摘要:
A surgical system comprises a hand piece, an irrigation conduit in fluid communication with the hand piece to carry fluid toward a surgical site, an aspiration conduit in fluid communication with the hand piece to carry fluid away from the surgical site, a pump interfacing with the aspiration conduit, the pump to create a vacuum pressure in the aspiration conduit to draw fluid through the aspiration conduit, a vacuum relief valve in fluid communication with the aspiration conduit to relieve the vacuum pressure in the aspiration conduit, a pressure sensor to detect a pressure associated with the surgical site, a controller in communication with the vacuum relief valve and the pressure sensor to control the vacuum relief valve to decrease the vacuum pressure in the aspiration conduit when the pressure detected by the pressure sensor is less than a first pressure threshold.
摘要:
The present invention is directed to a pharmaceutical submicron suspension and a method of forming the submicron suspension. The submicron suspension is useful for delivery of relatively hydrophobic and/or low solubility therapeutic agent. The submicron suspension and method of forming the submicron suspension typically employ a polymeric material that aids in preventing aggregation of the therapeutic agent.
摘要:
A microfluidics acoustic pump system includes a flow passage configured to carry a fluid from one location to another, a selectively vibrating flow generator having a sharp edge, and a driving device configured to vibrate one of the flow generator and the flow passage to create a streaming fluid flow in a direction away from the sharp edge through the flow passage.
摘要:
Various systems and techniques for inserting an intraocular lens are disclosed. In particular implementations, a system and a technique for inserting an intraocular lens may include the ability to move, in response to a force being applied in a first direction along a longitudinal axis, a first plunger tip along the longitudinal axis and into a delivery cartridge to fold an intraocular lens and move in a second direction along the longitudinal axis in response to the applied force being reduced. The system and the technique may also include the ability to engage a second plunger tip and move, in response to a force being applied in the first direction along the longitudinal axis, the second plunger tip along the longitudinal axis and into the delivery cartridge to insert the intraocular lens.
摘要:
Membrane forceps for performing an ILM or ERM peel procedure include a handle, a tube extending from the handle, and forceps jaws extending from the tube. The forceps jaws may be configured to grasp an ILM or ERM, and may include an outer surface having a roughened surface. The roughened surface may be structurally configured to aid in gaining an edge of the ILM or ERM.
摘要:
An IOP monitoring device for implantation in an eye of a patient may include a first tube having a first opening, the first tube being configured to extend into the anterior chamber. An intraocular pressure sensing (IOP) device for implantation in an eye of a patient may include a pressure sensor, a pressure sensor cap, and a tube coupled to a chamber inlet. The pressure sensor cap may include a recess having an inner surface, the recess configured to receive the pressure sensor such that a chamber is formed by the pressure sensor and the inner surface and a chamber inlet permitting a fluid to communicate with the chamber and be primed in a bubble-free manner. The tube may be coupled to the chamber inlet to allow fluid communication between an anterior chamber of the eye and the chamber.
摘要:
The present invention relates to artificial tear formulations and ophthalmic formulations suitable for drug delivery. The formulations comprise galactomannans such as guar or hydroxypropyl guar and a borate source such as boric acid. The formulations further comprise a cis-diol such as sorbitol that interferes with the cross-linking of galactomannan and borate. Optionally, the formulations are substantially free of divalent cations.
摘要:
Example forceps, including forceps formed from a polymeric material, are disclosed herein. The forceps may include a forceps tip having a pair of grasping surfaces formed at a first end of a tip body and movable between an open position and a closed position. A tip connector is provided at a second end of the tip body for connection of the forceps tip to a handle. A sleeve is received over the tip body and is movable therealong for moving the grasping platforms between the open and closed positions.
摘要:
A vitrector that includes an adjustable illumination aperture is described. The vitrector may include a probe and a light sleeve assembly extending along and substantially surrounding the probe. The light sleeve assembly may include a plurality of optical fibers. At least a portion of the optical fibers are operable to provide illumination so as to define an illumination aperture about the vitrectomy probe. A portion of the optical fibers may be encapsulated. The light sleeve assembly may be adjustable along a length of the probe, providing adjustment of the illumination aperture to increase or decrease an area of illumination provided thereby.
摘要:
In various embodiments, a device for delivering pressurized irrigation may include a squeeze plate and a pressure sensor module. The squeeze plate may move relative to the pressure sensor module to apply pressure to a flexible container (e.g., a bag of irrigation fluid) between the squeeze plate and the pressure sensor module. The pressure sensor module may include a pressure sensor to measure a force exerted on the pressure sensor module by the flexible container as pressure is applied to the flexible container from the squeeze plate. In some embodiments, the pressure sensor module may include a bag contact plate and the pressure sensor may measure a force exerted on the bag contact plate by the flexible container located between the bag contact plate and the squeeze plate. In some embodiments, the pressure sensor may sense a pressure associated with the flexible container without an intervening bag contact plate.