US3906552A - Pivot joint adapter - Google Patents

Pivot joint adapter Download PDF

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US3906552A
US3906552A US45804674A US3906552A US 3906552 A US3906552 A US 3906552A US 45804674 A US45804674 A US 45804674A US 3906552 A US3906552 A US 3906552A
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arranged
joint
means
provided
pivot joint
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Expired - Lifetime
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Albert L Weber
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WATKINS LLOYD J
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WATKINS LLOYD J
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/50Prostheses not implantable in the body
    • A61F2/76Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/50Prostheses not implantable in the body
    • A61F2/60Artificial legs or feet or parts thereof
    • A61F2/66Feet; Ankle joints
    • A61F2/6607Ankle joints
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/30Joints
    • A61F2002/30001Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316The 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
    • A61F2002/30329Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30433Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • A61F2002/30434Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws using bolts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2220/00Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0041Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32541Rotatable members resiliently biased to one position
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/32Articulated members
    • Y10T403/32975Rotatable
    • Y10T403/32983Rod in socket
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/68Screw or cam
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T403/00Joints and connections
    • Y10T403/70Interfitted members
    • Y10T403/7041Interfitted members including set screw

Abstract

An adapter for permitting insertion of a pivot joint at the ankle of an artificial leg has a body provided with a protuberant part arranged for attachment to a pivot joint connected to the lower portion of an artificial leg. An aperture provided in a planar base of the body receives an insert that has an opening arranged for engaging a fastener and connecting the adapter body to a foot portion of the artificial leg. In this manner a pivot joint intended for insertion in an artificial leg between, for example, the knee and ankle portions can be arranged in the ankle region of the artificial leg without necessitating modification of the foot portion of the leg.

Description

[ Sept. 23, 1975 PIVOT JOINT ADAPTER Albert L. Weber, Appleton, N.Y.

Lloyd J. Watkins, Lockport, N.Y. a part interest Filed: Apr. 4, 1974 Appl. No.: 458,046

Related US. Application Data Continuation-impart of Ser. No. 284,974, Aug. 30, 1972, Pat. No. 3,842,443.

Inventor:

Assignee:

References Cited UNITED STATES PATENTS 7/1949 Catranis 3/61 X 5/l96l Nayes et al. .403/1 [9 X 6/1961 Newell 403/223 l/l97l Woodall 3/2l FOREIGN PATENTS OR APPLICATIONS l,2l3,026 l0/l959 France 3/30 978,586 12/1964 United Kingdom -3/2l Primary ExaminerRonald L. Frinks Attorney, Agent, or Firm Clarence A. OBrien; Harvey B. Jacobson ABSTRACT An adapter for permitting insertion of a pivot joint at the ankle of an artificial leg has a body provided with a protuberant part arranged for attachment to a pivot joint connected to the lower portion of an artificial leg. An aperture provided in a planar base of the body receives an insert that has an opening arranged for engaging a fastener and connecting the adapter body to a foot portion of the artificial leg. in this manner a pivot joint intended for insertion in an artificial leg between, for example, the knee and ankle portions can be arranged in the ankle region of the artificial leg without necessitating modification of the foot portion of the leg.

7 Claims, 4 Drawing Figures PIVOT JOINT ADAPTER CROSS REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of my application Ser. No. 284,974, filed Aug. 30, 1972 and entitled Pivot Joint which issued as US. Pat. No. 3,842,443, on Oct. 22, 1974.

BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates generally to prosthetic devices, and particularly to a pivot joint adapter for use with an artificial leg, and the like.

2. Description of the Prior Art My application, Ser. No. 284,974, filed Aug. 30, I972, discloses a pivot joint specifically intended for insertion between the knee and ankle regions of conventional artificial limbs. This pivot joint is attached to adjacent sections of the artificial limb in a suitable manner, such as screw threads and/or retaining pins. While such devices are readily attachable to artificial limbs of standard construction, they are not matable to a foot portion of the conventional artificial limbs if it is desired to use such a pivot joint as an ankle joint.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an adapter permitting a pivot joint to be connected to the foot portion of an artificial leg.

It is another object of the present invention to provide an adapter specifically intended for connecting to a foot portion of an artificial leg a pivot joint as disclosed in my copending application Ser. No. 284,974, filed Aug. 30, 1972.

These and other objects are achieved according to the present invention by providing an adapter having a body provided with an arrangement permitting attachment of the body to a pivotjoint, and a further arrangement permitting connection of the body to a foot portion of an artificial leg. The pivot joint itself is connected to a lower portion of the artificial leg.

According to a preferred embodiment of an adapter according to the present invention, the body includes a planar base and a protuberant part extending from the base. A recess provided in the protuberant part permits attachment of the body to a mating pivot joint. The recess is partially defined by a substantially circular wall, and internal screw threads are provided on the wall and arranged for receiving a threaded portion of a pivot joint.

The body further includes an aperture provided in the planar base and arranged substantially equidistant from all portions of the circular wall. An insert is disposed in the aperture and arranged for receiving a fastener which attaches the insert, and therefore the body of the adapter, to the foot portion of an artificial limb.

A preferred insert according to the present invention has a shank arranged for mating with the aperture, a flange attached to the shank and arranged for abutting the planar base in the manner of a shoulder, and an opening provided in the shank and arranged passing therethrough. The opening may be provided with internal screw threads arranged for threadingly engaging the screw threads of a bolt passing through the associated foot portion to which the adapter is attached.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawings forming a part hereof, wherein like numerals refer to like parts throughout.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partly schematic, perspective view showing an adapter according to the present inventon connecting a pivot joint to the foot portion of an artificial leg.

FIG. 2 is a fragmentary, sectional view taken generally along the line 22 of FIG. 1.

FIG. 3 is a sectional view, with some parts removed, taken generally along the line 33 of FIG. 2.

FIG. 4 is an exploded, perspective view showing an adapter according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now more particularly to FIG. 1 of the drawings, an ankle joint 10 for an artificial leg has a pivot joint 12 connectable to a lower leg portion 14 of the artificial leg, and an adapter 16 according to the present invention attached to pivot joint 12 and connectable to a foot portion 18 of the artificial leg. In this manner, pivot joint 12 is connected to foot portion I8 by adapter I6 without necessitating modification of foot portion 18.

Referring now to FIGS. 2 and 3 of the drawings, pivot joint 12 is constructed from first and second joint seg ments 20 and 22 connected together for pivotal movement relative to one another about a pivot axis A-A as by a bolt 24 passing through bores 26 and 28 provided in segments 20 and 22, and a nut 30 threaded onto bolt 24. A sleeve 32 constructed from a suitable, known bearing material may be inserted into bores 26 and 28, with only bore 28 being shown as so provided. Suitable, conventional thrust bearings 34 and 35 may be arranged between segments 20 and 22 and in the recess of segment 22 communicating with adapter 16 to facilitate the pivotal movement ofjoint 12. A recess 36 is advantageously provided in at least one of segments 20, 22, segment 22 being so provided in FIG. 2, for receiving bearing 34, with bearing 34 being arranged in recess 36. A resilient sleeve 38 is arranged around segments 20, 22 for restoring same to a predetermined relationship with respect to one another following the application of a torsional force to the segments. Conventional clamps 40 and 42 including respective bands 44 and 46 are arranged about sleeve 38 for clamping same to segments 20 and 22, respectively. The torque exerted by sleeve 38 may be decreased by moving clamps 40, 42 further apart, and increased by arranging them closer together. This adjustment can be useful for pro viding a different degree of torque for persons of, for example, different weights.

Although a pivot joint 12 has been found especially suitable for use with an adapter 16 according to the present invention, it is to be understood that other suitable pivot joints may be similarly employed. Accordingly, the pivot joints disclosed in my copending application Ser. No. 284,974, filed Aug. 30, 1972, are incorporated herein, and it is to be understood that these other pivot joints may be suitably used with an adapter according to the present invention. For example, apertures could be provided in the adapter for receiving a retaining pin passing transversely through the associated pivot joint segment.

Pivot joint 12 is specifically provided with threaded portions 48 and 50 for attachment to portions 14 and 18, respectively. Threaded portion 48 is threaded into the internal screw threads of a hollowed-out section 52 of segment 20, while portion 50 is connected to adapter 16 in a manner to be described below.

Adapter 16 has a body 54 including a planar, elongated base 56 and a protuberant part 58 in the form of a boss extending from base 56. Although an elongated base 56 is illustrated in FIGS. 1 and 4 of the drawings. it is to be understood that the base may take other con figurations as desired. A recess 60 is provided in protuberant part 58, and is partially defined by a substantially circular wall 62 having internal screw threads arranged for receiving a threaded portion 50 of pivot joint 12. An aperture 64 is provided in base 56, which cooperates with wall 62 to define recess 60, and is arranged substantially equidistant from all portions of wall 62. An insert 66 is disposed in aperture 64 for a purpose which will be made clear below.

lnsert 66 includes a shank 68 arranged for mating with aperture 64. A flange 70 is attached to shank 68, and is arranged for abutting the recess forming surface of base 56 in the manner of a shoulder for limiting movement of insert 66 in aperture 64. An opening 72, furnished with internal screw threads, is provided in shank 68 and arranged passing therethrough so as to pass from recess 60 through base 58. A conventional fastener such as bolt 72 may be arranged with the screw threads thereof threadingly engaging the threads of opening 72 for connecting insert 66, and therefore adapter body 54, to foot portion 18 by passing the shank of bolt 74 through a hole 66 conventionally provided extending through portion 18 from a counterbore 78 thereof. A nut 80 may be threaded onto the end threads of bolt 74 if desired to provide additional strength and rigidity of the connection.

A plurality of threaded bores 82 may be provided in the cylindrical boss formed by protuberant part 58. These bores 82 are arranged radially to wall 62 and parallel to base 56 for receiving setscrews 84, and the like, and clamping a portion ofa pivot joint segment received in a socket-forming recess equivalent to recess 60. In this manner, the segment portion received in the recess may be clamped in place, either solely by the setscrews 84 or in addition to the illustrated screw threads on the segment portion and wall 62.

Although it is to be understood that any suitable, known materials may be used to construct the various elements described above, a high grade aluminum has been found satisfactory for adapter body 54, while a steel may be used for insert 66. In this manner article weight and fabrication costs can be minimized while achieving the requisite strength and rigidity of the resulting structure. A block 86 constructed from, for example, a suitable synthetic such as a phenolic, is advantageously attached to the lower end of portion 14 for facilitating attachment of threaded portion 48 to the leg portion.

Alternatively to the attachment of an adapter according to the present invention to an associated segment of a pivot joint, other suitable attachment techniques such as a tapered screw thread provided joint segment and cooperating jamnut or a transversely extending pin passing through the joint segment, as set out in my aforementioned copending application incorporated herein by reference. may be employed. In the former alternative. either the adapter itself would form a jamnut. or a jamnut would be fitted within the socketforming recess of the adapter body, while in the latter alternative. diagonally opposed holes parallel to the planar base would be formed in protuberant part 58.

As can be appreciated from the above description and from the drawings, an adapter according to the present invention permits a pivot joint intended for insertion into an artificial leg to be connected to the foot portion of the artificial leg quickly and easily without modification of the foot portion.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.

What is claimed as new is as follows:

1. An adapter for permitting attachment of a pivot joint to the foot portion of an artificial leg, comprising a body provided with means for attaching the body to a pivot joint, and with means for connecting the body to a foot portion of an artificial leg, the body including a planar base and a protuberant part extending from the base, and the means for attaching including a recess provided in the protuberant part and partially defined by a substantially circular wall, and internal screw threads provided on the wall and arranged for receiving a threaded portion of a pivot joint, and the body further including an aperture provided in the base and arranged substantially equidistant from all portions of the circular wall, and the means for connecting including an insert disposed in the aperture, the insert including a shank arranged for mating with the aperture. 21 flange attached to the shank and arranged for abutting the base in the manner of a shoulder, the shank arranged for abutting the foot portion, and an opening provided in the shank and arranged passing therethrough, retaining means including internal screw threads for threadingly engaging with the screw threads of a bolt arranged passing through the foot portion and securing the foot portion to the adaptor.

2. A structure as defined in claim 1, wherein the protuberant part is a cylindrical boss, and the means for attaching further includes bores having internal screw threads provided in the boss and arranged radially to the circular wall and parallel to the base for receiving setscrews that clamp a portion of a pivot joint received in the recess.

3. A structure as defined in claim 2, wherein the base is elongated.

4. An ankle joint for an artificial leg. comprising, in combination:

a. a pivot joint connectable to a lower leg portion of an artificial leg; and

b. an adapter attached to the pivot joint and connectable to a foot portion of the artificial leg, whereby the pivot joint is connected to the foot portion; wherein c. the pivot joint includes:

i. first and second joint segments;

ii. means connecting the first and second joint segments together for pivotal movement relative to one another about a pivot axis;

iii. a bearing member;

iv. a recess provided in one of the first and second joint members and arranged for receiving the bearing member, the bearing member being arranged in the recess;

v. resilient means including a sleeve arranged around the first and second joint segments for restoring same to a predetermined relationship with respect to one another following the application of a torsional force to the segments; and

vi. means for attaching the first and second joint segments to the lower leg portion and foot portion. respectively; and

d. the adapter includes a body provided with means for attaching the body to a pivot joint, and with means for connecting the body to a foot portion of an artificial leg, the body including a planar base and a protuberant part extending from the base, and the means for attaching including a recess provided in the protubcrant part and partially defined by a substantially circular wall, and internal screw threads provided on the wall and arranged for receiving a threaded portion of a pivotjoint, the body further including an aperture provided in the base and arranged substantially equidistant from all portions of the circular wall, and the means for connecting including an insert disposed in the aperture. the insert including a shank arranged for mating with the aperture, a flange attached to the shank and arranged for abutting the base in the manner of a shoulder, and an opening provided in the shank and arranged passing therethrough, the

opening provided with internal screw threads, a

bolt arranged passing through the foot portion, and

the internal screw threads of the opening arranged for threadingly engaging with the screw threads of the bolt. 5. A structure as defined in claim 4, wherein the protuberant part is a cylindrical boss, and the means for attaching further includes bores having internal screw threads provided in the boss and arranged radially to the circular wall and parallel to the base for receiving setscrews that clamp a portion of a pivot joint received in the recess.

6. A structure as defined in claim 4, wherein the base is elongated.

7. A pivot joint for an artificial leg, comprising, in

combination:

a. first and second joint segments;

b. means connecting the first and second joint seg ments together for pivotal movement relative to one another about a pivot axis;

c. a bearing member;

(1. a recess provided in one of the first and second joint members and arranged for receiving the bearing member, the bearing member being arranged in the recess;

6. resilient means including a sleeve arranged around the first and second joint segments for restoring same to a predetermined relationship with respect to one another following the application of a torsional force to the segments; and

f. means for attaching the first and second joint segments to portions of a member to be pivotally connected together. the means for pivotal movement including a bolt arranged passing through coaxial bores provided in the first and second joint segments and engaging a nut threaded onto the bolt, a sleeve constructed from a bearing material and inserted into the bore of one of the joint segments. and a further bearing being arranged between the nut and surface of the joint segment arranged adjacent the nut.

Claims (7)

1. An adapter for permitting attachment of a pivot joint to the foot portion of an artificial leg, comprising a body provided with means for attaching the body to a pivot joint, and with means for connecting the body to a foot portion of an artificial leg, the body including a planar base and a protuberant part extending from the base, and the means for attaching including a recess provided in the protuberant part and partially defined by a substantially circular wall, and internal screw threads provided on the wall and arranged for receiving a threaded portion of a pivot joint, and the body further including an aperture provided in the base and arranged substantially equidistant from all portions of the circular wall, and the means for connecting including an insert disposed in the aperture, the insert including a shank arranged for mating with the aperture, a flange attached to the shank and arranged for abutting the base in the manner of a shoulder, the shank arranged for abutting the foot portion, and an opening provided in the shank and arranged passing therethrough, retaining means including internal screw threads for threadingly engaging with the screw threads of a bolt arranged passing through the foot portion and securing the foot portion to the adaptor.
2. A structure as defined in claim 1, wherein the protuberant part is a cylindrical boss, and the means for attaching further includes bores having internal screw threads provided in the boss and arranged radially to the circular wall and parallel to the base for receiving setscrews that clamp a portion of a pivot joint received in the recess.
3. A structure as defined in claim 2, wherein the base is elongated.
4. An ankle joint for an artificial leg, comprising, in combination: a. a pivot joint connectable to a lower leg portion of an artificial leg; and b. an adapter attached to the pivot joint and connectable to a foot portion of the artificial leg, whereby the pivot joint is connected to the foot portion; wherein c. the pivot joint includes: i. first and second joint segments; ii. means connecting the first and second joint segments together for pivotal movement relative to one another about a pivot axis; iii. a bearing member; iv. a recess provided in one of the first and second joint members and arranged for receiving the bearing member, the bearing member being arranged in the recess; v. resilient means including a sleeve arranged around the first and second joint segments for restoring same to a predetermined relationship with respect to one another following the application of a torsional force to the segments; and vi. means for attaching the first and second joint segments to the lower leg portion and foot portion, respectively; and d. the adapter includes a body provided with means for attaching the body to a pivot joint, and with means for connecting the body to a foot portion of an artificial leg, the body including a planar base and a protuberant part extending from the base, and the means for attaching including a recess provided in the protuberant part and partially defined by a substantially circular wall, and internal screw threads provided on the wall and arranged for receiving a threaded portion of a pivot joint, the body further including an aperture provided in the base and arranged substantially equidistant from all portions of the circular wall, and the means for connecting includinG an insert disposed in the aperture, the insert including a shank arranged for mating with the aperture, a flange attached to the shank and arranged for abutting the base in the manner of a shoulder, and an opening provided in the shank and arranged passing therethrough, the opening provided with internal screw threads, a bolt arranged passing through the foot portion, and the internal screw threads of the opening arranged for threadingly engaging with the screw threads of the bolt.
5. A structure as defined in claim 4, wherein the protuberant part is a cylindrical boss, and the means for attaching further includes bores having internal screw threads provided in the boss and arranged radially to the circular wall and parallel to the base for receiving setscrews that clamp a portion of a pivot joint received in the recess.
6. A structure as defined in claim 4, wherein the base is elongated.
7. A pivot joint for an artificial leg, comprising, in combination: a. first and second joint segments; b. means connecting the first and second joint segments together for pivotal movement relative to one another about a pivot axis; c. a bearing member; d. a recess provided in one of the first and second joint members and arranged for receiving the bearing member, the bearing member being arranged in the recess; e. resilient means including a sleeve arranged around the first and second joint segments for restoring same to a predetermined relationship with respect to one another following the application of a torsional force to the segments; and f. means for attaching the first and second joint segments to portions of a member to be pivotally connected together, the means for pivotal movement including a bolt arranged passing through coaxial bores provided in the first and second joint segments and engaging a nut threaded onto the bolt, a sleeve constructed from a bearing material and inserted into the bore of one of the joint segments, and a further bearing being arranged between the nut and surface of the joint segment arranged adjacent the nut.
US3906552A 1972-08-30 1974-04-04 Pivot joint adapter Expired - Lifetime US3906552A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US3842443A US3842443A (en) 1972-08-30 1972-08-30 Resilient pivot joint for an artificial leg
US3906552A US3906552A (en) 1972-08-30 1974-04-04 Pivot joint adapter

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Cited By (39)

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US4038705A (en) * 1976-07-30 1977-08-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Rotational joint assembly for the prosthetic leg
US4149280A (en) * 1977-06-09 1979-04-17 Wilson Michael T Structure of a stabilized artificial limb
US4186449A (en) * 1977-04-04 1980-02-05 Otto Bock Orthopadische Industrie Kg Swivel joint
US4431172A (en) * 1980-08-06 1984-02-14 Agency Of Industrial Science & Technology Device for absorbing punching shock in a press
US4523338A (en) * 1981-06-09 1985-06-18 J. E. Hanger & Company Limited Demountable joint
US4728220A (en) * 1986-08-08 1988-03-01 Navarro Bernard J Joint for rails
US5888232A (en) * 1994-11-29 1999-03-30 Taylor; Douglas A. Ultralight modular quick-adjusting connector
US6120547A (en) * 1998-11-06 2000-09-19 Roland J. Christensen Enhanced prosthetic foot structure with ankle reinforcement
US6302918B1 (en) * 1977-05-30 2001-10-16 Gramtec Innovation Ab Shock-and torque absorber in a leg prothesis
US6374057B1 (en) * 1999-08-31 2002-04-16 Asahi Kogaku Kogyo Kabushiki Kaisha Data imprinting system for camera
US6478826B1 (en) 1998-04-10 2002-11-12 Van L. Phillips Shock module prosthesis
US6511512B2 (en) 1998-04-10 2003-01-28 Ossur Hf Active shock module prosthesis
US6663673B2 (en) 2000-06-30 2003-12-16 Roland J. Christensen Prosthetic foot with energy transfer medium including variable viscosity fluid
US20040068326A1 (en) * 2002-10-08 2004-04-08 Christensen Roland J. Prosthetic foot with oblique attachment
US20040068327A1 (en) * 2002-10-08 2004-04-08 Christensen Roland J. Prosthetic foot with a resilient ankle
US6805717B2 (en) 2002-10-08 2004-10-19 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Manager Of The Roland J. Christensen Family Limited Partnership Energy-storing prosthetic foot with elongated forefoot
US20050033450A1 (en) * 2002-10-08 2005-02-10 Christensen Roland J. Prosthetic foot with a resilient ankle
US20050071017A1 (en) * 2003-09-30 2005-03-31 Lecomte Christophe Guy Low profile active shock module prosthesis
US6875241B2 (en) 2000-06-30 2005-04-05 Roland J. Christensen, As Operating Manager Of Rjc Development Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Variable resistance cell
US20050085926A1 (en) * 2003-10-21 2005-04-21 General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with an adjustable ankle and method
US20050171617A1 (en) * 2004-02-02 2005-08-04 Curtis Michael J. Limb with modular prosthetic components
US20050187640A1 (en) * 2004-02-20 2005-08-25 Roland J. Christensen Prosthetic foot with cam
US20050203640A1 (en) * 2002-10-08 2005-09-15 Christensen Roland J. Prosthetic foot with a resilient ankle
US20060293108A1 (en) * 2005-06-17 2006-12-28 Sun Prein Co., Ltd. Solid prop rod of folding type seat
US7341603B2 (en) 2000-06-30 2008-03-11 Applied Composite Technology, Inc. Prosthetic foot with energy transfer including variable orifice
WO2008034099A2 (en) * 2006-09-15 2008-03-20 össur hf Method and apparatus for decreasing build height of prosthetic products
US7462201B2 (en) 2003-10-21 2008-12-09 Freedom Innovations, Llc Prosthetic foot with an adjustable ankle and method
US7520904B2 (en) 2003-10-21 2009-04-21 Freedom Innovations, Llc Prosthetic foot with an adjustable ankle and method
US7572299B2 (en) 2000-06-30 2009-08-11 Freedom Innovations, Llc Prosthetic foot with energy transfer
US7618464B2 (en) 2006-08-03 2009-11-17 Freedom Innovations, Llc Prosthetic foot with variable medial/lateral stiffness
US20100021096A1 (en) * 2008-07-25 2010-01-28 Airbus Operations Gmbh Device For Rotatably Bearing An Aircraft Interior Fitting Component
US7686848B2 (en) 2000-06-30 2010-03-30 Freedom Innovations, Llc Prosthetic foot with energy transfer
US7727285B2 (en) 2007-01-30 2010-06-01 Freedom Innovations, Llc Prosthetic foot with variable medial/lateral stiffness
US7794506B2 (en) 2007-09-18 2010-09-14 Freedom Innovations, Llc Multi-axial prosthetic ankle
US7824446B2 (en) 2006-12-06 2010-11-02 Freedom Innovations, Llc Prosthetic foot with longer upper forefoot and shorter lower forefoot
US20110112657A1 (en) * 2009-11-12 2011-05-12 Haun Dennis G Pyramid receptacle for coupling a prosthetic limb to a socket
US20110144756A1 (en) * 2009-10-10 2011-06-16 Bickley Barry T Method and apparatus for restoring a joint, including the provision and use of a longitudinally-adjustable and rotationally-adjustable joint prosthesis
US8034121B2 (en) 2008-04-18 2011-10-11 Freedom Innovations, Llc Prosthetic foot with two leaf-springs joined at heel and toe
US8500825B2 (en) 2010-06-29 2013-08-06 Freedom Innovations, Llc Prosthetic foot with floating forefoot keel

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US2475372A (en) * 1947-12-11 1949-07-05 John G Catranis Artificial foot(two-link)
US2981970A (en) * 1957-07-29 1961-05-02 Milwaukee Stamping Company Double acting spring hinge
US2988388A (en) * 1959-12-23 1961-06-13 Westinghouse Air Brake Co Articulated brake cylinder push rod
US3551915A (en) * 1968-02-05 1971-01-05 Carl Woodall Artificial limb having adjustable parts

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US4038705A (en) * 1976-07-30 1977-08-02 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Rotational joint assembly for the prosthetic leg
US4186449A (en) * 1977-04-04 1980-02-05 Otto Bock Orthopadische Industrie Kg Swivel joint
US6302918B1 (en) * 1977-05-30 2001-10-16 Gramtec Innovation Ab Shock-and torque absorber in a leg prothesis
US4149280A (en) * 1977-06-09 1979-04-17 Wilson Michael T Structure of a stabilized artificial limb
US4431172A (en) * 1980-08-06 1984-02-14 Agency Of Industrial Science & Technology Device for absorbing punching shock in a press
US4523338A (en) * 1981-06-09 1985-06-18 J. E. Hanger & Company Limited Demountable joint
US4728220A (en) * 1986-08-08 1988-03-01 Navarro Bernard J Joint for rails
US5888232A (en) * 1994-11-29 1999-03-30 Taylor; Douglas A. Ultralight modular quick-adjusting connector
US20050209707A1 (en) * 1998-04-10 2005-09-22 Phillips Van L Active shock module prosthesis
US7169190B2 (en) 1998-04-10 2007-01-30 Van L. Phillips Active shock module prosthesis
US6478826B1 (en) 1998-04-10 2002-11-12 Van L. Phillips Shock module prosthesis
US6511512B2 (en) 1998-04-10 2003-01-28 Ossur Hf Active shock module prosthesis
US20040068325A1 (en) * 1998-04-10 2004-04-08 Phillips Van L. Shock module prosthesis
US6887279B2 (en) 1998-04-10 2005-05-03 össur hf Active shock module prosthesis
US6120547A (en) * 1998-11-06 2000-09-19 Roland J. Christensen Enhanced prosthetic foot structure with ankle reinforcement
US6374057B1 (en) * 1999-08-31 2002-04-16 Asahi Kogaku Kogyo Kabushiki Kaisha Data imprinting system for camera
US7341603B2 (en) 2000-06-30 2008-03-11 Applied Composite Technology, Inc. Prosthetic foot with energy transfer including variable orifice
US6663673B2 (en) 2000-06-30 2003-12-16 Roland J. Christensen Prosthetic foot with energy transfer medium including variable viscosity fluid
US20040133284A1 (en) * 2000-06-30 2004-07-08 Christensen Roland J. Prosthetic foot with energy transfer medium including variable viscosity fluid
US7572299B2 (en) 2000-06-30 2009-08-11 Freedom Innovations, Llc Prosthetic foot with energy transfer
US6875241B2 (en) 2000-06-30 2005-04-05 Roland J. Christensen, As Operating Manager Of Rjc Development Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Variable resistance cell
US6875242B2 (en) 2000-06-30 2005-04-05 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with energy transfer medium including variable viscosity fluid
US7686848B2 (en) 2000-06-30 2010-03-30 Freedom Innovations, Llc Prosthetic foot with energy transfer
US6805717B2 (en) 2002-10-08 2004-10-19 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Manager Of The Roland J. Christensen Family Limited Partnership Energy-storing prosthetic foot with elongated forefoot
US6911052B2 (en) 2002-10-08 2005-06-28 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with oblique attachment
US20050033450A1 (en) * 2002-10-08 2005-02-10 Christensen Roland J. Prosthetic foot with a resilient ankle
US6929665B2 (en) 2002-10-08 2005-08-16 Roland J. Christensen Prosthetic foot with a resilient ankle
US7419509B2 (en) 2002-10-08 2008-09-02 Freedom Innovations, Llc Prosthetic foot with a resilient ankle
US20040068327A1 (en) * 2002-10-08 2004-04-08 Christensen Roland J. Prosthetic foot with a resilient ankle
US20050203640A1 (en) * 2002-10-08 2005-09-15 Christensen Roland J. Prosthetic foot with a resilient ankle
US20040068326A1 (en) * 2002-10-08 2004-04-08 Christensen Roland J. Prosthetic foot with oblique attachment
US7371262B2 (en) 2003-09-30 2008-05-13 össur hf Low profile active shock module prosthesis
US20050071017A1 (en) * 2003-09-30 2005-03-31 Lecomte Christophe Guy Low profile active shock module prosthesis
US20060004467A1 (en) * 2003-09-30 2006-01-05 Lecomte Christophe G Low profile active shock module prosthesis
US6969408B2 (en) 2003-09-30 2005-11-29 Ossur Engineering, Inc. Low profile active shock module prosthesis
US20050085926A1 (en) * 2003-10-21 2005-04-21 General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with an adjustable ankle and method
US7462201B2 (en) 2003-10-21 2008-12-09 Freedom Innovations, Llc Prosthetic foot with an adjustable ankle and method
US6966933B2 (en) 2003-10-21 2005-11-22 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with an adjustable ankle and method
US7520904B2 (en) 2003-10-21 2009-04-21 Freedom Innovations, Llc Prosthetic foot with an adjustable ankle and method
WO2005074523A2 (en) * 2004-02-02 2005-08-18 Curtis Michael J Limb with modular prosthetic components
US20050171617A1 (en) * 2004-02-02 2005-08-04 Curtis Michael J. Limb with modular prosthetic components
WO2005074523A3 (en) * 2004-02-02 2005-12-29 Michael J Curtis Limb with modular prosthetic components
US7189264B2 (en) * 2004-02-02 2007-03-13 American Prosthetic Components, Inc. Limb with modular prosthetic components
US20050187640A1 (en) * 2004-02-20 2005-08-25 Roland J. Christensen Prosthetic foot with cam
US7172630B2 (en) 2004-02-20 2007-02-06 Roland J. Christensen, As Operating Manager Of Rjc Development, Lc, General Partner Of The Roland J. Christensen Family Limited Partnership Prosthetic foot with cam
US20060293108A1 (en) * 2005-06-17 2006-12-28 Sun Prein Co., Ltd. Solid prop rod of folding type seat
US7618464B2 (en) 2006-08-03 2009-11-17 Freedom Innovations, Llc Prosthetic foot with variable medial/lateral stiffness
US20110093090A1 (en) * 2006-09-15 2011-04-21 Ossur Hf Method and apparatus for decreasing build height of prosthetic products
US8992630B2 (en) 2006-09-15 2015-03-31 össur hf Method and apparatus for decreasing build height of prosthetic products
WO2008034099A3 (en) * 2006-09-15 2008-05-22 Oessur Hf Method and apparatus for decreasing build height of prosthetic products
WO2008034099A2 (en) * 2006-09-15 2008-03-20 össur hf Method and apparatus for decreasing build height of prosthetic products
US8192503B2 (en) 2006-09-15 2012-06-05 össur hf Method and apparatus for decreasing build height of prosthetic products
US7824446B2 (en) 2006-12-06 2010-11-02 Freedom Innovations, Llc Prosthetic foot with longer upper forefoot and shorter lower forefoot
US7727285B2 (en) 2007-01-30 2010-06-01 Freedom Innovations, Llc Prosthetic foot with variable medial/lateral stiffness
US7794506B2 (en) 2007-09-18 2010-09-14 Freedom Innovations, Llc Multi-axial prosthetic ankle
US8034121B2 (en) 2008-04-18 2011-10-11 Freedom Innovations, Llc Prosthetic foot with two leaf-springs joined at heel and toe
US20100021096A1 (en) * 2008-07-25 2010-01-28 Airbus Operations Gmbh Device For Rotatably Bearing An Aircraft Interior Fitting Component
US8439589B2 (en) * 2008-07-25 2013-05-14 Airbus Operations Gmbh Device for rotatably bearing an aircraft interior fitting component
US20110144756A1 (en) * 2009-10-10 2011-06-16 Bickley Barry T Method and apparatus for restoring a joint, including the provision and use of a longitudinally-adjustable and rotationally-adjustable joint prosthesis
US8623092B2 (en) * 2009-10-10 2014-01-07 Simplicity Orthopedics, Inc. Method and apparatus for restoring a joint, including the provision and use of a longitudinally-adjustable and rotationally-adjustable joint prosthesis
US20140324185A1 (en) * 2009-10-10 2014-10-30 Simplicity Orthopedics, Inc. Method and apparatus for restoring a joint, including the provision and use of a longitudinally-adjustable and rotationally-adjustable joint prosthesis
US9474618B2 (en) * 2009-10-10 2016-10-25 Simplicity Orthopedics, Inc. Method and apparatus for restoring a joint, including the provision and use of a longitudinally-adjustable and rotationally-adjustable joint prosthesis
US20110112657A1 (en) * 2009-11-12 2011-05-12 Haun Dennis G Pyramid receptacle for coupling a prosthetic limb to a socket
US8252066B2 (en) * 2009-11-12 2012-08-28 Haun Dennis G Pyramid receptacle for coupling a prosthetic limb to a socket
US8500825B2 (en) 2010-06-29 2013-08-06 Freedom Innovations, Llc Prosthetic foot with floating forefoot keel

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