Mechanical clot treatment device with distal filter
First Claim
1. An embolism treatment device comprising a core element, a proximal cage assembly, a distal collector element, and an actuator element:
- a. said core element comprising at least an elongated core wire having a distal end and a proximal end and passing through said distal collector element and said proximal cage assembly,b. said proximal cage assembly having a distal end and a proximal end substantially coaxial to said core element, said proximal cage assembly having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, andc. said distal collector element having a distal end and a proximal end and spaced from and distal of said proximal cage assembly and having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, andd. an actuator element located proximally to said proximal cage assembly and wherein said proximal cage assembly and said distal collector element are each in said respective first deployment shape when said actuator element is in a first position and said proximal cage assembly and said distal collector element are each in said respective second expanded shapes when said actuator element is in a second position.
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Accused Products
Abstract
This is a surgical device usually delivered through an intravascular catheter. It may be used in several ways. It may, for instance, be used to open a clear passageway adjacent thrombus to allow both blood and medication to bypass the clot. It may be used to pierce and to remove thrombus. These thrombus are often found in tortuous vasculature. The device includes several sections. The device has a core element, typically a core wire. Placed around the distal end of the core element is a collapsible but preferably self expanding proximal cage assembly and a distal filter, preferably a self-expanding cage assembly or other filter component. The various portions of those components are preferably radio-opaque. The proximal end of the proximal cage is typically is affixed to an actuator in such a way as to allow expansion of the cage after deployment. The proximal cage assembly may be used for collecting emboli or for displacing them to allow blood flow to resume, either with or without concurrent clot-dissolving drug treatment. The distal sector, whether a self-expanding cage or fan, is placed distally of the thrombus to collect portions of the thrombus which may loosen during the treatment or removal procedure.
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Citations
27 Claims
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1. An embolism treatment device comprising a core element, a proximal cage assembly, a distal collector element, and an actuator element:
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a. said core element comprising at least an elongated core wire having a distal end and a proximal end and passing through said distal collector element and said proximal cage assembly, b. said proximal cage assembly having a distal end and a proximal end substantially coaxial to said core element, said proximal cage assembly having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, and c. said distal collector element having a distal end and a proximal end and spaced from and distal of said proximal cage assembly and having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, and d. an actuator element located proximally to said proximal cage assembly and wherein said proximal cage assembly and said distal collector element are each in said respective first deployment shape when said actuator element is in a first position and said proximal cage assembly and said distal collector element are each in said respective second expanded shapes when said actuator element is in a second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method for treating an embolism in a blood vessel comprising the steps of:
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1.) introducing into a blood vessel containing an embolism, an embolism treatment device comprising a core element, a proximal cage assembly, a distal collector element, and an actuator element; a. said core element comprising at least an elongated core wire having a distal end and a proximal end and passing through said distal collector element and said proximal cage assembly, b. said proximal cage assembly having a distal end and a proximal end substantially coaxial to said core element, said proximal cage assembly having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, and c. said distal collector element having a distal end and a proximal end and spaced from and distal of said proximal cage assembly and having a first deployment shape and a second expanded shape, said second expanded shape being different from the first deployment shape, and d. an actuator element located proximally to said proximal cage assembly and wherein said proximal cage assembly and said distal collector element are each in said respective first deployment shapes when said actuator element is in a first position and said proximal cage assembly and said distal collector element are each in said respective second expanded shapes when said actuator element is in a second position, 2.) passing said distal collector element past said embolism in said vessel and generally aligning said proximal cage assembly with said embolism, and 3.) moving said actuator element from said first position to said second position and expanding said distal collector element and said proximal cage assembly respectively to said second expanded shapes. - View Dependent Claims (25, 26, 27)
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Specification