Balloon expandable vena cava filter to prevent migration of lower extremity venous clots into the pulmonary circulation
First Claim
1. A vena cava filter for preventing migration of lower extremity venous clots into pulmonary circulation, comprising:
- a tubular body having a distal end, a proximal end and therebetween means for rendering the tubular body radially expandable into a plastically deformed shape, said means comprising a wall surface partitioned by a pattern of slots into a latticework;
a head piece circumferentially affixed to the distal end of said tubular body; and
a plurality of tines affixed about the proximal end of said tubular body.
11 Assignments
0 Petitions
Accused Products
Abstract
A vena cava filter for preventing migration of venous clots into the pulmonary circulation is disclosed. The filter comprises a tubular body, the wall surface of which is partitioned by a pattern of slots into a latticework to render the tubular body radially expandable; a head piece affixed to the circumference of the distal end of the tubular body; and a plurality of tines affixed in substantially uniform circumferential spacing about the proximal end of the tubular body. The filter is delivered to the inferior vena cava by catheter means. The filter is deployed to an affixed position within the caval lumen by radial expansion to its operative diameter by balloon expansion of a balloon catheter.
-
Citations
32 Claims
-
1. A vena cava filter for preventing migration of lower extremity venous clots into pulmonary circulation, comprising:
-
a tubular body having a distal end, a proximal end and therebetween means for rendering the tubular body radially expandable into a plastically deformed shape, said means comprising a wall surface partitioned by a pattern of slots into a latticework; a head piece circumferentially affixed to the distal end of said tubular body; and a plurality of tines affixed about the proximal end of said tubular body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A method for deploying a vena cava filter within the inferior vena cava of a body, comprising the steps of:
-
disposing upon a catheter a vena cava filter comprising a head piece attached to a distal end of an expandable tubular body and a plurality of anchoring tines attached in uniform circumferential spacing about a proximal end of said tubular body; inserting the filter carrying catheter within the inferior vena cava; and expanding a portion of the catheter associated with the expandable tubular body of the filter to radially outwardly expand the tubular body to its operative filtering diameter and securely contact and affix the anchoring tines of said filter to the inferior vena cava luminal wall. - View Dependent Claims (21)
-
-
22. A vascular filter comprising a hollow tubular latticework body having a distal end with a head piece affixed thereto and a proximal end with a plurality of tines affixed thereto, wherein the tubular latticework body defines means for rendering the filter plastically expandable, said means comprising:
-
a plurality of longitudinal rib members depending in substantially uniform circumferential spacing from a receiving collar at the distal end of the tubular body, each of said longitudinal rib members diverging at a branch point to form pairs of intermediate longitudinal rib members which extned to a return point at which each of the pairs of the intermediate longitudinal rib members converge to join one to another of a pair to define the proximal end of said tubular body, and transverse rib members disposed in descending alteration between the intermediate longitudinal rib members to interconnect and intraconnect the intermediate longitudinal rib member pairs. - View Dependent Claims (23)
-
-
24. A filter delivery system, comprising:
-
a filter comprising an expandable tubular latticework body having a distal and a proximal end, a head piece having a threaded bore affixed to said distal end and a plurality of tines affixed to said proximal end; a catheter having a means for expansion associated therewith disposed within the tubular body of said filter, said catheter with associated means for expansion having a central lumen; and a mandril disposed within the lumen of said catheter and associated expansion means and screw connected with the threaded bore of the head piece of said filter to secure said filter in place on said catheter with associated expansion means. - View Dependent Claims (25, 26)
-
-
27. A vena cava filter comprising:
-
a head piece including a collecting cavity for collecting venous clots to prevent their passage beyond the filter; and an intermediate latticework portion secured to said head piece and including; circumferentially spaced primary slots providing a primary passageway for unclotted venous fluid passage about said head piece; and circumferentially spaced secondary slots providing a secondary passageway for unclotted venous fluid passage about said head piece such that said latticework portion is capable of being radially expanded into a plastically deformed shape; and means secured to said latticework portion for securing said filter within a vena cava. - View Dependent Claims (28, 29, 30, 31, 32)
-
Specification