US3800788A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antral catheter for reduction of fractures
Assignee: Individual
•
Filing: 1972-07-12
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Granted: 1974-04-02
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Expires: 1992-07-12
Abstract
Abstract An inflatable catheter for insertion into the maxillary sinus cavity via the nasal opening, which when inflated with sterile water or air will exert pressure on the bone surrounding the sinus and will move intruding bone portions such as may be present upon fracture of the maxilla or other bones to reduce such fracture. The catheter head is formed of a pyramidal shape as to conform to the generally triangular configuration of the maxillary sinus.
Inventors
- 👤 N White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:04
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/24; A61B17/56; A61B17/58; A61B17/88; A61B17/8866; A61B2017/00535; A61B2017/00557
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
An inflatable one-piece antral catheter for use in the reduction of fractures adjacent the maxillary sinus, including a tubular body portion having a longitudinally extending lumen therein, an integral inflatable elastic balloon on the distal end of said body portion and in communication therewith, said balloon being conical in shape in its flaccid condition, the base of said conical balloon being adjacent the distal end of the body portion, and an integral noninflatable semi-rigid tip means forming the apex of said cone to facilitate handling and insertion of the balloon portion into said sinus cavity, said balloon portion being adapted upon expansion by fluid pressure to exert even presure against the walls of the generally pyramidal shaped sinus cavity.
Claim 2
Dependent Claim
119 words
An inflatable one-piece antral catheter for use in the reduction of fractures adjacent the maxillary sinus, including a tubular body portion having a longitudinally extending lumen therein, an integral inflatable elastic balloon on the distal end of said body portion and in communication therewith, said balloon being conical in shape in its flaccid condition, the base of said conical balloon being adjacent the distal end of the body portion, and an integral noninflatable semi-rigid tip means forming the apex of said cone to facilitate handling and insertion of the balloon portion into said sinus cavity, said balloon portion being adapted upon expansion by fluid pressure to exert even presure against the walls of the generally pyramidal shaped sinus cavity.
Claim 3
Dependent Claim
17 words
An inflatable catheter as defined in claim 1, wherein suture-receiving means is formed in the tip means.
Claim 4
Dependent Claim
25 words
An inflatable catheter as defined in claim 1, wherein the wall thickness of said balloon is less than the wall thickness of said body portion.
References Cited (Backward Citations)
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Cited
US2179964A
Cited
US2525183A
Cited
US2493326A
Cited
US2691985A
Cited
US3049125A
Cited
US3176690A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |