Attraction collection device

Abstract

The aspirate collection device may be provided by a collection device including a fluid collector, a lid, and a solids filter, the fluid collector having a first light-transmissive wall defining an opening in a first surface, the lid configured to selectively interface with the fluid collector to seal the opening and define a fluid containment region, the lid defining a first through hole substantially parallel to the first surface, and the solids filter having a second light-transmissive wall defining a plurality of fluid outlets and configured to selectively interface with the first through hole and dispose the plurality of fluid outlets within the fluid containment region.

Description

[Technical field]

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 63 / 322,487, filed March 22, 2022, entitled "SUCTION AND ASPIRATION COLLECTION DEVICE," which is hereby incorporated by reference in its entirety. [Background technology]

[0002] A suction and aspiration device is a medical device that removes bodily fluids, such as blood, from a patient. A vacuum pump provides negative pressure (e.g., a relative vacuum) to draw the bodily fluid and any solid matter carried by or with the bodily fluid into a collection device. A filter placed in the fluid's flow path to the collection device may be used to separate solid matter, such as blood clots, from the collected liquid. Summary of the Invention [Problem to be solved by the invention]

[0003] The present disclosure relates generally to improved aspirate collection devices. The improvements described herein provide a variety of advantages, including, but not limited to, easier use of the collection device, easier analysis of fluids and solids collected by the collection device, more robust and reliable sealing of the collection device, tolerance of greater pressure differentials to the collection device, and therefore improved or simplified manufacturing techniques. [Means for solving the problem]

[0004] One embodiment of the present disclosure is a collection device including a fluid collector, a lid, and a solids filter, the fluid collector having a first light-transmissive wall defining an opening in a first plane, the lid configured to selectively interface with the fluid collector to seal the opening and define a fluid containment region, the lid defining a first through hole substantially parallel to the first plane, and the solids filter having a second light-transmissive wall defining a plurality of fluid outlets and configured to selectively interface with the first through hole and disposing the plurality of fluid outlets within the fluid containment region.

[0005] In some embodiments of the collection device, the collection device further includes a cap configured to secure a solids filter within the first through hole and to secure intake tubing within the solids filter. In some such embodiments, the lid further defines a second through hole substantially parallel to the first surface and further includes vacuum tubing attached to the second through hole and configured to apply a negative pressure to the fluid containment region to draw fluid through the intake tubing into the fluid containment region. In some such embodiments, the collection device further includes a return filter disposed within the fluid containment region and connected to the second through hole.

[0006] In some embodiments of the collection device, the collection device further includes a pressure filter, and the pressure film is disposed in the fluid containment region and configured to change color in response to the fluid containment region losing containment after negative pressure is applied. In some such embodiments, the lid extends a first distance from the first surface, the pressure film is disposed a second distance from the first surface, and the plurality of fluid outlets are disposed at least a third distance from the first surface, where the first distance, the second distance, and the third distance are measured perpendicularly from the first surface, and where the first distance is less than the second distance and the third distance is greater than the second distance.

[0007] In some embodiments of the collection device, the negative pressure is selected from the group consisting of 1-5 pounds per square inch (PSI) below the current atmospheric pressure, 5 PSI below the current atmospheric pressure, 5-10 PSI below the current atmospheric pressure, 10 PSI below the current atmospheric pressure, 10-15 PSI below the current atmospheric pressure, and up to 15 PSI below the current atmospheric pressure.

[0008] In some embodiments of the collection device, the second light-transmissive wall represents an open cylindrical prism including a collecting face, a directing face, and an intake opening, the collecting face being substantially parallel to the first face, the directing face being substantially perpendicular to the first face and connected to the collecting face on the first side and defining the collecting face on a second side opposite the first side, the intake opening being substantially parallel to the first face. In some such embodiments, the plurality of fluid outlets are included in the collecting face having a flow path substantially perpendicular to the first face, or the plurality of fluid outlets are included in the directing face. In some such embodiments, the guide surface includes a first portion and a second portion, where the first portion is proximal to the collection surface and distal to the intake opening relative to the second portion, includes all of the plurality of fluid outlets included in the guide surface, and the second portion is distal to the collection surface and proximal to the intake opening relative to the first portion. In some such embodiments, the first portion includes a first percentage of the guide surface, and the second portion includes a second percentage of the guide surface that is greater than the first percentage. In some embodiments, the plurality of fluid outlets have flow paths substantially parallel to the first surface and are substantially parallel to each other, or the plurality of fluid outlets have flow paths substantially parallel to the first surface and are radially oriented relative to the guide surface.

[0009] In some embodiments of the collection device, the solids filter includes a first section mated to a second section, where the first section and the second section each define one half of an open cylindrical prism. In some such embodiments, the lid defines a first through-hole non-concentrically with respect to a central axis of the fluid collector, the lid is substantially perpendicular to the first surface, the first surface positions the solids filter closer to a portion of the first light-transmissive wall, and the lid further includes a port alignment feature configured to engage a lip defined about the inlet opening and orient a mating line where the first section contacts the second section with respect to a portion of the fluid collector.

[0010] In some embodiments of the collection device, the lid is secured to the fluid collector via a plurality of twist locks, each twist lock disposed a predetermined arc distance counterclockwise from a first adjacent twist lock and a predetermined arc distance clockwise from a second adjacent twist lock. In some such embodiments, each twist lock of the plurality of twist locks includes a tab, a ramp, and a catchment, the tab defined on the lid at an outer periphery of the first light-transmissive wall, the ramp defined on the lid configured to be captured on the ramp and contact to urge the lid closer to the fluid collector when the lid is rotated in a first direction relative to the fluid collector, and the catchment defined on the lid configured to be captured on the ramp and capture the tab after the lid has rotated a first amount in the first direction relative to the fluid collector, thereby preventing further rotation of the lid in the first direction or in a second direction opposite the first direction relative to the fluid collector. In some such embodiments, the tab includes a first magnet and the catchment includes a second magnet, where the first magnet and the second magnet are configured to magnetically attract each other when the tab is captured in the catchment.

[0011] In some embodiments of the collection device, the collection device further includes a first compressible sealing gasket and a second compressible sealing gasket, the first compressible sealing gasket included in the lid, oriented concentrically with a central axis substantially perpendicular to the first face when the lid selectively engages the fluid collector, and interfacing with a first mating surface of the fluid collector, and the second compressible sealing gasket included in the fluid collector, oriented concentrically with the central axis, and interfacing with a second mating surface of the lid when the lid selectively engages the fluid collector. In some such embodiments, the first compressible sealing gasket and the first mating surface are configured to engage with one another when the lid is attached to the fluid collector, and wherein the second compressible sealing gasket and the second mating surface are configured not to engage with one another when the lid is attached to the fluid collector until a threshold negative pressure is provided to the fluid containment region. In some such embodiments, the outer radius of the second compressible sealing gasket is smaller than the inner radius of the first compressible sealing gasket. In some such embodiments, the first mating surface is located proximal to the first face than the second mating surface.

[0012] In some embodiments of the collection device, the lid is light transmissive.

[0013] In some implementations of the collection device, the fluid collector includes a scale that corresponds to a known volume of the fluid containment region at a known height relative to a base of the fluid collector opposite the opening.

[0014] One embodiment of the present disclosure is a filter including a collection surface having a circumference, a guide surface made of an optically transparent material, and a plurality of fluid outlets, the guide surface connected to the collection surface around the circumference at a first surface and defining an intake opening at a second surface substantially parallel to the first surface, the plurality of fluid outlets defined through at least one of the collection surface and a first portion of the guide surface, the first portion of the guide surface being proximal to the first surface and distal to the second surface, wherein the second portion of the guide surface being proximal to the second surface and distal to the first surface, and configured to guide fluid to the first portion and to the collection surface.

[0015] In some embodiments of the filter, the filter includes a first section mating with a second section, where the first section includes half the collection surface and half the guide surface. In some such embodiments, the first section defines a number, orientation, or pattern of fluid outlets of the plurality of fluid outlets that is different than the second section. In some such embodiments, the filter further includes a lip that surrounds the guide surface opposite the collection surface, has a larger circumference than the collection surface, and defines a filter alignment feature that interfaces with an intake port in the lid to orient the filter relative to the lid.

[0016] In one embodiment of the present disclosure, there is provided a collection device including a lid and a fluid collector, the lid including a plurality of female twist lock engagement features and the fluid collector including a plurality of male twist lock engagement features corresponding to the plurality of female twist lock engagement features, wherein each pair of male and female twist lock engagement features includes a tab, a ramp, and a catchment, the tab being defined on an outer periphery of the fluid collector, the ramp being defined on the lid and configured to capture the tab on the ramp and push the lid into closer contact with the fluid collector when the lid is rotated in a first direction relative to the fluid collector, and the catchment being defined on the lid and configured to capture the tab on the ramp and capture the tab after the lid has rotated a first amount in the first direction relative to the fluid collector and thereafter prevent the lid from further rotating relative to the fluid collector, either in the first direction or in a second direction opposite the first direction.

[0017] In some embodiments of the collection device, the tabs are positioned a predetermined arc distance counterclockwise from a first adjacent tab and a predetermined arc distance clockwise from a second adjacent tab. In some such embodiments, the tabs include a first magnet and the catchment includes a second magnet, where the first magnet and the second magnet are configured to magnetically attract each other when the tabs are captured in the catchment. In some such embodiments, the lid includes an intake port defining a first through hole, and the collection device further includes a solids filter, an intake tubing, and a cap, the solids filter defining a plurality of fluid outlets and configured to selectively interface with the intake port, the plurality of fluid outlets being disposed through the first through hole and within a fluid containment area defined between the lid and the fluid collector, and the cap configured to secure the solids filter within the first through hole and secure the intake tubing within the solids filter via a one-way valve. In some such embodiments, the fluid collector and solids filter are light transmissive.

[0018] In some embodiments of the collection device, the collection device further includes a first gasket and a second gasket, the first gasket being included on the lid and oriented to interface with a first mating surface of the fluid collector when the lid selectively engages with the fluid collector, and the second gasket being included on the fluid collector and oriented to interface with a second mating surface of the lid when the lid selectively engages with the fluid collector.

[0019] One embodiment of the present disclosure is a collection device including a lid and a fluid collector, the lid including a first gasket and a first mating surface, the first gasket and the first mating surface oriented concentrically about a central axis, and the fluid collector including a second gasket and a second mating surface, the second gasket and the second mating surface oriented concentrically about the central axis, wherein the second gasket is positioned to engage with the first mating surface and the second mating surface is positioned to engage with the first gasket when the lid selectively engages with the fluid collector.

[0020] In some embodiments of the collection device, the first gasket and the first mating surface are configured to engage with each other when the lid is attached to the fluid collector, and wherein the second gasket and the second mating surface are configured not to engage with each other until a threshold negative pressure is supplied to the fluid containment region when the lid is attached to the fluid collector.

[0021] In some embodiments of the collection device, the outer radius of the second compressible sealing gasket is smaller than the inner radius of the first compressible sealing gasket.

[0022] In some embodiments of the collection device, the lid includes an intake port, the intake port defining a first through hole, the collection device further includes a solids filter, an intake tubing, and a cap, the solids filter defining a plurality of fluid outlets and configured to selectively interface with the intake port, the plurality of fluid outlets disposed through the first through hole and within a fluid containment area defined between the lid and the fluid collector, and the cap configured to secure the solids filter within the first through hole and secure the intake tubing within the solids filter via a one-way valve. In some such embodiments, the fluid collector and the solids filter are optically transparent.

[0023] One embodiment of the present disclosure is a collection device including a fluid collector, a lid, and a solid filter, the fluid collector having a base, a first light-transmissive wall attached to the base, and an opening on a first surface, the lid having a first engagement interface, and in a lid-engaged configuration, the first engagement interface of the lid engages with the fluid collector to seal the opening and form a fluid containment area, wherein the lid has a first through hole, and the solid filter has a collection surface and a second light-transmissive wall attached to the collection surface and includes a plurality of fluid outlets, the solid filter further including a second engagement interface, and in a solid filter-engaged configuration, the second engagement interface of the solid filter engages with the first through hole such that the plurality of fluid outlets are within the fluid containment area.

[0024] In some embodiments of the collection device, the collection device further includes a cap and an inlet tubing, the cap having a third engagement interface, where in the cap engaged configuration, the third engagement interface of the cap engages with the solids filter and the inlet tubing is attached to the cap, where the inlet tubing is in fluid communication with the cap and the solids filter. In some embodiments, the lid further includes a second through hole and further includes vacuum tubing, the vacuum tubing secured to the second through hole and applying a negative pressure in the fluid containment region and drawing fluid through the inlet tubing into the fluid containment region. In some embodiments, the collection device further includes a return filter, the return filter disposed in the fluid containment region and connected to the second through hole. In some embodiments, the collection device further includes a pressure film disposed within the fluid containment region, where the pressure film exhibits a first color at a first pressure within the body containment region and where, in an operational mode, at a second pressure within the fluid containment region responsive to a negative pressure applied by the negative pressure source, the pressure film exhibits a second color different from the first color. In some embodiments, the lid extends a first distance from the first surface, the pressure film is disposed a second distance from the first surface, and the plurality of fluid outlets are disposed at least a third distance from the first surface, where the first distance, the second distance, and the third distance are measured perpendicularly from the first surface, and where the first distance is less than the second distance and the third distance is greater than the second distance.

[0025] In some embodiments of the collection device, the negative pressure is selected from the group consisting of 1 to 5 pounds per square inch (PSI) below the current atmospheric pressure, 5 PSI below the current atmospheric pressure, 5 to 10 PSI below the current atmospheric pressure, 10 PSI below the current atmospheric pressure, 10 to 15 PSI below the current atmospheric pressure, and up to 15 PSI below the current atmospheric pressure.

[0026] In some embodiments of the collection device, the solid filter has an intake opening on the opposite side of the second light-transmitting wall from the collection surface, where the intake opening and the collection surface are substantially parallel to the first surface when the solid filter engages the first through-hole. In some embodiments, the plurality of fluid outlets are included in the collection surface having a flow path substantially perpendicular to the first surface, or the plurality of fluid outlets are included in the second light-transmitting wall. In some embodiments, the second light-transmitting wall includes a first portion and a second portion, where the first portion is closer to the collection surface and further from the intake opening than the second portion, and includes all of the plurality of fluid outlets included in the induction surface, where the second portion is further from the collection surface and closer to the intake opening than the first portion. In some embodiments, the first portion includes a first percentage of the second light-transmitting wall, and the second portion includes a second percentage of the second light-transmitting wall that is greater than the first percentage. In some embodiments, the plurality of fluid outlets have flow paths substantially parallel to the first surface and are substantially parallel to each other or substantially parallel to the first surface and are radially oriented relative to the second light-transmitting wall. In some embodiments, the solids filter includes a first section mating with a second section, where each of the first section and the second section defines one half of the solids filter. In some embodiments, when the lid engages with the fluid collector, the first through-hole is non-concentrically positioned relative to a central axis of the fluid collector, and when the solids filter also engages with the lid, the second engagement interface includes a lip defined around the intake opening and orients a mating line where the first section contacts the second section relative to the one portion of the fluid collector.

[0027] In some embodiments, the first engagement interface includes a plurality of twist locks, each twist lock disposed a predetermined arc distance counterclockwise from a first adjacent twist lock and a predetermined arc distance clockwise from a second adjacent twist lock. In some embodiments, each twist lock of the plurality of twist locks includes a tab, a ramp, and a catchment, the tab included on an outer periphery of the first light-transmissive wall, the ramp included on the lid, the tab captured on the ramp, when the lid rotates in a first direction relative to the fluid collector, the ramp urges the lid closer to the fluid collector, and the catchment included on the lid, the tab captured on the ramp, when the twist lock is in a first state after the lid rotates a first amount in the first direction relative to the fluid collector, where when the twist lock is in the first state, the catchment prevents further rotation of the lid relative to the fluid collector in either the first direction or a second direction opposite the first direction. In some embodiments, the tab includes a first magnet and the catchment includes a second magnet, where the first magnet and the second magnet have polarities and strengths that magnetically attract each other when the tab is captured in the catchment.

[0028] In some embodiments, the collection device further includes a first compressible sealing gasket and a second compressible sealing gasket, the first compressible sealing gasket included in the lid and oriented concentrically with a central axis substantially perpendicular to the first face when the lid is selectively engaged with the fluid collector to interface with a first mating surface of the fluid collector, and the second compressible sealing gasket included in the fluid collector and oriented concentrically with the central axis when the lid is selectively engaged with the fluid collector to interface with a second mating surface of the lid. In some embodiments, the first compressible sealing gasket and the first mating surface engage with each other when the lid is attached to the fluid collector, and the second compressible sealing gasket and the second mating surface do not engage with each other when the lid is attached to the fluid collector until a threshold negative pressure is provided to the fluid containment region. In some embodiments, an outer radius of the second compressible sealing gasket is equal to or less than an inner diameter of the first compressible sealing gasket. In some embodiments, the first mating surface is located closer to the first face than the second mating surface.

[0029] One embodiment of the present disclosure is a collection device comprising a pressure containment means, a solids filtration means, a first fluid communication means, and a second fluid communication means, the pressure containment means having a fluid containment area, at least a portion of the pressure containment means being optically transparent, the solids filtration means being disposed within the fluid containment area, the solids filtration means being optically transparent, the first fluid communication means being connected to the pressure containment means and isolated from the fluid containment area via the solids filtration means, and the second fluid communication means being connected to the pressure containment means and a negative pressure source to provide negative pressure to the fluid containment area and draw fluid through the first fluid communication means, through the solids filtration means, and into the fluid containment area.

[0030] In some embodiments, the collection device further includes an aerosol filtration means disposed within the fluid containment region and connected to the second fluid communication means, and configured to reduce fluid intake from the fluid containment region to the second fluid communication means when negative pressure is applied. In some embodiments, the solids filtration means is held within the fluid containment region via an engagement feature that interfaces with a first through hole in a lid of the pressure containment means, where the first through hole is non-concentrically disposed with a central axis of the pressure containment means, causing the solids filtration means to be off-center relative to the central axis. In some embodiments, the pressure containment means includes a lid and a fluid collector, and has a first sealing means and a second sealing means.

[0031] In some embodiments, the lid includes a plurality of first engagement means and the fluid collector includes a plurality of second engagement means, and when in contact with the fluid collector to seal the pressure containment means via the first sealing means, the plurality of second engagement means each engages with a corresponding first engagement means of the plurality of first engagement means via a downward force and a rotational force in a first direction applied to the lid. In some embodiments, the second sealing means is not engaged until negative pressure is applied to the pressure containment means via a negative pressure source.

[0032] In some embodiments, each first engagement means of the plurality of first engagement means includes a magnet, and a catchment included in each second engagement means that captures the corresponding first engagement means when the pressure containment means is sealed includes a ferromagnetic inclusion for magnetically interfacing with the magnet of the corresponding first engagement means. In some embodiments, each second engagement means of the plurality of second engagement means includes a magnet in a catchment that captures the corresponding first engagement means when the pressure containment means is sealed, and each first engagement means of the plurality of first engagement means includes a ferromagnetic inclusion for magnetically interfacing with the magnet of the corresponding second engagement means when the pressure containment means is sealed. In some embodiments, when the pressure containment means is sealed to magnetically interface with the first magnet of the corresponding first engagement means, each first engagement means of the plurality of first engagement means includes a first magnet of a first polarity and each second engagement means of the plurality of second engagement means includes a second magnet of a second polarity in a catchment that captures the corresponding first engagement means.

[0033] In some embodiments, the collection device further comprises a pressure measuring means, the pressure measuring means being disposed within the fluid containment region and visible from outside the fluid containment region.

[0034] One embodiment of the disclosure is a method that includes attaching a lid to a fluid collector to form a fluid containment area having an airtight seal between the lid and the fluid collector, securing a solids filter through the lid to the fluid containment area, forming fluid communication between a negative pressure source and the fluid containment area and between the fluid containment area and a filtration target, applying negative pressure through the fluid communication to draw fluid from the filtration target through the solids filter and into the fluid containment area, and releasing the negative pressure from the fluid communication in response to a collection criterion being reached.

[0035] In some embodiments, the collection criterion is reached in response to detecting the presence of solids in the solids filter, where the collection criterion is determined to be reached by visual inspection through a light-transmissive wall of the fluid collector and a light-transmissive wall of the solids filter. In some embodiments, the collection criterion is reached in response to a change in color of a pressure film disposed in the fluid containment region, where the collection criterion is determined to be reached by visual inspection through a light-transmissive wall of the fluid collector.

[0036] In some embodiments, attaching the lid includes rotating the lid relative to the fluid collector while applying a downward force that engages a number of tabs included on the fluid collector with a corresponding number of acceptors included on the lid, where the airtight seal is formed by a first gasket included on the lid and interfacing with a first mating surface of the fluid collector, and applying negative pressure further includes complementing the airtight seal by drawing the lid onto the fluid collector via negative pressure to engage a second gasket included on the fluid collector that interfaces with a second mating surface of the lid.

[0037] In some embodiments, the method further includes assembling the solids filter from a first section and a second section prior to penetrating the lid and securing the solids filter to the fluid containment area, where the first section is selected based on a first number, a first location, and a first caliber of a first plurality of fluid outlets included in the first section, and the second section is selected based on a second number, a second location, and a second caliber of a second plurality of fluid outlets included in the second section. [Brief description of the drawings]

[0038] The accompanying drawings illustrate various elements of one or more embodiments of the present disclosure and are not to be considered as limiting the scope of the present disclosure.

[0039] In the drawings, some components may not be shown to scale relative to other elements to more clearly show detail, and, wherever possible, like reference numerals are used throughout the figures to refer to like elements.

[0040] It is contemplated that components and features of one embodiment may be beneficially incorporated in other embodiments without further description or illustration. For example, the drawings may show alternative views and times, and various components shown in a first figure may be omitted from an illustration shown in a second figure without negating the inclusion of those elements in the embodiment shown or discussed in connection with the second figure.

[0041] [Figure 1] FIG. 1 shows an isometric view of an assembled collection device according to an embodiment of the present disclosure. [Diagram 2] FIG. 2 is an isometric exploded view of a collection device according to an embodiment of the present disclosure. [Diagram 3] FIG. 3 illustrates an isometric exploded view of a solids filter according to an embodiment of the present disclosure. [Figure 4A] FIG. 4A is a cross-sectional isometric view of one of the solids filters according to an embodiment of the present disclosure, showing a fluid outlet defined therein. [Figure 4B] FIG. 4B is an isometric view of a cross section of one of the solids filters according to an embodiment of the present disclosure, showing a fluid outlet defined therein. [Figure 4C] FIG. 4C is an isometric view of a cross section of one of the solids filters according to an embodiment of the present disclosure, showing a fluid outlet defined therein. [Figure 4D] FIG. 4D is an isometric view of a cross section of a solids filter according to an embodiment of the present disclosure, showing a fluid outlet defined therein. [Figure 5A] FIG. 5A illustrates fluid flow through a solids filter according to an embodiment of the present disclosure. [Figure 5B] FIG. 5B illustrates fluid flow through a solids filter according to an embodiment of the present disclosure. [Figure 5C]FIG. 5C illustrates fluid flow through a solids filter according to an embodiment of the present disclosure. [Figure 5D] FIG. 5D illustrates fluid flow through a solids filter according to an embodiment of the present disclosure. [Figure 6A] FIG. 6A is an isometric view of a lid interfacing to a solids filter according to an embodiment of the present disclosure. [Figure 6B] FIG. 6B is an isometric view of a lid interfacing to a solids filter according to an embodiment of the present disclosure. [Figure 7] FIG. 7 illustrates an isometric exploded view of an assembly for a gasket included in a collection device according to an embodiment of the present disclosure. [Figure 8] FIG. 8 is an isometric view of a lid attached to a fluid collector according to an embodiment of the present disclosure. [Figure 9] FIG. 9 illustrates a time course of the twist-lock engagement between the lid and the fluid collector according to an embodiment of the present disclosure. [Figure 10A] FIG. 10A shows the time course of a gasket sealing a collection device according to an embodiment of the present disclosure. [Figure 10B] FIG. 10B shows the time course of a gasket sealing a collection device according to an embodiment of the present disclosure. [Figure 11A] FIG. 11A is a cross-sectional view of a collection device including a pressure film within a fluid containment region according to an embodiment of the present disclosure. [Figure 11B] FIG. 11B is a cross-sectional view of a collection device including a pressure film within a fluid containment region according to an embodiment of the present disclosure. [Figure 12] FIG. 12 is a flow chart of a method of assembling and using a collection device according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0042] Detailed Description of the Invention The present disclosure relates generally to improved aspirate collection devices. The improvements described herein provide a variety of advantages, including, but not limited to, easier use of the collection device, easier analysis of fluids and solids collected by the collection device, stronger and more reliable sealing of the collection device, greater pressure differential tolerance of the collection device, and improved or simplified manufacturing techniques therefor.

[0043] The collection device may include various components made from optically transparent rigid materials, allowing a user to visualize the various solids collected by the solids filter during operation, providing an unobstructed view of fluid flow through the solids filter, allowing the various elements to be presented in known and consistent positions within the collection device, and facilitating inspection of the collection device for proper assembly, material integrity, and unintended changes in pressure.

[0044] The collection device may also include a two-gasket sealing design which, in cooperation with an improved twist-lock fastening mechanism, reduces the force required to manually seal the collection device while ensuring that when active suction is removed or suspended, the collection device remains sealed with greater force to maintain a seal for a longer period with a greater pressure differential.

[0045] 1 shows an isometric view of a collection device 100 when assembled according to an embodiment of the present disclosure. Collection device 100 includes a fluid collector 110 covered by a lid 120 through which a solids filter 130 is secured by a cap 160 (shown in FIGS. 3, 5C-5D, and 6A-6B), a return filter 170, and various tubing 190a-b are attached for drawing fluid into the collection device via an applied vacuum.

[0046] The fluid collector 110 includes a wall 112 joined on a first side to a base 116 and defining on a second side (opposite the first side) an opening 114 (shown in FIG. 2) that is sealed when a lid 120 engages the fluid collector 110. Although illustrated in FIG. 1 with a substantially cylindrical form factor, in various embodiments the fluid collector 110 may take on other shapes, including, but not limited to, cones, pyramids, and other shapes, and combinations thereof (e.g., similar to an Erlenmeyer flask), and combinations thereof. In some such embodiments, the wall 112 may encompass or otherwise reduce or omit the base 116. In some such embodiments, where the base 116 is omitted, the fluid collector 110 may be held upright by a support structure (e.g., supported by a ring stand where the conical wall 112 is lowered into the ring until the wall 112 contacts the ring support structure to hold the fluid collector 110 in place). In various embodiments, the fluid collector 110 is made of a permeable material such as, but not limited to, plastic or glass.

[0047] As described herein, the term "optically transparent" is intended to include the term "transparent," and both describe a material that allows light (in at least one band of visible or near-visible wavelengths) to pass substantially through the material, with or without scattering by internal or external interfacing connections. Thus, when a component is described herein as optically transparent, a person (such as a physician, operator, or user) can see through the associated material. In various embodiments, an optically transparent material allows between X and 100 percent of light to pass through the material (the remainder is absorbed or reflected), where X can be any number that allows a person to see through the optically transparent material, for example, between 50 and 99. In various embodiments, the wavelengths of light for which a material is determined to be optically transparent can include light between at least one of the following bands: approximately 310 to 1100 nanometers (nm), 380 to 750 nm, 700 to 600 nm, 600 to 580 nm, 580 to 550 nm, 550 to 475 nm, 475 to 450 nm, 450 to 400 nm, and combinations thereof.

[0048] The lid 120 is configured to selectively interface with the fluid collector 110 and seal the opening 114 to define a fluid containment region 180 for collecting various fluids therein. To introduce fluids into the fluid containment region 180, the lid 120 includes an aspiration opening 122 that defines a first through hole 124 through the lid 120 that is substantially parallel to the plane in which the opening 114 is defined. To apply suction (via vacuum or other negative pressure) to the fluid containment region 180 and draw fluids through the first through hole 124, the lid 120 includes an aspiration port 126 that defines a second through hole 128 through the lid 120, which may also be substantially parallel to the plane in which the opening 114 is defined. In various embodiments, the lid 120 is made of a light-transmitting plastic or glass, which may be the same or a different material as the fluid collector 110, while in other embodiments it may be made of an opaque material.

[0049] The inlet port 122 is configured to hold the solids filter 130 in place through the first through hole 124 and into the fluid containment region 180. The cap 160 is configured to engage the inlet port 122 to hold the solids filter 130 in place and to hold the inlet tubing 190a in place to connect a fluid source (e.g., a vascular access device, aspiration catheter, stent, microcatheter, port, or other patient interface device) to the collection device 100. In various embodiments, the cap 160 is held in place over the solids filter 130 via a pressure seal, but may also be held in place via adhesive, a twist lock mechanism, a combination thereof, or other attachment mechanism. In various embodiments, the inlet port 122 includes a one-way or adjustable valve to allow an external pump or vacuum source (not shown) to apply suction to the fluid containment region 180 and to seal and maintain pressure within the fluid containment region 180 when suction is no longer applied.

[0050] The suction port 126 is configured to hold the vacuum tubing 190b in place for connecting an external pump or vacuum source (not shown) to the collection device 100. In various embodiments, the suction port 126 includes a one-way valve to allow suction to be applied to the fluid containment region 180 when an external pump or vacuum source (not shown) is activated and connected through the vacuum tubing 190b, and to allow sealing of the second through-hole 128 when suction is no longer being applied. Additionally, a return filter 170 may be connected to the second through-hole 128 in the fluid containment region 180 to reduce the amount or likelihood of fluid (and any contaminants therein) being drawn into the vacuum tubing 190b. In various embodiments, the return filter 170 is made of a foam or other porous material configured to allow movement of air from the fluid containment region 180 through the vacuum tubing 190b, but to prevent bodily fluids or aerosolized contaminants (e.g., bacteria, viruses) from entering the vacuum tubing 190b.

[0051] During operation of the collection device 100, the subject to be filtered (e.g., a blood vessel) is placed in fluid communication with a vacuum source via the intake tubing 190a and the vacuum tubing 190b, and negative pressure acting on the fluid draws the fluid, and any solids carried therein, through the solids filter 130 via the intake tubing 190a and into the fluid containment region 180. The solids filter 130 (shown in detail in FIGS. 3-5D ) is configured to selectively interface with the intake port 12 and to be inserted through the first through-holes 124 to a predetermined depth into the fluid containment region 180. The solids filter 130 includes a plurality of fluid outlets located at a distal end relative to where the solids filter 130 interfaces with the intake port 122. In various embodiments, the solids filter 130 may be detached or interfaced from the intake port 122 (after removing the cap 160) to allow for recovery or more detailed analysis of any solids captured from the fluid entering the fluid containment area 180 via the intake tubing 190a and the solids filter 130.

[0052] In various embodiments, the solids filter 130 is made of optically transparent plastic or glass, which may be the same material or a different material used to construct the fluid collector 110. Thus, while the solids filter 130 is placed in the fluid containment area 180 and while the collection device 100 is actively receiving fluid, a user can visually detect whether the solids filter 130 has collected solids. The ability to visually detect solids improves the ease of use and functionality of the collection device 100, as a user (e.g., physician, operator) can visually inspect the solids filter 130 for any collected contents, since by not releasing the vacuum or removing the lid 120, a negative pressure is maintained within the fluid containment area 180, maintaining a sterile environment and reducing procedure time. Unlike opaque or less visible filters that require the user to pause the process to manually inspect the filter for solids, a light-transmitting or transparent solids filter 130 may allow the user to visually assess the contents midway through the process without releasing the vacuum or disassembling the collection device 100. Additionally, by constructing the solids filter 130 from a rigid material, rather than a woven fabric or mesh, any solids collected by the solids filter 130 will remain at a consistent height within the solids filter 130 and will not distort the shape of the solids filter 130 during continued use. Exemplary features of the solids filter 130 are discussed in more detail with reference to Figures 3-6.

[0053] A first gasket 140 and a second gasket 150 are placed between the fluid collector 110 and the lid 120 to ensure that the fluid collector 110 and the lid 120 are tightly sealed and to maintain the seal once formed. Each of the first gasket 140 and the second gasket 150 is made of a compressible material, such as rubber or a rubberized plastic, so that when pressure is applied to the first gasket 140 and the second gasket 150, they deform to ensure intimate contact between the two surfaces. Additional gaskets (not shown) may be used to provide additional sealing properties. Multiple gaskets (such as the first gasket 140 and the second gasket 150) may allow the collection device 100 to maintain a vacuum seal for longer periods of time, at higher pressure differentials, and in harsh environments, reducing the likelihood that a user will need to spend time during a procedure troubleshooting issues such as air leaks or inconsistent pressure. In various embodiments, pressure may be maintained on the first gasket 140 and the second gasket 150 via various locking or connecting mechanisms included on the fluid collector 110 and the lid 120. Exemplary features of how the fluid collector 110 and the lid 120 interface with one another and how a seal is maintained by the first gasket 140 and the second gasket 150 are described in more detail with reference to Figures 7-10B.

[0054] 2 shows an isometric exploded view of a collection device 100 according to an embodiment of the present disclosure. The various components of the collection device 100 are assembled relative to a central axis 210 and an opening surface 220 defined by the opening 114 of the fluid collector 110 that the lid 120 seals against. Because both the fluid collector 110 and the lid 120 are substantially circular in cross-section (at least in the area used to mate the two components together), the lid 120 may seal the opening 114 by rotating relative to the fluid collector 110 about the central axis 210 to engage various fastening features, such as a twist lock mechanism and mating gasket / mating surfaces, which will be described in further detail with reference to FIGS. 7-10B.

[0055] Although the collection device 100 may be held in a variety of orientations, for ease of understanding, the present disclosure uses relative positional terms (e.g., upward, upward, downward, downward, higher, lower, top, bottom) in a direction oriented along the central axis 210 (e.g., the Z direction) using the base 116 of the fluid collector 110 as a reference point, where components closer to the base 116 are considered to be "below" components further from the base 116 and components further from the base 116 are considered to be "above" components closer to the base 116. Similarly, unless otherwise noted, rotation of one element of the collection device 100 relative to another element of the collection device 100 should be understood to be substantially a rotation about the central axis 210. Additionally, unless otherwise noted, relative terms such as "inner" and "outer" should be understood to refer to the central axis 210 such that components closer to the central axis 210 are considered to be "inner" elements relative to components further from the central axis 210, and components further from the central axis 210 are considered to be "outer" elements relative to elements closer to the central axis 210.

[0056] In various embodiments, the substantially circular cross-sectional area may taper toward the opening plane 220, with one or more of the fluid collector 110 and the lid 120 taper or flaring with increasing distance from the opening plane 220, and having different cross-sectional areas across the height of their respective components.

[0057] The various fixation features are generally arranged concentrically or radially about the central axis 210, although the various components may be offset or otherwise arranged off-axis with respect to the central axis 210. For example, the suction port 122 defined in the lid 120, which defines the suction through hole 124 by which the solids filter 130 is disposed in the fluid containment region 180, may be defined on a suction axis 230 that is substantially parallel to the central axis 210 at a first distance from the central axis 210. Similarly, the suction port 126 defined in the lid 120, which defines the suction through hole 128 by which the suction or negative pressure is applied to the fluid containment region 180, may be defined on a substantially parallel suction axis 240 by a second distance from the central axis 210.

[0058] In various embodiments, the first and second distances (from central axis 210) are equal, with intake axis 230 and suction axis 240 defined at a common radial location from central axis 210. In other embodiments, the first and second distances are not equal, which may improve the stability of the assembled collection device 100 given the heavier weight of cap 160 and solids filter 130 compared to return filter 170 and the different forces exerted by fluid entering via intake port 122 and air drawn by suction port 126.

[0059] In various embodiments, by positioning the intake port 122 off-axis relative to the central axis 210, the solids filter 130 is positioned adjacent to a section of the wall 112 of the fluid collector 110, thereby improving visibility when viewing the solids filter 130 (and the solids captured therein) from that section of the wall 112, as compared to a solids filter 130 that is aligned concentrically with the central axis 210.

[0060] 3 shows an isometric exploded view of a solids filter 130 according to an embodiment of the present disclosure. In various embodiments, the solids filter 130 is made of two sections 310a-b (generally or collectively, sections 310) that fit together via a plurality of locking tabs 320a-d (generally or collectively, locking tabs 320) that correspond to a plurality of locking slots 325a-d (generally or collectively, locking slots 325) and a plurality of alignment tabs 330a-d (generally or collectively, alignment tabs 330) that correspond to a plurality of alignment slots 335a-d (generally or collectively, alignment slots 335). In various embodiments, to complement the locking tabs / slots 320 / 325 and alignment tabs / slots 330 / 335 and to enhance the seal between the two sections 310a-b, the mating surfaces between the two sections 310a-b can be further reinforced with adhesives, resins, etc. Although the two sections 310a-b are illustrated as being identical, in various embodiments, an operator or designer can select sections 310 having different layouts of fluid outlets 360 (e.g., as described with reference to Figures 4A-4D) that affect fluid flow when the collection device 100 is in operation.

[0061] In various embodiments, it is advantageous for the two sections 310a-b to be identical for ease of manufacturing, reduction in molds, and minimization of the number of unique parts, simplifying assembly and facilitating replacement of lost, missing, or incorrectly sized parts.

[0062] In various embodiments, the locking tab 320 includes a distal end having an oversized chamfered tip configured to engage with a portion of the other section 310 that defines a corresponding locking slot 325 to define a cantilever snap joint, thereby drawing the two sections 310 into contact with one another.

[0063] In various embodiments, the alignment tab 330 includes a protrusion configured to fit into a recess defined in the material of the other section 310 by the alignment slot 335 to engage the two sections 310 through pressure and friction, or to help prevent twisting from causing the sections 310 to become misaligned.

[0064] Each section 310 defines half of the induction surface 340 of the solids filter 130 and half of the collection surface 350 of the solids filter 130. In various embodiments, one or both of the induction surface 340 and the collection surface 350 include a plurality of fluid outlets 360, which are discussed in more detail with reference to Figures 4A-4D.

[0065] In embodiments that define fluid outlets 360 via the guide surface 340, the guide surface 340 can be understood to have two portions 370a-b based on where the fluid outlets 360 are defined. When viewed from the side of the guide surface 340 connected to the collection surface 350, a first portion 370a of the guide surface 340 includes the fluid outlets 360, and at a height where no fluid outlets 360 are defined at all, a second portion 370b is defined. In other words, the first portion 370a is defined closer to the collection surface 350 and further from the intake opening 390 (relative to the second portion 370b) and includes a plurality of fluid outlets 360 defined in the guide surface 340 and in any area of ​​the guide surface 340 adjacent to the collection surface 350, opposite the fluid outlets 360 defined in the guide surface 340. Similarly, second portion 370b (having fluid outlet 360) is defined further from collection surface 350 and closer to intake opening 390 (relative to first portion 370a), and includes any area of ​​guide surface 340 proximate intake opening 390 relative to fluid outlet 360 defined in guide surface 340. In another embodiment, multiple fluid outlets 360 may be disposed along the entire length of guide surface 340, substantially minimizing or eliminating second portion 370b. In a further embodiment (as shown in FIG. 4C), multiple fluid outlets 360 may be disposed only in collection surface 350, substantially eliminating first portion 370a.

[0066] In various embodiments, the number, orientation, and dimensions of the fluid outlets 360 may vary based on the intended flow rate of the fluid through the solids filter 130, the expected viscosity of the fluid, the desired size of the particulates or solids to be collected, and combinations thereof. Similarly, the percentage of the guide surface 340 defined as the first portion 370a or the second portion 370b may vary in different embodiments. By identifying where the first portion begins (or the second portion ends) relative to the inlet opening 390, the designer can control where the fluid enters the fluid containment area 180 and where the collected solids are retained. Furthermore, unlike woven or mesh filters that may deform during use or when solids are present, by using a rigid (and light-transmitting) material to contract the solids filter 130, the designer ensures that the collected solids are visible at a consistent location on the solids filter 130.

[0067] As shown, the locking tabs 320 and the locking slots 325 are defined only in the second portion 370b, while the alignment tabs 330 and the alignment slots 335 are defined in both the first portion 370a and the second portion 370b, however, in various embodiments, a designer may incorporate the locking tabs 320 and the locking slots 325 into the first portion 370a.

[0068] During operation of the collection device 100, fluid (and any solids carried therewith) enters the solids filter 130 via an intake opening 390 defined at the end of the guiding surface 340 opposite the collection surface 350. As shown, the optically permeable walls of the two mating sections 310 (e.g., the guiding surface 340) represent open cylindrical prisms, where the intake opening 390 defines a plane substantially parallel to the collection surface 350, bounded by a lip 380. As will be described in more detail with reference to Figures 6A and 6B, the lip 380 is of greater circumference than either the guiding surface 340 or the collection surface 350, and may include various alignment features configured to engage with the lid 120 to orient the solids filter 130.

[0069] Although illustrated as substantially circular in cross section, the solids filter 130 may be ovoid or other shapes, which may serve as an alignment feature using the relative shapes of the solids filter 130 and the intake port 122. Additionally, while illustrated as substantially circular, the collection surface 350 may be hemispherical, conical, or other shapes in various embodiments. Additionally or alternatively, the induction surface 340 may encompass, reduce, or omit the collection surface 350 when defining a conical solids filter 130.

[0070] 4A-4D show isometric views of one section 310 of the solid filter 130 and detail the fluid outlet 360 defined therein according to an embodiment of the present disclosure. FIG. 4A illustrates that the fluid outlet 360 can be defined on both the guiding surface 340 and the collection surface 350, allowing the solid filter 130 to discharge fluid from its sides and bottom during operation. FIG. 4B illustrates that the fluid outlet 360 can be defined only on the guiding surface 340, allowing the solid filter 130 to discharge fluid from its sides during operation. FIG. 4C illustrates that the fluid outlet 360 can be defined only on the collection surface 350, allowing the solid filter 130 to discharge fluid from its bottom during operation (allowing all of the guiding surface 340 to be considered as the second portion 370b). FIG. 4D illustrates that the fluid outlet 360 may be omitted in one section 310 that is intended to mate with another section 310 that includes the fluid outlet 360, thereby directing the outflow of fluid through one half of the solid filter 130 and providing the operator with an improved view within the solid filter 130 (e.g., unobstructed by refractive index differences due to the fluid outlet 360) or the ability to remove the solid filter 130 in an orientation that avoids or reduces leakage of fluid within the solid filter 130.

[0071] 5A-5D illustrate fluid flow through a solids filter 130 in accordance with an embodiment of the present disclosure. As shown, when the solids filter 130 is installed in an operational collection device 100, fluid 530 enters the solids filter 130 via the inlet openings 390 and exits the solids filter 130 (to the fluid containment area 180) via the fluid outlets 360. Depending on the number, presence, and orientation of the fluid outlets 360, as well as the flow rate of the fluid 530 entering the solids filter 130, the fluid 530 may be directed in different directions to improve an observer's ability to observe the various solids 540 captured in the solids filter 130.

[0072] As shown in the cross-sectional views of Figures 5A and 5B, the non-concentric (relative to the central axis 210) arrangement of the solids filter 130 locates the solids filter 130 close to one portion of the wall 112 of the fluid collector 110, which may be defined as the viewing wall 510a, and away from the other portion of the wall 112, which may be defined as the distal wall 510b.

[0073] 5A and 5B, a portion of the observation wall 510a is shown, but the observation wall 510a may include various portions of the wall 112 that are within a predetermined proximity to the solids filter 130. When one or more of the fluid collector 110 and the solids filter 130 represent a generally circular, conical, frusto-conical, or other prism having one or more radii, the observation wall 510a may be defined as an internal point (or line) on an interior portion of the wall 112 that is closest to the exterior portion of the solids filter 130, and the area of ​​the wall 112 within a predetermined arc distance from the closest point (or line). For example, the observation wall 510a may include a section of the wall 112 that defines an arc of 30 degrees, 60 degrees, 90 degrees, 120 degrees, or other specified angle, centered on the closest point (or line) of the wall 112 to the solids filter 130. Additionally or alternatively, the observation wall 510a may represent a portion of the wall 112 that is within a threshold distance (eg, within X centimeters (cm)) of any portion of the solids filter 130.

[0074] Although the cross-sectional views shown in Figures 5A and 5B show a portion of the distal wall 510b opposite the depicted portion of the observation wall 510a, any portion of the wall 112 not designated as the observation wall 510a may be defined as the distal wall 510b.

[0075] 5A shows a cross-sectional view (e.g., in the ZX plane) in which a solids filter 130 disposed in the fluid containment region 180 of the collection device 100 is oriented to direct fluid 530 away from the viewing wall 510a (e.g., into or out of the page in the Y direction) via a fluid outlet 360 that defines the directing surface 430. When using a two-section structure for the solids filter 130 (see, e.g., FIG. 3), the mating line 520 between the two sections 310a-b may be presented toward the closest point (or line) between the wall 112 and the solids filter 130, directing the fluid 530 substantially perpendicular to the viewing plane via the fluid outlet 360 defined in the directing surface 340.

[0076] 5A, the first section 310a is visible, while the second section 310b (not shown) is obscured by the first section 310a, but both the first section 310a and the second section 310b are visible from the viewing plane through the viewing wall 510a. Thus, the mating line 520 between the first section 310a and the second section 310b is visible to an observer.

[0077] In various embodiments, by using the same sections 310 defining the fluid outlets 360 on the guide surface 340 (see, for example, FIG. 4A), the operator may guide the fluid 530 substantially evenly (e.g., both into the page and out of the page) with respect to the viewing plane. In other embodiments, by using sections 310 with different numbers, positions, and inner diameters of the fluid outlets 360, the operator may preferentially direct the fluid 530 in one direction with respect to the viewing plane (e.g., more into the page or more out of the page). For example, the operator may use one section 310 on the guide surface 340 that includes a fluid outlet 360 (see, for example, FIGS. 4A-4B) and one section on the guide surface 340 that does not include a fluid outlet 360 (see, for example, FIGS. 4C-4D) to direct the fluid 530 in one direction and not the other (e.g., only into the page or only out of the page).

[0078] 5A illustrates fluid 530 exiting solids filter 130 through leading surface 340 and collection surface 350, in various embodiments, an operator can select sections 310 of solids filter 130 to include or not include fluid outlets 360 in each leading surface 340 or collection surface 350. Thus, fluid 530 may flow through both leading surface 340 and collection surface 350, only through leading surface 340 (e.g., omitting fluid outlets 360 in collection surface 350), or only through collection surface 350 (e.g., omitting fluid outlets 360 in leading surface 340). Additionally or alternatively, depending on the flow rate of the fluid 530 entering and exiting the solid filter 130 and the relative elevation (e.g., proximity to the collection surface 350) of the first fluid outlet 360 defined in the directing surface 340, the solid filter 130 may initially discharge the fluid 530 via the collection surface 350 until the level of the fluid 530 within the solid filter 130 reaches the first fluid outlet 360 defined in the directing surface 340.

[0079] 5B illustrates that the solids filter 130 disposed in the fluid containment region 180 of the collection device 100 is oriented to direct the fluid 530 toward the depicted portion of the observation wall 510a (e.g., in the X direction) and the distal wall 510b via their fluid outlets 360 defined in the guiding surface 340. When using a two section construction for the solids filter 130 (see, e.g., FIG. 3), the line of engagement between the two sections 310a-b may be presented to direct the fluid 530 substantially perpendicularly away from the closest point (or line) between the wall 112 and the solids filter 130, via the fluid outlets 360 defined in the guiding surface 340, and toward the depicted portion of the observation wall 510a and the distal wall 510b.

[0080] Due to the orientation shown in Figure 5B, the first section 310a is visible through the viewing wall 510a, but the second section 310b may be hidden by the first section 310a. Thus, the mating line 520 between the first section 310a and the second section 310b may not be visible to the viewer, although it is visible in Figure 5B.

[0081] In various embodiments, by using the same sections 310 defining the fluid outlets 360 in the guide surface 340 (see, e.g., FIG. 4A), the operator may direct the fluid 530 substantially evenly with respect to the viewing plane (e.g., both toward and away from the viewing wall 510a). In other embodiments, by using sections 310 with different numbers, positions, and inner diameters of the fluid outlets 360, the operator may direct the fluid 530 preferentially toward or away from the viewing plane. For example, the operator may use one section 310 in the guide surface 340 that includes a fluid outlet 360 (see, e.g., FIGS. 4A-4B) and one section in the guide surface 340 that does not include a fluid outlet 360 (see, e.g., FIGS. 4C-4D) to direct the fluid 530 in one direction and not in another (e.g., only toward or only away from the viewing wall 510a).

[0082] 5B shows fluid 530 exiting solids filter 130 via leading surface 340 and collection surface 350, in various embodiments an operator can select sections 310 of solids filter 130 to include or not include fluid outlets 360 in each leading surface 340 or collection surface 350. Thus, fluid 530 may flow via both leading surface 340 and collection surface 350, only leading surface 340 (e.g., when fluid outlet 360 in collection surface 350 is omitted), or exclusively through collection surface 350 (e.g., when fluid outlet 360 in leading surface 340 is omitted). Additionally or alternatively, depending on the flow rates of the fluid 530 entering and exiting the solid filter 130 and the relative elevation of the first fluid outlet 360 defined in the directing surface 340 (e.g., proximate to the collection surface 350), the solid filter 130 may initially discharge the fluid 530 via the collection surface 350 until the level of the fluid 530 within the solid filter 130 reaches the first fluid outlet 360 defined in the directing surface 340.

[0083] FIG. 5C shows a first orientation of the fluid outlets 360 in the guide surface 340 that are substantially parallel to each other in an XY plane that is substantially parallel to the inlet opening 390 and the collection surface 350. FIG. 5D shows a second orientation of the fluid outlets 360 in the guide surface 340 that are radially oriented relative to the guide surface 340. In various embodiments, the guide surface 340 may include a parallel, radial, or both radial and parallel (at different elevations in the Z direction) orientation for the flow path for the fluid 530 through the fluid outlets 360. The various fluid outlets 360 may be formed as voids in an injection molding process (e.g., where the mold prevents material from flowing into the area that defines the fluid outlets 360), drilled or etched (by chemical or mechanical means) through the material of the section 310, or formed as areas where no material is deposited in a three-dimensional printing or additive manufacturing process. Thus, the size, shape, inner diameter, orientation, and pattern of the various fluid outlets 360 may be selected based on the desired flow characteristics and the manufacturing technique used to manufacture the section 310.

[0084] 6A and 6B are isometric views of the lid 120 interfacing with the solids filter 130, and FIG. 6B provides a detailed view of the intake port 122 shown in FIG. 6A, according to an embodiment of the present disclosure. As shown, the lip 380 of the solids filter 130 has a larger circumference than the rest of the solids filter 130 and engages the intake port 122 to position the solids filter 130 through the first through-hole 124. In various embodiments, the lip 380 can define one or more filter alignment features 610 for engaging with corresponding port alignment features 620 defined in the intake port 122. The filter alignment features 610 can include cutouts from the lip 380 configured to interface with extensions from the intake port 122 that define the port alignment features 620.

[0085] For example, the filter alignment feature 610 may define an area that is thinner than the remainder of the lip 380. A cantilevered clip (forming a corresponding port alignment feature 620) engages the filter alignment feature 610 to form a snap joint that aligns and holds the solids filter 130 in place relative to the viewing wall 510a (e.g., according to FIG. 5A or 5B). In various embodiments, the relative thickness of the lip 380 prevents the port alignment feature 620 from engaging the solids filter 130 in sections other than the reduced thickness filter alignment feature 610.

[0086] Similarly, a positively defined protrusion (e.g., a peg or tab) from the intake port 122 may engage with a perforation or cutout in the lip 380 to ensure a desired orientation of the solid filter 130 passing through the intake port 122. In other embodiments, a negatively defined cutout or inclusion in the intake port 122 may engage with a protrusion defined to protrude from the lip 380 to ensure a desired orientation of the solid filter 130 passing through the intake port 122. Additionally or alternatively, when the intake port 122 and solid filter 130 are defined to have a non-circular cross-section (e.g., oval, flattened circular, rectangular, etc.), the corresponding shapes of the solid filter 130 and intake port 122 can ensure a desired orientation of the solid filter 130 passing through the intake port 122.

[0087] 7 shows an isometric assembly view of an assembly of gaskets included in a collection device 100 according to an embodiment of the present disclosure. The lid 120 includes a first compressible sealing gasket 140 that is oriented concentrically with the lid 120 relative to a central axis 210, and the fluid collector 110 includes a second compressible sealing gasket 150 that is also oriented concentrically with the fluid collector 110 relative to the central axis 210. When the lid 120 is engaged with the fluid collector 110, each orients a corresponding gasket with the other such that a first mating surface 710 defining the fluid collector 110 interfaces with the first gasket 140, and a second mating surface 720 defined on the lid 120 is oriented to interface with the second gasket 150.

[0088] Each pair of first mating surface 710 / gasket 140 and second mating surface 720 / gasket 150 are configured to engage with one another when the lid 120 is attached to the fluid collector 110 such that pressure between the lid 120 and the fluid collector 110 compresses the gasket and forms a seal between the fluid containment region 180 and the external environment. To ensure that the pressure is sufficient to maintain the seal, the lid 120 includes a plurality of acceptors 740a-c (generally or collectively, acceptors 740) and the fluid collector 110 includes a corresponding plurality of tabs 730a-c (generally or collectively, tabs 730) forming a twist-lock interface, which will be discussed in more detail with reference to FIG. 9. Generally, the tabs 730 are male twist-lock engagement features while the acceptors 740 are female twist-lock engagement features that form a twist-lock pair when engaged with one another.

[0089] 7 shows three twistlock pairs of acceptors 740 and tabs 730, various embodiments may include more than three or less than two twistlock pairs of acceptors 740 and tabs 730. In some implementations, the various twistlock pairs are substantially evenly spaced around the circumference of the harvesting device 100, and while the three twistlock pairs shown are spaced approximately 120 degrees apart from one another, for N pairs, each twistlock pair is spaced approximately 360 / N degrees apart from each adjacent twistlock pair such that the twistlock pairs are spaced a given arcuate distance clockwise from the first adjacent twistlock pair and the same arcuate distance counterclockwise from the second adjacent twistlock pair.

[0090] In various embodiments, one twist-lock pair of acceptors 740 and tabs 730 includes one tab 730 that is larger than the other tab 730 and can only be received by one acceptor (e.g., because it is too large to be received by the other acceptor 740 or because it has a different shape), thereby ensuring a particular orientation of the lid 120 relative to the fluid collector 110. In various embodiments, each tab 730 is substantially identical to the other tabs 730 and each acceptor 740 is substantially identical to the other acceptors 740, allowing the lid 120 to selectively interface with the fluid collector 110 in a variety of rotational alignments.

[0091] The fluid collector 110 includes various graduations 750a-e (generally or collectively, graduations 750) to indicate the volume of charge collected by the fluid collector 110. In various embodiments, the graduations 750a-e may extend around the circumference of the fluid collector 110 or may be discretely positioned around the circumference of the fluid collector 110. When discretely positioned, the graduations 750 may be positioned relative to where the solids filter 130 is positioned within the fluid collector 110 based on the placement of the twist lock pair and the intake port 122. Although FIG. 7 illustrates five graduations 750a-e, various embodiments may include more or less than five graduations 750 associated with different volumes.

[0092] 8 shows an isometric view of a mechanism for selectively securing the lid 120 to the fluid collector 110 according to an embodiment of the present disclosure. Various engagement interfaces between the lid 120 and the fluid collector 100 are also discussed in relation to FIGS. 9, 10A, and 10B. Although the discussion provided focuses primarily on a user acting primarily on the lid 120 to place the lid 120 in an engaged configuration with the fluid collector 110 and selectively disengage the lid 120 from the fluid collector 110 with the fluid collector 110 disposed beneath the lid 120, the actions described may likewise be applied via a user acting primarily on the fluid collector 110, or a user acting on both the lid 120 and the fluid collector 110 in various directions.

[0093] When attaching the lid 120 to the fluid collector 110, the operator applies a downward force 810 to engage the tabs 730 with the acceptor 740, and then applies a rotational force 820 to the lid 120 in a first direction (e.g., clockwise) relative to the central axis 210, with respect to the fluid collector 110. Internal features to the acceptor 740 (discussed in more detail with reference to FIG. 9 ) prevent rotation of the lid 120 beyond a predetermined distance relative to the fluid collector 110, and once the lid 120 reaches this predetermined distance, the operator may release the downward force 810 and the rotational force 820 to maintain the seal within the collection device 100.

[0094] When removing the lid 120 from the fluid collector 110, the operator applies a downward force 810 to disengage the tab 730 from the acceptor 740 and then applies a rotational force to the lid 120 in a second direction (e.g., counterclockwise) relative to the central axis 210 with respect to the fluid collector 110. Internal features of the acceptor 740 (discussed in more detail with reference to FIG. 9 ) prevent rotation of the lid 120 in the second direction once a seal is formed until the downward force 810 releases the tab 730 from the internal features. Once released from the internal features, the operator can apply a rotational force 820 to disengage the lid 120 from the fluid collector 110 and break the seal.

[0095] 9 shows a time course as a twist-lock engagement between the lid 120 and the fluid collector 110 is formed, according to an embodiment of the present disclosure. As shown, an internal feature of an acceptor 740 relative to a tab 730, and the tab 730 is shown at three different times in four different positions 950a-d relative to the internal feature of the acceptor 740 to illustrate selective engagement and disengagement between the tab 730 and the acceptor 740.

[0096] The acceptor 740 defines a path 910 along which the tab 730 travels when an appropriate force is applied to the fluid collector 110 and lid 120. In various embodiments, a pair of intakes 960a-b are disposed at the inlet / outlet portion of the path 910 to accept the tab 730 into the acceptor 740 or remove the tab 730 from the acceptor 740, as shown as first position 950a. The intakes 960 help align the tab 730 with the path 910 when an operator applies a downward force 810 to begin sealing the collection device 100. Thus, inlets 960a-b define an inclined (e.g., non-parallel and non-perpendicular) surface relative to downward force 810, engaging tab 730 and pushing that tab 730 into alignment with acceptor 740 when downward force 810 is applied to tab 730 through one of the inlets 960.

[0097] The pathway 910 is bounded by a first boundary wall 940a (generally or collectively boundary walls 940), a second boundary wall 940b, and a ramp 920 leading to a catchment 930 designed to hold the tab 730 in a fourth position, and designed to hold the tab 730 in place in a fourth position 950d when rotated to an engaged position (and thereby hold the lid 120 in place on the fluid collector 110), and to resist rotation from the engaged position unless a downward force 810 is applied in a counter-rotating manner to the rotational force 820 used to engage the tab 730 with the catchment 930. The boundary walls 940 prevent the tab 730 from rotating past the end of the pathway 910 in either direction of rotation. The first boundary wall 940a prevents over-rotation in a counter-clockwise direction, and the second boundary wall 940b presents over-rotation in a clockwise direction.

[0098] The ramp 920, when in the second position 950b (and other positions not shown between the first position 950a and the third position 950c), provides an upward incline that engages the angled portion 980 of the tab 730 to reduce the amount of downward force 810 that must be applied when rotating the tab 730 from the first position 950a to the fourth position 950d. The ramp 920 can convert a portion of the rotational force 820 into a supplemental downward force that pushes the lid 120 downward as the tab 730 approaches the catchment 930 as the tab 730 moves from the first position 950a to the third position 950c, reducing the strain on the operator from applying the downward force 810 directly to the lid 120. In various implementations, the pitch of the angled portion 980 matches the pitch of the ramp 920 (e.g., both are angled at X degrees relative to the X direction). The angled portion 980 may make up a varying portion of the length (in the X direction) of the tab 730 based on the pitch, the overall length of the tab 730, and the elevation (in the Z direction) of the tab 730.

[0099] When the tab 730 moves onto the catchment 930 to the third position 950c, the operator can release the downward force 810 to allow the upward resistive force from the compressed gasket to push the lid 120 upward and move the tab 730 to the fourth position 950. Similarly, when disengaging the lid 120 and the fluid collector 110, the operator may work in the reverse direction: apply a downward force 810 to move the tab 730 from the fourth position 950d to the third position 950c, and apply a rotational force 820 to move the tab 730 from the third position 950c to the second position 950b and to the first position 950a, and then remove the lid 120 from the fluid collector 110.

[0100] In various embodiments, the vertical gap (in the Z direction) between the first boundary wall 940a and the ramp 920 in the portion of the ramp 920 distal from the intake 960 and proximal to the catchment 930 is at least as large as the elevation (in the Z direction) of the tab 730 to allow the tab 730 to pass through the gap. Although illustrated with the tab 730 moving while contacting the ramp 920, in various embodiments the vertical gap may be oversized such that an operator (applying a sufficient downward force 810) can push the tab 730 contacting the top of the first boundary wall 940a and apply a rotational force 820 to move the tab 730 above the end of the path 910 without contacting the ramp 920.

[0101] The horizontal gap (in the X direction) between the catchment 930 and the first boundary wall 940a may be less than or equal to the length (in the X direction) of the tab 730 to force engagement with the ramp 920 when engaging or disengaging the lid 120 from the fluid collector 110. In various embodiments, the length (in the X direction) of the catchment 930 is greater than or equal to the length of the tab 730. Furthermore, the depth of the catchment 930 (measured in the Z direction from the point of contact with the ramp 920) may be less than, equal to, or greater than the height of the tab 730, since a greater downward force 810 is generally required to move the tab 730 from the fourth position 950d to the deeper third position 950c.

[0102] In various embodiments, the tab 730 includes a first magnet 970a (generally or collectively, magnet 970) and the catchment 930 includes a second magnet 970b. The magnets 970 are permanent magnets of opposite polarity that provide an attractive force when in close proximity to one another to further help secure the tab 730 to the catchment 930 to maintain the seal between the lid 120 and the fluid collector 110 and thereby the greater downward force 810 to remove the tab 730 from the catchment 930 and break the seal. Thus, in addition to or instead of designing the catchment 930 to have an increasingly greater depth, a designer can specify the strength of the magnet 970 to increase the amount of downward force 810 required to move the tab 730 from the fourth position 950d to the third position 950c. In some implementations, one of the first magnet 970a or the second magnet 970b may be replaced with a ferromagnetic insert because the ferromagnetic insert itself does not exhibit magnetic strength, but the magnet 970 may be magnetically coupled when placed in close proximity to the ferromagnetic insert. In various implementations, the first magnet 970a may be included in or extend into the angled portion 980 of the tab 730, or may be included only outside the angled portion 980 (e.g., in the "flat" or non-angled portion 980).

[0103] In various embodiments, when the lid 120 snaps into place on the fluid collector 110, the magnet 970 provides tactile or audible feedback to the operator to confirm that the parts are properly aligned and a vacuum seal is formed.

[0104] Although FIG. 9 shows the pathway 910 and the internal elements of the acceptor 740 using clockwise rotation to engage the lid 120 and fluid collector 110 (and counterclockwise rotation to disengage the lid 120 and fluid collector 110), the components shown may be mirror-symmetric about the Z axis to provide counterclockwise engagement (and clockwise disengagement).

[0105] 10A and 10B show a time course of a gasket sealing a collection device 100 according to an embodiment of the present disclosure. FIGs. 10A and 10B show a cross-sectional view of a lid 120 engaging a fluid collector 110 having a tab 730 that engages a corresponding acceptor 740. A first gasket 140 is included in the lid 120 (as part of the fluid collector 110 concentrically aligned with the first gasket 140) to interface with a first mating surface 710. A second gasket 150 is included in the fluid collector 110 (as part of the lid 120 concentrically aligned with the second gasket 150) to interface with a second mating surface 720. The gasket is configured to compress when pressure is applied between the lid 120 and the fluid collector 110, such as a downward force 810 applied by an operator when engaging the lid 120 and the fluid collector 110, and maintained by the tab 730 and the acceptor 740 by negative pressure supplied via the vacuum tubing 190b and the combination thereof when engaged, thereby establishing and maintaining an airtight seal.

[0106] In various embodiments, the gaskets may be made of a variety of compressible materials to form an airtight seal, which may include a variety of rubbers or rubberized plastics, and the first gasket 140 may be made of the same or a different material as the second gasket 150.

[0107] The first gasket 140 encompasses the second gasket 150, which defines an annulus (measured from an outer radius 1020 of the second gasket 150) that is smaller than the inner radius 1010 of the annulus defined by the first gasket 140. The gasket is deformable under pressure, but the gasket may have a substantially circular cross-sectional area in an uncompressed state, or may have a cross-sectional area of ​​other shapes (e.g., oval, rectangular, irregular, etc.). In various embodiments, the cross-sectional areas of each of the first gasket 140 and the second gasket 150 may be substantially equal, or may be unequal, with the cross-sectional area of ​​one gasket being at least 10% greater than the cross-sectional area of ​​the other gasket. The gasket may be attached to the respective lid 120 or fluid collector 110 by adhesive, pressure mounting (e.g., via the annular shape of the gasket interfacing with a groove or recess defined in the respective lid 120 or fluid collector 110), gravity, and combinations thereof.

[0108] The first mating surface 710 is proximal to the opening surface 220 relative to the second mating surface 720, and the first gasket 140 is compressed (as shown in the Z direction in FIG. 10A ) before the second gasket 150 is compressed (as shown in the Z direction in FIG. 10B ). In other words, the first gasket 140 and the first mating surface 710 are configured to engage with each other when the lid 120 is attached to the fluid collector 110, but the second gasket 150 and the second mating surface 720 are configured not to engage with each other until a force is applied later that brings them into contact with each other when the lid 120 is attached to the fluid collector 110.

[0109] In various embodiments, to aid in capturing the second gasket 150, a stop surface 1030 is included on the fluid collector 110 and engages the second mating surface 720 to prevent over-tightening of the lid 120 or over-compression of the gasket.

[0110] Thus, when an operator engages the lid 120 to the fluid collector 110, the operator may establish a seal on the collection device 100 by compressing the first gasket 140 via a downward force 810, but may leave the second gasket 150 uncompressed. Once a seal is established (e.g., via the first gasket 140, as shown in FIG. 10A), the operator may apply suction to the collection device 100 via vacuum tubing 190b connected to a pump or vacuum source (not shown). This suction applies additional force to engage the second gasket 150 with the second mating surface 720 once a threshold negative pressure is provided to the fluid containment region 180, thereby forming a second seal between the lid 120 and the fluid collector 110. In various embodiments, the negative pressure threshold may be selected by the designer as a pressure difference between the external environment and the fluid containment region 180, such as a range of values, including 1 PSI or more below the current atmospheric pressure, 1 to 5 PSI or more below the current atmospheric pressure, 5 PSI or more below the current atmospheric pressure, 5 to 10 PSI or more below the current atmospheric pressure, 10 PSI or more below the current atmospheric pressure, 10 to 15 PSI or more below the current atmospheric pressure, or 15 PSI or more below the current atmospheric pressure.

[0111] By allowing the operator to establish the first seal without compressing the second gasket 150, the amount of force required from the operator to establish the first seal is reduced. Additionally, by establishing two seals, the fluid containment area 180 is protected from loss of the seal through one of the gaskets, and the collection device 100 may be exposed to greater negative pressure than a device using a single seal.

[0112] 11A and 11B show cross-sectional views of a collection device 100 including a pressure film 1110 within a fluid containment region 180 according to an embodiment of the present disclosure. In various embodiments, the pressure film 1110 may be secured to an interior portion of the wall 112 of the fluid collector 110 within the fluid containment region 180 by adhesive tape (double-sided), glue, epoxy, or other adhesive.

[0113] In various implementations, the pressure film 1110 is used to measure the pressure applied to the fluid containment area 180, and as pressure is applied, the pressure film 1110 displays a color intensity change corresponding to the pressure distribution. The pressure film 1110 may be used to indicate whether the fluid containment area 180 has reached a desired pressure when suction is applied, or has maintained a desired pressure for at least a threshold time after suction is applied (or removed). In various implementations, the color change in the pressure film 1110 may be reversible (e.g., can revert to an initial color when pressure is removed) or irreversible (e.g., permanently shows a color associated with the highest / lowest pressure ever applied).

[0114] To indicate pressure within the fluid containment region 180, a pressure film 1110 disposed therein is configured to change color in response to changes in pressure within the fluid containment region 180. As shown in Figure 11A, the pressure film 1110 exhibits a first color indicative of a first pressure, and as shown in Figure 11B, the pressure film 1110 exhibits a second color, different from the first color, indicative of exposure to a predetermined pressure.

[0115] In various embodiments, the pressure film 1110 may be selected to exhibit different color changes (e.g., white to black, red to green, etc.) at different pressures, and may change color gradually as pressure changes or in response to experiencing a threshold pressure (e.g., maintaining a constant color until a threshold pressure is reached). In various embodiments, the pressure film 1110 changes color in response to the vacuum pressure to which it is exposed. When the pressure film 1110 is applied inside the collection device 100, the pressure film 1110 may change color gradually in response to changes in pressure or in response to experiencing a threshold vacuum pressure (e.g., maintaining a constant color until a threshold vacuum pressure is reached).

[0116] In various embodiments, the pressure film 1110 visually indicates to the operator the pressure or pressure change within the collection device 100. This allows the operator to easily troubleshoot whether there is an actual leak, uneven pressure, or unexpected pressure within the collection device 100. For example, if the operator believes the collection device 100 has a leak, but the pressure film 1110 within the collection device 100 indicates that vacuum pressure is being maintained, the operator can troubleshoot other system components without having to disassemble the collection device 100, thereby reducing the amount of time spent troubleshooting.

[0117] The pressure film 1110 is positioned within the fluid collector 110 such that it is visible to an observer without removing the lid 120 from the fluid collector 110, and may be visible during operation of the collection device 100. Thus, when the lid 120 extends a first distance 1120a from the first surface 220, the pressure film 1110 is positioned a second distance 1120b away from the first surface 220 so as not to obstruct the view. Additionally, when the plurality of fluid outlets 360 in the solids filter 130 are positioned at least a third distance 1120c from the first surface 220, the second distance 1120b is defined to be less than the third distance 1120c so that the fluid 530 does not contact the pressure film 1110. In other words, the height at which the pressure film 1110 is positioned in the fluid containment area 180 is set between the lid 120 and the first portion 370a (or collection surface 350) of the solids filter 130.

[0118] Because the solids filter 130 and return filter 170 extend into the fluid collector 110 through a zone defined by the second distance 1120b, in various embodiments the pressure film 1110 may extend around the inner circumference of the wall 112 of the fluid collector 110 to ensure visibility. In other embodiments, one or more lengths of pressure film 1110 may be positioned at different locations around the circumference of the wall 112 and within the zone defined by the second distance 1120b, allowing for less use of pressure film 1110 while still ensuring visibility (from various angles) that is not obstructed by the solids filter 130 or return filter 170.

[0119] 12 is a flow chart of a method 1200 for assembling and using the collection device 100 according to an embodiment of the present disclosure. The method 1200 begins at block 1210, where a user assembles the solids filter 130. In various embodiments, the user assembles the solids filter 130 by connecting two sections 310 together, which may include two identical sections 310, or may include two sections 310 differing in one or more of the number, location, orientation, and size of the fluid outlets 360 included in each section 310. The combined sections 310 thereby provide a solids filtration means of the collection device 100 that can be customized by the user to provide various flow rates and flow paths for the fluid 530. Additionally, the optically transparent walls of the sections 310 allow for visual determination of whether (and at what rate) the fluid 530 is flowing through the solids filtration means and whether solids 540 are being collected in the solids filtration means while the solids filtration means is in use.

[0120] Although block 1210 is presented in FIG. 12 as occurring before block 1220, in various embodiments, block 1220 may occur before or substantially simultaneously with block 1210 of method 1200. Similarly, although block 1210 is presented in FIG. 12 as occurring before block 1230, block 1230 may occur before or substantially simultaneously with block 1210 of method 1200. Additionally, in some embodiments, block 1210 may be omitted from method 1200 when using a pre-assembled or single-piece solids filter 130.

[0121] At block 1220, the user (optionally) attaches an internal component to the pressure containment means prior to forming an airtight seal. In various embodiments, the internal component includes a pressure measurement means attached to the inner wall of the fluid collector 110 used as part of the fluid containment area 180. In various embodiments, the pressure measurement means is attached to the inner wall via an adhesive, but may also be attached via a cutout, ledge, or pressure clip built into the inner wall.

[0122] In various embodiments, a user may select different pressure films 1110 having different sensitivities and pressure measurement ranges for use as a pressure measurement means such that a user may visually inspect, through the light-transmissive wall 112 of the fluid collector 110, whether a desired negative pressure has been reached or maintained during operation of the collection device 100. Additionally, the pressure measurement means may provide a user with an indication of whether the pressure applied to the fluid containment region 180 has been maintained for at least a predetermined time after the fluid collector 110 has been disengaged from the collection target or negative pressure source to ensure that an airtight seal has been maintained.

[0123] In various embodiments, the user additionally or alternatively secures an aerosol filtration means (e.g., return filter 170) to the lid 120 to reduce any fluid or aerosolized components thereof collected in the fluid containment area 180 during block 1220 from flowing out of the fluid containment area 180 or being drawn into the negative pressure source while negative pressure is being applied. In various embodiments, the aerosol filtration means is disposed within the fluid containment area 180 once the lid 120 is selectively engaged to the fluid collector 110.

[0124] At block 1230, the user attaches the lid 120 to the fluid collector 110. In various embodiments, the user contacts the lid 120 with an opening in the fluid collector 110, applies a downward force 810 to engage a plurality of twist locks to secure the lid 120 to the fluid collector 110, and applies a rotational force 820 in a first direction to engage a plurality of twist locks to ensure that an airtight seal is formed and maintained between the lid 120 and the fluid collector 110. In various embodiments, the lid 120 and the fluid collector 110 engage to form a pressure containment means that includes a fluid containment region 180, and at least a portion of the pressure containment means (e.g., the fluid collector 110) is optically transparent to allow visual inspection of the pressure containment means during use.

[0125] In various embodiments, the lid 120 and the fluid collector 110 include first and second sealing means for forming an airtight seal, such as a first gasket 140 and a first mating surface 710 and a second gasket 150 and a second mating surface 720 (described in more detail with reference to FIGS. 10A and 10B). In various embodiments, the airtight seal is first formed by the first sealing means (e.g., the first gasket 140 and the first mating surface 710) and then supplemented by the second sealing means when the negative pressure pulls the lid 120 tightly onto the fluid collector (e.g., during block 1240). Thus, a user may apply a downward force 810 and a rotational force 820 to engage a plurality of first engagement means (e.g., acceptors 7410) with a plurality of second engagement means (e.g., tabs 730) to seal the pressure containment means through the first sealing means, but the second sealing means may remain disengaged until negative pressure is applied to the pressure containment means via a negative pressure source.

[0126] At block 1240, the user secures the solids filter to the fluid containment area 180. In various embodiments, the engagement features of the solids filter 130 and the lid 120 position the solids filter 130 in a desired location relative to the wall 112 of the fluid collector 110, which may include an off-center location (e.g., positioning the solids filter 130 closer to one side of the fluid collector 110 for ease of visual inspection). The engagement features may include the relative shapes of corresponding ports or through-holes in the solids filter 130 and the lid 120, or various filter alignment features 610 or port alignment features 620 as discussed in connection with FIGS. 6A and 6B. In various embodiments, the solids filtering means is secured to the fluid containment area via a cap 160 that interfaces with a port included in the lid 120.

[0127] At block 1250, the user places collection device 100 in fluid communication with a negative pressure source and a filtration target. In various embodiments, the fluid communication means includes an intake tube 190a and a vacuum tube 190b that are connected to associated ports or through-holes that comprise lid 120 and are connected to a filtration target (e.g., a blood vessel or a port connected to a blood vessel) and a negative pressure source (e.g., a vacuum pump), respectively.

[0128] At block 1260, the user applies negative pressure to the filtration target via the fluid communication means. In various other embodiments, the user places a vacuum or other negative pressure source in an operational mode to apply negative pressure or suction to the fluid containment region 180. The pressure containment means is disposed between and in fluid communication with the negative pressure source and the filtration target such that the applied negative pressure draws or draws the fluid 530 from the filtration target into the fluid containment region 180 by the applied negative pressure passing through the filtration target. The relative position of the solids filtration means in the flow path of the fluid 530 allows the solids filtration means to capture various solids 540 that comprise the fluid 530 (e.g., based on the size and position of the fluid outlet 360 relative to the size of the solids 540).

[0129] At block 1270, the user verifies whether the collection criterion has been reached. If the collection criterion has been reached, the method 1200 proceeds to block 1280, otherwise the method 1200 continues until the collection criterion has been reached. In one embodiment, the collection criterion includes at least one of a total amount of fluid collected in the fluid containment area 180, whether solids 540 have been collected in the solids filter 130, the amount of solids 540 collected in the solids filter 130, reaching a desired flow rate of fluid 530 for a corresponding pressure differential provided by the negative pressure source, or a time limit, or the like.

[0130] At block 1280, the user disengages the collection device 100 from the filtration target. In various embodiments, disengaging the collection device 100 includes shutting off the negative pressure source and removing the fluid communication means from the pressure containment means. In various embodiments, the user may manually engage one or more seals or valves in the fluid communication path (e.g., ports or caps of the fluid collection device 100) prior to removing the fluid communication means to maintain the negative pressure that was applied when the fluid communication means was removed, or the fluid communication path may include various one-way valves or other automatic sealing members that prevent air flow when the fluid communication means is removed without further user intervention.

[0131] In various embodiments, after disengaging the collection device 100 from the filtration target, the user may leave the collection device 100 sealed (under negative pressure) for a period of time to observe the collected fluid 530 and collected solids 540 without exposing them to the outside environment. Because the wall 112 and solids filter 130 are optically transparent, the user may periodically observe the condition of the collection device 100 (and its contents), which may include a pressure film 1110 to check the internal pressure of the collection device 100.

[0132] In various embodiments, a user may selectively disengage the lid 120 from the fluid collector 110 or the solids filter 130 from the lid 120 (and cap 160) to remove the collected fluid 530 or solids 540 for further testing or use.

[0133] The method 1200 may end after block 1280 or may resume using some or all of the previously assembled components to continue collection of fluid 530 and / or solids 540 from the filtration target.

[0134] The description and drawings of one or more embodiments provided in this disclosure are intended to thoroughly and completely disclose the entire scope of the subject matter to those skilled in the art, and are not intended to limit or restrict in any way the scope of the claimed subject matter. The aspects, examples, and detailed description provided in this disclosure are believed to be sufficient to convey possession of the invention and to enable one skilled in the art to practice the best mode of the claimed subject matter. Descriptions of structures, resources, operations, and acts that are believed to be well known to those skilled in the art may be brief or omitted to avoid obscuring lesser known or unique aspects of the subject matter of the present disclosure. The subject matter described in the claims should not be construed as being limited to one embodiment, aspect, example, or detailed description in this disclosure unless expressly described herein. Various features (both structural and methodological), whether shown collectively or described individually, are intended to be selectively included or omitted to produce an embodiment having a particular set of features. Furthermore, any or all of the functions and acts shown or described may be performed in any order or simultaneously.

[0135] Given the description and drawings of this disclosure, one skilled in the art may envision variations, modifications, and alternative embodiments that are within the spirit of the broad aspects of the general inventive concepts presented in this disclosure and do not depart from the broad scope of the present disclosure.

[0136] As used in this disclosure, phrases referring to "at least one" of a list of items refer to any set of those items, including sets containing single members, and all potential combinations thereof. For example, when referring to "at least one of A, B, or C" or "at least one of A, B, or C," the phrase is intended to cover the set of A, B, C, AB, BC, and ABC, where the set may include one or more instances of a given member (e.g., AA, AAA, AAB, AABBCCC, etc.) and any order thereof.

[0137] The term "determining" as used in this disclosure may encompass various operations including calculating, computing, processing, deriving, investigating, looking up (e.g., via a table, database, or other data structure), ascertaining, receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), searching, resolving, sorting, selecting, establishing, and the like.

[0138] The terms "substantially," "approximately," "about," and other relative terms used in this disclosure in conjunction with a stated quantity, percentage, or range include numerical values ​​within ±5% of the stated quantity, percentage, or range, unless a different approximation is expressly stated or the context of the numerical values ​​indicates that a different approximation is more appropriate. For example, a numerical value specified as about X% should be understood to include numerical values ​​between 0.95*X% and 1.05*X%, or between X-0.05X% and X+0.05X%, but may not exceed zero or 100% in various contexts. In another example, a feature described as being substantially parallel or perpendicular to another feature should be understood to be within ±9 degrees of parallel or perpendicular. Numerical values ​​stated in relative terms should be understood to include the stated numerical value and a range or subrange between the measured or implied extremes.

[0139] As used in this disclosure, all numerical values ​​given in the examples (whether or not given as approximations) inherently include numerical values ​​within the precision and rounding error of the numerical values. For example, the numerical value 4.5 should be understood to include values ​​from 4.45 to 4.54, while the numerical value 4.50 should be understood to include values ​​from 4.495 to 4.504. Furthermore, numerical values ​​or ranges that explicitly or by context refer to integer values ​​(e.g., between about X users, about Y states and about Z states) should be rounded down or up to the next integer value. (e.g., X±1 users, Y-1 and Z+1 states).

[0140] The following claims are not intended to be limited to the embodiments shown herein, but are to be accorded the full scope consistent with the language of the claims. In the claims, reference to an element in the singular is not intended to mean "only one" unless specifically so stated, but rather "one or more" or "at least one". Unless otherwise specified, the term "some" refers to one or more. No element in a claim is to be construed under the provisions of Title 35, United States Code, Section 112(f) unless the element is expressly recited with the phrase "means for" or "step for". All structural and functional equivalents of the elements of the various aspects described in this disclosure that are known or later become known to those skilled in the art are expressly incorporated herein by reference and are intended to be encompassed by the claims. Furthermore, no invention disclosed in this disclosure is intended to be dedicated to the public, regardless of whether such disclosure is expressly recited in the claims.

[0141] (Additional Note) (Appendix 1) A collection device comprising a lid (120) and a fluid collector (110), the lid includes a first gasket (140) and a first mating surface (720), the first gasket and the first mating surface being oriented concentrically about a central axis (210); the fluid collector includes a second gasket (150) and a second mating surface (710), the second gasket and the second mating surface are oriented concentrically about the central axis, and when the lid selectively engages the fluid collector, the second gasket is positioned to engage with the first mating surface and the second mating surface is positioned to engage with the first gasket.

[0142] (Appendix 2) 2. The collection device of claim 1, wherein the first gasket and the first mating surface are configured to engage with each other when the lid is attached to the fluid collector, and the second gasket and the second mating surface are configured not to engage with each other when the lid is attached to the fluid collector until a threshold negative pressure is supplied to a fluid containment area (180) defined by the lid and the fluid collector.

[0143] (Appendix 3) 2. The collection device of claim 1, wherein an outer radius (1020) of the second gasket is smaller than an inner radius (1010) of the first gasket.

[0144] (Appendix 4) the lid includes an intake port (122) defining a first through hole; The collection device further includes a solids filter (130), an inlet tubing (190a), and a cap (160); the solids filter defines a plurality of fluid outlets (360) and is configured to selectively interface with the intake port, the plurality of fluid outlets being disposed through the first through-hole and within a fluid containment area (180) defined between the lid and the fluid collector; the cap is configured to secure the solids filter within the first through hole and to secure the intake tubing within the solids filter via a one-way valve. 2. The collection device of claim 1.

[0145] (Appendix 5) 5. The collection device of claim 4, wherein the fluid collector and the solids filter are optically transparent.

[0146] (Appendix 6) A collection device comprising a pressure containment means, a solids filtering means, a first fluid communication means, and a second fluid communication means, the pressure containment means having a fluid containment region (180), at least a portion of the pressure containment means being optically transparent; the solids filtering means is disposed within the fluid containment region and is optically transparent; the first fluid communication means is connected to the pressure containment means and is isolated from the fluid containment area via the solids filtration means; the second fluid communication means is connected to the pressure containment means and to a negative pressure source to apply a negative pressure to the fluid containment area and draw fluid through the first fluid communication means, through the solids filtering means and into the fluid containment area; Collection device.

[0147] (Appendix 7) and further comprising an aerosol filtration means disposed within said fluid containment region and connected to said second fluid communication means, said aerosol filtration means configured to reduce inhalation of said fluid from said fluid containment region into said second fluid communication means when negative pressure is applied. 7. The collection device of claim 6.

[0148] (Appendix 8) the solids filtering means is retained in the fluid containment area via an engagement feature that interfaces with a first through hole in a lid (120) of the pressure containment means, the first through hole being non-concentrically disposed about a central axis (210) of the pressure containment means, positioning the solids filtering means off-center relative to the central axis; 7. The collection device of claim 6.

[0149] (Appendix 9) The pressure containment means includes a lid (120) and a fluid collector (110) having a first sealing means and a second sealing means. 7. The collection device of claim 6.

[0150] (Appendix 10) the lid includes a plurality of first engagement means and the fluid collector includes a plurality of second engagement means, each of the plurality of second engagement means engaging a corresponding first engagement means of the plurality of first engagement means via a downward force and a rotational force in a first direction applied to the lid when in contact with the fluid collector to seal against the pressure containment means via a first sealing means; 10. The collection device of claim 9.

[0151] (Appendix 11) the second sealing means is not engaged until the negative pressure is applied to the pressure containment means via the negative pressure source. 11. The collection device of claim 10.

[0152] (Appendix 12) Each of the first engagement means of the plurality of first engagement means includes a magnet (970); a catchment (930) included in each second engagement means that captures a corresponding first engagement means when the pressure containment means is sealed includes a ferromagnetic inclusion for magnetically interfacing with the magnet of the corresponding first engagement means; 11. The collection device of claim 10.

[0153] (Appendix 13) each second engagement means of the plurality of second engagement means includes a magnet (970) in a catchment (930) that captures a corresponding first engagement means when the pressure containment means is sealed; each first engagement means of the plurality of first engagement means includes a ferromagnetic inclusion that magnetically interfaces with a magnet of a corresponding second engagement means when the pressure containment means is sealed; 11. The collection device of claim 10.

[0154] (Appendix 14) each of the plurality of first engagement means includes a first magnet (970a) of a first polarity; each second engagement means of the plurality of second engagement means includes a second magnet (970b) of a second polarity within a catchment (930) that captures a corresponding first engagement means when the pressure containment means is sealed to magnetically interface with the first magnet of the corresponding first engagement means; 11. The collection device of claim 10.

[0155] (Appendix 15) and a pressure indicating means disposed within the fluid containment region and visible from outside the fluid containment region. 7. The collection device of claim 6.

Claims

1. A collection device comprising a lid (120) and a fluid collector (110), the lid includes a first gasket (140) and a first mating surface (720), the first gasket and the first mating surface being oriented concentrically about a central axis (210); The fluid collector includes a second gasket (150) and a second mating surface (710), the second gasket and the second mating surface are oriented concentrically about the central axis, and when the lid selectively engages the fluid collector, the second gasket is positioned to engage the first mating surface and the second mating surface is positioned to engage the first gasket.

2. 2. The collection device of claim 1, wherein the first gasket and the first mating surface are configured to engage with one another when the lid is attached to the fluid collector, and the second gasket and the second mating surface are configured not to engage with one another when the lid is attached to the fluid collector until a threshold negative pressure is supplied to a fluid containment area (180) defined by the lid and the fluid collector.

3. 2. The collection device of claim 1, wherein an outer radius (1020) of the second gasket is smaller than an inner radius (1010) of the first gasket.

4. the lid includes an intake port (122) defining a first through hole; The collection device further includes a solids filter (130), an intake tubing (190a), and a cap (160); the solids filter defines a plurality of fluid outlets (360) and is configured to selectively interface with the intake port, the plurality of fluid outlets being disposed through the first through-hole and within a fluid containment area (180) defined between the lid and the fluid collector; the cap is configured to secure the solids filter within the first throughbore and to secure the intake tubing within the solids filter via a one-way valve; 2. The collection device of claim 1.

5. 5. The collection device of claim 4, wherein said fluid collector and said solids filter are light transmissive.

6. A collection device comprising a pressure containment means, a solids filtering means, a first fluid communication means, and a second fluid communication means, the pressure containment means having a fluid containment region (180), at least a portion of the pressure containment means being optically transparent; the solids filtering means is disposed within the fluid containment region and is optically transparent; the first fluid communication means is connected to the pressure containment means and is isolated from the fluid containment area via the solids filtration means; the second fluid communication means is connected to the pressure containment means and to a negative pressure source for applying a negative pressure to the fluid containment area and drawing fluid through the first fluid communication means, through the solids filtering means and into the fluid containment area. Collection device.

7. and an aerosol filtration means disposed within said fluid containment region and connected to said second fluid communication means, said aerosol filtration means configured to reduce inhalation of said fluid from said fluid containment region into said second fluid communication means when negative pressure is applied.

7. The collection device of claim 6.

8. the solids filtering means is retained in the fluid containment area via an engagement feature that interfaces with a first through hole in a lid (120) of the pressure containment means, the first through hole being non-concentrically disposed with respect to a central axis (210) of the pressure containment means, positioning the solids filtering means off-center relative to the central axis; 7. The collection device of claim 6.

9. The pressure containment means includes a lid (120) and a fluid collector (110) having a first sealing means and a second sealing means.

7. The collection device of claim 6.

10. the lid includes a plurality of first engagement means and the fluid collector includes a plurality of second engagement means, each of the plurality of second engagement means engaging a corresponding first engagement means of the plurality of first engagement means via a downward force and a rotational force in a first direction applied to the lid when in contact with the fluid collector to seal against the pressure containment means via a first sealing means; 10. The collection device of claim 9.

11. the second sealing means is not engaged until the negative pressure is applied to the pressure containment means via the negative pressure source.

11. The collection device of claim 10.

12. each first engagement means of said plurality of first engagement means includes a magnet (970); a catchment (930) included in each second engagement means that captures a corresponding first engagement means when the pressure containment means is sealed includes a ferromagnetic inclusion for magnetically interfacing with the magnet of the corresponding first engagement means; 11. The collection device of claim 10.

13. each second engagement means of said plurality of second engagement means includes a magnet (970) in a catchment (930) that captures a corresponding first engagement means when said pressure containment means is sealed; each first engagement means of the plurality of first engagement means includes a ferromagnetic inclusion that magnetically interfaces with a magnet of a corresponding second engagement means when the pressure containment means is sealed; 11. The collection device of claim 10.

14. each first engagement means of said plurality of first engagement means includes a first magnet (970a) of a first polarity; each second engagement means of said plurality of second engagement means includes a second magnet (970b) of a second polarity within a catchment (930) that captures a corresponding first engagement means when said pressure containment means is sealed to magnetically interface with a first magnet of a corresponding first engagement means; 11. The collection device of claim 10.

15. and a pressure indicating means disposed within the fluid containment region and visible from outside the fluid containment region.

7. The collection device of claim 6.

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