US5366346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronically controlled intravenous fluid infusion device
Assignee: Danby Medical Ltd
•
Filing: 1992-10-30
•
Granted: 1994-11-22
•
Expires: 2012-10-30
Abstract
Abstract A microprocessor controlled volumetric infusion pump is set as to volume and rate of infusion by two digipots (shaft encoders) each having sixteen detented positioned in 360 degrees. The microprocessor is programmed such that the extent to which the parameter is changed for a given rotation of its setting digipot depends on the speed with which the digipot is rotated. For slow or normal rotation, unit change in parameter is produced for each detented position traversed. Faster rotation causes the setting to jump from one to the next of a series of preselected preferred settings, irrespective of the number of detented positions traversed. The direction of rotation determines whether the setting increases or decreases.
Inventors
- 👤 Hal C. Danby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 08:46
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/168; A61M5/172; G; G05; G05B; G05B19/00; G05B19/02; G05B19/04; G05B19/10; G05B19/106; G05B19/108
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
84 words
An electronically controlled infusion device for controlling fluid to be infused intravenously in the treatment of a patient, comprising: at least one manually operated control for producing a signal generated by manual operation of the control to set at least one fluid infusion operating parameter; and means for producing an extent of change in said operating parameter for a given extent of movement of said at least one control in dependence upon the speed with which the as least one control is manually operated.
Claim 2
Dependent Claim
84 words
An electronically controlled infusion device for controlling fluid to be infused intravenously in the treatment of a patient, comprising: at least one manually operated control for producing a signal generated by manual operation of the control to set at least one fluid infusion operating parameter; and means for producing an extent of change in said operating parameter for a given extent of movement of said at least one control in dependence upon the speed with which the as least one control is manually operated.
Claim 3
Dependent Claim
28 words
A device as claimed in claim 1, comprising: plural separate controls for setting the volume to be infused and the flow rate of the fluid to be infused.
Claim 4
Dependent Claim
17 words
A device as claimed in claim 2, comprising: a dedicated control for each parameter to be set.
Claim 5
Dependent Claim
65 words
A device as claimed in claim 1, and wherein said means for producing is responsive to two or more rates of movement, normal or slow movement providing incremental change in the setting of the parameter, or respective parameter, and faster movement causing the setting of said parameter to jump from one predetermined preferred setting to another separated therefrom by a plurality of incremental setting changes.
Claim 6
Dependent Claim
30 words
A device as claimed in claim 4, wherein said means for producing is responsive to two rates of movement, normal or slow movement and fast movement, for setting flow rate.
Claim 7
Dependent Claim
24 words
A device as claimed in claim 4, and wherein said means for producing is responsive to three rates of movement for setting the volume-to-be-infused.
Claim 8
Dependent Claim
71 words
A device as claimed in claim 6, wherein, for setting the volume-to-be-infused said means for producing is responsive to three rates of movement, normal or slow movement causing incremental setting changes; fast movement causing the setting to jump to the next multiple of 100 ml of volume of fluid to be infused, and very fast movement causing the setting to jump to the next adjacent multiple of 1000 ml of volume-to-infused.
Claim 9
Dependent Claim
16 words
A device as claimed in claim 1, wherein at least one control comprises a rotary control.
Claim 10
Dependent Claim
14 words
A device as claimed in claim 8, wherein said rotary control comprises a digipot.
Claim 11
Dependent Claim
15 words
A device as claimed in claim 8, wherein said rotary control comprises a shaft encoder.
References Cited (Backward Citations)
US3655123A
Cited
US4105028A
Cited
US4275464A
Cited
GB2059634A
Cited
US4261360A
Cited
EP0049364A2
Cited
EP0050208A1
Cited
DE3214661A1
Cited
EP0109182A1
Cited
GB2201948A
Cited
US4976687A
Cited
US5061923A
Cited
US5151019A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-11-21 | 1998-05-23 | 1998-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-11-21 | 2002-05-23 | 2002-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-11-21 | 2006-05-23 | 2006-11-22 | $7700.00 | Window Closed / Lapsed |