A treatment support device is provided with an irradiation unit, a fluorescence detection unit, and a change acquisition unit for acquiring a change degree of a fluorescence signal detected within a first time range within a treatment time. The treatment support device is provided with: a determination unit for determining whether or not the progress of the treatment is in a steady state based on the fact that the change degree of the fluorescence signal within the first time range falls within a predetermined range of the change degree; and an operation control unit for performing predetermined operation control when the progress of the treatment is determined to be in the steady state by the determination unit.

Systems and methods are provided for illumination of the periorbital exterior of the eye and the interior of the eye with a non-invasive (or non-penetrating), trans-corneal, trans-conjunctival, trans-scleral, non-incandescent, and/or low-temperature light source. In some examples a ring structure is configured to sit on a surface area of an eye, the ring structure having a top surface and a bottom surface, wherein the bottom surface is configured to touch the eye. A plurality of light-emitting elements is configured in the ring structure and a plurality of apertures is configured on the bottom surface of the ring structure, wherein the plurality of light-emitting elements is aligned with the plurality of apertures. A signal carrier runs along at least a portion of the ring structure, the signal carrier having one end configured to connect to a signal source and receive at least one of light and electricity from the signal source, and one or more opposite ends respectively coupled with the plurality of light-emitting elements.

Various examples are directed to systems and methods for operating a surgical instrument comprising a firing member translatable proximally and distally along a longitudinal axis between a stroke begin position to a stroke end position distal of the stroke begin position; a knife coupled to the firing member; and a motor coupled to the firing member to translate the firing member between the stroke begin position and the stroke end position. A control circuit may receive a firing signal and begin a firing member stroke by providing an initial motor setting to the motor. The control circuit may maintain the initial motor setting for an open-loop portion of the firing member stroke. The control circuit may receive energy data describing energy provided to the motor during the open-loop portion of the firing member stroke and may select a firing control program based at least in part on the energy data.

An end effector for use with a surgical stapling instrument is disclosed. The end effector comprises a first jaw, a second jaw movable relative to the first jaw to grasp tissue therebetween, and a staple cartridge. The staple cartridge comprises staples deployable into the tissue. The end effector further comprises a magnetic sensor configured to measure a parameter indicative of an identifying characteristic of the staple cartridge, an impedance sensor configured to measure a parameter indicative of an impedance of the tissue, and a processing unit in communication with the impedance sensor. The processing unit is configured to determine a property of the tissue based on an output of the impedance sensor.

Devices, systems, and methods to measure a baseline temperature of a tissue prior to a laser ablation procedure are disclosed. The devices can be a thermometer including an optical fiber probe and a catheter. The catheter includes nanodiamonds embedded into a wall of the catheter. The nanodiamonds are excited by light from the optical fiber probe to emit a temperature dependent fluorescent light that is received by the optical fiber probe and transmitted to a temperature sensor. The temperature sensor can process the fluorescent light to calculate a temperature. The thermometer can be positioned adjacent to or within a target tissue structure prior to a laser ablation procedure to measure the baseline temperature. The baseline temperature can be input into a magnetic resonance imaging system to calculate a thermal damage estimate.

A medical device may include an ablation device configured to deliver ablation energy to a treatment site. The medical device may further include a probe device configured to deliver excitation radiation to the treatment site. Further the medical device may include a radiation-receiving device configured to receive photoluminescence radiation emitted from the treatment site in response to the treatment site being illuminated by the excitation radiation and to generate a detection signal in response to the received photoluminescence radiation. Additionally, the excitation radiation may be different from the ablation energy.

Methods and systems for performing ablation are disclosed. An example system for performing ablation on a tissue includes a catheter having at least one lumen in which a first optical fiber configured to carry a first light beam is disposed and a second optical fiber configured to carry a second light beam is disposed, and a processor being configured to measure a volume of blood within the target site of the tissue using a blood perfusion sensor, determine that the volume of blood within the target site is below a predetermined threshold based on one or more characteristics detected by the blood perfusion sensor, each characteristic being associated with at least one of the first light beam and the second light beam, and perform the ablation on the target site of the tissue when the volume of blood within the target site is below the predetermined threshold.

The present disclosure is related to field of Fiber Feedback (FFB) technology and provides a method and system for estimating the distance between a fiber end and a target. The method includes illuminating, by a Light Emitting, Transmitting and Detecting (LETD) system, the target with laser light of different wavelengths having low and high-water absorption coefficients, using different laser light sources, as well as receiving a returned signal corresponding to the incident laser light of different wavelengths, and detecting the returned signal to measure intensity values of the returned signal of a specific wavelength. Using the measured intensity values, a processing unit may estimate distance between the fiber end and the target. The present disclosure enables accurate estimation of distance between a fiber end and the target. The present disclosure also provides a robust distance estimation technique which is compatible with different types of targets.

A system is provided that furnishes expert procedural guidance based upon patient-specific data gained from surgical instruments incorporating sensors on the instrument's working surface, one or more reference sensors placed about the patient, sensors implanted before, during or after the procedure, the patient's personal medical history, and patient status monitoring equipment. Embodiments include a system having a surgical instrument with a sensor for generating a signal indicative of a property of a subject tissue of the patient, which signal is converted into a current dataset and stored. A processor compares the current dataset with other previously stored datasets, and uses the comparison to assess a physical condition of the subject tissue and/or to guide a procedure being performed on the tissue.

Systems, devices, and methods for determining advancement of a surgical laser fiber in an endoscope and providing interlocking feedback for the surgical laser are disclosed. An exemplary method includes directing light from a distal end of an endoscope to a target, optically detecting an amount of the light reflected from the target, transmitting the optically detected amount of light through a laser fiber extending through a working channel of the endoscope, determining, based on the optically detected amount of light, a position of a distal end of the laser fiber relative to the distal end of the endoscope, and generating a control signal to the surgical laser system to adjust laser emission through the laser fiber.