Systems and methods for performing acoustic hemostasis of deep bleeding trauma in limbs
First Claim
Patent Images
1. An ultrasound cuff, comprising:
- an array of ultrasound transducers adapted to be deployed circumferentially around a body limb; and
a pressurizeable bladder positioned on a first side of the array, wherein the cuff is configured such that when the array is deployed circumferentially around the body limb, the bladder is positioned between the array and the body limb.
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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.
114 Citations
59 Claims
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1. An ultrasound cuff, comprising:
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an array of ultrasound transducers adapted to be deployed circumferentially around a body limb; and
a pressurizeable bladder positioned on a first side of the array, wherein the cuff is configured such that when the array is deployed circumferentially around the body limb, the bladder is positioned between the array and the body limb. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An ultrasound cuff, comprising:
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an array of ultrasound transducers having an approximately cylindrical shape; and
a bladder filed with a liquid, the bladder covering the surface of the transducers that are interior to the cylindrical shape. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. An ultrasound cuff, comprising:
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a flexible array of ultrasound transducers adapted to be deployed circumferentially around a body limb;
at least one seal positioned along at least one edge of at least some of the ultrasound transducers, the seal configured to contact the body limb when the array is deployed circumferentially around the body limb such that a space is maintained between the body limb and the at least some transducers. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A method of effecting hemostasis in a wound in a limb, the method comprising:
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placing an inflatable cuff with integrated ultrasound transducers around the limb;
inflating the cuff; and
applying high intensity focused ultrasound sufficient to effect hemostasis with the transducers. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A method of effecting hemostasis in a wound in a limb, the method comprising:
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placing a tourniquet on the limb;
placing a cuff with integrated ultrasound transducers around the limb;
applying high intensity focused ultrasound sufficient to effect hemostasis with the transducers.
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53. An ultrasound applicator patch, comprising:
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an array of ultrasound transducers;
sidewalls disposed around the perimeter of the array, wherein the sidewalls define a space over the ultrasound transducers; and
an inlet port in the sidewalls or the array configured to allow introduction of a fluid into the space. - View Dependent Claims (54, 55, 56)
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57. An ultrasound applicator patch, comprising:
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an array of ultrasound transducers; and
a pressurizeable bladder positioned on a first side of the array, wherein the cuff is configured such that when the array is deployed on the wound, the bladder is positioned between the array and the wound. - View Dependent Claims (58, 59)
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Specification