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a technology of reducer and rod, which is applied in the field of surgical instruments, can solve the problems of difficult access and the difficulty of surgeons being frequently faced with the task, and achieve the effect of convenient rod attachment and efficient and convenient us
Inactive Publication Date: 2014-03-18
WARSAW ORTHOPEDIC INC
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[0008]The present invention provides instrumentation for rod reduction during orthopedic surgery that are efficient and convenient to use. The instruments eliminate the need for direct application of manual force to a rod to position it in a desired location relative to a fastener. The instruments can also facilitate attachment of the rod to the fastener, and have application in both open surgical procedures and minimally invasive surgical procedures.
Problems solved by technology
However, such access can be difficult depending on such factors as the malformation to be corrected and the overall physiology of the patient, and can be very difficult in procedures in which surgical invasiveness is to be minimized, as a result of the small ports or incisions of such procedures.
Additionally, with use of mono-axial screws, the physiology of the patient can require that the screw be placed at an angle such that the surgeon would have difficulty accessing and exerting force in the necessary orientation on the rod and / or fixation element.
Consequently, the surgeon is still frequently faced with the task of reducing a rod from an awkward angle.
Method used
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[0055]For the purposes of promoting an understanding of the principles of the invention, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the invention is thereby intended. Any such alterations and further modifications in the illustrated device, and any such further applications of the principles of the invention as illustrated therein, are contemplated as would normally occur to one skilled in the art to which the invention relates.
[0056]Referring to FIGS. 1-3, there is shown a first embodiment of a rod reducer instrument 50 according to the present invention. In normal use in the patient's body rod reducer instrument 50 is oriented so that its actuator assembly 51 is located proximally, indicated by the letter “P” and accessible by the surgeon, and the opposite end of instrument 50 is oriented distally, indicated by the letter “D”...
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Abstract
Rod reducers for use in orthopedic surgery are disclosed that include a fastener engaging member and a reducing member coupled together by an actuator assembly. The fastener engaging member can be secured to a fastener engaged to bone or tissue of the patient. The actuator assembly moves the reducing member such that its distal end contacts a rod and moves it toward the fastener.
Description
CROSS REFERENCE TO RELATED APPLICATION[0001]The present applicationThis application is a reissue of U.S. Pat. No. 6,790,209, issued on Sep. 14, 2004, which is hereby incorporated by reference, as if fully set forth herein. U.S. Pat. No. 6,790,209 matured from U.S. application Ser. No. 10 / 186,780, filed Jul. 1, 2002. U.S. patent application Ser. No. 10 / 186,780 is a continuation of U.S. patent application Ser. No. 09 / 898,626, filed on Jul. 3, 2001 and now issued as U.S. Pat. No. 6,440,133 filed Aug. 27, 2002.FIELD OF THE INVENTION[0002]The present invention concerns surgical instrumentation for moving one part of a surgical implant into adjacent position or contact with another. In particular, the invention contemplates rod reducer instruments for use in placing or moving an orthopedic rod toward a bone fixation element.BACKGROUND OF THE INVENTION[0003]In the field of orthopedic surgery, and particularly spinal surgery, it is well known to correct an injury, malformation, or other def...
Claims
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Application Information
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