JP2005176938A - Puncture device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a puncture device capable of preventing a used puncture tool from being erroneously used and therefore preventing infection by this erroneous use. <P>SOLUTION: The puncture device 1 according to the present invention is used by fixing a tip 2 having a casing 3 and a puncture needle 5 in a casing to the casing 3. The puncture device 1 has a device body 4 having a loading portion 41 for loading the tip 2 a stopper 6 disposed in the device body 4 and having abutting portion 62 to which the casing 3 abuts and a push and press portion 63 which is pushed and pressed by the puncture needle 5, the loading portion 41 of the tip 2 is prevented from loading by the casing 3 abutting to the abutting portion 62 of the stopper 6 in the loading portion 41 when the used tip 2 is inserted into the loading portion 41, and the tip 2 is allowed to be loaded to the loading portion 41 by the puncture needle 5 pushing and pressing the press and push portion 63 of the stopper 6 in the loading portion 41 to evacuate the stopper 6 outside of the loading portion 41 when an unused tip 2 is inserted into the loading portion 41. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a puncture device that is used by attaching a puncture device that includes a casing and a puncture needle in the casing.

  In recent years, with the increase in the number of diabetic patients, self blood glucose measurement in which patients themselves monitor fluctuations in daily blood glucose levels has been recommended.

  A blood glucose measuring device that automatically measures the amount of glucose in the blood is used to measure the blood glucose level. Prior to this measurement, the patient needs to collect his blood.

  As a method for collecting blood, after puncturing the skin of a fingertip with a puncture needle, the blood is squeezed by pressing the periphery of the puncture portion with a finger or the like.

  A puncture device including a puncture needle is used for puncturing a fingertip with this puncture needle. Specifically, the puncture device is attached to the puncture device, the puncture device is operated to cause the puncture needle to protrude, and the fingertip is punctured.

  As described above, the puncture device used with the puncture tool attached is configured such that the puncture device can be attached to the puncture device only in a normal direction (see, for example, Patent Document 1). The puncture device described in Patent Document 1 is configured such that the shape of the fitting portion to the puncture device is asymmetric with the shape of the fitting portion on the puncture device side. Thus, the puncture device is configured to be attached to the puncture device only when the puncture device is inserted in a predetermined direction, that is, to prevent reverse insertion of the puncture device into the puncture device.

  However, such puncture devices can be mounted on the puncture device, regardless of whether they are unused or used, as long as they are inserted into the puncture device in a normal (predetermined) direction. Therefore, when a patient wears a used puncture device on the puncture apparatus and uses it, there is a risk of causing infection (for example, blood infection) from the puncture device.

International Publication No. 02/056769 Pamphlet

  An object of the present invention is to provide a puncture device that can prevent erroneous use of a used puncture device, and thus can prevent infection and the like due to this misuse.

  Such an object is achieved by the present inventions (1) to (8) below. The following (9) to (12) are preferable.

(1) A puncture device that is used by attaching a puncture device including a casing and a puncture needle in the casing,
An apparatus body having a loading unit for loading the puncture device;
A stopper provided on the apparatus main body and having a contact portion with which the casing contacts and a pressing portion with which the puncture needle presses;
The stopper is displaceable between a first position in the loading unit and a second position retracted from the loading unit;
When the used puncture device is inserted into the loading portion, the casing abuts against the abutting portion of the stopper at the first position, whereby the puncture device is loaded into the loading portion. Blocked,
When the unused puncture device is inserted into the loading portion, the puncture needle presses the pressing portion of the stopper at the first position, and the stopper is moved from the first position to the second position. The puncture apparatus is configured to allow the puncture device to be loaded into the loading portion by being displaced to the position.

  (2) The puncture device according to (1), wherein the stopper is configured to rotate with respect to the device main body when the stopper is displaced between the first position and the second position.

  (3) The stopper according to (1), wherein when the stopper is displaced between the first position and the second position, the stopper is configured to move substantially perpendicular to a longitudinal direction of the loading unit. Puncture device.

(4) The stopper has a guide pin,
The apparatus main body has a guide rail for guiding the guide pin,
The puncture device according to (1), wherein the stopper is configured to be displaced between the first position and the second position when the guide pin moves along the guide rail.

  (5) The puncture device according to any one of (1) to (4), further including an urging unit that urges the stopper to move from the second position to the first position.

  (6) The puncture device according to any one of (1) to (5), wherein the device main body is provided with a measuring unit that measures the amount and / or property of a predetermined component in the body fluid.

(7) A puncture device that is used with a puncture device comprising a casing and a puncture needle in the casing,
When not in use, the puncture needle is fixed to the casing, and when used, the puncture needle is attached to the casing so that the puncture needle is released from being fixed to the casing. A puncture apparatus characterized in that only the unused puncture device can be mounted by utilizing the difference in the position of the puncture needle.

(8) A device main body having a loading unit for loading the puncture device, and a stopper provided in the device main body,
According to the position of the puncture needle with respect to the casing, the stopper has a first position for preventing loading of the used puncture device into the loading portion, and the stopper to the loading portion of the unused puncture device. The puncture device according to (7), wherein the puncture device is configured to be displaced to a second position where loading is permitted.

(9) The puncture device according to (5), wherein the biasing unit is configured by a leaf spring.
(10) The puncture device according to (9), wherein the leaf spring is formed integrally with the stopper.

(11) The puncture device according to (5), wherein the urging unit includes a compression spring.
(12) The puncture device according to (5), wherein the biasing unit is configured by a tension spring.

  According to the present invention, it is possible to prevent the used puncture tool from being used by being attached to the puncture device. For this reason, the infection by such misuse etc. can be prevented.

  Further, in the case where the biasing means for biasing the stopper to move from the second position to the first position is provided, the stopper is surely moved to the first position when the puncture device is not loaded in the puncture device. Can be positioned. Thereby, it is possible to more reliably prevent the used puncture tool from being attached to the puncture apparatus.

Hereinafter, the puncture device of the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.
<First Embodiment>
1 to 3 are diagrams for explaining a case where an unused puncture device is attached to the puncture device of the present invention in the first embodiment, and FIGS. 4 and 5 are diagrams in the first embodiment, respectively. The figure for demonstrating the case where a used puncture tool is mounted | worn with the puncture apparatus of this invention, FIG. 11 is an external view (plan view) of the puncture apparatus of this invention in 1st Embodiment, FIG. The figure which shows the internal structure of the puncture apparatus shown in FIG. 13, FIG. 13 is a longitudinal cross-sectional view of the internal structure in the front-end | tip part of the puncture apparatus shown in FIG. In the following, for convenience of explanation, the left side in FIGS. 1 to 3 (the same applies to FIGS. 4 and 5 and FIGS. 11 to 13) is referred to as “tip”, and the right side is referred to as “base end”.

  The puncture device 1 shown in FIG. 11 loads (wears) a chip (puncture tool) 2 in a loading portion 41 provided in the device body 4 and collects body fluid through the epidermis (skin). This is a device that measures (detects) (uses) a predetermined component in a body fluid.

  The part of the epidermis (biological surface) in this puncture device 1 (the body fluid collection part) that is involved in the collection of the body fluid is preferably a finger, but in addition, for example, a hand (palm, back of hand, side of hand), It may be an arm, thigh, earlobe or the like.

  Hereinafter, blood will be described as a representative body fluid, glucose as a predetermined component, and a fingertip (finger) as a body fluid collection site.

First, before describing the puncture apparatus 1, the chip 2 will be described.
As shown in FIG. 1 (the same applies to FIGS. 2 to 5), the tip 2 includes a casing 3 and a puncture needle 5 that is movably provided in the casing 3. Hereinafter, the configuration of each unit will be described.

  The puncture needle 5 includes a needle body 51 and a hub 52 fixed (fixed) to the needle body 51.

  The needle body 51 is composed of a hollow member or a solid member made of a metal material such as stainless steel, aluminum, aluminum alloy, titanium, titanium alloy, and the like, and a sharp needle tip (blade tip) 511 is formed at the tip thereof. Has been. With the needle tip 511, the surface (skin) of the fingertip is punctured, and blood (body fluid) is discharged (bleeded) from the puncture site.

  The hub 52 is fixed (fixed) to the needle body 51 by, for example, fusion, bonding with an adhesive, fitting, caulking or the like so that the needle tip 511 protrudes.

  As shown in FIG. 1, the hub 52 includes a distal end portion 53 located on the distal end side and a proximal end portion 54 located on the proximal end side. In the unused chip 2, the vicinity of the tip end of the tip end portion 53 is fitted in a fitting portion 35 of the casing 3 described later.

  A pair of protrusions 541 are formed on the distal end side of the base end portion 54 so as to protrude laterally. Each protrusion 541 is in contact with the inner surface of the lumen 33 formed inside the casing 3.

  Further, on the proximal end side of the proximal end portion 54, a connecting portion 542 having a shape corresponding to the shape of the holder portion 464 formed on the plunger 461 of the puncture device 1 described later is formed. When the tip 2 is loaded into the puncture device 1, the puncture needle 5 is coupled to the plunger 461 by fitting (inserting) the coupling portion 542 into the holder portion 464 (see FIG. 3).

  Such a puncture needle 5 is movably provided in the lumen 33 of the casing 3. The casing 3 is configured by a substantially rectangular parallelepiped member, and a distal end opening 31 and a proximal end opening 32 where the lumen portion 33 is opened are formed at the distal end and the proximal end, respectively. The needle body 51 provided in the puncture needle 5 passes through the tip opening 31 and protrudes from the tip of the casing 3 (chip 2) by the operation of the puncture device 1.

  As shown in FIG. 1, the lumen portion 33 includes a first lumen portion 331 on the distal end side and a second lumen portion 332 on the proximal end side.

  The first lumen 331 is set so that the cross-sectional area thereof is substantially equal to or slightly larger than the cross-sectional area (maximum) of the distal end portion 53 of the hub 52. The second lumen 332 is set so that the cross-sectional area thereof is substantially equal to or slightly larger than the cross-sectional area (maximum) of the base end portion 54 (protrusion portion 541).

  When the puncture needle 5 moves relative to the casing 3, the distal end portion 53 of the hub 52 moves along the inner surface of the first lumen portion 331, and the protrusion 541 of the hub 52 moves to the second lumen portion 332. Move along the inner surface.

  With such a configuration, when the puncture needle 5 moves with respect to the casing 3, the casing 3 is provided at two locations of the tip portion 53 and the protrusion 541 of the hub 52, that is, at two locations in the longitudinal direction of the puncture needle 5. Supported by For this reason, the puncture needle 5 can move smoothly with respect to the casing 3 and is prevented from shaking with respect to the casing 3 and moves in the distal direction with high straightness. Thereby, the increase in the patient's pain accompanying the blurring of the needle tip 511 of the needle body 51 can be suitably prevented.

  Further, since the shape (cross-sectional area) of the first lumen portion 331 and the shape (cross-sectional area) of the second lumen portion 332 are different, the step portion 34 is formed at the boundary portion of the casing 3. Yes. For this reason, when the puncture needle 5 moves in the distal direction, the protrusion 541 of the hub 52 contacts the stepped portion 34. As a result, the movement of the puncture needle 5 is stopped, and the protruding length of the needle tip 511 of the puncture needle 5 from the casing 3 can be regulated. Can be prevented.

  In addition, a fitting portion 35 having a reduced diameter with respect to the inner diameter of the first lumen portion 331 is formed at the proximal end portion of the first lumen portion 331. As described above, the vicinity of the distal end of the distal end portion 53 of the puncture needle 5 is fitted into the fitting portion 35. Thereby, the puncture needle 5 is fixed to the casing 3 in the unused tip 2.

  When the unused tip 2 is mounted on the puncture device 1 and a predetermined operation is performed with the fingertip pressed against the tip of the tip 2, the puncture needle 5 is moved in the distal direction by the operation of the puncture means 46 of the puncture device 1. Move towards. At this time, the fitting between the fitting portion 35 and the vicinity of the tip of the tip portion 53 of the puncture needle 5 is released. Then, the needle tip 511 of the puncture needle 5 protrudes from an opening 421 of the puncture device 1 described later. The fingertip is punctured by the protruding needle tip 511, and blood comes out (bleeds) from the punctured site.

  When the casing 3 is moved in the distal direction to remove the tip 2 from the puncture device 1 after use, the puncture needle 5 connected to the holder portion 464 moves relatively to the proximal end side, and the fitting portion 35 The tip 53 is re-fitted. At the same time, the fitting between the connecting portion 542 of the hub 52 and the holder portion 464 of the plunger 461 is released, and the tip 2 is removed from the puncture device 1. In the used tip 2, the needle tip 511 is positioned closer to the tip side than the position of the needle tip 511 of the unused tip 2 (see FIGS. 1 and 4). That is, in the tip 2, the position of the puncture needle 5 with respect to the casing 3 differs between the unused one and the used one.

  As the constituent materials of the casing 3 and the hub 52 of the puncture needle 5 described above, for example, ABS resin, polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyvinylidene chloride resin, polyphenylene oxide, thermoplastic polyurethane, poly Examples include thermoplastic resins such as methyl methacrylate, polyoxyethylene, fluororesin, polycarbonate, polyamide, acetal resin, acrylic resin, and polyethylene terephthalate, and thermosetting resins such as phenol resin, epoxy resin, silicone resin, and unsaturated polyester. It is done. Moreover, various ceramic materials, various metal materials, etc. can also be used for these constituent materials, for example.

Next, the puncture device 1 will be described.
As shown in FIGS. 11 to 13, the puncture device 1 includes a device main body 4, a holding member 43 that houses and holds the puncture means 46, a stopper 6, a measurement means 7, a control means 48, and a display unit 47. And a battery (power supply unit) 100. Hereinafter, the configuration of each unit will be described.

  The apparatus main body 4 has a box shape, in which a holding member 43, a stopper 6, a measuring unit 7, a control unit 48, a display unit 47, and a battery (power supply unit) 100 are housed (provided). ing).

  As shown in FIGS. 11 and 12, an opening 421 that penetrates the inside and outside of the apparatus main body 4 is formed in the distal end surface 42 of the apparatus main body 4. The opening 421 is formed corresponding to the cross-sectional shape of the chip 2. The chip 2 is loaded (attached) to the loading portion 41 formed at the distal end portion of the holding member 43 through the opening 421. Thereby, it will be in the state (henceforth "chip loading state") with which chip 2 was loaded into puncture device 1.

  A hole 441 is formed in the upper surface 44 of the apparatus body 4, and an operation button 45 is provided in the hole 441.

  The puncture device 1 is configured such that the puncture means 46 is activated by pressing the operation button 45. Note that the power supply of the puncture device 1 may be turned on by pressing the operation button 45.

  Further, a display window (opening) 442 that penetrates the inside and outside of the apparatus main body 4 is formed on the base end side of the upper surface 44 of the apparatus main body 4. It is blocked by a member.

  A display unit 47 is installed below (lower) the display window 442. Therefore, various information displayed on the display unit 47 can be confirmed via the display window 442.

  The display unit 47 is configured by, for example, a liquid crystal display element (LCD). On the display unit 47, for example, power on / off, power supply voltage (remaining battery power), measurement value, measurement date / time, error display, operation guidance, and the like can be displayed.

  In addition, a control unit 48 and a battery 100 are provided below (lower) the display unit 47.

  The control means 48 is composed of, for example, a microcomputer, and controls whether or not blood has been collected and various operations of the puncture apparatus 1. Further, the control means 48 has a built-in arithmetic unit that calculates the amount of glucose (blood glucose level) in the blood based on a signal from the measurement means 7 described later.

  The battery 100 is electrically connected to the measuring unit 7, the control unit 48, and the display unit 47, and supplies electric power necessary for their operation.

  On the upper part (above) of the holding member 43, the measuring means 7 constituted by an optical block is provided facing the loading part 41. The measuring means 7 optically detects that blood is supplied (collected) to the chip 2 and optically measures the amount of glucose in the collected blood.

  Thus, the measuring means 7 has a function of detecting the collection of blood and a function of measuring the amount of glucose in the collected blood, so compared to the case where these means are provided separately, The number of parts can be reduced, the configuration can be simplified, and the number of assembly steps of the apparatus can be reduced.

  The measuring means 7 includes a block body 71, a light emitting element (light emitting diode) 72 and a light receiving element (photodiode) 73 fixed to the block body 71.

  The light emitting element 72 is electrically connected to the control means 48, and the light receiving element 73 is electrically connected to the control means 48 via an amplifier and an A / D converter (not shown).

  The light emitting element 72 is activated by a signal from the control means 48 and emits light. This light is preferably pulsed light emitted intermittently at a predetermined time interval.

  A conventionally known electrode type sensor may be used as the measuring means (for example, see WO02 / 056769).

  When the light emitting element 72 is turned on in the chip loaded state, the light emitted from the light emitting element 72 is irradiated to the blood sampling location in the chip 2, and the reflected light is received by the light receiving element 73 and subjected to photoelectric conversion. The The light receiving element 73 outputs an analog signal corresponding to the amount of received light. The signal is amplified as desired by an amplifier, converted to a digital signal by an A / D converter, and input to the control means 48. The

The control means 48 determines whether blood has been collected based on the input signal.
Further, the control means 48 performs a predetermined calculation process based on the input signal, performs correction calculation as necessary, and obtains the amount of glucose (blood glucose level) in the blood. The obtained blood glucose level is displayed on the display unit 47.

  With the measuring means 7 having such a configuration, the amount of glucose (blood glucose level) in the blood can be easily measured.

  Further, as shown in FIG. 13, the puncture means 46 is housed and held inside the holding member 43.

  The puncture means 46 includes a plunger 461 and a spring 465 that biases the plunger 461 in the distal direction.

  The plunger 461 has a bar shape as a whole and has a pair of arm portions 462. Each arm 462 is formed at the tip of the plunger 461.

  The plunger 461 is supported so as to be movable within a predetermined range in the longitudinal direction of the apparatus main body 4.

  Concave portions 463 are formed on the inner surfaces of the distal end portions of the respective arm portions 462. In the recess 463, the connecting portion 542 of the puncture needle 5 described above is detachably fitted. Thereby, the puncture needle 5 is connected (connected) to the puncture means 46 in a state where the chip is loaded. That is, the distal end portion of the arm portion 462 constitutes a holder portion 464 that connects and holds the puncture needle 5.

  As shown in FIG. 13, the stopper 6 is constituted by a block body 61, and the block body 61 has an abutment portion 62 against which the casing 3 abuts, a pressing portion 63 against which the puncture needle 5 is pressed, and an urging means. 8 is formed (integrally) with a leaf spring 81 as 8.

  The pressing portion 63 is formed such that the width of the block body 61 (vertical direction in FIG. 1) gradually decreases toward the tip.

The contact portion 62 is formed by a step formed on the tip side of the pressing portion 63.
The leaf spring 81 is formed at the tip of the contact portion 62, and one end 811 of the leaf spring 81 is fixed to the stopper storage portion 411 communicating with the loading portion 41 at the tip portion of the holding member 43. That is, the stopper 6 is fixed to the apparatus main body 4 at one end 811.

  With such a configuration of the stopper 6, the number of parts can be reduced, the configuration can be simplified, and the number of assembling steps of the apparatus can be reduced.

  When the stopper 6 is displaced between the first position and the second position, the stopper 6 is configured to rotate with respect to the apparatus main body 4 (loading portion 41) with the one end 811 as a rotation center.

  Thereby, the stopper 6 can be displaced (moved) between the first position and the second position by a simple reciprocating motion.

  Specifically, when the tip 2 is not loaded in the puncture device 1 (hereinafter referred to as “unloaded state”), the stopper 6 and the pressing unit 63 are positioned in the loading unit 41. (The position of the stopper 6 at this time is referred to as a “first position”.) In the chip loading state, the contact portion 62 and the pressing portion 63 are positioned at a position where they are retracted from the loading portion 41 (at this time). The position of the stopper 6 is referred to as a “second position”.) Accordingly, the stopper 6 can be displaced (movable) between the first position and the second position (see FIGS. 3 and 13).

  On the other hand, when the tip 2 is removed from the puncture device 1 in the tip loading state, the stopper 6 is moved from the second position to the first position by the operation of the biasing means 8 (leaf spring 81).

  Thereby, in the unloaded state, the stopper 6 can surely move (position) to the first position.

  In addition, each part which comprises the stopper 6 is not limited to being integrally formed, Each may be comprised by another member.

  Next, a case where an unused chip 2 is mounted on the puncture device 1 (loading unit 41) will be described with reference to FIGS.

  [1] First, as shown in FIG. 1, the unused chip 2 is inserted into the loading portion 41 of the holding member 43 from the base end side through the opening 421 of the apparatus main body 4.

  [2] Further, when the tip 2 is pushed in the proximal direction, the proximal end surface 543 of the hub 52 (proximal end portion 54) of the puncture needle 5 comes into contact with the pressing portion 63 of the stopper 6 at the first position.

  [3] When the tip 2 is pushed in the proximal direction, the pressing portion 63 of the stopper 6 causes the proximal end surface 543 of the puncture needle 5 by the biasing force of the leaf spring 81 as the tip 2 moves in the proximal direction. Is pressed against the base end surface 543. As a result, the pressing portion 63 starts to move from the first position to the second position (see FIG. 2).

  [4] When the tip 2 is pushed in the proximal direction from the state shown in FIG. 2, the pressing portion 63 gets over the proximal end surface 543 (the proximal end portion 54), and the edge portion 321 of the proximal end opening 32 of the casing 3. Abut.

  At this time, the connecting portion 542 (base end surface 543) of the puncture needle 5 comes into contact with the distal end surface of the holder portion 464 of the puncture means 46.

  [5] When the chip 2 is pushed in the proximal direction, the pressing portion 63 is pressed by the edge 321 of the proximal opening 32 and further moves toward the second position. And the press part 63 gets over the edge part 321 of the casing 3, and contact | abuts to the outer peripheral surface 36 of the casing 3 (refer FIG. 3). As a result, the stopper 6 is in the second position.

  At this time, the connecting portion 542 of the puncture needle 5 and the holder portion 464 of the puncture means 46 are fitted, and the mounting of the unused chip 2 to the puncture device 1 (loading portion 41) is completed.

  Thus, when the stopper 6 is in the second position, the unused tip 2 can be attached to the puncture device 1 (allowed).

  Next, with reference to FIG. 4 and FIG. 5, the case where the used chip | tip 2 is mounted | worn with the puncture apparatus 1 (loading part 41) is demonstrated.

  [1] First, as shown in FIG. 4, the used chip 2 is inserted into the loading portion 41 of the holding member 43 through the opening 421 of the apparatus main body 4 from the base end side.

  Here, in the used tip 2, as described above, the position of the puncture needle 5 with respect to the casing 3 is closer to the distal end than when it is not used (see FIGS. 1 and 4).

  [2] Further, when the chip 2 is pushed in the proximal direction, the contact portion 62 of the stopper 6 at the first position starts to enter the proximal end opening 32 of the casing 3.

  [3] When the tip 2 is pushed in the proximal direction, the proximal end surface 543 of the hub 52 is opened to the contact portion 62 of the stopper 6 at the first position before the proximal end surface 543 contacts the pressing portion 63 of the stopper 6. The edge part 321 of 32 contact | abuts and the approach of the chip | tip 2 stops (refer FIG. 5).

  Thereby, loading (mounting) of the used chip 2 into the puncture device 1 (loading unit 41) is prevented.

  As described above, the stopper 6 is configured to be displaced between the first position and the second position in accordance with the position of the puncture needle 5 with respect to the casing 3 in the chip 2.

  Thereby, when mounting of the used chip 2 to the puncture apparatus 1 is attempted, the stopper 6 is not displaced from the first position, and the mounting of the used chip 2 is blocked by the stopper 6. On the other hand, when an attempt is made to attach the unused chip 2 to the puncture device 1, the stopper 6 is displaced from the first position to the second position, and the unused chip 2 is allowed to be mounted.

  Note that the contact surface where the contact portion 62 of the stopper 6 and the edge portion 321 of the proximal end opening 32 contact is configured to be substantially perpendicular to the direction of the force with which the tip 2 is pushed in the proximal direction. It is preferable. Thereby, it is possible to reliably prevent the used tip 2 from entering in the proximal direction, and thus it is possible to more reliably prevent the used tip 2 from being attached to the puncture device 1.

  In this way, the puncture device 1 uses the difference between the position of the puncture needle 5 with respect to the casing 3 in the unused tip 2 and the position of the puncture needle 5 with respect to the casing 3 in the used tip 2. Only the chip 2 can be mounted.

  With the configuration as described above, it is possible to prevent the used tip 2 from being attached to the puncture apparatus 1 and used, and thus infection due to this misuse can be prevented.

Second Embodiment
FIG. 6 is a partial longitudinal sectional view showing a second embodiment of the puncture apparatus of the present invention.

  Hereinafter, the second embodiment of the puncture apparatus of the present invention will be described with reference to this figure, but the description will focus on the differences from the above-described embodiment, and the description of the same matters will be omitted.

This embodiment is the same as the first embodiment except that the configuration of the stopper is different.
That is, the stopper 6A shown in FIG. 6 is substantially the same as the stopper 6 except that the biasing means 8 is constituted by a compression spring 82 instead of the leaf spring 81.

  The compression spring 82 is provided between the surface 64 of the stopper 6 </ b> A on the stopper accommodating portion 411 side and the inner surface 411 a of the stopper accommodating portion 411 of the apparatus main body 4.

  With the compression spring 82 having such a configuration, the stopper 6A can reliably move (position) to the first position in the unloaded state.

  When the stopper 6A is displaced between the first position and the second position, the stopper 6A moves substantially perpendicularly to the longitudinal direction of the loading portion 41 of the apparatus body 4 (indicated by a two-dot chain line in FIG. 6). It is configured.

  Thereby, the stopper 6A can be displaced (moved) between the first position and the second position by a simple reciprocating motion.

<Third Embodiment>
FIG. 7 is a perspective view of a stopper provided in the puncture device of the present invention in the third embodiment, and FIGS. 8 and 9 are cases where an unused puncture tool is attached to the puncture device of the present invention in the third embodiment, respectively. FIG. 10 is a diagram for explaining a case where a used puncture device is attached to the puncture device of the present invention in the third embodiment.

  Hereinafter, the third embodiment of the puncture device of the present invention will be described with reference to these drawings. However, the description will focus on differences from the above-described embodiment, and the description of the same matters will be omitted.

  This embodiment is the same as the first embodiment except that the shape of the stopper, the configuration of the apparatus main body, and the configuration of the urging means are different.

  As shown in FIG. 7, the stopper 6 </ b> B includes a contact portion 65 with which the casing 3 abuts, a pressing portion 66 with which the puncture needle 5 presses, and a guide pin 67.

  Each of the contact portion 65 and the pressing portion 66 has a plate-like shape and is configured such that one ends of both portions overlap each other. That is, the contact portion 65 and the pressing portion 66 are arranged so as to form an L shape.

  The guide pin 67 includes a rod-shaped body 671 having a cylindrical shape and a flange-shaped member 672 formed concentrically with the rod-shaped body 671.

  Such a guide pin 67 is fixed (fixed) to the surface of the contact portion 65 opposite to the pressing portion 66.

  As shown in FIG. 8 (the same applies to FIGS. 9 and 10), a guide rail 49 for guiding the guide pin 67 of the stopper 6B is provided in the vicinity of the loading portion 41 of the apparatus main body 4.

  The guide rail 49 includes a first guide rail 491 and a second guide rail 492, and both guide rails intersect each other so as to form an approximately L shape.

  As described above, the L-shaped guide rail 49 is provided in the apparatus main body 4 so that the first guide rail 491, the second guide rail 492, and the intersection 493 are directed to the distal end side.

  The stopper 6B is configured to be displaced between the first position and the second position when the guide pin 67 moves along the guide rail 49 (see FIGS. 9 and 10).

  Accordingly, the stopper 6B can smoothly move (displace) between the first position and the second position.

  The stopper 6 </ b> B is urged to be positioned at the intersection 493 in the guide rail 49 in an unloaded state by the operation of the urging means 8 constituted by the tension spring 83.

  As shown in FIGS. 8 to 10, the tension spring 83 has one end 831 provided on the guide pin 67 (rod-like body 671) and the other end 832 provided on the inside of the apparatus body 4 (not shown). It is locked to. The tension spring 83 is installed so that a tensile load (biasing force) acts on the stopper 6B in a predetermined direction (in FIG. 8 (the same applies to FIGS. 9 and 10) and the arrow direction).

  With the tension spring 83 having such a configuration, the stopper 6B can be reliably positioned at the first position in the unloaded state.

  Further, the flange-like member 672 of the guide pin 67 can prevent the tension spring 83 from being easily detached from the rod-like body 671.

  Next, with reference to FIG. 8 and FIG. 9, the case where the unused chip 2 is mounted on the puncture device 1 (loading unit 41) will be described.

  [1] First, the unused chip 2 is inserted into the loading portion 41 of the holding member 43 from the base end side through the opening 421 of the apparatus main body 4.

  [2] As shown in FIG. 8, when the tip 2 is further pushed in the proximal direction, the hub 52 (base end portion 54) of the puncture needle 5 is pressed against the pressing portion 66 of the stopper 6B in the first position. Touch.

  When the tip 2 is pushed in the proximal direction from the state shown in FIG. 8, the pressing portion 66 of the stopper 6B comes into contact with the proximal end portion 54 of the puncture needle 5 as the tip 2 moves in the proximal direction. While being pressed against the base end portion 54. Accordingly, the stopper 6B starts to move from the first position to the second position along the second guide rail 492.

[3] When the chip 2 is pushed in the base end direction from the above state, the pressing portion 66 gets over the base end portion 54 and the stopper 6B becomes the second position (see FIG. 9).
At this time, the attachment of the unused chip 2 to the puncture device 1 (loading unit 41) is completed.

  Next, with reference to FIG. 10, the case where the used chip | tip 2 is mounted | worn with the puncture apparatus 1 (loading part 41) is demonstrated.

  [1] First, the used chip 2 is inserted into the loading portion 41 of the holding member 43 from the base end side through the opening 421 of the apparatus main body 4.

  [2] Further, when the chip 2 is pushed in the proximal direction, the contact portion 65 of the stopper 6B at the first position is brought into contact with the pressing portion 66 of the stopper 6B before the proximal end portion 54 of the hub 52 contacts the pressing portion 66. The edge 321 of the proximal end opening 32 abuts.

  [3] When the tip 2 is pushed in the proximal direction from the above state, the edge portion 321 of the proximal end opening 32 presses the contact portion 65 of the stopper 6B.

  [4] As shown in FIG. 10, when the chip 2 is further pushed in the proximal direction, the contact portion 65 moves along the first guide rail 491 and the guide pin 67 moves to the first guide rail 491. The stopper 6B stops moving. Thereby, the approach of the chip | tip 2 stops.

  Thereby, loading (mounting) of the used chip 2 into the puncture device 1 (loading unit 41) is prevented.

  As mentioned above, although the puncture apparatus of this invention was demonstrated about embodiment of illustration, this invention is not limited to this, Each part which comprises a puncture apparatus of the arbitrary structures which can exhibit the same function Can be substituted. Moreover, arbitrary components may be added.

  In addition, the puncture device of the present invention may be a combination of any two or more configurations (features) of the above embodiments.

  For example, the stopper in the second embodiment may be biased by a tension spring as shown in the third embodiment, or the stopper in the third embodiment may be attached by a compression spring as shown in the second embodiment. You may be forced.

  Further, blood has been described as a representative body fluid to be collected. However, in the present invention, the body fluid to be collected is not limited to this, and may be, for example, urine, sweat, lymph fluid, spinal fluid, bile, saliva, or the like.

  In addition, glucose (blood sugar level) has been described as a representative component for measurement, but in the present invention, the component for measurement is not limited thereto, and examples include various alcohols, various sugars, cholesterol, lactic acid, various It may be vitamins, hemoglobin (occult blood), uric acid, creatinine, various proteins, inorganic ions such as sodium, and the like.

  Further, the measuring means has been described as measuring (detecting) the amount of the predetermined component. However, in the present invention, the measuring means may measure (detect) the property of the predetermined component. Both of the properties may be measured (detected).

It is a figure for demonstrating the case where an unused puncture tool is used for the puncture device of this invention in 1st Embodiment. It is a figure for demonstrating the case where an unused puncture tool is used for the puncture device of this invention in 1st Embodiment. It is a figure for demonstrating the case where an unused puncture tool is used for the puncture device of this invention in 1st Embodiment. It is a figure for demonstrating the case where a used puncture tool is mounted | worn with the puncture apparatus of this invention in 1st Embodiment. It is a figure for demonstrating the case where a used puncture tool is mounted | worn with the puncture apparatus of this invention in 1st Embodiment. It is a fragmentary longitudinal cross-section which shows 2nd Embodiment of the puncture apparatus of this invention. It is a perspective view of the stopper with which the puncture device of the present invention in a 3rd embodiment is provided. It is a figure for demonstrating the case where an unused puncture tool is mounted | worn with the puncture apparatus of this invention in 3rd Embodiment. It is a figure for demonstrating the case where an unused puncture tool is mounted | worn with the puncture apparatus of this invention in 3rd Embodiment. It is a figure for demonstrating the case where a used puncture tool is mounted | worn with the puncture apparatus of this invention in 3rd Embodiment. It is an external view (plan view) of the puncture device of the present invention in the first embodiment. It is a figure which shows the internal structure of the puncture apparatus shown in FIG. It is a longitudinal cross-sectional view of the internal structure in the front-end | tip part of the puncture apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Puncture device 2 Tip 3 Casing 31 Front end opening 32 Base end opening 321 Edge portion 33 Lumen portion 331 First lumen portion 332 Second lumen portion 34 Step portion 35 Fitting portion 36 Outer peripheral surface 4 Device body 41 Loading portion 411 Stopper storage portion 411a Inner surface 42 Front end surface 421 Opening 43 Holding member 44 Upper surface 441 Hole portion 442 Display window 45 Operation button 46 Puncture means 461 Plunger 462 Arm portion 463 Recessed portion 464 Holder portion 465 Spring 47 Display portion 48 Control means 49 Guide rail 491 1 guide rail 492 second guide rail 493 intersection 5 puncture needle 51 needle body 511 needle tip 52 hub 53 distal end 54 base end portion 541 protrusion 542 connecting portion 543 base end face 6, 6A, 6B stopper 61 block body 62 Contact part 63 Press part 64 Surface 65 Contact part 66 Pressing part 67 Guide pin 671 Rod-like body 672 Flange-like member 7 Measuring means 71 Block body 72 Light-emitting element 73 Light-receiving element 8 Biasing means 81 Leaf spring 811 One end 82 Compression spring 83 Tension spring 831 One end 832 The other end 100 Battery

Claims (8)

A puncture device that is used with a puncture device comprising a casing and a puncture needle in the casing,
An apparatus body having a loading unit for loading the puncture device;
A stopper provided on the apparatus main body and having a contact portion with which the casing contacts and a pressing portion with which the puncture needle presses;
The stopper is displaceable between a first position in the loading unit and a second position retracted from the loading unit;
When the used puncture device is inserted into the loading portion, the casing comes into contact with the contact portion of the stopper at the first position, whereby the puncture device is loaded into the loading portion. Blocked,
When the unused puncture device is inserted into the loading portion, the puncture needle presses the pressing portion of the stopper at the first position, and the stopper is moved from the first position to the second position. The puncture apparatus is configured to allow the puncture device to be loaded into the loading portion by being displaced to the position.   The puncture device according to claim 1, wherein the stopper is configured to rotate with respect to the device main body when the stopper is displaced between the first position and the second position.   The puncture device according to claim 1, wherein the stopper is configured to move substantially perpendicularly to a longitudinal direction of the loading portion when the stopper is displaced between the first position and the second position. The stopper has a guide pin,
The apparatus main body has a guide rail for guiding the guide pin,
The puncture device according to claim 1, wherein the stopper is configured to be displaced between the first position and the second position when the guide pin moves along the guide rail.   The puncture device according to any one of claims 1 to 4, further comprising an urging unit that urges the stopper to move from the second position to the first position.   The puncture device according to any one of claims 1 to 5, wherein the device main body is provided with a measuring means for measuring the amount and / or property of a predetermined component in the body fluid. A puncture device that is used with a puncture device comprising a casing and a puncture needle in the casing,
When not in use, the puncture needle is fixed to the casing, and when used, the puncture needle is attached to the casing so that the puncture needle is released from being fixed to the casing. A puncture apparatus characterized in that only the unused puncture device can be mounted by utilizing the difference in the position of the puncture needle. An apparatus main body having a loading unit for loading the puncture device, and a stopper provided in the apparatus main body,
According to the position of the puncture needle with respect to the casing, the stopper has a first position for preventing loading of the used puncture device into the loading portion, and the stopper to the loading portion of the unused puncture device. The puncture device according to claim 7, wherein the puncture device is configured to be displaced to a second position where loading is permitted.

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