Indwelling needle

• US 20070106221A1
• Filed: 11/09/2005
• Published: 05/10/2007
• Est. Priority Date: 11/09/2005
• Status: Active Grant

• Current Assignee: Medikit Co., Ltd.
• Original Assignee: Medikit Co., Ltd.
• Inventors: Nakajima, Hiroaki
• Granted Patent: US 7,682,341 B2
• Time in Patent Office: Days
• US Class Current: 604/168.10
• CPC Class Codes: A61M 25/0606 "Over-the-needle" catheter assemblies, e.g. I.V. catheters
• CPC Class Codes: A61M 25/0693 Flashback chambers
• CPC Class Codes: A61M 5/3232 Semi-automatic needle retraction, i.e. in which triggering of the needle retraction requires a deliberate action by the user, e.g. manual release of spring-biased retraction means

Abstract

An indwelling needle is provided with an inner needle hub; an inner needle fixedly supported by the inner needle hub; a cover configured to cover the inner needle after use; and a flexible blood monitor being absorptive to blood, an end of which is linked with the inner needle hub.

Claims

1. An indwelling needle comprising:

an inner needle hub;

an inner needle fixedly supported by the inner needle hub;

a cover configured to cover the inner needle after use; and

a flexible blood monitor being absorptive to blood and formed to be of a string shape, the blood monitor having an end linked with the inner needle hub and extending from the inner needle hub.

2. The indwelling needle of claim 1, wherein the blood monitor is configured to regulate the quickness of the spread of the blood.

3. The indwelling needle of claim 1, further comprising:

a plug configured to fix the blood monitor with the inner needle hub, the plug being capable of regulating the tightness of fixation of the blood monitor with the inner needle hub so as to regulate the quickness of the spread of the blood.

5. The indwelling needle of claim 1, wherein the cover is capable of expanding.

6. The indwelling needle of claim 1, wherein the cover comprises an outer cylinder and an inner cylinder, the inner cylinder being axially movably housed in the outer cylinder and detachably supporting the inner needle hub so that the inner cylinder is capable of projecting out of the outer cylinder and the inner needle is capable of receding into the outer cylinder.

7. The indwelling needle of claim 6, further comprising:

an elastic member configured to keep repulsive force to separate the inner cylinder and the inner needle hub.

8. The indwelling needle of claim 7, further comprising:

a latch piece configured to lock the inner cylinder and the inner needle hub in an immovable state relative to the outer cylinder.

4. (canceled)