Patent US4624658A successfully refreshed from Google Patents.
US4624658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Distensible syringe and sensor for injectors
Assignee: Intermedicat GmbH
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Filing: 1984-11-05
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Granted: 1986-11-25
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Expires: 2004-11-05
Abstract
Abstract A syringe for an injector utilizes a cylinder having a deformable wall portion in the outlet end. Excessive pressure within the syringe cylinder, or contact with the syringe piston at the end of its stroke distends the deformable wall portion of the cylinder, actuating a sensor which provides a signal.
Inventors
- 👤 Robert Mardorf
- 👤 Friedrich von der Haar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:36
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/145; A61M5/1452; A61M5/1456; A61M5/168; A61M5/16831; A61M5/16854; Y; Y10; Y10S; Y10S128/00; Y10S128/01
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
79 words
A syringe for injectors, comprising: a cylinder having a deformable wall portion, a longitudinal wall, a first and a second end, an outlet end wall dsposed at said first end, and a neck disposed on said outlet end wall; a piston, disposed in said cylinder; and, means, disposed in contact with a region of said cylinder which moves upon distension of said deformable wall portion, for providing an output signal proportional to said distension of said deformable wall portion.
Claim 2
Dependent Claim
79 words
A syringe for injectors, comprising: a cylinder having a deformable wall portion, a longitudinal wall, a first and a second end, an outlet end wall dsposed at said first end, and a neck disposed on said outlet end wall; a piston, disposed in said cylinder; and, means, disposed in contact with a region of said cylinder which moves upon distension of said deformable wall portion, for providing an output signal proportional to said distension of said deformable wall portion.
Claim 3
Dependent Claim
44 words
An apparatus as in claim 1 wherein said proportional output signal providing means comprises a sensing pin, disposed in contact with said region of said cylinder which moves upon distension of said deformable wall portion; and, a position sensor, coupled to said sensing pin.
Claim 4
Dependent Claim
36 words
An apparatus as in claim 1 wherein said deformable wall portion is disposed in said outlet end wall, and wherein said proportional output signal providing means is disposed in contact with said neck of said cylinder.
Claim 5
Dependent Claim
35 words
An apparatus as in claim 3 wherein said proportional output signal providing means comprises a sensing pin, disposed in contact with said neck of said cylinder; and, a position sensor, coupled to said sensing pin.
Claim 6
Dependent Claim
34 words
An apparatus as in claim 1 wherein said deformable wall portion is disposed in said longitudinal wall, and wherein said proportional output signal providng means is disposed in contact with said deformable wall portion.
Claim 7
Dependent Claim
34 words
An apparatus as in claim 5 wherein said proportional output signal providing means comprises a sensing pin, disposed in contact with said deformable wall portion; and, a position sensor, coupled to said sensing pin.
Claim 8
Dependent Claim
81 words
A syringe for injectors, comprising: a cylinder having a longitudinal wall, a deformable wall portion disposed in said longitudinal wall, a first and a second end, an outlet end wall disposed at said first end, and a neck disposed on said outlet end wall; and, a piston disposed in said cylinder, said deformable wall portion extending into an interior of said cylinder in a path of said piston so that upon contact with said piston said deformable wall portion is distended.
Claim 9
Dependent Claim
81 words
A syringe for injectors, comprising: a cylinder having a longitudinal wall, a deformable wall portion disposed in said longitudinal wall, a first and a second end, an outlet end wall disposed at said first end, and a neck disposed on said outlet end wall; and, a piston disposed in said cylinder, said deformable wall portion extending into an interior of said cylinder in a path of said piston so that upon contact with said piston said deformable wall portion is distended.
Claim 10
Dependent Claim
31 words
An apparatus as in claim 7 further comprising means, disposed in contact with said deformable wall portion, for providing an output signal in response to distension of said deformable wall portion.
Claim 11
Dependent Claim
33 words
An apparatus as in claim 8 wherein said output signal providing means comprises a sensing pin, disposed in contact with said deformable wall portion; and, a position sensor, coupled to said sensing pin.
Claim 12
Dependent Claim
35 words
An apparatus as in claim 8 wherein said output signal providing means comprises means, disposed in contact with said deformable wall portion, for providing an output signal proportional to distension of said deformable wall portion.
Claim 13
Dependent Claim
34 words
An apparatus as in claim 10 wherein said proportional output signal providing means comprises a sensing pin, disposed in contact with said deformable wall portion; and, a position sensor, coupled to said sensing pin.
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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |