US3722512A
Expired / Lapsed
US
⏱️ 0.0 years remaining
One hand injector
Assignee: LINCOLN LABORATORIES Inc
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Filing: 1970-08-05
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Granted: 1973-03-27
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Expires: 1990-08-05
Abstract
Abstract A hypodermic syringe is provided by the combination of an elongated handle which longitudinally supports an elongated cylinder that is slidable along the handle, with the injector needle being connected to a piston that is fixed with respect to the handle and is located within the cylinder. An abutment flange is located on the handle to limit rearward movement of the elongated cylinder to prevent the cylinder from disengaging the piston and to limit the amount of liquid that can be injested into the cylinder. The handle has a split portion for releasable engagement with the mounting for the needle.
Inventors
- 👤 G Hein
- 👤 R Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:26
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/24; A61M5/2422; A61M5/2429
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
198 words
In a one-hand operated injector device of the type that includes elongated handle means for slidably supporting an elongated cylinder and for non-slidably supporting elongated piston means that is cooperatively arranged with the cylinder for effecting injections of material stored in the cylinder or ingestion of material into the cylinder, the improvement comprising the piston means having a bore therethrough, the cylinder being slidably mounted on the holder means and having an open end for receiving thereinto the piston means and a closed end, attachment means on one end of the holder means for attaching the piston means to the holder means and being in alignment with and in proximity to the cylinder''s open end, a hollow needle attached to the piston means and in communication with the bore; and an abutment flange located on the handle means in alignment with the cylinder''s path of travel to limit sliding movement of the elongated cylinder in one direction relative to the piston means, the flange being spaced rearwardly from the closest end of the piston means a predetermined distance that is less than the length of the cylinder to prevent the cylinder from inadvertently disengaging from the piston means.
Claim 2
Dependent Claim
198 words
In a one-hand operated injector device of the type that includes elongated handle means for slidably supporting an elongated cylinder and for non-slidably supporting elongated piston means that is cooperatively arranged with the cylinder for effecting injections of material stored in the cylinder or ingestion of material into the cylinder, the improvement comprising the piston means having a bore therethrough, the cylinder being slidably mounted on the holder means and having an open end for receiving thereinto the piston means and a closed end, attachment means on one end of the holder means for attaching the piston means to the holder means and being in alignment with and in proximity to the cylinder''s open end, a hollow needle attached to the piston means and in communication with the bore; and an abutment flange located on the handle means in alignment with the cylinder''s path of travel to limit sliding movement of the elongated cylinder in one direction relative to the piston means, the flange being spaced rearwardly from the closest end of the piston means a predetermined distance that is less than the length of the cylinder to prevent the cylinder from inadvertently disengaging from the piston means.
Claim 3
Dependent Claim
63 words
An injector device as set forth in claim 1, wherein a forward portion of the handle means spaced distally of the abutment flange has attachment means thereon for releasable connection to the piston means, and the forward end section of the elongated handle means is longitudinally split to provide flexibility that accommodates attachment and release between the attachment means and the piston means.
Claim 4
Dependent Claim
60 words
An injector device as set forth in claim 1, wherein said piston means is a unitary body formed of a plastic material that provides an axial bore Therethrough, the rearward end of said unitary body providing a cylindrical head for entry into the cylinder, and the forward end of the body providing means for attachment of an injection needle thereto.
Claim 5
Dependent Claim
21 words
An injector device in claim 1, wherein the sides of the handle are undulated to provide a comfortable hand gripping surface.
Claim 6
Dependent Claim
46 words
An injector device as set forth in claim 1, wherein the cylinder carries a thumb tab that is arcuately shaped to provide spaced lower edge surfaces which lie closely adjacent surfaces of the handle means to restrain rotation of the cylinder relative to the handle means.
Claim 7
Dependent Claim
42 words
An injector device as set forth in claim 1, wherein the elongated handle is numerically calibrated to measure the amount of injectible material in the cylinder, the calibration being located between the abutment flange and the closest end of the piston means.
Claim 8
Dependent Claim
46 words
An injector device as set forth in claim 1, wherein the handle means and piston means are each a unitary body molded of plastic and are each provided with interengaging elements of V-shape which cooperate to hold the piston means firmly assembled on the handle means.
Claim 9
Dependent Claim
48 words
An injector device as set forth in claim 7, wherein the portion of the handle means with said V-shape element thereon is rendered somewhat radially flexible by longitudinally segmenting the handle means, thereby accommodating interengagement and release of the interengaging elements on the handle means and piston means.
Claim 10
Dependent Claim
24 words
A device as in claim 1 wherein the piston means are non-metallic to increase separation of liquid within the cylinder from the metal needle.
Claim 11
Dependent Claim
34 words
A device as in claim 1 wherein the piston means are formed of a translucent plastic having a longitudinal bore therethrough which permits visual observation of liquid in the bore of the piston means.
Claim 12
Dependent Claim
75 words
An injector device as in claim 1 wherein the piston means is elongated and has a longitudinal bore therethrough, a metal injection needle secured to the end of the piston means distal from the end that cooperates with the cylinder, and the bore in the piston means being of greater cross-section than the size of the passage through the injection needle so as to provide for achieving ram effect in usage of the injector device.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |