[go: up one dir, main page]

WO2000042899A3 - Guide electro-thermal head for controllable sonde - Google Patents

Guide electro-thermal head for controllable sonde Download PDF

Info

Publication number
WO2000042899A3
WO2000042899A3 PCT/BG2000/000004 BG0000004W WO0042899A3 WO 2000042899 A3 WO2000042899 A3 WO 2000042899A3 BG 0000004 W BG0000004 W BG 0000004W WO 0042899 A3 WO0042899 A3 WO 0042899A3
Authority
WO
WIPO (PCT)
Prior art keywords
sonde
segment
controllable
guide
thermal head
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.)
Ceased
Application number
PCT/BG2000/000004
Other languages
French (fr)
Other versions
WO2000042899A2 (en
Inventor
Alexander R Stefanow
Ivan R Stefanow
Ranguel N Petkov
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU22715/00A priority Critical patent/AU2271500A/en
Publication of WO2000042899A2 publication Critical patent/WO2000042899A2/en
Publication of WO2000042899A3 publication Critical patent/WO2000042899A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/005—Flexible endoscopes
    • A61B1/0058—Flexible endoscopes using shape-memory elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0662—Guide tubes

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Pulmonology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

A guide electro-thermal head for controllable sonde is proposed. It consists of a metal ring with segment inserted chips of Zener diodes which are always in opposite connection when supply of power to two segments and on the account of the thermal effect from the junction of the diode which is directly proportional to the voltage of the junction and the current through it, mainly the segment of the opposite connected diode is heated. In this way the thermal energy of the front of the guide pipe in the definite segment is localised. Change of the direction and the value of the voltage toward the set opposite each other segments changes as well the speed of turning of the adjacent material of thermoelastic pipe which turns itself and around the head due to the activity of the spring inserted in the wall of the guide pipe and hydraulic pressure. As a result of this the direction of the penetration of the sonde is regulated and controlled.
PCT/BG2000/000004 1999-01-25 2000-01-25 Guide electro-thermal head for controllable sonde Ceased WO2000042899A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU22715/00A AU2271500A (en) 1999-01-25 2000-01-25 Guide electro-thermal head for controllable sonde

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BG103110 1999-01-25
BG103110A BG103110A (en) 1999-01-25 1999-01-25 Guiding electrothermal head for a controllable drill

Publications (2)

Publication Number Publication Date
WO2000042899A2 WO2000042899A2 (en) 2000-07-27
WO2000042899A3 true WO2000042899A3 (en) 2000-11-16

Family

ID=3927662

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BG2000/000004 Ceased WO2000042899A2 (en) 1999-01-25 2000-01-25 Guide electro-thermal head for controllable sonde

Country Status (3)

Country Link
AU (1) AU2271500A (en)
BG (1) BG103110A (en)
WO (1) WO2000042899A2 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753223A (en) * 1986-11-07 1988-06-28 Bremer Paul W System for controlling shape and direction of a catheter, cannula, electrode, endoscope or similar article
DE4435644A1 (en) * 1993-10-05 1995-04-06 Asahi Optical Co Ltd Bending section for an endoscope
WO1999060917A2 (en) * 1998-05-28 1999-12-02 Stefanow Alexander R Cannula with a built-in net for direction and a control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4753223A (en) * 1986-11-07 1988-06-28 Bremer Paul W System for controlling shape and direction of a catheter, cannula, electrode, endoscope or similar article
DE4435644A1 (en) * 1993-10-05 1995-04-06 Asahi Optical Co Ltd Bending section for an endoscope
WO1999060917A2 (en) * 1998-05-28 1999-12-02 Stefanow Alexander R Cannula with a built-in net for direction and a control system

Also Published As

Publication number Publication date
BG103110A (en) 2000-07-31
WO2000042899A2 (en) 2000-07-27
AU2271500A (en) 2000-08-07

Similar Documents

Publication Publication Date Title
BRPI0410469A (en) blind fastener and nozzle assembly for blind fastener installation
DK1851136T3 (en) Spray head as well as spray head look with such a spray head
ATE464515T1 (en) INDUSTRIAL HEATER
NO20052208L (en) Control device for downhole sampler
NO912063D0 (en) ENERGY RECOVERY PLANT, ISSUE A DRIVER FOR SHIPPROPROPELLERS, WITH SUPPLY FROM A SOLAR GENERATOR.
MY118855A (en) Method for fast closed-loop output control of a steam power plant, and a steam power plant
DE60144223D1 (en) Pointed drill bit and pointed drill with geometric tension control
MX9206723A (en) COMMUNICATION CABLE THAT HAS A NUCLEUS COVER FASTENER, WHICH PROVIDES RESISTANCE PROPERTIES AND BLOCKAGE AGAINST WATER.
ATE287023T1 (en) DRILL HOLE TOOL WITH EXTENDABLE PARTS
WO2001069980A8 (en) Control circuit for light-emitting diodes
SG74627A1 (en) Drill
WO2004095654A3 (en) Adjustable power control for laser drivers and laser diodes
AU2001266215A1 (en) Controlled flow of displaced material in self-pierce fastening
WO2000042899A3 (en) Guide electro-thermal head for controllable sonde
WO2004072433A3 (en) Downhole tractor with improved valve system
ATE423358T1 (en) TRANSPONDER WITH A CONTROLLED POWER-UP RESET CIRCUIT
WO2006126933A8 (en) Method and device
ATE232286T1 (en) GLOW PLUG
CA2360736A1 (en) Engine driven welding power supply with dig circuit
DE59809409D1 (en) Water tap with electrical control
EP1068853A4 (en) Covering sheet for skin and hair
WO2000015012A3 (en) Circuit arrangement
DE50115380D1 (en) Device for measuring and regulating the consumption values of energy carrier fluids
Everard Implementing the Water Framework Directive: opportunities and risks
SE9901464D0 (en) Protective attachment device

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A2

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase