Systems and methods for performing acoustic hemostasis of deep bleeding trauma in limbs
First Claim
Patent Images
1. An ultrasound applicator, comprising:
- a two-dimensional array of electrostrictive transducer elements; and
at least one diode electrically connected to each transducer element.
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Accused Products
Abstract
An inflatable cuff having integrated ultrasound transducers is used to effect hemostasis of deep bleeding wounds in limbs. The cuff includes a chamber defined by a bladder or a series of dams into which a fluid may be introduced and pressurized. The pressure of the fluid stops or slows bleeding while high intensity focused ultrasound is applied to effect hemostasis. The fluid may also serve as an acoustic couplant between the limb and the ultrasound transducers. The transducers may be electrostrictive transducers. Diodes may be used to reduce parallel capacitive loading in the transducer array. Bypass capacitors using the electrostrictive material may also be used.
58 Citations
25 Claims
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1. An ultrasound applicator, comprising:
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a two-dimensional array of electrostrictive transducer elements; and
at least one diode electrically connected to each transducer element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ultrasound applicator, comprising:
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a plurality of electrostrictive ultrasound transducer elements, each element comprising an electrostrictive material; and
a bypass capacitor electrically connected to at least one element, wherein the bypass capacitor comprises an electrostrictive material between two conductive plates. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of driving an electrostrictive ultrasound transducer array, comprising:
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voltage biasing a first set of selected electrostrictive transducer elements within the array; and
electrically shorting a second set of selected electrostrictive transducer elements within the array. - View Dependent Claims (22, 23, 24, 25)
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Specification