摘要:
An apparatus and method for determining an expanded diameter of a catheter balloon. An optical sensor includes an elongated optical fiber with at least one diffraction grating formed in a core of a distal portion thereof. The fiber distal portion is coupled to the inflatable balloon. Broadband light is transmitted to the diffraction grating by an optical interrogator. A portion of the light is reflected from the diffraction grating and is received by a wavelength detector. The wavelength of the reflected portion of light is dependent on the strain applied to the diffraction grating. The wavelength detector determines the strain in the balloon and correlates the strain to the diameter of the balloon.
摘要:
An apparatus and method for determining an expanded diameter of a catheter balloon. An optical sensor includes an elongated optical fiber with at least one diffraction grating formed in a core of a distal portion thereof. The fiber distal portion is coupled to the inflatable balloon. Broadband light is transmitted to the diffraction grating by an optical interrogator. A portion of the light is reflected from the diffraction grating and is received by a wavelength detector. The wavelength of the reflected portion of light is dependent on the strain applied to the diffraction grating. The wavelength detector determines the strain in the balloon and correlates the strain to the diameter of the balloon.
摘要:
A method of a forming a hollow, drug-eluting medical device includes utilizing a hollow wire having an outer member and a lumen of the outer member, and filling the lumen with a fluid to form a supported hollow wire. The supported hollow wire is shaped into a stent pattern. Openings are formed through the outer member. The supported hollow wire is processed to remove the fluid from the lumen of the outer member without adversely affecting the outer member, leaving the hollow wire shaped into a stent pattern. The lumen is filled with a biologically or pharmacologically active substance.
摘要:
A method of a forming a hollow, drug-eluting medical device includes utilizing a hollow wire having an outer member and a lumen of the outer member, and filling the lumen with a fluid to form a supported hollow wire. The supported hollow wire is shaped into a stent pattern. Openings are formed through the outer member. The supported hollow wire is processed to remove the fluid from the lumen of the outer member without adversely affecting the outer member, leaving the hollow wire shaped into a stent pattern. The lumen is filled with a biologically or pharmacologically active substance.
摘要:
Embodiments hereof relate to a catheter having a metal hypotube proximal shaft and a radio frequency identification (RFID) integrated circuit electrically connected to the metal hypotube such that the metal hypotube operates as an antenna for transmitting and receiving modulated RF signals between the RFID integrated circuit and an external receiver configured to read the electronic identification information carried by the RFID integrated circuit. The hypotube and RFID integrated circuit are embedded in a luer hub of the catheter. The RFID integrated circuit contains electronic identification information such as model/serial number, manufacturing information and other summary information for improving traceability of the catheter and removing paper work associated with product tracking.
摘要:
Embodiments hereof relate to a catheter having a metal hypotube proximal shaft and a radio frequency identification (RFID) integrated circuit electrically connected to the metal hypotube such that the metal hypotube operates as an antenna for transmitting and receiving modulated RF signals between the RFID integrated circuit and an external receiver configured to read the electronic identification information carried by the RFID integrated circuit. The hypotube and RFID integrated circuit are embedded in a luer hub of the catheter. The RFID integrated circuit contains electronic identification information such as model/serial number, manufacturing information and other summary information for improving traceability of the catheter and removing paper work associated with product tracking.
摘要:
A method of a forming a hollow, drug-eluting medical device includes utilizing a hollow wire having an outer member and a lumen of the outer member, and filling the lumen with a fluid to form a supported hollow wire. The supported hollow wire is shaped into a stent pattern. Openings are formed through the outer member. The supported hollow wire is processed to remove the fluid from the lumen of the outer member without adversely affecting the outer member, leaving the hollow wire shaped into a stent pattern. The lumen is filled with a biologically or pharmacologically active substance.
摘要:
Methods and apparatus for creating an artificial arteriovenous fistula between an artery and an adjacent vein are disclosed. Methods include utilizing a hollow spiral shunt that defines a fluid passageway between a proximal port and a distal port thereof. The spiral shunt is loaded within a delivery device that is transversely advanced through a wall of the artery. A piercing end of the spiral shunt is than exposed and the delivery device is rotated to pierce an opposing wall of the artery and a wall of the adjacent vein with the spiral shunt piercing end. Rotation of the delivery device corkscrews the spiral shunt through the walls of the artery and the vein in order to position the spiral shunt to fluidly connect the artery and vein. Once so positioned, the spiral shunt is released to be deployed between the artery and vein lumens thereby forming an artificial arteriovenous fistula therebetween.