US3590820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aspirator tip
Assignee: Individual
•
Filing: 1969-02-06
•
Granted: 1971-07-06
•
Expires: 1989-02-06
Abstract
Abstract A hollow cylindrical aspirator tip closed at one end and including radially extending angularly spaced-apart primary passages extending therethrough adjacent the closed end thereof and relief passages in communication with the primary passages to prevent drawing sufficient vacuum through the hollow cylindrical tip in the primary passages to damage membranes in contact with the tip over the outer ends of the passages. The relief passages are of a smaller diameter than the primary passages to facilitate maintaining a vacuum in the primary passages at all times. Longitudinally extending slots are provided in communication with each of the relief passages having a cross section less than that of the relief passages to permit draining of fluid into the relief passages while maintaining a vacuum therein.
Inventors
- 👤 Samuel A Nehra
- 👤 Oscar C Saad
- 👤 Raymond E Labrecque
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:12
CPC Classifications
A; A61; A61M; A61M1/00; A61M1/84
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
129 words
An aspirator tip comprising a hollow cylindrical member having one closed end, radially extending primary passages through the aspirator tip adjacent the closed end thereof, means operably associated with the primary passages for relieving vacuum drawn in the primary passages to prevent damage to mucous membrane or the like in contact with the aspirator tip over the outer end of the primary passages therethrough on drawing a vacuum through the tip including longitudinally extending relief passages in the tip communicating with the primary passages therein and further including longitudinally extending slots between the exterior surfaces of the tip and the relief passages in the tip to permit drawing of fluid through the slots into the relief passages and subsequently into the interior of the tip through the primary passages.
Claim 2
Dependent Claim
129 words
An aspirator tip comprising a hollow cylindrical member having one closed end, radially extending primary passages through the aspirator tip adjacent the closed end thereof, means operably associated with the primary passages for relieving vacuum drawn in the primary passages to prevent damage to mucous membrane or the like in contact with the aspirator tip over the outer end of the primary passages therethrough on drawing a vacuum through the tip including longitudinally extending relief passages in the tip communicating with the primary passages therein and further including longitudinally extending slots between the exterior surfaces of the tip and the relief passages in the tip to permit drawing of fluid through the slots into the relief passages and subsequently into the interior of the tip through the primary passages.
Claim 3
Dependent Claim
29 words
Structure as set forth in claim 1, wherein the slots have a smaller transverse cross section than the relief passages to facilitate maintaining a vacuum in the relief passages.
Claim 4
Dependent Claim
98 words
An aspirator tip comprising an extruded hollow tubular member and an end cap including a hemispherical portion and a reduced-diameter cylindrical portion adapted to extend within an end of the extruded tubular member to close one end thereof, radially extending primary paSsages through the aspirator tip adjacent the closed end thereof and means operably associated with the primary passages for relieving vacuum drawn in the primary passages to prevent damage to mucous membrane or the like in contact with the aspirator tip over the outer end of the primary passages therethrough on drawing a vacuum through the tip.
Claim 5
Dependent Claim
98 words
An aspirator tip comprising an extruded hollow tubular member and an end cap including a hemispherical portion and a reduced-diameter cylindrical portion adapted to extend within an end of the extruded tubular member to close one end thereof, radially extending primary paSsages through the aspirator tip adjacent the closed end thereof and means operably associated with the primary passages for relieving vacuum drawn in the primary passages to prevent damage to mucous membrane or the like in contact with the aspirator tip over the outer end of the primary passages therethrough on drawing a vacuum through the tip.
Claim 6
Dependent Claim
28 words
Structure as set forth in claim 3, wherein the end cap includes the primary passages partly in the hemispherical portion thereof and partly in the cylindrical portion thereof.
Claim 7
Dependent Claim
64 words
An aspirator tip comprising a tubular member having radially extending primary passages therethrough, longitudinally extending relief passages therein intersecting said primary passages, longitudinally extending slots between the exterior surface of the tip and the longitudinal relief passages in the tip to permit drawing of fluid through the slots into the relief passages and subsequently into the interior of the tip through the primary passages.
Claim 8
Dependent Claim
64 words
An aspirator tip comprising a tubular member having radially extending primary passages therethrough, longitudinally extending relief passages therein intersecting said primary passages, longitudinally extending slots between the exterior surface of the tip and the longitudinal relief passages in the tip to permit drawing of fluid through the slots into the relief passages and subsequently into the interior of the tip through the primary passages.
Claim 9
Dependent Claim
29 words
Structure as set forth in claim 5 wherein the slots have a smaller transverse cross section than the relief passages to facilitate maintaining a vacuum in the relief passages.
Claim 10
Dependent Claim
46 words
Structure as set forth in claim 5 wherein the aspirator tip is constructed of two separate pieces including an extruded tubular member and an end cap including a hemispherical portion and a reduced-diameter cylindrical portion adapted to extend within an end of the extruded tubular member.
Claim 11
Dependent Claim
28 words
Structure as set forth in claim 7 wherein the end cap includes the primary passages partly in the hemispherical portion thereof and partly in the cylindrical portion thereof.
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) | 1974-07-05 | 1975-01-04 | 1975-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-05 | 1979-01-04 | 1979-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-05 | 1983-01-04 | 1983-07-06 | $7700.00 | Window Closed / Lapsed |