US5735901A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Element for temporarily increasing the rigidity of an orthopaedic prosthesis
Assignee: Sulzer Medizinaltechnik AG
•
Filing: 1996-05-29
•
Granted: 1998-04-07
•
Expires: 2016-05-29
Abstract
Abstract The element (20) according to the invention comprises a biodegradable body which is before or during the implantation of an orthopaedic prosthesis (1) inserted into a recess (2) in the prosthesis (1) such that the rigidity of the prosthesis is increased. The element (20) provides mechanical connection between the shell segments (1a, 1b, 1c) so that the element (20) performs a supporting function which reduces the elastic properties or the possibilities of movement of the outer shell (1). The ability of the biodegradable element (20) to transfer forces is increasingly reduced after the implantation so that the outer shell (1) of the artificial acetabulum has increasingly more elastic properties depending on the mechanical properties determined by the structure. Some time after the implantation, the biodegradable element (20) degrades so much that it no longer transfers any forces.
Inventors
- 👤 Jean Maumy
- 👤 Roland Baege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:17
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/32; A61F2/34; A61F2/36; A61F2/3662; A61F2/367; A61L; A61L27/00; A61L27/50; A61L27/58; A61F2/28; A61F2002/286; A61F2002/30001; A61F2002/30003; A61F2002/30004; A61F2002/30014; A61F2002/30032; A61F2002/3006; A61F2002/30062; A61F2002/30108; A61F2002/3011; A61F2002/30159; A61F2002/30172; A61F2002/30181; A61F2002/30316; A61F2002/30329; A61F2002/30383; A61F2002/30387; A61F2002/30433; A61F2002/30476; A61F2002/30492; A61F2002/305; A61F2002/30535; A61F2002/30565; A61F2002/30593; A61F2002/30594; A61F2002/30667; A61F2002/30672; A61F2002/30677; A61F2002/30733; A61F2/30767; A61F2/30771; A61F2002/30772; A61F2002/30784; A61F2002/30787; A61F2002/30795; A61F2002/30797; A61F2002/30878; A61F2002/30879; A61F2002/3401; A61F2002/3403; A61F2002/3412; A61F2002/3414; A61F2002/342; A61F2002/3445; A61F2002/3448; A61F2002/348; A61F2002/3482; A61F2002/3485; A61F2210/00; A61F2210/0004; A61F2220/00; A61F2220/0025; A61F2220/0041; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/0052; A61F2230/006; A61F2250/00; A61F2250/0014; A61F2250/0018; A61F2250/003; A61F2250/0031
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
A method for implanting an orthopaedic prosthesis into a patient's body, the method comprising: inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, the recess being defined by at least first and second elastic elements; substantially preventing deflection of the elastic elements toward each other with the biodegradable element; implanting the prosthetic body into the patient's body; and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; wherein the implanting step comprises introducing an acetabulum into a hip joint of the patient.
Claim 2
Independent Claim
96 words
A method for implanting an orthopaedic prosthesis into a patient's body, the method comprising: inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, the recess being defined by at least first and second elastic elements; substantially preventing deflection of the elastic elements toward each other with the biodegradable element; implanting the prosthetic body into the patient's body; and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; wherein the implanting step comprises introducing an acetabulum into a hip joint of the patient.
Claim 3
Dependent Claim
31 words
The method of claim 1 further comprising, after the biodegrading step, allowing the first and second elastic elements to deflect towards each other into the space vacated by the biodegradable element.
Claim 4
Dependent Claim
32 words
The method of claim 1 further comprising frictionally engaging the biodegradable element with an inner surface of the recess to substantially prevent relative movement between the biodegradable element and the prosthetic body.
Claim 5
Dependent Claim
21 words
The method of claim 3 further comprising preventing the biodegradable element from extending beyond an outer surface of the support body.
Claim 6
Dependent Claim
20 words
The method of claim 1 wherein the implanting step comprises introducing a prosthetic shaft into a hollow of a bone.
Claim 7
Dependent Claim
11 words
The method of claim 1 wherein the prosthetic body is metal.
Claim 8
Independent Claim
89 words
A method for implanting an orthopaedic prosthesis into a patient's body, the method comprising: inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, the recess being defined by at least first and second elastic elements; substantially preventing deflection of the elastic elements toward each other with the biodegradable element; implanting the prosthetic body into the patient's body; and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; and wherein the prosthetic body is substantially non-bioreabsorbable.
Claim 9
Independent Claim
89 words
A method for implanting an orthopaedic prosthesis into a patient's body, the method comprising: inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, the recess being defined by at least first and second elastic elements; substantially preventing deflection of the elastic elements toward each other with the biodegradable element; implanting the prosthetic body into the patient's body; and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; and wherein the prosthetic body is substantially non-bioreabsorbable.
Claim 10
Independent Claim
145 words
A method for implanting an orthopaedic prosthesis into a patient's body comprising: introducing a prosthetic body into a cavity within a patient's body; temporarily increasing the rigidity of a portion of the prosthetic body to reduce relative movement between the prosthetic body and the inner walls of the cavity; anchoring the prosthetic body to the inner walls of the cavity; after the anchoring step, decreasing the rigidity of said portion of the prosthetic body after the prosthetic body has become substantially fixed to the inner walls of the cavity; inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; and wherein the biodegradable element is inserted into the recess before the prosthetic body is introduced into the cavity of the patient's body.
Claim 11
Independent Claim
145 words
A method for implanting an orthopaedic prosthesis into a patient's body comprising: introducing a prosthetic body into a cavity within a patient's body; temporarily increasing the rigidity of a portion of the prosthetic body to reduce relative movement between the prosthetic body and the inner walls of the cavity; anchoring the prosthetic body to the inner walls of the cavity; after the anchoring step, decreasing the rigidity of said portion of the prosthetic body after the prosthetic body has become substantially fixed to the inner walls of the cavity; inserting a biodegradable element into a recess of a prosthetic body without plastically deforming the prosthetic body, and biodegrading at least a portion of the biodegradable element thereby creating space within the recess; and wherein the biodegradable element is inserted into the recess before the prosthetic body is introduced into the cavity of the patient's body.
References Cited (Backward Citations)
US4329743A
Cited
DE3322978A1
Cited
WO1985005027A1
Cited
EP0176711A1
Cited
EP0321389A1
Cited
EP0346270A1
Cited
EP0404716A1
Cited
US5092896A
Cited
EP0445068A1
Cited
US5163960A
Cited
US5116357A
Cited
US5192331A
Cited
US5201738A
Cited
EP0495341A1
Cited
US5310408A
Cited
US5310408B1
Cited
WO1993008770A1
Cited
US5360450A
Cited
US5207712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-04-06 | 2001-10-06 | 2002-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-04-06 | 2005-10-06 | 2006-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-04-06 | 2009-10-06 | 2010-04-07 | $7700.00 | Window Closed / Lapsed |