Types of IVC Filters
There are many different types of IVC filters, varying in size, shape and material. Below is a list of the types of filters that have been manufactured over the years, along with a brief description of each type of IVC filter. If you have suffered complications due to a Bard IVC filter, contact our office immediately to discuss a potential case with one of our IVC Filter lawyers.
Bard Recovery Filter (retrievable) – This filter is a nitinol filter that was introduced in 2003 as both permanet and retrievable filter. It has a central hub with 12 wires extending from it, giving it two layers of filtration.
Bard G2 (retrievable) – The Bard G2 Filter’s unique design and material provide filtering efficiency and allow percutaneous placement through a sheath introducer with minimum entry site difficulties. The placement procedure is quick and simple to perform. This filter is intended to be used in inferior vena cava’s with a diameter less than or equal to 28 mm.
Bard Eclipse Vena Cava Filter – The Eclipse IVC filter has an electropolished filter for long-term retrievability and improved fracture resistance. The Eclipse has bi-level filtration and is migration resistant.
Bard Simon Nitinol Filter – The Simon Nitinol Filter has a sheath introducer and is made of nickel-titanium alloy, allowing it to attain its preformed shape. Because it can tilt when being placed in the vein, placement of this filter tends to be easier than other filters.
B Braun Tempofilter IVC filter (retrievable) – The Tempofilter is a temporary vena caval filter designed to be implanted for only up to 6 weeks.
ALN IVC filter (retrievable) – The ALN filter (ALN Implants Chirurgicaux®, Ghisonaccia-FR) is a stainless steel hydrodynamic retrievable IVC filter. It has six short legs that ensure its adherence to the vena cava walls, and three long legs that guarantee the correct central positioning along the main axis of the vena cava.
Rafael Medical SafeFlo Vena Cava Filter (permanent) – SafeFlo’s design provides a double ring anchoring mechanism as an alternative to the standard strut-based designs of many other filters. This anchoring mechanism is supposed to provide the physical with full control of the filter’s implantation.
Bird’s Nest Filter – Cook Gianturco-Roehm Bird’s Nest IVC Filter (permanent) – The Bird’s Nest Filter was the first filter designed for percutaneous placement. Originally released in 1982, it was modified in 1986 to correct problems causing proximal migration and prolapse. This filter can be placed in patients with a caval diameter of up to 40 mm (for femoral or juglar insertion.
Titanium Greenfield Filter – This filter was introduced in 1988, after the original, stainless steel Greenfield filter. It is also conical in shpae, and can be placed througha sheath in vena cavas up to 28-mm diameter (for both femoral and juglar insertion).
Stainless Steel Over-the-Wire-Greenfield Filter – This conical shaped filter (introduced in 1994) differs from the Titanium Greenfield Filter in that it can be placed over a stiff guide wire that helps stablize the filter during insertion.
Mobin-Uddin Umbrella IVC filter (no longer sold)
LGM Vena Tech Filter – B Braun VenaTech LGM IVC filter (no longer sold) – Modified in 1991, the LGM Vena Tech Filter was introduced in the United States initially in 1989, and then modified in 1991. It also has a conical design, but has side rails that contact the walls of the IVC to help center the filter.
Vena Tech LP Filter – B Braun VenaTech LP IVC filter – This filter, introduced in 2001, is conical in shape, is made of Phynox wires, andc an be placed through a sheath. It also has side rails that enables the filter to fix into place.
TrapEase Filter – Cordis TrapEase IVC filter – This filter has been approved in the US since 2000 and is manufactured by Johnson & Johnson. It is made from a nonferromagnetic nickel-titanium alloy, and has a symmetrical six-pointed star configuration. It can be used for either jugular or femoral deployment and can be used in patients with caval diameters of up to 30 mm. It can be deployed from an antecubital vein with relative ease compared with some of the other IVC filters described.
Optease Filter – Cordis OptEase IVC filter (retrievable) – This filter was introduced in 2002 and is essentailly the TrapEase filter, withsome slight modifications: mainly an amended barb design and an additon of a caudal hook. It is FDA approved as a permanent IVC filter, but can be used off-label as a retrievable filter as well.
Cook Gunther Tulip Filter – (retrievable) – This IVC filter was first introduced in the US in 2001 and can be placed either femoral or jugular through a sheath. While removal within 30 days is typical, successful filter removal more than 1 year after implantation has been reported. This filter also has a hook on it and can be used as a retrievalbe filter, though the FDA has not yet approved it as such.
Cook Celect (retrievable) – The Celect Vena Cava Filter was engineered specifically to enhance the filter’s retrievability, and is based on Cook’s Günther Tulip Vena Cava Filter design.
Argon – Rex Medical Option IVC filter (retrievable) – The nitinol Option IVC filter has a low-profile delivery system which can be implanted into the IVC to prevent recurrent pulmonary embolism. The device is designed to serve as either a permanent or retrievable implant.