Abstract: A syringe includes a barrel and a rotatable element on the barrel; for example at a proximal location along the length of the barrel. The rotatable element rotates at least partially around the barrel. When a handle is associated with the rotatable element, the barrel may rotate as the handle his held substantially stationary or the handle may be rotated while the barrel and any peripheral device secured thereto remain substantially stationary. When handles are associated with a rotatable element that may be removed from a barrel, a barrel that is disassembled from the rotatable element may be replaced with another barrel of the same or a different configuration. Methods of using a syringe with a rotatable element on a barrel thereof are also disclosed.

Abstract: A biopsy needle unit includes a biopsy needle and an elastically deformable safety tube for partially covering the biopsy needle inserted to a lumen extending in a longitudinal direction. A marker is arranged on the biopsy needle at a position protruding from an end portion of the safety tube on an opposite side of a needle tip of the puncture needle when the needle tip portion is accommodated in the lumen. The safety tube has portions in which the lumen is curved at least partially with respect to the longitudinal direction so that the safety tube is elastically deformed due to contact between an inner circumferential face of the lumen and an outer circumferential face of the biopsy needle when the biopsy needle is inserted to the lumen to cause frictional resistance between the inner circumferential face of the lumen and the outer circumferential face of the biopsy needle.

Abstract: A syringe includes a barrel and a rotatable element on the barrel; for example at a proximal location along the length of the barrel. The rotatable element rotates at least partially around the barrel. When a handle is associated with the rotatable element, the barrel may rotate as the handle his held substantially stationary or the handle may be rotated while the barrel and any peripheral device secured thereto remain substantially stationary. When handles are associated with a rotatable element that may be removed from a barrel, a barrel that is disassembled from the rotatable element may be replaced with another barrel of the same or a different configuration. Methods of using a syringe with a rotatable element on a barrel thereof are also disclosed.

Abstract: A syringe includes a barrel and a rotatable element on the barrel; for example at a proximal location along the length of the barrel. The rotatable element rotates at least partially around the barrel. When a handle is associated with the rotatable element, the barrel may rotate as the handle his held substantially stationary or the handle may be rotated while the barrel and any peripheral device secured thereto remain substantially stationary. When handles are associated with a rotatable element that may be removed from a barrel, a barrel that is disassembled from the rotatable element may be replaced with another barrel of the same or a different configuration. Methods of using a syringe with a rotatable element on a barrel thereof are also disclosed.

Abstract: Provided is a pressure gauge capable of being effectively used for internal pressure measurement of a balloon catheter and capable of providing easy monitoring of a pressure value even when measuring internal pressure of an extracorporeal circulation circuit. The pressure gauge measures internal pressure of a balloon catheter used for treatment and diagnosis or pressure of a body lumen of a living body and includes a coil-shaped tube 2 to elastically deform. One end of the tube 2 is set as an open fixed end and the other end is set as a sealed free end and pressure introduced from the open fixed end can be measured based on a displacement position of the tube 2 due to the pressure.

Abstract: A biopsy needle unit includes a biopsy needle and an elastically deformable safety tube for partially covering the biopsy needle inserted to a lumen extending in a longitudinal direction. A marker is arranged on the biopsy needle at a position protruding from an end portion of the safety tube on an opposite side of a needle tip of the puncture needle when the needle tip portion is accommodated in the lumen. The safety tube has portions in which the lumen is curved at least partially with respect to the longitudinal direction so that the safety tube is elastically deformed due to contact between an inner circumferential face of the lumen and an outer circumferential face of the biopsy needle when the biopsy needle is inserted to the lumen to cause frictional resistance between the inner circumferential face of the lumen and the outer circumferential face of the biopsy needle.

Abstract: A balloon catheter provides pressure-contact to a wall of a lumen or a stent or a stent graft in the lumen without interrupting body fluid flow such as blood when the balloon is expanded in the lumen. The balloon catheter includes a single balloon arranged at a distal side of a catheter shaft, and three line-shaped portions extending outside the balloon over the entire length of the balloon along an axial direction of the catheter shaft at even intervals in a circumferential direction. The balloon is partially restricted from being expanded by the line-shaped portions and is expanded in a radial direction between the adjacent line-shaped portions to form three balloon expansion portions that are divided in the circumferential direction. Accordingly, gaps are formed between a lumen wall and outer circumferential faces of the balloon expansion portions so that blood or body fluid can be flown therethrough without being interrupted.

Abstract: A slip ring assembly for an injector is provided, where the injector includes a handle assembly coupled to a syringe barrel, and a plunger configured to rotate and slidably translate through a receptacle. The slip ring assembly includes a rotatable element disposed about the syringe barrel and configured to rotate at least partially about a circumference of the barrel, a retention groove positioned upon the syringe barrel, and a locking element including a protrusion complimentary with the retention groove and configured to engage retention groove and maintain rotatable element upon the syringe barrel.

Abstract: A syringe includes a barrel and a rotatable element on the barrel; for example at a proximal location along the length of the barrel. The rotatable element rotates at least partially around of the barrel. When a handle is associated with the rotatable element, the barrel may rotate as the handle his held substantially stationary or the handle may be rotated while the barrel and any peripheral device secured thereto remain substantially stationary. When handles are associated with a rotatable element that may be removed from a barrel, a barrel that is disassembled from the rotatable element may be replaced with another barrel of the same or a different configuration. Methods of using a syringe with a rotatable element on a barrel thereof are also disclosed.

Abstract: A blood filter (1) has a small priming volume and a high ability of trapping and removing the air bubbles. The blood filter (1) according to the present invention includes a housing (5) accommodating a blood inlet (8), a blood outlet (9), an air bubble outlet (14), and a filter element (3) disposed in the housing (5). The blood inlet (8) is preferably disposed in the vicinity of a bottom surface (7) of the housing. The housing (5) includes a spiral chamber (10) defined between an inner wall (5b) and an outer wall (5a) of the housing (5) and a center chamber (11) defined within the inner wall (5b). The spiral chamber (10) extends in a helix shape to surround the center chamber (11). Due to such a structure, even when air bubbles are introduced to the blood filter (1) through the blood inlet (8), the air bubbles are effectively separated from the blood in the spiral chamber (10). The blood filter having such a spiral chamber (10) is unlikely influenced by the blood flow rate and the amount of air bubbles.

Abstract: A blood filter is disclosed which actively removes unwanted particles from the blood without using passive elements such as a cartridge. The blood filter includes a housing having a blood inlet area for receiving blood to be filtered, a blood outlet area for providing filtered blood to a patient, and a blood return area for returning blood having unwanted particles to a reservoir. A plurality of independent blood paths extend from the inlet area to the outlet area of the housing for separate flows of blood therethrough. An array of detectors is placed adjacent the exterior of each blood path for detecting unwanted particles in the blood flowing therethrough. An array of valves is placed in operable relationship with the blood paths to close selected ones of the blood paths when unwanted particles are detected. Blood return conduits open to divert the particle-containing blood to a reservoir. Several arrays of detectors and valve combinations may be provided for redundancy.