Abstract: An improved transparent bladeless obturator includes a proximal handle, a distal-end portion and a shaft therebetween, the handle and the shaft including a generally-aligned axis aperture, the distal-end portion including a transparent tip, from the distal end to the proximal end, the transparent tip divided into a top-portion, a spear-portion, a transition-portion and a base-portion; the top-portion includes an apex and a rotary-wall extending axially from the apex to the proximal end and gradually increasing in a transverse direction, the rotary-wall limiting a hollow cone; the main-portion including a main-body wall, the rotary-wall and the main-body wall extend to be intersected and form a circular field of vision; the sweeping-wall extends axially from the distal end to the proximal end and gradually increases in a transverse direction; and the spear-portion includes the first transverse-portion and the second transverse-portion.

Abstract: The invention discloses a trocar seal membrane with concave-channel structure. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening, said sealing wall comprising a proximal surface and a distal surface, said distal aperture formed by a scaling-lip for accommodating the inserted instrument and formed a gas-tight seal, said sealing-lip comprising a longitudinal axis and a transverse plane substantially perpendicular to said axis. In the lip-adjacent area, said sealing wall comprises the main rotary-wall and a plurality of concave-channel each of the concave-channels includes two side sealing-walls, which are defined by both edges and extending laterally outward from the sealing-lip and gradually widening. Said concave-channels have the functions of enlarging hoop circumference, reducing the wrapped area, improving lubrication reliability, increasing the axial tensile stiffness, etc.

Abstract: A trocar seal membrane with multi-dimensional pleats. The seal membrane includes a proximal opening, a distal aperture, and a sealing wall from the distal aperture ex-tending to the proximal opening, the sealing wall includes a proximal surface and a distal surface. The distal aperture formed by a sealing lip for accommodating the inserted instrument forms a gas-tight seal. In the lip-adjacent area, the sealing wall simultaneously has a plurality of transverse pleats extending laterally outwardly from the sealing lip and a plurality of tangential pleats uniformly distributed around the sealing lip. The pleated sealing wall can enlarge hoop circumference in the lip-adjacent area, and reduce overall deformation when a large-diameter instrument is inserted, thereby reducing friction and improving sealing reliability.

Abstract: Disclosed is a trocar seal membrane and assembly including normal concave-channels and reverse concave-channels. The seal membrane includes a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening. The distal aperture formed by a sealing lip for accommodating the inserted instrument forms a gas-tight seal. The sealing wall includes a proximal surface and a distal surface. The sealing wall is a seamless sealing body with multiple normal concave-channels and multiple reverse concave-channels surrounding the sealing lip in an alternating manner. The normal concave-channels and reverse concave-channels has the functions of enlarging hoop circumference, reducing the wrapped-area, improving lubrication reliability, increasing the axial tensile stiffness, etc., thereby, the frictional resistance and the stick-slip can be greatly reduced.

Abstract: Disclosed is a seal membrane and assembly including the concave-channel. The seal membrane includes a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening. The sealing wall includes a proximal surface and a distal surface. The distal aperture is formed by a sealing lip for accommodating the inserted instrument and forming a gas-tight seal. The sealing wall includes a main rotary-wall and multiple concave-channels.

Abstract: This application discloses a cannula comprising the movable and inflatable balloon, which includes the first seal assembly and the second seal assembly, which comprises the lower outer casing and the hollow sleeve connected thereto and extending to the distal end. The first seal assembly, the second seal assembly and the hollow sleeve include the instrument access that is communicated and substantially aligned, the hollow sleeve including the inner cylinder surface, the outer cylinder surface and the sleeve-wall therebetween; the distal end of the hollow sleeve further includes the open sleeve lip; the cannula further includes the inflatable balloon assembly, the one-way valve assembly for inflation and deflation, and the gas access connecting the balloon assembly and the one-way valve assembly; the balloon assembly includes the balloon lip and the balloon body coupled thereto.

Abstract: This application discloses a cannula comprising balloon for the direct puncture technique, which includes the first and the second seal assembly, which includes the lower outer casing and the hollow sleeve connected thereto and extending to the distal end. The first seal assembly, the second seal assembly and the hollow sleeve include an instrument access that is communicated and substantially aligned; the hollow sleeve including an inner cylinder surface, an outer cylinder surface and a sleeve-wall therebetween; the distal end of the hollow sleeve further includes an open sleeve lip including a slanted cylinder surface between the opening lip and the transitional lip, the inner and the slanted cylinder surface limiting the sleeve slanted-wall; the balloon assembly includes a balloon axis, a balloon lip and a balloon body coupled thereto, the balloon lip extending distally to form the balloon slanted-wall that matches the shape and size of the sleeve slanted-wall.

Abstract: The application discloses a dual-mode bladeless obturator and trocar with two halves. The bladeless obturator comprises a proximal handle and a distal-end portion and a shaft therebetween, the shaft including a central axis, said distal-end portion including a stationary-half and a movable-half; the stationary-half extends from the distal end to the proximal end and is fastened to the shaft or handle, and the movable-half is movable relative to the stationary-half along the central axis direction; the stationary-half comprises a stationary base and a stationary distal-end connected thereto; the movable-half comprises a movable base and a movable distal-end connected thereto and extending to the movable slant distal-end; the stationary-half includes a sharp separating-edge and/or a sharp top-end, the movable-half includes a blunt separating-edge and a blunt top-end.

Abstract: The application discloses an improved transparent bladeless obturator comprising a proximal handle, a distal-end portion and a shaft therebetween, the handle and the shaft including a generally-aligned axis aperture, the distal-end portion including a transparent tip, from the distal end to the proximal end, said transparent tip divided into a top-portion, a spear-portion, a transition-portion and a base-portion; the top-portion includes an apex and a rotary-wall extending axially from the apex to the proximal end and gradually increasing in a transverse direction, the rotary-wall limiting a hollow cone; the main-portion including a main-body wall, the rotary-wall and the main-body wall extend to be intersected and form a circular field of vision; the sweeping-wall extends axially from the distal end to the proximal end and gradually increases in a transverse direction; and the spear-portion includes the first transverse-portion and the second transverse-portion.

Abstract: The application relates to a trocar with dual-protection shield comprises an obturator and a cannula, said cannula including a hollow sleeve, which includes a sleeve distal-end and a sleeve-lip, said obturator including a handle, the distal-end portion, and a shaft therebetween. When the trocar is in operation, the obturator penetrates through the cannula into the body wall to establish a penetration channel. The shaft includes a fastened shaft and a movable shaft; the fastened protection shield comprises a base of the fastened shield and a slant distal-end of the fastened shield connected thereto, the slant distal-end including a distal shaft-aperture, which penetrates the slant distal-end to form a fastened-shield-lip; the fastened protection shield is connected with the fastened shaft, the working-blade extending toward the proximal end and connected with a fastened shaft or handle, the working-blade extending toward the distal end beyond the fastened-shield-lip.

Abstract: The invention discloses a seal membrane and assembly comprising concave-channel, said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening, said sealing wall comprising a proximal surface and a distal surface; said distal aperture formed by a sealing lip for accommodating the inserted instrument forms a gas-tight seal; said sealing wall comprises the main rotary-wall and a plurality of concave-channels.

Abstract: The invention discloses a trocar seal membrane and assembly comprising normal concave-channels and reverse concave-channels. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening, said distal aperture formed by a sealing lip for accommodating the inserted instrument forms a gas-tight seal, said sealing wall comprising a proximal surface and a distal surface. Said sealing wall is a seamless sealing body with a plurality of normal concave-channels and a plurality of reverse concave-channels surrounding the sealing lip in an alternating manner. The normal concave-channels and reverse concave-channels has the functions of enlarging hoop circumference, reducing the wrapped-area, improving lubrication reliability, increasing the axial tensile stiffness, etc., thereby, the frictional resistance and the stick-slip can be greatly reduced.

Abstract: The invention discloses a trocar seal membrane with multi-dimensional pleats. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall from the distal aperture ex-tending to the proximal opening, said sealing wall comprising a proximal surface and a distal surface. Said distal aperture formed by a sealing lip for accommodating the inserted instrument forms a gas-tight seal. In the lip-adjacent area, the sealing wall simultaneously has a plurality of transverse pleats extending laterally outwardly from the sealing lip and a plurality of tangential pleats uniformly distributed around the sealing lip. The pleated sealing wall can enlarge hoop circumference in the lip-adjacent area, and reduce overall deformation when a large-diameter instrument is inserted, thereby reducing friction and improving sealing reliability.

Abstract: The invention discloses a trocar seal membrane with multi-dimensional floating pleats. Said seal membrane comprises a proximal opening, a distal aperture, an outer seal body extending from the proximal opening to the distal aperture, and an inner seal body extending from the distal aperture to the proximal opening. Said outer seal body and said inner seal body extend to be intersected and form a flange; said distal aperture formed by a sealing lip for accommodating the inserted instrument and forming a gas-tight seal; said outer seal body includes at least one radial pleat; each radial pleat includes at least two annular-pleat-walls and at least one of the annular-pleat-walls include a plurality of tangential pleats. In the invention, under the essentially equivalent condition of geometric size, the deformation force of said multi-dimensional pleats is much smaller than the deformation force of said two-dimensional pleats.

Abstract: The invention discloses a trocar seal membrane with concave-channel structure. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall from the distal aperture extending to the proximal opening, said sealing wall comprising a proximal surface and a distal surface, said distal aperture formed by a scaling-lip for accommodating the inserted instrument and formed a gas-tight seal, said sealing-lip comprising a longitudinal axis and a transverse plane substantially perpendicular to said axis. In the lip-adjacent area, said sealing wall comprises the main rotary-wall and a plurality of concave-channel each of the concave-channels includes two side sealing-walls, which are defined by both edges and extending laterally outward from the sealing-lip and gradually widening. Said concave-channels have the functions of enlarging hoop circumference, reducing the wrapped area, improving lubrication reliability, increasing the axial tensile stiffness, etc.

Abstract: The invention discloses an improved pleated trocar seal membrane. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall which extends from the distal aperture to the proximal opening, said distal aperture formed by a sealing lip for accommodating the inserted instrument and forming a gas-tight seal. Said sealing lip comprises a longitudinal axis and a transverse plane substantially perpendicular to said axis. Said sealing wall comprises a plurality of pleats extending laterally from the sealing lip. Each said pleat comprises a pleat peak, a pleat valley and a pleat wall extending there between. And the lip-adjacent area, the depth of the pleat wall gradually increases along the longitudinal axis; while outside the lip-adjacent area, the depth of which gradually decreases along the longitudinal axis.

Abstract: The invention discloses a trocar seal membrane with reverse Concave-channels. Said seal membrane comprises a proximal opening proximal opening, a distal aperture, and a sealing wall extending from the distal aperture to the proximal opening, said distal aperture formed by a sealing lip for accommodating the inserted instrument and forming a seal housing; said sealing lip comprises a longitudinal axis and a transverse plane substantially perpendicular to said longitudinal axis. Said sealing wall in the lip-adjacent area comprises the main rotary-wall and a plurality of reverse Concave-channels, which are recessed from the distal surface of the main rotary-wall toward the proximal surface and the reverse Concave-channel opening pointing to the direction of the distal surface. The shape of the reverse Concave-channel from the perspective of proximal surface is represented as a hollow convex-rib that is raised from the proximal surface.

Abstract: The invention discloses a seal membrane with a trocar sealing System capable of integral inversion. Said seal membrane comprises a proximal opening, a distal aperture, and a sealing wall which extends from the distal aperture to the proximal opening, said the sealing wall comprising a proximal surface and a distal surface, said distal aperture formed by a sealing lip for accommodating the inserted instrument and forming a gas-tight seal; said sealing wall, in the lip-adjacent area, is a seamless sealing body with a plurality of normal concave-channel and a plurality of reverse concave-channel surrounding the sealing lip in an alternating manner; said said normal concave-channel is recessed from the proximal surface of the sealing wall toward the distal surface and the opening oriented to the proximal surface.

Abstract: The invention discloses a trocar seal protector assembly comprising improved pleats. Said protector assembly comprises a proximal opening, a distal end and central axis. Said distal end comprises a plurality of pleats, each of which including a pleat-ridge, a pleat-valley and a pleat-wall extending from the pleat-ridge to the pleat-valley. The plurality of pleats are arranged in a dish shape around the central axis and define a distal aperture, the boundary of the distal aperture being formed by a wavy annular circuit, which is completely on a cylindrical surface or completely on a frustum surface. Taking the central axis as the center, make arbitrary cylindrical surface and all pleats in the adjacent area of the distal aperture to be intersected. intersection line of which is a complete wavy annular line. The proximal opening of the protector assembly further includes a boss and a cylindrical wall extending from the proximal end to the distal end.