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1253 results about "Penetration depth" patented technology

Penetration depth is a measure of how deep light or any electromagnetic radiation can penetrate into a material. It is defined as the depth at which the intensity of the radiation inside the material falls to 1/e (about 37%) of its original value at (or more properly, just beneath) the surface.

Method for modulating light penetration depth in tissue and diagnostic applications using same

Devices and methods for non-invasively measuring at least one parameter of a sample, such as the presence of a disease condition, progression of a disease state, presence of an analyte, or concentration of an analyte, in a biological sample, such as, for example, a body part. In these devices and methods, temperature is controlled and is varied between preset boundaries. The methods and devices measure light that is reflected, scattered, absorbed, or emitted by the sample from an average sampling depth, dav, that is confined within a region in the sample wherein temperature is controlled. According to the method of this invention, the sampling depth dav, in human tissue is modified by changing the temperature of the tissue. The sampling depth increases as the temperature is lowered below the body core temperature and decreases when the temperature is raised within or above the body core temperature. Changing the temperature at the measurement site changes the light penetration depth in tissue and hence dav. Change in light penetration in tissue as a function of temperature can be used to estimate the presence of a disease condition, progression of a disease state, presence of an analyte, or concentration of an analyte in a biological sample. According to the method of this invention, an optical measurement is performed on a biological sample at a first temperature. Then, when the optical measurement is repeated at a second temperature, light will penetrate into the biological sample to a depth that is different from the depth to which light penetrates at the first temperature by from about 5% to about 20%.
Owner:ABBOTT DIABETES CARE INC

Method and device for placing dental implants

The invention relates to a method and device for placing implants (1) using a surgical template (11) which is made from tomographic cuts in the patient's jawbone (7). According to the invention, step drills (4) and calibrating drills (5), having a single standard diameter for each type of implant (1), are guided through drill bushings (18) which are inserted into bores (15) in the template (11) in order to produce any drilling sequence corresponding to an implant plan. The penetration depth of the drills (4, 5) is controlled by the height of the bores (15) or by the drill rings (21). The aforementioned template (11) bores (15) serve as a guide for the precise placement of the implants (1) owing to the adapted implant supports (3). Moreover, washers (23), which are mounted around the implant supports (3), limit compression in relation to the implants (1) while said implants are being placed (20). The above-mentioned characteristics serve to limit the required number of drills (4, 5) and implant supports (3) to the longest models only. The inventive method and device are particularly suitable for computer-assisted implantology systems.
Owner:MATERIALISE DENTAL NV

Adjustable tip for a lancet device and method

A lancet device, a tip for a lancet device and method of using the lancet device. The lancet device has a body portion for firing the lancet and a tip portion. The tip for a lancet device includes a front assembly which includes a side wall portion, a skin-engaging portion at least partially defining a plane beyond which a lancet needle may extend, and a lancet stop element, a slot is disposed in one of the sidewall portion and the lancet stop element, and at least one following element extending into the slot, wherein the lancet stop element is moveable towards and away from the plane in response to movement of the at least one following element. The method includes adjusting a set depth of penetration of the needle by moving the at least one following element, disposing the distal end of the lancet device against a surface of skin, and triggering the firing mechanism to cause the needle to penetrate the surface of the skin to the set depth, wherein the puncture allows a blood sample to be taken.
Owner:STAT MEDICAL DEVICES

Lancing device with a floating probe for control of penetration depth

InactiveUS20050085839A1Depth of penetrationIncision instrumentsCatheterEngineeringPenetration depth
A lancing device includes a lancing mechanism, a floating probe and a pressure tip. The lancing mechanism includes a lancet carriage, a lancet holder slidably connected to the lancet carriage, and a lancet attached to the lancet holder. The pressure tip of the lancing device is configured for engaging a target site and creating a target site bulge. The floating probe is adapted to floatably contact the target site bulge and to operatively interact with the lance carriage to control a penetration depth of the lancet into the target site bulge. A method for lancing a target site includes providing the lancing device describe above and contacting the pressure tip of the lancing device with the target site. The pressure tip is then urged towards the target site to create a target site bulge with the floating probe of the lancing device floating on a surface of the target site bulge. Next, the target site bulge is lanced while the floating probe operatively interacts with the lance carriage to control a penetration depth of the lancet.
Owner:LIFESCAN IP HLDG LLC

Medicine injection devices and methods

A reloadable medicine injector and methods are described in which a barrel with a receiving cavity is adapted to slidably receive a syringe subassembly for axial movement therein. Upon removal of a safety and release of a syringe driver, the syringe driver moves forward and injects the syringe needle. A plurality of penetration controls are shown for controlling injection needle penetration depth. The penetration controls have an abutment and various lengths to provide different needle penetration depth positions. In one form of penetration control a sleeve is used against which the syringe or related parts contact. In another form the front return spring is used as a penetration control. A cushioning ring may be used to reduce syringe breakage. A load distribution and guide ring may be used to distribute loading applied to the syringe and help guide the moving syringe.
Owner:WASHINGTON BIOTECH CORP +1

Skin resurfacing and treatment using biocompatible materials

Biocompatible materials are propelled at the skin with sufficient velocity to cause desired resurfacing of skin layers to the desired penetration depth. The materials, such as dry ice or water ice, are harmonious with the human body and thus eliminate foreign body reactions. Various materials may be used in combination, including local anesthetics and vasoconstrictors in solid or liquid form. The biocompatible solid or liquid particles are suspended in a cold carrier fluid and propelled through an insulated delivery system to the surface of the skin. The treatment of diseased skin lesions may be accomplished using the present invention as a drug delivery system.
Owner:PEARL TECHNOLOGY HOLDINGS LLC

Fiber optic receptacle and plug assemblies with alignment and keying features

A fiber optic receptacle and plug assembly comprising a fiber optic receptacle adapted to be mounted within a connector port of a network connection terminal and a fiber optic plug mounted upon an end of a fiber optic cable, wherein the fiber optic receptacle and the fiber optic plug comprise complimentary alignment and keying features that allow the fiber optic receptacle to receive only a fiber optic plug of like ferrule configuration. The fiber optic plug comprises an alignment sleeve operable for receiving and optically connecting at least one plug ferrule and at least one receptacle ferrule. The receptacle is suitable for use in enclosures requiring a minimal receptacle penetration depth, wherein the fiber optic receptacle comprises a shoulder that is secured against an inner wall of the enclosure to provide strain relief against cable pulling forces of up to about 600 lbs.
Owner:CORNING OPTICAL COMM LLC

Lancet having adjustable penetration depth

Lancet device having an adjustable penetration depth. The lancet device includes a housing, a cap for covering the housing and for positioning the lancet device relative to a skin surface, a needle holding member for holding a lancet which needle holding member is at least partially contained within the housing, a biasing element for biasing the needle holding member toward an extended position, and a trigger for releasing the needle holding member from a retracted position. The lancet device further includes a mechanism for adjusting a penetration depth of a lancet. The penetration depth adjustment mechanism may involve adjusting a travel distance of the needle holding member, wherein the mechanism is positioned within at least one of the housing and the cap during at least a portion of length of travel of the needle holding member. The penetration depth adjustment mechanism may involve adjusting a travel distance of the needle holding member by adjusting a length of the needle holding member. The penetration depth adjustment mechanism may involve aligning at least one stop of the housing with at least one protrusion of the needle holding member. The penetration depth adjustment mechanism may involve a cavity in the needle holding member for holding a lancet, wherein the cavity depth of the needle holding member is adjusted.
Owner:STAT MEDICAL DEVICES

Lancing Device and Method of Sample Collection

A lancing device and method for self-collecting a sample of body fluid by penetrating a body tissue at a sampling site. The invention includes a housing geometry configured for ease of use at different sampling sites on the body, even by persons having reduced dexterity and / or poor vision. Depth of penetration is selectively controlled by adjusting the stroke range of a spring-driven lancet carrier. A pressure applicator is included for stimulating flow of the body fluid. A transparent portion permits observation of the sampling site.
Owner:ABBOTT DIABETES CARE INC

Intravitreal injection device, system and method

An intravitreal injection device for administering a pharmacological agent formulation to an intravitreal compartment of an eye, comprising (i) a nozzle member having an internal formulation chamber that is adapted to receive and contain the pharmacological agent formulation therein, (ii) a microneedle having a first end that is in communication with the nozzle member and a second ejection end, (iii) and piercing depth limiter means for limiting the penetration depth of the microneedle into the eye, the microneedle piercing depth limiter means including guide means for positioning the limiter means and guiding the microneedle.
Owner:KMG PHARMA

Lancet having adjustable penetration depth

Lancet device including a first housing. A first guide wall is disposed within the first housing. The first guide wall includes an opening. A cap removably mounted to the first housing. A needle holding member for holding a lancet. At least a portion of the needle holding member being able to move within the opening. A first spring for biasing the needle holding member toward an extended position. The first spring surrounding a portion of the needle holding member and being disposed between the first guide wall and a shoulder of the needle holding member. A movable trigger having a first position and a second position. A movable second housing including a proximal end, a distal end and a second guide wall arranged at the proximal end. The second guide wall including an opening. A portion of the needle holding member being able to move within the opening of the second guide wall. The second housing being configured to move the needle holding member to the retracted position when the second housing is moved away from the first housing. The proximal end of the second housing being configured to move axially within the distal end of the first housing. A second spring for biasing the second housing towards the first housing. The second spring surrounding a portion of the needle holding member and being disposed between the second guide wall and another shoulder of the needle holding member. At least a portion of the needle holding member is always retained within the first housing.
Owner:STAT MEDICAL DEVICES

Heat radiator

InactiveUS6294758B1Excellent in quick heating capabilityReduce power supplyFluid heatersHeater elementsHuman bodyEngineering
A heat radiator for emitting infrared radiation to the human body has a heat source which is energized to emit infrared radiation, whose penetration depth into the human body is to near warmth sensing points of the human body, and an insulator for covering the surface of the heat source to be directed toward the human body. The free surface of the insulator forms a surface for contacting with the human body and the thickness of the insulator is less than the penetration depth of the infrared radiation into the insulator.
Owner:TOTO LTD

Catheter with omni-directional optical lesion evaluation

A catheter is adapted to ablate tissue and provide lesion qualitative information on a real time basis, having an ablation tip section with a generally omni-directional light diffusion chamber with one openings to allow light energy in the chamber to radiate the tissue and return to the chamber. The chamber is irrigated at a positive pressure differential to continuously flush the opening with fluid. The light energy returning to the chamber from the tissue conveys a tissue parameter, including without limitation, lesion formation, depth of penetration of lesion, cross-sectional area of lesion, formation of char during ablation, recognition of char during ablation, recognition of char from non-charred tissue, formation of coagulum around the ablation site, differentiation of coagulated from non-coagulated blood, differentiation of ablated from healthy tissue, tissue proximity, and recognition of steam formation in the tissue for prevention of steam pop.
Owner:BIOSENSE WEBSTER INC

Apparatus and method thereof for drilling holes in discrete controlled increments

InactiveUS20100034605A1Increased level of safety securityShorten the timeDrilling/boring measurement devicesThread cutting machinesBrain biopsyEngineering
An apparatus and method for forming a hole in material for non-medical and medical purposes such as a cranial burr hole for ventriculostomy and brain biopsy procedures. The apparatus includes a main unit upon which a drill unit is located. The drill unit includes a drill bit and an on / off switching means. The main unit includes a handle which is suitable for grasping, and an advancing mechanism including a release / engage mechanism, and an advancing lever and an optional on / off switch. The drill unit is advanced a predetermined distance relative to the main unit each time an advancing lever is pulled. In use, the apparatus is placed in a desired position upon the material to be drilled such a patient's skull and is stabilized by a stabilization platform, the apparatus is then turned on, and the advancing lever is pulled to advance the drill unit a predetermined distance relative to a longitudinal axis of the main unit with each pull of the advancing lever. The procedure is ended when the desired depth of penetration has been reached, or the material such as in the case of skull bone, has been completely penetrated.
Owner:CONCEPTUAL GRAY

Lancing device with trigger mechanism for penetration depth control

A lancing device includes a housing, a lancing mechanism operatively attached to the housing, a pressure tip and a trigger mechanism. The pressure tip is moveably attached to the housing and is configured to engage a target site and create a target site bulge. The trigger mechanism is configured for detecting a target site bulge of a predetermined height and, thereafter, triggering an immobilization of the pressure tip with respect to the housing. The immobilization of the pressure tip prevents further change in the location of the target site bulge relative to the housing. Since the location of target site bulge relative to the housing is controlled by the trigger mechanism, via immobilization of the pressure tip, penetration depth is consistent. A method for lancing a target site includes providing the lancing device described above and contacting a pressure tip of the lancing device with the target site. Next, the pressure tip is urged towards the target site, thereby creating target site bulge that is detected by a trigger mechanism of the lancing device. Subsequently, an immobilization of the pressure tip with respect to a housing of the lancing device is triggered. Thereafter, the target site bulge is lanced with a lancet mechanism of the lancing device.
Owner:LIFESCAN INC

Ultrasound guided optical coherence tomography, photoacoustic probe for biomedical imaging

An imaging probe for a biological sample includes an OCT probe and an ultrasound probe combined with the OCT probe in an integral probe package capable of providing by a single scanning operation images from the OCT probe and ultrasound probe to simultaneously provide integrated optical coherence tomography (OCT) and ultrasound imaging of the same biological sample. A method to provide high resolution imaging of biomedical tissue includes the steps of finding an area of interest using the guidance of ultrasound imaging, and obtaining an OCT image and once the area of interest is identified where the combination of the two imaging modalities yields high resolution OCT and deep penetration depth ultrasound imaging.
Owner:RGT UNIV OF CALIFORNIA

Microwave array applicator for hyperthermia

Apparatus (10) for treating skin tissue with microwave radiation (e.g. having a frequency of 1 GHz to 300 GHz) is disclosed in which an array of radiating elements (18), e.g. patch antennas are arranged on a flexible treating surface (16) for locating over and conforming with a region of skin tissue (24) to be treated. The radiating elements (18) receive microwave energy from a feed structure and are configured to emit outwardly a electromagnetic field which permits the region of skin to a substantially uniform penetration depth. Each radiating element (18) may have an independently controllable power supply to permit relative adjustment of the field across the treatment surface. Each radiating element may have a monitoring unit to allow adjust based on detected reflected power. Each independently controllable power supply may include a dynamic impedance matching unit.
Owner:UNIV OF WALES BANGOR

Medicine injection devices and methods

A reloadable medicine injector and methods are described in which a barrel with a receiving cavity is adapted to slidably receive a syringe subassembly for axial movement therein. Upon removal of a safety and release of a syringe driver, the syringe driver moves forward and injects the syringe needle. A plurality of penetration controls are shown for controlling injection needle penetration depth. The penetration controls have an abutment and various lengths to provide different needle penetration depth positions. In one form of penetration control a sleeve is used against which the syringe or related parts contact. In another form the front return spring is used as a penetration control. A cushioning ring may be used to reduce syringe breakage. A load distribution and guide ring may be used to distribute loading applied to the syringe and help guide the moving syringe.
Owner:WASHINGTON BIOTECH CORP +1

Agricultural implement with combined down force and depth control

An agricultural implement system is provided that includes a down force cylinder configured to apply a downward force to a row unit, and a depth control cylinder configured to vary a penetration depth of a ground engaging tool of the row unit. The agricultural implement system also includes a valve assembly in fluid communication with the down force cylinder and the depth control cylinder. The valve assembly is configured to automatically adjust the downward force by varying fluid pressure within the down force cylinder based on fluid pressure within the depth control cylinder.
Owner:BLUE LEAF I P INC

Apparatus and method for improving chamfer quality of disk edge surfaces with laser treatment

A carbon dioxide laser is used as a non-mechanical means for smoothing and polishing the as-cut chamfer surface at the edge of the disk. Applying laser radiation to the glass surface causes transient melting and resolidification. Due to surface tension effects, the glass resolidifies to produce a surface that is significantly smoother than it was before irradiation. If scratches or abrasive marks are present on the glass surface prior to irradiation, the irradiation process "polishes out" these defects as long as they are not too deep. At a wavelength near 10 mum, the penetration depth of the radiation into the glass is approximately 1 mum. Therefore, scratches and defects of this order of magnitude are eliminated. The quality of the resulting modified chamfer surface is far superior to the original mechanically ground and polished surface.
Owner:WESTERN DIGITAL TECH INC

Method and apparatus for penetrating tissue

A tissue penetrating system has a housing member. A plurality of penetrating members are positioned in the housing member. A tissue stabilizing member is coupled to the housing. A penetrating member sensor is coupled to the plurality of penetrating members. The penetrating member sensor is configured to provide information relative to a depth of penetration of a penetrating member through a skin surface.
Owner:PELIKAN TECH INC

Intravitreal injection device and system

An intravitreal injection system for administering a pharmacological agent formulation to an intravitreal compartment of an eye, comprising (i) an injection member coupled to, or comprising, an internal formulation chamber that is adapted to receive and contain the pharmacological agent formulation therein, (ii) a needle having a first end that is in communication with a formulation chamber and a second injection end, and (iii) a movable platform for positioning the system on the eye, guiding the needle, and limiting the penetration depth of the needle into the eye.
Owner:KMG PHARMA

Fiber optic receptacle and plug assembly including alignment sleeve insert

A fiber optic receptacle and plug assembly includes a fiber optic receptacle adapted to be mounted within a connector port of a network connection terminal and a fiber optic plug mounted upon an end of a fiber optic cable, wherein the fiber optic receptacle and the fiber optic plug comprise complimentary alignment and keying features that allow the fiber optic receptacle to receive only a fiber optic plug of like ferrule configuration. The fiber optic receptacle includes an alignment sleeve insert operable for receiving and optically connecting at least one receptacle ferrule and at least one opposing plug ferrule. The receptacle is suitable for use in enclosures requiring a minimal receptacle penetration depth, wherein the fiber optic receptacle comprises a shoulder that is secured against an inner wall of the enclosure to provide strain relief against cable-pulling forces of up to about 600 lbs.
Owner:CORNING OPTICAL COMM LLC
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