Release mechanisms for a clip device
First Claim
1. A clip device for use in endoscopic medical procedures comprising:
- a clip having a plurality of arms each having a proximal end and a distal end, wherein the proximal end of each of the arms is joined to a first retainer and extends distally therefrom, each of the arms being formed of a resilient material and shaped so that the distal ends tend to be spaced apart from each other when the clip is in an open position and adjacent to each other when the clip is in a closed position;
a sliding ring being movable between a first position when the clip is in the open position and a second position to hold the arms of the clip in the closed position; and
at least one stop element disposed on at least one of the arms of the clip.
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Accused Products
Abstract
A clip device for hemostasis includes a clip having a proximal end portion and at least two arm portions extending from the proximal end portion and provided with a tendency to open. A sliding ring is provided for closing the arm portions of the clip. A first retainer is attached to the clip, and the first retainer is configured to be releasably secured to a second retainer that may be attached to an operating wire or a torque cable. In operation, the clip device is advanced to a target site in a body cavity. An outer sheath is retracted to expose the clip, causing the arms to open. An inner sheath is advanced distally, causing the sliding ring to advance distally to close the arms of the clip. Stop elements may be disposed on the clip to ensure that he sliding ring is not advanced distally over the clip. Then, the first retainer is disengaged from the second retainer. Various mechanisms are disclosed to permit the first and second retainers to disengage from one another. The first retainer, attached to the clip, is left inside the patient'"'"'s body cavity, while the second retainer is removed from the patient.
315 Citations
31 Claims
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1. A clip device for use in endoscopic medical procedures comprising:
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a clip having a plurality of arms each having a proximal end and a distal end, wherein the proximal end of each of the arms is joined to a first retainer and extends distally therefrom, each of the arms being formed of a resilient material and shaped so that the distal ends tend to be spaced apart from each other when the clip is in an open position and adjacent to each other when the clip is in a closed position;
a sliding ring being movable between a first position when the clip is in the open position and a second position to hold the arms of the clip in the closed position; and
at least one stop element disposed on at least one of the arms of the clip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for causing hemostasis, the method comprising the steps of:
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providing a clip having a plurality of arms and at least one stop element disposed on at least one of the arms, wherein a proximal end of each of the arms is joined to a first retainer and extends distally therefrom;
delivering the clip in the vicinity of target tissue; and
distally advancing a sliding ring to close the arms of the clip and engage the target tissue, wherein the sliding ring is advanced until it contacts the stop element such that the stop element limits further distal movement of the sliding ring. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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22. A clip device for use in endoscopic medical procedures comprising:
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a first retainer having proximal and distal regions;
a clip having a plurality of arms each having a proximal end and a distal end, wherein the proximal end of each of the arms is joined to the first retainer and extends distally therefrom, each of the arms being formed of a resilient material and shaped so that the distal ends tend to be spaced apart from each other when the clip is in an open position and adjacent to each other when the clip is in a closed position;
a sliding ring being movable between a first position when the clip is in the open position and a second position to hold the arms of the clip in the closed position; and
a second retainer having proximal and distal regions, wherein the first retainer is configured to be coupled to the second retainer prior to deployment of the clip, wherein the first retainer is configured to be disengaged from the second retainer after the clip is deployed by at least one of rotation or proximal retraction of the second retainer with respect to the first retainer. - View Dependent Claims (23, 24, 25, 26, 27)
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28. A clip device for use in endoscopic medical procedures comprising:
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a first retainer having proximal and distal regions;
a clip having a plurality of arms each having a proximal end and a distal end, wherein the proximal end of each of the arms is joined to the first retainer and extends distally therefrom, each of the arms being formed of a resilient material and shaped so that the distal ends tend to be spaced apart from each other when the clip is in an open position and adjacent to each other when the clip is in a closed position;
an outer sheath at least partially housing an inner sheath and a sliding ring, the inner sheath and the sliding ring being configured for longitudinal movement within the outer sheath, wherein the inner sheath is disposed proximal to the sliding ring, wherein the sliding ring being movable between a first position when the clip is in the open position and a second position to hold the arms of the clip in the closed position; and
a second retainer having proximal and distal regions, wherein the first retainer is configured to be coupled to the second retainer prior to deployment of the clip, and wherein the first retainer is configured to be disengaged from the second retainer when no longer radially constrained by the sliding ring or the inner sheath. - View Dependent Claims (29, 30, 31)
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Specification