Terumo Kabushiki Kaisha

Hosiden Corporation

Daisuke Nishiuchi

Tetsuya Ooyauchi

Toshihisa Nakamura

Tetsuya Oyauchi

Masao Takinami

Mitsuhiro Asano

Yoshiaki Yaguchi

Ryokei Aikawa

Toshikazu Iwaki

Takayuki Sugiyama

A medical puncture needle includes an end portion including a needle tip; and a main body portion contiguous with the end portion, having a substantially circular cross-sectional outer shape. The end portion includes a first bevel formed by a curved surface, the bevel having an angle that gradually decreases toward the needle tip in an axial direction, in a cross-section orthogonal to the axial direction, relative to an imaginary plane that extends along an axis of the main body portion.

Medical puncture needle and method of manufacturing puncture needle

A puncture instrument includes a movable body movably disposed in a case, and a needle unit held by the movable body and having a needle. When a distal end face of the movable body is brought into abutment against a region to be punctured and the case is advanced toward the region to be punctured, the case is advanced together with the needle unit, and the tip end of the needle becomes protruded from the movable body and punctures the region to be punctured. An arm of the needle unit is abutted against and turned about a fulcrum member, thereby withdrawing the needle rearwardly.

Puncture instrument

A body fluid sampling unit includes a puncture device including a needle having a sharp needle point and a drive mechanism for operating the needle to puncture a living body surface with the needle point, a tip including an introducing section for introducing a body fluid flowing out from a puncture portion of the living body surface punctured with the needle point, a test paper for detecting a predetermined component in the body fluid, and a tip body mounted to a component measuring device for measuring the quantity and/or property of the predetermined component detected by the test paper; and a case including a mechanism containing section for containing the puncture mechanism so that the needle point of the puncture mechanism can be moved by the drive means, and a sampling implement containing section for containing the body fluid sampling implement so that the tip can be taken out.

Body fluid sampling unit

A puncture instrument includes a needle assembly, a hub passage for axially guiding a hub, a needle passage communicating with the hub passage and having a distal end opening for allowing the tip end of a needle to project instantaneously therethrough, two arms having first junctions connected to the hub and inclined rearward in a direction away from the hub in an initial state, two push rods connected to second junctions of the arms and extending rearward, a button for pushing the push rods forwardly, and fulcrum members disposed more closely to the distal end than the arms for abutment against portions of the arms when the arms are moved. When the push rods are pushed forwardly by the button, the arms push the needle assembly forwardly, thereafter have portions thereof brought into abutment against the fulcrum members, and turn to pull the needle assembly rearward.

A blood component measurement device has a puncturing unit provided inside a housing and having a puncture needle; a button unit for advancing and retreating the puncture needle; a contact mechanism coming into contact with the skin of a person to be measured; and a holder for displaceably holding the puncturing unit. The blood component measurement device also has an introduction section at the substantially center of a contact member. After the skin is punctured by the puncture needle provided at the substantially center of the mechanism, the introduction section introduces blood to testing paper when the contact member of the contact mechanism is displaced in a sliding manner along a guide member.

Blood component measurement device and tip for blood measurement

A blood component measurement device () has a puncturing unit () provided inside a housing () and having a puncture needle (); a button unit () for advancing and retreating the puncture needle (); a contact mechanism () coming into contact with the skin of a person to be measured; and a holder () for displaceably holding the puncturing unit (). The blood component measurement device () also has an introduction section () at the substantially center of a contact member (). After the skin is punctured by the puncture needle () provided at the substantially center of the mechanism (), the introduction section () introduces blood to testing paper () when the contact member () of the contact mechanism () is displaced in a sliding manner along a guide member ().

A centesis instrument, wherein a patient applies a contact part to a palm, a finger, or an arm in the state of gripping an outer tube by hand and presses the outer tube against its measured portion. A third coiled spring is compressed to increase spring power. When the outer tube reaches a prescribed position, the tip face of the vertical portion of a centesis button reaches a hole part, and a projected part is allowed to be pressed. When the patient presses a button body from a direction perpendicular to the axis of the button body by using a finger at that position, a locking piece is separated from a locking part and the centesis needle of a centesis needle unit is instantaneously projected from the opening part of the contact part to the measured portion by the spring power of the third coiled spring for centesis. Thus, a prescribed amount of blood can be taken out from the measured portion.

Growing community of inventors

Ashigarakami-gun, Japan

Daisuke Nishiuchi