Indwelling needle assembly
AssigneesMedikit Co., Ltd., Togo Medikit Co., Ltd.
InventorsHiroaki Nakajima, Toshikazu Ohashi
Life of this patent
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Abstract
An indwelling needle assembly usable in combination with an infusion system for infusion into a patient's body is disclosed. The indwelling needle assembly is comprised of a needle having a needlepoint insertable into the patient's body; a sleeve slidably fitted on the needle; a catheter including a catheter tube slidably fitted on the sleeve; a base body fixed to a proximal end of the needle; and a slider fixed to the sleeve and slidably engaged with the base body so as to be movable between a first position to have the needlepoint projecting out of the sleeve and a second position to have the needlepoint retracted in the sleeve, wherein the needle, the sleeve, the base body and the slider are unitarily extractable from the catheter.
Claims18
An indwelling needle assembly usable in combination with an infusion system for infusion into a patient's body, the indwelling needle assembly comprising:
- a needle having a needlepoint insertable into the patient's body;
- a sleeve slidably fitted on the needle;
- a catheter including a catheter tube slidably fitted on the sleeve;
- a base body fixed to a proximal end of the needle;
- and
- a slider fixed to the sleeve and slidably engaged with the base body so as to be movable between a first position to have the needlepoint projecting out of the sleeve and a second position to have the needlepoint retracted in the sleeve,
- wherein the needle, the sleeve, the base body and the slider are unitarily extractable from the catheter,
- wherein the sleeve includes an obliquely cutoff flat end, and the obliquely cutoff flat end projects from the catheter toward the needlepoint, and
- wherein the catheter includes a distal end portion directly fitted on the needle, and a taper portion continuously tapering from the catheter tube toward the distal end portion.
An indwelling needle assembly usable in combination with an infusion system for infusion into a patient's body, the indwelling needle assembly comprising:
- a needle having a needlepoint insertable into the patient's body;
- a sleeve slidably fitted on the needle;
- a catheter including a catheter tube slidably fitted on the sleeve, a distal end portion directly fitted on the needle, and a taper portion continuously tapering from the catheter tube toward the distal end portion;
- a base body fixed to a proximal end of the needle;
- and
- a slider fixed to the sleeve and slidably engaged with the base body so as to be movable between a first position to have the needlepoint projecting out of the sleeve and a second position to have the needlepoint retracted in the sleeve,
- wherein the needle, the sleeve, the base body and the slider are unitarily extractable from the catheter;
- and
- wherein the needle, the sleeve and the catheter are so dimensioned as to enter into the patient's body.
An indwelling needle assembly usable in combination with an infusion system for infusion into a body, the indwelling needle assembly comprising:
- a needle having a needlepoint insertable into the body;
- a sleeve slidably fitted on the needle;
- a catheter including a catheter tube slidably fitted on the sleeve;
- a base body fixed to a proximal end of the needle;
- and
- a slider fixed to the sleeve and slidably engaged with the base body so as to be movable between a first position to have the needlepoint projecting out of the sleeve and a second position to have the needlepoint retracted in the sleeve,
- wherein the catheter includes a distal end portion directly fitted on the needle, and a taper portion continuously tapering from the catheter tube toward the distal end portion,
- wherein the needle, the sleeve, the base body and the slider are unitarily extractable from the catheter,
- wherein the sleeve includes a first surface parallel to an outer surface of the needle and a second surface formed in a flat shape and adjacent to the first surface so that an oblique angle is formed between the first surface and the second surface.
Dependencies are inferred from the claim text.