Syringe needle abstract
A mini electrical syringe needle destroyer, consisting of a syringe
needle destroyer, a neighboring needle detaching device contained
in the same framework as the destroyer, and a needle collecting
box that can be plugged into the framework for automatic collection
of waste needles.
Syringe needle claims
What is claimed is:
1. A destruction device for a flanged needle head attached to a
syringe, the device including a casing having a top wall provided
with a needle head insertion opening, electric circuit means associated
with the casing including a pair of electrodes within the casing
under the needle head insertion opening, the electrodes being mutually
located for receiving a needle portion of a needle head inserted
in the opening therebetween whereby a short circuit is created between
the electrodes for melting the needle portion, and the casing further
including separator means for disconnecting the needle head with
melted needle portion from the syringe, and collector means into
which the separated needle head falls, wherein the separator means
comprises an elongate guide track in the top wall of the casing
extending from the needle head insertion opening, the guide track
having downwardly inclined side walls for receiving the needle head
flange thereunder after melting of the needle portion whereby sliding
of the needle head along the guide track effects separation of the
needle head from the syringe.
Syringe needle description
BACKGROUND OF THE INVENTION
Usually hospital people either throw away used syringe needles
or sterilize them and reuse them. In case that these needles are
thrown away, infections may be spread out and may endanger (carelessly
hurt human bodies and cause infections) cleaners' health. If these
needles are reused, they may hurt medical people and cause infections
in the process of detaching, sterilizing and storing these needles.
For security considerations, basically all medical people usually
throw away their needles. In view of this, this invention is made
to provide a mini electrical syringe needle destroyer.
SUMMARY OF THE INVENTION
The major object of this invention is to provide a mini electric
syringe needle destroyer with a power control switch, a circuit
protecting device (fuse), a transformer, and two inter-crossing,
non-contacting electrodes which can bring about flash electric-heat
to destroy syringe needles.
Another object of this invention is to provide a mini electric
syringe needle destroyer with a needle detaching device which consists
of a round needle-head inserting hole located on top of the outer
case, i.e., on top of two non-contacting electrodes of the needle
destroying device, and a needle detaching slide track with its upper
end connecting to the needle-head inserting hole, of which the width
is between the neck of the injector and the shoulder of the needle-head.
The major advantage of this invention is that the user simply holds
the injector and plugs the used needle head into the needle-head
destroy device so that the needle is in contact with both non-contacting
electrodes. At this moment the used needle will absorb the strong
current resulting from flash short-circuit of the two electrodes.
The second advantage of this invention is that the destruction,
the detachment, and the collection of the needles can be done all
at once, thus simplifying the operation.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of a needle-head destroy device in
accordance with the invention, with its outer casing shown in phantom,
FIG. 2 is an exploded perspective view of the device part broken
away,
FIG. 3 is a sectional view through part of the device showing a
needle inserted for destruction,
FIG. 4 is an enlarged sectional view on line A--A of FIG. 2 and
FIG. 5 is a diagram showing the sequence steps in the destruction
of a needle.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Please refer to FIG. 1 and FIG. 2. FIG. 1 is a better illustration
of actual use of the syringe needle-head destroy device, while FIG.
2 is the overall system configuration. This invention consists of
the needle-head destroy device shown in FIG. 1 the outer case shown
in FIG. 2 and the needle-head collecting box within the case. The
needle-head destroy device consists of the power wires 11 that fit
home-use power supply (110 V or 220 V), a switch 12 a transformer
13 two electrodes 14 15 and fuse 16. The electrodes 14 and 15
are, respectively, high-melting point platinum-coated 141 151
and alloy of copper and gold inner-layer 142 152. As shown in FIG.
2 there is a keyhole-shaped needle-head detaching device 21 on
top of the outer case. The needle-head detaching device 21 includes
a needle-head inserting hole 211 and a needle-head slide track 212
with inclined sides (See FIG. 4). The needle-head inserting hole
211 is a round hole on top of the two electrodes 14 and 15 so that
when needle-heads are inserted they will cause a downward pressure
on the electrodes. A hoof-shaped supporting frame is located under
the said hole, somewhat lower than the needle-head slide track 212
and with the same width as that of the needle-head slide track.
The hoof-shaped supporting frame 213 has a width as large as that
of the needle-head slide track 212 but a little smaller than the
needle-head shoulder 311 and larger than the rest of needle-head.
The drawer like needle-head collector 22 is equipped with a heat-insulating
metal plate.
The operations proceed as follows:
(1) First press down the switch connector 12 for power supply.
(2) After heated, insert the needle-head 31 into the needle-head
insertion hole 211. Then the needle-head 31 forms a short circuit
between electrodes 14 and 15. As the cross section of the needle-head
is very small, and its electric resistance is larger than the electrodes
(Electric resistance reversely proportionates with the cross section.),
the needle-head can completely absorb the strong current resulting
from the flash of short circuit. The needle-head 31 will thus be
melted and deformed by the high temperature enabling the injector
to move downward until the needle-head flange 311 is stuck by supporting
frame 213.
(3) Then the injector and the needle-head can be moved along to
the other side of the needle-head slide track 212. Since the supporting
frame 213 is a little lower than the needle-head slide track 212
the flange of the needle-head, 311 will be stuck under the needle-head
slide track.
(4) Hence in the sliding process the needle-head that could be
destroyed at any time is separated from the injector 32 by the inclined
guide track walls and drops on a metal plate (not shown) in the
needle-head collecting box 22 and completes destroying, detaching,
and needle-head collecting safely. Since transformer 13 decreases
several times the input voltage such that the voltage across the
electrodes is only 3-4 voltages, limiting the fuse (16) current
between a safe range of 5-30 Amp. The operating procedures are shown
in FIGS. 1 2 3 and 4. In the illustrated example, the fuse (16)
current is 5-30 Amp. When accidental short-circuit on the electrodes
14 and 15 is incurred by any accidental objects, the fuse will be
burned up to cut off power and prevent any extension of danger.
The invention covers any device that modifies or changes the detailed
structure, configuration, or operation described herein without
leaving the spirit and limit of this invention. |