Apparatus and methods for forming gastrointestinal tissue approximations
First Claim
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1. A tissue securement apparatus, comprising:
- a tissue engaging end effector positioned at a distal end of an elongate member, the end effector having a tissue engaging portion comprising a treadmill assembly, having a conveyor, adapted to engage tissue and move relative to the elongate member;
an obturator or hollow needle having a first position in which the obturator or hollow needle is substantially disposed within the elongate member, and a second position in which at least a portion of the obturator or hollow needle extends out of a portion of the elongate member; and
a transmission mechanism having a drive shaft extending through the elongate member. the drive shaft having a manipulatable proximal end and a distal end coupled to the end effector, the transmission mechanism further having a gear coupled to the drive shaft distal end.
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Abstract
Apparatus and methods are provided for forming a gastrointestinal tissue fold by engaging tissue at a first tissue contact point, moving the first tissue contact point from a position initially distal to a second tissue contact point to a position proximal of the second contact point to form a tissue fold, and extending an anchor assembly through the tissue fold near the second tissue contact point.
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Citations
17 Claims
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1. A tissue securement apparatus, comprising:
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a tissue engaging end effector positioned at a distal end of an elongate member, the end effector having a tissue engaging portion comprising a treadmill assembly, having a conveyor, adapted to engage tissue and move relative to the elongate member; an obturator or hollow needle having a first position in which the obturator or hollow needle is substantially disposed within the elongate member, and a second position in which at least a portion of the obturator or hollow needle extends out of a portion of the elongate member; and a transmission mechanism having a drive shaft extending through the elongate member. the drive shaft having a manipulatable proximal end and a distal end coupled to the end effector, the transmission mechanism further having a gear coupled to the drive shaft distal end. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for securing tissue, comprising:
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positioning a tissue engaging end effector adjacent to tissue to be engaged, the end effector being positioned at a distal end of an elongate member; engaging the tissue via a treadmill assembly, having a conveyor, of the end effector and moving the treadmill assembly relative to the elongate member, the treadmill assembly being coupled via a gear to a distal end of a drive shaft having a manipulatable proximal end; and piercing the tissue via a hollow needle of the end effector, said hollow needle having an open distal end. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A tissue securement apparatus, comprising:
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a tissue engaging end effector positioned at a distal end of an elongate member. the end effector having a tissue engaging portion and a tissue piercing portion. the tissue engaging portion comprising a treadmill assembly, having a conveyor, adapted to rotate and engage the tissue thereto and the tissue piercing portion comprising a hollow needle containing a tissue anchor; and a transmission mechanism having a drive shaft extending through the elongate member, the drive shaft having a manipulatable proximal end and a distal end coupled to the end effector. - View Dependent Claims (15, 16, 17)
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Specification