429 results about "Sharp point" patented technology

An ultrasonic surgical blade includes a body having an external surface, at least one cutting edge, and a distal end. In at least one embodiment, the cutting edge can be defined by first and second surfaces which define an angle therebetween. In various embodiments, at least a portion of the cutting edge comprises a sharp point. In other embodiments, at least a portion of the cutting edge and surface comprise a sharp point and or a beveled surface.

A suturing device for use with a delivery catheter in a transcatheter procedure, for closing an opening formed in the body. The suturing device comprises: a spiral needle having a central core, a proximal end, and a distal end. The distal end terminates in a sharp point for cutting a spiral passageway through body tissue surrounding the opening that is to be closed. The device also includes a guide wire having a suture eye at one end thereof for receiving suture thread after the guide wire has been advanced through the hollow central core of the spiral needle. The device further includes driving means, for allowing advancing and retracting of the spiral needle and guide wire with respect to the catheter, and for allowing connecting between the suture thread and the suture eye of the guide wire. The present invention also relates to a method for closing an opening formed in the body using a transcatheter procedure.

A dispensing capsule has a diaphragm button, stake and frangible membrane for a system for selectively dispersing the contents of a cup into an attached bottle. A frangible membraned cup has a diaphragm button operably attached to a stake with the stake's sharp point at one end and the diaphragm button on the opposing end. A cavity is disposed in the cup for consumable product defined by side walls and a base plate. Preloaded ingredients contained within the hermetically sealed cup are discharged from the dispensing capsule into a bottle by simply depressing a button disposed on the diaphragm of the cup, thereby actuating the stake to thrust forward and apply concentrated pressure abaxially to the frangible membrane. This concentrated pressure pierces substantially the center of the frangible membrane, causing it to rupture and progressively opening it. The diaphragm button locks in this downward position, holding the stake into the opened frangible membrane to maintain the opening, permitting the contents to flow through the frangible membrane and exit the cavity of the cup.

A microfracture instrument for applying microfracture therapy to a bone, the microfracture instrument comprising:an elongated shaft comprising a distal end and a proximal end;a needle comprising a body terminating in at least one sharp point, the needle being movably mounted to the distal end of the shaft for movement between an extended position for engaging the bone with the at least one sharp point of the needle and a retracted position for withdrawing the at least one sharp point of the needle from the bone; anda drive shaft movably mounted to the elongated shaft, the drive shaft being connected to the body of the needle so that movement of the drive shaft relative to the elongated shaft moves the needle between its extended position and its retracted position.

A method and semiconductor structure that uses a field enhanced region where the oxide thickness is substantially reduced, thereby allowing antifuse programming at burn-in voltages which do not damage the standard CMOS logic. The semiconductor device comprises a substrate that has a raised protrusion terminating at a substantially sharp point, an insulator layer over the raised protrusion sufficiently thin to be breached by a breakdown voltage applied to the sharp point, a region comprised of a material on the insulator over the raised protrusion for becoming electrically coupled to the substrate after the insulator layer is breached by the breakdown voltage, and a contact for supplying the breakdown voltage to the substrate. In a second embodiment, the semiconductor device comprises a substrate having a trough formed in a top surface of the substrate, a relatively thick insulator layer over the top surface of the substrate, a relatively thin insulator layer over the trough that is breached by a breakdown voltage applied to the trough, a region comprised of a material on the relatively thin insulator layer over the trough for becoming electrically coupled to the substrate after the relatively thin insulator layer is breached by the breakdown voltage, and a contact for supplying the breakdown voltage to said substrate.

The skin preparation device and sensor of the present invention include an array of rigid tines. The tines serve to “self-prepare” the skin at each electrode site. These tines, when pressed against the skin, penetrate the stratum corneum, thereby reducing skin impedance and improving signal quality. A self-prepping device of the present invention is an optimized array of short non-conductive rigid tines in which the individual tines are created in a geometry that allows for a sharp point at the tip when molding, machining or etching is used as a method of fabrication. This non-conductive array with rigid penetrating structures may, therefore, be used in combination with a conductive medium, preferably an ionic conductive gel. In penetrating the stratum corneum, micro-conduits are created in the layers of the skin enabling the conductive medium to reach the low impedance layers and to transmit bioelectrical signals from the skin to the electrode surface. Such a self-prepping device can be readily mass produced using molding methods or possibly other manufacturing methods, thereby providing for a low cost means of achieving improved performance of the biopotential sensor. Additionally this invention includes the integration of this self-prepping device into a biopotential sensor comprising an array of one or more electrodes.

A molded tooth design of generally pyramidal form made of various hard grit materials for use on a grinding wheel for grinding non-metal materials. The tooth structure generally includes a raked face having a neutral to positive rake angle that terminates to a sharp point. The tooth structure also includes on the raked face edge portions below the point extending from both sides thereof having a predetermined clearance angle to increase penetration and reduce friction of the tooth during the grinding process. The tooth structure may also include at a top end of the rake face a truncated clearance surface which will produce a wider cutting edge that is flat, for use in attacking the work surface of the work piece being ground. The rake face of the tooth generally may also be formed to have positive rake in the truncated surface.

A needle disclosed herein may include an elongate body extending between a proximal end and a distal end with a central longitudinal axis defined by the body, where the distal end includes a single sharp point along the central longitudinal axis and defining a distal end terminus three longitudinal fluted surfaces converging at the distal end terminus; and three longitudinal beveled cutting edges defining borders between the fluted surfaces and converging at the distal end terminus. Needle embodiments may include one or more ports open into and / or proximal of the fluted surfaces and communicating with one or more longitudinal needle lumens.

A mechanical broadhead for attachment to an arrow having a broadhead body including a plurality of blade windows formed therein, a geometrically angled retractable blade attached within each of the blade windows, retaining springs for retaining the blades in a retracted position during flight, a front body slidably mounted onto the broadhead body, and a front tip secured to the front body. Upon contact with a target, the front tip and front body slide rearwardly into an end of the geometrically angled blades, thus pushing each of the blades through the blade windows into a deployed position. The blades of the broadhead are reset by inserting a sharp point underneath an end portion of the retaining springs and applying a slight twisting motion allowing the blades to retract back into the broadhead body into a loaded position.

Protection for the otherwise exposed sharp point of a needle of an injection device. A two part cover for the needle comprises a stationary base which engages the injection device, and a relatively movable cover. The cover is guided to slide longitudinally along the base by a groove-and-projection system. The projection is held in an initial position, and slides along the groove during injection. At the end of the injection, the projection is immobilized in the groove at a final position, and immobilizes the moveable cover in a deployed position covering the needle.

An indwelling needle assembly has an inner needle having a sharp point at its tip, an inner needle hub fixed to the base end of the inner needle, a hollow outer needle in which the inner needle is inserted, and a seal section provided in the outer needle hub. In the indwelling needle assembly, the seal section has open / close means having a seal section body with a hole into which the inner needle is insertable, a shutter member for opening and closing the hole, and an urging member for urging the shutter member in the direction to close the hole.

A dispensing capsule has a diaphragm button, stake and frangible membrane for a system for selectively dispersing the contents of a cup into an attached bottle. A frangible membraned cup has a diaphragm button operably attached to a stake with the stake's sharp point at one end and the diaphragm button on the opposing end. A cavity is disposed in the cup for consumable product defined by side walls and a base plate. Preloaded ingredients contained within the hermetically sealed cup are discharged from the dispensing capsule into a bottle by simply depressing a button disposed on the diaphragm of the cup, thereby actuating the stake to thrust forward and apply concentrated pressure abaxially to the frangible membrane. This concentrated pressure pierces substantially the center of the frangible membrane, causing it to rupture and progressively opening it. The diaphragm button locks in this downward position, holding the stake into the opened frangible membrane to maintain the opening, permitting the contents to flow through the frangible membrane and exit the cavity of the cup.

Safety catheter introducer 135 (see FIG. 13) comprises catheter 131, needle 136, a safety means including needle protector 138 and actuated by trigger 149, as well as catheter cap 150. The latter is initially detachably retained on hexagonal shank 153 of protector 138 by moderate friction forces, and male luer member 145 is protected from contact with personnel by cap lateral wall 147. After the catheter emplacement, needle withdrawal and needle sharp point protection, operator turns protector 138 through 180 degrees and fixes cap 150 on catheter 131 by thread 152 using protector 138 as a cap holder. In doing so, male luer member 145 occludes the catheter entrance. Thereafter, operator easily detaches the protector from the cap. As a result, catheter 131 remains in patient's vein being closed with cap 150.

The invention relates to the technical field of computer vision and discloses a measuring method and a measuring device for the height of a human body based on a binocular vision technique. According to the measuring method and the measuring device disclosed by the invention, the height of a human body target is measured by acquiring image coordinates of a human head sharp point of the human body target in a scene image shot by a binocular camera and depth information corresponding to the image coordinates and calculating world coordinates of the human head sharp point under a coordinate system of the camera. According to the measuring method and the measuring device, the requirement on the compatibility of a measured person is low, and the height measurement can be finished by a mode that the person stands within the measurable range for shooting by the camera; the body heights of multiple persons in the scene can be simultaneously measured; in addition, the measurement precision is higher.

A mechanical broadhead for attachment to an arrow having a broadhead body including a plurality of blade windows formed therein, a geometrically angled retractable blade attached within each of the blade windows, retaining springs for retaining the blades in a retracted position during flight, a front body slidably mounted onto the broadhead body, and a front tip secured to the front body. Upon contact with a target, the front tip and front body slide rearwardly into an end of the geometrically angled blades, thus pushing each of the blades through the blade windows into a deployed position. The blades of the broadhead are reset by inserting a sharp point underneath an end portion of the retaining springs and applying a slight twisting motion allowing the blades to retract back into the broadhead body into a loaded position.

The invention discloses an internal waverider-derived turbine base combined dynamic gas inlet adopting a binary variable-geometry manner. The internal waverider-derived turbine base combined dynamic gas inlet structurally comprises a gas inlet internal waverider compression section 1, a throat section 2, an expansion and distribution section 3, a punching channel 4, a turbine channel 5, a fixed-geometry three-dimensional internal waverider compression representing section 6, an adjustable internal waverider compression representing section 7, an adjustable internal waverider compression section representing variable-geometry compression surface 8, an adjustable expansion representing section 9, a sharp point-free distribution representing section 10, a machine body proximity representing movable upper arm 11, a movable upper arm driving representing servo action cylinder 12, a distribution representing plate 13, an internal waverider-derived fixed-geometry representing profile 14 and a distribution representing cross section 15. The internal waverider-derived turbine base combined dynamic gas inlet has the advantages of small outer resistance, high flow coefficient, good airflow quality and the like; meanwhile, profile deformation and distribution plate deflection caused by compression in a three-dimensional internal waverider manner can be controlled by only two regulating parameters, the deformation is convenient and reliable, and the requirement on an acting servo device is relatively easily met.

A compression ring includes an outer surface opposing an inner surface, with teeth extending radially inwardly from the inner surface. First and second circumferential ends are complementarily interfittable, and are separated by a circumferential gap, allowing the compression ring to be compressable when being installed in a connector assembly. First and second axial ends of the compression ring are chamfered to facilitate compression. The teeth extend circumferentially from the first and second circumferential ends and are complementary to conduit threading. Each tooth includes first and second sides, with the first side perpendicular to the inner surface to resist pullout of a conduit from the connector assembly. The teeth terminate in sharp points for better gripping of unthreaded conduits. A compressed compression ring accommodates threaded conduits by complementarily mating with threading, and unthreaded conduits by biting into their outer surfaces. Internal and external sealing gaskets provide seals from moisture.

A method and system for compressing and displaying a digital ink trace. Raw ink data is smoothed, and sharp points of the smoothed line are found. Curve-fitting is then used to generate a mathematical expression that defines the line segments between adjacent sharp points. The ink trace then is represented by a backbone spline that includes the sharp points and the mathematical expressions for the line segments. Thickness information, such as pressure or acceleration information, is combined with the backbone spline to provide a compressed ink file that represents a contour curve of the original ink trace. A display module uses an algorithm to separate the contour curve into a sequence of straight lines. A set of pixels is then generated for the display of each straight line using a novel antialiasing method. The pixels at the ends of adjacent straight lines are aligned using a weighting algorithm.

A method and system for compressing and displaying a digital ink trace. Raw ink data is smoothed, and sharp points of the smoothed line are found. Curve-fitting is then used to generate a mathematical expression that defines the line segments between adjacent sharp points. The ink trace then is represented by a backbone spline that includes the sharp points and the mathematical expressions for the line segments. Thickness information, such as pressure or acceleration information, is combined with the backbone spline to provide a compressed ink file that represents a contour curve of the original ink trace. A display module uses an algorithm to separate the contour curve into a sequence of straight lines. A set of pixels is then generated for the display of each straight line using a novel antialiasing method. The pixels at the ends of adjacent straight lines are aligned using a weighting algorithm.

A bow and arrow stand, engaging the ground and holding an archery bow in an erect and upright position without contact with the bow string includes a vertical support shaft with an angular middle portion, an upper vertical portion and a lower vertical portion with a ground end tapering into a sharp point which is inserted into the ground, two padded horizontal members attached to the angular middle portion, an arrow quiver suspended from the lower vertical portion, a secondary ground engaging spike with a horizontal arm attached to the lower vertical portion, and a magnetic accessory bowl attached to the upper vertical portion to hold archery tools and accessories.

A wire containment cap includes a first side having a plurality of retainers for retaining wires, and a second side opposite the first side. Two sidewalls extend between the first side and the second side, and a support rib extends between the two sidewalls. The support rib includes two pair separators for separating wire pairs. In one embodiment, a plurality of sloped pair splitters is located between two of the retainers and includes a sharp point for cutting through insulation material on a pair of bonded wires. A communication jack assembly including a front portion and the wire containment cap is also described.

Apparatus and methods for precisely locating and marking where to fasten an object, such as a plaque or photograph, on a surface, such as a wall are described. The apparatus comprises a fastening means, a main body, the main body having a first surface contacting the fastening means, and a second surface, an indicator, the indicator having a shaft extending from the second surface of the main body and ending in a distal end comprising a means for marking, and a compressible material encapsulating the indicator. The marking means may be a sharp point of metal or plastic, and may include a marking composition, such as ink, chalk, glue, and the like. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.

A hydrodynamic suturing instrument, comprising an elongated cannulated suturing needle having a distal end configured to carry a suture through tissue and a proximal end adapted to connect to a syringe barrel and a lumen extending form said proximal end to an opening at the distal end for having a size for the passage of a suture, the opening at the distal end configured to receive a suture extending from the lumen along an outer surface of the needle wherein a sharp point extends forward of the suture. A companion instrument includes forceps having a distal end with jaws and a proximal end with a cannula extending from the proximal end to the distal end for passage of the needle, and the jaws having an opening enabling passage of the needle through tissue grasped in the jaws.

Provided is an industrially excellent surface-treated copper foil which satisfies requirements for adhesiveness to an insulating resin such as polyimide, heat-resistant adhesiveness, chemical resistance and soft etching properties. Also provided is a method for producing a surface-treated copper foil which achieves a high adhesion strength between an insulating resin and the copper foil, shows high chemical resistance in circuit formation and sustains good soft etching properties after forming vias by laser-processing. A base copper foil is subjected to a roughening treatment to give a surface roughness (Rz) of 1.1 μm or below. On the roughened surface, an Ni—Zn alloy layer is formed. The aforesaid roughening treatment is conducted in such a manner that the roughened surface comprises sharp-pointed convexes, which have a width of 0.3-0.8 μm, a height of 0.6-1.8 μm and an aspect ratio of 1.2-3.5, and the surface roughness (Rz) of said base copper foil is increased by 0.05-0.3 μm. The aforesaid Ni—Zn alloy layer has a Zn content of 6-30 wt % and a Zn deposition amount of 0.08 mg / dm2 or more.

A hand-operable and portable pencil sharpener which is comprised of a housing having a conical cavity therein. The cavity is of circular cross-section and defines an open inlet end tapering to a narrow inner end. A collar is provided about the open inlet end and formed integral with the housing. A pencil centering insert is rotatably secured in the collar by a flexible and removable snap ring. A slot is provided along the side wall of the conical cavity and a blade having a,sharp edge is secured adjacent to the slot with the sharp edge projecting slightly into the cavity whereby to shave a portion of the wood and lead on the extremity of a carpenter's pencil rotated in the conical cavity and centered by a centering slot in the pencil centering insert. An abrading element is secured to the housing to permit the abrading of a sharp point on the end of the lead.

The invention discloses a cycloid and spiral composite milling method for a web with slot features. The cycloid and spiral composite milling method is characterized by comprising the following steps: firstly, feeding a tool in a spiral manner; secondly, slotting by adopting cycloid to reduce cutting force of a first tool; thirdly, machining layer by layer by adopting a spiral machining tool path and transiting by adopting variable spiral at a corner, so that the curvature changes continuously, and the cutting force mutation caused by the mutation of a sharp point and a machining direction in the tool path is avoided, the stability of a tool load is guaranteed, and the vibration of the tool is reduced; and finally, machining by adopting a corner loop milling tool path at the corner. The cycloid and spiral composite milling method can be used for machining a material which is difficult to machine; the cutting force of the first tool is reduced by cycloid slotting; the variable spiral curve is adopted at the corner of the tool path; the mutation of the sharp point and the machining direction is avoided, so that the tool path is smooth; the cutting force is reduced; the machining quality of the surface of a workpiece is improved.

A wearable lightweight fire fighter's personal escape system and method includes a rope, having a distal and proximal end, organized in parallel segments disposed in an inner pouch. The inner pouch is entirely contained in an outer pouch that is appointed to be removably attached to a belt or harness, worn by a fire fighter. The proximal end of the rope exits through an opening in the inner pouch and outer pouch and is attached directly to a lightweight hook, or optionally enters a belay device. The hook has a sharp point for creating a purchase point on soft surfaces, a hook opening having sufficient diameter to surround radiators, steam pipe and the like, and capture rope that surrounds substantial objects. The hook has a central opening appointed for holding a firefighting tool to aid in creating a substantial object. The fire fighter escapes by creating a purchase point and repelling at a high speed or at a controlled speed by adjusting belay friction.

A landscape utility knife assembly discloses a single tool that can puncture the middle of a landscape liner and make the incisions necessary to place plants in the middle region of a landscape or garden area. The knife assembly consists of a replaceable blade and housing. The housing is composed of three regions: a handle region, a blade region, and a penetration region. These regions, which compose the housing, are arranged geometrically to form an acute angle. The tip of the penetration region forms a sharp point that can puncture a landscape liner. The penetration region is adjacent to the blade region and serves also to guide the liner into the replaceable blade that is exposed and recessed at the vertex of the angle formed by the housing.

Apparatus and methods for precisely locating and marking where to fasten an object, such as a plaque or photograph, on a surface, such as a wall are described. The apparatus comprises a fastening means, a main body, the main body having a first surface contacting the fastening means, and a second surface, an indicator, the indicator having a shaft extending from the second surface of the main body and ending in a distal end comprising a means for marking, and a compressible material encapsulating the indicator. The marking means may be a sharp point of metal or plastic, and may include a marking composition, such as ink, chalk, glue, and the like. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims.