Systems and methods for deploying a biosensor in conjunction with a prosthesis
First Claim
1. A method for implanting a biosensor at a treatment site within a body lumen of a patient, comprising:
- advancing a tubular prosthesis in a contracted state within the body lumen to the treatment site;
advancing a substantially enclosed loop to the treatment site, the loop including a biosensor attached thereto;
positioning the loop and the prosthesis coaxially with respect to one another at the treatment site; and
expanding the prosthesis towards an enlarged condition, thereby substantially engaging the loop around the prosthesis and substantially engaging the prosthesis with a wall of the blood vessel at the treatment site.
1 Assignment
0 Petitions
Accused Products
Abstract
A biosensor for monitoring pressure or other physical parameters at an aneurysm site is mountable to a tubular prosthesis that is expandable between contracted and enlarged conditions. A loop, having the biosensor attached thereto, is securable around the prosthesis. An apparatus is used to deliver the loop to an aneurysm site that includes a catheter having a connector on its distal end for detachably securing the loop thereto. The prosthesis is advanced in a contracted state to the aneurysm, and the apparatus, with the loop connected thereto, is advanced to the aneurysm site. The loop and the prosthesis are positioned coaxially with respect to one another, and the prosthesis is expanded towards its enlarged condition, thereby engaging the loop around the prosthesis and engaging the prosthesis with a wall of the blood vessel at the treatment site.
200 Citations
41 Claims
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1. A method for implanting a biosensor at a treatment site within a body lumen of a patient, comprising:
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advancing a tubular prosthesis in a contracted state within the body lumen to the treatment site;
advancing a substantially enclosed loop to the treatment site, the loop including a biosensor attached thereto;
positioning the loop and the prosthesis coaxially with respect to one another at the treatment site; and
expanding the prosthesis towards an enlarged condition, thereby substantially engaging the loop around the prosthesis and substantially engaging the prosthesis with a wall of the blood vessel at the treatment site. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
expanding the loop across the treatment site before the prosthesis is advanced to the treatment site; and
advancing the prosthesis through the loop upon advancement of the prosthesis to the treatment site.
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7. The method of claim 1, wherein the prosthesis is advanced to the treatment site mounted to a distal end of a delivery device, and wherein the loop is advanced coaxially over the delivery device to the treatment site.
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8. The method of claim 1, wherein the treatment site comprises an aneurysm.
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9. The method of claim 8, wherein the biosensor is disposed within an aneurysmal sac at least partially defined by the aneurysm after the prosthesis is expanded to its enlarged condition.
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10. An apparatus for delivering a biosensor to a treatment site within a body lumen, comprising:
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a catheter having a proximal end and a distal end adapted for introduction into the body lumen;
an attachment loop having a biosensor attached thereto; and
a connector on the distal end of the catheter for detachably securing the attachment loop to the catheter, said connector comprising a wire extending through the catheter, the wire having a distal portion at the distal end of the catheter that is intertwined with the attachment loop to substantially secure the loop to the distal end of the catheter. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
a tubular prosthesis expandable between a contracted condition for facilitating introduction into the body lumen, and an enlarged condition for contacting a wall of the body lumen at the treatment site; and
a delivery device for directing the prosthesis to the treatment site in its contracted condition, the delivery device having a cross-section substantially smaller than a cross-section of the attachment loop, thereby facilitating positioning the loop coaxially with respect to the prosthesis before the prosthesis is deployed from the delivery device.
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15. The apparatus of claim 14, wherein the attachment loop has a size for substantially securing the loop to the prosthesis in its enlarged condition.
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16. The apparatus of claim 14, wherein the attachment loop comprises a ring or sleeve formed from a substantially elastic material, the ring or sleeve having a relaxed state having a cross-section smaller than the prosthesis in its enlarged condition.
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17. The apparatus of claim 14, wherein the attachment loop comprises a substantially inelastic thread having a cross-section similar to the prosthesis in its enlarged condition.
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18. The apparatus of claim 10, further comprising a sheath slidable over the catheter, the sheath being configured for receiving the attachment loop therein.
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19. The apparatus of claim 18, wherein the attachment loop is biased to assume an open configuration upon release from the sheath.
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20. An apparatus for delivering a biosensor to a treatment site within a body lumen, comprising:
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a catheter having a proximal end and a distal end adapted for introduction into the body lumen;
an attachment loop having a biosensor attached thereto, said biosensor extending radially outward from the loop; and
a connector on the distal end of the catheter for detachably securing the attachment loop to the catheter. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
a tubular prosthesis expandable between a contracted condition for facilitating introduction into the body lumen, and an enlarged condition for contacting a wall of the body lumen at the treatment site; and
a delivery device for directing the prosthesis to the treatment site in its contracted condition, the delivery device having a cross-section substantially smaller than a cross-section of the attachment loop, thereby facilitating positioning the attachment loop coaxially with respect to the prosthesis before the prosthesis is deployed from the delivery device.
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26. The apparatus of claim 25, wherein the attachment loop has a size for substantially securing the attachment loop to the prosthesis in its enlarged condition.
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27. The apparatus of claim 25, wherein the attachment loop comprises a ring or sleeve formed from a substantially elastic material, the ring or sleeve having a relaxed state having a cross-section smaller than the prosthesis in its enlarged condition.
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28. The apparatus of claim 25, wherein the attachment loop comprises a substantially inelastic thread having a cross-section similar to the prosthesis in its enlarged condition.
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29. The apparatus of claim 20, further comprising a sheath slidable over the catheter, the sheath being configured for receiving the attachment loop therein.
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30. The apparatus of claim 29, wherein the attachment loop is biased to assume an open configuration upon release from the sheath.
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31. An apparatus for monitoring a physical parameter at an aneurysmal site within a blood vessel lumen comprising:
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a tubular prosthesis expandable between a contracted condition for facilitating introduction of the prosthesis into the lumen of the blood vessel, and an enlarged condition for contacting a wall of the blood vessel lumen;
a substantially enclosed attachment loop having a size for securing the attachment loop coaxially around the prosthesis in its enlarged condition; and
a biosensor attached to the attachment loop and extending radially outward from the attachment loop for positioning the biosensor within an aneurysmal sac. - View Dependent Claims (32)
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33. An apparatus for use with a tubular prosthesis in monitoring a physical parameter at a site within a body lumen, comprising:
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a substantially enclosed attachment loop configured for attachment to an outer circumference of the prosthesis; and
a biosensor attached to the attachment loop, said biosensor extending radially outward from the attachment loop. - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41)
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Specification