GB2276939A - Gastric probe - Google Patents

Gastric probe

Info

Publication number
GB2276939A
GB2276939A GB9410761A GB9410761A GB2276939A GB 2276939 A GB2276939 A GB 2276939A GB 9410761 A GB9410761 A GB 9410761A GB 9410761 A GB9410761 A GB 9410761A GB 2276939 A GB2276939 A GB 2276939A
Authority
GB
United Kingdom
Prior art keywords
liquid
gas
concentration
gastric probe
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB9410761A
Other versions
GB9410761D0 (en
Inventor
Andrew Roy Webb
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEDICINA Ltd
Original Assignee
MEDICINA Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by MEDICINA Ltd filed Critical MEDICINA Ltd
Publication of GB9410761D0 publication Critical patent/GB9410761D0/en
Publication of GB2276939A publication Critical patent/GB2276939A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14539—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring pH
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
    • A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
    • A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/1455—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters
    • A61B5/1459—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue using optical sensors, e.g. spectral photometrical oximeters invasive, e.g. introduced into the body by a catheter

Abstract

A gastric probe comprises a light source (23) connected by a first fibreoptic connector (22) to a light dispersing member (21), said member being disposed in a body of liquid contained in a gas permeable container (20), said liquid containing a compound adapted to fluoresce upon excitation by said light source, the intensity of the fluorescence being dependent on the concentration of gas within said liquid, a second fibreoptic connector (29) extending from a location within the container to a detector adapted to produce a signal indicative of the concentration of gas in said liquid. <IMAGE>
GB9410761A 1991-12-24 1994-05-27 Gastric probe Withdrawn GB2276939A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB919127390A GB9127390D0 (en) 1991-12-24 1991-12-24 Gastric probe
PCT/GB1992/002392 WO1993012710A1 (en) 1991-12-24 1992-12-23 Gastric probe

Publications (2)

Publication Number Publication Date
GB9410761D0 GB9410761D0 (en) 1994-08-10
GB2276939A true GB2276939A (en) 1994-10-12

Family

ID=10706825

Family Applications (2)

Application Number Title Priority Date Filing Date
GB919127390A Pending GB9127390D0 (en) 1991-12-24 1991-12-24 Gastric probe
GB9410761A Withdrawn GB2276939A (en) 1991-12-24 1994-05-27 Gastric probe

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB919127390A Pending GB9127390D0 (en) 1991-12-24 1991-12-24 Gastric probe

Country Status (2)

Country Link
GB (2) GB9127390D0 (en)
WO (1) WO1993012710A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338568B (en) * 1998-06-19 2000-12-20 Optiscan Pty Ltd Two photon endoscope or microscope method and apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5830138A (en) * 1996-12-16 1998-11-03 Trustees Of The University Of Pennsylvania Intravascular catheter probe for clinical oxygen, pH and CO2 measurement
EP2150176B1 (en) * 2007-04-27 2016-04-27 St. Jude Medical AB Implantable concentration sensor and device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807390A (en) * 1972-12-04 1974-04-30 American Optical Corp Fiber optic catheter
EP0263692A2 (en) * 1986-10-10 1988-04-13 Minnesota Mining And Manufacturing Company Gas sensor
WO1990001893A1 (en) * 1988-08-26 1990-03-08 Mountpelier Investments S.A. Remote sensing tonometric catheter apparatus and method
WO1990001894A1 (en) * 1988-08-26 1990-03-08 Mountpelier Investments S.A. Tonometric catheter combination

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3807390A (en) * 1972-12-04 1974-04-30 American Optical Corp Fiber optic catheter
EP0263692A2 (en) * 1986-10-10 1988-04-13 Minnesota Mining And Manufacturing Company Gas sensor
WO1990001893A1 (en) * 1988-08-26 1990-03-08 Mountpelier Investments S.A. Remote sensing tonometric catheter apparatus and method
WO1990001894A1 (en) * 1988-08-26 1990-03-08 Mountpelier Investments S.A. Tonometric catheter combination

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE Transactions on Bio-Medical engineering vol.33,no.2, February 1986, pages 117-132 *
Proc 1991 IEEE 17th Annual NorthEast Bioengineering Conference,5 April 1991,pages 141-143 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2338568B (en) * 1998-06-19 2000-12-20 Optiscan Pty Ltd Two photon endoscope or microscope method and apparatus

Also Published As

Publication number Publication date
WO1993012710A1 (en) 1993-07-08
GB9410761D0 (en) 1994-08-10
GB9127390D0 (en) 1992-02-19

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)