CA1302821C - Disposable covered needle safety assembly - Google Patents
Disposable covered needle safety assemblyInfo
- Publication number
- CA1302821C CA1302821C CA 585391 CA585391A CA1302821C CA 1302821 C CA1302821 C CA 1302821C CA 585391 CA585391 CA 585391 CA 585391 A CA585391 A CA 585391A CA 1302821 C CA1302821 C CA 1302821C
- Authority
- CA
- Canada
- Prior art keywords
- cover housing
- needle assembly
- needle
- cylindrical cover
- hypodermic syringe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
"DISPOSABLE COVERED NEEDLE SAFETY ASSEMBLY"
ABSTRACT OF THE DISCLOSURE
A needle assembly and cylindrical cover housing which are usable with a conventional hypodermic syringe. The needle assembly has a circular mount on it with catch slots and slanted surfaces. The cover housing has inward projections which are flexible so that the hypodermic syringe can be received in the cover housing and also for frictionally engaging in the catch slots so as to secure the needle assembly completely in the cover housing after usage.
ABSTRACT OF THE DISCLOSURE
A needle assembly and cylindrical cover housing which are usable with a conventional hypodermic syringe. The needle assembly has a circular mount on it with catch slots and slanted surfaces. The cover housing has inward projections which are flexible so that the hypodermic syringe can be received in the cover housing and also for frictionally engaging in the catch slots so as to secure the needle assembly completely in the cover housing after usage.
Description
~3~
"DISPOSABLE COVERED NEEDLE SAFETY ASSEMBLY"
BACKGROUND OF THE INVENTION
This invention relates to disposable injection devices, and in particular relates to a disposable covered needle assembly which before and after use, completely covers the needle so as to protect all concerned individuals therefrom.
In the past, disposable shots have been available, but none have adequately provided for protection of the person administering the injection, the patient and those handling waste materials. Most disposable shots have provided a plastic needle cover for protecting concerned individuals before usage of the shot. However, once the injection had been administered, often the needle was left exposed, thereby posing a pricking hazard and hazard of infection. Even if the person administering the shot replaced the needle cover after use, there was always the slight possibility that that person could actually stick himself with the needle while replacing the needle cover.
It is the purpose of this present invention, therefore, to mitigate and/or obviate the above mentioned drawbacks in the manner set forth in the detailed description of the preferred embodiments.
SUMMARY OF THE INVENTION
In one aspect of the present invention, there is f~\
~ ~ .~,, 'I 302821 provided a disposable covered needle assembly and a substantially cylindrical cover housing for use in conjunction with a conventional hypodermic syringe, said needle assembly including a truncated cone, an orifice formed on a wider end of said truncated cone, a circular mount protruding from an outer surface of said truncated cone proximate to said wider end and a needle, catch slots being vertically oriented on a first poriton of said circular mount with slanted surfaces formed therebetween, said slanted surface all slanting in the same circumferential direction, i.e., either counter clockwise or clockwise, said orifice being inwardly tapered to frictionally engage with a discharge nozzle of said hypodermic syringe, said needle being set on an end opposite to said orifice with a needle cover thereon; said cylindrical cover housing slidably and frictionally encompassing said hypodermic syringe, said cylindrical cover housing having inward projections formed on an inner surface thereof proximate to a main opening formed at a first end of said cylindrical cover housing, said main opening having a lip therearound to act as a grip for said cylindrical cover housing, a U-shaped slot being formed around each said inward projection such that each said inward projection is outwardly flexible when said hypodermic syringe is inserted into or retracted from said cylindrical cover housing, said cylindrical cover housing having a circular aperture formed at an end opposite to said inward projections '~' for allowing a narrower end of said needle assembly to pass theretrhough; said inward projections being frictionally fitted into said catch slots before said disposable covered needle assembly is used, said narrower end of said needle assembly being projectable from said circular aperture by pulling said lip towards a stop on a first end of said hypodermic syringe, said narrowr end of said needle assembly being retractable from said circular aperture by pulling said cylindrical cover housing away from said stop so that said inward projections flex to be turnable on said slanted surfaces and to frictionally engage with said catch slots and to totally enclose said needle assembly after use on a patient.
r This invention will become apparent from a careful reading of the detailed description provided hereinafter, with appropriate reference to the attached drawings, showng a preferred embodiment of the present invention.
DESCRIPTION OF THE DRAWINGS
:
Figure 1 is a perspective view of a disposable covered needle assembly and cover housing in accordance with the present invention with the cover housing partially cutaway.
Figure 2 is an elevational view of the disposable covered needle assembly and cover housing of Figure 1 before usage thereof.
Figure 3 is an elevational view of the disposable r~ "' ~302821 covered needle assembly and cover housing of Figure 1 with the needle assembly in projected position with the needle cover removed.
Figure 4 is a perspective view of the disposable covered needle assembly and cover housing of Figure 1 in conjunction with conventional hypodermic syringes with the needle assembly in projected position with the needle cover removed.
DETAILED DESCRIPTION
Referring to Figures 1 - 4, it can be seen that the present invention comprises a disposable covered needle assembly 1 and a substantially cylindrical cover housing 2 for use in conjunction with conventional hypodermic syringes 3.
The needle assemby 1 includes a truncated cone 14, an orifice 11 formed on a wider end of the truncated cone 14, a circular mount 10 protruding from an outer surface of the truncated cone 14 proximate to the wider end and of course a needle 13. The catch slots 12 are vertically oriented on an upper portion of the circular mount 10 with slanted surfaces 16 therebetween. The slanted surfaces 16 all slant in the same circumferential direction, that is, either counter clockwise (CCW) or clockwise (CW). The orifice 11 is inwardly tapered to frictionally engage with a discharge nozzle 33 of the hypodermic syringe 3. A needle 13 is set on the end of the needle assembly opposite to the orifice 11 : f ~
~ 282~
with a needle cover 15 thereon as an added safety feature, as will be explained in more detail later in the specification.
The cylindrical cover housing 2 slidably and frictionally encompasses the hypodermic syringe 3. The cover housing 2 has inward projections 21 on the inner surface thereof proximate to a main opening 23 formed at a frist end of the cylindrical cover housing 2. The main opening 23 has a lip 25 therearound for structural soundness and also to act as a grip for the cover housing 2. A U-shaped slot 24 is formed around each inward projection 21 such that each inward projection 21 is outwardly flexible when the hypodermic syringe 3 i3 inserted into or retracted from the cover housing 2. The cover housing 2 has a circular aperture 22 formed at an end opposite to the inward projections 21 for allowing a narrower end of the needle assembly 1 to pass therethrough. When the lower portion of the needle assembly 1 projects outward from the aperture 22 and the needle cover lS still covers the needle 13 until removed by the person administering the shot. This is an added safety feature preventing any accidental pricking during projection of the needle 13. The cover housing 2 is preferably made of a clear plastic material, such as polystyrene, polycarbonate, etc.
The inward projection 21 has a slanted surface at the upper end thereof to faciliate sliding of the cover housing 2 therealong when the user pulls the cover housing 2 towards the stop 31 of the syringe 3. The lower end of the . ~
` . . .
13028;~1 inward projection 21 is rectangular and square (perpendicular) with respect to the wall of the cover housing 2 (see Figure 1).
The inward projections 21 frictionally fit into the catch slots 12 before the diposable covered needle assembly is used. The narrower end of the needle assembly 1 is projectable from the circular aperture 22 by pulling the lip towards the stop 31 on a first end of the hypodermic syringe 3. The narrower end of the needle assembly 1 is retractable from the circular aperture 22 by pulling the cover housing 2 away from the stop 31 so that the inward projections 21 flex inwards to be turnable on the slanted surface 16 and to frictionally engage with the catch slots 12 and to totally enclose the needle assembly 1 inside of the cover housing 2 for waste disposal after use on a patient.
Of course if the syringe 3 is used to take a blood sample or the like, it should be retained after the cover housing 2 is disposed of. It is notable that when the needle assembly 1 is engaged with the inward projections 21, the orifice 11 is slightly lower than the lip 25 of the cover housing 2, as seen in Figure 2. This arrangement prevents any incidental contact of the orifice which might cause the needle assembly 1 to be dislodged from the cover housing 2.
The catch slots 12 not only allow the inward projections 21 to frictionally fit into and engage therewith, but also allow the user to turn the needle assembly 1 while ,; - 6 -~30Z82~
holding the cover housing 2 for easy removal of the entire assembly from the hypodermic syringe 3.
As various possible emodiments might be made of the above invention without departing from the scope of the invention, it is to be understood that all matter herein described or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.
Thus it will be appreciated that the drawings are exemplary of a preferred embodiment of the invention.
'~
"DISPOSABLE COVERED NEEDLE SAFETY ASSEMBLY"
BACKGROUND OF THE INVENTION
This invention relates to disposable injection devices, and in particular relates to a disposable covered needle assembly which before and after use, completely covers the needle so as to protect all concerned individuals therefrom.
In the past, disposable shots have been available, but none have adequately provided for protection of the person administering the injection, the patient and those handling waste materials. Most disposable shots have provided a plastic needle cover for protecting concerned individuals before usage of the shot. However, once the injection had been administered, often the needle was left exposed, thereby posing a pricking hazard and hazard of infection. Even if the person administering the shot replaced the needle cover after use, there was always the slight possibility that that person could actually stick himself with the needle while replacing the needle cover.
It is the purpose of this present invention, therefore, to mitigate and/or obviate the above mentioned drawbacks in the manner set forth in the detailed description of the preferred embodiments.
SUMMARY OF THE INVENTION
In one aspect of the present invention, there is f~\
~ ~ .~,, 'I 302821 provided a disposable covered needle assembly and a substantially cylindrical cover housing for use in conjunction with a conventional hypodermic syringe, said needle assembly including a truncated cone, an orifice formed on a wider end of said truncated cone, a circular mount protruding from an outer surface of said truncated cone proximate to said wider end and a needle, catch slots being vertically oriented on a first poriton of said circular mount with slanted surfaces formed therebetween, said slanted surface all slanting in the same circumferential direction, i.e., either counter clockwise or clockwise, said orifice being inwardly tapered to frictionally engage with a discharge nozzle of said hypodermic syringe, said needle being set on an end opposite to said orifice with a needle cover thereon; said cylindrical cover housing slidably and frictionally encompassing said hypodermic syringe, said cylindrical cover housing having inward projections formed on an inner surface thereof proximate to a main opening formed at a first end of said cylindrical cover housing, said main opening having a lip therearound to act as a grip for said cylindrical cover housing, a U-shaped slot being formed around each said inward projection such that each said inward projection is outwardly flexible when said hypodermic syringe is inserted into or retracted from said cylindrical cover housing, said cylindrical cover housing having a circular aperture formed at an end opposite to said inward projections '~' for allowing a narrower end of said needle assembly to pass theretrhough; said inward projections being frictionally fitted into said catch slots before said disposable covered needle assembly is used, said narrower end of said needle assembly being projectable from said circular aperture by pulling said lip towards a stop on a first end of said hypodermic syringe, said narrowr end of said needle assembly being retractable from said circular aperture by pulling said cylindrical cover housing away from said stop so that said inward projections flex to be turnable on said slanted surfaces and to frictionally engage with said catch slots and to totally enclose said needle assembly after use on a patient.
r This invention will become apparent from a careful reading of the detailed description provided hereinafter, with appropriate reference to the attached drawings, showng a preferred embodiment of the present invention.
DESCRIPTION OF THE DRAWINGS
:
Figure 1 is a perspective view of a disposable covered needle assembly and cover housing in accordance with the present invention with the cover housing partially cutaway.
Figure 2 is an elevational view of the disposable covered needle assembly and cover housing of Figure 1 before usage thereof.
Figure 3 is an elevational view of the disposable r~ "' ~302821 covered needle assembly and cover housing of Figure 1 with the needle assembly in projected position with the needle cover removed.
Figure 4 is a perspective view of the disposable covered needle assembly and cover housing of Figure 1 in conjunction with conventional hypodermic syringes with the needle assembly in projected position with the needle cover removed.
DETAILED DESCRIPTION
Referring to Figures 1 - 4, it can be seen that the present invention comprises a disposable covered needle assembly 1 and a substantially cylindrical cover housing 2 for use in conjunction with conventional hypodermic syringes 3.
The needle assemby 1 includes a truncated cone 14, an orifice 11 formed on a wider end of the truncated cone 14, a circular mount 10 protruding from an outer surface of the truncated cone 14 proximate to the wider end and of course a needle 13. The catch slots 12 are vertically oriented on an upper portion of the circular mount 10 with slanted surfaces 16 therebetween. The slanted surfaces 16 all slant in the same circumferential direction, that is, either counter clockwise (CCW) or clockwise (CW). The orifice 11 is inwardly tapered to frictionally engage with a discharge nozzle 33 of the hypodermic syringe 3. A needle 13 is set on the end of the needle assembly opposite to the orifice 11 : f ~
~ 282~
with a needle cover 15 thereon as an added safety feature, as will be explained in more detail later in the specification.
The cylindrical cover housing 2 slidably and frictionally encompasses the hypodermic syringe 3. The cover housing 2 has inward projections 21 on the inner surface thereof proximate to a main opening 23 formed at a frist end of the cylindrical cover housing 2. The main opening 23 has a lip 25 therearound for structural soundness and also to act as a grip for the cover housing 2. A U-shaped slot 24 is formed around each inward projection 21 such that each inward projection 21 is outwardly flexible when the hypodermic syringe 3 i3 inserted into or retracted from the cover housing 2. The cover housing 2 has a circular aperture 22 formed at an end opposite to the inward projections 21 for allowing a narrower end of the needle assembly 1 to pass therethrough. When the lower portion of the needle assembly 1 projects outward from the aperture 22 and the needle cover lS still covers the needle 13 until removed by the person administering the shot. This is an added safety feature preventing any accidental pricking during projection of the needle 13. The cover housing 2 is preferably made of a clear plastic material, such as polystyrene, polycarbonate, etc.
The inward projection 21 has a slanted surface at the upper end thereof to faciliate sliding of the cover housing 2 therealong when the user pulls the cover housing 2 towards the stop 31 of the syringe 3. The lower end of the . ~
` . . .
13028;~1 inward projection 21 is rectangular and square (perpendicular) with respect to the wall of the cover housing 2 (see Figure 1).
The inward projections 21 frictionally fit into the catch slots 12 before the diposable covered needle assembly is used. The narrower end of the needle assembly 1 is projectable from the circular aperture 22 by pulling the lip towards the stop 31 on a first end of the hypodermic syringe 3. The narrower end of the needle assembly 1 is retractable from the circular aperture 22 by pulling the cover housing 2 away from the stop 31 so that the inward projections 21 flex inwards to be turnable on the slanted surface 16 and to frictionally engage with the catch slots 12 and to totally enclose the needle assembly 1 inside of the cover housing 2 for waste disposal after use on a patient.
Of course if the syringe 3 is used to take a blood sample or the like, it should be retained after the cover housing 2 is disposed of. It is notable that when the needle assembly 1 is engaged with the inward projections 21, the orifice 11 is slightly lower than the lip 25 of the cover housing 2, as seen in Figure 2. This arrangement prevents any incidental contact of the orifice which might cause the needle assembly 1 to be dislodged from the cover housing 2.
The catch slots 12 not only allow the inward projections 21 to frictionally fit into and engage therewith, but also allow the user to turn the needle assembly 1 while ,; - 6 -~30Z82~
holding the cover housing 2 for easy removal of the entire assembly from the hypodermic syringe 3.
As various possible emodiments might be made of the above invention without departing from the scope of the invention, it is to be understood that all matter herein described or shown in the accompanying drawings is to be interpreted as illustrative and not in a limiting sense.
Thus it will be appreciated that the drawings are exemplary of a preferred embodiment of the invention.
'~
Claims
CLAIMS:
(1) A disposable covered needle assembly and cylindrical cover housing for use in conjunction with a conventional hypodermic syringe, said needle assembly including a truncated cone, an orifice formed on a wider end of said truncated cone, a circular mount protruding from an outer surface of said truncated cone proximate to said wider end and a needle, catch slots being vertically oriented on a first poriton of said circular mount with slanted surfaces formed therebetween, said slanted surface all slanting in the same circumferential direction, i.e., either counter clockwise or clockwise, said orifice being inwardly tapered to frictionally engage with a discharge nozzle of said hypodermic syringe, said needle being set on an end opposite to said orifice with a needle cover thereon; said cylindrical cover housing slidably and frictionally encompassing said hypodermic syringe, said cylindrical cover housing having inward projections formed on an inner surface thereof proximate to a main opening formed at a first end of said cylindrical cover housing, said main opening having a lip therearound to act as a grip for said cylindrical cover housing, a U-shaped slot being formed around each said inward projection such that each said inward projection is outwardly flexible when said hypodermic syringe is inserted into or retracted from said cylindrical cover housing, said cylindrical cover housing having a circular aperture formed at an end opposite to said inward projections for allowing a narrower end of said needle assembly to pass theretrhough:
said inward projections being frictionally fitted into said catch slots before said disposable covered needle assembly is used, said narrower end of said needle assembly being projectable from said circular aperture by pulling said lip towards a stop on a first end of said hypodermic syringe, said narrowr end of said needle assembly being retractable from said circular aperture by pulling said cylindrical cover housing away from said stop so that said inward projections flex to be turnable on said slanted surfaces and to frictionally engage with said catch slots and to totally enclose said needle assembly after use on a patient.
(1) A disposable covered needle assembly and cylindrical cover housing for use in conjunction with a conventional hypodermic syringe, said needle assembly including a truncated cone, an orifice formed on a wider end of said truncated cone, a circular mount protruding from an outer surface of said truncated cone proximate to said wider end and a needle, catch slots being vertically oriented on a first poriton of said circular mount with slanted surfaces formed therebetween, said slanted surface all slanting in the same circumferential direction, i.e., either counter clockwise or clockwise, said orifice being inwardly tapered to frictionally engage with a discharge nozzle of said hypodermic syringe, said needle being set on an end opposite to said orifice with a needle cover thereon; said cylindrical cover housing slidably and frictionally encompassing said hypodermic syringe, said cylindrical cover housing having inward projections formed on an inner surface thereof proximate to a main opening formed at a first end of said cylindrical cover housing, said main opening having a lip therearound to act as a grip for said cylindrical cover housing, a U-shaped slot being formed around each said inward projection such that each said inward projection is outwardly flexible when said hypodermic syringe is inserted into or retracted from said cylindrical cover housing, said cylindrical cover housing having a circular aperture formed at an end opposite to said inward projections for allowing a narrower end of said needle assembly to pass theretrhough:
said inward projections being frictionally fitted into said catch slots before said disposable covered needle assembly is used, said narrower end of said needle assembly being projectable from said circular aperture by pulling said lip towards a stop on a first end of said hypodermic syringe, said narrowr end of said needle assembly being retractable from said circular aperture by pulling said cylindrical cover housing away from said stop so that said inward projections flex to be turnable on said slanted surfaces and to frictionally engage with said catch slots and to totally enclose said needle assembly after use on a patient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 585391 CA1302821C (en) | 1988-12-08 | 1988-12-08 | Disposable covered needle safety assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 585391 CA1302821C (en) | 1988-12-08 | 1988-12-08 | Disposable covered needle safety assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1302821C true CA1302821C (en) | 1992-06-09 |
Family
ID=4139256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 585391 Expired CA1302821C (en) | 1988-12-08 | 1988-12-08 | Disposable covered needle safety assembly |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1302821C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152962A2 (en) * | 2011-05-06 | 2012-11-15 | Fructuoso Francisco | Anti-needlestick guard for hypodermic needles |
-
1988
- 1988-12-08 CA CA 585391 patent/CA1302821C/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012152962A2 (en) * | 2011-05-06 | 2012-11-15 | Fructuoso Francisco | Anti-needlestick guard for hypodermic needles |
| WO2012152962A3 (en) * | 2011-05-06 | 2013-04-04 | Fructuoso Francisco | Anti-needlestick guard for hypodermic needles |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |