Orthopedic fastener
First Claim
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1. A surgical fastener for securing soft tissue to bone, which comprises:
- a) a rivet having an axial bore, distal locking means for frictionally engaging the bone to secure the rivet thereto, and a proximal head portion;
b) a pin receivable into said bore and proximally slidable therein, said pin having a proximal shaft portion, and a distal portion for activating said rivet locking means in response to proximal movement of said pin within said bore, said distal portion being flared with progressively greater diameter in the distal direction,said rivet locking means being movable between an inactivated configuration and an activated configuration, and said pin having an end portion distal to said rivet locking means when said rivet locking means is in said inactivated configuration; and
c) indexing means for preventing distal movement of said pin relative to said rivet when said pin has been moved within said bore to any one of several discrete positions relative to said rivet, said indexing means comprisingi) a plurality of longitudinally spaced apart circumferential ridges positioned along said proximal portion of said pin, each ridge having an inclined proximal surface and a flat distal surface extending radially outward, andii) a flat proximally facing stop wall positioned in said rivet, said distal surface of each said ridge being resiliently engageable with said proximally facing stop wail to prevent distal movement of said pin relative to said rivet once said ridge is moved proximal to said stop wall, said inclined proximal surface of each said ridge permitting further proximal movement of said pin within said bore.
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Abstract
Soft tissue is secured to bone with a surgical fastener having expandable legs. The surgical fastener is implanted into a predrilled hole in the bone and the legs are expanded by pulling a slidable pin with a flared distal end. The pin includes a breakaway notch. The fastener may be fabricated from resorbable material and may be implanted arthroscopically.
765 Citations
33 Claims
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1. A surgical fastener for securing soft tissue to bone, which comprises:
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a) a rivet having an axial bore, distal locking means for frictionally engaging the bone to secure the rivet thereto, and a proximal head portion; b) a pin receivable into said bore and proximally slidable therein, said pin having a proximal shaft portion, and a distal portion for activating said rivet locking means in response to proximal movement of said pin within said bore, said distal portion being flared with progressively greater diameter in the distal direction, said rivet locking means being movable between an inactivated configuration and an activated configuration, and said pin having an end portion distal to said rivet locking means when said rivet locking means is in said inactivated configuration; and c) indexing means for preventing distal movement of said pin relative to said rivet when said pin has been moved within said bore to any one of several discrete positions relative to said rivet, said indexing means comprising i) a plurality of longitudinally spaced apart circumferential ridges positioned along said proximal portion of said pin, each ridge having an inclined proximal surface and a flat distal surface extending radially outward, and ii) a flat proximally facing stop wall positioned in said rivet, said distal surface of each said ridge being resiliently engageable with said proximally facing stop wail to prevent distal movement of said pin relative to said rivet once said ridge is moved proximal to said stop wall, said inclined proximal surface of each said ridge permitting further proximal movement of said pin within said bore. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15)
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12. A surgical fastener for securing soft tissue to bone, which comprises:
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a) a rivet having an axial bore, distal locking means for frictionally engaging the bone to secure the rivet thereto, and a proximal head portion; and
,b) a pin receivable into said bore and proximally slidable therein, said pin having means for activating said rivet locking means in response to proximal movement of said pin within said bore, wherein said means for activating the rivet locking means comprises a flared portion at the distal end portion of said pin, and said pin further comprises an eyelet positioned over its proximal end to facilitate gripping of said pin.
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16. A method for securing soft tissue to bone, comprising:
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A) drilling a hole into the bone for receiving a surgical fastener; B) inserting a surgical fastener into said hole, said surgical fastener comprising; a) a rivet having an axial bore, distal locking means for frictionally engaging the bone to secure the rivet thereto, and a proximal head portion having means for holding soft tissue; and b) a pin receivable into said bore and proximally slidable therein, said pin having a proximal portion with a substantially unchanging cross-section throughout the length of said proximal portion, and a distal portion for activating said rivet locking means in response to proximal movement of said pin within said bore, said distal portion having a flared portion with progressively greater diameter in the distal direction, said rivet locking means being movable between an inactivated configuration and an activated configuration, and said pin having an end portion distal to said rivet locking means when said rivet locking means is in said inactivated configuration; c) indexing means for preventing distal movement of said pin relative to said rivet when said pin has been moved within said bore to any one of several discrete positions relative to said rivet, said indexing means including i) a plurality of longitudinally spaced apart circumferential ridges positioned along said proximal portion of said pin, each ridge having an inclined proximal surface and a flat distal surface extending radially outward, and ii) a flat proximally facing stop wall positioned in said rivet, said distal surface of each ridge being resiliently engageable with said proximally facing stop wall to prevent distal movement of said pin relative to said rivet once said ridge is moved proximal to said stop wall, said inclined proximal surface of each said ridge permitting further proximal movement of said pin within said bore; C) placing the fastener so as to hold the soft tissue in contact with the bone; and D) moving the pin proximally to an indexed position to activate the rivet locking means. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23)
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24. A surgical fastener for securing soft tissue to bone comprising:
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a rivet having an axial bore, a proximal head portion, and a distal portion movable between an unexpanded position and an expanded position for receiving a flared portion of a setting pin, said rivet being composed of a resorbable material; and a setting pin slidably received in said bore, said setting pin having a flared distal portion to expand said distal portion of said rivet upon sliding movement of said setting pin, said setting pin being composed of a resorbable material, said surgical fastener further comprising indexing means for preventing distal movement of said setting pin relative to said rivet when said setting pin has been moved within said bore to any one of several discrete positions relative to said rivet, said indexing means including i) a plurality of longitudinally spaced apart circumferential ridges positioned along said proximal portion of said setting pin, each ridge having an inclined proximal surface and a flat distal surface extending radially outward, and ii) a flat proximally facing stop wall positioned in said rivet, said distal surface of each said ridge being resiliently engageable with said proximally facing stop wall to prevent distal movement of said setting pin relative to said rivet once said ridge is moved proximal to said stop wall, said inclined proximal surface of each said ridge permitting further proximal movement of said pin within said bore. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A surgical fastener for securing soft tissue to bone, which comprises:
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(a) a rivet having an axial bore, distal locking means for frictionally engaging the bone to secure the rivet thereto, a proximal head portion integral to said rivet, and a plurality of tissue engaging barbs integral with said head portion, said barbs projecting distally from said head portion; and (b) a pin receivable into said bore and proximally slidable therein, said pin having means for activating said rivet locking means in response to proximal movement of said pin with the bore, said rivet locking means being movable between an inactivated configuration and an activated configuration, and said pin having an end portion distal to said rivet locking means when said rivet locking means is in said inactivated configuration. - View Dependent Claims (33)
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Specification