Method and apparatus for capturing objects beyond an operative site in medical procedures
First Claim
1. An apparatus for removing a solid object from a body canal or vessel, the apparatus comprising:
- a containment collar;
a pull wire connected to the containment collar;
a sack having a mouth and a closed bottom opposite the mouth;
a guide wire received in the containment collar, the guide wire projecting through the mouth of the sack and connected to the closed bottom of the sack; and
a resilient frame connected between the guide wire and the mouth of the sack for biasing the mouth of the sack open around the guide wire, wherein, in response to relative movement between the guide wire and the pull wire, the resilient frame is positionable between a collapsed state inside the containment collar where the mouth of the sack is closed against the bias of the resilient frame by interaction of the resilient frame with the inside of the containment collar and a deployed state outside the containment collar where the mouth of the sack is biased open by the resilient frame.
1 Assignment
0 Petitions
Accused Products
Abstract
A device (2) for capturing and removing one or more particles (58) from a body canal or vessel includes a sack (12) having a mouth (14) and a closed bottom (16) opposite mouth (14). A guide wire (4) is received through mouth (14) of sack (12) and is connected to closed bottom (16) of sack (12). A collapsible frame (8) is connected between guide wire (4) and mouth (14) of sack (12), with collapsible frame (8) biasing mouth (14) of sack (12) opened around guide wire (4). A containment collar (32) slidably receives guide wire (4), collapsible frame (8), and at least part of sack (12) therein. A pull wire (34) is connected to containment collar (32). In response to relative movement between guide wire (4) and pull wire (34), collapsible frame (8) moves from inside containment collar (32) where mouth (14) of sack (12) is closed and outside containment collar (32) where mouth (14) of sack (12) is biased open by collapsible flame (8). Containment collar (32) has an axial length configured to be positioned entirely in a body and pull wire (34) has an axial length configured to extend from outside the body to containment collar (32) when it is positioned entirely in the body. Containment collar (32) can be removed from guide wire (4) by pulling pull wire (34) relative to guide wire (4) sufficiently that containment collar (32) is withdrawn from the body and from the end of guide wire (4) opposite collapsible frame (8).
211 Citations
26 Claims
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1. An apparatus for removing a solid object from a body canal or vessel, the apparatus comprising:
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a containment collar;
a pull wire connected to the containment collar;
a sack having a mouth and a closed bottom opposite the mouth;
a guide wire received in the containment collar, the guide wire projecting through the mouth of the sack and connected to the closed bottom of the sack; and
a resilient frame connected between the guide wire and the mouth of the sack for biasing the mouth of the sack open around the guide wire, wherein, in response to relative movement between the guide wire and the pull wire, the resilient frame is positionable between a collapsed state inside the containment collar where the mouth of the sack is closed against the bias of the resilient frame by interaction of the resilient frame with the inside of the containment collar and a deployed state outside the containment collar where the mouth of the sack is biased open by the resilient frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for capturing and removing one or more particles, the device comprising:
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a sack;
a guide wire;
a collapsible frame connected between the guide wire and the sack, the collapsible frame biasing the sack open around the guide wire;
a containment collar which slidably receives the guide wire therein; and
a pull wire connected to the containment collar, wherein, in response to relative movement between the guide wire and the pull wire, the collapsible frame moves from inside the containment collar where the sack is closed and outside the containment collar where the sack is biased open by the collapsible frame. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for capturing and removing particles from a vessel, the method comprising the steps of:
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(a) providing a guide wire having connected at or adjacent its distal end a collapsible filter, a containment collar received on the guide wire with at least a part of the collapsible filter received inside the containment collar in a collapsed state, and a pull wire connected at or adjacent its distal end to the containment collar;
(b) introducing the containment collar with at least the part of the collapsible filter received therein into a body canal or vessel via an access opening;
(c) positioning the containment collar at a desired location in the body canal or vessel, with the guide wire and the pull wire extending from at or adjacent the desired location through the access opening; and
(d) moving the pull wire relative to the guide wire whereby the containment collar moves relative to the guide wire in a direction opposite the distal end of the guide wire and the part of the collapsible filter expands to a deployed state. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification