JP2006087834A - Puncture regulating member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a puncture regulating member for reliably preventing re-puncture in a puncturing apparatus. <P>SOLUTION: The puncture regulating member 11A is used by attachment to the puncturing apparatus 1 which includes: a puncturing apparatus body 10; a plunger 5 on which a puncture needle 23 is mounted and which can be displaced between a stand-by position where preparation to stick the puncture needle 23 into the surface of a living body is performed and a puncturing position where the puncture is performed; and a set operation part 8 which is arranged in the puncturing apparatus body 10, is relatively moved with respect to the puncturing apparatus body 10, and is operated to return the plunger 5 to the stand-by position after the puncture. The puncture regulating member 11A blocks the operation to return the plunger 5 to the stand-by position. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is used to puncture a puncture needle on the surface of a living body such as a fingertip and attach to a puncture device for collecting a necessary amount of body fluid (blood), for example, when examining a body fluid such as blood or interstitial fluid. The present invention relates to a puncture regulating member.

  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.

  The blood glucose level is measured by a blood glucose measuring device using a test paper that is colored according to the amount of glucose in blood, a biosensor that increases current according to the amount of glucose in blood, and the like.

  Prior to this measurement, the patient can collect his / her blood by puncturing the skin of the fingertip with a puncture tool equipped with a puncture needle or a knife, and then pressing the area around the puncture area with a finger or the like to remove blood. Squeezing is performed.

  Such a puncture device is configured to attach a puncture needle to a plunger accommodated in the puncture device body. The plunger can be displaced between a standby position where preparation for puncturing is performed and a puncture position positioned after puncturing is performed by pressing a firing button (operation button).

  As the plunger after the puncture is performed, a plunger that can be displaced again to the standby position by operating a set operation unit (operation unit) provided in the puncture device body is used (for example, a patent) Reference 1).

  In such a puncture device, if the puncture needle is attached, the plunger can be displaced to the standby position any number of times by operating the set operation unit, that is, the puncture can be performed any number of times Can be punctured).

  However, as described above, the puncture device can be re-punctured, but it is necessary to determine whether a used puncture needle is attached to this puncture device or whether an unused puncture needle is attached. There was a problem that it was difficult to distinguish.

JP 2000-245717 A

  An object of the present invention is to provide a puncture regulating member that can reliably prevent re-puncture of a puncture device after puncture.

Such an object is achieved by the present inventions (1) to (8) below.
(1) A puncture device main body, a plunger that is mounted with a puncture needle, a plunger that is ready to puncture the surface of the living body, and a plunger that can be displaced between the puncture position where puncture is performed, and the puncture device main body A puncture restricting member that is provided and used on a puncture device that is provided with an operation portion that moves relative to the puncture device main body to return the plunger after puncture to the standby position. ,
A puncture restricting member that prevents an operation of returning the plunger to the standby position.

  (2) The puncture restricting member according to (1), including a fixing portion that is fixed to the puncture device main body, and a blocking portion that prevents relative movement between the puncture device main body and the operation portion.

  (3) The puncture needle is attached to a distal end portion of the puncture device main body, and the operation portion is provided on a proximal end side of the puncture device main body, and extends along a longitudinal direction of the puncture device main body. The puncture restricting member according to the above (1) or (2), which is relatively moved.

(4) The operation part has a finger pad part constituted by a protruding piece,
The puncture device main body is provided with an opening from which the finger pad portion protrudes, and the finger pad portion is movable in the opening.
The puncture regulating member according to any one of (1) to (3), wherein the fixing portion is fitted into the opening, and the blocking portion is in contact with an edge portion of the opening and the finger contact portion.

  (5) In the above (4), the shape is formed by a curved plate-like body having a substantially U shape, and the fixing portion and the blocking portion are provided on the inner sides of the opposing ends, respectively. The puncture regulating member as described.

(6) The operation portion is provided at a proximal end portion of the puncture device body, and is configured to be operated by pulling in the proximal direction.
(1) to (3), wherein the blocking portion covers at least a part of the operation portion so that the fixing portion engages with the puncture device body and the operation portion cannot be gripped. The puncture restricting member according to any one of the above.

(7) The operation portion is provided at a proximal end portion of the puncture device body, and is configured to be operated by pulling in the proximal direction.
The blocking portion engages at least a part of the operation portion so that the fixing portion engages with the puncture device body and the operation portion cannot move in the proximal direction with respect to the puncture device body. The puncture restricting member according to any one of (1) to (3), which covers the puncture restricting member.

  (8) The blocking portion is provided so as to be rotatable with respect to the fixed portion, and a first position where the operation portion cannot be operated and a second position where the operation portion can be operated. The puncture restricting member according to (7), which is displaced.

  According to the present invention, since the operation unit of the puncture device after puncture is prevented from being returned to the standby position, re-puncture of the puncture device can be reliably prevented.

Hereinafter, the puncture restricting member of the present invention will be described in detail based on a preferred embodiment shown in the accompanying drawings.
<First Embodiment>
FIG. 1 is a perspective view showing a first embodiment of the puncture restricting member of the present invention. FIG. 2 is a cross-sectional view of the puncture tool to which the puncture restricting member shown in FIG. FIG. 3 is a cross-sectional view showing the puncture needle cartridge of the puncture device shown in FIG. 2, and FIG. 3 is a cross-sectional view showing the puncture needle cartridge of the puncture device shown in FIG. 7 is a cross-sectional view showing a use state of the puncture device shown in FIG.

  1 to 7, the left-right direction (longitudinal direction of the housing 3) is referred to as an "axial direction", the right side is referred to as a "base end", and the left side is described as a "tip".

As shown in FIG. 6, the puncture restricting member 11 </ b> A is used by being attached to the puncture device 1.
First, the puncture device 1 will be described.

  As shown in FIG. 2, the puncture device 1 includes a puncture device main body 10 having an elongated housing 3, a plunger 5 to which a puncture needle cartridge 2 (puncture needle 23) is attached at the tip, an adjustment unit 6, and the like. Puncture operation part (operation means) 7, set operation part (operation part) 8, coil spring (first urging means) 91 for urging the plunger 5 in the distal direction, and urging the plunger 5 in the proximal direction And a coil spring (second urging means) 92. Hereinafter, each of these configurations will be described.

  As shown in FIG. 3, the puncture needle cartridge 2 includes a tubular casing (puncture needle holder) 21 and a lancet (puncture needle hub) that is housed in the casing 21 so as to be movable in the axial direction and includes a puncture needle 23. 22 and a cap 24 that is detachably attached to the tip of the casing 21.

  The tip of the casing 21 is a part that comes into contact with the surface of a living body such as a fingertip, palm, upper arm, abdomen, thigh, or earlobe, and an opening 211 is formed. An opening 214 is formed at the base end of the casing 21.

  A pair of hub system coupling portions 213 and 213 capable of locking the large diameter portion 224 of the lancet 22 is formed on the inner peripheral surface of the casing 21 (only one hub system coupling portion 213 is shown in FIG. 3). Is listed). The end face 223 of the large-diameter portion 224 of the lancet 22 is locked to the hub system joint portion 213, thereby preventing the lancet 22 from being detached from the base end side of the casing 21.

  Further, when the end surface 222 of the lancet 22 contacts the surface 212 of the casing 21, the maximum protruding length (maximum protruding amount) of the puncture needle 23 from the opening 211 of the casing 21 is regulated.

  The lancet 22 can move in the casing 21 in the axial direction between a position where the end surface 222 abuts on the surface 212 and a position where the end surface 223 abuts on the hub system coupling portion 213.

  As shown in FIG. 2 (the same applies to FIGS. 4 to 7), the housing 3 includes a housing body 30 and a cap-like member 4 provided at the base end of the housing body 30. The housing 3 also has a function as a grip when using the puncture device 1.

  The housing 3 has a hollow portion 31 opened at the distal end. The hollow portion 31 includes a plunger 5, a coil spring 91 that biases the plunger 5 toward the distal end, and a biasing force against the plunger 5 toward the proximal end. A puncture mechanism having a coil spring 92 is installed.

  A casing 21 of the puncture needle cartridge 2 is detachably attached to the distal end portion of the housing 3. That is, when the puncture needle cartridge 2 is attached to the puncture device main body 10, the base end portion of the casing 21 is inserted into the distal end portion of the housing main body 30.

  Further, an elastically deformable plate-like puncture operating portion 7 and an index 33 are provided on the upper side of the housing body 30 in FIG. The index 33 is arranged on the proximal end side of the puncture operation unit 7.

  An operation button 71 having a protrusion 711 protruding downward in FIG. 2 is formed at the tip of the puncture operation unit 7. An opening 32 larger than the projection 711 and smaller than the operation button 71 is formed at a position corresponding to the projection 711 of the housing body 30.

  A pair of elongated holes 34 are formed on the base end side of the index 33 of the housing body 30 along the circumferential direction. One long hole 34 is disposed on the upper side in FIG. 2, and the other long hole 34 is disposed on the lower side in FIG. 2.

  The plunger 5 is installed in the housing 3 so as to be movable in the axial direction. That is, the plunger 5 is configured to be able to be displaced to a standby position (see FIG. 6) and a puncture position (see FIG. 7) described later.

  This plunger 5 has a cylindrical mounting portion 51 at the tip portion to which the lancet 22 of the puncture needle cartridge 2 is detachably mounted. That is, when the puncture needle cartridge 2 is mounted on the puncture tool body 10, the proximal end portion of the puncture needle 23 is inserted into the distal end portion of the mounting portion 51. At this time, the tip 513 of the mounting portion 51 and the end surface 223 of the puncture needle 23 abut (see FIG. 6).

  Moreover, the plunger 5 has the 1st protrusion 56 erected in the base end part toward the lower side in FIG.

  In addition, the plunger 5 has a pair of rod-like projecting portions 52, 52 erected toward the base end side at the base end portion. A protrusion 521 is formed. One protrusion 52 is disposed on the upper side in FIG. 2, and the other protrusion 52 is disposed on the lower side in FIG.

  Further, on the upper side of the plunger 5 in FIG. 2, a rod-like lock member 53 that is elastically deformable is provided. The lock member 53 is disposed on the proximal end side of the mounting portion 51.

  A locking portion 531 having a protrusion 532 protruding upward in FIG. 2 is formed at the tip of the lock member 53.

  In a state where preparation (set) for puncture described later is completed, the projection 532 of the locking portion 531 is formed in the opening 32 of the housing body 30 in a state where the plunger 5 is biased toward the housing 3 by the coil spring 91. As a result, the lock member 53 is locked to the housing 3 (see FIG. 6). The position of the plunger 5 at this time is referred to as a “standby position”.

  In addition, ring-shaped flanges 54 and 55 are formed on the outer peripheral surface of the plunger 5. The flange 55 is disposed on the proximal end side with respect to the flange 54.

  When the plunger 5 moves, each of the flanges 54 and 55 slides on the inner peripheral surface of the housing body 30, whereby the posture of the plunger 5 is maintained.

  In addition, the proximal end portion of the flange 55 functions as a spring seat with which the distal end side of the coil spring 91 abuts. A tubular adjustment portion (adjustment dial) 6 is installed at the base end portion of the housing body 30 and at the distal end side of the cap-shaped member 4 so as to be rotatable in the circumferential direction of the housing body 30.

  A pair of puncture depth control plates 61 and 61 are formed on the inner peripheral surface of the adjustment unit 6. These puncture depth control plates are formed with ring-shaped support portions (second protrusions) 611 that come into contact with the protrusions 56 of the plunger 5 during puncturing. The pair of puncture depth control plates 61 and 61 are respectively inserted into the pair of long holes 34 and 34 of the housing main body 30 described above, and the puncture depth control plate 61 is located in the housing main body 30.

  The puncture depth control plates 61 and 61 are disposed so as to face each other with the center of the support portion 611 interposed therebetween. Further, the support portion 611 is disposed concentrically with the housing body 30 in the middle of the adjustment portion 6 in the axial direction.

  The puncture depth control plate 61 has a portion in which the axial position of the contact surface that contacts the protrusion 56 of the plunger 5 is different, whereby the lancet 22 (needle tip 231) is applied to the living body surface. The puncture depth (= the amount of protrusion from the opening 211 of the lancet 22) can be adjusted.

  As shown in FIG. 2, the set operation unit 8 (set operation unit main body 80) is installed in the cap-shaped member 4 (the base end side of the puncture device main body 10) so as to move in the axial direction.

  At the tip of the cap-shaped member 4, a ring-shaped rib 41 with which the tip of the setting operation unit 8 abuts is formed.

  Further, a head (position restricting means) 42 is formed at the base end of the cap-shaped member 4. When the set operation unit 8 is operated, the base end of the set operation unit 8 comes into contact with the head portion 42 to prevent the set operation unit 8 from moving in the base end direction.

  Further, long holes (openings) 43 are formed on the upper side and the lower side in FIG. 2 of the cap-like member 4 (puncture device body 10), respectively.

  The set operation unit 8 includes a cylindrical set operation unit main body 80 that houses the coil spring 92.

  A ring-shaped rib 81 is formed at the tip of the set operation unit main body 80. A portion on the proximal end side of the rib 81 functions as a spring seat with which the distal end side of the coil spring 92 abuts.

  2 on the upper and lower sides in FIG. 2 of the base end portion of the set operation portion main body 80 (set operation portion 8), respectively, are finger rest portions configured by protruding pieces protruding from the corresponding long holes 43 of the cap-like member 4. (Fingering portion) 82 is formed. The upper finger contact part 82 in FIG. 2 protrudes from the long hole 43 to the upper side (outer side) in FIG. 2, and the lower finger contact part 82 in FIG. 2 extends from the long hole 43 to the lower side (outer side) in FIG. It protrudes. Each finger rest 82 moves in the long hole 43 as the set operation unit main body 80 moves.

  Further, a ring-shaped spring receiving member 93 having a spring seat on the front end side is installed in the set operation unit 8 so as to be movable in the axial direction.

  When the puncture needle cartridge 2 is not attached to the puncture tool body 10, the coil spring 92 is inserted between the spring receiving member 93 and the rib 81 in a substantially unloaded state (natural length). The coil spring 92 is located on the proximal end side with respect to the coil spring 91. Further, the spring constant of the coil spring 92 is smaller than the spring constant of the coil spring 91.

  The spring receiving member 93 is locked by a pair of protrusions 521 and 521 in a state where the pair of protrusions 52 and 52 of the plunger 5 are inserted.

  The conditions such as the spring constants and the axial lengths of the coil springs 91 and 92 are set so that the lancet 22 can be reliably punctured, that is, the lancet 22 is reliably placed from the opening 211 of the casing 21 at the time of puncture. It is set so that the fixed amount protrudes and then the lancet 22 is securely stored in the casing 21.

  As described above, the puncture restricting member 11A is attached (attached) to the puncture device 1.

  As shown in FIG. 1, the puncture restricting member 11A is formed of a curved plate-like body having a substantially U shape. Claws 112 are formed on the inner sides of the opposite end portions 111 of the puncture regulating member 11A.

  In a state where the puncture regulating member 11A is attached to the puncture device 1 (hereinafter, this state is referred to as “attached state”), each of the claws 112 has edge portions along the axial direction of the long holes 43, respectively. Will be fitted. Thereby, the puncture regulating member 11A is securely fixed to the puncture device body 10. Accordingly, the side surface 113 functions as a fixing portion for fixing to the puncture restricting member 11A puncture device main body 10.

  Further, as shown in FIG. 6, in the attached state, the end surfaces 114a and 114b facing the axial direction of each nail 112 are respectively the base end surface 821 of the finger rest 82 and the front end surface 421 (long hole) of the head 42. 43, the base end side edge portion 43). This reliably prevents (regulates) the set operation unit 8 from moving in the proximal direction. Therefore, the end surfaces 114a and 114b function as a blocking unit for blocking the movement of the set operation unit 8.

  In addition, it is preferable that the connection part 115 which connects both the nail | claws 112 has elasticity. Thereby, in the attached state, the connecting portion 115 urges each claw 112 inward by its own elastic force. For this reason, the puncture restricting member 11A holds the puncture device body 10, and the puncture restricting member 11A can be more reliably (strongly) fixed.

  In addition, since the puncture regulating member 11A has a simple shape (configuration) in this way, in the attached state, for example, the outer shape of a puncture tool that has conventionally existed (see, for example, Japanese Patent Laid-Open No. 2000-245717). An influence (for example, an external shape becomes extremely large) can be suppressed as much as possible.

In addition, the puncture restricting member 11A can be easily and reliably attached (fixed) to the puncture device 1 by a simple operation of fitting the claw 112 into the long hole 43.
Next, a method of using the puncture device 1 and the puncture restricting member 11A will be described.

[1] First, an unused puncture needle cartridge 2 is attached to the tip of the puncture device 1. That is, until the rib 215 of the casing 21 abuts on the tip 35 of the housing 3, the base end of the casing 21 is fitted into the tip of the housing 3, and the lancet 22 is attached to the tip of the mounting portion 51 of the plunger 5. Insert the base end of.

  At this time, as described above, since the large-diameter portion 224 of the lancet 22 is locked to the hub engaging portion 213 of the casing 21, the lancet 22 cannot move in the distal direction unless a force exceeding a predetermined value is applied. In addition, the flange 55 of the plunger 5 is in contact with the tip of the coil spring 91.

  By setting the force for moving the large-diameter portion 224 of the lancet 22 from the hub engaging portion 213 to be larger than the force for compressing the coil springs 91 and 92, the lancet 22 is attached to the distal end portion of the mounting portion 51 of the plunger 5. At the same time, the plunger 5 can be moved in the proximal direction against the elastic force of the coil springs 91, 92, and the protrusion 532 of the locking portion 531 in the lock member 53 of the plunger 5 can be operated. Is inserted into the opening 32 of the housing 3, the plunger 5 is placed at the standby position, the preparation (set) for puncturing is completed, and the lancet 22 is pushed in the proximal direction, whereby the large-diameter portion 224 of the lancet 22 is pushed. Moves from the hub engaging portion 213 and is released from the engagement with the hub engaging portion 213. The puncture needle cartridge 2 stops when the proximal end side surface of the rib (flange) 215 comes into contact with the distal end 35 of the housing body 30.

  As a result, the mounted portion 293 of the lancet 22 can be reliably (easy) fitted into the mounting portion 51 of the plunger 5. In addition, preparation for puncture can be performed easily, quickly and reliably.

  In the puncture device main body 10 in a state where the puncture needle cartridge 2 is not mounted, the lock member 53 of the plunger 5 is brought into contact with the inner peripheral surface of the housing 3 by the protrusion 532 of the locking portion 531, as shown in FIG. Displaced (elastically deformed) to the middle right. That is, the locking portion 531 is biased upward in FIG. 5 by the elastic force of the lock member 53.

  The attachment of the puncture needle cartridge 2 may be performed after the cap 24 is removed from the puncture needle cartridge 2, but is preferably performed with the cap 24 mounted, and is performed while pressing the cap 24 toward the proximal end side. Is more preferable.

  When the puncture needle cartridge 2 is mounted with the cap 24 mounted, the cap 24 is removed from the puncture needle cartridge 2 after the puncture needle cartridge 2 is mounted, preferably immediately before puncturing.

[2] The puncture depth to the living body surface by the lancet 22 (needle tip 231) is adjusted as necessary. That is, the puncture depth on the surface of the living body by the lancet 22 is set to the puncture depth according to the individual difference of the blood sampler and the puncture site.

  As a reference for setting the puncture depth, for example, the puncture depth at which a minimum blood volume necessary for blood glucose measurement can be obtained can be used. Thereby, the pain at the time of puncture can be suppressed to the minimum necessary.

  Since the puncture depth is set once, it does not need to be reset every time blood is collected, so that the operation is not time-consuming.

[3] After the tip of the casing 21 of the puncture needle cartridge 2 is pressure-bonded to a predetermined part, for example, a living body surface such as a fingertip, the operation button 71 of the puncture operation unit 7 is pressed (pressed downward in FIG. 6).

  When the operation button 71 is pressed, as shown in FIG. 7, the projection 711 presses the projection 532 of the locking portion 531, whereby the lock member 53 is elastically deformed, and the locking portion 531 is lower in FIG. Is disengaged (released) from the edge facing the opening 32 of the protrusion 532 of the locking portion 531.

  On the other hand, the puncture operation unit 7 is elastically deformed, and when the finger is released from the operation button 71, the puncture operation unit 7 that has been elastically deformed returns to its original shape due to its elastic force.

  When the locking of the locking portion 531 is released, as shown in FIG. 7, the compressed coil spring 91 is extended by its elastic force, the plunger 5 moves in the distal direction, and the puncture needle 23 is moved to the casing 21. It projects from the opening 211 and punctures the surface of the living body. At this time, the plunger 5 is displaced from the standby position to the puncture position.

  Further, when the plunger 5 moves in the distal direction, the coil spring 91 and the flange 55 are separated in the middle of the movement, and the coil spring 92 is compressed. The plunger 5 is moved in the proximal direction with respect to the housing 3 by the coil spring 92. To be energized.

  In this case, as described above, since the spring constant of the coil spring 91 is larger than the spring constant of the coil spring 92, the plunger 5 moves to the distal end side against the elastic force of the coil spring 92, and the living body surface is moved by the puncture needle 23. Can be punctured.

  Further, the coil spring 91 returns to the natural length after being separated from the flange 55, and does not urge the plunger 5 in either the front end or the base end.

  After the puncture needle 23 punctures the living body surface, as shown in FIG. 2, the compressed coil spring 92 is extended by its elastic force, the plunger 5 moves in the proximal direction, and the puncture needle 23 is moved from the living body surface. The puncture needle 23 comes out and is stored (stored) in the casing 21. That is, the state returns to the state shown in FIG. Thus, the puncture needle 23 does not protrude from the opening 211 of the casing 21 except at the time of puncture, so that the skin and the like are not accidentally damaged, and infection can be prevented. high.

[4] After puncturing, the puncture device 1 is separated from the surface of the living body, and blood on the puncture site is collected. The blood can be collected, for example, by supplying blood directly onto the test paper or sucking it through a thin tube and supplying it to the test paper.

[5] When the puncture restricting member 11A is not attached to the puncture device 1 (hereinafter, the puncture device 1 in this case is referred to as “non-attached puncture device”), The plunger 5 can be returned to the standby position again by operating the set operation unit 8 again based on the above operation.

  As shown in FIGS. 4 and 5, a finger is applied (hanged) to the finger contact portion 82 of the set operation portion 8, and the set operation portion 8 is against the housing 3 against the elastic force of the coil springs 91 and 92. Move to the end. Then, when the base end (base end face 821) of the set operation unit 8 comes into contact with the head part 42 (tip end face 421) of the housing 3, the finger is released from the finger rest part 82.

  In this case, first, as shown in FIG. 4, the coil spring 92 having a small spring constant is compressed, and then, as shown in FIG. 5, the coil spring 91 having a large spring constant is compressed, and this coil spring 91 is compressed. Accordingly, the plunger 5 moves in the proximal direction.

  As shown in FIG. 5, when the setting operation portion 8 moves until the base end thereof comes into contact with the head portion 42 of the housing 3, the protrusion 532 of the locking portion 531 in the lock member 53 of the plunger 5 opens the opening 32 of the housing 3. The lock member 53 that has been elastically deformed is returned to its original shape by its elastic force, the projection 532 is inserted into the opening 32 of the housing 3, and the projection 532 abuts on the projection 711 of the operation button 71. (Or face to face).

  Then, when the finger is released from the finger rest part 82, as shown in FIG. 6, the protrusion 532 of the locking part 531 comes into contact with the edge on the tip side facing the opening 32 of the housing 3, so that the locking part 531 is It is locked (locked) with respect to the housing 3, whereby the compressed state of the coil spring 91, that is, the state in which the plunger 5 is urged toward the distal end with respect to the housing 3 by the coil spring 91 is held and is set again at the standby position. Is done.

  On the other hand, when the finger is released from the finger contact portion 82, the compressed (compressed) coil spring 92 is extended by its elastic force, as shown in FIG. It moves to the front end side until it abuts against the rib 41. Further, the coil spring 92 returns to the natural length and does not urge the plunger 5 in either the front end or the base end.

In this state, preparation (set) for puncturing the living body surface with the puncture needle 23 is completed.
Then, the puncture tool in the non-attached state can be re-punctured by the operation [3].

  However, puncture restricting member 11A is attached to puncture device 1. This prevents the set operation unit 8 from being operated again, i.e., returning the plunger 5 to the standby position again, so that the puncture instrument 1 is reliably prevented from performing re-puncture.

  Accordingly, since the puncture needle 23 attached to the puncture device 1 with the plunger 5 in the standby position can be easily recognized as unused, it is reliably prevented that re-puncture is performed. .

  The case where the puncture restricting member 11A is attached to the puncture tool 1 before the puncture needle cartridge 2 is mounted has been described above. However, the puncture restricting member 11A is attached to the non-attached puncture tool after the operation [1]. You can also.

Second Embodiment
FIG. 8 is a cross-sectional perspective view showing a second embodiment of the puncture restricting member of the present invention, and FIG. 9 is a side view showing a use state of the puncture restricting member shown in FIG. 8 and 9, the right side is described as “base end” and the left side is described as “tip”.

  Hereinafter, the second embodiment of the puncture restricting member of the present invention will be described with reference to these drawings. However, the difference from the above-described embodiment will be mainly described, and description of similar matters will be omitted.

  This embodiment is the same as the first embodiment except that the shape of the puncture restricting member is different from the shape of the setting operation portion of the puncture device.

  As shown in FIG. 9, in the puncture device 1 ', a set operation portion 8' is provided at the proximal end portion of the puncture device main body (main body assembly) 10 '. The setting operation portion 8 ′ includes a gripping portion (knob cap) 83 that can come into contact with the proximal end of the puncture device body 10 ′, and a slide that protrudes from the distal end of the gripping portion 83 and slides within the puncture device body 10 ′. Part (inner knob) 84.

  The set operation unit 8 ′ having such a configuration is configured to be operated by pulling in the proximal direction with respect to the puncture tool main body 10 ′ (see FIG. 9B). Thereby, the plunger 5 can be positioned at the standby position.

  As shown in FIG. 8, the puncture regulating member 11B has a bottomed cylindrical shape. At the edge of the opening of this puncture regulating member 11B, a ring-shaped fixing portion 116 is formed so as to protrude.

  As shown in FIG. 9D, in the attached state, the inner peripheral surface 116a of the fixing portion 116 frictionally engages with the outer peripheral surface 101 of the puncture device body 10 '. This prevents the puncture regulating member 11B from being detached from the puncture device 1 '(puncture device body 10').

  Similarly, in the attached state, a portion closer to the base end than the fixing portion 116 (hereinafter, this portion is referred to as “regulator member main body 117”) cannot hold the grip portion 83 (set operation portion 8 ′). Thus, the entire gripping portion 83 is covered. That is, in the attached state, the grip portion 83 is housed in the regulating member main body 117.

  This prevents the set operation unit 8 'from being operated. Therefore, the regulating member main body 117 functions as a blocking unit that blocks the movement of the set operation unit 8 ′.

  The puncture regulating member 11B is not limited to the fixing portion 116 being frictionally engaged with the puncture device main body 10 ′. For example, the puncture regulation member 11B is ring-shaped (along the circumferential direction) on the outer peripheral surface 101 of the puncture device main body 10 ′. And a recessed portion, and the fixing portion 116 may be engaged with the recessed portion.

  Next, a method of using the puncture device 1 'and the puncture restricting member 11B will be described. The use method (operation method) of the puncture device 1 'is the same as that of the first embodiment except that the operation method for the set operation unit 8' is different.

[1] The puncture device body 10 ′ is held with one hand, and the holding portion 83 is held with the other hand. From this state (see FIG. 9A), as shown in FIG. 9B, the grip portion 83 is pulled in the proximal direction. Thereby, the plunger 5 is located in the standby position.

  Thereafter, when the other hand is released from the grip portion 83, the set operation portion 8 'returns to the state shown in FIG. 9C by the biasing force of the coil spring installed in the puncture device body 10'.

[2] As shown in FIG. 9D, the puncture regulating member 11B is attached to the puncture device 1 ′.
[3] Next, puncture is performed by pressing an operation button 71 (not shown in FIG. 9).

  Thus, since the puncture restricting member 11B is attached to the puncture device 1 ′, the set operation portion 8 ′ after puncture cannot be operated, and thus the plunger 5 is prevented from returning to the standby position again. can do. Therefore, the puncture device 1 'reliably prevents re-puncture.

  When the plunger 5 can be positioned at the standby position by mounting the puncture needle 23, the puncture restricting member 11B can be attached to the puncture device 1 'before the puncture needle 23 is mounted.

<Third Embodiment>
10 is a perspective view showing a third embodiment of the puncture restricting member of the present invention, FIG. 11 is a sectional view taken along line AA in FIG. 10, and FIGS. 12 and 13 are puncture restrictors shown in FIG. It is a side view which shows the use condition of a member. In FIGS. 10, 12, and 13, the right side is described as “base end” and the left side is described as “tip”.

  Hereinafter, the third embodiment of the puncture restricting member 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 description of similar matters will be omitted.

  This embodiment is the same as the second embodiment except that the shape of the puncture restricting member is different.

As shown in FIG. 10, the puncture restricting member 11C includes a fixing portion 118 that is fixed (engaged) to the puncture device body, a blocking portion 119 that prevents (impossible) the movement of the set operation portion 8, and a fixing portion. 118 and a connecting portion 120 that connects the blocking portion 119 to each other.
The fixed part 118 is made of an elastic material.

  The fixing portion 118 is formed so that a long plate-like body is curved in a ring shape and the end portions 118a are overlapped in the radial direction (plate thickness direction). Thereby, the magnitude | size of the internal diameter of the fixing | fixed part 118 can be changed.

  In the natural state, the inner diameter of the fixing portion 118 is set to be slightly smaller than the outer shape of the puncture device body 10 '. Thereby, in the attached state, the inner diameter of the fixing portion 118 is increased, and the fixing portion 118 tightens the puncture tool body 10 ′ by the elastic force of the fixing portion 118 itself. By this tightening, the fixing portion 118 is securely fixed by the puncture device body 10 '.

  The connecting part 120 has a substantially square shape. The connecting portion 120 is fixed (fixed) at two different locations on the outer periphery of the fixing portion 118. Moreover, the outer surface 120a in each connection part 120 has faced the mutually opposite direction.

  Moreover, the hole 121 is provided in one connection part 120 (right side in FIG. 10). The hole 121 accommodates a locking member 122 and a coil spring 123 that biases the locking member 122 outward (right side in FIG. 11).

  The blocking portion 119 has a U-shape and is bridged between the connecting portions 120.

  Rotating shafts 124 that rotate with respect to the connecting portion 120 (fixed portion 118) are provided inside the both end portions 119a of the blocking portion 119, respectively. Each rotating shaft 124 is inserted through a bearing 125 provided at a substantially central portion of the connecting portion 120. Accordingly, the blocking unit 119 can rotate with respect to the fixed unit 118.

  Moreover, since the blocking part 119 is rotatable in this way, the blocking part 119 can be displaced to the first position and the second position.

  In the first position, the blocking portion 119 stands with respect to the fixed portion 118 so as to be substantially parallel to the central axis of the fixed portion 118 (see FIGS. 10 and 12D). Further, at the second position, the blocking portion 119 tilts approximately 90 degrees from the first position (see FIG. 13A).

  In the attached state shown in FIG. 12D, the blocking portion 119 in the first position covers the longitudinal direction of the grip portion 83 (set operation portion 8 ') in a strip shape. Thereby, the set operation part 8 'cannot move with respect to the puncture device body 10'.

  In the first position, a hole 126 in which the locking member 122 can be locked (inserted) is provided at a position corresponding to the locking member 122 in the blocking portion 119 (see FIG. 11). Thereby, the locking member 122 is locked in the hole 126, the rotation of the blocking portion 119 is restricted, and the blocking portion 119 can be maintained in the first position.

  To release the locking by the locking member 122, the locking member 122 is pressed against the biasing force of the coil spring 123, for example, using a pin 200 as shown in FIG. Accordingly, the locking member 122 is removed from the hole 126, and the blocking portion 119 can be rotated, that is, the blocking portion 119 can be displaced from the first position to the second position.

  Next, a method of using the puncture regulating member 11C will be described. The operation method of the puncture device 1 ′ is the same as that in the second embodiment.

[1] The puncture device body 10 ′ is held with one hand, and the holding portion 83 is held with the other hand. From this state (see FIG. 12A), as shown in FIG. 12B, the grip portion 83 is pulled in the proximal direction. Thereby, the plunger 5 is located in the standby position.

  Thereafter, when the other hand is released from the gripping portion 83, the setting operation portion 8 'returns to the state shown in FIG. 12C by the urging force of the coil spring installed in the puncture device body 10'.

[2] As shown in FIG. 12D, the puncture restricting member 11C in which the blocking portion 119 is located at the first position is attached to the puncture device 1 '.

[3] Next, puncture is performed by pressing an operation button 71 (not shown in FIG. 12).

  Thus, in the puncture device 1 ′, since the puncture restricting member 11C in which the blocking portion 119 is located at the first position is attached, the set operation portion 8 ′ after puncture cannot be operated. It is possible to prevent the plunger 5 from being returned to the standby position again. Therefore, the puncture device 1 'reliably prevents re-puncture.

  Here, the case where the unused puncture needle cartridge 2 is mounted again on the puncture device 1 ′ after use (after puncture) will be described.

[4] Remove the used puncture needle cartridge 2 from the puncture device 1 ′, and install (attach) the unused puncture needle cartridge 2.

  Next, as shown in FIG. 13A, the locking member 122 of the puncture regulating member 11C is pressed to displace the blocking portion 119 to the second position. Thereafter, the plunger 5 is again positioned at the standby position by the operation described in [1] above. As a result, the puncture device 1 ′ is ready to be re-punctured.

[5] As shown in FIG. 13D, the blocking portion 119 located at the second position is rotated and displaced again to the first position.

  Next, puncture is performed again by pressing the operation button 71 (not shown in FIG. 13).

  As described above, when the puncture needle 23 is mounted, the plunger 5 cannot be positioned at the standby position, that is, after the puncture needle 23 is mounted, in order to position the plunger 5 at the standby position, the set operation unit 8 ′ Even if the above operation is necessary, the set operation unit 8 ′ can be operated by rotating the blocking unit 119 without removing the puncture restricting member 11C from the puncture device 1 ′. The plunger 5 after puncturing can be positioned at the standby position. Thereby, if the used puncture needle cartridge 2 is replaced with an unused puncture needle cartridge 2, the puncture tool 1 'can be reused.

  As mentioned above, although the puncture restricting member of the present invention has been described with respect to the illustrated embodiment, the present invention is not limited to this, and each part constituting the puncture restricting member can have any configuration that can exhibit the same function. Can be substituted. Moreover, arbitrary components may be added.

  Moreover, although the embodiment in the case of collecting blood has been described above, the puncture device may be for collecting body fluid other than blood, such as interstitial fluid, and its use is not particularly limited.

It is a perspective view which shows 1st Embodiment of the puncture control member of this invention. It is sectional drawing of the puncture tool to which the puncture control member shown in FIG. 1 was attached. It is sectional drawing which shows the unused puncture needle cartridge shown in FIG. It is sectional drawing which shows the use condition of the puncture device shown in FIG. It is sectional drawing which shows the use condition of the puncture device shown in FIG. It is sectional drawing which shows the use condition of the puncture device shown in FIG. It is sectional drawing which shows the use condition of the puncture device shown in FIG. It is a cross-sectional perspective view which shows 2nd Embodiment of the puncture control member of this invention. It is a side view which shows the use condition of the puncture control member shown in FIG. It is a perspective view which shows 3rd Embodiment of the puncture control member of this invention. It is the sectional view on the AA line in FIG. It is a side view which shows the use condition of the puncture control member shown in FIG. It is a side view which shows the use condition of the puncture control member shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1, 1 'Puncture tool 10, 10' Puncture tool main body 101 Outer peripheral surface 2 Puncture needle cartridge 21 Casing 211 Opening 212 Surface 213 Hub engaging part 214 Opening 215 Rib 22 Lancet 221-223 End surface 224 Large diameter part 225 Corner part 23 Puncture Needle 231 Needle tip 24 Cap 241 Presser member 3 Housing 30 Housing body 31 Hollow portion 32 Opening 33 Indicator 34 Long hole 35 Tip 4 Cap-like member 41 Rib 42 Head 421 Tip surface 43 Slot 5 Plunger 51 Mounting portion 513 Tip 52 Projecting Portion 521 Protrusion 53 Lock member 531 Locking portion 532 Protrusion 54, 55 Flange 56 First protrusion 6 Adjustment portion 61 Puncture depth control plate 611 Support portion 621 Rib 7 Puncture operation portion 71 Operation button 711 Protrusion 8, 8 ′ set Operation unit 80 Set operation unit body DESCRIPTION OF SYMBOLS 1 Rib 82 Finger contact part 821 Base end surface 83 Grip part 84 Sliding part 91, 92 Coil spring 93 Spring receiving member 11A, 11B, 11C Puncture restriction member 111 End part 112 Claw 113 Side face 114a, 114b End face 115 Connecting part 116 Fixing part 116a Inner peripheral surface 117 Restriction member main body 118 Fixed portion 118a End portion 119 Blocking portion 119a End portion 120 Connecting portion 120a Surface 121 Hole 122 Locking member 123 Coil spring 124 Rotating shaft 125 Bearing 126 Hole 200 Pin

Claims (8)

A puncture device main body, a plunging needle attached to the puncture device main body, a plunger displaceable between a standby position where the puncture needle is prepared to puncture a living body surface, and a puncture position where puncture is performed, A puncture restricting member that is used by being attached to a puncture device including an operation unit that performs an operation of returning the plunger after puncture to the standby position by moving relative to the puncture device body,
A puncture restricting member that prevents an operation of returning the plunger to the standby position.   The puncture restricting member according to claim 1, further comprising: a fixing portion that is fixed to the puncture device main body; and a blocking portion that prevents relative movement between the puncture device main body and the operation portion.   The puncture needle is attached to a distal end portion of the puncture device main body, the operation portion is provided on the proximal end side of the puncture device main body, and is relative to the puncture device main body along its longitudinal direction. The puncture restricting member according to claim 1 or 2, wherein The operation part has a finger rest part constituted by a protruding piece,
The puncture device main body is provided with an opening from which the finger pad portion protrudes, and the finger pad portion is movable in the opening.
The puncture restricting member according to any one of claims 1 to 3, wherein the fixing portion is fitted into the opening, and the blocking portion is in contact with an edge portion of the opening and the finger contact portion.   The puncture regulation according to claim 4, wherein the puncture regulation is configured by a curved plate-like body having a substantially U shape, and the fixing portion and the blocking portion are provided inside the opposing end portions, respectively. Element. The operation portion is provided at a proximal end portion of the puncture device body, and is configured to be operated by pulling in a proximal direction.
4. The device according to claim 1, wherein the blocking portion covers at least a part of the operation portion so that the fixing portion engages with the puncture device main body and the operation portion cannot be gripped. 5. The puncture restricting member according to 1. The operation portion is provided at a proximal end portion of the puncture device body, and is configured to be operated by pulling in a proximal direction.
The blocking portion engages at least a part of the operation portion so that the fixing portion engages with the puncture device body and the operation portion cannot move in the proximal direction with respect to the puncture device body. The puncture restricting member according to any one of claims 1 to 3, wherein the puncture restricting member is covered. The blocking portion is provided so as to be rotatable with respect to the fixed portion, and is displaced to a first position where the operation portion cannot be operated and a second position where the operation portion can be operated. Item 8. The puncture restricting member according to Item 7.

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