126 results about "Subcutaneous implant" patented technology

A hypodermic implant device, comprising a barrel; an upper piston segment engaged with an inner wall of the barrel; an axially aligned needle extendably distally out of the barrel for insertion into an object when the upper piston segment is moved distally within the body; a lower piston segment push rod in alignment with the needle, so that upon distal movement of the lower piston segment, the push rod moves distally through the needle expelling a releasable implant housed in the needle; and a means for retraction of the needle into a needle receptacle in the barrel.

A subcutaneously implantable power supply is a device for powering implantable medical devices. The device has one or more thin photovoltaic cells contained in a case formed of a lamination of a plurality of thin plastic layers. Each layer is translucent in the area covering said cell, such that the power supply is sufficiently flexible to conform to body contours. The device is lightweight, flexible, has improved sealability, and has improved internal battery longevity.

Improved assemblies, systems, and methods provide an implantable pulse generator for prosthetic or therapeutic stimulation of muscles, nerves, or central nervous system tissue, or any combination. The implantable pulse generator is sized and configured to be implanted subcutaneously in a tissue region. The implantable pulse generator includes an electrically conductive laser welded titanium case. Control circuitry is located within the case, and includes a primary cell or rechargeable power source, a receive coil for receiving an RF magnetic field to recharge the rechargeable power source, and a microcontroller for control of the implantable pulse generator. Improved assemblies, systems, and methods also provide a stimulation system for prosthetic or therapeutic stimulation of muscles, nerves, or central nervous system tissue, or any combination. The stimulation system provides at least one electrically conductive surface, a lead connected to the electrically conductive surface, and an implantable pulse generator electrically connected to the lead.

A non-abusable, non-inflammatory, biocompatible, non-biodegradable, subcutaneous, polymeric implant for the prolonged, controlled release of hydromorphone with near zero-order kinetics is described. Methods of alleviating cancer pain and treating opioid drug addiction with the implant are also described.

A subcutaneously implantable lead includes a coil disposed along a portion of the lead, and a lead tip coupled to a distal end of the lead. The lead tip includes at least one component that is movable relative to the distal end of the lead and configured to anchor the lead tip in subcutaneous tissue.

A wireless system for monitoring a patient's brain tissue including (1) a plurality of electrodes abutting brain tissue, (2) main circuitry outside the patient's body to transmit power at radio frequencies and send/receive data using infrared energy, and (3) subcutaneously-implanted remote circuitry connected to the electrodes and configured to (a) receive transmitted RF power, (b) capture and digitize EEG signals from the electrodes, and (c) send/receive data to/from the main circuitry using IR energy, including sending digitized EEG signals from each electrode to capture the full bandwidth of each EEG signal. The system preferably includes circuitry to measure the electrical impedance of each electrode for real-time monitoring of the condition of the electrode/tissue interfaces to enhance interpretation of captured EEG signals.

A hair implant includes at least two strands including at least one of mammalian hair and synthetic hair; and an anchor, which: (a) includes silicone, (b) is configured for subcutaneous implantation, (c) includes a fracture line configured to facilitate fracturing of the anchor along the fracture line for ease of removal of the implant after subcutaneous implantation, and (d) is configured to provide a scaffold for collagen growth after subcutaneous implantation, wherein at least one of the at least two strands is joined to the anchor on one side of the fracture line and at least one of the at least two strands is joined to the anchor on an opposite side of the fracture line such that each fragment formed by fracturing the implant includes at least one of the at least two strands. Looped implants, a hair restoration method and an implant manufacturing method are also disclosed.

Subcutaneous implants having limited initial release of the active principle and subsequent linearly varying extended release thereof consisting of: a core (i) comprising an active principle dispersed in a polymeric matrix of polylactic-glycolic acid (PLGA) copolymer, a coating in film form (ii), comprising as the main component a lactic-glycolic acid copolymer, and the relative processes for preparing said implants.

A subcutaneous implantable vascular access port reduces the risk of infection by creating a larger surface area for needle access with multiple palpable windows. These multiple needle access sites inhibit skin breakdown and thus reducing the risk of infection. This dual lumen port catheter is designed for both high pressure and high flow fluid volume blood flow rates. The port is suitable for dialysis, electrophoresis and a variety of other medical treatment functions. The interchangeable replaceable parts of the port assembly allow easier maintenance and more precise placement positions within the patient.

The invention relates to the use of a thermal reversible gel, such as a copolymer composition, as a biological filler or implant. The gel has a semi-solid form at body temperature, but upon cooling to a temperature below a threshold level, the gel is liquefied and can be re-shaped, re-sized, manipulated or removed from the body. The gel may be used as a subcutaneous implant, a biological filler, joint or tissue spacer, for wrinkle filling or other cosmetic implants, as a soft-tissue replacement for reconstructive surgery, or as a barrier within the lumen of a biological structure, such as a blood vessel. The implant may be used to provide reversible birth control by providing, for example, a reversible barrier to the cervix or a reversible blockage of the lumen of the vas deferens.

The invention relates to hydrogel nanoparticles used as an injectable subcutaneous implant agent, which can effectively solves the problem of fulfilling an aim of realizing tumor treatment by locally injecting the hydrogel nanoparticles beside a subcutaneous tumor, changing the hydrogel nanoparticles into a gel and slowly releasing nanoparticles in vivo. The hydrogel nanoparticles are prepared from hydrogel solution and 2-methoxyl estradiol liposome nanoparticle powder or solid liposome nanoparticle powder by a method which comprises the following steps of: adding the 2-methoxyl estradiol liposome nanoparticle powder or the solid liposome nanoparticle powder into the hydrogel solution; and uniformly mixing to form the hydrogel nanoparticles which can be used as an injectable subcutaneous implant agent, wherein 100mg of the 2-methoxyl estradiol liposome nanoparticle powder is added into every 1ml of the hydrogel solution. The injectable hydrogel implant agent of the invention can be used for treating subcutaneous tumors such as breast cancer and the like, keep an effective medicament concentration in a local target site, can realize sustained release and controlled release, can avoid medicament resistance caused by long-term medication, simultaneously improve a curative effect and reduce dosage, reduce toxic and side effects on a whole body, and also can prevent lymphatic metastasis of the tumors such as the breast cancer and the like.

A system for reducing subcutaneous migration of an implantable device or housing relative to surrounding soft tissue. For instance, the implantable housing may support a microphone diaphragm. The system includes at least one securement member having at least one aperture extending therethrough that may selectively receive one of a soft tissue securement device (e.g., soft tissue suture) and soft tissue growth therethrough. The securement member is at least one of interconnected to and disposable over at least a portion of the housing and at least one of extends away from and is selectively extendable away from a periphery of the housing. In one arrangement, at least one mesh member may be optionally included with the system that may allow for tissue growth to enhance securement of the implanted device relative to the soft tissue.

The present invention relates to subcutaneously implanted graft-port systems, devices and methods for establishing access to the vascular system of a patient requiring multiple blood treatments over an extended period of time. The systems, devices and methods disclosed herein reduce miscannulation, promote intra-session hemostasis, and decrease the incidence of bacteremia and sepsis among other improvements and advantages. The devices include a port with a flattened plateau-like surface for receiving an access tube. The flat surface may include a tactile or visual guide to assist with placement of the access tube into the tapered seat. Optional valve mechanisms reduce the size and form factor of the implantable graft-port device and seals the conduit of the port closed to physiologic pressures until the valve is opened upon percutaneous insertion of the access tube. The access tube does not pass into the conduit. A mismatch fit between the access tube and tapered seat causes a decrease in the cross-sectional sealing area, a reduction in the overall device size, and an increase in blood flow during treatment. Lock solutions to prevent fowling and infection are also disclosed.