TISSUE SEALING SYSTEM AND APPARATUS

    公开(公告)号:CA2748492C

    公开(公告)日:2017-05-30

    申请号:CA2748492

    申请日:2009-12-30

    Abstract: A laparoscopic tissue sealant spray apparatus and system having a laparoscopic tissue sealant spray assembly com-bined with a trocar assembly, the tissue sealant spray assembly having an elongate delivery tube. A spray outlet at a distal end of the elongate delivery tube may be rounded or angled. A ring member provided at the distal end of the elongate delivery tube di-rects a spray cone toward a portion of a target tissue site, and the spray cone may be repositioned to a different portion of the target tissue site by rotation of the elongate delivery tube. The trocar assembly includes a vent opening that connects to a venting valve member that provides a vent path which passively opens upon operation of the tissue sealant spray assembly, avoiding ex-cessive pressure build-up within a body cavity.

    VEGF165 DELIVERED BY FIBRIN SEALANT TO REDUCE TISSUE NECROSIS

    公开(公告)号:CA2724527A1

    公开(公告)日:2009-11-26

    申请号:CA2724527

    申请日:2009-05-22

    Abstract: The present application demonstrates the clinical potential of fibrin sealants to locally deliver growth factors to ischemic tissue. More particularly, it demonstrates that hydrogels such as Fibrin Sealants can be used to deliver VEGF165 to prevent tissue necrosis caused by hypoxia or ischemia. Specifically, a Fibrin Sealant (FS) was used to deliver VEGF165 to treat tissue necrosis in both a rodent dorsal flap model and a rodent epigastric flap model. Flaps treated with FS spiked with (rh)VEGF165 developed less necrotic tissue. In addition, immunohistological studies revealed a greater numbers of blood vessels (angiogenesis).

    HAND TRIGGERED TISSUE SEALANT SPRAY APPARATUS AND SYSTEM

    公开(公告)号:CA2593973A1

    公开(公告)日:2006-07-20

    申请号:CA2593973

    申请日:2006-01-12

    Abstract: A control system for use with an apparatus comprising an elongated body defining an interior bore for containing sealant and having proximal and distal ends, a piston movably positioned in the bore, a distal outlet communicating with the bore, a first gas passageway cooperatively associated with the distal outlet and configured to direct gas to create a spray discharge of sealant, and an actuating member cooperatively associated with the piston is described. The system comprises: a control unit (4) comprising a supply valve (V1) and a pressure switch (PS2) for opening and closing the supply valve; and a timing delay control member (PFC1) that is operatively connected to the control unit via the pressure switch (PS2). The control unit is operable upon receipt of a control signal from the apparatus to open the supply valve and activate a flow of gas to the first gas passageway essentially simultaneously with a force being applied to the actuating member to eject sealant from the distal outlet so as to create a spray discharge of sealant. The timing delay control member prevents the pressure switch from closing the supply valve for a predetermined period of time after the applied force is removed from the actuating member to provide a discharge of gas after the user has stopped the ejection of sealant.

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