CN1481766A - Rolling-type artificial hip joint - Google Patents

Rolling-type artificial hip joint Download PDF

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Publication number
CN1481766A
CN1481766A CNA031296238A CN03129623A CN1481766A CN 1481766 A CN1481766 A CN 1481766A CN A031296238 A CNA031296238 A CN A031296238A CN 03129623 A CN03129623 A CN 03129623A CN 1481766 A CN1481766 A CN 1481766A
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CN
China
Prior art keywords
rolling
femoral head
hip joint
face
shank portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CNA031296238A
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Chinese (zh)
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CN1209077C (en
Inventor
王成焘
于仲嘉
黄玉池
赵平
袁建兵
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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Priority to CN 03129623 priority Critical patent/CN1209077C/en
Publication of CN1481766A publication Critical patent/CN1481766A/en
Application granted granted Critical
Publication of CN1209077C publication Critical patent/CN1209077C/en
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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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof

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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 rolling artificial hip joint as one kind of artificial bone joint includes femoral head part, rolling part, prosthesis handle part and circular screw nut. The rolling part consists of two rolling bearings separated with two spacing rings, and the rolling bearings have their inner rings matched with the main shaft of the prosthesis handle part and outer rings fitted with the inner ring of connecting part in the femoral head part. By means of the rolling bearings, the present invention changes the sliding friction between the artificial semi-hip joint and the natural cotyloid cavity into rolling friction in bending-stretching motion direction, and this reduces the wear of prosthesis greatly, prolongs the service life, lowers the production cost and avoids the toxic action of polyethylene and meets the treating requirement of patient.

Description

The rolling artificial hip joint
Technical field
What the present invention relates to is a kind of artificial hip joint, and particularly a kind of rolling artificial hip joint belongs to medical apparatus and instruments artificial joint field.
Background technology
Usually Replacement of Hip Joint generally is divided into two kinds: whole coxa substitution and half hip replacement.Thereby artificial hip joint also is divided into two classes: full hip-joint and partial hip joint.The ingredient of full hip-joint specifically is divided into two parts.A part is bulb (being head), and it is made by best the firmest alloy, and the surface is very smooth.In order to lay adaptogen because of the body of a dried shape is arranged below, the bulb, it can insert in the epimere pulp cavity of human femur under loading (Thigh bone), is bonded together tightly with femur.The general associated methods that uses has two kinds: bone cement is fixing to be fixed with biology.Another part is a mortar portion.And half hip prosthesis does not generally comprise mortar portion.Though the structure of present hip prosthesis has nothing in common with each other, what articular surface all adopted is the sliding friction mode.The defective of these artificial hip joints is: metal prostheses and polyethylene acetabular bone produce the polyethylene abrasive particle to mill, after being absorbed by cell, cause a series of problems such as bone dissolving of cell.
Find by literature search, Chinese patent application number is: 02137177.6, denomination of invention is: rolling artificial knee joint, publication number is: 1403064, this patent readme is: mainly comprise: femoral component, rolling element, axle and tibial component, its connected mode is: two raceways are respectively arranged on femoral component and the axle, corresponding raceway is combined to form two cross sections and is circular annulus, rolling element is arranged in the annulus, tibial component is connected with axle, axle is in the interior ectocondyle of femoral component, femoral component, rolling element, axle three has formed the structure that is equal to two rolling bearings.This patent adopts the roller friction mode, has reduced the prosthese wearing and tearing, has prolonged service life, has reduced production cost, has avoided poly bio-toxicity effect.But it is an artificial knee joint, can not be used for the displacement of hip joint.Further retrieval through to prior art still finds no and the identical or similar bibliographical information of rolling artificial hip joint theme of the present invention so far.
Summary of the invention
The present invention is directed to the deficiencies in the prior art and defective, a kind of rolling artificial hip joint is provided.Make it realize the Qu Heshen of hip joint by rolling bearing, when having guaranteed proper motion, bend and stretch the frictional resistance when having reduced motion under the situation of amplitude effectively, greatly reduced the wear extent of metal, the quantity and the particulate size of metal filings are reduced, and, this prosthese does not adopt polyethylene part, thereby has avoided the appearance of polyethylene abrasive particle fully, has therefore avoided the caused problem of polyethylene abrasive particle.
The present invention realizes according to following technical scheme, the present invention includes: partial femoral head, rolling part, prosthese shank portion and round nut, its connected mode is: the part of rolling is made up of two rolling bearings, middle by two cage rings isolation, the main shaft of the inner ring of rolling bearing and prosthese shank portion closely cooperates and is integral, be fixed on the prosthese shank portion by the inner ring of the screw thread on the main shaft with round nut rolling bearing, the connector inner surface of the outer ring of rolling bearing and partial femoral head closely cooperates and is one, thereby the song that forms artificial hip joint is stretched motion.In this motion, partial femoral head and prosthese shank portion be relative motion by the rolling bearing part, thereby the friction mode of artificial hip joint is rolling friction.
Whole partial femoral head comprises: connector, smooth sphere, end face, the face of cylinder, bearing left side stationary plane, the right stationary plane of bearing, die cavity, its connected mode is: smooth sphere and natural acetabular bone constitute the hip joint face, the end face and the face of cylinder cooperate with prosthese shank portion correlation surface, maintain a certain distance, so that partial femoral head rotates flexibly with respect to the prosthese shank portion and minim gap is arranged, a bearing left side, right stationary plane then is used for housing washer location and fixing, connector inwall and bearing outer ring cooperate closely, make no relative motion, die cavity (being the cavity that bearing and partial femoral head constitute) is used to hold round nut and weight reduction.
The rolled portion branch comprises: two rolling bearings and two cage rings, its connected mode is: two cage rings are isolated the inside and outside circle of two rolling bearings respectively, the connector inner surface of housing washer and partial femoral head closely cooperates, and the main shaft of rolling bearing inner ring and prosthese shank portion closely cooperates.
The prosthese shank portion comprises: do in the marrow, sphere, end face, step and main shaft, its mode of connection is: dried in the marrow is that prosthese inserts the part in femur metaphysis and the pulp cavity, the smooth sphere same radius of sphere and partial femoral head, concentric fit forms a big sphere, end face and partial femoral head respective face matched in clearance, main shaft and the rolling bearing inner ring no relative motion that closely cooperates, step then is positioned at the inner ring of rolling bearing on the main shaft.
One section thread connection on the main shaft on round nut and the prosthese shank portion is fixed on the part of rolling on the main shaft jointly by step.
When assembling partial femoral head, rolling part and prosthese shank portion, connector with partial femoral head is enclosed within on the step of prosthese shank portion earlier, between main shaft and connector inner surface, pack into successively bearing, cage ring and bearing, by screwing fixedly rolling bearing of round nut, load onto ball cover by the screw thread of connector and ball cover (connecting piece and ball cover provide and the bonded smooth sphere of acetabular bone jointly) at last and tighten up.
The invention belongs to partial hip joint, have bend and stretch, in turn up, rotate three motions, thereby make the model of action of prosthese approach the model of action of normal hip joint.The design of employing staight shank, outside and side are wedge shape in it, help prosthese and fix; Not windowing in the handle surface, increases the bone cement effect.The apparent height polishing reduces the generation of small chip.The employing bone cement is fixed, and has reduced the dissolved incidence rate of Periprosthetic bone.
The present invention has substantive distinguishing features and marked improvement, the present invention becomes rolling friction by rolling bearing with the sliding friction between original semi-artificial hip joint and the natural acetabular bone, greatly reduce the prosthese wearing and tearing, prolonged service life, reduced production cost, avoid poly bio-toxicity effect, satisfied the demand of vast domestic patient treatment hip joint, had obvious social and objective economic benefit.
Description of drawings
Fig. 1 structural representation of the present invention
Fig. 2 partial femoral head structural representation of the present invention
Fig. 3 rolled portion separation structure of the present invention sketch map
Fig. 4 prosthese shank portion of the present invention structural representation
The specific embodiment
As shown in Figure 1, the present invention includes: partial femoral head 1, rolling part 2, prosthese shank portion 3 and round nut 4, its connected mode is: rolling part 2 is by two rolling bearings 13,14 form, middle by two cage rings 15,16 isolate, the main shaft 21 of the inner ring of rolling bearing and prosthese shank portion 3 closely cooperates and is integral, with round nut 4 by the screw thread on the main shaft 21 with rolling bearing 13,14 inner ring is fixed on the prosthese shank portion 3, connector 6 inner surfacies of the outer ring of rolling bearing and partial femoral head 1 closely cooperate and are one, be fixed on the partial femoral head 1 by the outer ring of partial femoral head 1 with rolling bearing, partial femoral head 1 and prosthese shank portion 3 pass through rolling bearing part 2 and relative motion.
As shown in Figure 2, whole partial femoral head 1 comprises: connector 6, smooth sphere 7, end face 8, the face of cylinder 9, bearing left side stationary plane 10, the right stationary plane 11 of bearing, die cavity 12, its connected mode is: smooth sphere 7 constitutes the hip joint face with acetabular bone, the end face 8 and the face of cylinder 9 cooperate with prosthese shank portion 3 correlation surfaces, maintain a certain distance, so that partial femoral head 1 rotates flexibly with respect to prosthese shank portion 3 and minim gap is arranged, a bearing left side, right stationary plane 10,11 are used for rolling bearing 13, location, 14 outer rings and fixing, connector 6 inner surfacies and rolling bearing 13,14 outer rings cooperate closely, make no relative motion, die cavity 12 is cavitys that bearing and partial femoral head constitute, and is used to hold round nut 4 and weight reduction.
As shown in Figure 3, rolling part 2 comprises: 13,14 and two cage rings 15,16 of two rolling bearings, its connected mode is: two cage rings 15,16 are isolated the inside and outside circle of two rolling bearings 13,14 respectively, connector 6 inner surfacies of rolling bearing 13,14 outer rings and partial femoral head 1 closely cooperate, and the main shaft 21 of rolling bearing 13,14 inner rings and prosthese shank portion 3 closely cooperates.
As shown in Figure 4, prosthese shank portion 3 comprises: do 17 in the marrow, sphere 18, end face 19, step 20 and main shaft 21, its mode of connection is: doing 17 in the marrow is that prosthese inserts the part in femur metaphysis and the pulp cavity, smooth sphere 7 same radius of sphere 18 and partial femoral head 1, concentric fit forms a big sphere, end face 19 and partial femoral head 1 respective face matched in clearance, main shaft 21 and rolling bearing 13, the 14 inner rings no relative motion that closely cooperates, step 20 then is positioned at the inner ring of rolling bearing 13,14 on the main shaft 21.
One section thread connection on the main shaft 21 on round nut 4 and the prosthese shank portion 3 is fixed on rolling part 2 on the main shaft 21 jointly by step 20.
When assembling partial femoral head 1, rolling part 2 and prosthese shank portion 3, connector 6 with partial femoral head 1 is enclosed within on the step 20 of prosthese shank portion 3 earlier, between main shaft 21 and connector 6 inner surfacies, pack into successively rolling bearing 13, cage ring 15,16 and rolling bearing 14, by screwing fixedly rolling bearing 13,14 of round nut 4, load onto ball cover 5 by the screw thread of connector 6 and ball cover 5 at last and tighten up.

Claims (7)

1, a kind of rolling artificial hip joint, comprise: partial femoral head (1), roll partly (2), prosthese shank portion (3) and round nut (4), it is characterized in that, connected mode is: the part (2) of rolling is by two rolling bearings (13), (14) form, middle by two cage rings (15), (16) isolate, rolling bearing (13), the main shaft (21) of inner ring (14) and prosthese shank portion (3) closely cooperates and is integral, with round nut (4) by the screw thread on the main shaft (21) with rolling bearing (13), (14) inner ring is fixed on the prosthese shank portion (3), connector (6) inner surface of the outer ring of rolling bearing and partial femoral head (1) closely cooperates and is one, by partial femoral head (1) with rolling bearing (13), (14) outer ring is fixed on the partial femoral head (1).
2, rolling artificial hip joint according to claim 1, it is characterized in that, whole partial femoral head (1) comprising: connector (6), smooth sphere (7), end face (8), the face of cylinder (9), bearing left side stationary plane (10), the right stationary plane (11) of bearing, die cavity (12), its connected mode is: smooth sphere (7) constitutes the hip joint face with natural acetabular bone, end face (8) and the face of cylinder (9) cooperate with prosthese shank portion (3) correlation surface, a bearing left side, right stationary plane (10), (11) then be used for housing washer location and fixing, connector (6) inner surface and bearing outer ring cooperate closely, die cavity (12) is the cavity that bearing and partial femoral head constitute, and holds round nut (4).
3, rolling artificial hip joint according to claim 1 and 2, it is characterized in that end face (8) and the face of cylinder (9) cooperate with prosthese shank portion (3) correlation surface, and certain distance is arranged, so that partial femoral head (1) rotates flexibly with respect to prosthese shank portion (3) and minim gap is arranged
4, rolling artificial hip joint according to claim 1, it is characterized in that, the part (2) of rolling comprising: two rolling bearings (13), (14) and two cage rings (15), (16), its connected mode is: two cage rings (15), (16) isolate the inside and outside circle of two rolling bearings (13), (14) respectively, connector (6) inner surface of housing washer (13), (14) and partial femoral head (1) closely cooperates, and the main shaft (21) of rolling bearing (13), (14) inner ring and prosthese shank portion (3) closely cooperates.
5, rolling artificial hip joint according to claim 1, it is characterized in that, prosthese shank portion (3) comprising: do in the marrow (17), sphere (18), end face (19), step (20) and main shaft (21), its mode of connection is: doing (17) in the marrow is that prosthese inserts the part in femur metaphysis and the pulp cavity, smooth sphere (7) same radius of sphere (18) and partial femoral head (1), concentric fit forms a big sphere, end face (19) and partial femoral head (1) respective face matched in clearance, main shaft (21) and rolling bearing (13), (14) the inner ring no relative motion that closely cooperates, step (20) is then with rolling bearing (13), (14) inner ring is positioned on the main shaft (21).
6, rolling artificial hip joint according to claim 1 or 5 is characterized in that, one section thread connection on the main shaft (21) on round nut (4) and the prosthese shank portion (3) is fixed on the part (2) of rolling on the main shaft (21) jointly by step (20).
7, rolling artificial hip joint according to claim 1 is characterized in that, adopts the staight shank design, and outside and side are wedge shape in it.
CN 03129623 2003-07-03 2003-07-03 Rolling-type artificial hip joint Expired - Fee Related CN1209077C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 03129623 CN1209077C (en) 2003-07-03 2003-07-03 Rolling-type artificial hip joint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 03129623 CN1209077C (en) 2003-07-03 2003-07-03 Rolling-type artificial hip joint

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CN1481766A true CN1481766A (en) 2004-03-17
CN1209077C CN1209077C (en) 2005-07-06

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7179298B2 (en) * 2005-05-27 2007-02-20 Greenlee Wilfred E Hip prosthesis and the use thereof
CN107567321A (en) * 2015-05-13 2018-01-09 史密夫和内修有限公司 The reinforcer that anatomy removes
CN107736954A (en) * 2017-10-20 2018-02-27 王锐 Roll joint slidingtype artificial hip joint

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7179298B2 (en) * 2005-05-27 2007-02-20 Greenlee Wilfred E Hip prosthesis and the use thereof
CN107567321A (en) * 2015-05-13 2018-01-09 史密夫和内修有限公司 The reinforcer that anatomy removes
US11116637B2 (en) 2015-05-13 2021-09-14 Smith & Nephew, Inc. Anatomically relieved augments
US12048627B2 (en) 2015-05-13 2024-07-30 Smith & Nephew, Inc. Anatomically relieved augments
CN107736954A (en) * 2017-10-20 2018-02-27 王锐 Roll joint slidingtype artificial hip joint
CN107736954B (en) * 2017-10-20 2019-07-23 王锐 Roll joint slidingtype artificial hip joint

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Publication number Publication date
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Granted publication date: 20050706