366 results about "Diffusion chamber" patented technology

Sutureless, implantable fluid shunting devices and associated methods for controlling the pressure of fluids within anatomical spaces or cavities of the body. The device generally comprises a tube having a diffusion barrier (e.g., diffusion chamber) formed on a proximal end thereof. Fluid which flows through the tube will collect within the diffusion chamber and will diffuse outwardly therethrough. However, the presence of the diffusion chamber will prevent microbes, cells or other matter from interfering with or backflowing through the tube. Additionally, the tube may be provided with a pressure-openable aperture through which fluid from the tube may flow into the diffusion chamber. Such pressure-openable aperture will remain closed, until the pressure of fluid within the tube exceeds a predetermined maximum pressure PMAX. In this manner, the pressure-openable aperture will limit the amount of fluid drained from the anatomical space or cavity of the body, thereby avoiding hypotony within such anatomical space or cavity. The diffusion barrier of the device is preferably configured to fit between, and to be engaged by, adjacent recti muscles of the eye. Such engagement of the diffusion barrier with the adjacent recti muscles serves to prevent unwanted migration or post-implantation movement of the device, without the need for suturing of the device to the tissue of the eye.

A catheter is adapted to ablate tissue and provide lesion qualitative information on a real time basis, having an ablation tip section with a generally omni-directional light diffusion chamber with one openings to allow light energy in the chamber to radiate the tissue and return to the chamber. The chamber is irrigated at a positive pressure differential to continuously flush the opening with fluid. The light energy returning to the chamber from the tissue conveys a tissue parameter, including without limitation, lesion formation, depth of penetration of lesion, cross-sectional area of lesion, formation of char during ablation, recognition of char during ablation, recognition of char from non-charred tissue, formation of coagulum around the ablation site, differentiation of coagulated from non-coagulated blood, differentiation of ablated from healthy tissue, tissue proximity, and recognition of steam formation in the tissue for prevention of steam pop.

The present invention provides a diffusion coefficient measuring instrument, in the concrete, it relates to a device for measuring rock diffusion coefficient. Said measuring instrument includes rock sample diffusion device, pressure balance device, pressure pump and vacuum pump. Said rock sample diffusion device, includes core chamber, rock sample sealing cover, diffusion chamber, plunger, plunger-pulling bar, end cover, regulating screw rod and fixing frame. Besides, said invention also provides the working principle of said diffusion coefficient measuring instrument.

An oil atomizer apparatus for essential and fragrant oils includes at least one atomizer that engages with a container of essential and fragrant oils, and a body with a generally hollow interior and having a mixer housing associated with one surface of the body. An oil feeder tube extends from the mixer housing and through a surface of the body to the container of essential and fragrant oils. The mixer housing includes a compressed air inlet of a first diameter which is larger than a second diameter of the inlet, which passes to a diffusion chamber in the mixer housing having a passage to the body of the container. The application of compressed air to the inlet of the mixer housing causes the essential and fragrant oils to be dispersed to air in a fine droplet form through at least one aperture in the body.

A method for super-oxygenating water is provided. The method includes combining water and first oxygen, manipulating the combined water and first oxygen into a vortex so as to cause the first oxygen to diffuse into the water and yield first oxygenated water, combining the first oxygenated water with second oxygen, and passing the first oxygenated water / second oxygen combination through a cone system that spins the combination to yield super-oxygenated structured water. Water and oxygen are directed through a spray nozzle and manipulated into a vortex as the water and oxygen enter a diffusion chamber. The spray nozzle is sized and oriented such that the vortex generated in the diffusion chamber is adequate to diffuse the oxygen into the water as they travel through the vortex and exit the diffusion chamber.

The present invention relates to a showerhead that supplies a source gas and a supporting gas for depositing a film into a processing vessel of a film deposition apparatus. The showerhead includes a body which is provided with a gas jetting surface (8). In the showerhead body, there are defined a first diffusion chamber (60) that receives the source gas and diffuses the same, and a second diffusion chamber (62) that receives the supporting gas and diffuses the same. The gas jetting surface has source-gas jetting orifices (10A) that are in communication with the first diffusion chamber, and first supporting-gas jetting orifices (10B) that are in communication with the second diffusion chamber. Each of the first supporting-gas jetting orifices (10B) are formed into a ring shape that adjacently surrounds a corresponding one of the source-gas jetting orifices (10A).

A turbine airfoil usable in a turbine engine and having at least one cooling system. The turbine airfoil may include an interlayer coupled to an outer surface of the outer wall of the airfoil, wherein the interlayer may be formed from a porous material that allows cooling fluids to pass through the interlayer. The floating wall may be coupled to an outer surface of the interlayer, wherein the floating wall may be formed from a plurality of floating wall segments positioned in close proximity to each other but with a film cooling slot positioned between the adjacent wall segments to enable cooling fluids to be exhausted from the elongated hollow airfoil. The cooling system may include an outer wall diffusion chamber positioned in the outer wall and an interlayer diffusion chamber. One or more metering holes may be in communication with the outer wall and interlayer diffusion chambers.

Present invention depicts a poly-porous (micropore) hollow screws as diffusion chamber filled with core matrix for targeted delivery of growth factors and bone marrow stem cells. The screws comprise at least two parts: the distal part of the screw consists of the tip of the screw made of poly porous material and hollow inside proximally. It has threaded navel attached to the threaded nipple of the distal part of the proximal screw which has the screw head and is made of the solid material of the same kind. The screw head had hexagonal recess targeted for screw driver insertion. Assembly of screw created a chamber in the middle of the screw. The chamber is filled with core matrix consisting of gelatin nano-particles pre-impregnated with BMPs (BMP2 / BMP7 for bone or BMP12 for tendon, ligament) and fibrin sealants or Chitosan dispersed with bone marrow stem cells and / or other growth factors. Bioactive protein core material is prepared during the surgery and filled the chamber of the screw by the surgeon. Fibrin sealants or Chitosan will polymerize to form a gel to hold the growth factors and stem cell in place. The screw can be used as the lag screw or other function to provide mechanical fixation in variety of condition. Once the screw implanted in the human body, the fibrin sealant or Chitosin / gelatin nano-particles are gradually degraded and slowly release growth factors and stem cells via micropores of screw to facilitate the bone healing and regeneration. The gelatin nanoparticles and fibril sealant / or Chitosan matrix also serve as the scaffold and platform for bone in-growth to the screw or alternatively, the stem cell inside of screw can regenerate new bone, providing the biological fixation. At the mean time as the bone regenerate and / or in growth, mechanical strength of the screw increased.