Devices and methods for isolating segments of luminal tissue are provided. Aspects of the present invention include catheter devices comprising (a) an outer catheter comprising an outer catheter lumen, (b) an inner catheter positioned within the outer catheter lumen, the inner catheter comprising: (i) first and second inner catheter lumens, (ii) perforations at a distal region of the inner catheter, and (ill) a guidewire passage channel positioned distal to the perforations, (c) a balloon attached to the inner catheter positioned distal to the perforations and proximal to the guidewire passage channel in fluidic communication with the second inner catheter lumen and configured to radially expand, (d) a guidewire positioned in the guidewire passage channel, (e) a first radiopaque marker on the inner catheter distal to the balloon, and (f) a second radiopaque marker at a distal region of the outer catheter.

The present disclosure relates to a device for indicating pressure of fluids. The device includes a first end to receive the fluid and a pressure indicator having a membrane configured to be deformed in presence of fluid. The membrane is configured to be deformed as per a level of fluid the device, thereby indicating the pressure of the fluid. The device further includes a base plate having an aperture and a dome shaped element. The membrane is configured to be attached to the base plate and the dome shaped element is configured to cover the membrane, thereby preventing spilling of fluid. The dome shaped element is made of transparent material, thereby facilitating visual indication of deformation of the fluid. The device is configured to be used in detecting a type of blood vessel, such as, an artery or a vein.

Medical devices, perfusion systems, and methods for detecting a pressure within a space in a subject and for perfusion of fluid into a space in a subject. The space may be a fluid-filled space, or a space that is depleted of fluid due to an obstruction to fluid flow into the space. Methods for forming the medical devices.

Methods and related systems treating headache and migraine. The method may include producing an injury to a nerve at an identified location of hypersensitivity; wherein the identified location is a location of nerve hypersensitivity. The identified location may be within the anterior or frontal aspect of a nasal cavity, corresponding to a location of the V1 branch of the trigeminal nerve. Producing an injury may comprise providing cryotherapy to the identified location. The cryotherapy is supplied by a chilled probe, a cryo-ballon, a nasal spray device, or a gel applicator.

A multi-lumen insertion tube for use with an endoscope, the multi-lumen insertion tube having a circumferential outer wall defining a main inner lumen, and a plurality of inner septa dividing the main inner lumen into a plurality of lumens. The circumferential outer wall is configured to expand radially outwardly when positive pressure is applied through the insertion tube, and to at least partially collapse against at least one of the inner septa when negative pressure is applied through the insertion tube, such that further collapse of the circumferential wall is prevented by at least one of the inner septa.

A system for assessing a pressure profile of a gastrointestinal (GI) tract is provided. The system includes a flexible tube defining a first lumen and an electrically-conductive liquid contained within the first lumen. At least one restriction is restriction formed on the flexible tube to constrict but not completely occlude the first lumen. The system further includes a sensor system configured to monitor an electrical property of the electrically-conductive fluid over time and to generate a report of pressure changes in the GI tract by correlating changes in the electrical property with the pressure changes in the GI tract.

A cardiac monitoring control system including a display device, a detection system to periodically detect parameters at a load, a delivery system coupled to the load to deliver a treatment to the load, and a controller comprising a processor and a memory storing instructions. When executed, the instructions cause the processor to receive signals indicative of the parameters periodically detected at the load transmitted by the detection system, and iteratively generate a user-specific ventriculo-arterial coupling (VAC) ratio based on the signals received. The display device animates the VAC ratio dynamically, and the delivery system is activated to deliver a user-specific treatment updated dynamically based on the VAC ratio.

Devices, methods, and systems are provided for occluding a collateral flow channel between a target lung compartment and an adjacent lung compartment. A video-assisted thoracoscopic device is inserted into a thoracic cavity of a patient and positioned at a fissure between a target lung compartment and an adjacent lung compartment. A collateral flow channel between the target lung compartment and the adjacent lung compartment is then identified using the video-assisted thoracoscopic device and an agent is injected into the collateral flow channel, thereby reducing the collateral flow channel.

A fluid conveying device (65) for introducing fluid into and/or removing fluid from an esophageal catheter (48) which is insertable into an esophagus (34) and has a balloon probe (46) for determining an esophageal balloon pressure, comprising: a measuring fluid port (90), which is configured to be coupled to a distal end (48b) of the esophageal catheter (48) such that, in the coupled state, fluid is introducable into the esophageal catheter (48) and/or removable from the esophageal catheter (48) via the measuring fluid port (90); a pump device (100) having at least one fluid pump (102), wherein the pump device (100) is configured to convey fluid in at least a first conveying direction, and a switching valve (106) which is associated with the at least one fluid pump (102) and which is switchable at least between a first position and a second position. The at least one fluid pump (102) is in the form of a micropump or diaphragm pump.

A medical ablation catheter, an ablation system, and an ablation method. The medical ablation catheter comprises a first catheter (1); a second catheter (2), comprising an inner catheter (21) and an outer catheter (22); a conductive part (3), connected to the first catheter (1) and the inner catheter (21), the distal end of the conductive part (3) being fixed within the first catheter (1), the proximal end of the conductive part (3) being fixed on the inner catheter (21); an adjustment part (4), the distal end thereof being fixed within the first catheter (1), the proximal end thereof being movably arranged within the inner catheter (21) in a penetrating manner. The conductive part (3) can be switched between a linear state and an expanded state, and ablation is performed when the conductive part (3) is in the expanded state.