Method and system for destroying of undesirable formations in mammalian body

• US 9,498,237 B2
• Filed: 06/06/2014
• Issued: 11/22/2016
• Est. Priority Date: 02/24/2010
• Status: Expired due to Fees

• Current Assignee: Lithotech Medical Ltd. (Nordson Corporation)
• Original Assignee: Lithotech Medical Ltd. (Nordson Corporation)
• Inventors: Diamant, Valery, Dutov, Alexey, Chernenko, Vladimir, Lerner, Marat
• Primary Examiner(s): HOLWERDA, KATHLEEN SONNETT
• Application Number:
  US14/297,982
• Publication Number:
  US 20140288571A1
• Time in Patent Office: 900 Days
• Field of Search: 606/113, 606/114, 606/127, 606/128, 601 1- 4
• US Class Current: 1/1
• CPC Class Codes: A61B 17/2202 the ultrasound transducer being inside patient's body at the distal end of the catheter
• CPC Class Codes: A61B 17/22022 using electric discharge
• CPC Class Codes: A61B 2017/00185 Means for setting or varying the pulse height
• CPC Class Codes: A61B 2017/00194 Means for setting or varying the repetition rate
• CPC Class Codes: A61B 2017/00199 with a console, e.g. a control panel with a display
• CPC Class Codes: A61B 2017/00477 Coupling A61B2017/0046 takes precedence
• CPC Class Codes: A61B 2017/22021 electric leads passing through the catheter
• CPC Class Codes: A61B 2018/00988 Means for storing information, e.g. calibration constants, or for preventing excessive use, e.g. usage, service life counter
• CPC Class Codes: A61B 2090/0803 Counting the number of times an instrument is used
• CPC Class Codes: A61B 90/98 using electromagnetic means, e.g. transponders

Abstract

A method and a system for destruction of an undesirable formation in a mammalian body are described. The invention is based on inserting a probe into mammalian body; said probe is electrically connectable to a control unit and upon bringing the probe in physical contact with the formation supplying pulses of energy from the control unit to the probe in order to destroy the formation. The invention further comprises counting amount of pulses being supplied to the probe and establishing a remaining service life of the probe by subtracting the amount of pulses being supplied to the probe from an amount of pulses corresponding to initial service life of the probe. The treatment session is automatically terminates as soon as amount of pulses being supplied to the probe approaches at least a fraction of the established remaining service life of the probe. The established remaining service life of the probe is stored for new treatment session. Delivery of pulses automatically terminates when the remaining service life is exhausted and use of such probe becomes impossible.

Claims

1. A system for intra corporeal electro-impulse destruction of an undesirable formation in a mammalian body by applying high voltage pulses of energy immediately to the formation, said system comprising:

a treatment probe insertable into the mammalian body,

a control unit suitable for generation of pulses of energy and for monitoring and controlling their amount as well as their energy and frequency,

a power line for electrical connecting of the treatment probe to the control unit, said power line consisting entirely of a high voltage coaxial cable,

wherein the system is provided with

a memory means which is capable of storing information associated with a service life of the probe, wherein said information comprises at least a probe diameter,

and said control unit is provided with a programmable microcontroller that stores a program for monitoring and controlling the service life of the probe and at least one normalizing coefficient which has been empirically established during supplying pulses of energy to an auxiliary probe

and the system further comprises

a communication link for exchange of information between the control unit and the memory means.

2. A system of claim 1, in which said control unit is capable to supply pulses of energy having duration not more than 5000 nanoseconds, pulse rise time less than 50 nanoseconds, pulse energy at least 0.01 joule and pulse amplitude at least 2 kV.

3. A system of claim 1, comprising a coupler for electrical connection between the probe and the control unit, said coupler is provided with a male portion and with a female portion.

4. A system of claim 1, in which said communication link is a wire link.

5. A system of claim 4, in which said wire link comprises a miniature coaxial cable.

6. A system of claim 3, in which said memory means resides in the male portion of the coupler.

7. A system of claim 1, in which said control unit comprises a source of low voltage, a grounding control circuit, a source of high voltage and a circuit for starting a fast operating switching means.

8. A system of claim 7, in which said fast operating switching means comprises a thyratron.