JP2005312763A - Cartridge for puncture needle, puncture equipment, tip unit and adaptor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge for a puncture needle and puncture equipment having a sufficient safety with a simple configuration. <P>SOLUTION: The cartridge 10 has a safety lancet 11 and an attachment 14. The safety lancet 11 comprises a tip cover 12 and a lancet 13. A holding section 12d is formed on the inside of the tip cover 12 for holding the lancet 13 in order to prevent the movement of the lancet 13 in the shooting direction. In addition, an expanding section 14b is formed on the inside of the attachment 14 for expanding the holding section 12d outward when the safety lancet 11 is attached to the attachment 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a puncture needle cartridge, a puncture device, a tip unit constituting the puncture device, and an adapter, which are used when a puncture needle is inserted into a fingertip or the like to collect blood or the like used for blood glucose level measurement.

  In recent years, with an increase in the number of diabetic patients, cases of diabetic patients themselves measuring blood glucose levels themselves at home or the like to self-manage fluctuations in blood glucose levels are increasing. In view of such a situation, when collecting blood for measuring blood sugar level, a lancet provided with a puncture needle that can easily damage a fingertip or the like and collect blood necessary for measurement. A device (puncture device) is provided.

  The lancet device has a puncture needle mounted on the tip portion, and the puncture needle is fired using a force of a spring or the like with the tip portion applied to a fingertip or the like. The puncture needle is protruded about several mm to 2.0 mm. Thereby, blood sugar level can be measured by incising a fingertip etc., collecting blood flowing out from the wound, and dropping the collected blood on a sensor portion of the blood glucose meter.

  Since such a lancet device is provided with a puncture needle for creating a wound on the patient's fingertip as described above, the elderly with reduced visual acuity handle the puncture needle after use. There was a risk of injury.

  For this reason, a so-called safety lancet device has been proposed that employs a structure in which the puncture needle is not exposed from the main body part except when necessary (see Patent Document 1).

For example, Patent Document 1 discloses a lancet device in which a distal end portion including a puncture needle is a disposable portion, and the disposable portion is firmly fixed to the main body before use. At the time of use, a predetermined part is broken and the disposable part and the main body are supported in a separable state. After use, the disposable part including the puncture needle is separated from the main body and discarded. Thereby, while preventing the generation | occurrence | production of the injury by the puncture needle before use, the safety | security is maintained by discarding the disposable part containing a puncture needle after use.
Japanese Patent No. 2598229 (registered on January 9, 1997)

  However, the conventional lancet device has the following problems.

  That is, in the lancet device disclosed in Patent Document 1, although safety before use is ensured, means for holding the puncture needle again after the puncture needle is brought into a free state inside the main body of the lancet device during use. Does not have. For this reason, the puncture needle cannot be held after use, and the puncture needle to which blood has adhered may protrude.

  Further, when the disposable part including the puncture needle is discarded after use, the configuration of the disposable part such as the puncture needle is separated and discarded. For this reason, at the time of disposal, the holding of the puncture needle is released, and the puncture needle to which blood has adhered is exposed.

  As described above, in the lancet device disclosed in Patent Document 1, it is difficult to say that safety after use is sufficiently ensured.

  An object of the present invention is to provide a puncture needle cartridge, a puncture device, and a tip unit and an adapter that constitute the puncture device with a simple configuration and sufficient safety.

  The puncture needle cartridge according to claim 1 is a puncture needle cartridge that is attached to a main body portion provided with an urging portion for firing a puncture needle and constitutes a puncture device together with the main body portion, and a tip unit; With an adapter. The tip unit has a puncture needle and a casing. The casing is formed with an opening through which the tip of the puncture needle protrudes and a puncture needle holding portion that holds the puncture needle in a puncture direction so as to be immovable. The adapter has a holding release part, and a tip unit is attached to one end and a main body part is attached to the other end. The holding release unit releases the holding of the puncture needle by the puncture needle holding unit only when the tip unit is attached.

  Here, the adapter includes a holding release unit that releases the holding of the puncture needle only when the tip unit is attached to the adapter.

  Conventional puncture devices are provided with various mechanisms for suppressing exposure of the puncture needle before and after use in consideration of user safety. However, this mechanism has a problem that the portion of the puncture needle cannot be held again after use, and the disposable portion is separated into pieces after disposal and the puncture needle is exposed.

  Therefore, the puncture needle cartridge of the present invention includes a puncture needle holding portion and a holding release portion as a mechanism for preventing exposure of the puncture needle from the casing before and after use.

  Thereby, since the puncture needle is held in the casing of the tip unit unless the tip unit is attached to the adapter, safety before use can be ensured. On the other hand, since the puncture needle is again held in the casing by removing the tip unit from the adapter after use, safety after use can be ensured. Therefore, after use, if only this tip unit portion is removed and discarded, the puncture needle will not be exposed from the casing because it is removed from the adapter. As a result, a puncture cartridge with high safety before and after use can be provided with a simple configuration without adding new parts such as a coil spring.

  Moreover, a conventional thing can be used for a puncture device main body by forming an adapter so that it may adapt to the conventional puncture device main body. Therefore, it is possible to provide a puncture device with higher safety without placing an economical burden on the user.

  The puncture needle cartridge according to claim 2 is the puncture needle cartridge according to claim 1, wherein the held portion to be held by the puncture needle holding portion is formed on the puncture needle, and the puncture needle holding portion Holds the held portion from the outside in the radial direction of a circle centered on the axial direction of the puncture needle.

  Here, by holding the held portion formed on the puncture needle from the outside in the radial direction of the circle centering on the axial direction of the puncture needle, the movement of the puncture needle in the puncture direction inside the tip unit is prohibited. Can do.

  The puncture needle cartridge according to claim 3 is the puncture needle cartridge according to claim 2, wherein the holding release portion moves the puncture needle holding portion radially outward when the tip unit is attached to the adapter. The holding of the held part by the puncture needle holding part is released.

  Here, when the tip unit is attached to the adapter, the holding release unit pushes and moves the puncture needle holding unit outward in the radial direction of a circle centering on the axial direction of the puncture needle.

  Thereby, only by attaching the tip unit to the adapter, the holding of the puncture needle in the tip unit can be released and the puncture needle can be moved to a state that can be fired. On the other hand, by removing the tip unit from the adapter, the puncture needle holding part can be returned to the position before attachment, and the puncture needle can be shifted to a state held inside the tip unit. Therefore, since the puncture needle is held in the casing of the tip unit before and after use, injury due to the puncture needle before and after use can be prevented, and a highly safe puncture needle cartridge can be provided.

  The puncture needle cartridge according to claim 4 is the puncture needle cartridge according to claim 2, wherein the holding release unit is configured to place the puncture needle around the axial direction after the tip unit is attached to the adapter. When rotated in the direction, the needle rotates together with the puncture needle with respect to the puncture needle holding portion, and the puncture needle holding portion is moved radially outward to release the holding of the held portion by the puncture needle holding portion.

  Here, when releasing the holding of the puncture needle in the puncture needle holding unit, it is necessary not only to attach the tip unit to the adapter but also to rotate the puncture needle in a predetermined direction after the attachment. For this reason, since the puncture needle cannot be fired only by attaching the tip unit to the adapter, safety can be ensured until just before use. In addition, after use, the puncture needle is rotated in the direction opposite to the predetermined direction to move the puncture needle holding portion to the inside in the radial direction of the circle centering on the axial direction of the puncture needle, and the puncture needle is again It is possible to shift to a state held in the tip unit. Therefore, it is possible to provide a highly safe puncture needle cartridge by preventing injury due to the puncture needle before and after use.

  A puncture needle cartridge according to a fifth aspect is the puncture needle cartridge according to any one of the first to fourth aspects, wherein the casing is integrally formed.

  Here, the puncture needle holding part for holding the puncture needle and the casing in which the opening is formed are integrally formed by, for example, injection molding or the like. For this reason, it is possible to form a mechanism capable of holding and releasing the puncture needle as needed without adding new parts. Therefore, a puncture needle cartridge with higher safety can be provided with a simple configuration.

  A puncture needle cartridge according to a sixth aspect is the puncture needle cartridge according to any one of the first to fifth aspects, wherein the adapter is integrally formed.

  Here, the adapter including the holding release portion that releases the holding of the puncture needle is integrally formed by, for example, injection molding. For this reason, it is possible to form a mechanism capable of holding and releasing the puncture needle as needed without adding new parts. Therefore, a puncture needle cartridge with higher safety can be provided with a simple configuration.

  The puncture needle cartridge according to claim 7 is the puncture needle cartridge according to any one of claims 1 to 6, wherein the adapter includes a protrusion amount adjusting mechanism for adjusting an amount of the puncture needle protruding from the opening. I have.

  Here, a protrusion amount adjusting unit is provided that adjusts the protrusion amount of the puncture needle from the opening formed at the tip portion of the tip unit when the puncture needle is fired. Here, the appropriate puncture depth for collecting blood is often different for each user. Therefore, since the puncture needle cartridge of the present invention is provided with an adjustment mechanism that adjusts the protrusion amount of the puncture needle, the puncture needle cartridge can be adjusted to the optimum puncture depth for each user, and a highly safe puncture needle cartridge is provided. Can be provided.

  The puncture needle cartridge according to claim 8 is the puncture needle cartridge according to claim 7, wherein the protrusion amount adjusting mechanism maintains the position of the puncture needle with respect to the urging portion of the main body while the adapter is attached to the main body. Move in the puncture direction relative to the part.

  Here, the distal end portion of the adapter is moved back and forth in the puncture direction in a state where the position of the puncture needle with respect to the urging portion provided in the main body portion is maintained. Thereby, the position of the opening of the tip unit connected to the adapter can be moved in the puncture direction. As a result, the amount of protrusion from the opening in the tip unit of the puncture needle can be easily adjusted.

  The puncture needle cartridge according to claim 9 is the puncture needle cartridge according to claim 8, wherein the adapter is screwed in a circumferential direction around the axial direction of the puncture needle and is rotatable with respect to the main body. Is attached.

  Here, the amount of protrusion of the puncture needle can be easily adjusted simply by rotating the adapter screwed to the main body portion in the circumferential direction around the axial direction of the puncture needle.

  The puncture device according to claim 10 includes a tip unit and a main body. The tip unit has a puncture needle and a casing. An opening and a puncture needle holding part are formed in the casing. The opening projects the tip of the puncture needle. The puncture needle holding unit holds the puncture needle so as not to move in the puncture direction in a state where the puncture needle is housed inside. The main body has a holding release part and an urging part. The holding release unit releases the holding of the puncture needle by the puncture needle holding unit only when the tip unit is attached. The urging unit fires the puncture needle whose holding in the tip unit is released by the holding releasing unit.

  Here, a holding release unit that releases the holding of the puncture needle only when the tip unit having the puncture needle holding unit that holds the puncture needle is attached is provided.

  Thereby, since the puncture needle is held in the tip unit unless the tip unit is attached to the main body, safety before use can be ensured. On the other hand, since the puncture needle is again held in the tip unit by removing the tip unit from the main body after use, safety after use can be ensured. Therefore, a highly safe puncture device can be provided with a simple configuration without adding new parts.

  A puncture device according to an eleventh aspect is the puncture device according to the tenth aspect, wherein the held portion to be held by the puncture needle holding portion is formed on the puncture needle. The puncture needle holding part holds the held part from the outside in the radial direction of a circle centering on the axial direction of the puncture needle.

  Here, by holding the held portion formed on the puncture needle from the outside in the radial direction of the circle centering on the axial direction of the puncture needle, movement of the puncture needle in the puncture direction inside the tip unit is easily prohibited can do.

  The puncture device according to claim 12 is the puncture device according to claim 11, wherein the holding release portion moves the puncture needle holding portion radially outward when the tip unit is attached to the main body portion. The holding of the held part by the puncture needle holding part is released.

  Here, when the tip unit is attached to the main body part, the holding release part pushes the engaging part of the puncture needle holding part in the circumferential direction of the puncture needle. Thereby, only by attaching the tip unit to the main body, it is possible to release the engagement of the puncture needle by the engaging portion in the tip unit and shift the state to the state where the puncture needle can be fired. On the other hand, by removing the tip unit from the main body, the puncture needle can be easily shifted to the state held inside the tip unit. Therefore, it is possible to prevent injuries caused by the puncture needle before and after use, and to provide a highly safe puncture device.

  The puncture device according to claim 13 is the puncture device according to claim 11, wherein the holding release unit is configured to place the puncture needle around the axial direction after the tip unit is attached to the main body. When rotated in the direction, the needle rotates together with the puncture needle with respect to the puncture needle holding portion, and the puncture needle holding portion is moved radially outward to release the holding of the held portion by the puncture needle holding portion.

  Here, when releasing the holding of the puncture needle in the puncture needle holding part, it is necessary not only to attach the tip unit to the main body part but also to rotate the puncture needle in a predetermined direction after the attachment. For this reason, since the puncture needle cannot be fired only by attaching the tip unit to the main body, safety can be ensured until just before use. In addition, after use, the puncture needle is rotated in the direction opposite to the predetermined direction to move the puncture needle holding portion to the inside in the radial direction of the circle centering on the axial direction of the puncture needle, and the puncture needle is again It is possible to shift to a state held in the tip unit. Therefore, it is possible to prevent injuries caused by the puncture needle before and after use, and to provide a highly safe puncture device.

  The puncture device according to claim 14 is the puncture device according to any one of claims 10 to 13, wherein the casing is integrally formed.

  Here, the puncture needle holding part for holding the puncture needle and the casing in which the opening is formed are integrally formed by, for example, injection molding or the like. For this reason, it is possible to form a mechanism capable of holding and releasing the puncture needle as needed without adding new parts. Therefore, a puncture device with higher safety can be provided with a simple configuration.

  The puncture device according to claim 15 is the puncture device according to any one of claims 10 to 14, wherein the main body portion further includes a protrusion amount adjusting mechanism for adjusting a protrusion amount of the puncture needle from the opening. I have.

  Here, a protrusion amount adjusting unit is provided that adjusts the protrusion amount of the puncture needle from the opening formed at the distal end portion of the distal end unit when the puncture needle is fired. Here, the appropriate puncture depth for collecting blood is often different for each user. Therefore, the puncture device according to the present invention includes an adjustment mechanism that adjusts the protruding amount of the puncture needle. Therefore, the puncture device can be adjusted to an optimum puncture depth for each user, and a highly safe puncture device can be provided. .

  The puncture device according to claim 16 is the puncture device according to claim 15, wherein the main body portion is attached to a main body casing in which an urging portion for firing the puncture needle is housed, and a front end of the main body casing. And an adjustment unit. The protrusion amount adjusting mechanism moves only the adjusting portion in the puncturing direction while maintaining the position of the puncture needle with respect to the main body casing.

  Here, in a state where the position of the puncture needle with respect to the main body casing is maintained, only the adjustment portion of the main body is moved back and forth in the puncture direction. Thereby, the position of the opening of the tip unit can be moved back and forth in the puncture direction along with the movement of the adjustment unit. As a result, the amount of protrusion from the opening in the tip unit of the puncture needle can be easily adjusted.

  The puncture device according to claim 17 is the puncture device according to claim 16, wherein the adjustment portion is screwed in a circumferential direction centering on an axial direction of the puncture needle and is rotatable with respect to the main body casing. It is attached.

  Here, the protrusion amount of the puncture needle can be easily adjusted simply by rotating the adjustment portion in the circumferential direction centering on the axial direction of the puncture needle.

  The tip unit according to claim 18 is attached to a main body portion including an urging portion for firing the puncture needle and a holding release portion for releasing the holding of the puncture needle in the puncturing direction. It is the front-end | tip unit which comprises an instrument. The tip unit includes a puncture needle and a casing in which an opening and a puncture needle holding portion are formed. The opening projects the tip of the puncture needle. The puncture needle holding unit holds the puncture needle in an unmovable state in the puncture direction with the puncture needle housed therein, and the holding release unit releases the puncture needle only when attached to the main body.

  Here, only when the tip unit containing the puncture needle is attached to the main body, the holding of the puncture needle by the puncture needle holding portion in the tip unit is released and the puncture needle can be fired. .

  Thereby, unless the tip unit is attached to the main body, the puncture needle is held in the puncture needle holding portion in the tip unit, so that safety before use can be ensured. On the other hand, since the puncture needle is again held in the puncture needle holding part in the tip unit by removing the tip unit from the main body after use, safety after use can be ensured. Therefore, a highly safe puncture device can be provided with a simple configuration.

  The adapter according to claim 19 is an adapter that is attached between the main body portion and the tip unit to constitute a puncture device. The main body has an urging portion for firing the puncture needle. The tip unit includes a puncture needle, an opening through which the tip of the puncture needle protrudes, and a puncture needle holder that holds the puncture needle accommodated in the puncture direction so as not to move. The adapter includes a holding release unit that releases the holding of the puncture needle in the puncture needle holding unit only when the tip unit is attached.

  Here, for releasing the holding of the puncture needle by the puncture needle holding part of the tip unit between the tip unit containing the puncture needle and the main body part having the biasing part for firing the puncture needle An adapter having a holding release unit is provided. The state where the puncture needle is held by the puncture needle holding portion in the tip unit and the puncture needle can be launched only when the tip unit containing the puncture needle is attached to the adapter of the present invention. Can be.

  Thereby, unless the tip unit is attached to the adapter, the puncture needle is held in the puncture needle holding part in the tip unit, so that safety before use can be ensured. On the other hand, after use, the tip unit is removed from the adapter so that the puncture needle is held again at the puncture needle holder in the tip unit, so that safety after use can be ensured. Therefore, a puncture device with high safety can be provided with a simple configuration simply by adding an adapter while using a conventional main body.

  According to the puncture needle cartridge of the first aspect, it is possible to provide a puncture cartridge with high safety before and after use with a simple configuration.

  According to the puncture needle cartridge of the second aspect, movement of the puncture needle in the puncture direction inside the tip unit can be prohibited.

  According to the puncture needle cartridge of the third aspect, it is possible to prevent injuries caused by the puncture needle before and after use and to provide a highly safe puncture needle cartridge.

  According to the puncture needle cartridge of the fourth aspect, it is possible to prevent injury caused by the puncture needle before and after use and to provide a highly safe puncture needle cartridge.

  According to the puncture needle cartridge of claim 5, a puncture needle cartridge with higher safety can be provided with a simple configuration.

  According to the puncture needle cartridge of the sixth aspect, it is possible to form a mechanism capable of holding and releasing the puncture needle as needed without adding new parts.

  According to the puncture needle cartridge of the seventh aspect, it is possible to provide a puncture needle cartridge that can be adjusted to an optimum puncture depth for each user and has high safety.

  According to the puncture needle cartridge of the eighth aspect, it is possible to easily adjust the protruding amount from the opening of the tip unit of the puncture needle.

  According to the puncture needle cartridge of the ninth aspect, the protruding amount of the puncture needle can be easily adjusted.

  According to the puncture device of the tenth aspect, a highly safe puncture device can be provided with a simple configuration without adding new parts.

  According to the puncture device of the eleventh aspect, the movement of the puncture needle in the puncture direction inside the tip unit can be easily prohibited.

  According to the puncture device of the twelfth aspect, it is possible to provide a highly safe puncture device by preventing injury due to the puncture needle before and after use.

  According to the puncture device of the thirteenth aspect, injury due to the puncture needle before and after use can be prevented, and a highly safe puncture device can be provided.

  According to the puncture device of claim 14, a puncture device with higher safety can be provided with a simple configuration.

  According to the puncture device of the fifteenth aspect, it is possible to provide a puncture device that can be adjusted to an optimum puncture depth for each user and has high safety.

  According to the puncture device of the sixteenth aspect, it is possible to easily adjust the amount of protrusion from the opening in the tip unit of the puncture needle.

  According to the puncture device of the seventeenth aspect, the protruding amount of the puncture needle can be easily adjusted.

  According to the tip unit according to claim 18, a puncture device having high safety before and after use can be provided with a simple configuration.

  According to the adapter of the nineteenth aspect, a puncture device having high safety before and after use can be provided with a simple configuration.

  An embodiment of the puncture needle cartridge and the puncture device of the present invention will be described below with reference to FIGS.

[Configuration of the entire lancing device]
The lancet device (puncture device) 1 of the present embodiment houses a lancet 13 inside (see FIG. 9 and the like), and protrudes a needle from the distal end portion when blood or the like is collected for blood glucose measurement. Thus, the instrument is used to form a puncture wound at a blood collection site. In addition, the lancet device 1 includes a cartridge (puncture needle cartridge) 10 and a main body 20 as shown in FIGS. 1 and 2. The “front end” used in the following description refers to the side from which the front end of a needle 13a of the lancet 13 to be described later projects, and the “rear end” refers to the opposite main body 20 side. .

[Cartridge configuration]
As shown in FIG. 2, the cartridge 10 is a member attached to the distal end portion of the main body 20, and includes a safety lancet (tip unit) 11 and an attachment (adapter) 14. Further, the cartridge 10 is designed according to the shape of the conventional main body 20, and the lancet device of the present invention with high safety can be used by replacing only the cartridge 10.

  As shown in FIG. 2, the safety lancet 11 is connected to the main body 20 via an attachment 14. And the safety lancet 11 is provided with the front-end | tip cover 12 and the lancet 13 as shown in FIG.

[End cover]
The tip cover 12 is attached to the most distal side of the lancet device 1 and is brought into contact with the skin when performing puncturing. As shown in FIG. 3, the tip cover 12 has a flange portion 12a, a trunk portion 12b, an opening 12c, and a holding portion (puncture needle holding portion) 12d.

  The flange portion 12a has a disk shape protruding outward in the radial direction of a circle centering on the axial direction of a needle 13a of the lancet 13 described later (hereinafter simply referred to as “radially outward”). And in the state where the front-end | tip cover 12 was attached to the attachment 14 with the lancet 13, it plays the role as a cap which covers a front-end | tip, and the role as a stopper of the lancet 13 fired by coil spring S1 mentioned later. The flange portion 12a is brought into contact with the skin when puncturing is performed.

  The trunk portion 12b has a cylindrical shape with an open rear end side and is hollow inside, and houses a lancet 13 to be described later. And the trunk | drum 12b guides the flange part 13b formed in the lancet 13 along the discharge direction of the lancet 13. As shown in FIG. Further, when the safety lancet 11 is attached to an attachment 14 to be described later, the trunk portion 12b is radially outward (in a direction in which the slit formed in the trunk portion 12b is widened) by an extension portion 14b formed inside the attachment 14. It is elastically deformed.

  The opening 12c is a circular opening portion centering on the axial direction of the needle 13a of the lancet 13, and projects only the tip of the needle 13a of the fired lancet 13.

  The holding part 12d is two rail-like parts formed in the circumferential direction along the inner wall surface of the body part 12b. The holding portion 12d holds the flange portion 13b of the lancet 13 from the outside in the radial direction so as to be sandwiched between the two rail-like portions when the safety lancet 11 is not attached to the attachment 14.

  In addition, each part 12a-12d which comprises the front-end | tip cover 12 is integrally molded with resin, and especially the part of the trunk | drum 12b has the property to elastically deform.

  The lancet 13 is a member for forming a puncture wound with respect to the skin of the part to be a blood collection site. And the lancet 13 has the needle | hook 13a, the flange part (held part) 13b, and the trunk | drum 13c, as shown in FIG.

  The needle 13a is integrated with these members 13b and 13c by insert molding when the flange portion 13b and the body portion 13c are formed of synthetic resin. The flange portion 13b is a portion protruding outward in the radial direction, and is held from the radially outer side in the holding portion 12d of the tip cover 12 described above. The trunk | drum 13c is a cylindrical member, Comprising: It shape | molds so that the rear end side of the needle | hook 13a except the part exposed outside may be covered.

〔attachment〕
The attachment 14 is a member that mediates the attachment of the safety lancet 11 to the main body 20 between the safety lancet 11 and the main body 20 as shown in FIG. As shown in FIG. 4, the attachment 14 is a cylindrical member as a whole, and has a distal end portion 14 a, an extended portion (holding release portion) 14 b, and a trunk portion 14 c.

  The distal end portion 14 a is opened to the distal end portion side, and is inserted with the body portion 12 b of the distal end cover 12 holding the lancet 13.

  The extended portion 14b is formed integrally with the inside of the attachment 14, and is a cylindrical member that is smaller than the distal end portion 14a. And the expansion part 14b inserts the trunk | drum 13c of the lancet 13 in the cylindrical opening part in the state in which the safety lancet 11 was attached to the attachment 14. FIG. Furthermore, the extended portion 14b is formed so that the radius of the circle of the cylindrical tube portion increases as it advances toward the main body portion 20 side. Thereby, when the safety lancet 11 is attached to the attachment 14, the body 12b of the tip cover 12 can be elastically deformed outward in the radial direction, and the holding portion 12d can be moved outward in the radial direction.

  The trunk portion 14c is a cylindrical portion having a larger radius than the distal end portion 14a, and is attached to the rotating body 6 and the guide member 31 that are attached to the distal end side of the main body portion 20 described later.

  In addition, each part 14a-14c which comprises the attachment 14 is also integrally molded with resin similarly to the front-end | tip cover 12. FIG.

[Configuration of main unit]
The main body 20 is a member on the main body side of the lancet device 1 to which the cartridge 10 described above is attached. As shown in FIGS. 5 and 6, the rotating body (projection amount adjusting mechanism) 6, the main body casing 21, the operation A cap 22 and a guide member 31 are provided. The main body 20 houses the lancet holder 4, coil springs (biasing portions) S1, S2, and the like (see FIG. 9).

〔Rotating body〕
The rotating body 6 is a cylindrical member that is attached to the distal end side of the main casing 21 and is operated when adjusting the puncture depth. Moreover, the rotary body 6 has the movable part 60, a pair of protrusion piece 61a, 61b, and the flange part 62, as shown to Fig.7 (a) and FIG.7 (b).

  The movable portion 60 is provided with elasticity in the puncture direction N1 by providing an L-shaped notch 63, and has a protrusion 64 extending in the puncture direction N1.

  The protrusion 64 is a portion protruding outward in the radial direction on the cylindrical outer wall surface constituting the rotating body 6 and engages with the linear recess 38 (see FIG. 8) in the guide member 31.

  The pair of projecting pieces 61 a and 61 b project in the retreat direction N <b> 2 while facing each other with the center of the rotating body 6 on the rear end side of the cylindrical shape constituting the rotating body 6. The protruding pieces 61a and 61b are formed to have different heights. In addition, inclined protrusions 65a and 65b are formed on the protruding pieces 61a and 61b, respectively. The number of protruding pieces 61a and 61b is not limited to two shown in FIG. 7A, and may be one or three or more.

  The inclined protrusions 65a and 65b are portions that protrude outward in the radial direction from the cylindrical outer wall surface side that constitutes the rotating body 6 at the tips of the protruding pieces 61a and 61b described above. Further, the inclined protrusions 65a and 65b are engaged with a spiral recess 39 formed on the inner wall surface of the guide member 31 to be described later and rotate (see FIG. 8).

  The flange portion 62 is a flange-shaped portion protruding outward in the radial direction of the cylinder at a substantially central position in the puncture direction N1 of the cylindrical portion constituting the rotating body 6, and engages the attachment 14 described above on the outer wall surface. An annular recess 66 is provided.

  A scale 68 is attached to the end 67 of the rotating body 6. The scale 68 serves as a guideline for adjusting the puncture depth. Specifically, the rotary body 6 is rotated around the axial direction of the needle 13a of the lancet 13 so that the number on the scale 68 is changed. The position is aligned with the mark M provided on the outer surface of the guide member 31. Thereby, each member on the tip side from the attachment 14 can be moved in the puncturing direction N1 or the retracting direction N2, and the puncture depth can be easily adjusted. More specifically, the rotating body 6 is rotated in a state where the protrusion 64 and the inclined protrusions 65a and 65b are engaged with the linear recess 38 and the spiral recess 39 of the guide member 31, respectively. As a result, the inclined protrusions 65 a and 65 b move spirally along the spiral recess 39. As a result, the rotator 6 can be moved relative to the guide member 31 in the puncturing direction N1 or the retracting direction N2. On the other hand, the protrusion 64 spirally moves in the same manner as the inclined protrusions 65a and 65b as the rotating body 6 rotates, but engages with the linear recess 38 formed at a position corresponding to the inclined protrusions 65a and 65b. Therefore, when the rotating body 6 is rotated, a click feeling is obtained by the engagement between the protrusion 64 and the linear recess 38. Further, by stopping the rotation of the rotating body 6 in a state where the protrusion 64 and the linear recess 38 are engaged, the rotating body 6 can be maintained in a fixed state with respect to the guide member 31.

[Lancet holder]
As shown in FIG. 9, the lancet holder 4 is accommodated in the main body casing 21, and holds the lancet 13 from the rear end side. In addition, the lancet holder 4 moves the lancet 13 in the puncture direction N <b> 1 by pressing the operation cap 22. Further, the lancet holder 4 is provided with a pair of engaging claws 40, a concave portion 41 and a flange portion 42. In addition, the structure which connects the lancet holder 4 and the lancet 13 via the holder adapter 5 (refer FIG. 11) may be sufficient.

  The pair of engaging claws 40 are portions that protrude outward in the radial direction at the rear end portion of the cylindrical lancet holder 4, and are centered on the axial direction of the needle 13 a of the lancet 13 from the inner wall surface of the main body casing 21. Engages with a protrusion 33 formed so as to protrude radially inward (hereinafter simply referred to as “radially inward”). The engaging claw 40 has elasticity and can be moved close to and away from the convex portion 33 formed on the inner wall surface of the lancet holder 4.

  The recessed portion 41 is a portion that is recessed toward the retracting direction N2 in the front end portion of the cylindrical lancet holder 4, and holds the body portion 13c of the lancet 13 from the rear end side.

  The flange portion 42 is a flange-shaped portion that protrudes radially outward from the outer wall surface in the vicinity of the substantially central portion of the cylindrical lancet holder 4, and puncture direction N <b> 1 while abutting against the inner wall surface of the main body casing 21. Alternatively, it moves in the retracting direction N2 and interferes with an inner flange portion 37 formed on a guide member 31 described later. The flange portion 42 holds a coil spring (biasing portion) S <b> 1 between the flange portion 42 and the convex portion 33 formed on the inner wall surface of the main body casing 21.

  The main casing 21 is a cylindrical member that houses the lancet holder 4 and the like described above, and has a through hole 32, a convex portion 33, an annular concave portion 34, and the like, as shown in FIG.

  The through hole 32 is an opening that is formed in the rear end portion 35 of the main body 20 and holds the operation cap 22 in a freely movable state in the puncture direction N1.

  The convex portion 33 is a portion protruding radially inward from the inner wall surface of the main casing 21 and holds the coil spring S1 on the surface on the puncture direction N1 side and the coil spring S2 on the surface on the retraction direction N2 side. And the convex part 33 engages the engaging nail | claw 40 formed in the rear end of the lancet holder 4 in the surface at the side of retraction | saving direction N2.

  The annular recess 34 is a groove formed at the front end portion of the main body casing 21, and engages with an outer flange portion 36 of the guide member 31 described later, and fixes the guide member 31 on the front end side of the main body casing 21.

[Operation cap]
The operation cap 22 is exposed from a through hole 32 formed in the rear end portion of the main body casing 21 and is operated when the lancet holder 4 is fired in the puncture direction N1. Further, the operation cap 22 is held in a slidable state in the puncture direction N1 with respect to the main body casing 21. Further, the operation cap 22 has a flange portion 50 and a pair of pressing portions 51.

  The flange portion 50 is a flange-shaped portion that protrudes outward in the radial direction, and a coil spring S <b> 2 is disposed between the flange portion 50 and the convex portion 33 formed on the inner wall surface of the main body casing 21. And the flange part 50 is hold | maintained in the state contact | abutted with respect to the rear-end part 35 of the main body casing 21 by the coil spring S2 in a normal state. When the operation cap 22 is pressed in the puncture direction N1, the operation cap 22 moves in the puncture direction N1 while compressing the coil spring S2. On the other hand, when the pressing force on the operation cap 22 is removed, the operation cap 22 is returned to the original position by the biasing force of the coil spring S2.

  Each pressing portion 51 presses the pair of engaging claws 40 when the operation cap 22 is moved a predetermined distance or more in the puncturing direction N1, and changes the engaging claws 40 so that the end portions thereof are close to each other. Let The pair of engagement claws 40 are released from the engagement state (latched state) with the convex portion 33 formed inside the main body casing 21 by pressing from the pressing portion 51, and the lancet holder 4 is pressed by the biasing force of the coil spring S <b> 1. Can be fired in the puncture direction N1.

(Guide member)
As shown in FIG. 6, the guide member 31 is a cylindrical member disposed between the rotating body 6 and the main body casing 21, and as shown in FIG. 9, the lancet holder 4 extends in the puncture direction N <b> 1. Restrict movement. Further, as shown in FIG. 8, the guide member 31 includes an outer flange portion 36, an inner flange portion 37, a plurality of linear recess portions 38 and a spiral recess portion 39.

  The outer flange portion 36 is a flange-shaped member that protrudes outward in the radial direction from the outer wall surface of the cylindrical guide member 31, and is formed to fix the guide member 31 to the main body casing 21. As shown in FIG. 9, the outer flange portion 36 is screwed into an annular recess 34 formed at the tip of the main body casing 21, and the guide member 31 is fixed to the main body casing 21.

  The inner flange portion 37 is a flange-shaped member protruding inward in the radial direction from the inner wall surface of the cylindrical guide member 31 and interferes with the flange portion 42 formed on the outer wall surface of the lancet holder 4 described above. Thus, the movement of the lancet holder 4 in the puncture direction N1 is restricted.

  The linear recesses 38 are a plurality of linear recesses formed at regular intervals in the circumferential direction on the inner wall surface of the guide member 31, and are arranged in a direction parallel to the axial direction of the lancet 13. The linear recess 38 engages with a protrusion 64 (see FIG. 7A) of the movable part 60 formed on the rotating body 6.

  The spiral recess 39 is a recess spirally formed in the circumferential direction on the inner wall surface of the guide member 31. The spiral recess 39 engages with the inclined protrusions 65a and 65b of the protruding pieces 61a and 61b in the rotating body 6 (see FIGS. 7A and 7B).

[Coil spring]
As described above, the coil spring S <b> 1 is held between the flange portion 42 and the convex portion 33 inside the main body casing 21. The coil spring S1 is in a compressed state when the pair of engaging claws 40 are engaged with the convex portion 33. For this reason, after engaging the engaging claw 40 with the convex portion 33, the engagement between the convex portion 33 and the pair of engaging claws 40 is released at any timing of the user, whereby the spring of the coil spring S1 is released. The lancet 13 can be fired in the puncture direction N1 together with the lancet holder 4 by force.

  Similarly to the coil spring S <b> 1, the coil spring S <b> 2 is held inside the main body casing 21 between the convex portion 33 formed inside the main body casing 21 and the flange portion 50 of the operation cap 22. Then, as described above, the coil spring S2 applies an urging force for returning the lancet 13 to the original position after operating the operation cap 22 in the puncturing direction.

[How to use this puncture device]
Next, the usage method of the lancet device 1 of this embodiment provided with the above structure is demonstrated.

  Here, first, as shown in FIG. 10, a safety lancet 11 including a lancet 13 and a tip cover 12 is prepared. Note that a safety cap 13 d is attached to the needle 13 a portion of the lancet 13 in the safety lancet 11 before use.

  At the same time as preparing the safety lancet 11, the attachment 14 is attached to the tip of the main body 20 as shown in FIG. 11. And the safety lancet 11 is attached with respect to the main-body part 20 to which the attachment 14 was attached.

  At this time, as shown in FIG. 12, the body portion 13 c of the lancet 13 is inserted into an opening portion of a cylindrical extension portion 14 b formed inside the attachment 14. And the holding | maintenance part 12d moves toward the said radial direction outer side because the trunk | drum 12b of the front-end | tip cover 12 is elastically deformed to the said radial direction outer side so that it may go up to the expansion part 14b. As a result, the holding by the holding portion 12d holding the flange portion 13b of the lancet 13 is released, and the lancet 13 becomes movable in the puncturing direction N1 or the retracting direction N2. At this time, in the tip cover 12, the holding portion 12d moves outward in the radial direction so as to widen a plurality of fine slits 12e (see FIG. 12) formed in the body portion 12b. Thus, by forming the fine slit 12e in the body 12b of the tip cover 12, the holding part 12d can be easily moved outward in the radial direction. Also, from the viewpoint of preventing infection via blood, it is desirable that a plurality of slits 12e be formed finely so that the tip of the needle 12a in the tip cover 12 cannot be touched.

  After the safety lancet 11 is attached to the attachment 14 and the lancet 13 becomes movable in the puncture direction N1 as shown in FIG. 12, the safety cap 13d is removed as shown in FIG. The removal of the safety cap 13d is performed, for example, by pinching the safety cap 13d with a fingertip and twisting off the connecting portion between the flange portion 13b and the safety cap 13d. As shown in FIG. 18, the safety cap 13d is inserted into the opening 12c of the tip cover 12 in the opposite direction after use. The tip of the safety cap 13d to be inserted into the opening 12c has a notch as shown in FIG. 12, and the notch and the opening 12c are designed to fit with each other. Thereby, it is possible to more effectively prevent the puncture needle 13 to which blood has adhered from protruding from the opening 12c of the tip cover 12, and to avoid danger such as infection via blood.

  Before and after the lancet 13 is mounted, the puncture depth is adjusted as necessary. As described above, the puncture depth is adjusted by rotating the rotating body 6 and engaging the inclined protrusions 65a and 65b (FIG. 7 (a), FIG. 7) engaged with the spiral recess 39 (see FIG. 8) of the guide member 31. 7 (b)) is moved along the spiral recess 39 to move the rotating body 6 together with the safety lancet 11 and the attachment 14 in the puncture direction N1 or the retracting direction N2 with respect to the main body 20 (see FIG. (See FIGS. 9 and 12). The puncture depth is selected by aligning the number on the scale 68 on the rotating body 6 with the mark M on the guide member 31. Here, the movement of the lancet holder 4 in the puncture direction N1 is restricted by the flange portion 42 interfering with the inner flange portion 37 of the guide member 31, but the position of the inner flange portion 37 is the rotation of the rotating body 6. Regardless of whether it is fixed. For this reason, the position where the lancet holder 4 is stopped is constant regardless of the position of the rotating body 6. Therefore, the amount by which the needle 13a of the lancet 13 protrudes from the opening 12c can be adjusted by rotating the rotating body 6 to move the position of the opening 12c of the tip cover 12 back and forth.

  Subsequently, the distal end surface of the flange portion 12a of the distal end cover 12 included in the lancet device 1 in the state shown in FIG. 13 is brought into contact with the skin Sk forming the puncture wound. Thereafter, as described above, the lancet 13 is fired in the puncture direction N1 by the biasing force of the coil spring S1, and the needle 13a of the lancet 13 is pierced into the skin Sk. The launch of the lancet 13 with respect to the skin Sk is performed by depressing the operation cap 22 in the puncture direction N1 and releasing the latched state of the lancet holder 4 as described above. Thereby, as shown in FIG. 14, the lancet holder 4 is moved in the puncturing direction N1 until the flange portion 42 and the inner flange portion 37 interfere with each other by the elastic force of the coil spring S1, and the needle 13a of the lancet 13 is opened to the opening 12c. It can be made to protrude from the skin Sk. As a result, the skin Sk is incised by the needle 13a, and blood can flow out from the skin Sk.

  In the state where the lancet 13 is pierced into the skin Sk, the coil panel S1 extends because both ends thereof are fixed to the convex portion 33 formed inside the main body portion 20 and the flange portion 42 of the lancet holder 4, respectively. To do. For this reason, the lancet 13 is immediately extracted from the skin Sk by the elastic force of the coil spring S1, and returns to the normal position together with the lancet 13. Thereby, the time when the lancet 13 is pierced into the skin Sk can be shortened, and puncture pain can be reduced.

  Further, since the lancet 13 that has been used once is usually discarded, after the puncture wound is formed on the skin Sk, the safety lancet 11 is removed from the attachment 14 as shown in FIG. At this time, the safety lancet 11 is pulled out of the attachment 14 by pinching the flange portion 12a, which is the tip portion of the tip cover 12, with the finger. The body 12b of the tip cover 12 that has been elastically deformed outward returns to the inside in the radial direction. As a result, the holding portion 12d moves again inward in the radial direction, and the flange portion 13b of the lancet 13 can be held by the holding portion 12d. Therefore, even when the safety lancet 11 is discarded, it is possible to prevent the user 13 from being injured by the needle 13a protruding from the opening 12c at the tip of the tip cover 12. Even when the distal end surface of the flange portion 12a of the distal end cover 12 that contacts the skin Sk is contaminated by blood or the like, the entire distal end cover 12 can be discarded.

[Characteristic]
(1)
As shown in FIG. 11, the cartridge 10 of this embodiment includes a safety lancet 11 (tip cover 12 and lancet 13) and an attachment 14. A holding portion 12 d that holds the lancet 13 in a state where movement in the firing direction of the lancet 13 is prohibited is formed inside the tip cover 12. Further, an extension portion 14b is formed inside the attachment 14 to push the holding portion 12d outward.

  Here, when the safety lancet 11 is attached to the attachment 14, as shown in FIG. 12, the extended portion 14b formed inside the attachment 14 moves the holding portion 12d holding the lancet 13 outward in the radial direction. The holding of the lancet 13 is released by elastic deformation. As a result, the lancet 13 is movable in the tip cover 12. Furthermore, as shown in FIG. 14, after the lancet 13 is fired in the puncture direction N1 to form a puncture wound on the skin Sk, the safety lancet 11 is removed from the attachment 14 as shown in FIG. 13 is held by the holding portion 12d of the tip cover 12 in a state in which movement is prohibited in the tip cover 12.

  As a result, in the cartridge 10 of the present embodiment, the lancet 13 is attached to the tip cover until the safety lancet 11 is attached to the attachment 14, that is, immediately before and after being used for actually measuring blood glucose level. 12 can be reliably held in a state where it cannot move.

  As a result, the safety of the user before and after use can be prevented by preventing the needle 13a of the lancet 13 from unexpectedly jumping out of the opening 12c of the tip cover 12 before and after use, and injuring the user. It can be secured sufficiently. In particular, after use, the safety lancet 11 can be removed from the attachment 14, and only the safety lancet 11 can be safely discarded as it is.

  Furthermore, since the safety lancet 11 is attached to the main body 20 via the attachment 14 in the cartridge 10 of the present embodiment, the attachment of the attachment 14 to the conventional main body 20 makes it possible to Only the attachment 14 can be purchased and the conventional main body 20 can be used. And even when making the lancet 13 disposable, since the attachment 14 and the main-body part 20 can be used repeatedly, a user's economical burden can be further reduced.

(2)
In the cartridge 10 of this embodiment, the lancet 13 is held by the tip cover 12 by the holding portion 12 d formed on the tip cover 12 and the flange portion 13 b formed on the lancet 13. Further, the cartridge 10 uses an expansion portion 14b formed inside the attachment 14 as a mechanism for releasing the holding of the lancet 13.

  Thereby, even if it is a simple structure, the holding | maintenance of the lancet 13 in the front-end | tip cover 12 and holding | maintenance cancellation | release can be easily performed only by attaching the safety lancet 11 with respect to the attachment 14. FIG. That is, as described above, when the safety lancet 11 is attached to the attachment 14, the extended portion 14b elastically deforms the body portion 12b of the tip cover 12 outward in the radial direction. A holding portion 12d for holding the flange portion 13b of the lancet 13 is formed on the inner wall surface side of the trunk portion 12b. For this reason, the holding | maintenance part 12d moves to the said radial direction outer side by the elastic deformation of the trunk | drum 12b mentioned above. Since the holding portion 12d holds the flange portion 13b of the lancet 13 from the outside in the radial direction, the holding of the lancet 13 can be released by the movement outward in the radial direction.

  As described above, the cartridge 10 of the present embodiment provides the lancet device 1 that can hold and release the lancet 13 with a simple configuration without requiring a complicated mechanism, and ensures high safety. it can.

(3)
In the cartridge 10 of this embodiment, the front end cover 12 is integrally formed by injection molding or the like using resin together with the flange portion 12a, the body portion 12b, the opening 12c, and the holding portion 12d. Further, the attachment 14 is also integrally formed by injection molding or the like using resin together with the distal end portion 14a, the extended portion 14b, and the body portion 14c.

  Thereby, the structure which can hold | maintain and cancel holding | maintenance of the lancet 13 by simple structure is realizable, without providing a separate member as a holding mechanism and holding | maintenance release mechanism of the lancet 13. FIG.

(4)
In the cartridge 10 of this embodiment, the amount of protrusion from the opening 12c of the needle 13a of the lancet 13 is adjusted by rotating the rotating body 6 around the axial direction of the needle 13a of the lancet 13.

Thereby, the puncture depth can be adjusted according to the user.
(5)
In the lancet device 1 of the present embodiment, the cartridge 10 is attached to the main body 20.

Thereby, all the effects obtained by the cartridge 10 described above can be obtained as the lancet device 1.
[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
In the said embodiment, the lancet device 1 demonstrated and demonstrated the example provided with the safety lancet 11, the attachment 14, and the main-body part 20. FIG. However, the present invention is not limited to this.

  For example, if the attachment 14 is integrated with the main body portion 20 and the extension portion 14b is formed on the main body portion 20 even if the attachment 14 is apparently not provided, the same effect as the above-described embodiment can be obtained. Can be obtained.

(B)
In the embodiment described above, an example in which the extended portion 14b formed inside the attachment 14 is used as a configuration for expanding the body portion 12b of the tip cover 12, particularly the holding portion 12d, outward in the radial direction has been described. However, the present invention is not limited to this.

  For example, as shown in FIG. 16, in a state where the safety lancet 11 is attached to the attachment 14, the holding of the lancet 13 in the tip cover 12 is not released, and the safety cap 13 d attached to the tip of the lancet 13. As shown in FIG. 17, the body 12b of the tip cover 12 is glued onto the convex protrusion 15 formed in the vicinity of the tip flange of the attachment 14 by rotating the needle 13a around the axial direction. The holding of the lancet 13 by the step portion 12d may be released by raising and elastically deforming outward in the radial direction. When the lancet 13 is discarded after puncturing, the holding portion 12d that has been lifted on the protrusion 15 is elastically moved to the original position by rotating the tip cover 12 in a direction opposite to the rotation direction in which the tip cover 12 is released. Then, the lancet 13 can be held in the tip cover 12 again.

  As a result, the same effects as those of the above embodiment can be obtained, and the lancet device 1 with higher safety can be provided because the holding of the lancet 13 in the tip cover 12 is not released simply by attaching the safety lancet 11 to the attachment 14. it can.

  In the lancet device 1 shown in FIGS. 16 and 17, after the distal end cover 12 is inserted into the attachment 14, the cap 13d of the puncture needle 13 is rotated in a predetermined direction around the axial direction of the needle 13a. To do. Here, the force required for the body 12 b of the tip cover 12 to get over the protrusion 15 is smaller than the coupling force between the cap 13 d and the tip cover 12. For this reason, before the coupling between the cap 13d and the tip cover 12 is released, the body portion 12b of the tip cover 12 can be ridden on the protrusion 15 to release the holding of the puncture needle 13 in the tip cover 12. it can.

  Note that the method of setting the safety lancet 11 inserted into the attachment 14 is not limited to the method of setting by turning the cap 13d, and may be a method of setting the tip cover 12 by rotating it directly.

(C)
In the embodiment described above, an example in which the holding portion 12d of the tip cover 12 and the extension portion 14b are used as the mechanism for holding and releasing the lancet 13 has been described. However, the present invention is not limited to this.

  In addition to the mechanisms shown in FIGS. 16 and 17, the lancet device 1 with high safety can be provided in the same manner as described above by forming the tip cover 12, the lancet 13, and the attachment 14 into various shapes.

(D)
In the embodiment described above, an example in which a spring force is used as the mechanism for firing the lancet 13 has been described. However, the present invention is not limited to this.

For example, not only spring force but also electromagnetic force or air force may be used.
(E)
In the above embodiment, the lancet device 1 having a function of firing the lancet 13 to form a puncture wound has been mainly described as an example. However, the present invention is not limited to this.

  For example, as shown in FIG. 19, a sensor (detection unit) 18 that detects a blood sugar level or the like contained in blood may be provided in the casing of the lancet device 1. In this case, the blood glucose level can be measured as it is, not only by forming a puncture wound, but also by attaching blood flowing out from the puncture wound to the sensor 18. Note that the attachment position of the sensor 18 is preferably provided inside the tip cover 12 adjacent to the needle 13a of the lancet 13, as shown in FIG. Thereby, the blood adhering to the needle 13a which formed the puncture wound can be easily attached to the sensor 18.

  Since the puncture needle cartridge and the puncture device of the present invention have the effect of providing a puncture needle cartridge with higher safety even with a simple configuration, the puncture needle cartridge and puncture device of the present invention are widely used for puncture devices used in various fields. Applicable.

The perspective view which shows the external appearance of the puncture device which concerns on one Embodiment of this invention. The exploded view which decomposed | disassembled the puncture device of FIG. 1 for every component. The perspective view which shows the structure of the safety lancet of FIG. The perspective view which shows the structure of the attachment of FIG. The perspective view which shows the main-body part of FIG. The exploded view of the main-body part of FIG. (A) is a perspective view which shows the rotary body attached to the front-end | tip part of the main-body part of FIG. 6, (b) is the sectional drawing. Sectional drawing which shows the guide member attached to the front-end | tip of the main-body part of FIG. Sectional drawing which shows the structure inside the main-body part of FIG. Sectional drawing which shows the structure inside the safety lancet of FIG. Sectional drawing which shows the front-end | tip part of the lancet device of a state before attaching a safety lancet with respect to a main-body part. Sectional drawing which shows the front-end | tip part of the lancet device of the state after attaching a safety lancet with respect to a main-body part. Sectional drawing which shows the state of the front-end | tip part of the lancet device just before use. Sectional drawing which shows the state of the front-end | tip part of the lancet device at the moment of puncture. Sectional drawing which shows the front-end | tip part of the lancet device of the state from which the safety lancet was removed from the attachment after puncture. The figure which shows other embodiment of the puncture needle cartridge of this invention. The figure which shows the holding | maintenance cancellation | release state in the puncture needle cartridge of FIG. The figure which shows the example which inserted the safety cap into the opening of the front-end | tip cover in the opposite direction. Sectional drawing which shows the front-end | tip part of the lancet device which concerns on other embodiment of this invention.

Explanation of symbols

1 Lancet device (puncture device)
4 Lancet holder 5 Holder adapter 6 Rotating body (Projection adjustment mechanism)
10 Cartridge (puncture needle cartridge)
11 Safety lancet (tip unit)
12 Tip cover (casing)
12a Flange portion 12b Body portion 12c Opening 12d Holding portion (Puncture needle holding portion)
13 Lancet (puncture needle)
13a Needle 13b Flange (held part)
13c trunk 13d safety cap 14 attachment (adapter)
14a Tip portion 14b Expansion portion (holding release portion)
14c Body part 15 Protrusion part 18 Sensor (detection part)
20 Main body portion 21 Main body casing 22 Operation cap 31 Guide member 32 Through hole 33 Protruding portion 34 Recessed portion 35 Rear end portion 36 Outer flange portion 37 Inner flange portion 38 Linear recessed portion 39 Spiral recessed portion (projection amount adjusting mechanism)
40 engaging claw 41 recessed portion 42 flange portion 50 flange portion 51 pressing portion 60 movable portion 61a, 61b projecting piece 62 flange portion 63 notch 64 projection 65a, 65b inclined projection (projection amount adjusting mechanism)
66 Annular recess 67 End 68 Scale N1 Puncture direction N2 Retraction directions S1, S2 Coil spring

Claims (19)

A puncture needle cartridge which is attached to a main body portion provided with an urging portion for firing a puncture needle and constitutes a puncture device together with the main body portion,
A tip having the puncture needle, a casing formed with an opening for projecting the tip of the puncture needle, and a puncture needle holding portion that holds the puncture needle in a puncture direction so as to be immovable Unit,
An adapter that has a holding release part that releases the holding of the puncture needle by the puncture needle holding part only when the tip unit is attached, the tip unit at one end, and an adapter to which the main body part is attached at the other end;
A puncture needle cartridge comprising: The puncture needle is formed with a held portion that is held by the puncture needle holding portion,
The puncture needle holding part holds the held part from the outside in the radial direction of a circle centering on the axial direction of the puncture needle,
The puncture needle cartridge according to claim 1. When the distal end unit is attached to the adapter, the holding release unit moves the puncture needle holding unit outward in the radial direction and releases the holding of the held portion by the puncture needle holding unit.
The puncture needle cartridge according to claim 2. The holding release unit rotates together with the puncture needle and the puncture needle holding unit when the puncture needle is rotated in a predetermined direction around the axial direction after the tip unit is attached to the adapter. Moving the puncture needle holding portion radially outward to release the held portion by the puncture needle holding portion;
The puncture needle cartridge according to claim 2. The casing is integrally molded;
The puncture needle cartridge according to any one of claims 1 to 4. The adapter is integrally molded,
The puncture needle cartridge according to any one of claims 1 to 5. The adapter includes a protruding amount adjusting mechanism for adjusting the amount of the puncture needle protruding from the opening.
The puncture needle cartridge according to any one of claims 1 to 6. The protrusion amount adjusting mechanism moves the adapter in the puncture direction with respect to the main body while maintaining the position of the puncture needle with respect to the urging portion of the main body.
The puncture needle cartridge according to claim 7. The adapter is screwed in a circumferential direction around the axial direction of the puncture needle and is rotatably attached to the main body portion.
The puncture needle cartridge according to claim 8. A tip unit having a puncture needle, and a casing formed with an opening for projecting the tip of the puncture needle and a puncture needle holding portion that holds the puncture needle in a puncture direction so as to be immovable When,
Only when the tip unit is attached, a holding release unit that releases the holding of the puncture needle by the puncture needle holding unit, and a puncture needle that is released from the holding of the tip unit by the holding release unit is fired. A body portion having a force portion;
Puncture device with The puncture needle is formed with a held portion that is held by the puncture needle holding portion,
The puncture needle holding part holds the held part from the outside in the radial direction of a circle centering on the axial direction of the puncture needle,
The puncture device according to claim 10. When the distal end unit is attached to the main body, the holding release unit moves the puncture needle holding unit outward in the radial direction, and releases the holding of the held unit by the puncture needle holding unit.
The puncture device according to claim 11. The holding release portion rotates with respect to the puncture needle holding portion together with the puncture needle when the puncture needle is rotated in a predetermined direction around the axial direction after the tip unit is attached to the main body portion. And moving the puncture needle holding portion outward in the radial direction to release the held portion by the puncture needle holding portion.
The puncture device according to claim 11. The casing is integrally molded;
The puncture device according to any one of claims 10 to 13. The main body further includes a protrusion amount adjusting mechanism for adjusting a protrusion amount of the puncture needle from the opening.
The puncture device according to any one of claims 10 to 14. The main body includes a main body casing that houses an urging portion for firing the puncture needle, and an adjustment unit attached to the tip of the main body casing,
The protruding amount adjusting mechanism moves only the adjusting portion in the puncturing direction while maintaining the position of the puncture needle with respect to the main body casing.
The puncture device according to claim 15. The adjustment portion is screwed in a circumferential direction centered on the axial direction of the puncture needle and is rotatably attached to the main body casing.
The puncture device according to claim 16. It is a tip unit that is attached to a main body portion that includes an urging portion for firing the puncture needle and a holding release portion that releases the holding of the puncture needle in the puncturing direction, and constitutes a puncture device together with the main body portion. And
The puncture needle;
An opening for projecting the tip of the puncture needle, and holding the puncture needle by the holding release unit only when the puncture needle is housed in the puncture direction and is held immovable in the puncture direction and attached to the main body. A puncture needle holding part for releasing
With
Tip unit. A main body having an urging portion for firing a puncture needle;
A tip unit having the puncture needle, an opening for projecting the tip of the puncture needle, and a puncture needle holding unit that holds the puncture needle accommodated in the puncture direction in an immovable manner;
An adapter that is attached between and constitutes a puncture device,
A holding release unit that releases the holding of the puncture needle in the puncture needle holding unit only in a state where the tip unit is attached;
adapter.

Images