1653 results about "Blood collection" patented technology

Method and apparatus for obtaining a sample of blood from a patient for subsequent diagnostic tests, e.g., glucose monitoring. In one aspect of the invention, the method comprises the steps of:(a) placing a blood collection device over a region on the surface of the skin from which said sample is to be obtained,(b) forming a seal between said blood collection device and said surface of the skin,(c) creating a vacuum sufficient to result in said surface of the skin becoming stretched and engorged with blood,(d) triggering a lancing assembly and causing a lancet to penetrate said skin,(e) retracting said lancet,(f) withdrawing blood toward and onto a fluid collector, and(g) releasing the vacuum.In another aspect of the invention, an apparatus for carrying out the method described previously is provided. The apparatus comprises:(a) a housing having a sealable chamber located therein and a sealable opening in fluid communication with said sealable chamber,(b) a power source,(c) a vacuum pump operably connected to said power source, said vacuum pump in communication with said sealable chamber,(d) a lancing assembly positioned within said housing, said lancing assembly capable of moving a lancet towards said sealable opening, and(e) a fluid collector positioned in said sealable chamber, said fluid collector in fluid communication with said sealable opening.

A device and method for lancing a patient, virtually simultaneously producing and collecting a small fluid sample from a body. The device comprises a blood collection system including a lancing needle (16), drive mechanism (11), kneading or vibration mechanism (25), optional suction system (7), and sample ejection mechanism. The device is preferably sized to be hand-held in one hand and operable with one hand. The device can optionally contain integral testing or analysis component (83) for receiving the sample and providing testing or analysis indication or readout for the user. A method involves piercing the skin at a rapid rate, kneading the surrounding area by ultrasonic action, piezoelectric or mechanical oscillation to stimulate the blood flow from the wound, drawing the fluid using a pumping system.

A blood collection device includes a needle hub with a flashback chamber and a vent plug covering the flashback chamber. The vent plug permits a flow of air across the vent plug but prevents a flow of liquid across the vent plug. An intravenous cannula is mounted to the hub and extends into the flashback chamber. A non-patient cannula is mounted to the hub and also extends into communication with the flashback chamber. A passive shielding device is mounted to the hub and can be moved from a proximal position where the intravenous cannula is exposed to a distal position where the intravenous cannula is partly shielded. The flashback chamber can be observed to provide an early indication of venous access. A fluid collection tube then can be placed in communication with the non-patient needle and can simultaneously trigger movement of the safety shield.

A lancet comprises a slider having a puncture needle holding mechanism at its one end; a cam ring which has a continuous cam groove, is rotatable about a support shaft, and has a cam ring claw and an anti-return claw for restricting the rotation; a ring spring for applying a force to rotate the cam ring; a rotatable stopper arm for holding and releasing the rotation of the cam ring; and a rotatable ratchet for restricting the direction of rotation of the cam ring. A puncture needle unit comprises a puncture needle body which is integrally molded with a protrusion to be fitted to the lancet, a rotation stop rib, and a puncture needle; and a puncture needle cap which is lightly pressed into the puncture needle body.

A self-sealing male Luer connector for connection with a female Luer connector. The male Luer connector includes a housing having a distally-projecting tubular male body and a surrounding cuff interconnected by a proximal wall in which is formed at least one activation opening. A valve plug is slidably installed within the housing and formed with a distal end configured to sealingly engage the distal end of the male body's interior flow passage and with at least one activation arm at its proximal end configured to extend through the activation opening into the cavity formed between the male body and the cuff. An elastomeric device is sealingly configured within the activation opening about the activation arm to secure the valve plug in position and bias it distally. The proximal end of the male Luer connector may be configured as a conventional female connector, a blood collection device, or other such device.

The present invention provides an integrated measuring device that includes a blood collection system for collecting blood for diagnostic purposes. The blood collection system comprises an electric motor which provides energy for propelling a lancet. The blood collection system comprises a mechanical energy store in which the electric energy that is converted by the motor is stored in the form of mechanical energy. The use of a mechanical energy store allows the use of known mechanical drive elements. The blood collection system can also be electrically activated and is thus easy to use for the operator. The motor can also be coupled to another system component, such as a test strip or lancet drum, to operate it.

A sensor for blood component analysis, which allows even a trace amount of blood to be led to an analysis portion reliably. The sensor for blood component analysis includes a substrate, a spacer, and a cover. The cover is disposed on the substrate with the spacer intervening between the cover and the substrate, whereby a space that serves as an analysis portion and a channel for leading blood to the analysis portion is formed inside the sensor. Through holes are formed in the substrate and the spacer, respectively, so that a common through hole through which a needle of a lancet can pass is formed when the spacer is disposed on the substrate. The through hole of the spacer communicates with the channel and a top of the through hole of the spacer is covered with the cover, whereby a lancing portion is formed by the common through hole and a portion of the cover covering the top of the through hole of the spacer. In use, the sensor is placed at a position where blood collection is to be performed, the portion of the cover covering the lancing portion is broken through with the needle of the lancet so that the needle is allowed to pass through the common through hole to puncture the position, and blood that has come out is guided by a downwardly protruding burr formed when the cover is broken through so that the blood is led to the channel and flows through the channel to be led to the analysis portion.

A lancet is pressed against a puncture needle cartridge while fitting a puncture needle loading inlet of the lancet to the axis of a puncture needle on the puncture needle cartridge. At this time, in order to facilitate the operation, one of plural puncture needles arranged in parallel is tilted up from its initial position at a predetermined angle, and the puncture needle is guided into a puncture needle holding rod of the lancet, and simultaneously, the puncture needle is pressed up to a position where the rear end part of the needle pushes the bottom surface of a puncture needle loading chamber of the puncture needle holding rod, whereby the puncture needle is loaded. When discarding a used puncture needle, the puncture needle is inserted into a lancet guide member of the puncture needle cartridge, whereby the puncture needle is reliably captured to be discarded.

A blood sensor comprises a base (12), a detection part (16) disposed on the base (12), a blood collection needle (13) disposed at a front end (12a) of the base (12), a negative pressure generation part (17) for applying negative pressure to a portion of the blood collection needle (13), and a supply path (15) for supplying blood collected by the blood collection needle (13) to a detection part (16).

A device and method for lancing a patient, virtually simultaneously producing and collecting a small fluid sample from a body. The device comprises a blood collection system including a lancing needle (16), drive mechanism (11), kneading or vibration mechanism (25), optional suction system (7), and sample ejection mechanism. The device is preferably sized to be hand-held in one hand and operable with one hand. The device can optionally contain integral testing or analysis component (83) for receiving the sample and providing testing or analysis indication or readout for the user. A method involves piercing the skin at a rapid rate, kneading the surrounding area by ultrasonic action, piezoelectric or mechanical oscillation to stimulate the blood flow from the wound, drawing the fluid using a pumping system.

A safety needle device includes a housing including a passageway with a needle cannula extending therefrom. A shielding member is movable between a first position in which a puncture tip of the needle cannula is exposed therefrom and a second position in which the puncture tip of the needle cannula is encompassed therein. The shielding member is maintained in the first position against a biasing force which biases the shielding member toward the second position. A fluid and / or temperature activation material, such as a hydrogel or a compressed sponge, is associated with the shielding member and is adapted to deform upon contact with a fluid medium and / or a certain temperature or temperature range. Fluid flowing through the needle cannula, such as blood flow during a blood collection procedure, causes the activation material to deform, such as through expansion, thereby releasing the shielding member from the first position and allowing the drive member to bias the shielding member toward the second position.

This invention discloses a donor blood donation and sampling system including a donor needle adapted for drawing blood from a body, a blood collection bag coupled to a blood collection conduit which is coupled to the donor needle, a blood sampling conduit also coupled to the donor needle, and a sampling tube assembly arranged for selectable fluid engagement with the blood sampling conduit and for selectable clamping engagement with at least said blood collection conduit. A donor blood donation and sampling method is also disclosed.

The blood collection set includes an IV needle assembly, a length of flexible plastic tubing extending from the IV needle assembly and a non-patient needle assembly. The set is formed with a venting mechanism that permits an outflow of air, while blocking an outflow of blood or other fluids. Thus, the venting mechanism enables air that had existed in interior portions of the blood collection set to be vented allowing for greater flash visualization on venous entry, and avoids the need to employ a discard tube.

A needle assembly includes a transparent or translucent housing with a fluid inlet end, a fluid outlet end, a flashback chamber and a venting mechanism therebetween. Substantially axially aligned inlet and outlet cannulas extend from the housing and communicate with the chamber. A sealable sleeve covers the external end of the outlet cannula. Relative volumes of the cannulas, the chamber and the sleeve are selected to provide rapid reliable flashback indicative of venous entry with an internal vent plug over the outlet of the flashback chamber to inhibit leakage of blood from the needle on withdrawal from the patient.

A package is provided for a medical device that a spring-driven button-actuated safety shield. The package includes a tray with a bottom wall and sidewall enclosure that extends upwardly from the bottom wall a distance greater than the height or thickness of the medical device. A flange extends outwardly from edges of the sidewall enclosure opposite the bottom wall. At least two gripping towers are formed unitarily with the bottom wall and project upwardly a distance greater than the thickness or height of the medical implement. Gripping towers are spaced from one another and are configured to grippingly engage the medical implement on opposite respective sides of the actuating button for preventing inadvertent actuation of the safety shield while the medical implement is in the tray. A cover extends removably across the flange and is supported by the gripping towers.

A device is provided for blood extraction and collection from the placenta and / or the umbilical cord through a system that combines the collection of the blood falling under gravity, together with a suction system facilitating this fall. Thus, a larger amount of blood can be extracted than is obtained by conventional gravity systems without posing a health risk to the mother, allowing a controlled suction that prevents premature detachment of the placenta.

A needle assembly is disclosed. The needle assembly includes a housing having a flash chamber, and having a distal end and a proximal end engageable with a specimen collection container. The assembly includes a cannula having a patient end, a non-patient end, and a sidewall extending therebetween defining a cannula interior. The patient end of the cannula projects at least partially from the distal end of the housing, and the cannula interior is in fluid communication with the flash chamber. The assembly further includes a shield restrainably engaged with a portion of the housing and axially transitionable over the patient cannula from a retracted position in which the patient end is exposed, to an extended position in which the patient end is shielded by at least a portion of the shield, wherein at least a portion of the flash chamber is visible in the retracted position.

A safety needle and blood collection and sampling system precluding needlstick injury by contaminated needles wherein a used needle is captured immediately within its carrier upon retraction of the needle flush with the carrier. Blood sampling is effected without reverse flow through the system and without reuse or exposure of a contaminated needle. Simplified means of assembling the needle are also set forth to minimize cost with maximum reliability notwithstanding withstanding a minimum of components.

The present invention is a holder assembly having a holder housing, collar and safety shield. The safety shield is pivotably attached to the collar. The collar is receiving within a recess defined by the annular skirt and needle receiving port of the holder housing. The collar and attached safety shield may thus be rotated about the holder housing and an attached needle assembly, thereby allowing a user to freely position the safety shield during needle insertion and preventing the dislocation of safety shield from the holder housing.

A safety device for protecting the needle of a blood collector includes a guard member that automatically covers the needle, after a blood collection procedure has been completed. Prior to the procedure, the guard member is restrained on the device in a proximal position to expose the needle, and to thereby facilitate the insertion of the needle into a vein of a patient. When a blood collection vial is engaged with the device, the guard member is released to move distally over the needle. Thus, after a procedure, and as the needle is being withdrawn from the patient, the guard member covers the needle to protect against subsequent inadvertent “sticks”.

A self-sealing male connector includes a tubular male body and an elastomeric resilient tip disposed on the distal end of the tubular male body. The elastomeric tip has a transverse size that is greater that the size of a female connector and a shape that differs from the female shape so that engagement of the two will result in reshaping the male tip to the shape of the female flow channel and the male will create a seal with the channel. The male tip is formed with a slit and a hollow core that provides a flow passage formed in the male body. As the male tip is reshaped due to engagement with a female connector, the slit opens to establish fluid flow through the male connector. In one embodiment, the transverse shape of the male tip is elliptical having a major axis along which the slit is formed. In one embodiment, the male tip is oversized in all transverse dimensions and forms an edge seal with the female connector at first contact. The proximal end of the male connector may be configured as a conventional female connector, a blood collection device, or other device. The male body can have a Luer shape.

A blood collection set including a non-patient needle assembly interconnected with an intravenous needle assembly through tubing is provided. The non-patient needle assembly includes a hub assembly adapted for mounting with a blood collection set, and an internal blunting member including a blunted tip. The non-patient needle assembly further includes an external cannula concentric with the internal blunting member and including a non-patient puncture tip adjacent the blunted tip. The external cannula is axially displaceable with respect to the hub assembly between a first retracted position in which the non-patient puncture tip extends beyond the blunted tip and a second activated position in which blunted tip extends beyond the non-patient puncture tip.