RU2201169C2 - Ultrasonic device for carrying out neurosurgical treatment - Google Patents

Ultrasonic device for carrying out neurosurgical treatment Download PDF

Info

Publication number
RU2201169C2
RU2201169C2 RU2000103178/14A RU2000103178A RU2201169C2 RU 2201169 C2 RU2201169 C2 RU 2201169C2 RU 2000103178/14 A RU2000103178/14 A RU 2000103178/14A RU 2000103178 A RU2000103178 A RU 2000103178A RU 2201169 C2 RU2201169 C2 RU 2201169C2
Authority
RU
Russia
Prior art keywords
ultrasonic
transducer
selected
flexible
resonance
Prior art date
Application number
RU2000103178/14A
Other languages
Russian (ru)
Other versions
RU2000103178A (en
Inventor
Е.С. Андреева
А.В. Верещако
Ю.В. Верещако
С.А. Колосов
Л.Е. Шейнман
Original Assignee
Санкт-Петербургская медицинская академия последипломного образования
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 Санкт-Петербургская медицинская академия последипломного образования filed Critical Санкт-Петербургская медицинская академия последипломного образования
Priority to RU2000103178/14A priority Critical patent/RU2201169C2/en
Publication of RU2000103178A publication Critical patent/RU2000103178A/en
Application granted granted Critical
Publication of RU2201169C2 publication Critical patent/RU2201169C2/en

Links

Abstract

FIELD: medical engineering. SUBSTANCE: device has ultrasonic oscillator unit, electroacoustic rod transducer, half-wave concentrator unit and flexible acoustic conductor mechanically connected to each other. The ultrasonic oscillator unit operates in frequency bandwidth of 30 to 40 kHz. It is connected in series to modulating impulse oscillator unit and electroacoustic transducer having tie rod inside. The ultrasonic concentrator unit is exponent-shaped. Its output and input end areas are selected to enable one to produce ultrasound to 1000 W/cm2 intensity when achieving specific power corresponding to its mechanical strength. The flexible acoustic conductor is manufactured from metal or ceramic material and has 3 mm large diameter and length selected for producing resonance on the n-th harmonic of oscillations relative to acoustic conductor resonance frequency. EFFECT: high concentration of radiation to produce localized action upon tissues to be destroyed. 1 dwg

Description

 The invention relates to medicine, and more particularly to neurosurgery.

 For injuries and neoplastic diseases of the brain, special surgical treatment is required. The proposed neurosurgical ultrasound device is intended to improve the treatment and destruction of brain tumors and damaged brain tissue caused by traumatic brain injury.

 Known surgical instruments for removing tumors and damaged brain matter: 1-mechanical with the help of microsurgical instruments (scissors, konhotom, tweezers); 2-electric for electrodermatocoagulation; 3 devices of laser surgery; 4 devices for cryodestruction.

 However, these devices lead to disturbances in nearby healthy areas of the brain.

 Known equipment for ultrasound therapy (A.R. Leavenson. Electro-medical equipment. - M .: Medicine, 1981. - C.255-273). This equipment contains a series-connected generator and an electro-acoustic transducer. However, it cannot be applied in neurosurgical practice.

 Known focusing ultrasound equipment for creating local damage in the deep structures of the brain (LR Gavrilov. The use of focused ultrasound of high intensity for local exposure to body tissues. "Acoustic Journal", 1971, v.15, issue 3). Focusing ultrasonic equipment for creating local damage in the deep structures of the brain contains a serially connected ultrasonic generator and a focusing electro-acoustic transducer with a concave piezoceramic plate and a bag of thin sound-transparent film with degassed water.

 The disadvantage of this analog device is the inaccuracy of focusing, which leads to damage to areas of healthy tissues, as well as the complexity of the equipment with insufficiently effective effect on the tissue to be destroyed.

The prototype device is (copyright certificate 1507352) "Ultrasonic instrument for influencing biological tissue", containing a transducer of piezoelectric material connected through a half-wave hub with a flexible waveguide having a working tip. Moreover, the waveguide length is selected from the condition

Figure 00000002

where l in is the waveguide length, l p is the length of the transducer, E in , E p , ρ c , ρ p are respectively Young's moduli and the density of the materials of the transducer and waveguide, n is an integer enclosed within 10 << n≤30, with this ratio of the mechanical impedances of the Converter and the waveguide is within
10 2 << Zп / Zв≤10 4 .

 This device cannot provide adequate surgical treatment for neurosurgical pathology, it works at optimal frequencies for the destruction of tumor and crushed brain tissues.

 The objective of the proposed neurosurgical device is to increase the efficiency and localization of the impact on the affected areas of the brain.

 The proposed neurosurgical ultrasound device contains, as well as the prototype device, an ultrasonic generator, mechanically connected rod electro-acoustic transducer, half-wave concentrator and flexible sound duct.

The ultrasonic generator is configured to operate at frequencies of 30-40 kHz and is connected in series with a modulating pulse generator and an electro-acoustic transducer made with a coupler inside, the ultrasonic concentrator has an exponential shape, and the areas of its input and output ends are selected with the possibility of providing an ultrasound intensity of up to 1000 W / cm 2 when the converter develops a specific power corresponding to its mechanical strength, a flexible sound duct is made of metal or ceramic diam with a diameter of 3 mm and a length selected with the possibility of providing resonance at the nth harmonic of the oscillations with respect to the resonant frequency of the sound duct.

The technical result is achieved due to the fact that at high intensities, ultrasound has a destructive effect primarily on diseased tissues. At high ultrasound intensities (1000 W / cm 2 ) and at small irradiation durations provided by the modulator, the decisive effect is provided by navigation effects.

 At the same time, with the help of a flexible sound duct, the canalization of ultrasound to the damaged part of the brain is carried out. Due to the small diameter of the sound duct, low-frequency ultrasound is not emitted in extraneous directions along the sound duct, which makes it possible to localize the surgical effect only on pathological tissues and not to irradiate healthy areas of the brain.

 The drawing shows a block diagram of the proposed neurosurgical ultrasound device.

 The neurosurgical ultrasound device comprises a serially connected ultrasonic generator 1, a modulating pulse generator 2, an electro-acoustic rod transducer 3 with a coupler inside, an exponential ultrasonic concentrator 4 and a flexible sound duct 5.

The work of the neurosurgical device is as follows. After making a hole in the skull, the end of the flexible sound duct 5 is inserted into the local pathological region of the brain. Generator 1 creates an electrical voltage at frequencies in the range of 30-40 kHz. Modulator 2 provides the formation of electrical pulses. Electrical pulses excite the rod transducer 3. The size of the rod of the transducer 3 in the direction of oscillation is selected for resonance at an average frequency f p = 35 kHz (B. Aronov. Electromechanical transducers from piezoelectric ceramics. - L .: Energoatomizdat, 1990. - 279 p. )

 The rod converter 3 is made of the so-called power structure with a screed inside (V.V. Gonopolsky and other Piezoceramic converters. Reference book. - L .: Sudostroenie, 1984. - 256 p.).

 An exponentially shaped ultrasonic concentrator 4 is mechanically connected to the rod half-wave transducer 3 to increase the amplitude of the vibrational displacement of the particles. It has a variable cross section and is connected to the rod transducer 3 with a wide end. The narrow end is connected to the flexible sound guide 5.

 The length of the sound pipe 5 is selected based on the main resonant frequency of the sound pipe.

 With a sound duct diameter of 5 to 3 mm, it is significantly (about 20 times) thinner than the length of the sound in the brain tissue.

 The sound pipe with its working end is immersed in the viscous medium of brain tissue. Therefore, it is immersed practically in purely active resistance (L. F. Lependin. Acoustics. - M .: Higher School, 1978. - P. 11-124) and there is a regime of purely traveling waves, since there are no wave reflections at the submerged end.

 Neurosurgical destructive effects are used on tumor tissues, as well as in traumatic lesions of the brain substance.

 The construction of blocks 1, 2, 3, 4, 5 included in the device does not need inventive creativity. Moreover, the combination of these blocks creates a device that provides the necessary neurosurgical result.

Claims (1)

  1. A neurosurgical ultrasonic device containing an ultrasonic generator, a mechanically connected rod electro-acoustic transducer, a half-wave concentrator and a flexible sound duct, characterized in that the ultrasonic generator is capable of operating at frequencies of 30-40 kHz and is connected in series with a modulating pulse generator and an electro-acoustic transducer made with a coupler inside, the ultrasonic concentrator has an exponential shape, and the areas of its input and output ATCs are selected to provide a intensity ultrasound to 1000 W / cm 2 with development of converter power density, corresponding to its mechanical strength, flexible acoustic line is made of metal or ceramic with a diameter of 3 mm and a length selected to provide a resonance at the n-th harmonic oscillation with respect to the resonance sound duct frequencies.
RU2000103178/14A 2000-02-08 2000-02-08 Ultrasonic device for carrying out neurosurgical treatment RU2201169C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2000103178/14A RU2201169C2 (en) 2000-02-08 2000-02-08 Ultrasonic device for carrying out neurosurgical treatment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2000103178/14A RU2201169C2 (en) 2000-02-08 2000-02-08 Ultrasonic device for carrying out neurosurgical treatment

Publications (2)

Publication Number Publication Date
RU2000103178A RU2000103178A (en) 2001-11-20
RU2201169C2 true RU2201169C2 (en) 2003-03-27

Family

ID=20230415

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000103178/14A RU2201169C2 (en) 2000-02-08 2000-02-08 Ultrasonic device for carrying out neurosurgical treatment

Country Status (1)

Country Link
RU (1) RU2201169C2 (en)

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034684B2 (en) 2015-06-15 2018-07-31 Ethicon Llc Apparatus and method for dissecting and coagulating tissue
US10034704B2 (en) 2015-06-30 2018-07-31 Ethicon Llc Surgical instrument with user adaptable algorithms
US10154852B2 (en) 2015-07-01 2018-12-18 Ethicon Llc Ultrasonic surgical blade with improved cutting and coagulation features
US10179022B2 (en) 2015-12-30 2019-01-15 Ethicon Llc Jaw position impedance limiter for electrosurgical instrument
US10194973B2 (en) 2015-09-30 2019-02-05 Ethicon Llc Generator for digitally generating electrical signal waveforms for electrosurgical and ultrasonic surgical instruments
US10201382B2 (en) 2009-10-09 2019-02-12 Ethicon Llc Surgical generator for ultrasonic and electrosurgical devices
US10226273B2 (en) 2013-03-14 2019-03-12 Ethicon Llc Mechanical fasteners for use with surgical energy devices
US10245065B2 (en) 2007-11-30 2019-04-02 Ethicon Llc Ultrasonic surgical blades
US10245064B2 (en) 2016-07-12 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10251664B2 (en) 2016-01-15 2019-04-09 Ethicon Llc Modular battery powered handheld surgical instrument with multi-function motor via shifting gear assembly
USD847990S1 (en) 2016-08-16 2019-05-07 Ethicon Llc Surgical instrument
US10278721B2 (en) 2010-07-22 2019-05-07 Ethicon Llc Electrosurgical instrument with separate closure and cutting members
US10285724B2 (en) 2014-07-31 2019-05-14 Ethicon Llc Actuation mechanisms and load adjustment assemblies for surgical instruments
US10285723B2 (en) 2016-08-09 2019-05-14 Ethicon Llc Ultrasonic surgical blade with improved heel portion
US10299810B2 (en) 2010-02-11 2019-05-28 Ethicon Llc Rotatable cutting implements with friction reducing material for ultrasonic surgical instruments
US10321950B2 (en) 2015-03-17 2019-06-18 Ethicon Llc Managing tissue treatment
US10335614B2 (en) 2008-08-06 2019-07-02 Ethicon Llc Devices and techniques for cutting and coagulating tissue
US10335182B2 (en) 2012-06-29 2019-07-02 Ethicon Llc Surgical instruments with articulating shafts
US10335183B2 (en) 2012-06-29 2019-07-02 Ethicon Llc Feedback devices for surgical control systems
US10342602B2 (en) 2015-03-17 2019-07-09 Ethicon Llc Managing tissue treatment
US10349999B2 (en) 2014-03-31 2019-07-16 Ethicon Llc Controlling impedance rise in electrosurgical medical devices
US10357303B2 (en) 2015-06-30 2019-07-23 Ethicon Llc Translatable outer tube for sealing using shielded lap chole dissector
US10376305B2 (en) 2016-08-05 2019-08-13 Ethicon Llc Methods and systems for advanced harmonic energy
WO2019160444A1 (en) * 2018-02-14 2019-08-22 Александр Петрович ДЕМЧЕНКО Ultrasonic fluid level sensor
US10398466B2 (en) 2007-07-27 2019-09-03 Ethicon Llc Ultrasonic end effectors with increased active length
US10420579B2 (en) 2007-07-31 2019-09-24 Ethicon Llc Surgical instruments
US10420580B2 (en) 2016-08-25 2019-09-24 Ethicon Llc Ultrasonic transducer for surgical instrument
US10426507B2 (en) 2007-07-31 2019-10-01 Ethicon Llc Ultrasonic surgical instruments
US10433900B2 (en) 2011-07-22 2019-10-08 Ethicon Llc Surgical instruments for tensioning tissue
US10441308B2 (en) 2007-11-30 2019-10-15 Ethicon Llc Ultrasonic surgical instrument blades
US10441345B2 (en) 2009-10-09 2019-10-15 Ethicon Llc Surgical generator for ultrasonic and electrosurgical devices
US10441310B2 (en) 2012-06-29 2019-10-15 Ethicon Llc Surgical instruments with curved section
US10456193B2 (en) 2016-05-03 2019-10-29 Ethicon Llc Medical device with a bilateral jaw configuration for nerve stimulation
US10463421B2 (en) 2014-03-27 2019-11-05 Ethicon Llc Two stage trigger, clamp and cut bipolar vessel sealer
US10485607B2 (en) 2016-04-29 2019-11-26 Ethicon Llc Jaw structure with distal closure for electrosurgical instruments
US10517627B2 (en) 2012-04-09 2019-12-31 Ethicon Llc Switch arrangements for ultrasonic surgical instruments
US10524872B2 (en) 2012-06-29 2020-01-07 Ethicon Llc Closed feedback control for electrosurgical device
US10524854B2 (en) 2010-07-23 2020-01-07 Ethicon Llc Surgical instrument
US10531910B2 (en) 2007-07-27 2020-01-14 Ethicon Llc Surgical instruments
US10537351B2 (en) 2016-12-16 2020-01-21 Ethicon Llc Modular battery powered handheld surgical instrument with variable motor control limits

Cited By (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10398466B2 (en) 2007-07-27 2019-09-03 Ethicon Llc Ultrasonic end effectors with increased active length
US10531910B2 (en) 2007-07-27 2020-01-14 Ethicon Llc Surgical instruments
US10426507B2 (en) 2007-07-31 2019-10-01 Ethicon Llc Ultrasonic surgical instruments
US10420579B2 (en) 2007-07-31 2019-09-24 Ethicon Llc Surgical instruments
US10441308B2 (en) 2007-11-30 2019-10-15 Ethicon Llc Ultrasonic surgical instrument blades
US10265094B2 (en) 2007-11-30 2019-04-23 Ethicon Llc Ultrasonic surgical blades
US10433866B2 (en) 2007-11-30 2019-10-08 Ethicon Llc Ultrasonic surgical blades
US10245065B2 (en) 2007-11-30 2019-04-02 Ethicon Llc Ultrasonic surgical blades
US10463887B2 (en) 2007-11-30 2019-11-05 Ethicon Llc Ultrasonic surgical blades
US10433865B2 (en) 2007-11-30 2019-10-08 Ethicon Llc Ultrasonic surgical blades
US10335614B2 (en) 2008-08-06 2019-07-02 Ethicon Llc Devices and techniques for cutting and coagulating tissue
US10265117B2 (en) 2009-10-09 2019-04-23 Ethicon Llc Surgical generator method for controlling and ultrasonic transducer waveform for ultrasonic and electrosurgical devices
US10201382B2 (en) 2009-10-09 2019-02-12 Ethicon Llc Surgical generator for ultrasonic and electrosurgical devices
US10441345B2 (en) 2009-10-09 2019-10-15 Ethicon Llc Surgical generator for ultrasonic and electrosurgical devices
US10299810B2 (en) 2010-02-11 2019-05-28 Ethicon Llc Rotatable cutting implements with friction reducing material for ultrasonic surgical instruments
US10278721B2 (en) 2010-07-22 2019-05-07 Ethicon Llc Electrosurgical instrument with separate closure and cutting members
US10524854B2 (en) 2010-07-23 2020-01-07 Ethicon Llc Surgical instrument
US10433900B2 (en) 2011-07-22 2019-10-08 Ethicon Llc Surgical instruments for tensioning tissue
US10517627B2 (en) 2012-04-09 2019-12-31 Ethicon Llc Switch arrangements for ultrasonic surgical instruments
US10441310B2 (en) 2012-06-29 2019-10-15 Ethicon Llc Surgical instruments with curved section
US10335182B2 (en) 2012-06-29 2019-07-02 Ethicon Llc Surgical instruments with articulating shafts
US10335183B2 (en) 2012-06-29 2019-07-02 Ethicon Llc Feedback devices for surgical control systems
US10524872B2 (en) 2012-06-29 2020-01-07 Ethicon Llc Closed feedback control for electrosurgical device
US10226273B2 (en) 2013-03-14 2019-03-12 Ethicon Llc Mechanical fasteners for use with surgical energy devices
US10463421B2 (en) 2014-03-27 2019-11-05 Ethicon Llc Two stage trigger, clamp and cut bipolar vessel sealer
US10349999B2 (en) 2014-03-31 2019-07-16 Ethicon Llc Controlling impedance rise in electrosurgical medical devices
US10285724B2 (en) 2014-07-31 2019-05-14 Ethicon Llc Actuation mechanisms and load adjustment assemblies for surgical instruments
US10342602B2 (en) 2015-03-17 2019-07-09 Ethicon Llc Managing tissue treatment
US10321950B2 (en) 2015-03-17 2019-06-18 Ethicon Llc Managing tissue treatment
US10034684B2 (en) 2015-06-15 2018-07-31 Ethicon Llc Apparatus and method for dissecting and coagulating tissue
US10357303B2 (en) 2015-06-30 2019-07-23 Ethicon Llc Translatable outer tube for sealing using shielded lap chole dissector
US10034704B2 (en) 2015-06-30 2018-07-31 Ethicon Llc Surgical instrument with user adaptable algorithms
US10154852B2 (en) 2015-07-01 2018-12-18 Ethicon Llc Ultrasonic surgical blade with improved cutting and coagulation features
US10194973B2 (en) 2015-09-30 2019-02-05 Ethicon Llc Generator for digitally generating electrical signal waveforms for electrosurgical and ultrasonic surgical instruments
US10179022B2 (en) 2015-12-30 2019-01-15 Ethicon Llc Jaw position impedance limiter for electrosurgical instrument
US10299821B2 (en) 2016-01-15 2019-05-28 Ethicon Llc Modular battery powered handheld surgical instrument with motor control limit profile
US10251664B2 (en) 2016-01-15 2019-04-09 Ethicon Llc Modular battery powered handheld surgical instrument with multi-function motor via shifting gear assembly
US10485607B2 (en) 2016-04-29 2019-11-26 Ethicon Llc Jaw structure with distal closure for electrosurgical instruments
US10456193B2 (en) 2016-05-03 2019-10-29 Ethicon Llc Medical device with a bilateral jaw configuration for nerve stimulation
US10543008B2 (en) 2016-05-27 2020-01-28 Ethicon Llc Ultrasonic surgical instruments with distally positioned jaw assemblies
US10245064B2 (en) 2016-07-12 2019-04-02 Ethicon Llc Ultrasonic surgical instrument with piezoelectric central lumen transducer
US10376305B2 (en) 2016-08-05 2019-08-13 Ethicon Llc Methods and systems for advanced harmonic energy
US10285723B2 (en) 2016-08-09 2019-05-14 Ethicon Llc Ultrasonic surgical blade with improved heel portion
USD847990S1 (en) 2016-08-16 2019-05-07 Ethicon Llc Surgical instrument
US10420580B2 (en) 2016-08-25 2019-09-24 Ethicon Llc Ultrasonic transducer for surgical instrument
US10537351B2 (en) 2016-12-16 2020-01-21 Ethicon Llc Modular battery powered handheld surgical instrument with variable motor control limits
WO2019160444A1 (en) * 2018-02-14 2019-08-22 Александр Петрович ДЕМЧЕНКО Ultrasonic fluid level sensor
US10537352B2 (en) 2018-04-06 2020-01-21 Ethicon Llc Tissue pads for use with surgical instruments

Similar Documents

Publication Publication Date Title
US3526219A (en) Method and apparatus for ultrasonically removing tissue from a biological organism
US3433226A (en) Vibratory catheterization apparatus and method of using
US3550586A (en) Ultrasonic treatment method and device for fertilized ova and live embryos
Shung Diagnostic ultrasound: Imaging and blood flow measurements
Hill The possibility of hazard in medical and industrial applications of ultrasound
Ogden et al. Principles of shock wave therapy
ES2705758T3 (en) System for controlled heat treatment of human surface tissue
EP0619104B1 (en) Ultrasonic irradiation apparatus
AU770503B2 (en) Ultrasonic medical device operating in a transverse mode
US6425906B1 (en) Ultrasonic cutting tool
CN100342929C (en) Apparatus and method for altrasonically and electromagnetically treating tissue
Manbachi et al. Development and application of piezoelectric materials for ultrasound generation and detection
JP3999715B2 (en) Ultrasonic treatment device
DE69632984T2 (en) Ultrasonic device for use in surgery
Sun et al. Focusing of therapeutic ultrasound through a human skull: a numerical study
JP4543430B2 (en) Ultrasonic probe and ultrasonic device
EP2629681B1 (en) An ultrasound transceiver
US4901709A (en) Shock wave source
US7850626B2 (en) Method and probe for using high intensity focused ultrasound
US9700340B2 (en) System and method for ultra-high frequency ultrasound treatment
US20090287205A1 (en) Systems and methods for preventing tissue popping caused by bubble expansion during tissue ablation
US8466605B2 (en) Patterned ultrasonic transducers
Nyborg Biological effects of ultrasound: development of safety guidelines. Part II: general review
US6514220B2 (en) Non focussed method of exciting and controlling acoustic fields in animal body parts
US20060184075A1 (en) Method and device for applying pressure waves to the body of an organism

Legal Events

Date Code Title Description
MM4A The patent is invalid due to non-payment of fees

Effective date: 20040209