Method and apparatus for selecting inlets of a multiple inlet FAIMS
First Claim
1. An apparatus for selecting between a first ion inlet orifice and a second ion inlet orifice of a FAIMS device, comprising:
- a first electrode defining a first ion inlet orifice within a first portion thereof, and defining a second ion inlet orifice within a second portion thereof;
a second electrode disposed in a spaced-apart relationship with the first electrode, a space between the first electrode and the second electrode defining a FAIMS analyzer region;
at least a cover for selectably covering the first ion inlet orifice and the second ion inlet orifice, the at least a cover larger than either the first ion inlet orifice or the second ion inlet orifice and providing for uncovering of a substantial area about the first ion inlet orifice and the second ion inlet orifice; and
,an actuator interface for being driven by an actuator and for moving the at least a cover from a first position in which the first ion inlet orifice is uncovered by the at least a cover and the second ion inlet orifice is covered by a first portion of the at least a cover, to a second other position in which the second ion inlet orifice is uncovered by the at least a cover and the first ion inlet orifice is covered by a second portion of the at least a cover.
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Accused Products
Abstract
An ion introduction system for selecting ions from one of two separate ionization sources of ions is provided. The system includes a plate having a hole formed therethrough, the plate for being disposed adjacent an ion introduction region of a gas phase ion analyzer such that the hole is selectively movable between a first location in which the hole is adjacent to a first ionization source of ions for supporting introduction of ions from the first ionization source of ions into the gas phase ion analyzer, and a second location in which the hole is adjacent to a second ionization source of ions for supporting introduction of ions from the second ionization source of ions into the gas phase ion analyzer. The system also includes a drive mechanism for driving the plate between a first position in which the hole is at the first location and a second position in which the hole is at the second location.
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Citations
19 Claims
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1. An apparatus for selecting between a first ion inlet orifice and a second ion inlet orifice of a FAIMS device, comprising:
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a first electrode defining a first ion inlet orifice within a first portion thereof, and defining a second ion inlet orifice within a second portion thereof; a second electrode disposed in a spaced-apart relationship with the first electrode, a space between the first electrode and the second electrode defining a FAIMS analyzer region; at least a cover for selectably covering the first ion inlet orifice and the second ion inlet orifice, the at least a cover larger than either the first ion inlet orifice or the second ion inlet orifice and providing for uncovering of a substantial area about the first ion inlet orifice and the second ion inlet orifice; and
,an actuator interface for being driven by an actuator and for moving the at least a cover from a first position in which the first ion inlet orifice is uncovered by the at least a cover and the second ion inlet orifice is covered by a first portion of the at least a cover, to a second other position in which the second ion inlet orifice is uncovered by the at least a cover and the first ion inlet orifice is covered by a second portion of the at least a cover. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for selecting between a first ion inlet orifice and a second ion inlet orifice of a FAIMS device, comprising:
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a first electrode defining within a first portion thereof a first ion inlet orifice having first dimensions, and defining within a second portion thereof a second ion inlet orifice having second dimensions; a second electrode disposed in a spaced-apart relationship with the first electrode, a space between the first electrode and the second electrode defining a FAIMS analyzer region; at least a cover, comprising; a first cover portion for covering the first ion inlet orifice when the at least a cover is in a first position and displaceable by an amount that is sufficient for uncovering a substantial area about the first ion inlet orifice when the cover is in a second position; a second cover portion for covering the second ion inlet orifice when the at least a cover is in the second position and displaceable by an amount that is sufficient for uncovering a substantial area about the second ion inlet orifice when the cover is in the first position; and
,an actuator interface for being driven by an actuator and for moving the at least a cover from the first position to the second position. - View Dependent Claims (9, 10, 11)
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12. A method of selecting between a first ion inlet orifice and a second ion inlet orifice of a FAIMS device, comprising:
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providing a FAIMS device comprising a first electrode and a second electrode, the first electrode and the second electrode disposed in a spaced apart arrangement and defining a FAIMS analyzer region therebetween, the FAIMS device comprising a first ion inlet orifice defined within a first portion of the first electrode and a second ion inlet orifice defined within a second portion of the first electrode; providing a rotating actuator; and
,in response to rotation of the rotating actuator in a first direction, uncovering the first ion inlet orifice and covering the second ion inlet orifice, wherein the first ion inlet orifice is covered over a first range of rotational orientations of the rotating actuator and is uncovered over a second range of rotational orientations of the rotating actuator, such that accurate rotational alignment of the rotating actuator is obviated. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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Specification