Embolus blood clot filter delivery system
AssigneeC.R. Bard, Inc.
InventorsAlexander Germanovich KASHKAROV, Andrzej J. CHANDUSZKO
Life of this patent
Estimating the term…
Abstract
A blood filter delivery system for delivering a blood filter into a vein includes a push rod for pushing the blood filter through and out of a catheter, the push rod having a filter positioning assembly on one end. The filter positioning assembly includes positioner members, which retain anchor members of the filter. The filter positioning assembly can position the end of the delivery catheter near the blood vessel centerline before releasing the filter's anchor members, thereby helping to align the blood filter along the centerline of the blood vessel.
Claims18
1-35. (canceled)
A blood filter delivery apparatus for delivering a blood filter into a blood vessel having a vessel wall, the blood filter including a plurality of filter appendages, the apparatus comprising:
- a) a catheter having a free end portion with a catheter opening and a catheter wall with an inner surface surrounding a catheter lumen, wherein the catheter opening communicates with the catheter lumen;
- b) a filter positioning assembly situated with the filter within the catheter lumen to define a stored position, the filter positioning assembly including a plurality of positioner members coupled to the assembly, each of the plurality of positioner members having an end that is connected to a filter appendage within the catheter lumen, wherein the ends of the positioner members and the filter appendages are connected within the catheter lumen in said stored position;
- c) wherein the filter is positioned closer to the catheter opening than the positioning assembly;
- d) a pusher that engages the positioning assembly and filter inside the lumen, wherein the positioning assembly and filter are movable between said stored position within the catheter lumen and a preliminary dispensed position wherein the positioning members engage the vessel wall while at least a portion of some of the filter appendages remain inside the catheter lumen;
- and
- e) wherein the blood filter includes a head, said filter appendages connected to said head and wherein in said stored position, said head is closer to the catheter opening than said filter appendages.
A blood filter delivery apparatus for delivering a blood filter into a blood vessel having a vessel wall, the blood filter including a plurality of appendages, the apparatus comprising:
- a) a catheter having a free end portion with an opening and a catheter wall with an inner surface surrounding a catheter lumen;
- b) a filter and positioning assembly situated within the catheter lumen to define a stored position, the filter having multiple filter legs, the filter positioning assembly including a plurality of positioner members coupled to the assembly, each of the plurality of positioner members having an end that is connected to a filter leg appendage within the catheter lumen, wherein the ends of the positioner members and the appendages are connected within the catheter lumen;
- c) wherein the filter is positioned in between the catheter opening and the positioning assembly;
- and
- d) a pusher that engages the positioning assembly and filter inside the lumen in said stored position, wherein the positioning assembly and filter are movable between said stored position within the catheter lumen and a preliminary dispensed position wherein some of the filter legs engage the vessel wall while at least a portion of some of the filter legs remain inside the catheter lumen.
A blood filter delivery apparatus for delivering a blood filter into a blood vessel having a vessel wall, the blood filter including a plurality of appendages, the apparatus comprising:
- a) a catheter having a free end portion with an opening and a catheter wall with an inner surface surrounding a catheter lumen;
- b) a filter and positioning assembly situated within the catheter lumen to define a stored position, the filter having multiple filter legs, the filter positioning assembly including a plurality of positioner members coupled to the assembly;
- c) wherein in said store position each of the plurality of positioner members has an end that is connected to a filter leg appendage within the catheter lumen and the ends of the positioner members and the appendages are connected within the catheter lumen;
- d) wherein the filter is positioned in between the catheter opening and the positioning assembly;
- e) a pusher that engages the positioning assembly and filter inside the lumen in said stored position;
- and
- f) wherein the positioning assembly and filter are movable between said stored position within the catheter lumen and a preliminary dispensed position wherein some of the filter legs engage the vessel wall while at least a portion of some of the filter legs remain inside the catheter lumen.
Dependencies are inferred from the claim text.