During superior anterior cervical approaches through transnasal route during surgeries such as odontoidectomy for basilar invagination, resection of anterior cervical spinal cord lesions or tumors as well as chordomas, the posterior wall of the nasal pharynx/basopharyngeal fascia and the atlantooccipotal membrane, longus capitis muscle, and longus coli muscles are incised and attempted to be retracted with suction, while manipulating bony areas. One issue which occurs during these procedures, is that the surgeon's field of view is obstructed by the nasal pharynx wall. The obstructed view can result in longer surgeries and a higher risk of complications.
To overcome this issue, a surgeon typically will use suction to retract the tissue on either side as well as using the suction to remove bony debris or blood. Retracting using the suction, however, can only be used unilaterally (one fold is retracted), thus the view of the odontoid is still obstructed.
This disclosure provides a transnasal odontoid retractor that can retract tissue unilaterally or bilaterally, the retractor can include one or more retractor shafts that can be controlled using, for example, a forcep. The retractor can also be removably attached to a suction. Further the retractor can include two shafts, where each shaft includes a retractor tip. In other embodiments the retractor can be built either integrally or removably from a suction.
A user grasps handles of the distal forcep 114 to control one or more retractor shafts 102 and 104. Specifically, pressing the handles 118 moves one or more retractor shafts from a closed position as shown in
In the embodiments described herein, the working length of the retractor can be 13 cm to 15 cm, and the total width of the retractor when in the bilateral open position (i.e., both retractor shafts are open) can be 1.5 cm at maximum diameter. The suction tubes described herein can be a 7 or 9 French diameter with 15 cm to 17 cm length. It should be understood that other dimensions can be employed without departing from the scope of this disclosure. In addition, the suction hole can be a tear-drop shape, or other suitable configuration for controlling suction.
While embodiments have been illustrated and described herein, it is appreciated that various substitutions and changes in the described embodiments may be made by those skilled in the art without departing from the spirit of this disclosure. The embodiments described herein are for illustration and not intended to limit the scope of this disclosure. For example, while the retractor herein has, in some embodiments, been characterized as a transnasal odontoid retractor, it should be understood that the embodiments described can be used in other surgical applications such as, without limitation, transsphenoidal surgery, trans-ethmoid surgery, endoscopic strip craniectomy, keyhole craniotomy.
This application claims priority from U.S. Provisional Patent Application No. 62/478,057, which was filed on Mar. 29, 2017, which application is hereby incorporated herein by reference in its entirety.
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Number | Date | Country | |
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Number | Date | Country | |
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62478057 | Mar 2017 | US |