US5314479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modular prosthesis
Assignee: DePuy Orthopaedics Inc
•
Filing: 1991-11-18
•
Granted: 1994-05-24
•
Expires: 2011-11-18
Abstract
Abstract A modular shoulder prosthesis for the replacement of a portion of the humerus is provided. The prosthesis is assembled from a kit that includes a stem sized to be received in the humerus, a body sized to replace a portion of the humerus, the body being attachable to the stem, and a head member sized to replace the head of the humerus, the head member being eccentrically attachable to the body. A collar is inserted between the head member and the body to help stabilize the assembled prosthesis.
Inventors
- 👤 Charles A. Rockwood, Jr.
- 👤 John A. Engelhardt
- 👤 Jeffrey M. Ondrla
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:50
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/40; A61B; A61B90/00; A61B90/03; A61B2090/031; A61B2090/037; A61F2/30767; A61F2/30907; A61F2/32; A61F2/36; A61F2/3609; A61F2/3662; A61F2/3672; A61F2002/30001; A61F2002/30108; A61F2002/3011; A61F2002/30112; A61F2002/30113; A61F2002/30138; A61F2002/30143; A61F2002/30199; A61F2002/302; A61F2002/30224; A61F2002/30316; A61F2002/30329; A61F2002/30331; A61F2002/30332; A61F2002/30362; A61F2002/30364; A61F2002/30367; A61F2002/30405; A61F2002/30535; A61F2002/30537; A61F2002/30538; A61F2002/3054; A61F2002/30558; A61F2002/30561; A61F2002/30604; A61F2002/30616; A61F2/30721; A61F2/30728; A61F2002/30729; A61F2/30771; A61F2002/30795; A61F2002/30813; A61F2002/3082; A61F2002/30822; A61F2002/30827; A61F2002/30878; A61F2002/30884; A61F2002/30899; A61F2002/30902; A61F2002/3674; A61F2/4014; A61F2002/4018; A61F2002/4051; A61F2/4059; A61F2002/4062; A61F2002/407; A61F2220/00; A61F2220/0025; A61F2220/0033; A61F2230/00; A61F2230/0002; A61F2230/0004; A61F2230/0006; A61F2230/0017; A61F2230/0063; A61F2230/0065; A61F2230/0069; A61F2250/00; A61F2250/0058; A61F2250/0073; A61F2250/0074; A61F2310/00; A61F2310/00389; A61F2310/00395
Claims Analysis
Total Claims: 53
Claim 1
Independent Claim
109 words
A kit for the assembly of a modular shoulder prosthesis for the replacement of a head, neck, and adjacent portions of a humerus, the kit comprising at least two stems, with each stem sized for insertion into the humerus, at least two bodies, with each body sized to replace a portion of the humerus, and with each body configured to receive in fixed attachment one of the at least two stems, at least two head members, with each head member sized to replace the head of the humerus, and means for fixedly attaching one of the at least two head members to one of the at least two bodies.
Claim 2
Dependent Claim
109 words
A kit for the assembly of a modular shoulder prosthesis for the replacement of a head, neck, and adjacent portions of a humerus, the kit comprising at least two stems, with each stem sized for insertion into the humerus, at least two bodies, with each body sized to replace a portion of the humerus, and with each body configured to receive in fixed attachment one of the at least two stems, at least two head members, with each head member sized to replace the head of the humerus, and means for fixedly attaching one of the at least two head members to one of the at least two bodies.
Claim 3
Dependent Claim
47 words
The kit of claim 1 further comprising at least two collars, with each collar configured for positioning between one of the at least two bodies and one of the at least two head members so that the collar can increase stability of the assembled modular shoulder prosthesis.
Claim 4
Dependent Claim
53 words
The kit of claim 1, wherein at least one of the stems is attached to at least one of the bodies with external threads defined on the at least one stem and internal threads defined in a bore in the at least one body for threaded engagement of the stem and the body.
Claim 5
Dependent Claim
56 words
The kit of claim 3, wherein at least one of the stems further comprises frangible means for limiting torque application to the stem, the frangible means configured to break and prevent further tightening of the stem upon application of a predetermined amount of torque acting to tighten the threaded engagement of the stem and the body.
Claim 6
Dependent Claim
72 words
The kit of claim 1, wherein means for fixedly attaching one of the at least two head members to one of the at least two bodies further comprises a lock finger attached to one of the at least two head members, the lock finger being formed to define a lock element having a non-circular cross section to prevent rotation of the lock finger relative to the one of at least two bodies.
Claim 7
Dependent Claim
22 words
The kit of claim 5, wherein the lock finger attached to one of the at least two head members is centrally attached.
Claim 8
Dependent Claim
22 words
The kit of claim 5, wherein the lock finger attached to one of the at least two head members is eccentrically attached.
Claim 9
Dependent Claim
93 words
An implant apparatus for replacing a portion of a humerus, the implant comprising a body formed to define a first and second bore therein, a stem having an upper portion and a lower portion, the lower portion being sized to be received in a shaft of a humerus and the upper portion configured to fit in the first bore of the body, and a head member sized to replace a head portion of the humerus, the head member having an attached lock finger configured to fit in the second bore of the body.
Claim 10
Dependent Claim
93 words
An implant apparatus for replacing a portion of a humerus, the implant comprising a body formed to define a first and second bore therein, a stem having an upper portion and a lower portion, the lower portion being sized to be received in a shaft of a humerus and the upper portion configured to fit in the first bore of the body, and a head member sized to replace a head portion of the humerus, the head member having an attached lock finger configured to fit in the second bore of the body.
Claim 11
Dependent Claim
17 words
The implant apparatus of claim 8, wherein the lock finger is eccentrically attached to the head member.
Claim 12
Dependent Claim
60 words
The implant apparatus of claim 9, wherein the second bore of the body is formed to define a locking socket having a hexagonal cross section and the lock finger further comprises a hexagonal lock element configured to fit in the locking socket so that the head member can be positioned relative to the body in one of six possible orientations.
Claim 13
Dependent Claim
29 words
The implant apparatus of claim 8 further comprising a collar positioned between the head member and the body to stabilize the position of the body relative to a humerus.
Claim 14
Dependent Claim
25 words
The implant apparatus of claim 11, wherein the collar is formed to define an central opening sized to permit passage therethrough of the lock finger.
Claim 15
Dependent Claim
27 words
The implant apparatus of claim 8, wherein the stem is configured to present a bone ingrowth surface to facilitate long-term attachment of the stem to the humerus.
Claim 16
Dependent Claim
52 words
The implant apparatus of claim 13, wherein the first bore is formed to define internal threads and wherein the stem further comprises external threads defined on the upper portion of the stem, the external threads being dimensioned to match the internal threads to permit threaded engagement of the stem and the body.
Claim 17
Dependent Claim
52 words
The apparatus of claim 14, wherein the stem further comprises frangible means for limiting torque application to the stem, the frangible means configured to break and prevent further tightening of the stem upon application of a predetermined amount of torque acting to tighten the threaded engagement of the stem and the body.
Claim 18
Dependent Claim
56 words
An implant apparatus for replacing a portion of a humerus, the implant comprising a body formed to define a bore therein, a head member sized to replace a head portion of the humerus, means for eccentric attachment of the head member to the body to allow adjustable positioning of the head member relative to the body.
Claim 19
Dependent Claim
56 words
An implant apparatus for replacing a portion of a humerus, the implant comprising a body formed to define a bore therein, a head member sized to replace a head portion of the humerus, means for eccentric attachment of the head member to the body to allow adjustable positioning of the head member relative to the body.
Claim 20
Dependent Claim
22 words
The implant apparatus of claim 16, wherein the eccentric attachment means further comprises a lock finger eccentrically attached to the head member.
Claim 21
Dependent Claim
41 words
The implant apparatus of claim 17, wherein the bore of the body is formed to define a locking socket having a non-circular cross section and the lock finger further comprises a lock element configured to lockingly fit in the locking socket.
Claim 22
Dependent Claim
54 words
The implant apparatus of claim 18, wherein the locking socket has a hexagonal cross section and the lock element of the lock finger further comprises a hexagonal lock element sized to fit in the locking socket so that the head member can be positioned relative to the body in one of six possible orientations.
Claim 23
Dependent Claim
116 words
A kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, and means for fixedly attaching one of the at least two head members to one of the at least two bodies.
Claim 24
Dependent Claim
116 words
A kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, and means for fixedly attaching one of the at least two head members to one of the at least two bodies.
Claim 25
Dependent Claim
47 words
The kit of claim 20 further comprising at least two collars, with each collar configured for positioning between one of the at least two bodies and one of the at least two head members so that the collar can increase stability of the assembled modular joint prosthesis.
Claim 26
Dependent Claim
164 words
A kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, means for fixedly attaching one of the at least two head members to one of the at least two bodies, and wherein at least one of the stems is attached to at lead one of the bodies with external threads defined on the at least one stem and internal threads defined in a bore in the at least one body for threaded engagement of the stem and the body.
Claim 27
Dependent Claim
164 words
A kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, means for fixedly attaching one of the at least two head members to one of the at least two bodies, and wherein at least one of the stems is attached to at lead one of the bodies with external threads defined on the at least one stem and internal threads defined in a bore in the at least one body for threaded engagement of the stem and the body.
Claim 28
Dependent Claim
56 words
The kit of claim 22, wherein at least one of the stems further comprises frangible means for limiting torque application to the stem, the frangible means configured to break and prevent further tightening of the stem upon application of a predetermined amount of torque acting to tighten the threaded engagement of the stem and the body.
Claim 29
Dependent Claim
184 words
The kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, means for fixedly attaching one of the at least two head members to one of the at least two bodies, and wherein the means for fixedly attaching one of the at least two head members to one of the at least two bodies further comprises a lock finger attached to one of the at least two head members, the lock finger being formed to define a lock element having a non-circular cross section to prevent rotation of the lock finger relative to the one of at least two bodies.
Claim 30
Dependent Claim
184 words
The kit for the assembly of a modular bone joint prosthesis for the replacement of a head, neck, and adjacent portions of a bone, the kit comprising at least two stems, with each stem sized for insertion into a cavity of the bone, at least two bodies, with each body sized to replace a portion of the bone, and with each body configured to be joined in fixed attachment to one of the at least two stems, at least two head members, with each head member sized to replace a head portion of the bone, means for fixedly attaching one of the at least two head members to one of the at least two bodies, and wherein the means for fixedly attaching one of the at least two head members to one of the at least two bodies further comprises a lock finger attached to one of the at least two head members, the lock finger being formed to define a lock element having a non-circular cross section to prevent rotation of the lock finger relative to the one of at least two bodies.
Claim 31
Dependent Claim
22 words
The kit of claim 24, wherein the lock finger attached to one of the at least two head members is centrally attached.
Claim 32
Dependent Claim
22 words
The kit of claim 24, wherein the lock finger attached to one of the at least two head members is eccentrically attached.
Claim 33
Dependent Claim
27 words
The kit of claim 20, wherein one of the at least two stems has a different size and shape as another of the at least two stems.
Claim 34
Dependent Claim
27 words
The kit of claim 20, wherein one of the at least two bodies has a different size and shape as another of the at least two bodies.
Claim 35
Dependent Claim
27 words
The kit of claim 27, wherein one of the at least two bodies has a different size and shape as another of the at least two bodies.
Claim 36
Dependent Claim
29 words
The kit of claim 20, wherein one of the at least two head members has a different size and shape as another of the at least two head members.
Claim 37
Dependent Claim
29 words
The kit of claim 27, wherein one of the at least two head members has a different size and shape as another of the at least two head members.
Claim 38
Dependent Claim
29 words
The kit of claim 28, wherein one of the at least two head members has a different size and shape as another of the at least two head members.
Claim 39
Dependent Claim
29 words
The kit of claim 29, wherein one of the at least two head members has a different size and shape as another of the at least two head members.
Claim 40
Dependent Claim
94 words
An implant apparatus for replacing a joint portion of a bone, the implant comprising a body formed to define a first and second bore therein, a stem having an upper portion and a lower portion, the lower portion being sized to be received in a cavity of the bone and the upper portion configured to fit in the first bore of the body, and a head member sized to replace a head portion of the bone, the head member having an attached lock finger configured to fit in the second bore of the body.
Claim 41
Dependent Claim
94 words
An implant apparatus for replacing a joint portion of a bone, the implant comprising a body formed to define a first and second bore therein, a stem having an upper portion and a lower portion, the lower portion being sized to be received in a cavity of the bone and the upper portion configured to fit in the first bore of the body, and a head member sized to replace a head portion of the bone, the head member having an attached lock finger configured to fit in the second bore of the body.
Claim 42
Dependent Claim
17 words
The implant apparatus of claim 34, wherein the lock finger is eccentrically attached to the head member.
Claim 43
Dependent Claim
60 words
The implant apparatus of claim 35, wherein the second bore of the body is formed to define a locking socket having a hexagonal cross section and the lock finger further comprises a hexagonal lock element configured to fit in the locking socket so that the head member can be positioned relative to the body in one of six possible orientations.
Claim 44
Dependent Claim
18 words
The implant apparatus of claim 34, further comprising a collar positioned between the head member and the body.
Claim 45
Dependent Claim
25 words
The implant apparatus of claim 37, wherein the collar is formed to define an central opening sized to permit passage therethrough of the lock finger.
Claim 46
Dependent Claim
28 words
The implant apparatus of claim 34, wherein the stem is configured to present a bond ingrowth surface to facilitate long-term attachment of the stem in the bone cavity.
Claim 47
Dependent Claim
52 words
The implant apparatus of claim 39, wherein the first bore is formed to define internal threads and wherein the stem further comprises external threads defined on the upper portion of the stem, the external threads being dimensional to match the internal threads to permit threaded engagement of the stem and the body.
Claim 48
Dependent Claim
52 words
The apparatus of claim 40, wherein the stem further comprises frangible means for limiting torque application to the stem, the frangible means configured to break and prevent further tightening of the stem upon application of a predetermined amount of torque acting to tighten the threaded engagement of the stem and the body.
Claim 49
Dependent Claim
57 words
An implant apparatus for replacing a joint portion of a bone, the implant comprising a body formed to define a bore therein, a head member sized to replace a head portion of the bone, means for eccentric attachment of the head member to the body to allow adjustable positioning of the head member relative to the body.
Claim 50
Dependent Claim
57 words
An implant apparatus for replacing a joint portion of a bone, the implant comprising a body formed to define a bore therein, a head member sized to replace a head portion of the bone, means for eccentric attachment of the head member to the body to allow adjustable positioning of the head member relative to the body.
Claim 51
Dependent Claim
22 words
The implant apparatus of claim 42, wherein the eccentric attachment means further comprises a lock finger eccentrically attached to the head member.
Claim 52
Dependent Claim
41 words
The implant apparatus of claim 43, wherein the bore of the body is formed to define a locking socket having a non-circular cross section and the lock finger further comprises a lock element configured to lockingly fit in the locking socket.
Claim 53
Dependent Claim
54 words
The implant apparatus of claim 44, wherein the locking socket has a hexagonal cross section and the lock element of the lock finger further comprises a hexagonal lock element sized to fit in the locking socket so that the head member can be positioned relative to the body in one of six possible orientations.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-05-23 | 1997-11-22 | 1998-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-05-23 | 2001-11-22 | 2002-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-05-23 | 2005-11-22 | 2006-05-24 | $7700.00 | Window Closed / Lapsed |