A method of manufacturing a safety catheter includes providing a catheter having a catheter body comprising an exterior surface, a drainage lumen, and an inflation lumen, forming a balloon inflation port between the exterior surface and the inflation lumen, forming a deflation port between the exterior surface and one of the inflation and drainage lumens, fixing a balloon sleeve to the exterior surface over at least the balloon inflation port to define a fluid-tight balloon interior between an interior surface of the balloon sleeve and at least a portion of the exterior surface, removably inserting a deflation plug in the deflation port to water-tightly seal the deflation port until the deflation plug is removed, connecting a proximal portion of a deflation connector to an inside surface of one of the lumens, and connecting a distal portion of the deflation connector to the deflation plug.

A method of limiting an inflation system pressure for dilating a region of a patient's nasal sinus passageways. The method includes grasping an inflation device. The inflation device includes a syringe including a plunger slidably disposed within a barrel, a connector for fluidly connecting an outlet of the syringe with a surgical instrument balloon, and a mechanical pressure indicator associated with the syringe, the mechanical pressure indicator including a housing and an indicator body disposed within the housing. The method also includes delivering the surgical instrument balloon to a patient's paranasal sinus target area, operating the plunger within the barrel of the syringe to deliver pressurized fluid to the surgical instrument balloon, and transitioning the indicator body to extend outside of the housing when a predetermined inflation pressure of the surgical instrument balloon is reached.

An inflatable bone tamp includes an outer shaft defining a passageway. An inner shaft is positioned within the passageway. The inner shaft defines a lumen. A balloon has a first end coupled to the outer shaft and a second end coupled to the inner shaft such that material can flow through the lumen and into the balloon and exit the balloon through a channel between the inner and outer shafts. A valve is positioned within the channel. The valve is configured to move from a closed orientation in which the valve blocks the channel and an open orientation in which the does not block the channel. Kits, systems and methods are disclosed.

A pressure-regulated balloon apparatus is provided to prevent brain collapse, to solve negative/positive pressure imbalances formed, and to prevent bleeding by pressure with a soft effect to the cavity formed after brain cyst and tumor surgery.

A device for dilating an ostium of a paranasal sinus of a human or animal subject may include: a handle; an elongate shaft having a proximal end coupled with the handle and extending to a distal end; a guidewire disposed through at least a portion of the shaft lumen; a dilator having a non-expanded configuration and an expanded configuration; and a slide member coupled with at least one of the guidewire or the dilator through the longitudinal opening of the shaft for advancing the guidewire and/or the dilator relative to the shaft.

A method for controlling a balloon pressure of an inflatable balloon of an intravascular catheter system includes the steps of (i) sending sensor output to a controller, the sensor output being based at least partially on the balloon pressure, and (ii) maintaining the balloon pressure within a predetermined pressure range based at least partially upon the sensor output received by the controller. The step of maintaining includes one of (a) adjusting a flow rate of a cryogenic fluid through the inflatable balloon while moving the inflatable balloon from a first treatment site to a second treatment site, and (b) adjusting the flow rate of the cryogenic fluid that is selectively delivered from the fluid source to the inflatable balloon through an adjunct fluid injection line that is in fluid communication with a fluid exhaust line.

A cervical dilator and methods of using the cervical dilator include guiding a shaft and a balloon of the cervical dilator through a cervix to seat the balloon in an uninflated state within a cervix. Seating the balloon includes locating proximal and distal ends of the balloon near proximal and distal ends of the cervix such that the balloon fills a canal of the cervix. After seating the balloon within the canal of the cervix, the method includes introducing a predetermined amount of fluid into the balloon cavity to fill the balloon to an inflated state. While the balloon is in the inflated state, the method includes waiting a predetermined time period to allow cervical dilation. After waiting the predetermined time period, the method includes applying light tension to the exterior surface of the shaft to remove the shaft and the balloon in the inflated state from the cervix.

A pressure inhibitor for an intravascular catheter system includes a check valve and/or a pressure relief valve. The intravascular catheter system includes a handle assembly, an inner balloon, an outer balloon and a low pressure fluid line. The inner balloon and the outer balloon define an inter-balloon space therebetween. The low pressure fluid line extends between the handle assembly and the inter-balloon spaced The low pressure fluid line is in fluid communication with the inter-balloon space. The pressure inhibitor is positioned on the low pressure fluid line. The pressure inhibitor inhibits flow of a fluid to the inter-balloon space. The pressure inhibitor can be positioned within the handle assembly or outside of the handle assembly. A method of inhibiting flow of a fluid to the inter-balloon space includes positioning a pressure inhibitor on the low pressure fluid of an intravascular catheter system.

A catheter is provided that includes first and second balloons on a catheter shaft. The first balloon includes a cylindrical main section extending between first and second ends thereof defining a first interior communicating with an inflation lumen of the catheter shaft, and a second balloon including a first end attached to the catheter shaft adjacent the first end of the first balloon and a second end extending over the main section of the first balloon such that the second balloon defines a second interior. The first balloon includes openings in the membrane of the first balloon that are located within the second interior to allow inflation media delivered through the inflation lumen to enter the first interior to inflate the first balloon and pass through the one or more openings into the second interior to inflate the second balloon sequentially or simultaneously with the first balloon.

A device having a sheath, a medical device, a stylet, a handle having a chamber portion and a plunger device. The handle connects to proximal ends of the sheath, the medical device, and the stylet. The chamber portion includes a volume of space configured to volumetrically connect to at a lumen of the medical device, the sheath or the stylet. The plunger device slides and moves within the chamber portion. The plunger device is able to pneumatically or hydraulically isolate a proximal portion of the volume of space from a distal portion of the volume of space. Proximal movement of the stylet and the plunger device cause a suction effect (i.e., negative or reduced pressure) at the distal end of the sheath and/or the medical device.