Left and right inferior border osteotomy blade saw
First Claim
1. An osteotomy blade saw comprising:
- a substantially straight first arm having a first free end and a second end;
a substantially straight second arm substantially coplanar with said first arm in a first plane, extending from said second end of said first arm and making an obtuse angle therewith at a first end and having a second, distal end;
a neck portion connected to said second end of said second arm, having a reduced cross section an making an acute angle with said second arm in a second plane substantially at right angles to said first plane;
a substantially straight end portion connected to a distal end of said neck portion at a first, proximal end and terminating in a second, free end, said end portion being disposed substantially in a third plane parallel to but displaced from said first plane, said end portion making a substantially right angle with an imaginary line representing a projection of said second arm onto said third plane, and said end portion including a blade mounting means for mounting a cutting blade; and
a cutting blade mounted on said end portion, disposed in said third plane and having teeth extending generally away from said end portion;
wherein a reciprocating motion of said first arm along its length while at least some of said teeth of said cutting blade are in contact with a bone results in a sawcut in said bone.
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Accused Products
Abstract
An osteotomy blade saw is provided in left-offset and right-offset embodiments for performing sagittal ramus osteotomies. The blade saw has first and second straight arm portions forming an obtuse angle between them, the end of the second arm terminating in a neck portion which angles acutely away from the plane containing the arms and terminates in an end portion on which a cutting blade is mounted. The blade lies in a plane parallel to the plane containing the arms and is offset to the right and left depending on the embodiment. Supplying reciprocating linear motion to the first arm allows the saw to be used in cutting bone. The blade saw in its two preferred embodiments can be used to score and cut the underside of the right and left inferior borders of the mandible, respectively, through incisions inside the mouth.
39 Citations
24 Claims
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1. An osteotomy blade saw comprising:
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a substantially straight first arm having a first free end and a second end; a substantially straight second arm substantially coplanar with said first arm in a first plane, extending from said second end of said first arm and making an obtuse angle therewith at a first end and having a second, distal end; a neck portion connected to said second end of said second arm, having a reduced cross section an making an acute angle with said second arm in a second plane substantially at right angles to said first plane; a substantially straight end portion connected to a distal end of said neck portion at a first, proximal end and terminating in a second, free end, said end portion being disposed substantially in a third plane parallel to but displaced from said first plane, said end portion making a substantially right angle with an imaginary line representing a projection of said second arm onto said third plane, and said end portion including a blade mounting means for mounting a cutting blade; and a cutting blade mounted on said end portion, disposed in said third plane and having teeth extending generally away from said end portion; wherein a reciprocating motion of said first arm along its length while at least some of said teeth of said cutting blade are in contact with a bone results in a sawcut in said bone. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A surgical tool comprising:
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a first arm having a free first end and a second end; a second arm connected at first end to said second end of said first arm at an obtuse angle and defining a first plane therewith, and having a second end; a neck portion connected at a first end to said second end of said second arm, and having a second end, said neck portion projecting out of said first plane; an end portion having a first end connected to said second end of said neck portion and having a free second end, said end portion lying substantially in a second plane which is laterally offset from said first plane defined by said first and second arms; and a cutting blade mounted on said end portion in said second plane and oriented so as to cut along a line parallel to a portion of said first arm adjacent said free end of said first arm. - View Dependent Claims (20, 21, 22, 23, 24)
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Specification