Ultrasound transducer device for continuous imaging of the heart and other body parts

• US 5,598,845 A
• Filed: 11/16/1995
• Issued: 02/04/1997
• Est. Priority Date: 11/16/1995
• Status: Expired due to Term

• Current Assignee: Stellartech Research Corporation
• Original Assignee: Stellartech Research Corporation
• Inventors: Chandraratna, P. Anthony, Stern, Roger A.
• Primary Examiner(s): MANUEL, GEORGE C
• Application Number:
  US08/558,503
• Time in Patent Office: 446 Days
• Field of Search: 128/662.03, 128/639, 128/640, 128/660.01, 128/660.09, 128/660.1
• US Class Current: 600/459
• CPC Class Codes: A61B 8/08 Detecting organic movements or changes, e.g. tumours, cysts, swellings A61B8/02 - A61B8/06 take precedence
• CPC Class Codes: A61B 8/0883 for diagnosis of the heart
• CPC Class Codes: A61B 8/4209 by using holders, e.g. positioning frames
• CPC Class Codes: A61B 8/4236 characterised by adhesive patches
• CPC Class Codes: A61B 8/4281 characterised by sound-transmitting media or devices for coupling the transducer to the tissue
• CPC Class Codes: A61B 8/582 Remote testing of the device

Abstract

An ultrasound transducer device is disclosed which is intended to be used for continuous imaging of a patient'"'"'s heart or other body organs for diagnosis or monitoring. The device consists of a spherical transducer assembly held by a patch which is coated with adhesive for attaching to the body surface of a patient. Provision is made for the manual adjustment of the orientation of the transducer assembly while in place on a patient to adjust the area scanned by the transducer. An alternate embodiment of the device discloses provision for remote controlled adjustment of the transducer assembly orientation.

Claims

1. An ultrasound transducer device for attachment to a surface of the body of a patient, and for providing continuous imaging of organs inside said body surface, said transducer device comprising:

(a) a transducer assembly including

a transducer enclosure;

supporting means for mounting an ultrasound transducer means inside said enclosure;

ultrasound transducer means mounted on said supporting means for transmitting and receiving ultrasound beams from which to create scan lines forming an image of a surface on an organ inside said body surface; and

conductor means for providing electrical signal connections between said transducer means and externally located transducer scanner and display equipment;

(b) a holding pad defining an opening;

(c) means for attaching said holding pad to a surface of the body of a patient; and

(d) means for movably securing said transducer enclosure to said holding pad such that said transducer enclosure protrudes through said opening, and enabling said transducer enclosure to be rotated to adjust the imaging surface scanned by said ultrasound transducer means while said transducer enclosure is in place against the body surface of a patient, and to provide continuous scanning.

2. The ultrasound transducer device recited in claim 1, wherein said transducer enclosure is shaped semi-spherically with a transmission surface protruding through said opening, and a substantially flat cover surface opposite said transmission surface, and has a low profile in the direction between said cover surface and said transmission surface.

3. The ultrasound transducer device recited in claim 2, wherein said enclosure comprises a stub portion which projects from said cover surface, facilitating manual adjustment of the orientation of said transducer enclosure relative to said pad.

4. The ultrasound transducer device according to claim 1, wherein said conductor means comprises coaxial cable.

5. The ultrasound transducer device according to claim 1, wherein said conductor means comprises a twisted pair of insulated wires.

6. The ultrasound transducer device according to claim 1, wherein said means for movably securing said transducer enclosure includes an annular axially projecting collar attached to said holding pad and having a concave inside surface over said opening and sized to fit closely around and grip the outside surface, while also permitting manual adjustment of the orientation, of said transducer enclosure.

7. An ultrasound transducer device for attachment to a surface of the body of a patient, and for providing continuous imaging of organs inside said body surface, said transducer device comprising:

(a) a transducer assembly including

a transducer enclosure;

supporting means for mounting an ultrasound transducer means inside said enclosure;

ultrasound transducer means, mounted on said supporting means for transmitting and receiving ultrasound beams from which to create scan lines forming an image of a surface on an organ inside said body surface; and

conductor means for providing electrical signal connections between said transducer means and externally located transducer scanner and display equipment;

(b) a holding pad defining an opening;

(c) means for attaching said holding pad to a surface of the body of a patient;

(d) means for rotatably securing said transducer enclosure to said holding pad; and

(e) means for remotely adjusting the orientation of said transducer enclosure relative to said holding pad;

said transducer enclosure protruding through said opening;

said means for remotely adjusting the orientation of said transducer enclosure serving to adjust the location of the imaging surface scanned by said ultrasound transducer means while said transducer enclosure is in place against the body surface of a patient and providing continuous imaging of an organ inside said body surface.

8. The ultrasound transducer device recited in claim 7, wherein said transducer enclosure is shaped semi-spherically with a transmission surface protruding through said opening, and a substantially flat cover surface opposite said transmission surface.

9. The ultrasound transducer device recited in claim 7, wherein said means for remotely adjusting includes an adjustment assembly mounted on said means for rotatably securing and adjacent said transducer enclosure opposite said pad,

said adjustment assembly including a cylindrical member and three pin members, said cylindrical member being open at its lower end and having a thick upper end cap and short, rigid circumferential walls, said upper end cap including three holes disposed approximately 120 degrees apart and sized to accommodate a pin member;

said pin members projecting against said transducer enclosure and facilitating remotely adjusting the orientation of said transducer enclosure by a person or by a mechanism pushing on one or more of said pins, thereby causing said transducer enclosure to rotate to another position and adjust said surface of an organ scanned by said ultrasound transducer means.

10. The ultrasound transducer device according to claim 7, wherein said conductor means comprises coaxial cable.

11. The ultrasound transducer device according to claim 7, wherein said conductor means comprises a twisted pair of insulated wires.

12. The ultrasound transducer device according to claim 7, wherein said means for rotatably securing said transducer enclosure includes an annular axially projecting collar attached to said holding pad and

having a concave inside surface over said opening and sized to fit closely around and grip the outside surface, while also permitting manual adjustment of the orientation, of said transducer enclosure.

13. An ultrasound transducer holder comprising:

a holding pad having

a surface attachable to a human body,

an opening through said pad, and

a socket defining a holding space disposed around said opening; and

a transducer assembly including an enclosure which houses an ultrasound transducer and is disposed in said holding space and frictionally held by said socket such that the orientation of said enclosure may be adjusted about an axis parallel to said surface;

whereby said transducer may be directed to communicate ultrasonically with a body part positioned close to said opening.

14. The holder of claim 13 further comprising adhesive disposed on said surface.

15. The holder of claim 14 wherein said adhesive comprises an adhesive patch having an area greater than that of said surface.

16. The holder of claim 14 wherein said surface is attachable to a chest wall.

17. The holder of claim 16 wherein said surface is shaped to fit against an intercostal space.

18. The holder of claim 13 wherein said transducer holder has a low profile in the direction normal to said surface.

19. The holder of claim 18 wherein said assembly further comprises a cover disposed on said enclosure.

20. The holder of claim 19 wherein said holding pad further comprises an adjusting assembly for adjusting the orientation of said enclosure with respect to said surface.

21. The holder of claim 19 wherein said adjusting assembly further comprises actuator means for acting on said enclosure.

22. The holder of claim 21 wherein said actuator means comprises a plurality of pins.

23. The holder of claim 13 wherein said surface lies substantially in a plane.

24. The holder of claim 23 wherein said enclosure can be turned around any axis parallel to said plane.

25. The holder of claim 24 wherein said enclosure can be mined around an axis perpendicular to said plane.

26. The holder of claim 25 wherein said holding space is spherical and said enclosure is semi-spherical. spherical.

27. The holder of claim 26 wherein said spherical holding space extends through said opening.

28. The holder of claim 27 wherein said opening is a circular hole.

29. The holder of claim 26 wherein said holding pad comprises a collar which forms said surface and a ring portion with a concave surface corresponding to a zone of a sphere which forms said socket.

30. The holder of claim 29 wherein said concave surface is roughened.