Puncturing device
AssigneeKaneka Corporation
InventorsYuki Mukai, Miho Kobayashi
Life of this patent
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Abstract
A puncturing device comprising: a resin tube having a distal end and a proximal end, and extending in a longitudinal direction; a metal tube disposed in a lumen of the resin tube; a metal member disposed at a distal end portion of the metal tube; and a metal tip disposed at a distal end portion of the metal member, wherein a flow path is present between an inner surface of the resin tube and an outer surface of the metal member and is in communication with a lumen of the metal tube, the resin tube further includes an opening portion through which the flow path and outside of the resin tube are in communication with each other, and the opening portion is present on a distal side relative to a distal end of the metal tube and on a proximal side relative to the proximal end of the metal tip.
Claims17
A puncturing device comprising:
- a resin tube having a distal end and a proximal end, and extending in a longitudinal direction;
- a metal tube disposed in a lumen of the resin tube;
- a metal member disposed at a distal end portion of the metal tube;
- and
- a metal tip disposed at a distal end portion of the metal member, wherein
- the resin tube includes a flow path which is present between an inner surface of the resin tube and an outer surface of the metal member and which is in communication with a lumen of the metal tube,
- the resin tube further includes an opening portion through which the flow path and outside of the resin tube are in communication with each other,
- the opening portion is present on a distal side relative to a distal end of the metal tube and on a proximal side relative to a proximal end of the metal tip,
- the metal member has an inner cavity opened to at least the proximal side,
- the metal member includes a large-diameter portion and a small-diameter portion which is located on the distal side relative to the large-diameter portion and which has a smaller outer diameter than the large-diameter portion, and
- the metal member further includes a hole, so that the lumen of the metal tube and a space between the inner surface of the resin tube and the outer surface of the metal member are in communication with each other through the hole of the metal member.
A puncturing device, comprising:
- a resin tube having a distal end and a proximal end, and extending in a longitudinal direction;
- a metal tube disposed in a lumen of the resin tube;
- a metal member disposed at a distal end portion of the metal tube;
- and
- a metal tip disposed at a distal end portion of the metal member, wherein
- the resin tube includes a flow path which is present between an inner surface of the resin tube and an outer surface of the metal member and which is in communication with a lumen of the metal tube,
- the resin tube further includes an opening portion through which the flow path and outside of the resin tube are in communication with each other,
- the opening portion is present on a distal side relative to a distal end of the metal tube and on a proximal side relative to a proximal end of the metal tip,
- the resin tube has, on the proximal side relative to the proximal end of the metal tip, an opposed surface opposed to the opening portion, and
- the resin tube has, on the proximal side relative to the opposed surface, a narrowed portion having an outer diameter smaller than an outer diameter of the resin tube on the proximal side relative to the opening portion.
Dependencies are inferred from the claim text.