Glass Syringe Dropper

Abstract

The present invention relates to a glass syringe dropper including a top plunger, a body made of glass, an inner cap, and an outer cap housing the inner cap, the body having a top end, a middle portion, and a bottom end, the top plunger being removably connected to the top end, the inner cap and the outer cap being removably connected to the bottom end, the top end and the bottom end being capable of being opened and closed with air tight and liquid tight features for dispensing control without breaking open the glass syringe dropper to access the interior of the glass syringe dropper.

Description

[Technical Field]

[0001] The present invention relates to a glass syringe dropper. [Background technology]

[0002] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.

[0003] Prior art document U.S. Patent No. 5,629,663 discloses a multi-dose glass cartridge for a homogeneous liquid drug solution, which is used for medical purposes with a needle / medical needle syringe or a medical drug delivery system. The upper end of the multi-dose glass cartridge is closed and sealed with a rubber seal / aluminum cup. The lower end is closed with a rubber stopper / piston. The homogeneous liquid drug is filled inside the hollow inner glass cylinder of the cartridge body. This multi-dose glass cartridge must be used with a needle that can pierce the seal. Such a multi-dose glass cartridge of U.S. Patent No. 5,629,663 cannot be used for direct dermal administration. Furthermore, the multi-dose glass cartridge cannot be used as a dropper for controlled flow. In U.S. Patent No. 5,629,663, dose selection can be achieved solely by aspiration with a pierced medical needle syringe or a drug delivery system equipped with a needle. Furthermore, such a closed system cannot be opened or reused for multiple uses.

[0004] Another conventional glass container generally includes a cylindrical glass body. When a liquid is introduced into the glass container, the glass container is sealed by melting the material at a single point. When a user wishes to use the contents in the glass container, he / she must break the glass container by breaking a weak point to allow the contents to flow out of the container. Such "ampule-type" containers cannot stand upright and are difficult to handle when removed from their boxes.

[0005] For example, Patent Document 2 (Patent Document 2) discloses a glass receptacle including a cylindrical glass body. The cylindrical glass body has a long, thin neck on a first wall of the cylindrical glass body. The cylindrical glass body has a circular ring on a second wall opposite the first wall. The circular ring defines an opening and supports a seal for the opening. The long, thin neck is sealed by melting a working material. The glass receptacle is a two-piece tube system that is closed and finished by sealing with glass. The bottom end of the glass receptacle is closed with a rubber stopper / piston. This glass receptacle must be used with a needle, such as a medical needle syringe, that can pierce the seal on the back. The container made of glass in Patent Document 2 is a pharmaceutical storage container and cannot be used for direct dermal administration. The container does not have a nozzle design, and the glass tip must be broken if the container must be used without a needle or medical syringe. The glass receptacle cannot be used as a controlled flow dropper. Additionally, the closure system cannot be opened and reused for multiple uses; it is sealed specifically for use with a needle.

[0006] Generally, prior art glass ampoules have sealed ends. Users must break the glass tip of the glass ampoules to access the product. When an ampoule containing a drug or the like is used, a shallow scratch is made on the neck of the ampoule, and the elongated portion of the ampoule is then separated from its body by the applied force, and the elongated portion can no longer be reattached to the body. Therefore, such prior art glass ampoules cannot be used multiple times.

[0007] Another conventional glass container allows the user to break the single neck of the glass container by breaking the laminar seal with a wedge-shaped element. Alternatively, the seal on the second base may be of a type that can be ruptured using a syringe needle, allowing the container to be used to store a liquid for injection and for the liquid to be transferred to a syringe without having to cut the glass neck. The container may be disposed on the second base in an upright position.

[0008] For example, prior art document U.S. Patent No. 5,949,623 discloses a glass ampoule for holding a drug, calibration liquid, or quality control liquid. The bottom of the glass ampoule is flat or concave toward the interior of the ampoule, and the bottom area is shaped and / or coated to provide a predetermined breaking site, thereby allowing it to be mechanically broken using a slight force. The glass ampoule of U.S. Patent No. 5,949,623 must be broken upon use. The glass ampoule cannot be used as a controlled flow dropper. Furthermore, the glass ampoule cannot be opened or reused for multiple uses.

[0009] Furthermore, Patent Document 4 discloses an ampoule package in which an elongated portion of the ampoule is wrapped with a heat-shrinkable film. At least the lower portion of the constriction of the ampoule is covered with the heat-shrinkable film. Specifically, the ampoule package of Patent Document 4 includes an ampoule having a body, an elongated portion attached to the body, and a constriction between the elongated portion and the body, at which the elongated portion is separable but integrally attached to the body. The ampoule is narrowed in cross section at and adjacent to the constriction, and a heat-shrinkable film is shrink-wrapped around the constriction, around at least a portion of the elongated portion, and around a region of the body and a region of the elongated portion adjacent to the constriction so that the film conforms to the ampoule as a whole when shrink-wrapped around the ampoule. The ampoule package is cut during use. Therefore, the ampoule package of Patent Document 4 must be broken during use. The ampoule package cannot be used as a controlled flow dropper. The ampoule package cannot be opened for multiple uses and cannot be reused.

[0010] Prior art glass containers cannot be used for direct dermal administration. Prior art glass containers cannot be used as controlled flow droppers. Traditional closure systems cannot be opened and reused for multiple uses. Traditional glass containers must be pierced or broken by a needle. [Prior art documents] [Patent documents]

[0011] [Patent Document 1] International Publication No. 2011 / 114344(A1) [Patent Document 2] International Publication No. 2008 / 065221(A1) [Patent Document 3] U.S. Patent No. 5,948,366(A) [Patent Document 4] U.S. Patent No. 4,826,025(A) Summary of the Invention [Problem to be solved by the invention]

[0012] In view of the shortcomings of the prior art, there is a need for a novel glass syringe dropper with controlled flow that has a closed dispensing system for multiple uses without the need to break the container. [Means for solving the problem]

[0013] The present invention provides a glass syringe dropper for skin care and scalp care applications, providing the benefits of glass protection for formulas, such as ampoules or vials.

[0014] The body of the glass syringe dropper can be a glass tube. Both ends of the glass tube are open, so that the glass tip does not need to be broken to access the interior of the glass syringe dropper. One end can be a screw cap neck that fits into a dispensing actuator system, and the other side is a snap-on neck for easy removal and application of a press-fit cap. No medical needle syringe needs to be inserted to extract the product. The product is dispensed in a controlled manner by an actuator that uses a plunger design.

[0015] An apply head may be provided in one end. Two caps may be provided on the two ends of the glass syringe dropper. The apply head has a tip that may be preferably made of glass. The tip may have a very small orifice and a very long travel orifice for controlled flow of very low viscosity serums, oils, or cosmetic fluids, made by using tubing glass technology and nozzle modification customized tooling.

[0016] In some embodiments, a bi-injected inner cap, which may be a snap cap, has a bending arm and a soft tip to assist in closing the glass syringe. The bending arm may be made of a thermoplastic resin, preferably PP (polypropylene), and the soft tip may be made of TPE / TPR (thermoplastic elastomer / thermoplastic rubber). A snap bead ring may be provided on the glass tube. A small orifice is provided to provide an airtight closure that can be opened and closed multiple times. Alternatively, the snap bead ring on the glass may be designed with a thread design to cooperate with a cap closure system. In some embodiments, the top end of the glass syringe may have a screw cap closure for exchange closure or a plunger system to assist in drop-by-drop flow control.

[0017] With the inventive design, which has a wide opening at the top and a narrow outlet at the bottom, there is no need to insert a medical needle syringe to extract the product. The product is dispensed in a controlled manner by an actuator using a plunger design. Compared to conventional glass ampoules with breaking tips that would have sharp glass edges after breaking, the glass syringe dropper of the present invention can be made with a rounded tip so that it can be used directly for skin contact.

[0018] One object of the present invention is to provide a glass syringe dropper having a one-piece body design with a controlled flow orifice.

[0019] Another object of the present invention is that the dropper allows for a closed dispensing system due to its two open-ended design.

[0020] These objects are achieved by the glass syringe dropper according to the present invention.

[0021] In accordance with a preferred embodiment of the present invention, a glass syringe dropper includes a top plunger, a body made of glass, an inner cap, and an outer cap containing the inner cap, the body having a top end, a middle portion, and a bottom end, the top plunger being removably connected to the top end, the inner cap and the outer cap being removably connected to the bottom end, the top end and the bottom end being capable of being opened and closed with airtight and liquidtight features for controlled dispensing without breaking open the glass syringe dropper to access the interior of the glass syringe dropper.

[0022] According to a preferred embodiment of the present invention, the inner cap includes an upper portion and a lower portion, and the lower portion includes a plurality of ribs for increasing the frictional force between the inner cap and the outer cap, and a hole for releasing air pressure during locking.

[0023] According to a preferred embodiment of the present invention, the upper portion includes a plurality of bending arms and a plurality of fixing arms, the bending arms and the fixing arms being arranged alternately with each other, the bending arms being flexible and designed to snap the inner cap onto the lower end of the body, and the fixing arms cooperating to hold the inner cap together with the outer cap to prevent them from separating.

[0024] According to a preferred embodiment of the present invention, the lower end has an orifice with a small diameter and a long length.

[0025] According to a preferred embodiment of the present invention, the ratio of the length of the orifice to the diameter of the orifice is 4.3 or greater.

[0026] According to a preferred embodiment of the present invention, the diameter of the orifice is in the range of 1 mm to 1.6 mm and the length of the orifice is in the range of 7 mm to 20 mm.

[0027] According to a preferred embodiment of the invention, inside the inner cap there is an orifice sealing pin and a tube guide sealing ring which extends around the orifice sealing pin and guides the lower end of the body into position during assembly, the orifice sealing pin is used to seal the orifice, and the tube guide sealing ring provides a secondary seal on the outside of the lower end, the orifice sealing pin and the tube guide sealing ring being made integrally.

[0028] According to a preferred embodiment of the present invention, the lower end portion includes an upper section, a central section, and a lower section, the upper section being cylindrical, the central section being a snap bead ring whose outer diameter is larger than that of the upper section, the bent arms snapping the inner cap onto the central section, and the lower section being a frustum whose outer diameter gradually decreases in a direction from the top to the bottom.

[0029] According to a preferred embodiment of the present invention, there is a funnel-shaped portion inside the upper and central sections, the inner diameter of which decreases downward along the inner surface, the inner surface having an upper portion with a constant inner diameter, a central portion that is arcuate and concave with respect to the axis of the funnel-shaped portion, and a lower portion that is arcuate and convex with respect to the axis.

[0030] According to a preferred embodiment of the present invention, the inner diameter of the inner surface is in the range of 6 mm to 8 mm, and at the intersection of the middle and lower portions, the inner diameter of the inner surface is in the range of 4 mm to 6 mm.

[0031] In accordance with a preferred embodiment of the present invention, the top end is a threaded neck having external threads that mate with the internal threads of the top plunger, and the top end and body are made integrally from glass.

[0032] According to a preferred embodiment of the present invention, the top plunger includes a plunger button, a collar, and a top cap, the collar having a disk portion and a neck portion, the disk portion having an outer diameter larger than that of the top cap, the collar and the top cap being fixed together as a retaining portion of the top plunger, the collar having an opening through which the plunger button is inserted, and the top cap having a hollow cavity communicating with the opening, the cavity for containing a rubber bulb, and an O-ring for sealing.

[0033] In accordance with a preferred embodiment of the present invention, the plunger button is made from a thermoplastic material, the collar is made from a thermoplastic material, the top cap is made from a thermoplastic material, and the O-ring is made from a thermoplastic material.

[0034] According to a preferred embodiment of the present invention, the distance between the lower edge of the plunger button and the upper edge of the collar defines the stroke length, the internal volume of the rubber bulb defines the stroke volume, and the edge of the tip of the lower end is rounded so that it can be used for direct skin contact.

[0035] According to a preferred embodiment of the present invention, the inner cap is made of a thermoplastic material and the outer cap is made of a thermoplastic material or made of a metal or alloy material.

[0036] Further areas of applicability will become apparent from the description provided herein. It should be understood that the description and specific examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure.

[0037] The drawings described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure in any way. [Brief explanation of the drawings]

[0038] [Figure 1]FIG. 1 is a perspective view of an exemplary glass syringe dropper according to the present invention. [Figure 2] FIG. 1 is a perspective view of an exemplary glass syringe dropper according to the present invention, with the body connected to the top plunger and outer cap. [Figure 3] FIG. 1 is a perspective view of an exemplary glass syringe dropper according to the present invention with the outer cap removed. [Figure 4] FIG. 1 is a perspective view of an exemplary glass syringe dropper according to the present invention with the top plunger removed. [Figure 5] FIG. 1 is a front view of the body of an exemplary glass syringe dropper according to the present invention. [Figure 6] FIG. 2 is a partial view of the lower end of the body of an exemplary glass syringe dropper according to the present invention. [Figure 7] FIG. 2 is a cross-sectional view of the bottom end of the body of an exemplary glass syringe dropper according to the present invention. [Figure 8] FIG. 2 is a cross-sectional view of the bottom end of the body of an exemplary glass syringe dropper according to the present invention. [Figure 9] FIG. 1 is a diagrammatic view of the body of an exemplary glass syringe dropper according to the present invention. [Figure 10] FIG. 1 is a diagrammatic view of the body of an exemplary glass syringe dropper according to the present invention. [Figure 11] FIG. 1 is a cross-sectional view of the body of an exemplary glass syringe dropper according to the present invention. [Figure 12] FIG. 1 is an exploded view of an exemplary glass syringe dropper according to the present invention. [Figure 13] FIG. 1 is an exploded view of an exemplary glass syringe dropper according to the present invention. [Figure 14] FIG. 1 is a perspective view of the top plunger of an exemplary glass syringe dropper according to the present invention. [Figure 15] 1A-1C are stroke diagrams of an exemplary glass syringe dropper according to the present invention. [Figure 16] FIG. 2 is a cross-sectional view of the nozzle and cap of an exemplary glass syringe dropper according to the present invention. [Figure 17]FIG. 1 is a perspective view of an inner cap of an exemplary glass syringe dropper according to the present invention. [Figure 18] 1A-1C are diagrams of an inner cap of an exemplary glass syringe dropper according to the present invention. [Figure 19] 1A-1C are diagrams of the inner and outer caps of an exemplary glass syringe dropper according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0039] The following description is merely exemplary in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0040] An all-glass syringe dropper for skin care and scalp care applications is shown in Figures 1-3. The glass syringe dropper has a body that can be made of glass. The body of the glass syringe dropper is hollow to contain fluids such as water, serums, oils, and cosmetic fluids. The body of the glass syringe dropper can be a one-piece glass design. For example, the body can be a glass tube. Both ends of the glass tube are open, so that the user does not need to break the glass tip.

[0041] In a preferred embodiment, the glass syringe dropper includes a top plunger 1, a body 2, an inner cap (shown in FIGS. 12 and 19), and an outer cap 3. For example, the body 2 is made of glass. FIGS. 1-3 show several states of the glass syringe dropper. The left parts of FIGS. 1 and 2 show that the body 2 is connected to the top plunger 1 and covered by the outer cap 3 (the inner cap is contained within the outer cap 3). The center parts of FIG. 1 and 3 show that the body 2 is connected to the top plunger 1 and the outer cap 3 has been removed, and the inner cap is contained within the outer cap 3 so that the inner cap can be removed together with the outer cap 3. The right part of FIG. 1 shows that after the outer cap is removed, the button on the top plunger is pressed and a drop is released.

[0042] As shown in Figure 1, when the glass syringe dropper is in use after removal of the outer cap, the button on the top plunger of the glass syringe dropper is pressed and a dose is dispensed, which can be applied directly to human skin. When the glass syringe dropper is not in use, the button is not pressed and the glass syringe dropper is covered and sealed by the outer cap containing the inner cap for sale, storage, transportation, etc.

[0043] 4 shows another state of the glass syringe dropper in which the top plunger 1 has been removed, such as by unscrewing it, while the body 2 is still covered by the outer cap 3. In this state, the glass syringe dropper can be opened at one end and refilled or recharged for multiple uses. The top plunger 1 can be screwed back on the glass syringe dropper for the next use.

[0044] FIG. 5 shows the body of an exemplary glass syringe dropper according to the present invention. In this embodiment, body 2 is made entirely of glass and includes top end 21, center portion 22, and bottom end 23. Top end 21 of body 2 can be a neck, preferably a threaded neck whose external threads are used for a screw closure fit, which is compatible with a dispensing actuator system. The dispensing actuator system can be a top plunger, such as top plunger 1 shown in FIGS. 1-2 and 4. The top plunger has internal threads that mate with the external threads of the threaded neck. The dispensing actuator system can be connected to the body by other suitable methods, such as mechanical fitting, snap-fit, and adhesive. In a preferred embodiment, top end 21 can be part of body 2 or can be integral with body 2. For example, top end 21 and body 2 are integrally made of glass. In a preferred embodiment, bottom end 23 and body 2 are integrally made of glass. In a preferred embodiment, top end 21, body 2, and bottom end 23 are integrally made of glass.

[0045] FIG. 6 shows the lower end of the body in detail. The lower end 23 of the body can be used as a nozzle. In a preferred embodiment, the lower end 23 includes an upper section 231, a central section 232, and a lower section 233. In this embodiment, the upper section 231 is cylindrical. The central section 232 is a snap bead ring, and its outer diameter is larger than that of the upper section 231. The lower section 233 is a frustum whose outer diameter gradually decreases from the top to the bottom. In this design, the central section 232 has an external function as a snap bead that externally fits a press-fit cap. The cap can be fixedly connected to the lower end 23, for example, by press fitting, interference fit, or mechanical fitting. As an alternative closure system, the central section of the lower end of the body can be designed with a thread design to cooperate with the threads of a cap closure system, and the central section has a screw neck design for capping function.

[0046] FIG. 7 is a cross-sectional view of the lower end of the body of a preferred embodiment of the present invention, showing the lower end in detail. The interior of the lower end is hollow. As shown in this embodiment, the hollow is a hollow funnel design within the upper and central sections 231 and 232, as circled in FIG. 7. That is, the upper and central sections 231 and 232 have a funnel shape, with the inner diameter decreasing downward along the inner surface. As shown in the cross-sectional view of FIG. 7, the inner surface has an upper section 234 with a constant inner diameter. The inner surface has a central section 235 that is substantially arc-shaped and concave with respect to axis A, and a lower section 236 that is substantially arc-shaped and convex with respect to axis A. The concave arc-shaped inner surface and the convex arc-shaped inner surface form an "S." An orifice 237 extends from the terminal end of the lower section 236.

[0047] 8 is a cross-sectional view of the lower end of the body of a preferred embodiment of the present invention, showing the dimensions of each part. As shown in the embodiment of FIG. 8, the inner diameter D of the upper part 234 is 234 is in the range of 6 mm to 8 mm, or preferably in the range of 6.45 mm to 7.51 mm, or preferably 6.98 mm. At the intersection I of the central portion 235 and the lower portion 236, i.e., the midpoint of the "S", the horizontal cross section is a circle, and the inner diameter D of the circle is235 The diameter D of the orifice 237 is in the range of 4 mm to 6 mm, or preferably in the range of 4.61 mm to 5.63 mm, or preferably 5.12 mm. As shown in FIG. 8, the orifice 237 has a very small diameter. 237 Preferably, the orifice has a length L of 1 mm to 1.60 mm, or preferably 1.20 mm to 1.55 mm, or preferably 1.40 mm, with a tolerance of + / - 0.30 mm. The orifice also has a long length. 237 is preferably in the range of 7 mm to 20 mm, or preferably in the range of 9.05 mm to 14.95 mm, or preferably 11.45 mm. The extremely small diameter D of the orifice 237 237 and the long length L of the orifice 237 237 The orifice 237 has a diameter D of 6.98 mm down to 5.12 mm, creating a restricted flow. 237 Length L of orifice 237 237 The ratio of LD is the L 237 / D 237 In a preferred embodiment, the LD ratio of the orifice 237 is 4.3 or greater, or preferably 4.375 or greater. A large LD ratio leads to good drip control and good airtightness. With such an LD ratio, the present invention can achieve an airtight fit with the cap system to prevent any leakage under extreme conditions of vacuum pressure and temperature changes. For example, a glass syringe dropper according to the present invention can stabilize drip control for more than one minute with a fluid product (e.g., water) once the cap is opened.

[0048] In a preferred embodiment, the central section 232 (i.e., the snap bead ring) has a maximum outer diameter De within the range of 11 mm to 14 mm, or preferably within the range of 11.90 mm to 12.85 mm, or preferably 12.60 mm, with a tolerance range of + / - 0.30 mm. 232 In the cross-sectional view of Figure 8, the edge of the central section 232 (i.e., the snap bead ring) is preferably arcuate, with a radius R 232 is in the range of 1.5mm to 1.8mm, or preferably in the range of 1.57mm to 1.69mm, or preferably 1.63mm, with a tolerance range of + / - 0.30mm.

[0049] 9 is a diagram of the body of an exemplary glass syringe dropper according to the present invention. In a preferred embodiment, the overall height H2 of the body 2 is within the range of 100 mm to 120 mm, or preferably within the range of 107.40 mm to 116.20 mm, or preferably 113.20 mm, with a tolerance range of + / - 1.50 mm. The outer diameter De of the central portion 22 of the body 2 is 22 is within the range of 16 mm to 18 mm, or preferably within the range of 16.60 mm to 17.40 mm, or preferably 17 mm, with a tolerance range of + / - 0.50 mm. As previously mentioned, the central section 232 (i.e., the snap bead ring) has a maximum outer diameter De at its largest cross section. 232 The height H from the maximum cross section of the central section 232, for example, the central cross section of the central section 232, to the end of the lower end 23 (for example, the tip of the nozzle) 23 is in the range of 11 mm to 14 mm, or preferably in the range of 12.30 mm to 13.66 mm, or preferably 12.98 mm. In a preferred embodiment, the pack size of the glass syringe dropper can be varied overall by up to 35% for different cosmetic product sizes. That is, the overall glass syringe dropper size can be varied for different products, and the size can be increased by up to 135% and reduced by up to 65% of the original size of the glass syringe dropper.

[0050] 10 is a diagram of the body of an exemplary glass syringe dropper according to the present invention. In a preferred embodiment, the height H of the upper end 21 of the body 2 21 is in the range of 7 mm to 9.50 mm, or preferably in the range of 7.96 mm to 9.10 mm, or preferably 8.53 mm, with a tolerance range of + / - 0.35 mm. The distance S between the top 211 of the upper end 21 and the uppermost edge 212 of the thread is in the range of 0.50 mm to 1.50 mm, or preferably in the range of 0.75 mm to 1.25 mm, or preferably 1 mm. The edge of the top 211 of the upper end 21 is circular and has a radius R in the range of 0.10 mm to 0.45 mm, or preferably in the range of 0.20 mm to 0.35 mm, or preferably 0.30 mm. 211 The bottom 213 of the upper end 21 is circular and has a radius R in the range of 0.50 mm to 1.50 mm, or preferably in the range of 0.75 mm to 1.25 mm, or preferably 1 mm. 213 It has.

[0051] In a preferred embodiment, the upper edge 221 of the central portion 22 of the body 2 is circular and has a radius R in the range of 0.2 mm to 0.7 mm, or preferably in the range of 0.35 mm to 0.60 mm, or preferably 0.50 mm. 221 The lower edge 222 of the central portion 22 of the body 2 is circular and has a radius R in the range of 1 mm to 2 mm, or preferably in the range of 1.25 mm to 1.75 mm, or preferably 1.50 mm. 222 It has.

[0052] In a preferred embodiment, the height H of the lower end 23 of the body 2 23 The outer diameter De of the upper section 231 of the lower end 23 is in the range of 16 mm to 19 mm, or preferably in the range of 17 mm to 18 mm, or preferably 17.50 mm. 231is in the range of 9 mm to 12 mm, or preferably in the range of 10 mm to 11.20 mm, or preferably 10.60 mm. The distance between the lower edge 222 of the central portion 22 and the upper edge 238 of the central section 232 is in the range of 2.5 mm to 3.5 mm, or preferably in the range of 2.75 mm to 3.25 mm, or preferably 3 mm. In other words, the height H of the upper section 231 of the lower end 23 231 is in the range of 2.5 mm to 3.5 mm, or preferably in the range of 2.75 mm to 3.25 mm, or preferably 3 mm. The lowest part 239 of the lower end 23, e.g., the tip of the nozzle, is circular and has a radius R in the range of 0.5 mm to 1.5 mm, or preferably in the range of 0.75 mm to 1.25 mm, or preferably 1 mm. 239 Because the lowest portion 239 (e.g., the tip of the nozzle) of the lower end 23 is round and has no sharp edges, the glass syringe dropper can be used for direct skin contact, compared to prior art glass ampoules.

[0053] 11 is a cross-sectional view of the body of an exemplary glass syringe dropper according to the present invention. In a preferred embodiment, the height H of the central portion 22 of the body 2 is 22 is in the range of 70 mm to 90 mm, or preferably in the range of 79 mm to 87 mm, or preferably 84.26 mm. 22 is in the range of 1.00mm to 1.20mm, or preferably in the range of 1.05mm to 1.15mm, or preferably 1.10mm, with a tolerance range of + / - 0.10mm.

[0054] In a preferred embodiment, the maximum outer diameter Des of the upper end 21, i.e., the maximum outer diameter Des of the threads of the upper end 21, is in the range of 13 mm to 16 mm, or preferably in the range of 14 mm to 15 mm, or preferably 14.50 mm, with a tolerance range of + / - 0.30 mm. The outer diameter Deb of the body of the upper end 21 is in the range of 11 mm to 14 mm, or preferably in the range of 12 mm to 13 mm, or preferably 12.50 mm, with a tolerance range of + / - 0.30 mm. The inner diameter Db of the body of the upper end 21 (e.g., the diameter of the opening) is in the range of 9 mm to 10 mm, or preferably in the range of 9.25 mm to 9.75 mm, or preferably 9.50 mm, with a tolerance range of + / - 0.40 mm. The pitch of the threads P is in the range of 3 mm to 4 mm, or preferably in the range of 3.20 mm to 3.62 mm, or preferably 3.41 mm.

[0055] 12 is an exploded view of an exemplary glass syringe dropper according to the present invention. The glass syringe dropper may include, from top to bottom, a plunger button 11, a collar 12, a top cap 13, a rubber bulb 14, an O-ring 15, a body 2, an inner cap 4, and an outer cap 3. In a preferred embodiment, the collar 12 and the top cap 13 may be secured together as a retaining portion 16 of the top plunger 1, for example, by welding, bonding, threading, an interference fit, or the like. The resulting retaining portion 16 of the top plunger 1 is shown in FIG. 13. In a preferred embodiment, the collar 12 has a disk portion 121 and a neck portion 122, and the neck portion 122 of the collar 12 is inserted at one end into an opening in the top cap 13 and secured to form the retaining portion 16. The outer diameter of the disk portion 121 of the collar 12 is larger than the outer diameter of the top cap 13, allowing the user to easily hold the retaining portion 16 while depressing the plunger button 11 due to the larger disk portion. The collar 12 has an opening on the disk portion 121 and a passageway extending from the opening through the disk portion 121 and the neck portion 122. The plunger button 11 can be inserted through the opening and passageway. As shown in FIG. 14 , the plunger button 11, collar 12, and top cap 13 together form the top plunger 1. The top cap 13 is preferably cylindrical and has a hollow cavity communicating with the passageway and the opening. The cavity is intended to contain a rubber bulb 14, which is connected to the top end 21 of the body 2 at the open end of the bulb 14 in a suitable manner. In a preferred embodiment, an O-ring is used to seal the connection between the rubber bulb 14 and the top end 21 of the body 2. The rubber bulb 14 can also be removed for refilling.

[0056] In a preferred embodiment, the plunger button 11 is made of a thermoplastic resin material, preferably a PP (polypropylene) material, the collar 12 is made of a thermoplastic resin material, preferably a PP (polypropylene) material, the top cap 13 is made of a thermoplastic resin material, preferably a PP (polypropylene) material, the rubber bulb 14 is made of an NBR (nitrile butadiene rubber) material or a silicone rubber material, and the O-ring 15 is made as an O-ring liner made of a thermoplastic resin material, preferably a PE (polyethylene) material. In an alternative embodiment, the rubber bulb, preferably an NBR bulb, can be configured with a thicker or larger lower section that functions as an O-ring. The O-ring can then be removed; that is, the existing O-ring can be replaced with an NBR bulb having a lower section that also functions as an O-ring. The rubber bulb 14 is elastic and airtight on the body 2. During use, the plunger button 11 is pressed, causing the rubber bulb 14 to be crushed or compressed by the plunger button 11, thereby releasing air from the rubber bulb 14 and pushing the fluid contained within the body 2 downward. In a preferred embodiment, the rubber bulb 14 can be designed small enough to allow for the expulsion or release of air in a small volume, allowing for a controlled dose. A maximum volume of 0.37 ml (full stroke volume) can be expelled, which is preferably quite strong. The total pressure stroke dispenses a product drop of approximately 0.2 ml to 0.25 ml. As shown in FIG. 15, the distance between the bottom edge of the plunger button 11 and the top edge of the collar 12 is the stroke length S. L The internal volume of the rubber bulb 14 defines the stroke volume S V15 , the total length between the lower edge of the plunger button 11 and the upper edge of the collar 12 can be the maximum stroke length, i.e., the plunger button 11 is pressed to the extent that the lower edge of the plunger button 11 contacts the upper edge of the collar 12, which corresponds to the maximum stroke volume. During use, the plunger button 11 can be pressed over its entire length, or it can be pressed over a portion of its entire length. When the plunger button 11 is pressed, the rubber bulb 14 is crushed or compressed, and the fluid within the body 2 is released in the form of one or more droplets. In an alternative embodiment, the rubber bulb can be replaced with a bulb made of an elastic material.

[0057] 12, an O-ring is used to seal the body 2 of a glass syringe dropper, which may be in the form of a glass syringe tube. An inner cap 4 is placed within the outer cap 3 to cover the lower end (e.g., nozzle tip) of the body 2.

[0058] Figure 16 is a cross-sectional view of the bottom end and cap of an exemplary glass syringe dropper according to the present invention. Figure 16 shows the outline of the body (e.g., nozzle tip) and the hollow cavity and orifice 237 (e.g., narrow diameter orifice) of the body 2. The central section 232 (e.g., snap bead ring) of the bottom end 23 of the body 2 is snap-fit ​​with the bent arms 41 of the inner cap 4 for a snap-fit ​​closure. The inner cap 4 is contained within the outer cap 3.

[0059] In a preferred embodiment, the inner cap 4 has an orifice sealing pin 43 made of a soft material to plug the orifice and prevent leakage or outflow of the fluid in the dropper. The inner cap 4 may be made of a bi-injected material (e.g., an injected hard material and a soft material). A bi-injected material may be two plastic materials molded together in a continuous manner. The bent arm 41 of the inner cap 4 is snap-fit ​​with the central section 232, and the rigid arm of the inner cap 4 is fixed to the outer cap 3. In a preferred embodiment, the soft material is TPE (thermoplastic elastomer) or TPR (thermoplastic rubber).

[0060] FIG. 17 shows a perspective view of an exemplary glass syringe dropper inner cap according to the present invention. The inner cap 4 includes an upper portion 40 and a lower portion 50. The lower portion 50 includes multiple ribs to increase friction between the inner cap 4 and the outer cap 3. The upper portion 40 includes multiple bending arms 41 and multiple fixed arms 42. In a preferred embodiment, the bending arms 41 and fixed arms 42 are arranged alternately, i.e., bending arm, fixed arm, bending arm, fixed arm, etc. In other words, one bending arm is arranged between two fixed arms, and one fixed arm is arranged between two bending arms. The bending arms 41 are flexible and designed to bend slightly toward a central axis (not shown) to snap the inner cap 4 onto the central section 232 of the body 2. Such flexible bending arms can be used on highly resistant materials such as glass. In a preferred embodiment, the bending arms are made of an elastic material such as a TPE (thermoplastic elastomer) material and rubber. In another embodiment, the bending arms are made of a flexible material. In another embodiment, the bending arms 41 are made of a thermoplastic material. These bending arms 41 can operate with glass tolerances within + / - 0.50 mm. The bending arms 41 allow for downward removal and actuation forces, while at the same time preventing accidental and unintentional separation.

[0061] FIG. 17 shows a preferred embodiment of the inner cap, showing that four bending arms are sufficient at the lower diameter. In other embodiments, the number of bending arms can range from four to six to smoothly operate on a circular surface. The fixed arms 42 (rigid arms) cooperate to hold the inner cap 4 together with the outer cap 3, preventing them from separating when pulled to remove them from the main body. Such a design can be achieved using a material such as PP (polypropylene). The bending arms provide a strong hold across the central region of the lower end during unexpected angular forces on the cap, which helps increase the removal force in the event of unexpected, unintentional separation. In some embodiments, the fixed arms 42 can be higher than the bending arms 41.

[0062] 18 shows a preferred embodiment of the inner cap. There is a hole 51 on the surface of the lower part 50 of the inner cap 4. The hole 51 serves to release air pressure during the locking of the inner cap and the outer cap. Inside the inner cap 4 there is an orifice sealing pin 43 and a tube guide sealing ring 44. The tube guide sealing ring 44 extends around the orifice sealing pin 43. The orifice sealing pin 43 is preferably located at the center of the circle of the tube guide sealing ring 44.

[0063] The orifice sealing pin 43 is used to seal the orifice. The tube guide sealing ring 44 guides the glass object (e.g., the lower end of the body) into place during assembly or snap-fitting of the glass object, and it also provides a secondary seal on the outer surface of the tip of the lower end (e.g., the nozzle). The orifice sealing pin 43 and tube guide sealing ring 44 can be made integrally. As shown in the embodiment of FIG. 18, there is a base 45 that rests on the inner surface of the bottom of the lower part 50, and the orifice sealing pin 43 and tube guide sealing ring 44 extend upward from the base 45. They are made integrally, which can be made of a bi-injected soft material such as TPE (thermoplastic elastomer), TPU (thermoplastic polyurethane), and rubber. High resistance of the locking glass orifice is achieved by the bi-injected soft sealing material, such as TPE (thermoplastic elastomer), and the soft pin achieves a tight seal on the glass. The soft material is easily compressed and also serves to seal the glass with high resistance.

[0064] FIG. 19 shows the inner and outer caps of an exemplary glass syringe dropper according to the present invention. The fixed arms 42 of the inner cap 4 cooperate to lock with the outer cap 3. The inner cap 4 can be made of a thermoplastic resin material such as PP (polypropylene), PVC (polyvinyl chloride), and PS (polystyrene). The outer cap 3 can also be made of a metal or alloy material. The bent arm design is specially made to achieve easy capping for the snap bead on the glass tip. The bent arm design helps to hold the cap very tightly once closed, while at the same time helping the user to easily and successfully remove the cap.

[0065] These components of the glass syringe dropper of the present invention work together to create a highly controlled flow for extremely low viscosity and rheologically free-flowing liquids. The nozzle design is also created with external features for snapping the bead and externally fitting the press-fit cap. This design helps create good droplet breakage during dispensing. The glass syringe dropper is made with a rounded edge so that it can be used for direct skin contact, compared to glass ampoules with a breaking tip that result in sharp glass edges after breaking. Customized tooling can be performed on a glass necking machine to achieve this design on materials such as glass, achieving both such a narrow orifice diameter and a snap-fit ​​bead design. Using the present invention, an airtight fit with the cap system can be achieved to prevent any leakage under extreme conditions of vacuum pressure and temperature changes. Once the cap is opened, drip control can also be stabilized for more than one minute for fluid products such as water.

[0066] Embodiments of the present disclosure are described herein. This description is merely exemplary in nature, and thus, variations that do not depart from the gist of the disclosure are intended to be within the scope of the present disclosure. The figures are not necessarily to scale, and some features may be exaggerated or minimized to show details of particular components. Therefore, the specific structural and functional details disclosed herein should not be considered limiting, but merely a representative basis for teaching those skilled in the art how to variously use the present invention. Those skilled in the art will understand that various features shown and described with reference to any one of the figures may be combined with features shown in one or more other figures to produce embodiments not explicitly shown or described. The combinations of features shown in the figures result in representative embodiments for various applications. However, various combinations and modifications of features consistent with the teachings of the present disclosure may be desired for particular applications or implementations. [Explanation of symbols]

[0067] 1 Top Plunger 2 Main unit 3 Outer cap 4 Inner cap 11 Plunger button 12 colors 13 Upper cap 14 rubber balls 15 O-ring 16 (Plunger) retaining part 21 (Main body) upper end 22 (Main body) central part 23 Bottom end (of the body) 40 (inner cap) top 41 Bend arm (inner cap) 42 Fixed arm, rigid arm 43 Orifice sealing pin 44 Pipe guide sealing ring 45 Base (on the inner surface of the bottom of the lower part) 50 (inner cap) bottom 51 Hole (on the bottom surface of the inner cap) 121 (Color) Disc 122 (collar) neck 211 (top) 212 (of a thread) top edge 213 (top) bottom 221 (Central) Upper Edge 222 (Central) Lower Edge 231 (lower end) upper section 232 (Lower end) central section, snap bead ring 233 Lower section (lower end) 234 (inner surface of lower end) upper part 235 (the inner surface of the lower end) center 236 (inner surface of lower end) 237 Orifice 238 Upper edge (of the central area of ​​the lower end) 239 (lower end) lowest A-axis D 234 (Upper) Inner Diameter D 235 Inner diameter (of a circle in horizontal section) D 237 (orifice) diameter Db (top body) inner diameter De 22 Outer diameter (at the center of the body) De 231 Outside diameter (upper section of lower end) De 232 Maximum outer diameter (central section) De 234 (Upper) Inner Diameter De 235 Inner diameter (of the circle of the horizontal cross section at intersection I) Deb (outer diameter of upper body) Des Maximum outer diameter (of the thread on the top end) H2 (body) overall height H 21 Height (at top) H 22 Height (of the center part) H 23 Height (bottom) H 231 Height (top area of ​​bottom edge) I Intersection (between the center and bottom) L 237 (orifice) length P thread R 211 Radius (of the top edge of the top end) R 213 Radius (at the bottom of the top edge) R 221 Radius (of the upper edge of the central part) R 222 Radius (of the lower edge of the central section) R 232 Radius (of the edge of the central section) R 239 Radius (at the bottom of the lower edge) S: Distance (between the top of the top end and the top edge of the thread) S L Stroke Length S V Stroke Volume T22 Wall thickness (in the center of the body)

Claims

1. A glass syringe dropper, a top plunger; a body made of glass; An inner cap and an outer cap that houses the inner cap; Including, the body having a top end, a middle portion, and a bottom end, the top plunger being removably connected to the top end, the inner cap and the outer cap being removably connected to the bottom end; the top and bottom ends can be opened and closed using airtight and liquidtight features for dispensing control without breaking open the glass syringe dropper to access the interior of the glass syringe dropper; the inner cap is made of a bi-injected material, the bi-injected material being an injected hard material and an injected soft material; the inner cap includes an upper portion and a lower portion, the upper portion including a plurality of bending arms and a plurality of fixed arms, the plurality of fixed arms cooperating to hold the inner cap together with the outer cap so that they do not separate; and the plurality of fixed arms being rigid arms; the lower end has an orifice; 1. A glass syringe dropper comprising: an orifice sealing pin disposed inside the inner cap; the orifice sealing pin being inserted into the orifice so as to seal the orifice when the inner cap and the outer cap are connected to the lower end of the body; and the orifice sealing pin being formed from a soft material.

2. 2. The glass syringe dropper of claim 1, wherein the lower portion includes a plurality of ribs for increasing friction between the inner cap and the outer cap, and a hole for releasing air pressure during locking.

3. 3. The glass syringe dropper of claim 2, wherein the bent arms and the fixed arms are arranged alternately with one another, and the bent arms are flexible and designed to snap the inner cap onto the bottom end of the body.

4. A glass syringe dropper as described in claim 1, characterized in that the orifice has a small diameter and a long length.

5. 5. The glass syringe dropper of claim 4, wherein the ratio of the length of the orifice to the diameter of the orifice is 4.3 or greater.

6. 5. The glass syringe dropper of claim 4, wherein the diameter of the orifice is in the range of 1 mm to 1.6 mm and the length of the orifice is in the range of 7 mm to 20 mm.

7. 5. The glass syringe dropper of claim 4, wherein a tube guide sealing ring is located inside the inner cap, the tube guide sealing ring extending around the orifice sealing pin to guide the lower end of the body into position during assembly, the tube guide sealing ring providing a secondary seal on the outside of the lower end, and the orifice sealing pin and the tube guide sealing ring being made integrally.

8. 4. The glass syringe dropper of claim 3, wherein the lower end includes an upper section, a middle section, and a lower section, the upper section being cylindrical, the middle section being a snap bead ring having an outer diameter greater than the outer diameter of the upper section, the bent arms snapping the inner cap onto the middle section, and the lower section being a frustum having an outer diameter gradually decreasing in a direction from the top to the bottom.

9. 9. The glass syringe dropper of claim 8, wherein a funnel-shaped portion exists within the upper and central sections, the inner diameter of which decreases downwardly along the inner surface, the inner surface having an upper portion having a constant inner diameter, a central portion that is arcuate and concave with respect to an axis of the funnel-shaped portion, and a lower portion that is arcuate and convex with respect to the axis.

10. 10. The glass syringe dropper of claim 9, wherein the constant inner diameter of the upper portion is in the range of 6 mm to 8 mm, and at the intersection of the middle portion and the lower portion, the inner diameter of the inner surface is in the range of 4 mm to 6 mm.

11. 10. The glass syringe dropper of claim 1, wherein the top end is a threaded neck having external threads that mate with the internal threads of the top plunger, and the top end and the body are fabricated integrally from glass.

12. 2. The glass syringe dropper of claim 1, wherein the top plunger includes a plunger button, a collar, and a top cap, the collar having a disk portion and a neck portion, the disk portion having an outer diameter larger than an outer diameter of the top cap, the collar and the top cap being fastened together as a retaining portion for the top plunger, the collar having an opening through which the plunger button is inserted, and the top cap having a hollow cavity communicating with the opening, the cavity for containing a rubber bulb, and an O-ring for sealing.

13. 13. The glass syringe dropper of claim 12, wherein the plunger button is made of a thermoplastic material, the collar is made of a thermoplastic material, the top cap is made of a thermoplastic material, and the O-ring is made of a thermoplastic material.

14. 13. The glass syringe dropper of claim 12, wherein the distance between the lower edge of the plunger button and the upper edge of the collar defines a stroke length, the internal volume of the rubber bulb defines a stroke volume, and the edge of the tip of the lower end is rounded so that it can be used for direct skin contact.

15. 2. The glass syringe dropper of claim 1, wherein the inner cap is made of a thermoplastic resin material and the outer cap is made of a thermoplastic resin material or a metal or alloy material.

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