Powered surgical handpiece assemblies and handpiece adapter assemblies
First Claim
1. A powered surgical handpiece assembly comprisinga powered surgical handpiece having a rotatable drive shaft, said handpiece having an open distal end and a passage extending proximally from said open distal end in communication with said drive shaft;
- a handpiece adapter including a housing, a rear drive shaft having a distal end disposed in said housing and a proximal end removably, drivingly engaged with said drive shaft of said handpiece, a front drive shaft having a distal end and a proximal end, and a motion converting mechanism mechanically coupling said proximal end of said front drive shaft with said distal end of said rear drive shaft, said housing including a central longitudinal axis and a plurality of longitudinally extending internal grooves parallel to said central longitudinal axis, said proximal end of said front drive shaft being reciprocatively mounted in said housing, said distal end of said front drive shaft being disposed externally of said housing and said proximal end of said front drive shaft including a plurality of longitudinally extending external grooves, said external grooves being parallel to said central longitudinal axis, each of said external grooves forming an aligned pair of grooves with one of said internal grooves, respectively, and further including a plurality of ball members captured between said housing and said front drive shaft with said ball members including a cam at said distal end of said rear drive shaft and a cam follower at said proximal end of said front drive shaft, said rear drive shaft being rotatable with said drive shaft of said handpiece, said cam being rotatable with said rear drive shaft, said cam follower being reciprocatively moved by said cam to reciprocate said front drive shaft in response to rotation of said cam by said rear drive shaft; and
a cutting member having a proximal end removably coupled with said distal end of said front drive and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated, via said motion converting mechanism, in response to rotation of said drive shaft of said handpiece.
3 Assignments
0 Petitions
Accused Products
Abstract
A surgical handpiece adapter for converting rotary motion of a powered surgical handpiece into reciprocating motion to drive a cutting member includes a rear drive shaft for being removably coupled to a rotatable drive shaft of the handpiece, a front drive shaft for being removably coupled to the cutting member and a motion converting mechanism causing reciprocation of the front drive shaft and, therefore, the cutting member coupled thereto, in response to rotation of the rear drive shaft by the drive shaft of the handpiece. A handpiece adapter assembly is formed by an adapter and a cutting member coupled thereto, and a powered surgical handpiece assembly is formed by an adapter, a cutting member coupled to the adapter and a powered surgical handpiece coupled to the adapter. A cutting member includes a surgical suction rasp for being reciprocatively driven to cut anatomical tissue and having a tissue cutting surface and a suction passage with an inlet opening along the tissue cutting surface for removing anatomical debris from an operative site at which the rasp is used. A cutting member includes an osteotome for being reciprocatively power driven to cut anatomical tissue and having a cutting edge and a blunt tip extending distally of the cutting edge. A method of facial surgery includes the steps of reciprocating a distal end of a rasp to reshape the nasal bone of a patient and removing anatomical debris through a suction passage of the rasp while the nasal bone is being reshaped. Another method of facial surgery includes the steps of reciprocating a distal end of an osteotome via a powered surgical handpiece and moving the distal end of the osteotome, while it is being reciprocated, forwardly along the nasal bone of a patient in a predetermined path with a cutting edge of the osteotome in contact with the nasal bone to make a cut of desired length in the nasal bone along the predetermined path.
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Citations
47 Claims
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1. A powered surgical handpiece assembly comprising
a powered surgical handpiece having a rotatable drive shaft, said handpiece having an open distal end and a passage extending proximally from said open distal end in communication with said drive shaft; -
a handpiece adapter including a housing, a rear drive shaft having a distal end disposed in said housing and a proximal end removably, drivingly engaged with said drive shaft of said handpiece, a front drive shaft having a distal end and a proximal end, and a motion converting mechanism mechanically coupling said proximal end of said front drive shaft with said distal end of said rear drive shaft, said housing including a central longitudinal axis and a plurality of longitudinally extending internal grooves parallel to said central longitudinal axis, said proximal end of said front drive shaft being reciprocatively mounted in said housing, said distal end of said front drive shaft being disposed externally of said housing and said proximal end of said front drive shaft including a plurality of longitudinally extending external grooves, said external grooves being parallel to said central longitudinal axis, each of said external grooves forming an aligned pair of grooves with one of said internal grooves, respectively, and further including a plurality of ball members captured between said housing and said front drive shaft with said ball members including a cam at said distal end of said rear drive shaft and a cam follower at said proximal end of said front drive shaft, said rear drive shaft being rotatable with said drive shaft of said handpiece, said cam being rotatable with said rear drive shaft, said cam follower being reciprocatively moved by said cam to reciprocate said front drive shaft in response to rotation of said cam by said rear drive shaft; and
a cutting member having a proximal end removably coupled with said distal end of said front drive and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated, via said motion converting mechanism, in response to rotation of said drive shaft of said handpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A powered surgical handpiece assembly comprising
a powered surgical handpiece having a rotatable drive shaft, said handpiece having an open distal end and a passage extending proximally from said open distal end in communication with said drive shaft; -
a handpiece adapter including a housing, a rear drive shaft having a distal end disposed in said housing and a proximal end removably, drivingly engaged with said drive shaft of said handpiece, a front drive shaft having a distal end and a proximal end, and a motion converting mechanism mechanically coupling said proximal end of said front drive shaft with said distal end of said rear drive shaft, said proximal end of said front drive shaft being reciprocatively mounted in said housing and said distal end of said front drive shaft being disposed externally of said housing, said motion converting mechanism including a cam at said distal end of said rear drive shaft and a cam follower at said proximal end of said front drive shaft, said reear drive shaft being rotatable with said drive shaft of said handpiece, said cam being rotatable with sid rear drive shaft, said cam follower being reciprocatively moved by said cam to reciprocate said front drive shaft in response to rotation of said cam by said rear drive shaft, said cam having a central longitudinal axis and including a cam head disposed in said housing, said cam having an angled track therein within which said cam follower is disposed, said cam head including forward and rearward cam head sections between which said track is disposed, said rearward cam head section having a maximum length and a minimum length disposed at a 180°
spaced location from said maximum length about said central longitudinal axis of said cam, said cam follower including a protrusion on said front drive shaft disposed in said track, said distal end of said front drive shaft being in a maximum longitudinal position beyond said housing when said maximum length is in longitudinal alignment with said protrusion; and
a cutting member having a proximal end removably coupled with said distal end of said front drive shaft and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated, via said motion converting mechanism, in response to rotation of said drive shaft of said handpiece. - View Dependent Claims (17)
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18. A powered surgical handpiece assembly comprising
a powered surgical handpiece having a rotatable drive shaft, said handpiece having an open distal end and a passage extending proximally from said open distal end in communication with said drive shaft; -
a handpiece adapter including a housing, a rear drive shaft having a distal end disposed in said housing and a proximal end removably, drivingly engaged with said drive shaft of said handpiece, a front drive shaft having a distal end and a proximal end, and a motion converting mechanism mechanically coupling said proximal end of said front drive shaft with said distal end of said rear drive shaft, said motion converting mechanism including a cam at said distal end of said rear drive shaft and a cam follower at said proximal end of said front drive shaft, said rear drive shaft being rotatable with said drive shaft of said handpiece, said cam being rotatable with said rear drive shaft, said cam follower being reciprocatively moved by said cam to reciprocate said front drive shaft in response to rotation of said cam by said rear drive shaft;
a cutting member having a proximal end removably coupled with said distal end of said front drive shaft and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated, via said motion converting mechanism, in response to rotation of said drive shaft of said handpiece, said said distal end of said front drive shaft including a passage receiving said proximal end of said cutting member; and
an operating member carried on said front drive shaft for selectively opening said passage to receive said proximal end of said cutting member and for selectively closing said passage to secure said proximal end of said cutting member to said front drive shaft, said operating member including a longitudinal passage extending entirely therethrough and said front drive shaft being disposed in said passage of said operating member to pass entirely therethrough, said operating member being rotatable relative to said front drive shaft, said operating member being movable longitudinally in a first longitudinal direction in response to rotation of said operating member being movable longitudinally in a second longitudinal direction in response to rotation of said operating member in a second rotational direction, opposite said first rotational direction, relative to said front drive shaft. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A handpiece adapter assembly for apowered surgical handpiece comprising
a handpiece adapter including a housing, rear drive shaft having a proximal end for being removably coupled with a rotatable drive shaft of a powered surgical handpiece and having a distal end, a front drive shaft having an open distal end disposed distally of said housing and having a proximal end, a motion converting mechanism by which said proximal end of said front drive shaft is in driving engagement with said distal end of said rear drive shaft, and an alignment member in said housing, said rear drive shaft being rotatable with the drive shaft of the handpiece when said drive shaft is coupled therewith, said motion converting mechanism including a cam rotatable with said rear drive shaft and a cam follower reciprocatively moved by said cam in response to rotation of said cam with said rear drive shaft, said front drive shaft being movable with said cam follower whereby said front drive shaft is reciprocated relative to said rear drive shaft when said rear drive shaft is rotated by the drive shaft of the handpiece, said front drive shaft having a longitudinal passage extending proximally from said open distal end to terminate in said housing, said alignment member being disposed in said passage; - and
a cutting member having a proximal end removably coupled with said distal end of said front drive shaft and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated in response to rotation of said rear drive shaft by the drive shaft of the handpiece, said proximal end of said cutting member being configured to drivingly engage said alignment member to removably couple said proximal end of said cutting member to said distal end of said front drive shaft with said distal end of said cutting member in a predetermined orientation relative to said adapter. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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Specification