US5762640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Effusion fluid sucking device
Assignee: NEC Corp
•
Filing: 1996-05-31
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Granted: 1998-06-09
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Expires: 2016-05-31
Abstract
Abstract A device for sucking an effusion fluid from the skin of an organism from which keratin has been removed. A disk is received in the cavity of a cell for sucking an effusion fluid in contact with the surface of an organism. Guide grooves are formed in the surface of the disk facing a suction port while holes are formed through the disk in each guide groove. The disk allows a minimum of fluid to remain thereon and guides the fluid toward the suction side in order to enhance efficient collection. When the fluid is collected a plurality of times, the preceding fluid and the following fluid are prevented from being mixed together, insuring accurate measurement.
Inventors
- 👤 Yuji Kajiwara
- 👤 Hidetaka Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:22
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/48; A61B5/4869; A61B5/4881; A61B5/0059; A61B5/42; A61B5/4261; A61B5/44; A61B5/441
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
134 words
A device for sucking and collecting an effusion fluid from an organism, comprising: a suction cell comprising a suction port for causing the effusion fluid to effuse from the organism by evacuation, and a cavity formed in an end of said suction cell for directly contacting a surface of the organism; a first disk received in said cavity and for directly contacting the surface of the organism; wherein said first disk is formed with a plurality of guide grooves on a surface thereof facing said suction port, and a plurality of through holes in said plurality of guide grooves; and a second disk interposed between said first disk and said suction port, said second disk covering open ends of said plurality of grooves and formed with a through bore aligned with said suction port.
Claim 2
Independent Claim
134 words
A device for sucking and collecting an effusion fluid from an organism, comprising: a suction cell comprising a suction port for causing the effusion fluid to effuse from the organism by evacuation, and a cavity formed in an end of said suction cell for directly contacting a surface of the organism; a first disk received in said cavity and for directly contacting the surface of the organism; wherein said first disk is formed with a plurality of guide grooves on a surface thereof facing said suction port, and a plurality of through holes in said plurality of guide grooves; and a second disk interposed between said first disk and said suction port, said second disk covering open ends of said plurality of grooves and formed with a through bore aligned with said suction port.
Claim 3
Dependent Claim
18 words
A device as claimed in claim 1, wherein said plurality of grooves extend radially on said first disk.
Claim 4
Dependent Claim
27 words
A device as claimed in claim 1, wherein said plurality of grooves comprise radially extending grooves and concentric grooves communicating said radially extending grooves to each other.
Claim 5
Dependent Claim
33 words
A device as claimed in claim 1, wherein said first disk further comprises an annular projection at an edge thereof for contacting the surface of the organism to thereby prevent vacuum from decreasing.
Claim 6
Dependent Claim
13 words
A device as claimed in claim 1, wherein the metal comprises stainless steel.
Claim 7
Dependent Claim
27 words
A device as claimed in claim 1, wherein said first disk has surfaces thereof formed of one of metal and resin sparingly ionizable against the effusion fluid.
Claim 8
Dependent Claim
12 words
A device as claimed in claim 6, wherein the metal comprises nickel.
Claim 9
Dependent Claim
12 words
A device as claimed in claim 6, wherein the resin comprises polyimide.
Claim 10
Dependent Claim
13 words
A device as claimed in claim 6, wherein the resin comprises vinyl chloride.
Claim 11
Dependent Claim
23 words
A device as claimed in claim 1, wherein said through holes and said guide grooves have a total capacity of about 10 μl.
Claim 12
Independent Claim
147 words
A device for sucking and collecting a liquid effused from a surface of a multicellular organism comprising: a suction cell having a suction port; a cavity in an end of said suction cell, said cavity in communication with said suction port; a disk with at least one guide groove on a suction cell side of said disk, whereby said guide groove for guiding said liquid effused from said surface of said multicellular organism through at least a portion of said cavity; a plurality of through-holes through said disk, said through-holes providing communication between said suction cell side of said disk to an opposite side; and a cover disk on said suction cell side of said disk with at least one guide groove, said cover disk having a lumen in communication with said suction port said cover disk providing a cover on said at least one guide groove.
Claim 13
Independent Claim
147 words
A device for sucking and collecting a liquid effused from a surface of a multicellular organism comprising: a suction cell having a suction port; a cavity in an end of said suction cell, said cavity in communication with said suction port; a disk with at least one guide groove on a suction cell side of said disk, whereby said guide groove for guiding said liquid effused from said surface of said multicellular organism through at least a portion of said cavity; a plurality of through-holes through said disk, said through-holes providing communication between said suction cell side of said disk to an opposite side; and a cover disk on said suction cell side of said disk with at least one guide groove, said cover disk having a lumen in communication with said suction port said cover disk providing a cover on said at least one guide groove.
Claim 14
Dependent Claim
16 words
The device according to claim 11, wherein said disk has a thickness of about 0.1 mm.
Claim 15
Dependent Claim
16 words
The device according to claim 11, wherein said disk has a diameter of about 30 mm.
Claim 16
Dependent Claim
20 words
The device according to claim 11, wherein said at least one guide groove has a width of about 0.15 mm.
Claim 17
Dependent Claim
20 words
The device according to claim 11, wherein said at least one guide groove has a depth of about 0.05 mm.
Claim 18
Dependent Claim
21 words
The device according to claim 11, wherein said at least one guide groove has a length less than about 15 mm.
Claim 19
Dependent Claim
23 words
The device according to claim 11, wherein said at least one guide groove comprises a plurality of guide grooves in a radial pattern.
Claim 20
Dependent Claim
19 words
The device according to claim 11, wherein said at least one guide groove comprises at least one annular groove.
Claim 21
Dependent Claim
16 words
The device according to claim 11, wherein said through-holes have a diameter of about 0.1 mm.
Claim 22
Dependent Claim
17 words
The device according to claim 11, wherein said at least one guide groove is formed by etching.
Claim 23
Dependent Claim
11 words
The device according to claim 20, wherein said etching comprises photolithography.
Claim 24
Dependent Claim
22 words
The device according to claim 11, further comprising a biosensor for measuring a concentration of a chemical substance in said liquid effused.
Claim 25
Dependent Claim
12 words
The device according to claim 22, wherein said chemical substance is glucose.
Claim 26
Dependent Claim
19 words
The device according to claim 11, wherein said disk includes at least one annular projection on said opposite side.
Claim 27
Dependent Claim
11 words
The device according to claim 11, further comprising a collection chamber.
Claim 28
Dependent Claim
18 words
The device according to claim 11, further comprising an O-ring sealing between said suction port and said disk.
Claim 29
Dependent Claim
18 words
The device according to claim 11, further comprising an O-ring sealing between said suction port and said disk.
Claim 30
Dependent Claim
26 words
The device according to claim 11, wherein said disk comprises irregular grooves on said opposite side, said irregular grooves providing a surface roughness of several microns.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-06-08 | 2001-12-08 | 2002-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-06-08 | 2005-12-08 | 2006-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-06-08 | 2009-12-08 | 2010-06-09 | $7700.00 | Window Closed / Lapsed |