Patent EP0850653A2 successfully refreshed from Google Patents.
EP0850653A2
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EP
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Catheter transition system
Assignee: Schneider USA Inc
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Filing: 1997-12-05
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Granted: —
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Expires: 2017-12-05
Abstract
Abstract A method of joining successive sections of tubular members having substantially dissimilar flexibilities is involved that includes the step of providing a transitional zone intermediate said successive sections having a flexibility intermediate those of the successive sections. Articles made by the process are also disclosed.
Inventors
- 👤 M.Prindle Kathy
- 👤 L.Goodin Richard
- 👤 L.Swanson Kristen
- 👤 S. Bronson Marry
- 👤 S.Kusleika Richard
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 16:43
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0014; B; B29; B29C; B29C65/00; B29C65/48; B29C65/50; B29C65/5042; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5221; B29C66/63; B29C66/70; B29C66/72; B29C66/721; B29C66/73; B29C66/739; B29C66/7392; B29C66/7394; A61M25/0043; A61M25/0054; B29C65/4805; B29C65/481; B29C65/4815; B29C66/71; B29K; B29K2023/00; B29K2079/00; B29K2079/08; B29K2105/00; B29K2105/06; B29L; B29L2031/00; B29L2031/753; B29L2031/7542; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4981
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
51 words
A method of joining successive sections of tubular
members having substantially dissimilar flexibilities that
includes the step of providing a transitional zone intermediate
said successive sections wherein said transitional zone
includes at least one intermediate overlapping sleeve member
imparting a flexibility to the transitional zone intermediate
those of the successive sections.
Claim 2
Dependent Claim
39 words
The method of claim 1 wherein a relatively stiff
tubular proximal catheter shaft of wire reinforced polyimide
is joined to a polyolefin distal stem and wherein said at least
one intermediate sleeve member is an overlapping polyolefin
distal sleeve.
Claim 3
Independent Claim
15 words
The method of claims 1 or 2 wherein a plurality of
overlapping sleeves are used.
Claim 4
Independent Claim
174 words
The method of any preceding claim wherein the
successive sections comprise a proximal shaft and distal stem
sections of a tubular catheter device, the method comprising
the steps of: (a) removing an outer layer of tubular sidewall from a
short distal segment at a distal end of the proximal shaft to
produce a stepped down distal end thereon; (b) fitting a short inner sleeve member over the stepped
down distal end of said shaft, said inner sleeve member
extending beyond said distal end forming a sleeve extension; (c) reducing the outside diameter of said inner sleeve
by drawing through a heated die; (d) fitting an outer sleeve member over said inner sleeve
member; (e) applying a heat, shrinkable material over outer
sleeve and applying sufficient heat to achieve a composite
transition section at said stepped down end of said shaft
including said inner and said outer sleeves, said composite
having a flexibility greater than that of said shaft; (f) removing said heat shrinkable material; and (g) attaching a stem section to said sleeve extension.
Claim 5
Dependent Claim
18 words
The method of claim 4 wherein said composite
transition section has the same outside diameter as said shaft.
Claim 6
Dependent Claim
18 words
The method of claim 4 wherein said stem is fit inside
said sleeve extension of said inner sleeve.
Claim 7
Dependent Claim
29 words
The method of claim 4 wherein said composite
transition section has a greater flexibility than said shaft;
and said stem section has a greater flexibility than said
transition section.
Claim 8
Independent Claim
21 words
The method of any one of claims 4 to 7 wherein said
inner sleeve is more flexible than said outer sleeve.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein said shaft comprises
polyamide, said inner sleeve is low density
polyethylene and said outer sleeve is high density
polyethylene.
Claim 10
Dependent Claim
16 words
The method of claim 8 wherein said stem
comprises the same material as said inner sleeve.
Claim 11
Dependent Claim
87 words
A catheter comprising: (a) a proximal tubular section having a distal
end, the distal end having a substantially circular non-interrupted
cross section and a first flexibility; (b) a distal section having a proximal end, the
proximal end having a substantially circular non-interrupted
cross section and a second flexibility; and (c) a transition section intermediate the proximal
section and the distal section, the transition section
overlapping said proximal section and said distal
section and providing a composite flexibility
intermediate that of said proximal section and said
distal section.
Claim 12
Dependent Claim
19 words
The catheter of claim 11 wherein said proximal
section comprises a polyimide and said distal section
comprises a polyolefin.
Claim 13
Dependent Claim
19 words
The catheter of claim 11 wherein said
transition section has the same outer diameter as said
proximal shaft section.
References Cited (Backward Citations)
No citation records indexed.
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