Vascular incision apparatus
AssigneeTerumo Kabushiki Kaisha
InventorYuichiro Irisawa
Life of this patent
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Abstract
A vascular incision apparatus is composed in part of a needle for puncturing a blood vessel and a cutter for making an incision in the blood vessel. The apparatus easily, rapidly and reliably creates a vascular incision of the desired length by employing an incision length controlling means to control the length of penetration by the needle into the blood vessel, or by controlling the distance between the respective needle points on first and second needles which face each other across a given distance, one of which needles is movable relative to the other.
Claims34
A vascular incision apparatus comprising:
- a body;
- a puncturing and cutting member having a needle with a sharp point for penetrating a blood vessel and a cutter for making an incision in the blood vessel, which cutter is disposed proximal to the needle;
- and
- incision length controlling means for controlling the length of the incision made by the puncturing and cutting member.
A vascular incision apparatus comprising:
- puncturing and cutting means having a first needle with a sharp point for penetrating a blood vessel, a second needle with a sharp point for penetrating the blood vessel, which point on the second needle lies opposite the point on the first needle and is initially separated therefrom by a predetermined distance, and at least one cutter for making an incision in the blood vessel, which cutter is provided on a proximal end side of the first needle, on a proximal end side of the second needle or on the proximal end sides of both needles, wherein one of the needles is movable relative to the other needle;
- and
- control means for effecting movement by at least one of the two needles in a direction that brings the point of the first needle and the point of the second needle into close mutual proximity;
- wherein the distance initially separating the point of the first needle from the point of the second needle is substantially equal to the length of the incision to be made in the blood vessel by the cutter.
Dependencies are inferred from the claim text.