US5209734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous spinal anesthesia administering apparatus
Assignee: The Brigham and Women's Hospital Inc
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Filing: 1989-03-21
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Granted: 1993-05-11
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Expires: 2009-03-21
Abstract
Abstract A continuous spinal anesthesia administering apparatus is disclosed which comprises a polymeric microcatheter with a reinforcing stylet. A method for administering anesthesia to a patient utilizing this apparatus is also disclosed, as is a catheter kit containing this apparatus.
Inventors
- 👤 Ronald J. Hurley
- 👤 Kenneth W. Larson
- 👤 Douglas F. Reed
- 👤 Donald H. Lambert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:16
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0012; A61M25/0043; A61M25/005; A61B; A61B17/00; A61B17/34; A61B17/3401; A61M25/0021; A61M2025/0042; A61M2025/0063
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
51 words
A continuous spinal anesthesia administering apparatus comprising a polymeric microcatheter having an external diameter less than about 0.0130 inch (0.330 mm) and further comprising a reinforcing member extending substantially the length of the microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic.
Claim 2
Dependent Claim
51 words
A continuous spinal anesthesia administering apparatus comprising a polymeric microcatheter having an external diameter less than about 0.0130 inch (0.330 mm) and further comprising a reinforcing member extending substantially the length of the microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic.
Claim 3
Dependent Claim
18 words
The apparatus according to claim 1 wherein said reinforcing member is bonded to the wall of said microcatheter.
Claim 4
Dependent Claim
25 words
The apparatus according to claim 1 wherein said microcatheter has an external diameter of about 0.0085 inch (0.216 mm) to about 0.0107 inch (0.272 mm).
Claim 5
Dependent Claim
25 words
The apparatus according to claim 3 wherein said microcatheter has an internal diameter of about 0.0071 inch (0.180 mm) to about 0.0091 inch (0.230 mm).
Claim 6
Dependent Claim
45 words
The apparatus according to claim 4 wherein said reinforcing member comprises a stainless steel wire of about 0.0025 inch (0.063 mm) to about 0.0035 inch (0.089 mm) diameter with a fluoropolymer coating of about 0.0010 inch (0.025 mm) to about 0.0020 inch (0.051 mm) thickness.
Claim 7
Dependent Claim
18 words
The apparatus according to claim 5 additionally comprising means for connecting said microcatheter to an anesthesia injecting means.
Claim 8
Dependent Claim
14 words
The apparatus according to claim 6 wherein said connecting means comprises a Tuohy-Borst adapter.
Claim 9
Dependent Claim
34 words
The apparatus according to claim 7 additionally comprising a spinal needle of about 24 gauge (0.508 mm O.D.) to about 26 gauge (0.403 mm O.D.), through which said microcatheter is inserted into a patient.
Claim 10
Independent Claim
19 words
The apparatus according to claims 5, 6, 7 or 8 wherein said microcatheter is fabricated of an aromatic polyimide.
Claim 11
Dependent Claim
20 words
The apparatus of claim 1, wherein said reinforcing member has a diameter of less than about 0.006 inch (0.152 mm).
Claim 12
Dependent Claim
27 words
The apparatus of claim 1, wherein said reinforcing member comprises a wire having a diameter of about 0.0025 inch (0.063 mm) to about 0.0035 inch (0.089 mm).
Claim 13
Dependent Claim
18 words
The apparatus according to claim 1 wherein said reinforcing member is imbedded in the wall of said microcatheter.
Claim 14
Dependent Claim
79 words
A catheter kit for the continuous administration of anesthesia to a patient comprising, in a sterile, sealed package; a polymeric microcatheter having a lumen extending throughout its length, the microcatheter including a metal wire reinforcing member extending substantially the length of the microcatheter wholly within the lumen of said microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic, and a spinal needle through which the said microcatheter may be inserted.
Claim 15
Dependent Claim
79 words
A catheter kit for the continuous administration of anesthesia to a patient comprising, in a sterile, sealed package; a polymeric microcatheter having a lumen extending throughout its length, the microcatheter including a metal wire reinforcing member extending substantially the length of the microcatheter wholly within the lumen of said microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic, and a spinal needle through which the said microcatheter may be inserted.
Claim 16
Dependent Claim
19 words
The catheter kit according to claim 13 wherein said reinforcing member is bonded to the wall of said microcatheter.
Claim 17
Dependent Claim
19 words
The catheter kit according to claim 13 additionally comprising means for connecting said microcatheter to an anesthesia injecting means.
Claim 18
Dependent Claim
15 words
The catheter kit according to claim 15 wherein said connecting means comprises a Tuohy-Borst adapter.
Claim 19
Dependent Claim
26 words
The catheter kit according to claim 16 wherein said microcatheter has an external diameter of about 0.0085 inch (0.216 mm) to about 0.0107 inch (0.272 mm).
Claim 20
Dependent Claim
26 words
The catheter kit according to claim 17 wherein said microcatheter has an internal diameter of about 0.0071 inch (0.180 mm) to about 0.0091 inch (0.230 mm).
Claim 21
Dependent Claim
46 words
The catheter kit according to claim 18 wherein said reinforcing member comprises a stainless steel wire of about 0.0025 inch (0.063 mm) to about 0.0035 inch (0.089 mm) diameter with a fluoropolymer coating of about 0.0010 inch (0.025 mm) to about 0.0020 inch (0.051 mm) thickness.
Claim 22
Dependent Claim
16 words
The catheter kit according to claim 19 wherein said microcatheter is fabricated of an aromatic polyimide.
Claim 23
Dependent Claim
20 words
The kit according to claim 13 wherein said microcatheter has an external diameter less than about 0.0130 inch (0.330 mm).
Claim 24
Dependent Claim
21 words
The catheter kit of claim 13, wherein said reinforcing member has a diameter of less than about 0.006 inch (0.152 mm).
Claim 25
Dependent Claim
19 words
The catheter kit according to claim 13 wherein said reinforcing member is imbedded in the wall of said microcatheter.
Claim 26
Independent Claim
55 words
A device for administering a medicament to a patient comprising a polymeric microcatheter having an external diameter of less than about 0.0130 inch (0.330 mm) and a metal wire reinforcing member extending substantially the length of the microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic.
Claim 27
Independent Claim
55 words
A device for administering a medicament to a patient comprising a polymeric microcatheter having an external diameter of less than about 0.0130 inch (0.330 mm) and a metal wire reinforcing member extending substantially the length of the microcatheter and fixed so that the reinforcing member is maintained within the microcatheter during infusion of the anesthetic.
Claim 28
Dependent Claim
30 words
The apparatus according to claim 24 wherein said reinforcing member comprises a stainless steel wire having a diameter of about 0.0025 inch (0.063 mm) to about 0.0035 inch (0.089 mm).
Claim 29
Dependent Claim
13 words
The apparatus of claim 24, said microcatheter being fabricated of an aromatic polyimide.
Claim 30
Dependent Claim
18 words
The apparatus of claim 24, wherein said microcathter is attached to a source of medicament to be administered.
Claim 31
Dependent Claim
21 words
The device according to claim 24 wherein said reinforcing member is bonded to the interior of the wall of said microcatheter.
Claim 32
Dependent Claim
18 words
The device according to claim 24 wherein said reinforcing member is imbedded in the wall of said microcatheter.
Claim 33
Dependent Claim
19 words
The device according to claim 24 in which said reinforcing member is bonded to the wall of said microcatheter.
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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) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |