Electrically self-powered surgical instrument with manual release

Abstract

A surgical instrument comprising a surgical end effector having an actuation assembly operable to effect a surgical procedure when actuated, a part of the actuation assembly being movable between a first position and second position, and a handle connected to the end effector for actuating the actuation assembly, the handle having a power supply disposed within the handle, a motor disposed within the handle and electrically powered by the power supply, a transmission connecting the motor to the moving part and operational to displace the moving part anywhere between the first and second positions when the motor is operated, and a manual release mechanism that selectively interrupts the transmission and, during interruption, displaces the moving part towards the first position independent of operation of the motor.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is:[0002]a divisional of U.S. patent application Ser. No. 13 / 089,041, filed on Apr. 18, 2011; and[0003]a divisional of U.S. patent application Ser. No. 12 / 245,017, now U.S. Pat. No. 7,959,050, filed on Oct. 3, 2008 (which application claims the priority of U.S. Provisional Patent Application Ser. No. 60 / 977,489, filed on Oct. 4, 2007);[0004]is a continuation in part of U.S. patent application Ser. No. 12 / 034,320, filed Feb. 20, 2008;[0005]is a continuation in part of U.S. patent application Ser. No. 13 / 847,971, filed on Mar. 20, 2013;[0006]is a continuation in part of U.S. patent application Ser. No. 13 / 798,369, filed on Mar. 13, 2013;[0007]is a continuation in part of U.S. patent application Ser. No. 13 / 743,179, filed on Jan. 16, 2013;[0008]is a continuation in part of U.S. patent application Ser. No. 13 / 622,819, filed on Sep. 19, 2012;[0009]is a continuation in part of U.S. patent application Ser. No. 13 / 611,881, filed ...

AI Technical Summary

Benefits of technology

The present invention is an electrically self-powered surgical device that uses its own power to perform medical procedures. It uses the power to position the anvil and stapler cartridge with respect to tissue, and then to fire and secure the staples or cut the tissue. The device also indicates to the user the level of compressive force being applied to the tissue before firing the staples. The offset-axis configuration for the anvil and staple firing sub-assemblies makes the device easier to handle and reduces manufacturing costs. The device also includes a manual release device for recovery from partial actuation or jam.

Problems solved by technology

It also decreases manufacturing difficulty by removing previously required nested (co-axial) hollow shafts.

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