JP6553445B2 - Puncture device - Google Patents

Description

  The present invention relates to a puncture device used for collecting body fluid such as blood.

  Conventionally, measuring instruments that measure specific components such as glucose and cholesterol contained in body fluids such as blood have been used. In this measurement, it is necessary to collect a predetermined amount of body fluid such as the patient's blood. As a device for collecting this body fluid, a puncture device having a puncture element has been proposed. The puncture device disclosed in Patent Document 1 includes a puncture cartridge having a puncture element, and an instrument body loaded with the puncture cartridge. The puncture cartridge is configured as a so-called disposable type that is discarded after one body fluid collection.

  When a user punctures using a puncture device, it is preferable from the viewpoint of health and the like that the puncture cartridge after use is discarded. However, due to a user's operation error or the like, there is a case where the puncturing operation is mistakenly performed in a state where the puncture device is not yet in contact with the body. In this case, since the puncture element of the puncture cartridge is not punctured at all in the human body, it is not contaminated by body fluids. However, when puncturing is performed according to a normal procedure, the puncture is configured to be performed only once. Therefore, after discarding the unstained puncture cartridge, it is forced to load a new puncture cartridge. The cartridge is wasted.

JP, 2013-121380, A

  An object of the present invention is to provide a puncture device which can be repunctured only when the user intends it.

  The puncture device provided by the present invention is a puncture device comprising a disposable puncture element and firing means for firing the puncture element, wherein the firing means is capable of firing the puncture element A re-puncture permission mode that takes a state and a firing completion state in which firing of the puncture element has been completed, and allows the firing means to return from the firing completion state to the launchable state; and A re-puncture prevention mode for preventing return from the completed state to the launchable state.

  In a preferred embodiment of the present invention, a return member that can be attached to and detached from the main body of the puncture device is further provided, and the repuncture prevention mode and the repuncture permission mode are switched by attaching and detaching the return member.

  In a preferred embodiment of the present invention, the firing means includes an elastic member that exerts an elastic force that serves as a driving force to fire the puncture element, and the elastic member has the elastic force. It is a lever to shift to the state of exerting

  In a preferred embodiment of the present invention, the return member has a user specifying information display area in which user specifying information for specifying a user is displayed.

  In a preferred embodiment of the present invention, a switching member that takes a first posture and a second posture is further provided, and the repuncture prevention mode is performed by switching the switching member between the first posture and the second posture. And the re-puncture allowance mode.

  In a preferred embodiment of the present invention, the portable electronic device further comprises a key element which is detachable and allows the switching member to shift from the first posture to the second posture.

  In a preferred embodiment of the present invention, the puncture device has a user identification information display area in which user identification information identifying a user is displayed.

  According to one aspect of the present invention, the puncture device takes the repuncture prevention mode and the repuncture possible mode. For example, normally, the puncture device is in the re-puncture prevention mode, and reuse of the puncture element is disabled. On the other hand, if an unintended puncture has been performed, the launching device can be returned from the firing complete state to the launchable state by shifting the puncture device to the re-puncture enabled mode. It is. Therefore, it is possible to reuse the puncturing element that has been formally punctured but not contaminated with body fluid or the like only when the user intends.

  Other features and advantages of the present invention will become more apparent from the detailed description given below with reference to the accompanying drawings.

1 is a perspective view of a puncture device according to a first embodiment of the present invention. It is sectional drawing which follows the II-II line | wire of FIG. It is principal part sectional drawing in alignment with the III-III line of FIG. It is a top view which shows the return member of the puncture device of FIG. It is sectional drawing which shows loading of a puncture cartridge in the puncture device of FIG. It is sectional drawing which shows the structure which the emission means took the discharge | release possible state in the puncture device of FIG. FIG. 2 is a cross-sectional view showing a configuration in which the firing means has taken a firing completion state in the puncture device of FIG. 1. It is sectional drawing which shows the repuncture permission mode which mounted | wore the return member in the puncture device of FIG. FIG. 2 is a cross-sectional view showing a configuration in which the launching unit is returned to a launchable state by a return member in the puncture device of FIG. It is sectional drawing which shows the modification of the puncture device of FIG. It is a perspective view which shows the puncture device based on 2nd Embodiment of this invention. It is sectional drawing which follows the XII-XII line | wire of FIG. It is sectional drawing which shows the state which the puncture device of FIG. 11 shifted to re-puncture permission mode. It is sectional drawing which shows the modification of the puncture device of FIG.

  Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

  1 to 3 show a lancing device according to a first embodiment of the present invention. The puncture device A1 of the present embodiment includes a device main body 1, a puncture cartridge 2, and a return member 51. The puncture device A1 is used to collect blood, which is a sample to be measured by, for example, a self monitoring of blood glucose (SMBG), from a fingertip or the like of a patient.

  In FIG. 2, the vertical direction in the figure is the loading direction N, and the lower side in the figure is defined as the rear side in the loading direction N and the upper side in the figure is defined as the front side in the loading direction N. Further, in the present embodiment, the direction in which the puncturing movable body 3 described later moves during puncturing is a direction along the loading direction N, and the loading direction N moves toward the near side. In the present invention, the loading direction and the puncturing direction may coincide with each other or may be different directions.

  The puncture cartridge 2 is a cartridge that can be punctured by the puncture device A1 by being loaded into the device body 1. The puncture cartridge 2 of the present embodiment is constituted by a puncture moving body 3 and a cartridge case 4. The puncture cartridge 2 is configured as a so-called disposable that is discarded after one or a predetermined number of punctures.

  The cartridge case 4 accommodates the puncture moving body 3 and forms most of the appearance of the puncture cartridge 2. The shape, size, and material of the cartridge case 4 are not particularly limited. In the present embodiment, the cartridge case 4 has a substantially cylindrical shape that defines a space in which the puncture moving body 3 is built. For example, a rectangular cylindrical shape or a cylindrical shape may be employed as the cylindrical specific form. As a material of cartridge case 4, resin is mentioned, for example.

  A puncture opening 42 is formed in the cartridge case 4. The puncture port 42 is provided at the end in the loading direction N front side of the cartridge case 4 and is an opening penetrating in the loading direction N. The puncture port 42 is provided for projecting a puncture element 31 (described later) of the puncture moving body 3 to the outside.

  The puncture moving body 3 is a part that moves toward a part of a patient's body from which bodily fluids are to be collected in the puncture by the puncture device A1. In the present embodiment, the puncture moving body 3 includes a puncture element 31 and a holding portion 32. The puncture element 31 is an element that is punctured into the body, and is, for example, a needle or blade made of metal. The puncture element 31 has a pointed shape toward the front side in the loading direction N (forward in the puncture direction).

  The holding portion 32 is a portion for holding the puncture element 31 and is made of, for example, a resin. The holding part 32 is located behind the tip of the puncture element 31 in the loading direction N (backward in the puncture direction). The holding portion 32 of the present embodiment has a rear end protrusion 322. The rear end protrusion 322 protrudes toward the front side in the loading direction N. The rear end projection 322 is a portion connected to a part of the instrument main body 1 described later.

  The puncture cartridge 2 may have a configuration having a cap portion that covers the puncture element 31 of the puncture moving body 3. The cap portion is for keeping the puncture element 31 in a sterile condition by covering the puncture element 31 when not in use. As an example of such a cap part, the structure formed integrally with the holding | maintenance part 32 of the puncture moving body 3, for example is mentioned. Then, for example, when the puncture cartridge 2 to be described later is loaded into the instrument body 1 or manually by the user, the cap portion is removed as appropriate.

  The instrument body 1 is loaded with the puncture cartridge 2 and occupies most of the appearance of the puncture instrument A1. The instrument main body 1 of this embodiment includes a main body case 6, firing means 7, a latch portion 81, and a return bracket 82.

  The main body case 6 holds the firing means 7 and the like, and is a part that supports the loaded puncture cartridge 2. In the present embodiment, the main body case 6 is formed in a cylindrical shape that is open on the near side in the loading direction N as a whole, and the puncture cartridge 2 is loaded toward the inner space thereof. However, the configuration of the main body case 6 is not limited to this, and any configuration that can appropriately hold the puncture cartridge 2 to be loaded may be used. Main body case 6 is made of, for example, a resin.

  The main body case 6 has a slit 61, an engagement portion 62 and a firing button 66.

  The slit 61 penetrates the side wall portion of the main body case 6 in the radial direction, and in the present embodiment, extends along the axial direction of the cylindrical main body case 6.

  As shown in FIG. 2, the engaging portion 62 is a portion protruding radially inward from the side wall portion of the main body case 6. The engaging portion 62 is for engaging with a predetermined portion of the return bracket 82.

  The firing button 66 is an operation means for the user to perform a puncturing operation. The specific configuration of the firing button 66 is not particularly limited, and in the present embodiment, a description will be given by taking a form protruding from the outer surface of the main body case 6 as an example. A specific function of the firing button 66 is, for example, a function of operating a latch portion 81 described later. As a mechanism for the firing button 66 to operate the latch portion 81, any known mechanism can be adopted, and a mechanical mechanism or an electrical mechanism combining the strength member and the elastic member may be appropriately selected. .

  The launching means 7 is for launching the puncturing moving body 3. In the present embodiment, the launching means 7 comprises an elastic member 70 and a connecting portion 71. The specific mechanism of the launching means 7 is not particularly limited, and may be a combination of an electrical structure in addition to the mechanical structure exemplified by the structure of the present embodiment. As will be described later, the launching means 7 is in a launchable state where it is possible to launch the puncturing movable body 3 and in a firing complete state where the launching of the puncturing mobile body 3 is completed.

  The elastic member 70 exerts an elastic force to move the puncturing moving body 3 of the puncturing cartridge 2 forward in the puncturing direction (the loading direction N near side). The specific configuration of the elastic member 70 is not particularly limited, and a so-called string-wound spring is employed in the present embodiment. The loading direction N rear end of the elastic member 70 is fixed to the main body case 6.

  The connection portion 71 is provided at the front end of the elastic member 70 in the loading direction N. The connecting portion 71 has a function of temporarily integrating the puncturing moving body 3 and the elastic member 7 by connecting with the rear end projection 322 of the puncturing moving body 3. Connecting portion 71 is made of, for example, metal or resin.

  The connecting portion 71 is formed with a connecting recess 711, a latch recess 712, and a flange portion 713.

  The connection recess 711 is recessed in the loading direction N and is a portion into which the rear end protrusion 322 of the puncturing moving body 3 is fitted. The latch recess 712 is a portion that is recessed in the left-right direction in the figure, which is a direction in which a part of the connection recess 711 intersects the loading direction N. The flange portion 713 is a portion that protrudes radially outward, and in the present embodiment, is provided at the end in the loading direction N of the connecting portion 71.

  The latch portion 81 is for temporarily stopping the connection recess 711 at a desired position in a state where the elastic member 70 can exert an elastic force. The specific structure of the latch part 81 is not specifically limited, In this embodiment, it consists of a member sharpened to the right in the figure in FIG. The latch portion 81 may be set at a position where the connection recess 711 is stopped by a user operation. In a process to be described later, the latch portion 81 stops the connecting portion 71 by entering the latch recess 712 of the connecting portion 71. The configuration including the latch recess 712 and the latch portion 81 is only an example of a specific structure for temporarily stopping the connection portion 71, and various known structures can be adopted as a structure for achieving the same purpose.

  The return bracket 82 is used to return the launching means 7 from the firing completion state to the launchable state only when the user intends. In the present embodiment, the return bracket 82 includes a cylindrical portion 821, a through hole 822, and an engagement lever 823. The material of the return bracket 82 is not particularly limited, and metal, resin or the like is used.

  The cylindrical portion 821 is a main portion that occupies most of the return bracket 82, and is a bottomed cylindrical member having an axial direction in the loading direction N and a bottom on the near side in the loading direction N. The through hole 822 is provided at the bottom of the cylindrical portion 821 and penetrates in the loading direction N. The connecting portion 71 is inserted through the through hole 822. Further, the flange portion 713 of the connecting portion 71 is located on the back side in the loading direction N with respect to the through hole 822. The size of the through hole 822 is smaller than the flange portion 713 while allowing most of the connecting portion 71 to pass therethrough. Therefore, the flange portion 713 is prevented from passing through the through hole 822.

  The engagement lever 823 engages with the engagement portion 62 of the main body case 6 to prevent the return bracket 82 from moving to the back side in the loading direction N. The engagement between the engagement lever 823 and the engagement portion 62 is a state in which the firing means 7 is prevented from returning from the firing completion state to the firing enabled state. A1 in this state is defined as being in the re-puncture preventing mode as referred to in the present invention.

  As long as the engagement lever 823 is a structure which can implement | achieve a repuncture prevention mode, the shape and magnitude | size are not limited at all. The engagement lever 823 of the present embodiment includes a portion that slightly protrudes radially outward from the rear end in the loading direction N of the return bracket 82, a portion that extends from the protruding portion toward the front side in the loading direction N, and a loading direction N It is configured to have a portion protruding radially outward from a portion extending to the front side. The front end portion of the engaging lever 823 in the loading direction N engages with the engaging portion 62.

  Further, a recess 824 is formed in the engagement lever 823. The recess 824 is formed so as to be recessed radially inward at a portion of the engagement lever 823 extending along the loading direction N. Since the engagement lever 823 has the above-described shape, the engagement lever 823 is engaged so that the distal end of the engagement lever 823 moves inward in the radial direction when a radially inward force is applied to the recess 824. The lever 823 is deformed.

  The return member 51 is a member for shifting the puncture device A1 from the above-described repuncture prevention mode to a repuncture enabling mode that allows the firing means 7 to return from the firing completion state to the launchable state. Further, in the present embodiment, the return member 51 is used for the operation of returning the firing means 7 from the firing completion state to the firing enabled state in the repuncture enable mode.

  The return member 51 is detachable from the instrument body 1. For this reason, the state where the return member 51 is not attached (the state shown in FIG. 2) shows the puncture device A1 in the repuncture prevention mode. As shown in FIGS. 1 and 3, the return member 51 of the present embodiment has a user identification information display area 511, an engagement portion 512, and a return convex portion 513.

  The user identification information display area 511 is an area for displaying user identification information for identifying an individual user who uses the puncture device A1. FIG. 4 is a plan view showing the return member 51. As shown in FIG. In the illustrated example, the user identification information display area 511 is configured as an area capable of drawing desired characters, symbols and figures with a general writing instrument. Also, in this example, the user's name is described as the user identification information. In addition, if user identification information is information which can specify each user in the environment where puncture instrument A1 is used, the specific structure will not be limited at all. Such user identification information includes a nickname and a patient number in addition to the name, and may further be a face photograph or a portrait. In addition, a mark that allows the user to identify the puncture device may be attached to the user specifying information display area 511. Thereby, even in the case of the repuncture enable mode, it is possible to prevent the accidental use of the puncture device used by other users.

  As shown in FIG. 3, the engaging portion 512 is for restricting the radial movement of the return member 51 with respect to the main body case 6 by engaging with the slit 61 of the main body case 6. Such a configuration is employed in order to prevent the return member 51 from becoming unstable due to the reaction force when the engagement lever 823 of the return bracket 82 is deformed by the return member 51 as will be described later. . As a mechanism for achieving such an object, a known configuration other than the engaging portion 512 can be appropriately employed.

  The return convex portion 513 is a portion that protrudes radially inward, and protrudes toward the inside of the main body case 6 in a state where the engagement portion 512 is engaged with the slit 61. As will be described later, the return convex portion 513 is a portion that fits into the concave portion 824 of the engagement lever 823 of the return bracket 82.

  Next, puncturing using the puncture device A1 will be described below with reference to FIGS. 2 and 5 to 9.

  FIG. 2 shows the use start state of the puncture device A1. The puncture cartridge 2 is not used yet. The puncture cartridge 2 is arranged on the front side N in the loading direction of the instrument main body 1 and, if necessary, the angle of the puncture cartridge 2 with respect to the instrument main body 1 is adjusted.

  Next, loading of the puncture cartridge 2 into the instrument body 1 is started. Specifically, the puncture cartridge 2 is moved in the loading direction N back with respect to the instrument body 1. As a typical loading method, the main body case 6 of the instrument body 1 is fixed by being held by one hand of the user, and the puncture cartridge 2 is moved while the cartridge case 4 of the puncture cartridge 2 is held by the other hand. Let

  As loading proceeds, the state shown in FIG. 5 is obtained. This figure shows a state in which the elastic deformation of the elastic member 7 starts as the puncture cartridge 2 is loaded. In this embodiment, the rear end protrusion 322 of the puncture moving body 3 of the puncture cartridge 2 fits into the connection recess 711 of the connection portion 71, so that the puncture movement body 3 pushes the connection portion 71 toward the back in the loading direction N. It is in a state to get. The puncturing movable body 3 and the cartridge case 4 of the puncturing cartridge 2 are connected to each other by a connecting member or the like (not shown) to such an extent as to transmit a force capable of elastically deforming the ejection means 70.

  Further, when the loading proceeds, the state shown in FIG. 6 is obtained. In the figure, the elastic member 70 of the firing means 7 is compressed and deformed by loading the puncture cartridge 2. In addition, the latch portion 81 fits into the latch recess 712 of the connecting portion 71 to temporarily prevent the connecting portion 71 and the puncture moving body 3 from moving. The position of the latch portion 81 in the loading direction N may be arbitrarily changeable by the user. The operation of fitting the latch portion 81 into the latch recess 712 may be automatically executed by a known mechanism (not shown) or may be executed by a user operation. Thereby, this launching means 7 takes the launchable state referred to in the present invention, and the puncture device A1 is in a state where puncture is possible.

  Next, the puncture port 42 of the cartridge case 4 is brought close to the body location where body fluid such as blood is to be collected. Further, the above-described connection between the puncture moving body 3 and the cartridge case 4 is released so that the puncture moving body 3 can move relative to the cartridge case 4. Subsequently, by operating the firing button 66, as shown in FIG. 7, the latch portion 81 is retracted from the latch recess 712 of the connecting portion 71. Thereby, the puncture moving body 3 rapidly moves to the front side in the loading direction N (forward in the puncture direction) together with the connecting portion 71 due to the elastic force of the elastic member 70 of the firing means 7, and the flange portion 713 of the connecting portion 71 is moved. When it comes into contact with the cylindrical portion 821 of the return bracket 82, the puncture element 31 of the puncture moving body 3 protrudes from the puncture opening 42 of the cartridge case 4, and the tip of the puncture element 31 is punctured at a predetermined location on the body. After the puncture, the resilient force of the elastic member 70 causes the firing member 7 to return to the position where the flange portion 723 as shown in FIG. 2 is separated from the return bracket 82 by a predetermined distance. The above steps complete the puncture using the puncture device A1. After the appropriate puncture for exposing the body fluid such as blood from the human body is performed, for example, the glucose concentration and the like are measured on the body fluid such as blood obtained by the puncture. Further, the used puncture cartridge 2 is removed from the puncture device A1, and the puncture cartridge 2 is discarded.

  On the other hand, it is assumed that puncturing is performed, for example, in a state in which the puncture port 42 of the cartridge case 4 is not brought close to the location of the body due to a user's operation error or the like. In this case, by shifting the puncture device A1 to the re-puncture enable mode, regular puncture can be performed again without replacing the puncture cartridge 2.

  FIG. 8 shows the puncture device A1 in which the state shown in FIG. 7 has been completed and the mode is shifted to the re-puncture enable mode. That is, the firing means 7 is in the puncture completion state since the puncture is completed. Further, a return member 51 is attached to the instrument body 1. The mounting of the return member 51 is performed by inserting the engaging portion 512 and the return convex portion 513 into the slit 61 so that the engaging portion 512 described above engages with the slit 61 of the main body case 6. By mounting the return member 51, the return convex portion 513 of the return member 51 fits into the concave portion 824 of the engagement lever 823 of the return bracket 82, and the engagement lever 823 is deformed radially inward. As a result, the engagement between the tip end of the engagement lever 823 and the engagement portion 62 of the main case 6 is released, and the return bracket 82 becomes movable in the loading direction N with respect to the main case 6. This is a transition from the repuncture prevention mode of the puncture device A1 in the present embodiment to the repuncture possible mode.

  Next, the return member 51 is moved along the slit 61 toward the back side in the loading direction N. The movement of the return member 51 to the rear side in the loading direction N integrally moves the return bracket 82, the connecting portion 71, and the puncturing moving body 3 to the rear side in the loading direction N. Thereby, the launching means 7 is returned from the firing completion state shown in FIG. 8 to the launchable state shown in FIG. Thereafter, puncturing can be performed by retracting the latch portion 81 by operating the firing button 66. During the puncturing, the return bracket 82 and the return member 51 move to the near side in the loading direction N together with the puncturing movable body 3 and the connecting portion 71. Thus, re-puncture is completed. The re-puncture in this embodiment can be performed multiple times.

  Next, the operation of the puncture device A1 will be described.

  According to the present embodiment, the puncture device A1 takes the repuncture prevention mode and the repuncture possible mode. Usually, since the puncture device A1 is in the repuncture prevention mode, the puncture cartridge 2 cannot be reused. On the other hand, when an unintended puncture has been performed, it is possible to return the firing means 7 from the firing completed state to the fireable state by shifting the puncture device A1 to the re-puncture enabled mode. Therefore, only when the user intends, the puncture cartridge 2 having the puncture element 31 that has been formally punctured but is not yet contaminated by body fluid or the like can be reused.

  Further, in the puncture device A1, by attaching the detachable return member 51, the puncture device A1 shifts from the re-puncture prevention mode to the re-puncture enable mode. Therefore, it is possible to shift the puncture device A1 to the re-puncture enable mode only when intended by the authorized user who owns the return member 51. This is suitable, for example, to prevent a person who does not sufficiently know how to use the puncture device A1 from accidentally re-punching.

  The return member 51 is provided with a user identification information display area 511. The user specifying information displayed in the user specifying information display area 511 specifies individual users. For this reason, it is clearly shown which user the return member 51 attached to the puncture device A1 belongs. Therefore, it is possible to prevent another user from accidentally using the puncture device A1 in the re-punctureable mode while the return member 51 of one user is attached.

  10 to 14 show other embodiments and modifications of the present invention. In these drawings, the same or similar elements as those in the above embodiment are denoted by the same reference numerals as those in the above embodiment.

  FIG. 10 shows a modification of the puncture device A1. The present modification includes a dummy member 51A that is attached to the puncture device A1 in the repuncture prevention mode. Similar to the return member 51, the dummy member 51A is attached to the instrument body 1 by engagement with the slit 61 of the body case 6. However, the dummy member 51 </ b> A does not have the return convex portion 513 of the return member 51. For this reason, even if the dummy member 51A is mounted, the engagement lever 823 of the return bracket 82 remains engaged with the engagement portion 62 of the main body case 6, and the puncture device A1 prevents re-puncture. Is in mode.

  In this modification, when performing normal puncturing, puncturing of the puncturing element 31 can be performed in a state where the dummy member 51A is attached. However, since the puncture device A1 at this time is in the repuncture prevention mode, repuncture is impossible. When re-puncture is desired due to an operation error or the like, the user can shift the puncture device A1 to the re-puncture mode by attaching the return member 51 described above after removing the dummy member 51A once. . Such a configuration allows the user to perform more operations in order to shift the puncture device A1 to the re-puncture mode, and the puncture device A1 is improperly put into the re-puncture mode due to user error. It is suitable for preventing migration.

  In the embodiment described above, the return member 51 is attached to a puncture device that cannot be re-punctured to shift to the re-puncture mode. However, the return member 51 is attached to the puncture device in advance, and re-puncture is possible. In the puncture device A1, the return member 51 may be removed to shift to the re-puncture disabled mode.

  11 to 13 show a puncture device according to a second embodiment of the present invention. The puncture device A2 of this embodiment includes a switching member 52 and does not use the return member 51 described above.

  The switching member 52 is a member for shifting the puncture device A1 from the repuncture prevention mode to the repuncture possible mode. The shape, size, and material of the switching member 52 are not particularly limited, but in the following, a case where the appearance is similar to that of the above-described return member 51 will be described as an example. That is, the switching member 52 has a shape that extends long in the loading direction N as a whole, and has a return convex portion 522. The return projection 522 has a function of releasing the engagement between the engagement lever 823 of the return bracket 82 and the engagement portion 62 in the same manner as the return projection 513 of the return member 51 described above.

  Further, the slit 61 of the main body case 6 of the present embodiment is configured to have an axial direction portion 611 and a circumferential direction portion 612. The axial direction part 611 is a part extended along the loading direction N like the slit 61 in the puncture device A1. The circumferential direction portion 612 is connected to the front end of the axial direction portion 611 in the loading direction N, and extends in the circumferential direction of the main body case 6.

  The switching member 52 shown by the solid line in FIG. 11 and the switching member 52 shown in FIG. 12 are in the first position in the present invention. Specifically, the switching member 52 is located at the end of the circumferential portion 612 opposite to the axial portion 611. In this case, as shown in FIG. 12, the return convex portion 522 of the switching member 52 is different in the circumferential position from the concave portion 824 of the return bracket 82. Therefore, the engagement lever 823 of the return bracket 82 and the engagement portion 62 of the main body case 6 are engaged, and the puncture device A2 in this state is the puncture device A1 shown in FIGS. 2 and 5 to 7. Is the same state. That is, the puncture device A2 in this state is in the re-puncture prevention mode referred to in the present invention. With the puncture device A2 in the re-puncture prevention mode, only one puncture is permitted for one puncture cartridge 2.

  On the other hand, the switching member 52 shown by a two-dot chain line (virtual line) in FIG. 11 and the switching member 52 shown by a solid line in FIG. 13 have a second posture as referred to in the present invention. Specifically, the switching member 52 is located at the end of the circumferential direction portion 612 on the axial direction portion 611 side. As shown in FIG. 13, in the present embodiment, an inclined surface 824 a is formed in the recess 824 of the engagement lever 823, and an inclined surface 522 a is formed in the return projection 522. When the switching member 52 moves from the first posture to the second posture, the inclined surface 522a of the return convex portion 522 looks like riding on the inclined surface 824a of the concave portion 824. When the switching member 52 takes the second posture, the return convex portion 522 comes into contact with the concave portion 824 so that the return convex portion 522 faces directly, and the return convex portion 522 moves the concave portion 824 inward in the radial direction. As a result, the engagement lever 823 is deformed radially inward, and as shown in FIG. 13, the engagement between the tip of the engagement lever 823 and the engagement portion 62 is released. The puncture device A2 in this state is in the same state as the puncture device A1 shown in FIGS. 8 and 9, and has shifted to the re-puncture mode. Thereafter, by operating the switching member 52 in the same manner as the operation of the return member 51, it is possible to return the firing means 7 from the firing completion state to the launchable state, and re-puncture can be performed.

  Also according to the present embodiment, the puncture cartridge 2 having the puncture element 31 that has been formally punctured only when the user intends, but is not yet contaminated by body fluid or the like can be reused.

  FIG. 14 shows a modification of the puncture device A2. In the present modification, the switching member 52 is configured to include a key element 523. The key element 523 has a portion appearing outside the main body case 6 in the switching member 52 as a main component. The key element 523 preferably includes a user identification information display area 521. Similar to the user identification information display area 511, the user identification information display area 521 is an area in which user identification information for identifying a user is displayed. That is, the key component 523 is owned by each individual user.

  Further, in the present modification, the return projection 522 is always mounted on the main body case 6 by adopting a known structure such as engagement, and relative movement along the slit 61 with respect to the main body case 6. Is possible. Here, the slit 61 has, for example, the shape shown in the above-described second embodiment. However, in a state where the key element 523 is not yet attached, it is practically impossible to operate the return convex portion 522 from the outside of the main body case 6, and the movement of the return convex portion 522 is prevented. For this reason, in FIG. 14, the puncture device A2 in a state where the key element 523 is not attached is set to the repuncture prevention mode.

  On the other hand, when the key element 523 is mounted by being fitted to the return convex portion 522 or the like, the switching member 52 is formed. The switching member 52 in this state is in a state of receiving the operation of the user, and can take the first attitude and the second attitude by the operation of the user. When the key element 523 is attached to the return convex portion 522 and the key element is moved in the circumferential direction of the slit 61, the inclined surface 522a of the return convex portion 522 looks like riding on the inclined surface 824a of the concave portion 824. As a result, the engagement lever 823 is deformed radially inward, and the engagement between the tip of the engagement lever 823 and the engagement portion 62 is released. Therefore, the switching member 52 is allowed to shift from the first posture to the second posture by mounting the key element 523.

  As an example of use of the puncture device A2, when the key element 523 is not attached, the puncture device A2 is used as a repuncture prevention mode, and one puncture cartridge 2 is punctured only once. On the other hand, when the key element 523 is attached, re-puncture according to the user's intention becomes possible. As described above, the key element 523 performs an important function of permitting the intention to the re-puncture possible mode. Therefore, the user specifying information is attached to the user specifying information display area 521, and only the appropriate user is allowed. Is preferably carried.

  In addition, in the puncture device A2 shown in FIGS. 11 to 14, in order to identify the main body (user) that can be re-punctured by shifting the switching member 52 to the second posture, A user identification information display area similar to the user identification information display area 511 described above may be provided. This user-specific information display area includes the same variations as the above-described user-specific information display area 511. For example, the user-specific information display area may be an area to which a seal on which the user's name is written is attached, It may be an area where the user's name is entered by a writing instrument.

  The puncture device A2 shown in FIGS. 11 to 14 may further include a removable stopper component for blocking the switching operation of the switching member 52. In a state where the stopper part is not mounted, the switching member 52 can perform the switching operation described above. On the other hand, when the stopper part is mounted, the switching operation of the switching member 52 is blocked. The configuration of such stopper parts is not particularly limited, and those using a mechanical principle such as engagement, those using an electrical principle, or those using magnetic force are appropriately employed.

  The puncture device according to the present invention is not limited to the embodiment described above. The specific configuration of each part of the puncture device according to the present invention can be varied in design in many ways.

A1, A2 puncture device 1 device body 2 puncture cartridge 3 puncture moving body 31 puncture element 32 holding portion 322 rear end projection 4 cartridge case 42 puncture port 51 return member 511 user identification information display area 512 engagement portion 513 return projection 51A Dummy member 52 Switching member 521 User specific information display area 522 Return convex part 523 Key element 6 Main body case 61 Slit 611 Axial part 612 Circumferential part 62 Engaging part 66 Firing button 7 Firing means 70 Elastic member 71 Connecting part 711 Connection Recess 712 Latch Recess 713 Flange Part 81 Latch Part 82 Return Bracket 821 Tubular Part 822 Through Hole 823 Engagement Lever 824 Concave N Loading Direction

Claims (5)

Body case,
Disposable puncturing elements,
Firing means having a connection portion for fixing the puncture element, and an elastic member exerting an elastic force serving as a driving force for firing the puncture element;
A bracket comprising: a restricting portion that restricts movement of the connecting portion; and a predetermined portion that engages with an engaging portion disposed inside the main body case;
A return member removably attachable to the body case;
With
The firing means takes a launchable state in which the puncture element can be fired, and a firing completion state in which the launch of the puncture element has been completed,
A re-puncture permission mode which allows the firing means to return from the firing completion state to the launchable state, and a re-puncture preventing mode from blocking the firing means from the firing completion state to the launchable state and, the possess,
The repuncture prevention mode and the repuncture permission mode can be switched by attaching and detaching the return member,
The puncture device according to claim 1, wherein the return member mounted on the main body case deforms the bracket and the engagement between the engagement portion and the predetermined portion is disengaged to switch from the re-puncture prevention mode to the re-puncture permission mode . The puncture device according to claim 1 , wherein the return member has a user identification information display area in which user identification information identifying a user is displayed.   A body case,
  Disposable type puncture element,
  Firing means having a connecting portion for fixing the puncture element, and an elastic member that exerts an elastic force serving as a driving force for firing the puncture element;
  A bracket comprising: a restricting portion that restricts movement of the connecting portion; and a predetermined portion that engages with an engaging portion disposed inside the main body case;
  Equipped with
  The firing means is capable of firing the puncturing element, and a launchable state, and firing of the puncturing element
And the completed fire state,
  A re-puncture permission mode that allows the launching means to return from the firing completion state to the launchable state, and a repuncture prevention mode that prevents the launching means from returning from the firing completion state to the launchable state. And having
  The body case has a slit along the circumferential direction,
  The re-puncture permission mode and the re-puncture prevention mode are provided by having a convex portion attached to the main body case and projecting into the main body case through the slit, and moving the convex portion along the slit. A switching member for switching between
  The re-puncture permission mode is changed from the re-puncture prevention mode by the convex portion of the switching member deforming the bracket and disengaging the engagement portion installed inside the main body case and the predetermined portion. A puncture device that switches to The switching member further includes a key element detachably attachable to the convex portion projecting to the inside of the main body case .
The puncture device according to claim 3 , wherein the switching member is movable along the slide by attaching the key element to the convex portion . The puncture device according to claim 3 or 4 , wherein the switching member has a user identification information display area in which user identification information identifying a user is displayed.