A surgical stapling device particularly suited for endoscopic procedures is described The device includes a handle assembly and an elongated body extending distally from the handle assembly The distal end of the elongated body is adapted to engage a disposable loading unit A control rod having a proximal end operatively connected to the handle assembly includes a distal end extending through the elongated body A control rod locking member is provided to prevent movement of the control rod until the disposable loading unit is fully secured to the elongated body of the stapling device

Surgical Stapling Apparatus

An endoscopic bipolar forceps includes an elongated shaft having opposing jaw members at a distal end thereof. The jaw members are movable relative to one another from a first position wherein the jaw members are disposed in spaced relation relative to one another to a second position wherein the jaw members cooperate to grasp tissue therebetween. The forceps also includes a source of electrical energy connected to each jaw member such that the jaw members are capable of conducting energy through tissue held therebetween to effect a seal. A generally tube-like cutter is included which is slidably engaged about the elongated shaft and which is selectively movable about the elongated shaft to engage and cut tissue on at least one side of the jaw members while the tissue is engaged between jaw members.

Vessel sealer and divider

A surgical stapling instrument (1) comprises a body portion (2, 3), a handle (4) and a staple fastening assembly (8). The staple fastening assembly (8) includes a curved cartridge (10), which comprises at least one curved open row of staples, and a curved anvil (22), which is adapted to cooperate with the cartridge (10) for forming the ends of the staples exiting from the cartridge (10). The staple fastening assembly (8) is adapted to allow unobstructed access towards the concave inner faces of the cartridge (10) and the anvil (22). The cartridge (10) can be moved towards the anvil (22) from a spaced position for positioning tissue therebetween to a closed position for clamping the tissue. Preferably, a knife is contained within the cartridge (10) and is positioned such that there is at least one row of staples on at least one side of the knife.

Surgical stapling instrument

Newness and distinctiveness is claimed in the features of ornamentation as shown inside the broken line circle in the accompanying representation.

Display screen or portion thereof with graphical user interface

A surgical instrument can comprise a channel configured to support a staple cartridge and, in addition, an anvil pivotable between open and closed positions relative to the channel. The surgical instrument can further comprise a cutting member configured to incise tissue positioned captured between the staple cartridge and the anvil and, in addition, means for stopping the cutting member prior to a distal end datum, wherein the distal end datum can be defined by the distal-most staple cavity in the staple cartridge. In such embodiments, the incision within the tissue may not extend beyond the portion of the tissue that has been stapled.

Surgical stapling instrument with an articulatable end effector

In an electrosurgery system having a radio frequency generator and an instrument with
a treatment electrode, the generator includes a circuit for sensing thermionic emission
from the electrode as means of controlling the supply of radio frequency power to the
electrode. Thermionic emission
is related to the electrode temperature and has a rectifying effect on
the RF at the output thus allowing the appearance of a DC voltage
component on the plates of the output condenser. Sensing such DC voltage
is therefore a means to detect thermionic emission and electrode
temperature. Such DC voltage can be detected
using a detector with an isolated output, and generator output power is
controlled so as to limit the DC voltage to a predetermined threshold. Accordingly, the
temperature of the electrode can be limited to avoid electrode destruction. The invention
also has application to reducing nerve stimulation due to electrosurgical treatment.

Electrosurgery system and instrument

An electrosurgery system has an electrosurgical generator operable to generate electrosurgical power at a frequency in the UHF band (typically 2.45 GHz), a feed structure, and an electrode assembly for delivering the electrosurgical power to tissue to be cut. The electrode assembly has an elongate active electrode which, at the operating frequency, is λ/8 in length (λ being the wavelength in air) and has an active surface area of less than 30 square millimetres. A return electrode set back proximally from the active electrode is arranged so as to be capacitively coupled to tissue adjacent the active electrode and is isolated from the feed structure in respect of an unbalanced currents. Tissue cutting occurs due to thermal dissipation of UHF power in the tissue substantially without arcing, resulting from the lossy dielectric behaviour of the tissue.

UHF electrosurgery system

A method for skin treatment comprises the steps of delivering at least one pulse of radio frequency power to at least one electrode in order to create an electric field; passing gas through the electric field in order to form plasma from the gas; and applying the plasma to the surface of skin. The amount of radio frequency power may be relatively low such that the application of plasma causes denaturation of collagen within the collagen-containing tissue beneath the skin surface, which may promote the generation of new collagen within the collagen-containing tissue.

Tissue treatment method

An electrosurgical method and apparatus comprises a probe, at least one temperature sensor, and a controller for generating and controlling electromagnetic energy supplied to the probe. The controller receives signals from the temperature sensor and controls the supply of electromagnetic energy such that the temperature of the probe is ramped up and then maintained at a steady state temperature of between 100° C. and 115° C. In an equilibration phase, between the ramping up and the steady state temperature, the controller holds the temperature of the probe substantially constant for a period of time to allow the temperature of different parts of the probe to equilibrate.

Electrosurgical method and apparatus

PROBLEM TO BE SOLVED: To provide an electrosurgical instrument and an electrosurgical tool converter capable of limiting the supply of energy to a place of a requesting tissue without giving an excessive damage to the tissue. SOLUTION: This electrosurgical instrument has coaxial inner and outer cylindrical members 1, 2 formed of conductive material to constitute a coaxial transmission line. The inner member 1 is preferably formed to have such dimension as to receive an abdominal operation instrument with operating element of a tool projecting over the distal end 1D of the inner member 1. The inner member 1 itself may contain an operating member at the distal end. The outer member 2 is connected to the inner member 1 in a place distant from the distal end 1D of the inner member 1, and at the distal end side of a connecting point 7 between the inner and outer members, a radio frequency(r, f) feeder 4 is connected to the inner member 1. Serial impedance between both the connecting points (4), 7 is formed by the inner member 1 between the connecting points, or formed by the operational frequency of an instrument having a radio frequency(r, f) separation structure related to the inner member.

Francis Amoah

Papers

Electrosurgery system and instrument

UHF electrosurgery system

Tissue treatment method

Electrosurgical method and apparatus

Electro surgical instrument and electrosurgical tool converter