摘要:
An arteriovenous graft system is described. The arteriovenous graft system includes an arteriovenous graft that is well suited for use during hemodialysis. In order to minimize or prevent arterial steal, at least one valve device is positioned at the arterial end of the arteriovenous graft. In one embodiment, for instance, the arteriovenous graft system includes a first valve device positioned at the arterial end and a second valve device positioned at the venous end. In one embodiment, the valve devices may include an inflatable balloon that, when inflated, constricts and closes off the arteriovenous graft. By minimizing or preventing arterial steal, other complications associated with arteriovenous grafts are also avoided. For instance, the present invention is also well suited to preventing arteriovenous graft thrombosis, eliminating dialysis needle hole bleeding, and eliminating or minimizing arteriovenous graft pseudoaneurism formation.
摘要:
A device implantable into an eye of a patient for treatment of glaucoma. The device has an implantable sensor configured to measure at least one characteristic of the eye. The implantable sensor is sized for implantation into the eye. The device also has an implantable processor coupled to the sensor and configured to receive the measurement of the at least one characteristic of the eye and generate a signal based on the received measurement. Additionally, the device has an implantable actuator coupled to the processor and operable to release a dosage of a therapeutic agent into the eye in response to the signal from the implantable processor.
摘要:
Counterpulsation methods and systems for assisting the heart of a patient involve, for example, coordinating the operation of a pulsatile pump to suction blood from an artery through a first conduit while the heart is in systole and expel the blood into the first conduit and the artery while the heart is in diastole.
摘要:
An assembly comprises a drug delivery device and a monitoring device adapted to detect an action taking place in the drug delivery device. The drug delivery device comprises a main portion having a drug expelling mechanism for expelling drug from a reservoir through an outlet, a housing in which at least a portion of the expelling mechanism is arranged, and coupling means for a cover. The cover is adapted to cover the outlet when mounted on the main portion. The monitoring device comprises a housing portion, means for detecting an action taking place in the drug delivery device, and coupling means adapted to engage the coupling means on the main portion. By this arrangement the monitoring device can be placed in a pre-determined position relative to the main portion when the coupling means engage each other, this allowing efficient transmission of information between the monitoring device and the main portion.
摘要:
A permanently implanted insulin pump or combined insulin and glucagon pumps, controlled by a valve that expands and contracts due to osmosis as a result of changes in the blood sugar level. The valve is constructed from tissues harvested or grown from the patient's body tissues to prevent rejection, infection or thrombosis. It operates the pump(s) though a blood vessel via a magnetic strip within the valve tissue and a reed switch located outside the blood vessel. The pump battery is recharged by electromagnetic induction in response to low battery warnings. Glucagon and/or insulin are refilled in response to low-level warning indicators, using self-sealing septa located near to the surface of the skin.
摘要:
An at least partly implantable system for injecting a substance into a patient's body, in particular a penis erection stimulation system comprises one or more infusion needles disposed within and implanted along with one or more housings adjacent the patient's left and right corpora cavernosa. A reservoir and a pump are also implanted inside the patient's body to supply the infusion needle with infusion liquid. A drive unit also adapted for implantation inside the patient's body is arranged for advancing and retracting the tip end of the infusion needle such that it penetrates the housing in at least one penetration area, preferably in two different penetration areas either simultaneously or in immediate time succession, thereby injecting drugs along with the infusion liquid into the patient's body for stimulating penis erection. The drive unit is provided for implantation remote from the injection area and comprises a mechanical drive element for transmitting kinetic energy from a remote location within the patient's body to the at least one infusion needle.
摘要:
A penis erection stimulation system comprises one or more infusion needles, the tip ends of which are disposed within and implanted along with at least one first housing adjacent the patient's left and right corpora cavernosa. The respective other end or ends of the infusion needles are disposed and implanted along with at least one second housing remote from the first housing. A reservoir and a pump are also implanted inside the patient's body to supply the infusion needle with infusion liquid. A drive unit also adapted for implantation inside the patient's body is arranged for advancing and retracting the infusion needle such that its tip end penetrates the at least one first housing's outer wall at least in two different penetration areas either simultaneously or in immediate time succession, thereby injecting drugs into the patient's body for stimulating penis erection.
摘要:
A penis erection stimulation system comprises one or more infusion needles disposed within and implanted along with one or more housings adjacent the patient's left and right corpora cavernosa. A reservoir and a pump are also implanted inside the patient's body to supply the infusion needle with infusion liquid. A drive unit also adapted for implantation inside the patient's body is arranged for advancing and retracting the tip end of the infusion needle such that it penetrates the housing at least in two different penetration areas either simultaneously or in immediate time succession, thereby injecting drugs along with the infusion liquid into the patient's body for stimulating penis erection. The drive unit is configured to laterally displace the tip end of at least one infusion needle in at least two different lateral directions to different penetration sites within said at least one penetration area.
摘要:
A penis erection stimulation system comprises an infusion device (11) adapted for implantation inside the patient's body, at least one reservoir (R1, R2) adapted for implantation inside the patient's body in fluid connection with the infusion device to supply to the infusion device a substance to be injected into the patient's body, and a cooling device implantable along with the reservoir for keeping the content within at least one compartment of the reservoir at a temperature below 37° C. The reservoir preferably comprises at least one first compartment accommodating or adapted to accommodate a first substance and at least one second compartment accommodating or adapted to accommodate as a second substance a drug for stimulating penis erection, wherein the at least one second compartment is cooled by means of the cooling device. The infusion device preferably comprises one or more infusion needles disposed within and implanted along with one or more housings adjacent the patient's left and right corpora cavernosa. A pump may be implanted inside the patient's body to supply the infusion needle with infusion liquid. A drive unit also adapted for implantation inside the patient's body may be arranged for advancing and retracting the tip end of the infusion needle such that it penetrates the housing at least in two different penetration areas either simultaneously or in immediate time succession, thereby injecting drugs along with the infusion liquid into the patient's body for stimulating penis erection.
摘要:
A magnetically controlled pump is implanted into the cerebrospinal fluid of a patient and delivers a plurality of medicating agents at a controlled rate corresponding to the specific needs of the patient. The current invention comprises a flexible double walled lumen, intratumoral catheter which will be implanted. Spinal fluid drawn from the patient is analyzed. Medication is delivered on a continuous metronomic basis into the CSF via an internalized pump. CSF is removed and analyzed for VEGF and other cytokines via spectrophotometer analysis or a lab on a chip. The operation of the apparatus and hence the treatment is remotely controlled based on these measurements and displayed through an external controller.