Safety syringe abstract
A coupling structure for self-destruction and safety syringe including
a coupling member is formed on a front-end of a self-destruction
and safety plunger. Upon the plunger being pushed in a hollow barrel
until the plunger cannot be pushed any further, a lengthways long
slit together with a coupling member are able to deform and thus
provide for an allowance spacing when forcedly squeezed, and thereby
enables the coupling member to easily and accurately form a complete
coupling.
Safety syringe claims
What is claimed is:
1. A coupling structure for self-destruction and safety syringe,
which provides for implementation in the coupling structure for
a plunger of the self-destruction and safety syringe, and is a structural
configuration for when the plunger couples with a retaining ring,
and is primarily characterized in that: a lengthways long slit is
configured in an area of a coupling member, and which provides for
a forcedly squeezed deformation allowance spacing when coupling
with the retaining ring; and upon the plunger being mutually coupled
with the retaining ring when pushed forward, the lengthways long
slit together with the coupling member are able to deform and thus
provide for an allowance spacing when forcedly squeezed, and thereby
enables the coupling member to more easily and accurately form a
mutual coupling with the retaining ring, and thus accommodate differing
coupling forces required by syringes of differing capacity.
2. The coupling structure for self-destruction and safety syringe
according to claim 1 wherein the long slit is configured lengthways,
and is defined in an area of a stem and the coupling member, and
assumes a non-open state.
3. The coupling structure for self-destruction and safety syringe
according to claim 1 wherein a perforation is defined in a rubber
bulb, and provides for a plug member to embed thereinto.
4. The coupling structure for self-destruction and safety syringe
according to claim 1 wherein the coupling member assumes a conical
form, and is provided with an inclined guide face.
Safety syringe description
BACKGROUND OF THE INVENTION
[0001] (a) Field of the Invention
[0002] The present invention relates to a coupling structure for
self-destruction and safety syringe, and more particularly to the
coupling structure wherein a lengthways long slit is configured
in an area of a coupling member, and utilized to provide a deformation
allowance for when forcedly squeezing a coupling, and implemented
in the coupling structure of a plunger of the self-destruction and
safety syringe.
[0003] (b) Description of the Prior Art
[0004] Infection from medical treatment is an intolerable issue,
and overwhelming majority of channels of infection for many virulent
diseases is through infection of blood. Therefore, one-time usage
of medical treatment appliances or because of individual requirements
is clearly of great importance.
[0005] Thus prior to the present invention the inventor invented
two configurations for a syringe including a self-destruction syringe
and a safety syringe, moreover successively acquired patents for
same in the United States of America, Taiwan, and China, having
patent numbers U.S. Pat. No. 6488657 B1 U.S. Pat. No. 5993419
ZL02239125.8 202056 respectively, objective of which was to provide
a traditional syringe with a configuration that only allowed single-usage,
and did allow for recycling after the syringe was discarded, and
with such a configuration to realize complete eradication of infection
from needles used in medical treatment.
[0006] In light of the aforementioned related patents, a primary
structural characteristic of the self-destruction and the safety
syringe is in a coupling member configured on a plunger, which provides
for coupling to a retaining ring of a needle holder. Upon the plunger
being pulled back, a plug member disengages from the plunger and
a rubber bulb within the self-destruction syringe, thereby enabling
the syringe to lose an airtight vacuum state, and thus losing suction
functionality for the syringe to be reused. Furthermore, regarding
the safety syringe, the needle and the needle holder integral therewith
are received within a hollow barrel, thereby achieving functionality
of a safety design, wherewith medical personnel are prevented from
being pricked by the needle.
[0007] Hence, coupling action of the coupling member is a cardinal
key of the self-destruction syringe and the safety syringe, and
therefore structural design of the coupling member is of particular
importance.
SUMMARY OF THE INVENTION
[0008] A primary objective of a coupling structure for self-destruction
and safety syringe of the present invention is to provide the coupling
structure that can be implemented in the self-destruction and safety
syringe, and thereby furnish a structural design that can accommodate
syringes of differing capacity. The coupling structure primarily
comprises a lengthways long slit configured in an area of a coupling
member, and which provides for a forcedly squeezed deformation allowance
spacing when coupling, thereby enabling the coupling member to easily
and accurately form a mutually coupling with a retaining ring of
a needle holder. Therefore, such a coupling structure allows for
implementation in syringes of comparatively larger or relatively
smaller capacity, whereby because a coupling force required by barrels
of comparatively larger capacity is correspondingly large, and barrels
of smaller capacity, which thus have a corresponding space restriction,
thereby require a greater need for a precise coupling connection.
[0009] To enable a further understanding of the said objectives
and the technological methods of the invention herein, the brief
description of the drawings below is followed by the detailed description
of the preferred embodiments.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1A shows an exploded elevational view of a self-destruction
syringe according to the present invention.
[0011] FIG. 1B shows a front view of the self-destruction syringe
according to the present invention.
[0012] FIG. 2 shows a partial exploded elevational view of characteristics
of the self-destruction syringe according to the present invention.
[0013] FIG. 3 shows a cross sectional schematic view depicting
drawing out of medicament according to the present invention.
[0014] FIG. 4A shows a first drawing of a cross sectional view
of the self-destruction syringe in usage according to the present
invention.
[0015] FIG. 4B shows a second drawing of a cross sectional view
of the self-destruction syringe in usage according to the present
invention.
[0016] FIG. 4C shows a third drawing of a cross sectional view
of the self-destruction syringe in usage according to the present
invention.
[0017] FIG. 5 shows a cross sectional view of the self-destruction
syringe in a lost-vacuum state according to the present invention.
[0018] FIG. 6 shows an exploded elevational view of a safety syringe
according to the present invention.
[0019] FIG. 7 shows a partial exploded elevational view of the
safety syringe according to the present invention.
[0020] FIG. 8A shows a first drawing of a cross sectional view
of the safety syringe in usage according to the present invention.
[0021] FIG. 8B shows a second drawing of a cross sectional view
of the safety syringe in usage according to the present invention.
[0022] FIG. 9 shows a cross sectional schematic view of containment
in a barrel of the safety syringe according to the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0023] Referring to FIGS. 1A, 1B and 2 which show an embodiment
of a self-destruction syringe of the present invention, wherein
structure of the self-destruction syringe is primarily configured
to comprise a sleeve 1 a needle base 2 a hollow barrel 3 a plunger
4 and a rubber bulb 5. Wherein the hollow barrel 3 is so configured
to provide for containing the rubber bulb 5 and the plunger 4. A
retaining ring 32 is configured interior of a front-end connecting
holder 31 and which provides for a coupling member 402 of a plug
member 40 of the plunger 4 to be retained therein. A front-end of
the plunger 4 is adapted to form a coupling head 41 which provides
for coupling with the rubber bulb 5. An air escape slit 42 is defined
in a side of the coupling head 41 whereby the air escape slit 42
is designed as an air escape configuration for when the plug member
40 disengages from the coupling head 41 and thereby disenables
the hollow barrel 3 from maintaining an airtight vacuum, and thus
realizes a safety self-destruction structure.
[0024] The plug member 40 of a frontal section of the coupling
head 41 is adapted to form the coupling member 402 a stem member
406 a plurality of hermetic sealing rings 403 and a stop-leakage
ring 401. Wherein a lengthways long slit 405 is defined on the stem
member 406 and the coupling member 402. When the plunger 4 is pushed
forward until can no longer be pushed, thereat the plug member 40
of the plunger 4 engages with the retaining ring 32 whereupon the
coupling member 402 is forcedly squeezed to couple therein, at such
time the long slit 405 thus primarily provides for allowance spacing.
A perforation 51 is defined center of the rubber bulb 5 and which
provides for the plug member 40 to penetrate. When the aforementioned
hermetic sealing rings 403 and the stop-leakage ring 401 are embedded
within the perforation 51 a stop-leakage hermetically sealed configuration
is thereupon formed.
[0025] Referring to FIG. 3 which shows the present invention during
usage, whereby operating procedure is exactly same as operating
method of a conventional hypodermic syringe. First, as with the
conventional syringe, a needle is inserted into a medicine bottle
6 containing an injection medicament. Because the rubber bulb 5
of the plunger 4 realizes a vacuum state with an inner wall of the
hollow barrel 3 therefore when the plunger 4 is pulled back from
the hollow barrel 3 the medicament is drawn out of the medicine
bottle 6 and into the hollow barrel 3 and thus is in a standby
state ready for injection. After slight adjustment by medical personnel,
the syringe is ready to carry out an injection. The operating procedure
as disclosed completely complies with traditional medical practices
and approved regulations for use of the hypodermic syringe, and
thus there is no need for additional training on operating usage.
[0026] Referring to FIGS. 4A, 4B and 4C, upon the medical personnel
pressing on the plunger 4 a front push of the vacuum formed by
the rubber bulb 5 thereby injects the medicament into a body of
a patient through the needle. When the rubber bulb 5 front reaches
a bottom of the hollow barrel 3 the coupling member 402 thereupon
forms an appropriate resistive force within an injection orifice
33. Thus the injection procedure is completed, and design of the
stem member 406 enables complete injection of the medicament without
leaving a trace of the medicament within the hollow barrel 3 (see
FIG. 4A). Thereupon, the medical personnel can withdraw the needle
from the patient.
[0027] However, in order to prevent reuse of the hollow barrel
3 after the needle has been withdrawn from the body of the patient,
the plunger 4 can be further pressed forward (see FIG. 4B), thereby
enabling the coupling member 402 of the plug member 40 to embed
into the retaining ring 32 of the hollow barrel 3. At moment of
forming a coupling, resilience of a conical surface of an inclined
guide face 404 of the coupling member 402 together with the lengthways
long slit 405 are able to deform and thus provide for the allowance
spacing when forcedly squeezed, and thereby enables the coupling
member 402 to even more easily and accurately form a mutual coupling
with the retaining ring 32. Thus the stem member 40 is completely
coupled within the retaining ring 32 forming a self-destruction
condition.
[0028] Notwithstanding, after an operator has completed the injection
and completed coupling of the syringe as aforementioned, the plunger
4 must be pulled back. Because a coupling force of the coupling
member 402 and the retaining ring 32 is greater than strength of
a secure fixing of the plug member 40 and the coupling head 41
thus the plug member 40 and the coupling head 41 break apart (see
FIG. 4C). After pulling back the plunger 4 the plug member 40 is
coupled to the retaining ring 32 of the hollow barrel 3 and backward
pulling of the plunger 4 and the rubber bulb 5 enables the central
perforation 51 of the rubber bulb 5 to assume an open state.
[0029] According to the aforementioned, and referring to FIG. 5
after completion of the injection procedure, and upon pulling back
the plunger 4 the coupling member 402 breaks apart from the coupling
head 41 of the plunger 4 and at the same time disengages from the
perforation 51 of the rubber bulb 5 thereby enabling the perforation
51 to assume a through-passage state connecting with the air escape
slit 42. With such a configuration between the rubber bulb 5 and
the plunger 4 because of the disengaging of the plug member 40
an air vent so produced disenables the hollow barrel 3 the plunger
4 and the rubber bulb 5 configuration from maintaining an airtight
state, and thus loses functionality to draw out and inject the medicament.
Hence, when a user pulls and pushes the plunger 4 air thus escapes
from the air escape slit 42 of the perforation 51 and the coupling
head 41 and disenables the rubber bulb 5 and the hollow barrel
1 from reforming a hermetic sealed space, thereby disallowing the
operator from reusing the present invention to implement drawing
out or injecting of injection medicament. The aforementioned disclosure
has been taken in consideration as a safety self-destruction aspect,
because the drawing out and injection of the medicament by the syringe
needs an air tight structural space to implement such, thus the
present invention prevents the hollow barrel 3 from being reused,
thereby eradicating completely occurrence of infection from medical
treatment.
[0030] Referring to FIGS. 6 and 7 which show a configuration of
the safety syringe of the present invention, wherein the safety
syringe is structured to comprise the sleeve 1 the needle base
2 the barrel 3 a secure fixing holder 7 the plunger 4 and the
rubber bulb 5. Moreover, the secure fixing holder 7 comprises a
needle holder 71 and a coupling holder 72. Wherein the barrel 3
is a hollow tube, and formed as a receptacle chamber 30. A drop
annular groove 34 of comparatively larger caliber is defined in
an inner wall of a front-end caliber of the receptacle chamber 30.
The annular groove 34 provides for coupling of the needle holder
71 of the secure fixing holder 7 and the needle holder 71 provides
for fixedly connecting the needle base 2 therein. Moreover, a perforation
70 is defined in a central position of the secure fixing holder
7 and provides for the medicament to be injected into the needle
2. An upper-step ring 711 and a lower-step ring 712 are configured
on a lower section of the needle holder 71 wherein diameter of
the lower-step ring 712 is greater than that of the upper-step ring
711. Moreover, a plurality of allowance slits 714 714' are annular
distributed and defined on the lower-step ring 712 thereof, and
therefrom a plurality of spring leaves 7121 7121' are thus formed.
An inner annular receptacle groove 715 formed by the lower-step
ring 712 protruding out more than the upper-step ring 711 and structural
design of the allowance slits 714 714' enable the spring leaves
7121 7121' to be provided with a superior resilient allowance.
When the secure fixing holder 7 and the barrel 3 are joined, the
spring leaves 7121 7121' of the lower-step ring 712 are utilized
to couple with the annular groove 34 and thereupon completes a
fixed connection thereof. An inner stem 716 downwardly extends from
the inner annular receptacle groove 715 of a lower section of the
needle holder 71 and the inner stem 716 provides for penetrating
and engaging with a receptacle recess 721 of the coupling holder
72. In addition, an upper coupling ring 717 on an extremity of the
inner stem 716 mutually couples with a lower coupling ring 725 of
the coupling holder 72 thereby confining movement of the coupling
holder 72 to a straight line on the inner stem 716. A top section
of the coupling holder 72 circumferentially forms a conical surface
722 and an annular holder 723 is configured on the conical surface
722. Wherein, when the coupling holder 72 and the needle holder
71 engage, the conical surface 722 provides for forming a resistance
against the inner annular receptacle groove 715 of the needle holder
71 and an inner wall of the lower-step ring 712 and the spring
leaves 7121 7121' thereby enable complete engagement of the coupling
holder 72 and the needle holder 71. Furthermore, the annular holder
723 functioning in coordination with a lower inner wall of the barrel
3 can thereby ensure accuracy in assembling the secure fixing secure
fixing 7 and the barrel 3.
[0031] In addition, the conical coupling member 402 and the covering
rubber bulb 5 are configured on an end of the plunger 4 wherein,
the coupling member 402 embeds into a retaining ring 724 configured
in a bottom of the coupling holder 72 thereby forming a structural
configuration which only allows pushing in one-way, and inability
to pull out. However, to eliminate any shortcomings and achieve
objectives as disclosed, the lengthways long slit 405 is configured
on an area of the coupling member 402 of the present invention,
and referring to FIG. 8A, upon coupling, the lengthways long slit
405 together with the retaining ring 724 are able to deform and
thus provide for the allowance spacing when forcedly squeezed, and
thereby ensure the coupling member 402 maintains a secure mutual
coupling with the retaining ring 724. Furthermore, such a configuration
allows for accommodation of a comparatively larger coupling force
required by barrels of comparatively larger capacity, as well as
barrels of smaller capacity, which thus have a corresponding space
restriction, thereby require a greater need for a precise coupling
connection.
[0032] Referring to FIGS. 7 and 9 the plunger 4 is pushed forward
until engagement with the retaining ring 724 of the coupling holder
72 thereat disenabling disengagement from the secure fixing holder
7 and when the plunger 4 is pulled back and thus forces the spring
leaves 7121 7121' of the needle holder 71 to disengage from coupling
with the support ring 35 of the annular groove 34 the needle base
2 and the secure fixing holder 7 are thereby enabled to be retracted
back within the receptacle chamber 30 of the barrel 3. Such a configuration
realizes a safety consideration that prevents the medical personnel
from being pricked by the needle.
[0033] In conclusion, it is of course to be understood that the
embodiments described herein is merely illustrative of the principles
of the invention and that a wide variety of modifications thereto
may be effected by persons skilled in the art without departing
from the spirit and scope of the invention as set forth in the following
claims. |