Simultaneous side-and-end viewing underfluid catheter

• US 6,059,731 A
• Filed: 08/19/1998
• Issued: 05/09/2000
• Est. Priority Date: 08/19/1998
• Status: Expired due to Term

• Current Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Original Assignee: Mayo Foundation For Medical Education And Research (Mayo Clinic)
• Inventors: Seward, James Bernard, Packer, Douglas L.
• Primary Examiner(s): Jaworski, Francis J.
• Assistant Examiner(s): Imam, Ali M.
• Application Number:
  US09/136,276
• Time in Patent Office: 629 Days
• Field of Search: 600/459, 600/444, 600/447, 600/463, 600/467, 600/473, 600/585, 600/466, 600/454, 600/468, 606/7, 606/15, 606/17, 607/89
• US Class Current: 600/459
• 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 8/4488 the transducer being a phased array
• CPC Class Codes: A61B 8/4494 characterised by the arrangement of the transducer elements devices for short-range imaging using particular transducer elements arrangements under G01S15/8909; arrangements of transducers in generation of mechanical vibrations of infrasonic, sonic or ultrasonic frequency B06B1/0607

Abstract

A simultaneous side-and-end viewing ultrasound imaging catheter system includes at least one side array and at least one end array. Each of the arrays has at least one row of ultrasonic transducer elements. The elements are operable as a single ultrasound transducer which are phased to produce a field of side-and-end view. A multiplanar omnidirectional field of side-and-end view can also be formed when there are a plurality of side arrays and end arrays mounted on the catheter body. In certain applications, the output of each array or a portion of an array can be separately displayed and/or interrogated so as to provide better navigational and therapeutic visual aids.

Claims

1. A catheter apparatus, comprising:

an elongated flexible catheter body having a longitudinal axis;

a first ultrasonic transducer side array having a row of ultrasonic transducer elements longitudinally mounted on the body along a first side of the body;

an ultrasonic transducer end array having at least two rows of ultrasonic transducer elements mounted on the body at a forward end of the body;

a second ultrasonic transducer side array having a row of ultrasonic transducer elements longitudinally mounted on the body along a second side of the body; and

wherein the first ultrasonic transducer side array and the ultrasonic transducer end array are disposed in a first plane, the second ultrasonic transducer side array and the ultrasonic transducer end array are disposed in a second plane, the ultrasonic transducer elements of the first and second side arrays and the end array being operable as a single ultrasound transducer which are phased to produce a field of multi-planar side-and-end view.

2. A catheter apparatus of claim 1, wherein the ultrasonic transducer side and end arrays include a piezoelectric polymer material.

3. A catheter apparatus of claim 1, wherein the ultrasonic transducer side and end arrays include a polyvinylidenedifloride (PVDF) material.

4. A catheter apparatus of claim 1, wherein the ultrasonic transducer side and end arrays are sector phased arrays.

5. A catheter apparatus of claim 1, wherein the catheter body has a diameter of 4 to 15 French.

6. A catheter apparatus of claim 1, wherein the catheter body has a length 20 to 120 cm.

7. A catheter apparatus of claim 1, further comprising a third ultrasonic transducer side array having a row of ultrasonic transducer elements longitudinally mounted on the body along a third side of the body, wherein the third ultrasonic transducer side array, the first ultrasonic transducer side array, and the ultrasonic transducer end array are disposed in the first plane, the ultrasonic transducer elements of the first, second, and third side arrays and the end array are operable as a single ultrasound transducer.

8. A catheter apparatus of claim 7, further comprising a plurality of ultrasonic transducer side arrays to form a plurality of planes, wherein the ultrasonic transducer elements of the ultrasonic transducer side and end arrays are operable as a single ultrasound transducer which are phased to produce a multi-planar omnidirectional field of view.