Class / Patent application number | Description | Number of patent applications / Date published |
606025000 | Self-contained coolant supply | 21 |
20090182320 | Cryosurgical System - A cryosurgical system using a low-pressure liquid nitrogen supply, which requires only 0.5 to 15 bar of pressure to provide adequate cooling power for treatment of typical breast lesions. The pressure may be provided by supplying lightly pressurized air into the dewar, by heating a small portion of the nitrogen in the dewar, or with a small low pressure pump. | 07-16-2009 |
20110152850 | DEVICES AND METHODS FOR DISPENSING A CRYOGENIC FLUID - Self-contained disposable cryosurgical devices dispense a cryogenic fluid, such as a stream of liquid nitrous oxide, carbon dioxide or argon. The cryosurgical devices include a container, including a reservoir containing a cryogenic fluid, a flow passage configured to receive the cryogenic fluid from the reservoir, a valve assembly configured in an ergonomic housing, and a dispensing head. The device further includes at least one filter disposed in the flow passage configured to facilitate the flow of the cryogenic fluid. The valve assembly includes a valve body and valve slide that is actuated to effect the flow of the cryogenic fluid through the flow passage to patient target. The housing includes an activation lever with an eccentric hub that primes the device for use when a container is loaded into the housing and the activation lever is closed. | 06-23-2011 |
20110152851 | CRYO-SURGICAL SYSTEMS AND METHODS OF USING THE SAME - A cryo-surgical system may comprise a container containing a refrigerant, a delivery tube having a first end configured to be in flow communication with the container and a second end opposite the first end. The system may further include a plurality of flexible finger portions disposed proximate a second end of the delivery tube opposite the first end, an applicator bud having a body portion disposed within the plurality of flexible finger portions and a contact surface extending from the plurality of flexible finger portions. An adjustment ring may be disposed along the delivery tube adjacent to the plurality of flexible finger portions. The contact surface of the bud may be changeable by adjustment of the adjustment ring. | 06-23-2011 |
20110301585 | Method for rejuvenating and tightening human skin utilizing a cryogenic applicator - A method for tightening and rejuvenating skin utilizing a cryogenic applicator, which includes the steps of holding a handle of a barrel of the cryogenic applicator in a hand, fluidly communicating the barrel with a source of a biocompatible non-toxic cryogenic fluid to supply the biocompatible non-toxic cryogenic fluid through a hollow interior of the barrel, out through a plurality of openings in a distal portion of the barrel, and onto a head of the cryogenic applicator, rolling the head quickly, smoothly, and evenly over the skin being treated for a period of time in an order of hundredths or tenths of a second, and sparging the biocompatible non-toxic cryogenic fluid onto the skin quickly, evenly, and smoothly when the head is rolled on the skin, and thereby tightening and rejuvenating the skin. | 12-08-2011 |
20110313411 | METHOD AND APPARATUS FOR DERMATOLOGICAL HYPOPIGMENTATION - Exemplary embodiments of the present disclosure provide method and apparatus for effecting (e.g., lightening) an appearance of skin by cooling or freezing small separated surface regions of the skin to produce regions of local hypopigmentation. The width of the regions can be, for example, smaller than about 1 mm or 0.5 mm, and a distance between these frozen regions can be greater than about 3 times the width of the regions. An exemplary apparatus can be provided that includes a plurality of spatially-separated thermally conductive arrangements that can be affixed or otherwise coupled to a base. For example, the conductive arrangements can be regions of conductive material provided in or proximal to a thermal insulator, or thermally conductive protrusions affixed to the base. The conductive arrangements can be cooled and then contacted with the skin surface to produce the small regions of hypopigmentation. | 12-22-2011 |
20130190745 | Cryogenic Probe System - A cryogenic system having a base unit tethered to a handpiece connectable to a needle probe. The handpiece holds a replaceable cryogen canister assembly. The base unit connects to mains to provide power to the handpiece. The base unit includes a back-up power source in the event of interruptions of power via mains. | 07-25-2013 |
20130324990 | Replaceable and/or Easily Removable Needle Systems for Dermal and Transdermal Cryogenic Remodeling - The present invention generally provides improved medical devices, systems, and methods. Some embodiments of the present invention apply cooling with at least one small, tissue-penetrating probe, the probe often comprising a needle having a size suitable for inserting through an exposed surface of the skin of a patient without leaving a visible scar. The cooling may remodel one or more target tissue so as to effect a desired change in a composition of the target tissue and/or a change in its behavior. Exemplary embodiments make use of replaceable needle probes supported by a probe body handle, with small needle probes often being replaced during treatment of a single patient. Careful control over the control of cryogenic cooling fluid into a needle probe can allow the length of the active cooling to be controlled through depletion of liquid from an evaporating cryogenic cooling flow. | 12-05-2013 |
20140046312 | CLOSED-LOOP SYSTEM FOR CRYOSURGERY - A closed-loop system for cryosurgery includes a cryofluid at cryogenic temperatures flowing through a closed-loop flow path. A pump, configured for operating at cryogenic temperatures, circulates the cryofluid in the closed-loop flow path. The closed-loop flow path includes a heat exchanger coupled to a heat sink configured for cooling the cryofluid in the closed-loop flow path to cryogenic temperatures. The closed-loop system includes one or more cryoneedles configured for providing cryotherapy, and one or more flow control devices, wherein each flow control device is configured for operating at cryogenic temperature and for selectively flow connecting or flow disconnecting at least one of the cryoneedles to the closed-loop flow path. | 02-13-2014 |
20140058370 | CRYOSURGICAL PROBE WITH ADJUSTABLE SLIDING APPARATUS - A cryosurgical probe assembly including a cryosurgical probe having a shaft, an insulation element housed within the cryosurgical probe and being slideably repositionable relative to the shaft, and a fluid supply line having an inlet portion for connection to a cryogenic fluid source. | 02-27-2014 |
20140194863 | PHASE SEPARATION OF CRYOGEN IN CRYOSURGICAL INSTRUMENT - A cryosurgical instrument including: a shaft having a closed distal end defining an expansion chamber and an open proximal end that receives an inflow of cryogen and to exhaust a flow of expanded cryogen; and a heat exchanger with a cryogen delivery tube that spirals around a core disposed along longitudinal axis thereof. The cryogen delivery tube, at least where it spirals, is in fluid tight contact with the inner surface of the shaft so as to form spiraling cryogen exhaust pathways that extend along a portion of a length of the cryosurgical instrument from the distal end of the shaft. The cryogen delivery tube forces a two-phase flow of cryogen to undergo phase separation by centrifugal forces and urges the liquid phase against the external walls of the spiral coil and the outer surface of the spiral gap. Heat exchanging, through boiling, occurs close to the external wall of the instrument. | 07-10-2014 |
20140276711 | Therapeutic Cryoablation System - A cryoablation system has a gas source which provides a working nitrogen gas at room temperature and at a constant set pressure, a liquid generator which is coupled to the gas source to receive the working gas, and which then generates a working cryogen fluid, and a catheter coupled to the liquid generator for receiving the working cryogen, the catheter having a distal section having a freezing element which delivers the working cryogen to a treatment location, the catheter also having a balloon positioned adjacent the distal section. | 09-18-2014 |
20140276712 | CONTACT SPECIFIC RF THERAPY BALLOON - A catheter including a proximal end and a distal end. An expandable element coupled to the distal end is included, the expandable element including a proximal portion and a distal portion, the expandable element defining an exterior surface. A first plurality of electrodes coupled to the exterior surface of the distal portion of the expandable element are included, each of the first plurality of electrodes being selectively operable to transmit unipolar radiofrequency energy. A second plurality of electrodes coupled to the exterior surface of the proximal portion of the expandable element are included, each of the second plurality of electrodes being selectively operable to transmit bipolar radiofrequency energy. | 09-18-2014 |
20140316399 | CRYOPROBE - The invention relates to a medical device, including interchangeable parts thereof, for performing corneal cell freezing wherein said device comprises an elongate member having a flow line system through which a cryogenic fluid flows to cool a cryoprobe tip which tip is fixed and comprises a concave epithelial surface contact member. | 10-23-2014 |
20140350537 | CRYOGENIC SYSTEM AND METHODS - Embodiments of the present invention relate to cryogenic systems and methods useful to cool objects, including living tissue, to freezing or cryogenic temperatures by placing the object in thermal communication with sub-cooled supercritical nitrogen. | 11-27-2014 |
20150045782 | DISPENSING DEVICE FOR PRESSURIZED CONTAINERS FOR THE APPLICATION OF CRYOGENIC COOLANT - The invention is a dispensing device for pressurized containers (C) of coolants for cryotherapy, comprising an opening/closing valve (C | 02-12-2015 |
20150126987 | METHOD FOR FEEDING A CRYOGENIC AGENT TO A CRYOGENIC INSTRUMENT AND CRYOSURGICAL APPARATUS FOR IMPLEMENTING SAME - The invention relates to the field of medicine, specifically to methods for feeding a cryogenic agent to a cryogenic instrument, and also to cryosurgical apparatuses. | 05-07-2015 |
20150313662 | A DISPENSER OF CRYOGENIC SUBSTANCES, AND A PROCESS FOR DISPENSING THE CRYOGENTIC SUBSTANCES - A method for dispensing cryogenic substances including: predisposing a pressurized container for a cryogenic substance which includes a valve active at the opening and regulating an emission of the cryogenic substance, predisposing a coupling element stably constrained to the container, predisposing an activating element engaged to the coupling element in such a way that it is interposed between the container and the activating element. There may be: a dispensing step in which the activating element is pressed nearingly to the container to bring the valve of the container into a passage condition to enable exit of the cryogenic substance, a safety step in which the activating element is stably blocked to the coupling element, an intermediate step in which the activating element is mobile relatively by rotation with respect to the blocking element to allow passage from the dispensing step to the safety step and vice versa, an unblocking step including elastic deformation of a part of the activating element which enables passage between the safety step and the intermediate step. | 11-05-2015 |
20160081735 | SYSTEMS AND METHODS FOR CRYOABLATION OF A TISSUE - Systems and methods for cryoablation of a tissue. In at least one embodiment of a cryoablation system of the present disclosure, the cryoablation system comprises an expandable stent comprising a proximal end and a distal end, a sidewall defining a lumen extending between the proximal end and the distal end, and a cryoablation chamber at the distal end, the expandable stent configured to permit blood flow therethrough, and a cryoablation device comprising at least one coolant tube at least partially positioned within the cryoablation chamber, wherein the at least one coolant tube is operable to produce a cryogenic environment sufficient to ablate at least a portion of a tissue engaged within the cryoablation chamber. | 03-24-2016 |
20160135864 | PRESSURE MODULATED CRYOABLATION SYSTEM AND RELATED METHODS - A near critical fluid based cryoablation system comprises a cryoablation catheter for creating a lesion in tissue. A cryogenic fluid is transported under pressure through the catheter. A controller adjusts the pressure from a relatively high (e.g., near critical) pressure to a substantially lower pressure based on a condition during the catheter activation. In one configuration, the pressure is modulated based on the temperature of the catheter. When the temperature of the catheter reaches a target temperature, the pressure is reduced. | 05-19-2016 |
20160183996 | Dermal and Transdermal Cryogenic Microprobe Systems - Medical devices, systems, and methods optionally treat dermatological and/or cosmetic defects, and/or a wide range of additional target tissues. Embodiments apply cooling with at least one small, tissue-penetrating probe, the probe often comprising a needle having a size suitable for inserting through an exposed surface of the skin of a patient without leaving a visible scar. Treatment may be applied along most or all of the insertable length of an elongate needle, optionally by introducing cryogenic cooling fluid into the needle lumen through a small, tightly-toleranced lumen of a fused silica fluid supply tube, with the supply tube lumen often metering the cooling fluid. Treatment temperature and/or time control may be enhanced using a simple pressure relief valve coupled to the needle lumen via a limited total exhaust volume space. | 06-30-2016 |
20190142495 | CRYO-FIXATION CARDIAC PACEMAKER LEAD EXTRACTION DEVICE | 05-16-2019 |