Cook Medical Technologies LLC

Cook Incorporated

William Cook Europe Aps

Wilson Cook Europe Aps

Arne Molgaard-Nielsen

Thomas A Osborne

Steen Aggerholm

Per Hendriksen

Thomas Lysgaard

Allan G Hemmingsen

Jacob Lund Clausen

Bente Weber Christensen

Frank Svendsen

A removable vena cava filter configured for reduced trauma and enhanced visualization of anchoring hook placement relative to the vessel wall is disclosed. The filter includes a plurality of struts, each having an anchoring hook and a stop member proximate the anchoring hook. The stop members are configured to engage the vessel wall to prevent excessive penetration of the anchoring hooks into the vessel wall and to aid in the identification of anchoring hook placement relative to the vessel wall.

Visual stabilizer on anchor legs of vena cava filter

A removable vena cava filter () configured for reduced trauma and enhanced visualization of anchoring hook placement relative to the vessel wall is disclosed. The filter includes a plurality of struts (-), each having an anchoring hook () and a stop member () proximate the anchoring hook. The stop members are configured to engage the vessel wall to prevent excessive penetration of the anchoring hooks into the vessel wall and to aid in the identification of anchoring hook placement relative to the vessel wall.

The present invention provides a method of capturing thrombi in a blood vessel, which includes delivering a removable filter in a collapsed state within the blood vessel and deploying the filter to an expanded state within the blood vessel. The filter includes a plurality of primary struts and a plurality of secondary struts emanating from a hub and extending arcuately along a longitudinal axis and linearly radially. Each primary strut has an arcuate segment including first and second curved portions. Each secondary strut includes first and second arcs. The primary struts terminate with an anchoring hook. Each primary strut crosses another primary strut along the longitudinal axis in the collapsed state such that the arcuate segments occupy a first diameter and the anchoring hooks occupy a second diameter, the first diameter being greater than the second diameter for filter retrieval or delivery. In the expanded state, the secondary struts centralize the filter in the blood vessel and the anchoring hooks engage with the blood vessel.

Removable vena cava filter for reduced trauma in collapsed configuration

There is disclosed a tri-leaflet valve () in which the leaflets () extend for substantially the entire length of the valve (). The valve () is provide with a waist (). An element () inserted in the tri-leaflet valve () can be sealed by closure of the valve (), for example by pressurization or twisting. The seat is more effective then prior art seals.

Haemostatic valve

A removable vena cava filter configured for simplified delivery to and retrieval from the vena cava of a patient is disclosed. The filter includes struts configured to be arranged in consistent orientation together between expanded (opened) and collapsed (closed) configurations, thereby minimizing entanglement of the struts. Each of the struts has a circumferential bend relative to the longitudinal axis of the filter. The circumferential bends allow for consistent orientation of the struts when moved between the expanded and collapsed configurations and when placed in the closed configuration of the filter.

Removable vena cava filter comprising struts having axial bends

The haemostatic valve assembly () includes a housing () with a chamber () therewithin. A flexible valve element () is located in the chamber () and supported by the housing (). A source () of pressurized fluid can be fed into the chamber () through a port () in the housing (). A catheter, dilator, pusher or other elongate insert fed through the haemostatic valve assembly () can be sealed by the application of fluid pressure into the chamber (), which causes the sides of the valve element () to press against the insert () thereby to provide an effective seal.

A removable filter having a collapsed state and an expanded state for capturing thrombi in a blood vessel is disclosed. The filter comprises a plurality of primary struts and a plurality of secondary struts. Each primary strut in the expanded state extends from a primary strut first end to an anchoring hook. Each primary strut extends arcuately along a longitudinal axis and linearly radially. The plurality of primary strut first ends are attached together along the longitudinal axis. Each secondary strut in the expanded state extends from a secondary strut first end to a free end. Each secondary strut extends arcuately along the longitudinal axis and linearly radially. The plurality of secondary struts are attached together along the longitudinal axis. The plurality of secondary struts centralize the filter in the expanded state in the blood vessel.

Removable vena cava filter having primary struts for enhanced retrieval and delivery

The present invention involves a removable filter for capturing thrombi in a blood vessel. The filter comprises a plurality of primary struts and a plurality of secondary struts. The plurality of primary struts has first ends attached together along a longitudinal axis. Each primary strut has an arcuate segment extending from the first end to an anchoring hook. The primary struts are configured to move between an expanded state for engaging the anchoring hooks with the blood vessel and a collapsed state for filter retrieval or delivery. Each primary strut is configured to cross another primary strut along the longitudinal axis in the collapsed state such that each anchoring hook faces the longitudinal axis away from the blood vessel for filter retrieval or delivery. The plurality of secondary struts has connected ends attached together along the longitudinal axis. The secondary struts extend therefrom to free ends to centralize the filter in the expanded in the blood vessel.

Removable vena cava filter having inwardly positioned anchoring hooks in collapsed configuration

The present invention involves a removable filter for capturing thrombi in a blood vessel. The filter comprises a plurality of struts having first ends attached together along a longitudinal axis of the filter. Each strut has a body member extending from the first end along the longitudinal axis to an anchoring hook defining a strut axis. Each strut is configured to move along a strut path relative to the longitudinal axis between an expanded state for engaging with the blood vessel and a collapsed state for filter delivery or retrieval. Each anchoring hook has an angle of up to about 90 degrees relative to the strut axis.

Removable vena cava filter with anchoring feature for reduced trauma

The present invention provides a removable vena cava filter for capturing thrombi in a blood vessel. The filter comprises a plurality of primary struts having first ends attached together along a longitudinal axis. Each primary strut has an arcuate segment extending from the first end to an anchoring hook. The primary struts are configured to move between an expanded state for engaging the anchoring hooks with the blood vessel and a collapsed state for filter retrieval or delivery. Each primary strut are configured to cross another primary strut along the longitudinal axis in the collapsed state such that the arcuate segments occupy a first diameter greater than a second diameter occupied by the anchoring hooks in the collapsed state for filter retrieval or delivery.

The present invention provides a removable vena cava filter for capturing thrombi in a blood vessel. The filter comprises a plurality of primary struts having first ends attached together along a longitudinal axis. Each primary strut includes an arcuate segment having a first tensile strength. The arcuate segment extends from the first end to an anchoring hook. The anchoring hook is integral with the arcuate segment and having the first thickness and first tensile strength. The filter further comprises a plurality of secondary struts freely spaced between the primary struts and having connected ends attached together along the longitudinal axis. Each secondary strut freely extends from the connected end to a free end avoiding contact with other secondary struts and primary struts. Each secondary strut has a second tensile strength.

Removable vena cava filter

A balloon catheter for performing angioplasty procedures includes a catheter shaft, a balloon attached to the catheter shaft near the distal end and a channel either attached to or integrally formed on the distal end of the catheter shaft distally of the balloons. The relatively short channel is threaded over a wire guide for advancing the balloon catheter into the vascular system of the patient over the wire guide. The relatively short channel allows the balloon catheter to be advanced along the wire guide with less friction interaction between the balloon catheter and wire guide than in conventional balloon catheters in which the wire guide lumen extends the full length of the catheter.

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Oesterbro, Denmark

Arne Molgaard-Nielsen