Method of delivering and recovering curved needle

A method of delivering and recovering a curved needle includes a step of inserting a first needle holder into abdominal cavity, a step of inserting a second needle holder holding a curved needle into gastrointestinal tract, a step of penetrating gastrointestinal wall with the curved needle to protrude the curved needle to the abdominal cavity, a step of removing the curved needle from the gastrointestinal wall and delivering the curved needle and the suture thread to the abdominal cavity, a suture step of suturing tissues in the abdominal cavity, a step of protruding the curved needle to the gastrointestinal tract, a step of removing the curved needle from the gastrointestinal wall and returning the curved needle from the abdominal cavity to the gastrointestinal tract, and a step of taking out the curved needle from the gastrointestinal tract to outside of body to recover the curved needle.

TECHNICAL FIELD

The present invention relates to a method of delivering a curved needle into and recovering the curved needle from abdominal cavity of a patient.

BACKGROUND ART

Nowadays, a laparoscopic surgery with respect to various organs as treatment targets is employed. Generally, in the laparoscopic surgery, a hole is made on the abdominal wall and a trocar is disposed into the hole. Further, a laparoscope and various treatment tools are introduced into the abdominal cavity via the trocar.

The laparoscopic surgery is minimally invasive compared with a laparotomy surgery, however, method of achieving more minimally invasive is studied. A method of using a thinner trocar is proposed, however, a curved needle used for suturing cannot pass through if the trocar is too thin.

In Japanese Unexamined Patent Application, First Publication No. 2003-284722, an anastomotic device configured to be introduced into the gastrointestinal tract for an anastomosis of the stomach and the jejunum is disclosed.

SUMMARY OF INVENTION

The present invention relates to a method of delivering and recovering a curved needle.

This method has a step of inserting a first needle holder into abdominal cavity via a hole made on abdominal wall, a step of inserting a second needle holder holding a curved needle with a suture thread into gastrointestinal tract via natural orifice, a step of penetrating gastrointestinal wall with the curved needle held by the second needle holder from the gastrointestinal tract toward the abdominal cavity to protrude part of the curved needle to the abdominal cavity, a step of removing the curved needle and the suture thread from the gastrointestinal wall and delivering the curved needle and the suture thread to the abdominal cavity by holding and pulling the part of the curved needle protruded to the abdominal cavity by the first needle holder, a suture step of suturing tissues using the curved needle held by the first needle holder, a step of sticking the curved needle into the gastrointestinal wall from the abdominal cavity toward the gastrointestinal tract to protrude part of the curved needle to the gastrointestinal tract after the suture step, a step of removing the curved needle and the suture thread connected to the curved needle from the gastrointestinal wall and returning the curved needle from the abdominal cavity to the gastrointestinal tract by holding and pulling the part of the curved needle protruded to the gastrointestinal tract by the second needle holder, and a step of taking out the curved needle from the gastrointestinal tract to outside of body via the natural orifice to recover the curved needle while keeping a state of holding the curved needle by the second needle holder.

DESCRIPTION OF EMBODIMENT

An embodiment of the present invention will be described by referring toFIG. 1toFIG. 9.

A method of delivering and recovering a curved needle according to the present embodiment is employed by at least two surgeons including a first surgeon in charge of procedures in the abdominal cavity and a second surgeon in charge of procedures in the gastrointestinal tract. Other assistance such as a laparoscope scopist and the like may be added besides the two surgeons.

The first surgeon forms a hole at the abdominal wall Aw and inserts a needle holder (first needle holder)11into the hole to introduce a laparoscope12and the first needle holder11into the abdominal cavity Ac, as shown inFIG. 1(Step A). A trocar may be disposed at the hole made at the abdominal wall Aw and the first needle holder11may be introduced into the abdominal cavity Ac via the trocar.

The second surgeon inserts a flexible needle holder (second needle holder)52from a forceps port of a flexible endoscope51and protrudes a distal end portion of the second needle holder52from a distal opening of the flexible endoscope51, as shown inFIG. 2. Further, a curved needle101with a suture thread102is held by a holding portion of the second needle holder52protruded from the distal opening, and the flexible endoscope51and the second needle holder52are inserted into an overtube70(seeFIG. 3).

The second surgeon inserts the overtube70into the gastrointestinal tract of a patient from natural orifice such as mouth, anus, and the like, and moves a distal end portion of the overtube70and the curved needle101held by the second needle holder52to the vicinity of a target site of the laparoscopic surgery (Step B). At this time, the curved needle101held by the second needle holder52is configured to maintain the flexible endoscope51at a position not to protrude from a distal end of the overtube70such that the curved needle101can be prevented from coming contact with the gastrointestinal tract D.

The first surgeon confirms a position of the distal end portion of the overtube70in the gastrointestinal tract by the laparoscope12. Methods shown as follows can be given as examples of a method of the confirmation.confirming based on illumination light by the flexile endoscope51requesting the second surgeon to press the gastrointestinal wall using the overtube70for finding a deformed portion

In the case of confirming based on the illumination light by the flexible endoscope51, since the illumination light by the laparoscope12is brighter than the illumination light by the flexible endoscope51generally, the illumination light by the laparoscope12may be adjusted to be dark so as to find the illumination light by the flexible endoscope51easily.

Other methods such as attaching ink and the like to the gastrointestinal tract for marking, and using marking device such as a magnet and the like may be adopted.

The first surgeon confirms the position of the distal end portion of the overtube70and takes the position of the distal end portion of the overtube, positions of organs in the vicinity thereof, and distributions of the blood vessels and nerves into consideration to determine a transfer position of the curved needle101at the gastrointestinal tract D and inform the second surgeon with the transfer position. Methods shown as follows can be given as examples of a method of informing the second surgeon with the transfer position.using the first needle holder11and the laparoscope12to press the transfer position so as to deform an inner wall of the gastrointestinal tract D into a convex shapemoving the illumination of the distal end portion of the laparoscope12to approach the transfer position and intensely illuminating the transfer position by the laparoscope12

Other methods such as the method of marking by ink, and using marking device may be adopted.

The second surgeon confirms the transfer position and protrudes the flexible endoscope51and the distal end portion of the second needle holder52from the overtube70. Subsequently, shown asFIG. 4, the second surgeon operates the flexible endoscope51to penetrate a wall of the gastrointestinal tract D (gastrointestinal wall) with the curved needle101held by the second needle holder52from the gastrointestinal tract toward the abdominal cavity and protrudes a distal end of the curved needle101ato the outside of the gastrointestinal tract D, that is, into the abdominal cavity (Step C).

The Step C is employed while observing the inside of the gastrointestinal tract D such that the curved needle101is stuck into the gastrointestinal wall while being kept in an observation view-field of the flexible endoscope51. At this time, since the postoperative care is easy, as shown inFIG. 5, it is prefer that the distal end of the curved needle101which is stuck into the gastrointestinal wall is moved inside the gastrointestinal wall in a direction along a wall surface to cause a sticking position P1and a position P2protruded to the abdominal cavity to be different with each other in at least one of a longitudinal direction and a circumferential direction of the gastrointestinal tract D.

The first surgeon holds the curved needle101protruded to the abdominal cavity by the first needle holder11and the second surgeon relaxes the holding by the second needle holder52. Accordingly, the curved needle101and the suture thread102are transferred from the second52needle holder to the first needle holder11. When the first surgeon removes the curved needle101and the suture thread102from the gastrointestinal wall by the first needle holder11, as shown inFIG. 6, both of the curved needle101and the suture thread102are delivered from the gastrointestinal tract D to the abdominal cavity Ac (Step D). The first surgeon moves the curved needle101and the suture thread102being held toward suturing target tissues in the abdominal cavity.

The first surgeon uses the curved needle and the suture thread to suture the suturing target tissues (suture step). The suturing target tissues varies including various luminal organs, details will be described later, in this embodiment, an example of suturing a hole formed in the peritoneum during a hernia sac excision will be described.

The first surgeon removes the hernia sac and covers a hole formed in the muscular layer with a mesh200. Thereafter, as shown inFIG. 7, the first surgeon uses the curved needle101and the suture thread to suture a hole H formed in the peritoneum Pr so as to reduce the hole H.

When the desired suture is finished, the first surgeon cuts the suture thread102to separate the curved needle101from the sutured tissues and returns the curved needle101to the gastrointestinal tract D. Firstly, the first surgeon informs the second surgeon with a position where the curved needle101is stuck into the gastrointestinal wall. Communication of the sticking position can be employed in the same way as the communication of the transfer position, however, it is noted that the curved needle101is held by the second needle holder11.

After the second surgeon confirms the sticking position, as shown inFIG. 8, the first surgeon penetrates the gastrointestinal wall with the curved needle101held by the first needle holder11from the abdominal cavity Ac toward the gastrointestinal tract D to protrude the distal end101aof the curved needle101to the gastrointestinal tract D (Step E). In the Step E, the second surgeon recognizes a position where the curved needle101protrudes to the gastrointestinal tract by capturing the sticking position by the first surgeon in the observation view field of the flexible endoscope51from the inside of the gastrointestinal tract D. Then, in the state in which the position where the curved needle101protrudes to the gastrointestinal tract is captured in the observation view field of the flexible endoscope51, the first surgeon sticks the curved needle101into the gastrointestinal tract D to protrude part of the curved needle101to the gastrointestinal tract. At this time, in the same way as the Step C, the curved needle101which is stuck into the gastrointestinal wall may be moved inside the wall to make the curved needle101to be protruded at a different position from the sticking position. That is, the curved needle101may be obliquely stuck into the gastrointestinal wall so as to make the curved needle101to be protruded at a position displaced from the sticking position.

When the second surgeon holds the curved needle101protruded to the gastrointestinal tract D by the second needle holder52and the first surgeon relaxes the holding by the first needle holder11, the curved needle is transferred from the first needle holder11to the second needle holder52. When the second surgeon uses the second needle holder52to remove the curved needle101from the gastrointestinal wall, as shown inFIG. 9, both of the curved needle101and the suture thread102are delivered from the abdominal cavity Ac into the gastrointestinal tract D (Step F). The second surgeon retracts the flexible endoscope51and the second needle holder52with respect to the overtube70to move the curved needle101into the overtube70. The overtube70, the flexible endoscope51, and the second needle holder52are removed to the outside of the body to recover the curved needle101(Step G).

The method of delivering and recovering a curved needle according to the present embodiment is finished.

As described above, in the method of delivering and recovering a curved needle according to the present embodiment, the curved needle101is delivered into the abdominal cavity by being introduced into the gastrointestinal tract via the natural orifice, being stuck into the gastrointestinal wall and protruded to the abdominal cavity, and being received by the first needle holder in the abdominal cavity. Accordingly, the curved needle101can be delivered into the abdominal cavity without passing through the abdominal wall. As a result, different from the anastomotic device disclosed in Japanese Unexamined Patent Application, First Publication No. 2003-284722, it is possible to suture tissues apart from the gastrointestinal tract where the curved needle101is received.

Generally, a curved needle has a circular arc shape and a minimum length of a chord of the circular arc shape is substantially 8 millimeters. Accordingly, a trocar having an inner diameter of substantially 10 millimeters is necessary for delivering the curved needle into the abdominal cavity through the abdominal wall. Thus, in a laparoscope surgery together with suture procedures, it is necessary to enlarge at least one hole among the holes formed on the abdominal wall so as to make the curved needle can pass through the hole, and there is a limitation to reduce the invasion with respect to the patient.

When the method of delivering and recovering a curved needle according to the present embodiment is applied to the laparoscope surgery, it is not necessary to take the matter of passing the curved needle through the trocar and the hole formed on the abdominal wall into consideration, thus it is possible to achieve the goal of reducing the invasion to the patient at a higher level. For example, it is possible to forma hole with a diameter of substantially 3 millimeters on the abdominal wall and directly insert a small-diameter laparoscope and treatment tools through the hole to employ procedures without installing a trocar.

Various modifications can made to the method of delivering a curved needle according to the present embodiment. Hereinafter, several modifications will be described as examples, however, these modifications are not limited thereto and other modifications are possible. Also, two or more than two modifications may be suitably combined.Before moving the curved needle101into the gastrointestinal tract D, the overtube70may be placed in the gastrointestinal tract D in advance by using the flexible endoscope51and the overtube70only.Since complicated suture is not employed in the gastrointestinal tract D and the curved needle101only has to be stuck into the gastrointestinal wall, a general grasping forceps may be adopted as the second needle holder.Either of introducing the first needle holder11into the abdominal cavity or introducing the second needle holder52into the gastrointestinal tract may be employed at first, and introducing the first needle holder11into the abdominal cavity and introducing the second needle holder52into the gastrointestinal tract may be employed parallelly.Before the Step C, if necessary, the first surgeon may move the organs and tissues in the vicinity of the gastrointestinal tract to secure a region for making the curved needle101protrude to the abdominal cavity safely.In the suture step, to secure a space inside the abdominal cavity, a gas suction may be employed in the gastrointestinal tract for narrowing the gastrointestinal tract. In other words, when the suture procedures are employed in the abdominal cavity, a broad space in the abdominal cavity can be secured by employing the gas suction in the gastrointestinal tract.When the curved needle is stuck in the gastrointestinal tract, gas may be supplied into the gastrointestinal tract for widening the gastrointestinal tract. In this case, a tension is imparted to the gastrointestinal wall so as to make the puncture be easy or prevent the curved needle from sticking a wall facing the wall where the curved needle is stuck from the abdominal cavity side to the gastrointestinal tract.

Next, several examples of procedures to which the method of delivering and recovering a curved needle according to the present embodiment can be suitably applied will be described.

A Sleeve Gastrectomy is a surgical procedure of reducing a volume of the stomach by surgical removal of a portion of the stomach at the Greater Curvature side so as to make the stomach into a thin shape as a banana. In a case where the method of delivering and recovering a curved needle according to the present embodiment is applied to this surgical procedure, it just needs to introduce the flexible endoscope51and the second needle holder52into the stomach and stick the curved needle101in the stomach wall so as to protrude the curved needle101to the abdominal cavity.

In the Sleeve Gastrectomy, as shown inFIG. 10, it is preferable to transfer the curved needle from the inside of the Stomach St toward the abdominal cavity at a dissection region R1since there is no damage to the remaining tissues after the procedure. Since it is easy to confirm the protruded curved needle101using the laparoscope12, it is preferable to use a portion at an anterior wall side of the stomach in the dissection region R1. When the curved needle101is protruded at the anterior wall side, there is an advantage that a possibility that the curved needle101comes in contact with the gastro-epiploic artery becomes lower and also a possibility that the curved needle101collides with organs surrounding the stomach St becomes lower.

In the Sleeve Gastrectomy, it is possible to reinforce a staple line formed during the dissection using the curved needle delivered into the abdominal cavity.

It is preferable to transfer the curved needle101from the inside of the abdominal cavity toward the inside of the stomach St at the anterior wall side of the remaining stomach corpus (region R2shown inFIG. 10) after the dissection. Since a wall at the region R2is thinner than that of the pyloric Py, it is easy to stick the curved needle101during the transfer. Further, a possibility that the curved needle101collides with the surrounding organs is low.

As shown inFIG. 11, a Roux-en-Y Gastric Bypass is a surgical procedure of dividing the stomach St into a pouch P having a small volume and a remaining stomach Gr and anastomosing the pouch P with the jejunum J. In a case of applying the method of delivering and recovering a curved needle according to the present embodiment to this surgical procedure, it just needs to introduce the second needle holder52into the stomach and stick the curved needle101in the stomach wall so as to protrude the curved needle101to the abdominal cavity.

Similar to the Sleeve Gastrectomy, it is preferable to transfer the curved needle101from the inside of the stomach St toward the abdominal cavity at the anterior wall side of the stomach. In a case where the curved needle101is transferred before dividing the stomach St, the curved needle101may be transferred at either of the pouch P or the remaining stomach Gr. In a case where the curved needle101is transferred after dividing the stomach St, the curved needle101is transferred at the pouch P.

In the Roux-en-Y Gastric Bypass, it is possible to reinforce staple lines formed at the pouch P and the remaining stomach Gr during the dividing of the stomach St, deploy the anastomosis of the pouch P and the jejunum J, or reinforce a staple line formed at the anastomosis region of the pouch P and the jejunum J.

It is preferable to transfer the curved needle101from the inside of the abdominal cavity toward the inside of the stomach St at the anterior wall side of the pouch P.

The method of delivering and recovering a curved needle according to the present embodiment can also be applied to a Colectomy of dissecting a region R3(seeFIG. 12) of the colon Cl where a dissection target lesion L such as a polyp or a tumor, and the like is positioned, and deploying an anastomosis of the remaining parts of the colon. In this case, it just needs to introduce the flexible endoscope51and the second needle holder52from the anus into the inside of the colon Cl and stick the curved needle101in a wall of the colon Cl so as to protrude the curved needle101to the abdominal cavity.

Generally, there is no problem to transfer the curved needle101from the inside of the colon Cl toward the abdominal cavity in a portion of the colon outside of the pelvis, however, it is preferable to transfer the curved needle101in a portion apart from the dissection target lesion L by a predetermined distance or more than the predetermined distance and closer to the anus. When the curved needle101is transferred in such a portion, a possibility that the curved needle101comes in contact with the dissection target lesion L is low, and the dissection target lesion L does not come in contact with the overtube70or the flexible endoscope51. Further, an insertion amount of the overtube70or the flexile endoscope51is reduced so as to deploy the procedure easily.

It is preferable to transfer the curved needle101from the inside of the abdominal cavity toward the colon Cl in a portion closer to the anus than an anastomosis portion after the suture procedure.

In the Colectomy, it is possible to reinforce the colon anastomosis portion using the curved needle101delivered into the abdominal cavity.

(Procedures by Cooperating Laparoscope and Endoscope)

The method of delivering and recovering a curved needle can also be applied to procedures deployed by cooperating a laparoscope and an endoscope such as a Laparoscopy and Endoscopy Cooperative Surgery (LSCS) or a Non-exposed Endoscopic Wall-inversion Surgery (NEWS), and the like.

In a case where a hole is formed at the gastrointestinal tract during the procedure, the curved needle101can be delivered into the abdominal cavity from the hole formed at the gastrointestinal tract during the procedure. In a case where the gastrointestinal tract is dissected by using a stapler and the like without forming a hole at the gastrointestinal tract, similar to the embodiment described above, the curved needle can be delivered and recovered between the gastrointestinal tract and the abdominal cavity by sticking the curved needle101to the gastrointestinal wall.

The method of delivering and recovering a curved needle according to the present embodiment can be applied to a uterine myomectomy. In this case, defect closure after the uterine myomectomy can be deployed using the delivered curved needle.

Tissues in living body to which the method of delivering and recovering a curved needle according to the present embodiment is applied may be mesentery. In this case, the suture step includes a procedure of suturing a mesentery with another mesentery.

Tissues in living body to which the method of delivering and recovering a curved needle according to the present embodiment is applied may be greater omentum. In this case, the suture step includes a procedure of suturing the greater omentum with a luminal organ.

An embodiment and several application examples of the present invention have been described above, however, technical scope of the present invention is not limited to the embodiment and the application examples. Additions, omissions, substitutions and other changes in the structure are possible without departing from the spirit of the present invention.