1642results about How to "Small outer diameter" patented technology

A device for protecting cerebral vessels or brain tissue during treatment of a carotid vessel includes a catheter having a distal portion, a proximal portion and a lumen extending therebetween, the catheter including first and second expandable areas for vessel occlusion provided over the length of the catheter. The device further includes an elongate stretching member insertable longitudinally through the lumen of the catheter, the elongate stretching member being configured for stretching at least a portion of the catheter and causing the first and second expandable areas to transition from an expanded state to a collapsed state, and wherein the elongate stretching member is retracted proximally relative to the catheter causes the first and second expandable areas to transition from the collapsed state to a radially, or laterally expanded state.

An elongate tubular body extends between a rotatable cutter and a control. The cutter is connected to the control with a rotatable element. A vacuum is applied through an annular passage defined between the tubular body and the rotatable element. The tubular body has a sufficiently small outside diameter and sufficient kink resistance and pushability to navigate through arteries such as the internal carotid artery.

A surgical instrument for use with a robotic surgical system is described. The instrument includes an elongate shaft having a proximal end and a distal end. An electrically live wrist member is disposed at the distal end of the shaft. An electrocautery end effector is mounted to the wrist member. An interface is disposed at the proximal end of the shaft. The interface is removably connectable to the robotic surgical system. A conductor extends from the interface to the end effector so as to deliver electrical energy to tissue engaged by the end effector. A tip cover is disposed over the wrist member so that electrical current can only be conducted to tissues through the exposed end effector (e.g., to promote blood coagulation during usage) and not to other parts of the patient's body.

A puncture device with a flexible catheter tube for connecting to a medical infusion line, wherein the device includes a catheter connecting piece or hub attachable at the puncture site on the skin surface of a patient, wherein the catheter hub has a connector for connecting the infusion line and an outlet for the flexible catheter tube; and a needle holder having a puncture needle (stylet), wherein the flexible catheter tube is arranged in the interior of the catheter hub and extends out of the outlet with an output end. The end of the flexible catheter tube opposing the output end is located in the interior of the catheter hub in the area of the connector and is separated from the surrounding area by a septum, wherein the needle holder securely fastens the puncture needle insertable into a passage channel of the catheter tube at the end opposing the pointed or sharp puncture tip. The outlet is located at the bottom side of the catheter hub resting on the surface of the patient in the position of use and the puncture needle is made without a duct.

A factory-manufactured, preterminated fiber optic distribution cable having at least one predetermined access location for providing access to at least one preterminated optical fiber. A preterminated fiber optic distribution cable comprising at least one buffer tube comprising at least one optical fiber, a buffer tube transition piece operable for transitioning the at least one optical fiber from the at least one buffer tube into at least one protective tube, a C-shaped molded member defining a longitudinally extending optical fiber guide channel operable for storing a length of the at least one preterminated optical fiber and a protective means. A method of mid-span accessing at least one optical fiber from a fiber optic distribution cable. A buffer tube transition piece operable for transitioning a plurality of preterminated optical fibers from a buffer tube into protective tubing.

Occluding guidewires to access bodily lumen of a patient are disclosed. The occluding guidewires include a slotted tube and a balloon secured to a distal end of the slotted tube. The slotted tube includes a plurality of slots. The slots are in fluid communication with a lumen defined by the slotted tube. The balloon is secured about the slotted tube over one or more slots to permit inflation media to be communicated through one or more slots from the lumen into the inflation chamber of the balloon. The occluding guidewire may also include a proximal tube. A proximal lumen of the proximal tube is in communication with the lumen of the slotted tube. The occluding guidewire may be configured with a relatively small diameter using aspects of the present inventions.

The present invention is a stent delivery system that uses short section of guidewire fixedly attached to the distal section of a balloon angioplasty catheter onto which a stent is co-axially mounted. By not having a guidewire that slides through the balloon of the balloon angioplasty catheter, the deflated balloon on which the stent is mounted can have a reduced diameter. Therefore, the outer diameter of the pre-deployed stent mounted onto that balloon is also minimized. This provides a smaller profile, i.e., a smaller outer diameter, for the stent. The time to perform a stent delivery procedure is reduced; a separate guidewire does not have to be placed prior to using the stent delivery system to place the stent at the site of a stenosis. Another embodiment of the present invention has a core wire that extends for nearly the entire length of the stent delivery system, the guidewire having different levels of stiffness for different portions of the core wire's length.

A puncture device with a flexible catheter tube for connecting to a medical infusion line, wherein the device includes a catheter connecting piece or hub attachable at the puncture site on the skin surface of a patient, wherein the catheter hub has a connector for connecting the infusion line and an outlet for the flexible catheter tube; and a needle holder having a puncture needle (stylet), wherein the flexible catheter tube is arranged in the interior of the catheter hub and extends out of the outlet with an output end. The end of the flexible catheter tube opposing the output end is located in the interior of the catheter hub in the area of the connector and is separated from the surrounding area by a septum, wherein the needle holder securely fastens the puncture needle insertable into a passage channel of the catheter tube at the end opposing the pointed or sharp puncture tip. The outlet is located at the bottom side of the catheter hub resting on the surface of the patient in the position of use and the puncture needle is made without a duct.

A bifurcate stent delivery catheter is disclosed that includes a proximal shaft and two distal shaft branches having a bifurcated stent mounted thereon, wherein one or more conventional balloon catheters may be advanced within lumens of the bifurcate catheter to deploy the bifurcated stent. Since no balloons are mounted on the bifurcate catheter, the clinician may use any combination of balloon sizes for deploying various portions of the bifurcated stent and thus custom-select appropriate balloon sizes to best treat the bifurcation. Once a conventional balloon catheter is positioned within a distal shaft branch of the bifurcate stent delivery catheter, each of the distal shaft branches of the bifurcate catheter are constructed to split or otherwise expand in a controlled manner upon expansion of the balloon catheter in order to allow the bifurcated stent to be expanded or deployed.

There is provided an image pickup lens having a 6-element structure which has a small size and a sufficiently lens speed of F / 2 or less and in which various aberrations are corrected favorably. This image pickup lens includes a first lens having a positive refractive power and comprising a convex surface directed to the object side; a second lens having a negative refractive power and comprising a concave surface directed to the image side; a third lens having a positive or negative refractive power; a fourth lens having a positive refractive power; a fifth lens having a positive refractive power and comprising a convex surface directed to the image side; and a sixth lens having a negative refractive power and comprising a concave surface directed to the image side, in this order from the object side, wherein the image side surface of the sixth lens has an aspherical shape and an inflection point at a position other than an intersection point with the optical axis, and the image pickup lens satisfies the following conditional expressions.ν1>50ν2≦30where,ν1 is an Abbe number of the first lens, andν2 is an Abbe number of the second lens.

A device for protecting cerebral vessels or brain tissue during treatment of a carotid vessel includes a catheter having a distal portion, a proximal portion and a lumen extending therebetween, the catheter including first and second expandable areas provided over the length of the catheter. The device includes a first elongate member insertable longitudinally through the lumen of the catheter, the first elongate member being configured for stretching at least a portion of the catheter and causing one of the first and second expandable areas to transition from an expanded state to a collapsed state. The device further includes a second elongate member insertable longitudinally through the lumen of the catheter, the second elongate member being configured for stretching at least a portion of the catheter and causing the other of the first and second expandable areas to transition from an expanded state to a collapsed state.

A process for producing aligned carbon nanotube films, wherein a carbon compound is decomposed using a substrate that is coated with an element having no catalytic ability by itself and which loads a metallic element having catalytic ability or a compound thereof, thereby forming a film of fine carbon nanotubes on the surface of the substrate which are aligned in a direction perpendicular to the substrate.

Provided is a six-layer configuration image capture lens that is compact and has adequate light at F2 or less, and wherein all aberrations are effectually corrected. In order from the object side, the image capture lens is configured of a first lens having a positive refraction and with a convex face oriented toward the object side; a second lens having a negative refraction and with a concave face oriented toward the imaging side; a third lens having either a positive or a negative refraction; a fourth lens having a positive refraction; a fifth lens having a positive refraction and with a convex face oriented toward the imaging side; and a sixth lens having a negative refraction and with a concave face oriented toward the imaging side. The imaging side face of the sixth lens further comprises an aspherical face shape, has an inflection point in a location other than a point of intersection with the optical axis, and satisfies the following formulae: ? d1 > 50, and ? d2 = 30, wherein ? d1 is the Abbe's number of the first lens, and ? d2 is the Abbe's number of the second lens.

Methods and devices for treating defective heart valves are disclosed herein. In one exemplary embodiment, a transcatheter heart valve includes an expandable shape memory stent and a valve member supported by the stent. A plurality of micro-anchors can be disposed along an outer surface of the stent for engaging native tissue. The transcatheter heart valve can be configured to be advanced into a dilated valve annulus via a balloon catheter. The balloon can be inflated to expand the transcatheter heart valve from a collapsed diameter to an over-expanded diameter such that the micro-anchors engage tissue along the surrounding valve annulus. After engaging the tissue, the balloon can be deflated and the shape memory stent can retract or recoil toward its predetermined recoil diameter. As the stent recoils, the surrounding tissue is pulled inward by the stent such that the diameter of the valve annulus is reduced.

A valve arrangement for reciprocating machine, where the arrangement (1) comprises an in-valve (18) and an out-valve (19), each valve (18), (19) being a springloaded one-way valve designed to open for flow when the pressure differential in the direction of flow provides a force that exceeds the spring tension, wherein the valves (18, 19) are mounted in a casing (8) that forms or is connected to the cylinder head of the reciprocating engine (2). The in-valve (18) and the out-valve (19) are mounted in a sleeve (16) designed to be fitted in a bore (9) in the casing (8), and where fluid may flow to the sleeve (16) from an inlet (11) in the casing (8) and into the sleeve (16) via the in-valve (18), and where the sleeve (16) is provided with at least one perforated area where fluid may flow radially out of or into the sleeve (16) via holes (50, 51), thereby flowing to or from a passage (14, 15) that forms a perpendicular or near perpendicular connection with the bore (9).

An image pickup unit which consists of an objective optical system and a solid-state image pickup device: the objective optical system being composed of a first negative lens unit comprising a first meniscus lens element having a convex surface on the object side and negative power, a second positive lens unit comprising a convex lens element and an aperture stop disposed between the first lens unit and the second lens unit and this image pickup unit having a small outside diameter, allowing a field angle to be changed little due to variations of parts and an assembling variation, and having a maximum field angle of 150° or larger.

A system, apparatus and method for maximizing efficiency of tissue removal from body passageways is provided. The system comprises a device for opening an occluded lesion, e.g., a rotational atherectomy device or angioplasty device, and a guide wire having an introducer sheath. The guide wire introducer sheath may comprise a hypo tube having columnar strength greater than that of the guide wire alone to assist the guide wire in crossing occluded lesions, wherein the sheath and guide wire are axially moveable relative to each other. The guide wire sheath may further comprise increased flexibility at its distal end to increase flexibility and / or a soft distal tip to help with steerability through the vasculature. The sheath may allow for a smaller outer diameter guide wire which, in turn, may allow for a smaller outer diameter on the occlusion-opening device, e.g., atherectomy or angioplasty device, which is slid over the pre-positioned guide wire.

The multi-cyclone dust separating apparatus includes a first cyclone unit having a body and including an air inlet disposed at a side of the body, a first cyclone chamber adapted to form a first space for whirling air from the air inlet to separate dust form the air; a second cyclone unit adapted to be detachably disposed at the body of the first cyclone unit and including, a second air inlet to draw the air from the first cyclone chamber, at least one cyclone for whirling the air from the first cyclone chamber to provide a second separation of dust from the air; and a dust bin adapted to be detachably mounted to at least one of the second cyclone unit and the first cyclone unit.

A dual braided catheter shaft includes a flat wire forming the inner braid, thereby potentially allowing for reduced radial thickness of the shaft. In one embodiment, the shaft (100) includes an inner polymer jacket (104), an inner braid (106) formed on the inner jacket (104), an intermediate jacket (108) formed over the inner braid (106), an outer braid (110) formed on the intermediate jacket (108) and an outer jacket (112) formed on the outer braid (110). A preferred construction process involves extruding polymer material directly onto each of the inner and outer braids (106 and 110) so that little or no air gaps remain between the polymer material and the braids (106 and 110). The braiding parameters of the inner and outer braids (106 and 110) can be varied along the length of the catheter to provide varying mechanical properties.

A device for protecting cerebral vessels or brain tissue during treatment of a carotid vessel includes a catheter having a distal portion, a proximal portion and a lumen extending therebetween, the catheter including first and second expandable areas for vessel occlusion provided over the length of the catheter. The device further includes an elongate stretching member insertable longitudinally through the lumen of the catheter, the elongate stretching member being configured for stretching at least a portion of the catheter and causing the first and second expandable areas to transition from an expanded state to a collapsed state, and wherein the elongate stretching member is retracted proximally relative to the catheter causes the first and second expandable areas to transition from the collapsed state to a radially, or laterally expanded state.

A system, apparatus and method for maximizing efficiency of tissue removal from body passageways is provided. The system comprises a device for opening an occluded lesion, e.g., a rotational atherectomy device or angioplasty device, and a guide wire having an introducer sheath. The guide wire introducer sheath may comprise a hypo tube having columnar strength greater than that of the guide wire alone to assist the guide wire in crossing occluded lesions, wherein the sheath and guide wire are axially moveable relative to each other. The guide wire sheath may further comprise increased flexibility at its distal end to increase flexibility and / or a soft distal tip to help with steerability through the vasculature. The sheath may allow for a smaller outer diameter guide wire which, in turn, may allow for a smaller outer diameter on the occlusion-opening device, e.g., atherectomy or angioplasty device, which is slid over the pre-positioned guide wire.

An optical / electrical interconnect board includes a base material composing an electrical circuit; a plurality of light receiving / emitting units, each of the units being constituted by a light emitting element and a light receiving element packaged on the base material; and an optical fiber tape that connects the light emitting element to the light receiving element for each of the light receiving / emitting units, the optical fiber tape being formed by bringing together optical wires for the units in a side-by-side manner and coating with a first coating material.

Apparatus for treating abnormal mucosa in an alimentary tract are provided. The apparatus include an ablation structure configured to be removably coupled to an endoscope and a deflection mechanism adapted to move the ablation structure with respect to the endoscope and toward a tissue surface.

A factory-manufactured, preterminated fiber optic distribution cable having at least one predetermined access location for providing access to at least one preterminated optical fiber. A preterminated fiber optic distribution cable comprising at least one buffer tube comprising at least one optical fiber, a buffer tube transition piece operable for transitioning the at least one optical fiber from the at least one buffer tube into at least one protective tube, a C-shaped molded member defining a longitudinally extending optical fiber guide channel operable for storing a length of the at least one preterminated optical fiber and a protective means. A method of mid-span accessing at least one optical fiber from a fiber optic distribution cable. A buffer tube transition piece operable for transitioning a plurality of preterminated optical fibers from a buffer tube into protective tubing.

The invention relates a spring strut arrangement for wheel suspensions of motor vehicles, which is formed from a telescoping shock absorber, a suspension spring element which is preferably made as a helical compression spring, and a preloaded spring element which is preferably made as a helical compression spring, the spring elements being supported by way of spring caps on the body of the motor vehicle and on a wheel suspension element and a third spring cap located in between being movably guided along the longitudinal axis of the shock absorber relative to the body by way of an electrically driven positioning drive which is located within the spring elements, the positioning drive having a positioning spindle which is pivoted around the shock absorber and an adjusting nut which is connected to the movable spring cap. According to the invention, the shock absorber with the shock absorber tube is located at the top on the body of the motor vehicle and the positioning spindle is pivoted on the shock absorber tube.

An electric power steering device is configured to transmit an auxiliary torque to a steering unit of front wheels, and includes: an operator; an electric motor configured to generate the auxiliary torque in accordance with at least a steering torque generated by input from the operator; the steering unit of front wheels which includes a pinion shaft; and a rotation terminating mechanism which provides a motion terminating end of the operator, the rotation terminating mechanism being disposed between the operator and the pinion shaft.

The disclosure provides a system and method to safely and efficiently store and transport process tubes in a carrier tray comprising prior to and during amplification of nucleotides in the process tubes. The process tube disclosed includes a securement region having an annular ledge, a neck, and a protrusion. The securement region of the process tube can secure the process tube in a port of the carrier tray, but still allows the process tube to adjust or float in order to align the process tube into a rigid heater well of a thermal cycler.