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US 12,390,248 B2Granted
Endoscopic flexible tube, endoscopic medical apparatus, and endoscopic-flexible-tube-base-covering material
AssigneeFUJIFILM Corporation
InventorsKazushi Furukawa, Yoshihiro Nakai
Life of this patent
Estimating the term…
Abstract
An endoscopic flexible tube including a flexible-tube base containing metal as a constituent material, and a cover layer covering an outer periphery of the flexible-tube base, wherein the cover layer includes a polyester having a naphthalene structure and a component having an action of inhibiting a reaction of an active species such as a radical, an endoscopic medical apparatus including the endoscopic flexible tube, and a covering material for the endoscopic flexible-tube base.
Claims7
An endoscopic flexible tube comprising:
- a flexible-tube base containing metal as a constituent material, and a cover layer covering an outer periphery of the flexible-tube base,
- wherein the cover layer includes a component (A) below, a component (B) below, at least one of a component (C) below or a component (D) below, and a polyester having a naphthalene structure,
- in the cover layer, a content of the component (B) below by mass is 0.15 times or more and 1.50 times or less a content of the component (A) below, and
- in the cover layer, a total of contents of the components (C) and (D) below by mass is 0.010 times or more and 0.50 times or less the content of the component (A) below,
- component (A):
- a compound having a structure represented by a general formula (A) below,
- component (B):
- at least one of a compound having a structure represented by a general formula (B-1) below, a compound represented by a general formula (B-2) below, or a compound represented by a general formula (B-3) below,
- component (C):
- at least one of a compound represented by a formula (C-1) below, a compound having a structure represented by a general formula (C-2) below, or a compound having a structure represented by a general formula (C-3) below,
- component (D):
- a filler,
- where R1 to R4 represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or —ORa, Ra represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, * represents a bonding site for being incorporated into the compound,
- in the general formula (B-1), R6 and R7 represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aralkyl group having 7 to 36 carbon atoms, and * represents a bonding site for being incorporated into the compound,
- in the general formula (B-2), R8 and R9 represent a hydrogen atom, an aliphatic group, an acyl group, an aliphatic oxycarbonyl group, an aromatic oxycarbonyl group, an aliphatic sulfonyl group, or an aromatic sulfonyl group, R10 represents an aliphatic group, an aliphatic oxy group, an aromatic oxy group, an aliphatic thio group, an aromatic thio group, an acyloxy group, an aliphatic oxycarbonyloxy group, an aromatic oxycarbonyloxy group, a substituted amino group, a heterocyclic group, or a hydroxy group, R8 and R9, R9 and R10, or R8 and R10 may be linked together to form a five- to seven-membered ring without forming a 2,2,6,6-tetraalkylpiperidine skeleton, with the proviso that R8 and R9 are not simultaneously hydrogen atoms, and R8 and R9 have 7 or more carbon atoms in total,
- in the general formula (B-3), R11 to R14 represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 15 carbon atoms,
- in the general formula (C-2), R15 and R16 represent an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or a halogen atom, and R17 represents an alkyl group or an aryl group, and
- in the general formula (C-3), R18 and R19 represent an alkyl group.
15 more elements
An endoscopic-flexible-tube-base-covering material comprising:
- a component (A) below, a component (B) below, at least one of a component (C) below or a component (D) below, and a polyester having a naphthalene structure,
- wherein, in the material, a content of the component (B) below by mass is 0.15 times or more and 1.50 times or less a content of the component (A) below, and
- in the material, a total of contents of the components (C) and (D) below by mass is 0.010 times or more and 0.50 times or less the content of the component (A) below,
- component (A):
- a compound having a structure represented by a general formula (A) below,
- component (B):
- at least one of a compound having a structure represented by a general formula (B-1) below, a compound represented by a general formula (B-2) below, or a compound represented by a general formula (B-3) below,
- component (C):
- at least one of a compound represented by a formula (C-1) below, a compound having a structure represented by a general formula (C-2) below, or a compound having a structure represented by a general formula (C-3) below,
- component (D):
- a filler,
- where R1 to R4 represent a hydrogen atom or an alkyl group having 1 to 12 carbon atoms, R5 represents a hydrogen atom, an alkyl group having 1 to 18 carbon atoms, or —ORa, Ra represents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and * represents a bonding site for being incorporated into the compound,
- in the general formula (B-1), R6 and R7 represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, or an aralkyl group having 7 to 36 carbon atoms, and * represents a bonding site for being incorporated into the compound,
- in the general formula (B-2), R8 and R9 represent a hydrogen atom, an aliphatic group, an acyl group, an aliphatic oxycarbonyl group, an aromatic oxycarbonyl group, an aliphatic sulfonyl group, or an aromatic sulfonyl group, R10 represents an aliphatic group, an aliphatic oxy group, an aromatic oxy group, an aliphatic thio group, an aromatic thio group, an acyloxy group, an aliphatic oxycarbonyloxy group, an aromatic oxycarbonyloxy group, a substituted amino group, a heterocyclic group, or a hydroxy group, R8 and R9, R9 and R10, or R8 and R10 may be linked together to form a five- to seven-membered ring without forming a 2,2,6,6-tetraalkylpiperidine skeleton, with the proviso that R8 and R9 are not simultaneously hydrogen atoms, and R8 and R9 have 7 or more carbon atoms in total,
- in the general formula (B-3), R11 to R14 represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or an aryl group having 6 to 15 carbon atoms,
- in the general formula (C-2), R15 and R16 represent an alkyl group, an aryl group, an alkoxy group, an aryloxy group, or a halogen atom, and R17 represents an alkyl group or an aryl group, and
- in the general formula (C-3), R18 and R19 represent an alkyl group.
14 more elements
Dependencies are inferred from the claim text.