WO2005110517A1 - Aiguille retractable - Google Patents

Aiguille retractable Download PDF

Info

Publication number
WO2005110517A1
WO2005110517A1 PCT/CA2005/000801 CA2005000801W WO2005110517A1 WO 2005110517 A1 WO2005110517 A1 WO 2005110517A1 CA 2005000801 W CA2005000801 W CA 2005000801W WO 2005110517 A1 WO2005110517 A1 WO 2005110517A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
housing
slot
longitudinal axis
sliding member
Prior art date
Application number
PCT/CA2005/000801
Other languages
English (en)
Inventor
David Liepert
Amin Kherani
Original Assignee
David Liepert
Amin Kherani
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 David Liepert, Amin Kherani filed Critical David Liepert
Publication of WO2005110517A1 publication Critical patent/WO2005110517A1/fr

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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • 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
    • A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
    • A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
    • A61M2005/3228—Constructional features thereof, e.g. to improve manipulation or functioning the needle being retracted by a member protruding laterally through a slot in the barrel, e.g. double-ended needles

Definitions

  • the present invention relates to a retractable needle.
  • a retractable needle can be used to deliver an anaesthetic block to a particular nerve.
  • the needle is placed in a given body cavity close to the nerves. This can be accomplished either anatomically by advancing into a certain position or via the use of an electrical pulse through the needle that is weak enough to only transmit to the nerve when the needle is in close proximity.
  • the needle To get close to the nerve or nerves to be blocked, the needle must first be advanced through tough, resilient tissue. This requires that the needle have a sharp pointed tip. After the needle has passed through the initial layer of tough resilient tissues, it must then pass though a layer of loose fat, connective of tissue, blood vessels and nerves.
  • a retractable needle When the sliding member is slid in a second direction, the needle is retracted within the syringe body.
  • the retractable needles of Russell et al and Ogle were not developed as Block Needles and, as such, are not particularly suited for block needle applications.
  • What is required is a retractable needle that is better suited to block needle applications and other similar application in which the key concern is tissue damage. According to a first aspect of the invention, there is provided a retractable needle.
  • the retractable needle has an elongated tubular needle housing.
  • the housing a longitudinal axis and a slot.
  • a needle is disposed within the housing.
  • a manually adjustable sliding member engages the slot in the housing. The sliding member is secured to the needle, such that when the sliding member is slid along the slot in a first direction, the needle assumes an extended position extended from the housing and when the sliding member is slid along the slot in a second direction, the needle assumes a retracted position retracted within the housing.
  • the slot has a first end at a first axial position relative to the longitudinal axis, a second end at a second axial position relative to the longitudinal axis. The second end is axially and circumferentially spaced from the first end, and a transition portion that extends around the circumference of the housing at an angle connects the first end and the second end.
  • Beneficial results may be obtained by providing the slot with a first portion at the first end extending transverse to the longitudinal axis, the first portion being adapted to lock the needle in the extended position and a second portion at the second end extending transverse to the longitudinal axis, the second portion being adapted to lock the needle in the retracted position.
  • the housing with an attachment end and a remote end, the needle extending from the remote end, and the attachment end being adapted for connection to a syringe.
  • FIGURE 1 is a side elevation view, in section, of a block needle constructed in accordance with the teachings of the invention
  • FIGURE 2 is a side elevation view, in section of the block needle illustrated in FIGURE 1, with the needle in the extended position
  • FIGURE 3 is a side elevation view, in section, of the block needle illustrated in FIGURE 1, detached f om a syringe in the extended position
  • FIGURE 4 is a side elevation view, in section, of the block needle illustrated in FIGURE 1, detached f om a syringe in the retracted position
  • FIGURE 5 is an end elevation view, in section of the block needle illustrated in
  • FIGURE 1 A first figure.
  • a retractable block needle generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 5.
  • FIGURE 1 there is shown a retractable needle 10, comprising an elongated tubular needle housing 12.
  • Needle housing 12 has a longitudinal axis 14, a slot 16, and a needle 18 disposed within housing 12.
  • the position of needle 18 is controlled by a manually adjustable sliding member 20 that engages slot 16 in housing 12.
  • Sliding member 20 is secured to needle 18, such that, referring to FIGURE 4, when sliding member 20 is slid along slot 16 in a first direction 22, needle 18 assumes an extended position extended from housing 12, and, referring to FIGURE 3, when sliding member 20 is slid along slot 16 in a second direction 24, needle 18 assumes a retracted position retracted within housing 12.
  • slot 16 has a first end 26 at a first axial position 28 relative to longitudinal axis 14, and a second end 30 at a second axial position 32 relative to the longitudinal axis.
  • Second end 30 is axially and circumferentially spaced from first end 26, and a transition portion 34 extends around the circumference of housing 12 at an angle to connect first end 26 and second end 30. While the angled nature of transition portion 34 is not apparent from FIGURE 5, it can be seen in, for example, FIGURE 4.
  • retractable needle 10 is shown not connected to a syringe 11.
  • Slot 16 has a first portion 36 at first end 26 extending transverse to longitudinal axis 14, where first portion 36 is adapted to lock needle 18 in the extended position as shown in FIGURE 4.
  • a second portion 38 at second end 30 extends transverse to longitudinal axis 14, where second portion 38 is adapted to lock needle 18 in the retracted position as shown in FIGURE 3.
  • housing 12 has an attachment end 40 and a remote end 42. Needle 18 extends from remote end 42, or is slightly retracted within, and attachment end 40 is adapted for connection to syringe 11. It will be understood that syringe 11 and block needle 10 could be formed from one body, in which case attachment end 40 would not be required. It will be appreciated that needle 18 can come of varying lengths and sizes.
  • Needle 18 is moved to the extended position shown in FIGURE 2 by locking sliding member 20 into second portion 38.
  • Block needle 10 is then advanced through layers of tissue and fat until the desired location is reached. Once the sharpness of needle 18 is no longer needed to penetrate tissue, or once there is a risk of damaging a vessel, a nerve, or other such areas, needle 18 is retracted into the retracted position shown in FIGURE 1 by locking sliding member 20 in first portion 36. Syringe 11 is then used in the desired application.
  • housing 12 can be of a non-conductive material and needle 18 can be of a conductive material with a power supply for supplying a low amperage current to needle 18. The low amperage current supplied to needle 18 can be used to localize nerves in which it is placed.

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 ensemble aiguille rétractable comprenant un compartiment d'aiguille tubulaire allongé possédant un axe longitudinal et une fente. Une aiguille est disposée dans ce compartiment. Un élément coulissant manuellement réglable entrant en prise avec la fente dans le compartiment est fixé à l'aiguille. Ainsi, lorsque l'élément coulissant coulisse le long de la fente dans un premier sens, l'aiguille entre en position déployée et s'étend à partir du compartiment. Lorsque l'élément coulissant coulisse le long de la fente dans un second sens, l'aiguille entre en position rétractée à l'intérieur du compartiment. La fente comporte une première extrémité au niveau d'une première position axiale par rapport à l'axe longitudinal, une seconde extrémité au niveau d'une seconde position axiale par rapport à l'axe longitudinal, la seconde extrémité étant axialement et circonférentiellement espacée de la première extrémité, ainsi qu'une partie de transition s'étendant autour de la circonférence du compartiment à un angle permettant de raccorder la première extrémité et la seconde extrémité.
PCT/CA2005/000801 2004-05-14 2005-05-16 Aiguille retractable WO2005110517A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA2,470,513 2004-05-14
CA 2470513 CA2470513A1 (fr) 2004-05-14 2004-05-14 Aiguille retractable

Publications (1)

Publication Number Publication Date
WO2005110517A1 true WO2005110517A1 (fr) 2005-11-24

Family

ID=35394004

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2005/000801 WO2005110517A1 (fr) 2004-05-14 2005-05-16 Aiguille retractable

Country Status (2)

Country Link
CA (1) CA2470513A1 (fr)
WO (1) WO2005110517A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727613A (en) * 1970-10-09 1973-04-17 Voys Inc Le Safety catheter placement assembly
US6626868B1 (en) * 1998-10-06 2003-09-30 Dean B. Prestidge Needle apparatus
US6706016B2 (en) * 2000-11-24 2004-03-16 Ckm Diagnostics, Inc. Nerve stimulator output control needle with depth determination capability and method of use
US6726658B2 (en) * 2002-06-18 2004-04-27 Milestone Scientific, Inc. Safety IV catheter infusion device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727613A (en) * 1970-10-09 1973-04-17 Voys Inc Le Safety catheter placement assembly
US6626868B1 (en) * 1998-10-06 2003-09-30 Dean B. Prestidge Needle apparatus
US6706016B2 (en) * 2000-11-24 2004-03-16 Ckm Diagnostics, Inc. Nerve stimulator output control needle with depth determination capability and method of use
US6726658B2 (en) * 2002-06-18 2004-04-27 Milestone Scientific, Inc. Safety IV catheter infusion device

Also Published As

Publication number Publication date
CA2470513A1 (fr) 2005-11-14

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