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System for applying fasteners to tissue
| Details |
Inventors: Bolduc, Lee; Kramer, Thomas A.; Hodges, Brian A.; McCoy, Tim; Lunsford, John;
Assignee: Origin Medsystems, Inc. (Menlo Park, CA)
Primary Examiner: Schmidt; Jeffrey A.
Assistant Examiner:
Attorney, Agent or Firm: Fulwider, Patton, Lee & Utecht, LLP
A helical fastener having a high retentive surface area is provided and has a first end for enhancing penetration into tissue and a second end comprising a coil sectioning a diameter of the fastener for receiving longitudinal and rotational forces. The helical fasteners are attached to body tissue by a fastener applicator having a proximal portion comprising a handle and an actuator and an elongate distal portion for housing a plurality of fasteners. A transferring action of the actuator provides longitudinal and rotational movement of the fasteners out of the distal portion and into body tissue. |
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DETAILED DESCRIPTION The invention includes a surgical fastener and an applicator used in delivering the fastener into body tissue.
The fastener and applicator of the present invention may be used in a number of medical procedures including ligating tissue, hernia mesh repair, bladder neck suspension, and in conjunction with implant drug delivery systems or procedures involving positioning of surgical or implantable devices in a patient's body.
The preferred embodiment of the surgical fastener of the present invention is formed into the configuration of a continuous helical coil.
The continuous helical coil is longitudinally collapsible and expandable.
At the distal end of the helical fastener is a point for enhancing penetration into tissue.
The proximal end of the helical fastener has a T-bar which sections the diameter of the fastener, thereby providing a surface for receiving and transmitting longitudinal and rotational forces so that the fastener may be driven into tissue by a corkscrew action.
The pitch and length of the helical fastener may vary upon the application as can its diameter and configuration of the most proximal and distal coils comprising the fastener.
Additionally, the material selection and fastener stiffness may be selected with a particular application in mind.
In another embodiment of the surgical fastener, the fastener comprises a double continuous helical coil that is also longitudinally collapsible and expandable and may embody various configurations depending upon the application.
Moreover, the distal end of the double helical fastener comprises two points for enhancing penetration into tissue and its proximal end comprises a connector bar which connects the two helixes as well as sections the diameter of the double helical fastener.
In yet another embodiment, the surgical fastener further comprises a pivot post extending through the center of the fastener and operating to provide the fastener with a stable pivot.
In any of the embodiments, one or more barbs may be employed near the point to enhance anchoring characteristics
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