WO2000013727A1 - Sheath for the needle of a hypodermic syringe - Google Patents

Sheath for the needle of a hypodermic syringe Download PDF

Info

Publication number
WO2000013727A1
WO2000013727A1 PCT/GB1999/002175 GB9902175W WO0013727A1 WO 2000013727 A1 WO2000013727 A1 WO 2000013727A1 GB 9902175 W GB9902175 W GB 9902175W WO 0013727 A1 WO0013727 A1 WO 0013727A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
syringe
needle
sheath according
guard
Prior art date
Application number
PCT/GB1999/002175
Other languages
French (fr)
Other versions
WO2000013727A9 (en
Inventor
John Campbell
John Targell
Original Assignee
Nmt Group Plc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from GBGB9819217.2A external-priority patent/GB9819217D0/en
Priority claimed from GBGB9907274.6A external-priority patent/GB9907274D0/en
Application filed by Nmt Group Plc filed Critical Nmt Group Plc
Priority to AU46376/99A priority Critical patent/AU4637699A/en
Publication of WO2000013727A1 publication Critical patent/WO2000013727A1/en
Priority to US09/563,268 priority patent/US6524278B1/en
Priority to US10/349,378 priority patent/US6958055B2/en
Publication of WO2000013727A9 publication Critical patent/WO2000013727A9/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2096—Combination of a vial and a syringe for transferring or mixing their contents
    • 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
    • A61M5/3202—Devices for protection of the needle before use, e.g. caps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J1/00—Containers specially adapted for medical or pharmaceutical purposes
    • A61J1/14—Details; Accessories therefor
    • A61J1/20—Arrangements for transferring or mixing fluids, e.g. from vial to syringe
    • A61J1/2003—Accessories used in combination with means for transfer or mixing of fluids, e.g. for activating fluid flow, separating fluids, filtering fluid or venting
    • A61J1/2006—Piercing means
    • A61J1/201—Piercing means having one piercing end

Definitions

  • This invention concerns a sheath for the needle of a hypodermic syringe.
  • Hypodermic syringe assemblies are usually provided with a protective sheath covering the needle for its protection until the syringe is required for use.
  • a sheath which sealably connects over the needle of a hypodermic syringe and which is capable of penetrating the rubber cap of a vial and which has apertures therein to enable the passage of liquid to its interior for extraction by the needle of the syringe.
  • the sheath may have a pointed end.
  • the sheath may have at least one aperture through its wall above the pointed end.
  • the sheath may have an aperture at its pointed end.
  • the sheath may be protected before use by a removable guard.
  • the guard may be in the form of a part cylindrical wall.
  • the guard may be integral with the sheath and removable at a frangible connection.
  • the sheath may be attached to the syringe by a simple push-on/pull-off friction fit.
  • the sheath may be attached to the syringe by a threaded connection.
  • the sheath may be attached to the syringe by a bayonet connection.
  • the sheath may be formed from a plastics material.
  • Figure 1 shows a cross-section through the sheath
  • Figure 2 shows a cross-section through the sheath of Figure 1 in position over the needle of a hypodermic syringe
  • FIG 3 shows a perspective view of the sheath of Figures 1 and 2.
  • the sheath generally indicated at 10 and which is formed from a plastics material has a socket 11 at its rear end which engages the end cap E of a hypodermic syringe having a needle N, barrel B and plunger P with a push-on/pull-off friction fit.
  • An annular seal 12 is provided on the end of the sheath 10 which abuts the forward face of an annular flange F at the rearward end of the cap E.
  • the sheath 10 has a hollow interior 14 which accommodates the needle N of the syringe.
  • the sheath 10 has a pointed forward end 15 capable of penetrating the rubber cap of a vial or being inserted into an ampoule whose cap has been broken therefrom.
  • a guard 17 in the form of a part cylindrical wall is formed integrally with the sheath 10 and is removable from the sheath at a frangible connection 18.
  • the guard protects the sheath and prevents its pointed end from damaging and thereby compromising the sterility of primary packaging in which the syringe is supplied.
  • the slot 19 in the wall enables the guard to be broken away without damaging the sheath which passes through the slot 19 during this operation.
  • the syringe In use, the syringe is removed from its primary packaging and the barrel B of the syringe filled in known manner after insertion of the forward end of the sheath through the rubber cap of a vial or insertion of the forward end into an ampoule whose cap has been broken therefrom, by retraction of the plunger P. The sheath 10 is then removed and discarded to enable administration of the injection in known manner.
  • the pointed end of the sheath may have a single forwardly facing aperture instead of the radial apertures described above.
  • the guard may comprise a complete cylindrical wall, though more care is then required in its removal.

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

There is disclosed a sheath (10) which sealably connects over the needle (N) of a hypodermic syringe and which is capable of penetrating the rubber cap of a vial and which has apertures (16) therein to enable the passage of liquid to its interior for extraction by the needle of the syringe.

Description

SHEATH FORTHE NEEDLE OF AHYPODERMIC SYRINGE
This invention concerns a sheath for the needle of a hypodermic syringe.
Hypodermic syringe assemblies are usually provided with a protective sheath covering the needle for its protection until the syringe is required for use.
It is a common, though by no means universal, practice to change the needle of a syringe after filling and before administration of the injection because of a perception that the original needle may become blunted, bent or subjected to loss of needle lubricant during the filling operation, for example by insertion through the rubber cap of the vial, contaminated with a foreign substance, for example latex from such a cap or rendered unsterile.
It is an object of the invention to provide means eliminating any need for the changing of needles as aforesaid.
According to the present invention, there is provided a sheath which sealably connects over the needle of a hypodermic syringe and which is capable of penetrating the rubber cap of a vial and which has apertures therein to enable the passage of liquid to its interior for extraction by the needle of the syringe.
The sheath may have a pointed end.
The sheath may have at least one aperture through its wall above the pointed end.
The sheath may have an aperture at its pointed end. The sheath may be protected before use by a removable guard.
The guard may be in the form of a part cylindrical wall.
The guard may be integral with the sheath and removable at a frangible connection.
The sheath may be attached to the syringe by a simple push-on/pull-off friction fit.
The sheath may be attached to the syringe by a threaded connection.
The sheath may be attached to the syringe by a bayonet connection.
The sheath may be formed from a plastics material.
The invention will be further apparent from the following description with reference to the several figures of the accompanying drawing which show, by way of example only, one form of sheath embodying same.
Of the drawing:-
Figure 1 shows a cross-section through the sheath;
Figure 2 shows a cross-section through the sheath of Figure 1 in position over the needle of a hypodermic syringe; and
Figure 3 shows a perspective view of the sheath of Figures 1 and 2. Referring now to the drawing, it will be seen that the sheath generally indicated at 10 and which is formed from a plastics material has a socket 11 at its rear end which engages the end cap E of a hypodermic syringe having a needle N, barrel B and plunger P with a push-on/pull-off friction fit. An annular seal 12 is provided on the end of the sheath 10 which abuts the forward face of an annular flange F at the rearward end of the cap E.
The sheath 10 has a hollow interior 14 which accommodates the needle N of the syringe.
The sheath 10 has a pointed forward end 15 capable of penetrating the rubber cap of a vial or being inserted into an ampoule whose cap has been broken therefrom.
Behind the end 15 are a pair of diametrically opposed radial apertures 16.
A guard 17 in the form of a part cylindrical wall is formed integrally with the sheath 10 and is removable from the sheath at a frangible connection 18. The guard protects the sheath and prevents its pointed end from damaging and thereby compromising the sterility of primary packaging in which the syringe is supplied. The slot 19 in the wall enables the guard to be broken away without damaging the sheath which passes through the slot 19 during this operation.
In use, the syringe is removed from its primary packaging and the barrel B of the syringe filled in known manner after insertion of the forward end of the sheath through the rubber cap of a vial or insertion of the forward end into an ampoule whose cap has been broken therefrom, by retraction of the plunger P. The sheath 10 is then removed and discarded to enable administration of the injection in known manner.
It sometimes happens that medical staff use a filling needle of larger bore than the injection needle for the purposes of filling the syringe - particularly when the bore of the injection needle is particularly fine. The possibility of removing the sheath 10 and original needle before replacing the sheath 10 and using it as a filling needle should not be overlooked.
It will be appreciated that it is not intended to limit the invention to the above example only, many variations, such as might readily occur to one skilled in the art, being possible, without departing from the scope thereof.
Thus, for example, the pointed end of the sheath may have a single forwardly facing aperture instead of the radial apertures described above.
Again, for example, the guard may comprise a complete cylindrical wall, though more care is then required in its removal.

Claims

1. A sheath which sealably connects over the needle of a hypodermic syringe and which is capable of penetrating the rubber cap of a vial and which has apertures therein to enable the passage of liquid to its interior for extraction by the needle of the syringe.
2. A sheath according to claim 1 having a pointed end.
3. A sheath according to claim 2 having at least one aperture through its wall above the pointed end.
4. A sheath according to claim 2 having an aperture at its pointed end.
5. A sheath according to any preceding claim which is protected before use by a removable guard.
6. A sheath according to claim 5 wherein the guard is in the form of a party cylindrical wall.
7. A sheath according to claim 5 or claim 6 wherein the guard is integral with the sheath and removable at a frangible connection.
8. A sheath according to any preceding claim which is attached to the syringe by a simple push-on/pull-off friction fit.
9. A sheath according to any one of claims 1-7 which is attached to the syringe by a threaded connection.
10. A sheath according to any one of claims 1-7 which is attached to the syringe by a bayonet connection.
11. A sheath according to any preceding claim formed from a plastics material.
PCT/GB1999/002175 1998-09-04 1999-07-07 Sheath for the needle of a hypodermic syringe WO2000013727A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU46376/99A AU4637699A (en) 1998-09-04 1999-07-07 Sheath for the needle of a hypodermic syringe
US09/563,268 US6524278B1 (en) 1998-09-04 2000-05-03 Needle sheath
US10/349,378 US6958055B2 (en) 1998-09-04 2003-01-20 Retractable needle syringe including a sheath and an intravenous adapter

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GBGB9819217.2A GB9819217D0 (en) 1998-09-04 1998-09-04 Sheath for the needle of a hypodermic syringe
GB9819217.2 1998-09-04
GB9907274.6 1999-03-31
GBGB9907274.6A GB9907274D0 (en) 1999-03-31 1999-03-31 Sheath for the needle of a hypodermic syringe

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/563,268 Continuation US6524278B1 (en) 1998-09-04 2000-05-03 Needle sheath

Publications (2)

Publication Number Publication Date
WO2000013727A1 true WO2000013727A1 (en) 2000-03-16
WO2000013727A9 WO2000013727A9 (en) 2005-03-17

Family

ID=26314315

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1999/002175 WO2000013727A1 (en) 1998-09-04 1999-07-07 Sheath for the needle of a hypodermic syringe

Country Status (4)

Country Link
AR (1) AR020387A1 (en)
AU (1) AU4637699A (en)
ID (1) ID23720A (en)
WO (1) WO2000013727A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359754A (en) * 2000-03-03 2001-09-05 Nmt Group Plc Needle sheath
US9526846B2 (en) 2009-08-19 2016-12-27 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US9993632B2 (en) 2013-09-19 2018-06-12 Gamolin Limited Connection for syringe for IV bag injection

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201611A1 (en) * 1985-05-10 1986-11-20 B. Braun-SSC AG Two cannulae syringe
EP0427861A1 (en) * 1989-05-16 1991-05-22 Poltavsky Meditsinsky Stomatologichesky Institut Injection needle in individual sterile envelope and a single-use syringe with such needle
US5364387A (en) * 1993-08-02 1994-11-15 Becton, Dickinson And Company Drug access assembly for vials and ampules
US5584819A (en) * 1995-03-13 1996-12-17 Kopfer; Rudolph J. Nested blunt/sharp injection assembly
EP0820778A1 (en) * 1996-07-22 1998-01-28 Becton, Dickinson and Company Syringe filling and delivery device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0201611A1 (en) * 1985-05-10 1986-11-20 B. Braun-SSC AG Two cannulae syringe
EP0427861A1 (en) * 1989-05-16 1991-05-22 Poltavsky Meditsinsky Stomatologichesky Institut Injection needle in individual sterile envelope and a single-use syringe with such needle
US5364387A (en) * 1993-08-02 1994-11-15 Becton, Dickinson And Company Drug access assembly for vials and ampules
US5584819A (en) * 1995-03-13 1996-12-17 Kopfer; Rudolph J. Nested blunt/sharp injection assembly
EP0820778A1 (en) * 1996-07-22 1998-01-28 Becton, Dickinson and Company Syringe filling and delivery device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2359754A (en) * 2000-03-03 2001-09-05 Nmt Group Plc Needle sheath
GB2359754B (en) * 2000-03-03 2004-04-28 Nmt Group Plc Needle sheath
US9526846B2 (en) 2009-08-19 2016-12-27 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US10314985B2 (en) 2009-08-19 2019-06-11 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US11400234B2 (en) 2009-08-19 2022-08-02 Safety Syringes, Inc. Patient-contact activated needle stick safety device
US9993632B2 (en) 2013-09-19 2018-06-12 Gamolin Limited Connection for syringe for IV bag injection

Also Published As

Publication number Publication date
AR020387A1 (en) 2002-05-08
AU4637699A (en) 2000-03-27
ID23720A (en) 2000-05-11
WO2000013727A9 (en) 2005-03-17

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