Olympus Corporation

Olympus Medical Systems Corporation

Kosuke Motai

Tetsuyuki Sakamoto

Takayasu Mikkaichi

Shotaro Takemoto

Kazushi Murakami

Ayano Ishioka

Takumi Dejima

Tsutomu Okada

Manabu Miyamoto

Kunihide Kaji

Yusuke Takei

Masatoshi Sato

Ken Yamatani

Satoko Suzuki

Takeharu Nakazato

Noriko Kuroda

Shinichi Tsutaki

Hidemichi Aoki

Toshihiro Shizuka

An endoscope system has an overtube having a proximal end and a distal end, and a main lumen and a sub lumen; an endoscope having a channel and inserted into the main lumen; a flexible shaft being advanceable and retractable in the sub lumen; a curved needle having a proximal end and a distal end; and a needle holder configured at a distal end of the shaft to hold the curved needle, wherein the held curved needle is movable to a first position protruding from a distal end opening of the sub lumen, and due to a rotation around the longitudinal axis, part of the curved needle held by the needle holder is movable from the first position in front of the distal end opening of the sub lumen to a second position in front of the channel of the endoscope inserted into the main lumen.

Endoscope system, curved needle delivery system, and curved needle delivery method

An endoscopic treatment device has a sheath extending between a distal end portion and a proximal end portion; a first/second wire inserted through the sheath, wherein the first/second wire can protrude from the distal end portion of the sheath and cut tissue by being applied with current; an insulative member configured to connect distal ends of the first wire and the second wire; and a first/second insulative tube configured to cover the first/second wire protruding from the sheath, wherein the first/second insulative tube can move with respect to the first/second wire respectively, wherein the endoscopic treatment device switches between a first state where the second wire protruding from the sheath is covered by the second insulative tube and a second state where the first wire protruding from the sheath is covered by the first insulative tube.

Septum resection method and endoscopic treatment device

A method for anastomosing an alimentary tract according to a first aspect of the invention includes a first step of inserting an endoscope into an alimentary tract through a natural opening in a state where a distal end part of a tube body is coupled to an outer periphery of a distal end part of the endoscope; a second step of making a hole in a tract wall of the alimentary tract; a third step of inserting the tube body through the hole; a fourth step of grasping the distal end part of the tube body disposed through the hole; a fifth step of separating the tube body from an outer periphery of the distal end part of the endoscope; and a sixth step of delivering the treatment part up to the hole after the fifth step.

Method for anastomosing alimentary tract

In a tissue binding method, a ring-shaped part () of a snare wire () is disposed at a position surrounding a binding target site, the tissue at the binding target site is pulled while the ring-shaped part () is pressed against the tissue around the binding target site at a plurality of pressing points that are located away from each other in the circumferential direction of the ring-shaped part (), and, in a state in which the tissue at the binding target site is pulled, the diameter of the ring-shaped part () is reduced to bind the tissue, while adjusting the position in the pressing direction at one or more of the pressing points.

Method for constricting tissue

Provided is a digestive-tract treatment method including: pulling, inside a digestive tract (A), an end portion of a first wall portion (A) positioned at a rim of a treatment target site (B), and moving the first wall portion (A) to a position on a second wall portion (A) on an opposite side of the treatment target site (B) from the first wall portion (A); and joining the first wall portion (A) and the second wall portion (A) in a state in which the first wall portion (A) and the second wall portion (A) are layered.

Digestive-tract treatment method

A device suturing device includes a flexbile tubular insertion portion; a suturing portion disposed at a distal end portion thereof holding a tubular anchor through which a suture thread is insertable; an operation portion disposed at a proximal end portion of the insertion portion; and a suture thread grasping portion inserted through the insertion portion and insertable through the anchor, wherein the suturing portion includes an installation surface on which the anchor is held; a pressing member including a convex portion being arranged to face the installation surface for pressing the anchor; and a driver operating the pressing member via the operation portion, wherein a concave portion is formed on the installation surface into which the convex portion is enterable, and the anchor is sandwiched between the concave portion and the convex portion to be swaged and deformed such that the suture thread is fixed to the anchor.

Suturing device

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.

Method of delivering and recovering curved needle

A medical instrument introduction device, includes an outer tube portion indwelled within a body wall; and an inner needle portion inserted through the outer tube portion, wherein the outer tube portion includes a base portion; a tubular conduit portion whose proximal end portion is connected to the base portion; and an anchor portion connected to a distal end portion of the conduit portion, wherein the conduit portion has a bellows folded shape in a natural state, a dimension of the conduit portion in an axial direction being capable of being increased as the folded shape is stretched by the inserted inner needle portion, and a force needed for stretching the folded shape being gradually decreased in a direction from the proximal end portion to a distal end portion of the conduit portion, and the anchor portion and the inner needle potion are couplable with each other.

Medical instrument introduction device and treatment method of using the same

A pushing tool of the present invention includes a tissue pushing part having a shaft portion that is formed in a rod-shape, a linear portion including a pressing portion that is connected to the shaft portion and extends in a longitudinal direction, and a stopper maintaining an angle between the shaft portion and the linear portion at a desired angle when the pressing portion is closely pressed against an outer surface of a hollow organ.

Pushing tool, tissue-suturing system and method of suturing a hollow organ

A suture body includes: a suture thread having a first end and a second end and fixed to a living tissue; a suture needle connected to the first end; and a thread fixing member connected to the second end. The thread fixing member includes: a rod-shaped protruding portion; and an elastic member having an outer circumferential surface and arranged so that the thread fixing member is in contact with the outer circumferential surface at a predetermined contact pressure. The suture body is configured so that the suture thread can enter between the protruding portion and the elastic member by elastically deforming the elastic member. The suture body further includes a base body to which the protruding portion and the elastic member are fixed. The protruding portion and the elastic member are arranged in an area surrounded by an outer diameter of the base body.

Suture body and suture system

A suture member includes: a suture needle of which a distal end is sharp; a suture thread which includes a first end portion and a second end portion, of which the first end portion is connected to the suture needle, and which sutures the tissue; a first loop portion which has a ring shape, through which the suture needle is capable of passing, and which is connected to the second end portion; and a second loop portion which has a ring shape, through which the suture needle is capable of passing, which is connected to the second end portion, and which is provided to separate from the first loop.

Suture member

A tissue removal system is provided which enables optimally performing a full-thickness resection of a hollow organ while minimizing invasiveness. In this tissue removal system, a tissue pressing tool which has a tissue contacting part and which is guided into the abdominal cavity, and a resection and anastomosis device work together. The resection and anastomosis device resects and performs anastomosis of tissue positioned between a main body and an anvil part, and, when pressing the tissue to be cut to the cutting position of the resection and anastomosis device by means of the tissue contacting part, the tissue contacting part is pressed against two abutment parts of the resection and anastomosis device.

Tissue removal system

The present energy treatment device has an insertion part, a pair of arms which are provided in a distal portion of the insertion part and which are capable of performing an opening-closing operation, a treatment member which is attachably and detachably provided in a first arm, a locked part which is provided in a second arm and which is capable of locking the treatment member, and a manipulation part which causes the pair of arms to perform an opening-closing operation, wherein the treatment member includes a knife wire, and a locking member which is positioned with respect to the first arm, being attachable to and detachable from the first arm, and capable of being locked by the locked part, the locked part has a retainer which is capable of holding the locking member with a force stronger than a force of the first arm to hold the locking member.

Energy treatment device

An incision instrument includes an insertion section and a manipulation section. The insertion section includes a first insulating member and an incision section inserted within the first insulating member. The incision section includes a tubular shaped first conductive member which has conductivity; a second conductive member disposed in the first conductive member; a contact section provided on an outer circumference surface of the second conductive member; and a second insulating member fixed to a distal end of the first conductive member and having an opening section. The manipulation section includes a manipulation main body section and a handle member. The second insulating member is positioned between the contact section and the first conductive section in a state in which the second conductive member is protruded from the opening section of the second insulating member.

Incision instrument

A tissue resection method of resecting a portion of a hollow organ includes a first step of specifying a position and a range of a resection target tissue from the inside of the hollow organ and showing the position and the range in a visually recognizable manner from the inside of a body cavity; a second step of bringing a bioabsorbable member introduced into the body cavity into contact with the resection target tissue and pressing the resection target tissue, thereby inverting the resection target tissue to the inside of the hollow organ; and a third step of resecting the inverted resection target tissue over all layers from the inside of the hollow organ and performing anastomosis of a hole formed in the hollow organ from the inside of the hollow organ.

Growing community of inventors

Hidaka, Japan

Kosuke Motai