摘要:
A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel. The bubble valve includes a fluid meniscus interfacing the microchannel interior and an actuator for deflecting the membrane into the microchannel interior to regulate fluid flow. The actuator generates a gas bubble in a liquid in the microchannel when a sufficient pressure is generated on the membrane.
摘要:
A compression garment including a bladder having a reduced inflatable volume. Connector elements positioned inside an inflatable chamber of the bladder limit expansion of the bladder for limiting a fluid volume required for fully inflating or expanding the bladder. A controller inflates and deflates the inflatable chamber for imparting compression therapy on a body part on which the garment is worn. The reduced inflation volume of the inflatable chamber reduces the demand on a pump of the controller.
摘要:
A microfabricated sheath flow structure for producing a sheath flow includes a primary sheath flow channel for conveying a sheath fluid, a sample inlet for injecting a sample into the sheath fluid in the primary sheath flow channel, a primary focusing region for focusing the sample within the sheath fluid and a secondary focusing region for providing additional focusing of the sample within the sheath fluid. The secondary focusing region may be formed by a flow channel intersecting the primary sheath flow channel to inject additional sheath fluid into the primary sheath flow channel from a selected direction. A sheath flow system may comprise a plurality of sheath flow structures operating in parallel on a microfluidic chip.
摘要:
A catheter includes an elongated tubular body including a first wall and second wall defining first and second lumens, respectively. Each wall extends to a distal end and defines a distal opening. The first and second walls may each include one or more side openings disposed proximal of the distal end. The first and second lumens are separated by a septum. The septum includes a septum extension extending distally from the septum. The septum extension is adapted to articulate relative to the septum in response to fluid flow into and out of the distal openings of the first and second lumens. The septum extension is dimensioned to partially obstruct fluid flow into the catheter through one of the distal openings upon the articulation of the septum extension.
摘要:
A compression sleeve configured for a conforming fit to a portion of a wearer's body, such as a leg. The compression sleeve includes at least one inflatable bladder. The sleeve has a periphery including at least six edges and is configured to wrap around the wearer's leg so that the bladder encircles the limb for applying compression therapy to the limb. The shape of the sleeve conforms to the limb of the wearer and keeps the sleeve in place on the limb.
摘要:
A compression garment assembly comprises a compression garment adapted for placement on a body part in a self-retaining configuration and for removal from the body part. The compression garment has at least one inflatable bladder for applying compression to the body part. A portable controller unit is adapted for fluid connection to the inflatable bladder and is configured for cyclically inflating the bladder. The compression garment and portable controller unit are configured so that the portable controller unit must be disconnected from the compression garment before the compression garment can be removed from the body part. Loss of the portable controller unit by, for example, accidental disposal with the compression garment is thus prevented.
摘要:
A monopolar electrosurgical apparatus is disclosed which includes a tissue removal device having electrical, mechanical and chemical tissue removal capabilities. The device can be operated to use any of its tissue removal capabilities alone or in combination with one or more of the other capabilities.
摘要:
A single disposable cartridge for performing a process on a particle, such as particle sorting, encapsulates all fluid contact surfaces in the cartridge for use with microfluidic particle processing technology. The cartridge interfaces with an operating system for effecting particle processing. The encapsulation of the fluid contact surfaces insures, improves or promotes operator isolation and/or product isolation. The cartridge may employ any suitable technique for processing particles.
摘要:
A compression garment for providing compression therapy to a body part. The garment includes a flexible wrap and a bladder held by the wrap for compressing the body part. The garment also includes a fastener for holding the wrap on the body part in a self-retaining configuration. A grip is provided to facilitate tightening of the wrap on the body part. In one embodiment, the grip comprises an opening in the wrap sized and shaped for receiving a finger of a user.
摘要:
An improved actuator for use in a microfluidic particle sorting system utilizes a staggered packing scheme for a plurality of actuators used to selectively deflect a particle in an associated sorting channel from a stream of channels. An actuator block may be provided for housing a two-dimensional array of actuators, each configured to align with an actuation port in an associated sorting chip containing a plurality of sorting channels. The actuator block may include a built-in stressing means to pre-stress each actuator housed by the block. An actuator comprising a piezo-electric stack may employ contact-based electrical connection rather than soldered wires to improve packing density. The actuator may be an external actuator. That is, the external actuator is external to the substrate in which the sorting channels are formed.