WO1998005437B1 - Circuit generateur d'ultrasons renfermant un oscillateur de puissance et une chaine de contre-reaction - Google Patents

Circuit generateur d'ultrasons renfermant un oscillateur de puissance et une chaine de contre-reaction

Info

Publication number
WO1998005437B1
WO1998005437B1 PCT/GB1997/002052 GB9702052W WO9805437B1 WO 1998005437 B1 WO1998005437 B1 WO 1998005437B1 GB 9702052 W GB9702052 W GB 9702052W WO 9805437 B1 WO9805437 B1 WO 9805437B1
Authority
WO
WIPO (PCT)
Prior art keywords
ultrasonic generator
feedback
generator circuit
circuit
voltage
Prior art date
Application number
PCT/GB1997/002052
Other languages
English (en)
Other versions
WO1998005437A1 (fr
Filing date
Publication date
Priority claimed from GBGB9616186.4A external-priority patent/GB9616186D0/en
Application filed filed Critical
Priority to GB9901400A priority Critical patent/GB2333193B/en
Priority to AU37032/97A priority patent/AU3703297A/en
Publication of WO1998005437A1 publication Critical patent/WO1998005437A1/fr
Publication of WO1998005437B1 publication Critical patent/WO1998005437B1/fr

Links

Abstract

L'invention a trait à un circuit de générateur d'ultrasons comprenant un circuit LC (inductance-capacité) résonant à oscillateur de puissance destiné à commander un transducteur d'ultrasons. Le circuit résonant comporte un élément de commutation commandé en tension (un transistor bipolaire à grille intégrée est préféré). La contre-réaction est assurée via un transformateur à contre-réaction dont le primaire est connecté au circuit résonant et le secondaire à un convertisseur de signal de contre-réaction qui, en fonction du courant de contre-réaction induit dans le secondaire du transformateur de contre-réaction, a appliqué une tension de contre-réaction à l'entrée de l'élément de commutation commandé en tension.
PCT/GB1997/002052 1996-08-01 1997-08-01 Circuit generateur d'ultrasons renfermant un oscillateur de puissance et une chaine de contre-reaction WO1998005437A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB9901400A GB2333193B (en) 1996-08-01 1997-08-01 Ultrasonic generator circuit incorporating a power oscillator and a feedback loop
AU37032/97A AU3703297A (en) 1996-08-01 1997-08-01 Ultrasonic generator circuit incorporating a power oscillator and a feedback loop

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9616186.4 1996-08-01
GBGB9616186.4A GB9616186D0 (en) 1996-08-01 1996-08-01 Untrasonic generator

Publications (2)

Publication Number Publication Date
WO1998005437A1 WO1998005437A1 (fr) 1998-02-12
WO1998005437B1 true WO1998005437B1 (fr) 1998-03-19

Family

ID=10797860

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/002052 WO1998005437A1 (fr) 1996-08-01 1997-08-01 Circuit generateur d'ultrasons renfermant un oscillateur de puissance et une chaine de contre-reaction

Country Status (3)

Country Link
AU (1) AU3703297A (fr)
GB (1) GB9616186D0 (fr)
WO (1) WO1998005437A1 (fr)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0222421D0 (en) * 2002-09-27 2002-11-06 Ratcliff Henry K Advanced ultrasonic processor
US8182501B2 (en) 2004-02-27 2012-05-22 Ethicon Endo-Surgery, Inc. Ultrasonic surgical shears and method for sealing a blood vessel using same
US20060079879A1 (en) 2004-10-08 2006-04-13 Faller Craig N Actuation mechanism for use with an ultrasonic surgical instrument
US20070191713A1 (en) 2005-10-14 2007-08-16 Eichmann Stephen E Ultrasonic device for cutting and coagulating
US7621930B2 (en) 2006-01-20 2009-11-24 Ethicon Endo-Surgery, Inc. Ultrasound medical instrument having a medical ultrasonic blade
US8057498B2 (en) 2007-11-30 2011-11-15 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instrument blades
US8808319B2 (en) 2007-07-27 2014-08-19 Ethicon Endo-Surgery, Inc. Surgical instruments
US8523889B2 (en) 2007-07-27 2013-09-03 Ethicon Endo-Surgery, Inc. Ultrasonic end effectors with increased active length
US8430898B2 (en) 2007-07-31 2013-04-30 Ethicon Endo-Surgery, Inc. Ultrasonic surgical instruments
US8512365B2 (en) 2007-07-31 2013-08-20 Ethicon Endo-Surgery, Inc. Surgical instruments
US9044261B2 (en) 2007-07-31 2015-06-02 Ethicon Endo-Surgery, Inc. Temperature controlled ultrasonic surgical instruments
US10010339B2 (en) 2007-11-30 2018-07-03 Ethicon Llc Ultrasonic surgical blades
US8334635B2 (en) 2009-06-24 2012-12-18 Ethicon Endo-Surgery, Inc. Transducer arrangements for ultrasonic surgical instruments
US8951272B2 (en) 2010-02-11 2015-02-10 Ethicon Endo-Surgery, Inc. Seal arrangements for ultrasonically powered surgical instruments
US9820768B2 (en) 2012-06-29 2017-11-21 Ethicon Llc Ultrasonic surgical instruments with control mechanisms
US10226273B2 (en) 2013-03-14 2019-03-12 Ethicon Llc Mechanical fasteners for use with surgical energy devices
GB2521229A (en) * 2013-12-16 2015-06-17 Ethicon Endo Surgery Inc Medical device
US11020140B2 (en) 2015-06-17 2021-06-01 Cilag Gmbh International Ultrasonic surgical blade for use with ultrasonic surgical instruments
US10357303B2 (en) 2015-06-30 2019-07-23 Ethicon Llc Translatable outer tube for sealing using shielded lap chole dissector
US10245064B2 (en) 2016-07-12 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
USD847990S1 (en) 2016-08-16 2019-05-07 Ethicon Llc Surgical instrument
US11350959B2 (en) 2016-08-25 2022-06-07 Cilag Gmbh International Ultrasonic transducer techniques for ultrasonic surgical instrument
US10952759B2 (en) 2016-08-25 2021-03-23 Ethicon Llc Tissue loading of a surgical instrument

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1095436A (fr) *
US3727112A (en) * 1969-08-29 1973-04-10 Surgical Design Corp Generator for producing ultrasonic energy
GB8333696D0 (en) * 1983-12-17 1984-01-25 Glasshome Ltd Transistor amplifier

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