Devices, methods and systems for transmitting signals through a device located in a blood vessel of an animal, for stimulating and/or sensing activity of media proximal to the device, wherein the media includes tissue and/or fluid.

A reader for medical implants includes an antenna and a transceiver chip connected with the antenna. The transceiver chip includes a power amplifier and a resistor. The power amplifier is connected with a reference voltage through the resistor and configured to produce a first communication signal with high frequency and transmit the first communication signal to the medical implants through the antenna. The medical implant receives the first communication signal and produces a second communication signal according to variation of parameters of the medical implant. The antenna is configured to receive the second communication signal. The power amplifier is further configured to vary a DC current which flows through the resistor according to the second communication signal and read signals of the medical implant according to variation of the DC current. The power amplifier is further configured to modulate the second communication signal into a low frequency signal.

An artificial valve for implantation in a mammal body, in or adjacent to a mammal blood vessel, the artificial valve comprising a casing and a closing mechanism. The closing mechanism comprises a curved part with a groove in it, said groove comprising parts which are alternatingly slanted with respect to each other, and the closing mechanism also comprises at least one pin arranged on one of the moving parts, said pin being arranged to run in said groove, with the moving part being caused to move as a result of the pin's movement in the groove.

The present invention relates to a filtering device for removing particles from a bodily fluid of a patient, the filtering device being implantable in the patient's body. The device has a tube forming a main fluid passageway for bodily fluid, through which the bodily fluid of the patient passes when the tube is implanted in the patient, a filter connected to the tube and a filter cleaning device for cleaning the filter by moving particles collected by the filter out of the fluid passageway, wherein the filter cleaning device is adapted to replace the first filter in the fluid passageway with a second filter, thereby moving the particles collected by the first filter out of the fluid passageway.

Devices that include an intraocular pressure sensor and are also adapted to function as a capsular tension ring. The devices include an arcuate body, optionally with first and second free ends, the arcuate body comprising an arcuate antenna and an elastomeric coating layer disposed on the arcuate antenna, and an electronic module adapted to sense intraocular pressure.

A control assembly for implantation in a patient comprises a first unit adapted for subcutaneous implantation at a first side of a body tissue of said patient, a second unit adapted for implantation in a body cavity of said patient at a second side of said body tissue, wherein at least one of the first and the second unit is adapted to control an implanted powered medical device, and an interconnecting device adapted for mechanical interconnection of the first and second units to keep the assembly in place by the body tissue, the interconnecting device having a cross-sectional area which is smaller than the cross-sectional area of the first unit and the second unit in a plane parallel to the extension of the body tissue.

An apparatus configured to control transmission of wireless energy supplied to an electrically operable medical device adapted to be implanted in a mammal patient is provided. The apparatus comprises an external energy source adapted to be located outside the mammal patient and comprising an external control unit, the external energy source being adapted to transmit wireless energy, and an internal energy receiver located inside the patient and comprising an internal control unit, the internal energy receiver being adapted to receive the wireless energy, the internal energy receiver being configured to directly or indirectly supply wirelessly received energy to the electrically operable medical device, and a control unit comprising the internal control unit or the external control unit, wherein the electrically operable medical device is adapted to transfer control information to the control unit, the control information being related to an energy adapted for operating the medical device and said control information being adapted to be used to control the receipt of energy.

An operable implant adapted to be implanted in the body of a patient. The operable implant comprising an operation device and a body engaging portion, the operation device comprises an electrical motor comprising a static part comprising a plurality of coils and a movable part comprising a plurality of magnets, such that sequential energizing of said coils magnetically propels the magnets and thus propels the movable part. The operation device further comprises an enclosure adapted to hermetically enclose the coils of the static part, such that a seal is created between the static part and the propelled moving part with the included magnets, such that the coils of the static part are sealed from the bodily fluids, when implanted.

The present invention relates to a reflux disease treatment apparatus, comprising an implantable movement restriction device with an elongated shape that maintains cardia in the correct position and an implantable stimulation device adapted to engage with the cardia sphincter of a patient. The movement has proximal and a distal end, wherein the distal end is adapted to stabilize and hold the distal end. The invention further comprises a control device for controlling the stimulation device to stimulate the cardia sphincter. The distal end can be further adapted to treat obesity, for example by stretching the wall of the stomach or filling out a volume of the stomach.

An apparatus for treating obesity and reflux disease of an obese patient has a volume filling device to be invaginated by a stomach wall portion with the outer surface of the volume filling device resting against the stomach wall, such that the volume of the food cavity is reduced in size by a volume substantially exceeding the volume of the volume filling device. An implantable movement restriction device to be invaginated by the stomach fundus wall has an outer surface to be rested against the stomach wall in a position between the patient's diaphragm and the lower part of the invaginated stomach fundus wall, such that movement of the cardiac notch of the patient's stomach towards the patient's diaphragm is restricted, to thereby prevent the cardia from sliding through the patient's diaphragm opening into the patient's thorax.