| 摘要 |
A pain management system for the infusion of drug to a wound site includes a guide needle placed within an introducer tubing. The needle and tubing are pierced through the patient's skin, after which the guide needle is withdrawn The infusion catheter is threaded through the introducer tubing and advanced to the wound site. The introducer tubing is withdrawn and preferably peeled off of the infusion catheter. In accordance with one embodiment, the catheter comprises an elongated tube with a plurality of exit holes along an infusion section of the catheter, and an elongated flexible porous member residing within the tube and forming an annular space between the tube and the member. In accordance with other embodiments, the catheter includes a plurality of exit holes, which combine to form a flow-restricting orifice of the catheter.
|
