US5376083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steerable infusion guide wire
Assignee: Lake Region Manufacturing Inc
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Filing: 1993-05-14
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Granted: 1994-12-27
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Expires: 2013-05-14
Abstract
Abstract A guide wire having state-of-the-art handling characteristics for ease in positioning a variety of catheters and other devices within the cardiovascular or other body system wherein the guide wire is also suitable for infusion of small volumes of fluid. The exceedingly small diameter guide wire has unique infusion properties. The guide wire body has at least one helical coil having a flexible nonporous sheath within the lumen. The helical coil is close wound along the majority of its length. The distal end of the helical coil has spaced windings to permit infusion of the fluid. The flexible nonporous sheath terminates proximal to the space wound portion. The solid core wire, which runs the entire length of the guide wire, is located within the same lumen used for infusion. This provides a greatly increased surface area in relation to the cross sectional area of the infusion lumen ensuring a slow but extremely constant infusion rate over a wide range of infusion pressures.
Inventors
- 👤 Hans A. Mische
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/09; A61M2025/09058; A61M2025/09083; A61M2025/091
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
144 words
An infusion guide wire having a proximal end and a distal end comprising: a. an outer coil having a proximal end and a distal end and having a first lumen; b. a flexible sheath having a proximal end and a distal end and having a second lumen located within said first lumen, said flexible sheath not being coterminous with the distal end of the outer coil; c. a core wire having a distal and proximal end fixedly attached to said distal and proximal end respectively of said outer coil located within said second lumen; d. a distal tip marker; and e. means sealingly attached to said proximal end of said flexible sheath for inserting a pressurized fluid into said second lumen wherein said outer coil is space wound from the distal end of said flexible sheath to said distal end of said outer coil.
Claim 2
Dependent Claim
144 words
An infusion guide wire having a proximal end and a distal end comprising: a. an outer coil having a proximal end and a distal end and having a first lumen; b. a flexible sheath having a proximal end and a distal end and having a second lumen located within said first lumen, said flexible sheath not being coterminous with the distal end of the outer coil; c. a core wire having a distal and proximal end fixedly attached to said distal and proximal end respectively of said outer coil located within said second lumen; d. a distal tip marker; and e. means sealingly attached to said proximal end of said flexible sheath for inserting a pressurized fluid into said second lumen wherein said outer coil is space wound from the distal end of said flexible sheath to said distal end of said outer coil.
Claim 3
Dependent Claim
28 words
An infusion guide wire according to claim 1 wherein said outer coil is close wound for the majority of its length between said proximal and said distal end.
Claim 4
Dependent Claim
17 words
An infusion guide wire according to claim 2 further comprising a capillary tube within said second lumen.
Claim 5
Dependent Claim
14 words
An infusion guide wire according to claim 1 wherein said outer coil is quadrifilar.
Claim 6
Dependent Claim
15 words
An infusion guide wire according to claim 1 wherein said outer sheath is single filar.
Claim 7
Dependent Claim
33 words
An infusion guide wire according to claim 1 further comprising an inner coil having a third lumen located within said first lumen wherein said outer coil and said inner coil are oppositely wound.
Claim 8
Dependent Claim
18 words
An infusion guide wire according to claim 6 wherein said inner coil is located within said second lumen.
Claim 9
Dependent Claim
18 words
An infusion guide wire according to claim 6 wherein said flexible sheath is located within said third lumen.
Claim 10
Dependent Claim
18 words
An infusion guide wire according to claim 2 wherein said flexible sheath further comprises an imbedded metallic reinforcement.
Claim 11
Dependent Claim
18 words
An infusion guide wire according to claim 9 wherein said embedded metallic reinforcement further comprises a spring coil.
Claim 12
Dependent Claim
18 words
An infusion guide wire according to claim 9 wherein said embedded metallic reinforcement further comprises a braided structure.
Claim 13
Dependent Claim
28 words
An infusion guide wire according to claim 2 wherein said proximal end of the said flexible sheath is not coterminous with said proximal end of said outer coil.
Claim 14
Dependent Claim
31 words
An infusion guide wire according to claim 12 wherein said outer coil is space wound from said proximal end of said flexible sheath to said proximal end of said outer coil.
Claim 15
Dependent Claim
31 words
An infusion guide wire according to claim 6 wherein said inner coil is unifilar or multifilar, and wherein said inner coil is comprised of round, rectangular and/or triangular configured wire structure.
Claim 16
Dependent Claim
34 words
An infusion guide wire according to claim 9 wherein said inner coil in coterminous with said outer coil and is attached in junction with the outer coil at the said distal and proximal ends.
Claim 17
Dependent Claim
30 words
An infusion guide wire according to claim 6 wherein said inner coil is space wound at the said distal and proximal ends to allow for passage of fluid through interstices.
Claim 18
Dependent Claim
41 words
An infusion guide wire according to claim 1 wherein said distal tip marker is a coil and consists of a radiopaque material which is positioned over the distal end of said core wire and within said inner or outer coil lumens.
Claim 19
Dependent Claim
36 words
An infusion guide wire according to claim 17 wherein said radiopaque distal tip marker is positively attached at the distal end of said infusion guide wire concurrent with said core wire, inner coil, or outer coil.
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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) | 1997-12-26 | 1998-06-27 | 1998-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-26 | 2002-06-27 | 2002-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-26 | 2006-06-27 | 2006-12-27 | $7700.00 | Window Closed / Lapsed |