Abstract: The present disclosure relates to radiopaque PVA polymers where the PVA has a first pendant group and a second pendant group, wherein the first pendant group comprises a first phenyl group bearing 1 to 5 iodine atoms, and the second pendant group comprises either (a) a second phenyl group bearing 1 to 3 substituents selected from the group W and optionally 1 to 4 iodine substituents, the group(s) W and the optional iodines being the sole substituents of the second phenyl group. Each W is selected from —OH, —COOH, —SO3H, —OPO3H2, —O—(C1-4alkyl), —O—(C1-4alkyl)OH, —O—(C1-4alkyl)R2, —O—(C2H5O)qR1 —(C?O)—O— C1-4alkyl and —O—(C?O)C1-4alkyl; wherein R1 is H or C1-4 alkyl; R2 is —COOH, —SO3H, or —OPO3H2; q is an integer from 1 to 4; wherein the group W may be in the form of a pharmaceutically acceptable salt; or (b) a pyridyl group; which is optionally in the form of a pyridinium ion.

Abstract: This invention relates to radiopaque polymers and to their use, particularly in the manufacture of medical devices and in methods of medical treatment, including therapeutic embolization. In particular embodiments the present disclosure relates to a hydrophilic polymer comprising pendent groups which a phenyl ring is substituted with one or more iodine groups and one or more non-iodine groups as described in more detail herein.

Abstract: The present disclosure relates to radiopaque PVA polymers where the PVA has a first pendant group and a second pendant group, wherein the first pendant group comprises a first phenyl group bearing 1 to 5 iodine atoms, and the second pendant group comprises either (a) a second phenyl group bearing 1 to 3 substituents selected from the group W and optionally 1 to 4 iodine substituents, the group(s) W and the optional iodines being the sole substituents of the second phenyl group. Each W is selected from —OH, —COOH, —SO3H, —OPO3H2, —O—(C1-4alkyl), —O—(C1-4alkyl)OH, —O—(C1-4alkyl)R2, —O—(C2H5O)qR1—(C?O)—O—C1-4alkyl and —O—(C?O)C1-4alkyl; wherein R1 is H or C1-4 alkyl; R2 is —COOH, —SO3H, or —OPO3H2; q is an integer from 1 to 4; wherein the group W may be in the form of a pharmaceutically acceptable salt; or (b) a pyridyl group; which is optionally in the form of a pyridinium ion.

Abstract: A hydrophilic polymer comprising pendent groups of the formula I: Wherein: W is independently selected from —OH, —COOH, —SO3H, —OPO3H, —O—(C1-4alkyl), —O—(C1-4alkyl)OH, —O—(C1-4alkyl)R2, —O—(C2H5O)qR1—(C?O)—O—C1-4alkyl and —O—(C?O)C1-4alkyl; or a group —BZ; wherein —OH, COOH, O—PO3H and SO3H maybe in the form of a pharmaceutically acceptable salt; wherein: B is a bond, or a straight branched alkanediyl, oxyalkylene, alkylene oxaalkylene, or alkylene (oligooxalkylene) group, optionally containing one or more fluorine substituents; and Z is an ammonium, phosphonium, or sulphonium phosphate or phosphonate ester zwitterionic group; X is either a bond or a linking group having 1 to 8 carbons and optionally 1 to 4 heteroatoms selected from O, N and S; G is a coupling group through which the group of the formula I is coupled to the polymer and is selected from ether, ester, amide, carbonate, carbamate, 1,3 dioxolone, and 1,3 dioxane; R1 is H or C1-4 alkyl; R2 is —COOH, —SO3H, or —OPO3H2 q is an integer from 1 to 4;

Abstract: A method and system for communication protocol pass reduction amongst recipient nodes capable of receiving broadcast messages, the recipient nodes functioning as different decisions points for determination of a passing joint set of nodes for squadron communication therebetween. The method and system provide squadron communication between different ones of the recipient nodes, wherein one of the recipient nodes becomes a squadron leader node upon a selection of a specific broadcast message for distribution to other recipient nodes for acceptance. The squadron leader node and the other recipient nodes upon acceptance form the passing joint set of nodes for squadron communication therebetween.

Abstract: A method and system for communication protocol pass reduction amongst recipient nodes capable of receiving broadcast messages, the recipient nodes functioning as different decisions points for determination of a passing joint set of nodes for squadron communication therebetween. The method and system provide squadron communication between different ones of the recipient nodes, wherein one of the recipient nodes becomes a squadron leader node upon a selection of a specific broadcast message for distribution to other recipient nodes for acceptance. The squadron leader node and the other recipient nodes upon acceptance form the passing joint set of nodes for squadron communication therebetween.

Abstract: A hydrophilic polymer comprising pendent groups of the formula I: Wherein: W is independently selected from —OH, —COOH, —SO3H, —OPO3H, —O—(C1-4alkyl), —O—(C1-4alkyl)OH, —O—(C1-4alkyl)R2, —O—(C2H5O)qR1—(C?O)—O—C1-4alkyl and —O—(C?O)C1-4alkyl; or a group —BZ; wherein —OH, COOH, O—PO3H and SO3H maybe in the form of a pharmaceutically acceptable salt; wherein: B is a bond, or a straight branched alkanediyl, oxyalkylene, alkylene oxaalkylene, or alkylene (oligooxalkylene) group, optionally containing one or more fluorine substituents; and Z is an ammonium, phosphonium, or sulphonium phosphate or phosphonate ester zwitterionic group; X is either a bond or a linking group having 1 to 8 carbons and optionally 1 to 4 heteroatoms selected from O, N and S; G is a coupling group through which the group of the formula I is coupled to the polymer and is selected from ether, ester, amide, carbonate, carbamate, 1,3 dioxolone, and 1,3 dioxane; R1 is H or C1-4 alkyl; R2 is —COOH, —SO3H, or —OPO3H2 q is an integer from to 4; n

Abstract: A polymer having a backbone comprising a polyhydroxylated polymer cross linked by a C3 to C8 diacid.

Abstract: The present disclosure relates to radiopaque PVA polymers where the PVA has a first pendant group and a second pendant group, wherein the first pendant group comprises a first phenyl group bearing 1 to 5 iodine atoms, and the second pendant group comprises either (a) a second phenyl group bearing 1 to 3 substituents selected from the group W and optionally 1 to 4 iodine substituents, the group(s) W and the optional iodines being the sole substituents of the second phenyl group. Each W is selected from —OH, —COOH, —SO3H, —OPO3H2, —O—(C1-4alkyl), —O—(C1-4alkyl)OH, —O—(C1-4alkyl)R2, —O—(C2H5O)qR1—(C?O)—O—C1-4alkyl and —O—(C?O)C1-4alkyl; wherein R1 is H or C1-4 alkyl; R2 is —COOH, —SO3H, or —OPO3H2; q is an integer from 1 to 4; wherein the group W may be in the form of a pharmaceutically acceptable salt; or (b) a pyridyl group; which is optionally in the form of a pyridinium ion.

Abstract: A method and system for communication protocol pass reduction amongst recipient nodes capable of receiving broadcast messages, the recipient nodes functioning as different decisions points for determination of a passing joint set of nodes for squadron communication therebetween. The method and system provide squadron communication between different ones of the recipient nodes, wherein one of the recipient nodes becomes a squadron leader node upon a selection of a specific broadcast message for distribution to other recipient nodes for acceptance. The squadron leader node and the other recipient nodes upon acceptance form the passing joint set of nodes for squadron communication therebetween.

Abstract: A meter reader for reading a meter have a display portion displaying a total output of a quantity being metered and plural incremental outputs defining the total output. The meter reader includes a sensing mechanism for sensing one of the plural incremental outputs in the meter display portion, and a processing unit coupled to the sensing mechanism for accumulating incremental outputs sensed by the sensing mechanism and for determining accumulated meter output over a time period based on the accumulated incremental outputs. Also included is an output mechanism for outputting the accumulated meter output determined by the processing unit. In one example, the sensing mechanism includes a sensor for sensing only a least significant incremental output in usage included in the meter display portion, and an emitter for illuminating the least significant incremental output included in the meter display portion.

Abstract: A meter reader for reading a meter have a display portion displaying a total output of a quantity being metered and plural incremental outputs defining the total output. The meter reader includes a sensing mechanism for sensing one of the plural incremental outputs in the meter display portion, and a processing unit coupled to the sensing mechanism for accumulating incremental outputs sensed by the sensing mechanism and for determining accumulated meter output over a time period based on the accumulated incremental outputs. Also included is an output mechanism for outputting the accumulated meter output determined by the processing unit. In one example, the sensing mechanism includes a sensor for sensing only a least significant incremental output in usage included in the meter display portion, and an emitter for illuminating the least significant incremental output included in the meter display portion.

Abstract: A low cost spread spectrum modulator for BPSK, or Binary Phase Shift Keying capable of outputting the high modulation rate and suppressed carrier output needed in spread spectrum systems. The present invention provides high quality BPSK modulation without the double balance mixers as required in the prior art, thereby dispensing with the necessity of complex transistor/potonciometer or diode/transformer arrangements. The present invention provides BPSK modulation utilizing only one transformer, which can be adjusted for carrier suppression and two transistors. FET's, or digital logic gates or the like, allowing the present system to be driven from low power CMOS logic levels, yet producing eight db of gain. The present invention may also be utilized as a frequency multiplier, with the utilization of the appropriately high frequency transistor, FET, digital logic gate, or the like.