CN107440821B - A kind of artificial hip joint - Google Patents

A kind of artificial hip joint Download PDF

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Publication number
CN107440821B
CN107440821B CN201710787178.9A CN201710787178A CN107440821B CN 107440821 B CN107440821 B CN 107440821B CN 201710787178 A CN201710787178 A CN 201710787178A CN 107440821 B CN107440821 B CN 107440821B
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China
Prior art keywords
flexible connector
femoral stem
artificial hip
hip prosthesis
femoral
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CN201710787178.9A
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Chinese (zh)
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CN107440821A (en
Inventor
张岩
常亮
吕广超
丁普
刘宽浩
范炎峰
丁玉
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First Hospital Jinlin University
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First Hospital Jinlin University
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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
    • 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

Abstract

The invention mainly solves the technical problem of providing a kind of flexible adjustments, it is able to satisfy all directions activity need, the high artificial hip prosthesis of associated contact face wearability, and improve its implanting instrument, reducing the operation wound artificial hip prosthesis includes a femoral stem, femur bulb and flexible connector, the distal end of femoral stem is pluggable in femoral bone cavitas medullaris, the proximal end of femoral stem extends to upper side, angle is 110 °~140 ° between elongated end axis and femoral stem axis under natural conditions, the end of elongated end attenuates stepped suddenly, thin segment extends 6~10mm to upper side, for fixing flexible connector, flexible connector one end is inserted into thin segment and at the step, the flexible connector other end is connected with femur bulb, femur bulb and flexible connector junction have the columnar protrusions of long 6~10mm, by This realizes any adjustment of each angle of artificial hip prosthesis, is especially adjusted respectively to top rake and collodiaphyseal angle in sagittal plain and Coronal.

Description

A kind of artificial hip joint
Technical field
The present invention relates to articular prosthesis field, especially a kind of artificial hip prosthesis.
Background technique
In recent years, with the application of Replacement of Hip Joint and universal, Osteoarthritis, rheumatoid arthritis, stock The diseases such as bone aseptic necrosis, traumatic arthritis, congenital velopharyngeal insufficiency hypernasality are gradually effectively treated and improve, people Work hip replacement surgery has become treatment hip joint disease curative effect the best way.Artificial hip joint used in the operation is false Body includes femoral prosthesis and acetabular cup prosthesis, the wherein fastness and stability of acetabular cup prosthesis and femoral prosthesis and acetabular bone The adaptability of cup and human body natural's skeletal structure is to influence the more crucial factor of artificial hip prosthesis' service life and safety.And Use at present it is more designed for integral type or hinged design, but its modulability is still limited, is unable to satisfy human body natural's bone The flexibility of bone and a variety of physiological requirements of human body, thus photo-therapy effect.
Since human hip function is complicated, especially with the mobility of multiple directions, and bear certain drawing, The loads such as pressure, folding, in the wrong, so requiring the selection of material property very high.For example: hip joint is by ball and socket joint and glenoid group At for connecting the glenoid of femoral head and pelvis.The metallic rod of usually connection femur is cochrome or titanium alloy material system At the sphere for being inserted into the femur top of hip joint nest is then made of cochrome or purification alumina ceramic material, and hip closes Saving nest itself is usually that ultra-high molecular weight polyethylene hemisphere is constituted, and 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.As it can be seen that super high molecular weight is poly- The materials such as ethylene have service life, and the danger that failure is equally faced after implantation human body subjects in the long-term use process It does relatively reciprocating motion compared with big load and with hard materials such as alloy, ceramics, is easy to cause problems because of abrasion；Abrasion generates Abrasive dust build up and induce soft tissue and generate a series of undesirable biologicallies, loosen the artificial hip joint being fixed well, The service life of artificial hip prosthesis is substantially reduced, so that patient has to carry out revision procedure halfway mostly.
In addition, the operation of Micro trauma artificial hip joint replacing is also increasingly taken seriously with the development of Micro trauma surgery, Need to complete the displacement to articular prosthesis in the relatively small notch (5~10cm), need doctor's experience abundant and The improvement of surgical instrument is to obtain good surgical effect.Therefore to tool, more stringent requirements are proposed, it is desirable that can be achieved enough Surgical field of view, reduce operating time, accurately position.
Therefore, the flexible modulation for improving artificial hip prosthesis makes it meet the movable demand of all directions, and reinforced phase The wearability for closing contact surface, while improving implanting instrument, reduces operation wound, makes to be implanted into safer, and these problems are for medical matters It is urgently to be resolved for personnel and patient.
Summary of the invention
The invention mainly solves the technical problem of providing a kind of flexible adjustment, it is able to satisfy all directions activity need, correlation The high artificial hip prosthesis of contact surface wearability, and improve its implanting instrument, reduce operation wound, makes to be implanted into safer.It 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 Interior, the proximal end of femoral stem extends to upper side, under natural conditions between elongated end axis and femoral stem axis angle be 110 °~ 140 °, the end of elongated end attenuates stepped suddenly, and thin segment extends 6~10mm to upper side, for fixing flexible connector, Flexible connector one end is inserted into thin segment and at the step, and the flexible connector other end is connected with femur bulb, femoral ball Head has the columnar protrusions of long 6~10mm with flexible connector junction, realizes flexible connector and femur by columnar protrusions Bulb is fixedly connected.It is achieved in any adjustment of each angle of artificial hip prosthesis, especially in sagittal plain and Coronal Top rake and collodiaphyseal angle are adjusted respectively.
Femur bulb further includes mutually matched orbicule and acetabular cup, and orbicule includes metallic matrix, outside metallic matrix Face is equipped with new model carbon coating, which has the intensity and hardness of graphene, but more more wear resistant than graphene, and microstructure is Lamellar mono-crystalline structures, spacing of lattice 0.21nm are keyed between the carbon atom of same lamella, layer for sp3 orbital hybridization carbon It is keyed between carbon atom between layer for sp2 hydridization carbon, C content is 99~100%.Acetabular cup includes polyvinyl Body, base polyethylene are equipped with coating identical with orbicule metallic matrix with the one side of spherical mates；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, but also between orbicule and acetabular cup Wearability with higher.
Physiological bending degree needed for the femoral stem has insertion femoral bone cavitas medullaris proximally and distally has different cut Face, proximal end is by the rounded gradually transition in remote section being closely ellipsoidal structure, distal end 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 arrangement for forming spring is close, passes through interference fit difference It is fixedly connected with the femoral stem at both ends and femur bulb.
The flexible connector is tubular elastic metallic, by being interference fitted the femoral stem and femoral ball with both ends respectively Head is fixedly connected.
Load-bearing capacity needed for the flexible connector has artificial hip prosthesis, and it is curved to be able to carry out any direction Song, bending angle can deviate axial 20-40 degree.
The thin segment and femoral stem of the femoral stem elongated end 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 tools There are control stick, guide extension bar, acetabular cup connector, sleeve and acetabular cup to tap bar, the proximal end of control stick, which has, to be fixedly connected Handle, be distally connected with acetabular cup connector, be fixedly connected with a guide extension bar, the other end of guide extension bar below handle Be provided with sleeve hole, sleeve is nested in sleeve hole, sleeve be used to be inserted into acetabular cup tap bar, guide extension bar have elasticity and Supportive can carry out all directions bending, stretching and shortening, so that sleeve is adjusted as needed at a distance from acetabular cup connector, And both making alignment in favor of installation, when installation, need to adjust the distance and angle of guide extension bar in advance, and acetabular cup is positioned Bar is tapped using acetabular cup afterwards and strikes real fixation rapidly, is then removed acetabular cup and is tapped 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, is in pleat Corrugation laminated form is flexible to be conducive under external force, and invariance 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, which has, facilitates 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 Belonging to material can be aluminium alloy, titanium alloy, stainless steel etc., need to meet the features such as slim and graceful, durable.
The clamping of the far end activity of the acetabular cup connector and control stick, and external force adjustment phase can be borrowed in the appropriate range To angle, angle automatic locking after adjusting can be adjusted again under external force.
Beneficial effects of the present invention:
Due to using flexible connector between femoral stem and femur bulb, and on orbicule and acetabular cup contact surface Using high-wearing feature carbon coating, so that artificial hip prosthesis' flexible adjustment, being able to satisfy all directions activity need, and phase It is high to close contact surface wearability, more meets the psychological need of hip region, and is secondary caused by can be avoided due to overhaul halfway Operation risk；Meanwhile additionally providing a kind of artificial hip prosthesis' displacement apparatus with control stick and guide extension bar, energy Enough reduce operation wound, makes to be implanted into safer.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of artificial hip prosthesis of the present invention；
Fig. 2 is the structural schematic diagram of femur bulb in a kind of artificial hip prosthesis of the present invention；
Fig. 3 is a kind of structural schematic diagram of artificial hip prosthesis' displacement apparatus of the present invention, is stretched with high resiliency guiding Contracting bar；
The components in the drawings are labeled as follows: 1, femoral stem；2, femur bulb；3, flexible connector；4, femoral stem distal end； 5, femur handle proximal end；6, columnar protrusions；7, orbicule；8, acetabular cup；9, metallic matrix；10, coating；11, base polyethylene； 12, control stick；13, guide extension bar；14, acetabular cup connector；15, sleeve；16, acetabular cup taps bar；17, handle；18, handle Portion.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the 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 proximal end 5 of femoral stem extends to upper side, under natural conditions elongated end axis and stock Angle is 110 °~140 ° between bone arbor line, and the end of elongated end attenuates stepped suddenly, thin segment extends 6 to upper side~ 10mm, for fixing flexible connector 3,3 one end of flexible connector is inserted into thin segment and at the step, flexible connector 3 The other end is connected with femur bulb 2, and the columnar protrusions 6 of femur bulb and 3 junction of flexible connector with long 6~10mm lead to It crosses columnar protrusions 6 and realizes being fixedly connected for flexible connector and femur bulb.It is achieved in each angle of artificial hip prosthesis Any adjustment, is especially respectively adjusted top rake and collodiaphyseal angle in sagittal plain and Coronal.
Femur bulb 2 further includes mutually matched orbicule 7 and acetabular cup 8, as shown in Fig. 2, orbicule 7 includes Metal Substrate Body 9 is equipped with new model carbon coating 10 outside metallic matrix 9, which has the intensity and hardness of graphene, but compares graphene More wear resistant, microstructure is lamellar mono-crystalline structures, and spacing of lattice 0.21nm is sp3 between the carbon atom of same lamella Orbital hybridization carbon is keyed, and is keyed between carbon atom between layers for sp2 hydridization carbon, and C content is 99~100%. Acetabular cup 8 includes base polyethylene 11, and the one side of base polyethylene and spherical mates is equipped with and orbicule metallic matrix Identical coating 10；10 thickness of coating is respectively less than 10 microns, and due to the special construction of the coating, not only meeting its hardness is needed It asks, but also wearability with higher between orbicule 7 and acetabular cup 8.
Physiological bending degree needed for the femoral stem 1 has insertion femoral bone cavitas medullaris, proximal end 5 and distal end 4 have different Section, proximal end 5 is by the rounded gradually transition in remote section being closely ellipsoidal structure, 4 pyramidal structure in the form of sheets of distal end, 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 arrangement for forming spring is close, passes through interference fit difference It is fixedly connected with the femoral stem 1 at both ends and femur bulb 2.
Load-bearing capacity needed for the flexible connector 3 has artificial hip prosthesis, and it is curved to be able to carry out any direction Song, bending angle can deviate axial 20-40 degree.
The thin segment and femoral stem of 1 elongated end of femoral stem are integrally formed by same material, the femur bulb 2 with thereon Columnar protrusions 6 be also same material it is integrally formed so that overall structure is simpler, durable, fabrication and installation are more square Just, more stable after implantation.
Embodiment 2:
As shown in Figure 1, artificial hip prosthesis' major part structure of the invention is same as Example 1, unlike, this reality Applying flexible connector 3 described in example is tubular elastic metallic, and hollow structure can save material again and can guarantee enough elasticity It needs, and is fixedly connected respectively with the femoral stem 1 at both ends and femur bulb 2 by interference fit.In addition, the flexible connector 3 Can also have locking mechanism, 2-3 inside protrusions are being set close to end, and opposite in femoral stem 1 and femur bulb 2 2-3 inside grooves of link position setting answered, to be locked with the protrusions match on flexible connector 3.Flexible connector 3 It can also be fixedly connected by the connection types such as being clamped, 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, manipulation The proximal end of bar 12 has the handle 17 being fixedly connected, and is distally connected with acetabular cup connector 14, is fixedly connected with one below handle and leads To telescopic rod 13, the other end of guide extension bar is provided with sleeve 15, and sleeve is used to be inserted into acetabular cup and taps bar 16, guide extension Bar 13 has certain elasticity and supportive, can carry out all directions bending, stretching and shortening, thus adjust as needed sleeve 15 with Distance between acetabular cup connector 14, and both make alignment in favor of installation, when installation, need to adjust guide extension bar 13 in advance 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 entire 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 conducive under external force, and invariance 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 of the acetabular cup connector 14 and control stick 12 is clamped, and can borrow external force tune in the appropriate range Whole relative angle, angle automatic locking after adjusting, can be adjusted again under external force.
The present invention between femoral stem and femur bulb due to using flexible connector 3, and in orbicule 7 and acetabular cup High-wearing feature carbon coating 10 is used on 8 contact surfaces, so that artificial hip prosthesis' flexible adjustment, to be able to satisfy all directions living Dynamic demand, and associated contact face wearability is high, more meets the psychological need of hip region, and can be avoided due to overhaul halfway Caused by second operation risk, use is safer；Meanwhile additionally providing a kind of people with control stick 12 and guide extension bar 13 Work hip prosthesis displacement apparatus, can reduce operation wound, make to be implanted into safer.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair Equivalent structure made by bright description or equivalent transformation are applied directly or indirectly in other relevant technical fields, Similarly it is included within the scope of the present invention.

Claims (6)

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 proximal end of femoral stem extends to upper side, and angle is between elongated end axis and femoral stem axis under natural conditions 110 °~140 °, the end of elongated end attenuates stepped suddenly, and thin segment extends 6~10mm to upper side, for fixed elasticity Connector, which is characterized in that flexible connector one end is inserted into thin segment and at the step, the flexible connector other end and stock Bone bulb is connected, and the columnar protrusions of femur bulb and flexible connector junction with long 6~10mm are realized by columnar protrusions Flexible connector is fixedly connected with femur bulb；The flexible connector tubular elastic metallic, the tubular elastic metallic tool 2-3 inside protrusions are being arranged close to end in standby locking mechanism, and in femoral stem and the corresponding connection of femur bulb 2-3 inside grooves are arranged in position, to lock with the protrusions match on flexible connector.
2. artificial hip prosthesis according to claim 1, the femur bulb further include mutually matched orbicule and Acetabular cup, orbicule include metallic matrix, and new model carbon coating is equipped with outside the metallic matrix, which has graphene Intensity and hardness, but more more wear resistant than graphene, microstructure are lamellar mono-crystalline structures, spacing of lattice 0.21nm, same It is keyed between the carbon atom of lamella for sp3 orbital hybridization carbon, connects between carbon atom between layers for sp2 hydridization carbon key It connects, C content is 99~100%；Acetabular cup includes base polyethylene, is set in base polyethylene and the one side of spherical mates There is coating identical with orbicule metallic matrix, the coating layer thickness is respectively less than 10 microns.
3. artificial hip prosthesis according to claim 1 or 2, life needed for the femoral stem has insertion femoral bone cavitas medullaris Curvature is managed, proximally and distally there is different sections, proximal 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. artificial hip prosthesis according to claim 1 or 2, the flexible connector has artificial hip prosthesis institute The load-bearing capacity needed, and it is able to carry out any direction bending, bending angle can deviate axial 20-40 degree.
5. artificial hip prosthesis according to claim 1 or 2, the thin segment and femoral stem of the femoral stem elongated end are by same One material is integrally formed, and the femur bulb is also integrally formed by same material with columnar protrusions thereon.
6. artificial hip prosthesis according to claim 5, the thin segment and femoral stem of the femoral stem elongated end are by same Material is integrally formed, and the femur bulb is also integrally formed by same material with columnar protrusions thereon.
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CN113081401B (en) * 2019-12-23 2022-10-21 贵州澳特拉斯科技有限公司 Flexible hip joint handle and flexible hip joint prosthesis adopting same
CN112998914B (en) * 2021-02-22 2021-10-15 佳木斯大学 Artificial hip joint
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