US3875593A - Artificial hip-joint - Google Patents
Artificial hip-joint Download PDFInfo
- Publication number
- US3875593A US3875593A US349965A US34996573A US3875593A US 3875593 A US3875593 A US 3875593A US 349965 A US349965 A US 349965A US 34996573 A US34996573 A US 34996573A US 3875593 A US3875593 A US 3875593A
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- US
- United States
- Prior art keywords
- endoprosthesis
- head
- acetabulum
- insertion piece
- femur
- 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.)
- Expired - Lifetime
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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
- A61F2/30721—Accessories
- A61F2/30739—Devices connected to the proximal part of an endoprosthetic femoral shaft for reinforcing or replacing the trochanters, e.g. the greater trochanter
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- 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
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- A61F2/32—Joints for the hip
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- A—HUMAN NECESSITIES
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- 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
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- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
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- 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
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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
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- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
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- 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
- A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
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- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
- A61F2002/30845—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes with cutting edges
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- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
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- 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
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- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
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- 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
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- 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
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Definitions
- ABSTRACT An artificial hip-joint in which there is provided an endoprosthesis for the acetabulum, of which the outer surface is adapted to be embedded in the bony tissue of the pelvis, an endoprosthesis for the proximal portion of the femur having a head with a spherical surface rigidly connected by a neck with a shaft introduced into the femoral medu'llary canal, and an insertion piece providing for a hinged joint between the acetabulum endoprosthesis and the endoprosthesis of the proximal portion of the femur, with the insertion piece having an inner spherical surface interacting with the spherical surface of the head.
- the height of the cavity of the insertion piece defined by the inner spherical surface is smaller than the radius of the head, and the insertion piece is fixed in the seat of the acctabulum endoprosthesis by a nut.
- the present invention relates to artificial hip-joints employed in intra-articular prosthetic replacement surgery thereof.
- the invention is designed for restoration of hip-joint mobility lost in Bekhterevs disease, arthritis deformans, arthritis infectiosa, aceptic necrosis of the femoral head, as well as in certain femoral neck fractures in the aged.
- Artificial hip-joints are known in the art comprising an endoprosthesis of the acetabulum and an endoprosthesis ofthe proximal portion of the femur which incorporate a head, a neck, and a shaft introduced into the femoral medullary canal.
- the known acetabulum endoprosthesis may be of several designs, both in terms of the outer surface and the inner surface which is to be in contact with the head of the endoprosthesis of the proximal portion of the femur.
- the outer surface of the acetabulum endoprosthesis is provided with a single long screw which is screwed through the acetabulum and into the wing of the iliac bone of the patient, thereby immobilizing the acetabulum endoprosthesis in the pelvis.
- the inner surface of this endoprosthesis of the acetabulum is semispherical in shape and the head of the endoprosthesis of the proximal portion of the femur is immersed into it to a depth equal to its diameter and remains there unfixed.
- Such a design has a disadvantage in that there exists the possibility of dislocating the head of the endoprosthesis of the proximal portion of the femur from the acetabulum endoprosthesis.
- Another known artificial hip-joint comprises an acetabulum endoprosthesis, of which the outer surface is studded with tenons which help cement the acetabulum endoprosthesis in the pelvis (see: teta Orthopaedica Belgica, 1965, Vol. 31, No. 5, pp. 68l-97).
- the inner surface of this endoprosthesis is formed as a hemisphere, where the head of the endoprosthesis is fitted into the proximal portion of the femur.
- the outer surface of the acetabulum endoprosthesis may also be provided with blades having apertures, through which the burgeoning bony tissue may advance (see: U.S.S.R. Inventors Certificate No. 278,022, Cl. d l/Ol
- the inner surface of this endoprosthesis of the acetabulum has a seat adapted to receive an insertion piece which is made in two halves.
- the outer surface of the insertion piece is designed to correspond to the shape of the seat, whereas its inner surface is formed as a sphere enveloping the spherical head of the endoprosthesis of the proximal portion of the femur such that the contact area is larger than the head hemisphere.
- the mentioned insertion piece is designed to couple the acetabulum endoprosthesis with the endoprosthesis of the proximal portion of the femur.
- the coupling is effected by riveting the ends of the insertion piece onto the outer surface of the acetabulum endoprosthesis, thereby achieving a permanent connection.
- An object of the present invention is to provide an artificial hip-joint, which is dismountable and which may be assembled durning surgery and which simultaneously prevents the head of the endoprosthesis of the proximal portion of the femur from being dislocated from the acetabulum endoprosthesis.
- the present invention contemplates providing an artificial hip-joint, comprising an endoprosthesis for the acetabulum, which the outer surface is adapted to be immobilized in the bony tissue of the pelvis and which incorporates a seat, and an endoprosthesis for the proximal portion of the femur having a head with a spherical surface, the head being rigidly coupled with the neck of a shaft introduced into the femoral medullary canal, and with there being an insertion piece mounted between the surface of the seal and the outer surface of the head providing for a hinged joint therebetween, the inner surface of said insertion piece having a spherical shape and interacting with the spherical surface of the head, wherein, in accordance with the invention, the height of the cavity of the insertion piece defined by the inner spherical surface thereof is less than the radius of the head, and with the insertion piece being fixed in the seat of the acetabulum endopro
- the artificial hip-joint of this invention offers a number of advantages.
- the endoprosthesis of the acetabulum and that of the proximal portion of the femur may be installed independently, which provides for the precision and the security of impaction thereof to the bone. Furthermore, the proposed design permits the replacing of only one of the endoprostheses, if same is required.
- the secure coupling of the two endoprostheses of the proposed artificial hip-joint eliminates the possibility of any dislocation of the endoprosthesis from the proximal portion of the femur or out of the acetabulum endoprosthesis.
- the proposed artificial hip-joint comprises an endoprosthesis 1 of the acetabulum and an endoprosthesis 2 of the proximal portion of the femur.
- the endoprosthesis 1 of the acetabulum has a plurality of blades 3 mounted exteriorly thereof in tiers one above the other.
- the blades have tapered edges and a plurality of cavities 4 extending therethrough for the advancement of the burgeoning bony tissue.
- a seat 5 is formed in another surface of the endoprosthesis 1 of the acetabulum, which seat may be of a through type (as shown in the drawing) and of a non-through type.
- the endoprosthesis 2 of the proximal portion of the femur comprises a head 6 having a spherical surface, a neck 7, a stop lug 8 and a tapered shaft 9 which is to be introduced into the femoral medullary canal.
- the shaft 9 has a pin 11 for fixing the trochanter ma- J01.
- an insertion piece 12 is provided between the head 6 and the seat 5.
- the outer surface of the insertion piece 12 corresponds in shape to the inner surface of the seat 5, whereas the inner surface of the insertion piece 12 is spherical.
- the height of the cavity of the insertion piece 12 defined by the inner spherical surface thereof is smaller than the radius of the head 6 by a value a.
- the insertion piece 12 is fixed in the seat 5 by a nut 13, of which the inner surface interacting with the head 6 is spherical.
- the outer surface of the nut 13 is threaded, and the seat 5 has a corresponding thread at the section which interacts with the nut 13.
- the nut 13 is provided with a locking means 14 to prevent self-unscrewing. If the endoprosthesis 2 of the proximal portion of the femur is'assembled by the manufacturer. the nut 13 is fitted over the neck 7 before the head is press-fitted in place. The nut 13 may also be fitted at the side of the shaft 9 introduced into the femoral medullary canal. In such a case, a large-diameter washer should be placed under the stop lug 8 after the nut 13 has been fitted.
- the nut 13 is provided with lugs serving for convenience and for nut tightening speed during surgery.
- the height and thickness of the nut 13 are chosen such that the nut l3 should ensure a reliable coupling and have optimum mobility for the head 6 relative to the endoprosthesis 1. With this in view, it is recommended that the height of the nut 13 be materially in excess of the value a and that the nut 13 be flush with the plane of the last blade 3, as indicated in the draw-
- the artificial hip-joint of this invention is installed during surgery in the following manner. Prior to surgery the endoprosthesis 1 of the acetabulum is separated frorn the endoprosthesis 2 of the proximal portion of the femur by unscrewing the nut 13.
- the artificial hip-joint of this invention facilitates the replacement operation, provides for the interchangeability of its various component parts and eliminates altogether any possibility of the dislocation of the endoprosthesis from the proximal portion of the femur, or out of the endoprosthesis of the acetabulum.
- An artificial hip-joint comprising: an endoprosthesis for an acetabulum having a seat; said endoprosthesis of the acetabulum having an outer surface adapted to be fixed in the bony tissue of the pelvis; an endoprosthesis for the proximal portion of the femur having a head provided with a spherical surface, a neck and a shaft rigidly connected by way of said neck with said head of said endoprosthesis of the proximal portion of the femur, said shaft being designed for introduction into the femoral medullary canal; an insertion piece in stalled between the surface of said seat and said spherical surface of the head and providing for a hinged joint between said endoprosthesis of the proximal portion of the femur; said insertion piece having a spherical inner surface which interacts with said spherical surface of the head; a cavity for said insertion piece defined by said inner spherical surface of the
Abstract
An artificial hip-joint in which there is provided an endoprosthesis for the acetabulum, of which the outer surface is adapted to be embedded in the bony tissue of the pelvis, an endoprosthesis for the proximal portion of the femur having a head with a spherical surface rigidly connected by a neck with a shaft introduced into the femoral medullary canal, and an insertion piece providing for a hinged joint between the acetabulum endoprosthesis and the endoprosthesis of the proximal portion of the femur, with the insertion piece having an inner spherical surface interacting wtih the spherical surface of the head. The height of the cavity of the insertion piece defined by the inner spherical surface is smaller than the radius of the head, and the insertion piece is fixed in the seat of the acetabulum endoprosthesis by a nut.
Description
United States Patent [191 Shersher 1 Apr. 8, 1975 I 1 ARTIFICIAL HIP-JOINT [76] Inventor: Yakov Isaevich Shersher, 7
Degtyarny pereulok 3 kv. 42, Saratovu U.S.S.R.
22 Filed: Apr.Il.I973
211 App1.No.:349,965
[30] Foreign Application Priority Data May 4, 1972 U.S.S.R 1776053 [52] U.S.CI. 3/1; 128/92 C; 128/92 CA [51] Int. Cl. A6lf 1/24 [58] Field of Search... 3/1; 128/92 CA, 92 C. 92 R [56] References Cited UNITED STATES PATENTS 3.053.251 9/1962 Black et a1. 128/92 CA 3.1)(1/740 12/1962 Hahoush 128/92 CA FOREIGN PATENTS OR APPLICATIONS Ill-$1640 7/1953 France 128/92 C Primary E.\uminerRonald L. Frinks Attorney, Agent, or FirmHolman & Stern [57] ABSTRACT An artificial hip-joint in which there is provided an endoprosthesis for the acetabulum, of which the outer surface is adapted to be embedded in the bony tissue of the pelvis, an endoprosthesis for the proximal portion of the femur having a head with a spherical surface rigidly connected by a neck with a shaft introduced into the femoral medu'llary canal, and an insertion piece providing for a hinged joint between the acetabulum endoprosthesis and the endoprosthesis of the proximal portion of the femur, with the insertion piece having an inner spherical surface interacting with the spherical surface of the head. The height of the cavity of the insertion piece defined by the inner spherical surface is smaller than the radius of the head, and the insertion piece is fixed in the seat of the acctabulum endoprosthesis by a nut.
1 Claim, 1 Drawing Figure ARTIFICIAL HIP-JOINT BACKGROUND OF THE INVENTION The present invention relates to artificial hip-joints employed in intra-articular prosthetic replacement surgery thereof.
The invention is designed for restoration of hip-joint mobility lost in Bekhterevs disease, arthritis deformans, arthritis infectiosa, aceptic necrosis of the femoral head, as well as in certain femoral neck fractures in the aged.
PRIOR ART Artificial hip-joints are known in the art comprising an endoprosthesis of the acetabulum and an endoprosthesis ofthe proximal portion of the femur which incorporate a head, a neck, and a shaft introduced into the femoral medullary canal. The known acetabulum endoprosthesis may be of several designs, both in terms of the outer surface and the inner surface which is to be in contact with the head of the endoprosthesis of the proximal portion of the femur.
In one of the embodiments of the known artificial hip-joint, the outer surface of the acetabulum endoprosthesis is provided with a single long screw which is screwed through the acetabulum and into the wing of the iliac bone of the patient, thereby immobilizing the acetabulum endoprosthesis in the pelvis. The inner surface of this endoprosthesis of the acetabulum is semispherical in shape and the head of the endoprosthesis of the proximal portion of the femur is immersed into it to a depth equal to its diameter and remains there unfixed. (see: Journal of Bone and Joint Surgery, Vol. 50B. No. 4, pp. 720-31).
Such a design has a disadvantage in that there exists the possibility of dislocating the head of the endoprosthesis of the proximal portion of the femur from the acetabulum endoprosthesis.
Another known artificial hip-joint comprises an acetabulum endoprosthesis, of which the outer surface is studded with tenons which help cement the acetabulum endoprosthesis in the pelvis (see: teta Orthopaedica Belgica, 1965, Vol. 31, No. 5, pp. 68l-97). The inner surface of this endoprosthesis is formed as a hemisphere, where the head of the endoprosthesis is fitted into the proximal portion of the femur.
This design is likewise insecure against the dislocation possibilities of the head of the endoprosthesis of the proximal portion of the femur. Another disadvantage is the need for cement.
The outer surface of the acetabulum endoprosthesis may also be provided with blades having apertures, through which the burgeoning bony tissue may advance (see: U.S.S.R. Inventors Certificate No. 278,022, Cl. d l/Ol The inner surface of this endoprosthesis of the acetabulum has a seat adapted to receive an insertion piece which is made in two halves. The outer surface of the insertion piece is designed to correspond to the shape of the seat, whereas its inner surface is formed as a sphere enveloping the spherical head of the endoprosthesis of the proximal portion of the femur such that the contact area is larger than the head hemisphere.
The mentioned insertion piece is designed to couple the acetabulum endoprosthesis with the endoprosthesis of the proximal portion of the femur. The coupling is effected by riveting the ends of the insertion piece onto the outer surface of the acetabulum endoprosthesis, thereby achieving a permanent connection.
The disadvantages of such artificial hip-joints consist in that they are difficult to install and their separate component parts are not interchangeable.
Thus, out of the known artificial hip-joints, some are dismountable but not secure against the dislocation of the head of the endoprosthesis of the proximal portion of the femur from the acetabulum endoprosthesis, whereas others are non-dismountable and unwieldy not only at surgery, but also when it is required to replace one of the component parts of the artificial hip-joint.
SUMMARY OF THE INVENTION An object of the present invention, therefore. is to provide an artificial hip-joint, which is dismountable and which may be assembled durning surgery and which simultaneously prevents the head of the endoprosthesis of the proximal portion of the femur from being dislocated from the acetabulum endoprosthesis.
In accordance with the above and other objects, the present invention contemplates providing an artificial hip-joint, comprising an endoprosthesis for the acetabulum, which the outer surface is adapted to be immobilized in the bony tissue of the pelvis and which incorporates a seat, and an endoprosthesis for the proximal portion of the femur having a head with a spherical surface, the head being rigidly coupled with the neck of a shaft introduced into the femoral medullary canal, and with there being an insertion piece mounted between the surface of the seal and the outer surface of the head providing for a hinged joint therebetween, the inner surface of said insertion piece having a spherical shape and interacting with the spherical surface of the head, wherein, in accordance with the invention, the height of the cavity of the insertion piece defined by the inner spherical surface thereof is less than the radius of the head, and with the insertion piece being fixed in the seat of the acetabulum endoprosthesis by a nut, of which the surface interacting with the head is spherical in shape.
The artificial hip-joint of this invention offers a number of advantages.
The endoprosthesis of the acetabulum and that of the proximal portion of the femur may be installed independently, which provides for the precision and the security of impaction thereof to the bone. Furthermore, the proposed design permits the replacing of only one of the endoprostheses, if same is required.
The secure coupling of the two endoprostheses of the proposed artificial hip-joint eliminates the possibility of any dislocation of the endoprosthesis from the proximal portion of the femur or out of the acetabulum endoprosthesis.
BRIEF DESCRIPTION OF THE DRAWINGS Other objects and advantages of the present invention will be appreciated from the following description of one embodiment thereof taken in conjunction with the accompanying drawing in which the sole figure is a partial section of an artificial hip-joint.
The proposed artificial hip-joint comprises an endoprosthesis 1 of the acetabulum and an endoprosthesis 2 of the proximal portion of the femur.
The endoprosthesis 1 of the acetabulum has a plurality of blades 3 mounted exteriorly thereof in tiers one above the other. The blades have tapered edges and a plurality of cavities 4 extending therethrough for the advancement of the burgeoning bony tissue. A seat 5 is formed in another surface of the endoprosthesis 1 of the acetabulum, which seat may be of a through type (as shown in the drawing) and of a non-through type.
The endoprosthesis 2 of the proximal portion of the femur comprises a head 6 having a spherical surface, a neck 7, a stop lug 8 and a tapered shaft 9 which is to be introduced into the femoral medullary canal. There are apertures 10 formed in the shaft 9, through which the burgeoning bony tissue may advance.
The shaft 9 has a pin 11 for fixing the trochanter ma- J01.
In order to provide a hinged joint between the endoprosthesis 1 of the acetabulum and the endoprosthesis 2 of the proximal portion of the femur, an insertion piece 12 is provided between the head 6 and the seat 5. The outer surface of the insertion piece 12 corresponds in shape to the inner surface of the seat 5, whereas the inner surface of the insertion piece 12 is spherical. The height of the cavity of the insertion piece 12 defined by the inner spherical surface thereof is smaller than the radius of the head 6 by a value a. The insertion piece 12 is fixed in the seat 5 by a nut 13, of which the inner surface interacting with the head 6 is spherical. The outer surface of the nut 13 is threaded, and the seat 5 has a corresponding thread at the section which interacts with the nut 13. The nut 13 is provided with a locking means 14 to prevent self-unscrewing. If the endoprosthesis 2 of the proximal portion of the femur is'assembled by the manufacturer. the nut 13 is fitted over the neck 7 before the head is press-fitted in place. The nut 13 may also be fitted at the side of the shaft 9 introduced into the femoral medullary canal. In such a case, a large-diameter washer should be placed under the stop lug 8 after the nut 13 has been fitted.
Also, the nut 13 is provided with lugs serving for convenience and for nut tightening speed during surgery.
The height and thickness of the nut 13 are chosen such that the nut l3 should ensure a reliable coupling and have optimum mobility for the head 6 relative to the endoprosthesis 1. With this in view, it is recommended that the height of the nut 13 be materially in excess of the value a and that the nut 13 be flush with the plane of the last blade 3, as indicated in the draw- The artificial hip-joint of this invention is installed during surgery in the following manner. Prior to surgery the endoprosthesis 1 of the acetabulum is separated frorn the endoprosthesis 2 of the proximal portion of the femur by unscrewing the nut 13.
The endoprosthesis l of the acetabulum is impacted into the depression in the patients pelvis prepared in advance. Then the shaft 9 of the endoprosthesis 2 of the proximal portion of the femur is impacted into the patients femoral medullary canal prepared to the required size. The insertion piece 12 of the head 6 of the endoprosthesis 2 is then inserted into the endoprosthesis 1 of the acetabulum, after which the head 6 with the insertion piece 12 is fixed by the nut 13.
After the nut has been tightened, it is finally locked.
The artificial hip-joint of this invention facilitates the replacement operation, provides for the interchangeability of its various component parts and eliminates altogether any possibility of the dislocation of the endoprosthesis from the proximal portion of the femur, or out of the endoprosthesis of the acetabulum.
What is claimed is:
1. An artificial hip-joint comprising: an endoprosthesis for an acetabulum having a seat; said endoprosthesis of the acetabulum having an outer surface adapted to be fixed in the bony tissue of the pelvis; an endoprosthesis for the proximal portion of the femur having a head provided with a spherical surface, a neck and a shaft rigidly connected by way of said neck with said head of said endoprosthesis of the proximal portion of the femur, said shaft being designed for introduction into the femoral medullary canal; an insertion piece in stalled between the surface of said seat and said spherical surface of the head and providing for a hinged joint between said endoprosthesis of the proximal portion of the femur; said insertion piece having a spherical inner surface which interacts with said spherical surface of the head; a cavity for said insertion piece defined by said inner spherical surface of the insertion piece; the height of said cavity being less than the radius of said head; a nut for fixing said insertion piece in said seat of said endoprosthesis 0f the acetabulum; said nut having a spherical surface interacting with said head and an external screw thread which cooperates with an internal screw thread of said seat, the nut having a lower end flush with the plane of the lower end of the endoprosthesis of the acetabulum and means for locking said
Claims (1)
1. An artificial hip-joint comprising: an endoprosthesis for an acetabulum having a seat; said endoprosthesis of the acetabulum having an outer surface adapted to be fixed in the bony tissue of the pelvis; an endoprosthesis for the proximal portion of the femur having a head provided with a spherical surface, a neck and a shaft rigidly connected by way of said neck with said head of said endoprosthesis of the proximal portion of the femur, said shaft being designed for introduction into the femoral medullary canal; an insertion piece installed between the surface of said seat and said spherical surface of the head and providing for a hinged joint between said endoprosthesis of the proximal portion of the femur; said insertion piece having a spherical inner surface which interacts with said spherical surface of the head; a cavity for said insertion piece defined by said inner spherical surface of the insertion piece; the height of said cavity being less than the radius of said head; a nut for fixing said insertion piece in said seat of said endoprosthesis of the acetabulum; said nut having a spherical surface interacting with said head and an external screw thread which cooperates with an internal screw thread of said seat, the nut having a lower end flush with the plane of the lower end of the endoprosthesis of the acetabulum and means for locking said nut.
Applications Claiming Priority (1)
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SU1776053A SU428623A1 (en) | 1972-05-04 | 1972-05-04 | Collapsible artificial hip joint |
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US3875593A true US3875593A (en) | 1975-04-08 |
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DE (1) | DE2319098A1 (en) |
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Cited By (24)
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US4159544A (en) * | 1977-11-28 | 1979-07-03 | Zafmedico Corporation | Hip joint prosthesis |
US4380090A (en) * | 1981-07-24 | 1983-04-19 | Ramos Pedro A | Hip prosthesis |
US4408360A (en) * | 1980-11-06 | 1983-10-11 | Waldemar Link Gmbh & Co. | Vario-head endoprosthesis |
EP0137664A2 (en) * | 1983-08-26 | 1985-04-17 | Pfizer Hospital Products Group, Inc. | Acetabular cup assembly prosthesis |
US4589883A (en) * | 1983-06-06 | 1986-05-20 | Pfizer Hospital Products Group, Inc. | Femoral hip prosthesis |
US4704686A (en) * | 1982-04-10 | 1987-11-03 | Aldinger Guenther | Method of manufacturing of individually formed prothesis or implant |
US4963154A (en) * | 1988-06-06 | 1990-10-16 | Mecron Medizinische Produkte Gmbh | Acetabular cup as part of a hip joint prosthesis |
US5526842A (en) * | 1995-04-25 | 1996-06-18 | Christensen; Layne G. | In-wall retractable vacuum cleaning hose access and storage device |
US5989293A (en) * | 1998-07-17 | 1999-11-23 | Bristol-Myers Squibb Co. | Acetabular cup kit for use during hip replacement surgery |
WO2000007526A1 (en) * | 1998-08-07 | 2000-02-17 | Eska Implants Gmbh & Co. | Ball-and-socket joint for an artificial hip joint |
US20030204266A1 (en) * | 2002-04-25 | 2003-10-30 | Medicinelodge, Inc. | Modular prosthesis for replacing bone and method |
US20030204268A1 (en) * | 2002-04-25 | 2003-10-30 | Medicinelodge, Inc. | Binary attachment mechanism and method for a modular prosthesis |
US20040117024A1 (en) * | 2002-12-13 | 2004-06-17 | Gerbec Daniel E. | Modular implant for joint reconstruction and method of use |
US20040225369A1 (en) * | 2001-07-31 | 2004-11-11 | Lakin Ryan C. | Method and apparatus for use of a metal-metal constrained liner |
US6866683B2 (en) | 2002-12-13 | 2005-03-15 | Medicine Lodge, Inc. | Modular implant for joint reconstruction and method of use |
US6902583B2 (en) | 2002-04-25 | 2005-06-07 | Medicinelodge, Inc. | Tripartite attachment mechanism and method for a modular prosthesis |
US20060217814A1 (en) * | 2002-09-13 | 2006-09-28 | Smith & Nephew, Inc. | Hip prostheses |
US20100145466A1 (en) * | 2008-12-08 | 2010-06-10 | Biomet Manufacturing Corp. | Metal-on-metal modular hybrid liner |
US7857858B2 (en) | 2002-04-25 | 2010-12-28 | Zimmer Technology, Inc. | Modular bone implant, tool, and method |
US20110166665A1 (en) * | 2006-12-07 | 2011-07-07 | Anatol Podolsky | Methods and systems for total hip replacement |
US20120116527A1 (en) * | 2009-04-24 | 2012-05-10 | DePul International Limited | Surgical prostheses |
US8579985B2 (en) | 2006-12-07 | 2013-11-12 | Ihip Surgical, Llc | Method and apparatus for hip replacement |
US8679187B2 (en) | 2006-03-20 | 2014-03-25 | Smith & Nephew, Inc. | Acetabular cup assembly for multiple bearing materials |
US8974540B2 (en) | 2006-12-07 | 2015-03-10 | Ihip Surgical, Llc | Method and apparatus for attachment in a modular hip replacement or fracture fixation device |
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SU545343A1 (en) * | 1974-10-31 | 1977-02-05 | Саратовский Государственный Научно-Исследовательский Институт Травматологии И Ортопедии | Method for producing bone endoprosthesis model |
DD236853A3 (en) * | 1978-03-17 | 1986-06-25 | Med Akad | COMPLETE HIP JOINT ENDOPROTHESIS |
FR2429009A1 (en) * | 1978-06-21 | 1980-01-18 | Roux Christiane | PROSTHESIS FOR ARTICULATION, PARTICULARLY COXO-FEMORAL, ARTIFICIAL |
FR2433336A1 (en) * | 1978-08-18 | 1980-03-14 | Judet Robert | IMPROVEMENT IN JOINT PROSTHESES, ESPECIALLY HIP PROSTHESES |
DE3200340C2 (en) * | 1981-03-04 | 1985-07-04 | Howmedica International, Inc. Zweigniederlassung Kiel, 2300 Kiel | Cup for a hip joint prosthesis |
GB8310675D0 (en) * | 1983-04-20 | 1983-05-25 | Church J C M | Endoprosthetic bone joint devices |
DE3334058C2 (en) * | 1983-09-21 | 1985-07-25 | Ulrich Dr.-Ing. 5600 Wuppertal Witzel | Thigh section for a hip joint prosthesis |
GR852490B (en) * | 1984-10-17 | 1986-02-11 | Sostegni Giuliano | |
DE3535959C1 (en) * | 1985-10-09 | 1987-04-09 | Orthoplant Endoprothetik | Hip joint endoprosthesis cup |
CH671687A5 (en) * | 1987-03-30 | 1989-09-29 | Sulzer Ag | |
EA000760B1 (en) * | 1996-12-31 | 2000-04-24 | Закрытое Акционерное Общество "Алтимед" | Acetabular cup of hip joint endoprosthesis assembly |
IT245363Y1 (en) * | 1998-05-12 | 2002-03-20 | Tian Enrico | ANTI-LUXURY ANKLE PROSTHESIS |
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- 1973-04-13 GB GB1778573A patent/GB1414267A/en not_active Expired
- 1973-04-16 DE DE2319098A patent/DE2319098A1/en active Pending
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Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4159544A (en) * | 1977-11-28 | 1979-07-03 | Zafmedico Corporation | Hip joint prosthesis |
US4408360A (en) * | 1980-11-06 | 1983-10-11 | Waldemar Link Gmbh & Co. | Vario-head endoprosthesis |
US4380090A (en) * | 1981-07-24 | 1983-04-19 | Ramos Pedro A | Hip prosthesis |
US4704686A (en) * | 1982-04-10 | 1987-11-03 | Aldinger Guenther | Method of manufacturing of individually formed prothesis or implant |
US4589883A (en) * | 1983-06-06 | 1986-05-20 | Pfizer Hospital Products Group, Inc. | Femoral hip prosthesis |
EP0137664A2 (en) * | 1983-08-26 | 1985-04-17 | Pfizer Hospital Products Group, Inc. | Acetabular cup assembly prosthesis |
EP0137664A3 (en) * | 1983-08-26 | 1985-11-27 | Pfizer Hospital Products Group, Inc. | Acetabular cup assembly prosthesis |
US4666450A (en) * | 1983-08-26 | 1987-05-19 | Pfizer Hospital Products Group, Inc. | Acetabular cup assembly prosthesis |
US4963154A (en) * | 1988-06-06 | 1990-10-16 | Mecron Medizinische Produkte Gmbh | Acetabular cup as part of a hip joint prosthesis |
US5526842A (en) * | 1995-04-25 | 1996-06-18 | Christensen; Layne G. | In-wall retractable vacuum cleaning hose access and storage device |
US5989293A (en) * | 1998-07-17 | 1999-11-23 | Bristol-Myers Squibb Co. | Acetabular cup kit for use during hip replacement surgery |
WO2000007526A1 (en) * | 1998-08-07 | 2000-02-17 | Eska Implants Gmbh & Co. | Ball-and-socket joint for an artificial hip joint |
US20040225369A1 (en) * | 2001-07-31 | 2004-11-11 | Lakin Ryan C. | Method and apparatus for use of a metal-metal constrained liner |
US7780739B2 (en) | 2001-07-31 | 2010-08-24 | Biomet Manufacturing Corp. | Method and apparatus for use of a metal-metal constrained liner |
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Also Published As
Publication number | Publication date |
---|---|
IT990545B (en) | 1975-07-10 |
GB1414267A (en) | 1975-11-19 |
DE2319098A1 (en) | 1973-11-08 |
FR2183231A1 (en) | 1973-12-14 |
SE7306218L (en) | 1973-11-05 |
SU428623A1 (en) | 1976-07-05 |
CH564342A5 (en) | 1975-07-31 |
FR2183231B1 (en) | 1976-06-11 |
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