US20100198243A1 - Lancet depth adjustment assembly - Google Patents
Lancet depth adjustment assembly Download PDFInfo
- Publication number
- US20100198243A1 US20100198243A1 US12/661,412 US66141210A US2010198243A1 US 20100198243 A1 US20100198243 A1 US 20100198243A1 US 66141210 A US66141210 A US 66141210A US 2010198243 A1 US2010198243 A1 US 2010198243A1
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- US
- United States
- Prior art keywords
- piercing
- depth adjustment
- lancet
- adjustment element
- aperture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15186—Devices loaded with a single lancet, i.e. a single lancet with or without a casing is loaded into a reusable drive device and then discarded after use; drive devices reloadable for multiple use
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/150022—Source of blood for capillary blood or interstitial fluid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150175—Adjustment of penetration depth
- A61B5/150183—Depth adjustment mechanism using end caps mounted at the distal end of the sampling device, i.e. the end-caps are adjustably positioned relative to the piercing device housing for example by rotating or screwing
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150412—Pointed piercing elements, e.g. needles, lancets for piercing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150374—Details of piercing elements or protective means for preventing accidental injuries by such piercing elements
- A61B5/150381—Design of piercing elements
- A61B5/150503—Single-ended needles
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/151—Devices specially adapted for taking samples of capillary blood, e.g. by lancets, needles or blades
- A61B5/15101—Details
- A61B5/15103—Piercing procedure
- A61B5/15107—Piercing being assisted by a triggering mechanism
- A61B5/15113—Manually triggered, i.e. the triggering requires a deliberate action by the user such as pressing a drive button
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/03—Automatic limiting or abutting means, e.g. for safety
- A61B2090/033—Abutting means, stops, e.g. abutting on tissue or skin
Definitions
- Lancet devices are commonly utilized devices which allow patients and medical practitioners to “prick” a patient's skin in order to effectively obtain a blood sample for a variety of tests.
- these lancet devices involve the driving of a lancet tip into the patient's skin so as to result in bleeding by the patient, thereby allowing the sample to be gathered.
- these tests are often performed in a hospital or laboratory environment, because of the prevalence of many home testing kits, more and more, individual patients are turning to self testing, and as a result, independently utilize the lancet device so as to obtain their own blood sample.
- lancet devices available in the art typically range from single use, disposable lancets, to re-useable lancet devices wherein an individual lancet can be removed and replaced after each use.
- the field of art associated with lancet devices is quite crowded, with a variety of often complex and intricate structures being utilized to drive the piercing tip of the lancet into the flesh of a patent.
- the typical lancet device generally utilizes a disposable lancet, often of a standard dimension, contained in a housing for firing.
- lancet devices have been provided, some providing for re-use through internal or external cocking of the firing mechanism and providing an actuation button on a side thereof for triggering of the piercing action.
- most conventional lancet devices are constructed such that when fired the piercing tip of a particular lancet protrudes, at least temporarily, a defined amount from a piercing aperture of the housing.
- This amount or depth to which the piercing tip protrudes is traditionally a standard amount which is sufficiently effective to pierce the skin of most patients, thereby resulting in generation of the blood sample.
- the standard depth which the piercing tip protrudes may not be ideal.
- lancet devices typically are set to pierce a maximum depth which is acceptable to most individuals and may be necessary for some patients, such as those experiencing swelling, the formation of a callous, and/or who have normally thicker skin.
- some patients either at all times or at selective times depending upon their condition, are very sensitive and excessive penetration can lead to excessive bleeding and/or a substantially amount of pain.
- maximum depth is generally undesirable.
- lancet gauges are becoming increasingly available, with many companies turning to the manufacture of thinner gauge lancets which are necessarily longer.
- a thicker gauge lancet does not have to penetrate as far to produce a sufficient sample, while thinner gauge lancets must penetrate further to produce a sufficient sample.
- thinner gauge lancets must penetrate further to produce a sufficient sample.
- the increased penetration that results from the longer, thinner lancets tends to be more painful and may therefore be excessive for some patients.
- a depth adjustment assembly which is substantially accurate and easy to utilize, and which allows a patient to effectively vary a depth to which a piercing tip of the lancet would penetrate their skin.
- a depth should be adjustable either a single time, for patients that have a requirement for a varied and specific depth on a permanent basis, or on a variable basis for patients who require different depths at different times.
- a common device needs to be utilized by many different patients, such as in a household with multiple diabetics, merely by replacing the used lancet with a new, sterile lancet. (Of course, such multi-patient use of a lancet device is never recommended.)
- the present invention relates to a lancet depth adjustment assembly.
- the lancet depth adjustment assembly is structured to be used with a lancet device, preferably of the type that includes a lancet movably disposed within a housing and structured to at least temporarily move into a piercing orientation wherein a piercing tip of the lancet protrudes from a piercing aperture defined in the housing.
- the lancet device is preferably of the type that protrudes through the piercing tip a predetermined, uniform amount, each time it is used.
- the lancet depth adjustment assembly includes a depth adjustment element.
- the depth adjustment element is preferably movably secured in at least partially and/or temporarily overlying relation to the piercing aperture of the housing.
- the piercing aperture of the housing may be of a finite size, and/or may comprise a completely open end of the housing, with the depth adjustment element being disposed operatively thereover.
- the depth adjustment element further includes a piercing access.
- the piercing access includes one more openings and is structured to permit passage of the piercing tip of the lancet therethrough after it has passed through the piercing aperture of the housing.
- the depth adjustment element is structured and disposed to be at least temporarily and at least partially interposed between a body part, such as the finger, of a patient and the piercing aperture during use of the lancet device.
- the depth adjustment element is thereby structured to define a spacing between the patient's finger and the piercing aperture, and in turn define a depth to which the piercing tip can penetrate the finger.
- a larger spacing between the finger and the piercing aperture, as defined by the depth adjustment element reduces the depth to which the piercing tip ultimately penetrates the finger.
- variable spacing is preferably provided by a single adjustable depth adjustment element, as will be described, if desired, interchangeable, different sized depth adjustment elements may be provided so as to vary the spacing.
- the depth adjustment element includes a varying thickness.
- the varying thickness is provided so as to vary a spacing between an exterior surface of the depth adjustment element and the piercing aperture.
- the spacing between the finger, which engages the exterior surface of the depth adjustment element, and the piercing aperture is also varied in accordance with a thickness of the portion of the depth adjustment element that is disposed in overlying relation to the piercing aperture when the lancet device is utilized.
- FIG. 1 is a perspective illustration of an embodiment of the depth adjustment assembly of the present invention operatively disposed on a lancet device;
- FIG. 2 is an exploded view of a depth adjustment assembly of the present invention in association with a lancet device
- FIG. 3 is a perspective illustration of an embodiment of the depth adjustment element of the depth adjustment assembly of the present invention.
- FIG. 4 is a side view of the embodiment of the depth adjustment element of the depth adjustment assembly of the present invention shown in FIG. 3 ;
- FIG. 5 is a side view of another embodiment of the depth adjustment element of the depth adjustment assembly of the present invention.
- FIG. 6 is a perspective illustration of yet another embodiment of the depth adjustment element of the depth adjustment assembly of the present invention.
- FIG. 7 is a side view of a further embodiment of the depth adjustment element of the depth adjustment assembly of the present invention.
- the present invention is directed towards a lancet depth adjustment assembly, generally indicated as 10 .
- the depth adjustment assembly 10 is preferably structured for use in conjunction with a lancet device 50 that is normally used to fire a lancet into a patient's skin, such as at a patient's finger or earlobe, so as to allow a blood sample to be generated and collected.
- the lancet device 50 is of the type which includes a housing 52 that contains a lancet with a piercing tip 56 movably disposed therein.
- the lancet device 50 is also preferably configured such that the lancet is at least temporarily movable into a piercing orientation wherein the piercing tip 56 of a lancet protrudes through a piercing aperture 54 defined in the housing 52 .
- the piercing aperture 54 is generally small and sized to receive merely the piercing tip 56 of the lancet therethrough, however, it is also understood that alternatively the piercing aperture may be much larger, including a completely open end of the housing 52 .
- at least part of the structure of the depth adjustment assembly 10 can generally define and/or enclose the end of the housing 52 at the piercing aperture.
- the lancet depth adjustment assembly 10 of the present invention includes a depth adjustment element, 15 .
- the depth adjustment element 15 is structured to be positioned in at least partially overlying relation to the piercing aperture 54 of the housing 52 , as illustrated in FIG. 1 .
- the depth adjustment element 15 also preferably includes a piercing access 20 defined therein.
- the piercing access 20 which may be in the form of a series of openings or an elongated slot or gap or opening in the depth adjustment element 15 is preferably structured to permit passage of the piercing tip 56 of the lancet therethrough, generally after it has passed through the piercing aperture 54 of the housing 52 .
- the depth adjustment element 15 is structured and disposed to be at least temporarily and at least partially interposed between a body part of the patient, such as preferably the patient's finger, and the piercing aperture 54 .
- the spacing between the finger and the piercing aperture 54 is defined preferably as a result of a position of the body part of the patient, such as a finger or earlobe, that is permitted by the depth adjustment element 15 , and in one embodiment the exterior surface 22 thereof, relative to the piercing aperture 54 , and also in the illustrated embodiment, as a result of the thickness of the depth adjustment element 15 .
- a particular thickness of the depth adjustment element generally at the piercing aperture 54 will correspondingly space the finger from the piercing aperture 54 .
- a depth to which the piercing tip 56 penetrates the finger is also thereby varied and defined by the depth adjustment element 15 .
- the farther away the exterior surface 22 of the depth adjustment element 15 is disposed from the piercing aperture 54 either as a result of a relative positioning of the depth adjustment element 15 and/or a thickness thereof, the greater the spacing between the finger and the piercing aperture 54 , and the shorter the depth to which the piercing tip 56 penetrates the finger.
- the piercing tip 56 is generally configured to protrude a predefined, set amount from the piercing aperture 54 of most lancet devices 50 , such that varying a position of the finger relative to the lancet device 50 varies the depth to which the piercing tip 56 will penetrate.
- the depth adjustment element 15 ′′ may include a partially recessed surface and/or a variably sized gap to define the piercing access 20 , the dimension and/or configuration thereof defining how close to the piercing aperture 54 the body part to be pierced is able to be positioned.
- a wide recess or gap allows more of a patient's finger to be disposed within the piercing access 20 , thereby reducing the spacing and increasing the penetration depth.
- a tight gap or recess will only allow minimal amounts of the patient's finger to penetrate beyond the exterior surface of the depth adjustment element, thereby increasing the spacing and reducing the penetration depth. Adjustability of this embodiment can be achieved in a similar manner to that described subsequently with regard to the other embodiments.
- a single depth adjustment element is preferably movably secured to the housing 52 of the lancet device 50 .
- the depth adjustment element 15 is operatively disposed preferably in generally overlying adjustable relation to the piercing aperture 54 . For example, as best seen in FIG.
- one embodiment may include the utilization of a guide assembly 60 coupled, either integrally or separately with the housing 52 and structured to movably retain and position the depth adjustment element 15 .
- the guide assembly 60 includes a pair of upwardly depending members preferably having a pin defined therein. The pin preferably rides within one or more tracks 26 , defined in corresponding sides of the depth adjustment element 15 .
- the guide assembly 60 generally retains the depth adjustment element 15 properly positioned in overlying relation to the piercing aperture 54 , however, sliding movement through the tracks 26 permits for corresponding and desired adjustment of the orientation of the depth adjustment element 15 .
- a notched, toothed, or other segmented configuration could be provided so as to define set stopping points corresponding to different depths and/or in an embodiment with multiple piercing accesses 20 , in aligned relation with a desired piercing access 20 .
- the aforementioned movable and/or sliding positioning between the depth adjustment element 15 and the housing 52 is especially beneficial in the embodiment wherein the depth adjustment element 15 is structured with varying thickness and/or to have an orientation which variably positions the exterior surface 22 of the depth adjustment element 15 at variable distances from the place of the piercing aperture 54 .
- a uniformly dimensioned depth adjustment element 15 may be provided, with the one or more tracks 26 , being oriented so as to selectively space the depth adjustment element 15 from the piercing aperture 54 , thereby correspondingly spacing the exterior surface 22 and a finger disposed thereon.
- the depth adjustment element 15 preferably includes a gradual variance in thickness, such as a taper and/or wedge and/or stepped shaped configuration.
- a gradual variance in thickness such as a taper and/or wedge and/or stepped shaped configuration.
- sliding adjustment of the depth adjustment element 15 , 15 ′, 15 ′′ relative to the piercing aperture 54 effectively varies the position of the exterior surface 22 , 22 ′, 22 ′′ of the depth adjustment element 15 , 15 ′, 15 ′′ in turn varying a positioning and spacing of the finger relative to the piercing tip 56 at its piercing orientation.
- two or more, but preferably three different piercing locations are provided, on at each step 23 ′.
- each step 23 ′ can also vary in thickness.
- indicia 30 may be effectively positioned on the depth adjustment element 15 , 15 ′, 15 ′′ so as to effectively indicate the depth to which the piercing tip 56 would penetrate the finger in accordance with the portion of the depth adjustment element 15 , 15 ′, 15 ′′ which is overlying the piercing aperture 54 in a particular position and/or orientation.
- the exterior surface 22 is structured to generally confront and engage the finger, while the interior surface 24 of the depth adjustment element 15 generally confronts the piercing aperture 54 .
- a generally symmetrical rounded configuration could be provided for the depth adjustment element.
- the exterior surface 22 and the interior surface 24 may be configured such that a spacing therebetween and a relative curvature actually varies along a length of the depth adjustment element 15 .
- a generally continuous and uniform engagement between the interior surface 24 of the depth adjustment element 15 is maintained with the housing 52 , achieving a general uniformity and stability, while the position of the overlying portion of the exterior surface 22 varies to effectively determine the spacing of the finger disposed thereon.
- the exterior surface 22 is structured to generally confront an engage the finger, while the interior surface 24 of the depth adjustment element 15 generally confronts the piercing aperture 54 .
- a generally symmetrical rounded configuration could be provided for the depth adjustment element.
- the exterior surface 22 and the interior surface 24 may be configured such that a spacing therebetween and a relative curvature actually varies along a length of the depth adjustment element 15 .
- a generally continuous and uniform engagement between the interior surface 24 of the depth adjustment element 15 is maintained with the housing 52 , achieving a general uniformity and stability, while the position of the overlying portion of the exterior surface 22 varies to effectively determine the spacing of the finger disposed thereon.
Abstract
A lancet depth adjustment assembly structured to be used use with a lancet device of the type including a lancet disposed movably within a housing so as to pass into a piercing orientation wherein a piercing tip of the lancet protrudes from a piercing aperture defined in the housing. The lancet depth adjustment assembly includes a depth adjustment element movably secured in overlying relation to the piercing aperture of the housing and having a piercing access including one or more openings structured to permit passage of the piercing tip of the lancet therethrough. The depth adjustment element is structured to be interposed between a finger of a patient and the piercing aperture so as to define a spacing therebetween, and accordingly define a depth to which the piercing tip, which protrudes a defined amount from the housing, penetrates the body part. Furthermore, the depth adjustment element is constructed of a varying thickness so as to vary the spacing between the body part and the piercing aperture in accordance with a thickness of a portion of the depth adjustment element disposed in overlying relation to the piercing aperture at a time of operation of the lancet device.
Description
- The present is a continuation of U.S. patent application Ser. No. 11/121,312, filed May 3, 2005, which issued as U.S. Pat. No. 7,678,126 on Mar. 16, 2010, which is a continuation-in-part of U.S. patent application Ser. No. 09/995,411, filed Nov. 27, 2001, which issued as U.S. Pat. No. 6,887,253 on May 3, 2005, which is a continuation of U.S. patent application Ser. No. 09/477,950, filed Jan. 5, 2000, which issued as U.S. Pat. No. 6,322,575 on Nov. 27, 2001, the contents of which are hereby incorporated by reference.
- 1. Field of the Invention
- The present invention relates to a lancet depth adjustment assembly structured to be interposed between a body part to be pierced, such as a patient's finger or earlobe, and a piercing aperture of a lancet device housing, so as to effectively define and vary a depth to which a piercing tip of the lancet is able to penetrate the patient's body part disposed thereon. As such a patient can effectively select and define a sensitivity level that corresponds their particular needs and circumstance in a substantially easy to use manner which effectively maintains the finger properly positioned and is configured so as to be conveniently and cost effectively configured for utilization with a wide variety of existing lancet device designs.
- 2. Description of the Related Art
- Lancet devices are commonly utilized devices which allow patients and medical practitioners to “prick” a patient's skin in order to effectively obtain a blood sample for a variety of tests. Typically these lancet devices involve the driving of a lancet tip into the patient's skin so as to result in bleeding by the patient, thereby allowing the sample to be gathered. Moreover, although these tests are often performed in a hospital or laboratory environment, because of the prevalence of many home testing kits, more and more, individual patients are turning to self testing, and as a result, independently utilize the lancet device so as to obtain their own blood sample.
- Conventional lancet devices available in the art typically range from single use, disposable lancets, to re-useable lancet devices wherein an individual lancet can be removed and replaced after each use. Moreover, as a result of the increasing popularity of blood testing procedures, especially by individual patients, the field of art associated with lancet devices is quite crowded, with a variety of often complex and intricate structures being utilized to drive the piercing tip of the lancet into the flesh of a patent. In particular, the typical lancet device generally utilizes a disposable lancet, often of a standard dimension, contained in a housing for firing. As such, a variety of different, lancet devices have been provided, some providing for re-use through internal or external cocking of the firing mechanism and providing an actuation button on a side thereof for triggering of the piercing action.
- Typically, most conventional lancet devices are constructed such that when fired the piercing tip of a particular lancet protrudes, at least temporarily, a defined amount from a piercing aperture of the housing. This amount or depth to which the piercing tip protrudes is traditionally a standard amount which is sufficiently effective to pierce the skin of most patients, thereby resulting in generation of the blood sample. Unfortunately, with some types of lancets, some patients and/or depending upon the circumstance, the standard depth which the piercing tip protrudes may not be ideal. For example, lancet devices typically are set to pierce a maximum depth which is acceptable to most individuals and may be necessary for some patients, such as those experiencing swelling, the formation of a callous, and/or who have normally thicker skin. Conversely, however, some patients, either at all times or at selective times depending upon their condition, are very sensitive and excessive penetration can lead to excessive bleeding and/or a substantially amount of pain. As a result, in such patients a standard, maximum depth is generally undesirable. Furthermore, it is also recognized that a wide spectrum of different lancet gauges are becoming increasingly available, with many companies turning to the manufacture of thinner gauge lancets which are necessarily longer. For example, a thicker gauge lancet does not have to penetrate as far to produce a sufficient sample, while thinner gauge lancets must penetrate further to produce a sufficient sample. Unfortunately, however, the increased penetration that results from the longer, thinner lancets tends to be more painful and may therefore be excessive for some patients.
- Accordingly, it would be highly beneficial to provide a depth adjustment assembly which is substantially accurate and easy to utilize, and which allows a patient to effectively vary a depth to which a piercing tip of the lancet would penetrate their skin. Furthermore, such a depth should be adjustable either a single time, for patients that have a requirement for a varied and specific depth on a permanent basis, or on a variable basis for patients who require different depths at different times. Indeed, such a configuration would be particularly beneficial if a common device needs to be utilized by many different patients, such as in a household with multiple diabetics, merely by replacing the used lancet with a new, sterile lancet. (Of course, such multi-patient use of a lancet device is never recommended.)
- It would also be beneficial to provide such a depth adjustment assembly which is substantially effective and accurate, and is also cost effective and convenient to implement on a wide variety of existing lancet device configurations. For example, many individuals have particular preferences and/or needs with regard to the specific lancet devices that they utilize and/or have become accustomed to utilizing. As a result, it would be beneficial to provide a depth adjustment assembly which can be effectively configured for utilization with a majority of such lancet device designs, providing those designs with a beneficial degree adjustability, without affecting their normal mode of operation.
- The present invention relates to a lancet depth adjustment assembly. In particular, the lancet depth adjustment assembly is structured to be used with a lancet device, preferably of the type that includes a lancet movably disposed within a housing and structured to at least temporarily move into a piercing orientation wherein a piercing tip of the lancet protrudes from a piercing aperture defined in the housing. Moreover, the lancet device is preferably of the type that protrudes through the piercing tip a predetermined, uniform amount, each time it is used.
- Preferably, the lancet depth adjustment assembly includes a depth adjustment element. The depth adjustment element is preferably movably secured in at least partially and/or temporarily overlying relation to the piercing aperture of the housing. Of course, the piercing aperture of the housing may be of a finite size, and/or may comprise a completely open end of the housing, with the depth adjustment element being disposed operatively thereover.
- The depth adjustment element further includes a piercing access. In particular, the piercing access includes one more openings and is structured to permit passage of the piercing tip of the lancet therethrough after it has passed through the piercing aperture of the housing. As such, the depth adjustment element is structured and disposed to be at least temporarily and at least partially interposed between a body part, such as the finger, of a patient and the piercing aperture during use of the lancet device.
- The depth adjustment element is thereby structured to define a spacing between the patient's finger and the piercing aperture, and in turn define a depth to which the piercing tip can penetrate the finger. For example, as the piercing tip is generally configured to pass a predefined distance through the piercing aperture of the housing, a larger spacing between the finger and the piercing aperture, as defined by the depth adjustment element, reduces the depth to which the piercing tip ultimately penetrates the finger.
- Although variable spacing is preferably provided by a single adjustable depth adjustment element, as will be described, if desired, interchangeable, different sized depth adjustment elements may be provided so as to vary the spacing. Preferably the depth adjustment element includes a varying thickness. In particular, the varying thickness is provided so as to vary a spacing between an exterior surface of the depth adjustment element and the piercing aperture. As a result, the spacing between the finger, which engages the exterior surface of the depth adjustment element, and the piercing aperture is also varied in accordance with a thickness of the portion of the depth adjustment element that is disposed in overlying relation to the piercing aperture when the lancet device is utilized.
- These and other objects, features and advantages of the present invention will become clearer when the drawings as well as the detailed description are taken into consideration.
- For a fuller understanding of the nature of the present invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
-
FIG. 1 is a perspective illustration of an embodiment of the depth adjustment assembly of the present invention operatively disposed on a lancet device; -
FIG. 2 is an exploded view of a depth adjustment assembly of the present invention in association with a lancet device; -
FIG. 3 is a perspective illustration of an embodiment of the depth adjustment element of the depth adjustment assembly of the present invention; -
FIG. 4 is a side view of the embodiment of the depth adjustment element of the depth adjustment assembly of the present invention shown inFIG. 3 ; -
FIG. 5 is a side view of another embodiment of the depth adjustment element of the depth adjustment assembly of the present invention; -
FIG. 6 is a perspective illustration of yet another embodiment of the depth adjustment element of the depth adjustment assembly of the present invention; and -
FIG. 7 is a side view of a further embodiment of the depth adjustment element of the depth adjustment assembly of the present invention; - Like reference numerals refer to like parts throughout the several views of the drawings.
- Shown throughout the Figures, the present invention is directed towards a lancet depth adjustment assembly, generally indicated as 10. The
depth adjustment assembly 10 is preferably structured for use in conjunction with alancet device 50 that is normally used to fire a lancet into a patient's skin, such as at a patient's finger or earlobe, so as to allow a blood sample to be generated and collected. (Although the present invention can be used when piercing any portion of a patient's body, for purposes of clarity only, the following description is made primarily with reference to the piercing of a finger.) Although, there are a variety of different types and configurations oflancet devices 50 which may be utilized with the lancetdepth adjustment assembly 10 of the present invention, preferably thelancet device 50 is of the type which includes ahousing 52 that contains a lancet with a piercingtip 56 movably disposed therein. Moreover, thelancet device 50 is also preferably configured such that the lancet is at least temporarily movable into a piercing orientation wherein the piercingtip 56 of a lancet protrudes through a piercingaperture 54 defined in thehousing 52. Of course, the piercingaperture 54 is generally small and sized to receive merely the piercingtip 56 of the lancet therethrough, however, it is also understood that alternatively the piercing aperture may be much larger, including a completely open end of thehousing 52. In such an alternate embodiment, at least part of the structure of thedepth adjustment assembly 10, to be described, can generally define and/or enclose the end of thehousing 52 at the piercing aperture. - Looking specifically to the lancet
depth adjustment assembly 10 of the present invention, it includes a depth adjustment element, 15. Thedepth adjustment element 15 is structured to be positioned in at least partially overlying relation to the piercingaperture 54 of thehousing 52, as illustrated inFIG. 1 . Along these lines, thedepth adjustment element 15 also preferably includes a piercingaccess 20 defined therein. The piercingaccess 20 which may be in the form of a series of openings or an elongated slot or gap or opening in thedepth adjustment element 15 is preferably structured to permit passage of the piercingtip 56 of the lancet therethrough, generally after it has passed through the piercingaperture 54 of thehousing 52. As such, thedepth adjustment element 15 is structured and disposed to be at least temporarily and at least partially interposed between a body part of the patient, such as preferably the patient's finger, and the piercingaperture 54. Accordingly, the spacing between the finger and the piercingaperture 54 is defined preferably as a result of a position of the body part of the patient, such as a finger or earlobe, that is permitted by thedepth adjustment element 15, and in one embodiment theexterior surface 22 thereof, relative to the piercingaperture 54, and also in the illustrated embodiment, as a result of the thickness of thedepth adjustment element 15. For example, in the illustrated embodiments a particular thickness of the depth adjustment element generally at the piercingaperture 54 will correspondingly space the finger from the piercingaperture 54. As a result, a depth to which the piercingtip 56 penetrates the finger is also thereby varied and defined by thedepth adjustment element 15. Also from the preceding it follows that the farther away theexterior surface 22 of thedepth adjustment element 15 is disposed from the piercingaperture 54, either as a result of a relative positioning of thedepth adjustment element 15 and/or a thickness thereof, the greater the spacing between the finger and the piercingaperture 54, and the shorter the depth to which the piercingtip 56 penetrates the finger. As can be appreciated, the piercingtip 56 is generally configured to protrude a predefined, set amount from the piercingaperture 54 ofmost lancet devices 50, such that varying a position of the finger relative to thelancet device 50 varies the depth to which the piercingtip 56 will penetrate. In yet another embodiment, as illustrated inFIG. 6 , thedepth adjustment element 15″ may include a partially recessed surface and/or a variably sized gap to define the piercingaccess 20, the dimension and/or configuration thereof defining how close to the piercingaperture 54 the body part to be pierced is able to be positioned. For example, a wide recess or gap allows more of a patient's finger to be disposed within the piercingaccess 20, thereby reducing the spacing and increasing the penetration depth. Conversely, a tight gap or recess will only allow minimal amounts of the patient's finger to penetrate beyond the exterior surface of the depth adjustment element, thereby increasing the spacing and reducing the penetration depth. Adjustability of this embodiment can be achieved in a similar manner to that described subsequently with regard to the other embodiments. - Although a plurality of
depth adjustment elements 15 may be utilized, each of the depth adjustment elements being removable and having a different structure and/or dimension so as to effectively vary a spacing of the finger from the piercingaperture 54, in the illustrated embodiment, a single depth adjustment element is preferably movably secured to thehousing 52 of thelancet device 50. Thedepth adjustment element 15 is operatively disposed preferably in generally overlying adjustable relation to the piercingaperture 54. For example, as best seen inFIG. 2 , although a variety of interlocking structures could be utilized which allow for a generally sliding movement between thedepth adjustment element 15 and thehousing 52, one embodiment may include the utilization of aguide assembly 60 coupled, either integrally or separately with thehousing 52 and structured to movably retain and position thedepth adjustment element 15. In the illustrated embodiment theguide assembly 60 includes a pair of upwardly depending members preferably having a pin defined therein. The pin preferably rides within one ormore tracks 26, defined in corresponding sides of thedepth adjustment element 15. As a result, theguide assembly 60 generally retains thedepth adjustment element 15 properly positioned in overlying relation to the piercingaperture 54, however, sliding movement through thetracks 26 permits for corresponding and desired adjustment of the orientation of thedepth adjustment element 15. Of course, alternate, more integral and/or captivated configurations wherein sliding movement is still maintained could also be provided. Likewise, a notched, toothed, or other segmented configuration could be provided so as to define set stopping points corresponding to different depths and/or in an embodiment with multiple piercing accesses 20, in aligned relation with a desired piercingaccess 20. - The aforementioned movable and/or sliding positioning between the
depth adjustment element 15 and thehousing 52 is especially beneficial in the embodiment wherein thedepth adjustment element 15 is structured with varying thickness and/or to have an orientation which variably positions theexterior surface 22 of thedepth adjustment element 15 at variable distances from the place of the piercingaperture 54. For example, although not illustrated for clarity, a uniformly dimensioneddepth adjustment element 15 may be provided, with the one ormore tracks 26, being oriented so as to selectively space thedepth adjustment element 15 from the piercingaperture 54, thereby correspondingly spacing theexterior surface 22 and a finger disposed thereon. In the illustrated embodiment, however, thedepth adjustment element 15 preferably includes a gradual variance in thickness, such as a taper and/or wedge and/or stepped shaped configuration. As a result, sliding adjustment of thedepth adjustment element aperture 54 effectively varies the position of theexterior surface depth adjustment element tip 56 at its piercing orientation. As seen in the embodiment ofFIG. 7 , two or more, but preferably three different piercing locations are provided, on at eachstep 23′. Of course, eachstep 23′ can also vary in thickness. Furthermore, if desired,indicia 30 may be effectively positioned on thedepth adjustment element tip 56 would penetrate the finger in accordance with the portion of thedepth adjustment element aperture 54 in a particular position and/or orientation. - As can be appreciated, the
exterior surface 22 is structured to generally confront and engage the finger, while theinterior surface 24 of thedepth adjustment element 15 generally confronts the piercingaperture 54. As such, if desired, a generally symmetrical rounded configuration could be provided for the depth adjustment element. Alternatively, as illustrated, theexterior surface 22 and theinterior surface 24 may be configured such that a spacing therebetween and a relative curvature actually varies along a length of thedepth adjustment element 15. As a result, a generally continuous and uniform engagement between theinterior surface 24 of thedepth adjustment element 15 is maintained with thehousing 52, achieving a general uniformity and stability, while the position of the overlying portion of theexterior surface 22 varies to effectively determine the spacing of the finger disposed thereon. - As can be appreciated, the
exterior surface 22 is structured to generally confront an engage the finger, while theinterior surface 24 of thedepth adjustment element 15 generally confronts the piercingaperture 54. As such, if desired, a generally symmetrical rounded configuration could be provided for the depth adjustment element. Alternatively, as illustrated, theexterior surface 22 and theinterior surface 24 may be configured such that a spacing therebetween and a relative curvature actually varies along a length of thedepth adjustment element 15. As a result, a generally continuous and uniform engagement between theinterior surface 24 of thedepth adjustment element 15 is maintained with thehousing 52, achieving a general uniformity and stability, while the position of the overlying portion of theexterior surface 22 varies to effectively determine the spacing of the finger disposed thereon. - Since many modifications, variations and changes in detail can be made to the described preferred embodiment of the invention, it is intended that all matters in the foregoing description and shown in the accompanying drawings be interpreted as illustrative and not in a limiting sense. Thus, the scope of the invention should be determined by the appended claims and their legal equivalents.
- Now that the invention has been described,
Claims (2)
1. For use in combination with a lancet device including a lancet disposed within a housing and structured to move into a piercing orientation wherein a piercing tip of the lancet protrudes from a piercing aperture defined in the housing, a lancet depth adjustment assembly comprising:
a depth adjustment element, said depth adjustment element secured in at least partially overlying relation to the piercing aperture of the housing;
said depth adjustment element including a piercing access structured to permit passage of the piercing tip of the lancet therethrough;
said depth adjustment element structured to define a spacing between the finger and the piercing aperture, and accordingly a depth to which the piercing tip penetrates the finger;
said depth adjustment element having an exterior surface disposed in at least partially overlying relation to the piercing aperture of the housing,
said exterior surface defining a plurality of different spacings from the piercing aperture as a result of a portion of said exterior surface that is disposed in said overlying relation to the piercing opening, and structured to maintain the finger at a corresponding one of said different spacings from the piercing aperture, and
said piercing access defining an opening at least two of said different spacings so as to permit the passage of the piercing tip therethrough when said depth adjustment element is disposed in overlying relation to the piercing aperture in at least two distinct piercing locations.
2. A lancet device comprising:
a lancet, said lancet having a piercing tip;
a housing;
said lancet movable into a piercing orientation wherein said piercing tip protrudes from a piercing aperture a predetermined uniform amount;
a depth adjustment element having an exterior surface positioned in at least partially overlying relation to the piercing aperture of the housing,
said exterior surface comprising a plurality of steps,
each of said plurality of steps defining a different spacing from said exterior surface to the piercing aperture, and accordingly a varying depth to which the piercing tip penetrates a finger disposed on said exterior surface;
a position of said plurality of steps is collectively adjustable relative to the piercing aperture; and
a guide structured to movably retain and position said depth adjustment element in overlying relation to the piercing aperture.
Priority Applications (1)
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US12/661,412 US20100198243A1 (en) | 2000-01-05 | 2010-03-16 | Lancet depth adjustment assembly |
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US11/121,312 US7678126B2 (en) | 2000-01-05 | 2005-05-03 | Lancet depth adjustment assembly |
US12/661,412 US20100198243A1 (en) | 2000-01-05 | 2010-03-16 | Lancet depth adjustment assembly |
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US11/121,312 Expired - Fee Related US7678126B2 (en) | 2000-01-05 | 2005-05-03 | Lancet depth adjustment assembly |
US12/661,412 Abandoned US20100198243A1 (en) | 2000-01-05 | 2010-03-16 | Lancet depth adjustment assembly |
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US11/121,312 Expired - Fee Related US7678126B2 (en) | 2000-01-05 | 2005-05-03 | Lancet depth adjustment assembly |
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US8814896B2 (en) | 1999-11-02 | 2014-08-26 | Stat Medical Devices, Inc. | Single use lancet assembly |
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US8715309B2 (en) | 2002-04-29 | 2014-05-06 | Steven Schraga | Lancet device |
US8864783B2 (en) | 2005-08-04 | 2014-10-21 | Bayer Healthcare Llc | Lancing device |
US9375175B2 (en) | 2005-08-04 | 2016-06-28 | Ascensia Diabetes Care Holdings Ag | Lancing device |
USD806246S1 (en) | 2016-02-25 | 2017-12-26 | Steven Schraga | Lancet cover |
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Also Published As
Publication number | Publication date |
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US20050245955A1 (en) | 2005-11-03 |
US7678126B2 (en) | 2010-03-16 |
US6322575B1 (en) | 2001-11-27 |
US20020082633A1 (en) | 2002-06-27 |
US6887253B2 (en) | 2005-05-03 |
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