IP Library › Granted Patent US 7,652,411
Granted Patent B2
US 7,652,411 · App. 11/532,745 · Granted Jan 26, 2010

Transducer with shield

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Quick Facts
Patent No.
US 7,652,411
App. No.
11/532,745
Granted
Jan 26, 2010
Kind
B2
Abstract

A physical shield placed on the face of a high intensity focused ultrasound transducer for medical applications is described. The shield may be shaped or angled to match a particular pattern of mechanical or acoustic energy that may damage the transducer during operation. The shield may be ablative, replaceable or modified as needed. Methods of manufacturing a transducer with a shield are also disclosed.

Claims (13)

1. A shielded medical high intensity focused ultrasound transducer having a front side and a back side, and a shield attached to said front side, wherein said transducer has an actively driven region, and a substantially non-driven region, wherein the substantially non-driven region is at least partially covered by said shield, further comprising a nonconductive filler material between said non-driven region(s) and said actively driven region(s).

2. The transducer of claim 1 , wherein said actively driven region is concentric around said non-driven region.

3. The transducer of claim 1 , wherein the shield is made of a polymer.

4. The transducer of claim 1 , wherein said substantially inactive region consists of one or more non piezoelectric material(s).

5. The transducer of claim 1 , wherein the shield is substantially centrally positioned on said front side.

6. The transducer of claim 1 , wherein the shield is axially positioned behind said front side.

7. The transducer of claim 1 , wherein the shield is dimensioned to substantially protect said front side from damage when said transducer is excited.

8. The transducer of claim 1 , wherein the shield is ablative.

9. The transducer of claim 1 , wherein the shield is absorptive.

10. The transducer of claim 1 , wherein the shield is replaceable.

11. The transducer of claim 1 , wherein the shield is made of an alloy.

12. The transducer as described in claim 1 , further comprising at least one additional non-driven inactive region with a shield.

13. The transducer as described in claim 1 , wherein said shield is formed from two or more different materials.

Assignments (7)
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jan 24, 2014
From: CAPITAL ROYALTY PARTNERS II L.P.; CAPITAL ROYALTY PARTNERS II - PARALLEL FUND "A" L.P.; PARALLEL INVESTMENT OPPORTUNITIES PARTNERS II L.P.
To: LIPOSONIX, INC.
Reel/Frame 032126/0370 →
RELEASE OF SECURITY INTEREST IN PATENTS Recorded Jan 24, 2014
From: SILICON VALLEY BANK
To: LIPOSONIX, INC.
Reel/Frame 032126/0531 →
SHORT-FORM PATENT SECURITY AGREEMENT Recorded Nov 19, 2013
From: LIPOSONIX, INC.
To: CAPITAL ROYALTY PARTNERS II - PARALLEL FUND "A" L.P.; CAPITAL ROYALTY PARTNERS II L.P.; PARALLEL INVESTMENT OPPORTUNITIES PARTNERS II L.P.
Reel/Frame 031674/0454 →
SECURITY INTEREST - MEZZANINE LOAN Recorded Apr 18, 2013
From: LIPOSONIX, INC.
To: SILICON VALLEY BANK
Reel/Frame 030249/0268 →
SECURITY AGREEMENT Recorded Apr 3, 2013
From: LIPOSONIX, INC.
To: SILICON VALLEY BANK
Reel/Frame 030147/0642 →
CHANGE OF NAME Recorded Apr 24, 2009
From: LIPOSONIX, INC.
To: MEDICIS TECHNOLOGIES CORPORATION
Reel/Frame 022597/0363 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 6, 2006
From: CRUNKILTON, JEFFREY R.; DESILETS, CHARLES S.; DARLINGTON, GREG P.; QUISTGAARD, JENS U.
To: LIPOSONIX, INC.
Reel/Frame 018592/0350 →