公开(公告)号：US20210147657A1

公开(公告)日：2021-05-20

申请号：US16951305

申请日：2020-11-18

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Yuichiro MATSUTANI ,  Keishi YAMAMOTO ,  Toshishige INOUE

IPC: C08L15/02 ,  A61M5/32 ,  A61M5/315 ,  A61B5/15

Abstract: An object of the present invention is to provide a medical rubber composition having excellent gas permeation resistance. The present invention provides a medical rubber composition containing (a) a base polymer containing a halogenated butyl rubber, and (b) a liquid polymer.

公开(公告)号：US20240189463A1

公开(公告)日：2024-06-13

申请号：US18382182

申请日：2023-10-20

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Yogun KIDA ,  Kei TAJIMA ,  Kazuki NOJIRI ,  Yuichiro MATSUTANI ,  Shumpei MORITA

IPC: A61L2/08

CPC classification number: A61L2/081 ,  A61L2202/23

Abstract: A sterilization method for a medical rubber part is a sterilization method for a medical rubber part that can include a body made from an elastic material and that can include an inactive resin film stacked on at least a portion of a surface of the body, where the sterilization method can include irradiating a packaging article with gamma ray, the packaging article accommodating a plurality of the medical rubber parts and having an oxygen concentration not higher than 5%.

公开(公告)号：US20230192996A1

公开(公告)日：2023-06-22

申请号：US18085605

申请日：2022-12-21

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Yogun KIDA ,  Kei TAJIMA ,  Kazuki NOJIRI ,  Yuichiro MATSUTANI ,  Toshiki ONISHI ,  Toshikazu KONDO

IPC: C08L9/00 ,  C08K13/02 ,  A61L2/08

CPC classification number: C08L9/00 ,  C08K13/02 ,  A61L2/081 ,  C08L2312/00 ,  C08L2205/03 ,  C08L2205/025 ,  C08L2207/062 ,  C08L2207/066 ,  C08K5/3492

Abstract: A medical rubber part in which non-elution characteristics are maintained even after sterilization with gamma ray, a packaging article for the medical rubber part, and a medical rubber composition for manufacturing the medical rubber part can be provided or implemented. The medical rubber composition can contain or comprise: a (a) base polymer containing a halogenated isobutylene-isoprene rubber; a (b) polyethylene; and a (c) triazine derivative as a crosslinking agent. A proportion of the triazine derivative contained per 100% by mole of a halogen of the halogenated isobutylene-isoprene rubber contained in the (a) base polymer can be 1% by mole to 15% by mole.

公开(公告)号：US20230190970A1

公开(公告)日：2023-06-22

申请号：US18085606

申请日：2022-12-21

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Yogun KIDA ,  Kei TAJIMA ,  Kazuki NOJIRI ,  Yuichiro MATSUTANI ,  Toshiki ONISHI ,  Toshikazu KONDO

IPC: A61L2/08

CPC classification number: A61L2/081 ,  A61L2202/24

Abstract: A sterilization method for a medical rubber part in which non-elution characteristics can be maintained even after sterilization with gamma ray. The sterilization method for a medical rubber part can include irradiating, with gamma ray, a packaging article for a medical rubber part made from an elastomer that contains a polyethylene, the packaging article accommodating a plurality of the medical rubber parts.

公开(公告)号：US20160101239A1

公开(公告)日：2016-04-14

申请号：US14879721

申请日：2015-10-09

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Naoyuki ISHIDA ,  Hiroaki NAKANO ,  Yuichiro MATSUTANI ,  Hiroyuki KANEKO

IPC: A61M5/315

CPC classification number: A61M5/31513 ,  A61M5/31515 ,  A61M2205/0222 ,  A61M2205/0238 ,  A61M2205/19 ,  B29C43/021 ,  B29C43/184

Abstract: A gasket (10) for a prefilled syringe is provided, which has a generally cylindrical outer shape, and includes a liquid contact portion (13) provided on one of opposite end faces, a thread hole (15) provided in the other end face for attachment of a plunger, and at least two annular projections (17A, 17B) provided on a peripheral surface (16) and spaced from each other by an annular trough (18) in a gasket height direction (gasket axial direction) extending from the one end face to the other end face, wherein a diameter difference (A) (=a1−a2) between a diameter (a1) of the annular projections (17A, 17B) and a diameter (a2) of the annular trough and a diameter difference (B) (=b1−b2) between a thread root diameter (b1) and a thread ridge diameter (b2) of an internal thread portion of the thread hole satisfy a ratio relationship of A:B=1:(2 to 4).

Abstract translation: 提供了一种用于预充式注射器的垫圈（10），其具有大致圆柱形的外形，并且包括设置在一个相对端面上的液体接触部分（13），设置在另一端面中的螺纹孔（15） 柱塞的连接以及设置在圆周表面（16）上并且由垫圈高度方向（垫片轴向）延伸的环形槽（18）彼此隔开的至少两个环形突起（17A，17B） 其特征在于，所述环状突起（17A，17B）的直径（a1）与所述环状槽的直径（a2）之间的直径差（A）（= a1-a2） 螺纹孔的内螺纹部的螺纹根直径（b1）和螺纹螺纹直径（b2）之间的比（B）（= b1-b2）满足A:B = 1：（2〜4）的比例关系， 。

公开(公告)号：US20150367076A1

公开(公告)日：2015-12-24

申请号：US14729921

申请日：2015-06-03

Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.

Inventor： Yuichiro MATSUTANI ,  Naoyuki ISHIDA ,  Eiji YAO

IPC: A61M5/315

CPC classification number: A61M5/31513 ,  A61M2205/0222 ,  A61M2205/0238 ,  F16J15/00

Abstract: A gasket having a novel structure ensuring both the gas tightness and the low-friction slidability is provided. A sliding portion of the gasket (13) includes at least a first annular projection (17A), an annular recess and a second annular projection (17B) arranged in this order in a direction rearward from a distal portion of the gasket serving as a liquid contact portion. The first projection (17A) is designed so that a first peak appears adjacent the distal portion of the gasket when the gasket is fitted in the syringe barrel (11) and a product α of a contact pressure P1f and a width D1f of the first peak is 0.4≦α≦1.0 as determined by an FEM analysis.

Abstract translation: 提供了具有确保气密性和低摩擦滑动性的新型结构的垫圈。 垫圈（13）的滑动部分至少包括第一环形突起（17A），环形凹部和第二环形突起（17B），该第二环形突起（17B）沿着用作液体的垫圈的远端部分的后方向 接触部分。 第一突起（17A）被设计成使得当垫圈装配在注射器筒（11）中时，第一峰出现在垫片的远端部分附近，并且接触压力P1f和第一峰值的宽度D1f的乘积α 通过FEM分析确定为0.4＆nlE;α＆nlE; 1.0。

公开(公告)号：US20240352220A1

公开(公告)日：2024-10-24

申请号：US18633901

申请日：2024-04-12

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Shumpei MORITA ,  Yuichiro MATSUTANI

IPC: C08K3/22 ,  A61B5/15 ,  A61J1/14 ,  A61M5/315 ,  C08K3/04 ,  C08K3/30 ,  C08K3/34

CPC classification number: C08K3/22 ,  A61B5/150351 ,  A61J1/1412 ,  A61J1/1468 ,  A61M5/31501 ,  C08K3/04 ,  C08K3/30 ,  C08K3/34 ,  A61M2005/31508 ,  C08K2003/222 ,  C08K2003/2237 ,  C08K2201/003 ,  C08K2201/006 ,  C08K2201/014

Abstract: A medical rubber composition can include: a base polymer containing halogenated isobutylene-isoprene-rubber; and an acid acceptor, and a content of the acid acceptor can be 1 part by mass to 3 parts by mass with respect to 100 parts by mass of the base polymer, and a BET specific surface area of the acid acceptor can be 150 m2/g to 200 m2/g.

公开(公告)号：US20210301116A1

公开(公告)日：2021-09-30

申请号：US17217459

申请日：2021-03-30

Applicant: Sumitomo Rubber Industries, Ltd.

Inventor： Yuichiro MATSUTANI

IPC: C08L23/22 ,  C08K5/14 ,  C08L15/02 ,  C08K5/11 ,  A61M5/31

Abstract: An object of the present invention is to provide a medical rubber composition having excellent non-elution characteristic and gas permeability. The present invention provides a medical rubber composition containing: (a) a butyl rubber, (b) a diene-based rubber containing polybutadiene, (c) a peroxide-based crosslinking agent, and (d) a co-crosslinking agent, wherein an amount of (b) the diene-based rubber in 100 parts by mass of the rubber component composed of (a) the butyl rubber and (b) the diene-based rubber is 15 parts by mass or more and 90 parts by mass or less, and a mass ratio ((d)/(c)) of (d) the co-crosslinking agent to (c) the peroxide-based crosslinking agent is 1.2 or more and 25 or less.