File Histories
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`1
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`APPLE 1002
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`

`

`(cid:3)
`
`(cid:41)(cid:44)(cid:47)(cid:40)(cid:3)(cid:43)(cid:44)(cid:54)(cid:55)(cid:50)(cid:53)(cid:60)
`FILE HISTORY
`(cid:56)(cid:54)(cid:3)(cid:25)(cid:15)(cid:26)(cid:26)(cid:20)(cid:15)(cid:28)(cid:28)(cid:23)
`US 6,771,994
`
`(cid:25)(cid:15)(cid:26)(cid:26)(cid:20)(cid:15)(cid:28)(cid:28)(cid:23)
`(cid:51)(cid:36)(cid:55)(cid:40)(cid:49)(cid:55)(cid:29)
`6,771,994
`PATENT:
`(cid:44)(cid:49)(cid:57)(cid:40)(cid:49)(cid:55)(cid:50)(cid:53)(cid:54)(cid:29) (cid:46)(cid:44)(cid:36)(cid:49)(cid:44)(cid:3)(cid:48)(cid:36)(cid:54)(cid:54)(cid:44)(cid:3)(cid:40)
`INVENTORS: KIANI MASSI E
`(cid:39)(cid:44)(cid:36)(cid:37)(cid:3)(cid:48)(cid:50)(cid:43)(cid:36)(cid:48)(cid:40)(cid:39)(cid:3)(cid:46)
`DIAB MOHAMED K
`
`(cid:55)(cid:44)(cid:55)(cid:47)(cid:40)(cid:29)
`TITLE:
`
`(cid:51)(cid:88)(cid:79)(cid:86)(cid:72)(cid:3)(cid:82)(cid:91)(cid:76)(cid:80)(cid:72)(cid:87)(cid:72)(cid:85)(cid:3)(cid:83)(cid:85)(cid:82)(cid:69)(cid:72)(cid:16)(cid:82)(cid:73)(cid:73)(cid:3)(cid:71)(cid:72)(cid:87)(cid:72)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:86)(cid:92)(cid:86)(cid:87)(cid:72)(cid:80)
`Pulse oximeter probe-off detection system
`
`(cid:36)(cid:51)(cid:51)(cid:47)(cid:44)(cid:38)(cid:36)(cid:55)(cid:44)(cid:50)(cid:49)
`APPLICATION (59003374303A
`(cid:56)(cid:54)(cid:21)(cid:19)(cid:19)(cid:22)(cid:22)(cid:26)(cid:23)(cid:22)(cid:19)(cid:22)(cid:36)
`(cid:49)(cid:50)(cid:29)
`NO:
`(cid:41)(cid:44)(cid:47)(cid:40)(cid:39)(cid:29)
`FILED:
`(cid:44)(cid:54)(cid:54)(cid:56)(cid:40)(cid:39)(cid:29)
`ISSUED:
`
`(cid:21)(cid:23)(cid:3)(cid:41)(cid:40)(cid:37)(cid:3)(cid:21)(cid:19)(cid:19)(cid:22)
`24 FEB 2003
`(cid:19)(cid:22)(cid:3)(cid:36)(cid:56)(cid:42)(cid:3)(cid:21)(cid:19)(cid:19)(cid:23)
`03 AUG 2004
`
`(cid:38)(cid:50)(cid:48)(cid:51)(cid:44)(cid:47)(cid:40)(cid:39)(cid:29)
`COMPILED:
`
`(cid:20)(cid:28)(cid:3)(cid:48)(cid:36)(cid:53)(cid:3)(cid:21)(cid:19)(cid:21)(cid:19)
`19 MAR 2020
`
`2
`
`

`

`
`copSICHsansaus.pro
`10/374303URGEea
`
`PATENT NUMBERand
`2
`is
`il4i i | —
`U.S. UTILITYPatentApplication
`a
`Hl
`be
`od
`
`[areNUM|FILING DATE |CcLAss GAU EX NES
`
`40374203 o2/24/2003|600 Je 3736 a
`
`
`(APPLICANTS:—
`Klani Massi; Diab Mohamed;
`
`7
`
`_
`
`Ab O38 Ald
`"Aen
`
`PTE AT TT
`
`
`
`
`
`
`
`SSSSSS—=
`
` |
`
`WRONTINUING DATA VERIFIED:
`ti‘ais application is a DIV of 09/595,081 06/16/2000 PAT 6,526,309
`reclaimsbenefitof60/149,G0006/48/1999
`
`|!
`
`‘+ SOREIGN APPLICATIONS VERIFIED:
`
`
`
` ATTORNEY DOCKET NO
`‘
` | Foren priory clalmed
`0 yes B’no
`
`is U2 425 conditloas met
`0 yes
`
`
`
`MASIMO.172DV1
`ied aneape Eveniinars's intials
`PH
`
`mld
`ee“seonlmaterfre
`
`ULS.DEPT. OF COMM PAT & TM-FTO-430L (Rav, 12-74
`'3e oximeter frcbe-off detection system
`
`
`
`.
`}
`1
`<nots BS
`>
`
`
`
`
`
`
`
`
`
`
`» aie|2Seaea 2 cy’ a Pat ini J M, ark Con
`
`
`
`CLAIMS ALLOWED
`
`[ TERMINAL
`DISCLAMER
`
`WARNING: The information disclosed herein may be restricted,
`Unauthorized disclosure may be prohibited by the United States Code Title 35,
`Sections 122, 181 and 368, Possession outside the U.S, Patent & Trademark
`
`
`a CD-ROM
`
`_
`
`; _ .
`
`;
`
`____ fttachied In pocket onightinsidefap)
`
`FILEDWITH: 0 DISK(CRF)
`
`3
`
`

`

`Post Issue Communication - Certificate of Correction
`
`
`(cid:25)(cid:15)(cid:26)(cid:26)(cid:20)(cid:15)(cid:28)(cid:28)(cid:23)(cid:3)
`6,771,994
`(cid:51)(cid:56)(cid:47)(cid:54)(cid:40)(cid:3)(cid:50)(cid:59)(cid:44)(cid:48)(cid:40)(cid:55)(cid:40)(cid:53)(cid:3)(cid:51)(cid:53)(cid:50)(cid:37)(cid:40)(cid:16)(cid:50)(cid:41)(cid:41)(cid:3)(cid:39)(cid:40)(cid:55)(cid:40)(cid:38)(cid:55)(cid:44)(cid:50)(cid:49)(cid:3)(cid:54)(cid:60)(cid:54)(cid:55)(cid:40)(cid:48)(cid:3)
`PU
`LSE OXIMETER PROBE-OFF DETECTION SYSTEM
`(cid:55)(cid:85)(cid:68)(cid:81)(cid:86)(cid:68)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:43)(cid:76)(cid:86)(cid:87)(cid:82)(cid:85)(cid:92)(cid:3)
`Transaction History
`(cid:55)(cid:85)(cid:68)(cid:81)(cid:86)(cid:68)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:39)(cid:72)(cid:86)(cid:70)(cid:85)(cid:76)(cid:83)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)
`(cid:39)(cid:68)(cid:87)(cid:72)(cid:3)
`Transaction Description
`Date
`(cid:19)(cid:21)(cid:16)(cid:21)(cid:23)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3) (cid:58)(cid:82)(cid:85)(cid:78)(cid:73)(cid:79)(cid:82)(cid:90)(cid:3)(cid:16)(cid:3)(cid:39)(cid:85)(cid:68)(cid:90)(cid:76)(cid:81)(cid:74)(cid:86)(cid:3)(cid:41)(cid:76)(cid:81)(cid:76)(cid:86)(cid:75)(cid:72)(cid:71)
`02-24-2003
`Workflow - Drawings Finished
`(cid:19)(cid:21)(cid:16)(cid:21)(cid:23)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3) (cid:58)(cid:82)(cid:85)(cid:78)(cid:73)(cid:79)(cid:82)(cid:90)(cid:3)(cid:16)(cid:3)(cid:39)(cid:85)(cid:68)(cid:90)(cid:76)(cid:81)(cid:74)(cid:86)(cid:3)(cid:48)(cid:68)(cid:87)(cid:70)(cid:75)(cid:72)(cid:71)(cid:3)(cid:90)(cid:76)(cid:87)(cid:75)(cid:3)(cid:41)(cid:76)(cid:79)(cid:72)(cid:3)(cid:68)(cid:87)(cid:3)(cid:38)(cid:82)(cid:81)(cid:87)(cid:85)(cid:68)(cid:70)(cid:87)(cid:82)(cid:85)
`02-24-2003
`Workflow - Drawings Matched with File at Contractor
`Initial Exam Team nn
`(cid:19)(cid:21)(cid:16)(cid:21)(cid:23)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3)
`(cid:44)(cid:81)(cid:76)(cid:87)(cid:76)(cid:68)(cid:79)(cid:3)(cid:40)(cid:91)(cid:68)(cid:80)(cid:3)(cid:55)(cid:72)(cid:68)(cid:80)(cid:3)(cid:81)(cid:81)
`02-24-2003
`(cid:19)(cid:22)(cid:16)(cid:20)(cid:23)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3)
`(cid:44)(cid:41)(cid:58)(cid:3)(cid:54)(cid:70)(cid:68)(cid:81)(cid:3)(cid:9)(cid:3)(cid:51)(cid:36)(cid:38)(cid:53)(cid:3)(cid:36)(cid:88)(cid:87)(cid:82)(cid:3)(cid:54)(cid:72)(cid:70)(cid:88)(cid:85)(cid:76)(cid:87)(cid:92)(cid:3)(cid:53)(cid:72)(cid:89)(cid:76)(cid:72)(cid:90)
`03-14-2003
`IFW Scan & PACR Auto Security Review
`(cid:19)(cid:23)(cid:16)(cid:20)(cid:26)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3) (cid:36)(cid:83)(cid:83)(cid:79)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:44)(cid:86)(cid:3)(cid:49)(cid:82)(cid:90)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:79)(cid:72)(cid:87)(cid:72)
`04-17-2003
`Application Is Now Complete
`(cid:19)(cid:23)(cid:16)(cid:20)(cid:27)(cid:16)(cid:21)(cid:19)(cid:19)(cid:22)(cid:3) (cid:36)(cid:83)(cid:83)(cid:79)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:39)(cid:76)(cid:86)(cid:83)(cid:68)(cid:87)(cid:70)(cid:75)(cid:72)(cid:71)(cid:3)(cid:73)(cid:85)(cid:82)(cid:80)(cid:3)(cid:50)(cid:44)(cid:51)(cid:40)
`04-18-2003
`Application Dispatched from OIPE
`Case Docketed to Examiner in GAU
`(cid:19)(cid:22)(cid:16)(cid:19)(cid:28)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:38)(cid:68)(cid:86)(cid:72)(cid:3)(cid:39)(cid:82)(cid:70)(cid:78)(cid:72)(cid:87)(cid:72)(cid:71)(cid:3)(cid:87)(cid:82)(cid:3)(cid:40)(cid:91)(cid:68)(cid:80)(cid:76)(cid:81)(cid:72)(cid:85)(cid:3)(cid:76)(cid:81)(cid:3)(cid:42)(cid:36)(cid:56)
`03-09-2004
`
`(cid:19)(cid:23)(cid:16)(cid:19)(cid:24)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:49)(cid:82)(cid:87)(cid:76)(cid:70)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:36)(cid:79)(cid:79)(cid:82)(cid:90)(cid:68)(cid:81)(cid:70)(cid:72)(cid:3)(cid:39)(cid:68)(cid:87)(cid:68)(cid:3)(cid:57)(cid:72)(cid:85)(cid:76)(cid:73)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:38)(cid:82)(cid:80)(cid:83)(cid:79)(cid:72)(cid:87)(cid:72)(cid:71)
`04-05-2004 Notice of Allowance Data Verification Completed
`04-13-2004 Mail Notice of Allowance
`(cid:19)(cid:23)(cid:16)(cid:20)(cid:22)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:48)(cid:68)(cid:76)(cid:79)(cid:3)(cid:49)(cid:82)(cid:87)(cid:76)(cid:70)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:36)(cid:79)(cid:79)(cid:82)(cid:90)(cid:68)(cid:81)(cid:70)(cid:72)
`(cid:19)(cid:23)(cid:16)(cid:20)(cid:28)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:39)(cid:76)(cid:86)(cid:83)(cid:68)(cid:87)(cid:70)(cid:75)(cid:3)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:79)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:86)
`04-19-2004
`Dispatch to Publications
`(cid:19)(cid:23)(cid:16)(cid:21)(cid:20)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:83)(cid:87)(cid:3)(cid:76)(cid:81)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:86)(cid:3)
`04-21-2004
`Receipt into Pubs
`(cid:19)(cid:23)(cid:16)(cid:21)(cid:21)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:83)(cid:87)(cid:3)(cid:76)(cid:81)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:86)(cid:3)
`04-22-2004
`Receipt into Pubs
`Workflow - File Sent to Contractor
`(cid:19)(cid:23)(cid:16)(cid:21)(cid:21)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:58)(cid:82)(cid:85)(cid:78)(cid:73)(cid:79)(cid:82)(cid:90)(cid:3)(cid:16)(cid:3)(cid:41)(cid:76)(cid:79)(cid:72)(cid:3)(cid:54)(cid:72)(cid:81)(cid:87)(cid:3)(cid:87)(cid:82)(cid:3)(cid:38)(cid:82)(cid:81)(cid:87)(cid:85)(cid:68)(cid:70)(cid:87)(cid:82)(cid:85)
`04-22-2004
`
`(cid:19)(cid:24)(cid:16)(cid:21)(cid:24)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:83)(cid:87)(cid:3)(cid:76)(cid:81)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:86)(cid:3)
`05-25-2004 Receipt into Pubs
`
`(cid:19)(cid:25)(cid:16)(cid:21)(cid:21)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3)
`(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:3)(cid:41)(cid:72)(cid:72)(cid:3)(cid:51)(cid:68)(cid:92)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:57)(cid:72)(cid:85)(cid:76)(cid:73)(cid:76)(cid:72)(cid:71)
`06-22-2004
`Issue Fee Payment Verified
`(cid:19)(cid:25)(cid:16)(cid:21)(cid:21)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3)
`(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:3)(cid:41)(cid:72)(cid:72)(cid:3)(cid:51)(cid:68)(cid:92)(cid:80)(cid:72)(cid:81)(cid:87)(cid:3)(cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:89)(cid:72)(cid:71)
`06-22-2004
`Issue Fee Payment Received
`(cid:19)(cid:25)(cid:16)(cid:21)(cid:21)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:83)(cid:87)(cid:3)(cid:76)(cid:81)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:86)(cid:3)
`06-22-2004
`Receipt into Pubs
`(cid:19)(cid:26)(cid:16)(cid:19)(cid:20)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:39)(cid:76)(cid:86)(cid:83)(cid:68)(cid:87)(cid:70)(cid:75)(cid:3)(cid:87)(cid:82)(cid:3)(cid:41)(cid:39)(cid:38)(cid:3)
`07-01-2004
`Dispatch to FDC
`
`(cid:19)(cid:26)(cid:16)(cid:19)(cid:20)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:36)(cid:83)(cid:83)(cid:79)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:44)(cid:86)(cid:3)(cid:38)(cid:82)(cid:81)(cid:86)(cid:76)(cid:71)(cid:72)(cid:85)(cid:72)(cid:71)(cid:3)(cid:53)(cid:72)(cid:68)(cid:71)(cid:92)(cid:3)(cid:73)(cid:82)(cid:85)(cid:3)(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)
`07-01-2004
`Application Is Considered Ready for Issue
`(cid:19)(cid:26)(cid:16)(cid:19)(cid:25)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:72)(cid:76)(cid:83)(cid:87)(cid:3)(cid:76)(cid:81)(cid:87)(cid:82)(cid:3)(cid:51)(cid:88)(cid:69)(cid:86)(cid:3)
`07-06-2004
`Receipt into Pubs
`(cid:19)(cid:26)(cid:16)(cid:20)(cid:24)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3)
`(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:3)(cid:49)(cid:82)(cid:87)(cid:76)(cid:73)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:48)(cid:68)(cid:76)(cid:79)(cid:72)(cid:71)
`07-15-2004
`Issue Notification Mailed
`(cid:19)(cid:27)(cid:16)(cid:19)(cid:22)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:53)(cid:72)(cid:70)(cid:82)(cid:85)(cid:71)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:82)(cid:73)(cid:3)(cid:51)(cid:68)(cid:87)(cid:72)(cid:81)(cid:87)(cid:3)(cid:42)(cid:85)(cid:68)(cid:81)(cid:87)(cid:3)(cid:48)(cid:68)(cid:76)(cid:79)(cid:72)(cid:71)
`08-03-2004
`Recordation of Patent Grant Mailed
`Patent Issue Date Used in PTA Calculation
`(cid:19)(cid:27)(cid:16)(cid:19)(cid:22)(cid:16)(cid:21)(cid:19)(cid:19)(cid:23)(cid:3) (cid:51)(cid:68)(cid:87)(cid:72)(cid:81)(cid:87)(cid:3)(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:3)(cid:39)(cid:68)(cid:87)(cid:72)(cid:3)(cid:56)(cid:86)(cid:72)(cid:71)(cid:3)(cid:76)(cid:81)(cid:3)(cid:51)(cid:55)(cid:36)(cid:3)(cid:38)(cid:68)(cid:79)(cid:70)(cid:88)(cid:79)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)
`08-03-2004
`
`(cid:20)(cid:21)(cid:16)(cid:19)(cid:27)(cid:16)(cid:21)(cid:19)(cid:19)(cid:24)(cid:3) (cid:38)(cid:82)(cid:85)(cid:85)(cid:72)(cid:86)(cid:83)(cid:82)(cid:81)(cid:71)(cid:72)(cid:81)(cid:70)(cid:72)(cid:3)(cid:36)(cid:71)(cid:71)(cid:85)(cid:72)(cid:86)(cid:86)(cid:3)(cid:38)(cid:75)(cid:68)(cid:81)(cid:74)(cid:72)
`12-08-2005 Correspondence Address Change
`(cid:19)(cid:25)(cid:16)(cid:20)(cid:27)(cid:16)(cid:21)(cid:19)(cid:19)(cid:26)(cid:3) (cid:51)(cid:82)(cid:86)(cid:87)(cid:3)(cid:44)(cid:86)(cid:86)(cid:88)(cid:72)(cid:3)(cid:38)(cid:82)(cid:80)(cid:80)(cid:88)(cid:81)(cid:76)(cid:70)(cid:68)(cid:87)(cid:76)(cid:82)(cid:81)(cid:3)(cid:16) (cid:38)(cid:72)(cid:85)(cid:87)(cid:76)(cid:73)(cid:76)(cid:70)(cid:68)(cid:87)(cid:72)(cid:3)(cid:82)(cid:73)(cid:3)(cid:38)(cid:82)(cid:85)(cid:85)(cid:72)(cid:70)(cid:87)(cid:76)(cid:82)(cid:81)
`06-18-2007
`(cid:19)(cid:27)(cid:16)(cid:19)(cid:21)(cid:16)(cid:21)(cid:19)(cid:20)(cid:20)(cid:3) (cid:38)(cid:82)(cid:85)(cid:85)(cid:72)(cid:86)(cid:83)(cid:82)(cid:81)(cid:71)(cid:72)(cid:81)(cid:70)(cid:72)(cid:3)(cid:36)(cid:71)(cid:71)(cid:85)(cid:72)(cid:86)(cid:86)(cid:3)(cid:38)(cid:75)(cid:68)(cid:81)(cid:74)(cid:72)
`08-02-2011 Correspondence Address Change
`
`(cid:3)
`
`4
`
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`SEARCH NOTES
`(List databases searched. Attach
`search strategy
`inside.
`|Class|Sub.|Date|Exmr.|
`~ |
`
`Voloucts
`probesatseseJHO Bp ff
`ever pearbd
`
`
`
`INTERFERENCE SEARCHED
`
`
`
`7
`
`

`

`
`
`US006771994B2
`
`
`
`United States Patent
`(12)
`(10) Patent No.:
`US 6,771,994 B2
`
`Kianict al.
`(45) Date of Patent:
`Aug.3, 2004
`
`(54) PULSE OXIMETER PROBE-OFT
`DETECTION SYSTEM
`
`(75)
`
`Inventors: Massi E. Kiani, Laguna Niguel, CA
`.
`j
`et
`(5): catsy K.-Diah; Mission
`1€]0,
`(73) Assignee: Masimo Corporation, Irvine, CA (US)
`
`6/1997 Fazekas wees 235/462.06
`5,635,700 A *
`6/1998 Diab ct al.
`5,758,644 A
`6/1998 While wee 396/4
`5,761,540 A *
`icon pee et at
`ales ‘
`196
`ab
`ct al.
`5,823,6
`
`7/1999 Dvorkis el al
`5,933,021 A *
`wee 23555
`
`3/2000 Baker, In...
`600/323
`6,035,223 A *
`FOREIGN PATENT DOCUMENTS
`
`(*) Notice:
`
`Subject to any disclaimer, the term of this
`patent is extended or adjusted under 35
`es
`a
`US.C. 154(b) by 0 days
`
`DE
`EP
`GB
`KI
`
`197 28 ee Al
`O182 197 Ae
`2061 496 A
`0315 040 AL
`
`11/1999
`
`;
`
`(21) Appl. No.: 10/374,303
`(22)
`Filed:
`Feb. 24, 2003
`.
`.
`oe
`(65)
`Prior Publication Data
`US 2003/0139656 Al Jul. 24, 2003
`Related U.S. Application Data
`. ; —
`.
`;
`(62) Division of application No. 09/595,081, filed on Jun. 16,
`(60)
`ProvisionaleuglieaiionReon40.000.
`filed on Jun. 18
`1900,
`.
`ee
`oo
`.
`7
`
`(BE) TRAIT sncscsveccessssecnnrecsnesvescesurerstoetrevncies A61B 5/00
`
`(52) US. CL oe.
` 600/323; 600/344
`we 600/309-310,
`(58) Field of Search
`600/322-324, 316, 344, 473, 476
`
`(56)
`
`References Cited
`US. PATENT DOCUMENTS
`4295475 A
`10/1981 Torzala
`4,331,161 A
`5/1982 Patel
`4501440 A
`12/1985 Kuboct al.
`;
`4,003,700 A
`8/1986 Nichols ct al.
`:
`a
`m4 220) Wish et Be ssccceeeereennne SONS
`A
`7/1993 Swedlowetal.
`4A
`12/1994 Wonget al,
`SA
`11/1995 DeLonzoret al.
`A
`4/1996 Pologeet al.
`
`
`
`£02
`
`ABSTRACT
`
`* cited by examiner
`Primary Examiner—Mary Beth Jones
`Assistant Examiner—Matthew Kremer
`(74) Attorney, Agent, or L'irm—Knobbe,Martens, Olson, &
`Bear, LLP
`57
`Cn
`‘Lhe present invention provides a number of improvements
`that can be incorporatedinto a pulse oximeter probe to detect
`when a probe has become dislodged froma patient and/orto
`preventa probe-off condition. A probe-off condition occurs
`when the optical probe becomes partially or completely
`dislodged fromthe patient, but continues to deteet an AC
`signal within the operating region of the pulse oximeter. In
`one aspect, the present inventionprovides clectrical contacts
`that contact the skin of a patient when the probe is properly
`altached. In another aspect, the present invention provides a
`number oflouvers placed in front of the sensor’s photode-
`tector to filter out oblique light rays that do not originate
`from a point in front of the detector. Accordingly, if the
`emitter and photodetector are not properly aligned,
`the
`photodetector will not produce a signal within the valid
`operating range of the pulse oximeter. In accordance with a
`method of the present
`invention the pulse oximeter can
`sound an alarm ordisplay a warning if it determines that the
`Lie i
`t
`ly attached.
`to.
`the
`patient
`probe is not properly attached to the paticnt.
`18 Claims, 15 Drawing Sheets
`
`\
`
`
`
`
`
`—
`
`
`
`8
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 1 of 15
`
`US6,771,994 B2
`
`fo
`
`140
`
`PULSE OXIMETER
`
`CONNECTOR
`
`9
`
`

`

`U.S. Patent
`
`Aug. 3, 2004
`
`Sheet 2 of 15
`
`US 6,771,994 B2
`
`
`
`L202
`
`
`
`FIG.2B
`
`10
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 3 of 15
`
`US6,771,994 B2
`
`PROBE
`OFF
`
`PULSE OXIMETER
`
`DETECTOR
`
`FIG.SA
`
`11
`
`11
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`US6,771,994 B2
`
`Sheet 4 of 15
`
`FIG.3B
`
`12
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 5 of 15
`
`US6,771,994 B2
`
`fo
`
`740
`
`PULSE OXIMETER
`
`152
`
`PROBE
`OFF
`DETECTOR|
`
`_
`
`7%
`
`CONNECTOR
`
`202
`
`FIGC.38C
`
`13
`
`13
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 6 of 15
`
`US6,771,994 B2
`
`fo
`
`740
`
`PULSE OXIMETER
`
`PROBE
`OFF
`DETECTOR |
`
`CONNECTOR
`
`4352
`
`202
`
`FIC.38D
`
`14
`
`14
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 7 of 15
`
`US6,771,994 B2
`
`
`
`PULSE OXIMETER
`
`PROBE
`OFF
`DETECTOR|»
`
`
`
`
`
`FICG.SE
`
`15
`
`15
`
`

`

`U.S. Patent
`
`US6,771,994 B2
`
`Aug.3, 2004
`
`Sheet 8 of 15
`
`FIG.3F
`
`16
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 9 of 15
`
`US6,771,994 B2
`
`PULSE OXIMETER
`
`PROBE
`OFF
`DETECTOR
`
`
`
`FIGC.38C
`
`17
`
`17
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`US6,771,994 B2
`
`Sheet 10 of 15
`
`FIC.3SH
`
`18
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 11 of 15
`
`US6,771,994 B2
`
`
`
`19
`
`19
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 12 of 15
`
`US6,771,994 B2
`
`20
`
`20
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`US6,771,994 B2
`
`Sheet 13 of 15
`
`FICG.5B
`
`21
`
`21
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 14 of 15
`
`US6,771,994 B2
`
`L202
`
`IO4A
`
`250
`
`506
`
`IO2
`
`FIG.SC
`
`22
`
`22
`
`

`

`U.S. Patent
`
`Aug.3, 2004
`
`Sheet 15 of 15
`
`US6,771,994 B2
`
`to|
`604
`
`
`
`CHECK CONTINUITY
`BETWEEN SKIN
`CONTACTS
`
`
`
`
`
`
`CHECK FOR VALID
`AC SIGNAL FROM
`PHOTO DETECTOR
`
`E76 ~
`
`-
`
`oN
`
`
`
`
`
`VALID SIGNAL
`
`?
`
` SOUND ALARM
`
`FIG.6
`
`23
`
`23
`
`

`

`US 6,771,994 B2
`
`2
`In one aspect, the present invention provides a number of
`electrical contacts that contact the skin of a patient when the
`robe is properlyattached.‘The pulse oximeter can check the
`continuity through the contacts to determine whether the
`robe is properly attached. If the probe is not properly
`attached, the pulse oximeter can identify a probe-off condi-
`tion even though the oximeter measures an AC signal that
`appears like the probeisstill attached.
`In another aspect, the present invention provides a num-
`ber of louvers placed in front of the probe’s photodetector to
`filter out oblique light rays that do not originate from a point
`in frontof the detector. If the probe becomesdislodged,the
`emiller will not likely remain in front of the photodetector.
`If the emilter and photodetector are not properlyaligned, the
`photodetector will not praduce a signal within the valid
`operating range of the pulse oximeter. The louvers prevent
`ight from an oblique angle from reaching the photodetector
`and creating a false signal that might be interpreted by the
`nuse oximeter as a physiological signal. Accordingly, the
`use oximeter can determine thal a probe has become
`dislodged when the photodetector does not produce a valid
`signal. Furthermore, probc-off conditions can avoided since
`oblique light rays are not able to reach the photodetector to
`roduce an apparently valid signal.
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`
`
`1
`PULSE OXIMETER PROBE-OFF
`DETECTION SYSTEM
`REFERENCE TO RELATED APPLICATIONS
`
`The present application claims priorily benefit under 35
`US.C. § 120 to,andis a divisional of, U.S. patent applica-
`tion Scr. No. 09/595,081,filed Jun. 16, 2000, nowU.S. Pat.
`No. 6,526,300, entitled “Pulse Oximeter Probe-Off Detec-
`
`tion System,” which claimspriority benefit under 35 U.S.C.
`§ 119(e) from U.S. Provisional Application No. 60/140,000,
`filed Jun. 18, 1999, entitled “Pulse Oximeter Probe-Off
`Detection System.” The present application also imcorpo-
`rates the foregving utility disclosure herein by reference.
`BACKGROUNDOF THE INVENTION
`
`The present invention relates to optical probes that can be
`attachedto the finger, tac, or appendage of a paticnt. More
`particularly,
`the present invention relates to devices and
`methods for identifying when a probe has becomedislodged
`from apatient.
`DESCRIPTION OF THE RELATED ART
`
`Oximetry is the measurement of the oxygen status of
`blood. Early detection of low blood oxygenis critical in the
`medical field, for example in crilical care and surgical
`applications, because an insufficient oxygen supply can
`result in brain damage and death in a matter of minutes.
`Pulse oximetry is a widely accepted noninvasive procedure
`for measuring the oxygen saturationlevel of arterial blood,
`an indicator of oxygen supply. A pulse oximetry system
`generally consists of a probe attached to a patient, a monitor,
`and a cable connecting the probe and monitor.
`Conventionally, a pulse oximetry probe has both red and
`infrared (IR) light-emitting diode (LED) emitters and a
`photodiode detector. The probe is typically attached to a
`paticnt’s finger or toc, or a very young paticnt’s foot. For a
`finger, the probe is configured so that the emitters project
`light through the fingernail, the arteries, vessels, capillaries,
`tissue and bone. ‘lhe photodiode is positioned opposite the
`LED so as to detect the LED transmitted light as it emerges
`from the finger tissues.
`The pulse oximetry monitor (pulse oximeter) determines
`oxygen saluration by analyzing the differential absorption by
`arterial blood of the two wavelengths emitted by the probe.
`The pulse oximeter alternately activates the probe LED
`emitters and reads the resulting current generated by the
`photodiode detector.
`‘This current
`is proportional
`to the
`intensily of the detected light. The pulse oximeter calculates
`aratio of detected red andinfraredintensities, and an arterial
`oxygen saturation value is empirically determined based on
`the ratio obtained. The pulse oximeter contains cireuitry for
`controlling the probe, processing the probe signals and
`displaying the patient’s oxygen saturation and pulse rate. A
`pulse oximeter is described in U.S. Pat. No. 5,632,272
`assigned to the assignee of the present invention.
`SUMMARY OF THE INVENTION
`
`The present invention provides a oumber of improve-
`ments that can be incorporated into a pulse oximeter probe
`to deteet when a probe has becomedislodged froma patient
`and/or to prevent a probe-off condition. A probe-off condi-
`tion occurs when the optical probe becomes partially or
`completely dislodged from the patient, bul may continue to
`detect an AC signal within the operating region of the pulse
`oximeter.
`
`10
`
`weoh
`
`60
`
`
`
`Referring now to the drawings in which like referenee
`numbers represent corresponding components throughout:
`FIG.
`1
`illustrates a schematic of one embodiment of a
`pulse oximeter system;
`FIGS. 2A-B depict an optical probe and the attachment of
`the optical probe on the fingertip of an adult paticat;
`FIG. 3A illusirates a schematic of a pulse oximeter sysiem
`that incorporates electrical contacts to the skin of a patient,
`in accordance with one embodimetof the present invention;
`TIG. 3B illustrates a perspective view of anoptical probe
`incorporating, electrical contacts to the skin of a patient;
`FIG. 3C illustrates a schematic of one embodiment of a
`pulse oximeter systemthat incorporateselectrical contacts to
`the skin of a paticnt;
`FIG.3D illustrates a schematic of a preferred embodiment
`of a
`pulse oximeter system that incorporates a number of
`electrical contacts lo the skin of a patient;
`FIG. 3E depicts a generalized schematic of a pulse
`oximeter that incorporates another embodimentof a contact
`on a pulse oximeter probe;
`TIG. 3F depicts a perspective view an optical probe
`incorporating the embodiment of FIG. 3E;
`HIG. 3G depicts a generalized schematic of a pulse
`oximeter system that incorporates another embodiment of a
`contact sensor in accordance with the present invention;
`TIG. 311 depicts a perspective view of an optical probe
`incorporating the contact sensor of FIG. 3G;
`FIG. 4 illustrates a probe that has become unfastened;
`TIG. 5A illustrates a probe wherein a number of louvers
`are placed in front of the detector assembly;
`FIG. 5B illustrates a properly attached probe wherein a
`number of louvers are placed in front of the detector
`assembly;
`FIG.SCillustrates a top plan viewofa preferred embodi-
`ment of a probe wherein a numberof louvers are placed in
`front of the detector assembly
`TIG. 6 illustrates a flow chart of the methodof detecting
`a dislodged prabe.
`
`
`
`24
`
`24
`
`

`

`US 6,771,994 B2
`
`10
`
`
`
`3
`DETAILED DESCRIPTION OF THE
`PREFERRED EMBODIMENT
`
`4
`the cod of the optical probe 202 opposite from a connectar
`tab 210. The probe 202 further includes an emitter aperture
`220 with a numberof emitters (e.g., a light-emitting diodes)
`‘To compute peripheral arterial oxygen saturation, denoted
`positioned within the central portion 204 close to the con-
`Sp,0., pulse oximetry relies on the differential light absorp-
`5 neclor portion 210,anda detector aperture 230 which allows
`tion of oxygenated hemoglobin, HbO,, and deoxygenated
`light to pass through the detector aperture 230 to a detector
`hemoglobin, IIb. This differential absorption is measuredat
`assembly 235. An adult fingertip 250 is shown in phantom
`the red and infrared wavelengths of the probe. In addition,
`in FIG. 2A to illustrate the position at which thefingertip 250
`pulse oximetryrelics onthe pulsatile nature of arterial bload
`is placed when the probe 202 is to be fastened onto the
`to differentiate hemoglobin absorption from absorption of
`fingertip 250 for use. Although not depicted specifically in
`other constituents in the surrounding tissues. Light absorp-
`FIGS. 2A-2B,
`the probe 202 is typically fabricated from
`tion between systole and diastole varies due to the blood
`multiple layers.
`volume change from the inflow and outllowofarterial blood
`FIG. 2B illustrates the probe 202 fastened onto the
`al a peripheral tissue site. The tissue site might also comprise
`fingertip 250. As shown in FIG. 2B, the probe 202 folds to
`skin, muscle, bone, venous blood,fat, pigment, cte., cach of
`conformto the very end of the fingertip. The adhesive Haps
`whichabsorbslight. Blood oxygensaturation measurements
`205 fold downward (in the illustration of FIG. 2B) to wrap
`are based uponaratio of the time-varying or AC portion of
`around the fingertip 250 while the adhesive flaps 215 fold
`the detected red and infrared signals with respect to the
`upward (in the illustration of FIG. 2B) about a portion of the
`time-invariant or DC portion. This AC/DC ratio normalizes
`circumference of the fingertip 250 to provide support. As
`the signals and accounts for variations in light pathlengths
`shown in PIG. 2B, when the probe 202 is folded about the
`through the measured tissue.
`fingerlip
`250,
`the emitlers located within tbe probe are
`As reproducedin FIG. 1, a schematic of one embodiment
`spaced opposite the detector assembly 235 such that light
`of a pulse oximeter system 100 is disclosed in U.S. Pat. No.
`from the emitters passes through the emitter aperture 220,
`5,758,644(the *644 patent), assigned to the assignee of the
`through the finger 250 and is incident upon the detector
`resent application and incorporated herein hy reference.
`assembly 235 through the detector aperture 230.
`‘The system 100 comprises a pulse oximeter 140, which is
`FIG. 2B depicts a receiving connector portion 260) which
`attached through a connector 142 to a probe 110. The probe
`engages with contacts 252 on the connector 210 to provide
`110 comprises a first LED 112, a second LED 114 and a
`an electrical connection between the optical probe 202 and
`hotodetector 116. The first and second LEDs 112 and 114
`are connected back-to-back and share a commonelectrical
`the pulse oximeter 140. Once the optical probe 202 is
`securelyfastened to the fingertip 250 and the connector 210
`connection 118. The photodetector 116 has its ownelectrical
`connection 122. Hach of the LEDs 112 and 114 and the
`provides an electrical connection betweenthe optical probe
`202 and digital signal processing circuitry, signals are
`hotodctector 116 are connected at their outputs to a com-
`detected from the detector 235 and transmitted to the pra-
`mongroundelectrical connection 130. ‘The two LEDs 112
`cessing circuitry via the connector 260.
`and 114 are preferably configured to produce different
`A. probe-off condition occurs when the optical probe
`wavelengths of light, which pass through the flesh of a
`becomes partially or completely dislodged fromthe patient,
`alient to be detected by the photodetector 116. The oxime-
`but continues to detect an AC signal within the operating
`ter 140 can select the LED to be driven by applying either
`region of the pulse oximeter. Probe-off errors are serious
`a positive or negative voltage to the connection 118. A
`because the pulse oximeter maydisplay a normalsaturation
`coding resistor 132 has a resistance that can measured bythe
`when,
`in fact,
`the probe is not properly attached to the
`ulse oximeter 140 to determine the particular characteris-
`patient, potentially leading to missed desaturation events.
`tics of the probe 110. The coding resistor 132 is coupled in
`arallel with the first LED 112 or the second LED 114. The
`Failure to detect a probe-off condition is the result of the
`probe detector reeciving light directly from the cmitters
`resistor 132 can be usedto indicate the operating wavelength
`without transmission through the patient's tissue.
`ofthe first and second LEDs 112 and 114,or to indicate the
`
`type of probe. In order to read the coding resistor 132, the Asillustrated in the schematic of FIG. 3A,afirst aspect
`ulse oximeter 140 drivesthe first LED 112/codingresistor
`of the present invention involves an optical probe 202 which
`132 combinationat a level that is low enough that the LED
`incorporates a numberof electrical contacts 341 and 342 that
`draws insignificant current. At this level, significantlyall of
`make contact to the skin of the patient when the probe 202
`the current flows through the coding resistor 132 and the
`is properly secured.In order to detect a probe-off condition,
`pulse oximeter 140 can determine the value of the resistor in
`a probe-off detector module 138 of the pulse oximeter L40
`accordance with Ohm’s law. By configuring the coding
`periodically applics a voltage across the contacts 341 and
`342 or