Abstract: The present disclosure provides tubes of the draining of liquid from enterostomies. In accordance with aspects and embodiments, an enterostomy tube is provided for draining liquid stool from the gastrointestinal tract, the enterostomy tube having a flared, internal end with scalloped edges and openings around the circumference to enhance collection and an ovular balloon to better fit within the intestinal tract.

Abstract: A vaginal speculum that includes a fixed blade and a movable blade. The movable blade designed to be extended or retracted as required in order to adjust to the length of the vaginal canal of the patient undergoing surgery. A vaginal speculum is further designed with a blade angle mechanism and a blade pivoting mechanism that allows and controls the angle and rotation of the blades in relation to its base. Vacuum connection and a light can also be provided.

Abstract: Described here are delivery devices for delivering one or more implants to the body, and methods of using. The delivery devices may deliver implants to a variety of locations within the body, for a number of different uses. In some variations, the delivery devices have a cannula with one or more curved sections. In some variations, a pusher may be used to release one or more implants from the cannula. In some variations, one or more of the released implants may be a self-expanding device. Methods of delivering implants to one or more sinus cavities are also described here.

Abstract: a dilatable balloon catheter, comprising: a guide wire inserted and disposed in the inside of the catheter, an operation portion is fixedly connected to one end of the catheter, a balloon is disposed at the outer side of the catheter remote from the operation portion, the lumen of the catheter and the inner cavity of the balloon are connected by a communication structure provided on the catheter, the guide wire includes a first guide wire and a second guide wire which are separated from each other, the rear end of the first guide wire is connected to insertion-extraction structure in the rear end of the operation portion, the second guide wire is fixed to the inside of the catheter by a fixing process.

Abstract: The present invention pertains to multiple piece irrigated ablation electrode assemblies wherein the irrigation channels are insulated or separated from at least one temperature sensing mechanism within the distal portion of the electrode assembly. The present invention further pertains to methods for improved assembly and accurate measurement and control of the electrode temperatures while effectively irrigating the device and target areas.

Abstract: A vaginal speculum which includes a fixed blade and a movable blade. The movable blade designed to be extended or retracted as required in order to adjust to the length of the vaginal canal of the patient undergoing surgery. A vaginal speculum is further designed with a blade angle mechanism and a blade pivoting mechanism which allows and controls the angle and rotation of the blades in relation to its base. Vacuum connection and a light can also be provided.

Abstract: One embodiment is a lead introducer including an outer needle, an inner needle, a splittable member, and an annular seal member. The outer needle, inner needle, and splittable member each include a body and hub. The splittable member fits over the outer needle body and the inner needle body and can be separated longitudinally. The splittable member hub receives at least portions of both the inner needle hub and the outer needle hub within the splittable member hub. The annular seal member is formed by either a) the inner needle hub or b) a combination of the inner needle hub and outer needle hub. The annular seal member forms a fluid-resisting seal with the interior surface of the splittable member hub when the portions of the inner needle hub and outer needle hub are received within the splittable member hub.

Abstract: A pressure activated valve for controlling the flow of fluid through a medical device, the pressure activated valve comprises a housing including a lumen extending therethrough and a flow control membrane extending across the lumen of the housing to control the flow of fluid through the lumen by opening when a pressure threshold has been reached.

Abstract: Embodiments provide methods and systems for treating aneurysms using filling structures filled with a curable medium. An embodiment of a method comprises positioning at least one double-walled filling structure across the aneurysm and filling the structure(s) with a filling medium so that an outer wall conforms to the inside of the aneurysm and an inner wall forms a generally tubular lumen to provide for blood flow. The lumen is supported with a balloon or other expandable device while and/or after filling. The pressure within the structure and/or in the space between an external wall of the structure and the aneurysm wall is monitored and a flow of the medium into the structure is controlled responsive to the pressure. The pressure can also be used to determine a filling endpoint. The medium is hardened while the lumen remains supported by the balloon. The balloon is then removed after the medium hardens.

Abstract: Surgical drains and methods for using the same for draining a body cavity are provided. Aspects of the surgical drains of the invention include an elongated structure having a proximal end and a distal end and a lumen configured to drain a substance from the body cavity. The distal end is configured to be placed in a body cavity and change in diameter when present in the body cavity from a first diameter to a second diameter that is smaller than the first diameter, where the change in diameter is mediated by a diameter-varying element. Aspects of the invention further include sheaths configured to be disposed around surgical drains, such as surgical drains of the invention, and methods of using the surgical drains and sheaths. The devices and methods of the invention find use in a variety of applications.

Abstract: A tympanostomy tube containing a polymeric material and a drug is described. The polymeric material may comprise a non-resorbable polymer and a water-soluble polymer. The drug may be released when the device is contacted by an aqueous liquid such as middle ear exudate during otitis media. The implant may contain sufficient drug to treat multiple episodes of otitis media or to catch subsequent episodes in their early stages as a prophylactic. The device may be hydrophilic and further may contain a surfactant. The implant may be porous. The implant may have enhanced surface area at places exposed to middle ear liquid and may have enlarged mass so as to contain an increased total amount of drug. Intentional reorientation of the patient's head may aid in moving drug-containing liquid around the middle ear cavity. Similar implants can be used in other mucosal cavities.

Abstract: A device for detecting rhinitis in a human subject includes an inflatable member that, in a first state, is configured to be introducible into the nasal cavity of the human subject; an expansion member configured to expand the inflatable member to an expanded, second state within the nasal cavity such that the inflatable member abuts against the tissue of the nasal cavity, and a pressure sensing member configured to measure a pressure exerted on the inflatable member by the tissue of the nasal cavity. A system for detecting rhinitis and methods for analyzing tissue response pressure, detecting rhinitis, predicting the efficacy of a planned rhinitis treatment and evaluating the efficacy of a previous rhinitis treatment are provided.

Abstract: A trans-femoral implant includes an anchor assembly and a balloon assembly configured to be separately delivered to an implant site within a heart. Once delivered, the anchor assembly and balloon assembly may be coupled to form an implant within the heart. The balloon anchor may include a fluid inflatable balloon that may be selectively filled via a balloon filling valve. The balloon assembly may further include a latching mechanism that may couple with a distal end of the anchor assembly, such that the length of the implant may be adjusted within the heart.

Abstract: This mucosa separation apparatus includes a first insertion portion inserted to the interior of a subject, an expansion portion disposed on a head portion of the first insertion portion, and which expands by infusion of a fluid, a passage formed within the first insertion portion and connected to the expansion portion, for supplying the fluid to the expansion portion, and a curving portion which makes a head portion of an instrument inserted to the interior of the subject curve with respect to a part of the instrument which is closer to a base portion of the instrument than the head portion thereof.

Abstract: The present invention provides minimally invasive devices and methods for accessing the sinuses and their surrounding structures for surgery and other treatments. The anterior ethmoid and maxillary sinuses are accessed and treated under minimal anesthesia with little or no postoperative limitation of activity or adverse symptoms. Direct visual verification of the sinuses and their natural ostia is utilized. Other paranasal sinuses may be treated by this method as well. The sinuses, in particular the maxillary and anterior ethmoid, are accessed via a direct anterior to posterior axis and the natural ostia of those sinuses is directly visualized for placement of a guide-free dilator, in the desired location within the natural ostia. That access to the maxillary ostium is accomplished by the anterior transuncinate “keyhole” approach in which a hole is punched in the uncinate process with the described devices according to the described methods.

Abstract: A device for detecting rhinitis in a human subject includes an inflatable member that, in a first state, is configured to be introducible into the nasal cavity of the human subject; an expansion member configured to expand the inflatable member to an expanded, second state within the nasal cavity such that the inflatable member abuts against the tissue of the nasal cavity, and a pressure sensing member configured to measure a pressure exerted on the inflatable member by the tissue of the nasal cavity. A system for detecting rhinitis and methods for analyzing tissue response pressure, detecting rhinitis, predicting the efficacy of a planned rhinitis treatment and evaluating the efficacy of a previous rhinitis treatment are provided.

Abstract: A guidewire system for insertion into a vascular system of a human or an animal so as to form a guide for guiding a catheter to a predetermined position. The system comprises a support catheter bounding a lumen for receiving at least a portion of the guidewire. The support catheter comprises a guidewire engagement structure for engaging the guidewire inside the lumen. The engagement structure in engaged condition causes the guidewire and the support catheter to be held mutually positioned at least in longitudinal direction thereof.

Abstract: The present invention relates to a valve system for an inflatable portion of an indwelling medical device and more particularly to a valve system for fluid regulation of a catheter comprising a fluid inflatable portion that undergoes pressure changes within the body during use. The present invention also relates to methods of treatment using said valve system and indwelling medical devices comprising said valve systems.

Abstract: A valve configured for a lumen of medical device is provided. The valve includes a valve body that may be elastically deformed from a first configuration to a second configuration. The valve body includes a lumen having a closed configuration and an open configuration. The lumen may be actuated from the closed configuration to the open configuration by elastically deforming the valve body from the first configuration to the second configuration. The valve body may include a portion configured to form a seal with an interior surface of a lumen of a medical device.

Abstract: An intraluminal occluding catheter and method for preventing the loss of gas insufflation from a physiological lumen during a medical procedure is presented. The intraluminal occluding catheter is generally comprised of a catheter shaft having a flexible balloon affixed on a distal intraluminal end and a plurality of independent channels extending through the catheter shaft from the external proximal end to the distal intraluminal end. Once inserted into a physiological lumen such as the bowel, the intraluminal occluding catheter controls the loss of insufflation proximally thereby improving the safety and efficiency of TAMIS as well as allowing for more controlled gas exchange to clear smoke or vapor.

Abstract: An apparatus is provided that is operable in different modes to perform various functions for treating a body lumen. The apparatus includes a shaft including proximal and distal ends, a lumen extending therebetween, and a balloon on the distal end. The apparatus includes a valve on the distal end that selectively opens or closes an outlet communicating with the lumen. With the valve open, fluid introduced into the lumen exits the outlet into a body lumen. With the valve closed, fluid introduced into the lumen expands the balloon. The valve may be biased to be closed, e.g., by a spring element disposed within the balloon. Optionally, the apparatus also includes an actuator for expanding a helical member within the balloon interior, e.g., either before or after expanding the balloon, such that the helical member and balloon may adopt an expanded helical shape for removing material within a body lumen.

Abstract: Apparatus and methods are provided for delivering fluid into a body lumen during a medical procedure. A distal end of an apparatus may be introduced into a body lumen, and a valve on the distal end may be opened to deliver fluid through a first lumen into the body lumen, e.g., contrast and/or other diagnostic or therapeutic agents. The valve may be closed, and a procedure may be performed within the body lumen, e.g., using a treatment element carried on the distal end. For example, the treatment element may include a balloon that may be inflated when fluid is delivered through the first lumen with the valve closed. Optionally, a prosthesis, energy source, drug platform, and the like may be carried by the balloon for treating the body lumen. In various embodiments, the valve may be located proximal or distal to the treatment element.

Abstract: A weeping balloon catheter includes a catheter having an elongate tubular body defining a medical device lumen and a liquid delivery lumen. A dilation balloon is disposed at a distal end of the elongate tubular body and is in fluid communication with the liquid delivery lumen. The dilation balloon includes a fluid communication channel through an outer wall of the dilation balloon. A flow restriction member is positioned along the fluid communication channel and has an open position permitting fluid communication along the fluid communication channel and a closed position blocking fluid communication along the fluid communication channel. A drug delivery path of the weeping balloon catheter is defined by the liquid delivery lumen and the dilation balloon.

Abstract: A catheter assembly may be provided with a catheter body and an inflatable balloon. The catheter body has a proximal end, a distal end and a balloon inflation lumen. The inflatable balloon is attachable to the distal end of the catheter body. The balloon has an inner surface that at least partially defines an interior volume. The balloon is configured such that the interior volume can be in fluid communication with the inflation lumen of the catheter body to inflate the balloon. The balloon also has a proximal surface and a distal surface. The balloon is provided with a channel that extends through the balloon. The channel is configured to provide fluid communication between the proximal surface of the balloon and the distal surface of the balloon. Other catheter assemblies and methods of use are also disclosed.

Abstract: Embodiments of aortic occlusion devices are described herein that include radially expandable and collapsible proximal and distal end portions, such as annular self-expanding stents or frames, that are configured to radially expand within an aorta to secure the device within the aorta. The devices can also include a catheter extending axially between the distal end portion and the proximal end portion and a porous covering, or filter, positioned around the catheter and between the proximal end portion and the distal end portion and configured to filter emboli from blood flowing into upper-body arteries. The device can further include a one-way valve positioned at or adjacent to the distal end portion of the device and configured to restrict retrograde blood flow through the device toward the heart.

Abstract: The body has a fluid inlet port for receiving pressurized fluid and a fluid outlet port connected to the retention balloon. A first passage connects the fluid inlet port and the fluid outlet port. A second passage in the body is connected to the balloon fluid return path and is at the pressure of the retention balloon. A valve prevents fluid flow through the first passage when actuated. The valve includes a pressure-responsive member movable to a position to obstruct fluid flow in response to fluid pressure in the second passage exceeding the predetermined level. Flexible means such as a membrane defines a normally open portion of the first fluid passage, which is closed by the moveable means bearing on the membrane when pressure exceeding the predetermined level actuates the valve.

Abstract: A device for transanally introducing an infusion into the rectum of a patient, the device comprising an inflatable balloon having a waisted shape, two terminal sections of larger radius and, a middle section of a reduced radius, and is placed transanally, the distally adjoining radially enlarged balloon section being placed intrarectally and the proximally adjoining radially enlarged balloon section extracorporeally, wherein both balloon ends taper to the dimension of a shaft supporting the balloon and are fixed on the surface of the shaft such that as the balloon is filled, the two enlarged balloon sections move toward each other in opposite axial directions, and wherein the two radially enlarged balloon sections are enlarged relative to the middle balloon section, such that when the balloon is placed transanally, during the filling process the two radially enlarged balloon sections draw down over the middle, balloon section and contact each other, and to a method for filling the catheter balloon.

Abstract: A pressure relief apparatus for a balloon dilation catheter having a shaft with a dilation balloon attached to the distal end of the shaft and an inflation/deflation lumen for inflating and deflating the balloon includes a pressure relief port formed through the wall of the inflation/deflation lumen with a pressure relief member secured across the pressure relief port to form a fluid tight seal such that the fluid tight seal formed by the pressure relief member fails at a predetermined pressure to release pressure from the inflation/deflation lumen through the pressure relief port.

Abstract: This invention is new apparatuses and methods for treatments to be used from inside conduits or biological pathways. Examples of the biological pathways in which these new apparatuses and methods may be used include arteries, veins, and respiratory ways. Multi-purpose catheters (10) and catheter systems using structures including wires (2108), balloons (2150), and cords (2204) are described as well as methods to use such catheters and catheter systems. One of the embodiments is a configurable wire system which carries or transports radioactive sources. The wire is used in conjunction with a closed-end channel catheter.

Abstract: A feeding tube with an inflatable balloon component, a kit containing the feeding tubing, and a method for intubating a patient to deliver the feeding tube to a desired location for delivering nutrients and/or medication to the patient are described herein.

Abstract: A tissue ablation device comprising a balloon catheter, or other expandable element, wherein said expandable element is comprised of a semipermeable membrane. The balloon membrane is expanded by an osmotically active solution to contact a vascular endothelium, or other desired tissue, whereupon the resultant osmotic gradient affects a water flux from the vascular endothelium, or other desired tissue, across the semipermeable membrane and towards the osmotically active solution.

Abstract: One embodiment provides a method implemented by a powered inflation device to prepare a balloon catheter for use during a medical procedure. In this embodiment, the method includes drawing an amount of medical fluid from a fluid reservoir into the inflation device during a first motorized operation of the inflation device, removing an amount of air from the balloon catheter during a second motorized operation of the inflation device, and injecting the amount of medical fluid from the inflation device into the balloon catheter during a third motorized operation of the inflation device to inflate a balloon located at a distal end of the balloon catheter. The powered inflation device may be a stand-alone device in one embodiment. In one embodiment, the powered inflation device is coupled to an angiographic injector system. When it is coupled to an angiographic injector system, the balloon inflation device and the injector system may be controlled by a common control panel, or console, in one embodiment.

Abstract: Medical devices for delivering a bioactive agent and methods of use thereof are provided. The device includes a balloon having micro-needles for delivery of the bioactive agent.

Abstract: A catheter includes an elongate body having first and second chambers extending within the elongate body from a proximal end to an intermediate section, the first chamber having a first opening and the second chamber having a second opening at the intermediate section. The catheter also includes a valve structure that may have first and second barrier elements to open or close the first and second openings, respectively. The first and the second barrier elements may be coupled by a connecting structure moving within an opening in a guide structure. Alternatively, the first and the second barrier elements may be coupled in a U-shaped structure that moves over the guide structure. To permit flushing of the chambers when the first and second openings are closed, the first and second chambers may also be connected by a connecting channel defined by an opening in a wall of the elongate body.

Abstract: Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.

Abstract: Apparatus and methods are provided for managing delivery of fluid into a vessel. A balloon catheter with a 3-way valve is introduced into an occluded vessel. The 3-way valve permits fluid, such as a contrast dye, to be injected into the vessel lumen. The valve is also configured to permit the balloon portion of the catheter to be inflated by means of the same lumen used to inject the contrast dye into the vessel. Bloodstream pressure can also be measured before and after dilation to confirm the procedure was successful. This apparatus and method provides for a quick, safe, and reliable treatment of an occluded vessel, among other things and works with known and later developed systems.

Abstract: A method for synergistic mitigation of reperfusion injury after an ischemia event in a subject.

Abstract: Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.

Abstract: A rectal medication administration device includes a tube, a balloon, a first valved port, and a second valved port. The tube includes a first lumen, a second lumen, and a plurality of holes extending from the first lumen therethrough. The balloon is proximal to the holes, is in communication with the second lumen, and is configured to be inflated to hold the tube in place within a patient's rectum. The first valved port is in communication with the first lumen and opens when connected to a first syringe or infusion set to provide medication transmission therethrough and closes when the first syringe or infusion set is withdrawn. The second valved port is in communication with the second lumen and opens when connected with a second syringe or infusion set to provide fluid to inflate the balloon and closes when the second syringe or infusion set is withdrawn.

Abstract: Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.

Abstract: An enteral feeding tube provides a conduit for the flow of liquid nutritional material. Most of the enteral feeding tube that is external to the patient is generally horizontal when the device is positioned in a stoma of a user lying in a prostrate position. A housing surrounds the horizontal portion enteral feeding tube, provides a low profile, aids in holding the enteral feeding tube in place, and protects the enteral feeding tube. The bottom surface of the housing comprises a resilient material that contacts the skin of the patient. The enteral feeding tube comprises a balloon that is positioned in the stomach to retain the device in the stomach. An air conduit extends generally vertically from an upper portion of the housing and through the enteral feeding tube to communicate with the balloon.

Abstract: A device for performing a medical procedure is provided. The device includes an elongate catheter disposed between a distal end portion and a proximal end portion, with a central portion therebetween. A central portion of the catheter includes parallel first and second lumens therethrough, wherein the first lumen extends through in the distal end portion and the second lumen extends through the distal end portion. A fluid input connection is provided along with a selection valve stem disposed within a valve housing.

Abstract: Apparatuses and methods for medication administration via a body cavity. In one aspect, a medication administration device includes: a tip portion having a plurality of holes and a balloon defining a balloon cavity. When the balloon is deflated the tip portion can be inserted into a body cavity, such as the rectum, to allow medication delivery through the holes in the tip portion. When inflated, the balloon can prevent the tip portion from being withdrawn from the body cavity and/or hold dispersed medication within the body cavity. The device further includes a port portion that has a first port and a second port, and an elongated tubular portion that is coupled between the tip portion and the port portion. The tubular portion has a first lumen connecting the first port to the plurality of holes in the tip portion, and a second lumen connecting the second port to the balloon cavity.

Abstract: A method of forming and enlarging a percutaneous penetration is provided. The method includes the step of providing a radially expandable dilation assembly having a needle assembly removably inserted in a axial lumen thereof. The radially expandable dilation assembly includes a radially expandable sleeve body defining a lumen and an introducer seal disposed across the lumen and defining an opening formed therein. The method further includes the steps of penetrating the radially expandable dilation assembly and needle assembly through tissue to a target surgical site, withdrawing the needle assembly from the radially expandable dilation assembly, and inserting an expansion assembly through the opening formed in the introducer seal and into the axial lumen of the radially expandable dilation assembly.

Abstract: Catheter comprising an inner tubular member defining a fluid lumen and inflation lumen therein. An exterior surface of the inner tubular member defines a fluid flow port in fluid communication with the fluid lumen and located along a region of the inner tubular member. Catheter further includes an outer member having a distal section movable relative to the inner tubular member and having an interior surface. A piston balloon is coupled to the inner tubular member distal to the fluid flow port and is in fluid communication with the inflation lumen. A pressure chamber is in fluid communication with the fluid flow port. Fluid introduced through the inflation lumen inflates the piston balloon to seal against the interior surface and fluid introduced through the fluid flow port and into the pressure chamber applies a force to urge at least the distal section of the outer member in a proximal direction.

Abstract: An apparatus and method for controlling inflation pressure, pressurization rate, and volumetric flow rate of a balloon during deployment of a stent or scaffold is disclosed.

Abstract: Devices and methods for balloon delivery of rapamycin and other hydrophobic compounds to the wall of blood vessels. Balloon catheters, such as those used for balloon angioplasty, are modified with the addition of a reservoir of dry micelles, disposed at a suitable location within the balloon or catheter. The reservoir may be installed within the angioplasty balloon, within a lumen in communication with the angioplasty balloon, either as a loose or packed powder or as a film coating. The micelle preparation is reconstituted and the micelles are mobilized when the aqueous solution used to inflate the balloons is injected into the catheter. The micelles are infused into tissue surrounding the balloon when pressurized fluid within the balloon leaks through the wall of the balloon.

Abstract: A balloon catheter having an elongated catheter shaft defining a fluid drainage lumen and a balloon inflation lumen. The balloon catheter includes a fluid drainage port disposed about the distal end of the catheter shaft in fluid communication with the fluid drainage lumen, and a balloon inflation port disposed about the distal end of the catheter shaft in fluid communication with the balloon inflation lumen. A balloon portion is disposed about the distal end of the catheter shaft in fluid communication with the balloon inflation port. A release device is disposed in fluid communication with the balloon portion and the fluid drainage lumen, and includes an activating member. A tether is attached to the activating member of the release device. Tension applied to the tether activates the release device, enabling fluid flow from the balloon portion into the fluid drainage lumen and out of the body.

Abstract: An instrument configured to prepare a penis for implantation of a penile prosthetic includes a rigid shaft extending between a proximal end and a distal end that is insertable into the penis, and an expandable member coupled to a distal end portion of the shaft. The expandable member is movable between a first position having a first diameter that is substantially equal to a diameter of the rigid shaft and a second position having a second diameter that is larger than the diameter of the rigid shaft and configured to dilate tissue of the penis.

Abstract: The present invention relates to a balloon catheter system for draining and/or supplying fluid from/into hollow organs, body cavities or cysts, comprising a conduit catheter with an open distal end, a hollow needle guided in a separate guide conduit and a balloon surrounding the catheter stem at the distal end of the conduit catheter. The conduit catheter with the hollow needle can be inserted from outside into the hollow organ via a guide catheter, into the body cavity or cyst, the balloon can be filled with filling medium via the hollow needle through an opening formed in the guided duct and provided in the lumen of the balloon, and it can be fixed in the hollow organ, body cavity or cyst. The hollow needle can be removed from the guide duct after filling the balloon. The balloon and the conduit catheter remain in the hollow organ, body cavity or cyst.