Fluid connector system
The fluid connector system with engaging structures and controlled separation mechanisms addresses unintended disconnection in medical fluid connections, ensuring safe and reliable fluid delivery even under high-pressure conditions.
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- CAREFUSION 303 INC
- Filing Date
- 2024-04-18
- Publication Date
- 2026-06-03
AI Technical Summary
Medical fluid connections, such as those in IV infusion lines, can unintentionally disconnect or sever due to unexpected forces, leading to patient harm, infection risk, and caregiver exposure to harmful medications, especially under high-pressure conditions.
A fluid connector system with a valve assembly that includes a first and second connector portion, featuring engaging structures and flow paths designed to resist disengagement under normal fluid pressure but allow controlled separation under excessive force, maintaining connection integrity during high-pressure infusions.
Prevents unintended disconnection, ensuring safe and reliable fluid delivery by allowing controlled disconnection only when necessary, thus preventing injuries and maintaining fluid pathway integrity under high-pressure conditions.
Smart Images
Figure 2026518027000001_ABST
Abstract
Description
Technical Field
[0001] The present disclosure generally relates to medical fluid connectors. More specifically, it relates to a fluid connector system having a valve assembly that can be coupled to form a fluid path.
[0002] Medical connections are widely used in fluid supply systems related to intravenous (IV) infusion lines, blood access, hemodialysis, peritoneal dialysis, enteral nutrition, drug vial access, and other procedures.
[0003] In some cases, medical connections can unintentionally disconnect or be severed. For example, the medical tubing of an infusion set connected to a catheter can disconnect if an unintentional or unexpected force applied to the catheter exceeds the design limits of the catheter fixation method. Unintentional or unanticipated forces can be applied when a patient moves in bed or turns over, or when another part of the tubing or infusion set gets caught on a part of the bed (e.g., a railing), or when a patient is in a panicked, confused, or restless state and unintentionally or intentionally pulls the medical tubing away from themselves or from a medical device attached to the tubing.
[0004] In some applications, high-pressure medical fluids (up to or exceeding 325 psi) can be used for certain medical infusions. In certain applications, when high-pressure medical fluids pass through a connection, the medical connection can be severed.
Summary of the Invention
[0005] At least in some embodiments of the present disclosure, it is recognized that an unintentional disconnection or severance of a medical connection such as a medical infusion line can cause harm to a patient or caregiver, such as interruption of the supply of medication to the patient, increased risk of infection to the patient, and exposure of the caregiver to harmful medications.
[0006] Accordingly, aspects of the present disclosure provide a connector including a first connector portion, the first connector including a connector housing and an engaging portion, the connector housing including a connector body defining a tube opening and a mating opening, the connector body defining a flow path between the tube opening and the mating opening, the engaging portion at least partially surrounding the connector body, the engaging portion defining a mating lip extending radially toward the connector body, the mating lip configured to detachably engage the connector housing with the mating connector portion, the flow path including at least one portion normal to the engaging portion, the fluid flow passing through the flow path acting a force normal to the connector housing to prevent the connector housing from disengaging from the mating connector portion.
[0007] In some cases, the present disclosure provides a first connector portion and a second connector portion, the first connector portion defining a tube opening and a mating opening, the first connector portion defining a flow path between the tube opening and the mating opening, the second connector portion defining a second tube opening and a second mating opening, the second connector portion defining a second flow path between the second mating opening and the tube opening, the mating opening of the first connector portion and the second mating opening of the second connector portion being in fluid communication when the first connector portion and the second connector portion are engaged, the flow path or the second flow path includes at least one portion that is normal to the overlapping portion of the first connector portion and the second connector portion, the fluid flow passing through the flow path or the second flow path acts a force normal to the overlapping portion of the first connector portion and the second connector portion, and prevents the first connector portion from detaching from the second connector portion.
[0008] Therefore, this disclosure addresses several operational challenges encountered in conventional fluid connections and provides numerous improvements that enable users to provide fluid connections more safely, effectively, easily, and accurately.
[0009] Further features and advantages of this technology are described below, some of which will become apparent from the description or be understood by implementing the technology. The advantages of this technology are realized and achieved by the structures particularly indicated in the description and embodiments of this disclosure and in the accompanying drawings.
[0010] Please understand that the general explanation above and the detailed explanation below are illustrative and explanatory, and are intended to further enhance your understanding of this technology. [Brief explanation of the drawing]
[0011] Various features of embodiments of the present invention will be described below with reference to the drawings. The illustrated embodiments are illustrative of the present invention and do not limit it. The drawings include the following figures. [Figure 1] This is a diagram of a fluid connector used with an infusion set connected to a patient, according to an aspect of this disclosure. [Figure 2] This is a perspective view of a separated fluid connector according to an aspect of the present disclosure. [Figure 3] This is a cross-sectional view of the separated fluid connector shown in Figure 2, according to an aspect of this disclosure. [Figure 4] This is a cross-sectional view of the connected fluid connector shown in Figure 2, according to an aspect of this disclosure. [Figure 5] This is a cross-sectional view of a separated fluid connector according to an aspect of the present disclosure. [Figure 6] Figure 5 is an exploded view of the fluid connector according to an aspect of this disclosure. [Figure 7] This is a cross-sectional view of the connected fluid connector shown in Figure 5, according to an aspect of this disclosure. [Modes for carrying out the invention]
[0012] The following detailed description includes numerous specific details to ensure a thorough understanding of this technology. It should be understood that this technology can be implemented without some of these specific details. In other instances, known structures and techniques are not shown in detail to avoid obscuring the technology.
[0013] Furthermore, while this disclosure describes specific details of various embodiments, it should be understood that these descriptions are illustrative and should not be interpreted in any way as limiting. Moreover, even if specific embodiments of this disclosure are disclosed or illustrated in the description of an infusion set, such embodiments are expected to be usable in other fluid delivery systems. Furthermore, various applications of such embodiments and their variations that those skilled in the art can envision are also included within the general concepts described in this disclosure.
[0014] In accordance with several embodiments, the present invention discloses various features and advantages of fluid connector systems. Fluid connector systems can provide efficient and secure maintenance of fluid connections, such as connections used to supply or drain intravenous fluids to or from a patient. Fluid connector systems can maintain fluid pathways by preventing unintended breakage even when tensile forces or tension are applied to the fluid connector system, such as when a patient moves or a medical tube is pulled away from the patient.
[0015] Fluid connector systems can also prevent injury to patients or caregivers by allowing breakage or separation between parts of the connector system when tensile force or tension exceeds a threshold. Fluid connector systems can also prevent injury to patients or caregivers by blocking the fluid pathway when breakage or separation between parts of the connector system occurs. Furthermore, fluid connector systems can efficiently and safely re-establish the fluid pathway by allowing partial reassembly of the system after breakage or separation occurs. As an advantage, the fluid connectors described herein can prevent blood loss, fluid loss, infection, and / or delays in medication administration. In some applications, the design of the fluid connector can facilitate effective cleaning and disinfection of its components.
[0016] Furthermore, in some applications, the fluid connector system may prevent unintended disconnection during specific events or applications, and may selectively allow disconnection or separation of parts of the connector system if tensile force or tension exceeds a threshold. For example, the fluid connector system may be configured to prevent disconnection or separation during high-pressure injection (when the fluid pressure is up to or above 325 psi), or during other clinical uses where the fluid connector system may unintentionally separate. The fluid connector system may selectively allow disconnection or separation of parts if tensile force or tension exceeds a threshold.
[0017] Referring here to the figures, Figure 1 shows an example of a fluid connector 100 according to an aspect of the present disclosure. The connector system 100 is connected to the tubing of an infusion set used to supply fluid to a patient 10. The infusion set may include a drug bag 12, an infusion chamber 14, tubing 16, and an intravenous catheter 18.
[0018] The connector system 100 fluidly connects the tube 16 to the intravenous catheter 18. While the connector system 100 may be connected along the fluid pathway of an infusion set between the drug bag 12 and the patient 10, as shown in the illustration, it should be understood that the connector system 100 may also be connected within other fluid pathways, such as between the patient and an infusion pump, or between the patient and a dialysis machine. The connector system 100 may also be connected along other parts of a fluid pathway. For example, the connector system 100 may be connected along the proximal part of a fluid pathway, such as between the drug bag 12 and the tube 16, or to another fluid therapy device. In another example, either or both of the first and second parts of the fluid connector 100 may be directly connected to other fluid delivery devices, such as a catheter or drug bag.
[0019] Figure 2 shows a perspective view of the fluid connector 200 in a disconnected state according to an embodiment of this disclosure. Figure 3 shows a cross-sectional view of the fluid connector 200 in a disconnected state according to an embodiment of this disclosure. Figure 4 shows a cross-sectional view of the fluid connector 200 in a connected state according to an embodiment of this disclosure. Referring to Figures 2 to 4, the fluid connector 200 can provide a fluid pathway to the patient while allowing for a "fuse link" or quick disconnect, enabling controlled disconnection in the event of excessive force, and maintaining the connection during high-pressure infusion or other procedures. As described in this disclosure, the fluid connector 200 can enable controlled disconnection at a predetermined level of force to prevent the catheter from being unintentionally removed from the patient or to prevent unintentional disconnection during high-pressure infusion procedures.
[0020] As shown in the figure, the fluid connector 200 provides a flow path or fluid path from one end of the fluid connector 200 to the opposite end of the fluid connector 200. As shown in the figure, the fluid connector 200 includes a first connector portion 210 and a second connector portion 240 which are coupled to form a fluid path.
[0021] In the illustrated example, the first connector portion 210 permits fluid flow between the patient or other parts of the infusion set. In the illustrated example, the first connector portion 210 includes an adhesive pocket or end 212 that is connected to a mating tube or luer connector. In some embodiments, the tube may be adhered to the first connector portion 210 at the adhesive pocket or end 212. As shown, the mating tube or luer connector may be in fluid communication with a flow path 216a. In some embodiments, the flow path 216a may be in fluid communication with an annular flow path 216b defined in the body of the first connector portion 210. Thus, fluid can enter and exit the fluid connector 200 through the mating luer connector via the flow paths 216a, 216b defined in the first connector portion 210.
[0022] Further, the second connector portion 240 permits the inflow and outflow of fluid between the fluid source or other parts of the infusion set. In the illustrated example, the second connector portion 240 may be connected to the fluid source or other parts of the infusion set. In the illustrated example, the second connector portion 240 includes an adhesive pocket or end 242 that is connected to a mating tube or luer connector. In some embodiments, the tube may be adhered to the second connector portion 240 at the adhesive pocket or end 242. As shown, the mating tube or luer connector may be in fluid communication with a flow path 246. Fluid can be supplied to and discharged from the fluid connector 200 through the second mating luer connector via the flow path 246 defined in the second connector portion 240.
[0023] During operation, the first connector portion 210 and the second connector portion 240 can be coupled to allow flow between them. In the illustrated example, the first connector portion 210 can define a mating opening 218 that is in fluid communication with an annular flow path 216b. As described in the present disclosure, the flow path 216b is in fluid communication with the flow path 216a and can be in fluid communication with a tube or other infusion set component connected to the end 212 of the first connector portion 210. Similarly, the second connector portion 240 can define a mating opening 248 that is in fluid communication with a flow path 246, and the flow path 246 can be in fluid communication with a tube or other infusion set component connected to the end 242 of the second connector portion 240. When the first connector portion 210 and the second connector portion 240 are coupled, fluid can flow between the mating opening 218 of the first connector portion 210 and the mating opening 248 of the second connector portion 240, and flow can be enabled between the first connector portion 210 and the second connector portion 240.
[0024] In some embodiments, the first connector portion 210 can include one or more alignment features 223 for aligning the structures of the first connector portion 210 and the second connector portion 240 to facilitate physical coupling between the first connector portion 210 and the second connector portion 240 and to facilitate fluid communication therebetween. In some embodiments, the alignment feature 223 can include protrusions that extend radially from the body of the first connector portion 210.
[0025] In the illustrated example, the first connector portion 210 and the second connector portion 240 each include valve members 230, 260 that control the flow through the connector 200, respectively. In particular, the valve members 230 and 260 allow fluid flow between the first connector portion 210 and the second connector portion 240 when the first connector portion 210 and the second connector portion 240 are connected and prevent fluid flow when the first connector portion 210 and the second connector portion 240 are disconnected.
[0026] In the illustrated example, the first valve member 230 is movable within the valve cavity 214 to allow and prevent flow through the mating opening 218. In the closed position, the first valve member 230 can block, close, or seal the mating opening 218 to prevent flow through it. In some embodiments, the first valve member 230 may include a seal 232 positioned between the first valve member 230 and the valve cavity 214 to isolate the mating opening 218 in the sealed position. When operating, the first valve member 230 may move within the valve cavity 214 by being positioned away from the mating opening 218, allowing flow through the mating opening 218. In some embodiments, the first valve member 230 may move toward the end 212 of the first connector portion 210 to allow flow through the mating opening 218. Optionally, the valve cavity 214 generally has a cylindrical space that can direct the flow radially outward to the fitting opening 218. In some embodiments, the first valve member 230 includes a bias member 234 that biases the first valve member 230 to a closed position. As shown in the figure, the fitting of the first connector portion 210 and the second connector portion 240 allows the first valve member 230 to be displaced to a flow position to allow flow through the fitting opening 218.
[0027] In the illustrated example, the second valve member 260 is movable within the valve cavity 244 to allow and prevent flow through the mating opening 248. In the closed position, the second valve member 260 can block, close, or seal the mating opening 248 to prevent flow through it. When operating, the second valve member 260 can move within the valve cavity 244 by being positioned away from the mating opening 248, allowing flow through the mating opening 248. In some embodiments, the second valve member 260 can move toward the end 242 of the second connector portion 240 to allow flow through the mating opening 248. Optionally, the valve cavity 244 generally has an annular space that can guide flow radially inward to the mating opening 248. In some embodiments, the second valve member 260 includes a bias member 264 that biases the second valve member 260 to the closed position. As shown in the figure, the second valve member 260 can be displaced to a flow position to allow flow through the fitting opening 248 by fitting the first connector portion 210 and the second connector portion 240.
[0028] In the illustrated example, the first connector portion 210 and the second connector portion 240 can be engaged to fix or hold the first connector portion 210 and the second connector portion 240. As shown, the first connector portion 210 and the second connector portion 240 can be joined by fixing a portion of the first connector portion 210 around the second connector portion 240. In the illustrated example, the first connector portion 210 includes or defines one or more mating fingers 220. As shown, the mating fingers 220 extend axially outward from the end 212 of the first connector portion 210. Optionally, the mating fingers 220 may be circumferentially arranged around the annular flow channel 216b and / or mating opening 218 of the first connector portion 210. In some embodiments, the mating fingers 220 may define ridges or lips 222 that extend radially inward toward the flow path 216b and / or mating opening 218, respectively. Similarly, the second connector portion 240 defines a ridge 252. Optionally, the ridge 252 may be circumferentially positioned around the flow path 246 and / or mating opening 248 of the second connector portion 240. When operated, the mating fingers 220 of the first connector portion 210 may engage with the ridge 252 of the second connector portion 240 to connect the first connector portion 210 and the second connector portion 240. In some embodiments, the lips 222 of the mating fingers 220 may engage with the ridge 252 of the second connector portion 240.
[0029] In the illustrated example, the mating fingers 220 and / or lip 222 of the first connector portion 210 engage with the ridge 252 of the second connector portion 240, resisting movement of the first connector portion 210 and the second connector portion 240 toward each other. The engagement of the mating fingers 220 with the ridge 252 may define a snap mating between the first connector portion 210 and the second connector portion 240 in some embodiments of this disclosure. In some embodiments, the mating fingers 220 may be deformable to facilitate engagement with or disengagement from the ridge 252.
[0030] The mating fingers 220 are configured to resist separation of the first connector portion 210 and the second connector portion 240, but the mating fingers 220 and / or the ridge 252 are also configured to separate the first connector portion 210 and the second connector portion 240 if a force exceeding a threshold force is applied between them. In some embodiments of this disclosure, the threshold force for separating the first connector portion 210 and the second connector portion 240 is approximately 5 pounds (22.25 Newtons) or more. Separation of the first connector portion 210 and the second connector portion 240 may occur when the mating fingers 220 of the first connector portion 210 are biased or bent in a direction that disengages them from the ridge 252. In the illustrated example, the first connector portion 210 and the second connector portion 240 can be separated while maintaining a state in which the first connector portion 210 and the second connector portion 240 can be reconnected to each other. In some embodiments, the resistance or force required to assemble and separate the first connector portion 210 and the second connector portion 240 can be set such that the force required to assemble the first connector portion 210 and the second connector portion 240 is less than the force required to separate the first connector portion 210 and the second connector portion 240.
[0031] During operation, the connector 200 can prevent unintended disconnection of the first connector portion 210 and the second connector portion 240 in certain applications, such as high-pressure fluid injection. In the illustrated example, the connector 200 can utilize the fluid flow to generate a hydrodynamic force to selectively prevent the mating fingers 220 of the first connector portion 210 from disengaging from the ridge 252 of the second connector portion 240.
[0032] In the illustrated example, the first connector portion 210 may carry fluid along the channels 216a and 216b to generate or act on an outward radiating force that holds the second connector portion 240 relative to the first connector portion 210. As shown in the illustration, the channel 216b may include one or more bends to generate or act on an outward radiating force, a normal force (or a component thereof) relative to the first connector portion 210 and the second connector portion 240. In some embodiments, the channel 216b may include one bend to guide the flow to the mating opening 218 of the first connector portion 210. Optionally, the mating opening 218 may be positioned substantially orthogonal to a portion of the channel 216b such that the flow from the channel 216b to the mating opening 218 is substantially orthogonal. As shown in the figure, the mating opening 218 can be axially aligned with the mating structure of the connector 200, such as the mating fingers 220 of the first connector portion 210 and the ridge 252 of the second connector portion 240. Thus, in some embodiments, the bending of the flow path 216b for directing the flow into the mating opening 218 can generate or act on the mating fingers 220 of the first connector portion 210 and / or the ridge 252 of the second connector portion 240 in a normal or orthogonal (or other lateral) direction retaining force.
[0033] In the illustrated example, the fluid flow passing through the channels 216a and 216b of the first connector portion 210 may generate or act on the body of the first connector portion 210 with outward radiating forces, normal forces, or orthogonal forces. As shown in the illustration, the fluid flow may generate outward forces on the body of the first connector portion 210 surrounding the annular channel 216b. In some embodiments, the outward forces acting on the body of the first connector portion 210 may cause the body to elastically deform radially or outward. Optionally, when the first connector portion 210 and the second connector portion 240 are coupled or mated, the outward forces acting on the body of the first connector portion 210 may cause the ridge 252 of the second connector portion 240 to elastically deform toward the mating fingers 220 of the first connector portion 210 in order to fix or lock the engagement between the first connector portion 210 and the second connector portion 240.
[0034] In some embodiments, the housing cover 250 may be aligned with the mating fingers 220 to selectively prevent radial or outward elastic deformation of the mating fingers 220. When operating, the mating fingers 220 and the ridge 252 are held between the housing cover 250 and the body of the first connector portion 210 as they are biased radially outward toward the housing cover 250 by the body of the first connector portion 210, thereby preventing the mating fingers 220 from disengaging from the ridge 252 of the second connector portion 240. In some embodiments, the housing cover 250 may allow radial or outward elastic deformation of the mating fingers 220 if the fluid pressure does not sufficiently bias the body of the first connector portion 210 outward, allowing the mating fingers 220 to disengage from the ridge 252 of the second connector portion 240. In some embodiments, the housing cover 250 may be rotationally separated from the second connector portion 240 and may be freely rotatable relative to the second connector portion 240.
[0035] As described in this disclosure, the fluid flow passing through the first connector portion 210 and the resulting fluid pressure can prevent unintended separation of the first connector portion 210 and the second connector portion 240. In some embodiments, the connector 200 can prevent unintended separation of the first connector portion 210 and the second connector portion 240 due to a large separating force caused by high fluid pressure. As an advantage, as the fluid pressure passing through the connector 200 increases, the retaining force between the first connector portion 210 and the second connector portion 240 also increases. In some embodiments, the retaining force between the first connector portion 210 and the second connector portion 240 increases proportionally to the fluid pressure. In some embodiments, the connector 200 can be configured to maintain a coupled or engaged state even under high pressure or power injection (about 325 psi or more). Furthermore, the connector 200 may be configured to maintain a coupled or engaged state in accordance with the fluid pressure passing through the connector 200, even when exposed to external separating forces (such as unintentionally pulling the connector). In some embodiments, the amount of external separating force that the connector 200 can resist may be proportional to the fluid pressure passing through the connector 200.
[0036] Figure 5 shows a cross-sectional view of the fluid connector 300 in a disconnected state according to an embodiment of this disclosure. Figure 6 shows an exploded view of the fluid connector 300 of Figure 5 according to an embodiment of this disclosure. Figure 7 shows a cross-sectional view of the fluid connector 300 of Figure 5 in a connected state according to an embodiment of this disclosure. Referring to Figures 5 through 7, the fluid connector 300 similarly provides a fluid pathway to the patient while allowing for a "fuse link" or quick disconnect, enabling controlled disconnection in the event of excessive force, and further enabling the connection to be maintained during high-pressure injection or other procedures.
[0037] As shown in the figure, the fluid connector 300 provides a flow path or fluid path from one end of the fluid connector 300 to the opposite end of the fluid connector 300. As shown in the figure, the fluid connector 300 includes a first connector portion 320 and a second connector portion 340 which are coupled to form a fluid path.
[0038] In the illustrated example, the first connector portion 320 allows fluid flow to and from the patient or other parts of the infusion set. The first connector portion 320 includes a tubing portion 310 that defines an adhesive pocket or end 312 connected to a mating tube or Luer connector. In some embodiments, the tube may be bonded to the first connector portion 320 at the adhesive pocket or end 312 of the tubing portion 310. As shown, the tubing portion 310 may be in fluid communication with a flow path 326a. In some embodiments, the flow path 326a may be in fluid communication with one or more flow paths 326b defined in the body of the first connector portion 320. Thus, fluid may enter and exit the fluid connector 300 through the mating Luer connector via the flow paths 326a and 326b defined in the tubing portion 310 and the first connector portion 320.
[0039] Furthermore, the second connector portion 340 allows fluid flow to and from the fluid source or other parts of the infusion set. In the illustrated example, the second connector portion 340 may be connected to the fluid source or other parts of the infusion set. In the illustrated example, the second connector portion 340 includes an adhesive pocket or end 342 connected to a mating tube or Luer connector. In some embodiments, the tube may be bonded to the second connector portion 340 at the adhesive pocket or end 342. As shown, the mating tube or Luer connector may be in fluid communication with the flow path 346. Fluid may enter and exit the fluid connector 300 through the second mating Luer connector via the flow path 346 defined in the second connector portion 340.
[0040] During operation, the first connector portion 320 and the second connector portion 340 can be coupled to allow flow between them. In the illustrated example, the first connector portion 320 may define one or more fitting openings 328 that are in fluid communication with one or more flow paths 326b. As described herein, flow path 326b may be in fluid communication with flow path 326a to enable fluid communication with a tube or other infusion set component connected to the end 312 of the tube portion 310. Similarly, the second connector portion 340 may define fitting openings 348 that are in fluid communication with flow path 346 and a tube or other infusion set component connected to the end 342 of the second connector portion 340. When the first connector portion 320 and the second connector portion 340 are connected, fluid can flow between the mating opening 328 of the first connector portion 320 and the mating opening 348 of the second connector portion 340, and flow can be made between the first connector portion 320 and the second connector portion 340.
[0041] In the illustrated example, the first connector section 320 and the second connector section 340 each include septums 330 and 360, respectively, which control the flow through the connector 300. In particular, the septums 330 and 360 allow fluid flow between the first connector section 320 and the second connector section 340 when they are connected, and prevent fluid flow when they are disconnected. In some embodiments, the septums 330 and 360 may be made of silicone.
[0042] In the illustrated example, the first septum 330 is movable within the septum cavity 324 to allow and prevent flow through the mating opening 328. In the closed position, the first septum 330 can block, close, or seal the mating opening 328 to prevent flow through it. When operating, the first septum 330 is positioned away from the mating opening 328 and can move within the septum cavity 324, allowing flow through the mating opening 328. In some embodiments, the first septum 330 can move toward the tubular portion 310 to allow flow through the mating opening 328. Optionally, the septum cavity 324 may generally have a cylindrical space that can direct flow radially outward toward the mating opening 328. In some embodiments, the first septum 330 includes a pleated or bellows portion 334 that biases the first septum 330 to a closed position. As shown in the figure, when the first connector portion 320 and the second connector portion 340 are mated, the first septum 330 may be displaced to a flow position, allowing flow through the mating opening 328. In some embodiments, the first septum 330 may include one or more air channels 333 that allow the bellows portion 334 and / or the first septum 330 in general to expand and contract as it moves between the closed position and the flow position. The air channels 333 of the first septum 330 may be in fluid communication with the environment via air channels 323, 313 located within the first connector portion 320 and the tubing portion 310, respectively.
[0043] In the illustrated example, the second septum 360 is movable within the valve cavity 344 to allow or prevent flow through the mating opening 348. In the closed position, the second septum 360 can block, close, or seal the mating opening 348 to prevent flow through it. When operating, the second septum 360 is positioned away from the mating opening 348 so as to be movable within the valve cavity 344, and can allow flow through the mating opening 348. In some embodiments, the second septum 360 can move toward the end 342 of the second connector portion 340 to allow flow through the mating opening 348. Optionally, the valve cavity 344 may generally have an annular space that can guide flow radially inward to the mating opening 348. In some embodiments, the second septum 360 includes a pleated or bellows portion 364 for biasing the second septum 360 to a closed position. As shown in the figure, when the first connector portion 320 and the second connector portion 340 are mated, the second septum 360 may be displaced to a flow position, allowing flow through the mating opening 348. In some embodiments, the second septum 360 may include one or more air channels that allow the bellows portion 364 and / or the second septum 360 in general to expand and contract as it moves between the closed position and the flow position. The air channels of the second septum 360 may be in fluid communication with the environment via an air channel 343 located within the second connector portion 340.
[0044] In the illustrated example, the first connector portion 320 and the second connector portion 340 can be engaged to fix or hold the first connector portion 320 and the second connector portion 340 in a joined state. As shown, the first connector portion 320 and the second connector portion 340 can be joined by fixing a portion of the first connector portion 320 within the second connector portion 340. In the illustrated example, the first connector portion 320 includes or defines one or more snap engagement portions 321. As shown, the snap engagement portions 321 extend radially outward from the body of the first connector portion 320. Optionally, the snap engagement portions 321 may be circumferentially arranged around the flow path 326b and / or mating opening 328 of the first connector portion 320. Furthermore, as shown, the second connector portion 340 may include a mating ring 350 that receives a portion of the first connector portion 320. The mating ring 350 may define a groove 351. Optionally, the groove 351 may be circumferentially positioned around the flow path 346 and / or mating opening 348 of the second connector portion 340. When operated, the snap engagement portion 321 of the first connector portion 320 may engage with the groove 351 of the mating ring 350 of the second connector portion 340 to connect the first connector portion 320 and the second connector portion 340.
[0045] In the illustrated example, the snap engagement portion 321 of the first connector portion 320 engages with the groove 351 of the mating ring 350 of the second connector portion 340, resisting movement of the first connector portion 320 and the second connector portion 340 toward each other. In some embodiments, the snap engagement portion 321 or the groove 351 may be deformed to facilitate engagement or disengagement of the snap engagement portion 321 and the groove 351.
[0046] The snap engagement portion 321 and groove 351 are configured to resist separation of the first connector portion 320 and the second connector portion 340, but the snap engagement portion 321 and / or groove 351 are also configured to separate the first connector portion 320 and the second connector portion 340 if a force exceeding a threshold is applied between them. In some embodiments of this disclosure, the threshold force for separating the first connector portion 320 and the second connector portion 340 is approximately 5 pounds (22.25 Newtons) or more. Separation of the first connector portion 320 and the second connector portion 340 may occur when the snap engagement portion 321 of the first connector portion 320 is biased or bent in a direction that disengages it from the groove 351. In the illustrated example, the first connector portion 320 and the second connector portion 340 can be separated while maintaining a state in which the first connector portion 320 and the second connector portion 340 can be reconnected to each other. In some embodiments, the resistance or force required to assemble and separate the first connector portion 320 and the second connector portion 340 may be configured such that the force required to assemble the first connector portion 320 and the second connector portion 340 is less than the force required to separate the first connector portion 320 and the second connector portion 340.
[0047] During operation, the connector 300 can prevent unintended disconnection of the first connector portion 320 and the second connector portion 340 in certain applications, such as high-pressure fluid injection. In the illustrated example, the connector 300 may utilize the fluid flow to generate a fluid force to selectively prevent the snap engagement portion 321 of the first connector portion 320 from disengaging from the groove 351 of the mating ring 350 of the second connector portion 340.
[0048] In the illustrated example, the first connector portion 320 may carry fluid along the channels 326a, 326b to generate or act on an outward radiating force that holds the second connector portion 340 relative to the first connector portion 320. As shown in the illustration, the channel 326b may define one or more bends or inclines to generate or act on the first connector portion 320 and the second connector portion 340 with outward radiating forces or normal force components. In some embodiments, the channel 326b may include an incline 326c for directing the flow to a mating opening 328 of the first connector portion 320. Optionally, the mating opening 328 may be positioned substantially perpendicular to a portion of the channel 326b to allow the incline 326c to include a perpendicular component in the flow as it directs the flow to the mating opening 328. As shown in the figure, the mating opening 328 may be axially aligned with the mating structure of the connector, such as the snap engagement portion 321 of the first connector portion 320 and the groove 351 of the mating ring 350. Thus, in some embodiments, the inclined portion 326c in the flow path for directing the flow to the mating opening 328 may generate or act on a retaining force including a normal or orthogonal component with respect to the snap engagement portion 321 of the first connector portion 320 and / or the groove 351 of the mating ring 350 of the second connector portion 340.
[0049] In the illustrated example, the fluid flow passing through the flow path 326b and / or the inclined portion 326c of the first connector portion 320 may generate or act on the body of the first connector portion 320 with outward radiating forces, normal forces, or orthogonal force components. As shown in the illustration, the fluid flow may generate outward forces on the body of the first connector portion 320 surrounding the flow path 326b and the inclined portion 326c. In some embodiments, the outward forces acting on the body of the first connector portion 320 may cause the body to elastically deform radially or outward. Optionally, when the first connector portion 320 and the second connector portion 340 are coupled or mated, the snap engagement portion 321 of the first connector portion 320 may be elastically deformed toward the groove 351 or mating ring 350 of the second connector portion 340 by an outward force acting on the body of the first connector portion 320 in order to fix or lock the engagement between the first connector portion 320 and the second connector portion 340.
[0050] As described in this disclosure, the fluid flow passing through the first connector portion 320 and the resulting fluid pressure can prevent unintended separation of the first connector portion 320 and the second connector portion 340. In some embodiments, the connector 300 can prevent unintended separation of the first connector portion 320 and the second connector portion 340 due to a large separating force caused by high fluid pressure. An advantage is that the connector 300 can isolate forces, and as the fluid pressure passing through the connector 300 increases, the retaining force between the first connector portion 320 and the second connector portion 340 also increases, thereby enabling a stable flow. In some embodiments, the retaining force between the first connector portion 320 and the second connector portion 340 increases in proportion to the fluid pressure. In some embodiments, the connector 300 can be configured to maintain a coupled or engaged state even under high pressure or power injection (about 325 psi or more). Furthermore, the connector 300 may be configured to maintain a coupled or engaged state in accordance with the fluid pressure passing through the connector 300, even when exposed to external separating forces, such as unintentional pulling of the connector. In some embodiments, the amount of external separating force that the connector 300 can resist may be proportional to the fluid pressure passing through the connector 300. Explanation of this technology under its terms
[0051] This technology is illustrated in the various embodiments described below. For convenience, examples of these various embodiments of the technology are given as numbered clauses (1, 2, 3, etc.). These are illustrative and not limiting to the technology. Dependent clauses may be combined with each other in any combination and incorporated into independent clauses, for example, Clause 1 or Clause 5. Other clauses may be described in a similar manner.
[0052] Clause 1. A connector comprising a first connector portion, the first connector portion comprising a connector housing, the connector housing comprising a connector body defining a tube opening and a mating opening, and an engaging portion at least partially surrounding the connector body, the connector body defining a flow path between the tube opening and the mating opening, the engaging portion defining a mating lip extending radially toward the connector body, the mating lip configured to engage the connector housing detachably from the mating connector portion, the flow path comprising at least one portion normal to the engaging portion, the fluid flow passing through the flow path acting a force normal to the connector housing to prevent the connector housing from disengaging from the mating connector portion.
[0053] Clause 2. The connector according to Clause 1, wherein the flow path defines at least one bend.
[0054] Clause 3. The connector according to Clause 1, wherein the mating opening is positioned perpendicular to a portion of the flow path.
[0055] Clause 4. The connector according to Clause 1, wherein the flow path includes a central portion adjacent to the tube opening.
[0056] Clause 5. The connector according to Clause 1, wherein the flow path includes an annular portion adjacent to the mating opening.
[0057] Clause 6. The connector according to Clause 5, wherein the fluid flow from the annular portion of the flow path to the fitting opening exerts a force on the connector housing in the normal direction.
[0058] Clause 7. The connector according to Clause 1, wherein the flow path includes an inclined portion adjacent to the mating opening.
[0059] Clause 8. The connector according to Clause 7, wherein the fluid flow from the inclined portion of the flow path to the fitting opening exerts a force in the normal direction on the connector housing.
[0060] Clause 9. The connector according to Clause 1, wherein the first connector portion further includes a movable seal, the movable seal configured to selectively prevent fluid flow through the mating opening and to move to allow fluid flow through the mating opening.
[0061] Clause 10. The connector according to Clause 9, wherein the movable seal is located within the cavity of the connector body.
[0062] Clause 11. The connector according to Clause 9, wherein the movable seal is biased toward the mating opening by a bias member.
[0063] Clause 12. The connector described in Clause 9, wherein the movable seal includes a bellows.
[0064] Clause 13. The connector according to Clause 1, further comprising a second connector portion defining a second tube opening and a second mating opening, wherein the second connector portion defines a second flow path between the second mating opening and the tube opening, and when the first connector portion and the second connector portion are engaged, the mating opening of the first connector portion and the second mating opening of the second connector portion are in fluid communication, and the first connector portion and the second connector portion are configured to be in a separable engaged state when the fluid flow through the flow path is less than a critical flow rate, and to be in a locked engaged state when the fluid flow through the flow path exceeds a critical flow rate.
[0065] Clause 14. The connector according to Clause 13, wherein the fluid flow passing through the second channel acts a force normal to the connector housing and the second connector portion, preventing the first connector portion from detaching from the second connector portion.
[0066] Clause 15. The connector according to Clause 13, wherein the second connector portion extends into the cavity of the connector body of the first connector portion.
[0067] Clause 16. The connector according to Clause 13, wherein the second connector portion further includes a second movable seal, the second movable seal configured to selectively prevent fluid flow through the second mating opening and to move to allow fluid flow through the second mating opening.
[0068] Clause 17. The connector according to Clause 13, wherein the second connector portion further includes a second engaging portion, the second engaging portion defining a second mating lip extending radially outward from the second connector portion, the second mating lip being configured to engage detachably with the mating lip of the first connector portion.
[0069] Clause 18. A connector comprising a first connector portion and a second connector portion, The first connector portion defines a tube opening and a mating opening, A connector comprising: a first connector portion defining a flow path between the tube opening and the fitting opening; a second connector portion defining a second tube opening and a second fitting opening; the second connector portion defining a second flow path between the second fitting opening and the tube opening; the fitting opening of the first connector portion and the second fitting opening of the second connector portion being in fluid communication when the first connector portion and the second connector portion are engaged; the flow path or the second flow path including at least one portion that is normal to the overlapping portion of the first connector portion and the second connector portion; and the fluid flow passing through the flow path or the second flow path acting a force normal to the overlapping portion of the first connector portion and the second connector portion, thereby preventing the first connector portion and the second connector portion from separating.
[0070] Clause 19. The connector according to Clause 18, wherein the first connector portion and the second connector portion are configured to be in a separable engaged state when the fluid flow through the channel or the second channel is less than a critical flow rate, and to be in a locked engaged state when the fluid flow through the channel or the second channel exceeds a critical flow rate.
[0071] Clause 20. The connector according to Clause 18, wherein the first connector portion includes a movable seal configured to selectively prevent fluid flow through the mating opening and to move to allow fluid flow through the mating opening, and the second connector portion includes a second movable seal configured to selectively prevent fluid flow through the second mating opening and to move to allow fluid flow through the second mating opening. Further considerations
[0072] In some embodiments, any provision of this disclosure may be dependent on any independent provision or any dependent provision. In one embodiment, any provision (e.g., a dependent provision or an independent provision) may be combined with one or more other provisions (e.g., dependent provisions or independent provisions). In one embodiment, a claim may include some or all of the words (e.g., steps, operations, means, or components) contained in a provision, sentence, phrase, or paragraph. In one embodiment, a claim may include some or all of the words contained in one or more provisions, sentences, phrases, or paragraphs. In one embodiment, some of the words contained in each provision, sentence, phrase, or paragraph may be deleted. In one embodiment, additional words or elements may be added to a provision, sentence, phrase, or paragraph. In one embodiment, the technology may be implemented without using some of the components, elements, functions, or operations described in this disclosure. In one embodiment, the technology may be implemented using additional components, elements, functions, or operations.
[0073] This disclosure is provided to enable those skilled in the art to implement the various embodiments described herein. This disclosure provides various examples of the art, and the art is not limited to these examples. Various modifications to these embodiments will be readily understood by those skilled in the art, and the general principles defined herein may also apply to other embodiments.
[0074] When referring to an element in the singular form, it should be understood to mean "one or more" unless otherwise specified, not "one and only one." Unless otherwise specified, the term "some" refers to "one or more." Masculine pronouns (e.g., his) include feminine and neuter pronouns (e.g., her and its), and vice versa. Headings and subheadings are provided for convenience, if used, and do not limit the invention.
[0075] The term “exemplary” means “provided as an example or illustration” in this disclosure. Embodiments or designs described as “exemplary” in this disclosure should not necessarily be construed as being preferable or advantageous to other embodiments or designs. In one embodiment, various alternative configurations and operations described herein may be considered at least equivalent.
[0076] The term "aspect" does not mean that this aspect is essential to the Art, nor does it mean that this aspect applies to all configurations of the Art. Disclosures relating to aspects may apply to all configurations, or to one or more configurations. An aspect provides one or more examples. The term "aspect" may refer to one or more aspects, and vice versa. The term "embodiment" does not mean that this embodiment is essential to the Art, nor does it mean that this embodiment applies to all configurations of the Art. Disclosures relating to embodiments may apply to all embodiments, or to one or more embodiments. An embodiment provides one or more examples. The term "embodiment" may refer to one or more embodiments, and vice versa. The term "configuration" does not mean that this configuration is essential to the Art, nor does it mean that this configuration applies to all configurations of the Art. Disclosures relating to configurations may apply to all configurations, or to one or more configurations. A configuration provides one or more examples. The term "composition" can refer to one or more compositions, and vice versa.
[0077] In one embodiment, unless otherwise specified, all measurements, values, evaluations, locations, sizes, dimensions, and other specifications described in this specification (including subsequent claims) are approximate and not precise. In one embodiment, they are intended to have a reasonable range consistent with the relevant function and the scope conventionally used in the art.
[0078] In one aspect, the term "coupled" or similar expression may refer to direct connection. In another aspect, "coupled" or similar expression may refer to indirect connection.
[0079] Where terms such as “top,” “bottom,” “front,” and “rear” are used in this disclosure, they should be understood to refer to an arbitrary reference frame rather than the normal direction of gravity. Thus, the top, bottom, front, and rear surfaces may extend upward, downward, obliquely, or horizontally within the gravity reference frame.
[0080] Various elements may be arranged in different ways (for example, in different orders or divided in different ways). All of these can be implemented without departing from the scope of the present art. All structural and functional equivalents to elements of various aspects described herein that are known or hereafter known to those skilled in the art are expressly incorporated by reference into this disclosure and are intended to be included in the claims. Furthermore, nothing in this disclosure is intended to be made public, and is intended to be included in the claims whether or not it is expressly described in the claims. No claim element is intended to be construed under the provisions of 35 USC §112, sixth paragraph, except when an element is expressly described in the phrase “means for” or in a method claim in the phrase “step for.” Furthermore, “include,” “have,” or similar terms are intended to be used in an inclusive sense and are construed in the same way as when “comprise” is used as a claim transition word.
[0081] The title, background art, summary of the invention, brief description of the drawings, and abstract of this disclosure are incorporated into this disclosure and provided as illustrative examples of the disclosure, and are not limiting statements. They are not to be used to limit the scope or meaning of the claims. Furthermore, in the detailed description, descriptions are provided illustratively, and various features are grouped together in various embodiments, for the purpose of simplifying the disclosure. Such a method of disclosure should not be construed as indicating an intention that the claimed invention requires features beyond those explicitly stated in each claim. Rather, as the following claims show, the inventive subject matter resides not in all features of a single disclosed configuration or operation, but in a part thereof. The following claims are incorporated into the detailed description of this disclosure and each stands alone as an inventive subject matter claimed individually.
[0082] The claims are not intended to be limited to the embodiments described herein, but are intended to be construed in a manner consistent with the language of the claims and to encompass all legal equivalents. However, no claim is intended, nor should it be construed, to encompass subject matter that does not meet the requirements of Section 101, 102, or 103 of the U.S. Patent Act.
Claims
1. A connector comprising a first connector portion, The first connector portion includes a connector housing, The connector housing is A connector body defining a tube opening and a mating opening, wherein the connector body defines a flow path between the tube opening and the mating opening. The connector comprises an engaging portion that at least partially surrounds the connector body and defines a mating lip that extends radially toward the connector body, The mating lip is configured to engage the connector housing so as to be detachable from the mating connector portion. A connector in which the flow path includes at least one portion that is normal to the engaging portion, and the fluid flow passing through the flow path acts a force normal to the connector housing, thereby preventing the connector housing from separating from the mating connector portion.
2. The connector according to claim 1, wherein the flow path defines at least one bend.
3. The connector according to claim 1, wherein the fitting opening is arranged perpendicular to a part of the flow path.
4. The connector according to claim 1, wherein the flow path includes a central portion adjacent to the tube opening.
5. The connector according to claim 1, wherein the flow path includes an annular portion adjacent to the fitting opening.
6. The connector according to claim 5, wherein the fluid flow from the annular portion of the flow path to the fitting opening exerts a force in the normal direction on the connector housing.
7. The connector according to claim 1, wherein the flow path includes an inclined portion adjacent to the fitting opening.
8. The connector according to claim 7, wherein the fluid flow from the inclined portion of the flow path to the fitting opening exerts a force in the normal direction on the connector housing.
9. The first connector portion further includes a movable seal, The connector according to claim 1, wherein the movable seal is configured to selectively prevent fluid flow through the mating opening and to move to allow fluid flow through the mating opening.
10. The connector according to claim 9, wherein the movable seal is disposed within the cavity of the connector body.
11. The connector according to claim 9, wherein the movable seal is biased toward the mating opening by a bias member.
12. The connector according to claim 9, wherein the movable seal includes a bellows.
13. The device further comprises a second connector portion defining a second tube opening and a second mating opening, The second connector portion defines a second flow path between the second fitting opening and the tube opening, The mating opening of the first connector portion and the second mating opening of the second connector portion are in fluid communication when the first connector portion and the second connector portion are engaged. The connector according to claim 1, wherein the first connector portion and the second connector portion are configured to be in a separable engaged state when the fluid flow passing through the channel is less than a critical flow rate, and to be in a locked engaged state when the fluid flow passing through the channel exceeds a critical flow rate.
14. The connector according to claim 13, wherein the fluid flow passing through the second channel acts a force normal to the connector housing and the second connector portion, preventing the first connector portion from detaching from the second connector portion.
15. The connector according to claim 13, wherein the second connector portion extends into the cavity of the connector body of the first connector portion.
16. The connector according to claim 13, wherein the second connector portion further includes a second movable seal, the second movable seal being configured to selectively prevent fluid flow through the second mating opening and to move to allow fluid flow through the second mating opening.
17. The connector according to claim 13, wherein the second connector portion further includes a second engaging portion, the second engaging portion defines a second mating lip extending radially outward from the second connector portion, and the second mating lip is configured to engage detachably with the mating lip of the first connector portion.
18. It is a connector, A first connector portion that defines a tube opening and a fitting opening, and defines a flow path between the tube opening and the fitting opening, The second connector portion comprises a second tube opening and a second fitting opening, and a second flow path between the second fitting opening and the tube opening, The mating opening of the first connector portion and the second mating opening of the second connector portion are in fluid communication when the first connector portion and the second connector portion are engaged. The aforementioned flow path or the second flow path includes at least one portion that is normal to the overlapping portion of the first connector portion and the second connector portion, and the fluid flow passing through the aforementioned flow path or the second flow path applies a force normal to the overlapping portion of the first connector portion and the second connector portion, thereby preventing the first connector portion and the second connector portion from separating.
19. The connector according to claim 18, wherein the first connector portion and the second connector portion are configured to be in a separable engaged state when the fluid flow passing through the channel or the second channel is less than a critical flow rate, and to be in a locked engaged state when the fluid flow passing through the channel or the second channel exceeds a critical flow rate.
20. The connector according to claim 18, wherein the first connector portion includes a movable seal configured to selectively prevent fluid flow through the mating opening and to move to allow fluid flow through the mating opening, and the second connector portion includes a second movable seal configured to selectively prevent fluid flow through the second mating opening and to move to allow fluid flow through the second mating opening.