Temporary inflatable filter device and method of use
First Claim
1. A temporary filter device for providing filtration within a tubular structure in the human body comprising:
- a) a catheter having a longitudinal axis, a proximal portion and a distal portion;
b) said catheter having an inflation lumen extending longitudinally therethrough with ports in the proximal and distal portions of the catheter;
c) an inflatable cuff of generally hollow cylindrical configuration, said cuff directly permanently attached near to the distal end of said catheter so that when said cuff is in an inflated condition, the catheter may be used to hold the cuff in position within the tubular structure so that cuff contact with the tubular structure is minimized;
d) said cuff in fluid communication with the inflation lumen port in the distal portion of the catheter;
e) a filter attached to the inflatable cuff for deployment when said cuff is inflated so that any fluid traveling past the cuff passes through the filter;
f) means for inflating and deflating the cuff with inflation material; and
g) a valve for maintaining said cuff in an inflated condition for a desired time period.
1 Assignment
0 Petitions
Accused Products
Abstract
A temporary inflatable filter device, and method of use, particularly suited to filtration of the inferior vena cava is disclosed. The device features a catheter with an inflatable cuff at one end with a mesh filter spanning the cuff'"'"'s aperture. During insertion into the vena cava, the cuff is deflated and, along with the filter, is wrapped about the catheter. The catheter features a central lumen passing through its longitudinal axis. The central lumen receives a guidewire upon which the catheter may travel. Upon removal of the guidewire, the central lumen may be used as a means for delivering medicated fluids and the like into the vena cava. An inflation lumen runs parallel to the central lumen and is used for the inflation and deflation of the inflatable cuff. A filament runs through a third catheter lumen that is parallel with the other two lumina. One end of the filament is attached to the cuff while the other may be manipulated by the operator so as to allow adjustment of the orientation of the cuff and filter in the vena cava. Tensioning of the filament closes the aperture of the cuff and the opening of the filter so as to trap objects that have become lodged in the filter for removal from the vena cava.
530 Citations
21 Claims
-
1. A temporary filter device for providing filtration within a tubular structure in the human body comprising:
-
a) a catheter having a longitudinal axis, a proximal portion and a distal portion; b) said catheter having an inflation lumen extending longitudinally therethrough with ports in the proximal and distal portions of the catheter; c) an inflatable cuff of generally hollow cylindrical configuration, said cuff directly permanently attached near to the distal end of said catheter so that when said cuff is in an inflated condition, the catheter may be used to hold the cuff in position within the tubular structure so that cuff contact with the tubular structure is minimized; d) said cuff in fluid communication with the inflation lumen port in the distal portion of the catheter; e) a filter attached to the inflatable cuff for deployment when said cuff is inflated so that any fluid traveling past the cuff passes through the filter; f) means for inflating and deflating the cuff with inflation material; and g) a valve for maintaining said cuff in an inflated condition for a desired time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A temporary filter device for providing filtration within a tubular structure in the human body comprising:
-
a) a catheter having a longitudinal axis, a proximal portion and a distal portion; b) said catheter having a central lumen extending therethrough coaxially with the longitudinal axis of said catheter and having ports in the proximal and distal portions of the catheter so that said central lumen may slidingly receive a guidewire along which said catheter may travel; c) said catheter having an inflation lumen extending longitudinally therethrough with ports in the proximal and distal portions of the catheter; d) an inflatable cuff of generally hollow cylindrical configuration, said cuff directly permanently attached near to the distal end of said catheter so that when said cuff is in an inflated condition, the catheter may be used to hold the cuff in position within the tubular structure so that cuff contact with the tubular structure is minimized; e) said cuff in fluid communication with the inflation lumen port in the distal portion of the catheter; f) a filter attached to the inflatable cuff for deployment when said cuff is inflated so that any fluid traveling past the cuff passes through the filter; g) means for inflating and deflating the cuff with inflation material through the inflation lumen port; and h) a valve for maintaining said cuff in an inflated condition for a desired time period. - View Dependent Claims (16, 17, 18, 19, 20, 21)
-
Specification