Patents Assigned to Prostalund Operations AB
  • Patent number: 7766899
    Abstract: An indwelling catheter is positioned in a urinary tract to drain urine from the bladder to a position distally adjacent to a sphincter muscle. A balloon of the catheter is inflated through an inflation tube extending through the urinary tract. A coiled section of the inflation tube contacts the constriction caused by the sphincter muscle. The balloon and the coiled section resist movement of the indwelling catheter while still permitting natural urination. The indwelling catheter is inserted by an insertion tool which is separably connected to the catheter. Once the indwelling catheter is positioned, the tool is disconnected and withdrawn from the urinary tract. Risks of blood clots obstructing the flow of urine through the indwelling catheter immediately following a surgical procedure on the prostate gland are avoided by flushing fluid through the insertion tool and the catheter to clear an internal urine flow passageway in the catheter.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: August 3, 2010
    Assignee: ProstaLund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin
  • Patent number: 7662145
    Abstract: A partial-length catheter, or an extendable tube or sleeve member of the catheter, is selectively movable within the prostatic urethra to open a urine drainage passageway through and obstructed portion of the prostatic urethra or to open the external urinary sphincter muscle and thereby discharge urine from the bladder. A control element is manipulated at a position exterior of the urinary canal to selectively move the catheter or the extendable tube or sleeve member, thereby selectively controlling urine discharge. The catheter may also be used to diagnose urinary retention problems caused by a weak bladder or a prostatic obstruction.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: February 16, 2010
    Assignee: ProstaLund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin, Per Andersson, Stephan Dymling
  • Patent number: 7041090
    Abstract: A device for the drainage of the bladder through the body's own urethra opening outside of the human body, comprising a tube-shaped body (10). The 5 tube-shaped body is comprised: to assume a first contracted position and for taken up within the bladder as well as a to assume a second partially extended position. At least one thread (14) extends between the bladder and an opening so that the tube-shaped body can be extended from the first position to the second position during 10 the application of a pulling force upon the thread. The tube-shaped body will return to the first position upon the release of the pulling force on the thread.
    Type: Grant
    Filed: October 12, 2001
    Date of Patent: May 9, 2006
    Assignee: Prostalund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin
  • Patent number: 6868290
    Abstract: A thermotherapy catheter for heat treating the prostate gland includes an O-ring positioned within a chamber between an outer tube and an interior heat generation device guide tube. The O-ring supports a distal end portion of a probe guide tube at a desired acute angle so that a temperature probe can be advanced from the end of the probe guide tube into the prostate gland at a predetermined desired acute angle for calculating tissue heating and tissue necrosis information from temperature sensors located on a distal end of the temperature probe. The O-ring also separates a still liquid chamber from a circulatory flow path so that heated liquid surrounding the generation device is applied effectively to heat the prostate gland, while the circulating cooling fluid effectively removes heat from a feed cable which supplies energy to the heat generation device.
    Type: Grant
    Filed: May 2, 2003
    Date of Patent: March 15, 2005
    Assignee: Prostalund Operations AB
    Inventor: Magnus Bolmsjö
  • Patent number: 6852105
    Abstract: A device for the drainage of the bladder through the body's own urethra opening outside of the human body, comprising a tube-shaped body (10). The tube-shaped body is comprised: to assume a first contracted position and for taken up within the bladder as well as a to assume a second partially extended position. At least one thread (14) extends between the bladder and an opening of the urethra and is attached at a first end of the tube-shaped body so that the tube-shaped body can be extended from the first position to the second position during the application of a pulling force upon the thread. The tube-shaped body in the second partially extended position extends in such a manner so as to exceed the distance between the bladder and the point of the urethra's closing. The tube-shaped body is comprised in such a manner that it will return to the first position upon the release of the pulling force on the thread.
    Type: Grant
    Filed: July 30, 2003
    Date of Patent: February 8, 2005
    Assignee: Prostalund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin
  • Patent number: 6626876
    Abstract: A device for the drainage of the bladder through the body's own urethra opening outside of the human body, comprising a tube-shaped body (10). The tube-shaped body is comprised: to assume a first contracted position and for taken up within the bladder as well as a to assume a second partially extended position. At least one thread (14) extends between the bladder and an opening of the urethra and is attached at a first end of the tube-shaped body so that the tube-shaped body can be extended from the first position to the second position during the application of a pulling force upon the thread. The tube-shaped body in the second partially extended position extends in such a manner so as to exceed the distance between the bladder and the point of the urethra's closing. The tube-shaped body is comprised in such a manner that it will return to the first position upon the release of the pulling force on the thread.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: September 30, 2003
    Assignee: ProstaLund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin
  • Patent number: 6596017
    Abstract: Transurethral catheter (10) for the heat treatment of body tissue surrounding the catheter, including an elongated light carrier (11). A light receiving and light distributing elongated light probe (12) is operatively connected to said light carrier (11), and the light probe (12) comprises light reflecting surfaces (13) for preventing received light from escaping from the probe (12). At least one light emitting section (14) is formed in the probe (12) for emitting light into said body tissue.
    Type: Grant
    Filed: August 27, 2001
    Date of Patent: July 22, 2003
    Assignee: Prostalund Operations AB
    Inventors: Magnus Bolmsjö, Christian Sturesson, Stefan Andersson-Engels
  • Patent number: 6584361
    Abstract: A device for heat treatment of prostate, comprising a treatment catheter with a fluid reservoir and heating means which is arranged within the treatment catheter and emits electromagnetic radiation for heating of the surrounding bodily tissue. The fluid reservoir constitutes an integrated part of the catheter for treatment and is positioned in the catheter so that, when inserted in a patient, it extends to cover the area heated by the heating means between the prostatic apex and bladder neck. The fluid reservoir also constitutes a closed chamber which is connectable via a channel passing through the catheter for treatment. A stop for the heat-absorbing means is embodied distal to said heating means and distal to said heat reservoir.
    Type: Grant
    Filed: November 5, 2001
    Date of Patent: June 24, 2003
    Assignee: ProstaLund Operations AB
    Inventor: Magnus Bolmsjö
  • Patent number: 6524270
    Abstract: A device for treatment of the prostate, comprising a catheter for treatment which is inserted through the urethra. The treatment catheter being provided with a front portion that comprises an expandable container for fixation of treatment catheter with a front portion in the urinary bladder and with a drainage channel ending in the front portion for drainage of urinary bladder. At least one hollow tip is provided to be extendible from treatment catheter into the surrounding prostate tissue of catheter. The tip is connected with a syringe for supply of an astringent and analgesic medicine. By this method, tip is extended from the treatment catheter into the surrounding prostate tissue of catheter. An astringent and analgesic medicine is supplied from the syringe and administered to the prostate tissue through the tip.
    Type: Grant
    Filed: March 16, 2000
    Date of Patent: February 25, 2003
    Assignee: Prostalund Operations AB
    Inventors: Magnus Bolmsjö, Sonny Schelin
  • Patent number: 6445957
    Abstract: A device for supply of heat to body tissue, comprising a heating device (10) and a first temperature transducer (11) which is insertable in the body tissue, the heating device (10) being connected with an energy supply unit (13) governed by a control unit (14) via a catheter for treatment (12) which is insertable in a body cavity and said first temperature transducer (11) being operatively connected to the control unit (14). The control unit (14) is operatively connected with first memory means (15) for storage of data corresponding to the survival of cells as a function of cell temperature.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: September 3, 2002
    Assignee: Prostalund Operations AB
    Inventor: Magnus Bolmsjo
  • Patent number: 6366818
    Abstract: The invention relates to a method and a device for heat treatment of prostatic tissue. The device comprises a treatment catheter with an expandable fluid reservoir and first heating means which is arranged within the treatment catheter and emits electromagnetic radiation for heating of the surrounding prostatic tissue. A second heating means is provided in thermal contact with the liquid in the fluid reservoir for heating of the liquid in the fluid reservoir as well as the tissue located in the immediate surrounding of the reservoir.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: April 2, 2002
    Assignee: Prostalund Operations AB
    Inventor: Magnus Bolmsjo
  • Patent number: 6119045
    Abstract: A device for maintaining a passage through the prostate gland (13) after treatment of a catheter (10) inserted through the urethra into the prostate gland, the catheter (10) being provided with means (11) for heating the prostate gland. A sleeve (12) is received over the catheter (10) so as to follow the catheter (10) during insertion into a desired position within the prostate gland, and the sleeve (12) is formed to remain in the desired position when the catheter is removed from the prostate gland, thereby maintaining a passage having a predetermined lower inner diameter through the prostate gland when tissue in the prostate gland swells.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: September 12, 2000
    Assignee: ProstaLund Operations AB
    Inventor: Magnus Bolmsjo
  • Patent number: 5964791
    Abstract: A device for heat treatment of body tissue, including heating means (10) for local heating of the body tissue, and temperature sensing means (11) for sensing the tissue temperature, said heating means being enclosed in a catheter (12). A first temperature sensing means (11) is connected to a first carrier (13), which is made to be advanced through a first opening in catheter (12), and said first carrier (13) is equipped with a pointed tip for insertion into such body tissue that is to be heat-treated.
    Type: Grant
    Filed: November 14, 1997
    Date of Patent: October 12, 1999
    Assignee: ProstaLund Operations AB
    Inventor: Magnus Bolmsjo
  • Patent number: D468420
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: January 7, 2003
    Assignee: Prostalund Operations AB
    Inventor: Magnus Bolmsjo
  • Patent number: RE38299
    Abstract: A device for heat treatment of body tissue, including heating means (10) for local heating of the body tissue, and temperature sensing means (11) for sensing the tissue temperature, said heating means being enclosed in a catheter (12). A first temperature sensing means (11) is connected to a first carrier (13), which is made to be advanced through a first opening in catheter (12), and said first carrier (13) is equipped with a pointed tip for insertion into such body tissue that is to be heat-treated.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: November 11, 2003
    Assignee: ProstaLund Operations AB
    Inventor: Magnus Bolmsjö
  • Patent number: RE40472
    Abstract: The invention relates to a method and a device for heat treatment of prostatic tissue. The device comprises a treatment catheter with an expandable fluid reservoir and first heating means which is arranged within the treatment catheter and emits electromagnetic radiation for heating of the surrounding prostatic tissue. A second heating means is provided in thermal contact with the liquid in the fluid reservoir for heating of the liquid in the fluid reservoir as well as the tissue located in the immediate surrounding of the reservoir.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: August 26, 2008
    Assignee: ProstaLund Operations AB
    Inventor: Magnus Bolmsjö