WO1996035395A1 - A device for maintaining a passage for urine through the prostate - Google Patents

A device for maintaining a passage for urine through the prostate Download PDF

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Publication number
WO1996035395A1
WO1996035395A1 PCT/SE1996/000607 SE9600607W WO9635395A1 WO 1996035395 A1 WO1996035395 A1 WO 1996035395A1 SE 9600607 W SE9600607 W SE 9600607W WO 9635395 A1 WO9635395 A1 WO 9635395A1
Authority
WO
WIPO (PCT)
Prior art keywords
prostate gland
catheter
tissue
sleeve
prostate
Prior art date
Application number
PCT/SE1996/000607
Other languages
French (fr)
Inventor
Magnus Bolmsjö
Original Assignee
Lund Instruments Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lund Instruments Ab filed Critical Lund Instruments Ab
Priority to US08/952,379 priority Critical patent/US6119045A/en
Priority to AU57096/96A priority patent/AU5709696A/en
Priority to DE69630302T priority patent/DE69630302T2/en
Priority to EP96915287A priority patent/EP0835082B1/en
Publication of WO1996035395A1 publication Critical patent/WO1996035395A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/18—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves
    • A61B18/1815—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by applying electromagnetic radiation, e.g. microwaves using microwaves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/88—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure the wire-like elements formed as helical or spiral coils
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/95—Instruments specially adapted for placement or removal of stents or stent-grafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F7/00—Heating or cooling appliances for medical or therapeutic treatment of the human body
    • A61F7/12—Devices for heating or cooling internal body cavities
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/08—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by means of electrically-heated probes
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A61B2017/00274—Prostate operation, e.g. prostatectomy, turp, bhp treatment
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00005—Cooling or heating of the probe or tissue immediately surrounding the probe
    • A61B2018/00011—Cooling or heating of the probe or tissue immediately surrounding the probe with fluids
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00315—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for treatment of particular body parts
    • A61B2018/00547—Prostate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
    • A61B2018/00577—Ablation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
    • A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
    • A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
    • A61B18/14—Probes or electrodes therefor
    • A61B2018/1405—Electrodes having a specific shape
    • A61B2018/1435—Spiral
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
    • A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2002/047—Urethrae
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2002/048—Ureters

Definitions

  • Prostate trouble such as benign prostate hyperplasia (BPH) or chronic prostatism are found normally among men. In many cases the symptoms are experienced as very troublesome, and therefore numerous different forms of treatments have been developed. Several of these result in transitory trouble for some time after treatment.
  • BPH benign prostate hyperplasia
  • chronic prostatism are found normally among men. In many cases the symptoms are experienced as very troublesome, and therefore numerous different forms of treatments have been developed. Several of these result in transitory trouble for some time after treatment.
  • the invention relates to a device for maintaining a passage for urine through the prostate gland as claimed in Claim 1.
  • the purpose of microwave treatment and other heat treatments of the prostate gland is to accomplish an amount of dead tissue in the gland.
  • the dead tissue is discharged in different ways, mainly through the urethra to ⁇ gether with urine.
  • An object of the present invention is to limit the risk of the troubles described above after treatment of the prostate gland. This object has been achieved according to characteristics of claim 1.
  • a stent or sleeve or similar element is in ⁇ serted in the prostate gland during the treatment.
  • the sleeve is left after a completed treatment and remains in position during the time the tissue is swollen.
  • the sleeve is performed as a helical winding made of a material which after some time delay is solved in contact with body tissue.
  • PGA polyglycol acid
  • a so called expanding stent or similar device such as a flexible tube, which after completed treatment is attached along the prostatic urethra within the prostate gland in such a way that it prevents the swollen tissue from closing the drain of urine, instead maintaining an opening for a drain of urine.
  • the Figure shows an embodiment according to the invention using a stent 12 formed as a helical thread made of a suitable material.
  • the stent 12 is arranged externally on a catheter 10 which during treatment is inserted through the urethra until a tip 15 has entered into the bladder 14.
  • a balloon 16 following the catheter 10 into the bladder 14 is expanded through a duct in the catheter 10 to hold the catheter 10 in position in relation to the prostate gland 13.
  • Within the catheter 10 there are provided means 11 for heating prostate tissue to such an extent that some tissue will be dead.
  • Said means 11 preferably comprise a microwave antenna. To avoid too much dead tis ⁇ sue in the vicinity of the antenna cooling ducts can be provided in the cathe ⁇ ter 10.
  • Another way of providing a desired heating is to circulate heated liq ⁇ uid in a section of the catheter 10 positioned within the prostate gland, or in a separate container of the catheter. It is also possible to provide separate heating means locally at the area of treatment and thereby to accomplish a local heating without any demand of cooling of surrounding tissue.
  • the heating means may e.g. be some type of antenna which emits radio signals of a frequency in the interval 0,1-1000 MHz, or a volume of a liquid which is heated by a heating element.
  • the sleeve or the stent 12 is provided on the outside of the catheter 10.
  • the stent 12 comprises a thread of a material that will be solved in the tissue.
  • the thread is winded in a helical winding.
  • the inner diame ⁇ ter of the stent 12 is somewhat larger than the outer diameter of the catheter 10 to allow the stent 12 to slide comparatively freely on the outside of the catheter, and the outer diameter of the stent 12 is somewhat larger than the inner dimensions of the urethra through the prostate gland to fix the stent 12 to an appropriate extent within the prostate gland.
  • the stent 12 can also be formed as a grid or a fabric.
  • the stent 12 is passive and does not affect in any way the result of the treatment.
  • the balloon 16 is emptied.
  • the catheter 10 is pulled out.
  • the catheter 10 is pulled out.
  • the catheter 10 into the desired location within the prostate gland wedgeshaped abutments 17 are provided on the outside of the catheter 10.
  • it is the chosen dimensions of the stent and catheter that prevent the stent from following the catheter out from the pros- tate gland.
  • a flexible tube having a balloon-formed outer section which can be inflated and accomplish a mechanic contact with the prostate gland to accomplish the desired holding in position. It is also possible to hold the tube in other ways. However, the tube should be removable so as to be removed when it is less required. Normally, the requirement is smaller within 1-3 months. If a tube is used in ⁇ stead of a stent it is appropriate to provide a tube with ducts for draining the prostate gland. In this way it will be possible for treated and rejected ne- crotized tissue to be passed off through the urine. In both embodiments the axial extension of the tube of the stent should not exceed the length of the prostate gland because the external sphincter adjacent to the rear part of the prostate gland should not be func ⁇ tionally disordered.
  • the tube In some cases it is appropriate to hold the stent 12 or the tube by means of a separate tool in an immediate connection to the completion of the treatment. If a non-absorbing tube is used the tube is removed manually as soon as the tissue no longer is swollen. In such an embodiment the tube can be provided with a thread which is available and which can be used to pull out the tube. It is also possible to catch the tube and then pull it out.
  • the expansion means may include bimetal or any similar means which by an expansion will reach a good contact to the tissue.

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, said catheter (10) being provided with means (11) for heating 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 said sleeve (12) is formed to remain in said 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.

Description

A Device for Maintaining a Passage for Urine through the
Prostate . _ . . . .
Technical field
Prostate trouble, such as benign prostate hyperplasia (BPH) or chronic prostatism are found normally among men. In many cases the symptoms are experienced as very troublesome, and therefore numerous different forms of treatments have been developed. Several of these result in transitory trouble for some time after treatment.
The invention relates to a device for maintaining a passage for urine through the prostate gland as claimed in Claim 1.
Prior art
The purpose of microwave treatment and other heat treatments of the prostate gland is to accomplish an amount of dead tissue in the gland. The dead tissue is discharged in different ways, mainly through the urethra to¬ gether with urine.
In connection with the treatment it is not unusual that an acute reten¬ tion of the urinary tracts occurs to the patient. This is a result of a swelling of the heat treated prostate gland which closes the drain of urine. The effect can remain for a few months and is very troublesome to the patient.
To ensure a drainage of urine also during this period of time it is pres¬ ently a normal step to insert a urine catheter during the time there is a swel¬ ling of the gland. Though there is a drain of urine according to this method the catheter as such is a problem to the patient.
Description of the invention
An object of the present invention is to limit the risk of the troubles described above after treatment of the prostate gland. This object has been achieved according to characteristics of claim 1. According to the invention a stent or sleeve or similar element is in¬ serted in the prostate gland during the treatment. The sleeve is left after a completed treatment and remains in position during the time the tissue is swollen. Preferably the sleeve is performed as a helical winding made of a material which after some time delay is solved in contact with body tissue. An example of such a material is polyglycol acid (PGA). It is also possible to use a flexible tube.
Detailed description
According to the invention there is used a so called expanding stent or similar device, such as a flexible tube, which after completed treatment is attached along the prostatic urethra within the prostate gland in such a way that it prevents the swollen tissue from closing the drain of urine, instead maintaining an opening for a drain of urine.
The Figure shows an embodiment according to the invention using a stent 12 formed as a helical thread made of a suitable material. The stent 12 is arranged externally on a catheter 10 which during treatment is inserted through the urethra until a tip 15 has entered into the bladder 14. A balloon 16 following the catheter 10 into the bladder 14 is expanded through a duct in the catheter 10 to hold the catheter 10 in position in relation to the prostate gland 13. Within the catheter 10 there are provided means 11 for heating prostate tissue to such an extent that some tissue will be dead. Said means 11 preferably comprise a microwave antenna. To avoid too much dead tis¬ sue in the vicinity of the antenna cooling ducts can be provided in the cathe¬ ter 10. Another way of providing a desired heating is to circulate heated liq¬ uid in a section of the catheter 10 positioned within the prostate gland, or in a separate container of the catheter. It is also possible to provide separate heating means locally at the area of treatment and thereby to accomplish a local heating without any demand of cooling of surrounding tissue. The heating means may e.g. be some type of antenna which emits radio signals of a frequency in the interval 0,1-1000 MHz, or a volume of a liquid which is heated by a heating element.
The sleeve or the stent 12 is provided on the outside of the catheter 10. The stent 12 comprises a thread of a material that will be solved in the tissue. The thread is winded in a helical winding. Preferably the inner diame¬ ter of the stent 12 is somewhat larger than the outer diameter of the catheter 10 to allow the stent 12 to slide comparatively freely on the outside of the catheter, and the outer diameter of the stent 12 is somewhat larger than the inner dimensions of the urethra through the prostate gland to fix the stent 12 to an appropriate extent within the prostate gland. The stent 12 can also be formed as a grid or a fabric.
During the treatment the stent 12 is passive and does not affect in any way the result of the treatment. After a completed treatment the balloon 16 is emptied. Then the catheter 10 is pulled out. To ensure that the stent 12 fol¬ lows the catheter 10 into the desired location within the prostate gland wedgeshaped abutments 17 are provided on the outside of the catheter 10. In the shown simple embodiment it is the chosen dimensions of the stent and catheter that prevent the stent from following the catheter out from the pros- tate gland.
It is also possible to accomplish the same function with a flexible tube having a balloon-formed outer section which can be inflated and accomplish a mechanic contact with the prostate gland to accomplish the desired holding in position. It is also possible to hold the tube in other ways. However, the tube should be removable so as to be removed when it is less required. Normally, the requirement is smaller within 1-3 months. If a tube is used in¬ stead of a stent it is appropriate to provide a tube with ducts for draining the prostate gland. In this way it will be possible for treated and rejected ne- crotized tissue to be passed off through the urine. In both embodiments the axial extension of the tube of the stent should not exceed the length of the prostate gland because the external sphincter adjacent to the rear part of the prostate gland should not be func¬ tionally disordered.
In some cases it is appropriate to hold the stent 12 or the tube by means of a separate tool in an immediate connection to the completion of the treatment. If a non-absorbing tube is used the tube is removed manually as soon as the tissue no longer is swollen. In such an embodiment the tube can be provided with a thread which is available and which can be used to pull out the tube. It is also possible to catch the tube and then pull it out.
To improve the transfer of heat between the heating means 11 and the tissue that is treated it may be appropriate to connect said means 11 to some type of heat conveying expansion means. The expansion means may include bimetal or any similar means which by an expansion will reach a good contact to the tissue.

Claims

1. A device for maintaining a passage through the prostate gland (13) after treatment by a catheter (10) inserted through the urethra to the prostate gland, said catheter (10) being provided with means (11) for heating prostate tissue, characterized in that a sleeve (12) is received over the catheter (10) to follow the catheter (10) during insertion into a desired position within the pros¬ tate gland, and that said sleeve (12) is formed to remain in that 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 within the prostate gland will swollen.
2. A device according to Claim 1 , characterized in that the sleeve (12) is made of a material which will be absorbed in the body tissue.
3. A device according to Claim 1 , characterized in that the sleeve (12) is provided with means that is controlled from outside the body to hold the position of the sleeve (12) in the prostate gland.
4. A device according to any of Claims 1-3, characterized in that the heating means (11) comprises an antenna for emitting electromagnetic ra¬ diation.
5. A device according to any of Claims 1-3, characterized in that the heating means (11) comprises a liquid container connected to a heating element for heating liquid enclosed in said container.
6. A device according to any Claims 1-3, characterized in that the heating means (11) is connected to expansion means, said means expand- ing when heated in the direction of surrounding prostate gland tissue so as to increase the transfer of heat to said tissue.
PCT/SE1996/000607 1995-05-12 1996-05-09 A device for maintaining a passage for urine through the prostate WO1996035395A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US08/952,379 US6119045A (en) 1995-05-12 1996-05-09 Device for maintaining a passage for urine through the prostate
AU57096/96A AU5709696A (en) 1995-05-12 1996-05-09 A device for maintaining a passage for urine through the pro state
DE69630302T DE69630302T2 (en) 1995-05-12 1996-05-09 A DEVICE FOR KEEPING THE URINE THROUGH THE PROSTATE
EP96915287A EP0835082B1 (en) 1995-05-12 1996-05-09 A device for maintaining a passage for urine through the prostate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9501777A SE510517C2 (en) 1995-05-12 1995-05-12 Device for maintaining passage through the prostate gland
SE9501777-8 1995-05-12

Publications (1)

Publication Number Publication Date
WO1996035395A1 true WO1996035395A1 (en) 1996-11-14

Family

ID=20398294

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1996/000607 WO1996035395A1 (en) 1995-05-12 1996-05-09 A device for maintaining a passage for urine through the prostate

Country Status (6)

Country Link
US (1) US6119045A (en)
EP (1) EP0835082B1 (en)
AU (1) AU5709696A (en)
DE (1) DE69630302T2 (en)
SE (1) SE510517C2 (en)
WO (1) WO1996035395A1 (en)

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US6119045A (en) 2000-09-12
DE69630302T2 (en) 2004-08-26
SE9501777D0 (en) 1995-05-12
AU5709696A (en) 1996-11-29
SE9501777L (en) 1996-11-13
DE69630302D1 (en) 2003-11-13
SE510517C2 (en) 1999-05-31
EP0835082B1 (en) 2003-10-08
EP0835082A1 (en) 1998-04-15

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