Vena cava filter
First Claim
Patent Images
1. A filter, implantable in a blood vessel solely by sonographic visualization, comprising:
- one or more wires arranged to trap blood clots without substantially interfering with normal blood flow; and
an echogenic feature on at least one wire located in a position which during deployment of the filter remains fixed relative to one end thereof, so the filter position can be accurately determined solely by sonographic visualization.
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Accused Products
Abstract
A vena cava filter and placement set includes features which can be visualized solely utilizing sonography. A method of implanting a vena cava filter employs sonography to enable the surgeon to direct the filter to a desired location and ensure that the filter is properly deployed.
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Citations
20 Claims
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1. A filter, implantable in a blood vessel solely by sonographic visualization, comprising:
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one or more wires arranged to trap blood clots without substantially interfering with normal blood flow; and an echogenic feature on at least one wire located in a position which during deployment of the filter remains fixed relative to one end thereof, so the filter position can be accurately determined solely by sonographic visualization. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of implanting a blood filter in a blood vessel, comprising steps of:
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moving a blood filter having an echogenic feature located in a position which during deployment of the filter remains fixed relative to one end thereof through the blood vessel to an implantation site in the blood vessel; and during the step of moving, visualizing the echogenic feature of the filter and the implantation site sonographically. - View Dependent Claims (15)
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16. A caval filter placement set, comprising:
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a guide wire; a dilator; a sheath for introducing the filter; and a caval filter including one or more wires arranged to trap blood clots without substantially interfering with normal blood flow; and an echogenic feature on at least one wire located in a position which during deployment of the filter remains fixed relative to one end thereof, so the filter position can be accurately determined solely by sonographic visualization. - View Dependent Claims (17, 18, 19, 20)
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Specification