Temporary vascular filter
First Claim
1. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
- a guidewire having a distal region and a stop on the distal region; and
a filter element configured to rotate and translate on the guidewire, the filter element having a proximal end and a distal end,wherein the stop is disposed intermediate the proximal and distal ends of the filter element.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention provides a method of deploying a medical filter within a channel in a patient'"'"'s body and filter systems which can be used in such a method. Such a filter may include a radially expandable body 52 having an opening 56 in a proximal length thereof. In one method, the filter is urged along a length of the channel with the filter body in a radially reduced configuration. This body is expanded to substantially fill the lumen of the vessel and orient the opening in the body proximally. Body fluid is permitted to enter the filter body through the proximally oriented opening and pass distally through the distal length of the body so that the distal length of the body filters from the body fluid particulate material entrained therein. The proximal length of the body can be drawn into the retrieval catheter, thereby effectively closing the proximally oriented opening within the catheter to retain the particulate material within the enclosure. In a preferred embodiment, the filter body 52 is formed of a porous, resilient fabric having pores therein and the proximal opening 56 is at least five times the size of such pores.
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Citations
24 Claims
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1. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a guidewire having a distal region and a stop on the distal region; and a filter element configured to rotate and translate on the guidewire, the filter element having a proximal end and a distal end, wherein the stop is disposed intermediate the proximal and distal ends of the filter element.
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2. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a guidewire having a distal region and a stop on the distal region; and a filter element having a proximal coupling slidably coupled to the guidewire proximal of the stop and a distal coupling slidably coupled to the guidewire distal of the stop; wherein the stop restricts translation of the filter element along the guidewire. - View Dependent Claims (3, 4, 5)
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6. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a guidewire having a diameter and a distal region; a filter element including a proximal ring slidably coupled to the guidewire and a distal ring slidably coupled to the guidewire, the proximal ring having a bore greater than the diameter of the guidewire and the distal ring having a bore greater than the diameter of the guidewire; and a stop disposed on the distal region of the guidewire intermediate the proximal ring and the distal ring. - View Dependent Claims (7, 8, 9, 10)
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11. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a mandrel having a distal end and a stop spaced proximally of the distal end; and a vascular filter configured to rotate and translate on the mandrel, the vascular filter having a proximal end and a distal end, wherein the stop is disposed intermediate the proximal and distal ends of the vascular filter. - View Dependent Claims (12, 13, 14)
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15. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a mandrel having a distal end and a stop spaced proximally of the distal end; and a vascular filter having a proximal slider coupled to the mandrel proximal of the stop and a distal slider coupled to the mandrel distal of the stop; wherein the stop restricts translation of the vascular filter along the mandrel. - View Dependent Claims (16, 17, 18)
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19. An apparatus for filtering emboli from blood flowing through a vessel, the apparatus comprising:
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a mandrel having a diameter and a distal region; a vascular filter including a proximal slider coupled to the mandrel and a distal slider coupled to the mandrel, the proximal slider having a bore greater than the diameter of the mandrel and the distal slider having a bore greater than the diameter of the mandrel; and a stop disposed on the distal region of the mandrel intermediate the proximal slider and the distal slider. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification