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US6152931A
Expired / Lapsed
US
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Medical device comprising a rod equipped with a means for absorbing axial stresses
Assignee: B Braun Medical SAS
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Filing: 1999-02-12
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Granted: 2000-11-28
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Expires: 2019-02-12
Abstract
Abstract The invention relates to a device for medical use which is capable of being introduced into a duct of a living human or animal body, said device comprising a biocompatible flexible rod which has an axis along which it extends, free of stress, in a rectilinear manner, said rod having a length along this axis, a distal end and a proximal end. This device is characterised in that in order that the rod should remain substantially at a specific implantation location in the duct it is equipped with at least one means for absorbing axial stresses which is disposed along the axis thereof and is distinct therefrom whilst being connected thereto, such that its proximal end is not substantially displaced axially once the rod has reached the specific implantation location in the duct.
Inventors
- 👤 Guy Nadal
- 👤 Gilles Bovyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:55
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/0069; A61F; A61F2/00; A61F2/01; A61F2/011; A61M25/01; A61M25/02; A61M2025/0293; A61M25/0043; A61M25/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
138 words
A device for medical use which can be introduced temporarily into a duct of a living human or animal patient's body at a specific implantation location, said device comprising: a biocompatible flexible rod which has an axis along which it extends in a rectilinear manner, said rod having a distal end and a proximal end, and an implant connected to the distal end of the rod and comprising a radially expansible structure, said rod being equipped with at least one means for absorbing axial stresses which is disposed along the axis of said rod and which is distinct therefrom while being connected thereto, whereby the proximal end of the rod is not substantially displaced axially once said rod and said implant have reached the specific implantation location, and wherein said means for absorbing axial stresses comprises a piston.
Claim 2
Independent Claim
138 words
A device for medical use which can be introduced temporarily into a duct of a living human or animal patient's body at a specific implantation location, said device comprising: a biocompatible flexible rod which has an axis along which it extends in a rectilinear manner, said rod having a distal end and a proximal end, and an implant connected to the distal end of the rod and comprising a radially expansible structure, said rod being equipped with at least one means for absorbing axial stresses which is disposed along the axis of said rod and which is distinct therefrom while being connected thereto, whereby the proximal end of the rod is not substantially displaced axially once said rod and said implant have reached the specific implantation location, and wherein said means for absorbing axial stresses comprises a piston.
Claim 3
Dependent Claim
13 words
A device according to claim 1, wherein the implant is a blood filter.
Claim 4
Dependent Claim
40 words
A device according to claim 1, wherein the means for absorbing axial stresses is disposed towards the proximal end of the rod, said proximal end being connected to a subcutaneous part which is locatable by palpation through the patient's skin.
Claim 5
Dependent Claim
28 words
A device according to claim 3, wherein the subcutaneous part which is locatable by palpation through the patient's skin is equipped with said means for absorbing axial stresses.
Claim 6
Dependent Claim
23 words
A device according to claim 1, wherein the means for absorbing axial stresses further comprises a bellows which can lengthen or shorten axially.
Claim 7
Dependent Claim
18 words
A device according to claim 1, wherein the means for absorbing axial stresses further comprises a helical spring.
Claim 8
Dependent Claim
22 words
A device according to claim 2, wherein the means for absorbing axial stresses is disposed towards the distal end of the rod.
Claim 9
Dependent Claim
24 words
A device according to claim 1, further comprising a guiding and stop system which limits axial displacement of said piston inside the flexible rod.
Claim 10
Dependent Claim
88 words
A device according to claim 8, wherein: the biocompatible flexible rod is hollow and has an internal diameter, the piston has an external diameter, and the guiding and stop system comprises: a first ring which is connected to the piston, said first ring having an external diameter which is slightly smaller than the internal diameter of the flexible rod, and a second ring which is fixed inside the flexible rod, said second ring having an internal diameter which is slightly greater than the external diameter of the piston.
Claim 11
Independent Claim
163 words
A device for medical use which can be introduced temporarily into a duct of a living human or animal body during an implantation period and which can be withdrawn therefrom after the implantation period, said device comprising: a biocompatible flexible rod which has an axis along which said rod extends in a rectilinear manner, said rod having a distal end and a proximal end; and an implant connected permanently to the distal end of the rod and having a radially expansible structure; wherein said rod has at least one means for absorbing axial stresses that is distinct from and connected to the rod, said means being permanently coupled to the implant so as to absorb axial stresses within the rod caused by movement of the human or animal body while said implant is implanted and in a radially expanded state, whereby the implant remains substantially in place at a desired implantation location within said duct as a said human or animal body moves.
Claim 12
Independent Claim
163 words
A device for medical use which can be introduced temporarily into a duct of a living human or animal body during an implantation period and which can be withdrawn therefrom after the implantation period, said device comprising: a biocompatible flexible rod which has an axis along which said rod extends in a rectilinear manner, said rod having a distal end and a proximal end; and an implant connected permanently to the distal end of the rod and having a radially expansible structure; wherein said rod has at least one means for absorbing axial stresses that is distinct from and connected to the rod, said means being permanently coupled to the implant so as to absorb axial stresses within the rod caused by movement of the human or animal body while said implant is implanted and in a radially expanded state, whereby the implant remains substantially in place at a desired implantation location within said duct as a said human or animal body moves.
References Cited (Backward Citations)
US4852564A
Cited
US4593690A
Cited
US4871356A
Cited
US5026377A
Cited
US5300086A
Cited
US5391183A
Cited
US5146925A
Cited
US5151105A
Cited
US5348541A
Cited
FR2715827A1
Cited
US5498250A
Cited
US5534007A
Cited
US5713907A
Cited
US5749918A
Cited
US5762615A
Cited
US5817101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-11-28 | 2004-05-29 | 2004-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-11-28 | 2008-05-29 | 2008-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-11-28 | 2012-05-29 | 2012-11-28 | $7700.00 | Window Closed / Lapsed |