| 摘要 |
An occlusion device (40) for vascular surgery, said device suitable for clogging treatments of vascular entry sites and for endovascular interventions such as embolizations of blood vessels, treatment of arteriovenous malformations or small aneurysms, arterial dissections and the like, by releasing in an operation region a quick setting surgical glue or haemostatic fluid, through an outlet mouth of a duct (21). The device comprises a means for preventing the surgical glue from contacting within the duct a patient's biological fluids, in particular blood, which would close duct 21. In the case of clogging treatments of vascular entry sites, a backflow preventing means may be provided, said backflow preventing means preferably provided by a coupling means between duct 21 and introducer sheath 3 by which outlet mouth 18 is kept at contact to keep in a one-way fluid tight contact against said outer surface 8 of introducer sheath 3 until an injection pressure P2 is applied to the surgical glue, which causes the release of the surgical glue. In particular, the surgical glue flows through the narrow space 16 defined by a short tube 13 arranged about the surface 8 of introducer sheath 3 and by surface 8, and exploits a zone of the tissues modified by introducer sheath 3 to reach arterial entry site. In another exemplary embodiment, liquid contact preventing means to avoid the contact in the duct between the surgical glue and the biological medium are provided by a barrier liquid that is retained within the duct while the path made through the duct for achieving an operation region, which can be a vascular entry site or an endovascular intervention site. |
