Indwelling catheter, hollow needle, and indwelling needle assembly
First Claim
1. An indwelling catheter comprising a catheter tube, whereinthe catheter tube is provided with a inserted portion which is to be inserted into a patient and a main portion which is provided on a base end side of the inserted portion,a tapered portion is formed on at least a part of the inserted portion, andan outer diameter of the inserted portion is thinner than an outer diameter of the main portion.
1 Assignment
0 Petitions
Accused Products
Abstract
An indwelling catheter comprises a catheter tube. The catheter tube is provided with an inserted portion which is to be inserted into a patient and a main portion which is provided on a base end side of the inserted portion. Furthermore, a tapered portion is formed on at least a part of the inserted portion. An outer diameter of the inserted portion is thinner than an outer diameter of the main portion. According to the above-mentioned indwelling catheter, since the outer diameter of the inserted portion is made thinner than that of the main portion by providing the tapered portion, a pricking pain of a patient is reduced. In addition, since the outer diameter of the inserted portion is made thin without the need of making the outer diameter of the main portion thin, a sufficient flow amount of fluid for medical interventions can be secured.
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Citations
14 Claims
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1. An indwelling catheter comprising a catheter tube, wherein
the catheter tube is provided with a inserted portion which is to be inserted into a patient and a main portion which is provided on a base end side of the inserted portion, a tapered portion is formed on at least a part of the inserted portion, and an outer diameter of the inserted portion is thinner than an outer diameter of the main portion.
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7. A hollow needle comprising:
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an inserted distal portion which is to be inserted into a patient; and a hollowed main portion which is provided on a base end side of the inserted distal portion, wherein an outer diameter of the inserted distal portion is thinner than an outer diameter of the hollowed main portion. - View Dependent Claims (8, 9)
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10. An indwelling needle assembly comprising:
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an inner needle which is to be inserted into a patient; and an indwelling catheter into which the inner needle is inserted to be set, wherein the indwelling catheter has a catheter tube which is made of transparent material, the catheter tube is provided with an inserted portion which is to be inserted into the patient along with the inner needle and a main portion which is provided on a base end side of the inserted portion, a tapered portion is formed on at least a part of the inserted portion, an outer diameter of the inserted portion is thinner than an outer diameter of the main portion, and the inner needle is provided with an inserted distal portion which is made of metal and a hollowed main portion which is made of transparent material. - View Dependent Claims (11, 12, 13, 14)
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Specification