The present invention provides devices for safely closing an opening in tissue. In one embodiment, the medical device includes a delivery tube, a control member and a staple. The delivery tube is elongated and extends from a proximal end to a distal end to define a longitudinal axis. The delivery tu
The present invention provides devices for safely closing an opening in tissue. In one embodiment, the medical device includes a delivery tube, a control member and a staple. The delivery tube is elongated and extends from a proximal end to a distal end to define a longitudinal axis. The delivery tube defines a tube lumen, while the control member is elongated and extends through the tube lumen. The staple is releasably attached to the control member adjacent the distal end of the delivery tube. The staple formed of a resilient material having a C-shape, the C-shape including free ends defining first and second tines. The resilient material of the staple is elastically deformable such that the staple may flex to change a distance between the first and second tines. The free ends are spaced apart a first distance in an unbiased state of the staple.
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1. A medical device for closing openings in tissue, the medical device comprising: an elongated delivery tube extending from a proximal end to a distal end and defining a longitudinal axis, the delivery tube defining a tube lumen;an elongated control member extending through the tube lumen of the de
1. A medical device for closing openings in tissue, the medical device comprising: an elongated delivery tube extending from a proximal end to a distal end and defining a longitudinal axis, the delivery tube defining a tube lumen;an elongated control member extending through the tube lumen of the delivery tube;a staple releasably attached to the control member adjacent the distal end of the delivery tube, the staple formed of a resilient material having a C-shape, the C-shape including free ends defining first and second tines structured to pierce the tissue and an intermediate body connecting the first and second tines, the resilient material of the staple being elastically deformable such that the staple may flex to change a distance between the first and second tines, the free ends spaced apart a first distance in an unbiased state of the staple; andthe medical device having three configurations including a first deployed configuration wherein the staple is located outside of the tube lumen in its unbiased state, a second delivery configuration where the staple is positioned within the tube lumen in a compressed state where the free ends have been moved towards each other relative to the unbiased state, and a third insertion configuration wherein the staple is located outside of the tube lumen in an expanded state where the free ends have been moved away from each other relative to the unbiased state. 2. The medical device of claim 1, wherein the free ends are spaced apart a third distance in the third insertion configuration, the third distance being greater than a smallest inner diameter of the delivery tube. 3. The medical device of claim 1, wherein, in the third insertion configuration, the staple is pressed against the distal end of the delivery tube to flex the staple. 4. The medical device of claim 3, wherein a proximal force on the control member causes the staple to be pressed against the distal end. 5. The medical device of claim 1, wherein, in the second delivery configuration, the free ends are spaced apart a second distance that is less than the first distance. 6. The medical device of claim 1, wherein, in the third insertion configuration, the free ends are spaced apart a third distance that is greater than the first distance. 7. The medical device of claim 1, wherein the staple is attached to the control member such that the first and second tines of the staple extend away from the intermediate member in a proximal direction for retrograde insertion of the staple into the tissue. 8. The medical device of claim 1, wherein the distal end of the delivery tube includes a distal end surface that is angled less than 90 degrees relative to the longitudinal axis and structured to engage the first and second tines in the first deployed configuration. 9. The medical device of claim 1, wherein the tube lumen has an oblong cross-sectional shape such that it is elongated in a direction transverse to the longitudinal axis. 10. The medical device of claim 9, wherein the delivery tube has an oblong cross-sectional shape such that it is elongated in a direction transverse to the longitudinal axis and defines a minor outer diameter that is less than a major outer diameter, the first distance being greater than the minor outer diameter. 11. The medical device of claim 9, wherein the oblong cross-sectional shape defines a major axis and a minor axis, and wherein the staple extends in a staple plane generally aligned with the major axis in the second delivery configuration, and generally aligned with the minor axis in the third insertion configuration. 12. The medical device of claim 1, wherein the control member is attached only to the intermediate member. 13. The medical device of claim 1, wherein the control member includes an adjustable slot sized to receive the staple. 14. The medical device of claim 13, wherein the control member is formed of a resilient material that flexes to adjust the size of the slot. 15. The medical device of claim 1, wherein the control member includes first and second grasping fingers moveable relative to each other and structured to grasp the staple therebetween. 16. The medical device of claim 15, wherein the first and second grasping fingers are longitudinally slidably relative to each other. 17. The medical device of claim 15, the first and second grasping fingers are pivotally attached for relative rotation therebetween. 18. The medical device of claim 1, wherein the first and second tines and intermediate member each are curved to form the C-shape. 19. The medical device of claim 1, wherein the first and second tines extend primarily radially inwardly towards the longitudinal axis in the unbiased state, and extend primarily longitudinally away from the intermediate member in the expanded state. 20. The medical device of claim 1, wherein the first and second tines and intermediate member are unitarily and integrally formed.
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