Vena cava thrombus filter
First Claim
1. A vena cava thrombus filter comprising a catheter for insertion in a vein, the catheter comprising a tube of flexible plastic and a guiding and holding wire axially displaceably supported in the tube of flexible plastic, the guiding and holding wire having a handling end and a distal end, the distal end having a filter element formed of wires configured to be elastically expandable inside a vein, wherein, in a forwardly pushed position outside of an insertion end of the catheter, the wires are expandable to form a basket through which liquid can flow, further comprising a handle mounted at the handling end of the guiding and holding wire, a fitting closable to irrigation fluid and having means comprising a bayonet lock for fastening the handle relative to the fitting, the fitting further having a metallic guide sleeve, the flexible tube of the catheter being pulled over the metallic guide sleeve, and a flexible rubber or plastic sleeve being arranged over the metallic guide sleeve and the flexible tube of the catheter pulled over the metallic guide sleeve.
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Accused Products
Abstract
A vena cava thrombus filter includes a catheter for insertion in a vein including a tube of flexible plastic and a guiding and holding wire supported and axially displaceable in the tube. The distal end of the wire has a filter element formed of wires which are elastically expandable inside a vein, wherein, in a forwardly pushed position outside of the catheter insertion end, the wires can expand to form a basket through which liquid can flow. The catheter has at the handling end of the guiding and holding wire a handle, and a fitting closable to irrigation fluid provided with a bayonet lock for fastening the handle relative to the fitting. The fitting has a metallic guide sleeve, wherein the flexible tube of the catheter is pulled over the metallic guide sleeve. A flexible rubber or plastic sleeve is arranged over the metallic guide sleeve and the flexible tube pulled over the metallic guide sleeve.
771 Citations
5 Claims
- 1. A vena cava thrombus filter comprising a catheter for insertion in a vein, the catheter comprising a tube of flexible plastic and a guiding and holding wire axially displaceably supported in the tube of flexible plastic, the guiding and holding wire having a handling end and a distal end, the distal end having a filter element formed of wires configured to be elastically expandable inside a vein, wherein, in a forwardly pushed position outside of an insertion end of the catheter, the wires are expandable to form a basket through which liquid can flow, further comprising a handle mounted at the handling end of the guiding and holding wire, a fitting closable to irrigation fluid and having means comprising a bayonet lock for fastening the handle relative to the fitting, the fitting further having a metallic guide sleeve, the flexible tube of the catheter being pulled over the metallic guide sleeve, and a flexible rubber or plastic sleeve being arranged over the metallic guide sleeve and the flexible tube of the catheter pulled over the metallic guide sleeve.
Specification