14 results about "Tip catheter" patented technology

Catheter placement systems for split tip catheters can include a first guidewire, a second guidewire and a link slidably engaged with each. As the first guidewire is a withdrawn proximally, a stopping feature urges the link towards the split tip feature, transitioning the split tip feature from a Y-shape to a placement configuration, extending parallel to the axis of the catheter. Embodiments include a rod engaged with a first guidewire and a sheath extending proximally to retain the split tip feature in a placement configuration. The rod and sheath can then be withdrawn proximally through the first lumen to disengage the catheter. Embodiments include a magnetic element configured to secure a distal tip of a first guidewire with a distal tip of a second guidewire to retain the split tip feature in a placement configuration.

A catheter includes a hollow catheter shaft, and a distal tip connected to a distal end portion of the catheter shaft. A recess is formed in the distal end portion of the catheter shaft, and a proximal end portion of the distal tip is inserted into the recess. According to this catheter, joint strength of the distal tip and the catheter shaft can be enhanced.

A catheter tip may be a fabricated as a planar flexible circuit, e.g., via lithography, as having a first planar segment and a second planar segment that includes various electrodes on different sectors that are insulated from each other. The tip may be deformed to have a non-planar configuration, e.g., cylindrical, and then assembled onto a catheter. The catheter may be used to monitor ECG signals and temperature and to precisely deliver ablative energy to tissues via the various electrodes. ECG signals and temperature may be monitored for one sector while ablation energy is being delivered to another sector.

The invention relates to a wetting mechanism 20 for wetting a tube 12 of a catheter 10. The wetting mechanism 20 includes a housing 16 to be positioned at or proximal to the tip end 13 of the catheter tube 12, where the housing 16 comprises a holding chamber 22 and a wetting chamber 23. The wetting mechanism 20 comprises a fluid release control component 26 for controlling release of fluid within the holding chamber 22 into the wetting chamber 23. At least a portion of the catheter tube 12 is then able to be introduced and be moved through the wetting chamber 23 to wet the catheter tube 12, in use.

A movable bougie tip device includes a tip section having a tip, a holder, and a recoiled wire and a bougie section having a bougie, a silk thread, and a slide button located at a first end thereof. The slide button adjusts an angle of the tip relative to the bougie. The silk thread is disposed within a body of the bougie and extends through an outer surface of the tip from the body of the bougie through an opening and protrudes out the tip. The holder holds the silk thread at a distal end of the tip section. The tip bends at an angle ranging from 30° to 90° relative to the bougie, and the recoiled wire prevents kinking of the tip.

A catheter assembly comprises a catheter (18), a needle (12) having a sharp distal tip disposed within the catheter (18), a catheter hub (14) connected to the catheter (18) having the needle (12) passing therethrough, the catheter hub (14) including a valve (38) that selectively permits or blocks a flow of fluid through the catheter (18), a valve actuator (54) that moves between a first position and a second position, and a return member (56) that returns the valve actuator (54) from the second position to the first position, and a needle protection member (176) that encloses the sharp distal tip of the needle (12).

To provide a catheter that allows the tip of a sheath tube to be easily checked under radioscopy.SOLUTION: A catheter 10 (antegrade catheter 18) can advance along a blood vessel of a living body and includes a tubular first catheter body 24 having a first lumen 22, and a marker 26 having a radiopaque material arranged at the tip 24a of the first catheter body. The marker includes a stripe part 32a parallel to an extending direction of the first lumen.SELECTED DRAWING: Figure 2

A catheter (1) comprises a jacket (20, 33) and defining a lumen, and extends distally towards a tip (30, 31). The catheter has a helical support (20) within the jacket for at least some of the length of the jacket. The catheter distal end has a plurality of portions of different configurations for different bending and / or pushability characteristics. These may be according to different helical supports and the manner in which they are interwoven, and / or different liners with lap joints. There may be a hydrophilic coating.

A steerable catheter driven by a robotic controller comprises: a catheter body having a catheter tip and tool channel which spans from a proximal end of the catheter body and through the catheter tip along a catheter axis. The catheter tip includes a ramp-like surface formed inside part of the tool channel diameter. The ramp-like surface is an inclined flat surface formed at an angle with respect to a plane parallel to the catheter axis, such that the angle increases as the ramp-like surface spans from distal end towards the proximal end of the catheter tip. A housing mechanism permanently attached to an imaging device is configured to lock the imaging device to the ramp-like surface so as to prevent rotation of the imaging device with respect to the tool channel and / or prevent twisting of the catheter tip with respect to the imaging device.

A catheter device and drive system configured to navigate a catheter through complex, narrow tissue openings, such as lung bronchial tract openings of 3 mm or less. The device includes a proximal catheter portion housing a hollow torque shaft, and a tip catheter portion connected to the proximal portion connected to this torque shaft. The tip position of the catheter is controlled by at least one control cable / tension cable arrangement. The system uses a processor-controlled actuator that acts as a control cable while simultaneously rotating the torque shaft and at least one control cable / tension cable in a 1:1 relationship. The catheter tip is formed by a tool plate, which is equipped with various sensors and other devices and can be connected to the outside via other conduits.

The invention discloses a one-time forming multi-cavity rubber head guide pipe pressing die which comprises an upper die, a lower die and a rubber head guide pipe, the upper die and the lower die are matched to form a plurality of cavities, the rubber head guide pipe comprises a silica gel pipe body and a cavity head, and the silica gel pipe body is provided with a plurality of cavities communicated with the cavity head. A rubber head catheter, a urinary catheterization cavity core rod, a center cavity core rod assembly and a balloon cavity core rod are contained in the cavities respectively, the tail ends of the urinary catheterization cavity core rod, the tail end of the center cavity core rod assembly and the tail end of the balloon cavity core rod are inserted into the cavity channels respectively, and the center cavity core rod assembly comprises a center cavity core rod and a center cavity outer sleeve arranged on the center cavity core rod in a sleeving mode. A plurality of bending grooves are formed in the center cavity outer sleeve, a plurality of core needle holes are axially distributed in the circumference of the center cavity outer sleeve, and water inlet and outlet cavity core needles are arranged in the core needle holes. The problem that the multi-cavity rubber head catheter is difficult to form is solved.

A catheter having a head with a head orifice and a head channel connected to the head orifice, a primary lumen wall that defines an internal primary lumen volume, an adjustable neck that connects the head channel to the internal primary lumen volume, an adjustment system partially enclosed in the primary lumen wall that provides an articulation of the adjustable neck between an extended position to a contracted positon, wherein the articulation from the extended position to the contracted position provides a flexible tip catheter while the articulation from the contracted position to the extended position provides an ability to angulate toward a target.

A method of delivering radio-frequency (RF) ablation includes providing a split-tip catheter having a plurality of electrodes and selectively activating one or more of the plurality of electrodes. The method further includes delivering an RF current to activated electrodes and modifying a catheter current delivered to the plurality of electrodes of the split-tip catheter based on a number of activated electrodes.