Abstract: A pump system for an infusion system includes a linear drive (36, 36?) which minimizes the space occupied by the pump components in a portable housing (10, 10?). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14?) and lead screw (94, 94?). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a cone (116) or drive nut (116?) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). Sensors (150, 152) detect when the piston or cone is in a “home” position and in an “end” position, respectively. Optionally, a proximity sensor (170) is used to ensure that the cone and the piston (24) are abutting during dispensing. Alternatively, a clamping member (350) selectively clamps the lead screw (94?) against linear motion in at least a dispensing direction.

Abstract: A pump system for an infusion system includes a linear drive (36, 36?) which minimizes the space occupied by the pump components in a portable housing (10, 10?). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14?) and lead screw (94, 94?). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a cone (116) or drive nut (116?) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). Sensors (150, 152) detect when the piston or cone is in a “home” position and in an “end” position, respectively. Optionally, a proximity sensor (170) is used to ensure that the cone and the piston (24) are abutting during dispensing. Alternatively, a clamping member (350) selectively clamps the lead screw (94?) against linear motion in at least a dispensing direction.

Abstract: A pump system for an infusion system includes a linear drive (36, 36?) which minimizes the space occupied by the pump components in a portable housing (10, 10?). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14?) and lead screw (94, 94?). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a cone (116) or drive nut (116?) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). Sensors (150, 152) detect when the piston or cone is in a “home” position and in an “end” position, respectively. Optionally, a proximity sensor (170) is used to ensure that the cone and the piston (24) are abutting during dispensing. Alternatively, a clamping member (350) selectively clamps the lead screw (94?) against linear motion in at least a dispensing direction.

Abstract: A pump system for an infusion system includes a linear drive (36, 36?) which minimizes the space occupied by the pump components in a portable housing (10, 10?). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14?) and lead screw (94, 94?). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a drive nut (116) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). A cap (190, 190?) couples the syringe (14, 14?) to the housing and provides an outlet for the liquid to be dispensed. In one embodiment, the cap (190?) is configured to rotate relative to the housing in one direction only, during locking. Rotational movement is also used for locking the piston (24) to the drive nut (116) against relative axial movement.

Abstract: A pump system for an infusion system includes a linear drive (36, 36′) which minimizes the space occupied by the pump components in a portable housing (10, 10′). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14′) and lead screw (94, 94′). A gear box (54) connects the drive shaft and lead screw to transfer rotational movements between them. A piston driving member, such as a cone (116) or drive nut (116′) converts the rotational movement of the lead screw into linear motion of a syringe piston (24). Sensors (150, 152) detect when the piston or cone is in a “home” position and in an “end” position, respectively. Optionally, a proximity sensor (170) is used to ensure that the cone and the piston (24) are abutting during dispensing. Alternatively, a clamping member (350) selectively clamps the lead screw (94′) against linear motion in at least a dispensing direction.

Abstract: An infusion set (1, 100, 100′) is attached to the skin of a wearer by a conformable tape or patch (220, 220′). The tape is of a multilayer construction, comprising a breathable layer (226, 226′), preferably formed from a silicone elastomer or hydrocolloid, and optionally a support layer (222), such as a layer of polyester. An adhesive layer (240) is provided for attaching the tape to the wearer's skin. A second adhesive layer (234), or a mechanical means (252) attaches the tape to the infusion set.