Patent US5333620A successfully refreshed from Google Patents.
US5333620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High performance plastic coated medical guidewire
Assignee: Medtronic Vascular Inc
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Filing: 1993-09-08
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Granted: 1994-08-02
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Expires: 2013-09-08
Abstract
Abstract A guidewire having a metal wire core and a high performance plastic sleeve extruded thereover. A tapering distal portion of the metal wire core extends beyond the high performance plastic sleeve. A coil formed of radiopaque material is mounted about the distal portion. A compliant jacket covers the high performance plastic sleeve and the radiopaque coil. The compliant jacket includes a lubricious coating.
Inventors
- 👤 Timothy E. Moutafis
- 👤 Richard K. Elton
- 👤 Thomas C. DuBois
- 👤 Bruce N. MacMore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09083; A61M2025/09091; A61M2025/09166
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
64 words
A medical guidewire comprising: an elongated metal core; and a plastic layer surrounding said elongated metal core at least partially along its length thereof, said plastic layer having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%.
Claim 2
Dependent Claim
64 words
A medical guidewire comprising: an elongated metal core; and a plastic layer surrounding said elongated metal core at least partially along its length thereof, said plastic layer having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%.
Claim 3
Dependent Claim
19 words
The medical guidewire recited in claim 1 wherein said plastic layer and said elongated metal core are directly connected.
Claim 4
Dependent Claim
18 words
The medical guidewire recited in claim 2 wherein said plastic layer is extruded over said elongated metal core.
Claim 5
Dependent Claim
18 words
The medical guidewire recited in claim 2 wherein said plastic layer is bonded to said elongated metal core.
Claim 6
Dependent Claim
25 words
The medical guidewire recited in claim wherein a distal end of said plastic layer terminates proximal to a distal portion of said elongated metal core.
Claim 7
Dependent Claim
21 words
The medical guidewire recited in claim 5 wherein said distal end of said plastic layer tapers towards said elongated metal core.
Claim 8
Dependent Claim
14 words
The medical guidewire recited in claim 6 wherein said distal end taper is uniform.
Claim 9
Dependent Claim
22 words
The medical guidewire recited in claim 5 further including a flexible coil positioned about said distal portion of said elongate metal core.
Claim 10
Dependent Claim
15 words
The medical guidewire recited in claim 8 wherein said flexible coil contains a radiopaque material.
Claim 11
Dependent Claim
18 words
The medical guidewire recited in claim 8 wherein said flexible coil is formed from a radiopaque metal wire.
Claim 12
Dependent Claim
25 words
The medical guidewire recited in claim 8 wherein a proximal end of said flexible coil is fixed to said distal end of said plastic layer.
Claim 13
Dependent Claim
26 words
The medical guidewire recited in claim 11 wherein said proximal end of said flexible coil is fixed to said distal portion of said elongated metal core.
Claim 14
Dependent Claim
27 words
The medical guidewire recited in claim 8 wherein a distal tip of said distal portion has a perimeter wider than the inner perimeter of said flexible coil.
Claim 15
Dependent Claim
21 words
The medical guidewire recited in claim 8 wherein the outer diameter of said medical guidewire is uniform along the length thereof.
Claim 16
Dependent Claim
27 words
The medical guidewire recited in claim 8 wherein at least a portion of said distal portion of said elongated metal core is tapered towards the axis thereof,
Claim 17
Dependent Claim
16 words
The medical guidewire recited in claim 1 further comprising a compliant jacket covering said plastic layer.
Claim 18
Dependent Claim
17 words
The medical guidewire recited in claim 16 wherein said compliant jacket is shrinkwrapped to said plastic layer.
Claim 19
Dependent Claim
17 words
The medical guidewire recited in claim 16 wherein said compliant jacket is formed of a polyurethane material.
Claim 20
Dependent Claim
15 words
The medical guidewire recited in claim 16 wherein said compliant jacket supports a lubricious material.
Claim 21
Dependent Claim
22 words
The medical guidewire recited in claim 19 wherein said lubricious material includes a lubricious coating on the surface of said compliant jacket.
Claim 22
Dependent Claim
17 words
The medical guidewire recited in claim 19 wherein said lubricious material is contained within said compliant jacket.
Claim 23
Dependent Claim
13 words
The medical guidewire recited in claim 19 wherein said lubricious material is hydrophilic.
Claim 24
Dependent Claim
35 words
The medical guidewire recited in claim 19 wherein said lubricious material is selected from the group of materials consisting of a complex of polyurethane, polyvinylpyrrlidone, a complex of polyurethane and poly(ethylene oxide) and mixtures thereof
Claim 25
Dependent Claim
35 words
The medical guidewire recited in claim 16 wherein said plastic layer terminates proximally to a distal portion of said elongated metal core and said compliant jacket covers said plastic layer and a said distal portion.
Claim 26
Dependent Claim
27 words
The medical guidewire recited in claim 24 wherein said distal portion includes a gradually tapering portion and said compliant jacket covering includes a gradual taper relative thereto.
Claim 27
Dependent Claim
21 words
The medical guidewire recited in claim 24 wherein said compliant jacket includes a closed rounded end extending beyond said distal end.
Claim 28
Dependent Claim
17 words
The medical guidewire recited in claim 26 wherein said closed rounded end is filled with a resin.
Claim 29
Dependent Claim
18 words
The medical guidewire recited in claim 1 wherein said plastic layer is formed from a high performance plastic.
Claim 30
Dependent Claim
37 words
The medical guidewire recited in claim 28 wherein said high performance plastic is selected from the group of materials consisting of polysulfone, polyimide, polyester, polyetheretherketone, polyarylene ketone, polyphenylene sulfide, polyarylene sulfide, polyamideimide, polyetherimide, polyimidesulfone, polyarylsulfone, and polyarylethersulfone.
Claim 31
Dependent Claim
106 words
A medical guidewire comprising: an elongated metal wire having a tapering distal portion; a radiopaque coil mounted about said tapering distal portion; a high performance plastic sleeve extruded over said elongated metal wire and terminating proximal to said tapering distal portion, said high performance plastic sleeve having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%. a compliant jacket shrinkwrapped over said high performance plastic sleeve and said radiopaque coil; and a lubricious material supported by said compliant jacket.
Claim 32
Dependent Claim
106 words
A medical guidewire comprising: an elongated metal wire having a tapering distal portion; a radiopaque coil mounted about said tapering distal portion; a high performance plastic sleeve extruded over said elongated metal wire and terminating proximal to said tapering distal portion, said high performance plastic sleeve having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%. a compliant jacket shrinkwrapped over said high performance plastic sleeve and said radiopaque coil; and a lubricious material supported by said compliant jacket.
Claim 33
Dependent Claim
69 words
A medical guidewire comprising: an elongated core formed from a non-superelastic metal; and a plastic layer surrounding said elongated non-superelastic metal core at least partially along its length thereof, said plastic layer having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%.
Claim 34
Dependent Claim
69 words
A medical guidewire comprising: an elongated core formed from a non-superelastic metal; and a plastic layer surrounding said elongated non-superelastic metal core at least partially along its length thereof, said plastic layer having a flexural modulus which does not degrade below 150,000 p.s.i. after exposure to an aqueous environment at a temperature of approximately 37° C., such as human blood, and an elongation at yield of at least 2%.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-01 | 1998-01-31 | 1998-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-01 | 2002-01-31 | 2002-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-01 | 2006-01-31 | 2006-08-02 | $7700.00 | Window Closed / Lapsed |