthesis' displacement apparatus with control stick and guide extension bar, its energy
Enough reduce operation wound, make implantation safer.
Brief description of the drawings
Fig. 1 is a kind of structural representation of artificial hip prosthesis of the present invention；
Fig. 2 is the structural representation of femur bulb in a kind of artificial hip prosthesis of the present invention；
Fig. 3 is a kind of structural representation of artificial hip prosthesis' displacement apparatus of the present invention, and there is high resiliency guiding to stretch for it
Contracting bar；
The mark of each part is as follows in accompanying drawing：1st, femoral stem；2nd, femur bulb；3rd, Flexible Connector；4th, femoral stem distal end；
5th, femur handle proximal end；6th, columnar protrusions；7th, orbicule；8th, acetabular cup；9th, metallic matrix；10th, coating；11st, base polyethylene；
12nd, control stick；13rd, guide extension bar；14th, acetabular cup connector；15th, sleeve；16th, acetabular cup taps bar；17th, handle；18th, handle
Portion.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Embodiment 1：
As shown in figure 1, artificial hip prosthesis include a femoral stem 1, femur bulb 2 and Flexible Connector 3, femoral stem 1
Distal end 4 it is pluggable in femoral bone cavitas medullaris, the near-end 5 of femoral stem is to extending above side, elongated end axis and stock under nature
Angle is 110 °~140 ° between bone arbor line, and the end of elongated end attenuates stepped suddenly, thin segment to extension 6 above side~
10mm, for fixing Flexible Connector 3, the one end of Flexible Connector 3 insertion thin segment and against at the step, Flexible Connector 3
The other end is connected with femur bulb 2, and femur bulb has long 6~10mm columnar protrusions 6 with the junction of Flexible Connector 3, leads to
Cross columnar protrusions 6 and realize being fixedly connected for Flexible Connector and femur bulb.It is achieved in each angle of artificial hip prosthesis
Any adjustment, is especially adjusted to top rake and collodiaphyseal angle respectively in sagittal plain and Coronal.
Femur bulb 2 also includes the orbicule 7 and acetabular cup 8 to cooperate, as shown in Fig. 2 orbicule 7 includes Metal Substrate
Body 9, the outside of metallic matrix 9 are provided with new model carbon coating 10, and the coating 10 has the intensity and hardness of graphene, but compares graphene
More resistant, its microstructure is lamellar mono-crystalline structures, spacing of lattice 0.21nm, is sp3 between the carbon atom of same lamella
Orbital hybridization carbon key connection, is sp2 hydridization carbon key connections between carbon atom between layers, and its C content is 99~100%.
Acetabular cup 8 includes base polyethylene 11, and the one side of base polyethylene and spherical mates is provided with and orbicule metallic matrix
Identical coating 10；The thickness of coating 10 is respectively less than 10 microns, and due to the special construction of the coating, not only meeting its hardness needs
Ask, also make it that there is higher wearability between orbicule 7 and acetabular cup 8.
The femoral stem 1 has the physiological bending degree needed for insertion femoral bone cavitas medullaris, and its near-end 5 and distal end 4 have different
Section, near-end 5 is by be ellipsoidal structure closely to the rounded gradually transition in remote section, distally 4 pyramidal structures in the form of sheets, so as to
Effective anti-rotation, and be easily inserted in femoral bone cavitas medullaris.
The Flexible Connector 3 is spring, and the elastic metallic yarn for forming spring arranges closely, and it, which passes through to be interference fitted, distinguishes
It is fixedly connected with the femoral stem 1 and femur bulb 2 at both ends.
The Flexible Connector 3 has the weight capacity needed for artificial hip prosthesis, and it is curved to carry out any direction
Song, its angle of bend can deviate axial 20-40 degree.
The thin segment and femoral stem of the elongated end of femoral stem 1 are integrally formed by same material, the femur bulb 2 with thereon
Columnar protrusions 6 and same material it is integrally formed so that overall structure is simpler, durable, fabrication and installation are more square
Just, it is more stable after implantation.
Embodiment 2：
As shown in figure 1, artificial hip prosthesis' major part structure of the present invention is same as Example 1, unlike, this reality
It is tubular elastic metallic to apply Flexible Connector 3 described in example, and its hollow structure can save material and can and ensure enough elasticity
Need, and be fixedly connected respectively with the femoral stem 1 and femur bulb 2 at both ends by interference fit.In addition, the Flexible Connector 3
Also can possess locking mechanism, 2-3 inside projections are being set close to end, and it is relative in femoral stem 1 and femur bulb 2
The link position answered sets 2-3 inside grooves, to be locked with the protrusions match on Flexible Connector 3.Flexible Connector 3
It can also be fixedly connected by connected modes such as clamping, welding.
Embodiment 3：
The present invention also provides the displacement apparatus that foregoing artificial hip prosthesis are implanted into human body, as shown in figure 3, should
There is displacement apparatus control stick 12, guide extension bar 13, acetabular cup connector 14, sleeve 15 and acetabular cup to tap bar 16, manipulate
The near-end of bar 12 has the handle 17 being fixedly connected, and is distally connected with acetabular cup connector 14, and being fixedly connected with one below handle leads
To expansion link 13, the other end of guide extension bar is provided with sleeve 15, and sleeve is used for inserting acetabular cup percussion bar 16, guide extension
Bar 13 has certain elasticity and supportive, can carry out all directions bending, stretching and shortening, so as to regulating sleeve 15 as needed with
Distance between acetabular cup connector 14, and it is directed at both in favor of installation, guide extension bar 13 need to be adjusted in advance during installation
Distance and angle, after acetabular cup is positioned using acetabular cup tap bar 16 strike real fixation rapidly, then remove acetabular cup tap
Bar 16 and whole displacement apparatus.
The guide extension bar 13 is that elastic metallic material or PVC material are made, and the body of rod is hollow tubular structures, is in
Accordion laminated form is flexible to be beneficial under external force, and consistency is not stretched in its natural state, and metal or PVC is presented
Inherent strength, so as to bear acetabular cup tap bar 16 weight and pressure.
The acetabular cup taps bar 16 and passes through sleeve 15, and one end is connected with acetabular cup connector 14, and the other end has convenient
The shank 18 of percussion, acetabular cup tap bar 16 and are made for hard metal material, are hollow tubular structure, thickness of pipe wall 0.5-
2mm, the metal material can be aluminium alloy, titanium alloy, stainless steel etc., need to meet the features such as slim and graceful, durable.
The far end activity clamping of the acetabular cup connector 14 and control stick 12, and external force tune can be borrowed in proper range
Whole relative angle, angle adjustment well rear automatic locking, can be adjusted again under external force.
The present invention between femoral stem and femur bulb due to employing Flexible Connector 3, and in orbicule 7 and acetabular cup
High-wearing feature carbon coating 10 is employed on 8 contact surfaces so that artificial hip prosthesis' flexible adjustment, can meet all directions live
Dynamic demand, and associated contact face wearability is high, more meets the psychological need of hip region, and can avoid because overhauling halfway and
Caused by second operation risk, use is safer；Meanwhile additionally provide a kind of people with control stick 12 and guide extension bar 13
Work hip prosthesis displacement apparatus, it can reduce operation wound, make implantation safer.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent transformation that bright description is made, or other related technical areas are directly or indirectly used in,
Similarly it is included within the scope of the present invention.
Claims (7)
1. a kind of artificial hip prosthesis, including femoral stem, femur bulb and Flexible Connector, the distal end of femoral stem it is pluggable
In femoral bone cavitas medullaris, the near-end of femoral stem extends to side top, and angle is between elongated end axis and femoral stem axis under nature
110 °~140 °, the end of elongated end attenuates stepped suddenly, and thin segment is to 6~10mm of extension above side, for fixed elasticity
Connector, Flexible Connector one end insertion thin segment and against at the step, the Flexible Connector other end is connected with femur bulb,
Femur bulb has long 6~10mm columnar protrusions with Flexible Connector junction, and Flexible Connector is realized by columnar protrusions
With being fixedly connected for femur bulb.
2. artificial hip prosthesis according to claim 1, the femur bulb also include the orbicule to cooperate and
Acetabular cup, orbicule include metallic matrix, are provided with new model carbon coating outside the metallic matrix, the coating has graphene
Intensity and hardness, but more more resistant than graphene, its microstructure are lamellar mono-crystalline structures, spacing of lattice 0.21nm, same
It is sp3 orbital hybridization carbon key connections between the carbon atom of lamella, connects between carbon atom between layers for sp2 hydridization carbon key
Connect, its C content is 99~100%；Acetabular cup includes base polyethylene, and base polyethylene in the one side of spherical mates with setting
Have and be respectively less than 10 microns with orbicule metallic matrix identical coating, the coating layer thickness.
3. artificial hip prosthesis according to claim 1 or 2, the femoral stem has the life needed for insertion femoral bone cavitas medullaris
Flexibility is managed, it proximally and distally has different sections, and near-end to the rounded gradually transition in remote section for ellipse by closely tying
Structure, distal end pyramidal structure in the form of sheets, so as to effective anti-rotation, and is easily inserted in femoral bone cavitas medullaris.
4. according to the artificial hip prosthesis described in any one of claims 1 to 3, the Flexible Connector is spring, forms bullet
The elastic metallic yarn arrangement of spring is close, and it is fixedly connected with the femoral stem and femur bulb at both ends respectively by interference fit.
5. according to the artificial hip prosthesis described in any one of claims 1 to 3, the Flexible Connector is tubular elasticity gold
Category, it is fixedly connected with the femoral stem and femur bulb at both ends respectively by interference fit.
6. the artificial hip prosthesis according to claim 4 or 5, the Flexible Connector has artificial hip prosthesis institute
The weight capacity needed, and any direction bending can be carried out, its angle of bend can deviate axial 20-40 degree.
7. according to the artificial hip prosthesis described in any one of claim 1 to 6, the thin segment and femur of the femoral stem elongated end
Handle is integrally formed by same material, and the femur bulb is also integrally formed by same material with columnar protrusions thereon.
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| CN201710787178.9A CN107440821B (en) | 2017-09-04 | 2017-09-04 | A kind of artificial hip joint |
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| CN201710787178.9A CN107440821B (en) | 2017-09-04 | 2017-09-04 | A kind of artificial hip joint |
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| CN107440821B CN107440821B (en) | 2019-06-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108836577A (en) * | 2018-07-24 | 2018-11-20 | 北京安颂科技有限公司 | Acetabular component and artificial hip joint |
| CN112741715A (en) * | 2021-01-18 | 2021-05-04 | 吉林大学 | Metal 3D prints customized sleeve matched stack formula femoral intramedullary needle prosthesis |
| CN112998914A (en) * | 2021-02-22 | 2021-06-22 | 佳木斯大学 | Artificial hip joint |
| CN113081401A (en) * | 2019-12-23 | 2021-07-09 | 澳特拉斯(北京)科技有限公司 | Flexible hip joint handle and flexible hip joint prosthesis adopting same |
| CN113397766A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis with high long-term stability |
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| CN113397766A (en) * | 2021-06-17 | 2021-09-17 | 嘉思特华剑医疗器材(天津)有限公司 | Bionic surface hip joint prosthesis with high long-term stability |
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|---|---|
| CN107440821B (en) | 2019-06-25 |
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Inventor after: Zhang Yan Inventor after: Chang Liang Inventor after: Lv Guangchao Inventor after: Ding Pu Inventor after: Liu Kuanhao Inventor after: Fan Yanfeng Inventor after: Ding Yu Inventor before: Ding Pu Inventor before: Liu Kuanhao Inventor before: Fan Yanfeng Inventor before: Ding Yu |
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Effective date of registration: 20190530 Address after: 130000 No. 1 Xinmin Street, Changchun City, Jilin Province Applicant after: The First Hospital of Jinlin University Address before: 450063 No. 123 Lianyun Road, Erqi District, Zhengzhou City, Henan Province Applicant before: Huanghe S & T College |
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