CN201303942Y

CN201303942Y - Skin puncturing device

Info

Publication number: CN201303942Y
Application number: CNU2007900000772U
Authority: CN
Inventors: 克莱夫·尼科尔斯
Original assignee: Owen Mumford Ltd
Current assignee: Owen Mumford Ltd
Priority date: 2006-07-18
Filing date: 2007-06-11
Publication date: 2009-09-09
Anticipated expiration: 2017-06-11
Also published as: DE212007000052U1; PL118133U1; WO2008009984A1; GB0614232D0; GB2440118A

Abstract

The utility model relates to a skin puncturing device (10), which comprises a shell (12), a lance (28) which is arranged inside the shell, and a lance cover (34) which covers the sharp end of a needle (32) of the lance. The needle is leveled to the lance cover along with a moving path inside the shell. The skin puncturing device is also provided with driving devices (46, 54, 62, 66), and the driving devices can move along with the path during a continuous action. The lance is connected with the driving devices through a spring. The driving devices are first connected with the lance cover, so that the cover is removed from the needle and is removed outside the moving path of the needle. The driving devices release the spring, so as to drive the lance along with the removed moving path.

Description

Skin pricking device

Technical field

The present invention relates to a kind of skin pricking device, and especially relate to the skin pricking device that is used to provide blood sample, although optional.

Background technology

In medical science and relevant diagnosis and test field,, often need from object, extract little blood sample in order to test or analyzing blood.Achieving this end usual way is by using little pin to pierce through skin on the position on the close surface of blood vessel.The coalition of the bracing or strutting arrangement of pin and it is the lancet (lancet) known to usually.For fear of infecting and polluting.Preferably, lancet is to be used for single use and is accessible.Therefore, they must be compact allowing user oneself can carry a plurality of lancets, and make cheap.

At present, multiple accessible lancet is arranged on market.Comprising by OwenMumford Ltd (Woodstock, UK) make with the Unistik that sells ^TMExisting design comprises the housing of moulded plastic, and short spring-supported pin is installed in housing.Form flip flop equipment (trigger) in housing, when being pressed, this flip flop equipment discharges lancet, thereby makes most advanced and sophisticated the ejaculation through the opening in the housing go.In the existing design some need operator preload or cock spring before penetrating.In other design, be supplied to by the lancet device of cock.User usually need be before penetrating the front end of slave unit or the tip of pin remove lid.Therefore, in order to carry out the blood sampling program, user must carry out at least two steps, and is three times sometimes.

Need a kind of than the simpler lancet device of existing design operation.Certainly, for manufacturing cost, the design of any improvement must meet high standard.It also must be reliable, thereby guarantee under operating condition lancet device to be offered user.Consider aspect recited above, designed the present invention.

Summary of the invention

According to a first aspect of the invention, provide a kind of skin pricking device, it comprises:

The housing that has opening therein;

The lancet that in described housing, is provided with;

Cover the lancet lid at tip of the pin of described lancet, described pin and lancet lid are along being aligned at the intravital transmission path of described shell, and described opening also aligns with described transmission path;

Driving device, this driving device are in described housing and removable along the direction of described transmission path basically;

Be connected the spring between described driving device and the Folium Salicis Babylonicae knife needle;

Wherein, described driving device makes described spring be compressed along the mobile of described direction, described lid is separated from the Folium Salicis Babylonicae knife needle and is moved to outside the described transmission path, and retracting spring, thereby along the transmission path that is eliminated described lancet is urged to a position, gives prominence to away through the opening in housing at the tip of this position Folium Salicis Babylonicae knife needle.

An advantage is that equipment uses simple and can use it with a hands.Most of parts of equipment can be by the plastic material manufacturing, thereby advantage cheap and that be easy to make is provided.

Preferably, described trigger mechanism is removable with respect to described housing.More preferably, described flip flop equipment is installed in the described housing by telescopically.By described trigger mechanism is pressed in the described housing, can excite described trigger mechanism.

Preferably, before exciting described trigger mechanism, described lancet lid covers the tip of described pin.Afterwards, exciting of trigger mechanism may make guiding device remove lid and remove to outside the mobile route of pin from pin.An advantage is that this operation comprises automatically opens the Folium Salicis Babylonicae knife needle.Before pin is comprised in the equipment, described pin will be sterilized.During fabrication, lid can be over-molded on the pin and before assembled lancet is sterilized, thereby such advantage is provided, and do not need any other parts of pin or equipment are further sterilized, and therefore equipment is prepared to be used for using.

Preferably, the lancet lid is connected to trigger mechanism.In one embodiment, by one or more flexible members, described lancet lid is connected to trigger mechanism.One or more flexible members may be elongated, and its first end is connected to described trigger mechanism and its second end is connected to described lancet lid.

In one embodiment, guiding device is included in the inside of described housing and the complementary structure in the triggering assembling, and when described trigger mechanism moved through described housing, described structure was caught to engage.Described triggering assembling complementary structure can be set on second end of one or more flexible members.Described complementary structure can comprise respectively that wedge or slope and the wedge joint close or the slope connected structure.Preferably, wedge is set on the housing or the inside of housing, and these wedges close structural engagement with the wedge joint that is arranged on second end of one or more flexible members.An advantage is that housing and trigger mechanism can be made easily by for example molded plastic material, to produce described structure.

Preferably, described trigger mechanism comprises the trigger button that is excited by the operator.More preferably, described trigger button is in the outside of described housing.Because action need is pushed flip flop equipment in the housing to excite described equipment simply, therefore described equipment is simple to operate.Handle (grip) can be set on the housing (be moulded to the part of housing or be connected similarly) so that operating equipment.

Preferably, if equipment is launched, described spring is configured to described lancet is fully retracted in the described housing.Preferably, described spring is a platform spring.Described spring possibility quilt is preload partly, to guarantee having enough power to trigger described lancet, to give prominence to and to pierce through people's skin from opening.Described spring by the preload of part may be compressed or extend.Platform spring may integrally form with triggering assembling in its manufacture process.

Described equipment can be provided with the lancet holding device, and this lancet holding device is configured to avoid basically lancet to move through described housing, is excited fully up to described flip flop equipment.Described lancet holding device can be included in the co-acting part on enclosure interior and the lancet.

In one embodiment, described equipment further comprises locking device, if equipment is triggered, described locking device is configured on preposition and states trigger mechanism with respect to described housing and in described housing internal lock residence.This helps avoid any skin-piercing accident and problems such as infection and pollution.

According to a second aspect of the invention, provide the housing that has opening therein and comprise first group of pinning structure;

Be arranged in the described housing and have and be used for engaging releasedly described first group of second group of lancet that pins structure that pins structure;

The lancet lid at the tip of the pin of covering lancet, described pin and lancet lid are along being aligned at the intravital transmission path of described shell, and described opening also aligns with described transmission path;

In described housing and basically the guide tracks of extending along the direction of described transmission path;

Driving device, this driving device are installed on the described guide tracks and have and be used to engage the structure of lancet lid and be used for pinning structure from described first group discharge described second group of structure of pinning structure;

Be connected the spring between described lancet and the driving device; With

Contiguous lancet lid and the lancet lid incline structure that between described lancet lid and described opening, is provided with.

Description of drawings

For a better understanding of the present invention with in order to show how to implement the present invention, will describe by embodiment and with reference to the accompanying drawing of enclosing, wherein:

Fig. 1 is the perspective view of skin pricking device;

Fig. 2 is the perspective view of inboard of upper body of the skin pricking device of Fig. 1;

Fig. 3 does not have upper body, the perspective view of the skin pricking device of Fig. 1;

Fig. 4 is the sectional view along the skin pricking device of plane process Fig. 1 of level;

Fig. 5 is along the sectional view of vertical plane through the skin pricking device of Fig. 1;

Fig. 6 is when the flip flop equipment of described equipment partly is pressed in the housing, the perspective view of the skin pricking device of Fig. 1;

Fig. 7 is the sectional view through the skin pricking device that shows in Fig. 6; With

Fig. 8 is after starting described equipment, the part perspective view of the equipment of Fig. 1.

The specific embodiment

Referring to figs. 1 to Fig. 5, it shows the skin pricking device that the skin that is designed to pierce through the people provides for example little blood sample.Typically, described equipment is used to pierce through the meat pad of finger, thereby stays little blood point on finger.Can collect this blood point (for example service test sheet) afterwards is used to measure or test.As the equipment in Fig. 1 to Fig. 5 demonstration is the position that was in " stand-by " or " beginning " before excitation device.

Skin pricking device 10 comprises the housing 12 of moulded plastic.Housing 12 is made of upper case 14 and lower case 16.For easy, select the reference marker of " bottom " and " top " parts, and be meant in an embodiment along orientation as showing in the accompanying drawings.The inboard of upper case 14 is equipped with outstanding downwards fastens 18, and described bolt 18 is housed in the jack 20 that is arranged on the lower case 16, so that described

shell

14,16 is fixed together.Described equipment is designed to a hand operated, hold an end (" pin end ") with respect to skin, and the other end (" trigger end ") is excited by the operator, to start the skin that described equipment pierces through the people.

At the pin end place of equipment 10, described upper and

lower shell

14,16 is equipped with semicircular recess, and when described

shell

14,16 was combined together, described

shell

14,16 combinations were to provide circular opening 22, and pin can be given prominence to away from opening 22.Upper and

lower shell

14,16 is equipped with anchor clamps 24 (grip), to help operating the described equipment 10 of operating.Flip flop equipment 26 is positioned at housing 12, at the trigger end of equipment 10.Described flip flop equipment 26 has front surface or button 27, and it can be pressed into it further in the housing 12 by the operator and be excited.

Fig. 3 and 4 has shown the equipment 10 that does not have upper case 14, has therefore shown the internal work parts of equipment.

Lancet 28 comprises lancet body 30 and is installed in the one end and at one end interior pin 32.The tip of pin 32 is directed toward the pin end of equipment 10, covers pin 32 to keep aseptic before use with lid 34.Lancet body 30 has circular 36, and pin 32 is outstanding from described 36.Lancet lid 34 has two flexible fingers 38, and it wraps 36 of lancet body, before using it is fixed on herein.

The other end of the lancet body 30 of the trigger end of the most close equipment 10 is connected to eccentric 40 (platform spring that has shown) via adapter 42.At the embodiment that illustrates, adapter 42 comprises the afterbody 42a of the expansion of lancet body 30, and this afterbody 42a is fixed in the shell 42b of the end that is connected to spring 40.The other end of described spring 40 is connected to the inner surface of start button 27.

Two lower limbs 46 pin end from the inner surface 44 of trigger button 27 towards equipment 10 extends.Described flip flop equipment lower limb 46 terminates in the foot 48 of outside upset.Flip flop equipment foot 48 is configured to has the surperficial 49a that faces the inclination of lancet 28 inwards.(go out as shown) on the starting position, the outer surface 49b of flip flop equipment foot 48 is in abutting connection with the foot 50 of upset inwards of lower case 16.Spring 40 may be by preload (promptly being compressed) slightly, impelling trigger button 27 away from housing 12, and

impels foot

48,50 adjacency, equipment 10 is fixed in the state of preparing use.

For lancet 28 is not triggered in hope or before need doing like this, lancet 30 further is provided with two arms 51, and it is arranged on the both sides of adapter 42.Arm 51 extends towards the inner surface 44 of trigger button 27, and terminates in the protuberance 51a place of outside upset.Protuberance 51a has towards the outward-dipping outer surface 51b of the wall of lower case 16.Lower case 16 is equipped with inwards outstanding stop member 52, this stop member 52 in the starting position in abutting connection with the inner surface 51c of protuberance 51a.Stop member 52 has avoided lancet 28 to move prematurely forward.In the illustrated embodiment, in stop member 52, be provided with lower case jack 20.

The inner surface of trigger button 27 also is provided with flexible arm 54.The pin end of flexible arm 54 from the inner surface 44 of trigger button 27 towards equipment 10 extends.Flexible arm 54 terminations and combination are as plate 56.Described plate 56 usefulness act on the supporter that lancet lid 34 is installed.In the embodiment that shows, lancet lid 34 is connected to supporter 56 by fastening 58, described fastening in 58 holes 60 that are located in the lancet lid 34.Upwardly extending slope 62 is arranged on two sides of supporter 56, and slope 62 attenuates to the pin end of equipment 10.

Bottom in the lower case 16 at the contiguous place of the pin end of equipment 10 comprises downward-sloping surface 64.When equipment 10 was on the starting position, having a down dip of the surface 64 of inclination extended towards the pin end of equipment 10 from the position of contiguous lancet lid 34.

As shown in Figure 2, the inboard of upper case 14 comprises outstanding wedge 66 downwards.Wedge 66 attenuates to the trigger end of upper case 14 from the pin end of upper case 14.The gradient of wedge 66 (when upper case 14 during in position for example shown in Figure 1) is corresponding to the gradient of the inclined surface of lower case 16.For example, this can be in sight in Fig. 5.

Finally, flip flop equipment lower limb 46 further comprises outwards outstanding outside pinning (lock-out) lower limb 68.Outwards pinning lower limb 68 is arranged on the contiguous flip flop equipment lower limb of locating 46 of trigger button 27, outwards pins lower limb and separates to trigger button 27 from flip flop equipment lower limb 46.

In Fig. 1 to Fig. 5, show with aforesaid equipment " standby " configuration in.The operation of equipment 10 will be described with reference to figure 6-8.

When the operator began to excite by pushing trigger button 27, as shown in Figure 6, flip flop equipment 26 was impelled to enter into housing 12, and spring 40 is compressed.Flip flop equipment 26 moves to the lower limb 54 that comprises deflection in the housing 12 and is moved further to housing 12, and this has opened lancet lid 34 from 36 of lancet body, with exposed needle 32.After lancet 28 has been opened, and along with flip flop equipment 26 is urged continuously making and entered into housing 12, the wedge 56 of upper case 14 engages the slope 62 of gripper shoes 56.The mobile route of 54 bendings of flip flop equipment lower limb and lancet gripper shoe 56 is downwards along the inclined surface 64 of the bottom of lower case 16.Be appreciated that in mode of operation pin 32 aligns with hole 22, and lancet lid 34 has been moved to outside the mobile route of pin 32.Flip flop equipment 26 pushed compression spring 40 continuously with storage power therein.By the adjacency of Folium Salicis Babylonicae tool arm protuberance 51a and lower case stop member 52, avoided lancet 28 to be launched.At this moment, equipment 10 " is equipped with " (armed) and is prepared emission.Be appreciated that also joint between slope 62 and wedge 66 makes holding that equipment 10 in use can be upside down.

Make the inclined surface 49a of flip flop equipment foot 48 contact to pushing continuously further of trigger button 27 with the inclined surface 51b of Folium Salicis Babylonicae tool arm protuberance 51a.This contact is urged and is made Folium Salicis Babylonicae tool arm 51 inwards toward each other, removes from lower case stop member 52 up to Folium Salicis Babylonicae tool arm protuberance 51a.At this moment, spring 40 is expanded apace, discharges the energy that up to the present is stored in wherein.This impels lancet 28 to pass through housing 12 forward, thereby makes pin 32 22 give prominence to away to pierce through people's skin from the hole.36 of lancet body 30 is caught contact with inner surface around the housing 12 in hole 22, and this contact and around the thickness of the housing 12 in hole 22 can be selected with restriction pin 32 from the outstanding distance of opening 22, so avoided needle-penetration skin too dark.

At this moment, spring 40 is overextended, and as shown in Figure 8, so spring 40 withdrawal to be pulling back pin 32 through via hole 22, and is back in the housing 12.Therefore pin 32 is fixed in the housing 12 of equipment 10 after using, with any skin-piercing accident of avoiding being caused by pin 32.Fig. 8 has shown that also after using, because flip flop equipment lower limb 46 is held in the lower case 16 that is strapped in housing 12, flip flop equipment 26 is fixed in the housing 12.That is to say the foot 50 of flip flop equipment foot 48 in abutting connection with lower case stop member 52 and the lower limb 68 that outwards pins in abutting connection with lower case.So if skin pricking device 10 has been used, when fully not breaking equipment 10, it can not be assembled once more.Unless upper case 14 is removed internal part with exposure device 10 from lower case 16, otherwise may not move flip flop equipment 26 with respect to housing 12.

Equipment 10 can be provided with the indicating device (not shown), and this indicating device is clearly indicated to the operator, and equipment 10 has been used and should be processed have fallen.In case should be pointed out that to be launched, 26 of flip flop equipments are lockable.

Because when pin 32 is embedded in the lancet lid 34, pin 32 is aseptic, and before it pierces through skin, do not contact, so do not need to sterilize or seal the housing 12 except that pin 32 and the lid 34 that centers on or be included in parts in the housing 12 with any other parts of equipment 10.

Have enough power emission lancet 28 in order to ensure spring 40, with 22 outstanding and pierce through people's skin from the hole, spring 40 may be before mounting equipment 10 by preload partly.

Be appreciated that under the situation that does not depart from scope of the present invention those skilled in the art can carry out various modifications to the above embodiments.

Claims

1. a skin pricking device is characterized in that, described skin pricking device comprises:

The housing that has opening therein;

The lancet that in described housing, is provided with;

Cover the lancet lid at tip of the pin of described lancet, described pin and lancet lid are along the intravital transmission path alignment of described shell, and described opening also aligns with described transmission path;

Wherein, described driving device makes described spring be compressed along the mobile of described direction, described lid is separated from the Folium Salicis Babylonicae knife needle and is moved to outside the described transmission path, and spring is released, thereby along unimpeded transmission path described lancet is urged to a position, gives prominence to away through the opening in the housing at the tip of this position Folium Salicis Babylonicae knife needle.

2. equipment according to claim 1 is characterized in that, comprises that further thus, exciting of trigger mechanism makes described driving device move through described housing with respect to described housing trigger mechanism movably.

3. equipment according to claim 2 is characterized in that described trigger mechanism is installed in the described housing by telescopically.

4. equipment according to claim 3 is characterized in that, by described trigger mechanism is pressed in the housing, excites described trigger mechanism.

5. according to each the described equipment in the aforementioned claim, it is characterized in that described driving device is included in the adapter between lancet lid and the trigger mechanism.

6. equipment according to claim 5 is characterized in that, by one or more flexible members, described lancet lid is connected to described trigger mechanism.

7. equipment according to claim 6, wherein, described one or more flexible members are elongated, its first end is connected to described trigger mechanism and its second end is connected to described lancet lid.

8. according to each the described equipment in the aforementioned claim, it is characterized in that on the inside of described housing and driving device complementary structure is set, described complementary structure can be engaged with each other when described driving device moves through described housing.

9. equipment according to claim 8 is characterized in that, described driving device complementary structure is set on described second end of described one or more flexible members.

10. according to Claim 8 or 9 described equipment, it is characterized in that described complementary structure comprises that respectively wedge or slope and the wedge joint close or the slope connected structure.

11. equipment according to claim 10 is characterized in that, on housing or the inside of housing wedge is set, these wedges close structural engagement with the wedge joint that is arranged on second end of described one or more flexible members.

12. each the described equipment according in the aforementioned claim is characterized in that described trigger mechanism comprises the trigger button that is excited by the operator.

13. equipment according to claim 12 is characterized in that, described trigger button is in the outside of described housing.

14. each the described equipment according in the aforementioned claim is characterized in that, if described equipment is launched, described spring is configured to described lancet is fully retracted in the described housing.

15. each the described equipment according in the aforementioned claim is characterized in that described spring is a platform spring.

16. according to each the described equipment in the aforementioned claim, it is characterized in that, further comprise the lancet holding device, this lancet holding device is configured to avoid basically lancet to move through described housing, is excited fully up to described flip flop equipment.

17. equipment according to claim 16 is characterized in that, described lancet holding device is included in the co-acting part on enclosure interior and the lancet.

18. according to each the described equipment in the aforementioned claim, it is characterized in that, further comprise locking device, described locking device is configured to, and under the situation that equipment has been triggered described trigger mechanism is stayed in preposition with respect to described housing and at described housing internal lock.

19. a skin pricking device is characterized in that, described skin pricking device comprises:

Have opening therein and comprise first group of housing that pins structure;

The lancet lid at the tip of the pin of covering lancet, described pin and lancet lid are along the intravital transmission path alignment of described shell, and described opening also aligns with described transmission path;

In described housing and basically the guide tracks of extending along described transmission path;

Driving device, this driving device are installed on the described guide tracks and have to be used to engage the structure of lancet lid and to be used for pinning structure from described first group and discharge described second group of structure of pinning structure;

Be connected the spring between described lancet and the driving device; With

Contiguous lancet lid and the lancet lid deflection structures that between described lancet lid and described opening, is provided with.