摘要:
A syringe which has an intended pressure limit. The syringe includes a syringe body (12), and a pressure-limiting mechanism is disposed inside the syringe body. The pressure-limiting mechanism comprises a valve assembly (18) including a valve spool (66) which is spring biased in the syringe body. In one embodiment, the pressure-limiting mechanism is provided in the form of a valve seal (88) included in a valve piston (84) provided on the valve spool (66) which moves into sealing engagement with an internal wall (92) of a valve bore in the syringe housing once the intended pressure limit is reached. In another embodiment, the pressure-limiting mechanism is provided in the form of the valve mechanism (110) having a valve seat (138) on the distal end of a valve spool (114) which moves into sealing or plugged engagement with a valve plug (142) once the intended pressure limit is reached. Regardless of the exact configuration, preferably the syringe is simple, reliable, easy to assembly, and easy to sterilize given its low number of parts.
摘要:
A syringe body is disclosed, wherein the syringe body is configured to withstand pressures within a fluid reservoir of the syringe body of between about 0 atmospheres (atm) and about 81 atm and/or between about 0 atm and about 109 atm. The syringe body may be configured for use in connection with an inflation device. The syringe body may comprise one or more stiffening ribs and/or a stiffening lip. Methods of using the syringe body in connection with an inflation device are also disclosed.
摘要:
A guide member system includes a guide member, a light source, and a detector. The guide member comprises at least one illumination fiber. The at least one illumination fiber distally transmits the light projected by the light source from the proximal end of the guide member to the distal end of the guide member. The distal end of the guide member is projects the distally transmitted light. The distal end of the guide member receives light projected from the distal end of the guide member and reflected back toward the distal end of the guide member. The at least one illumination fiber proximally transmits the reflected light from the distal end of the guide member to the proximal end of the guide member. The proximal end of the guide member projects the proximally transmitted light toward the detector. The detector detects the proximally transmitted light.
摘要:
Inflation devices configured to communicate with remote displays are disclosed herein. Kits including such inflation devices with portable display devices are also disclosed herein. Methods of remotely displaying pressure data from a medical device are also disclosed herein. Devices, kits, and methods of connecting medical devices to remote displays and transferring information to or from linked computers are also disclosed.
摘要:
Some embodiments provide a soft tissue device, such as a transverse carpal ligament cutting device having one or more balloons that are deflated when the device is in an inactive position and are inflated when the device is in an active position. Other embodiments provide Other embodiments provide a soft tissue cutting method, such as a method of cutting a transverse carpal ligament that use a soft tissue cutting device.
摘要:
Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.
摘要:
Inflation devices configured to communicate with remote displays are disclosed herein. Kits including such inflation devices with portable display devices are also disclosed herein. Methods of remotely displaying pressure data from a medical device are also disclosed herein. Devices, kits, and methods of connecting medical devices to remote displays and transferring information to or from linked computers are also disclosed.
摘要:
A catheter includes: a tubular insertion section configured to inserted into a body; an expandable and contractible balloon that is disposed at a distal end portion of the insertion section to communicate with lumen of the insertion section; a knife wire that is disposed at the distal end portion of the insertion section and configured to treat a biological tissue; and an operation section that is disposed at a proximal end portion of the insertion section and configured to operate the balloon and the knife wire. The operation section includes a connecting portion that is fitted to a fluid discharge port of a pressurizer capable of supplying a fluid for causing the balloon to expand and a fixing tool which is configured to fix the operation section to the pressurizer to be detachable therefrom.