Extractable cardiac probe and its application procedure
First Claim
Patent Images
1. An extractable cardiac probe for cardiac stimulation, comprising:
- a catheter having a proximal tip, a distal tip, and having a flexible outer sheath, and an electrode at the distal tip adapted to be placed against an inner surface of a heart; and
a sleeve surrounding said catheter having a proximal tip, a distal tip, and means for attachment of the probe to a cardiac surface,said catheter being separable from said sleeve to permit the withdrawal of the catheter and the retention in position of the sleeve on the cardiac surface, wherein said sleeve has an inside diameter that securely engages the catheter, the sleeve being at least partially deformable through enlargement of the inside diameter to permit separation of the catheter and the sleeve and extraction of the catheter from the sleeve by sliding movement.
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Abstract
An extractable cardiac probe comprising a catheter (4) and a sleeve (3) that is at least partially deformable and mountable to the catheter. The procedure for application of the extractable probe uses an extractor device (11) equipped to pass between the sleeve and catheter to deform the sleeve (3) elastically to permit removal and replacement of the catheter.
79 Citations
42 Claims
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1. An extractable cardiac probe for cardiac stimulation, comprising:
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a catheter having a proximal tip, a distal tip, and having a flexible outer sheath, and an electrode at the distal tip adapted to be placed against an inner surface of a heart; and a sleeve surrounding said catheter having a proximal tip, a distal tip, and means for attachment of the probe to a cardiac surface, said catheter being separable from said sleeve to permit the withdrawal of the catheter and the retention in position of the sleeve on the cardiac surface, wherein said sleeve has an inside diameter that securely engages the catheter, the sleeve being at least partially deformable through enlargement of the inside diameter to permit separation of the catheter and the sleeve and extraction of the catheter from the sleeve by sliding movement. - 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. An extractable probe system for providing a replaceable cardiac stimulation catheter for stimulating cardiac tissue comprising:
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a catheter having a proximal end, a distal end, an electrode at the distal end, and a flexible outer sheath, the outer sheath having a first surface area at the distal end and a maximum outer diameter; and a sleeve having a retention burr and an elasticly deformable inner surface, the inner surface having a rest condition and an expanded condition, the sleeve being selectively mounted on the catheter so that the inner surface in the rest condition engages at least a portion of the first surface area of the catheter and the retention burr will maintain the electrode in contact with cardiac tissue, and so that the inner surface in the expanded condition has an inner diameter that is larger than the maximum outer diameter of the catheter, whereby the catheter may be removed from the sleeve by sliding movement. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A method of providing a probe for use in stimulating cardiac tissue comprising the steps of:
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(a) providing a catheter with a flexible outer sheath having a maximum outer diameter, a distal end, a proximal end, an electrode at the distal end for contacting cardiac tissue, and a first contacting surface located near the distal end proximal of the electrode; (b) providing a sleeve with an inner surface and an outer surface, the outer surface having at least one retention burr projecting outwardly, the inner surface being deformable and having a rest condition and an expanded condition, the expanded condition having an inner diameter that is greater than the maximum outer diameter of the catheter outer sheath; (c) mounting the sleeve over the catheter with the sleeve inner surface in the rest condition in locking engagement with the catheter first surface; and (d) positioning the mounted sleeve and catheter so that the catheter electrode is in touching contact with the cardiac tissue to be stimulated and maintaining the electrode in said position for a time sufficient to permit fibrin to grow over the retention burr, thereby to secure the catheter electrode in place. - View Dependent Claims (34, 35, 36, 37, 38, 39)
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40. A probe for providing stimulating pulses to cardiac tissue comprising:
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a catheter having a flexible outer sheath, a distal end, and an electrode at the distal end; a sleeve having an outer surface on which fibrin may develop and a deformable elastic inner surface, the sleeve being mounted on the catheter with at least a portion of the deformable elastic inner surface frictionally engaged with a portion of the catheter outer sheath, wherein the sleeve deformable elastic inner surface is enlargeable to a diameter that will permit extraction of the catheter by sliding. - View Dependent Claims (41, 42)
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Specification