초록 ▼

An insert for cell cultures has a hollow housing (1) of a cylinder-like shape, with an upper, in particular circular, opening (2) and a membrane-like base located opposite the opening (2). On the peripheral opening edge (6) outward protruding support arms (5) are spaced apart from one another. The h

An insert for cell cultures has a hollow housing (1) of a cylinder-like shape, with an upper, in particular circular, opening (2) and a membrane-like base located opposite the opening (2). On the peripheral opening edge (6) outward protruding support arms (5) are spaced apart from one another. The housing (1) has on its outer peripheral surface (12), between at least two support arms (5), a flattened region (11) extending from the opening edge (6) in the direction of the base (3), so that in a plane perpendicular to the central longitudinal axis (Y) of the housing (1) in the region of the flattened region (11) there is a radial clearance of the peripheral surface (12) relative to the longitudinal axis (Y) which is smaller than the radial clearance and/or outer radius of the peripheral surface (12) in the non-flattened region of the peripheral surface (12).

대표청구항 ▼

1. An insert for cell cultures, comprising: a hollow cylinder-like housing having a central axis and a first axial end and a second axial end and having an upper opening with an opening edge at the first axial end and a membrane-like base near the second axial end;three outward protruding support ar

1. An insert for cell cultures, comprising: a hollow cylinder-like housing having a central axis and a first axial end and a second axial end and having an upper opening with an opening edge at the first axial end and a membrane-like base near the second axial end;three outward protruding support arms spaced apart from one another by 120° and distributed on a peripheral edge surrounding the opening, each of the three support arms having two ribs extending parallel to each other and to the central axis on an underside facing toward the second axial end and configured to facilitate an upward displacement of the insert during pipetting, each of the support arms having a width adjacent the peripheral edge that is equal to an outer clearance of the two ribs located under the support arm;the housing having an outer peripheral surface with three flattened regions in an angular area between respective two of the support arms, the three flattened regions extending from the opening edge toward the base, such that in planes extending through the at least one flattened region and perpendicular to the central axis, the outer peripheral surface defines a circle centered at the central axis, and all points of the three flattened regions lie inside the circle. 2. The insert according to claim 1, further comprising that the housing has an inner peripheral surface and that each of the three flattened regions is formed by a flat wall section of the housing and the inner peripheral surface is flattened by the at least one flattened region. 3. The insert according to claim 1, further comprising that all support arms have an equal radial length. 4. The insert according to claim 1, further comprising that the outer peripheral surface has a greater diameter proximate the first axial end than proximate the second axial end. 5. The insert according to claim 1, further comprising that each of the two ribs is tapered toward the outer peripheral surface and has a side edge extending at an acute angle relative to the outer peripheral surface. 6. The insert according to claim 1, wherein each of the three support arms comprises a radially inner section and a radially outer section, the radially outer section having a smaller width in circumferential direction of the housing than the radially inner section. 7. The insert according to claim 6, wherein the width of the radially inner section of each support arm connects the ribs associated with the support arm and wherein the radially inner section extends radially over a distance that covers the ribs. 8. The insert according to claim 1, wherein the opening edge of the housing has three axial recesses, one of the recesses being arranged between each pair of adjacent support arms of the three support arms. 9. The insert according to claim 1, further comprising that the housing and the base are each designed as injection molded plastic parts and the base is secured in the housing by gluing or welding. 10. The insert according to claim 1, wherein the first and second axial ends have the same diameter. 11. The insert according to claim 1, wherein the first and second axial ends have different diameters. 12. An insert for cell cultures, comprising: a hollow cylinder-like housing having a central axis and a first axial end and a second axial end and having an upper opening with an opening edge at the first axial end and a membrane-like base near the second axial end;three outward protruding support arms spaced apart from one another by 120° and distributed on a peripheral edge surrounding the opening, each of the three support arms having a radially inner section, a radially outer section having a width narrower than the radially inner section, and two ribs facing toward the second axial end and extending parallel to each other and to the central axis on an underside of the support arms, the two ribs configured to facilitate an upward displacement of the insert during pipetting, the ribs having a greater distance from each other than the width of the radially outer section;the housing having an outer peripheral surface with three flattened regions in an angular area between respective two of the support arms, the three flattened regions extending from the opening edge toward the base, such that in planes extending through the at least one flattened region and perpendicular to the central axis, the outer peripheral surface defines a circle centered at the central axis, and all points of the three flattened regions lie inside the circle.