[go: up one dir, main page]

WO1994009840A1 - Dispositif de protection pour une aiguille - Google Patents

Dispositif de protection pour une aiguille Download PDF

Info

Publication number
WO1994009840A1
WO1994009840A1 PCT/AU1993/000543 AU9300543W WO9409840A1 WO 1994009840 A1 WO1994009840 A1 WO 1994009840A1 AU 9300543 W AU9300543 W AU 9300543W WO 9409840 A1 WO9409840 A1 WO 9409840A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheath
arrangement
shank
elastomeric tube
boss
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/AU1993/000543
Other languages
English (en)
Inventor
Luigi Luke Pisaniello
Marcel Paul Stephan
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU53312/94A priority Critical patent/AU5331294A/en
Publication of WO1994009840A1 publication Critical patent/WO1994009840A1/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
    • A61M5/326—Fully automatic sleeve extension, i.e. in which triggering of the sleeve does not require a deliberate action by the user

Definitions

  • This invention relates to a medical sharps protection arrangement to protect against injury by medical sharp equipment, a typical example being a hypodermic needle.
  • Medical sharp instruments such as hypodermic needles, catheters or scalpels are designed so as to minimise the resistance to their penetration through material whether it be human skin, tissue or plastic caps on bottles. As such, they are inherently very sharp, and pose a safety hazard due to accidental penetration.
  • a used medical sharp such as a hypodermic needle adds the extra element of danger by virtue of the numerous blood-borne diseases that could be transmitted by accidental penetration.
  • the invention is said to reside in a medical sharp protection arrangement, the medical sharp being of a type having a shank, a tip at one end of the shank and a boss at the other end, the protection arrangement comprising a sheath slidable along the shank and adapted to cover at least the tip of the sharp, a resilient means to bias the sheath to the tip covering position, and an engagement means to prevent the sheath from sliding along the shank unless the sheath is in a selected angular position with respect to the shank.
  • the resilient means is mounted to and acts between the boss and the sheath.
  • the engagement means comprises a keyhole slot along at least part of the length of the sheath and a corresponding key associated with the shank.
  • the key associated with the shank is mounted to the boss and extends along the shank.
  • the resilient means is a cylindrical elastomeric tube mounted at one end to the boss and at its other end to the sheath.
  • sheath extends along about half of the length of the shank.
  • the resilient means is an elongate elastomeric tube having a closed end, the sheath being fitted into the closed end, the tip of the sharp being adapted to pierce the closed end in use. This allows the determination of whether the medical sharp has been used by simple visual examination of the closed end.
  • At least a portion of the elastomeric tube is corrugated thereby assisting with provision of rotational as well as longitudinal resiliency.
  • the corrugations of the elastomeric tube are spiral corrugations.
  • the elastomeric tube is perforated thereby enabling any air within the elastometric tube to escape when the tube is handled.
  • the elastomeric tube is transparent enabling visual inspection of the medical sharp.
  • FIG. 1 is a part cross-sectional side view of the arrangement with the resilient means retracted
  • FIG.2 is a part cross-sectional side view of the arrangement with the resilient means in position ready for retraction
  • FIG.3 is a part cross-sectional side view of the protection arrangement with the resilient means in the engaged position whereby retraction is no longer possible
  • FIG 4 shows a part cross-sectional side view of the shank and engagement means formed and extending from the boss and a view from the sharpened first end of the shank
  • FIG.5 shows a part cross-sectional side view of the shank cap with end view from both ends of the cap.
  • FIG.6 is a cross-sectional view on the line 6,6' of Figure 4,
  • FIG 7 is a cross-sectional view on the line 7,7' of Figure 5.
  • FIG. 8 is a cross-sectional view on the line 8,8' of Figure 5.
  • a hyperdermic needle 1 is of the type comprising a hollow shank 2 having a first sharpened end 3 for piercing inter alia skin of a patient, and including at a second end a boss 4 for securing the needle to a syringe (not shown).
  • the shank of the needle has an elongate key 5 extending longitudinally along the part of the shank 2, and which stops some way short of the sharpened end or tip of the needle.
  • the sheath 6 includes a generally cylindrical and centrally positioned bore 7 of proportions that allow a sliding along the shank.
  • the bore 7 includes a longitudinal slot 8 which is complementary in shape to the key 5 of the shank as can be seen by comparing Figures 6 and 7 which show respectively the key 5 associated with the shank 2 and the longitudinal slot or keyway 8 in the sheath 6.
  • the key 5 takes the form of an elongate member extending along the shank and spaced slightly apart from the shank.
  • the key could be formed from the same material that the boss is made of and that is generally of plastics material. Alternatively the key 5 may be fastened to the shank 2.
  • a elastomeric tube 10 closed at one end is positioned over the sheath with the closed end positioned over the tip of the sheath.
  • the cover is formed of an elastomeric material such as rubber and is positioned close to the shank. The cover engages both the cap and an upper portion of the shank of the needle, and such engagement may be a frictional engagement by reason of the elastomeric material being stretched over the tip of the sheath and the shank.
  • the needle In use then the needle is provided in a sterile package. On removal from the package the needle is fitted over the mouth of the syringe by frictionally fitting the boss over the syringe.
  • the sheath is twisted from a locked position as seen in Fig 3 to an engaged position as seen in Fig 2, so as to align the key of the shank with the keyhole slot of the sheath, and then the sheath is slid along the length of the shank to expose the tip of the needle. In doing so the sharpened end of the medical sharp pierces the rubber cover.
  • the sheath is released, and returns to its protecting position, by reason of the spring action provided by the elastomeric cover.
  • the sheath will return automatically to the neutral locked position.
  • the elastomeric cover will ensure that the sheath will also twist back into the locked position.
  • the twisting is assisted by the elastometric cover being of a spiralling corrugated finish which acts to provide both a rotational and longitudinal resiliency and keeps the untwisted sheath in a stable position. In additon the corrugations act to improve the handling and grip of the sheath.

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

L'invention concerne un dispositif de protection pour un instrument médical pointu permettant de minimiser le risque d'une blessure accidentelle par des instruments médicaux pointus tels que des aiguilles hypodermiques. Le dispositif consiste en un étui (6) couvert par un matériau élastomère (10) couvrant l'aiguille (2). L'étui (6) ne peut venir dans une position de retrait par rapport à l'aiguille (2) en mettant l'extrémité pointue (3) de l'aiguille à nu que lorsque l'étui (6) et le corps de l'aiguille (2) sont alignés dans une position angulaire relative particulière qui n'est pas la position de repos normale. Pour réaliser ceci, l'étui doit être tourné et la force élastique et longitudinale du matériau élastomère doit être surmontée. Ceci est une étape active, où l'aiguille peut être mise à nu uniquement par deux actions indépendantes. Lorsque la protection en élastomère est relâchée, l'étui retourne dans sa position de repos dans laquelle il ne peut pas être mis à nu sans qu'on lui applique une force de rotation. L'extrémité pointue de l'aiguille est ainsi couverte, ce qui empêche l'utilisateur de se blesser.
PCT/AU1993/000543 1992-10-27 1993-10-25 Dispositif de protection pour une aiguille Ceased WO1994009840A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53312/94A AU5331294A (en) 1992-10-27 1993-10-25 Needle protection arrangement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPL551692 1992-10-27
AUPL5516 1992-10-27

Publications (1)

Publication Number Publication Date
WO1994009840A1 true WO1994009840A1 (fr) 1994-05-11

Family

ID=3776500

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1993/000543 Ceased WO1994009840A1 (fr) 1992-10-27 1993-10-25 Dispositif de protection pour une aiguille

Country Status (2)

Country Link
AU (1) AU5331294A (fr)
WO (1) WO1994009840A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478326A (en) * 1992-12-10 1995-12-26 Shiu; Man F. Arterial device for control of bleeding from a puncture in an artery wall
WO2000025845A1 (fr) * 1998-11-04 2000-05-11 Prajendra Pandurang Choudhary Ensemble aiguille

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8140687A (en) * 1986-11-19 1988-05-26 Sterimatic Holdings Limited Improvements in or relating to injection devices
FR2634651A1 (fr) * 1988-07-29 1990-02-02 Bacci Louis Procedes et dispositifs pour la protection contre les contaminations dus aux instruments chirurgicaux et aux aiguilles a injecter
US4911693A (en) * 1988-10-17 1990-03-27 Paris Frassetti R Hypodermic syringe needle guard
WO1990003815A1 (fr) * 1988-10-05 1990-04-19 Sterimatic Holdings Limited Protection d'aiguille medicale
EP0413872A1 (fr) * 1989-08-23 1991-02-27 Jack Boisson-Müller Etui de protection destiné à l'usage des aiguilles et des seringues
US5049136A (en) * 1990-01-10 1991-09-17 Johnson Gerald W Hypodermic needle with protective sheath
US5098401A (en) * 1991-01-04 1992-03-24 Lange Andries G De Disposable automatic needle cover assembly with safety lock
AU1036992A (en) * 1991-01-22 1992-07-30 Stewart, John Protective device for a needle

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU8140687A (en) * 1986-11-19 1988-05-26 Sterimatic Holdings Limited Improvements in or relating to injection devices
FR2634651A1 (fr) * 1988-07-29 1990-02-02 Bacci Louis Procedes et dispositifs pour la protection contre les contaminations dus aux instruments chirurgicaux et aux aiguilles a injecter
WO1990003815A1 (fr) * 1988-10-05 1990-04-19 Sterimatic Holdings Limited Protection d'aiguille medicale
US4911693A (en) * 1988-10-17 1990-03-27 Paris Frassetti R Hypodermic syringe needle guard
EP0413872A1 (fr) * 1989-08-23 1991-02-27 Jack Boisson-Müller Etui de protection destiné à l'usage des aiguilles et des seringues
US5049136A (en) * 1990-01-10 1991-09-17 Johnson Gerald W Hypodermic needle with protective sheath
US5098401A (en) * 1991-01-04 1992-03-24 Lange Andries G De Disposable automatic needle cover assembly with safety lock
AU1036992A (en) * 1991-01-22 1992-07-30 Stewart, John Protective device for a needle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5478326A (en) * 1992-12-10 1995-12-26 Shiu; Man F. Arterial device for control of bleeding from a puncture in an artery wall
WO2000025845A1 (fr) * 1998-11-04 2000-05-11 Prajendra Pandurang Choudhary Ensemble aiguille
US6689107B1 (en) 1998-11-04 2004-02-10 Prajenda Pandurang Choudhary Needle assembly

Also Published As

Publication number Publication date
AU5331294A (en) 1994-05-24

Similar Documents

Publication Publication Date Title
EP0216460B1 (fr) Dispositif de sécurité pour une aiguille hypodermique ou similaire
US5584816A (en) Hardpack shield for a pivoting needle guard
US4790828A (en) Self-capping needle assembly
US6936036B2 (en) Blood collection agency
US7674242B2 (en) Intradermal needle
US5207653A (en) Safety needle and cap combination device
US6017329A (en) Hypodermic needle guard and method to prevent needle stick injuries
US4927415A (en) Apparatus for safe use and disposal of needles
US5219339A (en) Single use medical needle
EP1231958B1 (fr) Dispositifs de sécurité pour aiguille médicale réaccessible
US5256153A (en) Hypodermic needle guard and method to prevent needle stick injuries
US4747835A (en) Safety device for hypodermic needles
US7001364B1 (en) Needle safety cap device
US5401251A (en) Safe cap covered injection system
US5106380A (en) Syringes
IE914533A1 (en) Syringe with protective housing
US4932946A (en) Hub-mounted, slit-elastic needle guard
WO1985003006A1 (fr) Gaine d'aiguille de seringue et bouclier
US4880413A (en) Sharp instrument protection means
JP2002345955A (ja) 安全キャップ付注射針
US5458577A (en) Composite syringe
WO2007047328A1 (fr) Ensemble de poutres blindables contenant des charnieres de contrainte reduite et procedes de fabrication
GB2321014A (en) Hypodermic needle with retractable needle guard
JPH09510135A (ja) 保護された針を有する採血ユニット及び採血のための方法
US5626230A (en) Sharps kit for percutaneous catheterization

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AT AU BB BG BR BY CA CH CZ DE DK ES FI GB HU JP KP KR KZ LK LU LV MG MN MW NL NO NZ PL PT RO RU SD SE SK UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

NENP Non-entry into the national phase

Ref country code: CA