1732 results about "Cylindrical tube" patented technology

Spinal stabilization devices and their methods of insertion and use to treat degenerated lumbar, thoracic or cervical spinal discs in minimally invasive, outpatient procedures are described. In one embodiment, the spinal stabilization device is an expandable cage made of a coil or perforated cylindrical tube with a bulbous or bullet-shaped distal end and a flat or rounded proximal end. In a preferred embodiment, the spinal stabilization device is mechanically expanded to a larger diameter or is made of a superelastic nickel-titanium alloy which is thermally programmed to expand to a relatively larger diameter when a pre-determined transition temperature below body temperature is reached. To treat a degenerated disc, a guide wire is inserted into the disc and an endoscope is inserted through a posterolateral puncture in the back and advanced up to the facet of the spine. Mechanical tools or laser energy, under endoscopic visualization, are used to remove or vaporize a portion of the facet bone, creating an opening into the foraminal space in the spine for insertion of an endoscope, which enables the disc, vertebra and nerves to be seen. The passageway is expanded, mechanical tools or laser of RF energy are used to make a tunnel into the disc, and a delivery cannula is inserted up to the opening of the tunnel. An insertion tool is used to insert one or more spinal stabilization devices into the tunnel in the disc, preserving the mobility of the spine, while maintaining the proper space between the vertebra. Laser or radio frequency (RF) energy is used to coagulate bleeding, vaporize or remove debris and shrink the annulus of the disc to close, at least partially, the tunnel made in the disc.

A very small diameter intravascular stent device which may be used to occlude or partially occlude an aneurysm in the human brain which is comprised of a thin-walled skeletal cylindrical tube formed of undulating or sinusoidal elements which, when compressed, nest tightly with each other.

A method for displaying in a coherent manner the changes over time of a web site's structure, usage, and content is disclosed. Time tubes are generated by a method of displaying a related series of graphs. Time tubes illustrate changes in a graph that undergoes one or more transformations from one state to another. The transformations are displayed using the length of the cylindrical tube, filling the length of the time tube with planar slices which represent the data at various stages of the transformations. Time tubes may encode several dimensions of the transformations simultaneously by altering the representation of size, color, and layout among the planar slices. Temporal transformations occur when web pages are added or deleted over time. Value-based transformations include node colors, which may be used to encode a specific page's usage parameter. Spatial transformations include the scaling of physical dimension as graphs expand or contract in size. The states of a graph at various times are represented as a series of related graphs. In a preferred embodiment, an inventory of all existing nodes is performed so as to generate a list of all nodes that have existed at any time. This inventory is used to produce a layout template in which each unique node is assigned a unique layout position. To produce each planar slice, the specific nodes which exist in the slice are placed at their respective positions assigned in the layout template. In another aspect, corresponding nodes in planar slices are linked, such as with translucent streamlines, in response to a user selecting a node in a planar slice by placing his cursor over the selected node, or to show clustering of two or more nodes in one planar slice into a single node in an adjacent planar slice.

A stent-graft has a closed web configuration in which end stent crowns or apexes do not extend beyond an end of a tubular graft. In order to permit interaction of the endmost crowns with tip capture fingers or prongs of a delivery system, the graft covers the endmost crowns but the endmost crowns are not coupled to the graft material and thus free to interact with the delivery system. In order to prevent slippage of the graft material at the endmost crowns and secure the longitudinal position of the graft material, one of a pair of stoppers is coupled on each of the opposing struts between which the unattached endmost crown is formed. In an embodiment, the stoppers are cylindrical tubes of a radiopaque material having a longitudinally-extending slit in a wall thereof.

A lancet for acquiring a blood sample includes a unitary member which is hollow along at least a portion of its length. Preferably, the unitary member is in the form of a seamless cylindrical tube which is constructed out of a rigid and durable material, such as stainless steel. During the lancet manufacturing process, a series of individual grinding processes are performed on one end of the unitary member to yield a lancet which includes a plurality of skin-penetrable tips. In one embodiment, one end of the unitary member is subjected to a pair of single angle planar grinds to yield a lancet which includes a pair of sharpened tips. In another embodiment, one end of the unitary member is subjected to four compound angle planar grinds to yield a lancet which includes a pair of sharpened tips. In another embodiment, one end of the unitary member is subjected to three single angle planar grinds to yield a lancet which includes three equidistantly spaced sharpened tips.

The present invention concerns a cardiac valve prosthesis system (10; 40) for implantation into the body of a mammal. The prosthesis system (19; 40) comprises a valve (16) mounted on an stent element (18) to form a stented valve element (12), and an anchoring element (14) to be arranged within the aorta of the mammal to be treated with the prosthesis and spaced-apart form the stented valve element (12). Further, the anchoring element (14) comprises a cylindrical tube element composed of fabric (22) supported by a metal mesh, and the stented valve element (12) and the anchoring element (14) represent two constructional distinctive elements being associated by ligament-like connecting means (30; 50), such, that the connecting region (28) between the stented valve element (12) and the anchoring element (14) is generally free from foreign material.

The tissue augment sheet delivery system includes a tube funnel adapter and a tissue augment sheet delivery instrument. The tube funnel adapter includes a oval / conical shaped funnel. The tissue augment sheet delivery instrument includes a handle. A cylindrical tube is connected to the handle. A wire is inserted in the tube. The wire is formed in a large loop with small loops formed in the large loop. A tissue augment sheet is attached to one side of the large loop using a monofilament. In use, the tube funnel adapter is inserted in body. The tissue augment sheet is placed in mouth of the oval / conical shaped funnel and gently moved down. While moving down, the tissue augment sheet conforms to the internal diameter of the tube funnel adapter. The handle is withdrawn to remove the large loop from the body leaving the tissue augment sheet in body.

A low profile highly expandable stent includes a fabric cylindrical tube having a longitudinal axis wherein multiple serpentine shaped connecting pieces are affixed lengthwise to the fabric cylindrical tube along the longitudinal axis thereof. The multiple connecting pieces are circumferentially spaced from adjacent connecting pieces and a first and second end of each connecting piece has an aperture formed therein for allowing interconnection of the connecting pieces at the first and second end to the fabric cylindrical tube.

A robotized laparoscopic system capable of executing commands of an operating surgeon is provided. The laparoscopic system includes a cylindrical tube inserted into the opening. A small-sized camera is attached to one end of the tube to capture the images of the surgical site. A bending portion is adapted to bend the tip of the tube in any direction. A driving unit controls a bending direction and a bending angle of the bending portion. A movement device moves the tube forward or backward in a longitudinal direction. A control unit independently controls the driving unit and the movement device. An input unit receives commands from the surgeon. A conversion unit converts the command input from the surgeon into digital signals and transmits the digital signals to the control unit. A support unit supports weight of the movement device by being connected to an operating or the floor.

The present invention generally relates to a microendoscope assembly capable of intra-ductal use. The microendoscope generally comprises: an outer cylindrical guide tube defining an internal passageway having an exterior diameter of no greater than about 1.0 mm; a first internal cylindrical tube defining a working channel having an interior diameter of no less than about 0.5 mm; a second internal cylindrical tube defining a image guide and housing a lens; and an illumination bundle comprising optic fibers.

A sea surface antenna comprises a cylindrical tube of metallic material 13 on a dielectric former. The tube has a longitudinal slot shorted at each end and coupled at its midpoint to a coaxial feed. The slot is bridged by two groups of capacitances each group being distributed along a respective half of the slot. The length of the antenna is less than 0.25 λ and the diameter of the antenna is less than 0.02 λ, where λ is the free space wavelength at the operating frequency. The antenna is dimensioned so as to operate in an evanescent mode at a resonant frequency less than the cut-off frequency.

A self contained, hermetically sealed, cigarette shaped nicotine inhaler tube includes a cylindrical wall and formed closed ends. The two or more elements making up the tube are formed and sealed together after forming at a location between the closed ends, capturing a filler within. The filler is in the tube to carry nicotine. The closed ends are recessed from the end of the cylindrical tube and may be truncated conically shaped. The closed ends may be drawn further into the tube using heat and the pressure of a probe. A tool for piercing the ends of the tube includes a supportive cylindrical cavity slightly larger than the tube with a centric spike and a terminal surface in the cavity. The cylindrical wall of the tube is supported by the cavity and the truncated conical shape of the end wall to receive the spike for penetrating the end wall at each end. The terminal surface prevents excessive penetration of the spike.

A horticultural light apparatus that reduces heat transmitted to plants that are being illuminated is provided. The Inventive Device includes a hollow, transparent, cylindrical tube, preferably made of glass. The tube is open at both ends and adapted to receive spigot members, the spigot members also being open ended. A support bracket to mount a lightbulb is affixed to at least one of the spigots. A reflector is also installed on the interior of the tube. In use, a lightbulb is inserted into the tube and secured by the spigots. Because of the open ends, air can flow through the tube, thus eliminating over-heating of the lightbulb. The glass absorbs much of the radiant heat generated by the lightbulb while emitting substantially all of the light generated by the lightbulb. The reflector directs the light in a generally downward direction. Means for suspending the Device are also included.

The invention is directed toward a micro-endoscope assembly for the treatment of diseased tissue in breast ducts comprising a cylindrical guide tube with a distal end defining an internal cylindrical passageway, a first smaller cylindrical tube eccentrically formed in the cylindrical passageway of a smaller diameter than said tube internal cylindrical passageway to receive and guide an endoscope, the smaller cylindrical tube forming together with an inner wall surface of the cylindrical guide tube a second passageway. A light transmitting probe is mounted in the second passageway and is connected at the distal end of the guide tube with an energy transmitting device. The light probe is activated to generate light at a particular wavelength to cause the tissue to fluoresce and is again activated to generate light at a specific wavelength to necrose the diseased tissue.

A triple lip seal for reciprocating members, and especially for an inner cylindrical tube connected to a vehicle wheel and an off-road motorcycle or bicycle. The seal includes an oil side beam generally parallel to the axis of the reciprocating members and having at least two sealing lips for engaging the inner cylindrical tube and wherein the forces applied to the seal are balanced between the two lips to resist flattening of the sealing lips against the shaft and to enhance the service life of the seal. The seal also includes an air side beam having a third sealing lip engaging the inner cylindrical tube.

A fluid transfer system has a holder that is made of a cylindrical member having a closed end and an open end. The closed end has fitted thereto a luer and a cannula that extends into the interior of the holder. The holder has a distal portion that has a first cross section and a proximal portion that has a second cross section. The cross section of the distal portion is smaller than the cross section of the proximal portion. The distal and proximal portions are joined by a shoulder. The fluid transfer system also includes an adapter that is inserted to the holder from the open end of the holder. The adapter has a base having a central opening and a cylindrical tube that extends from the central opening. The diameter of the cylindrical tube is slightly smaller than the diameter of the distal portion and is configured to accept a first type of fluid collection store such as a vacuum tube. With the adapter removed, the holder can accept a differently dimensioned fluid collection store such as for example a blood culture collection bottle.

A very small diameter intravascular stent device which may be used to occlude or partially occlude an aneurysm in the human brain, the stent device includes a thin-walled skeletal cylindrical tube fonned of S-shaped, or sinusoidal, elements which, when compressed, nest tightly with each other.

A mixing element, which is produced at low cost, has high mixture agitation effectiveness, and is easily made large, and a static fluid mixer using the mixing element are provided. Further, a gas-liquid treatment apparatus with high treatment ability is provided. A mixing element 1 includes: a cylindrical passage tube 2 trough which fluid flows; a plurality of spiral rightward rotation type first blades 3 formed of a perforated object, which are provided in the passage tube 2; a first inner cylindrical tube 5 shaped like a cylinder and disposed inside the blades 3; a plurality of spiral rightward rotation type blades 6 provided in the inner cylindrical tube 5; and an opening 9 formed in the axial center portion of the blades 6. A static fluid mixer is formed by using at least one mixing, element 1 mentioned above.

The fishing rod of this invention includes a hollow cylindrical butt pipe, and a plurality of hollow cylindrical sections sequentially jointed together to form a telescopically retractable structure jointed to the butt pipe such that the sections are sequentially retracted into the butt pipe. A tip rod is mounted to the end of the outermost one of the sections remote from the butt pipe. A butt grip is fitted over the butt pipe, and consists of a hollow cylindrical tube opened at both ends thereof. A plurality of radial support ribs are formed on the inner surface of the tube while being directed in radial directions and spaced apart from each other at regular intervals. When the butt grip is fitted over the butt pipe, the external surface of the butt pipe is brought into close contact with the inside edges of the radial support ribs. The butt grip directly transmits vital vibrations of a fish taking a bait or caught by the hook to the hand of a user holding it, thus allowing the user to have a thrilling and agreeable feeling while fishing, and doubling a user's interest in fishing.

An assembly and process for fracturing, stimulating and producing a wellbore having a plurality of oil or gas producing zones is provided comprising introducing into the well the pumpable seat assembly comprising a generally cylindrical tube having an outer diameter and an inner diameter with an upper end forming a ball seat; setting the pumpable seat assembly below an oil or gas producing zone to be produced; introducing a dissolvable ball into the well, said dissolvable ball having a sufficiently large enough outer circumference so that it can sit on the ball seat and temporarily restrict a flow of fluids to the portion of the wellbore located below the pumpable seat assembly; and fracturing the oil and gas producing zone to stimulate oil or gas production; whereby the biodegradable ball is configured to dissolve within a predetermined period of time so that when it dissolves any oil or gas produced from zones below the pumpable seat assembly can flow through the cylindrical tube.

A core bit for abrasive cutting including a cylindrical tube (3) provided at its end surface with cutting or abrasive bodies (2) and a cover (4) provided at an opposite end surface of the cylindrical tube (3) and secured thereto and having, along its central axis (A), a shank (5) to be received in a rotary power tool, with the cover (4) being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of a concentric flexural oscillation, and the cylindrical tube (3) being dimensioned, with respect to a set excitation frequency, for forming a whole number of maximum amplitude oscillations of axial longitudinal oscillations.

A spiral-path chimney-effect heat sink cools an LED light bulb by increasing the length of the path over which heated air rises between two coaxial tubes. A tube top is attached to one end of the tubes. A light emitting diode (LED) is thermally coupled through the tube top to the inner tube. There are window openings below the rim where the outer tube attaches to the tube top. A convection current path guide is disposed between the inner and outer tubes. The convection current path guide is a spiral wire that causes rising air to follow a longer spiral path around the heated inner tube before the air exits the heat sink through the window openings. An Edison screw base is attached to the end of the inner tube opposite the end attached to the tube top. The coaxial tubes can be cylindrical tubes, conical tubes or square tubes.

A clear, hollow cylindrical tube having an internal circuit board with LED lights provides a lighting and flashing illumination device. The LED lights may either all be illuminated at once, or have certain LEDs with constant illumination while other LEDs may be placed into a flashing mode. The power source for the lighting and flashing apparatus includes either standard or rechargeable batteries and a 12-volt external source. The 12-volt external source may also be used to recharge the rechargeable batteries. The cylinder has an upper collar with both magnetic and hook hanging mechanisms. The rechargeable LED lighting and flashing apparatus provides much more illumination than a flashlight using standard charging and lighting electrical parts.

A fluid transfer system has a holder that is made of a cylindrical member having a closed end and an open end. The closed end has fitted thereto a luer and a cannula that extends into the interior of the holder. The holder has a distal portion that has a first cross section and a proximal portion that has a second cross section. The cross section of the distal portion is smaller than the cross section of the proximal portion. The distal and proximal portions are joined by a shoulder. The fluid transfer system also includes an adapter that is inserted to the holder from the open end of the holder. The adapter has a base having a central opening and a cylindrical tube that extends from the central opening. The diameter of the cylindrical tube is slightly smaller than the diameter of the distal portion and is configured to accept a first type of fluid collection store such as a vacuum tube. A non-continuous wall extends from the base of the adapter to surround the cylindrical tube. The cross section of the wall is slightly smaller than the diameter of the proximal portion. At each section of the non-continuous wall there is formed a protuberance. A groove is formed about the inner surface of the proximal portion. When the adapter is fully inserted to the holder, the protuberances would snap fit to the groove so that the adapter is prevented from being inadvertently removed from the holder. With the adapter removed, the holder can accept a differently dimensioned fluid collection store such as for example a blood culture collection bottle.

A method for manufacturing a device for fastening poles, posts, masts or the like in the ground and a fastening device with a basic body are described, it being possible, but not essential, for at least one part portion of the basic body to be provided with a screw-like or spiral-like thread, and the basic body essentially having a cone-shaped basic shape with at least one conical part portion. According to the method of the present invention, the basic body is hammered into the basic shape from an essentially cylindrical tube. The fastening device has a holding portion, and an anchoring portion designed in one piece which, if provided with a thread, has at least two part portions of different conicity. The holding portion and essentially the anchoring portion are hollow throughout.

An apparatus for the deposition of a variable thickness coating onto the inside of a cylindrical tube comprises a variable pressure gas, an cathode coaxially positioned within the cylinder, and a voltage source applied between the cathode and cylindrical tube, which functions as an anode. A radial plasma arc is generated between the anode and cathode at a starting point on the cylinder, and the plasma arc travels down the central axis of the cylinder, providing a helical deposition region on the inside of the cylinder. Selection of the combination of cathode material and gas enable the plasma to generate ionic material which is deposited on the anodic cylinder in the region of the plasma. By varying the pressure of variable pressure gas for each helical path, it is possible to vary the composition of this deposition film.

A user friendly, safe and efficient continuous flow irrigation endoscope having only a single housing sheath without an inner sheath. The exclusion of the inner sheath increases the effective lumen of the endoscope. A long hollow cylindrical tube, capable of performing a to and fro and rotary motion, is placed inside the housing sheath to function as an endoscopic instrument, but also to serve as a conduit for evacuating waste fluid and detached tissue pieces present inside a tissue cavity. A single inflow port located at the proximal end of the single housing sheath allows the irrigation fluid to enter the tissue cavity via the lumen of the said housing sheath. The invented endoscope system has a single inflow port, a single outflow port, without an inner sheath so that all waste fluid and tissue debris present inside cavity are evacuated via the same single outflow port. No type of feedback mechanism, such as mechanical or electrical feedback mechanism, is incorporated in the endoscope to facilitate the removal of detached tissue pieces or waste fluid.

A very small diameter intravascular stent device which may be used to occlude or partially occlude an aneurysm in the human brain which is comprised of a thin-walled skeletal cylindrical tube formed of S-shaped or sinusoidal elements which, when compressed, nest tightly with each other.