Surgical drape with a fluid collection bag for determining fluid volume and method of using a surgical drape with a fluid collection bag

Abstract

The invention relates to a surgical drape (10) with a fluid collection bag (30) with a measurement marking (24) and with a volume positioning aid (50) comprising positioning elements (52, 54) which, in a laid-flat first configuration (36) of the fluid collection bag, are oriented in a first arrangement (56) by the manufacturer. The intermediate state, brought about by the user and due to fluid, during the configuration and arrangement can be brought into a third configuration (38) of the fluid collection bag, in which the positioning elements (42, 44) are oriented in a second arrangement (58) corresponding to the first arrangement, and the volume of the fluid can be determined by means of the measurement marking. The invention also relates to a method for using the surgical drape.

Description

[0001] Ref. 93230817-WO-PCT - September 10, 2025

[0002] Title: Surgical drape with a fluid collection bag for determining fluid volume and method for using a surgical drape with a fluid collection bag

[0003] Description

[0004] The present invention relates to a surgical drape with a fluid collection bag for determining the volume of fluid collected in the fluid collection bag.

[0005] Liquid collection bags made of a flexible material and with a volume measuring device arranged on a bag wall, comprising a volume measuring zone with a measuring mark, and the application of the liquid collection bag as a component on a surgical drape are known.

[0006] In surgical applications, determining the volume of fluids can be essential in order to derive appropriate treatment measures.

[0007] For example, surgical drapes with fluid collection bags are often used as patient underpads during childbirth. The underpad is positioned under the patient's buttocks with the fluid collection bag in place to monitor blood loss during delivery or postpartum care and to initiate initial measures to stop the bleeding if the volume of blood loss is deemed critical.

[0008] It has been observed that, in the application of surgical drapes with fluid collection bags made of flexible material, the fluid in the collection bag leads to a three-dimensional deformation of the bag, causing tilting and / or displacement of the bag walls. Consequently, the volume of the fluid cannot be accurately determined at the measuring mark attached to one of the bag walls by the manufacturer. The present invention aims to provide a surgical drape with an attached or attachable fluid collection bag, in which, during the application of the surgical drape while the fluid collection bag is still attached, the volume of fluid in the collection bag can be determined as accurately and precisely as possible.This means that the volume should be determinable without removing the liquid collection bag from the base cloth element, i.e., while it is still attached to the base cloth element during use. A user-friendly method for accurately determining liquid volume in flexible liquid collection bags should be provided. Furthermore, a cost-effective and / or easily implementable solution should be offered.

[0009] The problem is solved by means of a surgical cloth according to claim 1. Furthermore, a method for using a surgical cloth according to a dependent claim is proposed.

[0010] The problem is solved by a surgical drape comprising a base drape element with a top and a bottom, having at least one fluid collection bag fixed or definable on the top of the base drape element, the fluid collection bag having a longitudinal direction, a transverse direction and a bag opening, wherein the fluid collection bag has volume measuring means, wherein the fluid collection bag comprises or is formed from flexible material and, in a flat, spread-out first configuration, has a first bag wall facing the top and a second bag wall lying flat on the first bag wall, and wherein the first configuration of the fluid collection bag can be brought into a second configuration of the fluid collection bag by the user.wherein in the second configuration of the liquid collection bag the second bag wall is spaced at least partially in a Z-direction from the first bag wall such that fluid can enter the liquid collection bag through the bag opening and be collected by gravity, wherein the Z-direction extends perpendicular to the longitudinal direction and to the transverse direction, wherein the volume measuring means comprises a volume measuring zone arranged on a bag wall, preferably on the second bag wall, and the volume measuring zone has a measuring mark, characterized in that the surgical drape has a volume measuring positioning aid,

[0011] - wherein the volume measurement positioning aid comprises positioning elements, and wherein the positioning elements are aligned by the manufacturer in a first arrangement in the first configuration of the liquid collection bag when it is just spread out and laid flat,

[0012] - wherein the positioning elements in the second configuration are moved from the first arrangement to an arrangement that differs from the first arrangement,

[0013] - wherein the user can bring the second configuration of the liquid collection bag into a third configuration of the liquid collection bag, and wherein in the third configuration the positioning elements are aligned in a second arrangement, wherein the second arrangement corresponds to the first arrangement, and wherein in the third configuration the volume of the liquid collected in the liquid collection bag can be determined by means of the measuring mark.

[0014] The invention has revealed that, in the application situation of a surgical drape with a liquid collection bag made of flexible material, the bag walls of the liquid collection bag must be positioned in a defined manner to determine the volume of the liquid collected in the liquid collection bag, so that the volume measuring zone arranged on the bag wall with a measuring mark is suitable for correctly determining the volume.

[0015] It was further recognized that the volume measurement positioning aid according to the invention enables the user to achieve this defined positioning of the bag walls by moving the liquid collection bag into the third configuration of the liquid collection bag.

[0016] Preferably, the positioning elements are arranged in the area of ​​the bag opening. "In the area of ​​the bag opening" means at most 50 mm away from the bag opening. According to a further preferred embodiment, at least one first positioning element is arranged on the first bag wall and a second positioning element is arranged on the second bag wall.

[0017] According to a further preferred embodiment, a first positioning element is arranged on the base cloth element and a second positioning element is arranged on the second bag wall.

[0018] The liquid collection bag is set up by the manufacturer, in particular calibrated, so that the volume of the collected liquid can be read and determined in the third configuration using the measuring mark.

[0019] The invention thus enables a correct determination of the liquid volume in a liquid collection bag made of flexible material, which is attached to a surgical drape.

[0020] The bag opening preferably extends transversely across the liquid collection bag. A free edge of the first and / or second bag wall, circumscribing the bag opening, can be linear in the transverse direction of the liquid collection bag. Alternatively, the free edge of the first and / or second bag wall can have a non-linear, but still transverse, shape.

[0021] The first and second bag walls define the opening of the liquid collection bag.

[0022] The bag opening can be designed such that, in the top view of the liquid collection bag in its spread-out, flattened first configuration, the second bag wall has a free edge that is essentially congruent with a free edge of the first bag wall.

[0023] In an alternative embodiment, the bag walls defining the bag opening can differ in dimension. Thus, in a top view of the liquid collection bag in the first configuration, the first bag wall can have a first section that corresponds to the second bag wall in terms of area, and a second section adjacent to the first section. This means that the free edge of the second bag wall is not congruent with the free edge of the first bag wall. The second section of the first bag wall can be formed integrally from the material of the first section, or alternatively, it can be attached to the first section as a separate section.

[0024] In the context of surgical draping, the term "top side" refers to the side of the base drape element facing the user when viewed from above. Depending on the function and application of the surgical drape, the "top side" can be the side facing away from a support surface (such as an operating table), or, in relation to the patient, the side of the base drape element facing away from the patient if the surgical drape is placed over the patient, or the side facing the patient in the case of a patient drape.

[0025] The term "underside" refers to the side of the base drape element facing away from the user when viewed from above. Depending on the surgical drape's function, the "underside" may be the side facing a support surface, or, in the case of a surgical drape covering a patient, the side facing the patient, or, in the case of patient-supporting drapes, the side facing away from the patient.

[0026] “Facing the top” therefore means orientation towards the top of the base cloth element.

[0027] The term "first bag wall facing the top of the base cloth element" thus defines, in the case of a liquid collection bag in the first configuration laid flat and spread out, the bag wall of the two bag walls closest to the base cloth element.

[0028] In a preferred variant, the liquid collection bag, in its first, flattened configuration, does not extend beyond the edges of the base cloth element. In an alternative variant, it is conceivable that the liquid collection bag, in its first, flattened configuration, extends at least partially beyond the edges of the base cloth element.

[0029] Alternatively, it may also be provided that the liquid collection bag is fixed or definable at an edge of the base cloth element, such that in a top view of the liquid collection bag in the first configuration laid flat, the bag opening of the liquid collection bag extends along the edge, i.e. the bag opening is located directly on the edge of the base cloth element or the bag opening is even located outside the edge of the base cloth element.

[0030] In cases where reference is made to the location of components of the surgical drape as a distance or length, or to dimensions as a length or extent, the distance or length refers to the fully deployed configuration of the surgical drape and the corresponding component, such as the fluid collection bag or the base drape element. Unless otherwise defined in a specific case, the "distance" or "extension" refers to the shortest distance between the referenced components or features in a defined direction.

[0031] Preferably, the volume positioning aid consists of exactly two positioning elements. This advantageously provides a cost-effective embodiment. Furthermore, the design with only two positioning elements can advantageously encourage the user to move the liquid collection bag, since the user's attention only needs to be focused on two corresponding positioning elements.

[0032] Alternatively, the volume positioning aid is not limited to exactly two positioning elements.

[0033] The volume measurement positioning aid may preferably have a plurality of positioning elements.

[0034] The term "plural" therefore refers to a number of at least three, preferably at most eight, more preferably at most six, more preferably at most four, and more preferably three positioning elements.

[0035] In particular, it is provided that at least one, preferably all, of the positioning elements are symmetrically aligned with respect to a longitudinal axis, especially a longitudinal center axis of the liquid collection bag. This advantageously draws the user's attention to the positioning elements. "Arranged on the longitudinal center axis" means that a positioning element is visually recognizable as being located near the longitudinal center axis of the liquid collection bag, which includes a distance of the positioning element from the longitudinal center axis of up to a maximum of 20% of its maximum transverse extent. In particular, the positioning element is arranged such that its maximum transverse extent extends close to the longitudinal center axis of the liquid collection bag; preferably, the positioning element overlaps the longitudinal center axis.Preferably, the positioning element is arranged essentially centrally with respect to its maximum transverse extent, in particular symmetrically to the longitudinal center axis.

[0036] A longitudinal axis of the liquid collection bag is understood as any axis that extends in the longitudinal direction of the liquid collection bag. In the first, flattened configuration, the longitudinal direction of the liquid collection bag extends perpendicularly to the transversely oriented opening of the liquid collection bag.

[0037] A longitudinal center axis of the liquid collection bag, as a special design of the longitudinal axis, runs in the longitudinal direction and bisects the maximum extent of the liquid collection bag in the transverse direction.

[0038] A transverse axis of the liquid collection bag is understood to be any axis that extends in the transverse direction of the liquid collection bag and perpendicular to the longitudinal axis of the liquid collection bag.

[0039] A longitudinal axis of the positioning elements refers to any axis extending in the longitudinal direction of the liquid collection bag. The longitudinal center axis of a positioning element bisects the maximum extent of the positioning element in the transverse direction of the liquid collection bag. A transverse axis of the positioning elements refers to an axis extending in the transverse direction of the liquid collection bag. A transverse center axis of the positioning elements bisects the maximum extent of the positioning element in the longitudinal direction of the liquid collection bag.

[0040] Furthermore, preferably at least one, preferably all, of the positioning elements is aligned centrally on a longitudinal axis, preferably on the longitudinal center axis of the liquid collection bag in the transverse direction, i.e., a respective longitudinal center axis of at least one, preferably all, of the positioning elements is congruent with the longitudinal axis, preferably the longitudinal center axis, of the liquid collection bag.

[0041] In an alternative embodiment, at least two, preferably all, of the positioning elements can be arranged on a transverse axis of the liquid collection bag. The positioning elements are aligned consecutively in the transverse direction. The positioning elements can be arranged on both sides of the longitudinal center axis of the liquid collection bag and spaced apart from it, in particular in a mirror-symmetrical arrangement with respect to the longitudinal center axis of the liquid collection bag. This arrangement around the longitudinal center axis of the liquid collection bag advantageously directs the user's attention. In an advantageous further development of this inventive concept, this transverse axis runs along the bag opening, i.e., the transverse axis is tangent to at least one free edge of one of the bag walls.

[0042] Preferably, the positioning elements are largely fixed, meaning they are not removable and cannot be disassembled.

[0043] In a preferred embodiment, at least one, preferably all, of the positioning elements can comprise or be formed from a flat material, wherein the flat material is selected from the group consisting of polymeric material, in particular a film, paper material, in particular coated paper material, nonwoven material, nonwoven film laminate, and / or at least one, preferably all, of the positioning elements can comprise or be formed from a print, a coating or a coloring.

[0044] The use of a polymeric material, especially a film, gives the positioning elements flexibility and durability, allowing them to adapt flexibly to the contours of the liquid collection bag or to the areas adjacent to the bag opening during application.

[0045] Alternatively, the positioning elements can also be made of paper material, in particular a coated paper material, so that the paper material is more resistant to liquid.

[0046] The use of a nonwoven material offers not only flexibility but also resistance to mechanical forces, ensuring that the positioning elements remain intact throughout the entire application. In another embodiment, the positioning elements can be made from a nonwoven-film laminate. This material combination offers the advantages of both nonwovens and films, providing a balanced ratio of comfort, flexibility, and durability.

[0047] In a further preferred embodiment, the flat material also comprises a print, a coating, or a coloring. The print, coating, or coloring can be applied to the flat material or formed from the flat material.

[0048] In an alternative preferred embodiment, at least one, preferably all, of the positioning elements can be formed from a print, a coating or a coloring.

[0049] The terms "printing," "coating," or "coloring" here refer to any additive applied to the surface of a flat material, such as a nonwoven fabric or film, that results in a visual, and possibly also a haptic and / or technical, modification of the flat material. The flat material can be an integral component of the base fabric element or the bag walls, or it can be attached as a separate component. The printing, coating, or coloring can be applied as a raised, tactilely perceptible coating of a certain thickness on one side, or it can be applied additionally or exclusively as a coating that penetrates the flat material.

[0050] In a preferred embodiment, at least one, preferably all, of the positioning elements has a marking zone.

[0051] A marking zone is understood to be a zone which, due to its visually perceptible nature, is visually recognizable and thus visually distinguishable, in particular visually distinguishable from an area adjacent to the marking zone.

[0052] In the context of the present invention, “visually recognizable” means “recognizable with the naked human eye”.

[0053] Within the context of the present invention, the terms "color" or "colored" refer to the visual perceptual property of light output derived from the light spectrum and perceptible to humans via the eye. Colors are typically known as, among others, black, red, blue, green, yellow, and mixtures thereof.

[0054] Color can be measured using the CIEL*a*b* color space, standardized in DIN EN ISO 11664-4: 2012-06 Part 4. The CIEL*a*b* color space is essentially based on representing a color within a coordinate system with three axes. The L* axis represents the lightness between 0 (black) and 100 (white); the a* axis represents the green or red component, with negative values ​​for green and positive values ​​for red; and the b* axis represents the blue or yellow component, with negative values ​​for blue and positive values ​​for yellow.

[0055] At least one, preferably all, of the marking zones can be formed by one or more means selected from the group of graphics, characters, numbers, patterns, lines, symbols or area-extending colored zones.

[0056] A colored zone or graphics, characters, numbers, patterns, symbols, lines (hereinafter collectively referred to as "color area") can be formed or applied in various ways. For example, the color area could be created by a coating or a print and / or by other means.

[0057] Known methods for obtaining a color range include, for example, direct coating using high-pressure printing, gravure printing, planographic printing, rotary printing, or non-contact coating such as spraying. Color ranges can also be created through coloring processes such as pigment printing, spray printing, or stencil printing.

[0058] Materials or components that form a color area can be, for example, an adhesive, especially hot melt, a printing ink as a paste, or an ink.

[0059] It is preferred that the respective color area is designed as a single-color print.

[0060] In an alternative embodiment, at least one, preferably all, positioning elements can include tactile indicators that can be easily felt or identified by the user without the need for visual confirmation. This tactile feedback can be particularly useful in dimly lit or heavily used surgical environments where visual cues may be less reliable.

[0061] Preferably, at least one, preferably all, marking zones are designed as information-conveying markings.

[0062] In an exemplary embodiment, the marking zones can be complementary to each other, i.e., in the sense of different, but complementary markings.

[0063] The marking zones can have different dimensions in the transverse and / or longitudinal direction. They can also differ in shape, size, color, or contour.

[0064] In a particularly preferred embodiment, the marking zones are identical with respect to shape, size, color, or contour. In such a case, the marking zones are particularly mirror-symmetrical to each other, for example in the form of opposing or "pointing" directional arrows.

[0065] In a preferred embodiment, the positioning elements can be arranged on a flat material, wherein the flat material has a weakening area, the weakening area preferably extending in the transverse direction of the liquid collection bag, the weakening area separating a first part of the flat material from a second part of the flat material, the first part of the flat material having a first of the positioning elements and the second part of the flat material having a second of the positioning elements.

[0066] In particular, the flat material covers the bag opening in the first configuration at least partially and preferably in such a way that the liquid collection bag can only be moved from the first configuration to the second configuration by the user after the first part of the flat material has been separated from the second part of the flat material along the weakening area.

[0067] A colored marking can run along the weakening area as a color indicator, making it easier for the user to identify where to initiate the separation. Alternatively, a tactile indicator could be provided at the weakening area instead of, or in addition to, the color indicator. The tactile indicator could consist of a raised pattern or texture along the weakening area, allowing the user to feel the separation point without relying solely on visual cues. Providing multiple sensory cues, such as visual and tactile indicators, allows for customization to suit different user preferences or accessibility needs.

[0068] The weakening area can be designed according to one of the following configurations or a combination thereof: The weakening area can comprise or be formed as a weakening line with separating areas, such as cuts or holes, and connecting webs. The weakening area can comprise or be formed as a weakening line with a thinner thickness in the flat material of the volumetric positioning aid than the surrounding areas. The weakening area can comprise or be formed as a cut line through the entire thickness of the flat material of the volumetric positioning aid, with the cut line covered by a tearable cover material.

[0069] The weakening area can only extend linearly.

[0070] Alternatively, it is also conceivable that the weakening area has a shape that deviates from a linear extension, such as wavy, zigzag-shaped, or a single curved area. This allows for the advantageous provision of clearly identifiable reference points, namely complementary areas of the first and second positioning elements, which are easily recognizable by the user. This makes it easier for the user to intuitively align the positioning elements at the bag opening to form the second arrangement, which corresponds to the first.

[0071] The arrangement of a first and a second positioning element on a flat material that requires user-side separation over a weakening area thus draws the user's attention to the volume measurement positioning aid and its application.

[0072] In an alternative embodiment, at least one, preferably two, and more preferably all positioning elements can be pre-installed by the manufacturer as individualized positioning elements. At least one of the positioning elements, particularly if at least one of the positioning elements comprises or is formed from a flat material, can have a maximum transverse extent of at most 15%, more particularly at most 12%, more particularly at most 10%, and more particularly at least 1%, and more particularly at least 2% of the transverse extent of the bag opening measured in the transverse direction in the first configuration of the liquid collection bag.

[0073] The bag opening has a transverse extent of 300 - 1000 mm, in particular 400 - 900 mm, further in particular 500 - 800 mm, further in particular 600 - 800 mm.

[0074] The transverse extension of the bag opening is measured in the transverse direction as the distance between the inner edges of the bag opening in a flattened state in the first configuration of the liquid collection bag.

[0075] In the case of a bag opening with a relatively large transverse extent, a good receiving function, such as a kind of funnel, can be advantageously provided for a surge of liquid.

[0076] A positioning element, particularly in the embodiment comprising or formed from a flat material, can preferably have a maximum transverse extent of 5–150 mm, particularly 5–120 mm, further particularly 5–100 mm, further particularly 5–50 mm, and further particularly 5–30 mm. Furthermore, or additionally, a positioning element, particularly in the embodiment comprising or formed from a flat material, can have a maximum longitudinal extent of 10–60 mm, particularly 10–50 mm, and further particularly 15–40 mm.

[0077] At least one of the positioning elements may have or be made of transparent material, in particular transparent flat material.

[0078] Preferably, the surgical drape does not have any means by which the bag opening can be sealed in a liquid-tight manner after the user has transferred the fluid collection bag into the second configuration. This means that the fluid collection bag cannot be sealed liquid-tight even in the third configuration. According to a further aspect of the invention, the volume measurement positioning aid can be designed to include a locking mechanism, for example, such that the positioning elements comprise a closure mechanism like hook-and-loop fasteners, adhesive fasteners, snap fasteners, or the like. This locking mechanism ensures that the positioning elements remain aligned with the bag opening in the third configuration, enabling accurate volume measurement and preventing accidental misalignment during handling when reading the volume.

[0079] The liquid collection bag can be of any shape.

[0080] In a preferred embodiment, the liquid collection bag in the first configuration has a shape that tapers longitudinally from the bag opening, preferably a triangular shape or a trapezoidal shape or a shape comprising a first section facing the bag opening and a second section facing away from the bag opening and tapering relative to the first section, in particular triangular or rectangular.

[0081] In the second and / or third configuration, i.e., in the unfolded or filled state, the liquid collection bag can therefore be cone-shaped or frustoconical.

[0082] Furthermore, a liquid collection bag with a (flattened) triangular or trapezoidal shape has the advantage that the amount of liquid accumulating in the liquid collection bag is easily visible even with small amounts of liquid.

[0083] Another alternative design option is to provide the fluid collection bag with a first section facing the bag opening and a second section that tapers towards the first. This configuration offers flexibility in bag design and allows for variations in shape based on specific surgical needs. For example, a triangular second section may be advantageous for procedures requiring rapid drainage, while a rectangular second section provides stability and prevents the bag from collapsing during use.

[0084] The liquid collection bag may, preferably at one end opposite the bag opening, have an outlet valve. Alternatively, an embodiment without an outlet valve is possible. A preferred embodiment is one in which the liquid collection bag comprises or is formed from polymeric flat web material, in particular a film.

[0085] The liquid collection bag may preferably be made of or formed from transparent material; in particular, at least the second bag wall may have transparent areas or be transparent.

[0086] The use of transparent material or transparent areas offers the advantage of allowing medical professionals to easily monitor and observe fluid levels in the bag during a surgical procedure. This transparent window enables the user to visually check the fill level of the fluid collection bag without having to open or manipulate the bag. Measurement markings can be printed on the transparent window to indicate the volume of fluid in the bag at a given time.

[0087] Furthermore, the transparent areas of the fluid collection bag can be strategically positioned by the manufacturer to ensure good visibility of the fluid volume. For example, the lower part of the fluid collection bag, where fluids are most likely to accumulate, may have larger transparent areas for easy monitoring. Additionally, the fluid collection bag may have measurement markings on the transparent areas, allowing for accurate quantification of the collected fluids. The transparent nature of the bag ensures that any abnormalities in the color or consistency of the fluid can be immediately detected, enabling timely intervention by medical personnel.

[0088] The volume measurement zone with the measurement mark is preferably arranged on the longitudinal center axis of the liquid collection bag.

[0089] The term "arranged on the longitudinal center axis" means that the volume measurement zone is visually identifiable as being located near the longitudinal center axis, which includes a distance of the volume measurement zone from the longitudinal center axis of up to a maximum of 20% of its maximum transverse extent. In particular, the volume measurement zone is arranged such that its maximum transverse extent is at least tangent to the longitudinal center axis; preferably, the volume measurement zone overlaps the longitudinal center axis.

[0090] Preferably, the volume measuring zone is arranged essentially centrally with respect to its maximum transverse extent, in particular symmetrically to the longitudinal center axis.

[0091] The volume measurement zone can be applied directly to the bag wall, particularly the second bag wall, by printing the measurement mark onto the bag wall. Alternatively, the volume measurement zone can be applied to the bag wall, particularly the second bag wall, using a carrier material such as paper or film, with the carrier material thus defining the volume measurement zone. In this case, the measurement mark is located on the carrier material.

[0092] The measuring mark is preferably designed as a mark extending in the transverse direction of the liquid collection bag by one or more means selected from the group consisting of lines, in particular continuous and / or broken lines, dots or a combination thereof.

[0093] In this context, a line can be a continuous, unbroken line or a broken line, in particular a dot-shaped or dash-dot-shaped line.

[0094] It is also conceivable to implement at least two points on an imaginary axis extending transversely to the liquid collection bag.

[0095] Furthermore, the measurement mark on the volume measurement zone can be a numerical scale indicating the volume of fluid collected in the bag. This scale can be calibrated in milliliters or another suitable unit of measurement, providing medical personnel with precise and reliable information during the procedure.

[0096] The volumetric measuring range can, for example, feature measurement markers at regular intervals, such as every 100 milliliters, allowing medical personnel to quickly assess the amount of fluid collected in the fluid collection bag. Furthermore, the volumetric measuring range can be color-coded to indicate different volume ranges, making it easier for medical personnel to interpret fluid levels at a glance. Green, for instance, could represent a safe volume range, while red could signal a level requiring immediate attention. Alternatively, the measurement markers can consist of dots arranged in a specific pattern. These dots can be positioned to facilitate the accurate measurement of the fluid volume in the fluid collection bag.By counting the points that are immersed in the fluid, medical professionals can quickly estimate the amount of drainage and take appropriate measures if necessary.

[0097] Furthermore, the measurement marking could be implemented using various methods such as color coding or texture variations. Color-coded markings can help differentiate between different liquid levels, while textured markings can provide additional visibility by offering tactile feedback to the user.

[0098] In a preferred embodiment, the liquid collection bag can have a reinforcing element on the second bag wall, in particular on the second bag wall along the bag opening, in particular a reinforcing element as a rod element extending in the transverse direction of the liquid collection bag, preferably bendable, wherein the reinforcing element is preferably arranged on a longitudinal central axis of the liquid collection bag.

[0099] The term "arranged on the longitudinal center axis" means that the reinforcing element is visibly positioned near the longitudinal center axis, which includes a distance of the reinforcing element from the longitudinal center axis of up to a maximum of 20% of its maximum transverse extent. In particular, the reinforcing element is arranged such that its maximum transverse extent is at least tangent to the longitudinal center axis; preferably, the reinforcing element spans the longitudinal center axis.

[0100] The flexible, transverse rod element supports the bag opening and prevents it from collapsing or losing its shape during use. Furthermore, the rod element can provide stability to the bag wall, which is advantageous when the user is adjusting the liquid collection bag into its third configuration.

[0101] The reinforcing element is positioned specifically within a fold of the bag wall. A concrete example of the reinforcing element could be a flexible plastic rod that can be easily bent along the longitudinal center axis of the bag, thus allowing flexibility while maintaining the desired shape and structure of the bag opening.

[0102] In a preferred embodiment, the liquid collection bag has a fixing zone on the first bag wall, preferably in the area of ​​the bag opening, for securing the liquid collection bag, wherein in particular the first bag wall has a first section corresponding to the second bag wall in terms of area and a second section adjacent to the first section and comprising the fixing zone.

[0103] This design enables efficient collection of fluids during surgical procedures. The first wall of the bag includes a fixation zone specifically designed to secure the fluid collection bag in place, ensuring stability and preventing potential leakage or spillage.

[0104] In an advantageous embodiment, the liquid collection bag is fixed or fixable to the base cloth element in the area of ​​the bag opening, preferably exclusively in the area of ​​the bag opening, wherein fastening means or methods selected from the group consisting of ultrasonic welding, thermal welding, double-sided adhesive tapes and / or an adhesive are provided.

[0105] Ultrasonic welding is a technique that uses high-frequency ultrasonic vibrations to create a strong bond between the pouch and the base sheet element. This method ensures a strong and reliable attachment that can withstand the harsh conditions of a surgical procedure.

[0106] Alternatively, the liquid collection bag can also be attached to the base sheet element by thermal welding. In thermal welding, the materials of the bag and the base sheet element are melted and fused together by the application of heat, creating a secure bond. This method is particularly effective in ensuring a leak-proof seal between the liquid collection bag and the base sheet element. Another option for attaching the liquid collection bag to the base sheet element is the use of double-sided adhesive tape. This tape allows the bag to be attached to the base sheet element quickly and easily without the need for special equipment. The tape provides a strong bond and can be easily removed if necessary.

[0107] Adhesive also offers a flexible and versatile way to attach the bag, and allows for easy adjustment and repositioning during the surgical procedure if necessary.

[0108] In a preferred embodiment, the base cloth element has a longitudinal direction and a transverse direction, a longitudinal central axis extending in the longitudinal direction, a first transverse edge and a second transverse edge, a first longitudinal edge and a second longitudinal edge, wherein the bag opening of the liquid collection bag faces the first transverse edge of the base cloth element, and / or wherein the bag opening of the liquid collection bag extends parallel to the transverse direction of the base cloth element, and / or wherein the liquid collection bag is arranged on the longitudinal central axis of the base cloth element, preferably centered in the transverse direction on the longitudinal central axis of the base cloth element.

[0109] The surgical drape is in particular a patient underlay, furthermore in particular a patient underlay for use in operations in the field of gynecology, urology or proctology.

[0110] In one embodiment as a patient underlay, the base sheet element has a first section in the longitudinal direction, preferably with an open access and receiving area, and an adjacent second section. The open access and receiving area is preferably formed by a flat material section that covers a first section of the base sheet element and is connected to the base sheet element in a transverse connection area and in a first and a second longitudinal connection area at the transverse edge of its first section, but is not connected to the base sheet element at the transverse edge of its second section, over its entire transverse extent between the first and second longitudinal connection areas. The flat material section can be formed by folding an upper section of the base sheet element material onto itself along a transverse fold line, forming a first fold edge.The surgical drape is preferably sterilizable. In particular, the surgical drape is designed as a pre-sterilised or sterile surgical drape.

[0111] According to a further exemplary embodiment of the surgical drape according to the invention, the surgical drape has at least one fluid collection bag. Preferably, the surgical drape has exactly one fluid collection bag.

[0112] However, the surgical drape can also have multiple fluid collection bags. Within the scope of the present invention, the term "multiple fluid collection bags" means more than one fluid collection bag.

[0113] This has the advantage that at least one more fluid collection bag is available after one has been used. Preferably, the surgical drape has two fluid collection bags.

[0114] In cases where the surgical drape comprises multiple fluid collection bags, the individual fluid collection bags are preferably arranged one above the other in the same position on the surgical drape. In cases where the surgical drape comprises multiple fluid collection bags, preferably at least one fluid collection bag positioned above another has a perforation line. This has the advantage of allowing easier removal of the at least one fluid collection bag.

[0115] In a preferred embodiment, the surgical drape has two fluid collection bags, wherein both fluid collection bags can have an identical design, e.g. in size and / or shape, and both fluid collection bags have a volume measuring device and a volume measuring positioning aid.

[0116] The additional liquid collection bag preferably corresponds in its design to the liquid collection bag as described above.

[0117] Alternatively, the additional liquid collection bag may have a different embodiment than described above, such as lacking a volume measurement positioning aid. In the case of multiple liquid collection bags, the individual bags in the cascade are preferably arranged one above the other in the same position on the base cloth element.

[0118] Alternatively, preferably, the upper liquid collection bag can be positioned longitudinally relative to the liquid collection bag below it such that the opening of the upper liquid collection bag is located "above" the opening of the lower liquid collection bag. This advantageously prevents the opening of the lower liquid collection bag from being covered by the bag's seal. Furthermore, this ensures a reliable flow of liquid into the opening of the upper liquid collection bag.

[0119] The base fabric element and / or the flat web material section preferably comprises or can consist of a film material. Preferably, the film material consists of polyethylene and / or polypropylene and / or mixtures thereof. The film material is preferably a non-microporous film. The film has a basis weight of preferably 15-35 g / m². 2, especially 20-30 g / m² 2 Preferably, a film material is used as a PE film with a thickness of 40-80 pm, particularly 50-70 pm, and more preferably 55-65 pm. Alternatively, for the material of the base fabric element and / or the flat web material section, a single- or multi-layer nonwoven material, in particular a water-needled nonwoven, a spunbond nonwoven (S) and / or a meltblown nonwoven (M), and in particular a laminate of one or more spunbond (S) and / or meltblown (M) nonwoven layers, particularly preferably as SM, SMS, SMMS, SMMMS, or SMMMS, may be used. The nonwoven material most preferably consists of polyethylene and / or polypropylene and / or mixtures thereof as the main component. The nonwoven material preferably has a basis weight of 10-70 g / m². 2 , preferably from 10-60 g / m² 2 , preferably 10-50 g / m² 2 , furthermore preferably of 10-40 g / m² 2 , especially 10-35 g / m²2 , especially 15-35 g / m² 2 , especially 20-35 g / m² 2 Alternatively, the base fabric element and / or the flat web material section can also be formed from or comprise a nonwoven-film composite, in particular with the aforementioned nonwoven and film materials. The nonwoven layer can be provided on one or both sides of the film. Preferably, the nonwoven layer is provided on the top side of the base fabric element and / or the flat material section. In the case of a nonwoven-film composite, the basis weight of the nonwoven is preferably 10-40 g / m². 2 , especially 10-35 g / m² 2 , especially 15-35 g / m² 2 , especially 20-35 g / m² 2 and the film has a basis weight of preferably 15-35 g / m² 2 , especially 20-30 g / m² 2The lamination of the nonwoven-film composite can be carried out in any way; preferably, the nonwoven and film components of the composite are bonded together using thermal bonding and / or adhesive, in particular hot melt.

[0120] The subject matter of a dependent claim relates to a method for using a surgical drape comprising a base drape element with a top and a bottom and with at least one liquid collection bag fixed or definable on the top and comprising a volume measuring means, wherein the liquid collection bag comprises or is formed from flexible material and the volume measuring means comprises a volume measuring zone arranged on a bag wall and having a measuring mark. The method comprises a) providing the liquid collection bag in a flat, spread-out first configuration comprising a first bag wall facing the top and a second bag wall lying flat on the first bag wall and with a volume measuring positioning aid comprising positioning elements,and wherein in the first configuration of the liquid collection bag the positioning elements are aligned in a first arrangement by the manufacturer, b) conversion of the first configuration by the user into a second configuration of the liquid collection bag in which the second bag wall is spaced at least partially in a Z-direction from the first bag wall such that liquid can enter the liquid collection bag through the bag opening and be collected by gravity, and the positioning elements are moved from the first arrangement into an arrangement different from the first arrangement, c) conversion of the second configuration by the user into a third configuration, wherein in the third configuration the positioning elements are aligned in a second arrangement, the second arrangement corresponding to the first arrangement,by the user grasping the liquid collection bag in the second configuration at the second bag wall and bringing the second bag wall together with the first bag wall in the Z-direction, such that the positioning elements in the second arrangement are aligned according to the first arrangement, and d) by the user determining the volume of the liquid collected in the liquid collection bag in the third configuration by means of the measuring mark. The invention will be explained in more detail below with reference to the figures. In these figures:

[0121] Fig. 1 is a schematic, not to scale, top view of a surgical drape according to the invention with a fluid collection bag in the first configuration and with the volume measurement positioning aid with positioning elements aligned in the first arrangement; the positioning elements are in the form of a flat material with a weakening area;

[0122] Fig. 1a a sectional view of the surgical cloth according to Fig. 1 ;

[0123] Fig. 1b shows another sectional view of the surgical drape according to Fig. 1 in the version with two fluid collection bags;

[0124] Fig. 2 shows a schematic, not-to-scale top view of a surgical drape according to the invention with a liquid collection bag in a first configuration and with the volume measurement positioning aid with positioning elements aligned in the first arrangement in a further embodiment; the positioning elements in the form of a flat material as positioning elements already separated by the manufacturer;

[0125] Fig. 2a shows a sectional view of the surgical drape according to Fig. 2;

[0126] Fig. 3 shows a schematic, not to scale, top view of a surgical cloth according to the invention in a further embodiment;

[0127] Fig. 3a shows a sectional view of the surgical drape according to Fig. 3;

[0128] Fig. 4 shows a schematic, not to scale, top view of a surgical cloth according to the invention in a further embodiment;

[0129] Fig. 4a a sectional view of the surgical drape according to Fig. 4; Fig. 5a schematically a sectional view of the surgical drape in use with the fluid collection bag in the first configuration and the positioning elements in the first arrangement;

[0130] Fig. 5b a schematic, not to scale top view of a liquid collection bag in first configuration and the positioning elements in first arrangement;

[0131] Fig. 6a schematically shows a sectional view of the surgical drape in use with the fluid collection bag in the second configuration and the positioning elements in an arrangement different from the first arrangement;

[0132] Fig. 6b shows a schematic, not to scale, top view of a liquid collection bag in the second configuration and the positioning elements in an arrangement different from the first arrangement;

[0133] Fig. 7a schematically shows a sectional view of the surgical drape in use with the fluid collection bag in the third configuration and the positioning elements in the second arrangement;

[0134] Fig. 7b is a schematic, not to scale, top view of a liquid collection bag in the third configuration and the positioning elements in the second arrangement;

[0135] Fig. 8 shows a schematic, not to scale, top view of a liquid collection bag in a first configuration and the positioning elements in the first arrangement in a further embodiment of a flat material with a weakening area;

[0136] Fig. 9 is a schematic, not-to-scale top view of a liquid collection bag in a first configuration and with a plurality of positioning elements in the first arrangement in the embodiment of a flat material with a weakening area; Fig. 10a is a schematic, not-to-scale top view of a liquid collection bag in a first configuration and the positioning elements in the first arrangement in a further embodiment of the combination of a plurality of positioning elements;

[0137] Fig. 10b shows a schematic, not to scale, top view of a liquid collection bag in a first configuration and the positioning elements in the first arrangement in a further embodiment of the combination of a plurality of positioning elements;

[0138] Fig. 11a a schematic, not to scale top view of a liquid collection bag in first configuration and the positioning elements in the first arrangement in an exemplary embodiment of positioning elements aligned overlapping each other;

[0139] Fig. 11b embodiment according to Fig. 11a in an exploded view of the first and second bag walls;

[0140] Fig. 12a a schematic, not to scale top view of a liquid collection bag in first configuration and the positioning elements in the first arrangement in an exemplary embodiment of the combination as printing and as flat material;

[0141] Fig. 12b embodiment according to Fig. 12a in an exploded view of the first and second bag walls and corresponding positioning elements;

[0142] Fig. 13a a schematic, not to scale top view of a liquid collection bag in first configuration and the positioning elements in the first arrangement in a further exemplary embodiment of the combination as printing and as flat material;

[0143] Fig. 13b embodiment according to Fig. 13a in an exploded view of the first and second bag walls and corresponding positioning elements; Fig. 14 a schematic, not to scale, top view of a

[0144] Liquid collection bag in first configuration with a reinforcing element;

[0145] Fig. 14a shows a sectional view of the liquid collection bag according to Fig. 14a;

[0146] Fig. 15a, Fig. 15b and Fig. 15c: schematic, not to scale top views of liquid collection bags in first configuration in different shapes.

[0147] Fig. 1 shows a schematic top view of a surgical drape 10 according to the invention. The surgical drape comprises a base drape element 12 with a top surface 14 and a bottom surface 16, wherein at least one fluid collection bag 30 is attached to the top surface 14. The fluid collection bag 30 comprises or is formed from flexible material. Figure 1 shows the fluid collection bag in a first configuration 36 laid flat, with a first bag wall 42 facing the top surface 14 and a second bag wall 44 lying flat on the first bag wall. The first and second bag walls 42, 44 define the bag opening 40. The fluid collection bag 30 is attached to the base drape element 12 in the region of the bag opening 40, preferably exclusively in the region of the bag opening.The liquid collection bag 30 has a fixing zone 46 on the first bag wall 42, preferably in the region of the bag opening 40, for securing the liquid collection bag. The first bag wall 42 has a first section 47 corresponding to the area of ​​the second bag wall 44 and a second section 48 adjoining the first section and encompassing the fixing zone 46. The liquid collection bag has a shape that tapers longitudinally 32 from the bag opening 40, here a triangular shape. Other shapes of the liquid collection bag are also conceivable, such as a trapezoidal liquid collection bag 30, or a shape comprising a first section 90 facing the bag opening 40 and a second section 92 facing away from the bag opening and tapering relative to the first section, triangular (Fig. 15b) or rectangular (Fig. 15c).

[0148] Figure 1 further shows the liquid collection bag 30 with a longitudinal direction 31, a transverse direction 32, and a volume measuring device 20, wherein the volume measuring device 20 comprises a volume measuring zone 22 arranged on the second bag wall 44, and the volume measuring zone has a measuring mark 24. The measuring mark 24 is designed as a marking extending in the transverse direction 32 of the liquid collection bag 30, for example as a line, although other embodiments are conceivable using one or more means 26 such as a broken line or dots.

[0149] The volume measurement zone 22 can be applied directly to the second bag wall 44 by printing the measurement mark 24 on the second bag wall. Alternatively, the measurement mark 24 can be applied using a carrier material 28, such as paper or film, which defines the volume measurement zone 22.

[0150] The liquid collection bag 30 comprises or is formed from polymeric flat web material, in particular a film. Preferably, the liquid collection bag 30 has or is formed from transparent material, in particular at least the second bag wall 44 has transparent areas or is transparent.

[0151] Figure 1 further shows a volume measurement positioning aid 50 at the bag opening 40, comprising positioning elements 52, 54. A first positioning element 52 is arranged on the first bag wall 42 and a second positioning element 54 is arranged on the second bag wall 44, and in the first, flattened configuration 36 of the liquid collection bag 30, the positioning elements 52, 54 are aligned at the bag opening 40 in a first arrangement 56 by the manufacturer.

[0152] In the illustrated embodiment, the positioning elements 52, 54 are arranged on a flat material 60, the flat material 60 having a weakened area 66. The weakened area 66 delineates a first part 62 of the flat material from a second part 64 of the flat material, wherein the first part 62 of the flat material has the first of the positioning elements 52 and the second part 64 of the flat material has the second of the positioning elements 54. Suitable flat materials are preferably polymeric materials such as a film, or also, for example, paper or nonwoven materials. The weakened area 66 preferably extends in the transverse direction 32 of the liquid collection bag 30. In the first configuration 36, the flat material 60 covers at least part of the bag opening 40.In the illustrated embodiment, the first of the positioning elements 52 has a first marking zone 72, and the second of the positioning elements 54 has a second marking zone 74. The first marking zone 72 and the second marking zone 74 are defined by a graphic in the form of an arrow. In the illustrated embodiment, the shape, color, size, and contour of the marking zones 72 and 74 are identical. The marking zones are mirror-symmetrical and designed as opposing, i.e., "pointing," directional arrows. The marking zones are understood as zones that, due to their visually perceptible characteristics, are visually recognizable and thus visually distinguishable, in particular from an adjacent area.

[0153] In an alternative embodiment, as shown schematically in Fig. 2 and also in Fig. 2a as a sectional view of the surgical drape 10 according to Fig. 2 along AA, the volume measurement positioning aid 50 has exactly two positioning elements 52, 54, which are pre-attached to the bag opening by the manufacturer. The positioning elements 52, 54 each comprise a flat material 60, such as a film, but other materials such as paper are also conceivable. The further reference numerals correspond as described for Figure 1.

[0154] The surgical drape 10 is primarily a patient underlay drape.

[0155] Figure 1 shows a schematic representation of a surgical drape 10 comprising a base drape element 12 with a longitudinal direction 101, a transverse direction 102, a top surface 14, a bottom surface 16, a first transverse edge 104, a second transverse edge 105, a first longitudinal edge 106, a second longitudinal edge 107, and a longitudinal center axis 103. The base drape element 12 has a first section 110 extending from the first transverse edge 104, which is covered on the top surface 14 by a flat material section 112. Furthermore, the flat material section 112 has a first section transverse edge 113 and a second section transverse edge 116. The flat material section 112 is also connected to the base drape element 12 in the region of its first section transverse edge 113 by a transverse connection area 117 and by a first 118 and a second longitudinal connection area 119.In contrast, the flat material section 112 is not connected to the base fabric element 12 in the area of ​​its second section transverse edge 116, specifically over its entire transverse extent between the first and second longitudinal connection area 118, 119, so that the flat material section 112 together with the base fabric element 12 in the first section 110 forms a further connection through the.

[0156] The transverse connection area 117 and the longitudinal connection areas 118, 119 define the intervention and receiving area 114, which is open towards the second transverse edge 105, i.e., "downwards". Furthermore, the surgical drape 10 has a hand positioning mark 123 in the area of ​​the intervention and receiving area 114. In the illustrated case, the hand positioning mark 123 is located on an outer surface of the flat material section 112 and comprises two labels, each bearing a stylized human hand. The first label is located to the left of and spaced apart from the longitudinal center axis 103, and the second label is located to the right of and spaced apart from the longitudinal center axis 103. In particular, both labels are positioned in the vertical projection (perpendicular to the transverse and longitudinal directions in the top view) above the intervention and receiving area.The surgical drape is preferably positioned on a support surface such as a table, couch, or chair such that at least the first section 110 lies at least partially beneath the patient. To position the surgical drape, the user preferably aligns both hands within the procedure and receiving area 114. Furthermore, the base drape element 12 has a second section 120 adjacent to the first section 110 in the longitudinal direction 101. The fluid collection bag 30 is located within the second section 120.

[0157] Fig. 1a schematically shows a cross-sectional view of the surgical drape 10 along AA. Visible are the longitudinal direction 101, the base drape element 12, the flat material section 112, the transverse connection area 117, the intervention and collection space 114, the fluid collection bag 30, and its fixation to an upper surface 14 of the base drape element 12 by means of a fastening agent 49, such as an adhesive. The fastening agent 49 is located in the fixation zone 46, in the second section 48 of the first bag wall 42. It is also evident that the flat material section 112 is formed by folding an upper section of the base drape element material onto itself along a transverse fold line to form a first fold edge 111. The first fold edge 111 thus represents the transverse connection area 117 and the first section transverse edge 113 (Fig. 1).Thus, in this embodiment, the base cloth element 12 and the flat material section 112 consist of the same material. Also recognizable is the volume measuring positioning aid 50, which covers the bag opening 40, comprising, in its design as a flat material 60, the positioning element 52 contained in the first part 62 of the flat material and the positioning element 54 contained in the second part 64 of the flat material, which can be separated from each other via a weakening area 66. Further reference numerals correspond as described for Figure 1.

[0158] In the design of the surgical drape 10, it is conceivable that the fluid collection bag 30 is supported over its entire extent, either in the longitudinal direction 31 and / or in the transverse direction 32, by the base drape element 12 with at least the same extent and preferably a longer extent, as schematically illustrated in Figures 1, 1a and 1b, 2 and 2a. In an alternative embodiment of the surgical drape 10, the extent of the base drape element 12 can be shorter than the extent of the fluid collection bag, i.e., that the fluid collection bag, in its flattened first configuration, extends beyond edges, for example, the second transverse edge 105 of the equally flattened base drape element 12, as schematically shown in Figure 3 in the top view and in Figure 3a as a sectional view of the surgical drape 10 according to Figure 3 along AA.Alternatively, the fluid collection bag 30 can be fixed or definable at an edge, preferably the second transverse edge 105 of the base cloth element 12, such that, in a top view of the fluid collection bag in the first, flattened configuration, the bag opening 40 of the fluid collection bag extends to the position of the edge, i.e., the bag opening is arranged directly on the edge of the base cloth element or even outside the edge 105 of the base cloth element, as shown schematically in a top view in Fig. 4 and in a sectional view of the surgical cloth 10 according to Fig. 4 along AA in Fig. 4a. The other reference numerals correspond as described for Fig. 1.

[0159] Figures 5a, 6a, and 7a each schematically show a sectional view of the surgical drape 10 in use with the fluid collection bag 30 and the volume measurement positioning aid 50 with the positioning elements 52 and 54. The surgical drape 10 rests on a support surface 17, e.g., an operating table. Figure 5a illustrates the fluid collection bag 30 in the first configuration 36 and the positioning elements 52 and 54 in a first arrangement 56. Figure 6a shows the fluid collection bag 30 in the second configuration 37 and the positioning elements 52 and 54 in an arrangement 57 that differs from the first arrangement. Figure 7a illustrates the fluid collection bag 30 in the third configuration 38 and the positioning elements 52 and 54 in a second arrangement 58 corresponding to the first arrangement.

[0160] Figures 5b, 6b and 7b each show a schematic, not-to-scale top view of a liquid collection bag 30 and the volume measurement positioning aid 50 with positioning elements 52, 54 attached to the bag opening 40. Analogous to Figures 5a, 6a and 7a, the states of the first configuration 36 of the liquid collection bag and the first arrangement 56 of the positioning elements (Fig. 5b), the second configuration 37 of the liquid collection bag and the different arrangement 57 of the positioning elements (Fig. 6b), and the third configuration 38 of the liquid collection bag and the second arrangement 58 of the positioning elements (Fig. 7b) are shown.

[0161] The first configuration 36 of the liquid collection bag 30 can be transformed by the user into a second configuration 37 of the liquid collection bag, wherein in the second configuration 37 of the liquid collection bag 30, the second bag wall 44 is spaced at least partially in a Z-direction 33 from the first bag wall 42 such that, driven by gravity, liquid 39 can penetrate the liquid collection bag through the bag opening 40 and be collected. The Z-direction 33 extends perpendicular to the longitudinal direction 31 and to the transverse direction 32. In the second configuration 37, the positioning elements 52, 54 are moved from the first arrangement 56 to an arrangement 57 that differs from the first arrangement (Figs. 6a, 6b).Due to the spacing of the bag walls from one another, the volume measuring device 20, attached to the second bag wall 44, with its volume measuring zone and measuring mark 24, is moved from a position provided by the manufacturer, as schematically illustrated in Fig. 6a. The second configuration 37 of the liquid collection bag 30 can be moved by the user into a third configuration 38 of the liquid collection bag (Figs. 7a, 7b), wherein in the third configuration 38 the positioning elements 52, 54 at the bag opening 40 are aligned in a second arrangement 58, the second arrangement 58 corresponding to the first arrangement 56. In this third configuration 38, the volume of the liquid 39 collected in the liquid collection bag can then be determined by means of the measuring mark 24. For this purpose, the liquid collection bag is appropriately configured by the manufacturer, in particular calibrated.

[0162] Figures 5a, 6a and 7a, in conjunction with Figures 5b, 6b and 7b, also illustrate the inventive method for using the surgical drape 10 to determine the volume of liquid in a liquid collection bag made of flexible material by means of the measuring mark 24. The method comprises the steps shown schematically in Figures 5a and 6a.Figure 6a illustrates the provision of the liquid collection bag 30 in a first configuration 36, having a first bag wall 42 facing the top 14 and a second bag wall 44 lying flat on the first bag wall, and with a volume measurement positioning aid 50 attached to the bag opening 40 by the manufacturer, comprising positioning elements 52, 54, wherein a first of the positioning elements 52 is arranged on the first bag wall 42 and a second of the positioning elements 54 is arranged on the second bag wall 44, and wherein in the first configuration 36 of the liquid collection bag the first positioning element 52 and the second positioning element 54 are aligned at the bag opening by the manufacturer in a first arrangement 56.In the embodiment shown, the flat material 60 covers the bag opening 40 in the first configuration 36 at least partially, so that only after user-side separation along the weakening area 66 can the liquid collection bag be moved by the user from the first configuration 36 to the second configuration 37.

[0163] In the next step b (Fig. 6a, 6b), the first configuration 36 is converted by the user into a second configuration 37 of the liquid collection bag, in which the second bag wall 44 is spaced at least partially in a Z-direction 33 from the first bag wall 42, and the positioning elements 52, 54 are moved from the first arrangement 56 into an arrangement 57 that differs from the first arrangement. This allows liquid 39 to enter the liquid collection bag through the bag opening 40 and be collected by gravity. In the next step c (Fig.7a, 7b) The user transforms the second configuration 37 into a third configuration 38, wherein in the third configuration 38 the positioning elements 52, 54 are aligned at the bag opening in a second arrangement 58, the second arrangement 58 corresponding to the first arrangement 56, by grasping the liquid collection bag 30 in the second configuration 37 at the second bag wall 44 and bringing the second bag wall 44 together in the Z-direction 33 with the first bag wall 42, such that the positioning elements 52, 54 in the second arrangement 58 are aligned according to the first arrangement 56. In the following step, the user determines the volume of the liquid 39 collected in the liquid collection bag in the third configuration 38 by means of the measuring mark 24 (Figs. 7a, 7b).

[0164] In a preferred embodiment, as schematically shown in top view in Fig. 14 and in a sectional view according to Fig. 14a, the liquid collection bag 30 can have a reinforcing element 80 on the second bag wall 44, particularly on the second bag wall along the bag opening 40. Preferably, the second bag wall 44 is folded back on itself at the bag opening, and the reinforcing element is inserted within this fold 84. The reinforcing element 80 is preferably designed as a rod element 82 extending in the transverse direction 32, preferably being bendable. The reinforcing element is arranged about a longitudinal central axis 35 of the liquid collection bag. The weakened area 66 can extend exclusively linearly, as shown in the embodiment in Fig. 1.

[0165] Alternatively, it is also conceivable that the weakening area 66 has a course that deviates from a linear extension, such as wavy, zigzag-shaped, a single curved area, as schematically illustrated in Figure 8.

[0166] The embodiment according to Fig. 1 or Fig. 2 or Fig. 8 shows exactly two positioning elements 52, 54, which are arranged on the longitudinal center axis 35, preferably centered on the longitudinal center axis 35 in the transverse direction.

[0167] Various designs of the first and second positioning elements are conceivable for the volume measurement positioning aid.

[0168] Fig. 9 shows an exemplary embodiment in which multiple positioning elements are provided. Two first positioning elements 52 and two second positioning elements 54 are preferably each symmetrically aligned with respect to the longitudinal center axis 35 of the liquid collection bag, and at a distance from the longitudinal center axis 35. Each second positioning element 54 associated with a first positioning element 52 is aligned with the respective first positioning element 52 on a respective longitudinal axis 34, specifically in the transverse direction. In the illustrated case, each first and second positioning element 52, 54 can be separated from each other via a weakening area 66.

[0169] Figures 10a and 10b schematically illustrate further embodiments of the combination of a plurality of positioning elements 52, 54.

[0170] Another exemplary embodiment is illustrated in Fig. 11a in conjunction with Fig. 11b as an exploded view: In the first arrangement, the positioning elements 52, 54 can be aligned to overlap each other, at least partially, and preferably completely. As shown, the shape and contour of a first positioning element 52 can correspond to the shape and contour of a second positioning element 54. The positioning elements 52, 54 are each formed as individual positioning elements by a flat material 60, each of which has a marking zone 72, 74. In this case, the marking zones 72, 74 are also congruently aligned. Another exemplary embodiment is shown in Fig. 12a in conjunction with Fig.Figure 12b illustrates this in an exploded view: Here, the positioning element 54, located on the longitudinal center axis 35 of the liquid collection bag on the second bag wall 44, is visually identifiable as a flat material 60 with a complete coloration as a marking zone 74. The positioning element 54 has a section with a rounded contour. The other positioning element 52 is formed by a marking zone 72, which is designed as a print 68 on the first bag wall 42 around the longitudinal center axis 35 of the liquid collection bag. The positioning elements 52 and 54 complement each other in shape, such that one positioning element 52 has an arc shape that is complementary to the rounded contour of the other positioning element 54.

[0171] Another exemplary embodiment is illustrated in Fig. 13a in conjunction with Fig. 13b as an exploded view: The volume measurement positioning aid has a plurality of positioning elements, including a single positioning element 54 arranged on the second bag wall 44 and two further positioning elements 52 assigned to the first bag wall 42. The positioning element 54 comprises a flat material 60, the flat material having a marking zone 74 in the form of a line extending in the transverse direction. The flat material of this positioning element 54 is attached to the second bag wall 44 and extends beyond a free edge 45 of the second bag wall 44 that describes the bag opening. The marking zone 74 is preferably provided in the projecting part of the flat material.The protruding part of the flat material can advantageously be used as a grip aid ("finger lift"), i.e., for lifting the liquid collection bag at the second bag wall when transferring the liquid collection bag from the second configuration to the third configuration. The two additional positioning elements 52 on the first bag wall 42 are arranged one to the left and the other to the right of the longitudinal center axis 35 of the liquid collection bag. These additional positioning elements 52 are each designed as a marking zone 72 in the form of two mutually directed arrows extending in the transverse direction, and are printed as a marking 68. As shown, the directional arrows are spaced apart from each other in the transverse direction, forming a gap.The marking zone 74 arranged on the second bag wall 44 is formed in the form of a transverse line that closes the gap between the directional arrows (Fig. 13a). If the surgical drape 10 comprises multiple fluid collection bags, the individual fluid collection bags are preferably arranged one above the other in the same position on the base drape element 12. In the case of multiple fluid collection bags, preferably at least one fluid collection bag 30 lying above a fluid collection bag 30 has a perforation line (not shown). This has the advantage of allowing easier removal of the at least one fluid collection bag. An exemplary embodiment with two fluid collection bags 30 is shown schematically in Fig. 1b.In a preferred embodiment, the two liquid collection bags are identical in shape and size, and both liquid collection bags also have a volume measuring device 20 and a volume measuring positioning aid 50.

[0172] Furthermore, as shown in Figs. 1 and 2, the base cloth element 12 has a longitudinal direction 101 and a transverse direction 102, a longitudinal center axis 103 extending in the longitudinal direction 101, a first transverse edge 104, a second transverse edge 105, a first longitudinal edge 106, and a second longitudinal edge 107, wherein the bag opening 40 of the liquid collection bag 30 preferably faces the first transverse edge 104 of the base cloth element. Preferably, the bag opening 40 of the liquid collection bag extends parallel to the transverse direction 102 of the base cloth element 12. Preferably, the liquid collection bag 30 is arranged in the transverse direction 102 on the longitudinal center axis 103 of the base cloth element, and more preferably, it is arranged centered in the transverse direction 102 on the longitudinal center axis 103 of the base cloth element.

Claims

Patent claims 1. Surgical drape (10) comprising a base drape element (12) with a top (14) and a bottom (16), comprising at least one fluid collection bag (30) fixed or definable on the top (14) of the base drape element, having a longitudinal direction (31), a transverse direction (32) and a bag opening (40), wherein the fluid collection bag comprises volume measuring means (20), wherein the fluid collection bag comprises or is formed from flexible material and, in a flat, spread-out first configuration (36), has a first bag wall (42) facing the top (14) and a second bag wall (44) lying flat on the first bag wall, and wherein the first configuration (36) of the fluid collection bag can be brought into a second configuration (37) of the fluid collection bag by the user.wherein in the second configuration (37) of the liquid collection bag the second bag wall (44) is spaced at least partially in a Z-direction (33) from the first bag wall (42) such that fluid (39) can enter the liquid collection bag through the bag opening (40) and be collected by gravity, wherein the Z-direction (33) extends perpendicular to the longitudinal direction (31) and to the transverse direction (32), wherein the volume measuring means (20) comprises a volume measuring zone (22) arranged on a bag wall (42, 44), preferably on the second bag wall (44), and the volume measuring zone has a measuring mark (24), characterized in that the surgical drape (10) has a volume measuring positioning aid (50), - wherein the volume measurement positioning aid (50) comprises positioning elements (52, 54), and wherein the positioning elements are aligned by the manufacturer in a first arrangement (56) in the first configuration (36) of the liquid collection bag laid flat, wherein the positioning elements (52, 54) in the second configuration (37) are moved from the first arrangement (56) to an arrangement (57) that differs from the first arrangement, - wherein the user can bring the second configuration (37) of the liquid collection bag into a third configuration (38) of the liquid collection bag, and wherein in the third configuration (38) the positioning elements (52, 54) are aligned in a second arrangement (58), wherein the second arrangement (58) corresponds to the first arrangement (56), and wherein in the third configuration (38) the volume of the liquid (39) collected in the liquid collection bag can be determined by means of the measuring mark (24).

2. Surgical cloth (10) according to claim 1 , characterized in that the volume measurement positioning aid (50) consists of two positioning elements (52, 54).

3. Surgical cloth (10) according to claim 1, characterized in that the volume measurement positioning aid (50) has a plurality of positioning elements (52, 54).

4. Surgical drape (10) according to one of the preceding claims, characterized in that at least one first positioning element (52) is arranged on the first bag wall (42) and a second positioning element (54) is arranged on the second bag wall (44) or that one first positioning element (52) is arranged on the base drape element (12) and a second positioning element (54) is arranged on the second bag wall (44).

5. Surgical drape (10) according to one of the preceding claims, characterized in that at least one, preferably all, of the positioning elements (52, 54) are symmetrically aligned with respect to a longitudinal axis (34), in particular a longitudinal central axis (35) of the fluid collection bag (30).

6. Surgical drape (10) according to one of the preceding claims, characterized in that at least one, preferably all of the Positioning elements (52, 54) comprise or are formed from a flat material (60), wherein the flat material is selected from the group consisting of polymeric material, in particular a film, paper material, in particular coated paper material, nonwoven material, nonwoven-film laminate, and / or at least one, preferably all, of the positioning elements (52, 54) comprise or are formed from a printing (68), a coating or a coloring.

7. Surgical cloth (10) according to one of the preceding claims, characterized in that at least one, preferably all, of the positioning elements (52, 54) have a marking zone (72, 74).

8. Surgical cloth (10) according to claim 7, characterized in that at least one, preferably all, of the marking zones (72, 74) are formed by one or more means selected from the group consisting of graphics, characters, numbers, patterns, lines, symbols or area-extending colored zones.

9. Surgical drape (10) according to one of the preceding claims, characterized in that the positioning elements are arranged on a flat material (60), wherein the flat material (60) has a weakening area (66), wherein the weakening area (66) preferably extends in the transverse direction (32) of the fluid collection bag (30), wherein the weakening area (66) separates a first part (62) of the flat material from a second part (64) of the flat material, wherein the first part (62) of the flat material has a first of the positioning elements (52) and the second part (64) of the flat material has a second of the positioning elements (54).

10. Surgical cloth (10) according to claim 9, wherein the flat material (60) at least partially covers the bag opening (40) in the first configuration (36), and preferably covers it in such a way that only after the user separates the first part (62) of the flat material (60) from the second part (64) of the flat material along the weakening area (66) can the liquid collection bag be moved by the user from the first configuration (36) to the second configuration (37).

11. Surgical cloth (10) according to one of the preceding claims, characterized in that at least one of the positioning elements (52, 54) has or is formed from transparent material, in particular transparent flat material.

12. Surgical drape (10) according to one of the preceding claims, characterized in that the surgical drape does not have means by which the bag opening (40) can be closed in a liquid-tight manner after the user has placed the liquid collection bag (30) into the second configuration (37).

13. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) in the first configuration (36) has a shape tapering in the longitudinal direction (31) starting from the bag opening (30), preferably a triangular shape or a trapezoidal shape or a shape comprising a first section (90) facing the bag opening (40) and a second section (92) facing away from the bag opening and tapering relative to the first section, in particular triangular or rectangular.

14. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) comprises or is formed from polymeric flat web material, in particular a film.

15. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) has or is formed from transparent material, in particular at least the second bag wall (44) has transparent areas or is formed transparently.

16. Surgical cloth (10) according to one of the preceding claims, characterized in that the volume measuring zone (22) with the measuring mark (24) is arranged on the longitudinal central axis (35) of the fluid collection bag (30).

17. Surgical drape (10) according to one of the preceding claims, characterized in that the measuring mark (24) is formed as a marking extending in the transverse direction (32) of the fluid collection bag (30) by one or more means (26) selected from the group consisting of line, in particular continuous and / or broken line, dots, or combination thereof.

18. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) is attached to the second bag wall (44), in particular to the second bag wall (44) along the bag opening (40), a comprising a reinforcing element, in particular a reinforcing element (80) as a rod element (82) extending in the transverse direction (32) of the liquid collection bag (30), preferably flexible, wherein the reinforcing element (80) is preferably arranged on a longitudinal central axis (35) of the liquid collection bag (30).

19. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) has a fixation zone (46) on the first bag wall (42), preferably in the area of ​​the bag opening (40), for securing the fluid collection bag, wherein in particular the first bag wall (42) has a first section (47) corresponding to the area of ​​the second bag wall (44) and a second section (48) adjoining the first section and comprising the fixation zone (46).

20. Surgical drape (10) according to one of the preceding claims, characterized in that the fluid collection bag (30) is fixed or can be fixed to the base drape element (12) in the area of ​​the bag opening (40), preferably exclusively in the area of ​​the bag opening, wherein in particular fastening means or methods (49) selected from the group consisting of ultrasonic welding, thermal welding, double-sided adhesive tapes and / or an adhesive are provided.

21. Surgical drape (10) according to one of the preceding claims, characterized in that the base drape element (12) has a longitudinal direction (101) and a transverse direction (102) and a longitudinal central axis (103) extending in the longitudinal direction and a first transverse edge (104) and a second transverse edge (105) and a first longitudinal edge (106) and a second longitudinal edge (107), and wherein the bag opening (40) of the fluid collection bag (30) faces the first transverse edge (104) of the base drape element and / or wherein the bag opening (40) of the fluid collection bag extends parallel to the transverse direction (102) of the base drape element (12) and / or wherein the fluid collection bag (30) is arranged on the longitudinal central axis (103) of the base drape element (12), preferably centered in the transverse direction (102) on the longitudinal central axis (103) of the base drape element.

22. Surgical drape (10) according to one of the preceding claims, characterized in that the surgical drape is a patient underlay drape, further in particular a patient undersheet for use during operations in the fields of gynecology, urology or proctology.

23. Method for using a surgical drape (10) comprising a base drape element (12) with a top (14) and a bottom (16) and with at least one fluid collection bag (30) fixed or definable on the top (14) and comprising a volume measuring means (20), wherein the fluid collection bag comprises or is formed from flexible material and the volume measuring means (20) comprises a volume measuring zone (22) arranged on a bag wall (42, 44) and comprising a measuring mark (24), the method comprising a) providing the fluid collection bag (30) in a flat, spread-out first configuration (36) comprising a first bag wall (42) facing the top (14) and a second bag wall (44) lying flat on the first bag wall and comprising a volume measuring positioning aid (50) comprising positioning elements (52, 54),and wherein in the first configuration (36) of the liquid collection bag the positioning elements (52, 54) are aligned by the manufacturer in a first arrangement (56), b) conversion of the first configuration (36) by the user into a second configuration (37) of the liquid collection bag, in which the second bag wall (44) is at least partially spaced in a Z-direction (33) from the first bag wall (42) such that, driven by gravity, liquid (39) can penetrate into the liquid collection bag through the bag opening (40) and be collected, and the positioning elements (52, 54) are moved from the first arrangement (56) into an arrangement (57) that differs from the first arrangement, c) conversion of the second configuration (37) by the user into a third configuration (38), wherein in the third configuration (38) the positioning elements (52, 54) are arranged in a second arrangement (58), are aligned, wherein the second arrangement (58) corresponds to the first arrangement (56), by user grasping the liquid collection bag (30) in the second configuration (37) at the second bag wall (44) and merging the second bag wall (44) in the Z-direction (33) with the first bag wall (42), such that the positioning elements (52, 54) in the second arrangement (58) are aligned according to the first arrangement (56) and d) user determination of the volume of the in the Liquid collected in the liquid collection bag (39) in the third configuration (38) by means of the measuring mark (24).

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