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Handle for endoscopic surgical instruments and jaw structure    
United States Patent5476479   
Link to this pagehttp://www.wikipatents.com/5476479.html
Inventor(s)Green; David T. (Westport, CT); Aranyi; Ernest (Easton, CT); Tovey; Ian J. (Milford, CT)
AbstractAn endoscopic or laparoscopic surgical instrument having an internally disposed ratchet mechanism located within a barrel portion of a handle assembly. The instrument includes a handle assembly having a pivoting handle and a stationary handle, a barrel portion to which an elongated body assembly is secured, and a ratchet mechanism for releasably positioning a tool mechanism located at the distal end of the body assembly at various increments. The ratchet mechanism comprises a pawl member and a rack member which are disposed within the handle assembly. A rotational knob and locking member may also be provided to lock the body assembly at various orientations to the longitudinal axis. The tool assembly includes novel atraumatic jaw mechanisms incorporating flexural characteristics to better gauge the force being applied to the captured tissue. The novel jaw mechanisms further includes increased tissue gripping surface area and multiple tissue handling portions which allow users to use fewer instruments and reduce the time to perform procedures.
   














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Drawing from US Patent 5476479
Handle for endoscopic surgical instruments and jaw structure - US Patent 5476479 Drawing
Handle for endoscopic surgical instruments and jaw structure
Inventor     Green; David T. (Westport, CT); Aranyi; Ernest (Easton, CT); Tovey; Ian J. (Milford, CT)
Owner/Assignee     United States Surgical Corporation (Norwalk, CT)
Patent assignment
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Publication Date     December 19, 1995
Application Number     08/371,515
PAIR File History     Application Data   Transaction History
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Litigation
Filing Date     January 11, 1995
US Classification    
Int'l Classification    
Examiner     Apley; Richard J.
Assistant Examiner     Flanagan; Beverly M.
Attorney/Law Firm    
Address
Parent Case     CROSS REFERENCE TO RELATED APPLICATION This is a continuation of application Ser. No. 07/932,230 filed on Aug. 19, 1992 which is a continuation-in-part of application Ser. No. 07/781,069 filed on Oct. 18, 1991 which is a continuation-in-part of application Ser. No. 07/765,993 filed on Sep. 26, 1991; all applications now abandoned.
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Patent Tags     handle endoscopic surgical instruments jaw
   
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