5R MED TECHNOLOGY (CHENGDU) CO., LTD; LTD;5R MED TECHNOLOGY (CHENGDU) CO.;成都五义医疗科技有限公司
发明人:
ZHU, Moshu,朱莫恕
申请号：
CNCN2017/093601
公开号：
WO2018/024102A1
申请日:
2017.07.20
申请国别(地区):
CN
年份:
2018
代理人:
摘要：
An improved pleated sealing film (330, 430) of a trocar is provided. The sealing film (330, 430) comprises a proximal end opening (332, 432), a distal end hole (333, 433), and a sealing wall (335, 435) extending from the distal end hole (333, 433) to the proximal end opening (332, 432). The distal end hole (333, 433) is formed by a sealing lip (334, 434), and is configured to accommodate an inserted instrument so as to form airtight sealing. The sealing lip (334, 434) has a central axis (358, 458) and a transverse plane (359, 459) which is substantially perpendicular to the central axis (358, 458). The sealing wall (335, 435) comprises a plurality of pleats (340, 440) extending outwardly from the sealing lip (334, 434) in a transverse direction. Each of the pleats (340, 440) has a pleat peak (343a, 343b, 443a, 443b), a pleat valley (342a, 342b, 442a, 442b), and a pleat wall (341, 441) extending between the pleat peak (343a, 343b, 443a, 443b) and the pleat valley (342a, 342b, 442a, 442b). In a region adjacent to the sealing lip (334, 434), the depth of the pleat wall (341, 441) gradually increases along the direction of the axis (358, 458)； while outside the region adjacent to the sealing lip (334, 434), the depth of the sealing wall (335, 435) gradually decreases along the direction of the axis (358, 458). Due to the pleats (340, 440), the circumferential perimeter increases, and the circumferential strain (stress) reduces when an instrument having a large diameter is applied, thereby reducing the circumferential tightening force and the frictional resistance.L'invention porte sur un film d'étanchéité plissé amélioré (330, 430) d'un trocart. Le film d'étanchéité (330, 430) comprend une ouverture à l'extrémité proximale (332, 432), un trou à l'extrémité distale (333, 433), et une paroi d'étanchéité (335, 435) s'étendant du trou de l'extrémité distale (333, 433) à l'ouverture de l'extrémité proximale (332, 432). Le trou de l'extrémité distale (333, 433) est formé par
