17 results about "Occlusion catheter" patented technology

This invention generally relates to a method for performing an endoscopic procedure. According to some aspects of the invention, the method comprises placing an endoscope shaft within a body cavity at a desired examination point, the endoscope shaft having a proximal end, mid shaft and a distal end, the distal end terminating in an endoscope tip, wherein the endoscope tip is proximal to the desired examination point, positioning a segment of a longitudinally opened overtube over the endoscope mid shaft, wherein the overtube including a longitudinal reclosable seam along an entire length of the overtube, an inner surface, an outer surface, a proximal end and a distal end, a positioning ring adjacent the distal end on the outer surface, at least one sealing band on the inner surface, and an independently positionable occlusion catheter terminating in an asymmetrical occlusion balloon; at least one handle at the proximal end and on the outer surface for grasping and manipulation of the overtube within the body cavity. The method further comprises closing the seam of the segment of the overtube positioned over the endoscope mid shaft to form a longitudinally closed overtube and move the closed overtube over the endoscope shaft as guide within the body cavity and repeat the closing and moving till the overtube reaches the desired examination point, inflating the positioning ring to create a seal between the outer surface of the overtube and a body cavity proximal to the endoscope tip, wherein when inflated the positioning ring expanded asymmetrically around the overtube, inflating the at least one sealing band to create a seal between the internal surface of the overtube and endoscope shaft, passing the independently positionable occlusion catheter terminating in the asymmetrical occlusion balloon through a passageway along the overtube to enter the body cavity at the end of the overtube, manipulating the independently positionable occlusion catheter to a selected point within the body cavity distal to the endoscope tip, inflating the occlusion catheter balloon to create seal between the occlusion catheter balloon and the body cavity, and creating a sealed examination compartment between the positioning ring, the asymmetrical occlusion balloon and the sealing band surrounding the distal end of the endoscope shaft.

A control system for an occlusion catheter having a balloon includes a fluid reservoir containing a fluid and a fluid connector connectable to the reservoir and to the catheter to provide fluid communication therebetween. The fluid connector has a pressure sensor integrated therein. A pump is configured to move the fluid between the reservoir and the balloon via the fluid connector. A controller is in electrical communication with the pump and the pressure sensor. The controller is configured to: (i) receive data from the pressure sensor, the data being indicative of a pressure within the balloon, and (ii) in an autonomous mode of operation, control the pump to alter a size of the balloon by driving fluid from the reservoir toward the balloon or withdrawing fluid from the balloon, the control of the pump being based, at least in part, on the data from the pressure sensor.

The utility model discloses a blood return prevention monitoring device for a PICC (Peripherally Inserted Central Catheter), and belongs to the technical field of PICC. Comprising a blocking catheter, the two ends of the blocking catheter are fixedly connected with an injection connecting pipe and a catheter connecting pipe respectively, the injection connecting pipe is used for being connected with an injector, the catheter connecting pipe is used for being connected with a venous indwelling catheter, a one-way valve structure is arranged in the blocking catheter, and when blood returns to the venous indwelling catheter, reverse pressure exists in the catheter, and the blood returns to the catheter. A blocking ball is pushed by resistance of a second spring to seal an injection connecting pipe, injection one-way conduction and blood return blocking effects are formed, a piston block extrudes a first spring along an L-shaped cavity due to reverse pressure in a catheter during blood return, a push rod is forced to push a resistor block to move along a resistor disc, the actual length of the two cables electrically connected with the resistor disc is reduced, and the service life of the two cables is prolonged. The resistance monitor can monitor the blood return phenomenon of the venous indwelling catheter, and can send out a blood return alarm instruction in time to remind medical staff to deal with the blood return phenomenon in time.

The utility model discloses a kind of gastric cavity plugging catheters of gastrostomy in the medical instrument technical field, the device increases plugging balloon and sealing clamping piece, can be held by inside and outside, hold stomach wall and skin to position the device, while plugging balloon seals and isolates the puncture of stomach wall inside gastric cavity, effectively avoid gastric juice to flow out, avoid gastric juice to overflow along the puncture and cause skin burning;Positioning baffle is also increased, can be unfolded inside duodenum, positioning baffle can position nutrition tube, avoid nutrition tube to slide and separate, can also effectively block pylorus, effectively avoid enteric digestive juice to enter stomach, and do not hinder gastric juice to flow into intestine normally, and by pressure relief port and pressure relief pipe, stomach is conveniently decompressed, effectively avoid that pressure is too high and nutrition liquid is refluxed to esophagus.

1. The name of the design product: balloon occlusion catheter sheath. 2. The use of the design product: occlusion catheter sheath kit for introducing guide wire, balloon and medical instrument into patient's blood vessel system in percutaneous interventional operation. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view 1.

1. The name of the design product: balloon occlusion catheter sheath. 2. The use of the design product: occlusion catheter sheath kit for introducing guide wire, balloon and medical instrument into patient's blood vessel system in percutaneous interventional operation. 3. The design points of the design product: in shape. 4. The picture or photo best indicating the design points: perspective view.

Various systems and methods are provided for reducing pressure at an outflow of a duct, such as the thoracic duct or the lymphatic duct, for example, the right lymphatic duct. A catheter system can be configured to be at least partially implanted within a vein of a patient in the vicinity of an outflow port of a duct of the lymphatic system. The catheter system includes first and second selectively deployable restriction members each configured to be activated to at least partially occlude the vein within which the catheter is implanted and to thus restrict fluid within a portion of the vein. The catheter system includes an impeller configured to be driven by a motor to induce a low pressure zone between the restriction members by causing blood to be pumped through the catheter when the restriction members occlude the vein.

The invention provides a vertebral artery stent. The vertebral artery stent is characterized by comprising a stent body, a blocking balloon assembly and a supporting balloon assembly; wherein the plugging balloon assembly comprises a plugging balloon and a plugging catheter which are connected with each other; a balloon body of the plugging balloon is arranged at the front end of the stent body, and the plugging catheter penetrates through the whole stent body and extends out of the rear end of the stent body; the supporting balloon assembly comprises a supporting balloon and a supporting catheter which are connected with each other; a balloon body of the supporting balloon is arranged in the stent body, and the supporting catheter extends out of the rear end of the stent body. The stent can effectively solve the problem of plaque flow guide in the stent implantation process.

A medical liquid delivery system (10) delivers a collection object (L) generated in a living body (B) to a medical bag (16) through a tube (14). The medical liquid delivery system (10) is provided with an occluding part (22) capable of blocking the circulation of the collection object (L) by occluding an intermediate part (143) of the tube (14). The medical liquid delivery system (10) further comprises a first state monitoring part (241) that monitors the state of the tube (14) at a first position (P1), and a second state monitoring part (242) that monitors the state of the tube (14) at a second position (P2). On the basis of the difference between a first state parameter at the first position (P1) and a second state parameter at the second position (P2), a control part (263) releases the blocked state of the tube (14) by the occluding part (22).

Systems and methods for delivery of therapeutic materials into targeted region of a vessel may include controlling the pressure within an occluded region. In any of these methods and apparatuses the method may include controlling the size and / or pressure of the occluded region by controlling a lateral expansion of one or both occluding balloons. In some cases one or both balloons may include a lateral expansion region configured to adjust the length of one or both balloons to controllably adjust the size of (and / or pressure within) an occluded region. In some cases this may be used to occlude / exclude one or more anatomical regions.

An occlusion catheter system is provided for at least partial occlusion of a vessel. The occlusion catheter system includes a proximal hub having an inflation connection port and an inflation pathway. An inflation catheter member is fluidly connected to the proximal hub. An occlusion balloon has a proximal balloon end and a distal balloon end, the proximal balloon end being fluidly connected to the inflation catheter member. A distal catheter member is connected to the distal balloon end and includes an atraumatic tip on a distal end thereof, the atraumatic tip having a substantially circular profile in one configuration. The occlusion balloon, the inflation catheter member and the distal catheter member have a greatest outer diameter of less than 7 Fr in an uninflated condition.

An inflation control system is provided for use with an occlusion catheter having an inflatable occlusion member for at least partial occlusion of a patient vessel. The inflation control system includes a fluid source in fluid communication with the inflatable occlusion member, a pressure source coupled to the fluid source and configured to move fluid between the fluid source and the inflatable occlusion member, and a controller operably coupled to the pressure source. The controller is configured to receive at least one patient vital sign as feedback and operate the pressure source to modulate an inflation volume of the occlusion member based, at least in part, on the feedback.

The system includes a catheter (10) and one or more fillers or plugs (400, 500, 600, 702, 704) configured to block a lumen (14) of the catheter. The catheter may include an elongated tube (12) having a distal end (12B) and defining multiple lumens (14). A distal tip structure (170) may be located adjacent the distal end. The plug is configured to be positioned within a first portion of a first lumen of the multiple lumens proximal to the distal tip. The plug may include an elliptical cross-sectional shape and may be formed from a biocompatible polymeric material, such as silicone, nylon, polyurethane, polyethylene terephthalate, latex, plastic, thermoset, or thermoplastic elastomer. The elliptical cross-sectional shape may have first and second apexes, and the first plug is configured such that either of the apexes can be positioned adjacent an upper side of the first lumen without causing distension of the lumen wall.

An interventional ostium occlusion catheter includes a catheter tube with at least one port at a first end, a tip at a second end, and a central lumen, with a positioning component and an occlusion component on the surface of the catheter tube close to the tip. A method of coronary intervention using the catheter includes maneuvering the catheter to an ostium; inserting the catheter into a coronary vessel; activating the positioning component and the occlusion component; and delivering an infusion via the lumen. An interventional system for improving management of ischemic cardiac tissue during acute coronary syndromes includes the catheter; a blood infusion device that delivers controlled reperfusate; and a ventricular unloading device that manipulates myocardial oxygen demand in a coronary chamber. The operator can mitigate reperfusion-related and oxygen-related tissue injury by precisely modulating oxygen re-exposure when re-establishing flow and when using a ventricular unloading device.

A balloon catheter includes an outer tube that has an inner surface and an inflation lumen and an inner tube that is disposed within the inflation lumen. The balloon catheter also includes a collar that has a proximal end coupled to a distal end of the outer tube, and a distal end. The collar is coupled to an edge of the distal end or the inner surface of the outer tube. The balloon catheter further includes a luminal space, which is defined by a space between the outer surface of the inner tube and the collar, and a balloon. The balloon has a proximal end coupled to the collar and a distal end coupled to the inner tube.

An infusion pumping mechanism includes a motor, a plurality of pump fingers and an opposing plate. Each finger of the pump fingers includes a body portion and a head portion. The head portion includes a tip that is configured to contact and occlude a tube installed in the pumping mechanism. The opposing plate includes an anvil with a plurality of force concentrators. A force concentrator of the plurality of force concentrators corresponds to a respective pump finger of the plurality of pump fingers. Additionally, the force concentrator includes a concentration surface configured to contact and occlude the tube. The force concentrator is aligned with a tip of the respective pump finger such that as the finger is directed towards the tube and contacts the tube, both the tip and the force concentrator provide pressure to opposite sides of the tube and at least partially occlude the tube.

The utility model relates to a kind of bronchus blocking catheter of anti-displacement blockage, the top end of the blocking catheter movably connects with the fixed strip for sealing and tightening cover tight component to blocking catheter;The clamping device includes the clamping component for clamping and fixing bronchus in cover tight device, and the driving component for driving two clamping components to move in opposite directions is arranged in cover tight device. By cover cap insertion to the top end of blocking catheter, then by two rotating fixed strip is clamped in clamping strip, cover cap can be covered and tightened, three elastic strips can be used to clamp and fix bronchus, then by hand wheel driving bidirectional screw rod is rotated, two threaded sleeve plates can be made along the two threaded portions on the rod body of bidirectional screw rod to bronchus close, while fixed sleeve plate can move along guide rod, and bronchus is clamped and fixed, to prevent bronchus from the risk of loosening and falling.