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Embolic filters, filter systems
Embolic filter systems are devices that deploy in a patient's body to collect thrombi and loosened debris from the patient's vessels during interventional procedures. The embolic protection systems are designed to be exchangeable, so the embolic filter can be replaced within minutes. They also help protect the vasculature during an interventional procedure. These filters can be easily replaced without the need to remove the deployed filter.
These filters can be exchanged without the need for a vasculature sheath. These devices allow the clinician to maneuver the filter more efficiently through the lesion site. The procedure can be completed in a shorter amount of time, as the procedure is more convenient for the patient. The advantage of these systems is that they are more comfortable than traditional stents. They are also more effective than traditional stenting procedures.
Embolitic filters are used for both diagnostic and therapeutic procedures. The system is delivered through an embolic delivery sheath. The filter is mounted in a sac and supported by a support hoop. The distal end of the support hoop is located proximally of the distal opening 44. This alternative embodiment provides a streamlined profile for the delivery sheath 40. This embolic filter system can be used in diagnostic and therapeutic procedures.
A second embolic filter assembly 64 is used. It is configured with a second filter 60 and a support hoop 62. The first device is attached to the guide wire, and the guide wire is advanced to the target site. The second device is deployed through the second lumen of the delivery and retrieval sheath. The second one is deployed through the third lumen of the delivery and retrieval shelve.
The embolic filter 30 is positioned in the vessel V using the well-known percutaneous technique. The guide wire 102 is then moved proximally to the distal lesion. The embolic filter 30 is then advanced along the guide wire 102 until it is fully deployed. Then the guide wire 102 is removed. During the procedure, the implanted device is positioned in the vessel.
The first embolic filter is advanced into the distal lesion and creates an opening to facilitate debris flow. The second embolic filter is deployed into the stenotic vessel and is removed once it fills with debris. After the first and second embolic filters are in place, the interventional device is removed from the vessel. After the first and second embolic filter are removed, the first and the second one are exchanged through the other lumen.
The guide tip 150 is coupled to the guidewire 102 and a filter assembly 174. The two parts are movable within the vessel. The latter is designed to protect the patient and reduce the risks of a stroke. After the sheath is removed, the guidewire 138 can be fully deployed and the two components can be removed. A second embolic filter assembly 133 is attached to the stenting wire 134.
The second type of the embolic filter system is the distal one. The distal one is deployed on the distal end of the lesion. The distal part is used to place the filter assembly. The proximal part is used for retrieving the device. The sheath is deflated to the point where the stenotic material is collected. It is also used in cases where the patient's runoff is compromised.
The delivery and retrieval sheaths for the present invention are made of a polymer woven with a guide wire. The delivery and retrieval sheath is a vascular device with multiple lumens. In addition to the proximal end, it also has a distal end. The guide wire is inserted into the patient's artery, where the filter is deployed. The distal end of the sheath is flexible and can be easily folded.
A delivery and retrieval sheath for the present invention includes an embolic filter 30. The filter 30 is in a constricted undeployed state in Figure 3A. The delivery and retrieval sheath is delivered to a distal lesion 4 via a guide wire. The catheter and guide wire are both operatively coupled to the embolicfilter. In addition to a guidewire, the delivery and retrieval sheath has a delivery and retrieval assembly for the filter.