Various aspects of a generator, ultrasonic device, and method for estimating and controlling a state of an end effector of an ultrasonic device are disclosed. The ultrasonic device includes an electromechanical ultrasonic system defined by a predetermined resonant frequency, including an ultrasonic transducer coupled to an ultrasonic blade. A control circuit measures a complex impedance of an ultrasonic transducer, wherein the complex impedance as defined as

[00001]$Z_g\left(t\right)=\frac{V_g\left(t\right)}{I_g\left(t\right)};$

The control circuit receives a complex impedance measurement data point and compares the complex impedance measurement data point to a data point in a reference complex impedance characteristic pattern. The control circuit then classifies the complex impedance measurement data point based on a result of the comparison analysis and assigns a state or condition of the end effector based on the result of the comparison analysis. The control circuit estimates the state of the end effector of the ultrasonic device and controls the state of the end effector of the ultrasonic device based on the estimated state.

A tissue clip application fitting set or retrofitting set includes a cap attachment for placement on the distal head of a medical endoscope, which has a placement section and a tissue clip holding section. The cap attachment is notched at least at two angular positions forming at least two notches/slots/grooves. A working channel leads into the hollow chamber and exits the hollow chamber radially in a region distal to the placement section and proximal to the radially supported tissue clip. A first guiding or leading element is arranged after the working channel belonging to the retrofitting set, as seen in the distal direction. A corresponding second guiding or leading element is arranged within the hollow chamber at an angular distance from the first guiding or leading element so as to be oriented in extension to a working channel belonging to the endoscope.

Described herein are examples of orthopedic reamer heads for preparing a bone to receive an implant, as well as methods of assembling reamer heads. An illustrative example of a modular reamer head can include a body and a cutting system. The body can include a generally dome shape having an outer surface extending from an apex region to a base. The outer surface can have a recess including one or more arcuate channels that extend from the apex region towards the base of the dome. The cutting system can have one or more arcuate elements having cutting elements. One or more arcuate elements can extend from first end portions in the apex region towards second end portions proximate the base. At least a portion of the one or more arcuate elements can be located in the one or more arcuate channels to extend outward beyond the outer surface.

A tissue dissector includes a handle assembly including an actuator, a head portion including a blade member defining an aperture configured to receive tissue therethrough, and a lighting assembly configured to provide lighting to the aperture of the blade member. The blade member is operatively coupled with the actuator for rotation about the aperture.

An endoscope treatment instrument having a sheath, a rotation axis extending in a width direction orthogonal to a longitudinal direction of the sheath, a plate formed with a first opening through which the rotation axis passes and a second opening having a width different from the width of the first opening, a forceps piece rotatably supported about the first opening and the rotation axis passing through the second opening, and a wire connected to a proximal end portion of the plate.

There is provided a process for treatment of rhinitis by diode laser ablation of the branches of the posterior nasal nerve. The diode laser delivery device with elongated fiber optic with its fiber tip is inserted through a patient's nostril and has the length, flexibility and a curvature to reach both above and under the patient's middle turbinate for treatment of both branches of the posterior nasal nerves. Skin and tissue temperature is raised to approximately 60-70° C. with the process. A control knob on the laser delivery device moves from a first to a second position to move a camera attached to the laser delivery device. The fiber optic includes a distal fiber tip extending from a malleable sheath connected to the body for delivering light energy to a treatment area.

A forceps includes an end effector assembly having first and second jaw members movable between a spaced-apart position and an approximated position for grasping tissue therebetween. A knife assembly having a cutting blade disposed at a distal end thereof is also provided. The knife assembly is translatable relative to the end effector assembly between a retracted position and an extended position, wherein the cutting blade extends between the jaw members to cut tissue grasped therebetween. The knife assembly includes a proximal component and a first distal component that includes the cutting blade. The proximal and first distal components are removably coupled to one another to facilitate replacement of the first distal component. Methods of preparing such forceps for reuse are also provided.

Disclosed is a surgery control tool: being no patient implant, including: an elongated body having the shape and the size of a spinal correction rod, end contact parts being able to contact a patient implanted spinal correction rod implant, spacers extending from the elongated body towards the end contact parts.

A rotary surgical tool is provided and has an effector or cutter that is usable to remove or otherwise modify tissue such as bone. The tool includes a motor coupled to the effector with a single piece shaft that is integral with the effector and also serves as the motor output shaft.

A surgical port includes a shell and a seal assembly. The shell has a housing and a cannula that extends from the housing. The housing has a sidewall defining a window therethrough. The seal assembly includes one or more seals. The seal assembly is selectively receivable into the housing through the window of the housing of the shell.