CN105326584A - Artificial joint - Google Patents

Artificial joint Download PDF

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Publication number
CN105326584A
CN105326584A CN201510907096.4A CN201510907096A CN105326584A CN 105326584 A CN105326584 A CN 105326584A CN 201510907096 A CN201510907096 A CN 201510907096A CN 105326584 A CN105326584 A CN 105326584A
Authority
CN
China
Prior art keywords
artificial joint
main backbone
column
connector
crushed element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201510907096.4A
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Chinese (zh)
Inventor
马小军
蔡郑东
孙伟
沈嘉康
华莹奇
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai First Peoples Hospital
Original Assignee
Shanghai First Peoples Hospital
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shanghai First Peoples Hospital filed Critical Shanghai First Peoples Hospital
Priority to CN201510907096.4A priority Critical patent/CN105326584A/en
Publication of CN105326584A publication Critical patent/CN105326584A/en
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
    • A61F2002/3006—Properties of materials and coating materials
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/3028—Three-dimensional shapes polyhedral different from parallelepipedal and pyramidal
    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30545—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting a diameter
    • 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
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30649—Ball-and-socket joints
    • A61F2002/3065—Details of the ball-shaped head
    • A61F2002/30652—Special cut-outs, e.g. flat or grooved cut-outs
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00035—Other metals or alloys
    • A61F2310/00131—Tantalum or Ta-based alloys
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
    • A61F2310/00203—Ceramics or ceramic-like structures based on metal oxides containing alumina or aluminium oxide
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A61F2310/00185—Ceramics or ceramic-like structures based on metal oxides
    • A61F2310/00239—Ceramics or ceramic-like structures based on metal oxides containing zirconia or zirconium oxide ZrO2
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A61F2310/00293—Ceramics or ceramic-like structures containing a phosphorus-containing compound, e.g. apatite
    • 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
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00329—Glasses, e.g. bioglass
    • A61F2310/00335—Porcelain

Abstract

The invention discloses an artificial joint. The artificial joint comprises a body part and a deformation part which are fixedly connected; the body part comprises a simulation joint and a main backbone, and the simulation joint is located at the upper end of the main backbone; the main backbone is hollowed out in an up-and-down penetrating mode, and the main backbone is provided with a connector protruding outwards; the main backbone is internally provided with a one-way valve which is located below the connector; an opening of the connector is provided with an internal thread or an external thread; the deformation part is provided with a column tube which is communicated with the main backbone, the upper end of the column tube is opened, and the lower end of the column tube is closed. According to the artificial joint, the deformation part is inserted into a medullary cavity in a mode of compressing the diameter, marrow expanding is not needed, or only limited marrow expanding at the near end is needed, and surgical operation is convenient.

Description

A kind of artificial joint
Technical field
The present invention relates to armarium, specifically relate to a kind of artificial joint.
Background technology
When joint pathological changes appears in patient, such as femur head necrosis, must by installing artificial joint to repair the mobility at patient articular place.Under for femur, the mounting means of the artificial joint of prior art is described, shown in Figure 1, first greater trochanter (i.e. greater trochanter) is excised, then expand marrow in incision, then the afterbody of artificial joint is inserted in pulp cavity, finally inject bone cement and load fixing.Its shortcoming is: complicated operation, and operating time is long, and need to expand marrow and easily cause bone to ftracture, fill bone cement and make bone cement stay in human body, its composition exists potential danger to patient.
Summary of the invention
In order to solve the problem, the object of the present invention is to provide and a kind ofly prevent bone from ftractureing, without the need to bone cement, the artificial joint that easy to operate, operating time is short.
In order to achieve the above object, present invention employs following technical scheme:
A kind of artificial joint, have such feature, comprising: body part, crushed element, described body part is fixedly connected with crushed element; Described body part comprises emulation joint and main backbone, and emulation joint is positioned at main key upper end; Described main backbone is the mode hollow out run through up and down, and main key inner side is provided with connector; The opening part of described connector is provided with female thread; Also be provided with check valve in described main backbone, and described check valve is positioned at the below of connector; Described crushed element is provided with the column jecket be communicated with main backbone, described column jecket upper end open, lower end closed; The lateral surface of described column jecket is provided with outwardly lateral column, and at ambient pressure, column jecket inwardly shrinks folding with cross-wise direction, and during by high pressure, column jecket outwards launches with cross-wise direction, simultaneously drive lateral column launch, and cancel exert pressure after, still keep deployed condition.
Further, in artificial joint provided by the invention, such feature can also be had: described lateral column is symmetrical set, and lateral column exists interval each other.
Further, in artificial joint provided by the invention, such feature can also be had: described crushed element lower end has tapering, and the diameter of bottom face is minimum.
Further, in artificial joint provided by the invention, such feature can also be had: the skin of described artificial joint also scribbles aluminium oxide ceramics, zirconia ceramics, hydroxyapatite, titanium alloy, one of them coating of metal tantalum.
The good effect that the present invention has on the basis of the above is:
Artificial joint provided by the invention, crushed element inserts pulp cavity and without the need to expanding marrow with the form of compression diameter, or only needs near-end Limited Reamed, makes operation technique convenient;
The individual variation that all kinds of patient's pulp cavity exists can be met, as long as the sectional area of pulp cavity is less than the maximum secting area after crushed element expansion, lateral column and pulp cavity inwall can tight dociles, make stress equilibrium be distributed in whole backbone, the backbone's cracking that there will not be stress to concentrate to cause;
The rising that when space between lateral column contributes to reducing plug pin, marrow is intrinsic pressure, and owing to not expanding marrow, drop to minimum to the destruction of blood fortune in marrow, greatly reduce the risk of fat embolism;
In addition, the design of symmetrical lateral column also strengthens the anti-rotation performance of artificial joint, makes it fixing more stable.
Accompanying drawing explanation
Fig. 1 is the scheme of installation of the artificial joint of prior art;
Fig. 2 is structural representation of the present invention;
Its schematic cross-section when Fig. 3 is column jecket contraction;
Its schematic cross-section when Fig. 4 is column jecket expansion;
Fig. 5 is using state schematic diagram of the present invention.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reach object and effect is easy to understand, following examples are specifically addressed artificial joint provided by the invention by reference to the accompanying drawings.
As shown in Figure 2, the artificial joint that the present embodiment provides comprises body part 1, crushed element 2, and body part 1 lower end is fixedly connected crushed element 2.
Concrete, described body part 1 comprises emulation joint 11 and main key 12, the joint that emulation joint 11 is after death excised in order to replace disease to degenerate; Main key 12 is the mode hollow outs run through up and down, and main backbone is provided with connector 121, and the inner chamber of connector is provided with female thread, be conveniently connected with the compression pump of outside; Be provided with check valve 122 in the inside of main key 12 hollow outs and near the below of connector 121, with the flow direction of water during controlled pressure pump priming, and the demand of crushed element to pressure can be met;
Described crushed element 2 is provided with the column jecket 21 with the main key 12 upper end open lower end closed be communicated with, the lateral surface of described column jecket 21 is arranged with four outwardly lateral columns 22, there is gap in lateral column 22, shown in Fig. 3, Fig. 4, at ambient pressure each other, column jecket 21 inwardly shrinks folding with cross-wise direction, during by high pressure, column jecket 21 outwards launches with cross-wise direction, drives lateral column 22 to launch simultaneously, and cancel after exerting pressure, column jecket 21 and lateral column 22 still keep deployed condition.
Described crushed element 2 bottom has certain taper, facilitates bottom crushed element 2 and inserts exactly in pulp cavity.
Preferably, the skin of artificial joint of the present invention also scribbles aluminium oxide ceramics, zirconia ceramics, hydroxyapatite, titanium alloy, one of them coating of metal tantalum, makes artificial joint have better medical effect.
Using method of the present invention is shown in Figure 5:
S1. first excise the joint of pathological changes, expose pulp cavity opening, ensure that pulp cavity diameter is slightly larger than crushed element diameter;
S2. artificial joint crushed element of the present invention is inserted pulp cavity, because its tail end is conical design, so accurate, easyly pulp cavity opening can be aimed at;
S3. utilize the external compression pump 3 of water main, from one-way cock by compression pump 3 saline injection, when meeting to pressure, the folding shrinking column jecket of crushed element launches in marrow, and after maintaining suitable pressure, four lateral columns are close to pulp cavity inwall;
S4. closing presure pump 3, lateral column keeps deployed condition, completes artificial joint fixing in pulp cavity.
The actual effect of artificial joint of the present invention:
Crushed element inserts pulp cavity and without the need to expanding marrow with the form of compression diameter, or only needs near-end Limited Reamed, makes operation technique convenient;
The individual variation that all kinds of patient's pulp cavity exists can be met, as long as the sectional area of pulp cavity is less than the maximum secting area after crushed element expansion, lateral column and pulp cavity inwall can tight dociles, make stress equilibrium be distributed in whole backbone, the backbone's cracking that there will not be stress to concentrate to cause;
The rising that when space between lateral column contributes to reducing plug pin, marrow is intrinsic pressure, and owing to not expanding marrow, drop to minimum to the destruction of blood fortune in marrow, greatly reduce the risk of fat embolism;
In addition, the design of symmetrical lateral column also strengthens the anti-rotation performance of artificial joint, makes it fixing more stable.
Certainly artificial joint involved in the present invention is not merely defined in the structure in embodiment, any equivalent modifications of carrying out the present invention and substituting also all in category of the present invention.

Claims (4)

1. an artificial joint, is characterized in that, comprising: body part (1), crushed element (2), and described body part (1) is fixedly connected with crushed element (2);
Described body part (1) comprises emulation joint (11) and main backbone (12), and emulation joint (11) is positioned at main backbone (12) upper end;
Described main backbone (12) is the mode hollow out run through up and down, the connector (121) that main backbone (12) inner side is provided with;
The inner chamber of described connector (121) is provided with female thread;
Also be provided with check valve (122) in described main backbone (12), and described check valve (122) is positioned at the below of connector (121);
Described crushed element (2) is provided with the column jecket (21) be communicated with main backbone (12),
Described column jecket (21) upper end open, lower end closed;
The lateral surface of described column jecket (21) is provided with some outwardly lateral columns (22), at ambient pressure, column jecket (21) inwardly shrinks folding with cross-wise direction, during by high pressure, column jecket (21) outwards launches with cross-wise direction, drive lateral column (22) to launch simultaneously, and cancel exert pressure after, still keep deployed condition.
2. artificial joint according to claim 1, is characterized in that: described lateral column (22) is symmetrical set, and lateral column (22) exists interval each other.
3. artificial joint according to claim 1, is characterized in that: described crushed element (2) lower end has tapering, and the diameter of bottom face is minimum.
4. artificial joint according to claim 1, is characterized in that: the skin of described artificial joint also scribbles aluminium oxide ceramics, zirconia ceramics, hydroxyapatite, titanium alloy, one of them coating of metal tantalum.
CN201510907096.4A 2015-12-09 2015-12-09 Artificial joint Pending CN105326584A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201510907096.4A CN105326584A (en) 2015-12-09 2015-12-09 Artificial joint

Publications (1)

Publication Number Publication Date
CN105326584A true CN105326584A (en) 2016-02-17

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2508711Y (en) * 2001-03-27 2002-09-04 徐怀远 Pressing expansion self-locking intramedullary nail
US20050107802A1 (en) * 2003-11-19 2005-05-19 Vanasse Thomas M. Canal sizer and associated method
US20080133026A1 (en) * 2006-10-20 2008-06-05 Sio-Hou Lei Artificial bone and a method for making the same
CN201150576Y (en) * 2007-12-11 2008-11-19 国华 Novel whirlbone replacement joint prosthesis
CN201996691U (en) * 2011-03-16 2011-10-05 中国人民解放军军事医学科学院附属医院 Artificial hip joint with medullary cavity stem capable of pressurized expansion
CN202821718U (en) * 2012-01-13 2013-03-27 北京爱康宜诚医疗器材股份有限公司 Group matching femoral stem
CN202821717U (en) * 2011-12-30 2013-03-27 北京爱康宜诚医疗器材股份有限公司 Airfoil-shaped femoral stem with circular bottom
CN205339219U (en) * 2015-12-09 2016-06-29 上海市第一人民医院 Joint prosthesis

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2508711Y (en) * 2001-03-27 2002-09-04 徐怀远 Pressing expansion self-locking intramedullary nail
US20050107802A1 (en) * 2003-11-19 2005-05-19 Vanasse Thomas M. Canal sizer and associated method
US20080133026A1 (en) * 2006-10-20 2008-06-05 Sio-Hou Lei Artificial bone and a method for making the same
CN201150576Y (en) * 2007-12-11 2008-11-19 国华 Novel whirlbone replacement joint prosthesis
CN201996691U (en) * 2011-03-16 2011-10-05 中国人民解放军军事医学科学院附属医院 Artificial hip joint with medullary cavity stem capable of pressurized expansion
CN202821717U (en) * 2011-12-30 2013-03-27 北京爱康宜诚医疗器材股份有限公司 Airfoil-shaped femoral stem with circular bottom
CN202821718U (en) * 2012-01-13 2013-03-27 北京爱康宜诚医疗器材股份有限公司 Group matching femoral stem
CN205339219U (en) * 2015-12-09 2016-06-29 上海市第一人民医院 Joint prosthesis

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