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Indwelling needle device

A technology of indwelling needles and outer needles, which is applied in the direction of needles, puncture needles, trocars, etc., and can solve the problem that two hands are required for the return operation

Inactive Publication Date: 2014-10-22
JMS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, although the piercing operation can be performed with one hand, two hands are required for the retraction operation
[0019] However, in the medical field, there are cases where the operator who operates the indwelling needle device 900 must press and hold the patient's arm with one hand, etc.

Method used

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Examples

Experimental program
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Embodiment Construction

[0037] In the above-described indwelling needle device of the present invention, it is preferable that the upper surface of the rear end portion has an inclined surface inclined so as to become lower as it approaches the sealing body. Furthermore, it is preferable that a protrusion protruding upward is formed on the outer peripheral surface of the rear end of the sealing body or its vicinity. This makes it easy for fingers to touch the protrusions formed on the sealing body and apply force.

[0038] The rear end portion of the stopper may have a pair of clamping portions for clamping the guide tube in the horizontal direction. In this case, the pair of holding portions may be elastically displaceable so as to hold the catheter. Thus, by gripping the pair of gripping parts, the catheter between them can be gripped by the pair of gripping parts. Therefore, return work can be performed more easily.

[0039] Next, preferred embodiments will be shown to describe the present inve...

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PUM

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Abstract

A hub (40) accommodated inside an internal cavity (24) in a shield (20) can be displaced from an initial position, in which an inner needle (50) penetrates an outer needle (30) and protrudes from the tip of the outer needle, to a retracted position, in which the inner needle is accommodated in the internal cavity in the shield. When a stopper (70) is inserted into the internal cavity in the shield, and the tip of the stopper makes contact with the hub in the initial position, the rear end section (71) of the stopper is exposed behind the shield. By using one hand to grip the rear end section of the stopper while pressing the rear end of the shield or the area proximal thereto with a finger, the stopper can be removed from the shield when in the state in which the tip of the stopper makes contact with the hub in the initial position.

Description

technical field [0001] The present invention relates to an indwelling needle device. The indwelling needle device has a soft outer needle and a hard inner needle, and can be punctured into a patient with the end of the inner needle protruding from the end of the outer needle. The needle is retracted from the outer needle. Background technique [0002] The indwelling needle device is widely used in the treatment of infusion, blood transfusion, extracorporeal blood circulation, and the like. During this procedure, there is a risk of damaging the blood vessel if the metal needle is left in it. Therefore, an indwelling needle device including a soft outer needle and a hard inner needle is known. The outer needle and the inner needle are punctured into the patient's blood vessel in a state where the tip of the inner needle protrudes from the tip of the outer needle, and then the inner needle is retracted from the outer needle, leaving only the outer needle in the patient. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M25/06A61M25/02
CPCA61M25/0606A61M25/0637A61M25/0631A61M5/158A61B17/3417A61B2017/347
Inventor 伊藤亨濑户口大介
Owner JMS CO LTD