IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0621642
(1990-12-04)
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발명자
/ 주소 |
- Kozlowski David J. (560 Hoover St. Napa CA 94559)
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| 인용정보 |
피인용 횟수 :
67 인용 특허 :
0 |
초록
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A manually operated needle-shielding safety device attachable to a standard hypodermic needle and syringe medical apparatus (42). By forward directed thumb or finger stroke upon a proximally projecting pushrod (128) slidably operable within a pushrod channel (82) positioned parallel to and radially
A manually operated needle-shielding safety device attachable to a standard hypodermic needle and syringe medical apparatus (42). By forward directed thumb or finger stroke upon a proximally projecting pushrod (128) slidably operable within a pushrod channel (82) positioned parallel to and radially removed from the primary syringe barrel plunger (44), the elongated shield (148) is pushed from a housing (66) mounted at the base of the hypodermic needle and syringe apparatus (42), rotated longitudinally from an inverted position, and advanced to the distal end of the syringe apparatus (42) against resistance from a rubber band (64) or integral expansion spring (244). The distal portion of the shield (148) surmounts the tip of the needle (54) and the needle (54) enters the shield (148) laterally through an opening in the shield face (154). The operator then releases thumb or finger pressure upon the pushrod (128) and the enclosed forward end of the shield (148) is pulled rearward by the rubber band (64) or integral expansion spring (244) to surround and safely contain the needle (54) tip. The device can be deployed quickly, surely, and conveniently at the user\s option immediately after the injection process, with one hand, without the need to shift finger grip upon the hypodermic apparatus (42), and without interfering with the user\s concentration upon other important medical tasks. The invention can be used with most currently manufactured needle and syringe devices and does not require modification of existing needle designs, needle hub designs including luer connection designs and low-dose minimum “dead space”designs, needle cementing processes and equipment, fluid chamber designs, and fluid chamber piston engines.
대표청구항
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A shielding device, to be connected to an otherwise ordinary hand-held hypodermic needle and syringe apparatus having a hollow syringe barrel, finger flanges radiating in opposite directions from a rim circumscribing the proximal opening of said syringe barrel, a plunger slidable within and partiall
A shielding device, to be connected to an otherwise ordinary hand-held hypodermic needle and syringe apparatus having a hollow syringe barrel, finger flanges radiating in opposite directions from a rim circumscribing the proximal opening of said syringe barrel, a plunger slidable within and partially projecting rearward from the open proximal end of said syringe barrel, a forward projecting pointed hollow needle, and a means for hermetically joining the proximal end of the lumen of said needle to the distal end of the interior chamber of said syringe barrel, said hand-held hypodermic needle and syringe apparatus being hereinafter referred to as a hypo unit, the improvement being said shielding device, which is intended for connection to said hypo unit, comprising: a rearward projecting pushrod slidably operable within a pushrod channel secured to said syringe barrel of said hypo unit, the longitudinal axis of said pushrod channel being generally within the same plane as the longitudinal axis of said hypo unit and a greater distance radially from the longitudinal axis of said hypo unit than is the surface of said syringe barrel, the direction of lateral displacement being herein defined as up, and the opposite direction as down; a shield having an interior region for containment of the distal portion of said needle of said hypo unit, said shield having a proximal end and a distal end, said shield having a shield face on one elongated side, said shield face having a proximal portion and a distal portion, said proximal portion having an opening allowing lateral admission of said needle into the interior of said shield, said distal portion having a barrier preventing the lateral exit of said needle from said shield\s interior region; a connecting means, to connect said shield to the distal portion of said pushrod; a positioning means, to position said shield face in a generally downward direction toward the surface of said hypo unit, the longitudinal axis of said shield being positioned generally within the same plane as the longitudinal axis of said hypo unit and the longitudinal axis of said pushrod channel, the distal end of said shield being positioned in a generally forward pointing direction; a resistance means, having a first end connected to said shield, and a second end moored at a mooring point stationary relative to said syringe barrel, said mooring point being to the rear of said first end when said pushrod is extended to a forward position, said mooring point also being a discrete distance below the line defined by the longitudinal axis of said pushrod channel; an enabling means, enabling the distal portion of said pushrod which extends forward of said pushrod channel to possess enough up and down travel in relation to the longitudinal axis of said hypo unit so that said pushrod does not stop said shield\s necessary up and down movement during said shield\s deployment; whereby, when said shield is pushed to the distal end of said hypo unit, said shield laterally engulfs said needle into said shield\s interior region through said side opening, and said shield is thereafter retracted by said resistance means to contain the tip of said needle.
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