EP0073604A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Apparatus for the pressurisation of cement in bones
Assignee: University of Exeter
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Filing: 1982-08-18
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Granted: —
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Expires: 2002-08-18
Abstract
Abstract A seal member (20; 36; 48; 114) for fitting over and sealing the opening of a cavity in a bone (10) to allow pressurisation of cement in the cavity has an aperture (32; 118) for sealingly receiving a cement delivery nozzle (34). The seal member may be a balloon seal (20; 36; 48; 114), which may be inflatable and expandable (20;114), or a solid body of conformable material. In use, the seal member is urged against the opening (12), e. g. by force applied by the barrel (136) of a cement delivery gun on an abutment means (52; 122; 222) having an apertured pressure piece (126; 226) shaped to urge the seal member (144) against the mouth of the opening.
Inventors
- 👤 Alan John Clive Lee
- 👤 Robin Sidney Mackwood Ling
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 12:07
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/56; A61B17/58; A61B17/88; A61B17/8802; A61B17/8805; A61B17/8808; A61F; A61F2/00; A61F2/02; A61F2/30; A61F2/30721; A61F2/30723; A61F2/30728; A61F2/32; A61F2/34; A61F2/36; A61F2/3662; A61F2002/30001; A61F2002/30316; A61F2002/30535; A61F2002/30581
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
52 words
Apparatus for use in pressurisation of cement in a cavity in a bone, comprising a seal member (20;36;48;114) for fitting over and sealing the opening of the cavity, characterised in that the seal member (20;36;48;114) has an aperture (32;118) therethrough arranged to receive sealingly a nozzle (34) for the delivery of cement.
Claim 2
Dependent Claim
52 words
Apparatus for use in pressurisation of cement in a cavity in a bone, comprising a seal member (20;36;48;114) for fitting over and sealing the opening of the cavity, characterised in that the seal member (20;36;48;114) has an aperture (32;118) therethrough arranged to receive sealingly a nozzle (34) for the delivery of cement.
Claim 3
Dependent Claim
24 words
Apparatus according to claim 1 wherein the seal member (20;36;48;114) comprises a flexible, liquid-containing bag deformable to facilitate sealing at an irregularly-shaped cavity opening.
Claim 4
Dependent Claim
16 words
Apparatus according to claim 2 wherein the bag (20;114) has means (21;116) for inflation with liquid.
Claim 5
Dependent Claim
14 words
Apparatus according to claim 3 wherein the bag (20;114) is resiliently extendible by inflation.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 1 wherein the seal member comprises a substantially solid body of conformable material.
Claim 7
Dependent Claim
52 words
Apparatus according to any preceding claim further including abutment means (26;50;122;222) adapted to overlie the seal member (20;36;48;114) and having an aperture (130) therethrough arranged to receive said delivery nozzle (34); said abutment means (26;50;122;222) having means (26;52;124, 138) for urging it to urge said seal member against said bone cavity opening.
Claim 8
Dependent Claim
44 words
Apparatus according to claim 6 wherein in use, said delivery nozzle (34) is provided by a dispensing means (136) and wherein said urging means (52;133) is an abutment surface of the abutment means arranged to be abuttable against by a said dispensing means (136).
Claim 9
Dependent Claim
26 words
Apparatus according to claim 7 wherein said abutment means comprises an apertured pressure piece (126;226) shaped to urge the seal member (114) against the cavity opening.
Claim 10
Dependent Claim
13 words
Apparatus according to claim 8 wherein said pressure piece (126) is substantially banana-shaped.
Claim 11
Dependent Claim
41 words
Apparatus according to claim 8 or 9 wherein said pressure piece (126) is shaped so as to be usable in a plurality of different configurations in each of which it tends to urge the seal member (114) to a different form.
Claim 12
Dependent Claim
54 words
Apparatus according to claim 8, 9 or 10 wherein the abutment surface is provided by an abutment assembly comprising an apertured bridge piece (134;234) arranged to contact the pressure piece (126;226) on either side of its aperture (130), and a receiving portion (124) adapted to receive an end portion of said dispensing means (136).
Claim 13
Dependent Claim
103 words
Abutment means (50;122;222) for use in the pressurisation of cement in a bone cavity using an apertured seal member (48;114) for sealing the opening of the cavity, said aperture of the seal member being arranged to receive sealingly a nozzle (34) of a dispensing means for the delivery of cement; said abutment means (50;122;222) comprising an abutment member which is arranged to overlie the seal member and which has an aperture for the passage of said nozzle (34); and wherein said abutment means is adapted to be urged by the dispensing means to urge the seal member to seal the bone cavity opening.
Claim 14
Dependent Claim
103 words
Abutment means (50;122;222) for use in the pressurisation of cement in a bone cavity using an apertured seal member (48;114) for sealing the opening of the cavity, said aperture of the seal member being arranged to receive sealingly a nozzle (34) of a dispensing means for the delivery of cement; said abutment means (50;122;222) comprising an abutment member which is arranged to overlie the seal member and which has an aperture for the passage of said nozzle (34); and wherein said abutment means is adapted to be urged by the dispensing means to urge the seal member to seal the bone cavity opening.
References Cited (Backward Citations)
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