Method and apparatus for determining parameters of linear motion in a surgical instrument

A technology for surgical instruments and motion parameters, which is applied in the field of parameters and devices used to determine linear motion in surgical instruments, and can solve the problems of increasing mechanical wear of surgical instruments

Active Publication Date: 2011-10-19
TYCO HEALTHCARE GRP LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, rotational sensors and other existing types of sensors contribute in significant ways to the size, length, diameter, weight and complexity of surgical instruments
In addition, many of the

Method used

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  • Method and apparatus for determining parameters of linear motion in a surgical instrument
  • Method and apparatus for determining parameters of linear motion in a surgical instrument
  • Method and apparatus for determining parameters of linear motion in a surgical instrument

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Embodiment Construction

[0038] Embodiments of the presently disclosed surgical instrument will now be described in detail with reference to the drawings, wherein like reference numerals designate like or corresponding elements of each of the several views. As used herein, the term "distal" refers to that portion of the surgical instrument, or component thereof, that is farther from the user, while the term "proximal" refers to that portion of the surgical instrument, or component thereof, that is closer to the user.

[0039] A surgical instrument according to the present disclosure, such as a powered surgical stapler, is referenced 10 in the figures. first reference figure 1 , powered surgical instrument 10 includes a housing 110, an elongated shaft 140 defining a first longitudinal axis A-A, and an end effector 160 defining a second longitudinal axis B-B. Elongated shaft 140 extends distally from housing 110 , and end effector 160 is disposed adjacent a distal portion of elongated shaft 140 . In s...

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PUM

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Abstract

The invention discloses a surgical instrument and method of controlling the surgical instrument, especially discloses a method and apparatus for determining parameters of linear motion in a surgical instrument. The surgical instrument includes a housing and an elongated shaft that extends distally from the housing and defines a first longitudinal axis. The surgical instrument also includes a firing rod disposed in the elongated shaft and a drive mechanism disposed at least partially within the housing. The drive mechanism mechanically cooperates with the firing rod to move the firing rod. A motion sensor senses a change in the electric field (e.g., capacitance, impedance, or admittance) between the firing rod and the elongated shaft. The measurement unit determines a parameter of the motion of the firing rod, such as the position, speed, and direction of the firing rod, based on the sensed change in the electric field. A controller uses the measured parameter of the motion of the firing rod to control the drive mechanism.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application Serial No. 61 / 313,231, filed March 12, 2010, which is hereby incorporated in its entirety. This disclosure is also a continuation-in-part of U.S. Patent Application Serial No. 12 / 189,834, filed August 12, 2008, which claims U.S. Provisional Patent Application Serial No. 60 / 997,854, filed October 5, 2007 priority of the , the entire contents of which are hereby incorporated. technical field [0003] The present disclosure relates to methods and devices for manipulating or deploying surgical fasteners into body tissue. In particular, it relates to methods and apparatus for determining motion parameters of a firing rod in a surgical instrument based on an electric field associated with the firing rod. Background technique [0004] Current surgical instruments typically require 10-60 pounds of manual force to clamp and deploy surgical fasteners into bo...

Claims

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Application Information

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IPC IPC(8): A61B17/072
CPCA61B17/07207A61B34/76A61B2017/00022A61B2017/00199A61B2017/00734A61B2090/0811
Inventor 戴维·M·麦丘恩
Owner TYCO HEALTHCARE GRP LP
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