US4922905A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dilatation catheter
Assignee: Boston Scientific Corp
•
Filing: 1987-05-28
•
Granted: 1990-05-08
•
Expires: 2007-05-28
Abstract
Abstract Mounted on the catheter is an endoprosthesis which can be inserted into a vessel, for example, in a predetermined position, radially expandable, implantable at the expansion site, where it is subsequently retained in place. The endoprosthesis can encompass a section of the catheter by its own radial tension and can thereby be retained in an essentially fixed position, without axial play, while its separation from the catheter is effected by radial expansion during implantation. The endoprosthesis may, however, also be mounted on the catheter in an essentailly fixed position, without axial play, by mechanical means ceasing to be effective after the implantation because of radial expansion, or which can be eliminated after the implantation so as to enable the catheter to be withdrawn.
Inventors
- 👤 Ernst P. Strecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:42
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/24; A61F2/2412; A61F2/2421; A61F2/2424; A61F2/82; A61F2/92; A61F2/95; A61F2/958; A61M; A61M25/00; A61M25/10; A61M25/1006; D; D04; D04B; D04B1/00; D04B1/22; D04B1/225; A61F2/2475; A61F2210/00; A61F2210/0076; A61M25/01; A61M25/06; A61M25/0662; A61M2025/0681; A61M2025/1043; A61M2025/1061; A61M2025/1081; D10; D10B; D10B2509/00; D10B2509/06
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
74 words
A tubular endoprosthesis device having a wall structure comprised of an open fabric of loosely interlocked loops of filament material, the device having a first relatively small diameter form for low profile introduction to a body passageway while encircling a radially expandable section of a catheter, said loops being capable of progressive permanent deformation with attendant radial expansion of the open fabric in response to increasing expansion of said expandable section of the catheter.
Claim 2
Dependent Claim
74 words
A tubular endoprosthesis device having a wall structure comprised of an open fabric of loosely interlocked loops of filament material, the device having a first relatively small diameter form for low profile introduction to a body passageway while encircling a radially expandable section of a catheter, said loops being capable of progressive permanent deformation with attendant radial expansion of the open fabric in response to increasing expansion of said expandable section of the catheter.
Claim 3
Dependent Claim
72 words
A catheter having an expandable section, and a tubular endoprosthesis device disposed on said catheter, surrounding said section, the wall structure of said device being comprised of an open fabric of loosely interlocked loops of filament material, said loops being capable of progressive permanent deformation, with attendant radial expansion of the open fabric from a first relatively small diameter form, in response to increasing expansion of said expandable section of said catheter.
Claim 4
Dependent Claim
72 words
A catheter having an expandable section, and a tubular endoprosthesis device disposed on said catheter, surrounding said section, the wall structure of said device being comprised of an open fabric of loosely interlocked loops of filament material, said loops being capable of progressive permanent deformation, with attendant radial expansion of the open fabric from a first relatively small diameter form, in response to increasing expansion of said expandable section of said catheter.
Claim 5
Dependent Claim
37 words
The invention of claim 1 wherein said wall structure of said endoprosthesis device in its said first, small diameter form comprises a radially inwardly deformed interlocking loop structure, there being clearance between interlocking loops of said wall.
Claim 6
Dependent Claim
33 words
The invention of any of claims 1, 2 or 3 wherein said tubular wall structure in its first, small diameter form, is in a radially shaped, reduced-diameter state relative to its as-formed state.
Claim 7
Dependent Claim
33 words
The invention of claim 1, 2 or 3 wherein said fabric of loosely interlocked loops is constructed such that said radial expansion occurs without change of the axial length of said endoprosthesis device.
Claim 8
Dependent Claim
22 words
The invention of claim 1, 2 or 3 wherein said wall structure formed of loosely interlocked loops comprises an open knit fabric.
Claim 9
Dependent Claim
25 words
The invention of any of the claims 1, 2 or 3 wherein said wall structure formed of loosely interlocked loops comprises an open crocheted fabric.
Claim 10
Dependent Claim
41 words
The invention of any of the claims 1, 2 or 3 wherein the filaments of said loosely interlocked loops comprise metal wire selected to enable progressive permanent deformation of said loops in response to increasing expansion of said expandable catheter section.
Claim 11
Dependent Claim
41 words
The invention of any of the claims 1, 2 or 3 wherein the filaments of said loosely interlocked loops comprise plastic filaments selected to enable progressive permanent deformation of said loops in response to increasing expansion of said expandable catheter section.
Claim 12
Dependent Claim
22 words
The invention of any of the claims 1, 2 or 3 wherein said wall of said endoprosthesis includes a biocompatible liquid-impermeable layer.
Claim 13
Dependent Claim
21 words
The invention of claim 10, wherein said liquid impermeable layer comprises a cuff-like covering positioned inside or outside said open fabric.
Claim 14
Dependent Claim
32 words
The invention of claim 1, 2 or 3 wherein said endoprosthesis is constructed and arranged to be placed in a blood vessel of a patient to provide support to the wall thereof.
Claim 15
Dependent Claim
27 words
The invention of any of claims 1, 2 or 3 wherein said wall structure of said endoprosthesis comprises an inner and an outer layer of filament material.
Claim 16
Dependent Claim
36 words
The invention of claim 13, wherein said endoprosthesis includes an anchor held within said outer layer of said endoprosthesis, said anchor being capable of penetrating said outer layer of said endoprosthesis upon expansion of said endoprosthesis.
Claim 17
Dependent Claim
27 words
The invention of claim 14, wherein said anchor is linked to said inner layer of said endoprosthesis by an anchor pin radially extending from said inner layer.
Claim 18
Dependent Claim
30 words
The invention of any of claims 1, 2 or 3 wherein said wall structure of said endoprosthesis is formed from a filament like material comprising side-by-side filaments forming a cord.
Claim 19
Dependent Claim
56 words
The invention of any of claims 1, 2 or 3 wherein said endoprosthesis comprises two cone-shaped segments axially extending, respectively, from the ends of said endoprosthesis, said segments comprising loops of filament material and each having at its end a non-expandable retaining ring, one of said segments including a lining or coating of liquid impervious material.
Claim 20
Dependent Claim
68 words
The invention of any of claims 1, 2 or 3 wherein said endoprosthesis comprises two rhomboid-shaped valves at one end of said endoprosthesis said valves comprising a fine-meshed web having interwoven filaments running approximately parallel with one arm of the edges of the valve wherein said valves are positioned along the axial direction of said endoprosthesis and are connected along two edges with an edge of the endoprosthesis.
Claim 21
Dependent Claim
17 words
The invention of claim 2 wherein said catheter includes a passage suitable for continuous administration of medication.
Claim 22
Dependent Claim
15 words
The catheter of claim 2 wherein said expandible section of said catheter comprises a balloon.
Claim 23
Dependent Claim
25 words
The invention of claim 2 wherein an axially removable thin-walled sheath lies over at least part of said endoprosthesis, securing said endoprosthesis on said catheter.
Claim 24
Dependent Claim
18 words
The invention of claim 21 wherein said sheath is adapted to be pulled axially off of said endoprosthesis.
Claim 25
Dependent Claim
148 words
In a tubular endoprosthesis device having a wall structure comprised of filament material, the device having a first relatively small diameter form for low profile introduction to a body passageway while encircling a radially expandable section of a catheter, said device being radially deformable by expansion of the catheter section from said first form to a permanent, radially expanded form, said device in said expanded form being capable of maintaining engagement with the bounding wall of said passageway, the improvement wherein the wall structure of said device is comprised of a tube-like, knitted open fabric of loosely interlocked loops of metallic filament material, said tube-like fabric being radially inwardly deformed relative to its as-knit form and having clearance between loops, said loops being capable of progressive permanent deformation with attendant radial expansion of the open fabric in response to increasing expansion of said expandable section of the catheter.
Claim 26
Dependent Claim
148 words
In a tubular endoprosthesis device having a wall structure comprised of filament material, the device having a first relatively small diameter form for low profile introduction to a body passageway while encircling a radially expandable section of a catheter, said device being radially deformable by expansion of the catheter section from said first form to a permanent, radially expanded form, said device in said expanded form being capable of maintaining engagement with the bounding wall of said passageway, the improvement wherein the wall structure of said device is comprised of a tube-like, knitted open fabric of loosely interlocked loops of metallic filament material, said tube-like fabric being radially inwardly deformed relative to its as-knit form and having clearance between loops, said loops being capable of progressive permanent deformation with attendant radial expansion of the open fabric in response to increasing expansion of said expandable section of the catheter.
Claim 27
Dependent Claim
18 words
The device of claim 23, wherein said filament material is in the order of 0.1 mm. in diameter.
References Cited (Backward Citations)
GB1205743A
Cited
US3868956A
Cited
FR2391709A2
Cited
GB1565828A
Cited
US4434797A
Cited
US4448195A
Cited
US4655771A
Cited
FR2525896A1
Cited
WO1983003752A1
Cited
US4655771B1
Cited
US4512338A
Cited
US4503569A
Cited
US4580568A
Cited
EP0183372A1
Cited
US4776337A
Cited
EP0221570B1
Cited
US4776337B1
Cited
DE3640745A1
Cited
US4681110A
Cited
US4762128A
Cited
US4800882A
Cited
US4762507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |