172results about How to "Avoid aspiration" patented technology

Electrosurgical methods, systems, and apparatus for the controlled ablation of tissue from a target site, such as a synovial joint, of a patient. An electrosurgical probe of the invention includes a shaft, and a working end having an electrode array comprising an outer circular arrangement of active electrode terminals and an inner circular arrangement of active electrode terminals. The electrode array is adapted for the controlled ablation of hard tissue, such as meniscus tissue. The working end of the probe is curved to facilitate access to both medial meniscus and lateral meniscus from a portal of 1 cm. or less.

A pumping system for use in medical applications where liquids must be infused and aspirated from a mammalian patient, and whose economics are such that it is cost effective to simply dispose of it after a single use. The system features positive displacement pump(s) such as reciprocating pump(s) containing a damping mechanism to dampen out the peaks and valleys in the fluid pressure that is pumped, which is important for preventing cavitation. The system furthermore features a shut-off valve on the extraction side so that certain injected fluids such as contrast medium, are not immediately pumped out of the patient. In a preferred embodiment, the system also features means for independently controlling the fluid pressure/volume on the infusion and extraction sides, self-priming capability, a continuous fluid path, and visual air bubble detection, with viewports located at important points in the fluid path, such as at pumps and valves.

The present invention provides porous barrier compositions comprising color change indicators and methods of making and using the same.

The present invention includes a catheter locking solution having both antimicrobial and anticoagulant properties including a local anesthetic and a viscosifying agent. The local anesthetic of the present invention may be an amino amide; an amino ester; an aminoacylanilide; an aminoalkyl benzoate; an amino carbonate; an N-phenylamidine compound; an N-aminoalkyl amid; an aminoketone, or combinations and mixtures thereof. In a particular embodiment of the present invention, the local anesthetic is tetracaine or dibucaine.

An electrosurgical instrument having active and return electrodes with a movable suction sheath for variable fluid and debris removal during surgical procedures is disclosed. The suction apparatus has an outer sheath that is external to a shaft to provide a lumen. The sheath assembly is axially movable relative to the fluid aspiration element between first and second positions for treating the target site and fluid and debris removal, respectively. The first position positions the distal end of the shaft axially distal to a leading edge of the sheath assembly. The second position positions the distal leading edge of the sheath assembly axially adjacent to the end of the shaft. The fluid aspiration element comprises an inner lumen extending through the shaft, and at least one port extending radially through the shaft. The port is in communication with the inner lumen. A vacuum provides suction through the port and inner lumen.

Cuff pressure modulation results in decreased severity of injury to the subglottic region and upper trachea. A simple device is capable of modulating the pressure in the cuff of a regular endotracheal tube, by coordinating the pressure level to be maximal during the inspiratory phase and minimal during the expiratory phase. This allowed for regular positive airway pressure ventilation as during inspiration the seal was maintained between the ETT and the tracheal mucosa by the inflated cuff, but during expiration cuff deflation allowed the cuff pressure to drop in the subglottic and tracheal area.

A manually operated implement comprising a housing for accommodating a drive motor that drives a tool. A fan wheel is disposed in the housing and is driven by the drive motor. A fan wheel cover covers the fan wheel toward the outer side of the housing. Ribs are disposed on the outer surface of the fan wheel cover and span an intake opening of the fan wheel cover in the vicinity of the fan wheel. Beyond the intake opening, the ribs form channels, and upper faces of the ribs that face away from the outer surface of the fan wheel cover form an intake face that in a second area of the ribs is disposed transverse to the outer surface of the fan wheel cover.

A syringe configured with a limited maximum usable capacity. The syringe of the invention desirably has a retractable needle to prevent reuse. In the preferred embodiment, a dose-limiting structure includes a stop-ring member on the head of the plunger that abuts a constriction in the housing when the plunger is moved away from the needle to prevent the further rearward movement of the plunger. Preferably, the syringe of the invention is configured such that a user is tactilely signaled when the plunger has reached a position corresponding to a nominal fixed-dose. If the user attempts to force the stop-ring member beyond the constriction, the plunger seal is stripped off or removed from the plunger head and the syringe rendered inoperable. The features of the invention can also be applied to a nonretracting syringe.

A medical valve assembly including a rigid external housing and a valve stem of a resilient material. The valve stem includes a passageway for conveying a fluid which has an hourglass shape to create a venturi effect when cleaning the valve stem to improve the efficiency of the cleaning process. The passageway also includes no sharp edges, thus reducing the risk of fluid getting trapped inside the passageway when the medical valve assembly is not in use. Even further, when a needleless syringe is removed from the valve stem, the valve stem expands to an uncompressed state with its top end being generally flush with an end of the housing to present a swabable surface for cleaning purposes.

The invention relates to a steel pipe surface multi-stage grinding treatment machine. The steel pipe surface multi-stage grinding treatment machine comprises a mounting base, a fixed base, a limitingplate, grinding devices, inner support devices and a screw, the limiting plate is mounted between the upper end of the mounting base and the upper end of the fixed base, the grinding devices are evenly distributed between the limiting plate and the screw, the inner support devices are mounted on the centers of the grinding devices, and are mounted on the mounting base, the screw is mounted betweenthe mounting base and the fixed base through a bearing, the screw is located on the right below end of the limiting plate, and the problems that after an existing traditional grinding machine grindsa steel pipe, the surface is still not smooth, dust scrap materials remaining on the steel pipe surface can cause scratches and hollow points in the grinding process of the steel pipe, in the grindingprocess, the dust scrap materials floating in the air can appear, after being aspirated by a worker, the materials can cause body discomfort, and heat generated in the grinding process can damage thegrinding devices are solved.

The invention discloses an LED wafer dead pixel picking sorting method. The method comprises the following steps that (1) a to-be-tested wafer for dead pixel picking is provided; (2) core grains on the wafer are tested one by one; (3) crystal grains proven to be dead pixels through testing results are marked; (4) a film is attached to the surface of the wafer, and the dead pixel crystal grains are bonded with the film through marks; and (5) the film is torn down so that the dead pixel crystal grains can be separated from the wafer. According to the LED dead pixel picking wafer sorting method, the dead pixels on the wafer are removed at a time by bonding the film with the dead pixel crystal grains, the dead pixel removal rate and success rate are greatly increased, operation is simple and convenient, and manpower is saved.

An anti-reflux laryngeal mask is characterized by comprising a vent hood bag, a ventilating tube, a gastric tube channel and a suction pipeline. The vent hood bag is integrated with the ventilating tube, the gastric tube channel stretches into one side of the ventilating tube, extends to the top of the vent hood bag, and is connected with a gastric tube channel opening arranged on the top of the vent hood bag, the suction pipeline is arranged inside the vent hood bag, at least one suction pipeline opening is arranged beside the gastric tube channel opening, and the suction pipeline is connected with a hollow drainage tube and extends out of the top of the vent hood bag. By the anti-reflux laryngeal mask, possibility of reflux aspiration can be greatly reduced, and the service safety of the laryngeal mask is improved. Besides, during positive-pressure ventilation, the anti-reflux laryngeal mask can prevent gas from entering the stomach of a patient to cause gaseous distention, and physical suffering of the patient after a surgery is reduced.

The invention provides an initial positioning device, container and method. The container comprises a container body, a variable pressure assembly, a metering channel and a discharging channel; when the pressure of the variable pressure assembly is decreased, objects contained in the container body enter the metering channel; when the pressure of the variable pressure assembly is increased, the objects contained in the metering channel flow outwards through the discharging channel. The container further comprises the initial positioning device. The initial positioning device comprises a backflow cavity, a backflow channel and an assembly capable of closing the backflow channel. The backflow cavity is communicated with the variable pressure assembly and the initial end of the metering channel. The initial end of the metering channel is higher than the bottom of the backflow cavity. The backflow channel is communicated with the bottom of the backflow cavity and the container body. The container is simple in structure, convenient to use and accurate in metering.

The present invention relates to a fuel pump (1) which comprises a pump housing (2), a delivery element (3) for delivering fuel, a heat-generating actuator (4) for actuating the delivery element (3), a first fuel path (5) which leads from an inlet (20) to a delivery space (7), and a second fuel path (6) which leads from the inlet (20) past the heat-generating actuator (4) to a first housing opening (21), wherein the first housing opening (21) is arranged above the inlet (20) in the vertical direction (V). The present invention also relates to a fuel pump arrangement which comprises a fuel pump (1) according to the invention and a fuel tank (10) in which the fuel pump (1) is at least partially and preferably entirely arranged. The present invention also relates to a method for operating a fuel pump (1).

The invention discloses a high efficient rapidly-complementing energy bag for childbirth of lying-in women and a preparation method of the high efficient rapidly-complementing energy bag, and belongs to the technical field of jelly beverages and special diet foods. The high efficient rapidly-complementing energy bag is characterized by being prepared from a childbirth energy jelly bag and an electrolyte water replenishing liquid bag. The high efficient rapidly-complementing energy bag disclosed by the invention has the following advantages and beneficial effects that a unique sectional type energy complementing formula is adopted, so that safe, quick and continuous high energy can be provided for natural childbirth lying-in women within a short time; and besides, electrolyte and vitamins losing during childbirth are complemented. The high efficient rapidly-complementing energy bag is convenient to take, and is in the shape of a jelly, so that the high efficient rapidly-complementing energy bag is easy to swallow, aspiration pneumonia due to mistaken aspiration of the lying-in women is avoided, and the defects of chocolates and other functional beverages are overcome; the high efficient rapidly-complementing energy bag is fresh in mouth feel, easy to absorb, and easy to digest, sequential energy supply only needs 15 minutes, and energy supply is long and lasting, so that the high efficient rapidly-complementing energy bag can help the lying-in women to realize normal childbirth, the childbirth period is shortened, and suddenly-arising conditions of dystocia, fetal asphyxia and the like due to insufficient childbirth force of the lying-in women are effectively avoided. Products of the high efficient rapidly-complementing energy bag are easy to produce, and normal to eat, and any dangers and toxic and side effects cannot be caused for bodies.