Localization and therapy system for treatment of spatially oriented focal disease

• US 4,858,613 A
• Filed: 03/02/1988
• Issued: 08/22/1989
• Est. Priority Date: 03/02/1988
• Status: Expired due to Term

• Current Assignee: Laboratory Equipment Corporation
• Original Assignee: Laboratory Equipment Corporation
• Inventors: Sanghvi, Narendra T., Fry, Francis J.
• Primary Examiner(s): Jaworski, Francis
• Application Number:
  US07/163,259
• Time in Patent Office: 538 Days
• Field of Search: 128/24 A, 128/328, 128/660.03, 128/660.08-660.10
• US Class Current: 600/439
• 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 17/2258 integrated in a central portion of the shock wave apparatus
• CPC Class Codes: A61B 2017/22021 electric leads passing through the catheter
• CPC Class Codes: A61B 2017/2253 using a coupling gel or liquid
• CPC Class Codes: A61B 2090/3788 transmitter only
• CPC Class Codes: A61B 8/0808 for diagnosis of the brain
• CPC Class Codes: A61B 8/0833 involving detecting or locating foreign bodies or organic structures
• CPC Class Codes: A61B 8/12 in body cavities or body tracts, e.g. by using catheters catheters per se A61M25/00
• CPC Class Codes: A61B 8/445 Details of catheter construction
• CPC Class Codes: A61B 8/4461 Features of the scanning mechanism, e.g. for moving the transducer within the housing of the probe
• CPC Class Codes: A61N 7/02 Localised ultrasound hyperthermia hyperthermia in general A61F7/00
• CPC Class Codes: A61N 7/022 intracavitary
• CPC Class Codes: G10K 11/35 using mechanical steering of transducers or their beams

Abstract

A transducer assembly for visualization and treatment of transcutaneous and intraoperative sites includes in combination a visualization transducer and a treatment transducer, each of which are movable with both linear and rotary degrees of freedom. Movement of each transducer is by various motor and geared drive arrangements wherein certain degrees of freedom for one transducer are separate and independent from the degrees of freedom for the other transducer. At least one degree of freedom for each transducer is common and the transducers are moved concurrently.

One arrangement of the transducer combination is for prostate treatment and includes a specific shape and configuration for anatomical considerations and a control unit which is operable external to the patient to control both transducers and a reflective scanner which are inserted into the patient as part of the ultrasound probe.

Claims

1. An ultrasound imaging and treatment device for use in the treatment of a patient by means of ultrasound energy, said device comprising:

an enclosed transducer housing designed and arranged to be positionable onto the patient;

a visualization transducer disposed within said housing and movable relative to said housing;

a treatment transducer disposed within said housing and movable relative to said housing;

first drive means for imparting linear motion to said treatment transducer relative to said housing;

second drive means for imparting rotary motion to said treatment transducer relative to said housing; and

third drive means for imparting rotary sector motion to said visualization transducer relative to said housing.

2. The device of claim 1 wherein said first drive means includes a rack and pinion gearing arrangement.

3. The device of claim 1 wherein said second drive means includes a ring and pinion gearing arrangement.

4. The device of claim 1 wherein said third drive means includes a motor-driven bevel gear arrangement.

5. The device of claim 4 wherein said second drive means includes a ring and pinion gearing arrangement.

6. The device of claim 5 wherein said first drive means includes a rack and pinion gearing arrangement.

7. The device of claim 1 which further includes fourth drive means for imparting a second type of rotary motion to said treatment transducer.

8. The device of claim 1 wherein said treatment transducer and said visualization transducer each have a focal axis for the ultrasound which is emitted and each are positionable such that their respective focal axes are coaxial with each other.

9. The device of claim 1 wherein said enclosed transducer housing is configured into two portions, one portion being fluid-filled and detachable from the other portion.

10. The device of claim 9 wherein said treatment transducer and said visualization transducer are disposed entirely within said fluid-filled, detachable portion.

11. An ultrasound imaging and treatment device for use in the examination and treatment of the prostate by means of ultrasound energy, said device comprising:

an enclosed, fluid-filled, flexible-walled probe which is sized and shaped so as to be insertable into a patient'"'"'s rectum;

a visualization transducer disposed within said probe and movable relative to said probe;

a treatment transducer designed to generate an ultrasound beam and disposed within said probe and movable relative to said probe;

first drive means providing rotary motion to said treatment transducer relative to said probe;

second drive means providing linear motion to said visualization transducer relative to said probe; and

said first and second drive means being operable independently of each other.

12. The device of claim 11 which further includes reflective scanning means disposed within said probe and aligned with said treatment transducer for changing the direction of the ultrasound beam emitted from said treatment transducer.

13. The device of claim 12 which further includes third drive means providing rotary motion to said visualization transducer and to said treatment transducer concurrently.

14. The device of claim 13 wherein said second drive means includes a geared drive arrangement.

15. The device of claim 11 which further includes third drive means providing rotary motion to said visualization transducer and to said treatment transducer concurrently.