Patent EP0265876A2 successfully refreshed from Google Patents.
EP0265876A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Snap-on vernier syringe
Assignee: Habley Medical Technology Corp
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Filing: 1987-10-23
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Granted: —
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Expires: 2007-10-23
Abstract
Abstract A linear-to-vernier syringe (1) is disclosed by which a volume of material may be controllably and accurately dispensed. A piston supporting collar (4) may be securely snapped into releaseable engagement with a conventional, disposable syringe cylinder (8) to complete the syringe assembly, whereby the conventional syringe cylinder is converted into a precisely accurate pipetting cylinder to control the infusion of highly potent, dosage sensitive, radioactive, or expensive drugs, and the like, without requiring any modification to the cylinder. The syringe assembly (1) is particularly adapted to permit rapid switching between freely rotated and incrementally rotated modes of operation, whereby a predetermined volume of material may be selectively imparted from the syringe cylinder, either continuously or in discrete and precisely calibrated increments.
Inventors
- 👤 Terry M. Haber
- 👤 Clark B. Foster
- 👤 John A. Lewis, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 18:31
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31565; A61M5/31576; A61M5/31583; A61M5/31586; A61M5/3159; A61M5/31593; A61M5/31595; A61M5/3129; A61M5/3137; A61M2005/3139; A61M5/31533; A61M5/31545; A61M5/31548; A61M5/3155; A61M5/31551; A61M5/3156; A61M5/31561
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
154 words
A syringe assembly (1) adapted to dispense a measured volume of material either freely or in discrete, calibrated steps, said syringe assembly characterized by: a cylinder (8) from which a volume of material can be dispensed; piston means (2) to be rotated in and movable axially through said cylinder for dispensing material therefrom, said piston means having a groove (3) extending longitudinally therealong; and locking means (42) aligned to be movable into and removable from the longitudinally extending groove of said piston means to selectively control the movement of said piston means through sayd cylinder; said piston means being rotated continuously and moved axially through said cylinder to freely dispense material therefrom when said locking means is removed from said groove, or said piston means being rotated incrementally and moved axially through said cylinder to dispense material therefrom in discrete steps when said locking means is successively removed from and returned to said groove.
Claim 2
Dependent Claim
154 words
A syringe assembly (1) adapted to dispense a measured volume of material either freely or in discrete, calibrated steps, said syringe assembly characterized by: a cylinder (8) from which a volume of material can be dispensed; piston means (2) to be rotated in and movable axially through said cylinder for dispensing material therefrom, said piston means having a groove (3) extending longitudinally therealong; and locking means (42) aligned to be movable into and removable from the longitudinally extending groove of said piston means to selectively control the movement of said piston means through sayd cylinder; said piston means being rotated continuously and moved axially through said cylinder to freely dispense material therefrom when said locking means is removed from said groove, or said piston means being rotated incrementally and moved axially through said cylinder to dispense material therefrom in discrete steps when said locking means is successively removed from and returned to said groove.
Claim 3
Dependent Claim
82 words
The syringe assembly recited in claim 1, further characterized by collar means (4) having a hole (9) for receiving said piston means (2) therethrough, said collar means connected to said cylinder (8) to support and align said piston means for movement through said cylinder, and said piston means and the hole in said collar means being threaded, such that a rotation of said piston means relative to said collar means causes a corresponding axial movement of said piston means through said cylinder.
Claim 4
Dependent Claim
58 words
The syringe assembly recited in claims 1 or 2, wherein said locking means to control the movement of said piston means (2) is a detent tooth (42) that is moveable into and out of said groove (3), the position of said detent tooth relative to said groove controlling the rotation and corresponding axial movement of said piston means.
Claim 5
Dependent Claim
53 words
The syringe assembly recited in claim 3, said collar means (4) characterized by a detent arm (38) having said detent tooth (42) located at one end thereof and being mounted for rotation within said collar means for moving said detent tooth into and out of the groove (3) in said piston means (2).
Claim 6
Dependent Claim
27 words
The syringe assembly recited in claim 4, wherein said detent arm (38) is located in and rotatable through a cavity (39) formed in said collar means (4).
Claim 7
Dependent Claim
94 words
The syringe assembly recited in claim 4, said collar means further characterized by stop means (50) being moveable to a location between said detent tooth (42) and said piston means (2) to prevent the return of said tooth to said groove (3) after said detent arm (38) has rotated said detent tooth out of said groove, so that said piston means may be continuously rotated and axially moved through said cylinder (8) until said stop means is moved out of the way of said detent tooth and said tooth is returned to said groove.
Claim 8
Dependent Claim
102 words
The syringe assembly recited in claim 6, said collar means (4) further characterized by a selector switch (34) interconnected with said stop means (50) and being manually accessible so as to be moved to either of a first or second switch position, the movement of said selector switch to the first switch position causing a corresponding movement of said stop means to a location between said detent tooth (42) and said piston means (2), and the movement of said selector switch to the second switch position causing a corresponding movement of said stop means out of the way of said detent tooth.
Claim 9
Dependent Claim
60 words
The syringe assembly recited in claim 4, said collar means (4) further characterized by a push button (44) interconnected with the second end of said detent arm (38) and being manually accessible for causing the rotation of said detent arm and the movement of said detent tooth (42) into and out of the groove (3) in said piston means (2).
Claim 10
Dependent Claim
111 words
The syringe assembly recited in claim 8, said collar means (4) further characterized by a compression spring (46) interconnected with said push button (44) for controlling the rotation of said detent arm (38), a depression of said push button against the normal bias of said spring causing a rotation of said detent arm and a movement of said detent tooth (42) out of the groove (3) in said piston means (2), so that said piston means may be rotated and moved axially a corresponding distance through said cylinder (8) for dispensing a particular volume of material until said push button is released and said detent tooth is returned to said groove.
Claim 11
Dependent Claim
91 words
The syringe assembly recited in claim 3, further characterized by compression spring means (74) for biasing said detent tooth (76) for movement into and out of said groove (3) depending upon whether said spring means is compressed or relaxed, push button means (70, 72) being manually accessible and interfaced with said spring means for alternatingly compressing and relaxing said spring means, and releasable locking means (80) to prevent the movement of said detent tooth out of said groove when said push button means is operated and said spring means is compressed.
Claim 12
Dependent Claim
31 words
The syringe assembly recited in claim 10, wherein said detent tooth (76), said spring means (74), and said push button means (70, 72) are integrally connected as a single continuous piece.
Claim 13
Dependent Claim
209 words
The syringe assembly recited in claim 2, said collar means (4) further characterized by: at least one exterior face (22); an interior core (24) spaced from said face; an access opening (20) formed in said face through which an end (16) of said cylinder (8) may be inserted, said collar means being removably connected to said cylinder when said cylinder is inserted through said access opening and rotated through the space between said exterior face and said interior core; a catch member (26); a seat (28) formed in said interior core into which said catch member may be moved; and position control means (18) communicating with said catch member and extending through said collar means to a manually accessible position at which to control the movement of said catch member relative to said seat, said position control means being operable to move said catch member either into said seat in said core to permit the rotation of said cylinder and the connection or disconnection of said collar means to or from said cylinder or out of said seat and into the space between said exterior face and said interior core to block the rotation of said cylinder end and prevent the disconnection of said collar means from said cylinder.
Claim 14
Dependent Claim
99 words
The syringe assembly recited in claim 12, wherein said position control means includes a pin (18) connected to said catch member (26) and movable through a slot (19) formed in said collar means (4), the movement of said pin in one direction through said slot causing a corresponding movement of said catch member into said seat (28), and the movement of said pin in an opposite direction through said slot causing a corresponding movement of said catch member out of said seat and into the space between the exterior face (22) and interior core (24) of said collar means.
References Cited (Backward Citations)
No citation records indexed.
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