Patent application number | Description | Published |
20090248141 | Shape Memory Polymer Medical Devices - Medical devices for in vivo medical applications are disclosed. The medical devices are constructed of shape memory polymer (SMP) materials capable of assuming a memory shape at physiological temperatures. These medical devices may be used in surgical procedures and in both vascular and non-vascular applications. These SMP medical devices have a post-implantation memory shape that is substantially identical to or slightly larger than the insertion site to adapt to vessel growth or size changes. SMP medical devices may be formed as stents or occlusion devices (i.e., plugs) having a number of different structural features. The SMP medical devices may be formed from a first monomer and a second cross-linking monomer, wherein the weight percentages of the first and second monomers are selected by performing an iterative function to reach a predetermined glass transition temperature (T | 10-01-2009 |
20100152839 | Shape Memory Polymer Prosthetic Medical Device - A prosthetic medical device is formed by the combination of a biological tissue a shape memory polymer structure. The biological tissue provides an in-situ physiological function of the device. The shape memory polymer provides a capability for minimizing the device profile during insertion and then deploying after placement into a memory shape that achieves suitable mechanical structure and stability within an anatomical lumen or cavity. This configuration may be applied to form various prosthetic devices including aortic, mitral, and tricuspid valves in the heart; venous valves; anti-reflux valves for the lower esophageal sphincter; and other biological valve structures. Alternatively, an entirely non-biologic implementation using only shape memory polymer-based structures may be used as a prosthetic valve device. | 06-17-2010 |
20100192959 | SHAPE MEMORY POLYMER-BASED TRANSCERVICAL DEVICE FOR PERMANENT OR TEMPORARY STERILIZATION - Transcervical contraceptive devices (TCDs) are disclosed. The TCDs are constructed of shape memory polymer (SMP) materials capable of assuming a memory shape at physiological temperatures. These SMPTCDs ( | 08-05-2010 |
20110144227 | THIOL-VINYL AND THIOL-YNE SYSTEMS FOR SHAPE MEMORY POLYMERS - A variety of biomedical devices are provided which include thiol-ene or thiol-yne shape memory polymers. The biomedical devices of the invention are capable of exhibiting shape memory behavior at physiological temperatures and may be used in surgical procedures. Methods of making the devices of the invention are also provided. | 06-16-2011 |
20120046687 | Vascular Occlusion Devices - Shape memory materials (SMM) are formed as coil-shaped vascular occlusion devices upon deployment. Shape memory polymer (SMP) materials are tailored through formulation for specific mechanical behavior of the coils. Concurrent coil diameter changes enhance the relative change in stiffness along the length of the coil. Interconnecting structures ( | 02-23-2012 |
20120116504 | Reliably Retained Shape Memory Ophthalmological Implants - An implantable ophthalmological device ( | 05-10-2012 |
20120203160 | IMPLANTS FOR REDUCING INTRAOCULAR PRESSURE - The present invention provides ocular implants adapted to reside in Schlemm's canal for reducing intraocular pressure of an eye and methods for using the same. In some embodiments the ocular implants comprise a thin rod adapted and configured to extend in a curved volume in Schlemm's canal. The thin rod comprises a plurality of wave-shaped segments such that a sufficient number and amount of wave-shaped segments extend to the inner wall of the trabecular meshwork and to the outer wall of Schlemm's canal thereby keeping Schlemm's canal open. | 08-09-2012 |
20120232648 | IMPLANTATION OF SHAPE MEMORY POLYMER INTRAOCULAR DEVICES - A shape memory polymer (SMP) intraocular lens may have a refractive index above 1.45, a Tg between 10° C. and 60° C., inclusive, de minimis or an absence of glistening, and substantially 100% transmissivity of light in the visible spectrum. The intraocular lens is then rolled at a temperature above Tg of the SMP material. The intraocular device is radially compressed within a die to a diameter of less than or equal to 1.8 mm while maintaining the temperature above Tg. The compressed intraocular lens device may be inserted through an incision less than 2 mm wide in a cornea or sclera or other anatomical structure. The lens can be inserted into the capsular bag, the ciliary sulcus, or other cavity through the incision. The SMP can substantially achieve refractive index values of greater than or equal to 1.45. | 09-13-2012 |
20120232651 | SHAPE MEMORY POLYMER INTRAOCULAR LENSES - A shape memory polymer (SMP) intraocular lens may have a refractive index above 1.45, a Tg between 10° C. and 60° C., inclusive, de minimis or an absence of glistening, and substantially 100% transmissivity of light in the visible spectrum. The intraocular lens is then rolled at a temperature above Tg of the SMP material. The intraocular device is radially compressed within a die to a diameter of less than or equal to 1.8 mm while maintaining the temperature above Tg. The compressed intraocular lens device may be inserted through an incision less than 2 mm wide in a cornea or sclera or other anatomical structure. The lens can be inserted into the capsular bag, the ciliary sulcus, or other cavity through the incision. The SMP can substantially achieve refractive index values of greater than or equal to 1.45. | 09-13-2012 |
20130085518 | MULTI-FIBER SHAPE MEMORY DEVICE - A shape memory coiling device ( | 04-04-2013 |
20130165949 | SOFT TISSUE COAPTOR AND DEVICE FOR DEPLOYING SAME - A soft tissue coaptor and a soft tissue coaptor deployment device are disclosed which deliver a soft tissue coaptor or clip to a desired location for tissue repair. The soft tissue coaptor and soft tissue coaptor deployment device have particular application in surgical and microsurgical settings such as cardiac, vascular, and ophthalmic surgery. | 06-27-2013 |
20130218178 | MEDICAL FABRIC WITH INTEGRATED SHAPE MEMORY POLYMER - Formulations of shape memory polymer (SMP) are integrated with several existing clinically available medical fabrics. The SMP portion of a SMP-integrated fabric can be fabricated in varying thicknesses with the minimum thickness determined by the thickness of the underlying fabric and up to almost any thickness. A large variety of patterns may be formed in SMP-integrated fabrics based upon how the shape memory polymer is integrated into the base fabric. Integration of the SMP with the base fabrics does not alter the shape memory functionality of the SMP. The design tools for controlling activation rate for traditional SMP materials thus apply to SMP-integrated fabrics. SMP-integrated fabrics may also be steam sterilized without loss of shape memory functionality. By using multiple formulations of SMP on a single piece of fabric, a large combination of material properties may be provided within a single SMP-integrated fabric device. | 08-22-2013 |
20130267887 | AQUEOUS HUMOR MICRO-BYPASS SHUNTS - A small shunt can be placed within the eye to aid in drainage of aqueous humor from the anterior chamber of the eye to a pocket between the conjunctiva and the sclera to be absorbed, or to secrete through the cornea or the sclera external to the eye for glaucoma or ocular hypertension treatment. This drainage can decrease the pressure of the eye and potentially modify the course of advancing glaucomatous optic neuropathy as it relates to eye pressure. The shunt is formed of a shape memory polymer material and deformed into a smaller form factor to reduce trauma to the eye resulting from the insertion of the shunt through the sclera to the anterior chamber. Once in situ, the shunt deploys in response to body heat or other external stimulus and expands to its original, larger form factor to provide a secure friction fit of the shunt within the scleral tissue and to enlarge the lumen of the shunt to allow for aqueous flow. | 10-10-2013 |
20130277890 | Dual-Cure Polymer Systems - The present invention includes compositions that are useful to prepare dual-cure shape memory polymer systems. The present invention further provides methods of generating a shape memory polymer, optical device, polymer pad with an imprint, or suture anchor system. | 10-24-2013 |
20140147013 | DIRECT ECHO PARTICLE IMAGE VELOCIMETRY FLOW VECTOR MAPPING ON ULTRASOUND DICOM IMAGES - An Echo PIV analysis process, apparatus and algorithm are developed to reduce noise and analyze DICOM images representing a fluid flow of a plurality of particles. A plurality of DICOM images representing sequential image pairs of a plurality of particles is received. The plurality of DICOM sequential image pairs are grouped. The sequential image pairs are correlated to create N cross correlation maps. An average cross-correlation transformation is applied to each cross correlation map to create an image pair vector map for each image pair. A maximizing operation is applied to one or more of the N adjacent image pair vector maps to create a modified image pair vector map for the one or more of the N image pairs. The maps are combined to create a corresponding temporary vector map that are averaged to obtain a mean velocity vector field of the sequential image pairs. | 05-29-2014 |
20140172094 | SHAPE MEMORY POLYMER INTRAOCULAR LENSES - A shape memory polymer (SMP) intraocular lens may have a refractive index above 1.45, a Tg between 10° C. and 60° C., inclusive, de minimis or an absence of glistening, and substantially 100% transmissivity of light in the visible spectrum. The intraocular lens is then rolled at a temperature above Tg of the SMP material. The intraocular device is radially compressed within a die to a diameter of less than or equal to 1.8 mm while maintaining the temperature above Tg. The compressed intraocular lens device may be inserted through an incision less than 2 mm wide in a cornea or sclera or other anatomical structure. The lens can be inserted into the capsular bag, the ciliary sulcus, or other cavity through the incision. The SMP can substantially achieve refractive index values of greater than or equal to 1.45 | 06-19-2014 |
20140232025 | MANUFACTURING METHOD FOR SHAPE MEMORY POLYMER INTRAOCULAR DEVICES - A shape memory polymer (SMP) intraocular lens may have a refractive index above 1.45, a Tg between 10° C. and 60° C., inclusive, de minimis or an absence of glistening, and substantially 100% transmissivity of light in the visible spectrum. The intraocular lens is then rolled at a temperature above Tg of the SMP material. The intraocular device is radially compressed within a die to a diameter of less than or equal to 1.8 mm while maintaining the temperature above Tg. The compressed intraocular lens device may be inserted through an incision less than 2 mm wide in a cornea or sclera or other anatomical structure. The lens can be inserted into the capsular bag, the ciliary sulcus, or other cavity through the incision. The SMP can substantially achieve refractive index values of greater than or equal to 1.45. | 08-21-2014 |