Catheter with temporary stimulation electrode
First Claim
1. A device comprising:
- a catheter having a proximal end and a distal end and a lumen extending between the proximal end and the distal end of the catheter to deliver a therapeutic substance to target tissue;
a stylet removably positioned within the lumen and having a proximal end and a distal end, wherein the distal end of the stylet extends beyond the distal end of the catheter; and
at least one stimulation electrode disposed at the distal end of the stylet to verify proper positioning of the distal end of the catheter with respect to the target tissue.
1 Assignment
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Accused Products
Abstract
A catheter has at least one removable, temporary stimulation electrode for positioning of the catheter prior to delivery of a therapeutic substance, such as pharmaceutical or biological therapy, to the nervous system of a patient. A stylet having at least one temporary stimulation electrode disposed at its distal end is removably positioned within a lumen of the catheter. A test stimulation is delivered via the temporary stimulation electrode to produce a patient response. If the patient response is not consistent with proper positioning of the distal end of the catheter with respect to the target tissue, the distal end of the catheter is repositioned and another test stimulation is delivered. This process is repeated until the patient response is consistent with proper positioning of the distal end of the catheter. The stylet and its associated temporary stimulation electrode are then removed from the lumen, leaving the catheter in position with respect to the target tissue. A therapeutic substance may then be delivered to the target tissue via the lumen.
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Citations
38 Claims
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1. A device comprising:
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a catheter having a proximal end and a distal end and a lumen extending between the proximal end and the distal end of the catheter to deliver a therapeutic substance to target tissue;
a stylet removably positioned within the lumen and having a proximal end and a distal end, wherein the distal end of the stylet extends beyond the distal end of the catheter; and
at least one stimulation electrode disposed at the distal end of the stylet to verify proper positioning of the distal end of the catheter with respect to the target tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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introducing a catheter having a temporary stimulation electrode removably positioned therein to target tissue within a body of a patient such that a distal end of the temporary stimulation electrode extends beyond a distal end of the catheter;
delivering a test stimulation via the temporary stimulation electrode to produce a patient response;
determining, based on the patient response, whether the catheter is properly positioned with respect to the target tissue; and
removing the temporary stimulation electrode from the catheter when the catheter is properly positioned. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. A device comprising:
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a catheter having a proximal end and a distal end and a lumen extending between the proximal end and the distal end of the catheter to deliver a therapeutic substance to target tissue;
a stiffening stylet removably positioned within the lumen and having a proximal end and a distal end, wherein the distal end of the stylet extends beyond the distal end of the catheter; and
at least one stimulation electrode disposed at the distal end of the stylet to verify proper positioning of the distal end of the catheter with respect to the target tissue. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method comprising:
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introducing a catheter having a stiffening stylet removably positioned therein to target tissue within a body of a patient;
introducing a stimulation stylet having a temporary stimulation electrode positioned at its distal end into the catheter;
delivering a test stimulation via the temporary stimulation electrode to produce a patient response;
determining, based on the patient response, whether the catheter is properly positioned with respect to the target tissue; and
removing the temporary stimulation electrode from the catheter when the catheter is properly positioned. - View Dependent Claims (37, 38)
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Specification