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Integrated system for the ballistic and nonballistic infixion and retrieval of implants

Provided are methods and apparatus for the use of magnetic traction to maintain the patency of a tubular anatomical structure, whether a vessel, duct, the trachea, bronchus, bile duct, ureter, vas deferens, fallopian tube, or portions of the digestive tract, as to constitute means for extraluminal stenting. An extraluminal stent consists of a perimedial or medial intravascular and an extravascular component. The intravascular component consists of ferromagnetic spherules implanted aeroballistically or stays implanted by means of a special hand tool, while the extravascular component consists of a pliant jacket or mantle that has magnets mounted about its outer surface. A catheter adapted for use as the barrel of a gas-operated implant insertion gun is so devised that it can be used independently to perform an angioplasty and thereafter have its free or extracorporeal end inserted into the airgun to initiate implantation of the intravascular component without the need for withdrawal and reinsertion through the introducer sheath. When the implants must be spaced too closely together to be controlled by hand, a positional control system is used to effect discharge automatically. Spherules that consist entirely of medication or that have a radiation emitting seed as the core can be implanted with the same apparatus. A glossary of terms follows the specification.
Owner:GOLDSMITH DAVID S

Emulating a persistent connection using http

An apparatus, method and computer program product for emulating a persistent connection using http. According to one embodiment, the method includes receiving an empty get from a first client; receiving a get from a second client, the get containing data to be sent to the first client; and sending a response to the first client, in response to the empty get, the response containing the data. According to another embodiment, the method includes receiving, from a client, a get containing first data to be sent to an application server; sending the first data to the application server; sending an ack response to the client in response to the get; receiving a response from the application server, the response containing second data to be sent to the client; waiting for an empty get from the client; receiving an empty get from the client; and sending the second data to the client in response to the empty get. According to another embodiment, the method includes receiving, from a client, a get containing first data to be sent to an application server; sending the first data to the application server; sending an ack response to the client in response to the get; receiving an empty get from the client; receiving a response from the application server, the response containing second data to be sent to the client; and sending the second data to the client in response to the empty get.
Owner:CISCO TECH INC +1
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