XIAOYU ZHANG
Broker in Boston, MA
License number
Massachusetts 9501043
Issued Date
Oct 17, 2006
Expiration Date
Jun 18, 2017
Type
Salesperson
Address
Address
Boston, MA 02467
Professional information
Surgical Knife Safety Handle Having User Operable Lock
US Patent:
2011009, Apr 21, 2011
Filed:
Dec 22, 2010
Appl. No.:
12/929008
Inventors:
Dana M. Cote - Saugus MA, US
Brian D. Rapp - Nashua NH, US
Paul E. Karnafel - Foxborough MA, US
Xiaoyu Zhang - Chestnut Hill MA, US
Brian D. Rapp - Nashua NH, US
Paul E. Karnafel - Foxborough MA, US
Xiaoyu Zhang - Chestnut Hill MA, US
International Classification:
A61B 17/32
US Classification:
606167
Abstract:
A surgical knife safety device having a handle, a blade connected to the handle, and a guard carried by the handle for sliding movement between a retracted position in which the blade is exposed for use, and an extended position for covering the sharp cutting edge of the blade. In the retracted position, an enlarged guard radius is provided at the distal end of the handle to allow improved handle control and blade orientation. The enlarged guard radius is positioned to allow the user to firmly grip a large distal handle portion which is preferably molded as a single piece with the blade holder, preventing unwanted blade or handle movement due to guard mechanism tolerances. A spring, such as leaf spring or a cantilever beam, and a pair of detents or slots are provided to fix the guard in the extended or retracted position and to provide resistance during movement between the two positions.
Surgical Knife Safety Handle Having User Operable Lock
US Patent:
7909840, Mar 22, 2011
Filed:
Oct 19, 2005
Appl. No.:
11/252575
Inventors:
Dana M. Cote - Saugus MA, US
Brian D. Rapp - Nashua NH, US
Paul E. Karnafel - Foxborough MA, US
Xiaoyu Zhang - Chestnut Hill MA, US
Brian D. Rapp - Nashua NH, US
Paul E. Karnafel - Foxborough MA, US
Xiaoyu Zhang - Chestnut Hill MA, US
Assignee:
Beaver-Visitec International (US), Inc. - Lake Forest IL
International Classification:
A61B 17/32
US Classification:
606167
Abstract:
A surgical knife safety device having a handle, a blade connected to the handle, and a guard carried by the handle for sliding movement between a retracted position in which the blade is exposed for use, and an extended position for covering the sharp cutting edge of the blade. In the retracted position, an enlarged guard radius is provided at the distal end of the handle to allow improved handle control and blade orientation. The enlarged guard radius is positioned to allow the user to firmly grip a large distal handle portion which is preferably molded as a single piece with the blade holder, preventing unwanted blade or handle movement due to guard mechanism tolerances. A spring, such as leaf spring or a cantilever beam, and a pair of detents or slots are provided to fix the guard in the extended or retracted position and to provide resistance during movement between the two positions. Additionally, a pushback prevention mechanism, a user operable lock and a drop-force operable lock are provided to prevent accidental retraction of the guard from the fully extended and guarded position.