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US 10,702,677 B2Granted
Introducer sheath and introducer
AssigneeTerumo Kabushiki Kaisha
InventorsRyo Okamura, Tatsuya Ouchi, Keisuke Yoshida, Daisuke Nakashima, Katsuaki Soma
Life of this patent
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Abstract
An introducer sheath is disclosed, which includes a tube body that is percutaneously inserted into a body lumen; and a hub that is connected to a proximal portion of the tube body. The tube body contains a polyvinylidene fluoride resin, a ratio of a thickness to an inner diameter of the tube body is 1/16 or lower, and a ratio of a kink radius to an outer diameter of the tube body is 9.5 or lower.
Claims17
An introducer sheath comprising:
- a tube body configured to be percutaneously inserted into a body lumen;
- a hub that is connected to a proximal portion of the tube body;
- a strain relief portion that is externally fitted to the tube body and hub, the strain relief portion covering an interlock portion in which the tube body is interlocked with the hub, the strain relief portion including a concave portion extending circumferentially around an outer surface of the strain relief portion at a position that overlaps a distal most end of the hub in an axial direction to permit the concave portion to be used as a reference for measuring a kink generation angle;
- the tube body comprises a polyvinylidene fluoride resin, and
- wherein a ratio of a thickness to an inner diameter of the tube body is 1/16 or lower, and a ratio of a kink radius to an outer diameter of the tube body is 9.5 or lower.
2 more elements
An introducer comprising:
- an introducer sheath comprising a tube body configured to be percutaneously inserted into a body lumen, and a hub that is connected to a proximal portion of the tube body, wherein the tube body contains a polyvinylidene fluoride resin, and wherein a ratio of a thickness to an inner diameter of the tube body is 1/16 or lower, and a ratio of a kink radius to an outer diameter of the tube body is 9.5 or lower, and a strain relief portion that is externally fitted to the tube body and hub, the strain relief portion covering an interlock portion in which the tube body is interlocked with the hub, the strain relief portion including a concave portion extending circumferentially around an outer surface of the strain relief portion at a position that overlaps a distal-most end of the hub in an axial direction to permit the concave portion to be used as a reference for measuring a kink generation angle;
- and
- a dilator that is provided with a dilator main body which is insertable into a lumen of the tube body,
- wherein a material, of which the dilator main body is made, has flexural modulus higher than that of a material of which the tube body is made.
1 more element
An introducer sheath comprising:
- a tube body configured to be percutaneously inserted into a body lumen, wherein the tube body comprises a polyvinylidene fluoride resin;
- a hub that is connected to a proximal portion of the tube body;
- a strain relief portion that is externally fitted to the tube body and hub, the strain relief portion covering an interlock portion in which the tube body is interlocked with the hub, wherein the strain relief portion including a concave portion extending circumferentially around an outer surface of the strain relief portion at a position that overlaps a distal-most end of the hub in an axial direction to permit the concave portion to be used as a reference for measuring a kink generation angle;
- and
- wherein the tube body has a ratio of a thickness of the tube body to an inner diameter of the tube body of 1/16 or lower over an entire length in an axial direction of the tube body, a ratio of a kink radius to an outer diameter of the tube body of 9.5 or lower, and the tube body does not have a tapered distal portion.
2 more elements
Dependencies are inferred from the claim text.