Devices and methods for deploying implantable sleeves over blood vessels
In an aspect of some embodiments there is provided apparatuses and methods including a sleeve expander capable of covering with an implantable sleeve an exterior of a bodily vessel, along a chosen length thereof, the sleeve expander configured to maintain at least a portion of the implantable sleeve in an expanded size greater than a cross sectional dimension thereof when in apposition to the exterior. In some embodiments of the present invention, the apparatus further includes a cutting mechanism configured to cut down the implantable sleeve and/or external fixating means configured to fixate a covering section of the implantable sleeve to a corresponding covered section of the bodily vessel.
1. An apparatus, comprising:
an implantable sleeve;
a sleeve expander capable of covering with said implantable sleeve an exterior of a bodily vessel, along a chosen length thereof, said sleeve expander configured to maintain at least a portion of said implantable sleeve in an expanded size greater than a cross sectional dimension of said implantable sleeve when in apposition to said exterior of said bodily vessel, wherein said implantable sleeve is provided at least partially on said sleeve expander; and
a cutting mechanism, operatively connected to, and provided slidably movable in tracks extending along a length of, said sleeve expander, and configured to cut down said implantable sleeve to a covering length corresponding to said chosen length, when in said apposition to said exterior of said bodily vessel.
2. An apparatus according to claim 1 , wherein said sleeve expander comprises an internal mandrel enclosing a channel sized to fit over periphery of said bodily vessel, and an external surface having a circumference sized to hold said portion in said expanded size.
3. An apparatus according to claim 2 , wherein said channel is 4 mm or more in diameter.
4. An apparatus according to claim 2 , wherein said channel is shorter than said chosen length.
5. An apparatus according to claim 1 , wherein said sleeve expander comprises at least one leg having a free end detachably connectable to an outer surface of said implantable sleeve, said leg being transferable from a first outward position, in which said portion is in said expanded size, to an inward position, in which said portion is in said cross sectional dimension or is smaller than said cross sectional dimension.
6. An apparatus according to claim 1 , wherein said cutting mechanism comprises a blade and a lever adapted for selectively positioning said blade in a chosen tracked position.
7. An apparatus according to claim 6 , wherein said blade is rotatable about a longitudinal axis of said implantable sleeve.
8. An apparatus according to claim 1 , further comprising a switch for selectively altering said cutting mechanism from a non-cutting mode to a cutting mode.
9. An apparatus according to claim 1 , wherein said cutting mechanism is designed and arranged to cut through a wall of said bodily vessel when covered with said implantable sleeve for creating a cut end of said bodily vessel with said implantable sleeve in apposition thereto and flush at said cut end.
10. An apparatus according to claim 1 , further comprising a bonding agent introducer having an orifice configured to allow flowing of a bonding agent from a reservoir, connectable to said introducer, to an outer periphery of said implantable sleeve, such that said implantable sleeve, when brought in apposition with said bodily vessel, is bondable to said bodily vessel by said bonding agent.
11. An apparatus according to claim 1 , further comprising a stitchery apparatus configured to suture a covering section of said implantable sleeve to a corresponding covered section of said bodily vessel.
12. An apparatus according to claim 1 , further comprising a pressing apparatus configured to press a covering section of said implantable sleeve and/or a plastically formable fixator provided thereon, such that said covering section is firmly attached to a corresponding covered section of said bodily vessel.
13. An apparatus according to claim 1 , wherein said implantable sleeve comprises a meshed portion.
14. An apparatus according to claim 13 , wherein said meshed portion is braided.
15. An apparatus according to claim 13 , wherein said meshed portion is knitted.
16. An apparatus according to claim 1 , wherein said implantable sleeve is shrinkable to fit in diameter to said bodily vessel when having maximal and minimal outer diameters in between 3 mm to 9 mm, respectively.
17. An apparatus according to claim 1 , wherein said portion is extendable from said axially compressed form to an axially extended form.
18. An apparatus according to claim 1 , wherein said chosen length is 1 cm to 20 cm.
19. An apparatus according to claim 1 , wherein said chosen length is 20 cm to 90 cm.
20. An apparatus according to claim 1 , further comprising metering means arrangeable to facilitate measuring of a covering length of said implantable sleeve upon said bodily vessel.
21. An apparatus according to claim 1 , wherein said bodily vessel is a native vein or artery.
22. An apparatus according to claim 1 , wherein said bodily vessel is a graft.