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WO1998010816A1 - Canule de securite - Google Patents

Canule de securite Download PDF

Info

Publication number
WO1998010816A1
WO1998010816A1 PCT/AU1997/000600 AU9700600W WO9810816A1 WO 1998010816 A1 WO1998010816 A1 WO 1998010816A1 AU 9700600 W AU9700600 W AU 9700600W WO 9810816 A1 WO9810816 A1 WO 9810816A1
Authority
WO
WIPO (PCT)
Prior art keywords
sleeve
hub
cannula
needle
projections
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.)
Ceased
Application number
PCT/AU1997/000600
Other languages
English (en)
Inventor
Jennifer Druce
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SPRINGBARRON Pty Ltd
Original Assignee
SPRINGBARRON Pty Ltd
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
Application filed by SPRINGBARRON Pty Ltd filed Critical SPRINGBARRON Pty Ltd
Priority to AU41057/97A priority Critical patent/AU4105797A/en
Publication of WO1998010816A1 publication Critical patent/WO1998010816A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
    • 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
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/06—Body-piercing guide needles or the like
    • A61M25/0612—Devices for protecting the needle; Devices to help insertion of the needle, e.g. wings or holders
    • 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
    • A61M5/3243—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel
    • A61M5/3271—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position
    • A61M5/3272—Means for protection against accidental injuries by used needles being axially-extensible, e.g. protective sleeves coaxially slidable on the syringe barrel with guiding tracks for controlled sliding of needle protective sleeve from needle exposing to needle covering position having projections following labyrinth paths

Definitions

  • This invention relates to a cannula for medical use, and m particular, to a cannula which provides for a reduced possibility of needlestick injury during or following its use.
  • the invention has particular application to a cannula when fitted to a hypodermic syringe and is hereinafter described in this context. However, it will be understood that the invention does have broader application, for example to a cannula for use in conjunction with a catheter or infusion set.
  • a cannula which comprises (le, includes) : (a) a hollow body (hereinafter referred to as a "hub") which in use is connected with a hypodermic needle or with a medical instrument that carries a hypodermic needle, and
  • the hub and the sleeve preferably are provided with integrally formed latching elements which mterengage when the sleeve is in the first position, which can be disengaged when the sleeve is in the first position, which provide for longitudinal movement of the sleeve relative to the hub from the first to the second position, and which positively mterengage to prevent further movement of the sleeve relative to the hub when the sleeve has been moved from the first position to the second position.
  • the latching elements are preferably arranged so that they are disengaged by rotating the sleeve relative to the hub when the sleeve is in the first position.
  • the hypodermic needle may be connected directly with the hub but, m order to provide greater flexibility, the hub preferably is arranged to be connected indirectly to the needle. In the latter case the hypodermic needle will be formed with a coupling portion for connecting the needle to the hub.
  • the hub preferably is arrange to connect directly to the spigot of a conventional syringe body.
  • the cannula may be provided to adapt an otherwise conventional hypodermic syringe to achieve the features of the present invention.
  • a cap preferably is provided to cover the needle portion of the cannula in each of its possible forms.
  • the latching elements of the invention preferably are formed as interengaging projections and grooves.
  • the hub is formed with integrally moulded radial projections that engage within groove-like flutes within the sleeve.
  • the sleeve normally is prevented from rotating relative to the hub by engagement of one projection in one of the grooves, and rotation of the sleeve preferably is effected by moving the projection from its accommodating groove to another groove whilst, at the same time, elastically deforming a portion of the hub and/or the sleeve.
  • Figure 1 shows a side view of the complete hypodermic syringe assembly incorporating a cannula and a needle protecting cap
  • Figure 2 shows an exploded perspective view components of the syringe assembly shown in Figure 1
  • Figure 3 shows a perspective partial view of conjoined portions of the complete syringe
  • Figure 4 shows a perspective view of a sleeve portion of the cannula
  • Figure 5 shows a plan view of the upper end of the sleeve as illustrated in Figure 4,
  • Figure 6 shows a perspective view of a hub portion of the cannula
  • Figure 7 shows a plan view of the upper end of the hub as shown in Figure 6
  • Figure 8 shows a sectional elevation view of the syringe assembly with the cannula in a first position - ' - surrounding the body of the syringe
  • Figure 9 shows a view which is similar to that in Figure 8 but with the sleeve in a second position surrounding the cannula needle
  • Figure 10 shows a diagrammatic representation of the interior of the sleeve when in a developed (open) condition and shows also the interrelationship of the sleeve with the hub when the sleeve is in the first position
  • Figure 10 shows a diagrammatic representation of the interior of the sleeve when in a developed (open) condition and shows also the interrelationship of the sleeve with the hub when the sleeve is in the first position
  • Figure 11 is a view similar to that shown in Figure 10 but with the sleeve and hub portions shown m the second position.
  • the complete assembly comprises a syringe 20 having a body portion 21, a plunger 22 and a hypodermic needle 23.
  • the body portion 21 is formed integrally with a pair of lugs 24 at its upper end and with a spigot 25 at its lower end.
  • the plunger 22 is provided for drawing and expelling fluid into and from the syringe body portion 21 and through the hypodermic needle 23 m the usual way.
  • the hypodermic needle 23 includes a hollow needle portion 26 and a coupling portion 27.
  • the coupling portion 27 includes a socket 28 and a spigot portion 29.
  • the socket 28 is normally fitted m f ⁇ ctional engagement with the spigot 25.
  • a cap 30 is provided optionally for covering the needle portion 26 and is shaped and sized to engage frictionally with the spigot 29 of the coupling portion 27.
  • a hollow hub 31 and a sleeve 32 are provided as accessories to the syringe assembly; although, as previously indicated, the hub 31 might actually be formed integrally with or as the coupling portion 27 of the hypodermic needle 23.
  • the hub 31 includes an upper socket portion 33 which is shaped and sized to receive the spigot 25 of the syringe body.
  • the hub 31 is formed at its lower end with a spigot 34 which is shaped and sized to receive the socket portion 28 of the coupling 27.
  • the hub 31 is interposed between the syringe body 21 and the hypodermic needle 23. In that position, the hub 31 is employed to carry the sleeve 32.
  • the sleeve 32 is a neat sliding fit over the hub 31 and is moveable longitudinally between first and second positions that are shown respectively in Figures 8 and 9. Finger grips 35 are provided on the outer surface of the sleeve 32 to facilitate rotational and longitudinal movement of the sleeve.
  • the syringe assembly Prior to use, the syringe assembly would normally be provided in the form shown in Figure 1. That is, with the sleeve 32 located in the first position and the cap 30 covering the hypodermic needle 23.
  • the cap 30 When making the assembly ready for use, the cap 30 is removed and the sleeve 32 is maintained in the first position, as shown in Figure 8. Then, following use of the syringe, involving injection of a patient, the sleeve 32 is moved longitudinally from the first position shown m Figure 8 to the second position as shown in Figure 9, so that the entire hypodermic needle is covered and the possibility of needlestick injury is obviated.
  • the hub 31 and the sleeve 32 are provided with interengaging latching elements in the form of projections and groove-like flutes for the purpose of holding the sleeve 32 in the first and second positions relative to the hub.
  • latching elements are described as follows with particular reference to Figures 5 to 7, 10 and 11 of the drawings .
  • the hub 31 is formed with a first pair of diametrically opposed radial projections 56a and b which have downwardly facing ramp surfaces. Also, the hub is formed with a second pair of diametrically opposed radial projections 57a and b which have downwardly facing ramp surfaces. Furthermore, the hub 31 is formed with a third pair of diametrically opposed radial projections 58a and b which have upwardly facing ramp surfaces. Finally, the hub is formed with a pair of diametrically opposed radial projections 59a and b in the form of lugs that have rounded peripheral surfaces.
  • the sleeve 32 For receiving the hub projections 56a ⁇ and b to 59a and b, the sleeve 32 is formed internally with a series of groove-like flutes, four pairs of which open to the upper end of the sleeve and two pairs of which have blind ends.
  • the sleeve 32 is formed with a first pair of diametrically opposed flutes 60a and b which are arranged to receive the first pair of hub projections 56a and b when the sleeve 32 is first assembled to the hub and is moved into the first position, as indicated in Figures 8 and 10.
  • the sleeve is formed also with a second pair of diametrically opposed flutes 61a and b.
  • the flutes 61a and b are separated from the flutes 60a and b respectively by a wall 62 but are joined at their lower ends by a bridging channel 63.
  • the flutes 61a and b are intended to receive the hub projections 56a and b when the sleeve is being moved from its first position to its second position, as shown in Figures 9 and 11.
  • the sleeve 32 is also formed with a third pair of diametrically opposed flutes 64a and b, these flutes being wider than the others and being intended to accommodate both of the opposed pairs of projections 57a, b and 59a, b of the hub when the sleeve is being assembled to the hub.
  • a rib 65 is located toward the lower end of the flutes 64a and b and is positioned to trap the projections 57a. and b when the sleeve is pushed into the first position as indicated in Figure 10.
  • the lug-form projections 59a and b bear against a dividing wall 66 which separates the grooves 64a and b from a fourth pair of diametrically opposed flutes 67a and b.
  • a fifth pair of diametrically opposed flutes 68a and b are formed within the sleeve 32 and are intended to receive the hub projections 58a and b when the sleeve is first assembled to the hub.
  • the flutes 68a and b are separated from a sixth pair of diametrically opposed flutes 69a and b by a dividing wall 70.
  • the flutes 69a and b are blind but they are indicated by reference 69a in Figures 4, 10 and 11.
  • the flutes 68a and b are intended to receive the hub projections 58a. and b respectively when the sleeve 32 is first assembled to the hub 31.
  • a connecting channel 71 is provided toward the lower end of the flutes 68a, b and 69a, b to permit lateral translation of the hub projections 58a and b.
  • a ledge 72 is positioned in each of the flutes 69a and b, toward the upper end of the flutes.
  • the ledge 72 provides for interfering engagement between the hub projections 58a and b when the sleeve is moved into the second position (as shown m Figures 9 and 11) relative to the hub.
  • the sleeve 32 When the sleeve 32 is assembled to the hub and located m the first position as indicated m Figure 10, the sleeve may be moved from the first to the second position (as indicated in Figure 11) by first rotating the sleeve about the hub, as indicated by the arrow that is designated by numeral 73 in Figure 10. Rotation of the sleeve relative to the hub will be resisted by the lug-form projections 59a and b engaging with the wall 66 of the sleeve. However, the resistance may be overcome by forcing rotation and affecting elastic deformation of the hub and/or the sleeve, so that a positive feel will be obtained as the lug-form projections 59a. and b move into the grooves 67a and b.
  • the sleeve may be moved from the first position (as indicated in Figure 10) to the second position

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

La présente invention concerne une canule de sécurité conçue pour être placée sur une seringue hypodermique, un cathéter ou un appareil médical similaire. La canule comprend un moyeu creux (31) qui est relié à une aiguille hypodermique (23) et un manchon (32) qui est placé autour du moyeu (31). Le manchon peut coulisser dans le sens longitudinal entre une première position dans laquelle il expose l'aiguille (23) et une deuxième position dans laquelle il entoure l'aiguille (23). Le moyeu (31) et le manchon (32) sont équipés d'éléments d'attache intégralement constitués de parties saillantes (56 à 58) sur le moyeu (31) et de cannelures en forme de rainures (60, 61, 64, 67, 68 et 69) ménagées dans le manchon (32). Les éléments d'attache s'emboîtent les uns dans les autres quand le manchon (32) est dans la première position et peuvent être dégagés quand le manchon (32) est dans la première position. De même, les éléments d'attache permettent un mouvement longitudinal du manchon (32) par rapport au moyeu (31) de la première vers la deuxième position et permettent un emboîtement mutuel empêchant un mouvement plus avancé du manchon (32) par rapport au moyeu (31) quand le manchon (32) a été déplacé de la première position à la deuxième position.
PCT/AU1997/000600 1996-09-12 1997-09-12 Canule de securite Ceased WO1998010816A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41057/97A AU4105797A (en) 1996-09-12 1997-09-12 A safety cannula

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPO2273A AUPO227396A0 (en) 1996-09-12 1996-09-12 A needle covering syringe attachment
AUPO2273 1996-09-12

Publications (1)

Publication Number Publication Date
WO1998010816A1 true WO1998010816A1 (fr) 1998-03-19

Family

ID=3796586

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1997/000600 Ceased WO1998010816A1 (fr) 1996-09-12 1997-09-12 Canule de securite

Country Status (2)

Country Link
AU (1) AUPO227396A0 (fr)
WO (1) WO1998010816A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6190361B1 (en) 2000-04-18 2001-02-20 Gettig Technologies, Inc. Selectively lockable needle guard
US6254575B1 (en) 1999-11-04 2001-07-03 Specialized Health Products Reaccessible medical needle safety devices and methods
US6280420B1 (en) 1999-11-04 2001-08-28 Specialized Health Products Reaccessible medical needle safety devices and methods
WO2004041332A1 (fr) * 2002-11-04 2004-05-21 Sergio Restelli Ensemble de composants servant a transformer une seringue en une seringue de securite automatique jetable et seringue de securite automatique jetable correspondante
US6949086B2 (en) 1999-11-04 2005-09-27 Tyco Healthcare Group Lp Seldinger safety shield for medical needles
US7029461B2 (en) 1999-11-04 2006-04-18 Tyco Healthcare Group Lp Safety shield for medical needles
US7144389B2 (en) 2001-03-14 2006-12-05 Tyco Healthcare Group, Lp Safety shield for medical needles
WO2007026163A1 (fr) * 2005-09-01 2007-03-08 Owen Mumford Limited Ensemble de coiffe d’aiguille
EP1776980A1 (fr) * 2005-10-19 2007-04-25 Animas Corporation Set d'infusion de sécurité
WO2007099367A1 (fr) * 2006-02-28 2007-09-07 Owen Mumford Ltd Aiguille avec coiffe
US7300423B2 (en) 2003-02-14 2007-11-27 Tyco Healthcare Group Lp Safety device with trigger mechanism
US7320682B2 (en) 1999-11-18 2008-01-22 Tyco Healthcare Group Lp Safety device
US7361159B2 (en) 2001-03-02 2008-04-22 Covidien Ag Passive safety shield
US7553296B2 (en) 2003-02-14 2009-06-30 Tyco Healthcare Group Lp Safety device with trigger mechanism
CN101287512B (zh) * 2005-09-01 2011-12-07 欧文蒙福德有限公司 针罩组件
US8172809B2 (en) 1999-11-04 2012-05-08 Tyco Healthcare Group Lp Safety shield apparatus and mounting structure for use with medical needle devices

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299287A1 (fr) * 1987-07-15 1989-01-18 George W. Poncy Seringue hypodermique sans risque de piqûre
US5088988A (en) * 1988-06-28 1992-02-18 Sherwood Medical Company Combined dental syringe and needle shield
US5106379A (en) * 1991-04-09 1992-04-21 Leap E Jack Syringe shielding assembly
WO1993000122A1 (fr) * 1991-06-28 1993-01-07 Inter-Metallic, Inc. Aiguille medicale de securite et procede
US5254100A (en) * 1991-06-06 1993-10-19 Huband Michael L Protective needle assembly for hypodermic syringe
EP0573947A1 (fr) * 1992-06-12 1993-12-15 Becton, Dickinson and Company Dispositif médical avec manchon de protection d'aiguille verrouillable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0299287A1 (fr) * 1987-07-15 1989-01-18 George W. Poncy Seringue hypodermique sans risque de piqûre
US5088988A (en) * 1988-06-28 1992-02-18 Sherwood Medical Company Combined dental syringe and needle shield
US5106379A (en) * 1991-04-09 1992-04-21 Leap E Jack Syringe shielding assembly
US5254100A (en) * 1991-06-06 1993-10-19 Huband Michael L Protective needle assembly for hypodermic syringe
WO1993000122A1 (fr) * 1991-06-28 1993-01-07 Inter-Metallic, Inc. Aiguille medicale de securite et procede
EP0573947A1 (fr) * 1992-06-12 1993-12-15 Becton, Dickinson and Company Dispositif médical avec manchon de protection d'aiguille verrouillable

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6254575B1 (en) 1999-11-04 2001-07-03 Specialized Health Products Reaccessible medical needle safety devices and methods
US6280420B1 (en) 1999-11-04 2001-08-28 Specialized Health Products Reaccessible medical needle safety devices and methods
US6949086B2 (en) 1999-11-04 2005-09-27 Tyco Healthcare Group Lp Seldinger safety shield for medical needles
US7029461B2 (en) 1999-11-04 2006-04-18 Tyco Healthcare Group Lp Safety shield for medical needles
US8226617B2 (en) 1999-11-04 2012-07-24 Tyco Healthcare Group Lp Safety shield apparatus and mounting structure for use with medical needle devices
US7198618B2 (en) 1999-11-04 2007-04-03 Tyco Healthcare Group Lp Safety shield for medical needles
US8172809B2 (en) 1999-11-04 2012-05-08 Tyco Healthcare Group Lp Safety shield apparatus and mounting structure for use with medical needle devices
US7320682B2 (en) 1999-11-18 2008-01-22 Tyco Healthcare Group Lp Safety device
US6190361B1 (en) 2000-04-18 2001-02-20 Gettig Technologies, Inc. Selectively lockable needle guard
US7438703B2 (en) 2000-12-08 2008-10-21 Tyco Healthcare Group Lp Safety shield for medical needles
US7361159B2 (en) 2001-03-02 2008-04-22 Covidien Ag Passive safety shield
US7144389B2 (en) 2001-03-14 2006-12-05 Tyco Healthcare Group, Lp Safety shield for medical needles
WO2004041332A1 (fr) * 2002-11-04 2004-05-21 Sergio Restelli Ensemble de composants servant a transformer une seringue en une seringue de securite automatique jetable et seringue de securite automatique jetable correspondante
US7300423B2 (en) 2003-02-14 2007-11-27 Tyco Healthcare Group Lp Safety device with trigger mechanism
US7553296B2 (en) 2003-02-14 2009-06-30 Tyco Healthcare Group Lp Safety device with trigger mechanism
JP2009506815A (ja) * 2005-09-01 2009-02-19 オウエン マンフォード リミティド 注射針のシュラウドアセンブリ
CN101287512B (zh) * 2005-09-01 2011-12-07 欧文蒙福德有限公司 针罩组件
WO2007026163A1 (fr) * 2005-09-01 2007-03-08 Owen Mumford Limited Ensemble de coiffe d’aiguille
EP1776980A1 (fr) * 2005-10-19 2007-04-25 Animas Corporation Set d'infusion de sécurité
WO2007099367A1 (fr) * 2006-02-28 2007-09-07 Owen Mumford Ltd Aiguille avec coiffe

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Publication number Publication date
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