Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS3768102 A
Publication typeGrant
Publication dateOct 30, 1973
Filing dateFeb 3, 1972
Priority dateFeb 3, 1972
Publication numberUS 3768102 A, US 3768102A, US-A-3768102, US3768102 A, US3768102A
InventorsGett C Kwan, S Jacobsen
Original AssigneeUniv Utah
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Implantable artificial urethral valve
US 3768102 A
Abstract
An artificial urethral valve for implantation in the bladder or urethra of an incontinent person comprising a movable valve occluding means which is retained in the closed position by means of a spring that requires a relatively high opening force and then substantially collapses to allow the passage of bladder contents through the valve. The valve occluding member retaining spring requires a relatively high breakaway or opening force to open. Thereafter the normal outflow of bladder contents through the valve is sufficient to substantially keep the valve open. After the contents of the bladder have been voluntarily evacuated, the valve occluding member is automatically returned to the valve seat to again close the valve to a leakproof seal.
Images(1)
Previous page
Next page
Description  (OCR text may contain errors)

United States Patent [191 [11 3,768,102 1 Oct. 30, 1973 Kwan-Ge tt et a1.

City, Utah; Stephen C. Jacobsen, Arlington, Mass.

[73] Assignee: University of Utah, Salt Lake City,

Utah

[22] Filed: Feb. 3, 1972 [21] Appl.No.: 176,759

Related US. Application Data '[62] Division of Ser. No. 849,720, Aug. 13, 1969,

abandoned.

[52] US. Cl. 3/1, 128/1 R, 128/349 R, 128/DIG.25,137/535,137/538, 137/539 [51] Int. Cl ..A61f1/00, A6lf l/24 [58] Field of Search 3/1; 128/1 R, 348-351,-

128/DIG. 25; 137/535, 538, 539

837,009 4/1952 Germany 128/349 R 11,158 0/1892 Great Britain 137/535 OTHER PUBLICATIONS A Mechanical Urethral Valve, by F. P. Kohler et al., The Bulletin of the Dow Corning Center for Aid to Medical Research, Vol. 2, No. 2, Apr. 1960.

Primary Examiner-Richard A. Gaudet Assistant ExaminerRonald L. Frinks Att0rrieyClarence W. Martin 57 1 ABSTRACT An artificial urethral valve for implantation in the bladder or urethra of an incontinent person comprising a movable valve occluding means which is retained in the closed position by means of a spring that requires a relatively high opening force and then substantially collapses to allow the passage of bladder contents through the valve. The valve occluding member retaining spring requires a relatively high breakaway or opening force to open. Thereafter the normal outflow of bladder contents through the valve is sufficient to substantially keep the valve open. After the contents of the bladder have been voluntarily evacuated, the valve occluding member is automatically returned to the valve seat to again close the valve to a leakproof seal.

5 Claims, 3 Drawing Figures 'PA IENTEMm somsv 3.768102 INVENTORS CLIFFORD S. K WAN-GE 77' BY STEPHEN C. JACOBSEN WWW IMPLANTABLE ARTIFICIAL URETHRAL VALVE This is a division of an application for US. Pat. Ser. No. 849,720, filed Aug. 13, 1969 and now abandoned.

Voluntary control over the discharge of bladder contents has long been a serious and -distressing problem for persons whose natural urethral valve is no longer capable of completely controlling the outflow of urine from the bladder for such reasons as advanced age, surgery, disease, or malformation of the natural urethral valve. Persons with this problem have attempted other means of control or correction which have proved to be uncomfortable, inconvenient, unsanitary, offensive, and inadequate.

One such method of caring for involuntary bladder emissions consists of the incontinent person wearing a pad of absorbant material in close proximity to the external opening of the urethra to absorb all the fluid that escapes past the malfunctioning natural urethral valve. This method is very undesirable in-that the wearer is continually confronted with the embarrassment of having to wear a bulky pad of absorbant material that-can create skin irritations and offensive odors. A person thus equipped will of necessity feel-unduly restricted in his activities since he'must always be aware of the problems associated with urination, used pad removal and disposal, and pad replacement. 7

Another method of caring for involuntary urinary emissions has been for the incontinent person to wear a receiving container-attached to the leg or suspended from the waist and connected to the external opening of the urethra in such a manner as to allow the urine to flow by the force of graivty into the receiving container. Such a device is disclosed by Snyder, U. S. Pat. No. 3,447,536. Not only is such a device cumbersome, but it can be odoriferous and has on occasion been known to spill or otherwise accidently discharge its contents.

Neither of the foregoing methods is directed towards solving the underlying problem of the incontinent person nor do they attempt to return the evacuation of bladder contents to the completelyvoluntary control of the afflicted person. i

Beliveau et al., U. S. Pat. No. 3,372,695, propose a device that is inserted up the urethra until a retainer portion resides inside the bladder and an appendage thereto or plug passes outof the bladder into the ure-,

thra such that the plug resides within the confines of the urethral sphincter muscle. The appendage or plug portion of their device thatpasses out through the urethra] sphincter muscle is smaller in diameter thanthe internal diameter of the urethra but of sufficient diameter to form a fluids barrier whenthe urethral sphincter muscle is closed about it. Their invention is adaptable only for those persons who are able to partially close the uethral sphincter muscle sufficiently to completely restrict the urethra when the plug is located within the confines of the muscle and thus overcome incontinence of urination. Their invention would not be usable in a person who was unable to exercise any form of voluntary control over the urethral sphincter muscle or in a person whose urethral sphincter muscle has been damaged by disease such that the plug portion would not complete the seal when acted upon by the muscle. Nor would it be operable in a person whose urethral sphincter muscle has been surgically removed for one reason or another. Also, it is well known in the medical field that an unrestrained foreign object in the urethra is a source of irritation to the lining of the urethra and substantially increases the dangers of infection of the urethra. The cord'in their invention, which extends out the urethra (see column 4, lines 3236 is such a source of irritation to the urethra since it would reside withinthe urethra while the appliance is in place as a method of overcoming incontinence.

The apparatus of the present invention does not require the use of any external appliances as disclosed by Snyder or the adaptationof other voluntary muscles to the task of supplying motive power to a urethral closure device located externally of the urethra as disclosed by Berry, U. S. Pat. No. 3,066,667. Berry discloses an inert and rigid body that is pressed against the urethra to pinch it closed or otherwise cause the urethra to be kinked in such a manner as to prevent the passage of bladder contents through the urethra. From the foregoing, a serious question arises as to whether the pinching of the living tissue will tend to cause necrosis of that section of tissue.

The present invention completely replaces the natural urethral sphincter muscle as the urethra closure means and utilizes only the normal muscles used in urination to create sufficient pressure upon the bladder contents to overcome the spring tension force that holds the occluding member'to the valve seat to form the leakproof seal. Once the initial spring tension-force is overcome, the valve will remain open under the normal flow of the bladder contents with very little pressure required to be exerted upon the bladder to-keep the" valve open and the bladder contents flowing.

After the bladder contents have been evacuated, there is sufficient spring tension in the resilient member to return the occluding member to the closed position to form again a leakproof seal.

It is an object of this invention to provide an artificial urethral valve suitable for implantation in the urethra or bladder of an incontinent person for the purpose of returning the evacuation of bladdercontents to the voluntary control of the user.

A further object of this invention is to provide an artificial urethral valve that requires an opening force greater than the static pressures normally exertedon the bladder and thereafter-remains open under avminimal force such as the gravitational flow of urine from the bladder. 4 v v A still further object of this invention is to provide an artificial urethral valve that automatically returns-to the closed position when the contents of thebladder have been voluntarily evacuated. v

, These and other objects and advantages of the present invention will become apparent from the following drawing and accompanying descriptionsof the draw- FIG. 1 is a schematic of one embodiment of the'artifi cal urethral valve with a spherical occluding',member. FlG. 2 is a schematic of another embodiment of the artifical urethral valve with a conical occluding member.

FIG. 3 is an end view of both embodiments set forth in FIGS. 1 and 2.

Referring to FIG. 1, an artificial urethral valve is shown generally at 10 and comprises a fluids occluding member 11 in the shape of a sphere which occludes the distal end of the inlet portion 12 of a tunnel through the body of the valve when held by the spring tension force of a spring 17 against a valve seat 14. Valve seat 14 is formed circumferentially about the distal end of the inlet tunnel 12. When dislodged from the valve seat 14 by the voluntary exertion of force upon the bladder and its contents sufficient to initiate urination, occluding member 11 is forced away from valve seat 14 whereupon the spring tension force of spring 17 tending to return occluding member 11 to valve seat 14 rapidly collapses. Once dislodged from valve seat 14, occluding member 11 is held away from the valve seat by the force of the flow of bladder contents through inlet tunnel 12 of valve 10.

The diameter of occluding member 1 1 is less than the internal diameter of the cavity or tunnel within which it resides to allow the passage of bladder contents through the valve once the occluding member has been dislodged from the valve seat 14.

After the bladder contents have been voluntarilyevacuated, the spring tension force of spring 17 acting upon occluding member 11 is sufficient to return occluding member 11 to valve seat 14 and again form a leakproof seal. In this manner, the artificial urethral valve very closely approximates the functions of a normally functioning natural urethral valve.

Spring 17 is' in the form of a'spring that has relatively high resistance to movement up to a certain point but movement beyond that point causes the spring to substantially collapse to a condition of weaker resilience. Such a spring is similar to the common noisemaker or cricket which has-a leaf of spring metal with a depression or dimple formed therein which creates the high resistance to movement up to a point after which the spring collapses with a loud noise to the condition of weaker resistance. Spring 17 is also similar in principle to the commercially available Belleville spring wherein opposing compressive and tensive forces within the body of the spring create the condition of relatively high resistance to movement up to a certain point and any movement beyond that point causes the spring to substantially collapse to a condition of weaker resistance.

Utilizing this type of spring, occluding member 11 is held against valve seat 14 until forced away by the .voluntary exertion of force sufficient to cause urination at which time spring 17 substantially collapses and allows occluding member 11 to move away from valve seat 14 to allow the bladder contents to be evacuated through the valve. The flow of the bladder contents through the valve is sufficient to overcome the resilience of spring 17 in its substantially collapsed state. After the flow has ceased, the remaining resilience of the substantially collapsed spring 17 is sufficient to return occluding member 11 to the closed position against valve seat 14 whereupon the spring again requires a relatively high force to open the valve.

It would be obvious to one skilled in the surgical arts that an artificial urethral valve as shown is designed for implantation in the bladder over the bladder outlet to the urethra in such a manner as to completely control the outflow of bladder contents into the urethra and subsequently from the body.

Referring to FIG. 2, occluding member 11 is generally in the form of a right circular cone with a blunted apex and gently rounded corners. The apex of the cone resides within the inlet tunnel 12 and the sloping sides of the cone contact valve seat-14 to form a leakproof seal. This cone shape of the occluding member causes it to act as a lifting body under the flow of bladder contents in that the flow of fluids around the cone shape in a direction generally parallel to the axis of the cone will tend to create an area of decreased pressure behind the cone. This area of decreased pressure will in turn assist in the movement of the occluding member 1 1 further from the valveseat l4 and in overcoming the resistance of spring 17.

The cone shape is merely one suggested embodiment of the occluding member 11. Other forms or shapes could easily be adapted for use as an occluding member for the artificial urethral valve.

FIG. 3 is an end view of the valves shown in FIGS. 1 and 2 and serves to illustrate how openings 15 between restraining members 16 allow the passage of bladder contents fromthe valve into the urethra. In all embodiments, restraining members 16 prevent the downstream travel of occluding member 11.

In all embodiments of theartificial urethral valve all materials of construction in contact with living tissue are inert and non-irritating to living tissue in addition to being inert to urine wherever the materials come into actual contact with the bladder contents.

The artificial urethral valve shown could be surgically implanted in the appropriate position in the lower urinary tract of the incontinent person; however, it could also be constructed of such av small external diameter that it could be inserted through the external opening of the urethra and up the urethra until in a position proximal to the natural urethral valve muscle such that the natural urethral valve muscle would retain the artificial urethral valve in place. As an alternative, the artificial urethral valve could be bonded in place by means of tissue compatible adhesives or by means of expandable barbs that could be expanded when the valve is in place to engage the inner wall of the urethra sufficient to hold the valve in place in the uethra against the pressures of the bladder contents.

We claim:

1. In an artificial .urethral valve for implantation inimplanting and blocking the lower urinary tract of the incontinent person and, having a tunnel which extends therethrough for the passage of bladder contents through said valve body wherein the internal diameter of a first downstream portion of the inlet section of said tunnel is of a lesser diameter than an adjacent second downstream section of said tunnel, the downstream face of said lesser diameter portion being located in a plane generally transverse to the longitudinal axis of said tunnel and serving as a valve seat for an occluding member of said valve tunnel, which occluding member resides within the second section of the tunnel downstream of said valve seat, said occluding memberbeing held in the occluding position against said valve seat by the resilience of a spring means, said spring means having a first greater resiliency to movement to a predetermined position away from said seat and thereafter substantially collapses to a condition of lesser resiliency under a force exerted upon the bladder contents sufficient to initiate urination whereupon said occluding member is held away from said occluding position by i the force of the outflow of bladder contents from the bladder through said valve body until said outflow of said bladder contents has substantially ceased whereupon the residual resilience of said spring is sufficient to return said occluding member to said occluding position.

2. in an artificial urethral valve as defined in claim 1 wherein said occluding member is in the shape generally of an apex of a blunted cone wherein the blunted tip of said cone resides within the center of said valve seat and the sloping sides of said cone serve as a liquid proof contact between said valve seat and said occluding member said occluding member acting as a lifting body under a flow of bladder contents through said tunnel, said lifting body action serving to assist in overcoming any remaining resistive force tending to return said occluding member to said valve seat.

3. An artificial urethral valve as defined in claim 1 wherein all materials of construction exposed to living tissue are inert to and compatible with living tissue.

4. An artificial urethral valve as defined in claim 1 wherein all materials of construction exposed to bladder contents are inert to said bladder contents.

5. An implantable artificial urethral valve comprising valving means operable under a first, greater pressure to open said valve and retained in said open position under a second, lesser, pressure, said valving means comprising a body of a size to be implanted wholly Within the lower urinary tract, a tunnel extending through said body having a valve seat therein, an occluding member engaging said seat, and a spring engaging said occluding member to normally retain said occluding member against said valve seat in a sealing relationship until opened by said first greater pressure, said spring having a first greater resiliency to movement to a predetermined position away from said seat and a second lesser resiliency to movement beyond said predetermined position.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3503400 *Jul 12, 1967Mar 31, 1970Sven M OsthagenUrethral valve
DE837009C *Sep 22, 1950Apr 17, 1952Dr Med Erich KratschmerVerschluss fuer Prostatahypertrophie-Dauerkatheter
GB189211158A * Title not available
Non-Patent Citations
Reference
1 *A Mechanical Urethral Valve , by F. P. Kohler et al., The Bulletin of the Dow Corning Center for Aid to Medical Research, Vol. 2, No. 2, Apr. 1960.
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3858571 *Jul 2, 1973Jan 7, 1975Arthur I RudolphCornual plug
US3942687 *Oct 2, 1974Mar 9, 1976Possis CorporationApplicator for molten thermoplastic adhesives
US4168708 *Apr 20, 1977Sep 25, 1979Medical Engineering Corp.Blood vessel occlusion means suitable for use in anastomosis
US4193576 *Oct 31, 1978Mar 18, 1980J & D EnterprisesSelf-flushing ball seal disconnect
US4209010 *Jul 26, 1978Jun 24, 1980The Kendall CompanyArtificial sphincter
US4210131 *Jul 26, 1978Jul 1, 1980The Kendall CompanyArtificial sphincter with collection bag
US4210132 *Jul 26, 1978Jul 1, 1980The Kendall CompanyArtificial sphincter
US4233982 *Nov 13, 1978Nov 18, 1980Richard Wolf GmbhTrocar sleeves having a ball valve
US4281658 *Jul 9, 1979Aug 4, 1981Child Laboratories, Inc.Dilator
US4379458 *Jul 14, 1980Apr 12, 1983Richard Wolf GmbhTrocar sleeves having a ball valve
US4421510 *Jan 17, 1980Dec 20, 1983Ahlbeck Stig GoranUrine drainage device permitting training of the bladder
US4457299 *May 13, 1981Jul 3, 1984Cornwell George H IIncontinence control devices
US4679546 *Oct 16, 1985Jul 14, 1987Applied Medical Technics B.V.Implantable shut-off device
US4850393 *Aug 1, 1988Jul 25, 1989Rockland Form-A-Plastic, Inc.All-plastic check valve
US4863477 *May 12, 1987Sep 5, 1989Monson Gary LSynthetic intervertebral disc prosthesis
US4909785 *Nov 2, 1988Mar 20, 1990American Medical Systems, Inc.Method for achieving unitary continence
US4946449 *Dec 18, 1986Aug 7, 1990Davis Jr Richard CIndwelling urethral catheter system and method
US4968294 *Feb 9, 1989Nov 6, 1990Salama Fouad AUrinary control valve and method of using same
US5131906 *Sep 17, 1990Jul 21, 1992Chen Fusen HIncontinence device
US5306226 *May 14, 1993Apr 26, 1994Salama Fouad AUrinary control with inflatable seal and method of using same
US5360407 *Aug 29, 1991Nov 1, 1994C. R. Bard, Inc.Implantable dual access port with tactile ridge for position sensing
US5386836 *Jul 9, 1993Feb 7, 1995Zedlani Pty LimitedUrinary incontinence device
US5399168 *Jul 29, 1992Mar 21, 1995C. R. Bard, Inc.Implantable plural fluid cavity port
US5624395 *Oct 20, 1995Apr 29, 1997Cv Dynamics, Inc.Urinary catheter having palpitatable valve and balloon and method for making same
US5707357 *Feb 22, 1996Jan 13, 1998C V Dynamics, Inc.Balloon catheter having palpitatable discharge valve and retention collar
US5906575 *Apr 25, 1996May 25, 1999Rochester Medical CorporationFor use within a patient's urinary tract for blocking the flow of urine
US5935137 *Jul 18, 1997Aug 10, 1999Gynecare, Inc.Tubular fallopian sterilization device
US5964732 *Dec 18, 1997Oct 12, 1999Abbeymoor Medical, Inc.Urethral apparatus with position indicator and methods of use thereof
US5971967 *Aug 19, 1997Oct 26, 1999Abbeymoor Medical, Inc.Urethral device with anchoring system
US6221060Oct 4, 1999Apr 24, 2001Abbeymoor Medical, Inc.Urethral device with anchoring system
US6254638 *Sep 16, 1997Jul 3, 2001Paul Ferdinand SchouwenburgVoice prosthesis with biomedical sealing on the circumference
US6258060Jun 30, 1999Jul 10, 2001Abbeymoon Medical, Inc.Urethral apparatus with position indicator and methods of use thereof
US6315711May 25, 1999Nov 13, 2001Rochester Medical CorporationUrethral urine retention device
US6464999Oct 20, 1999Oct 15, 2002Galt IncorporatedBioadhesive medical devices
US6479000May 25, 1999Nov 12, 2002Rochester Medical CorporationUrethral urine retention device
US6616624Oct 30, 2000Sep 9, 2003Cvrx, Inc.Systems and method for controlling renovascular perfusion
US6679266Mar 28, 2002Jan 20, 2004Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and their delivery
US6684884Jul 23, 2001Feb 3, 2004Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and methods
US7160325 *Jun 1, 2001Jan 9, 2007Ams Research CorporationImplantable medical balloon and valve
US7258135 *Dec 6, 2002Aug 21, 2007Robert Bosch GmbhPressure regulator for a fuel supply system of an internal combustion engine
US7258136 *Jan 26, 2004Aug 21, 2007Robert Bosch GmbhPressure regulator
US7428904May 14, 2004Sep 30, 2008Alien Technology CorporationContraceptive transcervical fallopian tube occlusion devices and their delivery
US7485104Jun 2, 2003Feb 3, 2009Cvrx, Inc.Systems and methods for controlling renovascular perfusion
US7686020Aug 31, 2006Mar 30, 2010Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and methods
US7727140Jun 21, 2005Jun 1, 2010Department Of Veterans AffairsSurgically implantable perineal urinary incontinence device
US7921848Aug 13, 2003Apr 12, 2011Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and methods
US8048086Feb 24, 2005Nov 1, 2011Femasys Inc.Methods and devices for conduit occlusion
US8048101Sep 29, 2008Nov 1, 2011Femasys Inc.Methods and devices for conduit occlusion
US8052669Sep 29, 2008Nov 8, 2011Femasys Inc.Methods and devices for delivery of compositions to conduits
US8066007Jul 31, 2006Nov 29, 2011Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and their delivery
US8171936Oct 20, 2010May 8, 2012Conceptus, Inc.Contraceptive transcervical fallopian tube occlusion devices and methods
US8316853Jul 17, 2009Nov 27, 2012Femasys Inc.Method and devices for conduit occlusion
US8316854Oct 31, 2011Nov 27, 2012Femasys Inc.Methods and devices for conduit occlusion
US8324193Oct 31, 2011Dec 4, 2012Femasys Inc.Methods and devices for delivery of compositions to conduits
US8327852Nov 11, 2011Dec 11, 2012Conceptus, Inc.Occlusion devices and methods
US8336552Oct 31, 2011Dec 25, 2012Femasys Inc.Methods and devices for conduit occlusion
US8356599Nov 11, 2011Jan 22, 2013Conceptus, Inc.Occlusion devices and methods
US8613282May 7, 2012Dec 24, 2013Conceptus, Inc.Occlusion devices and methods
US8695606Nov 24, 2012Apr 15, 2014Femasys Inc.Methods and devices for conduit occlusion
US8726906Nov 25, 2012May 20, 2014Femasys Inc.Methods and devices for conduit occlusion
US8733360Aug 20, 2012May 27, 2014Bayer Essure Inc.Occlusion devices and methods
US8733361Nov 19, 2012May 27, 2014Bayer Essure Inc.Occlusion devices and methods
DE3522277A1 *Jun 21, 1985Jan 2, 1987Richards Medical CoProthetische vorrichtung sowie parazentese-tubus
EP0193406A2 *Feb 27, 1986Sep 3, 1986Medtronic, Inc.Device for controlling incontinence
EP0918495A1 *Aug 11, 1997Jun 2, 1999Galt Laboratories, Inc.Device for maintaining urinary continence
Classifications
U.S. Classification623/23.66, 600/31, 604/247, 623/23.68, 137/535, 128/DIG.250, 137/539, 604/175, 137/538
International ClassificationA61F2/00
Cooperative ClassificationY10S128/25, A61F2/0022
European ClassificationA61F2/00B4