DEVICE FOR THE VOLUME TREATMENT OF BIOLOGICAL TISSUE

• US 20090326420A1
• Filed: 08/13/2007
• Published: 12/31/2009
• Est. Priority Date: 08/29/2006
• Status: Abandoned Application

• Current Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Original Assignee: Koninklijke Philips Electronics N.V. (Koninklijke Philips N.V.)
• Inventors: Moonen, Chrétien, Mougenot, Charles
• Application Number:
  US12/438,934
• Publication Number:
  US 20090326420A1
• Time in Patent Office: Days
• US Class Current: 601/3
• CPC Class Codes: A61B 2017/00084 Temperature
• CPC Class Codes: A61B 2090/374 NMR or MRI
• CPC Class Codes: A61B 34/10 Computer-aided planning, simulation or modelling of surgical operations
• CPC Class Codes: A61N 2007/0065 Concave transducers
• CPC Class Codes: A61N 7/02 Localised ultrasound hyperthermia hyperthermia in general A61F7/00

Abstract

The invention relates to a device for the heat treatment of a target region of a biological tissue, comprising: energy generator means for delivering energy to a focal point (P) in the target region; means for measuring the spatial temperature distribution in said region; a control unit comprising means for controlling the displacement of the focal point (P) towards successive treatment points and means for controlling the energy to be delivered by the generator means to the successive treatment points, characterized in that the control unit further includes means for determining a spatial and energy distribution of the treatment points where treatment is to be carried out, each successive treatment point having a position and a treatment energy that are determined according to the positions and spatial and energy distributions of the previous treatment points. The invention also relates to the associated heat treatment method.

Claims

1. A thermal treatment device to treat a target region of a biological tissue, comprising:

energy generating means (3,4) to supply energy to a focal point (P) in the target region,

means (2) to measure the spatial distribution of temperature in said region,

a control unit (7) comprising means to control moving of the focal point (P) towards successive treatment points, and means to control the energy to be provided by the generator means (3,4) to the successive treatment points,

wherein the control unit (7) further comprises means to determine a spatial and energy distribution of the treatment points to be performed, each successive treatment point having a determined position and treatment energy in relation to the positions and spatial energy distributions of the previous treatment points.

2. The device of claim 1, wherein the spatial distribution of the treatment points is three-dimensional.

3. The device of claim 1, wherein the control unit comprises means to determine the spatial and energy distribution of the treatment points to be performed in relation to a spatial distribution of required energy defined by a temperature regulation system to treat the target region.

4. The device of claim 3, wherein the control unit comprises means to determine the spatial distribution of required energy to treat the target region according to a Proportional-Integral-Derivative regulation system.

5. The device of claim 3, wherein the means to determine the spatial and energy distribution of the treatment points to be performed comprise deconvolution means of the spatial distribution of required energy to treat the target region, using a spatial energy distribution characteristic of one treatment point.

6. The device of any of claim 3, wherein the means to determine the spatial and energy distribution of the treatment points to be performed comprise means to determine the treatment point corresponding to the maximum spatial distribution of remaining energy to treat the target region, the spatial distribution of remaining energy corresponding to the spatial distribution of energy required to treat the target region subtracted by the spatial energy distributions characteristic of the previous treatment points.

7. The device of claim 6, wherein the control unit comprises means to determine the spatial and energy distribution of the treatment points to be performed, such that:

8. The device of claim 1, wherein the control unit comprises means to control the energy supplied by the energy generating means in relation to a non-uniform temperature set point.

9. The device of claim 1, wherein the control unit comprises means to control the energy supplied by the energy generating means in relation to a time-shifted temperature set point for each treatment point.

10. A thermal treatment method to treat a target region of a biological tissue, comprising the steps of:

measuring the spatial temperature distribution in said region,

controlling movement of a focal point (P) towards successive treatment points in the target region,

providing energy to the focal point (P),

characterized in that it further comprises a step of determining a spatial and energy distribution of the treatment points to be performed, each successive treatment point having a position and a treatment energy determined in relation to the positions and spatial energy distributions of the previous treatment points.