WO2021221967A1

WO2021221967A1 - Spray tip insert and method of using the same

Info

Publication number: WO2021221967A1
Application number: PCT/US2021/028306
Authority: WO
Inventors: Kevin GEPPERT
Original assignee: Nordson Corporation
Priority date: 2020-04-27
Filing date: 2021-04-21
Publication date: 2021-11-04

Abstract

In one example, an insert of a spray tip has a first body including at least one flute and a second body including at least one opening, with the first and second bodies spaced apart such that a channel is defined therebetween. In one example, a spray tip has a housing defining a housing channel and an insert having first and second bodies positioned within the housing channel between an inlet and an exit orifice of the housing channel. In another example, a spray tip has a housing defining a housing channel and an insert having a body positioned within the housing channel between an inlet and an exit orifice of the housing channel, the exit orifice having a cross-sectional dimension increasing as the exit orifice extends along a distal direction such that the exit orifice tapers outwardly as the exit orifice extends along the distal direction.

Description

SPRAY TIP INSERT AND METHOD OF USING THE SAME

CROSS REFERENCE TO RELATED APPLICATIONS

[0001] This application claims priority to U.S. Patent Application No. 63/015,748 filed April 27, 2020, which is incorporated by reference herein in its entirety.

TECHNICAL FIELD

[0002] The present disclosure relates to inserts for the dispensing of various components and methods for dispensing various components using inserts, in particular, to inserts for use in spray tips, and more particularly to inserts for use in spray tips of airless biomaterial delivery devices.

BACKGROUND

[0003] In the medical field, a surgeon routinely needs to deliver a drug or another fluid to an anatomical surface within a surgical site in a patient. Conventional manual and non- manual syringes are often used to deliver these fluids to the surgical site. For example, one known conventional syringe design includes two barrels, each containing separate fluids that are simultaneously dispensed and mixed to form a coating adapted to prevent bleeding at the surgical site. In order to spread the coating over a surface area at the surgical site, the double-barreled syringe may be coupled to a known mixing or blending spray tip, such as the FIBRIJET brand of blending tips that is commercially available from Micromedics of St. Paul, Minnesota. The blending spray tip receives the fluids from each of the two barrels, along with a pressurized gas from a pressurized gas source, to form a therapeutic aerosol that is sprayed over the surface to be coated. The therapeutic aerosol, including, for example, pain relievers, antibiotics, or coagulants, may be applied to the surgical site before, during, or after a surgical procedure.

[0004] The dispensing of various low-viscosity fluids and materials (e.g., water, saline, and low-viscosity fluids and biomaterials) is routinely used in the aforementioned medical procedures. It is also desirable in such medical procedures to dispense or spray high-viscosity fluids and materials. Traditionally, the dispensing or spraying of high- viscosity materials has required the assistance of a pressurized gas, which requires employing large and costly regulators and gas supply sources (typically tethered to a wall). As will be appreciated, these additional parts lead to larger footprints and more costly systems, which makes such systems undesirable in certain settings (e.g., in an operating room). Thus, it would be desirable to provide an “airless” or “gasless” sprayer, which would require less set-up and capital equipment and would not require the sprayer to be tethered to a gas pressure source.

SUMMARY

[0005] In an example, an insert of a spray tip comprises a first body and a second body. The first body includes a proximal end and a distal end. The proximal and distal ends of the first body are offset from one another along a longitudinal axis. The first body further includes an outer surface. The outer surface of the first body extends between the proximal and distal ends. The first body also includes at least one flute. The at least one flute of the first body extends into the outer surface. The at least one flute of the first body also extends from the proximal end to the distal end of the first body. The second body includes a proximal face and a distal face. The proximal and distal faces of the second body are offset from one another along the longitudinal axis. The second body further includes an outer surface. The outer surface of the second body extends between the proximal and distal faces. The second body also includes at least one opening. The at least one opening of the second body extends from the proximal face to the distal face of the second body. The second body is spaced apart from the first body. The second body is spaced apart from the first body along the longitudinal axis. A channel is defined between the first and second bodies. The channel is defined between the distal face of the second body and the proximal end of the first body.

[0006] Another example is a spray tip. The spray tip comprises a tubular housing. The tubular housing of the spray tip includes a proximal end and a distal end. The proximal and distal ends of the spray tip are offset from one another along the longitudinal axis. The proximal end of the housing defines an inlet. The distal end of the housing defines an exit orifice. The housing defines a channel. The channel defined by the housing extends from the inlet to the exit orifice. The inlet is in fluid communication with the channel. The exit orifice is also in fluid communication with the channel. The spray tip also comprises an insert as described herein.

The insert is positioned within the channel. The insert is positioned within the channel between the inlet and the exit orifice.

[0007] A further example is a biomaterial delivery device. The biomaterial delivery device comprises an applicator. The applicator of the biomaterial delivery device incudes a distal end portion. The applicator of the biomaterial delivery device also includes a flow channel extending therethrough. The biomaterial delivery device further comprises a spray tip as described herein. The spray tip is operatively connected to the distal end portion of the applicator. The spray tip is in fluid communication with the flow channel of the applicator.

[0008] In another example, a spray tip comprises a housing and a body. The housing is a tubular housing. The housing of the spray tip includes a proximal end and a distal end. The proximal and distal ends of the spray tip are offset from one another along the longitudinal axis. The proximal end of the housing defines an inlet. The distal end of the housing defines an exit orifice. The housing defines a channel. The channel defined by the housing extends from the inlet to the exit orifice. The inlet is in fluid communication with the channel. The exit orifice is also in fluid communication with the channel. The exit orifice has a cross-sectional dimension perpendicular to the longitudinal axis. In an expanding portion of the exit orifice, the cross- sectional dimension increases as the exit orifice extends along a distal direction. The distal direction extends from the proximal end toward the distal end of the housing. The expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction. The spray tip also comprises a body. The body is positioned within the channel. The body is positioned within the channel between the inlet and the exit orifice. The body includes a proximal end and a distal end. The proximal and distal ends of the body are offset from one another along a longitudinal axis. The body further includes an outer surface. The outer surface of the body extends between the proximal and distal ends. The body also includes at least one flute. The at least one flute of the body extends into the outer surface. The at least one flute of the body also extends from the proximal end to the distal end of the first body.

[0009] A further example is a method of dispensing a fluid. The method comprises a step of directing a flow of the fluid into an inlet of a spray tip. The spray tip includes first and second bodies positioned therein. The first and second bodies positioned in the spray tip are spaced apart from one another along a longitudinal axis. The method comprises a step of receiving the flow of the fluid through at least one opening that extends through the second body. The at least one opening also extends into a channel between the first and second bodies. The method further comprises a step of receiving the flow of the fluid from the channel. The flow of the fluid received from the channel is received through at least one flute of the first body. The at least one flute of the first body causes the fluid to transition to a rotational flow of the fluid. The method further comprises discharging the rotational flow of the fluid. The rotational flow of the fluid is discharged from an exit orifice of the spray tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The following description of the illustrative examples may be better understood when read in conjunction with the appended drawings. It is understood that potential examples of the disclosed systems and methods are not limited to those depicted.

[0011] FIG. 1 shows a top perspective view of an insert according to one example;

[0012] FIG. 2 shows a bottom perspective view of the insert of FIG. 1 according to one example;

[0013] FIG. 3 shows a side view of the insert of FIG. 1 according to one example;

[0014] FIG. 4 shows a top view of the insert of FIG. 1 according to one example;

[0015] FIG. 5 shows a bottom view of the insert of FIG. 1 according to one example;

[0016] FIG. 6 shows a perspective exploded view of a spray tip housing according to one example, with an insert and a housing;

[0017] FIG. 7 shows a perspective cross-sectional view of the spray tip of FIG. 6 according to one example, with the insert positioned within the housing;

[0018] FIG. 8 shows a perspective view of the housing of the spray tip of FIG. 6 according to one example;

[0019] FIG. 9 shows a side cross-sectional view of the housing of the spray tip of FIG.

6 according to one example;

[0020] FIG. 10 shows a perspective exploded view of a spray tip housing according to one example, with an insert and a housing;

[0021] FIG. 11 shows a perspective cross-sectional view of the spray tip of FIG. 10 according to one example, with the insert positioned within the housing;

[0022] FIG. 12 shows a perspective view of the housing of the spray tip of FIG. 10 according to one example; and

[0023] FIG. 13 shows a side cross-sectional view of the housing of the spray tip of FIG. 10 according to one example.

DETAILED DESCRIPTION

[0024] In the following detailed description, reference is made to the accompanying drawings, which form a part hereof. In the drawings, similar symbols identify similar components, unless context dictates otherwise. The illustrative examples described in the detailed description and drawings are not meant to be limiting and are for explanatory purposes. Other examples may be utilized, and other changes may be made, without departing from the spirit or scope of the subject matter presented herein. It will be readily understood that the aspects of the present disclosure, as generally described herein and illustrated in the drawings, may be arranged, substituted, combined, and designed in a wide variety of different configurations, each of which are explicitly contemplated and form a part of this disclosure.

[0025] It should be noted that some of the terms used herein may be relative terms. For example, the terms “proximal” and “distal” generally refer to positions or directions toward and away from, respectively, another position, such as a user of the inserts, spray tips, or biomaterial delivery devices described herein. The words “longitudinal,” “radial,” and “transverse” designate directions in the drawings to which reference is made. The term “substantially” is intended to mean considerable in extent or largely but not necessarily wholly that which is specified. The terminology includes the above-listed words, derivatives thereof and words of similar import.

[0026] While conventional inserts, spray tips, and biomaterial delivery devices have been adequate for their intended purpose, there is a need for an insert for a spray tip that is capable of dispensing or spraying high viscosity fluids without assistance from pressurized air. There is also a need for an insert for a spray tip that can transition a flow of fluid therein to a rotational flow of the fluid.

[0027] The inserts, spray tips, and biomaterial delivery devices of the present disclosure can be used in a variety of applications as will be readily appreciated by those skilled in the art. By way of non-limiting example, it is contemplated that the foregoing may be used in general laparoscopic surgery, such as to apply (e.g., by dispensing or spraying) a fluid (e.g., a sterile fluid) or a biomaterial (e.g., hemostat, PRP) as part of the laparoscopic surgery (e.g., to an organ to retard or stop bleeding).

[0028] Referring first to FIG. 6, an example of a spray tip 40 is shown. The spray tip 40 comprises a housing 400 and an insert 10 according to one example. In examples as described herein, the insert 10 (e.g., a first body 100, a second body 200, or both) may be positioned within the housing 400 of the spray tip 40. For example, in the example illustrated in FIG. 6, an insert 10 is positioned within the housing 400 of spray tip 40. As shown in FIG. 6, the housing 400 may be a tubular housing. A fluid, biomaterials, or a combination thereof may be received axially within the housing 400. The housing 400 and the insert 10 disposed therein may cause the fluid to be discharged (e.g., sprayed) radially outwardly from the housing.

[0029] Turning now to FIGS. 1-5, an insert 10 is shown according to one example.

This exemplary insert 10 comprises a first body 100 and a second body 200. The insert 10 may be of any suitable shape. In certain examples, at least a portion of the insert 10 may be cylindrical. For example, the second body 100 may be cylindrical (e.g., as shown in FIGS. 1-5).

[0030] The first body 100 may include a proximal end 102 and a distal end 104. The proximal and distal ends 102, 104 of the first body 100 may be offset from one another along a longitudinal axis A of the insert 10. More particularly, the distal end 102 of the first body 100 may be offset from the proximal end 104 of the first body 100 along a distal direction D, and the proximal end 104 of the first body 100 may be offset from the distal end 102 of the first body 100 along a proximal direction P, opposite the distal direction D. In particular examples, a central axis may pass through a center of the insert 10, and the first body 100 may be positioned such that the central axis passes through a center of the first body 100.

[0031] The first body may also include an outer surface 106. The outer surface 106 of the first body 100 generally extends between the proximal and distal ends 102, 104 thereof. In particular, the outer surface 106 of the first body 100 may interconnect the proximal and distal ends 102, 104 thereof. The first body 100 may be of any suitable shape. In certain exemplary examples, at least a portion of the first body 100 may be cylindrical. More particularly, in certain examples, at least a portion of the first body 100 may be planar and another portion of the first body 100 may be tapered. For example, as can be best seen in FIG. 3, the proximal end 102 of the first body 100 may be planar. As can also be seen in FIG. 3, at least a portion of the first body 100 may be tapered as it extends in the distal direction D. In particular, the outer surface 106 can be tapered inwardly as it extends in the distal direction D.

[0032] The second body 200 may include a proximal face 202 and a distal face 204.

The proximal and distal faces 202, 204 of the second body 200 may be offset from one another along the longitudinal axis A of the insert 10. More particularly, the distal face 202 of the second body 200 may be offset from the proximal face 204 of the second body 200 along the distal direction D, and the proximal face 204 of the second body 200 may be offset from the distal face 202 of the second body 200 along the proximal direction P. In particular examples, a central axis may pass through a center of the insert 10, and the second body 200 may be positioned such that the central axis passes through a center of the second body 200.

[0033] The second body 200 may also include an outer surface 206. The outer surface 206 of the second body 200 generally extends between the proximal and distal ends 202, 204 thereof. In particular, the outer surface 206 of the second body 200 may interconnect the proximal and distal faces 202, 204 thereof. In FIG. 1 and FIG. 2, one or more recessed portions are shown extending into the outer surface 206 of the second body 200. These one or more recessed portions are optional and may be configured to assist in the manufacturing of the second body (e.g., by allowing sufficient space for an injection molding gate). The recessed portions may be spaced apart from one another about a select rotational direction RD (which can be clockwise or counterclockwise as viewed in the proximal direction P or distal direction D). The second body 200 may be of any suitable shape. In certain exemplary examples, at least a portion of the second body 200 may be cylindrical. More particularly, in certain exemplary examples, at least a portion of the second body 200 may be planar. For example, as can be best seen in FIG.

3, the proximal end 202 of the second body 200 may be planar. As can also be seen in FIG. 3, the distal end 204 of the second body 200 may also be planar.

[0034] The second body 200 is generally spaced apart from the first body 100 along the longitudinal axis A of the insert 10. More particularly, the second body 200 may be offset from the first body 100 along the proximal direction P, and the first body 100 may be offset from the second body 200 along the distal direction D. In this way, a channel 300 may be defined between the first body 100 and the second body 200. More particularly, the channel 300 may be defined between the distal face 204 of the second body 200 and the proximal end 102 of the first body 100. The channel 300 may define an open space between the first and second bodies 100, 200 (e.g., between the distal face 204 of the second body 200 and the proximal end 102 of the first body 100) within which fluid or other materials may flow or be disposed. As will be appreciated, the channel 300 may be configured to receive fluid or other materials that pass through the second body 200. As will be further appreciated, the channel 300 may be configured to pass fluid or other materials to the first body 100. In this way, fluid or other materials may pass through the second body 200, be received in the channel 300, and then pass through the first body 100. Put another way, in operation, the first body 100 is generally positioned downstream of the channel 300, and the channel 300 is generally positioned downstream of the second body 200

[0035] The first body 100 may further include at least one flute 110. The flute 110 generally extends into the outer surface 106 of the first body. More specifically, the flute 110 generally extends from the proximal end 102 to the distal end 104 of the first body 100. In this way, fluid or other materials may pass through the first body 100 by passing through the flute 110 thereof. The at least one flute 110 can comprise a plurality of flutes (e.g., flutes 1 lOa-c). In the example illustrated in FIGS. 1-5, the first body 100 includes three flutes, though it is to be understood that the number of flutes could be greater of fewer depending on the particular application. In examples, the first body 100 may include one flute, two flutes, three flutes, four flutes, or five or more flutes. Each flute may generally be defined by two or more inner surfaces extending inwardly from the outer surface 106 of the first body 100. As can be seen and understood with reference to FIGS. 1-3, the flute(s) 110 of the first body 100 may be open to and in fluid communication with the channel 300. More particularly, fluid and other materials can be received from the channel 300 through the flute(s) 110 of the first body 100.

[0036] With reference to FIG. 4, each flute can be defined by first and second inner surfaces that face one another. For example, in FIG. 4, it can be seen that flute 110a is defined by a first inner surface 112c and a second inner surface 114a, flute 110b is defined by a first inner surface 112a and a second inner surface 114b, and flute 110c is defined by a first inner surface 112b and a second inner surface 114c. In this way, each flute 1 lOa-c is generally defined by a first inner surface 112a-c and an adjacent second inner surface 114a-c, each of which extend inwardly from the outer surface 106 of the first body 100. Each of the first inner surfaces 112a-c is generally spaced apart from an adjacent one of the second inner surfaces 114a-c with a corresponding one of the flutes 1 lOa-c defined (i.e., positioned) therebetween. In the example illustrated in FIG. 4, each of the first inner surfaces 112a-c is spaced apart from an adjacent one of the second inner surfaces 114a-c about the select rotational direction RD. Additionally, it can be seen that, in this example, the flutes 1 lOa-c are spaced apart from one another about the select rotational direction RD. In other words, the flutes 1 lOa-c are spaced from one another about the outer surface 106.

[0037] Additionally, each of the first inner surfaces 112a-c may be angled with respect to an adjacent one of the second inner surfaces 114a-c such that the corresponding one of the flutes 1 lOa-c defined therebetween decreases in width from the outer surface 106 of the first body 100 inward. For example, first inner surface 112c is angled with respect to second inner surface 114a such that flute 110a defined therebetween between decreases in width from the outer surface 106 inward. In the same way, first inner surface 112a is angled with respect to second inner surface 114b such that flute 110b defined therebetween between decreases in width from the outer surface 106 inward, and first inner surface 112b is angled with respect to second inner surface 114c such that flute 110c defined therebetween between decreases in width from the outer surface 106 inward.

[0038] In examples, the insert 10 may include arcuate end portions 116a-c. The arcuate end portions 116a-c may be curved in the select rotational direction RD. In certain examples, corresponding ones of the first inner surfaces 112a-c and the second inner surfaces 114a-c may have a corresponding arcuate end portion 116a-c extending therebetween. Put another way, each of the arcuate end portions 116a-c may extend from one of the second inner surfaces 114a-c to a corresponding one of the first inner surfaces 112a-c. In this way, each of the arcuate end portions 116a-c may interconnect one of the second inner surfaces 114a-c to a corresponding one of the first inner surfaces 112a-c. For example, in the example illustrated in FIG. 4, arcuate end portion 116a extends between and interconnects first inner surface 112a and second inner 114a. Similarly, arcuate end portion 116b extends between and interconnects first inner surface 112b and second inner surface 114b, and arcuate end portion 116c extends between and interconnects first inner surface 112c and second inner surface 114c. In specific examples, each flute may have a dimension, such as a width, of from about 0.013 to about 0.017 inches as measured between corresponding ones of the first and second inner surfaces of adjacent dividing lands proximate the arcuate end portion. In more specific examples, each flute may have a dimension, such as a width, of about 0.015 inches as measured between corresponding ones of the first and second inner surfaces of adjacent dividing lands proximate the arcuate end portion. For example, in the example illustrated in FIG. 4, flute 110a may have a dimension Dnoa of about 0.015 inches as measured between arcuate end portion 116c and second inner surface 114a. Similarly, flute 110b may have a dimension Diiot_> of about 0.015 inches as measured between arcuate end portion 116a and second inner surface 114b, and flute 110c may have a dimension Dnoc of about 0.015 inches as measured between arcuate end portion 116b and second inner surface 114c. It has been found that a flute diameter of about 0.015 inches is important to the efficacy of the insert (e.g., to cause rotation of the fluid flow as described herein). However, as will be appreciated by those skilled in the art, other dimensions could be employed.

[0039] As may now be appreciated, the outer surface 106 of the first body 100 and corresponding ones of the first and second inner surfaces may generally define a dividing land. For example, as can be best seen in FIG. 4, first inner surface 112a, second inner surface 114a, and a portion 106a of the outer surface 106 of the first body 100 may collectively define a first dividing land 130a. Similarly, first inner surface 112b, second inner surface 114b, and a portion 106b of the outer surface 106 of the first body 100 may collectively define a second dividing land 130b, and first inner surface 112c, second inner surface 114c, and a portion 106c of the outer surface 106 of the first body may collectively define a third dividing land 130c. As a result, in the example illustrated in FIGS. 1-5, the first body 100 includes three dividing lands, though it is to be understood that the number of dividing lands could be greater or fewer depending on the particular application. As may be appreciated, the number of dividing lands may generally correspond directly to the number of flutes. In examples, the first body 100 may include one dividing land, two dividing lands, three dividing lands, four dividing lands, or five or more dividing lands.

[0040] Each dividing land may generally be defined by at least a portion of the outer surface 106 of the first body 100 and two or more inner surfaces 112, 114 extending inwardly from the outer surface 106. In particular, the corresponding first and second infer surfaces 112,

114 defining each dividing land may meet inwardly of the outer surface 106 of the first body 100. For example, as can be best seen in FIG. 4, first inner surface 112a and second inner surface 114a may meet one another inwardly of portion 106a of the outer surface 106 of the first body 100. Similarly, first inner surface 112b and second inner surface 114c may meet one another inwardly of portion 106b of the outer surface 106 of the first body 100, and first inner surface 112c and second inner surface 114c may meet one another inwardly of portion 106c of the outer surface 106 of the first body 100.

[0041] Each of the dividing lands 130a-c is generally spaced apart from an adjacent one of the dividing lands a-c with a corresponding one of the flutes 1 lOa-c defined (i.e., positioned) therebetween. For example, dividing land 130a is spaced apart from dividing land 130b with flute 110b defined therebetween, and dividing land 130a is likewise spaced apart from dividing land 130c with flute 10a defined therebetween. Similarly, dividing land 130b is spaced apart from dividing land 130c with flute 110c defined therebetween. In the example illustrated in FIG. 4, each of the dividing lands 130a-c is spaced apart from an adjacent one of the dividing lands 130a-c about the select rotational direction RD. The dividing lands may generally define at least a portion of the distal end 104 of the first body 100. In particular examples, a central axis may pass through a center of the insert 10, and the dividing land(s) may be positioned such that the central axis does not pass through the dividing land(s).

[0042] As can be seen in FIG. 4, the first body 100 may further include a central recess 120. The central recess 120 may extend into the distal end 104 of the first body 100 along longitudinal axis A. The central recess 120 may be positioned inwardly with respect to the outer surface 106 o the first body 100. The flute(s) 110 extend inwardly from the outer surface 106 of the first body 100 and are open to and in fluid communication with the central recess 120. The central recess 120 may generally be defined by at least one of the first or the second inner surfaces. For example, in the example illustrated in FIG. 4, the central recess 120 is generally defined by second inner surface 114a, second inner surface 114b, and second inner surface 114c. The central recess 120 may be defined by and between the dividing lands 130a-c. It should be appreciated that the central recess 120 may be of any suitable shape. For example, in the example illustrated in FIG. 4, the central recess 120 has a generally circular shape as defined by second inner surface 114a, second inner surface 114b, and second inner surface 114c. In particular examples, a central axis may pass through a center of the insert 10, and the central recess 120 may be positioned such that the central axis passes through a center of the central recess 120.

[0043] The second body 200 may further include at least one opening 210. The opening 210 generally extends from the proximal face 202 to the distal face 204 of the second body 200. Put another way, the opening 210 of the second body 200 extends completely through the second body 200. In this way, fluid or other materials may pass through the second body 200 by passing through the opening 210 thereof. In the example illustrated in FIGS. 1-5, the second body 200 includes six openings, though it is to be understood that the number of openings could be greater of fewer depending on the particular application. In examples, the second body 200 may include one opening, two openings, three openings, four openings, five openings, six openings, seven openings, or eight or more openings. Each opening may be positioned inwardly of the outer surface 206 of the second body 200. In particular examples, the opening(s) of the second body 200 are not aligned with the flute(s) of the first body 100. Non-alignment between the opening(s) of the second body 200 and the flute(s) of the first body 100 helps to ensure that as fluid or materials pass through each of the first and second bodies 100, 200, the flow type may remain at or may be transitioned to another flow type, as explained in more detail herein. As can be best seen in FIG. 5, the second body 200 of this example includes six openings 210a-f. As can be further seen, the openings 210a-f are circumferentially spaced apart from one another about the second body 200. As can be seen and understood with reference to FIGS. 1-3, the opening(s) 210 of the second body 200 may be open to and in fluid communication with the channel 300. More particularly, fluid and other materials can be received into the channel 300 through the opening(s) 210 of the second body 200.

[0044] In FIG. 5, a central recess 220 is shown extending into the proximal face 202 of the second body 200. The central recess 220 may be configured to assist in the manufacturing of the second body (e.g., by increasing easy in assembly and manufacturing, by serving as a “core out” to minimize or reduce the occurrence of sink and/or shrinkage in the part when injection molded). The central recess 220 may extend into the proximal face 202 of the second body 200 along longitudinal axis A. The central recess 220 may be positioned inwardly with respect to the outer surface 206 of the second body 200. The opening(s) 210 may be spaced apart from the central recess 220 such that the opening(s) are not open to or in fluid communication with the central recess 220. It will be understood that the central recess 220 is optional and may be omitted in other examples.

[0045] With specific reference now to FIGS. 7-9, housing 400 of the spray tip 40 has a proximal end 402 and a distal end 404 offset from one another along the longitudinal axis A. In examples, the proximal end 402 of the housing 400 may define an inlet 420. The inlet 420 may be configured to receive fluid and other materials therethrough. In examples, the distal end 404 of the housing 400 may define an exit orifice 440. The exit orifice 440 may be configured to discharge fluid and other materials therefrom. The housing 400 may define a housing channel 410. The housing channel 410 may extend from the inlet 420 to the exit orifice 440. The inlet 420 may be in fluid communication with the housing channel 410. The exit orifice 440 may also be in fluid communication with the housing channel 410. The housing channel 410 may, in certain examples, be tapered from the proximal end 402 to the distal end 404 of the housing 400. The housing 400 may, in particular examples, include a distal end wall 450. The exit orifice 440 may extend into the distal end wall 450 along a proximal direction P. The housing 400 may, in specific examples, include an outer wall 460 extending from the distal end wall 450 to the proximal end 402 of the housing 400. The outer wall 460 of the housing 400 may define the housing channel 410 therein.

[0046] As can be seen in FIG. 7, the insert 10 may be positioned within the housing channel 410 of the housing 400 between the inlet 420 and the exit orifice 440 thereof. In examples, the insert 10 may be positioned within the housing channel 410 of the housing 400 closer to the exit orifice 440 than the inlet 420. More particularly, the insert 10 may be positioned within the housing channel 410 of the housing 400 directly adjacent to the exit orifice 440, such that fluid and other materials is discharged from the exit orifice 440 directly after flowing through the insert 10.

[0047] As shown in FIG. 9, the exit orifice 440 has a proximal end 442 and a distal end 444 offset from one another along the longitudinal axis A. As further shown in FIG. 9, the exit orifice 440 may include a lead-in portion 446 proximate the proximal end 442 thereof. The exit orifice 440 may also include an expanding portion 446a proximate the distal end 444 thereof. In examples, the lead-in portion 446 of the exit orifice 440 may extend from the proximal end 442 of the exit orifice in the distal direction D, the expanding portion 446a of the exit orifice 440 may extend from the distal end 444 of the exit orifice 440 in the proximal direction P, and the lead-in portion 446 and the expanding portion 446a may connect between the proximal end 442 and the distal end 444 of the exit orifice. The cross-sectional dimension of the lead-in portion 446 may decrease as the exit orifice 440 extends along a distal direction D that extends from the proximal end 402 toward the distal end 404 of the housing 400. In this way, the lead-in portion 446 may be tapered inwardly as the lead-in portion extends along a distal direction D that extends from the proximal end 402 toward the distal end 404 of the housing 400. Where the lead-in portion 446 connects to the expanding portion 446a, the exit orifice 440 has a cross-sectional dimension DEO substantially perpendicular to the longitudinal axis A. The exit orifice 440 also has a length LEO substantially perpendicular to the cross-sectional dimension DEO. The length LEO of the exit orifice 440 generally extends from the proximal end 442 to the distal end 444 thereof. The cross- sectional dimension of the expanding portion 446a may increase as the exit orifice 440 extends along a distal direction D that extends from the proximal end 402 toward the distal end 404 of the housing 400. In this way, the expanding portion 446a portion may be tapered outwardly as the expanding portion extends along a distal direction D that extends from the proximal end 402 toward the distal end 404 of the housing 400. More particularly, at least a portion of the exit orifice 440 may, in certain examples, define a conical or frustoconical shape. The cross- sectional dimension of the exit orifice 440 at both its proximal end 442 and its distal end 444 may, in particular examples, be less than a diameter of the housing channel 410 of the housing 400 (e.g., as shown in FIG. 9). In specific examples, a ratio of the length LEO of the exit orifice 440 to the cross-sectional dimension DEO of the exit orifice 440 where the lead-in portion 446 meets the expanding portion 446a may be from about 1.5:1 to about 2.2:1. In more specific examples, the ratio of the length LEO of the exit orifice 440 to the cross-sectional dimension DEO of the exit orifice 440 where the lead-in portion 446 meets the expanding portion 446a may be about 1.82:1.

[0048] In operation, the spray tip 40 receives a flow of fluid at the inlet 420. The flow may be received from, for example, one or more syringes. In particular embodiments, the system may rely on pressure feed. In certain applications, the flow of the fluid received at the inlet 420 is a laminar flow of fluid. The fluid flows from the inlet 420 through the housing channel 410 to the insert 10. In general, the second body 200 of insert 10 is positioned upstream of the channel 300 of insert 10, and the channel 300 is positioned upstream of the first body 100 of insert 10. Put another way, the first body 100 is generally positioned within housing channel 410 closer to the exit orifice 440 than the second body 200. As a result, the fluid from the inlet 420 is generally received at the insert 10 by the second body 200.

[0049] The second body 200 (e.g., by operation of the opening(s) thereof) is configured to cause the flow of fluid to pass to the channel 300 as a turbulent flow of fluid. As such, in applications in which the flow of fluid received at the inlet 420 is a laminar flow of fluid, the second body 200 is configured to cause the laminar flow of fluid to transition to a turbulent flow of flow in the channel 300. In other applications in which the flow of fluid received at the inlet 420 is a turbulent flow of fluid, the second body 200 is configured to cause the turbulent flow of fluid to remain at a turbulent flow of flow in the channel 300.

[0050] The first body 100 (e.g., by operation of the flute(s) thereof) is configured to cause the flow of fluid to pass to the exit orifice 440 as a rotational flow of fluid. In other words, the first body 100 (e.g., by operation of the flute(s) thereol) is configured to cause a non- rotational flow of fluid to transition to a rotational flow of fluid. As such, in applications in which the flow of fluid received at the inlet 420 is a laminar flow of fluid and the second body 200 causes the laminar flow of fluid to transition to a turbulent flow of flow in the channel 300, the first body 100 may be configured to cause the flow of fluid to transition from the turbulent flow of fluid in the channel 300 to a rotational flow of fluid. In other applications in which the flow of fluid received at the inlet 420 is a turbulent flow of fluid and the second body 200 causes the turbulent flow of fluid to remain at a turbulent flow of fluid in the channel 300, the first body 100 may be configured to cause the flow of fluid to transition from the turbulent flow of fluid in the channel 300 to a rotational flow of fluid. Further yet, the flow of fluid received at the inlet 420 may be a non-rotational flow of fluid, the second body 200 may be configured to cause the non-rotational flow of fluid to remain a non-rotational flow of fluid in the channel, and the first body 100 may be configured to cause the non-rotational flow of fluid in the channel 300 to transition to a rotational flow of fluid. As used herein, “rotational” refers to the direction of the flow, and “turbulent” refers to the extent of internal “churning” inside the flow of the fluid. As a result, it is to be understood that the flow of fluid may be both a rotational flow of fluid and a turbulent flow of fluid (e.g., referred to as a “turbulent and rotational flow of fluid” for simplicity). Put another way, in certain embodiments, the rotational flow of fluid in the channel 300 may also be considered a turbulent flow of fluid or a turbulent and rotational flow of fluid. As such, when the turbulent flow of fluid reaches the first body and the flute(s) thereof, the first body may be configured to cause the turbulent flow of fluid to remain a turbulent flow of fluid and also cause such turbulent flow of fluid to rotate (i.e., thereby effectively causing the turbulent flow of fluid to become a turbulent and rotational flow of fluid).

[0051] The exit orifice 440 may be configured to receive the flow of fluid after passing through the insert 10 and discharge the flow of fluid therefrom. In particular applications, the exit orifice 440 may be configured to receive the rotational flow of fluid from the first body 100 of the insert 10. The exit orifice 440 may be further configured to discharge the rotational flow of fluid therefrom. In specific examples, the exit orifice 440 may be configured to cause the fluid to fan outwardly as the fluid is discharged therefrom. In certain examples, the exit orifice 440 may be configured to discharge the rotational flow of fluid therefrom in a cone-shape sheet of fluid. In particular examples, the exit orifice may be configured to discharge a fluid and other materials therefrom in a spray pattern having a diameter of from about 0.5 inches to about 7 inches (including from about 0.5 inches to about 4 inches) at a distance of about 2 inches away from the distal end 444 of the exit orifice 440 in the distal direction D. In specific examples, the exit orifice may be configured to discharge a fluid and other materials therefrom in a spray pattern having a diameter of at least 1.1 inches at a distance of about 2 inches away from the distal end 444 of the exit orifice 440 in the distal direction D. In particular examples, the exit orifice may be configured to discharge a fluid and other materials therefrom in a spray pattern having a spray angle of from about 15° to about 120° as measured between the two adjacent sides of the spray pattern being discharged from the exit orifice. In specific examples, the exit orifice may be configured to discharge a fluid and other materials therefrom in a spray pattern having a spray angle of at least 28°. Advantageously, the shape of the exit orifice in combination with the first and second bodies is such that the spray tip is capable of discharging the flow of fluid in a desired spray pattern without assistance from a pressurized gas source.

[0052] In certain examples, the spray tip 40 may be used as part of a medical procedure (e.g., a laparoscopic procedure). More particularly, at a minimum, discharging of the fluid flow can occur during the medical procedure. To effectively use the spray tip, as can be best seen in FIG. 7, the proximal end 402 of the housing 400 of spray tip 40 may include a coupler 42 configured to operatively couple the spray tip 40 to a distal end portion of an applicator of a biomaterial delivery device such that the spray tip 40 is in fluid communication with a flow channel of the applicator. More particularly, the coupler 42 of spray tip 40 is a luer lock coupler. In this way, spray tip 40 may be specifically configured for use in in certain medical procedures (e.g., spray procedures). More specifically, the luer lock coupler 42 of spray tip 40 may be connected to known syringes.

[0053] Turning now to FIGS. 10-13, another example of a spray tip 50 is shown. Spray tip 50 is the same as spray tip 40 in all respects except that, as can be best seen in FIG. 11, the proximal end 502 of the housing 500 of spray tip 50 may include a coupler 54 configured to operatively couple the spray tip 50 to a distal end portion of an applicator of a biomaterial delivery device such that the spray tip 50 is in fluid communication with a flow channel of the applicator, with the coupler 52 of spray tip 50 being a threaded coupler. In this way, spray tip 50 may be specifically configured for use in certain medical procedures (e.g., laparoscopic procedures). More specifically, the threaded coupler 52 of spray tip 50 may be connectable to known laparoscopic trocars having mating threads.

[0054] Advantageously, the above-described biomaterial delivery devices are capable of operating (e.g., to discharge the flow of fluid from the exit orifice of the spray tip) without assistance from a pressurized gas source.

[0055] While the above-described inserts, spray tips, and biomaterial delivery devices are described with reference to a flow of fluid, it is to be understood that a wide variety of fluids and that, in addition or alternatively thereto, a wide variety of materials can likewise be used.

For example, it is specifically contemplated that, in certain examples, the above-described inserts, spray tips, and biomaterial delivery devices can be used with multi-component fluids or materials. In such examples, the multi-component fluid or material can be mixed therein.

[0056] Various aspects of the present disclosure can be understood in view of the following examples:

[0057] Example 1. An insert of a spray tip that is configured to spray a fluid, the insert comprising: a first body including a proximal end and a distal end offset from one another along a longitudinal axis, an outer surface that extends between the proximal and distal ends, and at least one flute extending into the outer surface and from the proximal end to the distal end of the first body; and a second body including a proximal face and a distal face offset from one another along the longitudinal axis, an outer surface that extends between the proximal and distal faces, and at least one opening extending from the proximal face to the distal face of the second body, the second body spaced apart from the first body along the longitudinal axis such that a channel is defined between the distal face of the second body and the proximal end of the first body.

[0058] Example 2. The insert of Example 1, wherein the at least one opening of the second body is not aligned with the at least one flute of the first body.

[0059] Example 3. The insert of any of the preceding Examples, wherein the at least one flute is defined by a first inner surface extending inwardly from the outer surface of the first body and an adjacent second inner surface extending inwardly from the outer surface of the first body, the first and second inner surfaces spaced apart from one another about a select rotational direction. [0060] Example 4. The insert of Example 3, wherein the first inner surface is angled with respect to the second inner surface such that the at least one flute decreases in width from the outer surface inward.

[0061] Example 5. The insert of Example 3, wherein the second inner surface includes an arcuate end portion extending therefrom, the arcuate end portion of the second inner surface curved in the select rotational direction.

[0062] Example 6. The insert of Example 3, wherein the first and second inner surfaces do not contact one another.

[0063] Example 7. The insert of Example 3, wherein the first and second inner surfaces contact one another inwardly of the outer surface of the first body.

[0064] Example 8. The insert of Example 3, wherein at least one of the first and second inner surfaces of the first body at least partially define the at least one flute.

[0065] Example 9. The insert of any of the preceding Examples, wherein the first body further includes a central recess extending into the distal end along the longitudinal axis, the central recess positioned inwardly with respect to the outer surface of the first body such that the at least one flute is open to and in fluid communication with the central recess.

[0066] Example 10. The insert of Example 9, wherein at least one of the first and second inner surfaces of the first body at least partially define the central recess.

[0067] Example 11. The insert of any of the preceding Examples, wherein the first body further includes a plurality of dividing lands offset from one another about a select rotational direction, each of the plurality of dividing lands at least partially defining the distal end of the first body.

[0068] Example 12. The insert of Example 11, wherein each of the plurality of dividing lands includes a first inner surface extending inwardly from the outer surface of the first body and a second inner surface extending inwardly from the outer surface of the first body, the first and second inner surfaces spaced apart from one another about the select rotational direction and meeting inwardly of the outer surface of the first body.

[0069] Example 13. The insert of Example 11, wherein the at least one flute is defined between adjacent ones of the plurality of dividing lands.

[0070] Example 14. The insert of Example 11, wherein a central axis of the insert does not intersect any of the plurality of dividing lands.

[0071] Example 15. The insert of any of the preceding Examples, wherein the longitudinal axis extends through a center of the first body. [0072] Example 16. The insert of any of the preceding Examples, wherein the longitudinal axis extends through a center of the second body.

[0073] Example 17. The insert of any of the preceding Examples, wherein the at least one opening of the second body is positioned inward of the outer surface of the second body.

[0074] Example 18. The insert of any of the preceding Examples, wherein the proximal end of the first body is planar.

[0075] Example 19. The insert of any of the preceding Examples, wherein the distal end of the first body is tapered toward the outer surface of the first body.

[0076] Example 20. The insert of any of the preceding Examples, wherein the proximal end of the second body is planar.

[0077] Example 21. The insert of any of the preceding Examples, wherein the distal end of the second body is planar.

[0078] Example 22. The insert of any of the preceding Examples, wherein the second body is cylindrical.

[0079] Example 23. The insert of any of the preceding Examples, wherein the second body includes one or more recessed portions extending into the outer surface of the second body.

[0080] Example 24. The insert of any of the preceding Examples, wherein the at least one flute of the first body is at least partially defined by at least one inner surface extending inwardly from the outer surface of the first body.

[0081] Example 25. The insert of any of the preceding Examples, wherein the at least one flute includes a plurality of flutes spaced apart from one another about the select rotational direction.

[0082] Example 26. The insert of any of the preceding Examples, wherein the at least one opening includes a plurality of openings circumferentially spaced apart from one another about the second body.

[0083] Example 27. A spray tip, comprising: a tubular housing having a proximal end and a distal end offset from one another along the longitudinal axis, the proximal end defining an inlet, the distal end defining an exit orifice, and the housing defining a channel that extends from the inlet to the exit orifice, the inlet and exit orifice each in fluid communication with the channel; and the insert of any of the preceding Examples positioned within the channel between the inlet and the exit orifice. [0084] Example 28. The spray tip of Example 27, wherein the inlet is configured to receive a flow of fluid therethrough and the at least one opening of the second body is configured to cause the flow of fluid to be output from the exit orifice as a turbulent flow of fluid when the flow of fluid received at the inlet is a non-turbulent flow of fluid.

[0085] Example 29. The spray tip of any of Examples 27 and 28, wherein the first body is positioned within the channel closer to the exit orifice than the second body such that the first body is positioned downstream of the second body; and the at least one flute of the first body is configured to cause a non-rotational flow of fluid in the channel to transition to a rotational flow of fluid.

[0086] Example 30. The spray tip of any of Examples 27 to 29, wherein an expanding portion of the exit orifice has a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction.

[0087] Example 31. The spray tip of any of Examples 27 to 30, wherein the channel of the housing is tapered from the proximal end to the distal end of the housing.

[0088] Example 32. The spray tip of any of Examples 27 to 31, wherein the exit orifice has a diameter than is less than a diameter of the channel of the housing.

[0089] Example 33. The spray tip of any of Examples 27 to 32, wherein the exit orifice is configured to discharge a rotational flow of fluid therefrom.

[0090] Example 34. The spray tip of any of Examples 27 to 33, wherein the exit orifice is configured to discharge a rotational flow of fluid therefrom in the form of a cone-shaped sheet of fluid.

[0091] Example 35. The spray tip of any of Examples 27 to 34, wherein the exit orifice expands as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the exit orifice defines a conical shape.

[0092] Example 36. The spray tip of any of Examples 27 to 35, wherein the exit orifice is configured to discharge a fluid therefrom in a spray pattern having a diameter of at least 1.1 inches at a distance of about 2 inches away from the distal end of the exit orifice in the distal direction and/or a spray pattern having a spray angle of at least 28°.

[0093] Example 37. The spray tip of any of Examples 27 to 36, wherein the exit orifice is configured to discharge a fluid therefrom in a spray pattern having a diameter of from about 0.5 inches to about 4 inches at a distance of about 2 inches away from the distal end of the exit orifice in the distal direction and/or a spray pattern having a spray angle of from about 15° to about 120°.

[0094] Example 38. The spray tip of any of Examples 27 to 37, wherein the housing includes a distal end wall.

[0095] Example 39. The spray tip of Example 38, wherein the exit orifice extends into the distal end wall along a proximal direction and is open to and in fluid communication with the channel.

[0096] Example 40. The spray tip of Example 38, wherein the housing includes an outer wall extending from the distal end wall to the proximal end of the housing.

[0097] Example 41. The spray tip of Example 40, wherein the outer wall of the housing defines the channel therein.

[0098] Example 42. A biomaterial delivery device, comprising: an applicator having a distal end portion and a flow channel extending therethrough; and the spray tip of any of Examples 27 to 41, the spray tip operatively connected to the distal end portion of the applicator such that the spray tip is in fluid communication with the flow channel of the applicator.

[0099] Example 43. The biomaterial delivery device of Example 42, wherein the spray tip housing includes a coupler configured to couple to the applicator.

[00100] Example 44. The biomaterial delivery device of Example 43, wherein the coupler includes a luer lock.

[00101] Example 45. The biomaterial delivery device of Example 43, wherein the coupler includes threads.

[00102] Example 46. A spray tip, comprising: a tubular housing having a proximal end and a distal end offset from one another along a longitudinal axis, the proximal end defining an inlet, the distal end defining an exit orifice, and the housing defining a channel that extends from the inlet to the exit orifice, the inlet and exit orifice each in fluid communication with the channel, and an expanding portion of the exit orifice having a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction; and a body positioned within the channel between the inlet and the exit orifice, the body including a proximal end, a distal end offset from the body proximal end along the longitudinal axis, and an outer surface that extends between the body proximal end and the body distal end, the body defining at least one flute that extends into the outer surface and extends from the body proximal end to the body distal end.

[00103] Example 47. The spray tip of Example 46, wherein the inlet is configured to receive a flow of fluid therethrough and the at least one opening of the second body is configured to cause the flow of fluid to be output from the exit orifice as a turbulent flow of fluid when the flow of fluid received at the inlet is a non-turbulent flow of fluid.

[00104] Example 48. The spray tip of any of Examples 46 and 47, wherein the first body is positioned within the channel closer to the exit orifice than the second body such that the first body is positioned downstream of the second body; and the at least one flute of the first body is configured to cause a non-rotational flow of fluid in the channel to transition to a rotational flow of fluid.

[00105] Example 49. The spray tip of any of Examples 46 to 48, wherein an expanding portion of the exit orifice has a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction.

[00106] Example 50. The spray tip of any of Examples 46 to 49, wherein the channel of the housing is tapered from the proximal end to the distal end of the housing.

[00107] Example 51. The spray tip of any of Examples 46 to 50, wherein the exit orifice has a diameter than is less than a diameter of the channel of the housing.

[00108] Example 52. The spray tip of any of Examples 46 to 51, wherein the exit orifice is configured to discharge a rotational flow of fluid therefrom.

[00109] Example 53. The spray tip of any of Examples 46 to 52, wherein the exit orifice is configured to discharge a rotational flow of fluid therefrom in the form of a cone- shaped sheet of fluid.

[00110] Example 54. The spray tip of any of Examples 46 to 53, wherein the exit orifice expands as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the exit orifice defines a conical shape.

[00111] Example 55. The spray tip of any of Examples 46 to 54, wherein the exit orifice is configured to discharge a fluid therefrom in a spray pattern having a diameter of at least 1.1 inches at a distance of about 2 inches away from the distal end of the exit orifice in the distal direction and/or a spray pattern having a spray angle of at least 28°. [00112] Example 56. The spray tip of any of Examples 46 to 55, wherein the exit orifice is configured to discharge a fluid therefrom in a spray pattern having a diameter of from about 0.5 inches to about 4 inches at a distance of about 2 inches away from the distal end of the exit orifice in the distal direction and/or a spray pattern having a spray angle of from about 15° to about 120°.

[00113] Example 57. The spray tip of any of Examples 46 to 56, wherein the housing includes a distal end wall.

[00114] Example 58. The spray tip of Example 57, wherein the exit orifice extends into the distal end wall along a proximal direction and is open to and in fluid communication with the channel.

[00115] Example 59. The spray tip of Example 57, wherein the housing includes an outer wall extending from the distal end wall to the proximal end of the housing.

[00116] Example 60. The spray tip of Example 59, wherein the outer wall of the housing defines the channel therein.

[00117] Example 61. The spray tip of any of Examples 46 to 60, wherein a ratio of a length of the exit orifice to the cross-sectional dimension of the exit orifice at its distal end is about 2:1.

[00118] Example 62. A biomaterial delivery device, comprising: an applicator having a distal end portion and a flow channel extending therethrough; and the spray tip of any of Examples 46 to 61, the spray tip operatively connected to the distal end portion of the applicator such that the spray tip is in fluid communication with the flow channel of the applicator.

[00119] Example 63. The biomaterial delivery device of Example 62, wherein the spray tip housing includes a coupler configured to couple to the applicator.

[00120] Example 64. The biomaterial delivery device of Example 63, wherein the coupler includes a luer lock.

[00121] Example 65. The biomaterial delivery device of Example 63, wherein the coupler includes threads.

[00122] Example 66. A method of dispensing a fluid, comprising: directing a flow of the fluid into an inlet of a spray tip, the spray tip including first and second bodies positioned therein and spaced apart from one another along a longitudinal axis; receiving the flow of the fluid through at least one opening that extends through the second body and into a channel between the first and second bodies; receiving the flow of the fluid from the channel and though at least one flute of the first body such that the at least one flute causes the flow of the fluid to become a rotational flow of the fluid; and discharging the rotational flow of the fluid from an exit orifice of the spray tip.

[00123] Example 67. The method of Example 66, wherein: an expanding portion of the exit orifice has a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction; and the discharging step comprises causing the fluid to fan outwardly as the fluid is discharged from the exit orifice.

[00124] Example 68. The method of any of Examples 66 and 67, wherein the discharging step does not include the use of a pressurized gas.

[00125] Example 69. The method of any of Examples 66 to 68, wherein at least the discharging step occurs during a medical procedure.

[00126] Example 70. The method of any of Examples 66 to 69, wherein the flow of the fluid directed into the inlet of the spray tip is a laminar or turbulent flow of the fluid.

[00127] Example 71. The method of Example 70, wherein the second body causes the flow of the fluid to be output from the exit orifice as a turbulent flow of fluid when the flow of fluid received at the inlet is a non-turbulent flow of fluid.

[00128] Example 72. The method of Example 71, wherein the first body causes the turbulent flow of the fluid to become a turbulent and rotational flow of the fluid.

[00129] It should be noted that the illustrations and descriptions of the examples shown in the figures are for exemplary purposes only, and should not be construed limiting the disclosure. One skilled in the art will appreciate that the present disclosure contemplates various examples. Additionally, it should be understood that the concepts described above with the above-described examples may be employed alone or in combination with any of the other examples described above. It should further be appreciated that the various alternative examples described above with respect to one illustrated example can apply to all examples as described herein, unless otherwise indicated.

[00130] Unless explicitly stated otherwise, each numerical value and range should be interpreted as being approximate as if the word “about,” “approximately,” or “substantially” preceded the value or range. The terms “about,” “approximately,” and “substantially” can be understood as describing a range that is within 15 percent of a specified value unless otherwise stated.

[00131] Conditional language used herein, such as, among others, “can,” “could,” “might,” “may,” “e.g.,” and the like, unless specifically stated otherwise, or otherwise understood within the context as used, is generally intended to convey that certain examples include, while other examples do not include, certain features, elements, and/or steps. Thus, such conditional language is not generally intended to imply that features, elements, and/or steps are in any way required for one or more examples or that one or more examples necessarily include these features, elements and/or steps. The terms “comprising,” “including,” “having,” and the like are synonymous and are used inclusively, in an open-ended fashion, and do not exclude additional elements, features, acts, operations, and so forth.

[00132] While certain examples have been described, these examples have been presented by way of example only and are not intended to limit the scope of the inventions disclosed herein. Thus, nothing in the foregoing description is intended to imply that any particular feature, characteristic, step, module, or block is necessary or indispensable. Indeed, the novel methods and systems described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions, and changes in the form of the methods and systems described herein may be made without departing from the spirit of the inventions disclosed herein. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of certain of the inventions disclosed herein.

[00133] It should be understood that the steps of the exemplary methods set forth herein are not necessarily required to be performed in the order described, and the order of the steps of such methods should be understood to be merely exemplary. Likewise, additional steps may be included in such methods, and certain steps may be omitted or combined, in methods consistent with various examples of the present invention.

[00134] Although the elements in the following method claims, if any, are recited in a particular sequence with corresponding labeling, unless the claim recitations otherwise imply a particular sequence for implementing some or all of those elements, those elements are not necessarily intended to be limited to being implemented in that particular sequence.

[00135] It will be understood that reference herein to “a” or “one” to describe a feature such as a component or step does not foreclose additional features or multiples of the feature. For instance, reference to a device having or defining “one” of a feature does not preclude the device from having or defining more than one of the feature, as long as the device has or defines at least one of the feature. Similarly, reference herein to “one of’ a plurality of features does not foreclose the invention from including two or more, up to all, of the features. For instance, reference to a device having or defining “one of a X and Y” does not foreclose the device from having both the X and Y.

Claims

What is Claimed:

1. An insert of a spray tip that is configured to spray a fluid, the insert comprising: a first body including a proximal end and a distal end offset from one another along a longitudinal axis, an outer surface that extends between the proximal and distal ends, and at least one flute extending into the outer surface and from the proximal end to the distal end of the first body; and a second body including a proximal face and a distal face offset from one another along the longitudinal axis, an outer surface that extends between the proximal and distal faces, and at least one opening extending from the proximal face to the distal face of the second body, the second body spaced apart from the first body along the longitudinal axis such that a channel is defined between the distal face of the second body and the proximal end of the first body.

2. The insert of claim 1, wherein the at least one opening of the second body is not aligned with the at least one flute of the first body.

3. The insert of any of the preceding claims, wherein the at least one flute is defined by a first inner surface extending inwardly from the outer surface of the first body and an adjacent second inner surface extending inwardly from the outer surface of the first body, the first and second inner surfaces spaced apart from one another about a select rotational direction.

4. The insert of claim 3, wherein the first inner surface is angled with respect to the second inner surface such that the at least one flute decreases in width as the at least one flute extends inward from the outer surface.

5. The insert of claim 3, wherein the second inner surface includes an arcuate end portion extending therefrom, the arcuate end portion of the second inner surface curved in the select rotational direction.

6. The insert of claim 5, wherein the at least one flute has a dimension of from about 0.013 inches to about 0.017 inches as measured between the first inner surface and the second inner surface proximate the arcuate end portion of the second inner surface.

7. The insert of any of the preceding claims, wherein the first body further includes a central recess extending into the distal end along the longitudinal axis, the central recess positioned inwardly with respect to the outer surface of the first body such that the at least one flute is open to and in fluid communication with the central recess.

8. The insert of any of the preceding claims, wherein the first body further includes a plurality of dividing lands offset from one another about a select rotational direction, each of the plurality of dividing lands at least partially defining the distal end of the first body.

9. The insert of claim 8, wherein each of the plurality of dividing lands includes a first inner surface extending inwardly from the outer surface of the first body and a second inner surface extending inwardly from the outer surface of the first body, the first and second inner surfaces spaced apart from one another about the select rotational direction and meeting inwardly of the outer surface of the first body.

10. The insert of claim 8, wherein the at least one flute is defined between adjacent ones of the plurality of dividing lands.

11. A spray tip, comprising: a tubular housing having a proximal end and a distal end offset from one another along the longitudinal axis, the proximal end defining an inlet, the distal end defining an exit orifice, and the housing defining a housing channel that extends from the inlet to the exit orifice, the inlet and exit orifice each in fluid communication with the housing channel; and the insert of any of the preceding claims positioned within the housing channel between the inlet and the exit orifice.

12. The spray tip of claim 11, wherein the inlet is configured to receive flow of fluid therethrough and the at least one opening of the second body is configured to cause the flow of fluid to be output from the exit orifice as a turbulent flow of fluid when the flow of fluid received at the inlet is a non-turbulent flow of fluid.

13. The spray tip of claim 11, wherein: the first body is positioned within the housing channel closer to the exit orifice than the second body such that the first body is positioned downstream of the second body; and the at least one flute of the first body is configured to cause a non-rotational flow of fluid in the housing channel to transition to a rotational flow of fluid.

14. The spray tip of any of claims 11 to 13, wherein an expanding portion of the exit orifice has a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction.

15. A biomaterial delivery device, comprising: an applicator having a distal end portion and a flow channel extending therethrough; and the spray tip of any of claims 11 to 12, the spray tip operatively connected to the distal end portion of the applicator such that the spray tip is in fluid communication with the flow channel of the applicator.

16. The biomaterial delivery device of claim 15, wherein the spray tip housing includes a coupler configured to couple to the applicator.

17. A spray tip, comprising: a tubular housing having a proximal end and a distal end offset from one another along a longitudinal axis, the proximal end defining an inlet, the distal end defining an exit orifice, and the housing defining a housing channel that extends from the inlet to the exit orifice, the inlet and exit orifice each in fluid communication with the housing channel, and an expanding portion of the exit orifice having a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction; and a body positioned within the housing channel between the inlet and the exit orifice, the body including a proximal end, a distal end offset from the body proximal end along the longitudinal axis, and an outer surface that extends between the body proximal end and the body distal end, and at least one flute that extends into the outer surface and extends from the body proximal end to the body distal end.

18. The spray tip of claim 17, wherein the exit orifice includes a lead-in portion that is tapered inwardly as the lead-in portion extends along the distal direction.

19. The spray tip of claim 18, wherein a ratio of a length of the exit orifice to the cross- sectional dimension of the exit orifice where the lead-in portion meets the expanding portion is from about 1.5:1 to about 2.2:1.

20. A method of dispensing a fluid, comprising: directing a flow of the fluid into an inlet of a spray tip, the spray tip including first and second bodies positioned therein and spaced apart from one another along a longitudinal axis; receiving the flow of the fluid through at least one opening that extends through the second body and into a channel between the first and second bodies; receiving the flow of the fluid from the channel and though at least one flute of the first body such that the at least one flute causes the flow of the fluid to transition to a rotational flow of the fluid; and discharging the rotational flow of the fluid from an exit orifice of the spray tip.

21. The method of claim 20, wherein: an expanding portion of the exit orifice has a cross-sectional dimension, perpendicular to the longitudinal axis, that increases as the exit orifice extends along a distal direction that extends from the proximal end toward the distal end of the tubular housing such that the expanding portion of the exit orifice is tapered outwardly as the exit orifice extends along the distal direction; and the discharging step comprises causing the fluid to fan outwardly as the fluid is discharged from the exit orifice.

22. The method of any of claims 20 and 21, wherein the discharging step does not include the use of a pressurized gas.