申请人:——
公开号:US20010007931A1
公开(公告)日:2001-07-12
Vascular access systems and devices for facilitating repeated access to a blood vessel for the external treatment of blood, such as dialysis, and in intra-venous administration of medicines, such as heparin, for extended periods of time. The vascular access systems comprise an anastomosis graft vessel, an occlusal balloon, and a port device for accessing the occlusal balloon. Occlusal balloons can be nonpermeable or permeable to drive an osmotic gradient and to deliver agents, such as heparin, into the blood stream. In addition, occlusal balloons can adopt a distended and a collapsed configuration, the latter allowing for blood flow through the anastomosis graft vessel.
血管通路系统和装置用于方便重复进入血管,以进行血液外部处理(如透析)和静脉内长时间给药(如肝素)。血管接入系统包括吻合移植血管、咬合球囊和用于接入咬合球囊的端口装置。咬合球囊可以是非渗透性的,也可以是渗透性的,以驱动渗透梯度并将肝素等药剂输送到血流中。此外,咬合球囊还可采用膨胀和塌陷结构,后者可使血液流经吻合移植血管。