Medical retrieval device
First Claim
Patent Images
1. A medical retrieval device comprising:
- an elongated shaft including a distal end;
a cage having a distal end and a proximal end, the proximal end of the cage coupled to the distal end of the shaft, the cage including an inner surface defining a lumen and at least one internal migration barrier,wherein the at least one internal migration barrier comprises an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage.
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Abstract
Alternative designs, materials and manufacturing methods for medical retrieval devices. Some embodiments pertain to a medical retrieval device including a cage having internal migration barriers therein. Some embodiments pertain to a medical retrieval device including a cage having variable diameters along the length thereof. Several alternative medical retrieval devices constructions and/or designs including methods and techniques of construction are also disclosed.
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Citations
24 Claims
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1. A medical retrieval device comprising:
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an elongated shaft including a distal end; a cage having a distal end and a proximal end, the proximal end of the cage coupled to the distal end of the shaft, the cage including an inner surface defining a lumen and at least one internal migration barrier, wherein the at least one internal migration barrier comprises an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A medical retrieval device comprising:
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an elongated shaft including a distal end; and a tubular cage coupled to the distal end of the shaft, the cage adapted to be expandable from a first configuration sized for intracorporal insertion, to a second, expanded configuration wherein at least a portion of the cage has a larger outer diameter than when in the first configuration; wherein the tubular cage includes one or more internal migration barriers comprising an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage; and wherein when the cage is in the first configuration, it includes a portion having a generally constant outer diameter, and when the cage is in the second configuration, the portion expands such that it includes a first expanded region having a first outer diameter and a second expanded region having a second outer diameter different from the first expanded outer diameter. - View Dependent Claims (18, 19, 20)
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21. A medical retrieval device comprising:
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an elongated shaft including a distal end; a tubular cage coupled to the distal end of the shaft, the cage including structure defining an exterior surface, an inner surface, and one or more interstitial spaces that extend through the structure from the exterior surface to the inner surface, wherein the spaces are in the range of about 500 microns or greater; and wherein the tubular cage includes one or more internal migration barriers comprising an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage. - View Dependent Claims (22)
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23. A method of making a medical retrieval device, the method comprising:
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providing an elongated shaft including a distal end; providing a cage having a distal end and a proximal end, the cage including an inner surface defining a lumen, the cage including at least one internal migration barrier extending from the inner surface of the cage into the lumen, the internal migration barrier comprising an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage; and coupling the proximal end of the cage to the distal end of the shaft.
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24. A method of removing a body from within the vasculature of a patient, the method comprising:
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providing a medical retrieval device including; an elongated shaft including a distal end; a cage having a distal end and a proximal end, the proximal end of the cage coupled to the distal end of the shaft, the cage including an inner surface defining a lumen, the cage including at least one internal migration barrier extending from the inner surface of the cage into the lumen, the internal migration barrier comprising an attached end and a free end, the attached end attached to an inside surface of the cage and the free end extending inwardly toward a longitudinal axis of the cage and proximally toward the proximal end of the cage; disposing the cage of the medical retrieval device within a delivery catheter; advancing the delivery catheter to a site within the anatomy that is proximal to the body to be removed; extending the cage of the medical retrieval device from within the delivery catheter; advancing the cage of the medical retrieval device such that at least a portion of the body is disposed within the lumen; and removing the cage including the body from the anatomy of the patient.
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Specification