Patent Publication Number: US-2022225977-A1

Title: Trocar system for use in laparoscopic surgery

Description:
TECHNICAL FIELD 
     The present disclosure relates to a trocar system for laparoscopic surgery and, more particularly, to a trocar system for laparoscopic surgery that prevents improper suturing caused as a result of the focus of the suture needle being shaken when suturing the peritoneal hole of the peritoneum after completion of laparoscopic surgery. 
     BACKGROUND ART 
     In general, unlike conventional abdominal laparotomy, laparoscopic surgery is a surgical method in which four to six holes with a diameter of 0.5 to 1.2 cm are incised in the abdomen, a trocar with a diameter of 0.5 to 1.2 cm and a length of 15 to 16 cm is inserted to the hole, a light source and a camera are inserted through the hole of trocar after inserting a trocar, and various surgical instruments are inserted into the other hole to monitor the cutting, sewing, and molding of organs from the outside of the patient. 
     In order to perform laparoscopic surgery, it is known that a trocar is inserted into the patient&#39;s abdomen, a gas such as carbon dioxide gas is injected into the abdominal cavity to secure an intraperitoneal space, and then the operation area is performed while observing the surgical site using endoscopy and surgical instruments through a plurality of trocars. 
     When the operation is over, a suturing instrument is used to suture the surgical site. This suturing instrument seals the surgical site by holding the needle with fixed forceps inserted into the abdominal cavity through the trocar and stitching the surgical site. After sewing, opposite sides of the thread are pulled out of the body through a trocar to prevent the thread from coming loose, and a knot is made outside the body, and then the knot is pushed with a knot presser to form a knot in the abdominal cavity. 
     In this regard, patent document 1 discloses providing a trocar for laparoscopic surgery that is mounted through the peritoneum during laparoscopic surgery, has a hollow shape in which a space for guiding a camera or a surgical instrument into the abdominal cavity is formed therein, and a trocar housing that passes through the peritoneum, including: a hole-shaped first opening part formed on opposite sides of the upper end of the trocar housing and into which a suture needle connected with a suture thread is inserted; a second opening part in the shape of a slot formed on opposite sides of the lower end of the trocar housing and through which the suture needle passes along the longitudinal direction of the trocar housing; and a sealing member made of an elastic material to block the first opening part to prevent the leakage of carbon dioxide inside the trocar housing in a state in which the suture needle is inserted, and the lower end of the trocar housing has a structure cut in a diagonal direction. 
     However, in patent document 1, since the suture needle was not guided and applied in a wide area in the first opening part of the hole shape, there was a concern that the focus of the suture needle could be shaken. 
     In addition, due to the second opening part having a long length in the longitudinal direction of the slot shape, there was a concern that the focus of the suture needle could be shaken. 
     That is, when the suture needle passes through too close to the peritoneal hole, the peritoneal hole could be torn. 
     DOCUMENTS OF RELATED ART 
     Patent Document 
     
         
         Patent Document 1: Korean Utility Model Registration No. 20-0473904 (Registered on 2014 Jul. 31.) 
       
    
     DISCLOSURE 
     Technical Problem 
     Accordingly, the present disclosure has been made keeping in mind the above-mentioned problems occurring in the related art, and the present disclosure is intended to propose a trocar system for laparoscopic surgery that prevents improper suturing caused as a result of the focus of the suture needle being shaken when suturing the peritoneal hole of the peritoneum after completion of laparoscopic surgery. 
     Technical Solution 
     In order to achieve the above objective, the present disclosure provides a trocar system for laparoscopic surgery, including: a suture needle guide member in which through-holes interconnected to each other are formed in the outer surface of through-hole, and a first and second suture needle guide holes are formed to be elongated and inclined long in the longitudinal direction, respectively, at opposite sides of the outer surface on the periphery of the through-holes; a trocar which is detachably coupled to the suture needle guide member passes through the through-holes, has space is formed therein, in which a third and fourth suture needle guide holes facing the first and second suture needle guide holes are formed at one side of the outer surface passing through the through-hole while passing through the space, respectively, and a fifth and sixth suture needle guide holes facing the first and second suture needle guide holes are formed on the opposite side of the outer surface that does not pass through the through-hole, respectively; a trocar unit which is detachably coupled to the suture needle guide member, in which a through-hole passing through the trocar coupled to the suture needle guide member is formed on the outer surface, and the seventh and eighth suture needle guide holes facing the third and fourth suture needle guide holes are formed on one side of the outer surface close to one side of the trocar passing through the through-hole; and a suture needle provided with a suture thread that is guided to the first, third, fifth, seventh suture needle guide hole and the second, fourth, sixth, and eighth suture needle guide hole. Both the trocar coupled to the suture needle guide member and the trocar unit coupled to the suture needle guide member are inserted into the abdominal cavity of a patient to form a peritoneal hole while passing through the peritoneum. When the laparoscopic surgery is completed by the endoscope and surgical instrument inserted into the abdominal cavity of the patient through the through-hole while the trocar is separated from the suture needle guide member, the endoscope and surgical instrument is pulled out of the through-hole, the trocar is coupled to the suture needle guide member, and the peritoneal hole is sutured with a suture thread by guiding the suture needle to the first, third, fifth, and seventh suture needle guide holes and the second, fourth, sixth, and eighth suture needle guide holes. 
     Advantageous Effects 
     In the present disclosure, since the first and second suture needle guide holes are formed to be elongated and inclined long in the longitudinal directions of the guide part, there is an effect that the suture needle is guided while being applied in a wider area than in the prior art. 
     In addition, there is an effect that the suture needle is guided while being applied in the third, fourth, fifth, sixth suture needle guide hole of the trocar and the seventh, and eighth suture needle guide hole of the trocar over a wider area than in the prior art. 
     That is, there is an effect that the suture needle is stably fixed to the suture needle guide member, the trocar, and the trocar unit. 
     In other words, while preventing the focus of the suture needle from shaking compared to the prior art, the present disclosure has an effect of simultaneously preventing the peritoneal hole from being torn by penetrating too close to the peritoneal hole of the peritoneum. 
     According to the present disclosure, since the first and second guide parts of the first body are fitted into the first and second guide grooves of the second body, respectively, there is an effect of preventing the second body from shaking in the first body. 
     That is, the trocar system of the present disclosure has the effect of preventing the focus of the suture needle from shaking. 
     In addition, there is an effect that the first and second bodies can be easily coupled to each other and uncoupled from each other. 
     The present disclosure has the effect of preventing, by the stumbling block, the second body from being inserted too deeply into the through-hole of the first body. 
     That is, there is an effect of preventing a phenomenon in which the second body is not easily removed when the second body is required to be separated from the first body. 
     The present disclosure has the effect of further preventing the second body from shaking in the first body because the fitting protrusion of the elastic part is inserted into the fitting hole of the first body. 
     In addition, there is an effect of easily coupling and decoupling the fitting protrusion and the fitting hole due to the elasticity of the elastic part. 
     In the present disclosure, the fitting protrusion of the trocar is inserted into the fitting hole of the second body, so there is an effect of preventing the trocar from shaking in the sealing needle guide member. 
     That is, the trocar system of the present disclosure has the effect of preventing the focus of the suture needle from shaking. 
     In other words, according to the present disclosure, the fitting protrusion of the trocar is inserted into the fitting hole of the protrusion, so there is an effect of preventing the trocar from shaking in the suture needle guide member. 
     That is, the trocar system of the present disclosure has the effect of preventing the focus of the suture needle from shaking. 
     In addition, in the trocar system of the present disclosure, the protrusion is configured to protrude from the first body, so it is possible to confirm the coupling between the fitting hole of the protrusion and the fitting protrusion of the trocar from the outside. 
     That is, the trocar of the present disclosure is advantageous in that it can be confirmed that the trocar and the suture needle guide member are correctly coupled to each other, and at the same time, the centers of the first, third, fifth, and seventh suture needle guide holes and the second, fourth, sixth, and eighth suture needle guide holes coincide to insert the suture needle safely. 
    
    
     
       DESCRIPTION OF DRAWINGS 
         FIGS. 1 and 2  are a combined perspective view, and an exploded perspective view of a trocar system for laparoscopic surgery according to an embodiment of the present disclosure; 
         FIGS. 3A to 3   c  are a cross-sectional views of a trocar system for laparoscopic surgery according to an embodiment of the present disclosure; 
         FIGS. 4 to 12  are detailed views of a trocar system for laparoscopic surgery according to an embodiment of the present disclosure; and 
         FIGS. 13 to 17  are views of a state of use of a trocar system for laparoscopic surgery according to an embodiment of the present disclosure. 
     
    
    
     BEST MODE 
     Accordingly, an embodiment of the present disclosure as described above will be described in detail with reference to the accompanying drawings. 
     As shown in  FIGS. 1 to 17 , the trocar system  1000  for laparoscopic surgery according to an embodiment of the present disclosure includes a suture needle guide member  100 , which has interconnected through-holes  111  and  121  formed at the outer surface thereof, and the first and second suture needle guide holes  112   a  and  113   a  on the periphery of the through-holes at opposite sides of the outer surface, and are formed to be elongated and inclined in longitudinal directions on the outer surfaces of the through-hole  111  and  121 , respectively. 
     The trocar system  1000  for laparoscopic surgery includes a trocar  200  which is detachably coupled to the suture needle guide member  100  and passes through the through-holes  111  and  121 , has a space  210  is formed therein, in which the third and fourth suture needle guide holes  220  and  230  facing the first and second suture needle guide holes  112   a  and  113   a  are formed at one side of the outer surface passing through the through-hole  111  and  121  while passing through the space  210 , respectively. The fifth and sixth suture needle guide holes  240  and  250  facing the first and second suture needle guide holes  112   a  and  113   a  are formed on the opposite side of the outer surface that does not pass through the through-holes  111  and  121 , respectively. 
     The trocar system  1000  for laparoscopic surgery includes a trocar unit  300 , which is detachably coupled to the suture needle guide member  100 , in which a through-hole  310  passing through a trocar  200  coupled to the suture needle guide member  100  is formed at the outer surface thereof, and the seventh and eighth suture needle guide holes  320  and  330  facing the third and fourth suture needle guide holes  220  and  230  are formed on one side of the outer surface of the trocar unit  300  close to one side of the trocar passing through the through-hole  310 . 
     The trocar system  1000  for laparoscopic surgery includes a suture needle  400  equipped with a suture thread  410  guided to the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320 , and the second, fourth, sixth, and eighth suture needle guide holes  113   a ,  230 ,  250 , and  330 . 
     Here, a traction part for pulling and releasing the suture thread  410  is formed at the end of the suture needle  400 . 
     In addition, the suture needle guide member  100  includes a first body  110  which is detachably coupled to trocar unit  300 , in which a through-hole  111  is formed in the center of the outer surface, and the first and second guide parts  112  and  113  are formed to protrude in longitudinal directions on opposite sides of the inner surface of the through-hole  111 , respectively. The first and second suture needle guide holes  112   a  and  113   a  are formed to be elongated and inclined in the longitudinal directions on the outer surface of the first and second guide parts  112  and  113 . 
     Here, a stumbling block  114  is formed on the inner surface of the through-hole  111 . 
     In addition, at least one fitting hole  115  connected to the through-hole  111  is formed on the outer surface of the first body  110 . 
     Here, the fitting hole  115  is formed on opposite sides of the through-hole  111 , respectively. 
     In addition, a protrusion  116  having a fitting hole  116   a  around the first and second suture needle guide holes  112   a  and  113   a  is formed to protrude on one side of the first body  110  to which the trocar  200  is blocked. 
     In addition, at least one fastening part  117  is formed to protrude from one outer surface of the first body  110  inserted into the through-hole  310  of the trocar unit  300 . 
     The suture needle guide member  100  includes a second body  120  to which the trocar  200  is detachably coupled, in which the suture needle guide member  100  is inserted into the through-hole  111 , the through-hole  121  connected to the through-hole  111  is formed in the center of the outer surface, and the first and second guide grooves  122  and  123  into which the first and second guide parts  112  and  113  are inserted while being guided to the first and second guide parts  112  and  113  are formed on opposite outer surfaces of the through-hole  121 , respectively. 
     Here, a space  124  is formed between the first and second guide grooves  122  and  123  by opening one side of the second body  120  around the through-hole  121  on one side of the second body  120  in which the through-hole  121  is formed. 
     In addition, at least one elastic part  125  is formed on the outer surface of the second body  120  by cutting a part of the open inlet of the space  124 . 
     Here, the elastic parts  125  are respectively formed on opposite sides of the through-hole  121 . 
     In addition, a fitting protrusion  125   a  to be fitted into the fitting hole  115  is formed to protrude from the outer surface of the elastic part  125 . 
     Here, the elastic part  125  has elasticity as a part of the open inlet of the space  124  is cut to opposite sides of the fitting protrusion  125   a.    
     In addition, at least one fitting hole  126  is formed around the through-hole  121  at one side of the second body  120  to which the trocar  200  is blocked. 
     Here, the fitting hole  126  is formed on opposite sides of the through-hole  121  in a direction perpendicular to the first and second guide grooves  122  and  123 . 
     In addition, the second body  120  is inserted into the through-hole  111  and is blocked by the stumbling block  114 . 
     A fitting protrusion  260  fitted into the fitting hole  126  is formed to protrude from the outer surface of the trocar  200 , and a fitting protrusion  270  fitted into the fitting hole  116   a  is formed to protrude. 
     In addition, the trocar  200  has a space  210 , and the third and fourth suture needle guide holes  220  and  230  are formed therein, includes a through part  201  passing through the peritoneum  1 ; and a handle part  202  formed on one side of the through part  201 , in which a fitting protrusion  260  and  270  are formed on an outer surface thereof, and a protrusion and a hole are formed on an inner surface thereof. 
     Here, the hole is formed passing through the handle part  202 . 
     In addition, the trocar  200  includes a protrusion of the handle part  202  and a handle cover  203  in which a hole and a protrusion to which the hole is fitted are formed on the outer surface. 
     Here, the fifth and sixth suture needle guide holes  240  and  250  are formed passing through the protrusion of the handle cover  203 . 
     Furthermore, the trocar unit  300 , in which a through-hole  310  and the seventh and eighth suture needle guide holes  320  and  330  are formed, includes a through part  301  passing through the peritoneum  1 ; and a handle part  302  formed on one side of the through part  301 , in which a through-hole  310  is formed in the center, and a protrusion and a hole are formed around the through-hole  310 . 
     In addition, the trocar unit  300  includes a handle cover  303  in which a through-hole  310  is formed in the center, and a protrusion of the handle part  302  and a hole and a protrusion fitted into the hole are formed on the outer surface around the through-hole  310 . 
     Here, a fastening part  303   a  for fastening with the fastening part  117  of the first body  110  is formed to protrude on the inner surface of the through-hole  310 . 
     In addition, the fastening part  303   a  is formed longer in the circumferential direction than the fastening part  117  of the first body  110 , and a guide surface  303   a ′ is formed on one side of the outer surface that comes into contact at first when the fastening part  117  is fastened. A fitting groove  303   a ″ into which the fastening part  117  guided to the guide surface  303   a ′ is fitted and fixed is formed on one side opposite the outer surface. 
     Furthermore, the trocar unit  300  includes a check valve  340  that is installed between the handle part  302  and the handle cover  303  and prevents the gas inside the abdominal cavity from flowing out through the through-hole  310  to the outside. 
     Here, the check valve  340  is passed through by the suture needle  400 . 
     The trocar unit  300  is formed with a handle part  302 , in which a gas supply/discharge part  350  having a valve for injecting and discharging medical gas into the abdominal cavity is connected to the through-hole  310 . 
     The operation of the present disclosure configured as described above is as follows. 
     As shown in  FIGS. 1 to 17 , the trocar system  1000  for laparoscopic surgery, according to an embodiment of the present disclosure, combines the first and second bodies  110  and  120  of the suture needle guide member  100 . 
     In more detail, the first and second guide parts  112  and  113  of the first body  110  are guided to the first and second guide grooves  122  and  123  of the second body  120  are fitted obliquely. 
     Here, the elastic part  125  of the second body  120  is bent and elastically deformed into the space  124  while the fitting protrusion  125   a  is applied on the inner surface of the through-hole  111 . When the elastic part  125  is reached to the fitting hole  115  of the first body  110 , the fitting protrusion  125   a  is returned to its original state by elasticity, and the fitting protrusion  125   a  is fitted into the fitting hole  115 . 
     In addition, the second body  120  is fitted into the through-hole  111  while being blocked on the stumbling block  114  of the first body  110 . 
     Then, after coupling the suture needle guide member  100  to the trocar unit  300 , the trocar  200  is coupled to the suture needle guide member  100 . 
     Here, the fitting protrusion  260  of the trocar  200  is fitted into the fitting hole  126  of the suture needle guide member  100 . 
     In addition, the fitting protrusion  270  of the trocar  200  is fitted into the fitting hole  116   a  of the suture needle guide member  100 . 
     In addition, the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320  are aligned with the centers in the diagonal direction, and the second, fourth, sixth, and eighth suture needle guide holes  113   a .  230 ,  250 , and  330  are also aligned with the centers in the diagonal direction opposite to the diagonal direction. 
     That is, the trocar  200  is stably fixed to the trocar unit  300  through the suture needle guide member  100  and passes through the through-holes  111  and  121  of the suture needle guide member  100 , and the through-hole  310  of the trocar  310 . 
     Then, the trocar unit  300  and the trocar  200  are inserted into the abdominal cavity through the incision in which the skin of a patient is cut in advance to pass through the peritoneum  1 . 
     Here, a peritoneal hole  1   a  is formed at the peritoneum  1 . 
     Then, after separating the trocar  200  from the suture needle guide member  100 , the endoscope and surgical instrument  2  is inserted into the abdominal cavity through the through-holes  111 ,  121 , and  310  of the suture needle guide member  100  and the trocar unit  300  to start laparoscopic surgery. 
     Here, the inside of the abdominal cavity is expanded due to the medical gas supplied through the gas supply/discharge unit  350  of the trocar unit  300  to form an operating space. 
     In addition, the trocar unit  300  fitted into the peritoneal hole  1   a  maintains the shape of the peritoneal hole  1   a.    
     After the laparoscopic surgery is completed, the endoscope and the surgical instrument  2  is taken out from the inside of the abdominal cavity. 
     Then, the trocar  200  is coupled to the suture needle guide member  100 . 
     Then, the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320  are aligned with the centers in the diagonal direction, and the second, fourth, sixth, and eighth suture needle guide holes  113   a .  230 ,  250 , and  330  are also aligned with the centers in the diagonal direction opposite to the diagonal direction. 
     Then, after moving the seventh and eighth suture needle guide holes  320  and  330  of the trocar unit  300  to a position for suturing the peritoneal hole  1   a , the suture needle  400  provided with a suture thread  410  is guided to the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320  to pass through the periphery of the peritoneal hole  1   a.    
     Here, since the first suture needle guide hole  112   a  is formed to be elongated and inclined long in the longitudinal direction of the first guide part  112 , the suture needle  400  is guided while being applied in a wide area. 
     In addition, since the suture needle  400  is guided to the third and fifth suture needle guide holes  220  and  240  of the trocar  200  and the seventh suture needle guide hole  320  of the trocar unit  300 , the suture needle  400  is more efficiently guided by applying over a wide area. 
     Then, in the traction part of the suture needle  400  located inside the abdominal cavity, the suture thread  410  is grabbed with forceps of another auxiliary trocar system to release the traction, and then the suture thread  410  is moved from the position where the suture thread  410  was located to the opposite position. 
     Then, the suture needle  400  from which the suture thread  410  is separated is withdrawn from the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320 . 
     Here, the suture thread  410  remains inserted into the first, third, fifth, and seventh suture needle guide holes  112   a ,  220 ,  240 , and  320 . 
     Then, the suture needle  400  is guided to the second, fourth, sixth, and eighth suture needle guide holes  113   a ,  230 ,  250 , and  330  to pass through the periphery of the peritoneal hole  1   a.    
     Here, since the second suture needle guide hole  113   a  is formed to be elongated and inclined long in the longitudinal direction of the second guide part  113 , the suture needle  400  is guided while being applied in a wide area. 
     In addition, since the suture needle  400  is guided to the fourth and sixth suture needle guide holes  230  and  250  of the trocar  200  and the eighth suture needle guide hole  330  of the trocar unit  300 , the suture needle  400  is more efficiently guided while being applied in a wide area. 
     Then, the suture thread  410  is pulled while fixing the suture thread  410  with the traction part of the suture needle  400  and discharged to the outside through the second, fourth, sixth, and eighth suture needle guide holes  113   a ,  230 ,  250 , and  330 . 
     Here, the suture thread  410  remains inserted into the first, second, third, fourth, fifth, sixth, seventh, and eighth needle guide holes  112   a ,  113   a ,  220 ,  230 ,  240 ,  250 ,  320 , and  330 . 
     Then, while pulling out the trocar unit  300  from the peritoneal hole  1   a , the suture thread  410  is removed from the first, second, third, fourth, fifth, sixth, seventh, and eighth needle guide holes  112   a ,  113   a ,  220 ,  230 ,  240 ,  250 ,  320 , and  330 , and then the peritoneal hole  1   a  of the peritoneum  1  is sutured with the suture thread  410  knot. 
     Here, the medical gas in the abdominal cavity is discharged through the gas supply/discharge unit  350  of the trocar unit  300 . 
     On the other hand, after releasing the coupling between the fitting hole  115  and the fitting protrusion  125   a  by elastically deforming the elastic part  125  with an external force, the coupling of the first and second bodies  110  and  120  may be released by pulling the first and second guide parts  112  and  113  out from the first and second grooves  122  and  123 . 
     In the above, although an exemplary embodiment of the present disclosure has been described for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the disclosure as disclosed in the accompanying claims. 
     DESCRIPTION OF THE REFERENCE NUMERALS IN THE DRAWINGS 
     
         
         
           
               100 : suture needle guide member 
               110 : first body 
               111 : through-hole 
               112 : first guide part 
               112   a : first suture needle guide hole 
               113 : second guide part 
               113   a : second suture needle guide hole 
               114 : stumbling block 
               115 : fitting hole 
               116 : protrusion 
               116   a : fitting hole 
               120 : second body 
               121 : through-hole 
               122 : first guide groove 
               123 : second guide groove 
               124 : space 
               125 : elastic part 
               125   a : fitting protrusion 
               126 : fitting hole 
               200 : trocar 
               210 : space 
               220 : third suture needle guide hole 
               230 : fourth suture needle guide hole 
               240 : fifth suture needle guide hole 
               250 : sixth suture needle guide hole 
               260 : fitting protrusion 
               270 : fitting protrusion 
               300 : trocar unit 
               310 : through-hole 
               320 : seventh suture needle guide hole 
               330 : eighth suture needle guide hole 
               400 : suture needle 
               410 : suture thread 
               1000 : trocar system for laparoscopic surgery