摘要:
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. Moreover, the cutting edges formed by the intersection of the above pressed surface with the two sharpened surfaces are longer than the cutting edge that is formed by the intersection of the two sharpened surfaces.
摘要:
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 (A) is made of austenite stainless steel having a structure that is elongated in fiber form, and has a cutting portion (1) and a body portion (2) with a triangular cross-sectional shape that is continuous with said cutting portion (1). The cutting portion (1) has cutting edges (13), at least one surface of which is formed by a pressed surface (11), and which are formed by the intersection of said pressed surface (11) with two sharpened surfaces (12), and a cutting edge (14) that is formed by the intersection of the two sharpened surfaces (12). The tip (15) where the various cutting edges (13) and (14) converge is positioned in the center of the pressed surface (11). Moreover, the cutting edges (13) formed by the intersection of the above pressed surface (11) with the two sharpened surfaces (12) are longer than the cutting edge (14) that is formed by the intersection of the two sharpened surfaces (12).
摘要:
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. Moreover, the cutting edges formed by the intersection of the above pressed surface with the two sharpened surfaces are longer than the cutting edge that is formed by the intersection of the two sharpened surfaces.
摘要:
There are provided a medical staple realizing smooth feeding when loaded in a magazine and a magazine which can realize stable feeding by using the medical staple. Where the medical staple includes a body portion; and a pair of legs formed at both ends of the body portion, wherein the legs are tilted at an angle in which the legs become closer to each other and either one leg is twisted with respect to a plane including the body portion and the other leg in the out-of-plane direction. The magazine includes a body guiding portion which has a size substantially equal to or slightly smaller than the length of the body portions of the staples and carries and guides the body portions thereon; wherein the plurality of staples are loaded in a state where the legs are tilted to the downstream side in the discharge direction and the body portions to the upstream side in the discharge direction.
摘要:
The problem that a metal wire joined integrally to a hole formed in a proximal end face of a medical suture needle is susceptible to bending damage is reduced.A suture needle A has a blind hole 5 which is formed in a proximal end face 3, inserts the end of a wire 10 thereinto, and joins the wire 10 thereto by caulking, and a counterbore 6 which is formed on the proximal end face 3 side of the blind hole 5 and has a dimension D at least in the proximal end face 3 larger than a dimension d of the blind hole 5 and a depth L smaller than a depth of a caulked portion with respect to the blind hole 5. A suture needle with wire inserts the end of the wire 10 into the blind hole 5 to caulk the outer circumference of the suture needle corresponding to the blind hole 5, thereby integrally joins the wire 10 thereto.
摘要:
A power source circuit for a flash memory includes a positive circuit section for generating a positive voltage source, a source follower transistor for converting the impedance of the first voltage source, a negative circuit section for generating a negative voltage source while maintaining a voltage difference between the output of the source follower transistor and the negative voltage source at a first reference potential. The positive circuit section includes a voltage compensating transistor having a threshold voltage equal to the threshold of the source follower transistor.
摘要:
An economic hydrogenation process is provided which significantly suppresses palladium catalyzer activity loss, for obtaining very high purity 1,4-CHDA through a simple operation. The process includes bringing the solution containing the hydrogenation reaction product of interest into contact with steam. The resultant products may include resins having excellent weather resistance or physical properties or high purity medical drugs. The process for preparing 1,4-cyclohexandicarboxylic acid is characterized by two consecutive steps. The first step includes the hydrogenation of a solution containing terephthalic acid in the presence of a palladium catalyzer in an acid resistant vessel or in a vessel layered with acid resistant material for preparing 1,4-cyclohexandicarboxylic acid. The second step includes contacting the solution containing 1,4-cyclohexandicarboxylic acid obtained in the first step with the steam, and extracting impurities moved to the steam.
摘要:
A process of preparing industrially trans-1,4-cyclohexanedimethanol of high purity by distilling a mixture of cis- and trans-1,4-cyclohexanedimethanol in the presence of alkali, or by heating a mixture of cis- and trans-1,4-cyclohexanedimethanol in the presence of alkali and then distilling the heated mixture, and a process of preparing powdered trans-1,4-cyclohexanedimethanol by pulverizing the distillate obtained above.
摘要:
There is disclosed a current-limiting arcing horn comprising a current-limiting unit and a ring horn. The current-limiting unit is composed of lower and upper electrodes, at least one nonlinear resistor element mounted between the electrodes, and an insulating member made of an insulation. The insulating member encloses the electrodes and the nonlinear resistor element. The insulating member has a certain length which is 1.5 to 3.0 times as long as the length of the nonlinear resistor element. The creepage distance of the surface of the insulating means is 1.5 to 3.0 times as long as the length of the insulating member. The grounding electrode of the current-limiting unit is fixed to the earthside base of an insulator that holds an insulated wire. The ring horn is mounted to the upper electrode. An air gap is formed between the ring horn and the insulated wire to permit a flashover by lightning surge across the gap.
摘要:
[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).