Abstract: A nose knife with good usability and little interference with tools such as an endoscope in nasal cavity surgery is provided, and includes a handle, a shank, and a blade. The shank includes a straight part connected straight to the handle along the same axis, and a curved part integrally connected to the front end of the straight part. The blade is provided at the front end of the curved part. A tip of the blade is angled 65 degrees to 75 degrees inclusive relative to the axis of the straight part.

Abstract: There is provided a piercing needle-equipped cannula that has a pre-attached piercing needle, and no deformation of the slit portion due to the piercing needle is left after the piercing needle is pulled out. A piercing needle-equipped cannula (100) includes: a cannula (10) pierced in an eyeball and used in ophthalmic operations; a resin cap (13) having a slit (13a) opened in the cannula (10); and a piercing needle (15) attached to the cannula (10). The piercing needle (15) includes a needle main body (15c) on a front end side, a base (15d) on a base end side, and a slit piercing part (15s) piercing the slit (13a) in a state where the needle main body (15c) and the base (15d) are connected, and the cross-sectional area of the slit piercing part (15s) is smaller than that of the thickest part of the needle main body (15c).

Abstract: Provided is a two-dimensional code display medium which displays a distinctive two-dimensional code that is readily noticeable by itself, as well as being easy for a person to visually determine whether or not the two-dimensional code is the person's desired code. The two-dimensional code display medium according to the present invention is characterized by being provided with an information display surface having therein a display region for displaying a two-dimensional code, wherein the information display surface is square, and one side of the two-dimensional code and one side of the information display surface form an oblique angle therebetween. Further, the oblique angle is preferably 45 degrees.

Abstract: A medical suture needle made of stainless steel includes a cutting blade component and a body part continuing to the cutting blade component. The cutting blade component, whose degree of thickness decreases from the body part to a sharp point, includes a first cutting blade part and a second cutting blade part continuing from the first cutting blade part. The first cutting blade part includes two first slanted surfaces formed sandwiching an apex and a first bottom surface sandwiched by the two first slanted surfaces. Cutting blades are formed at an edge constituting the apex and at edges where the first bottom surface and the two first slanted surfaces intersect. The second cutting blade part includes first slanted surfaces, second slanted surfaces having rims approximately parallel to the apex and formed on the respective first slanted surfaces, and a second bottom surface sandwiched by the second slanted surfaces.

Abstract: The goal is to provide a medical suture needle having, as the material, austenite stainless steel with a structure that is elongated in a fiber form while improving the hardness and flexural strength of the cutting portion. A medical suture needle is made of austenite stainless steel having a structure that is elongated in fiber form, and has a cutting portion and a body portion with a triangular cross-sectional shape that is continuous with said cutting portion. The cutting portion has cutting edges, at least one surface of which is formed by a pressed surface, and which are formed by the intersection of said pressed surface with two sharpened surfaces, and a cutting edge that is formed by the intersection of the two sharpened surfaces. The tip where the various cutting edges and converge is positioned in the center of the pressed surface.

Abstract: A backflush needle allowing maintaining the shape of a soft member at the tip when passing through a cannula. A backflush needle is used in an ophthalmic operation with the backflush needle passed through a cannula attached to an eyeball. The needle includes a tubular needle main body to pass through the cannula, a tubular soft member connected to a front end of the needle main body, and a rod-shaped core member to pass through respective tubular hollow cavities of the needle main body and the soft member. The core member is axially movable, allowing protrusion of a front end of the core member from the soft member and retraction of the front end until a position detached from the needle main body.

Abstract: An infusion pipe capable of achieving a flow rate higher or the same as that of a conventional product, and of easily joining to a cannula attached to an eyeball. The infusion pipe of the present invention is used in an ophthalmic operation with the infusion pipe joined to a cannula attached to an eyeball, and includes an insertion part to be inserted, at the time of joining to the cannula, inside a cannula piercing part, which is a part of the cannula for piercing the eyeball. A cross-section of the insertion part is an arc shape from which a part of a circle is cut out.

Abstract: A vitreous body cutter that allows wide movement of an opening position at the end part of a pipe even when the pipe is thin and that allows suction of vitreous bodies etc. in a wide range. The vitreous body cutter includes: a pipe having an opening on the side of an end part; a cutter, which slides along the inner surface of the pipe; a power output section, which is connected to the pipe and slides the cutter; and an outer case, through which the pipe passes, and which includes the power output section inside; and further includes a joint for connecting the outer case to a cannula attached to an eyeball. The protrusion length of the pipe from the outer case can be changed.

Abstract: Strength of a front end part having a sharp point of a medical suture needle is maintained and resistance when piercing tissue is reduced. There is provided a medical suture needle having a triangular cross section made of austenitic stainless steel having a fibrously extending structure, having two first slanted surfaces (11) ground and sandwiching a ridge (20), and a bottom surface (13) sandwiched between the two first slanted surfaces and ground. The ridge is formed comprising a first cutting blade (1) that is formed by the two first slanted surfaces (11) intersecting, a ridge part (20) that is formed on a body part side of the first cutting blade without the first slanted surfaces (11) intersecting, and a second cutting blade (2) that is formed by two second slanted surfaces (12) ground, intersecting and sandwiching the first cutting blade (1) on a front end side of the first cutting blade (1).

Abstract: A medical knife configured such that a cutting blade does not face upward when placed on a stand. A medical knife (10) includes a handle (20) and a cutting portion (30). The handle (20) includes a protrusion (20a) that makes point contact with a flat surface or makes line contact with the flat surface along the axis of the handle when trying to place the medical knife on the flat surface with a cutting blade (30a) of the cutting portion (30) of the medical knife facing upward. Moreover, the protrusion (20a) makes contact with a horizontal surface at a position deviating from a position defined by a line extending downward vertically from the center of gravity of the medical knife (10).

Abstract: Method of producing a medical cutting tool and a medical cutting tool that will not rust and that is capable of stably demonstrating high strength. A working section formed by a cemented carbide or ceramic is brazed to the tip of a shank part formed by a round bar-shaped austenitic stainless steel, thereby constituting a cutting tool. The shank part includes a shank, a neck, and a joint to which the working section is brazed. At least part of the stainless steel near the joint of the neck and in the joint has a fiber-like structure. The structure of the stainless steel in the joint on the working section side has a granular structure.

Abstract: A nose knife with good usability and little interference with tools such as an endoscope in nasal cavity surgery is provided. A nose knife (10) of the present invention includes a handle (13), a shank (11), and a blade (12). The shank (11) includes a straight part (11a) connected straight to the handle (13) along the same axis, and a curved part (11b) integrally connected to the front end of the straight part (11a); and the blade (12) is provided at the front end of the curved part (11b), and direction of a blade tip (12b) of the blade (12) is 65 degrees to 75 degrees inclusive to the axis line of the straight part (11a).

Abstract: A method of producing a medical cutting instrument. Medical cutting instrument is provided which stably exhibits high joint strength obtained by brazing. Cutting instrument is configured by providing a working section to a front end of a shank section. Working section consists of a carbide or a ceramic, shank section being constructed from round stainless steel bar or round tool steel bar. Shank section and working section are connected through a brazed section. Brazed section is portion at which shank section and working section are brazed together while brazing surfaces, which are provided with protrusion sections formed on shank section and/or working section, are caused to be in contact with each other. Protrusion sections each have sloped surfaces having an apex, and the height of the sloped surfaces is set in range of 0.5%-8%, inclusive, of the diameter of the brazing surface of the shank section.

Abstract: [Problem] To provide a medical cutting tool with low impalement resistance. [Solution] The edged medical cutting tool comprising a knife, trocar or cutting suture needle has a sharp edge (1) for incising living tissue and a flat part (2) that configures the edge, and the color of the portion of the flat part (2a) along the edge (1) differs from the color of the rest of the flat part (2b). The difference in color results from a difference in the thickness of an oxide film. Another edged medical cutting tool is configured of austenite stainless steel and has a sharp edge (1) for incising living tissue and a flat part (2) that configures the edge. The chrome content of the portion of the flat part (2a) along the edge is higher than the chrome content of the rest of the flat part (2b).

Abstract: A method of packaging medical supplies includes overlapping a front film onto a back film, at least one of the front and back film being transparent and bacteria impermeable and does not transmit molecules as large as or larger than O2, extending a material that is gas permeable and bacteria impermeable along an opening side of at least one of the front and back film, and sealing the periphery of the front and back films except for the opening to form a packaging bag; inserting medical supplies in the packaging bag and then sealing the bag; sterilizing an interior of the packaging bag with EO gas injected through the material that is gas permeable and bacteria impermeable, removing the gas after sterilization and drying; and sealing the packaging bag so that the material that is gas permeable and bacteria impermeable does not communicate with the inside of the packaging bag.

Abstract: A medical suture needle made of stainless steel includes a cutting blade component and a body part continuing to the cutting blade component. The cutting blade component, whose degree of thickness decreases from the body part to a sharp point, includes a first cutting blade part and a second cutting blade part continuing from the first cutting blade part. The first cutting blade part includes two first slanted surfaces formed sandwiching an apex and a first bottom surface sandwiched by the two first slanted surfaces. Cutting blades are formed at an edge constituting the apex and at edges where the first bottom surface and the two first slanted surfaces intersect. The second cutting blade part includes first slanted surfaces, second slanted surfaces having rims approximately parallel to the apex and formed on the respective first slanted surfaces, and a second bottom surface sandwiched by the second slanted surfaces.

Abstract: Method of producing a medical cutting tool and a medical cutting tool that will not rust and that is capable of stably demonstrating high strength. A working section formed by a cemented carbide or ceramic is brazed to the tip of a shank part formed by a round bar-shaped austenitic stainless steel, thereby constituting a cutting tool. The shank part includes a shank, a neck, and a joint to which the working section is brazed. At least part of the stainless steel near the joint of the neck and in the joint has a fiber-like structure. The structure of the stainless steel in the joint on the working section side has a granular structure.

Abstract: There is provided a piercing needle-equipped cannula that has a pre-attached piercing needle, and no deformation of the slit portion due to the piercing needle is left after the piercing needle is pulled out. A piercing needle-equipped cannula (100) includes: a cannula (10) pierced in an eyeball and used in ophthalmic operations; a resin cap (13) having a slit (13a) opened in the cannula (10); and a piercing needle (15) attached to the cannula (10). The piercing needle (15) includes a needle main body (15c) on a front end side, a base (15d) on a base end side, and a slit piercing part (15s) piercing the slit (13a) in a state where the needle main body (15c) and the base (15d) are connected, and the cross-sectional area of the slit piercing part (15s) is smaller than that of the thickest part of the needle main body (15c).

Abstract: A medical knife configured such that a cutting blade does not face upward when placed on a stand. A medical knife (10) includes a handle (20) and a cutting portion (30). The handle (20) includes a protrusion (20a) that makes point contact with a flat surface or makes line contact with the flat surface along the axis of the handle when trying to place the medical knife on the flat surface with a cutting blade (30a) of the cutting portion (30) of the medical knife facing upward. Moreover, the protrusion (20a) makes contact with a horizontal surface at a position deviating from a position defined by a line extending downward vertically from the center of gravity of the medical knife (10).

Abstract: There is provided a method of manufacturing a vitreous body surgical probe that is easily manufactured and has a flat end outer surface and a flat end inner surface. A method for manufacturing a vitreous body surgical probe (10) includes the steps of; bringing a steel plate (30) in contact with an end surface of a steel pipe (20); and irradiating an energy beam (50) from the steel plate side along the outer circumference of the pipe end surface. The steel plate is cut through irradiation of the energy beam (50), and the pipe (20) and the steel plate (30) are welded together simultaneously. Alternatively, a step of using the same energy beam for cutting and welding the steel plate may be added.