| 摘要 |
A method and system for delivering a medicinal agent, such as a therapeutic drug or diagnostic agent, to a treatment site within a limb of a patient. An infusion catheter is inserted into a blood vessel and advanced to the treatment site. To prevent blood flow through the treatment site from carrying away the medicinal agent, the blood flow in the limb is stopped by applying external pressure with a constriction device, such as a pressure cuff coupled to an inflation pump, or a tourniquet. The medicinal agent is then injected through the catheter with an infusion pump while the blood flow is stopped. Optionally, the infusion process is repeated in successive cycles that are separated by a rest period in which blood flow in the limb is allowed to resume. A controller can be used to automate the process.
|
