WO2003066140A1 - Improvements relating to lancets - Google Patents

Improvements relating to lancets Download PDF

Info

Publication number
WO2003066140A1
WO2003066140A1 PCT/GB2003/000473 GB0300473W WO03066140A1 WO 2003066140 A1 WO2003066140 A1 WO 2003066140A1 GB 0300473 W GB0300473 W GB 0300473W WO 03066140 A1 WO03066140 A1 WO 03066140A1
Authority
WO
WIPO (PCT)
Prior art keywords
lancet
insert
plastics
sharp tip
lancet according
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/GB2003/000473
Other languages
English (en)
French (fr)
Inventor
Jeremy Marshall
David Danvers Crossman
Ernest John Mumford
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.)
Owen Mumford Ltd
Original Assignee
Owen Mumford 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 Owen Mumford Ltd filed Critical Owen Mumford Ltd
Priority to EP03737358A priority Critical patent/EP1474193B1/en
Priority to DE60320222T priority patent/DE60320222T2/de
Priority to US10/503,633 priority patent/US8211133B2/en
Priority to JP2003565562A priority patent/JP4361802B2/ja
Publication of WO2003066140A1 publication Critical patent/WO2003066140A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150885—Preventing re-use
    • A61B5/150923—Preventing re-use by means for destroying components or parts, e.g. by cutting or piercing
    • A61B5/150938—Preventing re-use by means for destroying components or parts, e.g. by cutting or piercing by blunting or disabling needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150015—Source of blood
    • A61B5/150022—Source of blood for capillary blood or interstitial fluid
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
    • A61B5/150274—Manufacture or production processes or steps for blood sampling devices
    • A61B5/150282—Manufacture or production processes or steps for blood sampling devices for piercing elements, e.g. blade, lancet, canula, needle
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
    • A61B5/150435—Specific design of proximal end
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150381—Design of piercing elements
    • A61B5/150503—Single-ended needles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150541—Breakable protectors, e.g. caps, shields or sleeves, i.e. protectors separated destructively, e.g. by breaking a connecting area
    • A61B5/150549—Protectors removed by rotational movement, e.g. torsion or screwing
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/15058—Joining techniques used for protective means
    • A61B5/150618—Integrally moulded protectors, e.g. protectors simultaneously moulded together with a further component, e.g. a hub, of the piercing element
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/150007—Details
    • A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
    • A61B5/150534—Design of protective means for piercing elements for preventing accidental needle sticks, e.g. shields, caps, protectors, axially extensible sleeves, pivotable protective sleeves
    • A61B5/150694—Procedure for removing protection means at the time of piercing
    • A61B5/150717—Procedure for removing protection means at the time of piercing manually removed
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/15—Devices for taking samples of blood
    • A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
    • A61B5/15101—Details
    • A61B5/15115—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
    • A61B5/15117—Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids comprising biased elements, resilient elements or a spring, e.g. a helical spring, leaf spring, or elastic strap

Definitions

  • the conventional construction of such a lancet is a steel needle encased almost entirely in an elongate plastics body but with its sharp tip projecting from one end.
  • the plastics body eases handling and can be shaped to be guided by a compatible firing device and to locate one end of a spring which shoots the lancet forwards when released.
  • a lancet for skin pricking comprising an elongate plastics body with a plastics insert at one end providing a sharp tip projecting from that end, the plastics material of the insert being a liquid crystal polymer.
  • Such a liquid crystal polymer when melted, has extremely low viscosity and can flow almost like water. It can therefore penetrate fully into the part of a mould cavity which will form the needle tip. Moreover its strength when set in the direction of flow is very high. Therefore the insert emerges from the mould with the tip sharp and ready for use.
  • Liquid crystal polymers are expensive, and so the body of the lancet will be of less costly material and polyethylene can continue to be used.
  • the body and the insert can be formed together in a single process by twin-shot moulding.
  • the body is generally tubular, the insert plugging one end.
  • This enables the spring of a firing device to enter the other, open end of the body and to act directly on the insert, the body then serving primarily as guide member. Because the spring would not then act on the rear end of the body, this could enable the firing device to be more compact than existing ones.
  • a further advantage of the all-plastics construction is that such lancets will be easier to dispose of completely by incineration: there will be no steel needles to melt down or burn away.
  • Figure 1 is a side view of an all-plastics lancet of the invention
  • Figure 2 is a side view at 90° to that of Figure 1 ;
  • Figure 3 is a cross-section through the lancet shown in Figure 1.
  • the lancet has a generally tubular body 1 with four evenly spaced external longitudinal fins 2. Two opposed ones are interrupted at their mid- length by apertures 3 through the body 1 , left as part of the moulding process.
  • a hollow insert 4 with a closed end plugs one end of the body 1 , and it has a co-axial projection 5 forming a sharp tip proud of that end of the body.
  • the insert 4 is moulded first, then the body 1 is moulded over the insert 4 during a twin-shot moulding process, forming a twist-off cap 6 which provides a sterile shield surrounding and protecting the needle tip 5.
  • the body is formed from a low cost relatively soft material such as polyethylene, whilst the insert is formed from a liquid crystal polymer.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • General Health & Medical Sciences (AREA)
  • Hematology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Physics & Mathematics (AREA)
  • Public Health (AREA)
  • Manufacturing & Machinery (AREA)
  • Dermatology (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Small-Scale Networks (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Window Of Vehicle (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Materials For Medical Uses (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
PCT/GB2003/000473 2002-02-05 2003-02-05 Improvements relating to lancets Ceased WO2003066140A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP03737358A EP1474193B1 (en) 2002-02-05 2003-02-05 Improvements relating to lancets
DE60320222T DE60320222T2 (de) 2002-02-05 2003-02-05 Lanzetten betreffende verbesserungen
US10/503,633 US8211133B2 (en) 2002-02-05 2003-02-05 Lancets
JP2003565562A JP4361802B2 (ja) 2002-02-05 2003-02-05 ランセット（外科用針）

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0202603.7 2002-02-05
GBGB0202603.7A GB0202603D0 (en) 2002-02-05 2002-02-05 Improvements relating to Lancets

Publications (1)

Publication Number Publication Date
WO2003066140A1 true WO2003066140A1 (en) 2003-08-14

Family

ID=9930402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2003/000473 Ceased WO2003066140A1 (en) 2002-02-05 2003-02-05 Improvements relating to lancets

Country Status (7)

Country Link
US (1) US8211133B2 (cg-RX-API-DMAC7.html)
EP (1) EP1474193B1 (cg-RX-API-DMAC7.html)
JP (1) JP4361802B2 (cg-RX-API-DMAC7.html)
AT (1) ATE391522T1 (cg-RX-API-DMAC7.html)
DE (1) DE60320222T2 (cg-RX-API-DMAC7.html)
GB (1) GB0202603D0 (cg-RX-API-DMAC7.html)
WO (1) WO2003066140A1 (cg-RX-API-DMAC7.html)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013066261A1 (en) * 2011-11-02 2013-05-10 Chee Yen Lim Surgically invasive pointed articles for skin penetration and methods for their preparation
WO2014070103A1 (en) * 2012-11-05 2014-05-08 Chee Yen Lim Plastic blood lancet
CN109009162A (zh) * 2018-07-30 2018-12-18 佛山科学技术学院 一种一次性安全采血针

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DE60239132D1 (de) 2001-06-12 2011-03-24 Pelikan Technologies Inc Gerät zur erhöhung der erfolgsrate im hinblick auf die durch einen fingerstich erhaltene blutausbeute
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Publication number Priority date Publication date Assignee Title
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FR2595237A1 (fr) * 1986-03-07 1987-09-11 Salaun Christian Aiguille obtenue en une seule piece d'une matiere synthetique et destinee a provoquer l'apparition d'une goutte de sang
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013066261A1 (en) * 2011-11-02 2013-05-10 Chee Yen Lim Surgically invasive pointed articles for skin penetration and methods for their preparation
CN103997965A (zh) * 2011-11-02 2014-08-20 林治远 用于皮肤穿透的外科侵入式尖头制品及其用于其制备的方法
WO2014070103A1 (en) * 2012-11-05 2014-05-08 Chee Yen Lim Plastic blood lancet
US10271781B2 (en) 2012-11-05 2019-04-30 Chee Yen Lim Plastic blood Lancet
CN109009162A (zh) * 2018-07-30 2018-12-18 佛山科学技术学院 一种一次性安全采血针
CN109009162B (zh) * 2018-07-30 2023-08-08 佛山科学技术学院 一种一次性安全采血针

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US20050119681A1 (en) 2005-06-02
JP4361802B2 (ja) 2009-11-11
DE60320222D1 (de) 2008-05-21
JP2005516690A (ja) 2005-06-09
US8211133B2 (en) 2012-07-03
GB0202603D0 (en) 2002-03-20
ATE391522T1 (de) 2008-04-15
EP1474193A1 (en) 2004-11-10
EP1474193B1 (en) 2008-04-09
DE60320222T2 (de) 2009-05-20

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