Patent JPS62201736A successfully refreshed from Google Patents.
EP0702970A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Medication delivery pen with variable increment dose scale
Assignee: Becton Dickinson and Co
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Filing: 1995-09-14
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Granted: —
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Expires: 2015-09-14
Abstract
Abstract A medication delivery pen is provided having a pen body assembly and a cartridge assembly that are threadedly engageable with one another. The pen body assembly includes a rotatable driver for driving a cartridge plunger preselected distances that are in accordance with a desired dose of medication to be delivered. The driver providing different preset rates of injection.
Inventors
- 👤 Lawrence H. Chanoch
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 23:53
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/315; A61M5/31533; A61M5/31545; A61M5/31548; A61M5/31556; A61M5/3155; A61M5/31551; A61M5/31565; A61M5/31576; A61M5/31583; A61M5/31585; A61M2205/00; A61M2205/58; A61M2205/581; A61M5/24
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
179 words
A medication delivery pen comprising: a medication-containing cartridge assembly having a pierceably sealed distal end, an open proximal end having an array of threads, and a plunger in sliding fluid tight engagement within said cartridge at a location distally of said array of threads; and a pen body assembly having: a housing with opposed proximal and distal ends, said distal end having an array of threads dimensioned and pitched for threaded engagement with said threads at said proximal end of said cartridge; a lead screw having a proximal end disposed in said housing, a distal end projecting beyond said distal end of said housing for selective engagement with said plunger, and threads extending between said proximal and distal ends of said lead screw; and a dose setting knob having two or more regions of operation, each region having a plurality of dosage indicia for a predefined range of dosage increments, said dose setting knob being used to move said lead screw distally in said pen body assembly a distance corresponding to the selected region of operation and dosage indicia.
Claim 2
Dependent Claim
49 words
The medication delivery pen of Claim 1, wherein said pen body assembly further includes an actuator button rotatably mounted on said dose setting knob, such that axial forces exerted on said actuator button generate movement of said lead screw distally in said pen body assembly and into said cartridge.
Claim 3
Dependent Claim
30 words
The medication delivery pen of Claim 1, wherein said dose setting knob defines specified distances of travel for said lead screw corresponding to selected doses of medication to be delivered.
Claim 4
Dependent Claim
91 words
The medication delivery pen of Claim 1, wherein said sealed end of said cartridge assembly comprises a pierceable elastomeric seal, and wherein said cartridge assembly further comprises needle mounting means adjacent said distal end of said cartridge assembly, said medication delivery pen further comprising a needle cannula assembly having a hub selectively engageable with the mounting means of said cartridge assembly and a double-ended needle having opposed proximal and distal points, said proximal point of said needle being dimensioned and disposed to pierce said seal upon engagement with said cartridge assembly.
Claim 5
Dependent Claim
29 words
The medication delivery pen of Claim 4, further comprising a plurality of needle cannula assemblies, each said needle cannula assembly being selectively engageable and disengageable from said cartridge assembly.
Claim 6
Dependent Claim
50 words
The medication delivery pen of Claim 1, wherein said lead screw of said pen body assembly includes a longitudinally extending groove therein, and wherein said cartridge assembly includes a tab for slidably engaging the lead screw, whereby said tabs prevent relative rotation between said lead screw and said cartridge assembly.
Claim 7
Dependent Claim
45 words
The medication delivery pen of Claim 1, wherein said pen body assembly includes a button and said dose setting knob includes a groove for receiving said button and thereby controlling movement of said lead screw distally in said pen body assembly and into said cartridge.
Claim 8
Dependent Claim
35 words
The medication delivery pen of Claim 7, wherein said groove on said dose setting knob has a different pitch in each region of said dose setting knob, wherein each pitch provides for different dosage increments.
Claim 9
Dependent Claim
39 words
The medication delivery pen of Claim 1, wherein said pen body assembly includes a driver selectively movable in proximal and distal directions in said pen body assembly housing, said driver connecting said dose setting knob to said lead screw.
Claim 10
Dependent Claim
106 words
The medication delivery pen of Claim 9, wherein said threads on said lead screw define a pitch substantially identical to said pitch of said threads on said distal end of said housing, said lead screw being axially movable in said housing in response to movement of said driver by said dose setting knob for selectively advancing said lead screw distances from said housing corresponding to selected doses of medication, whereby the substantially identical pitches of said threads on said lead screw and on said housing enables said lead screw to move in said housing simultaneously with threaded engagement of said housing with said cartridge holder assembly.
References Cited (Backward Citations)
No citation records indexed.
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