CN101166466B - Puncturing device and puncturing needle cartridge - Google Patents
Puncturing device and puncturing needle cartridge Download PDFInfo
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- CN101166466B CN101166466B CN2006800141450A CN200680014145A CN101166466B CN 101166466 B CN101166466 B CN 101166466B CN 2006800141450 A CN2006800141450 A CN 2006800141450A CN 200680014145 A CN200680014145 A CN 200680014145A CN 101166466 B CN101166466 B CN 101166466B
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- extension spring
- lancet
- puncture needle
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Abstract
A needle insertion instrument has a plunger (2) provided with a lever (3) whose rotation is partly restricted, and the needle insertion instrument is constructed as follows: forwardly directed urging force is applied to the lever (3) by contracting restoring force of a pulling spring (4), and, when the lever (3) is further advanced by inertia of the plunger (2) from a position after which the urging force is not applied to the lever (3), the lever (3) functions as a lever to again extend the pulling spring (4), causing the plunger (2) to be urged in the direction to a rear end by restoring force of the spring. Further, an insertion needle cartridge has a lancet body (203) having an insertion needle and an insertion needle holder (201) for movably receiving the lancet body (203). The lancet body (203) has an arm means (302), and the insertion needle holder (201) has in it a to-be-engaged means (403) cooperating with the arm means (302). The construction above enables a production process to be simplified, multiple insertion of an insertion needle to be prevented, needle insertion speed to be adjusted, and an insertion needle to be safely disposed after use.
Description
Technical field
The present invention relates to before carrying out hemanalysis for from collection blood such as finger tip and lancet device that uses and the piercing needle cartridge of changing usefulness thereof.
Background technology
At present, in order to carry out hemanalysis, invented the various lancet devices that are used for gathering blood, also invented the lancet device (for example, with reference to patent documentation 1) of the active force that savings is used to puncture when being installed in puncture needle on the lancet device in recent years from human or animal's skin.Such lancet device utilizes two compression springs, and first compression spring that promptly is used to puncture and the second compression spring that is used to extract puncture and pull out action.And, for the piercing needle cartridge that prevents from because of blood adheres to the infection that produces, also developed to be used for to carry out waste treatment with the part of contact skin.
Figure 10 is the cutaway view of existing lancet device 1100.In Figure 10, the natural place of push rod 1002 is subjected to the restriction of the whole length of the above-mentioned first compression spring 1000, when puncturing, push rod 1002 compresses the restoring force of spring 1000 by the reinforcing of forward end direction by first, when pulling out, by the restoring force quilt direction reinforcing to the back-end of the second compression spring 1001.In Figure 10, load lever 1003 rearward slides, puncture needle 1004 is installed on the lancet device, simultaneously, lays in the active force that is used to puncture by the first compression spring 1000 and the second compression spring 1001.
Figure 11 is the cutaway view of existing piercing needle cartridge 1101.As shown in figure 11, piercing needle cartridge 1101 is made of the puncture needle over cap 1006 of puncture needle retainer 1005, lancet (the ラ Application セ ッ ト) body 1007 with puncture needle 1004 and protection puncture needle 1004.Puncture needle retainer 1005 is taken in lancet body 1007.In addition, lancet body 1007 can be taken in to axis direction movably in puncture needle retainer 1005 inside.And, by large-diameter portion 1008 is set on lancet body 1007, if do not apply the power of regulation, then lancet body 1007 will be not to the peristome side of puncture needle retainer 1005, promptly before extreme direction move.
The piercing needle cartridge 1101 of said structure is installed on the lancet device 1100, and simultaneously, lancet body 1007 embeds the push rod 1002 of lancet device 1100.And, when puncturing, moving this push rod 1002 by utilizing augmentor, lancet body 1007 forward end directions eject, and puncture needle 1004 is outstanding from the peristome of puncture needle retainer 1005, by like this site of puncture being punctured.After puncture, in case extract puncture needle 1004 from the site of puncture, then lancet body 1007 moves to the direction opposite with preceding extreme direction (back extreme direction) by the augmentor of lancet device 1100, and puncture needle 1004 is accommodated in the puncture needle retainer 1005 once more.
Patent documentation 1: TOHKEMY 2000-245717 communique
But, use like that at as shown in figure 10 existing lancet device under the situation of two compression springs, need guarantee to determine the precision of whole length of the first compression spring 1000 of the natural place of push rod 1002, as everyone knows, in general be difficult to from the precision of the whole length of guaranteeing to compress spring in form, therefore, in order to ensure the precision of product, have the two ends etc. that critically to grind the above-mentioned first compression spring 1000, the problem of guaranteeing necessary size.And the distribution of the power that power that must consideration can puncture and puncture needle return effectively needs the technology of height so that the ratio of the spring pressure of the above-mentioned first compression spring 1000 and the second compression spring 1001 reaches the most appropriate.And, compress under the situation of springs in two of the augmentor uses of push rod 1002, produce the reciprocating motion, the i.e. vibration that form by the compression spring, make puncture needle repeatedly pierce through skin owing to vibrating, pain increases, and makes the patient increase misery.And the investigation to the patient recently shows that be not only the pain when puncturing, the collision sound of lancet device has more increased patient's fear.
And if use existing piercing needle cartridge 1101 shown in Figure 11, though then can change puncture needle safely, the piercing needle cartridge 1101 of Figure 11 is the structures that can reuse the puncture needle 1004 that once used once.Promptly, owing to can will once use once and be installed on the lancet device once more from the piercing needle cartridge 1101 that lancet device is pulled up, therefore, then can make puncture needle more than 1004 time outstanding from the peristome of puncture needle retainer 1005 if laid in active force by installing once more.Therefore, might reuse, cause the problem etc. of infection because not changing the puncture needle 1004 that once used once.
And when piercing needle cartridge shown in Figure 11 1101 was installed on the lancet device 1000, if puncture needle over cap 1006 is not installed, then puncture needle 1004 can be outstanding sometimes.And, though be provided with on lancet body 1007 that if large-diameter portion 1008 does not apply the power of regulation then lancet body 1007 can not move, but carried out the piercing needle cartridge 1101 after the one-time puncture action in case remove the fastening that forms by large-diameter portion 1008, make the piercing needle cartridge of extracting from lancet device 1101 to inferior, then puncture needle 1004 is outstanding from the peristome of puncture needle retainer 1005 sometimes, covers then the problem of danger close if having not wear when carrying out waste treatment.
The present invention proposes in order to solve above-mentioned existing problem, its objective is provides a kind of lancet device and piercing needle cartridge, this lancet device and piercing needle cartridge can be realized the simplification of the manufacturing process of lancet device, simultaneously, can prevent repeatedly piercing through of puncture needle, and can adjust puncture speed, and can safely the puncture needle after using be carried out waste treatment.
Summary of the invention
In order to solve above-mentioned problem, the lancet device of technical scheme 1 of the present invention has push rod and extension spring in front end has the housing of peristome, and described push rod keeps puncture needle separatably, and this push rod can be kept slidably to the fore-and-aft direction of described housing; Described extension spring to described push rod to its fore-and-aft direction reinforcing, it is characterized in that, on described push rod, the rotating shaft of installing to be arranged on this push rod at its rear is the bar that the center can be rotated within the specific limits, the front end of described extension spring is fixed on and is fixed on the intravital first extension spring stator of described shell, the rear end of described extension spring hangs on the second extension spring fixed part that is arranged on the described rotating bar, described second extension spring fixed part and described push rod are distolateral backward moves linkedly side shifting to the back-end, make the direction of principal axis elongation of described extension spring to this lancet device, the restoring force of described extension spring by producing to its direction of principal axis elongation, via the preceding extreme direction reinforcing of the described second extension spring fixed part and the described push rod of described pole pair to described housing, at described push rod by to the active force of this preceding extreme direction and forward end direction when moving, the fulcrum shaft and the described rotating shaft of described rotating bar that are arranged on the described housing contact with side edge part between the described second extension spring fixed part, after contact, described push rod further forwards moves by inertia force, simultaneously, described fulcrum shaft is rearward depressed described rotating bar, thus, described extension spring stretches once more by described rotating bar, this extension spring by this restoring force of forming of stretching once more to the direction reinforcing to the back-end of described push rod.
And, the lancet device of technical scheme 2 of the present invention is in technical scheme 1 described lancet device, it is characterized in that, first projection is set on described push rod, and the lockplate of setting and described first protrusions snap, the restoring force of passing through to form to its axial stretching of described extension spring is to the reinforcing of described push rod to the preceding extreme direction of described housing, engaging by described first projection and described lockplate limits, if described lockplate is moved by the operation of carrying out from the outside, remove the engaging of described first projection and lockplate, then described extension spring makes described push rod move to the preceding extreme direction of described housing by the active force to its preceding extreme direction.
And, the lancet device of technical scheme 3 of the present invention is in technical scheme 2 described lancet devices, it is characterized in that, have puncture speed guiding mechanism, this puncture speed guiding mechanism can be adjusted restoring force, the adjustment puncture speed of described extension spring by the axial position that changes described lockplate.
And, the lancet device of technical scheme 4 of the present invention is in technical scheme 1 to 3 in each described lancet device, it is characterized in that, has the piercing needle cartridge ejection mechanism, this piercing needle cartridge ejection mechanism has after the puncture release, at the inner side end butt of described enclosure interior and this piercing needle cartridge and with its piston ejector ram, ejector piston to foreign side's release, the piercing needle cartridge ejection mechanism launches described piercing needle cartridge.
And the piercing needle cartridge of technical scheme 5 of the present invention is made of lancet and puncture needle retainer, and described lancet is made of the puncture needle over cap of lancet body with puncture needle and the described puncture needle of protection; Described puncture needle retainer has peristome, portion takes in described lancet body movably within it, it is characterized in that, described lancet body also has arm assembly, this arm assembly has the one end and is connected with this lancet body, the shape that the other end is opened towards the expansion of the front taper of this lancet body ground, and can to the center position of described lancet body or outside the direction strain, described puncture needle retainer is the retainer of tubular, this retainer also have with described arm assembly association moving by fastening device, and can take in described lancet body movably to the second position along axis direction from primary importance, this primary importance be described arm assembly be positioned at described by the primary position of the described lancet body of the rear end side of fastening device or the puncture ready position, the described second position is the outstanding position of puncture needle, described lancet body from described primary importance to the puncture direction when moving, being moved of described arm assembly and described puncture needle retainer by fastening device association, outer direction strain towards this lancet body, simultaneously, this is described by the coupling part butt of an end of fastening device and described arm assembly, fastening is moved to this puncture direction, this piercing needle cartridge is in case insert lancet device from the rear end side of described lancet body, then described arm assembly engages with the housing of this lancet device, center position strain to this lancet body, because it is not moving with being assisted of described puncture needle retainer by fastening device, described lancet body moves to the described second position from described primary importance, the action of puncturing, after puncture finishes, with this piercing needle cartridge when this lancet device is pulled down, in case spur this piercing needle cartridge, then described lancet body and described puncture needle retainer remotely move mutually, turn back to described primary importance from the 3rd position as the puncture end position, in case further spur this piercing needle cartridge, then remove the engaging of the housing of described arm assembly and described lancet device, simultaneously, remove the strain of described arm assembly to the center position of this lancet body.
The piercing needle cartridge of technical scheme 6 of the present invention is in technical scheme 5 described piercing needle cartridges; it is characterized in that; describedly formed by the protuberance that is arranged on described puncture needle retainer inside by fastening device; described puncture needle over cap is protected described puncture needle; simultaneously; when being inserted lancet device, this piercing needle cartridge can fix described lancet body; described lancet body is not moved in described puncture needle retainer; insert lancet device in case will have this piercing needle cartridge of described puncture needle over cap; then with the fixing described lancet body of the mode that in described puncture needle retainer, does not move; simultaneously; described arm assembly engages with the housing of described lancet device; described arm assembly is to the center position strain of lancet body; insert lancet device in case will pull down this piercing needle cartridge of described puncture needle over cap; then described lancet body and described puncture needle retainer closely move mutually; simultaneously; described arm assembly and described moving by the protuberance of fastening device association, described arm assembly is to the outer direction strain of lancet body.
The piercing needle cartridge of technical scheme 7 of the present invention is in technical scheme 5 described piercing needle cartridges, it is characterized in that, described lancet body has first protuberance at its main part, described puncture needle retainer has the groove that engages with described first protuberance at axis direction, described groove guides described first protuberance, and described lancet body moves at axis direction in described puncture needle retainer inside.
The piercing needle cartridge of technical scheme 8 of the present invention is characterized in that in technical scheme 5 described piercing needle cartridges described lancet body also has the second moving protuberance of rear end face association with described puncture needle retainer in its main part rear end.
The piercing needle cartridge of technical scheme 9 of the present invention is in technical scheme 8 described piercing needle cartridges, it is characterized in that, described piercing needle cartridge is that described lancet is assembled into parts on the described puncture needle retainer, described second protuberance is made of the material of elastically deformable, it is the shape that tilts to the body rear end of this lancet body, when described lancet portion of assembling and described puncture needle retainer, the rear end of the described lancet front end from described puncture needle retainer is inserted, and one side is simultaneously assembled the described second protuberance strain.
According to lancet device of the present invention, a fixing end of extension spring, the other end is hung over the front end that can be installed on the bar on the push rod rotationally in prescribed limit, make its side shifting to the back-end linkedly with distolateral backward the moving of above-mentioned push rod, above-mentioned extension spring is extended at direction of principal axis, can be by the restoring force that this elongation produces to the reinforcing of above-mentioned push rod forward end direction, and if move to above-mentioned bar and fulcrum position contacting, then above-mentioned rotating bar is that rotate at the center with the rotating shaft that is arranged on the above-mentioned push rod, the further forward end direction of above-mentioned push rod moves, simultaneously, above-mentioned extension spring is by above-mentioned rotating bar elongation, can be by its restoring force to the direction reinforcing to the back-end of above-mentioned push rod, like this, an available extension spring constitutes the augmentor to push rod forward end direction and back extreme direction reinforcing, can realize the simplification of the manufacturing process of lancet device, simultaneously, can prevent repeatedly piercing through of puncture needle.
And, come Accommodation power by the position that changes lockplate, can adjust puncture speed, by forming best puncture speed, can reduce the way of feeling of pain.
In addition, the puncture needle by adopting the band housing also makes up ejection mechanism, after puncture, not with puncture needle and run into the part (housing) of skin but contact with regard to the waste treatment puncture needle, can improve safety, protect from infection and by puncture needle cause injured etc.
And, according to piercing needle cartridge of the present invention, form following structure, promptly, lancet body and puncture needle retainer with band puncture needle, and lancet body also has arm assembly, the puncture needle retainer have with arm assembly association moving by fastening device, this arm assembly with by fastening device association when moving, the fastening lancet body moves to the puncture direction, therefore, can make puncture needle only outstanding when puncture, by improving the safety of piercing needle cartridge like this.
And; when the piercing needle cartridge that will use once, pull down the puncture needle over cap is installed on the lancet device; because the arm assembly of lancet body and puncture needle retainer is moving by fastening device association, therefore can prevent to reuse the puncture needle that used once.
In addition, because first protuberance of puncture needle retainer groove guiding lancet body, lancet body moves to axis direction in puncture needle retainer inside, and therefore, lancet body is carried out more collinear motion in the puncture needle retainer, have the effect that eases the pain.
And, owing to second protuberance that moves with the rear end face association of puncture needle retainer is set, therefore can prevent that lancet body from coming off from the puncture needle retainer in the main part rear end of lancet body, have the effect that improves safety.
In addition, second protuberance is made of the material of elastically deformable and forms the shape that tilts towards the main part rear end of lancet body, when assembling lancet and puncture needle retainer, insert the rear end of lancet from the front end of puncture needle retainer, therefore and one side is simultaneously assembled this second protuberance strain, has the effect in the assembling man-hour that can cut down piercing needle cartridge.
Description of drawings
Fig. 1 (a) is the pie graph of the lancet device of first embodiment of the present invention.
Fig. 1 (b) is the pie graph of the lancet device of first embodiment of the present invention.
Fig. 2 is the action diagram of push rod of first embodiment of the present invention and the state diagram of extension spring.
Fig. 3 is the figure of an example of the lockplate position adjusting mechanism (puncture speed guiding mechanism) of first embodiment of the present invention.
The figure of an example of the lancet device that Fig. 4 is piercing needle cartridge that second embodiment is installed, puncture.
Fig. 5 is the pie graph of the piercing needle cartridge of second embodiment.
Fig. 6 is the pie graph of lancet of the piercing needle cartridge of second embodiment.
Fig. 7 is the cutaway view of puncture needle retainer of the piercing needle cartridge of second embodiment of the present invention.
Fig. 8 is the lancet in the piercing needle cartridge of second embodiment of the invention and the assembly drawing of puncture needle retainer.
Fig. 9 (a) is that the inside of lancet device before puncture that the piercing needle cartridge of second embodiment of the invention has been installed constitutes cutaway view.
Fig. 9 (b) is that the inside of lancet device under the puncture holding state that the piercing needle cartridge of second embodiment of the invention has been installed constitutes cutaway view.
Fig. 9 (c) is that the inside of lancet device when puncture that the piercing needle cartridge of second embodiment of the invention has been installed constitutes cutaway view.
Fig. 9 (d) is that the inside of lancet device after puncture that the piercing needle cartridge of second embodiment of the invention has been installed constitutes cutaway view.
Fig. 9 (e) is the cutaway view of the lancet device when the piercing needle cartridge of discarded second embodiment of the invention.
Fig. 9 (f) is the cutaway view of the lancet device internal structure in the piercing needle cartridge of second embodiment of the invention, in the time of will once using the piercing needle cartridge of once pulling down the puncture needle over cap to be installed on the lancet device.
Figure 10 is the cutaway view of existing lancet device.
Figure 11 is the cutaway view of existing piercing needle cartridge.
The specific embodiment
(first embodiment)
Utilize Fig. 1 to describe with regard to the lancet device of first embodiment of the present invention.
Fig. 1 is the pie graph of the lancet device of first embodiment of the present invention.Fig. 1 (a) pulls down to comprise piston ejector ram, ejector piston 9, piston ejector ram, ejector piston spring 10, launch button 12, launch the cutaway view of state of the ejection mechanism part of lock pawl 13 and lock pawl spring 14, and Fig. 1 (b) is the cutaway view that the state of ejection mechanism part has been installed.
In Fig. 1, the lancet device of first embodiment mainly is made of base plate 1 that is arranged on housing 15 inside and the push rod 2 that remains on slidably on the base plate 1.At this, above-mentioned housing 15 and base plate 1 also can one constitute.
Have the peristome 15b that is used for piercing needle cartridge 16 is inserted front end on housing 15, the pin degree of depth is adjusted knob 6 and is entrenched in rotationally on this peristome 15b, and the pin degree of depth is adjusted knob 6 and had the support 6a that limits its amount of movement when push rod 2 is axially mobile.
The support 6a of above-mentioned pin degree of depth adjustment knob 6 has spiral-shaped, by adjusting knobs 6 with respect to housing 15 rotations, the axial amount of movement of push rod 2 is changed.At this, Fig. 1 represents that support 6a and pin degree of depth adjustment knob 6 are the situation of one, but also can be to separate independent parts.
Above-mentioned push rod 2 is made of puncture needle maintaining part 2a, the first projection 2b and the slip restriction 2c of portion from fore-end.
The lancet body 16b that puncture needle 16a is remained among the puncture needle retainer 16d remains in the piercing needle cartridge 16 slidably, has the puncture needle over cap 16c of protection puncture needle 16a at the front end of puncture needle 16a.When using this lancet device, pull out puncture needle over cap 16c, because puncture needle 16a is positioned at the inside of puncture needle retainer 16d, therefore can make the user of this lancet device can't see pin and not have fear ground to puncture.
The first projection 2b is arranged on the push rod 2, engages with lockplate 5.
The slip restriction 2c of portion of above-mentioned push rod 2 slides by limiting push rod 2 forward end directions with support 6a butt.
At the rear of push rod 2, bar 3 can engage with rotating shaft 2d within the specific limits rotationally, and the rear end that front end is fixed on the extension spring 4 on the first extension spring stator 1b is fastened on the second extension spring fixed part 3a.
Below utilize Fig. 2 to describe with regard to the action that the lancet device that utilizes first embodiment that constitutes as described above punctures.
Fig. 2 be push rod 2 when being positioned at natural place, puncture ready position and puncture position extension spring 4 and the state diagram of bar 3.
In Fig. 2, natural place is that expression extension spring 4 makes the position of push rod 2 after the place ahead of housing 15 direction moves by bar 3; The puncture ready position is the position that is expressed as follows the push rod under the state, under this state, in case with the rear end side pushing of push rod 2 to housing 15, then these push rod 2 one sides make extension spring 4 extend at direction of principal axis, one moves towards the lancet device rear end side, but move when making the first projection 2b and lockplate 5 arrive clamped positions by this, fastening is to the reinforcing of push rod 2 forward end directions; Puncture position is the position that is expressed as follows the push rod 2 under the state, under this state, remove the engaging of push rod 2 and lockplate 5, the forward end direction moves push rod 2 by the active force of the forward end direction of extension spring 4 generations, and push rod 2 further moves above natural place, forward end direction by the inertia of push rod 2.
Be at push rod 2 under the state of natural place, the operator is installed in piercing needle cartridge 16 on the puncture needle maintaining part 2a of push rod 2, then, and the push rod 2 of direction pushing to the back-end.In case push rod 2 direction to the back-end moves, then limit bar 3 that direction left rotates also linkedly to the back-end direction move, thus, extension spring 4 axially stretches.
If further to housing 15 pushings, then first projection 2b of push rod 2 and lockplate 5 engage with push rod 2, fastening is to the reinforcing of push rod 2 forward end directions, and like this, push rod 2 is in the puncture ready position.
At this puncture ready position, in case pushing is arranged on the action button 7 on the housing 15, then lockplate 5 moves, removes this engaging to removing the direction that engages with the first projection 2b, and push rod 2 is by the restoring force quilt forward end direction reinforcing suddenly of extension spring 4.
Reinforcing by the forward end direction that forms by extension spring 4, when push rod 2 and bar 3 forward end directions move, be arranged on fulcrum shaft 1a on the above-mentioned housing 15 and above-mentioned rotating bar 3, above-mentioned rotating shaft 2d contacts with side edge part 3b between the above-mentioned second extension spring fixed part 3a, after carrying out this contact, above-mentioned push rod 2 further forwards moves by inertia force, like this, push rod 2 further forwards moves, simultaneously, above-mentioned fulcrum shaft 1a simultaneously makes above-mentioned rotating bar 3 to right-hand rotation one side it rearward be pressed, by like this, above-mentioned extension spring 4 is elongated once more by above-mentioned rotatable bar 3, under the effect of the restoring force of this extended once more extension spring 4, above-mentioned push rod 2 is by direction reinforcings to the back-end.After push rod 2 turns back to natural place, by its inertia force surmount natural place and further move to before the puncture position of extreme direction, puncture at this puncture position, and, push rod 2 by direction reinforcing to the back-end, turns back to natural place from this puncture position, finishes the puncture action.
In above-mentioned action, the active force of push rod 2 forward end directions makes above-mentioned extension spring 4 extend at direction of principal axis, and push rod 2 forward end directions are moved, when the first projection 2b of push rod 2 and lockplate 5 engage, the reinforcing of push rod 2 forward end directions is obtained this engaging by fastening.This moment the active force of the push rod 2 forward end directions elongation according to extension spring 4 is determined, therefore, can adjust,, can adjust puncture speed by like this by the position that changes lockplate 5.
Adjust by the position that changes above-mentioned lockplate 5 puncture speed mechanism constitute various schemes, Fig. 3 represents a wherein example.
In Fig. 3, latched position is adjusted projection 5a and is connected with lockplate 5, make this latched position adjust the mechanism that projection 5a engages with the spiral groove 8a of speed adjustment knob 8 by formation, adjust knob 8 and can change the position of above-mentioned latched position adjustment projection 5a on direction of principal axis by rotary speed, the position of lockplate 5 is moved to the fore-and-aft direction of housing 15.
Pain during although puncture depends on the craspedodrome of puncture speed, puncture needle and the shape of needle point, but in the first embodiment, by utilizing above-mentioned puncture speed guiding mechanism control puncture speed, can provide pain little lancet device.
After the puncture release, in Fig. 1 (b), via launch button 12, piston ejector ram, ejector piston 9 by utilizing 10 reinforcings of piston ejector ram, ejector piston spring is released the inner side end of piercing needle cartridge 16 to the place ahead of housing 15, by like this, hands need not contact piercing needle cartridge 16 and just it can be pulled down from lancet device.
At this, launch lock pawl 13 and lock pawl spring 14 and be the active force that is used to resist above-mentioned piston ejector ram, ejector piston spring 10, the parts of locking piercing needle cartridge ejection mechanism, when launching, remove this and launch lock-out state by the above-mentioned button 12 that launches, launch thus.
And, with piercing needle cartridge 16 when housing the place ahead is released, the rearward end of the leading section butt puncture needle retainer 16d of above-mentioned piston ejector ram, ejector piston 9, should cover to housing the place ahead and release, thus, can under the state of the depths that puncture needle 16a is accommodated in puncture needle retainer 16d, release piercing needle cartridge 16, the safety of the piercing needle cartridge 16 after can guaranteeing to pull down.
As mentioned above, lancet device according to first embodiment, via the first extension spring stator 1b front end of extension spring 4 is fixed on the housing 15, make the rear end of extension spring 4 and the second extension spring fixed part 3a engaging of the bar 3 that can engage with push rod 2 rotationally within the specific limits, to moving of lancet device rear end side the rear end of this extension spring 4 is moved with above-mentioned push rod 2 to the lancet device rear end side, this extension spring 4 is extended at direction of principal axis, by the restoring force that this elongation produces, can make above-mentioned push rod 2 afterburning mobile to the preceding extreme direction of above-mentioned housing 15 via the above-mentioned second extension spring fixed part 3a.And, in a single day above-mentioned push rod 2 surmounts its natural place and the forward end side shifting, then by such effect of the above-mentioned rotatable bar 3 that contacts with fulcrum shaft 1a, extension spring 4 is elongated once more by above-mentioned bar 3, can be to this push rod 2 direction reinforcing to the back-end by its restoring force.Like this, available extension spring constitutes the augmentor to push rod forward end direction and back extreme direction reinforcing.And, become the position of fulcrum of the oscillation center of above-mentioned bar by change, change the ratio of the brachium of lever, available same extension spring obtains the best use of power of direction to the back-end, the simplification of the manufacturing process of lancet device can be realized, simultaneously, the effect that repeatedly pierces through of puncture needle can be prevented.
(second embodiment)
Below utilize Fig. 4 to Fig. 9 to describe with regard to the piercing needle cartridge of second embodiment of the present invention.
The exemplary plot of the lancet device that Fig. 4 is piercing needle cartridge that second embodiment is installed, puncture.As shown in Figure 4, the piercing needle cartridge 102 of second embodiment is installed on the lancet device 101.To make the outstanding direction (direction of arrow among Fig. 4) of puncture needle as preceding extreme direction, direction that will be opposite with preceding extreme direction (opposite direction of the direction of arrow among Fig. 4) be as the back extreme direction.
Below utilize Fig. 5, Fig. 6 and Fig. 7 to describe with regard to the concrete formation of the piercing needle cartridge 102 of second embodiment.
Fig. 5 is the pie graph of the piercing needle cartridge of second embodiment.In Fig. 5, piercing needle cartridge 102 has puncture needle retainer 201, puncture needle over cap 202 and lancet body 203.Puncture needle over cap 202 covers the puncture needle of lancet body 203, is accommodated in as the lancet 204 that is made of this puncture needle over cap 202 and lancet body 203 in the inside diameter 205 of puncture needle retainer 201 of tubular.In addition, the piercing needle cartridge 102 of second embodiment can move so that the mode that puncture needle can be given prominence to is taken in along its axis direction in puncture needle retainer 201 with lancet body 203.
Below utilize Fig. 6, Fig. 7 to be specifically described with regard to the puncture needle retainer 201 and the lancet 204 of the piercing needle cartridge in the pie graph 5 102.
Fig. 6 is the pie graph of lancet 204.In Fig. 6; lancet 204 has the lancet body 203 of band puncture needle 301 and the puncture needle over cap 202 of protection puncture needle 301, and puncture needle 301 has identical shaped puncture needle protection portion 307 by the body with lancet body 203 that has in the puncture needle over cap 202 and protects.And lancet body 203 has arm assembly 302, lancet body first protuberance 303 and lancet body second protuberance 304.
The fastening portion 305 of one end of arm assembly 302 is connected with lancet body 203, the leading section 306 of the other end the front taper of lancet body 203 extend.And, arm assembly 302 to the center position of lancet body 203 or outside the direction strain.
Fig. 7 is the cutaway view of puncture needle retainer 201.
As shown in Figure 7, puncture needle retainer 201 has the skin contact part 402 that forms peristome 401 at front end, also have its inside by protuberance form, this protuberance and arm assembly 302 associations are moving by fastening device 403.And puncture needle retainer 201 engages with first protuberance 303 of lancet body 203, has as the puncture needle retainer groove 404 that makes lancet body 203 further straight-line guiding pieces at axis direction.And puncture needle retainer 201 has the moving puncture needle retainer rear end face 405 of lancet body second protuberance, 304 associations with lancet body 203 in order to prevent that extreme direction comes off before lancet body 203.
In addition, in second embodiment, form first and second protuberances are separately positioned on the structure at two places, but be not limited to this quantity, for example also can form the structure that only is arranged on a place respectively.
And, first protuberance is formed long size parts, but is not limited to this, so long as the shape that the guiding by puncture needle retainer groove 404 is moved lancet body 203 more point-blank gets final product.
And, in second embodiment, illustrated that lancet body 203 has first, second protuberance, puncture needle retainer 201 has the structure of the groove that engages with each protuberance, but also can be in contrast, formation is forming groove, has the structure of protuberance at axis direction in puncture needle retainer 201 respectively on the lancet body 203, make the engaging of above-mentioned groove and raised part, and lancet body 203 is moved more point-blank.
And piercing needle cartridge 102 shown in Figure 5 is by constituting in the inside diameter 205 that lancet 204 is assembled into puncture needle retainer 201.At this moment, as shown in Figure 8, insert the rear end of lancet body 203 from the peristome 401 of puncture needle retainer 201.And, second protuberance 304 is that the material by the elastically deformable of resin etc. forms, in addition, form the shape of easy insertion puncture needle retainer 201 by the shape that constitutes second protuberance 304 in the mode that for example tilts towards the main part rear end of lancet body, lancet body 203 can simultaneously make these second protuberance, 304 strains, one side easily lancet 204 is pressed into position shown in Figure 5 thus.By like this, can lancet body be assembled on the puncture needle retainer easily, can cut down the man-hour of assembling piercing needle cartridge.In addition, in second embodiment, the position of the lancet body 203 after the assembling of shown in Figure 5, lancet 204 and puncture needle retainer 201 finished is as the primary position (following as primary importance) of lancet body 203.
Like this, on the primary importance of the lancet body 203 after the assembling of lancet shown in Figure 5 204 and puncture needle retainer 201 finishes, in lancet body 203 under situation about moving in the opposite direction with puncture side, rear end by arm assembly 302 with and/or rearward end 405 butts of first protuberance 303 and puncture needle retainer, can block lancet body 203 only to in the opposite direction mobile of puncture side, and, even in lancet body 203 under puncture direction situation about moving, the arm assembly 302 of lancet body and also will be assisted by fastening device 403, carry out strain by arm assembly 302 in the mode of expanding towards the outer direction of lancet body 203, and the fastening portion 305 of arm assembly and by fastening device 403 butts, fastening lancet body 203 moves to the puncture direction.By like this, the piercing needle cartridge 102 of second embodiment can be formed on the state that is not installed on the lancet device down and from above-mentioned primary importance when puncture position moves, the outstanding structure of puncture needle.
Utilize Fig. 9 (a) to (f) to describe with regard to the puncture action that the piercing needle cartridge that constitutes as described above carries out.
Fig. 9 (a) is that the inside of lancet device before puncture that the piercing needle cartridge 102 of second embodiment of the invention has been installed constitutes cutaway view.Fig. 9 (b) is that the inside of pulling down the lancet device under puncture needle over cap 202, the puncture holding state constitutes cutaway view.Fig. 9 (c) is that the inside of the lancet device of the position that puncture needle is given prominence to when puncture constitutes cutaway view.Fig. 9 (d) is that the inside of the lancet device after the puncture constitutes cutaway view.Fig. 9 (e) be with piercing needle cartridge 102 from lancet device the formation cutaway view when discarded.
At first; shown in Fig. 9 (a); by being inserted lancet device 101, installs piercing needle cartridge 102; shown in Fig. 9 (b); state from Fig. 9 (a); pull down puncture needle over cap 202, wait the state formation SBR that punctures down of having put aside active force at the loading spring by lancet device (not having diagram).
Shown in Fig. 9 (a) and Fig. 9 (b), before puncture and under the puncture holding state, the lancet body 203 of piercing needle cartridge 102 is identical with the position of puncture needle retainer 201 relation, promptly, identical with the primary importance of lancet body 203 shown in Figure 5, arm assembly 302 is positioned at by the rear end side of fastening device 403.Like this, the piercing needle cartridge 102 of second embodiment with arm assembly 302 be positioned at by the primary importance of the rear end side of fastening device 403 as the puncture ready position, piercing needle cartridge 102 is installed on the lancet device 101, when mounted, the housing 602 of lancet device is controlled the rear end part of puncture needle retainer 201, and push rod 601 is controlled the rear end part of lancet body 203.
At this moment, arm assembly 302 by the housing 602 of lancet device to the center position strain of lancet body, the standby of puncturing.That is, the arm assembly 302 of the piercing needle cartridge in Fig. 9 (a) and (b) and 602 engagings of the housing of lancet device are compared with Fig. 5, and the position of the arm assembly 302 of lancet body is to the center position strain of puncture needle body.
And; puncture needle over cap 202 is when being installed in piercing needle cartridge 102 on the lancet device 101; in order to arrest this over cap easily puncture needle retainer cover 603 is set; for when puncture needle over cap 202 is turned on and palmistry is suitable and rotation easily, the part that keeps during with rotation forms embossing shape 604.
In addition, in second embodiment, in order to fit easily and the puncture needle over cap to be formed embossing shape 604, but be not limited thereto, also can form octagon or finger shape with palmistry.
And; puncture needle over cap 202 protection puncture needles; simultaneously; for this lancet body 203 is not moved in the puncture needle retainer; hold puncture needle retainer cover 603 one sides by one side and carry out the installation of piercing needle cartridge, can make puncture needle retainer 201 and lancet body 203 not move, make housing 602 engagings of arm assembly 302 and lancet device mutually.That is, in the inside diameter 205 of puncture needle retainer 201, by the puncture needle protection portion 307 of puncture needle over cap 202 and the fore-end butt of lancet body 203, fixedly lancet body 203, and lancet body 203 is not moved in the puncture needle retainer.
And in the primary importance shown in Fig. 9 (b), user be by the skin contact part 402 that is placed on puncture needle retainer 201 such as pointing, the puncture button actions such as (not having diagram) of pushing lancet device 101 action of puncturing.
At this moment, shown in Fig. 9 (c), in the piercing needle cartridge 102 when puncture, push rod 601 penetrates lancet body 203 from above-mentioned primary importance by the active force of the loading spring (not having diagram) of lancet device, lancet body 203 and push rod 601 forward end directions move, and lancet body 203 moves to the outstanding position (following as the second position) of puncture needle thus.At this moment, shown in Fig. 9 (a) and Fig. 9 (b), the arm assembly 302 of lancet body is to the center position strain of lancet body, thus when lancet body 203 forward end directions move, the arm assembly 302 of lancet body with by fastening device 403 associations does not move the state that formation can be punctured.By like this, the site of puncture is given prominence to, pierced through to puncture needle 301 from the peristome 401 of puncture needle retainer 201.When carrying out this puncture, because lancet body first protuberance 303 and 404 engagings of puncture needle retainer groove, so lancet body 203 can be carried out rectilinear motion along its axis direction.
In addition, the internal diameter 606 by the housing of the lancet device of the internal diameter 605 of fastening device 403 and this piercing needle cartridge of installation of puncture needle retainer forms accordingly and gets final product, be formed on lancet body 203 from above-mentioned primary importance when said second position moves, arm assembly 302 with by the moving structure of fastening device 403 association, that is, form by the internal diameter 606 identical or bigger structures of the internal diameter 605 of fastening device 403 and the housing 602 of lancet device and get final product.
And, do not control at push rod 601 under the situation of lancet body 203, by lancet body second protuberance 304 and puncture needle retainer rear end face 405 butts, can prevent that lancet body 203 from coming off from puncture needle retainer 201.
And, shown in Fig. 9 (d), in the piercing needle cartridge 102 after puncture, get back to original position by the loading spring of lancet device, lancet body 203 from said second position to the back-end direction move, though rest on be when mounted front puncture needle 301 not from the outstanding position of the peristome 401 of puncture needle retainer 201, this position becomes puncture end position (following as the 3rd position).
In addition, in the piercing needle cartridge 102 of second embodiment, though form primary position with lancet body 203 as primary importance and with the structure of this primary importance as the puncture ready position, but be not limited to this, for example, when puncturing preparation, the lancet device that push rod 601 and lancet body 203 is moved for correspondence to the opposite direction of puncture direction, also can form the rear position of above-mentioned primary position structure as the puncture ready position, at this moment, should puncture ready position as primary importance, carry out same action later on and get final product.
Fig. 9 (e) is the figure of the piercing needle cartridge 102 when carrying out waste treatment after the puncture action.
When after puncture finishes, pulling down piercing needle cartridge 102, for piercing needle cartridge 102, user is at first from the state of Fig. 9 (d), hold puncture needle retainer 201, carry out the pull action of this piercing needle cartridge 102, puncture needle retainer 201 and lancet body 203 are moved with being separated from each other, by like this, lancet body 203 turns back to lancet body from above-mentioned the 3rd position arm assembly 302 is positioned at by the primary importance of the rear end side of fastening device 403, the fastening portion 305 of the arm assembly 302 of lancet body and rear end 405 butts of puncture needle retainer, with and/or first protuberance 303 and puncture needle retainer groove 404 butts, in case further carry out pull action, then remove the engaging of push rod 601 and the engaging of the housing 602 of arm assembly 302 and lancet device of lancet body 203 and lancet device, simultaneously, remove the strain of arm assembly 302 to the center position of lancet body.Like this, under the state after the pulling down shown in Fig. 9 (e), lancet body moves to above-mentioned primary importance from above-mentioned the 3rd position, and turn back to original position to the arm assembly 302 of the center position strain of lancet body, therefore, in the puncture needle retainer, even lancet body 203 is moved to the puncture direction, with moving by the association of fastening device 403, puncture needle can not given prominence to yet by arm assembly 302.By like this, when carrying out waste treatment, just can carry out waste treatment safely without the puncture needle over cap.
Describe when below utilizing Fig. 9 (f) to move with regard to the arm assembly 302 of lancet body with by fastening device 403 associations.Fig. 9 (f) be the arm assembly 302 of lancet body and by fastening device 403 association the internal structure figure when moving, for example be the internal structure figure of the lancet device in the time of the piercing needle cartridge 102 that once used once and pulled down puncture needle over cap 202 will being installed in once more on the lancet device 101.Shown in Fig. 9 (f); in case the piercing needle cartridge 102 that once used once and pulled down puncture needle over cap 202 will be inserted lancet device 101; then puncture needle retainer 201 and lancet body 203 closely move mutually; simultaneously; arm assembly 302 and moving by fastening device 403 associations, this arm assembly 302 is strain laterally.By like this,, therefore can not puncture once more because the arm assembly 302 of outward direction expansion and the insertion mouth or the housing butt of lancet device can not be installed to piercing needle cartridge 102 on the lancet device 101 fully.That is, after having carried out the one-time puncture action, the piercing needle cartridge of pulling down from lancet device can not reuse, and simultaneously, can form the not outstanding structure of puncture needle 301.
In addition; even under the state that puncture needle does not once all have to use, pulling down under the state of puncture needle over cap; same with Fig. 9 (f); certainly piercing needle cartridge can not be installed on the lancet device; promptly; owing to have puncture needle over cap 202 being pulled down the back, piercing needle cartridge can not being installed in the structure on the lancet device, therefore, can provide safer piercing needle cartridge.
Like this, the piercing needle cartridge of second embodiment can only make puncture needle 301 outstanding when puncturing, and puncture needle 301 is outstanding from the peristome 401 of puncture needle retainer in the time of can preventing beyond puncture.
As mentioned above; the piercing needle cartridge 102 of second embodiment forms following structure; promptly; lancet body 203 and puncture needle retainer 201 with band puncture needle 301; and; lancet body 203 has arm assembly 302; puncture needle retainer 201 have with arm assembly 302 association moving by fastening device 403; when moving at this arm assembly 302 and by fastening device 403 associations; stop lancet body 203 moving to the puncture direction; therefore, puncture needle can be only outstanding when puncturing, the safety that can improve piercing needle cartridge; and; when the piercing needle cartridge 102 that will once use once and pull down puncture needle over cap 202 is installed on the lancet device 101,, can prevent to use the puncture needle that once used once by the arm assembly 302 of lancet body 203 and being moved of retainer 201 by the association of fastening device 403.
Lancet device of the present invention can be realized the simplification of the manufacturing process of lancet device, simultaneously, can prevent from effectively repeatedly to puncture, can reduce patient's pain, and hands do not contact piercing needle cartridge and just piercing needle cartridge can be pulled down from lancet device, help protecting from infection.
And, piercing needle cartridge of the present invention is very useful as the disposable puncture syringe, this disposable puncture syringe has puncture needle and portion's puncture needle retainer of taking in above-mentioned puncture needle movably and can changing simultaneously with above-mentioned puncture needle within it of the replacing usefulness of the lancet device that is used to take a blood sample etc.
Claims (4)
1. lancet device has push rod and extension spring in front end has the housing of peristome, described push rod keeps puncture needle separatably, and this push rod can be kept slidably to the fore-and-aft direction of described housing;
Described extension spring, is characterized in that to its fore-and-aft direction reinforcing described push rod,
On described push rod, the rotating shaft of installing to be arranged on this push rod at its rear is the bar that the center can be rotated within the specific limits,
The front end of described extension spring is fixed on and is fixed on the intravital first extension spring stator of described shell,
The rear end of described extension spring hangs on the second extension spring fixed part that is arranged on the described rotating bar,
Described second extension spring fixed part and described push rod are distolateral backward moves linkedly side shifting to the back-end, makes the direction of principal axis elongation of described extension spring to this lancet device,
The restoring force of described extension spring by producing to the elongation of its direction of principal axis, via the preceding extreme direction reinforcing of the described second extension spring fixed part and the described push rod of described pole pair to described housing,
At described push rod by to the active force of this preceding extreme direction and forward end direction when moving, the fulcrum shaft and the described rotating shaft of described rotating bar that are arranged on the described housing contact with side edge part between the described second extension spring fixed part, after contact, described push rod further forwards moves by inertia force, simultaneously, described fulcrum shaft is rearward depressed described rotating bar, thus, described extension spring stretches once more by described rotating bar, this extension spring by this restoring force of forming of stretching once more to the direction reinforcing to the back-end of described push rod.
2. lancet device as claimed in claim 1 is characterized in that,
First projection is set on described push rod,
The lockplate of setting and described first protrusions snap on described housing,
The restoring force of passing through to form to its axial stretching of described extension spring is to the reinforcing of described push rod to the preceding extreme direction of described housing, and the engaging by described first projection and described lockplate limits,
If make described lockplate move, remove the engaging of described first projection and lockplate by the operation of carrying out from the outside, then described extension spring makes described push rod move to the preceding extreme direction of described housing by the active force to its preceding extreme direction.
3. lancet device as claimed in claim 2 is characterized in that, has puncture speed guiding mechanism, and this puncture speed guiding mechanism can be adjusted restoring force, the adjustment puncture speed of described extension spring by the axial position that changes described lockplate.
4. as each described lancet device in the claim 1 to 3, it is characterized in that, has the piercing needle cartridge ejection mechanism, this piercing needle cartridge ejection mechanism has after the puncture release, at the inner side end butt of described enclosure interior and this piercing needle cartridge and with its piston ejector ram, ejector piston to foreign side's release, the piercing needle cartridge ejection mechanism launches described piercing needle cartridge.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP132678/2005 | 2005-04-28 | ||
| JP2005132678A JP4584765B2 (en) | 2005-04-28 | 2005-04-28 | Puncture needle cartridge |
| JP143272/2005 | 2005-05-16 | ||
| JP2005143272A JP4536590B2 (en) | 2005-05-16 | 2005-05-16 | Puncture tool |
| PCT/JP2006/308911 WO2006118224A1 (en) | 2005-04-28 | 2006-04-27 | Needle insertion instrument and insertion needle cartridge |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102865169A Division CN101912268B (en) | 2005-04-28 | 2006-04-27 | Puncturing needle cartridge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101166466A CN101166466A (en) | 2008-04-23 |
| CN101166466B true CN101166466B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006800141450A Active CN101166466B (en) | 2005-04-28 | 2006-04-27 | Puncturing device and puncturing needle cartridge |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4584765B2 (en) |
| CN (1) | CN101166466B (en) |
| ES (1) | ES2358353T3 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102805658A (en) * | 2011-05-31 | 2012-12-05 | 上海西门子医疗器械有限公司 | Puncture device |
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| CA2746792C (en) | 2005-04-28 | 2015-10-13 | Panasonic Corporation | Puncture device and puncture needle cartridge |
| CN101437451B (en) * | 2006-05-10 | 2011-01-05 | 松下电器产业株式会社 | Piercing instrument and piercing needle cartridge |
| US8016848B2 (en) | 2006-06-15 | 2011-09-13 | Abbott Diabetes Care Inc. | Lancets and methods of use |
| GB0712107D0 (en) * | 2007-06-22 | 2007-08-01 | Owen Mumford Ltd | Lancing devices |
| KR100912202B1 (en) | 2008-07-03 | 2009-08-14 | (주)보성메디텍 | One body lancet and no pain type blood collecting device |
| US8449480B2 (en) * | 2008-08-07 | 2013-05-28 | Nova Biomedical Corporation | Single use lancet sensor assembly and meter |
| JP4585041B2 (en) * | 2010-03-15 | 2010-11-24 | パナソニック株式会社 | Puncture needle cartridge |
| JP5699410B2 (en) | 2010-12-06 | 2015-04-08 | パナソニックヘルスケアホールディングス株式会社 | Puncture device |
| CN104887242B (en) * | 2014-03-07 | 2018-08-28 | 上海移宇科技股份有限公司 | Analyte sensing system |
| JP5686215B2 (en) * | 2014-03-28 | 2015-03-18 | ニプロ株式会社 | Disposable puncture device |
| CN107205703B (en) * | 2015-02-19 | 2020-07-10 | 泉株式会社 | Syringe, lancet assembly and lancing apparatus |
| WO2018096923A1 (en) * | 2016-11-22 | 2018-05-31 | Ｐｈｃホールディングス株式会社 | Puncture needle cartridge, and puncture instrument for allowing same to be mounted thereto |
| CN107320212B (en) * | 2017-08-11 | 2019-01-04 | 吴平顺 | Livestock fluid infusion therapeutic device |
| CN113710305B (en) * | 2019-05-24 | 2024-07-09 | 贝克顿·迪金森公司 | Needle tract auxiliary device comprising a component and method thereof |
| JP7557077B2 (en) | 2021-01-12 | 2024-09-26 | ローメッド カンパニー リミテッド | Replaceable blood collection device |
| CN115868988B (en) * | 2021-09-28 | 2024-11-08 | 天津华鸿科技股份有限公司 | Blood taking needle |
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| JP4264347B2 (en) * | 2001-07-11 | 2009-05-13 | アークレイ株式会社 | Lancet |
| JP2004113580A (en) * | 2002-09-27 | 2004-04-15 | Ra Systems:Kk | Lancet |
| JP2004290390A (en) * | 2003-03-26 | 2004-10-21 | Bionics Corp | Puncturing needle and its assembling method |
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- 2006-04-27 ES ES06745794T patent/ES2358353T3/en active Active
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| JP特开2004-113580A 2004.04.15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102805658A (en) * | 2011-05-31 | 2012-12-05 | 上海西门子医疗器械有限公司 | Puncture device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2006305143A (en) | 2006-11-09 |
| CN101166466A (en) | 2008-04-23 |
| ES2358353T3 (en) | 2011-05-10 |
| JP4584765B2 (en) | 2010-11-24 |
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