Clip devices and methods of delivery and deployment
First Claim
1. A system for deploying at least one clip device, the system comprising:
- a first clip device having first and second arms, wherein distal ends of the first and second arms tend to be spaced apart from each other when the first clip device is in an open state, and wherein the distal ends of the first and second arms are adjacent to each other when the first clip device is in a closed state;
a sliding ring being movable between a first position when the first clip device is in the open state and a second position to hold the first and second arms of the first clip device in the closed state;
an inner catheter having a lumen, wherein the first clip device and the sliding ring are configured to be selectively advanced through the lumen of the inner catheter; and
an outer catheter having a lumen, wherein the inner catheter is configured for longitudinal movement with respect to the lumen of the outer catheter,wherein selective positioning of the outer catheter over a distal region of the inner catheter causes the distal region of the inner catheter to bow radially inward to form a constriction that selectively engages the sliding ring of the first clip device using a friction fit, so that the sliding ring does not move either proximally or distally.
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Accused Products
Abstract
The present embodiments provide systems and methods for deploying at least one clip device. In a first embodiment, the system comprises a first clip device having first and second arms. The first clip device and an associated sliding ring are configured to be selectively advanced through a lumen of an inner catheter. Selective positioning of an outer catheter over a distal region of the inner catheter causes a distal region of the inner catheter to bow radially inward to form a constriction that securely engages the sliding ring of the first clip device, thereby allowing for partial closure and repositioning of the first clip device. In an alternative embodiment, a delivery system includes a single catheter having a tapered distal region, such that upon ejection of the sliding ring from the distal end of the catheter, the sliding ring is dimensioned to abut the distal end of the catheter. In any of the embodiments, multiple clips may be sequentially loaded and deployed using the delivery systems. Various clip designs and a loading cylinder are also disclosed.
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Citations
20 Claims
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1. A system for deploying at least one clip device, the system comprising:
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a first clip device having first and second arms, wherein distal ends of the first and second arms tend to be spaced apart from each other when the first clip device is in an open state, and wherein the distal ends of the first and second arms are adjacent to each other when the first clip device is in a closed state; a sliding ring being movable between a first position when the first clip device is in the open state and a second position to hold the first and second arms of the first clip device in the closed state; an inner catheter having a lumen, wherein the first clip device and the sliding ring are configured to be selectively advanced through the lumen of the inner catheter; and an outer catheter having a lumen, wherein the inner catheter is configured for longitudinal movement with respect to the lumen of the outer catheter, wherein selective positioning of the outer catheter over a distal region of the inner catheter causes the distal region of the inner catheter to bow radially inward to form a constriction that selectively engages the sliding ring of the first clip device using a friction fit, so that the sliding ring does not move either proximally or distally. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for deploying at least one clip device, the system comprising:
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a first clip device having first and second arms, wherein distal ends of the first and second arms are biased towards an open state in which they are spaced apart from each other, and wherein the distal ends of the first and second arms are adjacent to each other when the first clip device is in a closed state; a sliding ring being movable between a first position when the first clip device is in the open state and a second position to hold the arms of the first clip device in the closed state; and a catheter having proximal and distal ends, a lumen extending therebetween, and a tapered distal region, wherein the catheter comprises a first inner diameter at a location proximal to the tapered distal region, and further has a second inner diameter at the distal end, wherein the second inner diameter is less than the first inner diameter, wherein the sliding ring comprises an outer diameter that is less than the first inner diameter of the catheter and greater than the second inner diameter of the catheter, wherein the tapered distal region of the catheter is integral to the catheter, is directly adjacent to the first clip device in a delivery state, and is flexible such that application of a predetermined distally-oriented force imposed by the sliding ring ejects the sliding ring from the distal end of the catheter, and wherein there is no outer catheter surrounding the tapered distal region of the catheter. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system for deploying at least one clip device, the system comprising:
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a first clip device having first and second arms, wherein distal ends of the first and second arms tend to be spaced apart from each other when the first clip device is in an open state, and wherein the distal ends of the first and second arms are adjacent to each other when the first clip device is in a closed state; a sliding ring being movable between a first position when the first clip device is in the open state and a second position to hold the first and second arms of the first clip device in the closed state; an inner catheter having a lumen, wherein the first clip device and the sliding ring are configured to be selectively advanced through the lumen of the inner catheter; and an outer catheter having a lumen, wherein the inner catheter is configured for longitudinal movement with respect to the lumen of the outer catheter, wherein selective positioning of the outer catheter over a distal region of the inner catheter causes the distal region of the inner catheter to bow radially inward to form a constriction that selectively engages the sliding ring of the first clip device using a friction fit, wherein the sliding ring has first and second ends, and the constriction engages the sliding ring between the first and second ends. - View Dependent Claims (18, 19, 20)
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Specification