Occlusion device for vascular surgery

摘要

An occlusion device for vascular surgery, 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. The device prevents the surgical glue from contacting within the duct a patient's biological fluids, in particular blood, which would close the duct. In the case of clogging treatments of vascular entry sites, a backflow preventing device may be provided, preferably provided by a coupling device between the duct and an introducer sheath by which an outlet mouth is kept in contact to keep in a one-way fluid tight contact against the outer surface of the introducer sheath until an injection pressure P2 is applied to cause release of the surgical glue.

主权项

1. A surgical glue-releasing device for closing a blood passage of a blood vessel in an operation region in a patient's body, wherein said operation region is located just before said blood passage, the device comprising an injection duct that has an inlet port and an outlet mouth arranged for releasing a surgical glue at said operation region, said injection duct being arranged to move through a biological medium in the patient's body from an opening on a skin plane of said patient to said operation region in such a way that, once said operation region has been reached by said injection duct, said outlet mouth is in said operation region and said inlet port remains outside of said opening on said skin plane, said inlet port is configured to be hydraulically connected with a source of said surgical glue and with a piston that can be operated by an operator for applying an injection pressure on said surgical glue and for causing:
flow of said surgical glue through said injection duct, and a release of said surgical glue at said operation region through said outlet mouth, wherein said outlet mouth is arranged against an outer surface of an introducer sheath, and said outlet mouth is configured to detach from said introducer sheath only when said piston is operated, in such a way to provide a one-way fluid tight contact against said outer surface of said introducer sheath and to impede a material of said biological medium from penetrating into said injection duct, thus preventing in said injection duct said surgical glue from contacting said biological medium before said surgical glue is released at said operation region through said outlet mouth.