JPH0716247A - Pressurized fluid distribution device - Google Patents

Abstract

PURPOSE: To provide a pressurized fluid distributor means using a precision fluid injector means that precisely injects fluid because of its inclusion of at least one sump chamber adapted to be filled at its port closed by a detachable cap. CONSTITUTION: A housing 12 defines with its right-hand part 16 a sump 22, which is adapted to be filled at its circular port 24 with desirable fluid or liquid. The port 24, which is closed by a detachable cap 26, is formed with a thread 27 for receiving the cap 26 such that the screw of the cap 26 thereon prevents the inflow of air into the sump 22 thus sealed off. The sump chamber 22 extends to a left-hand part 14 in the housing 12, which holds therein a plunger means, and communicates with a first check valve means 30 for the supply through a filtrating delivery channel 32 of compressed air used for distributing fluid in the sump 22. The channel 32 is connected to a second check valve means.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to pressurized fluid dispensing devices. More particularly, it relates to a pressurized fluid dispenser for use with precision controlled fluid injectors.

[0002]

2. Description of the Related Art Various fluid distribution pumps and sprayers have already been proposed. Keyes et al., U.S. Pat. No. 47008
No. 72 discloses a pump that dispenses fluid through a syringe fitted with a hollow cylinder. The cylinder is connected to the chamber by a normally closed first check valve. A fluid-filled hollow plunger reciprocates within the cylinder and is connected to the chamber by a normally closed second check valve. During the outer stroke of the piston, the fluid in the piston is sucked into the cylinder through the normally closed second check valve, and during the inner stroke of the plunger, the fluid enters the chamber through the normally closed check valve. Pushed out. At this time, the fluid in the chamber is kept at the pressure obtained by the pump operation of the plunger. The discharge pipe is provided from the lower part of the chamber to the syringe, and the normally closed pinch valve in the syringe can be manually operated to eject the pressurized fluid from the syringe.

US Pat. No. 4,537,334 to Spengler et al. Discloses a reinforced plastic bottle or reservoir with a relatively large neck, having a sawtooth screw and a bevel rim on the neck for threaded engagement with a cap body. . The cap body includes a plastic cap substrate having an integral handle and a nozzle connecting portion, a plastic manual air pump, a plastic siphon, a valve and a spray nozzle member, and a lever for operating the valve. The air pump is supported by an integral flange, and has a disc type check valve at the bottom thereof so that the air pump hangs down from the cap base body to reach the inside of the bottle.

Cohen, US Pat. No. 4,175,704, discloses a non-aerosol spray device. The device comprises a sump containing a liquid material to be dispensed, a plunger slidable within the sump as a piston, and an elongated tubular member for actuating the plunger, the tubular member extending therethrough. Has a through hole that extends to the inside of the liquid reservoir at one end thereof. The other end communicates with the spray nozzle, and in conjunction with the movement of the plunger, the liquid material is passed from the liquid reservoir through the through hole to the spray nozzle.

Genese, US Pat. No. 4036232, discloses a suction device for drawing a liquid from a body cavity so that a constant suction level is obtained. The device has a dual piston member, the first head of which has a sealing engagement with the barrel of the syringe,
The second head is housed in a nesting member that is arranged to face the first head and is received in the syringe cylinder. When the nesting member moves outward from the syringe cylinder, the inside of the nesting member and a part of the cylinder are in a vacuum state. A part of this tubular portion is a portion between the first piston member and the nozzle,
The nozzle is shielded from the outside by a valve. When the flexible tube is inserted into the body cavity and the valve is opened, the liquid is sucked into the syringe barrel due to the partial vacuum created in the syringe barrel and the nesting member.

US Pat. No. 3,191,807 to Rodrigues, Jr. discloses a liquid dispensing device for dispensing very small amounts of liquid.
The device comprises a syringe having a longitudinal passage for a piston assembly, with an enlarged recess at its upper end. The passage is connected to the intake-exhaust member. The flow rate into the chamber is controlled by the inlet valve assembly and the exhaust valve assembly controls the flow rate from the chamber. The piston assembly in the passageway has a piston for adjusting the effective volume of the suction-exhaust chamber during reciprocating motion. The stroke of the piston assembly is regulated and controlled by the plunger.

US Pat. No. 2,880,939 to Esmay discloses a device for spraying a liquid material in atomized or atomized form. The spray device comprises an elongated cylindrical outer tube made of transparent material, and a plunger supply tube made of transparent material that is loosely fitted into the upper end of the outer tube and has a length similar to that of the outer tube. . The plunger tube contains the material to be sprayed and has a spring-biased valve assembly at its bottom. When the plunger tube is fully extended into the outer tube, the valve assembly is fully opened to dispense a quantity of material into the reservoir at the bottom of the plunger tube.

Pollak US Pat. No. 2,743,847 discloses a mixing and dispensing device for mixing and dispensing a liquid preservative and a quantity of water. The device comprises a cylindrical reservoir which is adapted to be fixed to the outlet, the reservoir being a main chamber for mixing and storing, a reservoir chamber mounted above the mixing chamber, and a metered drug solution. And means for distributing and mixing water in the main chamber, and control means for controlling the amount of water introduced and the amount of discharge of the mixture of water and the drug solution, respectively.

Hein US Pat. No. 1563627 discloses a hypodermic syringe structure. In this structure, the solution to be injected is contained in a vial or ampoule used as a piston in the syringe when the syringe is filled with the solution and the solution is injected.

To date, there has been no fluid dispensing device which does not require removal of the pressurizing means from the sump containing the liquid material and which simplifies accurate dispensing of the liquid sufficiently. The present invention overcomes the significant drawbacks of conventional fluid dispensing devices and provides accurate solutions for dental, medical, veterinary, pharmaceutical, industrial and commercial manufacturing applications, and a variety of other applications. Disclosed is a pressurized fluid dispenser that can be supplied in a controlled and controllable manner.

[0011]

SUMMARY OF THE INVENTION The present invention is directed to a pressurized fluid dispensing means that uses precision fluid injection means to provide precisely controlled dosing of fluid. In one aspect of the invention, the pressurized fluid dispensing means of the invention comprises at least one reservoir chamber that can be filled through a port that can be opened and closed by a removable cap.
The sump chamber is configured to receive the plunger means within the integral chamber and delivers compressed air to the sump chamber via the first check valve means, the compressed air being discharged from the sump chamber through the filter discharge channel. Acts to distribute. The sump chamber is equipped with a second check valve means. The filtered discharge channel is further connected to a second check valve means and further connected to a check valve means disposed within the precision fluid injection means for manual flow control.

In another aspect of the invention, the pressurized fluid dispensing means of the invention comprises attachment means for mounting precision control fluid injection means in the form of a handpiece assembly.

In an additional aspect of the present invention, the plunger means of the pressurized fluid dispensing means of the present invention comprises a manually operated plunger shaft having a head portion and a reservoir chamber. It is possible to slide inside the integrated chamber. The plunger shaft is arranged in the chamber between a plurality of guide means and is slidably held in the plunger chamber.

In another aspect of the invention, the sump chamber may have a threaded port for receiving a threaded plunger having a manually operated plunger shaft. The shaft has a head portion and is slidable in a detachable plunger chamber as a plunger means for pressurizing the liquid reservoir chamber.

In a further aspect of the invention, the pressurized fluid dispensing means of the invention comprises a filtration dispensing tube, the tube having attachment means and a removable cap for mounting precision control fluid injection means in the form of a handpiece assembly. Through the.

According to an additional aspect of the invention, the precision controlled fluid injection handpiece assembly means comprises a handpiece having a tube that connects to a nosepiece having an integral cannula.

According to a further aspect of the invention, the precision control fluid infusion handpiece assembly means is associated with a distal connector means for interfacing with a removable cannula and needle, and an attachment means for the pressurized fluid dispensing means. A handpiece having a proximal connector means for

The present invention has several advantages and advantages. One of the advantages of the present invention is that the pressurized fluid dispensing device of the present invention provides a reservoir means for pressurized dispensing of various solutions, fluids or liquids.

Another advantage of the present invention is that the pressurized fluid dispensing device of the present invention is a pressurized fluid reservoir and a manually operated device designed to accurately inject a desired amount of solution, liquid or fluid at a particular site or location. The tubing can be attached to the control handpiece for quick connection. The pressurized fluid dispenser of the present invention is adaptable to normal dental cleaning, eg, for living organisms. For example, root canal preparation, root sinus, gingival sulcus, branch, implant sinus, extraction sinus, inflamed mouth,
It can be used to clean the inflamed area around the crown or other areas of the oral cavity or the inflamed area. In addition, the device of the present invention can be utilized for a variety of medical or veterinary cleansing procedures on the nostrils, ear canals, drainage fistulas or other sites of inflammation in mammals. Further, the device of the present invention can be used for various commercial or industrial uses, for example, for precise application of adhesives and lubricants.

A further advantage of the present invention is that the pressurized fluid dispensing device of the present invention can simply and accurately dispense liquids, solutions or fluids without having to remove the pressurized pump means from the sump.

One of the advantages of the present invention is that the pressurized fluid distribution device of the present invention is completely independent of any form of power, motor, or means of connection to a power source, fluid or compressed air. It is a self-contained movable pressure distribution device, and it has only a minimum number of movable parts.

Another advantage of the present invention is that the pressurized fluid dispensing device of the present invention can be formed by a molding process using an elastomeric material such as plastic or a cutting and casting process using metal, plastic or a combination thereof. It can be manufactured economically.

Yet another advantage of the present invention is that the pressurized fluid dispensing device of the present invention allows for safe, efficient, effective and versatile use. Other advantages and advantages of the invention will be readily apparent to those skilled in the art from the following detailed description, drawings and appended claims.

[0024]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the pressurized fluid dispenser of the present invention is shown in FIGS. Pressurized fluid dispenser 10 for use with precision controlled fluid injectors such as dental handpiece 11.
Comprises a housing 12 made of an elastomeric, moldable material such as a suitable plastic well known to those skilled in the art. Alternatively, the housing 12 may be cast or machined of metal, plastic, or a combination of these materials. housing
12 has a generally rectangular portion 14 on the left and a generally rectangular portion 16 on the right. The left side portion 14 is a top on the bottom 20
18 is in the form of overlapping.

As shown in FIG. 2, the right side portion of the housing 12
16 has a reservoir 22 which is a circular port
It can be filled with the desired fluid or liquid through 24. The circular port 24 can be closed with a removable lid 26, the screw 27 receiving the removable lid 26 is threaded, and when the lid 26 is screwed into the port 24, the liquid reservoir 22 is sealed and the liquid Air is prevented from flowing into the reservoir. A container 22 extends into the left side portion 14 of the housing 12 and receives a plunger means 28 as shown in FIGS. 2 and 4 to filter out compressed air for dispensing fluid from the sump, as will be described in more detail below. First check valve means 30 provided through channel 32
Is in communication with. The channel 32 is connected to a second check valve means 34 located within the fluid injector 11 to regulate fluid flow and prevent fluid leakage when the device 10 is not in use.

The reservoir 22 further includes an integral chamber 36 within the left side portion 14 of the housing 12 for receiving the plunger means 28. The pressurized fluid distribution device 10 of the present invention is
As shown in FIGS. 3 and 5, there is an attachment means 38, such as a nozzle, which is included in the device 10 for the handpiece assembly.
Fix 11 The handpiece assembly 11 comprises a male threaded member 39 which engages the attachment means 38. Member 39
Is connected to the handpiece assembly 11 by a tube 40 through which fluid flows. The attachment means 38 is screwed with the thread of the female valve post 44 to fit the member 39,
Fix it in the desired position. Attachment means 38
Are preferably located at the lowest level of the integral chamber 36.

The plunger means 28 in the chamber 36 is
Plunger shaft with head 46 made of rubberized material
Equipped with 42. The shaft 42 is slidable within the chamber 36 and applies pressure to the fluid within the sump 22 as described below. The shaft 42 has a substantially cylindrical guide means 48 and
Located in the chamber 36 between 50, these guiding means slidably support the shaft 42 in the chamber 36 in vertical up and down motion.

When not in use, the handpiece assembly 11 of the device 10 is mounted within a sleeve 54 located on the bottom 56 of the device housing 12 as shown in FIGS. In this way, accidental damage to the handpiece 11 is minimized and is in a convenient location for future use.

To use the device 10, remove the lid 26,
The solution, liquid or fluid is injected into the sump 22 to the desired level. Then, the lid 26 is again firmly inserted into the circular port 24 to seal the liquid reservoir 22. Air remains in the integrated chamber 36. Pressurize sump 22 to filter solution, fluid or liquid into attachment means 38 and discharge channel
The top 18 of the left side 14 of the housing 12 is manually pushed down towards the bottom 20 for ejection through 32. This movement pushes down on the plunger shaft 42, which results in the forced injection of compressed air through the first check valve means 30 into the sump 22. The air then rises above the surface of the solution, fluid or liquid in the sump 22. The air pressure created in this way is
It serves to force the tube 40 into the handpiece assembly 11 through the filter discharge channel 32. The liquid reservoir 22 is
Continue to release until the air pressure therein drops below the pressure required to release the solution, fluid or liquid into the handpiece assembly 11. To maintain the flow of solution, fluid or liquid until the reservoir 22 is empty, the operator of the device 10 applies manual pressure by continuously pushing down the top 18 of the housing 12 towards the bottom 20. Must be given continuously.

The pressurized fluid dispenser of the present invention, when properly used as described above, is safe and easy to use and is a precision controlled fluid injector for a wide range of medical, dental, commercial and industrial applications. Supply a solution, fluid or liquid to.

The above examples are intended to illustrate the invention, but not to limit the invention. Many changes and modifications can be made without departing from the spirit and scope of the invention.

[Brief description of drawings]

FIG. 1 is a perspective view of a pressurized fluid distribution device of the present invention.

FIG. 2 is a vertical cross-sectional view of a liquid reservoir and its integral chamber in the pressurized fluid distribution device of the present invention.

FIG. 3 is a horizontal cross-sectional view of the bottom of the pressurized fluid distribution device of the present invention.

4 is a cross-sectional view of the integral chamber of the pressurized fluid dispenser of FIG. 3 showing the plunger means of the present invention.

5 is a perspective view of a bottom portion of the integrated chamber shown in FIG. 3 (a sectional view taken along line 5-5 of FIG. 3).

FIG. 6 shows the bottom of the pressurized fluid distribution device of the present invention.
FIG. 6 is a perspective view (sectional view taken along line 6-6 of FIG. 3) showing a part of the bottom of the liquid reservoir of FIG.

[Explanation of symbols]

 10 Pressurized Fluid Distributor 11 Handpiece Assembly 12 Housing 14, 16 Rectangular Part of Housing 18 Top of Housing 20 Bottom of Housing 22 Reservoir 24 Circular Port 26 Removable Lid 28 Plunger Means 30 First Check Valve 32 Filtration discharge channel 34 Second check valve 36 Integrated chamber 38 Attachment means 39 Male screw member 40 Tubes 48, 50 Guide means

Front Page Continuation (72) Inventor Oscar Marmin, USA, Idaho, 83705, Boyz, Federal Way 3621

Claims (29)

[Claims] 1. A pressurized fluid dispenser for use with a precision controlled fluid injector, comprising a reservoir that can be filled through a circular port, the circular port being closed by a removable lid. Is configured to receive a plunger means,
And in communication with first check valve means for providing compressed air through the filter discharge channel to dispense fluid from the sump, the channel being disposed within the fluid injector,
A pressurized fluid distribution device connected to a second check valve means for adjusting the flow rate of said fluid. 2. A pressurized fluid dispenser according to claim 1 wherein said reservoir comprises an integral chamber for receiving said plunger means. 3. The pressurized fluid of claim 2 wherein said device comprises attachment means for securing said precision control fluid injector thereto, said attachment means being located at a lowest internal level of said chamber. Distribution device. 4. The pressurized fluid dispenser of claim 3, wherein the precision control fluid injector is a handpiece assembly. 5. The pressurized fluid dispenser according to claim 4, wherein the attachment means comprises a tube. 6. The pressurized fluid dispenser of claim 4, wherein the attachment means comprises a nozzle. 7. A pressurized fluid dispenser according to claim 2 wherein said plunger means comprises a plunger shaft having a head, said shaft being slidable within said integral chamber. 8. A pressurized fluid dispenser according to claim 7, wherein said plunger means is manually operated. 9. The plunger shaft of claim 8, wherein the plunger shaft is disposed within the chamber between a plurality of generally cylindrical guide means for keeping the shaft slidable within the chamber. Pressurized fluid dispenser. 10. The pressurized fluid dispenser of claim 1, wherein the circular port is threaded to receive the removable lid and the lid is arranged to seal the reservoir. 11. At least one sump chamber capable of being filled with fluid through a port that can be closed with a removable lid, the chamber utilizing a plunger means and removing the fluid from said sump with a precision fluid. Pressurized fluid distribution means configured to communicate with first check valve means for providing compressed air through the discharge channel for discharge to the attachment means to which the injector is connected and in combination with the attachment means. 12. The pressurized fluid distribution means according to claim 11, wherein said reservoir chamber comprises an integral plunger chamber for receiving said plunger means. 13. The pressurized fluid distribution means of claim 11 wherein said reservoir chamber comprises connector means for receiving said plunger chamber, said plunger means being located within the plunger chamber. 14. The pressurized fluid distribution means of claim 11 wherein said discharge channel comprises particulate filtration means. 15. The apparatus includes attachment means for securing the precision fluid injector to the apparatus, the attachment means preferably being located near a lowest internal level of the sump chamber. 13. The pressurized fluid distribution means according to claim 12. 16. The pressurized fluid distribution means according to claim 15, wherein said attachment means comprises an integrated valve for controlling the flow rate of fluid passing through said attachment means. 17. The pressurized fluid distribution of claim 12 wherein said plunger means comprises a plunger shaft having a head, said head shaft being slidable within said integral chamber. means. 18. The pressurized fluid dispensing means of claim 17, wherein the plunger means is manually operated. 19. The additive according to claim 17, wherein the plunger shaft is arranged in the chamber between a plurality of substantially parallel guide means for slidably holding the shaft in the chamber. Pressure fluid distribution means. 20. The fill port of the sump chamber is circular and is threaded to receive the removable lid, and the lid is threaded, the lid positioned to seal the sump chamber. 12. The pressurized fluid distribution means according to claim 11, which is provided. 21. The threaded, removable lid comprises a length of filtration discharge tube extending from the lid sealing the reservoir chamber to a lower internal level of the chamber. A pressurized fluid distribution means as described. 22. The pressurized fluid dispensing means of claim 20, wherein said threaded, removable lid comprises attachment means for securing said precision fluid injector to said lid. 23. The pressurized fluid distribution means according to claim 22, wherein said attachment means comprises an integral valve for controlling the flow rate of fluid passing through said attachment means. 24. The pressurized fluid dispensing means according to claim 11, wherein said precision dispenser is a handpiece assembly with a manually operated control valve. 25. The pressurized fluid dispensing means of claim 24, wherein the handpiece assembly comprises a handle and a distal nosepiece with an integral cannula located within the assembly. 26. The pressurized fluid dispensing means of claim 25, wherein said distal nosepiece with integral cannula is connected to said attachment means with a flexible tube. 27. The pressurized fluid distribution means according to claim 24, wherein said handpiece assembly comprises a proximal connector means having a through-hole continuous with a through-hole in said distal nosepiece. 28. The pressurized fluid dispensing means of claim 27, wherein the distal nosepiece comprises attachment means to which a removable cannula or needle can be attached. 29. The proximal connector of the handpiece assembly secures the handpiece assembly to the attachment means of a pressurized fluid distribution means using a flexible tube having distal and proximal connectors. 29. The pressurized fluid distribution means according to claim 28, which are connected together.