JP5176396B2 - Lancet assembly - Google Patents

Description

  The present invention relates generally to a lancet assembly for damaging the skin and collecting a small amount of blood, and more particularly to an improved lancet assembly for ease of use.

  The lancet assembly is pre-sterilized at the time of manufacture, but it needs to be well sterilized so that it is not contaminated by the surrounding environment before the puncturing operation. The piercing element is exposed by removing the cap during the puncturing operation.

A conventional lancet assembly includes, for example, a lancet built in a holder and an ejector, as described in Patent Document 1, and the lancet is formed of a resin, holds a piercing element therein, and has a tip portion thereof. It is configured to be covered with a resin cap joined by various methods such as adhesion, welding, or integral molding. In addition, a notch is formed at the boundary between the lancet and the cap, the holder is held with one hand before the puncturing operation, one end of the cap is held with the other hand, and the two are pulled together to break the resin at the notch. Occurs, the cap can be removed, and the piercing element can be exposed and punctured.
International Publication No. 96/16599 pamphlet

  However, in the conventional configuration, the puncture operator removes the cap from the lancet assembly using both hands during the puncture operation, and then holds the part of the patient to be punctured with one hand and the other hand with the other hand. A process of performing puncture work is required. Therefore, since both hands of the puncture worker are temporarily spent on the preparation work of the lancet assembly, an extra operation is required for the puncture work, or both hands are temporarily restrained. The problem was that the current flow would be interrupted.

  SUMMARY OF THE INVENTION The present invention solves the above-described conventional problems, and an object thereof is to provide a lancet assembly that allows a puncture operator to perform a puncture operation without performing an extra operation of the preparation operation.

In order to solve the conventional problem, a lancet assembly according to claim 1 of the present invention includes:
A lancet having a piercing element at one end, a cap covering the piercing element, a holder for movably holding the lancet, a pressing lever for driving the lancet, and a pressing lever for urging the lancet An ejector that drives the lancet by the operation of the lancet, and the lancet is formed of a resin molded body containing the piercing element, and the piercing element is coated with a resin at an exposed portion of the piercing element. A notch made of resin at a portion to be broken, and a reinforcing rib provided with a notch after the lancet is incorporated in the holder, and a cap that covers the exposed portion and a lancet that holds the piercing element Is separable,
When the ejector is operated after the lancet is assembled in the holder, the pressing lever starts to move, and after the pressing lever comes into contact with the cap restrained by the holder, the cap It moves in the injection direction of the lancet, the resin of the notch is cut, and the cap is separated from the lancet.

A lancet assembly according to a second aspect of the present invention is the lancet assembly according to the first aspect, wherein the ejector has a force for injecting the lancet to a predetermined position after the lancet is injected. The lancet is pulled back .

Furthermore, the lancet assembly according to claim 3 of the present invention is the lancet assembly according to claim 1, wherein the holder includes a guide member that linearly moves the lancet, a guide member that moves the pressing lever, and a pressing lever. It is characterized by having a trigger for restraining the lancet until it reaches a predetermined position and then firing the lancet .

Furthermore, the lancet assembly according to claim 4 of the present invention is the lancet assembly according to claim 1, wherein after the pressing lever starts moving and the cap is separated from the lancet, the cap is discharged from the inside of the holder to the outside. It is characterized by that.

Furthermore, the lancet assembly according to claim 5 of the present invention is the lancet assembly according to claim 1 , wherein the first pressing lever and the second pressing lever are provided as the pressing lever, and the first pressing lever is provided. The cap is moved to be separated from the lancet, and the second pressing lever starts to move after the first pressing lever is operated, and the lancet is ejected .

Furthermore, the lancet assembly according to claim 6 of the present invention is the lancet assembly according to claim 1 or 2 , wherein the ejector is in a state of being compressed or expanded in advance, and one end is engaged with the holder. The other end is made of a spring element engaged with the end of the lancet .

Furthermore, the lancet assembly according to claim 7 of the present invention is the lancet assembly according to claim 1 or 2 , wherein the ejector is engaged with the pressure lever at one end and the lancet at the other end in an unloaded state. It is made of a resin or metal spring element which is attached and compressed or expanded along with the movement of the pressing lever .

  According to the lancet assembly of the present invention, the puncture operation can be simplified by performing the operation with one hand throughout the entire puncture operation process.

Hereinafter, embodiments of the lancet assembly of the present invention will be described in detail with reference to the drawings.
(Embodiment 1)

  FIG. 1A is a perspective view of an initial state before the operation of the lancet assembly 100 according to the first embodiment of the present invention.

  1 (b) to 1 (e) show the respective steps in manufacturing the lancet assembly of FIG. 1 (a).

  FIG. 2 is a perspective view showing the main part so that the configuration of the lancet 1 shown in FIG.

  FIG. 3 is a schematic front view of the lancet assembly in the state of FIG. 1 (a), showing a state in which the lid 41 is removed so that the internal state can be seen.

  FIG. 4 shows a front view of the state where the puncturing operation has progressed from FIG. 3 and the pressing lever 30 has moved the cap 6 in the injection direction.

  FIG. 5 shows a front view of the state where the puncturing operation has progressed from FIG. 4 and the pressing lever 30 has moved the cap 6 to a place avoiding the injection path of the lancet 1.

  FIG. 6 shows a front view of the state where the puncturing operation has proceeded from FIG. 5 and the pressing lever 30 has deformed a part of the holder 40 to release the restraint of the lancet 1.

  FIG. 7 shows a front view of the state in which the released lancet 1 is ejected and the piercing element 5 protrudes from the holder 40.

  FIG. 8 shows a front view of a state where all puncturing operations are completed.

  Next, the configuration of the lancet assembly 100 according to Embodiment 1 of the present invention will be described with reference to FIG.

  In FIG. 1A, a holder 40 holds guide levers 45 and 50 for holding the pressing lever 30 in a linearly slidable manner and moving the lancet 1 linearly in the injection direction, and the lancet. A trigger 47 formed on an elastic plate 46 that abuts on a locking member 10 that is pivotally engaged with the pivot shaft 3 and restrains the lancet 1 from being ejected; A release claw 48 that abuts on a release cam 33 provided in a part of the lever 30 to elastically deform the elastic plate 46 and a lid 41 that is integrally formed with the holder 40 by a hinge 42.

  One end of an ejector 20 that supplies a force for injecting the lancet 1 is engaged with the locking member 10, and the other end of the ejector 20 is engaged with a pin-like body 34 of the pressing lever 30, thereby performing a puncturing operation. The operation of the operator moves the pressing lever 30 along the injection direction, and the ejector 20 expands to store the injection force.

  When the pressing lever 30 starts moving, the front edge portion 31 abuts on the guide shaft 7 of the lancet 1, and the cap 6 can be moved along the guide groove 44 of the holder 40 and the guide groove 49 of the lid 41. It is configured as follows. A detailed configuration of the lancet 1 will be described with reference to FIG.

  The lancet 1 is manufactured by integral molding of a resin provided with a piercing element 5 therein, and the lancet 1 has the cap 6 covering the tip of the piercing element 5 and two front and back surfaces thereof. The formed cylindrical guide shafts 7 and 8, and the notch 4 provided at the boundary between the cap 6 and the lancet 1, and the cylindrical turn for engaging the locking member 10 in a freely rotatable manner. When the moving shaft 3 and the locking member 10 are rotated by receiving the force of the ejector 20, the rear end surface 2 is brought into contact with the locking member 10 at a predetermined position and serves as a rotation stopper of the locking member 10. The lancet 1 and the cap 6 are kept in close contact with the piercing element 5.

The lancet assembly 100 incorporating the lancet 1 is manufactured as follows.
As shown in FIG. 1B, the holder 40 has guide ribs 45 and 50 formed in parallel with each other in the longitudinal direction on the bottom surface thereof, and a substantially L-shaped guide groove is provided near the tip of the guide rib 45. 44 is formed, and an opening 43 is formed on one side surface of the holder 40 located on the extension line of the guide rib 45.

  The lancet 1 is installed from above between the guide ribs 45 and 50 of the holder 40 having such a structure, and the state shown in FIG.

  Next, after the elastic plate 46 of the holder 40 is spread outward and the pressing lever 30 is installed, the expanded elastic plate 46 is released to be restored to its original position by elasticity, and the state shown in FIG. . The pressing lever 30 is integrally formed with a release cam 33, a pin-like body 34, and the like.

  Next, the pressing lever 30 is pushed down a little to install the locking member 10 in the space between the trigger 47 and the release claw 48. At that time, the rotation shaft 3 of the lancet 1 and the opening of the locking member 10 are fitted. Thereafter, one end of the ejector 20 is engaged with the locking member 10 and the other end is engaged with the pin-like body 34, whereby the state shown in FIG. Thereafter, the lid 41 shown in FIG. At that time, the lid 41 is fixed to the holder 40 by engaging a claw or the like (not shown) provided on the lid 41 with the holder 40 or bonding the lid 41 and the holder 40 with an adhesive or the like.

  The disposable lancet assembly 100 is completed by the series of operations described above.

  The operation of the lancet assembly 100 configured as described above will be described with reference to FIGS.

  In the state before the operation shown in FIG. 3, the front edge portion 31 of the pressing lever 30 is separated from the cap 6 by a predetermined distance, and even if the pressing lever 30 moves due to unexpected external force, The cap 6 is not separated from the piercing element 5 due to a malfunction without contact. Further, the ejector 20 is kept in the most contracted state, and consideration is given to reducing the force applied to the pressing lever 30 and the locking member 10. This is to prevent each member of the lancet assembly, which is often made of resin, from creeping, which is a kind of change with time, when the lancet assembly is stored for a long period of time.

  FIG. 4 shows a state in which the puncture operator starts to push the pressing lever 30 in the direction of arrow A. The pressing lever 30 receives the force of arrow A and moves in the injection direction of the lancet 1. When the portion 31 abuts against the cap 6 and the force of the arrow A is directly applied to the cap 6, the notch 4 breaks, the cap 6 is separated from the lancet 1, and the piercing element 5 The cap 6 has moved in the injection direction of the lancet 1 (lower side of the lancet 1 in the drawing) along the line. At this time, the movement of the cap 6 is mainly along the piercing element 5, and the restriction of the moving direction by the fitting of the guide grooves 44, 49 and the guide shafts 7, 8 is subordinate. . The ejector 20 starts to expand as the pin lever 34 moves in front of the lancet 1 as the pressing lever 30 moves, and accumulates the radiation output.

  FIG. 5 further shows that the pressing lever 30 moves in the injection direction, and the pressing lever 30 abuts and moves the cap 6 from the front edge portion 31 to a cam surface 32 that forms an angle of about 45 °. The movement direction of the cap 6 is determined only by the guide grooves 44 and 49 and the guide shafts 7 and 8. This moving direction is changed in an oblique direction (about 45 °) with respect to the injection direction according to the shape of the guide grooves 44 and 49. When the pressing lever 30 further moves, the cap 6 reaches the end of the guide grooves 44 and 49 by the cam surface 39 of the pressing lever 30 and stops moving. The ends of the guide grooves 44 and 49 are formed in a direction perpendicular to the injection direction. The position where the cap has stopped moving is a position that does not hinder the progress of the lancet 1 when it is injected.

  When the pressing lever 30 is further pressed, the release pawl 48 and the release cam 33 come into contact with each other as shown in FIG. 6, and the elastic plate 46 is elastically deformed outward of the holder 40, so that the elastic plate 46 Similarly, the trigger 47 that has been moved outward due to the deformation is separated from the locking member 10. Thereby, when the ejector 20 contracts, the lancet 1 engaged with the locking member 10 is ejected along the guide ribs 45 and 50, and the exposed piercing element 5 passes through the opening 43. As shown in FIG. 7, it protrudes outward from the outer edge of the holder 40 by a predetermined length. Due to inertia, the lancet 1 tends to move until it abuts against the inner surface of the holder 40. The locking member 10 abuts against a stopper 51 provided at a predetermined position of the holder 40 in the vicinity of the end of the moving stroke, and rotates clockwise around the rotation shaft 3 in FIG. The lancet 1 is in a sliding relationship with the stopper 51 and moves the lancet 1 until it abuts against the inner surface of the holder 40. At the same time, the ejector 20 starts to expand, thereby injecting the lancet 1 moved to a predetermined position. Pull back in the opposite direction.

  Then, as shown in FIG. 8, the ejector 20 contracts, and the lancet 1 finishes moving at a position where the ejector 20 balances around the stopper 51. This position is a position where the piercing element 5 cannot be touched by a human hand, which has moved inward from the outer edge of the holder 40 by a predetermined position.

  In this state, the release cam 33 and the release claw 48 mesh with each other, so that the release cam 33 and the release claw 48 serve as a safety device. That is, when the release cam 33 and the release claw 48 mesh with each other, the pressing lever 30 is pulled back to the unused position so that the lancet assembly 100 cannot be used again. Therefore, the lancet assembly 100 is disposable once blood is collected using it.

  Thus, according to the lancet assembly 100 according to the first embodiment, the cap 6 is separated and moved from the lancet 1 by pushing the pressing lever 30 in the injection direction, and the lancet is moved to a predetermined part of the patient. Since the puncture operation can be completed by ejecting 1, for example, the puncture operator holds the patient's part with one hand, simultaneously takes the lancet assembly with the other hand, and pushes the pressing lever 30 with the finger as it is. A puncture operation can be easily performed only by an action.

(Embodiment 2)
FIG. 9 shows a schematic front view of the configuration of the lancet assembly 200 according to the second embodiment, in which the ejector element of the lancet assembly 100 according to the first embodiment is changed.

  In FIG. 9, there is an ejector 60 that accumulates a force by contraction as typified by a compression spring, and one end of the ejector 60 engages with a positioning projection 53 formed on the back surface 52 of the holder 40. The other end is inserted into a long hole 11 formed in the lancet 1.

  The second embodiment is different from the first embodiment in that the ejector 60 is incorporated in a state where the ejector 60 is preliminarily contracted and the force for injecting the lancet 1 is accumulated. The back surface 52 and the long hole 11 of the lancet 1 are sufficient to prevent deformation over time over a long period of time, and the locking member 10 and the stopper 51 are unnecessary.

  The operation of the lancet assembly 200 according to the second embodiment is the same until the pressing lever 30 starts moving and the lancet 1 is ejected, and the only difference is that it protrudes from the outer edge of the holder 40. In order to pull the piercing element 5 into the holder 40, the length of the ejector 60 when it is unloaded is used.

  That is, the ejector has a shorter length than the difference obtained by subtracting the distance between the long hole 11 of the lancet 1 and the tip of the piercing element 5 from the distance between the back surface 52 of the holder 40 and the outer edge 54. By setting the length of 60 when no load is applied, the tip of the piercing element 5 is housed in the holder 40.

  As described above, according to the lancet assembly 200 according to the second embodiment, the ejector that accumulates force by contraction is assembled in the holder in a contracted state in advance, and after the lancet is injected, the ejector is in the unloaded state. Since the lancet is pulled into the holder by using the return to the length, the locking member 10 for returning the piercing element to the inside of the holder after the piercing element protrudes from the holder becomes unnecessary. It is possible to provide a lancet assembly in which the same puncturing operation as in the first embodiment can be realized with a simpler structure.

(Embodiment 3)
FIG. 10 is a schematic front view of the configuration of the lancet assembly 300 according to the third embodiment in which the ejector 60 in the lancet assembly 200 according to the second embodiment shown in FIG. 9 is replaced with another element.

  In FIG. 10, the pressing lever 30 has an elastically deformable curved portion 35, and its tip portion 38 is engaged with the lancet 1, and the bending portion 35 is elastically deformed as the pressing lever 30 moves. Configured to increase. For this reason, when the release cam 33 of the pressing lever 30 releases the release claw 48, the amount of deformation is maximized and a predetermined radiant output is accumulated.

  As described above, according to the lancet assembly 300 according to the third embodiment, a curved portion that can be elastically deformed is provided on the pressing lever, and after the lancet is ejected to the curved portion, similarly to the ejector 60, the curved portion is Since the function of pulling the lancet into the holder using the return to the length at the time of no load is provided, the ejector is not necessary, and therefore, with a simpler structure than the configuration shown in FIG. A lancet assembly capable of performing a similar puncturing operation can be provided.

(Embodiment 4)
FIG. 11 is a schematic front view of the lancet assembly 400 according to the fourth embodiment of the present invention.

  The lancet assembly 400 according to the fourth embodiment is different from the configuration of the lancet assembly 200 according to the second embodiment shown in FIG. 9 in that the pressing lever 30 that is a single member is moved from the lancet 1 to the cap 6. This is a point divided into two: a first pressing lever 36 for separating and moving, and a second pressing lever 37 for injecting the lancet.

  Thus, according to the lancet assembly 400 according to the fourth embodiment, the piercing element 5 is exposed by removing the cap 6 of the lancet 1 by operating the first pressing lever 36 in advance, and then the first piercing element 5 is exposed. Since the time when the lancet 1 is ejected can be operated with the pressing lever 37 of the second, the timing of removing the cap 6 and the timing of ejecting the lancet 1 can be made different depending on the intention of the puncture operator. Puncture work more adapted to the intention is possible.

  Moreover, in the configuration of the lancet assembly 400 of the fourth embodiment, the puncture operator needs to hold the lancet assembly again in the operation of the first pressing lever 36 and the operation of the second pressing lever 37. However, since a puncturing operation is possible as a series of operations, there is no change in providing a simple puncturing operation.

  In Embodiments 1 to 4 described above, the cap removed from the lancet is stored in the holder. However, the cap may be discharged out of the holder by providing an opening on the side surface of the holder.

(Embodiment 5)
In the first to fourth embodiments, the lancet assembly has been shown in which the lancet can be ejected by removing the cap from the lancet by one-hand operation. However, in the fifth embodiment, the cap can be reliably separated by the operation of the pressing lever, and transportation A lancet capable of preventing the cap from coming off due to an external force applied to the inside and preventing the piercing element from being maintained in a sterilized state will be described.

  FIG. 12 shows a schematic perspective view of the lancet assembly 500 according to the fifth embodiment of the present invention in a state where the cap 6 is separated from the lancet 1.

  FIG. 13 is a schematic perspective view of the fifth embodiment of the present invention with the cap 6 separated from the lancet 1.

  FIG. 14 is a schematic front view of the lancet 1 before the cap 6 is separated from the lancet 1 in the fifth embodiment of the present invention.

  FIG. 15 shows an enlarged front view of the main part.

  As shown in FIG. 12, the notch 4 connects the lancet 1 and the cap 6 and is resin-molded in a state where the piercing element 5 is covered inside, and the pressing lever 30 (not shown) is provided. By operating, the notch 4 is broken and separated.

  In order for the notch 4 to break with light pressure during operation, it is better that the thickness covering the piercing element 5 is thinner. However, when the lancet 1 is subjected to unexpected external force during handling such as assembling work or transportation. When the cap 6 is broken and the cap 6 is separated, the piercing element 5 is exposed and cannot maintain a sterilized state.

  In the fifth embodiment shown in FIG. 13 to FIG. 15, a thin notch 13 having a thin resin layer covering the piercing element 5 is provided, and is continuous with the thin notch 13 to prevent the breakage. Reinforcing ribs 14 and 15 are provided. Since the notch 14 is reinforced in this way, handling during assembly and transportation is not different from that of the first embodiment. When the lancet assembly 500 is manufactured, the lancet 1 is assembled in the holder 40, and in the state where no external force is applied to the lancet 1, the notches 16 and 17 are formed in the shape shown in FIG. Give.

  As the method for producing the cut, a known cutting method such as cutting by press, melting by heat, melting by ultrasonic waves, melting by laser or the like is used, and the notches 16 and 17 are not given to the thin notch 14. As a result, the sterilized state of the piercing element 5 is maintained and the pressure required to separate the cap 6 can be reduced, and the cap can be reliably separated by operating the pressing lever. .

  The lancet can be used alone without being incorporated into the lancet assembly. In this case, the merit of removing the cap with one hand is lost, but it is possible to prevent the cap from coming off due to external force during transportation, etc. It is possible to remove the cap.

  As described above, according to the lancet assembly 500 according to the fifth embodiment, the thickness of the notch connecting the lancet and the cap is reduced, and in order to prevent the cap from falling off due to an external force generated during transportation or the like, When the lancet assembly is assembled, the reinforcement ribs are cut when external force is no longer applied to the lancet, so the cap can be removed by external force generated during transportation, etc., and the sterilized state of the piercing element 5 can be maintained. It is possible to prevent the cap from being lost and to easily remove the cap when the lancet is used.

  As described above, in the lancet assembly according to the present invention, in order to remove the cap for maintaining the sterilized state, both hands of the puncture worker are temporarily spent on the preparation work of the lancet assembly, and the continuous medical work flow is interrupted. It is useful for simplifying the puncturing work because the operation can be completed over the entire area of the puncturing work process with only one hand.

The perspective view of the initial state before operation | movement of the lancet assembly by Embodiment 1 of this invention The front view of the holder which comprises the lancet assembly by Embodiment 1 of this invention The front view which shows the state which attached the lancet to the holder which comprises the lancet assembly by Embodiment 1 of this invention. The front view which shows the state which mounted | wore with the press lever further to the holder which comprises the lancet assembly by Embodiment 1 of this invention. The front view which shows the state which further mounted | wore the latching member and the ejector to the holder which comprises the lancet assembly by Embodiment 1 of this invention. The perspective view which shows the principal part of the structure of the lancet 1 in the lancet assembly 100 of the said Embodiment 1. FIG. The typical front view which shows the state which removed the lid | cover 41 of the lancet assembly 100 of the said Embodiment 1. FIG. Front view of lancet assembly 100 of the first embodiment showing a state in which the puncturing operation has progressed from the state of FIG. 3 and pressing lever 30 has moved cap 6 in the injection direction. FIG. 4 is a front view of the lancet assembly 100 according to the first embodiment showing a state in which the puncturing operation has progressed from the state of FIG. 4 and the pressing lever 30 has moved the cap 6 to a place avoiding the injection path of the lancet 1. Front view of the lancet assembly 100 of the first embodiment showing a state in which the puncturing operation has progressed from the state of FIG. 5 and the pressing lever 30 has deformed a part of the holder 40 to release the restraint of the lancet 1. Front view showing a state in which the released lancet 1 is ejected and the piercing element 5 protrudes from the holder 40 of the lancet assembly 100 of the first embodiment. Front view showing a state where all puncturing operations of lancet assembly 100 of the first embodiment are completed. The typical front view which shows the structure of the lancet assembly 200 by Embodiment 2 of this invention which changes the ejector element in the lancet assembly 100 of the said Embodiment 1 into a different structure. FIG. 9 is a schematic front view showing a configuration of a lancet assembly 300 according to a third embodiment of the present invention, in which the ejector 60 in the lancet assembly 200 of the second embodiment shown in FIG. 9 is further changed to an ejector element having a different configuration. Schematic front view showing a lancet assembly 400 according to Embodiment 4 of the present invention. The typical perspective view which shows the state from which the cap 6 was isolate | separated from the lancet 1 in the lancet assembly 500 by Embodiment 5 of this invention. Schematic perspective view showing a state where cap 6 is separated from lancet 1 in lancet assembly 500 according to Embodiment 5 of the present invention. Typical front view which shows the lancet 1 before the cap 6 is isolate | separated from the lancet 1 in the lancet assembly 500 of Embodiment 5 of this invention. The front view which expanded the principal part of the lancet assembly 500 of the said Embodiment 5 shown by FIG.

Explanation of symbols

100 lancet assembly 200 lancet assembly 300 lancet assembly 400 lancet assembly 500 lancet assembly 1 lancet 2 rear end face 3 pivot shaft 4 notch 5 piercing element 6 cap 7 guide shaft 8 guide shaft 10 locking member 11 long hole 13 thin notch 14 reinforcement Rib 15 Reinforcement rib 16 Notch 17 Notch 20 Ejector 30 Pressing lever 31 Front edge 32 Cam surface 33 Release cam 34 Pin-shaped body 35 Curved portion 36 First pressing lever 37 Second pressing lever 38 Tip 39 Cam surface 40 Holder 41 Lid 42 Hinge 43 Opening 44 Guide groove 45 Guide rib 46 Elastic plate 47 Trigger 48 Release claw 49 Guide groove 50 Guide rib 51 Stopper 52 Back surface 53 Projection 54 Outer edge 60 Ejector

Claims (7)

A lancet having a piercing element at one end, a cap covering the piercing element, a holder for movably holding the lancet, a pressing lever for driving the lancet, and a pressing lever for urging the lancet Equipped with an ejector that drives the lancet by
The lancet is formed of a resin molded body containing the piercing element, and the piercing element has an exposed portion coated with resin, and a notch made of resin at a predetermined portion to be broken of the resin coating portion , Reinforcing ribs provided with cuts are provided after the lancet is incorporated in the holder , and can be separated into a cap that covers the exposed portion and a lancet that holds the piercing element,
When the ejector is operated after the lancet is assembled in the holder, the pressing lever starts to move, and after the pressing lever comes into contact with the cap restrained by the holder, the cap Move in the injection direction of the lancet, the resin of the notch is cut and the cap is separated from the lancet,
A lancet assembly characterized by that. The lancet assembly of claim 1, wherein
The ejector has a force to inject the lancet, and pulls the lancet back to a predetermined position after the lancet is injected;
A lancet assembly characterized by that. The lancet assembly of claim 1, wherein
The holder includes a guide member that linearly moves the lancet, a guide member that moves the pressing lever, and a trigger that restrains the lancet until the pressing lever reaches a predetermined position and then fires the lancet.
A lancet assembly characterized by that. The lancet assembly of claim 1, wherein
After the pressing lever starts to move and separates the cap from the lancet, the cap is discharged from the inside of the holder to the outside.
A lancet assembly characterized by that. The lancet assembly of claim 1, wherein
As the pressing lever, a first pressing lever and a second pressing lever are provided,
The first pressing lever moves the cap to separate it from the lancet,
The second pressing lever starts to move after operating the first pressing lever and injects the lancet.
A lancet assembly characterized by that. The lancet assembly according to claim 1 or claim 2, wherein
The ejector is in a state compressed or expanded in advance, and comprises a spring element having one end engaged with the holder and the other end engaged with the end of the lancet.
A lancet assembly characterized by that. The lancet assembly according to claim 1 or claim 2, wherein
The ejector is made of a resin or metal spring element that is unloaded and has one end engaged with the pressing lever and the other end engaged with the lancet, and is compressed or expanded as the pressing lever moves. Become,
A lancet assembly characterized by that.

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