CA2087362A1 - Needle sheath with protective guard - Google Patents
Needle sheath with protective guardInfo
- Publication number
- CA2087362A1 CA2087362A1 CA 2087362 CA2087362A CA2087362A1 CA 2087362 A1 CA2087362 A1 CA 2087362A1 CA 2087362 CA2087362 CA 2087362 CA 2087362 A CA2087362 A CA 2087362A CA 2087362 A1 CA2087362 A1 CA 2087362A1
- Authority
- CA
- Canada
- Prior art keywords
- needle
- sheath
- tube
- assembly
- flange
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/3213—Caps placed axially onto the needle, e.g. equipped with finger protection guards
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/002—Packages specially adapted therefor, e.g. for syringes or needles, kits for diabetics
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
ABSTRACT
A sheath for a hypodermic needle assembly comprising a tube having an open needle receiving end, a gripping portion spaced from the needle receiving end and a flange secured to the sheath between the open needle receiving end and the gripping portion.
A sheath for a hypodermic needle assembly comprising a tube having an open needle receiving end, a gripping portion spaced from the needle receiving end and a flange secured to the sheath between the open needle receiving end and the gripping portion.
Description
NEEDLE SHEATH WITH PROTECTIVE GUARD
FIELD OF THE_INVENTION
The present invention relates to hypodermic needles for syringes and to sheaths therefor.
BACKGROUND OF THE INVENT _ In recent years the risk of infection with serious diseases through the use of hypodermic needles has become a major concern for those who handle such appliances. Medical and dental practitioners, for example, are at risk of infection through an accidental prick with a used needle.
To address this problem, a number of devices have been proposed for holding the sheaths of disposable needles, while protecting the hand of the user as a used needle is reinserted into the sheath for disposal. Some of these devices are bulky and awkward to use and have not found favour for that reason. All such devices are additional appliances that are intended to be reused. Consequently, when using such a protective device, it is necessary that it be sterilized, normally by autoclaving, after each use.
Consequently, because of the nuisance factor involved in the use of these devices, they are not always employed.
It is an object of the present ir.vention to provide the desired protection integrally with a needle sheath.
FIELD OF THE_INVENTION
The present invention relates to hypodermic needles for syringes and to sheaths therefor.
BACKGROUND OF THE INVENT _ In recent years the risk of infection with serious diseases through the use of hypodermic needles has become a major concern for those who handle such appliances. Medical and dental practitioners, for example, are at risk of infection through an accidental prick with a used needle.
To address this problem, a number of devices have been proposed for holding the sheaths of disposable needles, while protecting the hand of the user as a used needle is reinserted into the sheath for disposal. Some of these devices are bulky and awkward to use and have not found favour for that reason. All such devices are additional appliances that are intended to be reused. Consequently, when using such a protective device, it is necessary that it be sterilized, normally by autoclaving, after each use.
Consequently, because of the nuisance factor involved in the use of these devices, they are not always employed.
It is an object of the present ir.vention to provide the desired protection integrally with a needle sheath.
2~73~i2 SUMMARY OF THE INVENTION
According to one aspect of the present invention there is provided a sheath for a hypodeI~nic needle assembly comprising a tube having an open needle~ receiving end, a gripping portion spaced from the needle receiving end and a flange secured to the sheath between the open needle receiving end and the gripping portion.
According to another aspect of the present invention there is provided a hypodermic needle and sheath assembly comprising:
a tube having an open end;
a cap engaging over the open end of the tube;
a needle assembly including a needle projecting into the tube and a body held in the open end of the tube; and a flange surrounding the tube.
The protective flange is therefore unitary with the disposable sheath and will provide protection every time a needle is used without the requirement for an additional device. The entire sheath and needle assembly is disposable, so that the protective device need not be sterilized for reuse.
~ BRIEF DESCRIPTION OF THE DRAWINGS
- In the accompanying drawings which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view of a needle and sheath ` ~ ` ` ' `: ~: ` ` .
`
','` ` ' : ' ' ' ` ' assembly according to the present invention;
Figure 2 is a side elevation of the assembly of Figure l;
Figure 3 is a side elevation of the assembly with the cap removed;
Figure 4 is a longitudinal cross section of the assembly; and Figure 5 is an end view of the sheath from the needle receiving end thereof.
DETAILED DESCRIPTION
~ .
Referring to the accompanying drawings there is illustrated a needle and sheath assembly 10 that includes a sheath 12 and a cap 14. These house a needle assembly 16 that is most clearly ill~strated in Figure 4.
The needle assembly includes a needle body 18 in the form of a cap with a bore 20 at the outer end and threads 22 on the inside of the bore. The threads 22 are used to engage the end of a conventional syringe. A needle 24 extends through the body in the conventional way.
The sheath 12 of the needle and sheath assembly includes a tube 26 with a closed end 28 and an open, needle reGeiving end 30. At the needle receiving end the tube is formed into a sleeve 32 that engages the needle body 18 and holds it in place with the end of the needle 24 projecting into the tube. Adjacent the sleeve 32 is a ring of ribs 34 20~73fi2 that surrounds the tube to provide stiffness at this point.
A further series of ribs 36 extend the 'ength of the tube, between the ribs 34 and the closed end 2~. These serve both to stiffen this end of the tube and also allow the firm gripping of the tube so that it can be twisted off the needle body 18 when the body is screwed onto a syringe.
Surrounding the sheath between the gripping portion carrying the ribs 36 and the ribs 34 is a circular flange 38 concentric with the tube. The flange has a peripheral edge 40 carrying a lip 42 projecting towards the cap 14, that is away from the gripping portion of the tube 26. The lip serves to inhibit a needle engaging the flange from sliding off the flange and accidently pricking the user.
The cap 14 includes a tube 44 with a closed end 46 and an open end 48. Adjacent the open end, the tube forms a ~leeve 50 for engagement over the sleeve 32 of the sheath 12.
With the cap installed, the needle assembly 16 is completely enclosed by the sheath and the cap. A series of ribs 52 extend along the tube 44 and serves for stiffening and gripping purposes.
The needle and sheath assembly are used in the same way as the conventional disposable needle and sheath assembly. That is, the cap 14 is removed from the assembly so that the needle may be screwed onto the end of a syringe.
Once that has been accomplished, the sheath may be removed and the needle used as desired. On completion of its use, 2V87.':~fi2 the needle 24 is reinserted into the tube 26 and the needle body 18 is engaged in the sleeve 32. During this process, the sheath is gripped from the gripping end behind the flange 38, which thus protects the hand of the user. Once the needle body 18 has been inserted in the sleeve 32, the needle may be unscrewed from a syringe and the cap reinstalled to completely enclose the used needle for disposal.
While one embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. It is, for example, possible to relocate the flange 38 on the tube 26 provided its location is sufficient to provide the necessary guarding function and provided that it does not interfere with any other necessary function of the needle and sheath assembly. It is therefore to be understood that the invention is to be considered limited solely by the scope of the appended claims.
According to one aspect of the present invention there is provided a sheath for a hypodeI~nic needle assembly comprising a tube having an open needle~ receiving end, a gripping portion spaced from the needle receiving end and a flange secured to the sheath between the open needle receiving end and the gripping portion.
According to another aspect of the present invention there is provided a hypodermic needle and sheath assembly comprising:
a tube having an open end;
a cap engaging over the open end of the tube;
a needle assembly including a needle projecting into the tube and a body held in the open end of the tube; and a flange surrounding the tube.
The protective flange is therefore unitary with the disposable sheath and will provide protection every time a needle is used without the requirement for an additional device. The entire sheath and needle assembly is disposable, so that the protective device need not be sterilized for reuse.
~ BRIEF DESCRIPTION OF THE DRAWINGS
- In the accompanying drawings which illustrate an exemplary embodiment of the present invention:
Figure 1 is an isometric view of a needle and sheath ` ~ ` ` ' `: ~: ` ` .
`
','` ` ' : ' ' ' ` ' assembly according to the present invention;
Figure 2 is a side elevation of the assembly of Figure l;
Figure 3 is a side elevation of the assembly with the cap removed;
Figure 4 is a longitudinal cross section of the assembly; and Figure 5 is an end view of the sheath from the needle receiving end thereof.
DETAILED DESCRIPTION
~ .
Referring to the accompanying drawings there is illustrated a needle and sheath assembly 10 that includes a sheath 12 and a cap 14. These house a needle assembly 16 that is most clearly ill~strated in Figure 4.
The needle assembly includes a needle body 18 in the form of a cap with a bore 20 at the outer end and threads 22 on the inside of the bore. The threads 22 are used to engage the end of a conventional syringe. A needle 24 extends through the body in the conventional way.
The sheath 12 of the needle and sheath assembly includes a tube 26 with a closed end 28 and an open, needle reGeiving end 30. At the needle receiving end the tube is formed into a sleeve 32 that engages the needle body 18 and holds it in place with the end of the needle 24 projecting into the tube. Adjacent the sleeve 32 is a ring of ribs 34 20~73fi2 that surrounds the tube to provide stiffness at this point.
A further series of ribs 36 extend the 'ength of the tube, between the ribs 34 and the closed end 2~. These serve both to stiffen this end of the tube and also allow the firm gripping of the tube so that it can be twisted off the needle body 18 when the body is screwed onto a syringe.
Surrounding the sheath between the gripping portion carrying the ribs 36 and the ribs 34 is a circular flange 38 concentric with the tube. The flange has a peripheral edge 40 carrying a lip 42 projecting towards the cap 14, that is away from the gripping portion of the tube 26. The lip serves to inhibit a needle engaging the flange from sliding off the flange and accidently pricking the user.
The cap 14 includes a tube 44 with a closed end 46 and an open end 48. Adjacent the open end, the tube forms a ~leeve 50 for engagement over the sleeve 32 of the sheath 12.
With the cap installed, the needle assembly 16 is completely enclosed by the sheath and the cap. A series of ribs 52 extend along the tube 44 and serves for stiffening and gripping purposes.
The needle and sheath assembly are used in the same way as the conventional disposable needle and sheath assembly. That is, the cap 14 is removed from the assembly so that the needle may be screwed onto the end of a syringe.
Once that has been accomplished, the sheath may be removed and the needle used as desired. On completion of its use, 2V87.':~fi2 the needle 24 is reinserted into the tube 26 and the needle body 18 is engaged in the sleeve 32. During this process, the sheath is gripped from the gripping end behind the flange 38, which thus protects the hand of the user. Once the needle body 18 has been inserted in the sleeve 32, the needle may be unscrewed from a syringe and the cap reinstalled to completely enclose the used needle for disposal.
While one embodiment of the present invention has been described in the foregoing, it is to be understood that other embodiments are possible within the scope of the invention. It is, for example, possible to relocate the flange 38 on the tube 26 provided its location is sufficient to provide the necessary guarding function and provided that it does not interfere with any other necessary function of the needle and sheath assembly. It is therefore to be understood that the invention is to be considered limited solely by the scope of the appended claims.
Claims (8)
1. A sheath for a hypodermic needle assembly comprising a tube having an open needle receiving end, a gripping portion spaced from the needle receiving end and a flange secured to the sheath between the open needle receiving end and the gripping portion.
2. A sheath according to claim 1 wherein the flange is space from the needle receiving end.
3. A sheath according to claim 2 wherein the flange comprises a peripheral lip projecting away from the gripping portion.
4. A sheath according to claim 1 wherein the needle receiving end comprises means for engaging a body of the hypodermic needle assembly for retaining the needle assembly in the sheath.
5. A sheath according to claim 1 wherein the sheath further comprises a cap for engagement with the open needle receiving end of the tube for closing the needle receiving end and cooperating with the tube to enclose the needle assembly.
6. A hypodermic needle and sheath assembly comprising:
a tube having an open end;
a cap engaging over the open end of the tube;
a needle assembly including a needle projecting into the tube and a body held in the open end of the tube; and a flange surrounding the tube.
a tube having an open end;
a cap engaging over the open end of the tube;
a needle assembly including a needle projecting into the tube and a body held in the open end of the tube; and a flange surrounding the tube.
7. An assembly according to claim 6 wherein the flange is adjacent the open end of the tube.
8. An assembly according to claim 6 wherein the flange comprises a peripheral lip projecting from the flange towards the cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2087362 CA2087362A1 (en) | 1993-01-15 | 1993-01-15 | Needle sheath with protective guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2087362 CA2087362A1 (en) | 1993-01-15 | 1993-01-15 | Needle sheath with protective guard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2087362A1 true CA2087362A1 (en) | 1994-07-16 |
Family
ID=4150989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2087362 Abandoned CA2087362A1 (en) | 1993-01-15 | 1993-01-15 | Needle sheath with protective guard |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2087362A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10918802B2 (en) | 2018-12-14 | 2021-02-16 | A To Z Technologies, Llc | Needle exchange system |
-
1993
- 1993-01-15 CA CA 2087362 patent/CA2087362A1/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10918802B2 (en) | 2018-12-14 | 2021-02-16 | A To Z Technologies, Llc | Needle exchange system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |