DELIVERY APPARATUS FOR MEDICAL FLUID IN BOX TYPE WITH A SYRINGE

• US 20100191187A1
• Filed: 10/22/2007
• Published: 07/29/2010
• Est. Priority Date: 10/23/2006
• Status: Active Grant

• Current Assignee: Jung Hyun Kim
• Original Assignee: Jung Hyun Kim
• Inventors: Kim, Jung Hyun
• Granted Patent: US 8,911,404 B2
• Time in Patent Office: Days
• US Class Current: 604/154
• CPC Class Codes: A61M 2005/14264 with means for compensating influence from the environment
• CPC Class Codes: A61M 2205/502 User interfaces, e.g. screens or keyboards
• CPC Class Codes: A61M 5/14244 adapted to be carried by the patient, e.g. portable on the body
• CPC Class Codes: A61M 5/14566 with a replaceable reservoir for receiving a piston rod of the pump

Abstract

Disclosed is a delivery apparatus for medical fluid, in which a body is fabricated in a box shape and a cover is detachably coupled to the body, thereby facilitating the repairing work for the delicate malfunction of the apparatus and a fluctuation-prevention member is provided such that a syringe makes a vertical movement after the installation of the syringe even if the body is fabricated in the box shape.

Claims

1. A delivery apparatus for medical fluid fabricated in a box type with a syringe, the delivery apparatus comprising:

a case including a body 10, an upper portion of which is open and in which a battery receptacle 11 and a syringe receptacle 12 are integrally formed, wherein, a movable shaft 42 rotatably engaged with a rotating shaft 41 installed in a gear box 40, which is driven by a motor 45, is introduced into and withdrawn from a syringe receptacle 12, a keypad 30 for controlling an operation of the movable shaft 42 is installed in a recess 22 of a cover 20 and is fixed by a pressing part 32 and a cover plate 36, and the cover 20 and the body 10 are screw-fastened in a state in which coupling protrusions 15 and 21 thereof are engaged with each other such that the cover 20 is detachably coupled with the body 10.

2. The delivery apparatus as claimed in claim 1, wherein a stopper 17 is formed at a lower portion of the body 10 forming the case such that the stopper 17 is engaged with an engagement part 44 of the gear box 40 having the movable shaft 42 which allows a packing part 51 of a cylinder 50 of the syringe, which is housed in the syringe receptacle 12, to precisely perform a vertical movement, so that the movable shaft 42 is prevented from being fluctuated when the motor 45 operates and when the rotating shaft 41 protruding through the engagement part 44 rotates.

3. The delivery apparatus as claimed in claim 1, wherein the movable shaft 42 having a guide wing 43 is screw-coupled to the rotating shaft 41, and the movable shaft 42 is engaged with a perforation part 13 and a guide groove 14 of the syringe receptacle 12, so that only the movable shaft 42 makes a precise vertical movement when the rotating shaft 41 rotates.

4. The delivery apparatus as claimed in claim 1, wherein only the packing part 51 prepared in the cylinder 50 makes up/down movements in a state in which the movable shaft 42 is inserted into the cylinder 50 of the syringe and the guide wing 43 of the movable shaft 42 is coupled to an embedded part 53 of the packing part 51.

5. The delivery apparatus as claimed in claim 1, wherein the gear box 40 closely comes into contact with the body 10 and the body 10 closely making contact with the gear box 40 has a supporting guide 16 to prevent vibration occurring due to a rotation of the motor 45 from being transferred into the movable shaft 42, and wherein a predetermined gap is formed between the gear box 40 and the body 10, so that the vibration is absorbed.

6. The delivery apparatus as claimed in claim 1, wherein, in order to perform a waterproof treatment relative to a key pad 30 for operating the motor 45 of the gear box 40, a recess 22 is formed in the cover 20 such that the recess 22 has a predetermined depth enough to receive the key pad 30, a connecting hole 22a is formed in the recess 22 for signal connection with the substrate 33 of the key pad 30, a protruding rim 34 having a flange 35 is formed at an edge of the rubber pad 31 covering the substrate 33 received in the recess 22, and a recess rim 23 and a support surface 24 are formed on an outer peripheral surface of the recess 22 such that the recess rim 23 and support surface 24 are engaged with the protruding rim 34, so that surface tension is increased due to a double-engagement, thereby enhancing a water-proof function.

7. The delivery apparatus as claimed in claim 1, wherein in order to couple the body 10 with the cover 20, the body 10 has a stepped protrusion 18 formed at an outer peripheral portion of an upper rim thereof, the cover 20 has a packing groove rim 26 for surrounding a protruding rim 19 defined by the stepped protrusion 18, the protruding rim 19 is pressed in a state in which a packing 60 is embedded in the packing groove rim, an outer rim 27 of the cover 20 is placed on the stepped protrusion 18, and an inner rim 28 of the cover 20 makes contact with an inner wall of the body 10.

8. The delivery apparatus as claimed in claim 1, wherein, in order to fasten the cap 70 with a predetermined fastening force, an entrance part 10b and an inclined guide groove 10c are formed on a cap-coupling part 10a of the body 10, and a stopper 10d is formed at one end of the inclined guide groove 10c, so that a guide protrusion 71 formed on the cap 70 is introduced into the entrance part 10b and then moves along the inclined guide groove 10c to make contact with the stopper while providing a predetermined pressing force, thereby preventing the cap-coupling part of the body from being damaged even if a strong fastening force is applied thereto.