Abstract: A core biopsy arrangement for taking a tissue sample from a human or animal tissue, preferably from a tumour or a suspected tumour, includes a needle holder member provided with a tissue sampling needle, a longitudinal movement element adapted to apply a longitudinal movement to the needle, wherein the movement of the needle is a reciprocating movement having a stroke length L, wherein the forward movement is faster than the retracting movement, and wherein the reciprocating movement is initiated when the distal end of the needle is subjected to a force in the longitudinal direction.

Abstract: The present invention relates to an anti-seeding arrangement (100) for invasive treatment of a human or animal body comprising an elongated hollow member (102), and a first electrode (116) of which one portion is arranged near one end of the elongated hollow member (102), said first electrode (116) being connectable to an electromagnetic field generator (110), wherein the elongated hollow member (102) is arranged to be inserted into the human or animal body, control means (106, 108) arranged to control the electromagnetic field generator (110) for delivering radio frequency bursts to the first electrode (116), and sensing means (104) to sense a physical property dependent on the insertion length of the elongated hollow member (102) in the human or animal body, and wherein the control means (106, 108) is arranged to control the operation of the electromagnetic field generator (110) in dependence of the sensed physical property.

Abstract: The present invention relates to an anti-seeding arrangement (100) for invasive treatment of a human or animal body comprising an elongated hollow member (102), and a first electrode (116) of which one portion is arranged near one end of the elongated hollow member (102), said first electrode (116) being connectable to an electromagnetic field generator (110), wherein the elongated hollow member (102) is arranged to be inserted into the human or animal body, control means (106, 108) arranged to control the electromagnetic field generator (110) for delivering radio frequency bursts to the first electrode (116), and sensing means (104) to sense a physical property dependent on the insertion length of the elongated hollow member (102) in the human or animal body, and wherein the control means (106, 108) is arranged to control the operation of the electromagnetic field generator (110) in dependence of the sensed physical property.

Abstract: Fine needle arrangement for taking a sample of cells from suspicious lesions by using fine needle aspiration (FNA) technique, including a tubular needle member (1), a storage compartment (2) enclosing a chamber, and a coupling (3) to which a connector may be attached. The chamber is configured with a gradually increasing cross-sectional area from the distal part of the chamber to the proximal part of the chamber, such that the chamber has no residual spaces where cell samples may be trapped, and that an efficient air streaming is achieved.

Abstract: A core biopsy arrangement for taking a tissue sample from a human or animal tissue, preferably from a tumour or a suspected tumour, includes a needle holder member provided with a tissue sampling needle, a longitudinal movement element adapted to apply a longitudinal movement to the needle, wherein the movement of the needle is a reciprocating movement having a stroke length L, wherein the forward movement is faster than the retracting movement, and wherein the reciprocating movement is initiated when the distal end of the needle is subjected to a force in the longitudinal direction.

Abstract: An arrangement for taking a sample of cells from a suspicious lesion or a tumor with the so called fine needle aspiration technique, provides a good penetration of tumors, especially small and/or hard fibrous tumors, and in the meantime yielding an increased amount of cells in the sample, by applying a longitudinal movement to the needle when the needle is penetrating the tumor and by applying both a rotational and a longitudinal movement to the needle when the needle is positioned inside the tumor. The arrangement is further provided with heat generating elements in order to apply a short pulse of heat to the needle in order to lower the risk for the tumor to spread.

Abstract: The present invention relates to an anti-seeding arrangement (100) for invasive treatment of a human or animal body comprising an elongated hollow member (102), and a first electrode (116) of which one portion is arranged near one end of the elongated hollow member (102), said first electrode (116) being connectable to an electromagnetic field generator (110), wherein the elongated hollow member (102) is arranged to be inserted into the human or animal body, control means (106, 108) arranged to control the electromagnetic field generator (110) for delivering radio frequency bursts to the first electrode (116), and sensing means (104) to sense a physical property dependent on the insertion length of the elongated hollow member (102) in the human or animal body, and wherein the control means (106, 108) is arranged to control the operation of the electromagnetic field generator (110) in dependence of the sensed physical property.

Abstract: Fine needle arrangement for taking a sample of cells from suspicious lesions by using fine needle aspiration (FNA) technique, including a tubular needle member (1), a storage compartment (2) enclosing a chamber, and a coupling (3) to which a connector may be attached. The chamber is configured with a gradually increasing cross-sectional area from the distal part of the chamber to the proximal part of the chamber, such that the chamber has no residual spaces where cell samples may be trapped, and that an efficient air streaming is achieved.

Abstract: An arrangement for taking a sample of cells from a suspicious lesion or a tumour with the so called fine needle aspiration technique, provides a good penetration of tumours, especially small and/or hard fibrous tumours, and in the meantime yielding an increased amount of cells in the sample, by applying a longitudinal movement to the needle when the needle is penetrating the tumour and by applying both a rotational and a longitudinal movement to the needle when the needle is positioned inside the tumour. The arrangement is further provided with heat generating elements in order to apply a short pulse of heat to the needle in order to lower the risk for the tumour to spread.

Abstract: Arrangement for treatment of a tumour localized inside a body, comprising a needle that is intended to be inserted into said tumour, a ground electrode that is intended to be applied to the outer surface of the body, and a radio frequency generating device that is intended to apply radio frequency energy between the needle and the ground electrode such that heat is generated in tissue surrounding the needle. The arrangement further comprises novel temperature measurement means and means that provides for a better penetration of the needle into the tumour in comparison with prior art RFA arrangements.

Abstract: An arrangement for sinus evacuation and for taking a sample of bone marrow during a bone marrow aspiration procedure as well as a bone marrow biopsy procedure. By applying a longitudinal movement to the needle when the needle is penetrating the bone the penetration force is reduced which lower the risk of penetrating the posterior cortex or the second sinus wall. The arrangement further includes a stopping element that prevents the needle to penetrate deeper than to a predetermined depth. The arrangement further includes longitudinal movement a stopping element that provides for an active break of the longitudinal movement of the needle when the needle has penetrated down to the predetermined depth.

Abstract: An apparatus for comminuting concretions in a patient's body includes a liquid filled focusing chamber, defined by a reflector (2) with an inner wall having the form of an open revolution ellipsoid, which has its open end closed by a bellows (4,6) intended for placing against the patient's body. A spark gap (8) is disposed at the first focus (F.sub.1) of the ellipsoid reflector for generating a shock wave intended to be focused at the second focal area (F.sub.2) of the ellipsoid. The reflector wall thickness is formed such that resonance of the waves reflected on the inside and outside of the ellipsoid reflector occurs in said second focal area at a predetermined frequency.

Abstract: Apparatus for triggering shock waves for therapeutic purposes, and generated with the aid of spark discharge in a liquid includes a signal analyzer disposed for receiving the ECG signal from a patient, a pulse generator being connected to this analyzer for sending a trigger signal shortly after the occurrence of the R peak in the ECG signal. An electromagnetically manoeuvreable, moving auxiliary electrode (14) is disposed for motion towards or into a fixed electrode gap (8, 10) in response to the trigger signal for connecting the spark gap (4, 6) to high voltage by making the electrode gap conductive.

Abstract: Device in ultrasonic knives of the kind including a transducer for converting electrical energy at ultrasonic frequency to a mechanical oscillation. An amplitude transformer (2) forms the tip of the knife. The length of the ultrasonic transformer is in the order of magnitude 0.72 times the wavelength of the ultrasonic frequency. The ultrasonic transformer is an integral unit comprising a cylindrical portion (40), an integral portion (41) which is the curve of a wave function of the fourth order Fourier form, and a tip portion (42) which is conical, whereby the maximum stroke of the longitudinal oscillation mode of the knife is a desired resonance frequency, this resonance frequency being greatly separated, in the order of magnitude 20% with relation to the resonance frequency, from resonance frequency pertaining to harmonics of the desired resonance frequency in the longitudinal oscillation mode, and resonance frequency pertaining to oscillations in the transverse mode.

Abstract: A curved ultrasonic knife consisting of a transducer unit (5) and an amplitude-amplifying horn connected directly thereto, the knife being shaped to imbue the tip (43) of the horn with, to a great extent, purely longitudinal oscillation. The transducer unit includes a piezoelectric unit axially clamped in the transducer unit (5). A resonance rod (28) located between the piezoelectric unit and the horn (2) is bent to give a deflection of 16.degree., for example.

Abstract: The present invention relates to an equipment for use in surgical operations to remove tissue, and comprises an ultrasonic knife having a tip intended to be brought into contact with the tissue, a transducer unit causing said tip portion to oscillate longitudinally and a frequency generator to drive the transducer unit, the parts of the ultrasonic knife which are in contact with the patient being galvanically isolated from the other equipment of the knife, as well as means for temporarily supplying thermal energy to the tissue from the tip portion of the ultrasonic knife in order to achieve hemostasis by means of coagulation.