Source: https://patents.google.com/patent/ES2334128T3/en
Timestamp: 2020-01-25 18:10:13
Document Index: 130872998

Matched Legal Cases: ['application No 60', 'art 34', 'art 34', 'art 34', 'art 82', 'art 82', 'art 82', 'art 86', 'art 82', 'art 86', 'art 86', 'art 86', 'art 88', 'art 88', 'art 88', 'art 126', 'art 126', 'art 88', 'art 88']

ES2334128T3 - Blood collection suspension system. - Google Patents
Blood collection suspension system. Download PDF
ES2334128T3
ES2334128T3 ES03814826T ES03814826T ES2334128T3 ES 2334128 T3 ES2334128 T3 ES 2334128T3 ES 03814826 T ES03814826 T ES 03814826T ES 03814826 T ES03814826 T ES 03814826T ES 2334128 T3 ES2334128 T3 ES 2334128T3
ES03814826T
2002-12-30 Priority to US436952P priority
2010-03-05 Publication of ES2334128T3 publication Critical patent/ES2334128T3/en
A device for sampling a body fluid, which comprises: an integrated incision-sampling device that includes a test strip for the analysis of a body fluid, and a receptacle (44) and a lancet for making an incision in the skin, which lancet is slidably received in the receptacle, wherein the receptacle defines a sampling cavity for the removal of body fluid from the incision on the test strip, by capillary action; characterized in that, the device further comprises means (78) for compressing the receptacle against the skin and sliding the lancet into the receptacle relatively to the receptacle so that it leaves the receptacle thereby producing an incision in the skin, and means (50) for retraction and new application against the skin to promote body fluid to flow from the incision.
Blood collection suspension system.
This application claims the benefits of U.S. provisional application No 60 / 436,952, registered on 30 December 2002 (Attorney Docket No. 7404-446), which is incorporated herein in its entirety as reference.
The present invention generally relates to sampling devices of a body fluid, and more specifically, but not exclusively, it refers to a integrated sampling device of a body fluid, which adapts to temporarily withdraw and reapply the strip of trial at the site of the incision.
Analysis of a fluid in general
The collection and analysis of body fluids, is useful for many purposes, and continues to grow in importance to use in diagnosis and medical treatment, and in various other applications. In the medical field, it is desirable for non-expert operators to perform routine analysis, quickly and reproducibly outside the framework of a laboratory, with fast results and reading of analysis information resulting. The analysis can be carried out on several fluids bodily, and for certain applications it is particularly related to the analysis of blood and / or interstitial fluid. Such fluids can be analyzed to determine a variety of fluid characteristics, or analytes contained in the fluid, in order to identify a medical condition, determine therapeutic responses, dictate the progress of treatment, and Similar.
Steps of a general analysis
The analysis of body fluids implies basically the steps of obtaining the fluid sample, transfer of the sample to an analysis device, analysis of the fluid sample, and presentation of results on screen. These steps are usually performed through a plurality of instruments or devices separated.
Collection - Vascular
A method for collecting a sample of a fluid involves the insertion of a hollow needle or syringe into a vein or artery in order to remove a blood sample. Without However, said direct sampling of vascular blood may have several limitations, including pain, infection, and hematoma and other bleeding complications. In addition the sampling of direct vascular blood, is not suitable to be repeated Routinely, it can be extremely difficult, and it is not advisable for patients to do it themselves.
Collection - Incision
Another usual technique for collecting a body fluid sample is to make an incision in the skin to bring the fluid to the surface of the skin. A lancet, blade or other cutting instrument to practice the skin incision. The resulting blood or fluid sample Interstitial is then collected in a small tube or other container, or placed directly in contact with a strip of test. Frequently the fingertip is used as the source of a fluid due to its high vascularization and therefore produces a Good amount of blood. However the fingertip also has a large concentration of nerve endings, and the incision of The fingertip can therefore be painful. Sites alternatives for sampling, such as for example the palm of the hand, forearm, earlobe, and the like, may be useful for sampling, and they are less painful. However they produce less amount of blood These alternative places are therefore generally suitable for use only in systems of assay that require relatively small amounts of fluid, or when measures are taken to facilitate fluid expression body from the site of the incision.
Several methods and systems for skin incision are already known in the art. Examples of devices for skin incision are described, for example, in US Pat. Nos. Re 35,803, published by Lange et al ., On May 19, 1998; 4,924,879, published by O'Brien on May 15, 1990; 5,879,311, published by Duchon et al ., On February 16, 1999; 5,857,983, published by Douglas on January 12, 1999; 6,183,489, published by Douglas et al ., On February 6, 2001; 6,332,871, published by Douglas et al ., On December 25, 2001; and 5,964,718, published by Duchon et al ., on October 12, 1999. A commercially representative device for making incisions is the AccuChek Softclix lancet.
Patients are often recommended to accumulate fluid at the site of the incision, such as by applying pressure to the area surrounding the incision to aspirate or pump the fluid from the incision. Mechanical devices for facilitating the expression of a body fluid from an incision are also known. Such devices are described, for example, in United States Patents Nos. 5,879,311 published by Duchon et al ., On February 16, 1999; 5,857,983, published by Douglas on January 12, 1999; 6,183,489, published by Douglas et al ., On February 6, 2001; 5,951,492, published by Douglas et al ., On September 14, 1999; 5,951,493 published by Douglas et al ., On September 14, 1999; 5,964,718, published by Duchon et al ., On October 12, 1999; and 6,086,545, published by Roe et al ., on July 11, 2000. A commercially representative product that promotes the expression of body fluid from an incision is the Amira AtLast blood glucose system.
The collection produced of the body fluid, from here called "sampling" of the fluid, can take various forms. When the fluid sample comes to the surface of the skin in the incision, a sampling device is placed in contact with the fluid. These devices may include, for example, systems in which a test tube or strip is placed either adjacent to the site of the incision before the incision is formed, or moved to the site of the incision shortly after You have formed the incision. A sample tube can extract the fluid by suction or by capillary action. Such sampling systems may include, for example, the systems described in US Patent Nos. 6,048,352, published by Douglas et al ., On April 11, 2000; 6,099,484, published by Douglas et al ., On August 8, 2000; and 6,332,871, published by Douglas et al ., on December 25, 2001. Examples of commercial sampling devices include, for example, the Roche Compact, Amira AtLast, Glucometer Elite and Therasense Freestyle test strips.
The body fluid sample can be analyzed to determine various properties or components, as is well known in the art. For example, such analysis can be directed to hematocrit, blood glucose, coagulation, lead, iron, etc. The test systems include different means, such as optical means (for example, reflectance, absorption, fluorescence, Raman, etc.), electrochemical and magnetic means for analyzing the sample fluid. Examples of such analysis systems include those of US Patent Nos. 5,824,491, published by Priest et al ., On October 20, 1998; 5,962,215, published by Douglas et al ., On October 5, 1999; and 5,776,719, published by Douglas et al ., on July 7, 1998.
Typically, an analysis system uses a reaction that takes place between body fluid that you have to analyze and a reagent present in the analysis system. By For example, an optical analysis strip will generally be based on a color change, i.e. a change in wavelength absorbed or reflected by the dye formed by the system reagent used. See, for example, US Patent Nos. 3,802,842; 4,061,468; and 4,490,465.
US 2002/0082522 A1 describes a incision device and blood sampling with a ring stimulating. US 5951492 and US 6183489, describe Blood sampling and analysis devices. Sayings devices describe a lancet, a capillary channel for the blood withdrawal, and a stimulator cuff.
A usual medical analysis is the measure of blood glucose level The glucose level can be determined directly by a blood test, or indirectly through an analysis of other fluids such as fluid interstitial Diabetics are generally instructed to measure your blood glucose level several times a day, depending on of the nature and severity of your diabetes. Based on the model observed in the measured glucose levels, the patient and the doctor determine the appropriate level of insulin to be administer, also taking into account issues such as diet, Exercise and other factors.
When the presence of an analyte is analyzed such as glucose in a body fluid, are used usually analysis systems that take advantage of a oxidation / reduction reaction that takes place using a Oxidase / peroxide detection chemistry. The test reagent is exposed in a sample of body fluid during a period of adequate time, and a color change occurs when the analyte (glucose) is present. Typically, the intensity of this change It is proportional to the concentration of the analyte in the sample. He Reagent color is compared below with a standard known, which allows the determination of the amount of analyte present in the sample. This determination can be made by example, by a visual check or by a instrument, such as a reflectance spectrophotometer at a selected wavelength or a glucose meter in blood. The electrochemical system and other systems are also good known for the analysis of body fluids to determine the properties of the constituents.
Performing the steps described further above, it can be difficult for patients, especially for patients with limited hand dexterity, such as the elderly. Typical incision devices require that the user, manually cocking the lancet. As you can see, manual device cocking can be difficult for those who have manual dexterity problems. In a typical procedure, after cocking the mechanism of shot, patients shoot the lancet to the skin in order to form an incision in the skin. Once an amount has been collected enough fluid, like a droplet from the incision of the skin, the patient has to place a test strip on the place of the incision so that the test strip enters contact and absorb a sufficient amount of fluid to be analyze. Usually, these fluid droplets are very small, and patients, especially those who have poor control hand motor, may experience great difficulty in position the test strip so that it collects a sample suitable of an individual droplet. As you can imagine, a patient can be quickly frustrated by this procedure and, consequently, you may perform the test less often or You can even abandon the analysis completely. In addition, the pressure applied against the skin by the test strip during sampling may cause the incision to close, cutting prematurely with it the contribution of fluid. If the fluid supply from the incision is cut too soon, a insufficient amount of fluid on the test strip for the analysis.
Thus, the need for discover new contributions in this area of technology.
One aspect of the present invention relates to a device for sampling a body fluid that withdraws temporarily means for collecting fluid from the skin, of form that causes the formation of fluid from a skin incision.
Another aspect of the present invention relates to to a method for sampling a body fluid. The method includes the formation of a skin incision with a device Integrated lancet / sampling. The device is removed temporarily from the skin to promote fluid formation to from the incision. The device is reapplied to then in the vicinity of the fluid or in contact with the skin in order to collect the fluid.
Still another aspect of the present invention is refers to a sampling device of a body fluid, capable automatically cocking a firing mechanism before make the skin incision.
Other shapes, objects, features, aspects, benefits, advantages, and versions of this invention, will be apparent from a detailed description and accompanying drawings
Figure 1 is a perspective view of a sampling device of a body fluid according to a version of the present invention.
Figure 2 is a perspective view enlarged from the device of figure 1.
Figure 3 is a cross-sectional view. of the device of figure 1, making an incision in the skin.
Figure 4 is a cross-sectional view. of the device of Figure 1, temporarily removed from the skin.
Figure 5 is a sectional view. cross section of the device of figure 1, configured for fluid collection from the incision.
Description of the selected versions
In order to facilitate the understanding of principles of the invention, it should be noted that it will be used in the versions illustrated in the drawings, a specific language for The description of them. It should be understood however, that no No limitation of the scope of the invention is intended, such as alterations and subsequent modifications of the device illustrated, and that such additional applications of the principles of the invention as illustrated herein, are regarded as happening normally to skilled people in the art, to which the invention relates.
The present invention generally relates to a integrated skin incision device, which reduces the number of steps involved in training, collection, and analysis of A sample of body fluid from an incision. Plus specifically, the device is operable to cocking automatically the incision mechanism, and the device is also operable to lift the device from the contact with the skin and put the device back on the place of the incision in order to collect a sample of fluid. After temporarily lift the device from the skin, I don't know apply any pressure on the skin with the device, which could potentially close the incision and limit the influx of Sample fluid. A version of the device includes an engine electric automatically cocking the lancet mechanism and temporarily lifts the fluid collection medium from the skin. It is contemplated that, in another version, a system can be used purely mechanical to temporarily lift the collection medium of the fluid.
Next, a device is described integrated for sampling a body fluid 30, in accordance with a version among others, of the present invention, with reference to Figures 1-2. As indicated in Figure 1, the device 30 includes one end for sampling 32 and one end of action 34. The part for sampling 32 includes a integrated lancet / sampling device 36, a support 38 for the device 36, and a depth control mechanism 40. The device 36 is configured to make an incision in the skin, collect a sample of body fluid from the incision, and analyze the fluid sample. In device 36, a lancet or a cutting blade 42 for incision formation, it is housed in a receptacle 44. For purposes of illustration, to that lancet 42 can be seen in figure 1, lancet 42 is Displays in an extended position. Normally, when lancet 42 the skin is not piercing, lancet 42 is retracted inside of the receptacle 44. During the incision, the receptacle 44 is pressed against the skin to form a reference surface upon which the depth of penetration of the lancet 42. When device 36 is pressed against the skin, the receptacle 44 slides relatively towards lancet 42 of form that lancet 42 comes out, thereby making the incision inside of the skin. The device 36 further includes a test strip or a means 46 for analyzing the fluid sample. Test strip 46 can analyze the fluid by means such as, for example, means optical (for example, reflectance, absorption, fluorescence, RAMAN, etc.), electrochemical means, and / or magnetic analysis, by Name a few. In one version, the test strip analyzes optically the fluid by a chemical reagent. It forms a capillary channel between receptacle 44 and lancet 42, which conducts the fluid by capillary route on the test strip 46. As mentioned above, support 32 holds the device 36 during the lancet incision. The control mechanism of depth 40 is used to control and change the depth of penetration of lancet 42 into the skin. For an additional description of these components at the end of sampling 32 as well as its function, we refer to the serial number of the U.S. patent application of shared ownership, 10 / 330,724, titled "Precision depth control of the tip of the lancet ", registered on December 27, 2002 (number of Attorney's reference: 7404-413) which is incorporates this in its entirety, as a reference. How I know appreciate in the description below, the device Sampling of body fluid 30, in accordance with this invention, can be modified to be used in conjunction with other types of lancet and / or sampling devices.
Figure 2 illustrates an enlarged view of the actuation part 34 of sampling device 30. So that the actuation part 34, can be easily visualized, the Figures 1 and 2 show the device 30, without the housing. Without However, it should be noted that device 30 may include a housing in order to protect the components of the device 30 from the outside environment. As shown, the acting part 34, includes a support structure 48 that supports such a motor 50 as well as a trigger mechanism 52. The trigger mechanism 52 Used to fire the integrated lancet / sampling device 36, in order to produce an incision in the skin, and the engine 50 it is used to cocking the firing movement 52 as well as also retract the device 36 after the incision. The support structure 48 of the illustrated version, has a first 54 and a second 56 support arms, which are connected to each other through an action guide member 58 so that the support structure 48 has a "C" shape. The guide member opposite 58, the first 54 and the second 56 support arms respectively, they have a first 60 and a second 62 mounts of the engine, in which the engine 50 is mounted. The motor illustrated 50 generally has a cylindrical shape, but it contemplates the possibility that the engine 50 may have other shapes. As illustrated, motor mounts 60 and 62 have each one, a hollow cylindrical shape so that they match the shape cylindrical of the engine 50 so that the engine 50 is capable of fit inside the mounts 60 and 62. However, there are It should be noted that motor mounts 60 and 62 may have a differently so that they match the shape of engines different way.
In the illustrated version, the engine 50 includes a reversible electric motor, but it should be noted that the engine 50 may include other types of engines such as a Pneumatic motor. In addition, in another version in which the engine 50 does not is reversible, device 30 may include a transmission configured to reverse the force developed by the engine 50. In one version, the engine 50 is propelled by a source of internal power, such as a battery or a fuel cell, but the possibility that the engine 50 can be propelled in other ways, such as externally through an electrical connection As shown in Figures 1 and 2, the engine 50 has a propeller shaft with a propeller 64 that is extends through the first support arm 54. A reducing equipment 66, which is rotationally mounted to the first support arm 54, is coupled with the propeller equipment 64 of the engine 50. The mechanism trigger 52 includes a guide bar 68 that extends between the first 54 and second 56 support arms along the axis longitudinal L of the device 30. As shown, the guide bar 68 is rotatably mounted between the first 24 and the second 56 support arms by means of the first 70 and second 72 bushings, respectively. In the first support arm 54 the guide bar 68 is operatively coupled to the reducing equipment 66 so that the motor 50 is capable of rotating guide bar 68. A thread screwed or spiral drive 74, which is rolled into a model helical around guide bar 68, is attached to the bar guide 68 at both ends by means of bushes 70 and 72 in one version. In another version, the ends of the driving spiral are directly attached to guide bar 68. As has been indicated above, guide bar 68 is operatively coupled to the motor 50 by means of the reduction gear 66. Both the guide bar 68 as the driving spiral 74, in the version illustrated, they rotate in unison when the engine 50 rotates the equipment reduction 66. The possibility is contemplated that in another version the driving spiral 74 is operatively coupled to the equipment reduction 66 so that guide bar 68 remains stationary when drive spiral 74 rotates.
With reference to figure 2, the mechanism of trip 52 further includes a drive member 76 that engages to spiral 74 and an actuating member 78 that is coupled to the support 38. A spring (or elastic means) 80 is coupled between the driving member 76 and the acting member 78. Among their many functions, spring 80 is used to fire the lancet 42 of the device 36. During the cocking, the engine 50 by the driving spiral 74 pushes the driving member 76 towards the actuating member 78, so that the spring 80 is compressed between them. As will be described in more detail below, the potential energy stored by the spring 80 when compressed, is then use to shoot the acting member 78, the which in turn extends the lancet 42 from the device 36 Integrated incision / sampling.
As indicated, the drive member 76 has a part 82 coupled to a bar that slides over and along guide bar 68. In figure 2, part 82 coupled to the bar is positions inside the drive spiral 74 and has one or more arms 84 coupled to the spiral extending from there and that they are coupled to the driving spiral 74. In the illustrated version, the part 82 coupled to the bar has a pair of arms 84 coupled to the L-shaped spiral placed on opposite sides of the portion 82 coupled to the bar, and the arms coupled to the spiral 84 are extend through drive spiral 74. It should be appreciated that the portion attached to the bar can include more or less arms of coupling to the spiral 82 of those shown. Through the coupling between drive spiral 74 and arms 84 coupled to the spiral, the motor 50 is able to move the member of drive 76 along the longitudinal axis L in any one of the directions of impulse D or of retraction R. For example, the rotation of the drive spiral 74 in the direction of the clockwise moves drive member 76 in direction D, and when the drive spiral 74 rotates in the opposite direction to the clockwise, drive member 76 moves in the direction A. It should be appreciated, however, that the drive spiral 74 can roll up in other versions in the opposite way, so that the drive spiral 74 can rotate in the direction of the needles of the clock to move the driving member 76 in the R direction, and in counterclockwise direction to move the member of drive 76 in the D direction.
The driving member 76 further includes a portion 86 coupled to the spring and a coupling portion 88 to the acting member As shown, the spring 80 is subject to the coupling part 86 to the spring, and coupling arms 84 of the spiral hold the coupling part 82 of the bar to the coupling part 86 of the spring. In the illustrated version, the coupling part 86 of the spring has a ring shape for adjust around the driving spiral 74. One or more arms of guide 90 connect the coupling part 86 to the spring, with the coupling part 88 of the acting member. As shown, the driving member 76 has in the illustrated version, a pair of guide arms 90 placed on opposite sides of the drive member 76. At least one of the guide arms 90 is constructed to include a tongue 92 that slides between a pair of rails of guide 94, which extend from guide member 58 of the support structure 48. This, however, should be understood as that the device 30 may include more or less guide arms 90 and Guide rails 94 of those shown. The guide rails 94 together with the guide tongue 92, they bind the member of drive 76 to move along the longitudinal axis L and avoid that the drive member 76 rotates in response to the rotation of the drive spiral 74. With reference to figure 2, the part 88 of the drive member 74 defines an opening for the spring 96, through which the spring 80, the spiral of drive 74, and guide bar 68. Around opening 96, the drive member 76 defines one or more coupling notches 98 through which he passes by, the acting member 78.
With reference to figure 1, the member of Performance 78 includes one or more (in the illustrated version a pair) sliding arms 100 that slide down the notches coupling 98 defined in drive member 78. Each of the sliding arms 100 have an interruption ear 102 located at the proximal end of the drive member 76. How to sample, the interrupt ear has an insert surface beveled 104 which helps the slide fastener of the member of action 78 to part 88 of drive member 76. In the second support arm 56, the sliding arms 100 extend through the openings 106 of the sliding arm that are defined in the second support arm 56 so that the arms 100 sliders are able to move slidably through of openings 106. The ends of the sliding arms 100 which are connected to support 38, are connected together by means of a connecting member 108. In the support structure 48, the sliding arms 100 are connected together by a cocking flange 110. In the illustrated version, the flange of cocked 110 is annular and defines an opening 112 for the spiral through which the drive spiral extends 74.
As shown in Figure 2, the spring 80 it is attached to the cocking flange 110 so that the spring 80 is coupled between the coupling part of the spring 86 of the drive member 76 and the member cocking flange 110 of actuation 78. During the cocking of device 30, the motor 50 rotates the drive spiral 74 so that the member of drive 76 is pushed toward the cocking flange 110 of the acting member 78. When drive member 76 is pushed towards flange 110, a pair of cocking arms 114 extending from the second support arm 56 in an assembly parallel to the longitudinal axis L, support the flange of cocked 110 against the force applied by spring 80. It must be aware that device 30 may include in other versions, one or more cocking arms 114. The arms of cocked 114 have support tabs 116 facing each other another, in order to support the cocking flange 110 during the cocking. Next to drive member 76, the cocking arms 114 have mating surfaces 118 to the drive member with an angled or bevelled shape. From similarly, the drive member 76 has surfaces 120 coupling with the cocking arm, which are equally beveled or angled to match the shape of the coupling surfaces 118 of the drive member. When he drive member 76 is propelled into the arms of cocked 114 during cocking, the surfaces of coupling 120 of the cocking arms separate the arms from cocking 114 so that cocking flange 110 is left free. After the flange 110 has been released, the spring tablet 80 drives the cocking flange 110 away from the member of drive 76, thereby driving the integrated device 36 from lancet / sampling to make a skin incision. How I know indicated in figure 2, cocking arms 114 also have coupling surfaces 122 that are angled with in order to allow the cocking flange 110 to return to engage the support tabs 116.
The operation of the integrated device of 30 sampling of body fluid according to one version, it will now describe with reference to figures 1, 2, 3, 4 and 5. The Figures 3, 4 and 5 illustrate the relative position of the device sampling 36 in relation to skin S during the technique of sampling according to a version of the present invention. In the illustrated version, device 30 has a housing 124 attached to the structure of the support 48, and as shown, the housing 124 includes a skin contact part 126, which surrounds the sampling device 36, as well as the position of the device 30 with the skin S. In one version, the skin contact portion 126 is cylindrical in shape, but keep in mind that the skin contact part 126 may also have a shape different. In addition, the possibility of that the skin contact portion 126 may be whole or partially omitted so that the person who employs the fluid sampling device 30, manually holds the device 30 in position on the skin S. The contact part with skin 126 in the illustrated version it is sized that a force is not applied on the skin that can close the incision I once formed.
Initially, the cocking flange 110 of the trigger mechanism 52 is coupled to the support tabs 116 of cocking arms 114, as shown in figure 1. With In order to initiate an incision, the user places the device 36 either in contact or close to the skin S. In the version illustrated in figure 3, the user presses the contact part with skin 126 against skin S, so that device 36 It is positioned. To cocking the firing mechanism 52 as shown in figure 2, the engine 50 by the mechanism of reduction 66, rotates the drive spiral 74 so that the drive member 76 is pushed in the pulse direction D a along the longitudinal axis L towards the cocking flange 110 of the acting member 78. The cocking can be activated by the user through a switch or device 30 that activates the engine 50, and / or automatically through a controller in the device 30. It should be noted that the engine 50 may be activated in other ways. When the cocking flange 110 is mated with cocking arms 114, spring 80 of the mechanism trigger 52 is compressed when drive member 76 is pushed in the direction D. When the drive member 76 is further pushed in the direction D, the interruption ears 102 of acting member 78 are decoupled from part 88 of coupling of the actuating member, of the driving member 76, so that the sliding arms 100 slide into the coupling openings 98 of the drive member 76. Eventually, when the spring 80 is further compressed by the impeller member 76, the coupling surfaces of the arms 120 on the drive member 76, engages with the surfaces of coupling of the drive member 118 on the arms of cocked 114 so that cocking arms 114 are leveraged separately from each other. Once the arms 114 are sufficiently folded apart from each other, the tabs support 116 of cocking arms 114, are decoupled from the cocking flange 110.
As soon as the cocking flange 110 is decoupled, compressed spring 80 expands to drive the acting member 78 in the D direction towards the skin. After that the firing mechanism 52 has tripped, the engine 50, in a version, interrupts the drive of the drive member 76. In a version, a timer is used to control the operation of the engine 50. However, the possibility of the engine being contemplated 50 can be controlled in another way, such as through a controller and sensors. When the member of acting 78 has skyrocketed, acting member 78 compresses the receptacle 44 of the integrated lancet / sampling device 36, against the skin, and the lancet 42 inside the receptacle 44 is slides relative to receptacle 44 so that it extends to from receptacle 44, whereby incision I occurs in the skin S (figure 3). The depth control mechanism 40 controls the depth of lancet 42 penetration. Once the incision has been formed at the proper depth, a mechanism of retraction such as a leaf spring in the device 36, retract the lancet 42 back into the receptacle 44. In addition, the forward progression of the acting member 78 in address D is interrupted in a version by the ears of interrupt 102 contacting the coupling part 88 of the acting member on drive member 76. In another version, the movement of the acting member 78 is interrupted by the cocking flange 110 that hits the second arm support 56.
To prevent the pressure applied by the receptacle 44 causes premature closure of the incision, thereby limiting the fluid contributed by the incision, the body fluid sampling device 30, according to a version of the present invention, temporarily upload the device integrated lancet / sampling 36 in the R direction from the skin, as shown in figure 4. Next, the device body fluid sampling 30 reapply the receptacle 44 of device 36 against the skin or positions of the device 36 close to the skin, so that the integrated device of lancet / sampling 36, is able to collect a sample of fluid at from the incision as illustrated in figure 5. How to You will appreciate, the sampling technique in accordance with this invention, increases the sample size of fluid but not restricts fluid flow from incision I. In a version, the body fluid sampling device 30, raises the integrated lancet / sampling device 36 for two (2) seconds before reapplying device 36 against the skin. However, it will be appreciated that device 36 can be uploaded temporarily from the skin during different intervals of weather. To temporarily remove device 36 from skin S, the direction of rotation of the motor 50 in figure 2 is reversed, so the drive spiral 74 rotates in the opposite direction (compared to when the firing mechanism is cocked), with what that the drive member 76 moves in the direction of retraction R. For example, drive spiral 74 can rotate clockwise to move the member of drive 76 in the D direction, and can turn in the direction counter clockwise to move the member of drive 76 in the R direction. As can be seen in other versions, drive member 76 can advance in the direction D and retract in the R direction by turning the drive spiral 74 in the opposite direction. While drive member 76 is driven in the R direction, interrupt ears 102, which couple the drive member 76 also push the member of performance 78 in the direction R. When the acting member 78 moves in the R direction, the device 36 also moves in the R direction, whereby the receptacle 44 of the device 36 from the skin S (figure 4). In one version, the integrated lancet / sampling device 36, upload a small distance from the skin, and in particular, said device 36 rises 1 mm from the skin. It must be taken into account, without However, that device 36 can be removed at different distances from the skin.
Once device 36 has risen from the skin for a short period of time, is reversed again to then the direction of rotation of the motor 50 so that it pushes the drive member 76 in the direction D. The force applied by the drive member 76 against the spring 80 is transferred to the actuating member 78 so that device 36 moves in the direction D towards the skin (figure 5). When the device integrated lancet / sampling 36 contact skin S or se positioned at a desired distance from the skin S, the motor 50 can be disconnected. The body fluid F that has formed as a droplet from the incision I in the skin S, travels through capillary action within the capillary cavity formed in the receptacle 44 and is deposited on the test strip 46 in the device 36 so that the fluid sample can be analyzed.
To reset the sampling device of the body fluid 30, for future sample collection, the engine 50 drives the drive member 76 in the retraction direction R so that the actuation mechanism 78 is also pushed in the direction of retraction R. When the actuation mechanism 78 is pushed in the R direction, the cocking flange 110 is attaches to the re-coupling surfaces 122 of the arms of cocked 114, and arms 114 are leveraged apart so that the cocking flange 110 is re-coupled with the tabs of support 116 of cocking arms 114. Once the device Body fluid sampling 30 has restarted, it can cocking the trigger mechanism 52 again and firing of the way described above.
The possibility is contemplated that, in another version, a purely mechanical device can be used to carry out the sampling technique as described above, in which the integrated lancet / sampling device is removed temporarily and reapplied to the skin. In one version, it employs a hydraulic and / or pneumatic cylinder, to dampen or decrease the mechanical movement in which the device Integrated lancet / sampling is temporarily removed and returned to Apply.
The invention has been illustrated and described in detail in the drawings and description above, which should considered as illustrative and not restrictive, in the well understood that it has only been shown and described the preferred version and you want all the changes and modifications that are within the spirit of the invention, be protected.
1. A device for sampling a fluid body, which includes:
an integrated sampling-incision device that includes a test strip for the analysis of a body fluid, and a receptacle (44) and a lancet for making an incision in the skin, which lancet is slidably received in the receptacle, where the receptacle defines a sampling cavity for the removal of body fluid from the incision on the test strip, by capillary action; characterized in that, the device further comprises means (78) for compressing the receptacle against the skin and sliding the lancet into the receptacle relatively to the receptacle so that it leaves the receptacle thereby producing an incision in the skin, and means (50) for retraction and new application against the skin to promote body fluid to flow from the incision.
2. The device of claim 1, in where the means to remove and reapply the device Integrated incision-sampling, include a motor operable to remove and reapply the integrated device of incision-sampling, against the skin.
3. The device of claim 1, the which also includes:
a mechanism of trigger coupled to the integrated sampling device for the integrated device shot of incision-sampling; Y
means for automatically arm the firing mechanism.
4. The device of claim 1, which it also comprises a coupled depth control mechanism to the integrated sampling-incision device, to adjust the depth of lancet penetration.
ES03814826T 2002-12-30 2003-12-16 Blood collection suspension system. Active ES2334128T3 (en)
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