SINGLE-USE COMPRESSION LANCING DEVICE

• US 20180049687A1
• Filed: 02/19/2016
• Published: 02/22/2018
• Est. Priority Date: 02/24/2015
• Status: Active Grant

• Current Assignee: Facet Technologies LLC
• Original Assignee: Facet Technologies LLC
• Inventors: GARG, Amit
• Granted Patent: US 10,244,974 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 17/32093 for skin incisions
• CPC Class Codes: A61B 2017/3409 including needle or instrument drives
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150412 Pointed piercing elements, e.g. needles, lancets for piercing the skin blade-like piercing elements A61B5/150442
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/150725 removal procedure linked to further actions, e.g. cocking of the piercing device, which indicate that the piercing device is used or tempered
• CPC Class Codes: A61B 5/150748 Having means for aiding positioning of the piercing device at a location where the body is to be pierced means for aiding positioning of devices for bringing media into the body A61M5/427, locating blood vessels A61B5/489
• CPC Class Codes: A61B 5/150885 Preventing re-use
• CPC Class Codes: A61B 5/15111 Semi-automatically triggered, e.g. at the end of the cocking procedure, for instance by biasing the main drive spring or when reaching sufficient contact pressure, the piercing device is automatically triggered without any deliberate action by the user
• CPC Class Codes: A61B 5/15144 comprising driving means, e.g. a spring, for retracting the piercing unit into the housing

Abstract

A single-use compression lancing device includes a bottom housing, a top housing, and a lancet. The lancet is generally within the bottom and top housings. The top housing is configured for slidingly engaging the bottom housing such that manipulation of the top housing relative to the bottom housing causes a sharp tip portion of the lancet to protrude from an opening of the top housing. In one form, at least one arm extending from the lancet interengages a portion of the top housing such that the lancet is retracted within a portion of the bottom housing.

Claims

1. A single-use compression lancing device comprising:

a lower housing extending from a first end to a second end, the first end comprising an opening defining a cavity therein, the cavity comprising an internal surface and a first locking feature, the internal surface having at least one interengagement feature formed therein;

an upper housing extending from a first end to a second end, the first end comprising a lancet opening and the second end comprising a second opening defining a cavity therein, the lancet opening and the second opening being in communication with the cavity, wherein least a portion of the cavity defines an internal surface having an angled wall generally near the lancet opening; and

a lancet comprising a main body portion extending from a first end to a second end, the first end comprising a needle extending therefrom and the second end comprising a second locking feature for interengagement with the first lock feature, and wherein at least a portion of the main body comprises at least one flexible arm extending therefrom for sliding interengagement with the angled wall of the upper housing.

2. The single-use compression lancing device of claim 1, wherein the upper housing further comprises a guidance feature for guiding the lancet along a generally axial path, the guidance feature comprising at least one ridge defining a channel formed on an internal surface of the cavity.

3. The single-use compression lancing device of claim 2, wherein the lancet further comprises at least one guide rib for traversing along the channel of the guidance feature.

4. The single-use compression lancing device of claim 1, wherein the upper housing further comprises side surfaces generally near the second end thereof, and wherein at least one of the side surfaces comprises a cantilevered finger including a chamfered surface and an overhang.

5. The single-use compression lancing device of claim 4, wherein the cavity of the bottom housing is configured for slidingly receiving the first end of the upper housing, and wherein the chamfered surface and overhang are configured for interengagement with the at least one interengagement feature of the internal surface of the cavity.

6. The single-use compression lancing device of claim 5, wherein the top housing is configured to slidingly move within the bottom housing, and wherein the cantilevered finger is configured to removably engage the at least one interengagement feature of the internal surface of the bottom housing.

7. The single-use compression lancing device of claim 6, wherein the top housing is capable of moving relative to the bottom housing in a first direction, but permitted from moving relative to the bottom housing in a second direction, the second direction generally opposite the first direction.

8. A lancing device comprising a bottom housing, a top housing, and a lancet, the lancet configured for selective interengagement and guidance within the bottom and top housings, wherein the top housing is configured for slidingly engaging the bottom housing such that manipulation of the top housing relative to the bottom housing causes a sharp tip portion of the lancet to protrude from an opening of the top housing, and wherein at least one arm extending from the lancet interengages a portion of the top housing such that the lancet is retracted within a portion of the bottom housing.

9. The lancing device of claim 8, wherein the lancet generally comprises a main body portion extending from a first end to a second end, the first end having a lancet needle projecting therefrom, and the second end having a locking feature for interengagement with at least one elongate finger extending from an internal portion of the housing generally near a second end thereof.

10. The lancing device of claim 9, wherein manipulation of the top housing relative to the bottom housing causes the at least one resiliently flexible arm extending from the main body portion of the lancet to flex due to contacting an internal wall of the top housing.

11. The lancing device of claim 10, wherein the locking feature of the second end of the lancet slidingly engages at least one engagement surface of the at least one elongate finger, and wherein when the lancet is in a fully extended state, the at least one resiliently flexible arm is at least partially flexed, and wherein a force generally equal to the force required to at least partially flex the at least one flexible arm forces the locking feature beyond the at least one engagement surface of the at least one elongate finger.

12. The lancing device of claim 11, wherein the locking feature of the second end of the lancet comprises at least one chamfered engagement surface and at least one lip, and wherein the at least one elongate finger comprises at least one chamfered engagement surface and at least one lip.

13. The lancing device of claim 12, wherein the chamfered engagement surfaces and lips of the locking feature and elongate finger, respectively, are configured such that the locking feature of the lancet is capable of moving relative to the at least one elongate finger in a retraction direction, but prevented from moving in a generally opposite lancing direction, whereby the chamfered engagement surfaces slidably engage one another in the retraction direction, and whereby the lips thereof engage each other to prevent a majority of the movement of the lancet relative to the bottom housing in the lancing direction.

14. A lancing device comprising a bottom housing, a top housing, and a lancet, the lancet configured for selective interengagement and guidance within the bottom and top housings, wherein the top housing is configured for slidingly engaging the bottom housing such that manipulation of the top housing relative to the bottom housing causes a sharp tip portion of the lancet to protrude from an opening of the top housing, and wherein at least one arm extending from the lancet interengages a portion of the top housing such that the lancet is retracted within a portion of the bottom housing, and wherein the lancet generally comprises a main body portion extending from a first end to a second end, the first end having a lancet needle projecting therefrom, and the second end having a locking feature for interengagement with at least one elongate finger extending from an internal portion of the housing generally near a second end thereof.

15. The lancing device of claim 14, wherein manipulation of the top housing relative to the bottom housing causes the at least one resiliently flexible arm extending from the main body portion of the lancet to flex due to contacting an internal wall of the top housing.

16. The lancing device of claim 15, wherein the locking feature of the second end of the lancet slidingly engages at least one engagement surface of the at least one elongate finger, and wherein when the lancet is in a fully extended state, the at least one resiliently flexible arm is at least partially flexed, and wherein a force generally equal to the force required to at least partially flex the at least one flexible arm forces the locking feature beyond the at least one engagement surface of the at least one elongate finger.

17. The lancing device of claim 16, wherein the locking feature of the second end of the lancet comprises at least one chamfered engagement surface and at least one lip, and wherein the at least one elongate finger comprises at least one chamfered engagement surface and at least one lip.

18. The lancing device of claim 17, wherein the chamfered engagement surfaces and lips of the locking feature and elongate finger, respectively, are configured such that the locking feature of the lancet is capable of moving relative to the at least one elongate finger in a retraction direction, but prevented from moving in a generally opposite lancing direction, whereby the chamfered engagement surfaces slidably engage one another in the retraction direction, and whereby the lips thereof engage each other to prevent a majority of the movement of the lancet relative to the bottom housing in the lancing direction.