US5344412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microbore catheter with side port(s)
Assignee: Kendall Co
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Filing: 1993-03-01
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Granted: 1994-09-06
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Expires: 2013-03-01
Abstract
Abstract Disclosed are microbore catheters for spinal anesthesia having one or more side ports provided by a laser beam.
Inventors
- 👤 Amy M. Wendell
- 👤 James R. Gross
- 👤 James P. Cianci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:39
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
155 words
The method of making a microbore spinal catheter comprising the steps of: (1) forming a catheter comprising an elongated flexible wall material having opposed distal and proximal ends and having a single lumen extending between the ends and terminating with an opening at its distal end, the catheter having an outer diameter no greater than about 0.022 inch; and (2) thereafter forming at the distal end proximal to the distal end opening at least one sideport characterized as being spherical and substantially free of any burring or cratering by contacting the catheter wall material with a laser beam selected with respect to the catheter wall material so that: (a) the radiation emitted by the laser is in a wavelength such that little or no radiation is transmitted through the target catheter wall material; and (b) the radiation does not emit enough heat to cause the target catheter wall material to melt rather than being vaporized.
Claim 2
Independent Claim
155 words
The method of making a microbore spinal catheter comprising the steps of: (1) forming a catheter comprising an elongated flexible wall material having opposed distal and proximal ends and having a single lumen extending between the ends and terminating with an opening at its distal end, the catheter having an outer diameter no greater than about 0.022 inch; and (2) thereafter forming at the distal end proximal to the distal end opening at least one sideport characterized as being spherical and substantially free of any burring or cratering by contacting the catheter wall material with a laser beam selected with respect to the catheter wall material so that: (a) the radiation emitted by the laser is in a wavelength such that little or no radiation is transmitted through the target catheter wall material; and (b) the radiation does not emit enough heat to cause the target catheter wall material to melt rather than being vaporized.
Claim 3
Dependent Claim
19 words
The method as defined in claim 1 wherein the laser is a cold laser emitting in the ultraviolet range.
Claim 4
Dependent Claim
24 words
The method as defined in claim 1 wherein the laser is an Excimer laser exhibiting a wavelength of on the order of 193 nm.
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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) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |