Patent Application
20200054843
Nasal delivery of pharmaceutical products can be useful both for treating diseases or disorders in the nasal passages themselves and for treating systemic and/or neurological disorders. It has been observed, however, that particle or droplet size has significant impact on absorption when administering drugs via the nose and the nasal epithelia. Smaller droplets have been shown to promote better absorption into the body.
On the other hand, droplets that are too large fail to be absorbed and undesirably find their way into the pulmonary region.
Traditional devices for delivering drugs to the nasal cavity include syringed nose drops, pump spray devices, swabs, and propellant metered dose inhalers (MDI). These traditional devices have not generally been able to achieve the particle sizes necessary to maximize efficacy while helping mitigate undesired pulmonary absorption. For example, both eye dropper type devices and simple spray devices typically present medicament into the nasal cavity in a stream. The result is that much of the medicament simply runs out of the patient's nose or down the throat, and only a small amount of the drug is absorbed, with even less of the drug reaching the desired area in the nasal cavity.
Thus, there is a need for improved drug delivery systems to administer a desired dosage to the nasal epithelia or a predetermined area such as the sphenopalatine ganglion (hereinafter, the “SPG”).
In one embodiment, the present invention relates to a medical device for intranasal delivery of a medicament. The medicament may be any type of medicament suitable for nasal administration and delivery in the form of a spray.
In other embodiments, the present invention ensures that a complete dosage of the medicament is delivered, especially to specific areas in the nasal cavity such as the rear of the nasal cavity where the SPG is located.
A nasal drug delivery device according to the present invention includes a pump that supplies a fluid or powder containing a drug to a spray nozzle. The spray nozzle is adapted to create a spray plume that has a particle size and distribution that increase the absorption of the drug at the desired site. In other embodiments, a powder is used instead of a fluid.
In another embodiment, the nozzle creates a vortex that may be used to coat the entire cavity with a fine mist of liquid or powder.
In yet other embodiments, the pressure supplied and the nozzle opening is adjustable to create a desired spray pattern or plume that may be concentrated towards a specific area.
In still another embodiment, the present invention provides a nozzle that imparts a circular or swirling motion to the medicament as it passes through the nozzle so as to accurately direct the medicament to a desired area. This may be accomplished by using one or more fins, spirals or grooves in the bore of the nozzle. In addition, one or more helical elongated members such as ribbon elements located in and extending around and along the bore may be used.
In yet a further embodiment, the present invention provides a reservoir to hold a liquid medicament, a pump connecting the reservoir to a spray port, and a swab having a passageway therein with an applicator at the distal end for applying a medicament to a desired area.
In further embodiments, the swab is anatomically contoured to target a specific location in the nasal cavity. A preferred targeted location is the SPG, which is relatively inaccessible as a result of being located below a region of epithelium in the posterior portion of the nasal cavity, inferior to and including the spheno-ethmoidal recess. As a result, the anatomical contouring may include three geometries. Up and back along the SPG, down and back along the SPG, and the middle of the SPG.
In yet other embodiments, the present invention is directed to delivery systems that administer single doses of one or more substances, for example a liquid, powder, or gel, to each nostril of a user. As used herein, the term “delivery system” is interchangeable with “delivery device” or “device.” The delivery systems of the present invention may deploy a pressurized container to hold and deliver a predetermined volume of substance to a particular destination with the administration, independent of the coordination of the user.
As used herein, the term “substance” includes but is not limited to one or more active-ingredient-containing substances wherein the active ingredient may be biologic agents such as a protein, peptide, vaccine, or an active pharmaceutical ingredient (“API”), for example a pharmaceutical drug such as a prescription drug, generic drug, or over-the-counter pharmaceutical, neutraceutical or homeopathic product. The substance may be in an aqueous, gel, powder, solution, emulsion, crystals or suspension form. As used herein, the term “substance” is interchangeable with the terms “drug,” “drug product,” “medication,” “liquid,” “biologic,” “active ingredient” or “API.” As used herein, an “active ingredient” or API is any component intended to furnish pharmacological activity or other direct effect in the diagnosis, cure, mitigation, treatment, or prevention of disease, or to affect the structure or any function of the body of humans or other animals. As used herein, the term “unit dosage form” is interchangeable with the terms “bottle,” “vial,” “unit-dose,” “dosage form,” “unit-dose vial,” “blister,” “dosage blister,” “ampule” or “container.”
In the drawings, which are not necessarily drawn to scale, like numerals may describe substantially similar components throughout the several views. Like numerals having different letter suffixes may represent different instances of substantially similar components. The drawings illustrate generally, by way of example, but not by way of limitation, a detailed description of certain embodiments discussed in the present document.
Detailed embodiments of the present invention are disclosed herein; however, it is to be understood that the disclosed embodiments are merely exemplary of the invention, which may be embodied in various forms. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a representative basis for teaching one skilled in the art to variously employ the present invention in virtually any appropriately detailed method, structure or system. Further, the terms and phrases used herein are not intended to be limiting, but rather to provide an understandable description of the invention.
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In use, the pressurized medicament is converted in the bore of the nozzle from a simple stream into a circular or swirling stream, which is positively projected toward the desired area for treatment.
Yet other embodiments include modifying the bore to include placing solid structures in the bore to alter the flow. Such shapes may include structures that form twisting, conical, spiral, nautilus, rain droplet shaped, hi-conical, disc-like, biconvex, biconvex patterns, spherical, and partially spherical with a trailing edge as well as other patterns.
In other embodiments, the present invention provides catheters, medical structures, medical surfaces, and cannulas that are stealth like, or curve stealth like and any combination therein. Inner or outer surfaces may have depressions or relief shapes to alter fluid flow over a surface, to facilitate laminar, vortex or other flow. The surfaces may be applied to valve or valve like structures, conduits, catheters, stents, blood vessels, lumens, artificial organ structures, drains, bypass, perfusion or other pumps, artificial heart or chambers, vessels, and attachments thereof.
Yet other embodiments include modifying the surface of the object to alter fluid flow over the surface of a medical object to be inserted into a fluid stream to facilitate laminar, vortex or other flow. To modify the fluid flow around the object, preconfigured shapes are placed around the object. Preferred shapes include, but are not limited to, placing solid structures such as tubes as well as other structures that form twisting, conical, spiral, nautilus, rain-droplet-shaped, bi-conical, disc-like, biconvex, and biconvex patterns, tube, partially spherical, partially spherical with trailing edge, and spermatozoic morphology patterns.
Altered shape or surface morphologies will alter fluid flow characteristics and velocity, surface friction and durability, wear, surface trauma, vessel trauma, implant stability, catheter oscillations, sensor artifact, eddy currents, wave reflection, red cell and other cell trauma/integrity, clotting characteristics, platelet adhesion activation, inflammatory mediator activation, and thrombogenicity and altered infectious risk.
The angle and mode of vessel insertion will alter flow characteristics. The interface between catheter and hub also will play a role in peri-catheter flow dynamics.
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Nozzle 506 may use the vortex spray nozzles described above. In addition, the retractable nozzle may extend straight out, off to a side, extend in a curved path or may expand out into a bulbous shape or other shapes which have an expanded surface area.
In other embodiments the pressure provides a force that causes the nozzle to articulate, oscillate or move in a predetermined pattern to bathe the entire nasal cavity. The nozzle may also be adapted to move in a predetermined pattern that results in applying medicament or a solution to a particular area in the nasal cavity.
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In other embodiments, the nozzles of the various disclosed embodiments may be configured to create a vortex of fluid, powder, or combination thereof. Creating a vortex permits a fluid, air or spray to entraining medicaments or other desired substances. The vortex also creates a precise flow that may be targeted with more precision to a desired location. As shown in the figures, one possible way to create a vortex is to include fins inside a nozzle.
In other embodiments, the present invention provides a novel medicament mixing system. The system includes preloaded dosages of individual medicaments that may be combined together to produce a desired compound. In one preferred embodiment, the dosages are held in individual containers or cartridges that are placed in a mixing chamber, opened, and then mixed. The mixture may then be dispensed.
System 1000 may be used as follows: Step 1: cartridges of multiple and/or varying capacities (widths) are dropped into the loading chamber of the mixing chamber; Step 2: the loading chamber cover is closed; Step 3: spring loaded loading chamber (with cartridges) is pressed down causing one or more knife edges 1010-1013 at the mixing chamber opening to cut the cartridges sealing the membranes and allowing medicament to fall into mixing tube or chamber 1004.
The spring loaded chamber is released, in turn, sealing the mixing chamber. System 1000 now resembles the same state as Step 2 but with medicament in the mixing chamber. System 1000 may then be agitated to achieve a desired mixture.
The mixing chamber can be incorporated into a syringe, oral dosing, breathing, nasal or other delivery system as determined by an administrator and/or medicament manufacturer. Accordingly, alternate embodiments including cartridges that may be placed in a rotating, spinning or moveable housing such as a cylinder. The cylindrical housing is rotated to load a selected cartridge, and then further rotated to bring the cartridge in a position to allow the contents to be dispensed into a mixing chamber. Once the desired mixture is obtained, the device is configured to allow the medicament to be dispensed.
Other embodiments concern providing a device that is adapted to load the cartridges serially or in a linear fashion at one end, activated and mixed by a plunger, and then deliver from an opposing outlet. In yet other embodiments, the chamber is configured to function like a Y-connector that receives a plurality of cartridges, which may be individually dispensed into a common mixing chamber prior to administering the medicament.
While the foregoing written description enables one of ordinary skill to make and use what is considered presently to be the best mode thereof, those of ordinary skill will understand and appreciate the existence of variations, combinations, and equivalents of the specific embodiment, method, and examples herein. The disclosure should therefore not be limited by the above described embodiments, methods, and examples, but by all embodiments and methods within the scope and spirit of the disclosure.
This application is a continuation of U.S. Ser. No. 15/181079 filed Jun. 13, 2016, which claims the benefit of U.S. Provisional Application No. 62/174165 filed Jun. 11, 2015 and herein incorporated by reference.
| Number | Date | Country | |
|---|---|---|---|
| 62174165 | Jun 2015 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15181079 | Jun 2016 | US |
| Child | 16663300 | US |
