Patent US3896804A successfully refreshed from Google Patents.
US3896804A
Expired / Lapsed
US
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Catheter for submucous administration of local anesthetics in obtaining paracervical block
Assignee: Astra Sjuco AB
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Filing: 1973-11-13
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Granted: 1975-07-29
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Expires: 1993-11-13
Abstract
Abstract A catheter for submucous administration of a local anesthetic agent in obtaining paracervical block, comprising a tabular device having a rearwardly directed collar at one end and intended to be applied submucously, which collar encircles the entire circumference of the tube. The collar may be provided with 3 to 6 slits, and be inclined at an angle of 30* to 45* to the axis of the tube.
Inventors
- 👤 Fred Vage Gunnar Ekbladh
- 👤 Sven Lennart Steen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/42; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
An improved catheter the forward end of which is adapted to be inserted submucously into the cervix for administration of a local anesthetic agent in obtaining paracervical block, said catheter comprising a tube which is provided near its forward end with a collar extending away from the tube and toward the rear of the tube, said collar encircling the whole circumference of the tube and being provided with axially directed slits, the distance from the forward end of the catheter to the collar being such that the catheter can be mounted submucously in the cervix with the collar imbedded therein.
Claim 2
Dependent Claim
100 words
An improved catheter the forward end of which is adapted to be inserted submucously into the cervix for administration of a local anesthetic agent in obtaining paracervical block, said catheter comprising a tube which is provided near its forward end with a collar extending away from the tube and toward the rear of the tube, said collar encircling the whole circumference of the tube and being provided with axially directed slits, the distance from the forward end of the catheter to the collar being such that the catheter can be mounted submucously in the cervix with the collar imbedded therein.
Claim 3
Dependent Claim
21 words
A catheter according to claim 1, characterized in that the number of slits is at least three, suitably four to six.
Claim 4
Dependent Claim
27 words
A catheter according to any of claims 1, characterized in that the coLlar forms an angle of 30* to 45* with the longitudinal axis of the catheter.
Claim 5
Dependent Claim
16 words
A catheter according to claim 1 wherein the number of slits is from four to six.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |