University of Minnesota

University of Toronto

Medtronic Cryocath LP

Smithsonian Institution

Everest Medical Innovation Gmbh

Other

John Bischof

Paul Anthony Iaizzo

Zhenpeng Qin

Taner Akkin

Warren Chan

Timothy G Laske

Jean-Pierre Lalonde

Regina E Groves

Gregory M Vercellotti

David Alfonso Ramirez

Li Zhan

John D Belcher

Qi Shao

Navid Manuchehrabadi

Pegah Ranjbartehrani

Franz Schmidlin

Nir Merry

Sean D Lubner

Michael C McAlpine

Harishankar Natesan

Mary Hagedorn

Kanav Khosla

Alexandre Porcello

Nikolas Zuchowicz

Jonathan Daly

Samira M Azarin

Francisco Pelaez

Kieran T Smith

Guebum Han

John Hulbert

Christopher E Dames

Jeunghwan Choi

T J Lu

Feng Xu

Meng Shi

Cari Suzanne Dutcher

Mary Margaret Hagedorn

Methods and vitrification systems for biological samples are provided. The vitrification system has a rotatable cryowheel () with a facing surface (). Droplets of a composition that includes a biological sample are released onto the facing surface. Droplets are rapidly pulled beneath the surface of the cryogenic coolant () to generate vitrified samples (). Methods and cryopreservation devices are also provided that incorporate the vitrification systems.

High throughput system for production and vitrification of biomaterials in cryoprotectant droplets

A surgical kit for providing a cryoprotective composition configured to be applied during cryotreatment of a patient includes: a first container containing a predetermined amount or volume of a biodegradable and/or bioerodible fluid agent; and a second container containing a predetermined amount or volume of a non-toxic cryoprotectant agent. The predetermined amount or volume of the of biodegradable and/or bioerodible fluid agent and the predetermined amount or volume of a non-toxic cryoprotectant agent are configured to be mixed together to form the cryoprotective composition in which a therapeutically effective amount of the cryoprotective composition deposited in a body space of the patient in proximity to the cryotreatment remains within at least a portion of the body space for a duration of the cryotreatment and at least a portion of a body tissue proximate to the body space is viable after the cryotreatment.

Cryoprotective compositions, surgical kits, and methods for protection of a surgical site during cryosurgery

A cryoprotective composition configured to be applied during cryotreatment of a patient includes at least one biodegradable and/or bioerodible fluid agent and at least one non-toxic cryoprotectant agent. A therapeutically effective amount of the cryoprotective composition deposited in a body space of the patient in proximity to the cryotreatment remains within at least a portion of the body space for a duration of the cryotreatment. At least a portion of a body tissue proximate to the body space is viable after the cryotreatment. A method of protecting a surgical site during prostate cryosurgery is also provided. The method includes injecting a therapeutically effective amount of the cryoprotective composition into the body space, wherein the body space is a periprostatic space of a patient.

Cryoprotective compositions and methods for protection of a surgical site during cryosurgery

A system includes a placement head with at least one printing nozzle configured to pick up and detachably hold at least one biological organism; an image acquisition system including a visual inspection system configured to identify at least one target biological organism to be picked up by the printing nozzle of the placement head in a first location, and identify at least one second location for deposit of the at least one target biological organism, wherein the first location is different from the at least one second location; and a robotic motion system that moves the placement head, based on input from the visual inspection system and a distance identification system, from the first location to the at least one second location, such that the placement head deposits the target biological organism at the at least one second location.

Three dimensional placement of organisms

A device includes an electrically conductive or electrically semiconductive material and a biocompatible porous scaffold around the electrically conductive or electrically semiconductive material. The biocompatible porous scaffold includes a biocompatible polymer and pores configured to capture metastatic cells.

Composite scaffolds for thermal ablation of metastatic cancer cells

A cryopreservation composition generally includes a cryoprotective agent and a laser absorber that includes a metal. Rewarming a cryopreserved specimen that includes the cryopreservation composition includes subjecting the cryopreserved specimen to a laser pulse effective to heat the laser absorber sufficiently to thaw the cryopreserved biospecimen.

Cryopreservation compositions and methods involving nanowarming

A method and system for providing lesion depth feedback during an ablation procedure. In particular, the method and system provide feedback data or information relating to lesion depth in myocardial tissue during a cryoablation procedure. A plurality of tissue temperature measurements may be transmitted from a plurality of thermocouples disposed on a cryotreatment element, which measurements may be used to determine a slope of change in temperature sensed by each thermocouple over time. The circulation of coolant through the treatment element may be adjusted when the slope changes. A change in slope may indicate that the cryoablation temperatures have passed through target myocardial tissue into non-target, non-myocardial tissue, which may result in collateral damage to structures near the heart.

Feedback system for cryoablation of cardiac tissue

Compositions and methods for cryoprotecting a biological tissue can involve a cryoprotective agent and a metal component that includes a metal foam, a metal foil, or a metal seed. The method allows the biological tissue to be rewarmed at a rate of at least 100&#xb0; C./min.

Cryoprotection compositions and methods

Assays used in conjunction with a thermal contrast reader are disclosed. In the assay, the test strip includes materials that can develop a thermal response if a target analyte is present in a sample. Linear flow assays include nanoparticles with high affinity binding to the analyte. Binding of the nanoparticles with an analyte in the sample is detected using thermal contrast. Analytes over a broad range of concentrations are detected in the linear flow assays. Methods of detecting target analytes and kits comprising lateral flow assays and thermal contrast reader are also disclosed.

Lateral flow assays with thermal contrast readers

A sensing system uses three-omega sensing to determine a spatial profile of thermal property within a sample. The sensing system electrically powers a lossy electrical conductor at different driving frequencies. The different driving frequencies produce different penetration depths within the sample. The sensing system takes multiple measurements of thermal property at the different driving frequencies. Each measurement is associated with a different penetration depth, and therefore is averaged over a differently-sized volume within the sample. The sensing system performs a fit on the multiple measurements of material thermal property versus material geometry. If one of thermal property or geometry is known beforehand, then the fit can determine the other. The lossy electrical conductor can be formed on a polymeric flexible membrane, on a probe that can be placed at a suitable location in a patient's body, and/or directly onto a heating or cooling element.

System and method for determining a spatial thermal property profile of a sample

Assays used in conjunction with a thermal contrast reader are disclosed. In the assay, the test strip includes materials that can develop a thermal response if a target analyte is present in a sample. The thermal contrast reader includes housing having an opening to receive the test strip at a test location, an energy source directed at the test location and a heat sensor directed at the test location. The heat sensor is configured to sense heating of the test strip upon activation of the heat source at the test location, if the target analyte is present in the sample. The heat sensor can provide sensor output using diagnostic circuitry coupled to the sensor output and configured to provide a diagnostic output. The diagnostic output can indicate the diagnostic condition of the patient as a function of the sensor output. The present disclosure also includes methods of detecting target analytes and kits comprising lateral flow assays and thermal contrast reader.

Thermal contrast assay and reader

Methods, compositions, and systems useful to enhance a thermal surgical procedure are described. Compositions include at least one compound effective to induce an inflammatory response in biological material identified to undergo a thermal surgical procedure. Methods and systems include providing compositions of the invention to biological materials and treating biological materials with an inflammation inducing composition for a time, amount, and type effective to induce inflammation in at least a portion of the biological material.

Thermal surgical procedures and compositions

Growing community of inventors

Saint Paul, MN, United States of America

John Bischof