Temporary stent and methods for use and manufacture
First Claim
1. A removable stent for temporarily supporting a region of a vessel in a body comprising:
- a stent portion comprised of;
an elongate perfusable vessel supporting portion adapted to be configurable between a reduced size for placement in the vessel and removal therefrom and an expanded size for structurally supporting the vessel in the region; and
perfusable end portions connected to and forming ends of said vessel supporting portion and adapted to allow fluid flow therethrough,and further in which said stent portion is comprised of a plurality of helically wound flat wires forming an elongate hollow tube in which the cross sectional dimension of the flat wires in the radial direction is less than the cross sectional dimension of the flat wires in the tangential direction; and
an actuator portion having a proximal end extending out of the body and a distal end connected to said stent portion and operable by manipulation at said proximal end to configure said support portion into said reduced size and said expanded size.
2 Assignments
0 Petitions
Accused Products
Abstract
A temporary stent for supporting a region of a vessel in a body comprising a stent portion and an actuator portion and methods for the use and manufacture thereof. The stent portion is comprised of an elongate perfusable vessel supporting portion adapted to be configurable between a reduced size for placement in the vessel and removal therefrom and an expanded size for structurally supporting the vessel and perfusable end portions connected to and forming ends of the vessel supporting portion and adapted to allow fluid flow therethrough. The actuator portion includes a proximal end extending out of the body and a distal end connected to the stent portion and operable by manipulation at the proximal end thereof to configure the support portion into a reduced size and an expanded size.
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Citations
46 Claims
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1. A removable stent for temporarily supporting a region of a vessel in a body comprising:
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a stent portion comprised of; an elongate perfusable vessel supporting portion adapted to be configurable between a reduced size for placement in the vessel and removal therefrom and an expanded size for structurally supporting the vessel in the region; and perfusable end portions connected to and forming ends of said vessel supporting portion and adapted to allow fluid flow therethrough, and further in which said stent portion is comprised of a plurality of helically wound flat wires forming an elongate hollow tube in which the cross sectional dimension of the flat wires in the radial direction is less than the cross sectional dimension of the flat wires in the tangential direction; and an actuator portion having a proximal end extending out of the body and a distal end connected to said stent portion and operable by manipulation at said proximal end to configure said support portion into said reduced size and said expanded size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of temporarily implanting a stent into a region of the vascular system of a patient comprising the steps of:
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advancing an expandable stent portion of the stent to the region, operating an actuator portion comprised of a first elongate member having an outer catheter member connected to a proximal end of the stent portion and a second elongate member comprising a tubular member connected to a distal end of the stent portion by moving a proximal end of the first elongate member with respect to a proximal end of the second elongate member to cause expansion of the stent portion by moving a proximal end of the stent portion relatively to a distal end of the stent portion relatively to a distal end of the stent portion to effect expansion of a diameter of the stent, supporting the region of the vascular system with the stent portion and allowing perfusion through the stent portion while in the stent portion is in an expanded configuration, operating an actuator portion to cause contraction of the stent portion, and withdrawing the stent portion. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A removable stent for temporarily supporting a region of a vessel in a body comprising:
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(a) a stent portion comprised of; (1) an elongate perfusable vessel supporting portion adapted to be configurable between a reduced size for placement in the vessel and removal therefrom and an expanded size for structurally supporting the vessel in the region; and (2) perfusable end portions connected to and forming ends of said vessel supporting portion and adapted to allow fluid flow therethrough; and (b) an actuator portion having a proximal end extending out of the body and a distal end connected to said stent portion and operable by manipulation at said proximal end to configure said support portion into said reduced size and said expanded size and further in which said actuator portion comprises; (1) a first elongate member comprising an elongate catheter tube connected to said proximal end of said stent portion, said elongate catheter tube comprised of; (A) an outer tubular layer; and (B) an outer tubular layer concentric with said outer tubular layer; and (2) a second elongate member slidably disposed in a lumen of said first elongate member and extending to and operable to move said distal end of said stent position with respect to said proximal end of said stent portion. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41)
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42. A method of temporarily implanting a stent into a region of the vascular system of a patient said stent comprised of an expandable stent portion and an actuator portion formed of an outer catheter member connected to a proximal end of the stent portion and an inner catheter member having a lumen therein connected to a distal end of the stent portion, said method comprising the steps of:
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positioning a guidewire in the vascular system of the patient to the region to be supported by the stent, advancing the expandable stent portion, the outer catheter member, and the inner catheter member of the stent to the region over the guidewire through the lumen in the inner catheter member, said stent portion having a generally cylindrical size when expanded for structurally supporting the vessel in the region, operating the actuator portion to cause expansion of the stent portion by moving a proximal end of the outer catheter member with respect to a proximal end of the inner catheter member to move a proximal end of the stent portion relatively to a distal end of the stent portion to effect expansion of a diameter of the stent, supporting the region of the vascular system with the stent portion and allowing perfusion through the stent portion while in the stent portion is in an expanded configuration, operating the actuator portion to cause contraction of the stent portion, and withdrawing the stent portion. - View Dependent Claims (43, 44)
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45. A method of temporarily implanting a stent into a region of the vascular system of a patient comprising the steps of:
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positioning a delivery catheter into the patient to the region of the vascular system of the patient; and advancing the stent portion and the actuator portion to the region of the vascular system through a lumen in the delivery catheter, said stent portion having a generally cylindrical size when expanded for structurally supporting the vessel in the region, operating an actuator portion to cause expansion of the stent portion, supporting the region of the vascular system with the stent portion and allowing perfusion through the stent portion while in the stent portion is in an expanded configuration, operating an actuator portion to cause contraction of the stent portion, and withdrawing the stent portion.
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46. A method of temporarily implanting a stent into a region of the vascular system of the patient comprising the steps of:
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advancing an expandable stent portion of the stent to the region, said stent portion having a generally cylindrical size when expanded for structurally supporting the vessel in the region, operating an actuator portion to cause expansion of the stent portion, supporting the region of the vascular system with the stent portion and allowing perfusion through the stent portion while in the stent portion is in an expanded configuration, connecting a lead of a voltage source to the stent portion, connecting another lead to the body of the patient, and applying a potential between the leads to minimize the tendency for clotting materials to form on the stent portion, operating an actuator portion to cause contraction of the stent portion, and withdrawing the stent portion.
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Specification