CA2429594A1 - Blood removal system - Google Patents

Blood removal system Download PDF

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Publication number
CA2429594A1
CA2429594A1 CA002429594A CA2429594A CA2429594A1 CA 2429594 A1 CA2429594 A1 CA 2429594A1 CA 002429594 A CA002429594 A CA 002429594A CA 2429594 A CA2429594 A CA 2429594A CA 2429594 A1 CA2429594 A1 CA 2429594A1
Authority
CA
Canada
Prior art keywords
drive
lancet
drive rotor
removal system
cocking
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.)
Granted
Application number
CA002429594A
Other languages
French (fr)
Other versions
CA2429594C (en
Inventor
Hans List
Peter Ruschke
Bruno Robert Thoes
Hans Kintzig
Michael Schabbach
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.)
F Hoffmann La Roche AG
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 CA2708807A priority Critical patent/CA2708807C/en
Publication of CA2429594A1 publication Critical patent/CA2429594A1/en
Application granted granted Critical
Publication of CA2429594C publication Critical patent/CA2429594C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A61B5/151—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
    • 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
    • A61B5/150259—Improved gripping, e.g. with high friction pattern or projections on the housing surface or an ergonometric shape
    • 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
    • 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
    • A61B5/150801—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming
    • A61B5/150824—Means for facilitating use, e.g. by people with impaired vision; means for indicating when used correctly or incorrectly; means for alarming by visual feedback
    • 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
    • A61B5/15103—Piercing procedure
    • A61B5/15107—Piercing being assisted by a triggering mechanism
    • A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
    • 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
    • A61B5/15146—Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means.
    • A61B5/15148—Constructional features of stocking means, e.g. strip, roll, disc, cartridge, belt or tube
    • A61B5/15149—Arrangement of piercing elements relative to each other
    • A61B5/15151—Each piercing element being stocked in a separate isolated compartment
    • 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
    • A61B5/15146—Devices loaded with multiple lancets simultaneously, e.g. for serial firing without reloading, for example by use of stocking means.
    • A61B5/15148—Constructional features of stocking means, e.g. strip, roll, disc, cartridge, belt or tube
    • A61B5/15157—Geometry of stocking means or arrangement of piercing elements therein
    • 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
    • A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
    • A61B5/15188—Constructional features of reusable driving devices
    • A61B5/1519—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for propelling the piercing unit
    • 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
    • A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
    • A61B5/15188—Constructional features of reusable driving devices
    • A61B5/15192—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing
    • A61B5/15194—Constructional features of reusable driving devices comprising driving means, e.g. a spring, for retracting the lancet unit into the driving device housing fully automatically retracted, i.e. the retraction does not require a deliberate action by the user, e.g. by terminating the contact with the patient's skin

Abstract

Blood removal system for removing blood for diagnostic purposes. It includes a housing (6), a lancet guide (10), and a lancet drive (12) with a drive spring (22). The lancet drive comprises a cocking device (23), in order to tension the drive spring (22), a drive rotor (24) that is driven by the drive spring (22), and an output-side coupling mechanism (25), by means of which the rotational movement of the drive rotor (24) is converted into the puncturing movement.

Multiple functional improvements are achieved by a design in which the end of the drive spring (22) facing away from the drive rotor (24) is connected to a rotationally moveable cocking element (33). The cocking element (33) is rotatable in the same direction of rotation, in which the drive rotor (24) rotates during the driving phase for tensioning the drive spring (22) while rotation of the drive rotor (24) is inhibited. The cocking element (33) is arrested during the driving phase against a reverse rotation, so that the drive rotor (24), after release of the stoppage, performs a rotational movement, which, by means of the output-side coupling mechanism, is converted into the puncturing movement of the lancet.

Claims (13)

1. Blood removal system for removing blood for diagnostic purposes, including a housing (6) with an exit opening (15) for the tip (14) of a lancet (3), which is moveable in the housing (6) along a predetermined puncture path, a lancet guide (10), by which the lancet (3) is guided on the predetermined puncture path, and a lancet drive (12) with a drive spring (22), a cocking device (23) for tensioning the drive spring (22) in a cocking phase of the lancet drive (12), a drive rotor (24) which is driven by the drive spring (22) and which is rotatable about an axis (A), and an output-side coupling mechanism (25) for converting the rotational movement of the drive rotor (24) in a drive phase of the lancet drive (12) into a puncture movement wherein the lancet (3) is moved with high speed in a puncture direction (13) until the tip (14) of the lancet (3) exits out of the exit opening (15), in order to produce a wound, characterized in that an end of the drive spring (22) that faces away from the drive rotor (24) is connected to a rotationally moveable cocking element (33), the cocking element (33) is, with inhibited rotation of the drive rotor (24), rotatable for tensioning of the drive spring (22) in a same direction of rotation (R) in which the drive rotor (24) rotates during a driving phase, and the cocking element (33) is arrested during the drive phase against a reverse rotation, so that the drive rotor (24), after release of the rotation inhibition, performs a rotational movement which is converted by means of the output-side coupling mechanism into the puncturing movement of the lancet.
2. Blood removal system according to claim 1, charac-terized in that the axis of rotation of the cocking element (33) runs parallel, preferably, coaxial to the axis of rotation (R) of the drive rotor (24).
3. Blood removable system according to any one of the preceding claims, characterized in that the cocking element (33) is coupled with a rotatable actuation element (40).
4. Blood removal system according to any one of claims 1 or 2, characterized in that the cocking element (33) is coupled by a rotary/sliding transmission with a translatory movable actuation element (36).
5. Blood removal system according to any one of claims 1 or 2, characterized in that the axis of rotation (C) of the cocking element (33) runs transverse to a direction of movement of a translatory moveable actuation element (36).
6. Blood removal system according to claim 5, charac-terized in that the actuation element (36) operates by means of a gear rod (57) on a pinion gear (58) that is coupled with the cocking element (33) during the cocking movement.
7. Blood removal system according to claim 6, charac-terized in that the pinion gear, the rotatably moveable cocking element (33) and the drive rotor (24) are components of a drive module (55) in which they are rotatable about a common axis (C).
8. Blood removal system according to any one of the preceding claims, characterized in that an angle of rotation range of the drive rotor includes a preparation angle of rotation range (51) and a puncture angle of rotation range (52), wherein the rotational movement of the drive rotor in the preparation angle of rotation range (51) is slower than in the puncture angle of rotation range (51), and the rotational movement of the drive rotor (24) is inhibited at the transition between the preparation angle of rotation range (51) and the puncture angle of rotation range (52) such that the drive spring (22), upon further rotation of the cocking element (33), is brought into a tensioned state required for the quick puncture movement.
9. The blood removal system according to claim 8, characterized in that the inhibition of the rotational movement of the drive rotor (24) is provided by a pawl (45, 46) coupled with a release.
10. Blood removal system according to claim 8, charac-terized in that the inhibition is self-releasing, such that the drive rotor (24) is released when the drive spring (22) is in a tensioned state required for the puncture movement.
11. Blood removal system according to any one of the preceding claims, characterized in that the output-side coupling mechanism (25) includes a recess (29) forming a control curve (27), wherein a control pin (28) engages in the recess (29), whereby during the rotational movement of the drive rotor occurring in the drive phase the control pin (28) travels along the control curve (27) formed by the recess (29), thereby determining at least a part of the puncturing and reverse movement, wherein a maximum displacement of the lancet in the puncture direction is determined by means of a lower reversal point of the control curve.
12. Blood removal system according to claim 11, characterized in that the recess (29) forming the control curve (27) is provided in the drive rotor (24).
13. Blood removal system according to claim 12 in combination with claim 6, characterized in that the recess (29) forming the control curve (27) within the drive module (55) runs on a side of the drive rotor (24) facing the cocking element (33).
CA2429594A 2002-05-28 2003-05-26 Blood removal system Expired - Lifetime CA2429594C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2708807A CA2708807C (en) 2002-05-28 2003-05-26 Blood removal system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223558.9 2002-05-28
DE10223558A DE10223558A1 (en) 2002-05-28 2002-05-28 System useful in withdrawing blood for diagnostic purposes, has housing, lancet guide and lancet drive provided with drive spring, cocking device, drive rotor and outputs side coupling mechanism

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA2708807A Division CA2708807C (en) 2002-05-28 2003-05-26 Blood removal system

Publications (2)

Publication Number Publication Date
CA2429594A1 true CA2429594A1 (en) 2003-11-28
CA2429594C CA2429594C (en) 2011-02-22

Family

ID=29432349

Family Applications (2)

Application Number Title Priority Date Filing Date
CA2708807A Expired - Lifetime CA2708807C (en) 2002-05-28 2003-05-26 Blood removal system
CA2429594A Expired - Lifetime CA2429594C (en) 2002-05-28 2003-05-26 Blood removal system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CA2708807A Expired - Lifetime CA2708807C (en) 2002-05-28 2003-05-26 Blood removal system

Country Status (8)

Country Link
US (1) US7223276B2 (en)
EP (3) EP1384438B1 (en)
JP (2) JP3746772B2 (en)
AT (1) ATE429174T1 (en)
CA (2) CA2708807C (en)
DE (2) DE10223558A1 (en)
DK (1) DK1384438T3 (en)
ES (3) ES2324212T3 (en)

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EP2082685B1 (en) 2014-05-14
EP1384438A1 (en) 2004-01-28
CA2429594C (en) 2011-02-22
DE50311444D1 (en) 2009-06-04
EP2213229A1 (en) 2010-08-04
CA2708807A1 (en) 2003-11-28
DE10223558A1 (en) 2003-12-11
ATE429174T1 (en) 2009-05-15
ES2473628T3 (en) 2014-07-07
EP2082685A1 (en) 2009-07-29
EP1384438B1 (en) 2009-04-22
JP2003339679A (en) 2003-12-02
ES2426718T3 (en) 2013-10-24
JP3746772B2 (en) 2006-02-15
CA2708807C (en) 2015-01-27
US20040092996A1 (en) 2004-05-13
DK1384438T3 (en) 2009-08-17
JP2006006969A (en) 2006-01-12
US7223276B2 (en) 2007-05-29
ES2324212T3 (en) 2009-08-03
EP2213229B1 (en) 2013-07-31

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