WO2004043258A1 - Outil d'introduction d'aiguille - Google Patents

Outil d'introduction d'aiguille Download PDF

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Publication number
WO2004043258A1
WO2004043258A1 PCT/JP2003/013678 JP0313678W WO2004043258A1 WO 2004043258 A1 WO2004043258 A1 WO 2004043258A1 JP 0313678 W JP0313678 W JP 0313678W WO 2004043258 A1 WO2004043258 A1 WO 2004043258A1
Authority
WO
WIPO (PCT)
Prior art keywords
needle
plunger
housing
needle unit
puncture
Prior art date
Application number
PCT/JP2003/013678
Other languages
English (en)
Japanese (ja)
Inventor
Satoru Tominaga
Mamoru Kanno
Original Assignee
Sekisui Chemical Co., 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 Sekisui Chemical Co., Ltd. filed Critical Sekisui Chemical Co., Ltd.
Priority to JP2004551193A priority Critical patent/JPWO2004043258A1/ja
Priority to AU2003275671A priority patent/AU2003275671A1/en
Publication of WO2004043258A1 publication Critical patent/WO2004043258A1/fr

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
    • A61B5/15186—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
    • A61B5/150007—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
    • A61B5/150053—Details for enhanced collection of blood or interstitial fluid at the sample site, e.g. by applying compression, heat, vibration, ultrasound, suction or vacuum to tissue; for reduction of pain or discomfort; Skin piercing elements, e.g. blades, needles, lancets or canulas, with adjustable piercing speed
    • A61B5/150106—Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced
    • A61B5/150152—Means for reducing pain or discomfort applied before puncturing; desensitising the skin at the location where body is to be pierced by an adequate mechanical impact on the puncturing location
    • 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
    • A61B5/150175—Adjustment of penetration depth
    • A61B5/150183—Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating 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
    • A61B5/150381—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
    • A61B5/15101—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
    • A61B5/151—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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
    • A61B5/14532—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring glucose, e.g. by tissue impedance measurement

Definitions

  • the present invention relates to a puncture device used for taking blood from a living body site such as a fingertip in a blood test, for example.
  • the number of diabetic patients has been increasing, and methods of measuring and managing blood sugar levels using blood sugar level measuring devices by themselves have become mainstream.
  • the patient collects blood for measurement from his / her fingertip.
  • a needle is pierced into the skin of the fingertip using a puncture device equipped with a puncture needle, and the blood is squeezed out by pressing around the puncture part.
  • a plunger provided with a puncture needle at the tip is advanced with a single coil panel in a housing, and the needle is punctured into the fingertip surface.
  • the biasing force of the panel is adjusted so as to apply a large pushing force to the needle during puncturing, it becomes difficult for the needle to return into the housing, and conversely, when the needle is surely returned to the housing. Since a large piercing force that can be pierced cannot be obtained, it is inconvenient to use and easily hurts the patient.
  • a puncture device equipped with a lance pushing mechanism has been proposed (Japanese Patent Application Laid-Open No. 3-141,929).
  • this puncture device has a drawback in that the puncture needle cannot be quickly ejected from the tip of the housing.
  • the cause of pain in a patient when puncturing with the puncture device having the configuration disclosed in Japanese Patent Application Laid-Open No. 2000-245571 is considered as follows.
  • the puncture device is configured such that when one plunger advances and retreats, the puncture needle provided at the distal end of the lance protrudes from the housing and returns to the housing. In order for the plunger to move forward, the biasing force of the panel must be greater than the biasing force of the plunger to retract.
  • the fingertip will be subjected to minute vibrations of the needle and the measuring instrument for a long time when the needle returns from the fingertip, causing pain.
  • the return biasing force is small, so this switching must be performed when the spring is extended to some extent, and as a result, the travel distance of the plunger within the housing is reduced. It becomes longer and the vibration and shock of the panel are easily transmitted to the fingertips, which causes pain.
  • the purpose of the present invention is to provide a puncture device that can prevent the patient from transmitting to the fingertip for a long time, and can reduce the pain suffered by the patient as much as possible.
  • forward or distal direction refers to the direction in which the needle projects from the puncture device during puncturing, that is, the left direction in FIGS. The relationship is based on Figures 2 and 10. Disclosure of the invention
  • the present invention has been devised to solve the above problems.
  • the first puncture device is composed of a cylinder having a rear end wall (11), and has a front protruding portion (12) on the inner surface near the front, a rear protruding portion (13) after the front protruding portion (12), and a side portion.
  • a housing (1) having a puncture operation part (14) and a rear stud (15);
  • a cap (2) provided at the front end of the housing (1), having a needle passage hole (21) at the center of the front end, and having a rear end surface forming a front stopper (22); and the housing (1). It is arranged near the front end so that it is movable in the axial direction, but is prevented from moving forward by the front stopper (22) and prevented from moving backward by the front projection (12).
  • 3) has an end portion (51) that can pass through the inside of the ring, and is locked by the rear stopper (15) of the housing (1), and is operated by the puncture operating part (14) to operate the rear stopper (15).
  • a front plunger engaging portion (32) provided on the inner surface of the front plunger (3);
  • a rear plunger engaging portion (54) which is provided on a side portion of the front end portion (51) of the rear plunger (5), and which engages with and disengages from the front plunger one engaging portion (32);
  • a front spring (6) that extends between the front plunger (3) and the rear projection (13) of the housing (1) and pulls the front plunger (3) rearward, and a rear plunger (5).
  • a rear spring (7) interposed between the rear end wall (11) of the housing (1) and pushing the rear plunger (5) forward. It is a puncture device.
  • the front protrusion (12) of the housing (1) and / or the front stopper (22) of the cap (2) are preferably made of a shock absorbing material.
  • the second puncture device according to the present invention comprises:
  • a housing (101) includes a body cover (117) having a push button (116) facing the push button hole and a charge case (118) provided at the rear end of the body so as to be movable back and forth.
  • the needle unit has a needle unit (119) detachably held at the tip in the housing, and a needle push bar (123) for pushing the needle unit forward.
  • the holder (120) is housed so that it can move back and forth with respect to the housing,
  • the needle unit holder is provided with a locking projection (121) which is variable inward and outward due to elasticity so as to fit into the push button hole in the retracted state of the holder unit to prevent the needle unit holder unit from moving forward,
  • a main spring (124) for urging the holder unit forward is interposed between the barrel and the needle unit holder, and the holder is biased backward between the needle unit holder and the charge case.
  • the main case By retracting the charge case with respect to the barrel, the main case is provided with an urging force for moving the needle unit holder forward, and the auxiliary spring is also provided with an urging force for moving the needle unit holder back.
  • the main panel by operating the push button to release the locking projection from the push button hole, advances the needle unit holder by the forward biasing force, and moves the needle puncture needle (125) out of the needle passage hole. Let it stick out, The catching spring retracts the advanced needle unit holder with a rearward urging force, and stores the puncture needle in the cap.
  • a spring stopper (114) is provided on the barrel body so as to protrude inward, and the vanes stopper controls the release of the main panel within a predetermined length when the needle unit holder advances. It is a puncture tool at the position where the front end of the main panel hits.
  • the preferred embodiment of the second puncture device is
  • a needle unit push piece (151) having an inward projection (152) is provided on the housing so as to be slidable back and forth.
  • a movable piece (153) with a variable inclination angle is rotatably supported on the inward projection, and between the movable piece and the rear end of the needle unit holder, the tip of the movable piece contacts the needle push rod.
  • a movable one-time spring (154) that urges the movable piece to rotate is interposed,
  • the movable piece is pressed against the needle push bar by pushing the needle unit push piece against the urging force of the movable piece rotating panel, and pushes the needle forward.
  • the needle is released from the needle unit holder 1 and then returned to the original position by the biasing force of the movable half-turning spring.
  • the rear part of the movable half-turning panel is located inside the catching spring, using a puncture device. is there.
  • a more preferable embodiment of the second puncture device is a puncture device in which an intermediate portion of the movable single-sided rotation panel is passed through the inside of the main panel.
  • Another preferred embodiment of the second puncture device is a puncture device provided with a plurality of pointed projections (178) which are forwardly pointed on the distal end surface, and more specifically, the front end of the housing.
  • the puncture device is provided with a tip cover (176) having a large number of pointed projections that are pointed forward on the tip surface.
  • the shape of the pointed protrusion is preferably conical or pyramidal.
  • the height of the part is preferably between 0.3 and 0.7 mm, more preferably between 0.3 and 0.6 mm.
  • the multiple piercing devices may be uniform or random in height.
  • the number of pointed protrusions is preferably about 5 to 50, more preferably 8 to 35.
  • the arrangement of the pointed protrusions on the distal end surface of the distal end cover may be random or may have a specific pattern. This pattern may be concentric, radial, etc.
  • FIG. 1 is a perspective view showing a disassembled state of the puncture device according to the first embodiment.
  • FIG. 2 is a longitudinal sectional view of the puncture device in a state before a puncture operation.
  • FIG. 3 is a longitudinal cross-sectional view of the puncture device showing a state in which the rear plunger (5) is pulled rearward and the locking portion (53) is locked to the rear stopper (15) of the housing (1). It is.
  • FIG. 4 is a longitudinal cross-sectional view of the puncture device showing a state in which the locking portion (53) of the rear plunger (5) has been detached from the housing (15) after the housing (1).
  • FIG. 5 the rear plunger (5) is pushed forward by the rear spring (7), and the front end face of the front plunger (3) hits the front stopper (22) of the cap (2).
  • FIG. 6 is a longitudinal cross-sectional view of the puncture device showing a state in which the ridge of the rear plunger-engaging portion (54) has slipped forward from the recess of the front plunger engaging portion (32).
  • FIG. 7 is a longitudinal sectional view of the puncture device showing a state in which the front plunger (3) is pulled backward by the front spring (6) and the puncture needle (42) is returned into the cap (2). .
  • FIG. 8 is a perspective view of the puncture device according to the second embodiment.
  • FIG. 9 is a perspective view showing a disassembled state of the puncture device.
  • FIG. 10 is a vertical longitudinal sectional view of the puncture device showing a state before a puncture start operation.
  • FIG. 11 is a vertical longitudinal sectional view of the puncture device in a charged state.
  • FIG. 12 is a vertical longitudinal sectional view of the puncture device in a standby state.
  • FIG. 13 is a vertical longitudinal sectional view of the puncture device showing a puncture state.
  • Fig. 14 is a vertical cross-sectional view of the puncture device showing the needle unit released.
  • FIG. 15 is a perspective view showing a disassembled state of the front end of the puncture device.
  • FIG. 16 is a vertical longitudinal sectional view of the puncture device showing a puncture state.
  • Example 1 corresponds to the first puncture device
  • Example 2 corresponds to the second puncture device.
  • the housing (1) is made of a synthetic resin, is constituted by a cylindrical body having a rear end wall (11), and has an annular front protruding portion (12) on the inner surface on the front side.
  • An annular rear projection (13) is provided after the front projection (12).
  • the front projection (12) is made of rubber so as to absorb impact.
  • a puncturing operation section (14) is formed on the rear side of the housing (1) by cutting the side wall in a tongue shape and bending the tongue outward slightly.
  • the rear end face of the rim is a rear stopper (15).
  • the puncture operation section (14) is elastically deformable inward and outward.
  • a rod passage hole (16) having a diameter that allows the operation rod (52) of the rear plunger (5) to pass through is formed. I have.
  • the housing (1) also functions as a grip when using a puncture device.
  • the cap (2) is provided inside the housing (1) by screwing the male thread (23) into the female thread (17) at the tip of the housing (1).
  • a needle (42) passes through the center of the tip of the cap (2).
  • a needle passage hole (21) having a diameter that can be cut is provided.
  • the rear end of the cap (2) forms a step with the inner surface of the housing (1), and the rear end of the cap (2) forms the front stopper (22).
  • the stopper (22) in front of the cap (2) is made of rubber to absorb shock.
  • the front plunger (3) consists of a short ring or cylinder made of synthetic resin having an outer diameter slightly smaller than the inner diameter of the housing (1). It is located near the tip in the housing (1) and is movable in the axial direction, but is prevented from moving forward by the front stopper (22) of the cap (2), and The retreat is prevented by the front projection (12) of (1).
  • a bridge (33) is provided at the front end of the front plunger (3) in the diameter direction, and a small cylindrical portion (34) is provided at the center of the bridge (33), that is, at the axis of the front bracket (3). ) Are provided in the axial direction.
  • the needle unit (4) is composed of a cylindrical needle holding member (41) and a puncture needle (42) provided on the distal end surface of the needle holding member (41) so as to protrude forward. Is removably attached to the small cylindrical portion (34) of the front plunger (3).
  • the piercing needle (42) of the needle unit (4) moves out and out of the cap (2) through the needle passage hole (21) of the cap (2) with the forward and backward movement of the front plunger (3). I do.
  • the rear plunger (5) is also made of a synthetic resin cylinder having an outer diameter slightly smaller than the inner diameter of the housing (1). It is disposed movably in the axial direction in the housing (1) behind the front plunger (3) and has a tip (51) that can be inserted into the ring of the front plunger (3). On the rear side of the rear plunger (5), a locking portion (53) is formed which can be elastically deformed by forcibly bending the tongue outward by forcing the side wall in a tongue shape. This is locked by the stopper (15) after the housing (1), and then detached from the rear stopper (15) by the puncture operation part (14). Housing on rear end face of rear plunger (5) An operation port (52) projecting rearward through the port passage hole (16) of (1) is provided.
  • the rear plunger (5) has a notch (55) formed at both ends (51) at the front end thereof, the cutout (55) opening toward the front end. The notch (55) is wide enough to fit the bridge (33) of the front plunger (3).
  • the front plunger engagement portion (32) is composed of a pair of recesses formed in a circumferential direction on the inner surface of the ring of the front plunger (3).
  • the rear plunger engaging portion (54) has a pair of tongues formed on the side of the front end (51) of the rear plunger (5) and circumferentially formed on the outer surface of the front end of each tongue.
  • the tongue is elastically deformable inward and outward. These ridges engage and disengage from the recesses of the front plunger engagement portion (32).
  • the rear panel (7) is a compression coil panel that pushes the rear plunger (5) forward, and after the rear plunger (5) and the housing (1) so as to wind the operation rod (52). It is interposed between the end wall (11).
  • the biasing force of the rear panel (7) is such that the rear plunger (5) is pushed forward by the rear spring (7), and the front end face of the front plunger (3) interlocking with this pushes the cap (2).
  • the ridge of the rear plunger engagement portion (54) comes out of the recess of the front plunger engagement portion (32) forward, and these engagements occur. Is set to be solved.
  • the front spring (6) is a tension coil spring that pulls the front plunger (3) backward, the front end of which is fixed to the front plunger (3), and the rear end of which is the rear projection (housing) of the housing (1). Fixed to 13).
  • the biasing force of the front spring (6) is such that the rear plunger (5) moves forward and the rear plunger one engagement part (54) and the front plunger one engagement part (32) engage as described above. It is set so that the front plunger (3) is pulled back after is released.
  • the puncture operation of the first puncture device is performed as follows.
  • the rear plunger (5) and the rear plunger-engaging portion (54) are engaged with the front plunger (3).
  • the front plunger is disengaged from the engaging portion (32), and the locking portion (53) of the rear plunger (5) is disengaged from the stopper (15) after the housing (1).
  • the front plunger (3) is retracted with respect to the rear plunger (5), and the tip (51) of the latter is inserted into the cap (2).
  • the former bridge (33) is fitted into the latter notch (55) so as to avoid interference between the two.
  • the piercing needle (42) is housed in the cap (2).
  • the operating port (52) is staked by the biasing force of the rear spring (7) and pulled rearward a maximum distance, and the rear plunger (5) is moved to the front plunger (5). 3), the protrusion of the rear plunger engaging portion (54) is fitted into the recess of the front plunger engaging portion (32), and the locking portion of the rear plunger (5) is engaged. Lock (53) to stopper (15) after housing (1).
  • the puncturing operation section (14) of the housing (1) is pushed inward, and the locking section (53) of the rear plunger (5) located inside the housing is pressed into the housing (1).
  • the rear plunger (5) and the front plunger (3) linked thereto are pushed forward by the biasing force of the rear spring (7), and the front plunger (5) is pushed forward.
  • the front plunger (3) moves forward until the front end of the jaw (3) hits the front spigot (22) of the cap (2).
  • the puncture needle (42) protrudes forward through the needle passage hole (21) of the cap (2) and is punctured at the fingertip. .
  • the second puncture device includes a housing (101), a needle unit forward / backward movement mechanism (102) and a needle unit discharge mechanism (103) housed therein, and a housing (101). And a pain relief mechanism (107) provided at the front end of the body.
  • the housing (101) has a body (115) having a push button hole (113) in the upper part, and is detachably provided at the tip of the body (115), and has a needle passage hole (111) in the center of the tip surface. ), A body cover (117) externally mounted on the body (115), and having a push button (116) facing the push button hole (113); and a body ( 115) and a charge case (118) provided at the rear end so as to be movable back and forth with respect to the barrel.
  • the rear end of the cap (112) is detachably fitted over the front end of the barrel (115), and the front end of the case (118) is fitted to the rear end of the trunk cover (117). It is fitted.
  • the barrel (115) has a cylindrical shape with a bottom, and a pair of upper and lower square bars (165) and (166) of a needle unit holder (120) and a movable one-side rotating blade are provided on a rear end wall (171).
  • a through hole (172) for passing the (154) and its locking projection (169) is opened, and receives the rear end of the main panel (124) on the front surface of the rear end wall (171).
  • the push button (116) provided on the upper part of the body cover (117) is made of an elastically deformable material, and is formed with a casing (182) and an inwardly projecting push button hole (The tongue (183) faces the push button hole (113) by pressing the casing (182) downward. This state is maintained after the charger case (118) is pulled rearward with respect to the barrel (115). On the inner surface of the central part of the length of the charge case (118), an annular catching bar for receiving the front end of the auxiliary panel (122) is provided.
  • the front end receiving piece (161) is fixed, and a pair of upper and lower square bars (165) and (166) of the needle unit holder (120), a movable piece rotating panel (154) and its locking projection are fixed in the ring. (169) is passed through.
  • a spring stopper (114) is provided on the barrel (115) so as to protrude inward.
  • a plurality of vanes tongues (114) are formed on the inner surface of a cut-off ring (158) that is separate from the barrel (115), and the cut-off rings (158) are formed on the outer surface of the barrel (115).
  • the needle unit longitudinal movement mechanism (102) is configured as follows. As described above, the needle unit (119) is detachably attached to the tip in the housing (101) provided with the push button hole (113), the push button (116) facing the same, and the spring stopper (114).
  • a needle unit holder (120) having a needle push bar (123) slidably for holding and for pushing the needle unit (119) forward is accommodated in the housing so as to be movable back and forth.
  • the needle unit (119) has a cylindrical shape, and a puncture needle (125) is attached to the center of the distal end face in a forwardly protruding manner.
  • the rear half (104) of the needle unit (119) is housed in a bottomed cylindrical unit-holding part (162) formed at the front end of the needle unit holder (120).
  • the needle push bar (123) is composed of a disk portion and a sliding portion having a T-shaped cross section provided vertically to the rear surface of the disk portion, and the horizontal portion (181) of the sliding portion is a unit holding portion (162).
  • the disc unit is slidably disposed in an elongated hole (180) formed to extend rearward from the rear wall of the needle unit (119) and the rear end surface (104) of the needle unit (119). Between the rear wall portions of the holding portion (162).
  • a flexible portion (164) extending rearward is provided on the upper side of the needle unit holder (120), and a locking projection (121) is formed at the tip thereof so as to protrude outward.
  • the locking projection (121) is movable inward and outward, that is, in the radial direction due to the elasticity of the flexible portion (164). In the retracted state of the holder, the locking projection (121) is fitted into the push button hole (113) to fit the needle unit. Prevents the holder (120) from moving back and forth.
  • the rear half of the needle unit holder (120) consists of a pair of upper and lower square bars (165) and (166), and a step receiving the rear end of the main panel (124) on the lower surface of the front end of the lower square bar (166). (167) is provided, and a supporting spring rear end receiving piece (168) for receiving the rear end of the supporting spring (122) is fixed to the rear ends of the pair of square bar portions (165) and (166).
  • a locking projection (169) for hooking the rear end of the movable half-rotating spring (154) is provided at the bridge portion near the rear end of the square bar portions (165) and (166).
  • the main spring (124) is a compression coil spring, which covers a pair of upper and lower square bars (165) (166), and normally has a rear end wall (171) and a needle unit holder of the barrel (115).
  • the needle unit (120) is interposed between the step unit (167) and the needle unit holder (120).
  • the catching spring (122) is also a compression coil spring, and has a pair of upper and lower square rods (165) and (166), and the catch panel (168) of the needle unit holder (120) and the charge case. It is interposed between the catching spring front receiving piece (161) of (118) and urges the needle unit holder (120) backward.
  • the catching spring (122) is always located behind the main spring (124).
  • the movable piece rotating panel (154) is a tension coil spring, and its middle part is arranged in the main panel (124), and its rear end is arranged in the catching panel (122). With such an arrangement, the diameter of the puncture device can be reduced, and the puncture device can be made compact.
  • the needle unit longitudinal movement mechanism (102) is operated as follows.
  • the rear half (104) of the new needle unit (119) is placed in the unit holding portion (162) of the needle unit holder (120).
  • the charge case (118) is located at the most advanced position with respect to the barrel (115), and the locking projection (121) of the needle unit holder (120) extends from the button hole (113) of the barrel (115). Comes out and lies ahead of this.
  • the main spring (124), the auxiliary spring (122), and the movable one-side rotating panel (154) are all in a release state.
  • the push button (116) is pushed to release the locking projection (121) from the push button hole (113).
  • the needle unit holder (120) is advanced by the forward biasing force of the main spring (124), and the puncture needle (125) of the needle unit (119) is inserted into the needle passage hole of the cap (112). (111) and through the needle passage hole (179) of the tip force bar (176), it protrudes forward from the tip cover (176) by a predetermined length, and pierces the skin of the fingertip.
  • the spring collar (114) of the barrel (115) is located behind the step (167) of the needle unit holder (120).
  • the front end of the main panel (124) hits the spring collar (114), and the release length of the main spring (124) is kept shorter than the length of the fully released state.
  • the main spring (124) acts to prevent the auxiliary spring (122) from returning to the rear of the needle unit (119), and the main panel (124) prevents the needle unit (119) from moving.
  • the backward return stopping force is reduced by the length of the main spring (124) hitting the spring tongue (114) from the completely released state of the main spring (124) by the installation of the tongue tongue (114). Therefore, the needle unit (119) is quickly retracted by the rear urging force of the catch panel (122).
  • the main spring (124) is completely released and further moved forward and its front end hits or rebounds on the step (167) of the needle unit holder (120), Impact noise and vibration noise are generated, but the generation of such noise can be prevented by installing a pan stop (114).
  • the needle unit holder (120) After the puncture, the needle unit holder (120) is retracted by the rearward biasing force of the catching spring (122), and the puncture needle (125) of the needle unit (119) is stored in the cap (112). Return to the state of FIG.
  • a needle unit pushing piece (151) having a pair of left and right inner protrusions (152) on the inner surface of the rear end is provided below the body cover (117). ) Is provided so as to be able to slide back and forth.
  • the inward projection (152) is located inside the barrel (115).
  • a movable piece (153) having a variable inclination angle is rotatably supported on the inward projection (152).
  • the movable piece (153) is L-shaped when viewed from the side, and has horizontal pins (106) and (184) projecting to both sides below the rear end (the left pin (106) when viewed from the front is Longer than the right), these horizontal pins (106) and (184) are arranged on the front side of the pair of inward protrusions (152), and the movable piece (153) is rotatable about the inward protrusion (152). It is supported.
  • the tip of the longer horizontal pin (106) It is in the long hole (170) that guides backward.
  • the front end of the movable piece rotating panel (154) is hooked on a locking projection (105) provided on the rear end upper part of the movable piece (153), and the movable piece (153) and the needle unit holder (120) are locked.
  • a movable one-sided rotation spring (154) which is a tension spring, is interposed between the rear ends.
  • the movable piece rotating panel (154) rotates the movable piece (153) in the direction in which the tip of the movable piece (153) comes into contact with the rear end face of the needle push bar (123) (clockwise from the state shown in Fig. 10). Energize this.
  • the movable piece rotating panel (154) By installing the movable piece rotating panel (154), the movable piece (153) can be quickly returned to the original position after the used needle unit (119) is discharged.
  • the length of the auxiliary panel (122) in the release state is set. And the number of effective turns can be increased, and the pitch angle can be reduced to 10 degrees or less.
  • the spring index D / d is 4 to 30, preferably 8 to 14 (D is the coil diameter, d is the wire diameter).
  • the needle unit discharge mechanism (103) is operated as follows.
  • the needle unit pushing piece (151) is piled by the urging force of the movable piece rotating panel (154) and pushed forward.
  • the movable piece (153) is guided by the elongated hole (170) and advances, and its front end contacts the rear end face of the needle push rod (123) and pushes it forward.
  • the used needle unit (119) is discharged from the needle unit holder (120).
  • a gentle spiral groove (175) is formed on the outer peripheral surface of the small-diameter portion at the tip of the cap (112), and an inner side is formed on the front end side.
  • a needle protrusion adjusting ring (174) having a protrusion (173) is fitted over the small-diameter portion of the tip of the cap (112), and the inner protrusion (173) is disposed in the spiral groove (175).
  • a cam mechanism That is, by rotating the ring (174) with respect to the cap (112), the ring (174) is moved back and forth.
  • a tip cover (176) having a number of sharp projections (178) on the tip surface and a needle passage hole (179) at the center of the tip wall is put on the ring (174), and the inner surface recess is provided.
  • the engagement protrusion (177) at the front end of the ring (174) is fitted.
  • the needle passage hole (179) of the tip cover (176) is provided so as to overlap the needle passage hole (111) of the cap (112). Therefore, when the tip cover (176) is turned, the ring (174) rotates and the tip cover (176) also moves back and forth with the forward and backward movement of the ring (174). The length of the protruding end from the tip cover (176) via the needle passage hole (111) of the cap (112) and the needle passage hole (179) of the tip cover (176) is adjusted.
  • the tip cover (176) when the tip cover (176) is pressed against the fingertip of the patient and the tip of the puncture needle (125) is pierced into the fingertip, a large number of the tip force bars (176) are used.
  • the pointed protrusion (178) causes a weak stimulus to the fingertip, which disperses and alleviates the pain caused by the puncture needle (125).
  • the present invention has the following advantageous effects.
  • the first puncture device is axially movable near the distal end in the housing (1), and has a front plunger (3) having a puncture needle (42) and a rear plunger (3).
  • the rear plunger (5) which is movably arranged in the housing (1) in the axial direction, the front panel (6) pulling the front plunger (3) backward, and the rear plunger (5) forward Since the panel (7) is provided after the pressing, the puncture needle (42) can be momentarily and forcibly protruded from the cap (2) and then retracted, and the puncture needle (42) is provided.
  • the travel distance of the front plunger (3) can be shortened. Therefore, the fine vibration of the needle or measuring instrument or the fine vibration or shock of the panel is long.
  • the front plunger (3) can be formed by forming the front projection (12) of the housing (1) and / or the front flange (22) of the cap (2) with a shock absorbing material.
  • the front end face of the housing hits the front collar (22) of the cap (2), or when the rear end face of the front plunger (3) hits the front projection (12) of the housing (1), the impact or The sound associated with the sound can be absorbed or mitigated, and the fear caused by the impact sound can be reduced.
  • a main spring (124) for urging the holder unit forward is interposed between the barrel body (115) and the needle unit holder (120), and the needle unit is mounted.
  • An auxiliary panel (122) that urges the holder backward is interposed between the holder and the charge case (118), so that the puncture needle can be momentarily and forcibly protruded from the cap. It can then be quickly retracted. Therefore, it is possible to solve the problem that the fine vibration or impact of the needle or the measuring instrument or the vibration of the panel is transmitted to the fingertip for a long time, thereby reducing the pain received by the patient as much as possible.
  • a spring stopper (114) is provided on the barrel (115) so as to protrude inward, and a vanes stopper (114) is provided on the main spring (124) when the needle unit holder is advanced.
  • the front end of the main panel (124) is located so as to keep the release within a predetermined length.
  • the spring stopper (114) of the barrel (115) is located behind the step (167) of the needle unit holder (120).
  • the front end of the main spring (124) hits the spring stopper (114), and the release length of the main spring (124) is kept shorter than the length of the fully released state.
  • the main spring (124) acts to prevent the auxiliary panel (122) from returning to the rear of the needle unit (119), but the main spring (124) prevents the needle unit (119) from returning backward.
  • the force is applied to the main spring (124) by installing the vanes top (114).
  • the rear part of the movable one-sided spring (154) is arranged inside the catch panel (122), so that the length of the catch spring (122) in the released state and the effective number of turns are set. And the pitch angle can be reduced. Also in this point, the puncture needle protruding from the cap can be quickly retracted. Also, the diameter of the puncture device can be reduced, and the puncture device can be made compact. If the movable half-turning spring is also arranged inside the main panel, the puncture device can be made more compact.o
  • the distal end surface is provided with a large number of pointed protrusions which are pointed forward, so that the distal end surface is pressed against the patient's fingertip, and the distal end of the puncture needle is pierced into the fingertip.
  • the large number of protruding parts gives a weak stimulus to the fingertip, thereby effectively dispersing the pain caused by the puncture needle and thereby reducing the pain received by the patient as much as possible.
  • the present invention relates to a puncture device used for taking blood from a living body site such as a fingertip in a blood test, for example.
  • the return force of the plunger provided with the puncture needle is enhanced to shorten the moving distance, and the fine vibration or impact of the needle or the measuring instrument or the fine vibration or impact of the panel is transmitted to the fingertip for a long time
  • a puncture device capable of minimizing pain and reducing the pain received by the patient as much as possible.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Physics & Mathematics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Pain & Pain Management (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

L'invention concerne un outil d'introduction d'aiguille comprenant un piston frontal (3) mobile de manière axiale et situé à proximité d'une extrémité avant à l'intérieur d'un logement (1) et présentant une aiguille d'introduction (42). L'outil décrit dans cette invention comprend également un piston arrière (5) placé derrière le piston avant de manière à pouvoir se déplacer axialement dans le logement; un ressort avant (6) conçu pour pousser le piston avant vers l'arrière; et un ressort arrière (7) conçu pour pousser le piston arrière vers l'avant. L'aiguille d'introduction peut être projetée instantanément et de force à l'extérieur puis replacée, de telle sorte qu'une distance de déplacement du piston avant accompagné de l'aiguille d'introduction puisse être réduite. Ce mode de réalisation permet de résoudre un problème, tel que la micro-vibration de l'aiguille et d'un instrument de mesure, ou la micro-vibration et l'impact du ressort transmis à un bout de doigt pendant un long moment, ce qui permet de maîtriser la douleur du patient autant que possible.
PCT/JP2003/013678 2002-10-28 2003-10-27 Outil d'introduction d'aiguille WO2004043258A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2004551193A JPWO2004043258A1 (ja) 2002-10-28 2003-10-27 穿刺具
AU2003275671A AU2003275671A1 (en) 2002-10-28 2003-10-27 Needle insertion tool

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002313367 2002-10-28
JP2002-313367 2002-10-28

Publications (1)

Publication Number Publication Date
WO2004043258A1 true WO2004043258A1 (fr) 2004-05-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2003/013678 WO2004043258A1 (fr) 2002-10-28 2003-10-27 Outil d'introduction d'aiguille

Country Status (3)

Country Link
JP (1) JPWO2004043258A1 (fr)
AU (1) AU2003275671A1 (fr)
WO (1) WO2004043258A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007190394A (ja) * 2006-01-20 2007-08-02 Lifescan Inc 減衰装置付き切開器具
EP1815792A1 (fr) * 2004-10-25 2007-08-08 Arkray, Inc. Lancette et dispositif a lancette l utilisant
EP1911395A1 (fr) * 2005-07-29 2008-04-16 Arkray, Inc. Dispositif d'insertion d'aiguille
JP2008546468A (ja) * 2005-06-22 2008-12-25 “ハーテーエル−ストレファ”スポールカ アクシーナ 患者皮膚穿刺装置
WO2009052710A1 (fr) * 2007-10-26 2009-04-30 Chiu-Yueh Huang Lancette de sécurité
WO2010019741A1 (fr) * 2008-08-14 2010-02-18 Abbott Diabetes Care Inc. Mécanisme d'armement pour dispositif de perçage
JP4799564B2 (ja) * 2004-12-21 2011-10-26 オーウェン マンフォード リミテッド 皮膚に刺す装置
KR101781309B1 (ko) * 2016-12-06 2017-09-25 주식회사 제이투 문신용 바늘모듈

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03141929A (ja) * 1989-08-25 1991-06-17 Lifescan Inc ランセツト押し出し機構
JPH0884721A (ja) * 1994-09-16 1996-04-02 Meitec Corp 採血器
JPH1176211A (ja) * 1997-07-31 1999-03-23 Bayer Corp ランセット減衰手段を備えた血液試料採取装置
JP2000166902A (ja) * 1998-12-03 2000-06-20 Apurusu Kk ランセット発射デバイス
JP2000245717A (ja) * 1999-03-04 2000-09-12 Terumo Corp 穿刺具

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03141929A (ja) * 1989-08-25 1991-06-17 Lifescan Inc ランセツト押し出し機構
JPH0884721A (ja) * 1994-09-16 1996-04-02 Meitec Corp 採血器
JPH1176211A (ja) * 1997-07-31 1999-03-23 Bayer Corp ランセット減衰手段を備えた血液試料採取装置
JP2000166902A (ja) * 1998-12-03 2000-06-20 Apurusu Kk ランセット発射デバイス
JP2000245717A (ja) * 1999-03-04 2000-09-12 Terumo Corp 穿刺具

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1815792A1 (fr) * 2004-10-25 2007-08-08 Arkray, Inc. Lancette et dispositif a lancette l utilisant
EP1815792A4 (fr) * 2004-10-25 2011-03-23 Arkray Inc Lancette et dispositif a lancette l utilisant
US8251919B2 (en) 2004-10-25 2012-08-28 Arkray, Inc. Lancet and lancet device including the same
JP4799564B2 (ja) * 2004-12-21 2011-10-26 オーウェン マンフォード リミテッド 皮膚に刺す装置
JP2008546468A (ja) * 2005-06-22 2008-12-25 “ハーテーエル−ストレファ”スポールカ アクシーナ 患者皮膚穿刺装置
EP1911395A1 (fr) * 2005-07-29 2008-04-16 Arkray, Inc. Dispositif d'insertion d'aiguille
EP1911395A4 (fr) * 2005-07-29 2009-07-29 Arkray Inc Dispositif d'insertion d'aiguille
US8454641B2 (en) 2005-07-29 2013-06-04 Arkray, Inc. Lancet device
JP2007190394A (ja) * 2006-01-20 2007-08-02 Lifescan Inc 減衰装置付き切開器具
WO2009052710A1 (fr) * 2007-10-26 2009-04-30 Chiu-Yueh Huang Lancette de sécurité
WO2010019741A1 (fr) * 2008-08-14 2010-02-18 Abbott Diabetes Care Inc. Mécanisme d'armement pour dispositif de perçage
KR101781309B1 (ko) * 2016-12-06 2017-09-25 주식회사 제이투 문신용 바늘모듈

Also Published As

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AU2003275671A1 (en) 2004-06-03

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