摘要:
In at least one embodiment, a stent comprises a plurality of serpentine bands and a plurality of connector struts. Adjacent serpentine bands are connected by at least one connector strut. Each serpentine band comprises a plurality of alternating straight band struts and turns. Each connector strut is connected at one end to a turn of one serpentine band and connected at the other end to a turn of another serpentine band. The turns of a serpentine band comprise connected turns that connect to a connector strut and unconnected turns that do not connect to a connector strut. At least one of the serpentine bands comprises a repeating pattern of three band struts and then five band struts extending between connected turns as the serpentine band is traversed.
摘要:
A roller assembly is provided. The roller assembly comprises a groove that includes two opposing surfaces. The roller assembly comprises either frictional surfaces positioned along the groove, or O-ring(s) coupled to the groove. The frictional surfaces may be a plurality of holes at spaced intervals along the opposing surfaces of the groove, a plurality of holes, each hole sized so as to extend into the two opposing surfaces, at spaced intervals along the opposing surfaces of the groove, or may be a bead-blasted surface or a knurled surface positioned along the opposing surfaces of the groove.
摘要:
A radially expandable stent comprising a plurality of spaced band-like elements and intersecting links is disclosed. The band-like elements have a generally serpentine configuration to provide continuous waves of generally sinusoidal character to each band-like element. The waves are characterized by a plurality of peaks and troughs taking a generally longitudinal direction along the cylinder such that the waves in the band-like elements open as the stent is expanded from a first diameter to a second diameter. The intersecting links are substantially U-shaped and terminate in first and second shanks. The first shank of a link emanates from a region between a peak and trough on a band-like element and the second shank of the link emanates from a region between a peak and trough on an adjacent band-like element.
摘要:
A case for holding writing utensils includes a body having an outer surface and a retaining surface. The outer surface of the body is configured for placement on a substantially horizontal surface. The retaining surface has at least one first recess configured to frictionally retain a portion of a writing utensil at a first angle with respect to the horizontal surface such that an end portion of the writing utensil obliquely extends from the retaining surface. The case may include at least one first channel and at least one second channel are defined within the inner surface along first and second gradients, respectively. The first gradient slopes upward from a front end of the first channel to a rear end of the first channel. The second gradient slopes downward from a front end of the second channel to a rear end of the second channel. The first and second channels are each configured to retain a portion of a writing utensil. Each first channel is positioned adjacent to at least one second channel such that the first and second channels form a non-interconnected crisscross pattern. The case may also include means for retaining a plurality of writing utensils coupled to the inner surface of the body. The means for retaining a plurality of writing utensils is configured such that the writing utensils alternatively extend from the inner surface in at least two separate directions.
摘要:
A method and apparatus for reducing the amount of control plane processing and flow detection required in a Multiprotocol Over ATM (MPOA) system are provided. According to one aspect of the present invention, flow detection processing may be altered based upon a packet's content. A first MPOA client (MPC) may include a plurality of flow detection mechanisms including standard MPOA processing and modified flow detection processing. For example, a flow may be determined to exist when the number of packets to a particular destination within a predetermined time interval exceeds a threshold value. Alternatively, a flow may be determined to exist immediately for certain types of traffic and detection of a flow may be suppressed for other types of traffic. Upon receipt at a first MPC, traffic may be classified based upon any information contained within a packet, including the header, the payload, or portions and/or combinations thereof. Based upon the packet's content, the MPC then selects among the plurality of flow detection mechanisms for purposes of determining whether or not a flow exists. According to another aspect of the present invention, control plane processing may be managed based upon a packet's content. A first MPC determines whether or not a stream of data with which a packet is associated justifies establishing a shortcut between the first MPC and the MPC with which the target is associated. After determining that the shortcut is justified, the first MPC allows or disallows the transmission of a resolution request based upon the packet's content.
摘要:
A novel intravascular device for removing vascular occlusion material comprises an elongate tube intravascularly insertable into a patient including a vascular occlusion removal element and a vascular lumen interior surface scouring element. The removal element comprises inner and outer respectively rotatable cutters which may be helical tubular cutters or cutting windows. The cutting windows may include cutting edges defining a substantially rectangular, arcuate or V-shaped configuration. The scouring element may be a flexible wire or a dilating member engageable with an interior surface of a vascular lumen. The scouring element may include a web member for collecting and funneling scoured material. A novel method for removing vascular occlusion material from a vascular lumen having an interior surface is also provided. The method comprises the steps of: providing an intravascular device having vascular occlusion removal means and vascular lumen scouring means; inserting the device intravascularly into a patient; positioning the device adjacent vascular occlusion material within the vascular lumen; energizing the removal means for removing vascular occlusion material from the vascular lumen; and energizing the scouring means for scouring the interior surface of the vascular lumen.
摘要:
Epitaxial lift off systems and methods are presented. In one embodiment a tape is disposed on the opposite side of the epitaxial material than the substrate is used to hold the epitaxial material during the etching and removal steps of the ELO process. In various embodiments, the apparatus for removing the ELO film from the substrates without damaging the ELO film may include an etchant reservoir, substrate handling and tape handling mechanisms, including mechanisms to manipulate (e.g., cause tension, peel, widen the etch gap, etc.) the lift off component during the lift off process.
摘要:
A method and apparatus of providing a teleforum. The method includes generating simultaneous outbound invitation calls to multiple invitees and transmitting a message to each invitee, inviting him or her to become a teleforum participant. Teleforum participants who accept the invitation are connected to the teleforum in a listen-only mode. During the teleforum, a teleforum participant may request active participation in the teleforum. The method also includes allowing the participant to actively participate in the teleforum. Active participation may include but is not limited to such activities as: speaking to the teleforum, asking a question, responding to a poll, making a donation, providing information, leaving a message, being transferred to a subconference, receiving feedback from participants, leaving a voicemail, volunteering for future activities or receiving media transmitted outside of the teleforum.