Source: https://patents.google.com/patent/US8876846B2/en
Timestamp: 2019-01-18 02:36:22
Document Index: 52787081

Matched Legal Cases: ['art 1', 'art 1', 'art 1', 'art 1', 'art 1', 'art 2', 'art 1', 'art 7', 'art 1', 'art 1', 'art 2', 'art 1', 'art 1', 'art 2', 'art.\n7']

US8876846B2 - Disposable/single-use blade lancet device and method - Google Patents
US8876846B2
US8876846B2 US13892845 US201313892845A US8876846B2 US 8876846 B2 US8876846 B2 US 8876846B2 US 13892845 US13892845 US 13892845 US 201313892845 A US201313892845 A US 201313892845A US 8876846 B2 US8876846 B2 US 8876846B2
US13892845
US20140005709A1 (en )
This application is a continuation of U.S. application Ser. No. 12/719,647 filed Mar. 8, 2010 which is a divisional of application Ser. No. 11/265,151, filed Nov. 3, 2005, The disclosures of each of these applications is incorporated by reference herein in its entirety.
According to one aspect of the invention, the guiding arrangement at least comprises two spaced apart ribs coupled to the body, a slide linearly guided by the two spaced apart ribs, a first projection of the blade member extending into an opening of the slide, and a connecting member having one end movably mounted to a projection of the body and another end movably connected to a second projection of the blade member.
As can be seen in FIGS. 1-3, the lancet body 2/1 can have a generally rectangular shape and can preferably also have an ergonomic shape to facilitate comfortable gripping/holding. Of course, the invention contemplates other shapes for the lancet body provided that they result in a relatively inexpensive design and/or which is economical to produce. As explained above, the front end of the lancet device LD includes a skin engaging surface SCS which is defined by outer surface of the trigger cap 3 (see FIGS. 19-21). A lancet blade opening BO extends through an end wall of the trigger cap 3 and serves to allow the tip of lancet blade member 5 to penetrate beyond the surface SCS (see e.g., FIG. 26). In this regard, the trigger cap 3 is movably mounted to the front end portion of the lancet body. In the instant embodiment, the trigger cap 3 is a generally rectangular-shaped cap member for reasons of aesthetic design. However, the invention contemplates a variety of shapes for the trigger cap 3 such as, e.g., oval, triangular, square, polygonal, etc. Moreover, in the instant embodiment, the trigger cap 3 is generally centrally mounted, relative to the sides of the lancet body. However, the invention contemplates other locations and/or positions for the trigger cap 3, provided such locations allow the lancet device to function properly. Other ways of associating the trigger cap 3 on the lancet body are expressly contemplated, such as, e.g., being integral with the housing and acting as a living hinge or spring. The trigger cap 3 is installed in an opening formed by partial openings 1 a and 2 a of the front cover 2 and rear cover 1 and is sized to slide within the opening in a smooth low-friction manner. As can be seen in FIGS. 19-21, the trigger cap 3 has shoulders 3 a which engage inner surfaces of the opening 1 a/2 a (see e.g., FIG. 24) whereby the trigger cap 3 is prevented from falling out of the lancet body once installed. The trigger cap 3 is also sized to be slide intro and/or be pushed into the lancet body (see e.g., FIGS. 25 and 26). However, this movement is resisted owing to the fact that the trigger cap 3 is biased towards an extended position (see e.g., FIG. 24) via a coil extension spring 4 and also by virtue of engagement between the slide member 6 and the deflecting arms 3 b and 3 c. This biasing force and engagement can be overcome, however, when the trigger cap 3 is pushed into the lancet body sufficiently (see e.g., FIGS. 25 and 26) by applying a force to the surface SCS. Furthermore, because the trigger cap 3 includes an opening BO, once triggered, the blade tip 5 a will be allowed to pass there-through (see e.g., FIG. 26) in order to penetrate a user's skin. Moreover, because the trigger cap 3 also includes the deflecting arms 3 b and 3 c and, due to the tapered surfaces 6 c and 6 d, the trigger cap 3 is prevented from moving back to a pre-triggered position by the slide member 6, the blade member 5, the connecting member 7, and the spring 4. Thus, once triggered, the lancet device LD is automatically rendered unusable again—thereby rendering the device a single-use device, a safe device because the blade member 5 is safely contained in the housing, and a device which can be disposed of safely.
The lower body part 1 preferably has a front portion 1 e which has a smaller cross-section than the main portion of the part 1. The purpose of this smaller cross-section front portion is to allow the protecting cap PC to be easily installed thereon (see FIGS. 1-3) without significantly increasing an overall width, length and thickness of the lancet device LD. The lower body part 1 also preferably has, with the exception of portion 1 e and the indented finger gripping portion FEB, a generally planar inner surface 1 i which extends between the generally straight side walls. The lower body part 1 additionally preferably includes two plate-like guiding projections or ribs 1 d which are generally centrally disposed relative to the side walls. The inner surfaces 1 d 1 of these spaced apart substantially parallel projections 1 d are sized to movably engage the planar sides 6 e of the slide member 6. The upper surfaces 1 d 2 of these spaced apart projections 1 d are designed to movably engage with planar surfaces 6 b of the slide member 6. The purpose of these spaced-apart plate-like projections 1 d is to guide the slide member 6 and the front portion of the blade member 5 back and forth along a generally linear path (see e.g., FIGS. 25-27). Additional plate-like projections 1 g extend perpendicularly from the projections 1 d. These projections 1 g have an upper surface which is arranged at the same height as the projections 1 d. As a result, the projections 1 g provide a support surface for the arms 3 b and 3 c and, together with projections 1 d and projections 2 c, provide surfaces which both supports the trigger cap 3 and helps guide the movement of the trigger cap 3 relative to the lancet body. As can be seen in FIGS. 4-6, the lower housing part 1 also includes a projection 1 b which is positioned adjacent the right side wall. The projection 1 b serves as an anchor for one end of the spring 4 (see e.g., FIG. 24). The projection 1 b extends up past the upper edge 1 h of the lower housing part by approximately 3 mm and substantially extends to the inner surface 2 d of the upper housing part 2, thereby preventing the inadvertent disengagement of the spring 4. The lower housing part 1 also includes a tubular projection 1 c whose central opening is sized to receive therein (with a small clearance) the circular projection 7 b of the connecting part 7. This movable connection allows the connecting member 7 to pivot or rotate about a center axis of the tubular projection 1 c (see e.g., FIGS. 24-27). The lower housing part 1 further includes a stop projection 1 j which is positioned to limit the counterclockwise movement of the connecting member 7 when the trigger cap 3 is moved from an initial position (see e.g., FIG. 24) to another position prior to causing the triggering of the lancet device (see e.g., FIG. 25). The lower housing part 1 also includes, by way of non-limiting example, four openings 1 k which are sized to frictionally engage and receive therein four similarly spaced projections 2 g of the upper housing part 2. The lower housing part 1 further also includes two spaced apart plate-like stop projections 1 f which extend above the surfaces 1 d 2. These projections 1 f are positioned to engage the ends of the arms 3 b and 3 c and act to limit the inward movement of the trigger cap 3 during the triggering of the lancet device LD. Finally, the lower housing part 1 has a stiffening support rib 1 m which supports the blade member 5 during its movement and also utilizes a peripheral shoulder 1 l which is sized and shaped to engage with the peripheral edge 2 f of the upper housing part 2.
As can be seen in FIGS. 28-30, the lancet body 20/10 can have a generally rectangular shape and can preferably also have an ergonomic shape to facilitate comfortable gripping/holding. Of course, the invention contemplates other shapes for the lancet body provided that they result in a relatively inexpensive design and/or which is economical to produce. As explained above, the front end of the lancet device LD includes a skin engaging surface SCS which is defined by outer surface of the trigger cap 30 (see FIGS. 54-58). A lancet blade opening BO′ extends through an end wall of the trigger cap 30 and serves to allow the tip of lancet blade member 50 to penetrate beyond the surface SCS (see e.g., FIG. 26). In this regard, the trigger cap 30 is movably mounted to the front end portion of the lancet body. In the instant embodiment, the trigger cap 30 is a generally rectangular-shaped cap member for reasons of aesthetic design. However, the invention contemplates a variety of shapes for the trigger cap 30 such as, e.g., oval, triangular, square, polygonal, etc. Moreover, in the instant embodiment, the trigger cap 30 is generally centrally mounted, relative to the sides of the lancet body. However, the invention contemplates other locations and/or positions for the trigger cap 30, provided such locations allow the lancet device to function properly. Other ways of associating the trigger cap 30 on the lancet body are expressly contemplated, such as, e.g., being integral with the housing and acting as a living hinge or spring. The trigger cap 30 is installed in an opening formed by partial openings 10 a and 20 a of the front cover 20 and rear cover 10 and is sized to slide within the opening 10 a/20 a in a smooth low-friction manner. As can be seen in FIGS. 54-58, the trigger cap 30 has shoulders 30 a which engage inner surfaces of the opening 10 a/20 a (see e.g., FIG. 24) whereby the trigger cap 30 is prevented from falling out of the lancet body once installed. The trigger cap 30 is also sized to be slide intro and/or be pushed into the lancet body (see e.g., FIGS. 25 and 26). However, this movement is resisted owing to the fact that the trigger cap 30 is biased towards an extended position (see e.g., FIG. 24) via a torsion spring 40 and also by virtue of engagement between the slide member 60 and the deflecting arms 30 b and 30 c. This biasing force and engagement can be overcome, however, when the trigger cap 30 is pushed into the lancet body sufficiently (see e.g., FIGS. 25 and 26) by applying a force to the surface SCS. Furthermore, because the trigger cap 30 includes an opening BO′, once triggered, the blade tip 50 a will be allowed to pass there-through (see e.g., FIG. 26) in order to penetrate a user's skin. Moreover, because the trigger cap 30 also includes the deflecting arms 30 b and 30 c and, due to the tapered surfaces 60 c and 60 d, the trigger cap 30 is prevented from moving back to a pre-triggered position by the slide member 60, the blade member 50, the connecting member 70, and the spring 40. Thus, once triggered, the lancet device LD is automatically rendered unusable again—thereby rendering the device a single-use device, a safe device because the blade member 50 is safely contained in the housing, and a device which can be disposed of safely.
a body comprising a rear end and a front end;
a triggering mechanism comprising a skin-engaging surface and a blade tip opening, the triggering mechanism being at least one of associated with the body and mounted to the body;
the triggering mechanism being movable into the body during triggering;
a biasing arrangement comprising a spring arranged inside the body and spaced from the triggering mechanism and that biases the blade member from the first retracted position towards the extended position and then towards the second retracted position; and
a guiding arrangement comprising a guide which guides the blade member while the blade member moves from the first retracted position towards the extended position and then towards the second retracted position,
wherein, during movement of the blade member, the guiding arrangement ensures that the blade member both moves along a curved path and slides in a linear direction which is substantially parallel to an axis extending from the blade tip opening to the rear end of the body.
2. The device of claim 1, wherein the biasing arrangement comprises at least one extension spring.
3. The device of claim 1, wherein the biasing arrangement comprises at least one torsion spring.
4. The device of claim 1, wherein the triggering mechanism is movably mounted to the front end of the body.
5. The device of claim 1, wherein the triggering mechanism comprises a cap portion which, at least in the first retracted position, extends out from the body, and at least one aim arranged within the body.
6. The device of claim 1, wherein the body comprises a first housing part connected to a second housing part.
7. The device of claim 1, wherein the blade member comprises a body portion made of one material and a blade tip portion made of a different material.
8. The device of claim 1, wherein the guiding arrangement comprises two projections coupled to the blade member, a pivotally mounted connecting member, and two substantially parallel guiding members coupled to the body.
9. The device of claim 1, wherein the guiding arrangement comprises two spaced apart guiding projections coupled to one housing part of the body and two spaced apart guiding projections coupled to another housing part of the body.
10. The device of claim 1, wherein the guiding arrangement comprises at least two generally circular projections, a movably mounted connecting member, and at least two spaced apart generally linear guide members.
11. The device of claim 1, wherein the guiding arrangement comprises first and second projections extending from one side of the blade member, a movably mounted connecting member having one end movably connected to the first projection and another end movably connected to a portion of the body, and a slide movably coupled to the second projection and movably guided by two spaced apart members coupled to the body.
12. The device of claim 1, wherein the guiding arrangement comprises a plurality of non-movable projections, a movably mounted connecting member, guiding members coupled to the body, and a movably guided slide.
13. The device of claim 1, wherein the triggering mechanism comprises two arms which deflect away from each other to cause automatic movement of the blade member from the first retracted position to the extended position and then to the second retracted position.
14. The device of claim 1, wherein the front end of the body comprises a generally rectangular-shaped opening which receives therein a generally rectangular-shaped portion of the triggering mechanism.
15. The device of claim 1, wherein the triggering mechanism comprises at least one arm which deflects to cause automatic movement of the blade member from the first retracted position to another more retracted position, then to the extended position, and then to the second retracted position.
16. The device of claim 1, wherein the body comprises a generally rectangular-shaped body having ergonomically-shaped finger gripping portions.
17. A disposable and single-use blade lancet device, comprising:
a movable cap comprising:
a portion extending into the body; and
a portion extending outside the body and having a skin engaging surface and a blade tip opening;
a blade member movably mounted within the body and comprising a blade tip and projections arranged on opposite sides of the blade member;
the blade member being movable at least between an initial retracted position, an extended position, and a final position that is different than the initial retracted position;
a spring arranged inside the body;
a movable guide arranged within the body, coupled to the blade member and having a projecting portion that extends into a space formed by two substantially parallel surfaces arranged within the body;
said guide being movable relative to the cap and the blade member,
wherein, during triggering caused by linear movement of the cap relative to the body, both the guide and the blade member move within the body.
18. The device of claim 17, wherein the blade member is a metal member covered or coated with a plastic material.
19. The device of claim 17, wherein the body comprises a generally rectangular-shaped body.
20. The device of claim 17, wherein the spring has an end in contact with the blade member.
21. The device of claim 17, wherein the spring has an end in contact with an inner surface of the body.
22. The device of claim 17, wherein the cap has two spaced-apart arms projecting from a rear end of the cap.
23. The device of claim 17, wherein the blade tip opening is a slot.
24. A disposable and single-use blade lancet device, comprising:
a removable cover preventing use of the device;
a blade member movably mounted within the body and comprising a blade tip; projections located on opposite sides of the blade member;
the blade member being movable at least between an initial position, a skin puncturing position, and a final position that is different than the initial position;
a spring arranged inside the body; and
a movable non-deflectable guide arranged within the body, in contact with the blade member and functioning to guide the movement of the blade member within the body; and
wherein, during triggering caused by liner movement of the cap relative to the body, the guide is guided by surfaces arranged in the body and the blade member has its movement guided by the guide.
25. The device of claim 24, wherein the blade member is a metal member covered or coated with a plastic material.
26. A disposable and single-use blade lancet device, comprising:
a rectangular-shaped body;
a blade member movably mounted within the body and comprising a blade tip;
projections positioned on opposite sides of the blade member;
in the initial position, the blade tip is arranged on one side of an imaginary center line of the body passing through the blade tip opening;
in the final position, the blade tip is arranged on an opposite side of the imaginary center line of the body passing through the blade tip opening;
a one-piece guide arranged within the body, in contact with the blade member and functioning to guide the movement of the blade member within the body; and
wherein, during triggering caused by linear movement of the cap relative to the body, the guide is guided by parallel surfaces arranged in the body.
27. The device of claim 26, wherein the blade member is a metal member covered or coated with a plastic material.
28. A disposable and single-use blade lancet device, comprising:
in the final position, the blade tip is arranged on an opposite side of the imaginary center line of the body passing through the blade tip opening; a spring arranged inside the body;
a one-piece non-deflectable guide arranged within the body and being movable relative to the body, the cap and the blade member.
US13892845 2005-11-03 2013-05-13 Disposable/single-use blade lancet device and method Active US8876846B2 (en)
US12719647 Continuation US8454642B2 (en) 2005-11-03 2010-03-08 Disposable/single-use blade lancet device and method
US20140005709A1 true US20140005709A1 (en) 2014-01-02
US8876846B2 true US8876846B2 (en) 2014-11-04
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