Abstract: Trocar for instrument access to body cavities in minimally invasive surgery, the trocar comprising:—a body having a first access opening and at least one second access opening, each for inserting an instrument;—a cannula arranged with a proximal end to the body and having a distal end suitable for insertion into body cavities in minimally invasive surgery, wherein the cannula has a substantially constant out of round cross-section along is length, wherein a channel in the cannula is connected to the first access opening to provide a first passageway for an instrument and to the second access opening to provide at least one second passageway separate from said first passageway; and—a gas inlet arranged at the body and in fluid connection with the at least one passageway for inflating the body cavity with a gas, such as carbon dioxide gas.

Abstract: A Coriolis flow sensor including a loop-shaped Coriolis tube mounted in a housing with two ends lying next to one another, the ends being fixed in a fixation element, while the portion of the tube located between the ends lies free from the housing, which flow sensor includes an excitation element for causing the tube to oscillate about an excitation axis as well as a detection element for detecting displacements of portions of the tube during operation. The tube is connected through the fixation element to a balancing member, the assembly of the balancing member and the tube being resiliently arranged with respect to the housing, while the excitation element are arranged to rotate the tube and the balancing member with counter-phase about the excitation axis.

Abstract: A Coriolis flow sensor including a loop-shaped Coriolis tube mounted in a housing with two ends lying next to one another, the ends being fixed in a fixation element, while the portion of the tube located between the ends lies free from the housing, which flow sensor includes an excitation element for causing the tube to oscillate about an excitation axis as well as a detection element for detecting displacements of portions of the tube during operation.

Abstract: A Coriolis flow sensor including a loop-shaped Coriolis tube mounted in a housing with two ends lying next to one another, the ends being fixed in a fixation element, while the portion of the tube located between the ends lies free from the housing, which flow sensor includes an excitation element for causing the tube to oscillate about an excitation axis as well as a detection element for detecting displacements of portions of the tube during operation. The tube is connected through the fixation element to a balancing member, the assembly of the balancing member and the tube being resiliently arranged with respect to the housing, while the excitation element are arranged to rotate the tube and the balancing member with counter-phase about the excitation axis.

Abstract: A Coriolis flow sensor including a loop-shaped Coriolis tube mounted in a housing with two ends lying next to one another, the ends being fixed in a fixation element, while the portion of the tube located between the ends lies free from the housing, which flow sensor includes an excitation element for causing the tube to oscillate about an excitation axis as well as a detection element for detecting displacements of portions of the tube during operation.

Abstract: A transformer core includes a stack of a plurality of planar core plates of a magnetically permeable material, which plates each consist of a first and a second sub-part that together enclose at least one opening. The sub-parts can be fitted together via contact faces that are located on either side of the opening and that extend obliquely with respect to the centerline of the core plate. The invention also relates to the use of the described transformer core in a Coriolis flowmeter with the Coriolis tube extending through the opening so as to induce a current in the tube.

Abstract: A transformer core includes a stack of a plurality of planar core plates of a magnetically permeable material, which plates each consist of a first and a second sub-part that together enclose at least one opening. The sub-parts can be fitted together via contact faces that are located on either side of the opening and that extend obliquely with respect to the centerline of the core plate. The invention also relates to the use of the described transformer core in a Coriolis flowmeter with the Coriolis tube extending through the opening so as to induce a current in the tube.