AUTOMATIC ADMINISTRATION INSTRUMENT FOR MEDICAL USE

• US 20140148760A1
• Filed: 01/30/2014
• Published: 05/29/2014
• Est. Priority Date: 07/02/2002
• Status: Active Grant

• Current Assignee: PHC Holdings Corporation
• Original Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Inventors: ISHIKAWA, Tokumi, BABA, Tokumi
• Granted Patent: US 9,731,074 B2
• Time in Patent Office: Days
• US Class Current: 604/125
• CPC Class Codes: A61M 2005/2013 triggering of discharging means by contact of injector with patient body
• CPC Class Codes: A61M 2005/206 With automatic needle insertion
• CPC Class Codes: A61M 2005/208 Release is possible only when device is pushed against the skin, e.g. using a trigger which is blocked or inactive when the device is not pushed against the skin
• CPC Class Codes: A61M 2005/3152 including gearings to multiply or attenuate the piston displacing force
• CPC Class Codes: A61M 2005/5006 Having means for destroying the syringe barrel, e.g. by cutting or piercing
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 2205/581 by audible feedback
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: A61M 5/2066 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/2448 comprising means for injection of two or more media, e.g. by mixing
• CPC Class Codes: A61M 5/326 Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user
• CPC Class Codes: A61M 5/422 Desensitising skin

Abstract

An automatic administration instrument includes a syringe and a partition wall in the syringe which partitions the syringe into different rooms for respectively holding plural kinds of drug solutions or a drug and a drug solution. A partition-wall driver displaces the partition wall and an injection needle is connected to the syringe. A body cap attached to the administration instrument body so as to cover the injection needle. The syringe, the partition wall, and the body cap are configured such that displacing the partition wall dissolves or mixes the drug solutions or the drug and the drug solution in a state that the injection needle is covered by the body cap.

Claims

1-15. -15. (canceled)

16. An automatic administration instrument for medical use for injecting a drug solution filled in a syringe, said automatic administration instrument comprising:

a body for housing the syringe and an injection needle;

a first motor for sliding the syringe within said body in a direction toward the tip of the injection needle such that the injection needle protrudes from said body;

a second motor for operating the syringe to administer the drug solution;

and a switch provided on said body, said switch activating said first motor and said second motor in sequential order while a part of the exterior of said body is being pressed against a body region of a patient to which the drug solution is to be administered,

wherein said switch activates said first motor such that the injection needle protrudes from said body, and thereafter activates said second motor such that air releasing is carried out in advance of administration of the drug solution.

17. The automatic administration instrument as defined in claim 16, wherein air releasing is not carried out when the injection needle is not attached to said body of said administration instrument.

18. The automatic administration instrument as defined in claim 16, wherein the amount of air to be released depends on the rpm of said second motor.

19. The automatic administration instrument as defined in claim 16, wherein during air releasing is carried out, the body is positioned with the injection needle turning upward and the body is not pressed against the body region of the patient.