Dispensing systems and devices having anti-clogging jet tips for dispensing two or more fluids that react together

Abstract

A spray tip for dispensing fluids that react together includes a first lumen for a first fluid, a second lumen for a second fluid, and a dispensing tip cap at distal ends of the respective first and second lumens and defining a distal end of the spray tip. The dispensing tip cap includes a distal end wall defining a closed end of the dispensing tip cap, a first spray opening formed in the distal end wall in fluid communication with the first lumen, a second spray opening formed in the distal end wall in fluid communication with the second lumen, and an outer partition wall projecting distally from the distal end wall of the dispensing tip cap and extending between the first and second spray openings to form a barrier between the first and second spray openings.

Description

BACKGROUND TECHNICAL FIELD

[0002] The present patent application relates generally to medical devices for dispensing fluids, and more particularly to fluid dispensing systems having a spray tip that dispenses fluids used in medical procedures and surgical operations.

[0003] Description of Related Art

[0004] In recent years, minimally invasive surgical (MIS) techniques have become an alternative to traditional surgical techniques to perform a variety of surgical procedures. MIS procedures differ from traditional surgical procedures in that multiple devices and / or surgical tools can be introduced into a body through a cannula and trocar inserted into a small incision. As a result, trauma to the body is greatly reduced, thereby shortening the patient's recovery time.

[0005] One type of minimally invasive surgical procedure involves laparoscopic surgery for treating hernias, colonic disease, gastroesophageal reflux disease, gallbladder disorders, and the like. Typically, a patient undergoing laparoscopic surgery is able to go home a few hours after the procedure.

[0006] One challenge that arises when performing minimally invasive surgical procedures involves controlling bleeding at the surgical site. In contrast to traditional open surgical procedures, during laparoscopic surgery, the surgeon has greatly reduced access to the surgical site or surgical cavity.

[0007] In response, the use of tissue sealants and other bioadhesive materials has become a technique for closing incisions at the surgical site. Tissue sealants can include fibrin sealants, which are composed of thrombin and fibrinogen materials, although other formulations are available. Typically, the individual components of the tissue sealant are separately stored in isolated reservoirs. These components are mixed together for the first time immediately prior to being applied to the tissue. Once mixed, the components coagulate very rapidly, producing an adhesive gel in a short period of time, such as within 10 to 20 seconds. The rapid coagulation properties of tissue sealants are advantageous when a large amount of access to the application site is available. However, the rapid onset properties of tissue sealants often clog the spray tip used to dispense the components.

[0008] Additionally, the manufacture of flexible accessories for delivering two component materials to an in vivo location is difficult. The components of the material are stored independently in a dual syringe and extruded by the dual syringe, which requires a minimum distance between the outlet holes of the dual syringe. To function, the flexible cannula must be significantly smaller than the minimum distance between the outlet holes of the dual syringe, which results in two physically separate fluid paths being brought together to fit through the cannula or trocar.

[0009] Various devices for jetting fluids are disclosed in U.S. Patent No. 7,694,944, U.S. Patent No. 5,152,460, U.S. Patent No. 6,547,161, U.S. Patent No. 6,612,506, U.S. Patent No. 5,526,981, and U.S. Patent No. 7,163,160.

[0010] Medical devices for jetting at least two fluid components that react together quickly are disclosed in U.S. Patent No. 6,432,084 and U.S. Patent Application Publication No. 2009 / 0108091. However, the above references do not address the performance of the medical devices when performing the jetting proximate to a target site.

[0011] Commercially available jet tips for atomizing tissue sealants typically operate by mixing the components of the tissue sealant inside the jet tip and prior to the jetting. Due to the rapid onset properties of the biological agent, the jet tip typically becomes clogged as soon as the flow of fluid through the jet tip is stopped (e.g., typically within one to two seconds). Once the jet tip becomes clogged, they cannot be used to atomize the biological agent and must be replaced with a new jet tip.

[0012] In view of the above deficiencies, there is a need for a dispensing device having a jet tip that provides the surgeon with the ability to jet a biological agent and a rapid onset tissue sealant, evaluate the results of the jetting (e.g., whether hemostasis was achieved?), and then continue jetting without the need to replace the jet tip. Meeting this need is particularly valuable in minimally invasive surgical / robotic surgical procedures where removing the device to replace the jet tip and repositioning the device to perform the jetting is a more time consuming procedure.

[0013] Further, there is a need for improved anti-clogging jet tips for dispensing tissue sealants onto tissue.

[0014] Additionally, there is a need for a medical device for jetting two components that react together quickly when proximate to a target surface.

[0015] There is also a need for a device that can effectively deliver a multi-component tissue sealant from a remote location to a location in the body, whereby the device can be easily and reproducibly manufactured. SUMMARY

[0016] In one embodiment, a spray tip for dispensing fluids for reaction together preferably includes a first lumen for a first fluid, a second lumen for a second fluid, and a dispensing tip cap at distal ends of the respective first and second lumens, which advantageously defines a distal end of the spray tip. In one embodiment, the first and second lumens are adapted to receive components of a tissue sealant and / or other bioadhesive material (e.g., first and second fluids). In one embodiment, the tissue sealant and / or other bioadhesive material is preferably used to control bleeding at a surgical site. In one embodiment, the tissue sealant can include a fibrin sealant, which is composed of thrombin and fibrinogen materials, although other formulations are available.

[0017] In one embodiment, the dispensing tip cap preferably includes a distal end wall defining a closed end of the dispensing tip cap, a first spray aperture formed in the distal end wall in fluid communication with the first lumen, and a second spray aperture formed in the distal end wall in fluid communication with the second lumen. In one embodiment, the dispensing tip cap advantageously includes an outer partition wall projecting distally from a distal face of the distal end wall of the dispensing tip cap and extending between the first and second spray apertures for forming a barrier between the first and second spray apertures. The outer partition wall preferably prevents components of the tissue sealant (e.g., fibrinogen and thrombin) from contacting each other on an outer surface of the dispensing tip cap, which can otherwise cause one or more of the first and second spray apertures to become clogged. In one embodiment, the components of the tissue sealant are first mixed together only after being sprayed from the first and second spray apertures and flowing distally beyond a distal end of the outer partition wall.

[0018] In one embodiment, the first spray aperture preferably includes a first raised mound projecting distally from a distal face of the distal end wall of the dispensing tip cap. A first spray opening can be disposed in the first raised mound. In one embodiment, the second spray aperture preferably includes a second raised mound projecting distally from a distal face of the distal end wall of the dispensing tip cap. A second spray opening can be disposed in the second raised mound. In one embodiment, the outer partition wall has a proximal end fixed to the distal face of the distal end wall and a distal free end distal of respective apexes of the first and second raised mounds for defining a distal-most end of the dispensing tip cap.

[0019] In one embodiment, the first and second raised mounds of the respective first and second spray apertures can include a hydrophobic surface adapted to repel fluids contacting the first and second raised mounds, which preferably minimizes the likelihood of the fluids pooling on an outer surface of the spray apertures to prevent clogging of the spray apertures.

[0020] In one embodiment, the dispensing cap preferably includes a cylindrical body having an open proximal end for coupling with the distal ends of the first and second lumens and a distal end closed by a distal end wall.

[0021] In one embodiment, the distribution top cover may include an internal dividing wall located inside the cylindrical body, which extends between the proximal end and the distal end wall of the cylindrical body and is used to divide the internal area of ​​the distribution top cover into a first chamber connected to the first tubular lumen fluid and a second chamber connected to the second tubular lumen fluid.

[0022] In one embodiment, the distal end wall of the distribution cap advantageously has an inner surface, and the internal partition wall has a distal end fixed to the inner surface of the distal end wall for dividing the inner surface of the distal end wall of the distribution cap into a first area disposed within the first chamber and a second area disposed within the second chamber.

[0023] In one embodiment, the spray tip preferably includes a first fluid passage formed in a first region of the inner surface of the distal end wall of the dispensing cap. The first fluid passage is advantageously in fluid communication with the first spray orifice.

[0024] In one embodiment, the spray tip preferably includes a second fluid passage formed in a second region of the inner surface of the distal end wall of the dispensing cap. The second fluid passage is advantageously in fluid communication with the second spray orifice.

[0025] In one embodiment, the first fluid passage may include a first vortex chamber in fluid communication with the first injection hole and a pair of first grooves extending radially outward from the first vortex chamber. In one embodiment, each of the first grooves has a width that can narrow between its outer end and inner end.

[0026] In one embodiment, the second fluid passage may include a second vortex chamber in fluid communication with the second injection hole and a pair of second grooves extending radially outward from the second vortex chamber. In one embodiment, each of the second grooves has a width that can narrow between its outer end and inner end.

[0027] In one embodiment, the first lumen can contain a first fluid that is directed into a first fluid passage of the dispensing cap. In one embodiment, the first vortex chamber of the first fluid passage is configured to rotate the first fluid before dispensing (e.g., spraying) the first fluid from the first spray orifice.

[0028] In one embodiment, the second lumen can accommodate a second fluid that is directed into the second fluid passage of the dispensing cap. In one embodiment, the second vortex chamber of the second fluid passage is configured to rotate the second fluid before dispensing (e.g., spraying) the second fluid from the second spray hole.

[0029] In one embodiment, the first fluid and the second fluid chemically react together after being dispensed (e.g., ejected) from the respective first and second ejection orifices. In one embodiment, the externally distally extending partition wall preferably serves as a barrier to separate the first fluid and the second fluid from each other until the fluids move distally beyond the distal end of the partition wall.

[0030] In one embodiment, the first groove extends away from each other on opposite sides of the first vortex chamber, and the second groove extends away from each other on opposite sides of the second vortex chamber.

[0031] In one embodiment, the ejection tip for ejecting the tissue sealant preferably has multiple holes (e.g., two ejection openings) for ejecting the components of the tissue sealant. In one embodiment, each biological / reactant component is preferably dispensed through only one of the ejection holes to prevent coagulation from occurring before the fluid is dispensed through the respective ejection hole, thereby preventing the formation of a clog and / or blockage in the ejection tip.

[0032] In one embodiment, the ejection tip for ejecting the tissue sealant preferably includes a partition wall positioned between the ejection holes. The partition wall preferably prevents the biologicals / reactants on the surface of the ejection tip from contacting and reacting with each other, which can otherwise clog the ejection tip. The partition wall is preferably an external partition wall that extends distally from the distal end of the ejection tip.

[0033] In one embodiment, the ejection holes preferably include a raised opening (e.g., a raised bump) that allows the biologicals / reactants on the surface of the ejection holes to flow away from the surface of the ejection holes to prevent the formation of any possible surface coagulum and / or clog on the ejection openings.

[0034] In one embodiment, the dispensing device for the ejection tip preferably includes a one-way valve / check valve associated with each lumen for each biological / reactant component. The one-way check valve preferably prevents backflow of the tissue sealant components. For example, during backflow, the biologicals / reactants present on the ejection tip can be sucked back into the ejection openings, which can cause the ejection openings to clog.

[0035] In one embodiment, the ejection tip preferably includes one or more hydrophobic surfaces, which minimizes the likelihood of the biologicals / reactants remaining on critical surfaces (e.g., the ejection holes), thereby reducing the occurrence of surface coagulum and / or ejection hole clogging.

[0036] In one embodiment, a jet tip for dispensing fluids that react together preferably includes a first lumen for a first fluid, a second lumen for a second fluid, and a dispensing tip cap at distal ends of the respective first and second lumens. In one embodiment, the dispensing tip cap advantageously includes a cylindrical body having an open proximal end for receiving distal ends of the first and second lumens and a distal end closed by a distal end wall.

[0037] In one embodiment, the dispensing tip cap can include a first jet aperture formed in the distal end wall in fluid communication with the first lumen, whereby the first jet aperture includes a first raised mound projecting distally from an outer surface of the distal end wall of the dispensing tip cap.

[0038] In one embodiment, the dispensing tip cap can include a second jet aperture formed in the distal end wall in fluid communication with the second lumen, whereby the second jet aperture includes a second raised mound projecting distally from an outer surface of the distal end wall of the dispensing tip cap.

[0039] In one embodiment, the dispensing tip cap preferably has an outer partition wall projecting distally from an outer surface of the distal end wall of the dispensing tip cap. In one embodiment, the outer partition wall preferably extends between the first jet aperture and the second jet aperture for forming a barrier between the first jet aperture and the second jet aperture at the outer surface of the distal end wall of the dispensing tip cap.

[0040] In one embodiment, the dispensing tip cap can include an inner partition wall inside the cylindrical body extending between the proximal end of the cylindrical body and an inner surface of the distal end wall for dividing an interior region of the dispensing tip cap into a first chamber in fluid communication with the distal end of the first lumen and a second chamber in fluid communication with the distal end of the second lumen.

[0041] In one embodiment, the jet tip can include a first fluid passageway formed in a first region of the inner surface of the distal end wall of the dispensing tip cap. In one embodiment, the first fluid passageway is in fluid communication with the distal end of the first lumen and the first jet opening.

[0042] In one embodiment, the jet tip can include a second fluid passageway formed in a second region of the inner surface of the distal end wall of the dispensing tip cap. In one embodiment, the second fluid passageway is in fluid communication with the distal end of the second lumen and the second jet opening.

[0043] In one embodiment, the first fluid pathway advantageously includes a first vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the first jetting opening, and a pair of first grooves formed in the inner surface of the distal end wall and extending radially outward from the first vortex chamber to the outer periphery of the inner surface of the distal end wall of the dispensing tip cap. In one embodiment, each of the first grooves has a width. In one embodiment, the width of the first grooves can narrow between their respective outer and inner ends.

[0044] In one embodiment, the second fluid pathway advantageously includes a second vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the second jetting opening, and a pair of second grooves formed in the inner surface of the distal end wall and extending radially outward from the second vortex chamber to the outer periphery of the inner surface of the distal end wall of the dispensing tip cap. In one embodiment, each of the second grooves has a width. In one embodiment, the width of the second grooves can narrow between their respective outer and inner ends.

[0045] In one embodiment, the outer partition wall has a proximal end portion secured to the distal face or outer surface of the distal end wall and a distal free end located distally of the respective apexes of the first and second raised bumps for defining the distal-most end of the dispensing tip cap.

[0046] In one embodiment, a jetting tip for dispensing fluids that react together preferably includes a first lumen for a first fluid, a second lumen for a second fluid, and a dispensing tip cap at distal ends of the first and second lumens.

[0047] In one embodiment, the dispensing tip cap preferably includes a cylindrical body having an open proximal end for coupling with the distal ends of the first and second lumens and a distal end closed by a distal end wall having an inner surface and an outer surface / distal face.

[0048] In one embodiment, the dispensing tip cap can include a first jetting aperture formed in the distal end wall in fluid communication with the distal end of the first lumen. In one embodiment, the first jetting aperture preferably includes a first raised bump projecting distally from the outer surface of the distal end wall of the dispensing tip cap.

[0049] In one embodiment, the dispensing tip cap can include a second jetting aperture formed in the distal end wall in fluid communication with the distal end of the second lumen. In one embodiment, the second jetting aperture preferably includes a second raised bump projecting distally from the outer surface of the distal end wall of the dispensing tip cap.

[0050] In one embodiment, the dispensing cap advantageously includes an outer partition wall projecting distally from an outer surface / distal face of the distal end wall of the dispensing cap. In one embodiment, the partition wall preferably extends across the outer surface / distal face of the distal end wall of the dispensing cap and between the first ejection aperture and the second ejection aperture for forming a barrier between the first ejection aperture and the second ejection aperture.

[0051] In one embodiment, the dispensing cap advantageously includes a cylindrical body having a cylindrical wall extending from a proximal end to a distal end of the cylindrical body. In one embodiment, the dispensing cap preferably includes an inner partition wall located inside the cylindrical body that divides the cylindrical body into two portions. In one embodiment, the inner partition wall preferably extends between the proximal end of the cylindrical body and the inner surface of the distal end wall for dividing the inner surface of the distal end wall into a first region in fluid communication with the distal end of the first lumen and a second region in fluid communication with the distal end of the second lumen.

[0052] In one embodiment, the dispensing cap preferably includes a first fluid passageway formed in the first region of the inner surface of the distal end wall of the dispensing cap. In one embodiment, the first fluid passageway is advantageously located between the distal end of the first lumen and the first ejection aperture.

[0053] In one embodiment, the dispensing cap preferably includes a second fluid passageway formed in the second region of the inner surface of the distal end wall of the dispensing cap. In one embodiment, the second fluid passageway is advantageously located between the distal end of the second lumen and the second ejection aperture.

[0054] In one embodiment, the first fluid passageway preferably includes a first vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the first ejection aperture and a pair of first grooves formed in the inner surface of the distal end wall and extending radially outward from the first vortex chamber.

[0055] In one embodiment, the second fluid passageway advantageously includes a second vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the second ejection aperture and a pair of second grooves formed in the inner surface of the distal end wall and extending radially outward from the first vortex chamber.

[0056] These and other preferred embodiments of the present application will be described in greater detail hereinbelow. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 is a perspective view of a dispensing device having a clog-resistant ejection tip for ejecting two fluids that react together in accordance with one embodiment of the present patent application.

[0058] Figure 2 is an exploded view of a clog-resistant spray tip for spraying two fluids that react together according to an embodiment of the present patent application, the clog-resistant spray tip including a gasket, a tip housing, an internal manifold, and a distribution tip cap, and a connector for securing the clog-resistant spray tip to a distal end of a shaft of a dispensing device.

[0059] Figure 3A is Figure 2 is a perspective view of the connector shown.

[0060] Figure 3B is Figure 3A is a cross-sectional view of the connector shown.

[0061] Figure 3C is Figure 3A is a distal end view of the connector shown.

[0062] Figure 3D is Figure 3A is a proximal end view of the connector shown.

[0063] Figure 4A is Figure 2 is a perspective view of the gasket shown.

[0064] Figure 4B is Figure 4A is a distal end view of the gasket shown.

[0065] Figure 4C is Figure 4A is a perspective view of the distal face of the gasket shown.

[0066] Figure 4D is Figure 4A is a proximal end view of the gasket shown.

[0067] Figure 5A is Figure 2 is a perspective view of the housing shown.

[0068] Figure 5B is Figure 5A is a cross-sectional view of the housing shown.

[0069] Figure 6A is Figure 2 is a perspective view of the internal manifold shown.

[0070] Figure 6B is Figure 6A is another perspective view of the internal manifold shown.

[0071] Figure 6C is Figure 6A and Figure 6B is a perspective view of a distal end of the internal manifold shown.

[0072] Figure 6D yes Figures 6A-6C Another perspective view of the distal end of the inner manifold is shown.

[0073] Figure 6E yes Figures 6A-6D A cross-sectional view of the inner manifold is shown.

[0074] Figure 6F It is along Figure 6E The line 6F-6F is intercepted Figures 6A-6E A cross-sectional view of the inner manifold is shown.

[0075] Figure 7A yes Figure 2 A perspective view of the distal end of the dispensing cap is shown.

[0076] Figure 7B yes Figure 7A A perspective view of the proximal end of the dispensing cap is shown.

[0077] Figure 7C yes Figure 7A and Figure 7B A cross-sectional view of the dispensing cap is shown.

[0078] Figure 8A yes Figures 7A-7C A proximal end view of a dispensing cap is shown including a first D-shaped chamber having a first fluid pathway and a second D-shaped chamber having a second fluid pathway.

[0079] Figure 8B-1 yes Figure 8A An enlarged view of the first fluid pathway is shown.

[0080] Figure 8B-2 is Figure 8A A perspective view of the first fluid pathway is shown.

[0081] Figure 8B-3 is Figure 8A A cross-sectional view of the first fluid passage is shown.

[0082] Figure 8B-4 is Figure 8A A perspective cross-sectional view of the first fluid pathway is shown.

[0083] 9 is a schematic diagram of a first fluid passageway of a dispensing cap of a dispensing device according to one embodiment of the present patent application.

[0084] Figure 10A According to one embodiment of the present patent application Figure 2 A perspective view of the method of assembling the gasket and top end housing together is shown.

[0085] Figure 10B According to one embodiment of the present patent application Figure 2Another perspective view of the method of assembling the gasket and tip housing together shown.

[0086] Figure 11A is a method of assembling the tip housing, inner manifold, and dispensing tip cap together according to one embodiment of the present patent application. Figure 2 is a perspective view of the method of assembling the tip housing, inner manifold, and dispensing tip cap together shown.

[0087] Figure 11B is a method of assembling the tip housing, inner manifold, and dispensing tip cap together according to one embodiment of the present patent application. Figure 2 is another perspective view of the method of assembling the tip housing, inner manifold, and dispensing tip cap together shown.

[0088] Figure 12A is a side view of an anti-clog spray tip for spraying two fluids that react together according to one embodiment of the present patent application, the anti-clog spray tip being secured to a connector.

[0089] Figure 12B is Figure 12A is a perspective view of a distal end of the anti-clog spray tip shown.

[0090] Figure 13 is Figure 12A and Figure 12B is a cross-sectional view of the anti-clog spray tip shown.

[0091] Figure 14 is an enlarged cross-sectional view of a mid-section of the anti-clog spray tip shown in Figure 13.

[0092] Figure 15 is a cross-sectional view of the anti-clog spray tip of Figure 14 taken along line 15-15 of Figure 14.

[0093] Figure 16 is a cross-sectional view of the anti-clog spray tip shown in Figure 14 taken along line 16-16 of Figure 14.

[0094] Figure 17 is a cross-sectional view of a distal end of the anti-clog spray tip shown in Figure 13.

[0095] Figure 18 is a top plan view of a dispensing device having an anti-clog spray tip for spraying two fluids that react together according to one embodiment of the present patent application.

[0096] Figure 19 is a top plan view of a dispensing device having an anti-clog spray tip for spraying two fluids that react together according to one embodiment of the present patent application. DETAILED DESCRIPTION

[0097] Referring to Figure 1In one embodiment, a dispensing device 100 for ejecting a fluid may include one or more features disclosed in one or more embodiments of US 2018 / 0177978 to Spivey et al., which is assigned to Ethicon LLC, the disclosure of which is incorporated herein by reference. In one embodiment, the dispensing device 100 preferably includes a device housing 102 that houses a manifold (not shown) and two Luer-type connectors 104, 106 extending proximally from the device housing. In one embodiment, the two Luer-type connectors 104, 106 are connectable to two syringes containing respective fluids that react with each other. The dispensing device 100 advantageously includes a bracket 108 configured to connect the device housing 102 to a structure that holds two syringes. The first syringe can hold a first fluid and the second syringe can hold a second fluid that reacts with the first fluid when ejected from the dispensing device 100.

[0098] In one embodiment, the dispensing device 100 preferably includes an elongated shaft 110 (e.g., an elongated flexible or rigid tube) having a proximal end connected to the device housing 102. The elongated shaft 110 preferably extends distally from the device housing. In one embodiment, the elongated shaft 110 accommodates two cannulas that are advantageously juxtaposed and used to deliver two fluids to a connector 116 secured to the distal end 112 of the elongated shaft 110. A first fluid may be delivered through the first cannula and a second fluid may be delivered through the second cannula. In one embodiment, the dispensing device 100 preferably includes a cannula that is coupled to the distal end of the device housing 102. Figure 2 ) is fixed to the anti-clogging spray tip 114 of the distal end 112 of the elongated shaft 110. After being sprayed from the anti-clogging spray tip 114, the two fluids preferably react with each other.

[0099] In one embodiment, the anti-clog spray tip 114 can be permanently secured to the distal end 112 of the elongated shaft 110. In one embodiment, the anti-clog spray tip 114 can be releasably secured to the distal end 112 of the elongated shaft 110 such that a first spray tip (e.g., a used spray tip) can be detached and replaced with a second spray tip (e.g., a new spray tip) that can be releasably secured to the distal end of the shaft.

[0100] See also Figure 2 In one embodiment, the anti-clogging spray tip 114 ( Figure 1 ) preferably includes a device assembled together for dispensing from the device 100 ( Figure 1various components of the distal end of the anti-clog spray tip 114 of the dispensing device 100. In one embodiment, the anti-clog spray tip 114 preferably includes a gasket 118, a tip housing 120, an inner manifold 122, and a dispensing tip cap 124. In one embodiment, the anti-clog spray tip 114 Figure 1 are assembled together, and the fully assembled anti-clog spray tip 114 is secured to the distal end 112 of the tubular shaft 110 of the dispensing device 100 via the connector 116 Figure 1 In one embodiment, the connector 116 is not part of the anti-clog spray tip 114, but is used to connect the spray tip to the distal end of the shaft of the dispensing device. In one embodiment, the anti-clog spray tip can include a connector for securing the spray tip to the distal end of the shaft of the dispensing device.

[0101] Referring to Figure 3A and Figure 3B In one embodiment, the connector 116 preferably includes a tubular body 126 secured to the distal end 112 of the elongated shaft 110 of the dispensing device 100 Figure 1 In one embodiment, the connector 166 preferably includes a proximal end 128, a distal end 130, an inlet opening 132 at the proximal end 128 adapted to receive the distal end 112 of the elongated shaft 110 of the dispensing device 100 Figure 1 and an end wall 136 defining an end of the connector flow chamber 134.

[0102] In one embodiment, the connector 116 preferably includes a first lumen 138 extending between the connector flow chamber 134 and the distal end 130 of the connector. The first lumen 138 is adapted to receive a first cannula for a first fluid. The connector 116 preferably includes a second lumen 140 extending between the connector flow chamber 134 and the distal end 130 of the connector. The second lumen 140 is adapted to receive a second cannula for a second fluid that reacts with the first fluid. In one embodiment, the first and second fluids are preferably separated from each other as they flow through the connector 116. The first and second lumens 138 and 140 are preferably side-by-side and are adapted to receive and seat respective first and second cannulas that extend through the tubular shaft 110 of the dispensing device 100 Figure 1

[0103] In one embodiment, the distal end 130 of the connector 116 preferably has external threads 142 that are adapted to be screwed into internal threads Figure 2 inside the tip housing 120 for assembling the proximal end of the tip housing with the connector 116, as will be described in greater detail herein.​

[0104] See also Figure 3B and Figure 3C In one embodiment, the distal end 130 of the connector 116 preferably includes a first D-shaped outlet port 144 aligned with the distal end of the first lumen 138 and a second D-shaped outlet port 146 aligned with the distal end of the second lumen 140. The connector 116 advantageously includes a connector divider wall 141 that separates and spaces the first D-shaped outlet port 138 and the second D-shaped outlet port 140 from each other. As will be described in more detail herein, the first D-shaped outlet port 144 and the second D-shaped outlet port 146 are adapted to receive a gasket 118 ( Figure 2 ) protrudes from the proximal side of the first D-shaped attachment plug and the second D-shaped attachment plug for assembling the gasket 118 with the distal end 130 of the connector 116. In one embodiment, the two fluids are preferably separated and separated from each other until they are ejected from the anti-clogging spray tip 114 ( Figure 1 ) of the distal end of the dispensing cap 124 ( Figure 2 ) is sprayed, whereupon the two fluids mix together to react with each other.

[0105] See also Figure 3D In one embodiment, the inlet opening 132 of the connector 116 provides access to the proximal end 128 of the connector flow chamber 134 ( Figure 3A ), the connector flow chamber is located at the proximal end of the tubular member 126 of the connector 116. The connector flow chamber 134 desirably terminates at a distal end wall 136. A first lumen 138 and a second lumen 140 are preferably formed in the distal end wall 136 and extend distally toward respective D-shaped outlet ports 144, 146 located at the distal end 130 of the connector 116. The first lumen 138 is adapted to receive a first cannula containing a first fluid of a multi-component material, and the second lumen 140 is adapted to receive a second cannula containing a second fluid of a multi-component material.

[0106] See also Figures 4A-4D In one embodiment, the gasket 118 preferably includes an annular plate 148 having a plurality of holes facing the anti-clogging spray tip 114 ( Figure 2 ) and a distal surface 152 extending toward the distal end of the anti-clogging spray tip. The gasket 118 advantageously includes a proximal surface 150 configured to be inserted into the distal end 130 ( Figure 3B ) in the first D-shaped outlet port 144 at the first D-shaped attachment plug 154. The gasket 118 advantageously includes a plug adapted to be inserted into the distal end 130 ( Figure 3B) in the second D-shaped exit port 146. The first and second D-shaped attachment plugs 154, 156 preferably have an outer dimension and configuration that closely matches the shape of the respective D-shaped exit ports 144, 146 at the distal end 130 of the connector 116 for forming a pressure fit between the grommet 118 and the distal end of the connector 116.

[0107] In one embodiment, the grommet 118 preferably includes a first lumen 138' extending through the first D-shaped plug 154 to the distal end face 152 of the annular plate 148. The grommet 118 advantageously includes a second lumen 140' extending through the second D-shaped plug 156 to the distal end face 152 of the annular plate 148.

[0108] In one embodiment, when the grommet 118 is assembled with the distal end 130 of the connector 116, Figure 3B ) the first D-shaped attachment plug 154 is preferably inserted into the first D-shaped exit port 144 of the connector and the second D-shaped attachment plug 156 is inserted into the second D-shaped exit port 146 of the connector. After the grommet 118 has been assembled with the distal end of the connector 116, the first lumen 138 extending through the connector is preferably aligned with the first lumen 138' of the grommet 118 and the second lumen 140 extending through the connector 116 is preferably aligned with the second lumen 140' of the grommet 118.

[0109] Referring to Figure 4B , in one embodiment, the grommet 118 advantageously includes a first pair of lateral struts 160A, 160B extending across the first lumen 138'. The lateral struts 160A, 160B are preferably positioned between the proximal end of the D-shaped attachment plug 154 and the distal face 152 of the annular plate 148. The grommet 118 advantageously includes a second pair of lateral struts 162A, 162B extending across the second lumen 140' of the grommet 118. The second pair of lateral struts 162A, 162B are preferably positioned between the proximal end of the second D-shaped attachment plug 156 and the distal face 152 of the annular plate 148. As will be described in greater detail herein, the lateral struts 160A-160B and 162A-162B preferably position the free end of the butterfly connector extending proximally from the proximal end of the inner manifold 122 Figure 6A ).

[0110] In one embodiment, the distal face 152 of the annular plate 148 of the grommet 118 includes a first butterfly opening 161 aligned with the first lumen 138'. The first butterfly opening 161 is configured to receive the free end of the butterfly connector extending proximally from the proximal end of the inner manifold 122 Figure 2) a first butterfly connector extending proximally. In one embodiment, the distal face 152 of the annular plate 148 of the grommet 118 includes a second butterfly opening 163 aligned with the second lumen 140'. The second butterfly opening 163 is configured to receive a second butterfly connector extending proximally from the inner manifold 122 Figure 2 ) a second butterfly connector extending proximally.

[0111] Referring to Figure 5A and Figure 5B In one embodiment, the tip housing 120 of the anti-clog spray tip Figure 2 preferably includes a tubular shaped body 164 having a proximal end 166 and a distal end 168. The tubular shaped body 164 of the tip housing 120 advantageously includes an elongated conduit 170 extending from a first opening 172 located at the proximal end 166 of the tubular member 164 and a second opening 174 located at the distal end 168 of the tubular member 164.

[0112] Referring to Figure 5B In one embodiment, the tubular member 164 has an inner surface 176 that surrounds the elongated conduit 170 and extends from the proximal end 166 to the distal end 168 of the tubular member 164. In one embodiment, the tip housing 120 preferably has an internal thread 178 formed in the inner surface 176 of the tubular member 164. In one embodiment, the internal thread 178 is preferably adjacent to the proximal end 166 of the tubular member 164. The internal thread 168 is adapted to receive an external thread 142 located at the distal end of the connector 116 Figure 3A for securing the distal end of the connector 116 with the proximal end of the tip housing 120 with the grommet 118 positioned between the distal end of the connector 116 and the tip housing 120. Figure 2

[0113] Referring to Figures 6A-6D In one embodiment, the inner manifold 122 Figure 2 preferably includes a tubular member 180 having a proximal end 182 and a distal end 184. The inner manifold 122 advantageously includes an annular sealing flange 186 secured to the proximal end 182 of the tubular member 180. In one embodiment, the annular sealing flange 186 advantageously includes a proximal face 188 that is adapted to abut the distal face 152 of the grommet 118 when the components of the anti-clog spray tip are assembled together Figure 4A ​). In one embodiment, the inner manifold 122 advantageously includes a first butterfly connector 190 projecting proximally from the proximal face 188 of the annular sealing flange 186. The inner manifold 122 advantageously includes a second butterfly connector 192 also projecting proximally from the proximal face 188 of the annular sealing flange 186 of the inner manifold 122. In one embodiment, the first butterfly connector 190 and the second butterfly connector 192 are adapted to be inserted into respective butterfly openings 161, 163 formed in the distal face 152 of the annular plate 148 of the grommet 118. Figure 4B

[0114] In one embodiment, the first butterfly connector 190 advantageously includes a first lumen 138" adapted to align with the first lumen 138' of the grommet 118 (see FIG. 6) and the first lumen 138 of the connector 116 (see FIG. 5). In one embodiment, the second butterfly connector 192 advantageously includes a second lumen 140" adapted to align with the second lumen 140' of the grommet 118 (see FIG. 6) and the second lumen 140 of the connector (see FIG. 5). When the connector, grommet, tip housing, and inner manifold are assembled together, a first cannula for a first fluid preferably passes through the first lumen 138 of the connector 116 (see FIG. 5), the first lumen 138' of the grommet 118 (see FIG. 6), and the first lumen 138" of the first butterfly connector 190 (see FIG. 7), and a second cannula for a second fluid preferably passes through the second lumen 140 of the connector 116 (see FIG. 5), the second lumen 140 of the grommet 118 (see FIG. 6), and the second lumen 140" of the second butterfly connector 192 (see FIG. 7). Figure 4B Figure 3B Figure 4B Figure 3B Figure 3B Figure 4B Figure 6B Figure 3B Figure 4B Figure 6B

[0115] In one embodiment, the distal end 184 of the tubular member 180 of the inner manifold 122 diverges into a first terminal chamber 194 for a first fluid of a multi-component material and a second terminal chamber 196 for a second fluid of the multi-component material. The distal end 184 of the tubular member 180 preferably includes a space 198 extending between the first terminal chamber 194 and the second terminal chamber 196 for spacing the first terminal chamber and the second terminal chamber from one another. In one embodiment, the first fluid of the multi-component material flows through the first lumen 138" for being directed into the first terminal chamber 194, and the second fluid of the multi-component material flows through the second lumen 140" for being directed into the second terminal chamber 196. In one embodiment, the first terminal chamber 194 and the second terminal chamber 196 hold the first fluid and the second fluid away from one another.

[0116] ​​​​​​​​​​​In one embodiment, the first terminal chamber 194 advantageously has an outer wall with radial openings 200A, 200B formed therein to enable the first fluid of the multi-component material to exit the first terminal chamber radially. In one embodiment, the second terminal chamber 196 advantageously has an outer wall with radial openings 202A, 202B formed therein to enable the second fluid of the multi-component material to exit the second terminal chamber radially.

[0117] Referring to Figure 6E In one embodiment, the inner manifold 122 preferably includes a first lumen 138" extending through the first union 190 and the annular seal 186 to an end wall at a distal end of the first terminal chamber 194. In one embodiment, the inner manifold 122 preferably includes first radial openings 200A, 200B formed in an outer wall of the first terminal chamber 194 Figure 6C for enabling the first fluid of the multi-component material flowing through the first lumen 138" to exit the distal end of the first terminal chamber 194 radially.

[0118] The inner manifold 122 preferably includes a second lumen 140" extending through the second union 192 and the annular seal 186 to an end wall at a distal end of the second terminal chamber 196. In one embodiment, the inner manifold 122 preferably includes second radial openings 202A, 202B formed in an outer wall of the second terminal chamber 196 Figure 6C for enabling the second fluid of the multi-component material flowing through the second lumen 140" to exit the distal end of the second terminal chamber 196 radially.

[0119] Referring to Figure 6F In one embodiment, the first lumen 138" terminates at the end wall of the first terminal chamber 194. The first terminal chamber 194 preferably includes first radial openings 200A, 200B formed in an outer wall of the first terminal chamber 194. The inner manifold 122 preferably includes first radially extending grooves 204, 206 extending outwardly from the first lumen 138" to the respective first radial openings 200A, 200B. In one embodiment, when the first fluid of the multi-component material reaches the distal end of the first lumen 138", the first fluid is directed radially outwardly through the first radially extending grooves 204, 206, whereupon the first fluid exits the distal end of the first terminal chamber 194 via the first radial openings 200A, 200B.

[0120] In one embodiment, the second lumen 140" terminates at an end wall of a second terminal chamber 199. The second terminal chamber 196 preferably includes second radial openings 202A, 202B formed on an outer wall of the second terminal chamber 196. The inner manifold 122 preferably includes second radially extending grooves 208, 210 extending outwardly from the second lumen 140" to the respective second radial openings 202A, 202B. In one embodiment, when the second fluid of the multi-component material reaches the distal end of the second lumen 140", the second fluid is directed radially outwardly through the second radially extending grooves 208, 210, whereupon the second fluid exits the distal end of the second terminal chamber 196 via the second radial openings 202A, 202B.

[0121] In one embodiment, the first terminal chamber 194 and the second terminal chamber 196 are spaced apart from one another via a space 198 extending therebetween. In one embodiment, the opposing walls of the first terminal chamber and the second terminal chamber define the space 198. As will be described in greater detail herein, the space 198 extending between the first terminal chamber 194 and the second terminal chamber 196 can receive a securing flange (FIG. 6) Figure 2 ) disposed on a proximal face of the dispensing tip 124 for securing the dispensing tip to the distal end of the inner manifold 122.

[0122] Referring to Figure 7A In one embodiment, the dispensing tip 124 of the anti-clog jetting tip preferably includes a tubular-shaped body 212 having a proximal end 214 and a distal end 216. The distal end 216 of the dispensing tip 124 preferably has a distal end wall 218 with an outer surface 219. In one embodiment, the dispensing tip 124 preferably includes a first raised aperture 220 having a first raised mound 222 and a first jetting opening 224 formed in the first raised mound 222. In one embodiment, the dispensing tip 124 preferably includes a second raised aperture 226 having a second raised mound 228 and a second jetting opening 230 formed in the second raised mound 228. In one embodiment, the first raised aperture 220 and the second raised aperture 226 preferably project distally from the outer surface 219 of the distal end wall 218.

[0123] In one embodiment, the first fluid of the multi-component material is expelled through the first radial openings 200A, 200B Figure 6F ) of the first terminal chamber 194, whereupon the first fluid is further directed through the first raised aperture 220 of the dispensing tip 124. In one embodiment, the second fluid of the multi-component material exiting the radial openings 202A, 202B Figure 6F ) of the second terminal chamber 96 is further directed through the second raised aperture 226 of the dispensing tip 124.

[0124] In one embodiment, the dispensing top cap 124 advantageously includes an outer partition wall 232 projecting distally from the outer surface 219 of the distal end wall 218 of the dispensing top cap. In one embodiment, the outer partition wall 232 has a height H1 that projects beyond the outer surface 219 of the distal end wall 218 of the dispensing top cap 124. In one embodiment, the outer partition wall 232 serves as a barrier between the first and second raised apertures 220, 226 to prevent the first and second fluids ejected from the respective first and second raised apertures from coming into contact with each other and reacting together on the outer surface 219 of the distal end wall 218 of the end cap. Thus, the outer partition wall 232 serves to minimize clogging of one or more of the first and second ejection openings 224, 230 of the respective first and second raised apertures 220, 226.

[0125] Referring to Figure 7B In one embodiment, the proximal end 214 of the tubular body 212 of the dispensing top cap 124 preferably includes a first D-shaped chamber 234 configured to receive the first terminal chamber 194 located at the distal end 184 of the inner manifold 122 Figure 6D In one embodiment, the dispensing top cap 124 advantageously includes a second D-shaped chamber 236 configured to receive the second terminal chamber 196 located at the distal end 184 of the inner manifold 122. The dispensing top cap 124 advantageously includes an inner partition wall 238 separating the first D-shaped chamber 234 of the inner manifold 122 from the second D-shaped chamber 236 of the inner manifold 122. In one embodiment, when the dispensing top cap 124 is assembled with the distal end of the inner manifold 122, the inner partition wall 238 accessible at the proximal end 214 of the tubular member 212 is preferably inserted in the space 198 extending between the first and second terminal chambers 194, 196 of the inner manifold 122 Figure 6B ) for securing the dispensing top cap 124 to the distal end of the inner manifold 122 Figure 2

[0126] Referring to Figure 7C ​In one embodiment, the dispensing cap 124 preferably includes a tubular body 212 having a proximal end 214 and a distal end 216. The dispensing cap 124 preferably includes a first raised bore 220 having a first raised hill 222 and a first jet opening 224 formed in the first raised hill 222, which is in fluid communication with a first D-shaped chamber 234 of the dispensing cap. The dispensing cap 124 advantageously includes a second raised bore 226 having a second raised hill 228 and a second jet opening 230 formed in the second raised hill 228, which is in fluid communication with a second D-shaped chamber 236 of the dispensing cap. An inner partition wall 238 separates the first D-shaped chamber 234 from the second D-shaped chamber 236 for ensuring that the first fluid and the second fluid of the multi-component material remain separate from one another until they are discharged through the first jet opening 224 and the second jet opening 230 of the respective first raised bore 220 and second raised bore 226.

[0127] An outer partition wall 232 of the dispensing cap 124 preferably projects distally from an outer surface 219 of the distal end wall 218 of the dispensing cap 124. The outer partition wall 232 separates the first raised bore 220 and the second raised bore 226 from one another. The outer partition wall 232 preferably defines a height H1 that extends above and / or projects beyond the outer surface 219 of the distal end wall 218 of the dispensing cap 124.

[0128] In one embodiment, the first D-shaped chamber 234 includes a first inner surface 239 of the distal end wall 218 having a first fluid passageway 240 formed therein that is in fluid communication with the first jet opening 224 of the first raised bore 220. In one embodiment, the first fluid of the multi-component material directed into the first D-shaped chamber 234 advances into the first fluid passageway 240 for rapid rotation within a first vortex chamber 248 prior to dispensing from the first jet opening 224 of the first raised bore 220 of the dispensing cap 124.

[0129] In one embodiment, the second D-shaped chamber 236 includes a second inner surface 241 of the distal end wall having a second fluid passageway 242 formed therein that is in fluid communication with the second jet opening 230 of the second raised bore 226. In one embodiment, the second fluid of the multi-component material directed into the second D-shaped chamber 236 advances into the second fluid passageway 242 for rapid rotation within a second vortex chamber 256 prior to dispensing from the second jet opening 230 of the second raised bore 226 of the dispensing cap 124.

[0130] Referring to Figure 8AIn one embodiment, the dispensing cap 124 preferably includes an inner dividing wall 238 that separates the first D-shaped chamber 234 and the second D-shaped chamber 236 from each other. The first D-shaped chamber 234 preferably includes an outer peripheral wall 244 having an inner surface 246 that is spaced apart from the inner dividing wall 238. The first fluid passage 240 preferably includes a first vortex chamber 248 surrounding the first injection opening 224 and a pair of first grooves 250A, 250B extending inwardly from the inner surface 246 of the peripheral wall 244 toward the first vortex chamber 248. In one embodiment, the first grooves 250A, 250B may have respective widths that narrow between the inner surface 246 and the first vortex chamber 248, thereby increasing the velocity of the first fluid as it flows through the first grooves 250A, 250B toward the first vortex chamber 248. In one embodiment, the configuration of the first grooves 250A, 250B relative to the first vortex chamber 248 preferably rotates the first fluid in a counterclockwise direction, designated as R1, as the first fluid enters the first vortex chamber 248. In one embodiment, the first fluid rotates in the counterclockwise direction R1 before being dispensed / sprayed through the first spray opening 224.

[0131] In one embodiment, the second D-shaped chamber 236 preferably includes an outer peripheral wall 252 having an inner surface 254 that is spaced apart from the inner dividing wall 238. The second fluid passage 242 preferably includes a second vortex chamber 256 surrounding the second injection opening 224 and a pair of second grooves 258A, 258B extending inwardly from the inner surface 254 of the peripheral wall 252 toward the second vortex chamber 256. In one embodiment, the second grooves 258A, 258B can have respective widths that narrow between the inner surface 254 of the peripheral wall 252 and the second vortex chamber 256 to increase the velocity of the second fluid as it flows through the second grooves 258A, 258B toward the second vortex chamber 252. In one embodiment, the configuration of the second grooves 258A, 258B relative to the second vortex chamber 256 preferably rotates the second fluid in a clockwise direction, designated R2, upon entry into the second vortex chamber 252. In one embodiment, the second fluid rotates in a clockwise direction R2 before being dispensed / sprayed through the second spray opening 230 .

[0132] In one embodiment, when the first fluid of the multi-component material enters the first D-shaped chamber 234 of the dispensing tip 124, the first fluid preferably flows into the outer ends of the first channels 250A, 250B, whereupon the first channels direct the first fluid into the outer periphery of the first vortex chamber 248 for rotating the first fluid in a counterclockwise direction Rl when the first fluid is ejected from the first ejection opening 224. Similarly, when the second fluid of the multi-component material enters the second D-shaped chamber 236 of the dispensing tip 124, the second fluid preferably flows into the outer ends of the second channels 258A, 258B, whereupon the second channels direct the second fluid into the outer periphery of the second vortex chamber 256 for rotating the second fluid in a clockwise direction R2 when the second fluid is ejected from the second ejection opening 230.

[0133] Referring to Figure 8B-1 and FIG. 8B-2, in one embodiment, the first ejection opening 224 of the first fluid passageway 240 preferably defines a first diameter Dl and the first vortex chamber 248 preferably defines a second diameter D2 that is greater than the first diameter Dl of the first ejection opening 224. In one embodiment, the first ejection opening 224 can be located at the center of the first vortex chamber 248. In one embodiment, a first one of the first channels 250A advantageously has an outer end 260A located adjacent the inner surface 246 of the outer peripheral wall 244 and an inner end 260B located adjacent the outer periphery of the first vortex chamber 248. In one embodiment, the first one of the first channels 250A preferably has a width Wl that narrows between its outer end 260A and inner end 260B. In one embodiment, the narrowing of the first one of the first channels 250A preferably increases the velocity of the first fluid as it flows from the outer end 260A toward the inner end 260B of the first one of the first channels 250A.

[0134] In one embodiment, a second one of the first channels 250B advantageously has an outer end 262A located adjacent the inner surface 246 of the outer peripheral wall 244 and an inner end 262B located adjacent the outer periphery of the first vortex chamber 248. In one embodiment, the first one of the first channels 250B preferably has a width W2 that narrows between its outer end 262A and inner end 262B. In one embodiment, the narrowing of the second one of the first channels 250B preferably increases the velocity of the second fluid as it flows from the outer end 262A toward the inner end 262B of the second one of the first channels 250B.

[0135] Referring to FIGS. 8B-2 through 8B-4, in one embodiment, the first fluid pathway 240 is formed in the inner surface 239 of the distal end wall 218 of the first D-shaped chamber 234 of the dispensing top cover 124. In one embodiment, the first fluid pathway 240, including the first vortex chamber 248 and the first grooves 250A, 250B Figure 8B-1 ) defines a height H1 of about 0.005 inches to 0.010 inches.

[0136] In one embodiment, the first jetting opening 224 preferably has a diameter D1 that is less than the diameter D2 of the first vortex chamber 248. In one embodiment, the first jetting opening preferably has a length L1 of about __.

[0137] Referring to FIG. 9, in one embodiment, the dimensions of the first fluid pathway 240 can be modified to control the speed and / or rotational rate of the first fluid flowing through the first fluid pathway 240. Accordingly, one or more of the width and height of the first grooves 250A, 250B can be modified to control the speed of the first fluid flowing through the first grooves. Further, the degree of narrowing of the first grooves 250A, 250B between the respective outer and inner ends can be modified to control the speed of the first fluid flowing through the first grooves. Further, the diameter D1, height H1, and / or bevel of the first vortex chamber 248 can be modified to control the speed and / or rotational rate of the first fluid directed into the first jetting opening 224. In one embodiment, the diameter D1 and length L1 of the first jetting opening 224 can be modified to control the speed and / or dispensing angle of the first fluid as it is dispensed from the first jetting opening.

[0138] Referring to Figure 10A and Figure 10B , in one embodiment, the anti-clogging jetting tip 114 can be assembled together by over-molding the gasket 118 on the proximal end of the inner manifold 122. In one embodiment, after the gasket 118 is assembled to the proximal end of the inner manifold 122, the distal end of the gasket 118 / inner manifold 122 subassembly can be inserted into the first opening 172 at the proximal end 166 of the tip housing 120 for assembly of the gasket 116 / inner manifold 122 / tip housing 120 subassembly.

[0139] In one embodiment, the external threads 142 at the distal end 130 of the connector 116 are preferably threaded into the internal threads 178 located inside the proximal end of the tip housing 120 for securing the connector 116 together with the tip housing 120.

[0140] In one embodiment, to assemble the anti-clog spray tip 114 to the connector 116, the first and second D-shaped attachment plugs 154, 156 of the gasket 118 are advantageously inserted into the corresponding D-shaped outlet chambers 144, 146 at the distal end 130 of the connector 114. In one embodiment, the outer surfaces of the D-shaped attachment plugs 154, 156 preferably form a friction fit with the inner surfaces of the corresponding D-shaped outlet chambers 144, 146.

[0141] See also Figure 11A and Figure 11B In one embodiment, the inner manifold 122 is assembled with the tip housing 120 by inserting the first and second butterfly connectors 190, 192 and the annular sealing flange 186 at the proximal end 182 of the inner manifold 122 into the second opening 174 at the distal end 168 of the tip housing 120. In one embodiment, the inner manifold 122 is advanced in a proximal direction designated as DIR1 until the first and second butterfly connectors 190, 192 are inserted into corresponding butterfly openings 161, 163 formed in the distal end face 152 of the gasket 118 ( Figure 4B In one embodiment, the outer surfaces of the first butterfly connector 190 and the second butterfly connector 192 are preferably aligned with the corresponding butterfly openings 161, 163 ( Figure 4B ) forms a friction fit for aligning the proximal end of the inner manifold 122 with the connector 116 / gasket 118 / top housing 120 subassembly ( Figure 10B ) are fixed together.

[0142] In one embodiment, the distribution cap 124 is preferably assembled with the distal end 184 of the inner manifold 122 by juxtaposing and / or aligning the inner dividing wall 238 of the distribution cap 124 with the space 198 extending between the opposing inner walls of the first and second terminal chambers 194 , 196 of the inner manifold 122 .

[0143] In one embodiment, to assemble the distribution cap 124 with the inner manifold 122, the first and second D-shaped chambers 234, 236 accessible at the proximal end of the distribution cap 124 are juxtaposed with the respective first and second terminal chambers 194, 196 located at the distal end 184 of the inner manifold 122. In one embodiment, the distribution cap 124 is advanced in the proximal direction DIR1 such that the interior dividing wall 238 of the distribution cap 124 advances into the space 198 between the first and second terminal chambers 194, 196 of the inner manifold 122. The distribution cap 124 is preferably advanced proximally until the end walls 239, 241 ( Figure 8A ) adjacent to the distal side 205 of the inner manifold 122 ( Figure 11B).

[0144] In one embodiment, when the dispensing tip 124 is secured to the first terminal chamber 194 and the second terminal chamber 196, the first radial openings 200A, 200B of the first terminal chamber 194 are preferably aligned with the outer ends of the first grooves 250A, 250B of the dispensing tip 124, and the second radial openings 202A, 202B of the second terminal chamber 196 are preferably aligned with the outer ends of the second grooves 256A, 256B of the dispensing tip 124. In one embodiment, the first fluid of the multi-component material exits the first terminal chamber via the first radial openings 200A, 200B, whereupon the first fluid is directed to the outer ends of the first grooves 250A, 250B. In one embodiment, the second fluid of the multi-component material exits the second terminal chamber via the second radial openings 202A, 202B, whereupon the second fluid is directed to the outer ends of the second grooves 254A, 254B. Figure 6F Figure 6F Figure 8A Figure 6F Figure 8A Figure 6F Figure 8A Figure 6F Figure 8A

[0145] Referring to Figures 12A-12B In one embodiment, the fully assembled anti-clog spray tip 114 preferably includes a connector 116 having a distal end with external threads that engage with internal threads located at the proximal end of the tip housing 120. A gasket 118 is preferably disposed between the distal end of the connector 116 and the tip housing 120. In one embodiment, the proximal end 166 of the tip housing 120 preferably encircles the gasket. The anti-clog spray tip 114 advantageously includes a dispensing tip 124 accessible at the distal-most end of the anti-clog spray tip 114. An inner manifold 122 is preferably disposed within the tip housing 120 and extends between the distal end of the connector 116 and the dispensing tip 124. The outer partition wall 232 of the dispensing tip 124 projecting distally from the distal end face 218 of the dispensing tip 124 provides a barrier separating the first raised mound 220 from the second raised mound 226, such that the first fluid and the second fluid sprayed from the respective first and second raised mounds do not mix with each other on the distal end face 218, which minimizes the likelihood of the first and second raised mounds clogging during a spraying operation. Figure 2 Figure 2

[0146] ​​​​​​​​​​​13 and 14, in one embodiment, the anti-clogging spray tip 114 preferably includes a distal end 130 of a connector 116 that is inserted into an opening at the proximal end 166 of the tip housing 120. The external threads 142 ( Figure 3A ) is advantageously screwed into the internal threads 178 located on the interior 166 of the proximal end of the top housing 120 for securing the connector 116 and the top housing 120 to each other. The gasket 118 is advantageously juxtaposed between the distal end 130 of the connector 116 and the annular sealing flange 186 of the inner manifold 122. The D-shaped attachment plugs 154, 156 of the gasket 118, which preferably protrude proximally from the proximal end face of the annular plate 148 of the gasket 118, are inserted into the corresponding D-shaped outlet chambers 144, 146 ( Figure 3C ) for securing the gasket 118 to the distal end of the connector. In one embodiment, the annular plate 148 of the gasket 118 is preferably juxtaposed between the distal end 130 of the connector 116 and the annular sealing flange 186 located at the proximal end 182 of the inner manifold 122. The first butterfly connector 190 and the second butterfly connector 192 protruding proximally from the proximal end of the inner manifold 122 are preferably inserted into the distal end surface 152 ( Figure 4B ) in a butterfly-shaped opening in the manifold for assembling the proximal end of the inner manifold 122 with the gasket 118.

[0147] 15, in one embodiment, in order to place the gasket 118 ( Figure 2 ) is fixed together with the connector 116, and the washer 118 ( Figure 11A ) are preferably inserted into the corresponding D-shaped outlet chambers 144, 146 ( Figure 11B ), the outer surfaces of the D-shaped attachment plugs 154, 156 of the gasket 118 preferably form a friction fit with the inner surfaces of the corresponding D-shaped outlet chambers 144, 146 of the connector 116. Figure 2 ) preferably includes a first lumen 138" of a first cannula adapted to receive a first fluid containing a multi-component material. The inner manifold 122 ( Figure 2 ) preferably includes a second lumen 140" adapted to receive a second cannula containing a second fluid of the multi-component material.

[0148] 16, in one embodiment, in order to align the proximal end of the inner manifold 122 with the gasket 118 ( Figure 2) are fixed together, the outer surfaces of the first butterfly connector 190 and the second butterfly connector 192 of the inner manifold are preferably inserted into the butterfly openings 161, 163 ( Figure 4B ), so that the outer surfaces of the first butterfly connector 190 and the second butterfly connector 192 form a friction fit with the corresponding butterfly openings of the gasket 118. The first butterfly connector 190 preferably includes a first tubular cavity 138" adapted to receive a first cannula containing a first fluid of a multi-component material. The second butterfly connector 192 preferably includes a second tubular cavity 140" adapted to receive a second cannula containing a second fluid of a multi-component material.

[0149] 13 and 17, in one embodiment, the internal dividing wall 238 of the distribution cap 124 is preferably inserted into the space 198 that separates the first terminal chamber 194 and the second terminal chamber 196 of the inner manifold 122 from each other. In one embodiment, the internal dividing wall 238 preferably forms a friction fit with the distal end 184 of the inner manifold 122 for securing the distribution cap 124 and the inner manifold 122 together. In one embodiment, the corresponding first D-shaped chamber 234 and the second D-shaped chamber 236 ( Figure 7C ) of the inner surface 239, 241 of the distal end wall 218 ( Figure 7C ) preferably engages the distal end wall 205 of the inner manifold 122 ( Figure 11B The tubular member 212 of the distribution cap 124 preferably surrounds the outer surfaces of the respective first and second terminal chambers 194, 196 of the inner manifold 122. The outer dividing wall 232 of the distribution cap 124 preferably protrudes distally from the distal surface 219 of the distal end wall 218 of the distribution cap 124, serving as a barrier separating the respective first and second raised holes 220, 226 from each other.

[0150] 17, in one embodiment, the first terminal chamber 194 of the inner manifold 122 preferably includes first radial openings 200A, 200B ( Figure 6F ), which directs the first fluid of the multi-component material out of the first terminal chamber 194 and into the first fluid passage 240 ( Figure 8A ), so that the first fluid swirls in the first fluid passage before being ejected from the first ejection opening 224 of the first raised hole 220 of the distribution cap 124. The second terminal chamber 196 of the inner manifold 122 preferably includes second radial openings 202A, 202B ( Figure 6F ), which directs the second fluid of the multi-component material out of the second terminal chamber 196 and into the second fluid passage 242 ( Figure 8A), the second fluid swirls within the second fluid passageway before being ejected from the second ejection opening 230 of the second protruding bore 226 of the dispensing top cap 124.

[0151] The outer partition wall 232 of the dispensing top cap 124 projects distally from the distal surface 219 of the distal end wall 218 of the dispensing top cap 124 to ensure that the first fluid and the second fluid of the multi-component material do not mix on the distal surface 219 of the distal end wall 218, which can otherwise cause the first ejection opening 224 of the first protruding bore 220 and / or the second ejection opening 230 of the second protruding bore 226 to become clogged.

[0152] Referring to FIG. 18, in one embodiment, the dispensing device 300 preferably includes a manifold 315 that directs the first fluid and the second fluid of the multi-component material through a first cannula 317 and a second cannula 319, respectively, toward an anti-clog ejection tip 324 configured as disclosed herein. The anti-clog ejection tip 324 has a distally extending outer partition wall 332 that preferably separates and isolates the first protruding mound 320 and the second protruding mound 326 from one another. The first fluid and the second fluid can be ejected from the respective first protruding bore 320 and the second protruding bore 326, whereupon the first fluid and the second fluid mix together to react with one another.

[0153] Referring to FIG. 19, in one embodiment, the dispensing device 400 can be similar to that shown and described herein and preferably includes a first one-way check valve 425 and a second one-way check valve 435 associated with each of the first fluid and the second fluid of the multi-component material to prevent backflow of the first fluid and the second fluid, which can otherwise cause the anti-clog ejection tip 424 to become clogged.

[0154] In one embodiment, the ejection tips disclosed herein preferably include a first fluid passageway and a second fluid passageway adapted to receive components (e.g., the first fluid and the second fluid) of a tissue sealant and / or other bioadhesive material. In one embodiment, the tissue sealant and / or other bioadhesive material is preferably used to close an incision at a surgical site. In one embodiment, the tissue sealant can include fibrin, which is composed of thrombin and fibrinogen materials, although other tissue sealant and tissue adhesive formulations are available.

[0155] While the foregoing is directed to embodiments of the present application, other and further embodiments of the application can be devised without departing from the basic scope thereof, which is determined solely by the claims that follow. For example, the present application contemplates that any of the features shown in or incorporated by reference in any of the embodiments described herein can be combined with any of the features shown in or incorporated by reference in any of the other embodiments described herein and still fall within the scope of the present application.

Claims

1. A spray tip for dispensing fluids that react together, comprising: First lumen; Second lumen; A dispensing cap located at the distal ends of the respective first and second lumens and defining the distal end of the spray tip, the dispensing cap comprising a distal end wall defining a closed end of the dispensing cap; a first spray hole formed in the distal end wall and in fluid communication with the first lumen, wherein the first spray hole comprises a first protrusion protruding distally from an outer surface of the distal end wall of the dispensing cap, a second spray hole formed in the distal end wall and in fluid communication with the second lumen, wherein the second spray hole comprises a second protrusion protruding distally from the outer surface of the distal end wall of the dispensing cap, An external partition wall protrudes distally from the distal end wall of the dispensing cap and extends between the first spray hole and the second spray hole to form a barrier between the first spray hole and the second spray hole.

2. The spray tip according to claim 1, wherein The outer dividing wall has a proximal end portion fixed to the outer surface of the distal end wall and a distal free end located distal to respective apexes of the first and second raised hillocks for defining a distal-most end of the dispensing cap.

3. The spray tip according to claim 2, wherein The first convex mound and the second convex mound of the respective first and second injection holes include a hydrophobic surface adapted to repel fluid.

4. The spray tip according to claim 1, wherein The dispensing cover further comprises: a cylindrical body having an open proximal end for coupling with the distal ends of the first and second lumens and a distal end closed by the distal end wall; An internal dividing wall is located inside the cylindrical body and extends between the proximal end and the distal end wall of the cylindrical body, for dividing the interior area of ​​the dispensing cap into a first chamber in fluid communication with the first lumen and a second chamber in fluid communication with the second lumen.

5. The spray tip according to claim 4, wherein The distal end wall of the dispensing cap has an inner surface, and wherein the inner partition wall has a distal end portion fixed to the inner surface of the distal end wall for dividing the inner surface of the distal end wall of the dispensing cap into a first area disposed within the first chamber and a second area disposed within the second chamber.

6. The spray tip of claim 5, further comprising: a first fluid passage formed in the first region of the inner surface of the distal end wall of the dispensing cap, wherein the first fluid passage is in fluid communication with the first spray hole; A second fluid passage is formed in the second region of the inner surface of the distal end wall of the dispensing cap, wherein the second fluid passage is in fluid communication with the second spray hole.

7. The spray tip according to claim 6, wherein The first fluid path comprises: a first vortex chamber in fluid communication with the first injection hole; A pair of first grooves extends radially outward from the first vortex chamber.

8. The spray tip according to claim 7, wherein The second fluid path comprises: a second vortex chamber, the second vortex chamber being in fluid communication with the second injection hole; A pair of second grooves extends radially outward from the second vortex chamber.

9. The spray tip of claim 8, further comprising: the first lumen containing a first fluid that is directed into the first fluid passageway of the dispensing cap, wherein the first swirl chamber is configured to spin the first fluid prior to dispensing the first fluid from the first spray orifice; The second lumen contains a second fluid that is directed into the second fluid passageway of the dispensing cap, wherein the second vortex chamber is configured to rotate the second fluid prior to dispensing the second fluid from the second spray orifice, wherein the first and second fluids chemically react together after being dispensed from the respective first and second spray orifices.

10. The spray tip of claim 9, further comprising: a first syringe containing a first fluid; a second syringe containing a second fluid; a first one-way check valve located downstream of the first syringe and in fluid communication with the first lumen; A second one-way check valve is located downstream of the second syringe and is in fluid communication with the second lumen.

11. The spray tip of claim 8, wherein The first grooves extend away from each other on opposite sides of the first vortex chamber, and wherein the second grooves extend away from each other on opposite sides of the second vortex chamber.

12. A spray tip for dispensing fluids that react together, comprising: First lumen; Second lumen; A distribution cap is located at the distal ends of the first and second lumens, the distribution cap comprising a cylindrical body having an open proximal end for receiving the distal ends of the first and second lumens and a distal end closed by a distal end wall, a first spray hole formed in the distal end wall and in fluid communication with the first lumen, wherein the first spray hole comprises a first protrusion protruding distally from an outer surface of the distal end wall of the dispensing cap, a second spray hole formed in the distal end wall and in fluid communication with the second lumen, wherein the second spray hole comprises a second raised hillock protruding distally from the outer surface of the distal end wall of the dispensing cap, and an external partition wall protruding distally from the outer surface of the distal end wall of the dispensing cap, wherein the external partition wall extends between the first spray hole and the second spray hole and is used to form a barrier between the first spray hole and the second spray hole at the outer surface of the distal end wall of the dispensing cap.

13. The spray tip of claim 12, wherein: The dispensing cover further comprises: an internal dividing wall located within the cylindrical body and extending between the proximal end of the cylindrical body and the inner surface of the distal end wall, for dividing the interior area of ​​the dispensing cap into a first chamber in fluid communication with the distal end of the first lumen and a second chamber in fluid communication with the distal end of the second lumen.

14. The spray tip of claim 13, further comprising: a first fluid passage formed in a first region of the inner surface of the distal end wall of the dispensing cap, wherein the first fluid passage is in fluid communication with the distal end of the first lumen and the first spray orifice; A second fluid passage is formed in a second region of the inner surface of the distal end wall of the dispensing cap, wherein the second fluid passage is in fluid communication with the distal end of the second lumen and the second spray hole.

15. The spray tip of claim 14, wherein The first fluid path comprises: a first vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the first injection orifice; A pair of first grooves are formed in the inner surface of the distal end wall and extend radially outward from the first vortex chamber to an outer periphery of the inner surface of the distal end wall of the dispensing cap, wherein each of the first grooves has a width.

16. The spray tip of claim 15, wherein The second fluid path comprises: a second vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the second injection hole; A pair of second grooves are formed in the inner surface of the distal end wall and extend radially outward from the second vortex chamber to an outer periphery of the inner surface of the distal end wall of the dispensing cap, wherein each of the second grooves has a width.

17. The spray tip of claim 12, wherein: The outer dividing wall has a proximal end portion fixed to the outer surface of the distal end wall and a distal free end located distal to respective apexes of the first and second raised hillocks for defining a distal-most end of the dispensing cap.

18. A spray tip for dispensing fluids that react together, comprising: First lumen; Second lumen; A distribution cap is located at the distal end of the first lumen and the second lumen, the distribution cap comprising a cylindrical body having an open proximal end for coupling with the distal ends of the first and second lumens and a distal end closed by a distal end wall having an inner surface and an outer surface, a first spray hole formed in the distal end wall and in fluid communication with the distal end of the first lumen, wherein the first spray hole comprises a first protrusion protruding distally from the outer surface of the distal end wall of the dispensing cap, a second spray hole formed in the distal end wall and in fluid communication with the distal end of the second lumen, wherein the second spray hole comprises a second protrusion protruding distally from the outer surface of the distal end wall of the dispensing cap, and an external partition wall protruding distally from the outer surface of the distal end wall of the dispensing cap, wherein the partition wall spans the outer surface of the distal end of the dispensing cap and extends between the first spray hole and the second spray hole to form a barrier between the first spray hole and the second spray hole.

19. The spray tip of claim 18, wherein The dispensing cover further comprises: the cylindrical body comprising a cylindrical wall extending from the proximal end to the distal end of the cylindrical body; an internal dividing wall located inside the cylindrical body and dividing the cylindrical body into two parts, wherein the internal dividing wall extends between the proximal end of the cylindrical body and the inner surface of the distal end wall, and is used to divide the inner surface of the distal end wall into a first area in fluid communication with the distal end of the first lumen and a second area in fluid communication with the distal end of the second lumen.

20. The spray tip of claim 19, further comprising: a first fluid passage formed in the first region of the inner surface of the distal end wall of the dispensing cap, wherein the first fluid passage is located between the distal end of the first lumen and the first spray hole; A second fluid passage is formed in the second region of the inner surface of the distal end wall of the dispensing cap, wherein the second fluid passage is located between the distal end of the second lumen and the second spray hole.

21. The spray tip of claim 20, wherein The first fluid passage includes: a first vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the first injection hole; and a pair of first grooves formed in the inner surface of the distal end wall and extending radially outward from the first vortex chamber, and wherein the second fluid passage includes: a second vortex chamber formed in the inner surface of the distal end wall and in fluid communication with the second injection hole; and a pair of second grooves formed in the inner surface of the distal end wall and extending radially outward from the first vortex chamber.

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