A ureteral stent is provided. The stent may include a first section having a first wall defining a first luminal section. The stent may further include a second section having a second wall defining a second luminal section. The second section can be enabled to substantially close at times external pressure is applied to the stent.

The described invention provides a ureteral stent device comprising a tubular structure comprising a proximal end and a distal end. The proximal end comprises a magnet, a magnetic tip, a magnetic coating, a magnetic metal, or a magnetic alloy. The distal end comprises a tapered tip and can form any one of a J-curl, a j-shape, or a pigtail loop for securing the distal end in a kidney. The proximal end is not secured in the bladder and terminates in the ureter.

A packaging system is provided. The packaging system may include a packaging body defining a cavity. The packaging system may also include a tissue cradle configured to be disposed within the cavity. The packaging system may also include a seal configured to be joined to the packaging body to fluidly seal the cavity. Such packaging systems may be used in the storage of wet-preserved or dry-preserved human or animal tissue. Also provided are a packaged tissue specimen and a method for packaging tissue.

A disposable device for treating a condition of a ureter or kidney having a cylindrical body about 1-2 mm in diameter by about 5 to 10 mm in length and having a top and bottom end. The body is made of absorbent material that expands upon contact with pharmaceutical agent and bodily fluids and includes a string connected to the bottom end of the body for removing the device. The device can be used to treat a condition of the ureter or kidney by inserting into the ureter or kidney, delivering a pharmaceutical agent, and removing the device after it has been impregnated with fluid. The device can be included in a kit with an insertion device and/or appropriate pharmaceutical agents.

A catheter configured to be deployed in a urinary tract of a patient includes a proximal portion configured to pass through a percutaneous opening and a distal portion including a retention portion. The retention portion is configured to be deployed in a kidney, renal pelvis, and/or bladder of the patient. The retention portion includes one or more protected drainage holes, ports or perforations and is configured, when deployed, to establish an outer periphery or protective surface area that inhibits mucosal tissue from occluding the one or more protected drainage holes, ports, or perforations upon application of negative pressure through the catheter.

A stent is disclosed that has an elongated body having a proximal end, a distal end, at least one open spiral channel formed on the exterior surface of the body to provide fluid communication between the proximal end and the distal end. The stent also has a central lumen open at the proximal and distal ends of the stent for the passage of a guide wire. A method for using the stent and a kit containing the stent are also disclosed.

A stent is disclosed that has an elongated body composed of a bioabsorbable polymer having a proximal end, a distal end, two open spiral channels formed on the exterior surface of the body to provide fluid communication between the proximal end and the distal end. The stent also has a central lumen open at the proximal and distal ends of the stent for the passage of a guide wire. A method for using the stent and a kit containing the stent are also disclosed.

A ureteral stent that includes a tubular member and a retaining end adapted to be placed inside a kidney or a bladder of a patient. The retaining end includes a plurality of loops. Each of the loops are centered about a loop axis, and two or more of the loop axes extend in different directions relative to other loop axes.

A stent is provided that includes a body extending between a distal and a proximal end. The body is defined by a plurality of elongated members, with each elongated member extending between a distal end that is coterminous with the distal end of the body and a proximal end that is coterminous with the proximal end of the body. Each of the plurality of elongated members are arranged so as to define a lumen extending along the length of the respective plurality of elongated members, the lumen extending between the distal and proximal ends of the body so as to form a lumen length. Each of the plurality of elongated members are configured to permit drainage of a fluid from within the lumen to an environment external the stent along the entire lumen length.

Apparatus and methods are described for dilating a portion of a urethra surrounded by an enlarged prostate. The apparatus includes dilation device, and a delivery device including a balloon. The delivery device is configured to deliver the dilation device and the balloon to the portion of the urethra, while the dilation device is disposed in a helical configuration on the delivery device. Upon the balloon and the dilation device being disposed at the portion of the urethra, the delivery device is configured to expand the balloon, thereby expanding the portion of the urethra, and to cause the dilation device to radially expand from the helical configuration to an arc configuration. Subsequently, the delivery device is configured to implant the dilation device, from outside the balloon, into tissue of the prostate surrounding the portion of the urethra, while the portion of the urethra is expanded by the balloon.