Patent Publication Number: US-2006009794-A1

Title: Stripping wire and stripping catheter for evulsing vein

Description:
TECHNICAL FIELD  
      The present invention relates to a stripping wire and stripping catheter for performing a surgical operation upon a vein or varicose veins.  
     BACKGROUND ART  
      Blood plays a part of circulating within the human body to supply oxygen and nutriment to various parts of the human body and gathering carbon dioxide and waste matter from various parts of the human body. A blood vessel is an important organ bearing the circulation of blood, and is roughly classified into an artery and a vein.  
      The artery is a pipe for sending blood delivered from the heart to all over the body, and the vein is a pipe for returning blood sent to the all over the body to the heart.  
      For example, in the case of blood circulation of leg portions, blood delivered from the heart is sent to every nook and corner of the leg passing through an artery, and returns to a vein passing through the skin, muscles and the like. Blood entered a vein of the leg portion is necessary to move up from the leg toward the heart against the gravity, and a constant pressure is necessary. A vein valve and muscles of legs perform an important function for producing a fixed pressure in blood within the blood vessel.  
      The vein valve plays a part for preventing a backflow of blood to flow blood upward always, but the vein valve itself has no force for flowing blood positively, and muscles of the calf mainly function to extrude blood upward. When muscles of the calf contract, a vein of legs is oppressed to push up blood. In this manner, the vein valve and the pumping action of muscles cooperate so that blood of legs is carried to the heart.  
      A varicose vein is a disease such that a valve of a vein of legs fails to function properly, and blood brings forth a backflow or blood congestion to worsen the circulation of blood of legs. Since blood stays in a vein of legs, a vein becomes thick or meanders. The staying condition of blood becomes worsened, the skin becomes inflamed or the skin becomes light brown and cakes. Further, the skin necroses into ulcer which is difficult to recover.  
      Treatments for varicose veins include generally, an oppression treatment, a hardening treatment, and a surgical treatment. In case of slight illness, an oppression treatment or a hardening treatment is used for treatment, and in case of serious illness, a surgical treatment is carried out. The surgical treatment (stripping operation) is a surgical operation in which many small skin-incisions are provided to remove occlusion or varicosed varicose veins.  
      Japanese Unexamined Patent Publication No. 507714/1996 discloses a conventional device for the local extirpation of varicose veins for removing such a vein blood vessel as described above. The device for the local extirpation of varicose veins comprises a head part comprising a main body provided with barbs and a guiding tip facilitating the insertion of the device into the vein, the barbs being oriented backwards relative to the direction of insertion of the device so that the head part can be inserted into the vein without being impeded by the barbs. A flexible actuating means is attached to the head so that the vein can be gripped firmly by the barbs when the head is pulled out from the vein at an angle relative to the longitudinal direction of the head part in the operative position of the barbs.  
      However, the stripping wire for removing a vein according to the above-described prior art comprises a single wire, and therefore, it is too short or too long depending upon a part to be treated of varicose veins so that the surgical operation is in trouble. Therefore, it has been necessary to prepare stripping wires of various lengths adjusted to a part subjected to surgical operation.  
      Further, where a vein is removed by holding and firmly gripping the vein by the barbs, the vein is cut or damaged in its peripheral portions by the barbs during drawing it. Further, dregs of a vein torn remain in wound, and further the dregs have to be removed.  
      Moreover, in the treatment of a part from which a vein is removed after the removal of varicose veins, to press bleeding and stop bleeding by the palm on a travel line of a long saphenous vein (LSV) are being carried out. In the administration of a medicine into wound after removal of varicose veins, there poses a problem that it is necessary to administer a medicine on the affected part using a medicine administering device or the like.  
      It is an object of the present invention to provide a stripping wire for introverting a vein to remove it, wherein a plurality of wires can be connected to provide a stripping wire having a fixed length, and not only a connected part in which the wires are connected but also an insert head or a rear end portion of the stripping wire become a vein ligating portion.  
      It is a further object of the invention to provide a stripping catheter for introverting a vein to remove it and being provided with a tube for administering a medicine or the like.  
     DISCLOSURE OF THE INVENTION  
      Therefore, the present invention provides a stripping wire for removing a vein, comprising: a first wire having an insert head for guiding said stripping wire into a vein in one end thereof, and first connecting means in the other end thereof; and a second wire having second connecting means that can be connected with said first connecting means in one end thereof, and a rear end portion in the other end thereof, wherein said first wire and said second wire are connected for use, and there is formed a vein ligating portion in order that a connected portion caused by said first connecting means and said second connecting means, said insert head or said rear end portion is engaged with the affected part within the vein to introvert and remove the vein.  
      The present invention further provides a stripping wire for removing a vein, said stripping wire having a plurality of wires connected, each of said connected wires comprising first connecting means provided on one end thereof and second connecting means provided on the other end thereof, wherein an insert head for guiding said stripping wire into a vein is connected to said first connecting means in one end of said connected wire, a rear end portion is connected to said second connecting means in the other end of said connected wire, and there is formed a vein ligating portion in order that a connected portion caused by said first connecting means and said second connecting means between the wires, a connected portion connected said first connecting means and an insert head, or a connected portion connected said second connecting means and a rear end portion is engaged with the affected part within the vein to introvert and remove the vein.  
      By the structure as described above, in the present invention, the wires can be connected, for use, while adjusting to the distance from the incision portion to the vein affected part, or the distance from the first incision portion for inserting the insert head into the vein to the second cut-open portion for taking out the insert head outside the vein, and therefore it is not necessary to prepare in advance stripping wires of various lengths. Further, since fixed connecting means is provided on each wire, it is possible to select and mount insert heads of various shapes prepared in advance.  
      The first connecting means is formed from a fixed shaped male screw or female screw, and the second connecting means is formed from a male screw or a female screw in engagement with the first mentioned male screw or female screw. The insert head is provided with the second connecting means so that the former is connected to the first connecting means of the wire. Similarly, the rear end portion is provided with the first connecting means so that the former is connected to the second connecting means of the wire.  
      The insert head has an extreme end in an inserting direction formed into a convergent dome shape. The insert head is in an olive shape for removing a remained vein broken during removing the vein by a Babcock method. The rear end portion is in a cylindrical shape whose diameter is larger than the wire, and there is formed an operating grip for pushing in or drawing out in a direction of this side the insert head inserted into a vein.  
      Thereby, in the present stripping wire, even if a vein is broken during introverting and removing a vein, the vein can be removed in the direction reversed to the introverting direction.  
      Incidentally, the stripping wire used is a twist wire of which outside diameter is 1.5 to 3.0 mm. And, the surface of the wire is applied with a coating of silicon resin or elastic synthetic resin. Further, the surface of the wire is provided with depth marks at fixed intervals.  
      Further, the surface of said wire in the vicinity of the insert head is formed with fine concavo-convexes. Thereby, the frictional force between the insert head and the inner surface of a vein is maintained to prevent a vein during introverting from being disengaged from the insert head.  
      The present invention further provides a stripping catheter for removing a vein, wherein said stripping catheter has a plurality of catheters connected, each of said catheters connected first connecting means provided on one end and second connecting means provided on the other end, an insert head for guiding said stripping catheter into a vein is connected to said first connecting means on one end of said connected catheter, a rear end portion is connected to said second connecting means on the other end of said connected catheter, there is formed a vein ligating portion in order that a connected portion caused by said first connecting means and said second connecting means between the catheters, said insert head or said rear end portion is engaged with the affected part within the vein to introvert and remove the vein.  
      Here, a tube (a tube hole) within said catheters connected extends through from the rear end portion to the insert head, and a pouring port for pouring a flowing medicine is provided in the rear end portion, and the medicine poured from the pouring port flows into a hypodermic tunnel after removal of a vein from a hole provided in the insert head or said connected portion. Further, a pouring port for pouring a flowing medicine is provided in the rear end portion, the catheter is formed with a plurality of holes from the tube extending through the interior to the circumferential surface of the catheter, and the medicine poured from the pouring port flows into a hypodermic tunnel after removal of a vein from the plurality of holes. To this end, the pouring port is formed so that a syringe for pouring a medicine is connected.  
      Here, a guide wire for guiding the catheter into a vein is introduced into the tube of the catheter connected. Supersonic wave irradiating means for irradiating supersonic waves to the affected part in a vein from a hole provided in the insert head or said connected portion is introduced into the tube within said catheter connected. Further, laser beam irradiating means for irradiating laser beams to the affected part in a vein from a hole provided in the insert head or the connected portion is introduced into the tube within the catheter connected.  
      Further, a pouring port for pouring a flowing medicine is provided in the insert head of the present stripping catheter, and after the insert head inserted into a vein is drawn outside the human body at a fixed place within the vein, the medicine is poured from the pouring port of the insert head. In this case, in the connected portion between the plurality of catheters, a closing portion for closing the tube extending through the catheter connected is formed, whereby different medicines can be poured from the medicine pouring port provided in the insert head and the medicine pouring port provided in the rear end portion, and at least, the two kinds of different medicines can be prevented from being mixed till they are poured into the affected part. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  shows a side view of the whole stripping wire in a first embodiment according to the present invention.  
       FIG. 2  shows an enlarged view of the whole side view having a wire and a wire connected and a connected portion in a second embodiment according to the present invention.  
       FIG. 3  shows an example of a side view of a stripping wire having an insert head and a rear end portion threaded to the connected part in the second embodiment.  
       FIG. 4  shows a view for explaining the operation for removing varicose veins of the lower extremity according to the stripping wire of the present invention.  
       FIG. 5  shows the state that the connected part between wires engages the inner surface of a vein to be introverted.  
       FIG. 6  shows a side view of the whole stripping catheter in a third embodiment according to the present invention.  
       FIG. 7  shows a first modified example of the third embodiment shown in  FIG. 6 .  
       FIG. 8  shows a second modified example of the third embodiment shown in  FIG. 6 .  
       FIG. 9  shows the state that a guide wire is introduced into a tube of a stripping catheter.  
       FIG. 10  shows the state that supersonic wave irradiating means or laser irradiating means is introduced into a tube of a stripping catheter.  
       FIG. 11  shows an example in which first connecting means and second connecting means are joined to a single catheter. 
    
    
     BEST MODE FOR CARRYING OUT THE INVENTION  
      The embodiments of a stripping wire for removing a vein according to the present invention will be described in detail hereinafter with reference to the drawings.  
       FIG. 1  shows the whole view of a stripping wire  1  in a first embodiment according to the present invention. In  FIG. 1 , the stripping wire  1  has a first wire  2   a  and a second wire  2   b  connected. The first wire  2   a  to be inserted into a vein is provided with an insert head  3  on one end (extreme end) thereof. The first wire  2   a  is provided, on the other end (rear end) thereof, with a connecting portion  8   a  (connecting means).  
      The second wire  2   b  is provided, on one end thereof, with a connecting portion  8   b  (connecting means) to be connected to the connecting portion  8   a  of the first wire  2   a,  and is provided, on the other end (rear end) thereof, with a rear end portion  4  gripping for operating the insertion of the stripping wire  1  into a vein.  
      The connecting portions  8   a  and  8   b  are joined or stopped by screw means for fitting a convex portion and a concave portion formed in the connecting portions  8   a  and  8   b,  fitting means such as a pawl, or chuck-shaped connecting means. Where screw means is used, the connecting portions  8   a  and  8   b  are connected by a male screw and a female screw formed and threaded in the connecting portions  8   a  and  8   b.    
      As described, the connection of the connecting portion  8  of the present invention may be any connection by a fitting portion for fitting, or a stopping portion for stopping by a pawl or the like, or a screw portion to be connected by a male screw or a female screw.  
      In the description of the present embodiment, a description will be made of the connecting portions  8   a  and  8   b  as a male screw (first connecting means) and a female screw (second connecting means) formed and threaded in the connecting portions  8   a  and  8   b.    
      The wires  2   a  and  2   b are formed of a material which is flexible, elastic and semi-rigid (for example, such as stainless steel, polycarbonate, polyamide, polyoxymethylene, or the like). This stripping wire  1  is formed by connecting the connecting portion  8   a  provided in the first wire  2   a  and the connecting portion  8   b  provided in the second wire  2   b.  And, the connecting portions  8   a  and  8   b  in which the connecting portion  8   a  and the connecting portion  8   b  provided in the second wire  2   b  form a vein ligating portion  5  for ligating a vein.  
      However, alternatively, in the stripping wire  1 , not only the joining portion  5  between wires, but also the insert head  3  or the rear end portion  4  can be engaged with the inner surface of a vein to provide the vein ligating portion introverting (turning over) a vein.  
      The treatment using the stripping wire  1  is carried out, for example, by applying skin incision to an inguinal portion, inserting it from the center portion of the long saphenous vein (LSV) toward the periphery, ligating and fixing the vein center end, drawing the stripping wire  1  gradually from the center toward the periphery, introverting the vein center end, and removing the vein from the knee incision wound.  
      The rear end portion  4  of the present stripping wire  1  is, in its diameter, cylindrical larger than the wire and forms an operating gripper for pressing the insert head inserted into the vein or pulling it our in the direction of this side. Thereby, the present stripping wire is able to invert and remove the vein in any direction.  
      Further, as the wires  2   a  and  2   b,  a twist wire having the outside diameter of 1.5 to 3.0 mm is used. Further, the surface of the wires  2   a  and  2   b  may be applied with coating of silicone resin or elastic synthetic resin.  
      Incidentally, the stripping wire  1  has an olive-shaped head  6  (removing head) mounted on the extreme end of the wire  2  in order to remove the remained vein broken caused by the stripping by a Babcock method. This olive-shaped head  6  is, when a vein to be removed is remained, attached to the connecting portion  8  of the wire  2  to gradually draw the stripping wire  1  from the center to the periphery to remove the remained vein.  
      In an example shown in  FIG. 1 ( a ), the first wire  2   a  and the second wire  2   b  are provided with the connecting portions  8   a  and  8   b  formed with the male screw and the female screw, respectively. As shown in  FIG. 1 ( a ), in the stripping wire  1 , the first wire  2   a  and the second wire  2   b  are connected by screw means  10  formed with the connecting portion  8   a  (first connecting means) and the connecting portion  8   b  (second connecting means).  
      The connecting portions  8   a  and  8   b  having the first wire  2   a  and the second wire  2   b  connected form a vein ligating portion  5 . The vein ligating portion  5  has a function of ligating a long saphenous vein to draw it toward the peripheral side thereby introverting a vein center end to remove it. And, the surface of the wire is coated with synthetic resin or the like to lower the frictional coefficient. Because of this, it is possible to prevent vein contraction from being generated at the time of inserting a wire.  
       FIG. 1 ( b ) shows a stripping wire  1  in which a depth marker  7  is formed on the surface of the first wire  2   a  and the second wire  2   b  so that the insert depth may be easily known. Other structures of the stripping wire  1  are similar to the structure shown in  FIG. 1 ( a ).  
      In  FIG. 1 ( c ), an olive-shaped head  6  is mounted on one end (extreme end) of the first wire  2   a.  The olive-shaped head  6  is provided for removing a remained vein broken by stripping during surgical operation by a Babcock method. Other structures of the stripping wire  1  are similar to the structure shown in  FIG. 1 ( a ).  
      A description will be made of the structure of a plurality of wires  2  in which connecting portions are formed on both ends and the wire  2  for connecting the wires  2  to form a stripping wire  1 , which is a second embodiment of the present invention.  
       FIG. 2  shows a stripping wire according to a second embodiment of the present invention. In the second embodiment of the present invention, different from the first embodiment described previously, first connecting means  8   a  and second connecting means  8   b  are provided on both ends of the wire  2  for connecting a plurality (more than two) of wires  2 .  
       FIG. 2 ( a ) shows the state that two wires  2   c  and  2   d  formed with the connecting portions  8   a  and  8   b  on both ends are connected. The connecting portion  8   a  formed with a male screw  10   a  is provided on one end of the wire  2   c,  and the connecting portion  8   b formed with a female screw  10   b  is provided on the other end of the wire  2   c.  Further, the connecting portion  8   b  formed with a female screw  10   b  is provided on one end of the wire  2   d,  and the connecting portion  8   a  formed with a male screw  10   a  is provided on the other end of the wire  2   d.    
      In  FIG. 2 ( a ), the wires  2   c  and  2   d  are connected by threading the screws  10   a  and  10   b  formed in the connecting portions  8   a  and  8   b.  Further, the wires  2   c  and  2   d  are designed so that a necessary number of wires are connected such that the connecting portions  8  of another wire  2  are connected one after another to the connecting portions  8   a  till the desired fixed length is obtained.  
      As described above, a plurality of wires  2  can be connected one after another to have the fixed length by the connecting portions  8   a  and  8   b  in which the screws  10  provided on both ends of the wire  2  are formed.  
       FIG. 2 ( b ) shows connecting portions  8   a  and  8   b  provided on the wire  2   d.  The connecting portions  8   b  is formed with a female screw  10   b,  and the connecting portions  8   a  is formed with a male screw  10   a.    
      In  FIG. 2 , the wire  2   c  and the wire  2   d  are connected by threading the male screw of the connecting portion  8   a  of the wire  2   c  and the female screw of the wire  2   d.  Further, for extending the wire  2 , connection can be achieved, for example, by threading the connecting portion  8  having the female screw  10   b  of the other wire  2  in the connecting portion  8   a  of the wire  2   d.    
      In this manner, the plurality of wires  2  can be connected one after another to provide the stripping wire  1  having a fixed length. However, it is possible that wires  2  having plural kinds of length are prepared, the wire  2  having a fixed length is selected adjusting to a part subjected to surgical operation, and the selected wire  2  is connected for use.  
      While in the present embodiment, in connecting of the connecting portions  8   a  and  8   b,  the screw  10  is used, it is noted that there may be employed a method for fitting or engaging the connecting portions  8   a  and  8   b  by means of a fitting member instead of the screw  10 .  
      Further, in the stripping wire  1  of the present invention, a position of the connecting portion connected by the connecting portion  8  of the wire  2  is made to be a vein ligating portion  5 . By connecting a plurality of wires  2 , a plurality of vein ligating potions  5  are formed on the stripping wire  1 .  
      With this, when the extreme end of the stripping wire  1  inserted from the center end assumes a skin incision position of the lowest varicose end, the vein ligating portion  5  at a position nearest to the uninserted stripping wire  1  can be used to ligate a vein.  
      In the conventional stripping wire  1 , since the vein ligating portion  5  is provided approximately in the central portion of the stripping wire  1 , it has been necessary to effect insertion till the vein ligating portion  5  assumes the ligating position of the center end for ligating a vein. In the stripping wire  1  of the present invention, a vein can be removed in the state that the vein ligating portion  5  in the vicinity of the center end (ligating position) is used to ligate and draw the vein to introvert (invert) a blood vessel.  
      Further, in the stripping wire  1 , where the length is short even during insertion and even during removal of a vein, the wire  2  is connected to enable extending the length.  
      Further, in the stripping wire according to the second embodiment, the insert head of various shapes and sizes prepared in advance is connected to the connecting portion  8   b  at the extreme end of the wire  2   c,  and the rear end portion of various shapes and sizes prepared in advance is connected to the connecting means  8   a  at the rear end of the wire  2   d  whereby a stripping wire adjusted to the inside diameter of a vein to be introverted can be obtained.  
       FIG. 3 ( a ) shows an example of a stripping wire  1  in which an insert head  3  and a rear end portion  4  are threaded and connected to a wire  2  formed with connecting portions  8  on both ends, which is a second embodiment. The insert head  3  is threaded by means of a screw to a connecting portion  8   b  on one end (extreme end) of a wire  2   c.  The rear end portion  4  is threaded to a connecting portion  8   a  at the rear end of a wire  2   d.    
       FIG. 3 ( b ) shows an example of a stripping wire  1  in which an olive-shaped head  6  and a rear end portion  4  are threaded and connected to a wire  2  formed with connecting portions  8  on both ends, which is a second embodiment. The olive-shaped head  6  is threaded by means of a screw to one side (extreme end) of a wire  2   c.  The rear end portion  4  is threaded to a connecting portion  8   a  at the rear end of a wire  2   d.    
      Since a screw is used for mounting, the insert head  3 , the olive-shaped head  6 , and the rear end portion  4  can be mounted positively by simple operation to one end (extreme end) of the wire  2   c  and the connecting portion on the other end of the wire  2   d.    
      While in  FIG. 3 , a description has been made of the form in which the insert head  3  and the rear end portion  4  are threaded in the wire  2 , it is to be noted as a separate form that in the wire  2   c  at the extreme end and the wire  2   d  at the rear end in the inserting direction into a vein, the first wire  2   a  and the second wire  2   b  ( FIG. 1 ( a )) to which the insert head  3  and the rear end portion  4  have been already fixed to thereby realize the present second embodiment.  
      A fixed number of wires  2   c  or wires  2   d  formed with the connecting portions  8  on both ends are connected between the first wire  2   a  and the second wire  2   b  to enable obtaining a stripping wire  1  having a fixed length.  
      The operation of an example for removing varicose veins of the lower extremity according to the stripping wire  1  of the present invention will be described hereinafter.  
       FIG. 4  shows a view for explaining the operation of an example for removing varicose veins of the lower extremity according to the stripping wire  1 . The surgical operation treating method (stripping surgical operation) of varicose veins is a surgical operation treatment in which many small skin incisions are placed to remove expanded or varicosed varicose veins. The surgical operation treating method for removing varicose veins of the lower extremity is carried out in the following operation. 
      1. First, the inguinal portion is subjected to the skin incision from 1.5 cm to 2.0 cm to expose a long saphenous vein (LSV)  40 .     2. The stripping wire  1  is inserted in a direction from the center end of the long saphenous vein  40  to the periphery (in a direction indicated by arrow in the figure) to fix the vein to the stripping wire  1  in one ligation.     3. The stripping wire  1  is moved to the varicose lowest end of the trunk, and small skin incision (peripheral end) is applied to the part sensitive to the insert head  3  of the stripping wire  1 , or directly above a protuberance of the skin caused by pushing up the extreme end.     4. After the peripheral-side vein of the long saphenous vein  40  secured by the small kin incision has been exposed, the stripping wire  1  is drawn out of the vein.     5. As shown in  FIG. 4 ( a ), the stripping wire  1  inserted into a vein is further drawn to the peripheral end side (in a direction indicated by arrow) to ligate and fix the vein center end to the vein ligating portion  5  in the vicinity of the center end of the stripping wire  1 .     6. As shown in  FIG. 4 ( b ), the stripping wire  1  is gradually drawn from the center to the periphery (in a direction indicated by arrow) to introvert the center end of a vein.     7. As shown in  FIG. 4 ( c ), the stripping wire  1  is further drawn (in a direction indicated by arrow) to remove it from the small skin incision wound (peripheral end).    
      Where a breakage of a vein occurs during treatment of removal of a vein, the stripping wire  1  is drawn to the periphery as it is to remove the broken vein from the small skin incision wound, after which the vein peripheral end is ligated and fixed to the vein ligating portion  5 , and the introverting removal (stripping) from the periphery to the center is carried out.  
      Further, where it is broken even in stripping from the periphery, the olive-shaped head  6  is mounted on the stripping wire  1  at the center position, and the remained vein is drawn toward the periphery to remove it by the Babcock method. Further, after the completion of the removal of a vein, oppression hemostasis operation for about  5  minutes is carried out by the pawl on the long saphenous vein travel line.  
       FIG. 5  shows the state that the connecting portions  8   a  and  8   b  between the wires engage the inner surface of the introverting vein.  
       FIG. 5 ( a ) shows the state that the connecting portions  8   a  and  8   b  between the wires constitute the vein ligating portion  5  and engage the inner surface of the introverting vein. Since the vein has elasticity, it engages a depressed portion between the first connecting means  8   a  and the second connecting means  8   b  so that the engaged portion becomes caught on the inner wall of a vein to constitute the vein ligating portion  5 .  
      As shown in  FIG. 5 ( b ), the second connecting means (female screw)  8   b  connected to the rear end side of the first wire  2   a  is connected to the first connecting means (male screw)  8   a  connected to the extreme end side of the second wire  2   b.  Thereby, the connecting portion between the wires constitutes the vein ligating portion  5 .  
      A third embodiment of the present invention will be described hereinafter.  
      The interior of the vein removed wound after introversion becomes damaged and bleeds. Therefore, in the treatment, gauze is firmly stuffed into the removed wound to press and stop blood, and pressing and stopping blood is carried out on the long saphenous vein travel line by the palm.  
      However, for the early recovery and treatment of the removed wound, a medicine is administered into the wound (affected part) by means of a medicine administering device or the like, and a laser beam or a supersonic wave can be irradiated to thereby treat the vein removed wound early to stop blood.  
      In the third embodiment of the present invention, a stripping catheter is used in place of a stripping wire. The stripping catheter is that the center shaft of the stripping wire in the second embodiment of the present invention described previously is a hollow tube.  
       FIG. 6  shows the whole view of the present stripping catheter.  
      The present stripping catheter  20  consists of a first catheter  20   a  and a second catheter  20   b  connected each other. The two stripping catheters are that first connecting means  21   a  of the first catheter  20   a  and second connecting means  21   b  of the second catheter  20   b  are connected to constitute a connecting portion  25 . The connecting portion  25  constitutes the vein ligating portion  5 . Further, alternatively, a depression formed between the first catheter  20   a  and the connecting means at the extreme end thereof, and the insert head  22 , and a depression formed between the second catheter  20   b  and the connecting means at the rear end thereof, and the rear end portion  23  may likewise constitute the vein ligating portion.  
      In the stripping catheter  20  shown in  FIG. 6 , a tube  24  within the first catheter  20   a  and a tube  24  within the second catheter extend through from the insert head  22  to a connecting portion  25  and from the connecting portion  25  to the rear end portion  23 . This enables that a medicine poured from a medicine pouring port  23   a  of the rear end portion  23  flows out of an outflow port  22   a  provided at the extreme end of the insert head  22  and is administered to the affected part. Therefore, a medicine poring syringe is connected to the rear end portion  23 .  
      Further, the present stripping catheter  20  can be also removed in the direction reversed to the inserting direction of the insert head  22 , and so, the outflow port  22   a  provided at the extreme end of the insert head  22  may be also used as a flowing medicine pouring port. That is, after the insert head  22  inserted into a vein has been pulled outside the human body at a fixed place within the vein, a medicine is poured from the pouring port (outflow port)  22   a  of the insert head.  
      Incidentally, the present stripping catheter  20  is formed of a material which has flexibility and elasticity, and semi-rigidity (for example, such as nylon, PTFE, polyimide, polyurethane, and stainless).  
       FIG. 7  shows a first modified form of the third embodiment shown in  FIG. 6 . Also in the connecting means  21   a  and  21   b  of the present stripping catheter  20 , outflow holes from which a medicine flows out are provided. In the flowing medicine poured from the rear end portion  23 , since a medicine flows out of also the connecting means  21   a  and  21   b  in the midst to the insert head  22 , a medicine can be widely flown into a hypodermic tunnel when a vein is removed. Because of this, a medicine outflow hole for communicating a tube with the outer circumferential surface of a catheter is applied to the catheter itself, whereby after removal of a vein, a medicine can be also administered in the wide range in the hypodermic tunnel.  
       FIG. 8  is a second modified form of the third embodiment shown in  FIG. 6 , showing an example of a stripping catheter in which in a connecting portion  25  between a first catheter  20   a  and a second catheter  20   b,  a closing portion for closing a tube extending through the connected catheter is formed. Thereby, a medicine poured from the insert head  22  can be made different from a medicine poured from the rear end portion  23 , and at least, the two kinds of different medicines can be prevented from being mixed till it is poured into the affected part. As shown in  FIG. 8 , a medicine A poured from the insert head  22  flows out of a medicine outflow port  26   a  provided in first connecting means  21   a  in a first catheter  20   a,  and a medicine B poured from the rear end portion  23  flows out of a medicine outflow port  26   b  provided in second connecting means  21   b  in a second catheter  20   b.    
       FIG. 9  shows the state that a guide wire  30  is inserted into a tube of the present stripping catheter  20 . As described, the tube ( 24  in  FIG. 6 ) of the present stripping catheter  20  is possible not only to deliver a medicine but also to insert the guide wire  30 .  
      The guide wire  30  has a shape in which an extreme end  30   a  in an inserting direction into a vein is curved, and is formed by a wire which is smaller in diameter than that of the tube of the catheter so as to facilitate passage into a vein blood vessel. The guide wire  30  extends through the tube in the stripping catheter  20  and projects from the extreme end of the insert head  22 , and first moves into the vein blood vessel to guide the insertion of the stripping catheter  20 . The reason why the extreme end  30   a  of the guide wire  30  is curved is to guide the stripping catheter  20  smoothly to a fixed place within the vein. In case of the stripping wire  1 , in the insertion from the center portion of a vein to the peripheral portion, the vein meanders so that the resistance with respect to the stripping wire  1  is so great as to cause it to pass through slackening while performing a piston motion.  
      The guide wire  30  is inserted into the catheter whereby the stripping catheter  20  meandered within the blood vessel can be guided by the guide wire  30  and inserted into the peripheral portion of the blood vessel. With this, the vein can be inserted easily without passing through slackening on the skin while performing a piston motion.  
       FIG. 10  shows the state that supersonic wave irradiating means  30  or laser beam irradiating means  31  is inserted into a tube of the present stripping catheter  20 . As described, the tube ( 24  in  FIG. 6 ) of the present stripping catheter  20  is also possible to insert the supersonic irradiating means  30  or the laser beam irradiating means  31  in place of the guide wire  30  described previously.  
      In  FIG. 10 , the supersonic wave irradiating means  30  or the laser beam irradiating means  31  irradiates supersonic waves or laser beam from a plurality of irradiation lights  26   a,    26   b  and  26   c  provided in the second connecting means  21   b.  However, it is needless to say that it may be irradiated from the extreme end of the insert head  22  of the present stripping catheter  20 . To a head for irradiating supersonic waves or laser beam of the supersonic wave irradiating means  30  or the laser beam irradiating means  31  is supplied power energy by a pair of lead wires inserted into a tube  27 .  
      As described, for early recovery and treatment of the removed wound from which vein is introverted and removed, the laser beam or the supersonic waves is administered, before or after a medicine is administered into wound (affected part) by a medicine administering device or the like, to thereby recover and stop blood early within the vein removed wound.  
       FIG. 11  shows an example in which first connecting means  21   a  and second connecting means  21   b  are joined to a single catheter  20   a.    
      As described above, the first connecting means  21   a  and the second connecting means  21   b  are joined to one end of the catheter  20   a  and the other end thereof, respectively. However, in the example shown in  FIG. 11 , the catheter  20   a  and the first and the second connecting means  21   a  and  21   b  are joined by means of adhesives. Therefore, each of the connecting means  21   a  and  21   b  is provided with a depression  33  for receiving a catheter, and the end of the catheter  20   a  is inserted in the state that an adhesive is coated on the depression. The depression  33  is provided with a hole  32  directed toward the outer circumferential surface, thereby enhancing the adhesiveness relative to the catheter  20   a.    
      As described above, in the stripping wire for introverting and removing a vein according to the present invention, it is possible that necessary number of a plurality of wires are connected for use to provide a stripping wire having a fixed length, and therefore this is able to cope with any diameter and length of veins. Further, not only the connecting portion to which a wire is connected but also the insert head or the rear end portion of the stripping wire become the vein ligating portion, thus enhancing the operating property and usefulness of the stripping wire.  
      The present invention has realized a stripping catheter for introverting and removing a vein and being provided with a tube for administering a medicine or the like. Also in the present stripping catheter, it is possible that necessary number of a plurality of wires are connected for use to provide a stripping catheter having a fixed length, and various shapes and sizes of insert heads prepared in advance can be selected adjusting to a vein subjected to introverting and removing to constitute a single stripping catheter.  
     INDUSTRIAL APPLICABILITY  
      The present invention relates to a stripping wire for carrying out the removing operation of a vein or varicose veins used in the treatment site, and a stripping catheter for carrying out the removing operation of a vein or varicose veins and for pouring a medicine or the like into the affected part, which has an industrial applicability.