A61L31/14

COMPOSITE POSITIVE AND NEGATIVE POISSON'S RATIO MATERIALS FOR MEDICAL DEVICES
20230058045 · 2023-02-23 ·

A stent for insertion into a vessel of a patient includes an inner tube comprising a positive Poisson's ratio (PPR) material and defining a lumen extending along a longitudinal axis of the stent; and an outer tube comprising a negative Poisson's ratio (NPR) foam material and disposed around an entirety of the inner tube, the outer tube extending along the longitudinal axis of the stent. The stent is configured to exhibit an auxetic behavior in response to a deformation of the stent. An outer surface of the second portion is configured to apply a pressure to an inner surface of the vessel when the stent is implanted into the vessel and the deformation is removed.

COMPOSITE POSITIVE AND NEGATIVE POISSON'S RATIO MATERIALS FOR MEDICAL DEVICES
20230058045 · 2023-02-23 ·

A stent for insertion into a vessel of a patient includes an inner tube comprising a positive Poisson's ratio (PPR) material and defining a lumen extending along a longitudinal axis of the stent; and an outer tube comprising a negative Poisson's ratio (NPR) foam material and disposed around an entirety of the inner tube, the outer tube extending along the longitudinal axis of the stent. The stent is configured to exhibit an auxetic behavior in response to a deformation of the stent. An outer surface of the second portion is configured to apply a pressure to an inner surface of the vessel when the stent is implanted into the vessel and the deformation is removed.

High concentrated protein compositions for preventing tissue adhesion

Disclosed herein is an anti-adhesion kit comprised of: (i) a fibrinogen solution component comprising: fibrinogen at a concentration of about 5 to 25 mg/ml; and free calcium ions at a concentration ranging from 0.1 μM to 1 mM; and (ii) a thrombin component containing thrombin. Further disclosed is an anti-adhesion kit comprised of: (i) a fibrinogen solution component containing fibrinogen at a concentration of 8% to 25% of total protein by weight, and optionally free calcium ions at a concentration ranging from 0.1 μM to 1 mM; wherein a total protein concentration ranges from about 80 to 120 mg/ml; and (ii) a thrombin component containing thrombin. Methods of using the kits e.g., to provide anti-adhesion curable compositions are also disclosed.

Self-expanding devices and methods therefor

Described here are delivery devices for delivering one or more implants to the body, and methods of using. The delivery devices may deliver implants to a variety of locations within the body, for a number of different uses. In some variations, the delivery devices have a cannula with one or more curved sections. In some variations, a pusher may be used to release one or more implants from the cannula. In some variations, one or more of the released implants may be a self-expanding device. Methods of delivering implants to one or more sinus cavities are also described here.

Systems and methods for forming materials in situ within a medical device

A method for forming a material in an in situ medical device by initiating polymerization of water soluble polymer precursors in an aqueous solution during or after transport of the polymerizable solution from its storage container to a space inside the in situ medical device is described. The stored aqueous solution with water soluble precursors lacks a free radical initiator which, in a powder form, is introduced into the aqueous solution during or after its transport into the space inside the in situ medical device. This storage and delivery system provides greater stability to the stored aqueous solution, allowing it to be stored at ambient temperature and providing extended shelf life over the solutions used in existing in situ polymerization systems. The flexibility to store and deliver/transport only one aqueous solution, instead of requiring the use of two different solutions, is also a benefit.

Systems and methods for forming materials in situ within a medical device

A method for forming a material in an in situ medical device by initiating polymerization of water soluble polymer precursors in an aqueous solution during or after transport of the polymerizable solution from its storage container to a space inside the in situ medical device is described. The stored aqueous solution with water soluble precursors lacks a free radical initiator which, in a powder form, is introduced into the aqueous solution during or after its transport into the space inside the in situ medical device. This storage and delivery system provides greater stability to the stored aqueous solution, allowing it to be stored at ambient temperature and providing extended shelf life over the solutions used in existing in situ polymerization systems. The flexibility to store and deliver/transport only one aqueous solution, instead of requiring the use of two different solutions, is also a benefit.

Woven or braided tubular metal construct

Multi-filament microcables are used in place of the traditional monofilament wires as the constituent elements of a woven or braided band. This enhances the function and manufacturability of such bands for various applications, such as orthopaedic applications including sternotomy closures.

Woven or braided tubular metal construct

Multi-filament microcables are used in place of the traditional monofilament wires as the constituent elements of a woven or braided band. This enhances the function and manufacturability of such bands for various applications, such as orthopaedic applications including sternotomy closures.

Molded parts with thermoplastic cellulose biopolymer compositions having oriented fibers for medical devices and implants

A longitudinal extending body with oriented fibers comprised of an organic compound, preferably cellulose fibers, with a hydrophilic and hydrophobic polymer having absorbable and non res sorbable qualities in the body, with an internal construction to promote cell growth. The longitudinal body has at least one wall having oriented fiber to include cellulose fiber extending the length of said body. This extending body has a surface that is smooth to the touch for additional processing methods such as machining, compression molding and 3 D printing.

Implantable intraocular pressure sensors and methods of use

Intraocular pressure sensors, systems, and methods of use. Implantable intraocular pressure sensing devices that are hermetically sealed and adapted to wirelessly communicate with an external device. The implantable devices can include a hermetically sealed housing, the hermetically sealed housing including therein: an antenna in electrical communication with a rechargeable power source, the rechargeable power source in electrical communication with an ASIC, and the ASIC in electrical communication with a pressure sensor.