摘要:
A glucose monitoring system continuously measures the glucose concentration in a patient's blood, provides an indication of the rate of change of such concentration, and determines whether the measured concentration and rate of change are within certain preset limits. If not, an audible and/or visual alarm signal is generated. The glucose monitoring system includes a glucose sensor adapted to be inserted into the venous system of the patient, where it responds to blood glucose and produces sensor signals related to the glucose concentration. The sensor signals are delivered through a suitable interconnect cable to a glucose monitor. In one embodiment, the interconnect cable includes a contactless connector that electrically isolates the glucose sensor from the monitor, and reduces the number of conductors required to interface with a plurality of sensors. The glucose monitor interprets the sensor signals by applying a previously determined calibration to quantitatively determine the blood glucose value. The blood glucose value thus determined is then processed in order to determine the rate of change, is stored (to create a history or record), and may also be displayed in large, easy-to-read numerals. Rate of change information (trend) may also be numerically or graphically displayed.
摘要:
A replaceable catheter system provides a way to replace an implantable sensor, electrode system, and/or fluid delivery/receiving system. The replaceable catheter includes an elongated tubular catheter holder for surgical implantation in a patient. The catheter holder has an open neck at a proximal end thereof just under the patient's skin. A distal end of the catheter holder extends into a body cavity in the patient. A manually replaceable catheter is inserted through a self-sealing barrier over the open end of the catheter holder. A distal end of the replaceable catheter extends longitudinally through the catheter holder and beyond the distal end thereof to expose one or more physiological/chemical sensors, tissues stimulating electrodes, and/or a fluid delivery/receiving tube carried by or formed within the replaceable catheter. The sensors and/or electrodes are electrically connected to an electronic package including a signal coupler adjacent a signal coupler carried by the catheter holder. The signal coupler is connected to an implanted control device whereby electrical signals are transmitted to and/or from the sensor and/or electrode from the control device. The control device may include, or be connected to, an implantable fluid dispenser/analyzer for dispensing or analyzing fluid via a conduit connected through the catheter holder to an opening in the replaceable catheter.
摘要:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package that is suitable for implantation in living tissue, for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.
摘要:
Apparatus having a percutaneous cartridge port with an exterior having a porous region configured to promote soft tissue ingrowth and an implantable operative portion, including a fluid transfer device, operably connected to the percutaneous cartridge port, and methods that may be associated with an apparatus having a percutaneous cartridge port.
摘要:
A method and apparatus for reducing the incident of infection proximate to an exit site where a prosthesis fastener, e.g., a bone screw, percutaneously penetrates a patient's skin/soft tissue. Infection reduction is achieved in accordance with the invention by growing a tissue integrating seal around the fastener proximate to the exit site.
摘要:
An implantable stimulator includes a tube assembly that is configured to house a number of components that are configured to apply at least one stimulus to at least one stimulation site within a patient. The tube assembly has a shape that allows the stimulator to be implanted within said patient in a pre-determined orientation. Exemplary methods of stimulating a stimulation site within a patient include applying an electrical stimulation current to a stimulation site via one or more electrodes extending along one or more sides of a stimulator. The stimulator has a shape allowing the stimulator to be implanted within the patient in a pre-determined orientation.
摘要:
A percutaneous cochlear implant system includes a cochlear stimulator configured to be coupled to an electrode lead, the electrode lead comprising a plurality of electrodes configured to be in communication with a plurality of stimulation sites within a cochlear region of a patient, a sound processor communicatively coupled to the cochlear stimulator and configured to control the cochlear stimulator to generate and apply electrical stimuli representative of an audio signal to at least one of the stimulation sites via at least one of the electrodes, a power source configured to provide power to at least one of the cochlear stimulator and the sound processor, and a percutaneous port configured to be percutaneously implanted within a head of the patient. The percutaneous port may be configured to house at least one of the power source, sound processor, and cochlear stimulator. Additionally or alternatively, the percutaneous port is configured to facilitate programming, recharging of a rechargeable power source (e.g., implanted battery), control of, and/or access to at least one of the power source, sound processor, and cochlear stimulator.
摘要:
Catheter systems and methods for facilitating the delivery of a therapeutic agent directly to the interior of a body organ, and/or the extraction of material from said organ. The catheter distal end is placed within the body organ to be treated. The catheter may carry a fixation device near the catheter distal end. When implanted, the fixation device retains the catheter distal end in the organ despite normal patient activity. The fixation device may include porous material to promote soft tissue ingrowth for anchoring the catheter distal end within the organ.
摘要:
The invention is directed to a method of bonding a hermetically sealed electronics package to an electrode or a flexible circuit and the resulting electronics package that is suitable for implantation in living tissue, for a retinal or cortical electrode array to enable restoration of sight to certain non-sighted individuals. The hermetically sealed electronics package is directly bonded to the flex circuit or electrode by electroplating a biocompatible material, such as platinum or gold, effectively forming a plated rivet-shaped connection, which bonds the flex circuit to the electronics package. The resulting electronic device is biocompatible and is suitable for long-term implantation in living tissue.
摘要:
A fully implantable hearing aid system comprised of an implantable sound generator module and an implantable sound receiver module connected by an implantable electric cable. The system includes: a) a sound generator module configured for implantation in subcutaneous tissue to place an output electric/acoustic (E/A) transducer, e.g., a speaker, immediately adjacent to, or preferably, extending percutaneously into, a patient's outer ear canal; b) a sound receiver module configured for implantation proximate to a patient's pinna to place an input acoustic/electric (AJE) transducer, e.g., a microphone, so that it is acoustically isolated from the E/A transducer; and c) an electric cable configured for implantation in subcutaneous tissue for directly electrically connecting said sound receiver module and said sound generator module.