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1. (WO2008033937) METHODS AND DEVICES FOR DIFFERENTIATING BETWEEN TISSUE TYPES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2008/033937 International Application No.: PCT/US2007/078290
Publication Date: 20.03.2008 International Filing Date: 12.09.2007
IPC:
A61B 18/14 (2006.01) ,A61B 18/16 (2006.01)
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
14
Probes or electrodes therefor
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
18
Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
04
by heating
12
by passing a current through the tissue to be heated, e.g. high-frequency current
14
Probes or electrodes therefor
16
Indifferent or passive electrodes for grounding
Applicants:
KAUSHAL, Shalesh [US/US]; US (UsOnly)
FURMAN, Michael, Darnall [US/US]; US (UsOnly)
SIMONOTTO, Jennifer, Delight [US/US]; US (UsOnly)
MILIOTIS, Abraham [US/US]; US (UsOnly)
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. [US/US]; 223 Grinter Hall Gainesville, FL 32611, US (AllExceptUS)
Inventors:
KAUSHAL, Shalesh; US
FURMAN, Michael, Darnall; US
SIMONOTTO, Jennifer, Delight; US
MILIOTIS, Abraham; US
Agent:
SALIWANCHIK, David, R. ; Saliwanchik, Lloyd & Saliwanchik A Professional Association P.O. Box 142950 Gainesville, FL 32614-2950, US
Priority Data:
60/843,99212.09.2006US
Title (EN) METHODS AND DEVICES FOR DIFFERENTIATING BETWEEN TISSUE TYPES
(FR) PROCÉDÉS ET DISPOSITIFS DE DIFFÉRENTIATION DE TYPES DE TISSU
Abstract:
(EN) The subject invention utilizes the characteristics of in vivo tissue impedances to provide an embodiment of a medical instrument capable of providing a visible and/or preferably an audible signal to a surgeon that more clearly indicates which type of tissue(s) is in contact with the instrument. A preferred embodiment comprises a handheld, battery operated retinal rake having two electrodes, wherein at least one electrode is the modified retinal rake. Upon contact with different optical tissues, e.g., epiretinal membranes, retinal tissue, vitreous humor, etc., the electrodes detect varying impedances which are translated by onboard circuitry into various signals that indicate what type of tissue, fluid, structure, etc. is in contact with the retinal rake.
(FR) L'objet de la présente invention utilise les caractéristiques d'impédance des tissu in vivo pour fournir le mode de réalisation d'un instrument médical capable de produire un signal visuel et/ou de préférence sonore au chirurgien afin d'indiquer de manière plus claire le type de tissu(s) avec lequel l'instrument est en contact. Un mode de réalisation préféré comprend un vagueur rétinien portable alimenté par accumulateurs et doté de deux électrodes, l'une d'entre elles au moins étant le vagueur rétinien modifié. Au contact de divers tissus optiques tels que les membranes épirétinales, le tissu rétinien, l'humeur vitrée etc., les électrodes détectent les variations d'impédance qui sont transformées par circuiterie embarquée en signaux variés indiquant le type de tissu, de fluide, de structure etc. qui est en contact avec le vagueur rétinien.
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Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)