Apparatus for delivering filamentary material into a patient
AssigneeCook Medical Technologies LLC
InventorsAidan Furey, Steen Aggerholm, Palle Munk Hansen, Anders Ginge Jensen, Kirsten Asser Larsen
Life of this patent
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Abstract
There are disclosed various dispensing mechanisms for dispensing filamentary material (24) through a catheter (12) into a treatment site of a patient, for example into an aneurysm sack (20) in a patient's vessel (22). In one embodiment, the dispensing assembly (30) includes a chamber having a spherical carrier (50) onto which filamentary material (24) is wound. Upon injecting driving fluid into the dispensing assembly (30) filamentary material (24) unwinds from the spherical carrier (50) and is pulled through the catheter (12) to be dispensed from the distal end (18) of the catheter.
Claims25
Apparatus for delivering filamentary material into a patient including:
- a tubular delivery element having a proximal end, a distal end and a lumen extending within the tubular delivery element from the proximal to the distal ends;
- a material dispenser coupled at the proximal end of the tubular delivery element, the material dispenser including a receptacle having an internal wall of which at least a part has a generally rounded shape, the receptacle including an aperture for receiving driving fluid into the receptacle and an outlet coupled to the lumen of the tubular delivery element;
- and
- a material carrier operable to carry a length of filamentary material, the material carrier having a generally rounded shape conforming at least to said rounded part of the internal wall of the receptacle and having a size smaller than a size of the receptacle;
- the filamentary material being wound around the carrier and having an end located through the outlet for feeding into and through the lumen of the tubular delivery element, wherein the carrier is free to rotate in any direction within the receptacle.
Apparatus for delivering filamentary material into a patient, including a receptacle provided with an internal chamber for holding filamentary material, an aperture for receiving driving fluid into the chamber, an outlet through which filamentary material can pass from the chamber a material carrier operable to carry the filamentary material and is free to rotate in any direction within the receptacle, and a pressure sensitive valve associated with the receptacle, the pressure sensitive valve being closed when the pressure of driving fluid is below a threshold and open when the pressure of driving fluid is above the threshold, the pressure sensitive valve when open allowing fluid flow through the chamber and dispensation of filamentary material from the outlet.
Dependencies are inferred from the claim text.