30219 results about "Vacuum pump" patented technology

A medical instrument sterilization method is disclosed, which characterizes in following process: pending medical instrument for sterilization treatment being placed in a closed container, then being vacuum pumped, the vacuum pressure of the container being controlled between 1 Pa to 1500 Pa, air and/or oxygen and/or inert gases are charged to closed container and the vacuum pressure being between 1 Pa to 1500 Pa, microwave is fed, the favorable power of which should make the gas charged into the container to generate ionization, the microwave be cut after the sterilization, then air being charged to release vacuum to finish the whole process.

In an electric vacuum pump, a pump housing and a lower-end cover member respectively include positioning retainers respectively formed on outer peripheries of the pump housing and the lower-end cover member. A case includes positioning retainers each protruding inward from an inner peripheral surface of the case. The positioning retainers are in contact with the positioning protrusions, thereby positioning the pump housing and the lower-end cover member with respect to the case. The positioning protrusions are formed with screw holes.

Method and apparatus for obtaining a sample of blood from a patient for subsequent diagnostic tests, e.g., glucose monitoring. In one aspect of the invention, the method comprises the steps of:

• • (a) placing a blood collection device over a region on the surface of the skin from which said sample is to be obtained,
  • (b) forming a seal between said blood collection device and said surface of the skin,
  • (c) creating a vacuum sufficient to result in said surface of the skin becoming stretched and engorged with blood,
  • (d) triggering a lancing assembly and causing a lancet to penetrate said skin,
  • (e) retracting said lancet,
  • (f) withdrawing blood toward and onto a fluid collector, and
  • (g) releasing the vacuum.

In another aspect of the invention, an apparatus for carrying out the method described previously is provided. The apparatus comprises:

• • (a) a housing having a sealable chamber located therein and a sealable opening in fluid communication with said sealable chamber,
  • (b) a power source,
  • (c) a vacuum pump operably connected to said power source, said vacuum pump in communication with said sealable chamber,
  • (d) a lancing assembly positioned within said housing, said lancing assembly capable of moving a lancet towards said sealable opening, and
  • (e) a fluid collector positioned in said sealable chamber, said fluid collector in fluid communication with said sealable opening.

The composite wound dressing apparatus promotes healing of a wound via the use of an external peristaltic vacuum pump. The external peristaltic pump applies a vacuum pressure to the wound to effectively draw wound fluid or exudate away from the wound bed. The external peristaltic pump is tethered to the wound dressing and is portable, preferably, carried by the patient in a support bag, which permits patient mobility. Moreover, the patient does not need to be constrained for any period of time while exudate is being removed from the wound.

A wound closure apparatus is disclosed which includes a housing that contains a vacuum pump and a chamber for holding a disposable wound fluid collection canister. The canister resides within the chamber and connects at an outlet with the vacuum pump and at an inlet with a pad. The pad is placed over a wound and adhesively secured thereto. When the vacuum pump activates, it evacuates air from the canister resulting in wound fluids flowing from the wound into the canister. After the canister is filled, it is removed from the chamber and replaced with another canister to continue the removal of wound fluids.

The present invention relates to a vacuum evacuation system used to evacuate a processing gas from one or more process chambers for use in, for example, a semiconductor-device manufacturing apparatus. The vacuum evacuation system is a vacuum apparatus for evacuating a gas from a plurality of process chambers (1). The vacuum evacuation system includes a plurality of first vacuum pumps (5) coupled to the plurality of process chambers (1) respectively, a collecting pipe (7) coupled to the plurality of first vacuum pumps (5), and a second vacuum pump (8) coupled to the collecting pipe (7).

A processing apparatus includes a process container having a placing table for placing a processing object, an exhaust system having vacuum pumps and a pressure control valve for exhausting atmosphere in the process container. A gas injection unit having a gas ejection hole is provided in the process container, as well as a gas supplying unit for supplying a process gas to the gas injection unit. The entire process apparatus is controlled by a controlling unit. The control unit controls the exhaust system and the gas supplying unit. When starting a predetermined process, the process gas at a flow rate greater than a prescribed flow rate is supplied for a short time while exhausting the atmosphere in the process container by the exhaust system, and then the process gas at a prescribed flow rate is supplied.

A method and apparatus for alerting a user of topical negative pressure therapy apparatus to a full waste canister condition are described, the apparatus comprising a device having vacuum pump means and a waste canister connected to the device and the waste canister operably connected to a wound dressing by aspiration conduit means for aspirating fluid from the wound, the aspiration conduit means, the waste canister and the device providing a fluid flow path therethrough and the vacuum pump means providing fluid flow through the apparatus, the apparatus further comprising fluid flow restriction means in the fluid flow path of said vacuum pump and fluid pressure sensing means upstream and downstream of said fluid flow restriction means.

Provided is a substrate-processing device capable of preventing a top lid from sagging downward by the own weight of the substrate-processing device and/or a vacuum suction force generated by a vacuum pump and/or thermal shock at high temperature process, in a chamber including a plurality of reactors. Also, provided is a rotating shaft for transferring a substrate between the plurality of reactors.

An apparatus and method are disclosed for monitoring and/or detecting concentrations of a chemical precursor in a reaction chamber. The apparatus and method have an advantage of operating in a high temperature environment. An optical emissions spectrometer (OES) is coupled to a gas source, such as a solid source vessel, in order to monitor or detect an output of the chemical precursor to the reaction chamber. Alternatively, a small sample of precursor can be periodically monitored flowing into the OES and into a vacuum pump, thus bypassing the reaction chamber.

Pressure swing adsorption separation of a feed gas mixture, to obtain a purified product gas of the less strongly adsorbed fraction of the feed gas mixture, is performed with a cooperating set of "N" adsorbers in a rotary assembly, with each adsorber communicating at its product end directly to a rotary cyclic displacement chamber, and at its feed end by rotary distributor valve ports to a rotary piston feed compressor and a rotary piston exhaust vacuum pump. The compressor and vacuum pump are integrated with the cycle, and rotate at "N" times the cycle frequency. Alternative adsorber configurations for high frequency operation are disclosed.

The invention relates to a temperature measurement and calibration platform in space vacuum environment. The temperature measurement and calibration platform is favorable for realizing the simultaneous calibration of contact type temperature measurement and non-contact type temperature measurement, so the temperature measurement and calibration platform is served for heat vacuum and heat balance experiments of spacecrafts such as satellites, spaceship and the like. The temperature measurement and calibration platform comprises a constant temperature bath, wherein a double-sub-cavity vacuum cavity, the double-sub-cavity vacuum cavity comprises a first vacuum cavity body and a second vacuum cavity body, the first vacuum cavity body and the second vacuum cavity body are connected with a vacuum pumping device through a three-way valve, standard temperature indicator sensors are respectively arranged on the outer wall of the first vacuum cavity body and on the outer wall of the second vacuum cavity body, the standard temperature indicator sensors are connected with a temperature secondary meter, a laser light path reflecting device is arranged in the vacuum cavity of the first vacuum cavity body for calibrating a non-contact type temperature measuring system based on the tunable diode laser absorption spectrum technology, and the vacuum cavity of the second vacuum cavity body is used for accommodating a temperature sensor for calibrating a contact type temperature measuring system adopting the temperature sensor.

A pressure control system allows gas to be evacuated out of a semiconductor process chamber at a substantially constant rate of mass flow. A gas line connects the process chamber to a vacuum pump. A controllable valve having a variable sized opening is positioned between the process chamber and the vacuum pump. A pressure sensor is in turn positioned between the valve and the vacuum pump, proximate the inlet to the vacuum pump. The size of the variable sized opening is regulated based upon the pressure in the gas line measured by the pressure sensor. The size of the valve opening is varied to maintain the pressure measured by the pressure sensor at a constant value. As a result, because the quantity of gas flowing through the gas line is proportional to the gas pressure, a substantially constant mass flow of gas out of the chamber and into the pump can be achieved.

A wound closure apparatus having a porous pad adapted to be fluidly connected to a vacuum pump. The pad is placed over or within a tissue site, and the vacuum pump may be activated to draw air and exudates from the tissue site. The pad contains multiple pore sizes to prevent granulation tissue from migrating into the pad as reduced pressure treatment is applied. The pad has an outer surface adjacent the wound with pore sizes of a diameter of approximately 100 microns or less to prevent tissue from growing into the pad and is treated for biocompatibility.

A method of treating tissue damage comprises applying a negative pressure to a wound sufficient in time and magnitude to promote tissue migration and thus facilitate closure of the wound. The method is applicable to wounds, burns, infected wounds, and live tissue attachments. A wound treatment apparatus is provided in which a fluid impermeable wound cover is sealed over a wound site. A screen in the form of an open-cell foam screen or a rigid porous screen is placed beneath the wound cover over the wound. A vacuum pump supplies suction within the wound cover over the treatment site.

A dc accelerator system able to accelerate high currents of proton beams at high energies is provided. The accelerator system includes a dc high-voltage, high-current power supply, an evacuated ion accelerating tube, a proton ion source, a dipole analyzing magnet and a vacuum pump located in the high-voltage terminal. The high-current, high-energy dc proton beam can be directed to a number of targets depending on the applications such as boron neutron capture therapy BNCT applications, NRA applications, and silicon cleaving.