Abstract:
A pliers-like tool has handles and upturned blades. Moving the handles together spreads the upturned blades. With the blades inserted into a foreskin opening, prior to spreading the blades away from each other, the foreskin can be stretched. A ratchet extending between the handles retains the blades in a spread apart condition within the foreskin to expand it. Stretching the foreskin opening for about 30 minutes twice a day for 2-3 weeks is enough to expand it to cure phimosis.

Description:
BACKGROUND OF THE INVENTION  
         [0001]    1. Field of the Invention  
           [0002]    A pliers-like tool spreads the foreskin to stretch it and cure phimosis.  
           [0003]    2. Description of Related Art  
           [0004]    Although true phimosis, where the whole penis is covered with foreskin and the glans are not exposed at all, even at the time of erection, can be cured through an orthopedic operation that cuts the excess foreskin and widens the foreskin opening, there has been the problem that, in addition to the fact that the operation cost is significantly high, the cost of aftercare and medicine mount up, making the monetary burden expensive.  
           [0005]    A phimosis operation runs the risk that cutting too much foreskin may cause tension in the foreskin at the time of erection, that the sutured section of the foreskin may become ugly in a keloidal state, etc., and that ejaculation may become impossible by cutting off a part of the erogenous zone together with the foreskin or damaging the sexual feeling transmitting nerve. The pain will continue about two weeks after an operation, and because the bandage cannot be removed, bathing and urinating become difficult, handicapping the life of the phimosis patient. Many phimosis patients are too ashamed to have an operation, anguishing and suffering with it secretly.  
           [0006]    According to a phimosis manual “Phimosis Counseling Room for Children” true phimosis is caused by the fact that the foreskin ring at the foreskin tip enveloping the glans is too small, and there are descriptions that “if the foreskin ring is expanded using forceps, the glans can be exposed from the opening.” and that “it is desired that a phimosis curer which can be easily used by non-specialists be commercially sold.” 
           [0007]    When the present inventor manufactured a phimosis curer with which a phimosis patient can cure phimosis by himself and tried it with a patient, in about 2˜3 weeks of using it twice a day, in the morning and afternoon for 30 minutes each, the foreskin ring expanded, its opening widened, and the glans became completely exposed.  
           [0008]    The handle grips have to be held for as long as 30 minutes each use, and they need to be used twice a day continuously for 2˜3 weeks. Hand holding the grips becomes tiresome. Because of this the user becomes reluctant to continue treatment and there have been cases where the user stops before any noticeable cure appears.  
           [0009]    There has been a problem that in spite of the fact that a curing effect is not achieved unless the grips are squeezed firmly enough to feel some pain from the foreskin ring, there is a tendency to relieve pain when self treating. The patient tends to loosen the force created by the hand so that there will be no pain felt, and as a result not enough curing is achieved.  
           [0010]    If the hand slips while squeezing the grips, the blades suddenly close under the elastic force of the spring applied to the blades, possibly hurting the penis glans and foreskin interior. The glans epidermis is the thinnest of all the body surfaces and becomes easily damaged, and it is one of the parts where nerves are most concentrated. As a result, severe pain can be inflicted.  
           [0011]    When the opening is widened by squeezing the tool to expand the foreskin ring, if the foreskin slides off the blades due to its elasticity, the foreskin and blades rub against each other and the foreskin may even be torn.  
           [0012]    The use of pliers and pliers-like tools is old and there are numerous varieties of them. While most pliers are used in a pinching action, they have been widely used to separate or press outwardly. Examples are to stretch shoes (F. L. Walker &amp; C. F Smith, U.S. Pat. No. 797,541, issued 15 Aug. 1905), to remove or expand piston rings (O. Winter, U.S. Pat. No. 855,031, issued 28 May 1907, and E. H. Kind, U.S. Pat. No. 1,319,007, issued 14 Oct. 1919), spread bottle nipples (G. E. Lovekin, U.S. Pat. No. 1,978,210, issued 23 Oct. 1934), as a dilator (A. G. Schenk, U.S. Pat. No. 4,257,406, issued 24 Mar. 1981), spacing bones (K. L. Cox, U.S. Pat. No. 4,754,746, issued 5 Jul. 1988), cavity creation (Gellman et al, U.S. Pat. No. 6,099,547, issued 8 Aug. 2000), removing light bulbs (B. L. Christie, U.S. Pat. No. 5,371,658, issued 6 Dec. 1994), etc.  
         SUMMARY OF THE INVENTION  
         [0013]    The phimosis curer is a pliers-like tool constructed so that when handle grips are squeezed together against the elastic force of a spring, two jaws open and a pair of blades installed essentially perpendicularly to the tips of the jaws move away from each other. The pair of blades are inserted into the foreskin opening and the grips are squeezed to spread the blades and expand the foreskin ring and stretch the foreskin opening.  
           [0014]    The objective of the present invention is to make a tool that can be used continuously for a long time without tiring the hand, to effectively expand the foreskin ring to feel some pain for widening the foreskin opening, and eliminate the danger of hurting the glans or foreskin.  
           [0015]    The present invention is characterized by the fact that in a phimosis curer a pair of blades move apart when hand grips consisting of two shafts or handles are squeezed together. The blades are inserted into the foreskin opening of a phimosis and the foreskin opening is widened. The curer is equipped with a ratchet mechanism between the handles that allows the grips to move freely together, according to the desired force applied to the grips, and to fix the grips inseparable against any force applied in the direction of separating the grips.  
           [0016]    A pair of blades are inserted into the foreskin opening of a phimosis and the grips are squeezed together, causing the blades to separate from each other. When the handle grips are squeezed together the grips move freely as close as desired over the ratchet mechanism, the blades move apart from each other, the foreskin ring is expanded by these blades, and the foreskin opening is widened. When the foreskin opening is increased by the blades, a force to move the blades closer to each other is created by the elasticity of the foreskin ring, and with any other force tending to move the grips apart from each other prevented. The grips become fixed inseparably by the ratchet mechanism. Even if the hand force squeezing the grips is released, the blades never close, and the foreskin ring stays expanded even without continued squeezing on the grips, and the foreskin opening is maintained.  
           [0017]    If a large-diameter section with a curved circumferential face is formed on the blade tips, the foreskin will not slip off of the blades and rub, and the force will not be concentrated in one area or part inside the foreskin. It will not wear out or develop a weal even after long-term use. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0018]    [0018]FIG. 1 is an exploded perspective view of the phimosis curer of the present invention.  
         [0019]    [0019]FIG. 2( a ) is a front view and (b) a top view showing the shape of the blades.  
         [0020]    [0020]FIG. 3( a ), (b), and (c) are top views showing the different open/close states.  
         [0021]    [0021]FIG. 4 is a rear view of the phimosis curer.  
         [0022]    [0022]FIG. 5 is a top view of a first modified phimosis curer  
         [0023]    [0023]FIG. 6 is a prospective view of a second modified phimosis curer. 
     
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0024]    A phimosis curer  1  of the present embodiment is formed in a pliers shape where a pair of blades  3 R and  3 L, having first inner ends and second outer ends, move apart from each other when handle grips  2 R and  2 L, having first outer ends and second inner ends, are squeezed together after being inserted into the foreskin opening of a phimosis to expand the foreskin and widen the foreskin opening ring.  
         [0025]    The handle grips  2 R and  2 L are formed as a unit with jaws  4 R and  4 L, respectively, having first inner ends and second outer ends. The jaws are rotatably joined via a fulcrum pin  5  formed with blades  3 R and  3 L erected upwardly perpendicularly on the respective outer ends. Embedded with the fulcrum  5  is a spring (not shown) that applies a force in the direction to open the grips  2 R and  2 L, and close the blades  3 R and  3 L.  
         [0026]    [0026]FIG. 2( a ) is a front view of the phimosis curer  1  seen from the front or tip side, and FIG. 2( b ) is a front top view showing the tip of the jaw. Formed on the upper tips of the blades  3 R and  3 L are enlarged ball hooks, large-diameter sections,  3   a  where the foreskin ring is secured so that the foreskin will not fall or slip off the blades  3 R and  3 L when the foreskin opening of a phimosis is widened. The ball hooks  3   a  are formed in a near-spherical shape that forms spaces  3   b ˜ 3   d  in the tip side and both the front and rear sides when the blades  3 R and  3 L are closed, so that the penis glands and foreskin interior are not sandwiched or pinched. The faces of the blades  3 R and  3 L and the ball hooks  3   a  are finished, smooth curved surfaces treated with a plating process of a metal, or coated with a resin film inert and not harmful to the human body, so that it will not damage the foreskin when it is inserted into the foreskin opening to widen it.  
         [0027]    Installed on the handle grips  2 R and  2 L is a ratchet mechanism  6  that permits the grips  2 R and  2 L to freely move together as close to each other as desired and that can hold the handle grips  2 R and  2 L inseparable against a force operating to separate them from each other. When the blades  3 R and  3 L are inserted into the foreskin opening and the grips  2 R and  2 L are squeezed together, because the handle grips  2 R and  2 L move toward each other, they freely pass together unaffected by the ratchet mechanism  6 , and the blades  3 R and  3 L open by moving away from each other. Thus, the foreskin ring is expanded and the foreskin opening widened. At this time, the opening between the blades  3 R and  3 L is selected to be about 4˜5 cm, the distance necessary for exposing the penis glans.  
         [0028]    When a force moves the blades  3 R and  3 L together, such as by the elasticity of the expanded foreskin ring or other force to move the handle grips  2 R and  2 L apart, the handle grips  2 R and  2 L become secured together by engagement of the ratchet mechanism  6 , and therefore the blades  3 R and  3 L do not move toward each other.  
         [0029]    Ratchet mechanism  6  is equipped with a pawl  7 , pivotably held by a second pivot pin on one handle grip  2 R, and a rack  8 , attached to the other handle grip. The rack  8  is designed to engage with the pawl  7  when the grips  2 R and  2 L move away from each other.  
         [0030]    The curved rack  8  having an upper surface, a lower surface, first end, second end, first and second side, is pivotably supported at its first end on the handle grip  2 L by a first pivot pin  9 , that receives a force or bias from a spring  10 . The rack has cogs  11  formed on its first side outer edge that mesh with the pawl  7  when the grips  2 R and  2 L rotate in the direction to separate or open them (the direction in which the blades  3 R and  3 L close). The spring  10  urges the cogs on the rack toward the pawl  7 .  
         [0031]    A projection  12  is installed on one of the handle grips. The projection pops out and comes in contact with the bottom or lower surface of the curved rack  8  by a plate spring  13  with a force applied in the outward projection direction. A stopper  16  is also installed that restricts the fluctuation or pivot angle of the rack so that the projection  12  is always positioned below the curved rack  8 , even when the curved rack  8  fluctuates or pivots. The pivot of the curved rack  8  in the arrow B direction is restricted by the pawl  7 , and the pivot in the reverse arrow B direction is restricted by the stopper  16 .  
         [0032]    Formed on the bottom or lower surface of the curved rack  8  in a sliding surface  15  is a guide groove  14  that engages with the projection  12  in the projected state. Engaged together they maintain the rack  8  and the pawl  7  in the disengaged state. The sliding surface  15  maintains the projection  12  in the depressed or “sunk-in” state and, when the projection  12  is not in the guide groove  14  under spring pressure, permits the rack  8  and the pawl  7  to be in the engaged state.  
         [0033]    When the projection  12  is engaged in the guide groove  14 , because the rack  8  is coupled  2  the projection  12 , the rack  8  and the pawl  7  are maintained in the disengaged state against a force applied by the spring  10 . If the projection  12  sinks inside the grip  2 R, engagement between the guide groove  14  and the projection  12  is released, and the rack  8  contacts with the pawl  7  and is kept in an engaged state by a force applied by the spring  10 . The projection  12  is formed in a position where it can be engaged with the guide groove  14  by pivoting the curved rack  8  irrespective of the distance between the blades  3 R and  3 L.  
         [0034]    Formed on the second outer end of the rack  8  is a tapered surface  14   a  where the projection  12 , engaged within the guide groove  14 , is pressed into the handle grips when the grips  2 R and  2 L pivot away from each other. When the grips  2 R and  2 L open (when the blades  3 R and  3 L close), engagement between the guide groove  14  and the projection  12  is released.  
         [0035]    When squeezing the grips  2 R and  2 L from the open state, because the projection  12  is held inside the grip  2 R by the sliding surface  15  of the rack  8 , the blades  3 R and  3 L can be opened to an arbitrary or selected distance until the pawl  7  and the curved rack  8  of the ratchet mechanism  6  engage.  
         [0036]    When closing, if the curved rack  8  pivots or fluctuates against the elastic force of the spring  10 , the projection  12  eventually engages with the guide groove  14 . The curved rack  8  and the pawl  7  are maintained in the disengaged state. The grips  2 R and  2 L open by the elastic or resilient bias force of a spring (not shown but similar to the spring  10  shown in FIG. 1) embedded in the fulcrum  5 , and the blades  3 R and  3 L close.  
         [0037]    In operation, directing the right hand palm upward, the phimosis curer  1  is put on it, the grip  2 R is set in contact with the right hand thumb cushion, the little finger and the third finger are put on the grip  2 L, and the thumb tip is kept free when holding the tool so that the curved rack  8  can be easily operated.  
         [0038]    First, as shown in FIG. 3( a ), closed blades  3 R and  3 L are inserted into the foreskin opening of a phimosis, and the grips  2 R and  2 L are squeezed in the direction of the arrow A until the foreskin ring is hooked over the ball hooks  3   a  on the outer tips of the blades.  
         [0039]    At this time, the grips  2 R and  2 L can be moved close together. The ratchet mechanism  6 , while keeping the curved rack  8  engaged with the pawl  7  under spring applying force in the arrow B direction, permits the pawl to glide over the cogs. Because the blades  3 R and  3 L move away from each other in the direction of parting, as shown by the arrow C, the foreskin ring becomes expanded, and the foreskin opening is further widened.  
         [0040]    If the force of the hand is released or loosened when the blades are opened to a certain degree, the elastic force of the foreskin ring tends to close the blades  3 R and  3 L and, along with this, a spring force operates in the direction of making the grips  2 R and  2 L part from each other.  
         [0041]    At this time, because the curved rack  8  and the pawl  7  are engaged, as shown in FIG. 3( b ), the grips  2 R and  2 L are fixed against rotation and therefore the blades  3 R and  3 L are also fixed so that the foreskin ring is expanded and the foreskin opening is kept widened without the need to continue holding the grips  2 R and  2 L with the hand. Because the blades  3 R and  3 L can be fixed at an optimal distance by the ratchet mechanism  6 , the curing process works well. Because the foreskin ring is hooked to the ball hook  3   a , when it is expanded, the foreskin will not slip off of the blades  3 R and  3 L. Also, because the ball hook  3   a  is formed in a ball or near-spherical shape, the force does not concentrate on one area or part inside the foreskin, and therefore it will never wear out or develop a weal even after long-term use.  
         [0042]    After leaving it for 30 minutes, if the tip of the curved rack  8  is pushed with the thumb in the arrow D direction in FIG. 3( b ), against the elastic force of the spring  10 , and let fluctuate or pivot so that the guide groove  14  of the curved rack  8  is positioned right above the projection  12 , as shown in FIG. 3( c ), engagement between the curved rack  8  and the pawl  7  is released and the projection  12  pops out to be engaged with the guide groove  14 .  
         [0043]    With the curved rack  8  and the pawl  7  maintained in the disengaged state, the grips  2 R and  2 L open by rotating away from each other, as shown by the arrow F, by a spring, such as  10 , embedded in the fulcrum  5 , and the blades  3 R and  3 L close by rotating closer to each other in the arrow E direction as shown in FIG. 3( c ).  
         [0044]    Note that at the moment engagement between the curved rack  8  and the pawl is released, even if the blades  3 R and  3 L suddenly close, because the ball hooks  3   a  that hook the foreskin ring are formed in a near-spherical shape, with spaces  3   b ˜ 3   d  formed in its tip in both the front and rear sides, neither the penis glans nor foreskin inside face will be sandwiched or pinched by the ball hooks  3   a.    
         [0045]    Once the blades  3 R and  3 L are about to completely close, the projection  12  is guided by a decreasing depth tapered surface  14   a , formed on the outer end of the guide groove  14 , down until it is sunk or depressed inside the handle grip  2 R.  
         [0046]    With release of engagement between the projection  12  and the guide groove  14 , the curved rack  8  engages with the pawl  7  by the elastic force of the spring  10 , and the projection  12  is kept sunk in the handle grip  2 R by the sliding surface  15  of the rack  8 .  
         [0047]    Because the blades  3 R and  3 L are completely closed and the pawl  7  and the curved rack  8  of the ratchet mechanism are engaged, there is no need to switch the direction of the ratchet mechanism  6  the next time a curing treatment is performed.  
         [0048]    When the phimosis curer  1  of the invention was tried by phimosis patients, using it twice, in the morning and afternoon, every day for about 30 minutes each, without tiring one hand, the foreskin opening was widened by expanding the foreskin ring effectively to feel some pain. The penis glans became completely exposed in 2˜3 weeks.  
         [0049]    In this way, the penis glans can be exposed in a way close to the natural growth process where the penis glans widen the foreskin ring along with the growth of the penis without performing any surgical operation and the patient is not forced to undergo the operation risks and a handicapped life.  
         [0050]    Because the open/close operation of the blades  3 R and  3 L can be performed extremely smoothly and safely by the spring embedded in the fulcrum  5  and the ratchet mechanism  6  in this example, there is little danger of hurting the penis glans that could occur with an excess force operating the grips  2 R and  2 L. Because the ratchet mechanism  6  is installed in the phimosis curer  1 , the blades  3 R and  3 L never close suddenly while in use, and therefore it will not hurt the penis glans that are one of the thinnest and most fragile parts having the most nerves concentrated on the body surface. Because the ball hooks  3  are formed on the outer tips of the blades  3 R and  3 L, the foreskin will never be hurt by being rubbed, because spaces  3   b   18   3   d  are formed with the ball hooks  3   a , the penis glans will not be hurt by being sandwiched or pinched by the ball hooks  3   a.    
         [0051]    Shown in FIG. 5 is a second embodiment of the phimosis curer of the present invention, where the same designations are assigned to the parts in common with those in FIGS.  1 ˜ 4 . In a phimosis curer  21  of this embodiment, a slit or slot  23  is formed along the central interior length of a curved rack  22  of a ratchet mechanism  6 , and cogs  11  which engage with a pawl  7  are formed inside the slit  23 .  
         [0052]    The slit  23  is formed with a width such that the curved rack  22  can pivot or fluctuate so that the cogs  11  can engage/disengage with the pawl  7 . If the curved rack  22  is pushed in the arrow G direction, the cogs  11  and the pawl  7  engage with each other so that grips  2 R and  2 L do not rotate in the opening direction (the direction in which the blades close). If the curved rack  22  is pushed in the arrow H direction, engagement between the cogs  11  and the pawl  7  is released so that the grips  2 R and  2 L and blades  3 R and  3 L can rotate in either direction.  
         [0053]    When holding the grips  2 R and  2 L with the right hand, the cogs  11  and the pawl  7  can be engaged/disengaged by operating the end of the curved rack  22  in the arrows G and H directions using the thumb.  
         [0054]    Although it is desirable to install a spring in the pin  9  that applies a force in the direction to engage the curved rack  22  with the pawl  7 , the pin  9  supports the curved rack  22  freely so as to be pivotable, this spring does not necessarily need to be installed.  
         [0055]    The phimosis curer  1  is held in the right hand with the palm directed upward, the grip  2 R is put on the right hand thumb cushion, the little finger and the third finger are put on the grip  2 L, and the thumb tip is kept free so that the curved rack  22  can be freely operated.  
         [0056]    Then, the grips  2 R and  2 L are squeezed as shown with the arrow A as the closed blades  3 R and  3 L are inserted into the foreskin opening of a phimosis, and the foreskin ring is hooked onto the ball hooks  3   a  at the tip. At this time, because the grips  2 R and  2 L can be moved in the direction to bring them closer and move the blades  3 R and  3 L away from each other, as shown with the arrow C, the foreskin ring is expanded to widen the foreskin opening.  
         [0057]    When it is widened to a desired degree, if the curved rack  22  is fluctuated or rotated by the thumb in the arrow G direction to engage with the pawl  7 , the grips  2 R and  2 L become fixed from rotatation, and therefore the blades  3 R and  3 L also become fixed, and the foreskin ring is expanded and the foreskin opening is maintained without continuing to hold the grips  2 R and  2 L with a hand. Because the blades  3 R and  3 L can be fixed at the optimal distance apart for an individual, by the ratchet mechanism  6 , the curing effect is good.  
         [0058]    After leaving the phimosis curer for 30 minutes, if the tip of the curved rack  22  is pushed with the thumb in the arrow H direction, because the curved rack  22  rotates or fluctuates and its engagement with the pawl  7  is released, the grips  2 R and  2 L rotate in the opposite direction of the arrow A apart from each other, and the blades  3 R and  3 L rotate in the opposite direction of the arrow C to become closer together.  
         [0059]    In this case, too, if ball hooks  3   a  are formed on the tips or outer ends of the blades  3 R and  3 L, even if the blades  3 R and  3 L suddenly close at the moment when engagement between the curved rack  22  and the pawl  7  is released, neither the penis glans, epidermis nor the foreskin inside surface will be sandwiched or hurt by the ball hooks  3   a.    
         [0060]    Shown in FIG. 6 is a third embodiment. In a phimosis curer  31  of this embodiment, handle grips  32 R and  32 L consist of two legs  33 R and  33 L which are piano wires (spring elements) of 3˜4 mm in diameter permanently bent in a near “U” shape or “V” shape but extending away from each other to retain a spring force tending to separate the legs. Both legs  33 R and  33 L are permanently bent so that their ends cris-cross each other forming jaws and are permanently bent up into blades having tip ends in a hook shape  35 . The tip parts  35  are on the ends of the outwardly extending blades  34 R and  34 L. The ball hooks  35  (large-diameter sections) hook the foreskin ring so that the foreskin will not drop off the blades  34 R and  34 L when the foreskin opening of a phimosis is being widened.  
         [0061]    The phimosis curer  31  consists of one integral spring element that is bent beyond its elastic limit to form the grips, legs, blades, and can also form the hook balls. The spring element extends between and joins the first and second handle grips and extends beyond the grips to form the legs and blades. The handle grips are biased away from each other by their commonly formed “V” or “U” shaped spring element by limiting the permanent bend.  
         [0062]    Installed on the grips  32 R and  32 L is a ratchet mechanism  36  that permits the grips  32 R and  32 L to be placed as close to each other as desired according to a force operating in the direction of making these grips closer together and fix the grips inseparable against a force operating in the direction to part the grips from each other.  
         [0063]    The ratchet mechanism  36  is equipped with a flat rack  37 , having a first side edge and a second side edge, attached rotatably to one first grip  32 R, and formed on the rack  37  first side edge are cogs  38  that engage with the other second handle grip  32 L when the grips  32 R and  32 L move in the direction to separate from each other.  
         [0064]    The phimosis curer  31  is held in the right hand palm directed upward, the grip  32 R is put on the right hand thumb cushion, the little finger and the third finger are put on the grip  32 L, and the thumb tip is kept free so that the flat rack  37  can be freely operated. Then, the grips  32 R and  32 L are squeezed as shown with the arrow J after the closed blades  34 R and  34 L are inserted into the foreskin opening of a phimosis, and the foreskin ring is hooked to the ball hooks  35  at the tip of the blades. At this time, because the grips  32 R and  32 L can be moved closer together, the blades  34 R and  34 L move apart from each other as shown by the arrow K, the foreskin ring is expanded to widen the foreskin opening.  
         [0065]    Then, when it is widened to a desired degree, if the flat rack  37  is fluctuated or rotated by the thumb in the arrow M direction to engage with the grip  32 L, the grips  32 R and  32 L become fixed against separation, even if the force of the hand holding the grips  32 R and  32 L is released or loosened, the blades  34 R and  34 L will not close, and the foreskin ring is expanded and the foreskin opening is widened as the spacing is maintained. Because the blades  34 R and  34 L can be fixed at the optimal distance by use of the ratchet mechanism  36 , according to individual needs, the curing effect is good.  
         [0066]    After leaving it fixed at the optimum spacing for 30 minutes, if the grips  32 R and  32 L are squeezed a little in the arrow J direction, because the force applied from the grip  32 L to the cogs  38  of the rack  37  is loosened, the rack  37  rotates by gravity in the opposite direction of the arrow M to come off, or by taking it off with the index finger, engagement with the grip  32 L can be easily released.  
         [0067]    Thus, the grips  32 R and  32 L rotate in the opposite direction of the arrow J to separate from each other, and at the same time the blades  34 R and  34 L come closer together in the opposite direction of the arrow K.  
         [0068]    With the ball hooks  35  formed on the tips of the blades  34 R and  34 L, even if the blades  3 R and  3 L suddenly close at the moment the engagement between the rack  37  and the grip  32 L is released, neither the penis glans, epidermis nor the foreskin inside surface will be sandwiched or pinched by the ball hooks  35 .  
         [0069]    The ratchet mechanisms  6  and  36  are not limited to the specific structures of the embodiments.  
         [0070]    Because the blades can be maintained in an open state by the ratchet mechanism, even if the force exerted by hand holding the grips is loosened, it has the excellent effect that the hand never becomes tired even after long hours of its continuous use. The foreskin ring can be expanded effectively to an optimum degree, until there is a feeling of some pain, to widen the foreskin opening, with there being no danger of hurting the penis glans or the foreskin.  
         [0071]    It is believed that the construction, operation and advantages of this invention will be apparent to those skilled in the art. It is to be understood that the present disclosure is illustrative only and that changes, variations, substitutions, modifications and equivalents will be readily apparent to one skilled in the art and that such may be made without departing from the spirit of the invention as defined by the following claims.