Abstract: A medical device having a function of promoting fusion between living body organs, which includes a sheet-like main body portion configured to promote fusion of anastomosis portions, a cylindrical portion that is disposed on a center portion side in a plane direction of the main body portion with respect to an outer peripheral portion in the plane direction of the main body portion, protrudes in a first direction intersecting the plane direction of the main body portion, and has a lumen, and a connection portion that connects the main body portion and the cylindrical portion, and the medical device 100 is configured so that a relationship among hardness of the cylindrical portion, hardness of the connection portion, and hardness of the main body portion satisfies the following expression (1): hardness of cylindrical portion >hardness of connection portion >hardness of main body portion (1).

Abstract: A medical member having flexibility and strength suitable for application to anastomotic portions, and having effectively improved breaking processability. The medical member includes a mesh-like main body that promotes adhesion of the anastomotic portions, in which the main body includes a breakable portion having a relationship between a breaking strength and a compression elongation percentage, represented by the following formulas (1) to (4): Y ? 244734 ? ( X - Z ) - 1.665 ( 1 ) 0 ? Z < 408.216 ( 2 ) X - Z > 0 ( 3 ) 39 ? X .

Abstract: To reduce the risk of a ruptured suture after a surgery or the like, a medical apparatus includes a biodegradable sheet in which a plurality of through-holes are formed, a value of a ratio (D/P) of a hole diameter D to a pitch P of the through-hole is in a range of 0.25 or more and less than 40. Such a medical apparatus is useful as an adhesion promoting device for promoting adhesion of biological tissue.

Abstract: A sheet-shaped cell culture for covering a cut surface of a pancreas, the cut surface of the pancreas includes cut surfaces of a pancreatic parenchyma and a pancreatic duct, and is connected to an intestinal wall of a small intestine in a liquid-tight manner via the sheet-shaped cell culture. A method for preventing or treating pancreatic fistula includes a step of covering, using a sheet-shaped cell culture, a cut surface of a pancreas that includes cut surfaces of a pancreatic parenchyma and a pancreatic duct, and a step of connecting the cut surface of the pancreas to an intestinal wall of a small intestine in a liquid-tight manner via the sheet-shaped cell culture.

Abstract: A medical device is disclosed capable of reducing risk factors of an anastomotic leakage after a surgical operation is performed. The medical device includes an adhesion promotion sheet configured to include an adhesion promotion portion promoting adhesion of biological tissues and a frame portion provided outside the adhesion promotion portion in a plane direction and a pulling unit connected to the adhesion promotion sheet and configured to deform a second region so as to cover at least a portion of an outer peripheral surface of a biological organ to be joined with a pulling operation.

Abstract: A medical device is disclosed, which capable of reducing risk factors of an anastomotic leakage after a surgical operation is performed. The adhesion promoting device includes an adhesion promotion sheet provided with an adhesion promotion portion that promotes adhesion of biological tissues, and a holding portion that allows the adhesion promotion sheet to be hooked and held on a biological organ to be joined.

Abstract: An adhesion promotion device is disclosed, which is capable of reducing risk factors of an anastomotic leakage after surgery. The adhesion promotion device includes a sheet-shaped first region disposed between one joint target site and the other joint target site of biological organs to promote adhesion of a biological tissue, a second region provided inward of the first region and separated from the first region in a direction intersecting with a surface direction of the first region, and an interlock portion that interlocks the first region and the second region with each other.

Abstract: Provided is a treatment method that reduces risk factors contributing to anastomotic leakage by using a medical device. The treatment method includes placing a medical device including a sheet-like main body portion for promoting adhesion between biological tissues between one joint target site and another joint target site of a biological organ to be joined, and joining the one joint target site and the other joint target site to each other in a state where at least a portion of the main body portion is interposed between the one joint target site and the other joint target site.

Abstract: An adhesion promotion device configured to reduce risk factors of an anastomotic leakage after a surgical operation is performed includes a main body portion and a reinforcement portion. The main body portion is formed of a biodegradable sheet that promotes adhesion of biological tissues and includes a plurality of through-holes. The reinforcement portion is disposed at a portion of the main body portion and reinforces the main body portion.

Abstract: 4 There are provided an adhesion promotion device and a medical device which are capable of effectively reducing risk factors of an anastomotic leakage. The adhesion promotion device has a main body portion formed of a biodegradable sheet having a plurality of through-holes and promoting adhesion of biological tissues, and an assistance unit provided in the main body portion and assisting the main body portion to hold a biological organ serving as an object to be joined.

Abstract: To reduce the risk of a ruptured suture after a surgery or the like, a medical apparatus includes a biodegradable sheet in which a plurality of through-holes are formed, a value of a ratio (D/P) of a hole diameter D to a pitch P of the through-hole is in a range of 0.25 or more and less than 40. Such a medical apparatus is useful as an adhesion promoting device for promoting adhesion of biological tissue.

Abstract: A medical tube 10 (drain tube 10) includes a main shaft tube 20, a flow path opening/closing mechanism 40, and a branch tube 30. The main shaft tube 20 internally has a main shaft side distal opening 21a and a main shaft lumen 21. The flow path opening/closing mechanism 40 brings the main shaft lumen 21 into a communicating state by applying pressure smaller than predetermined pressure, and brings the main shaft lumen 21 into a blocked state by applying pressure equal to or greater than the predetermined pressure. The branch tube 30 promotes a pancreatic juice pj to flow into a branch lumen 31, based on the applied pressure which is equal to or greater than the predetermined pressure.

Abstract: Provided is a treatment method that reduces risk factors contributing to anastomotic leakage by using a medical device. The treatment method includes placing a medical device including a sheet-like main body portion for promoting adhesion between biological tissues between one joint target site and another joint target site of a biological organ to be joined, and joining the one joint target site and the other joint target site to each other in a state where at least a portion of the main body portion is interposed between the one joint target site and the other joint target site.

Abstract: A medical tube 10 includes a main shaft tube 20 that internally has a main shaft lumen 21, and a plurality of branch tubes 30 connected to each other at an intermediate position in an axial direction of the main shaft tube 20. The branch tube 30 has a branch lumen 31 through which pancreatic juice flows into the main shaft lumen 21. In a state where the main shaft tube 20 is inserted into a pancreas 100, a distal end of the branch tube 30 is disposed at a position separated outward from the main shaft tube 20 in a radial direction between the pancreas 100 and a jejunum 200.

Abstract: A medical tube 10 (drain tube 10) includes a main shaft tube 20, a flow path opening/closing mechanism 40, and a branch tube 30. The main shaft tube 20 internally has a main shaft side distal opening 21a and a main shaft lumen 21. The flow path opening/closing mechanism 40 brings the main shaft lumen 21 into a communicating state by applying pressure smaller than predetermined pressure, and brings the main shaft lumen 21 into a blocked state by applying pressure equal to or greater than the predetermined pressure. The branch tube 30 promotes a pancreatic juice pj to flow into a branch lumen 31, based on the applied pressure which is equal to or greater than the predetermined pressure.

Abstract: A digestive tract device that can reduce an indwelling-induced burden on the living body includes: a tubular portion that includes a through hole; a holding portion that is provided on a proximal end side of the tubular portion, and holds the tubular portion in the living body; and support portions and which are provided in the holding portion, and are in contact with a plurality of sites of the digestive organ of the living body, and support the holding portion in such a way that the holding portion can move in at least one direction of a circumferential direction and a longitudinal direction of the tubular portion.

Abstract: A liner support frame is configured to be positioned in a gastrointestinal tract of a human and to support a liner which inhibits nutrient absorption and anchor the liner in place in the gastrointestinal tract, the liner support frame includes a plurality of frame members connected to one another so that the liner support frame possesses a plurality of openings. The liner support frame includes a plurality of frame portions arranged axially and possessing different tapers.

Abstract: A liner support frame is configured to be positioned in a gastrointestinal tract of a human and to support a liner which inhibits nutrient absorption and anchor the liner in place in the gastrointestinal tract, the liner support frame includes a plurality of frame members connected to one another so that the liner support frame possesses a plurality of openings. The liner support frame includes a plurality of frame portions arranged axially and possessing different tapers.

Abstract: A digestive tract device is configured to reduce the burden on a living body associated with the adjustment of the length of a tubular portion retained inside the living body and simplify a retention operation after introducing the digestive tract device into the living body. The digestive tract device includes a tubular portion provided with a main body having a through hole extending in the longitudinal direction and a tip opening continuous with the through hole and a folded-back portion formed by folding back the main body in the longitudinal direction, a holding unit which holds the folded-back portion in a folded-back state with the tip opening open, and a retention unit which is provided on the base end side of the tubular portion and retains the tubular portion inside a living body.

Abstract: A digestive tract device that can reduce an indwelling-induced burden on the living body includes: a tubular portion that includes a through hole; a holding portion that is provided on a proximal end side of the tubular portion, and holds the tubular portion in the living body; and support portions and which are provided in the holding portion, and are in contact with a plurality of sites of the digestive organ of the living body, and support the holding portion in such a way that the holding portion can move in at least one direction of a circumferential direction and a longitudinal direction of the tubular portion.