Abstract: A muzzle brake mounts to the barrel of a gun and reduces the recoil when the gun is fired. The muzzle brake comprises a supersonic nozzle including an expansion chamber configured to accelerate the propellant gases exiting the barrel of the gun and a reverser plate to at least partially reverse the flow of the propellant gases to reduce or mitigate recoil.

Abstract: A surgical system includes a surgical instrument, an aspiration flow rate measurement device, a vacuum force measurement device, and an indicator. The surgical instrument has an aspiration portion and is located in a media type. The aspiration flow rate measurement device is configured to measure the flow rate generated by the aspiration portion. The vacuum force measurement device is configured to measure the vacuum force generated by the aspiration portion. The indicator provides an indication of the media type in which the surgical instrument is located. The indication is based on aspiration flow rate measurement information, vacuum force measurement information, and an operation and configuration of the surgical instrument.

Abstract: A method of mitigating an intraoperative hypotony condition using experimental calibrations of different infusion cannulas and vitrectomy probes showing the relationship between infusion pressure, cut rate, and intraocular pressure for various levels of aspiration vacuum in an ophthalmic surgical system.

Abstract: A surgical system includes a surgical instrument, an aspiration flow rate measurement device, a vacuum force measurement device, and an indicator. The surgical instrument has an aspiration portion and is located in a media type. The aspiration flow rate measurement device is configured to measure the flow rate generated by the aspiration portion. The vacuum force measurement device is configured to measure the vacuum force generated by the aspiration portion. The indicator provides an indication of the media type in which the surgical instrument is located. The indication is based on aspiration flow rate measurement information, vacuum force measurement information, and an operation and configuration of the surgical instrument.

Abstract: A method and apparatus for use in suturing tissue using a suture material. The apparatus includes first and second clamping members which are able to draw the suture material through the tissue. The apparatus further includes a handle portion which is used to remotely actuate the first and second clamping members.

Abstract: A device is described for folding an IOL and thereafter holding it in its folding state, which comprises a member foldable into two sections of substantially equally dimensions, each of said sections having a shoulder portion dimensioned to receive an edge of the optic of an unfolded IOL and to hold the IOL in the plane of the member when the member is in an unfolded state. A method of folding a foldable IOL along the diameter thereof comprises placing said IOL in the device of claim 1 so that the edges of the optic rest on the shoulders and the optic is substantially centered along the fold line of said member, and folding said sections together.A case is also described for the device which is capable of holding the device with an IOL in an unfolded state.