Syringe Appliance

Abstract

A syringe appliance which is uniquely configured so as to enable the user thereof to manipulate the syringe with one hand and wherein the syringe appliance can be used time and again with disposable syrings. The syringe appliance permits positive injection or withdrawal of the inner or piston element of the syringe and is provided with a pistol-like grip to facilitate manipulation.

Description

BACKGROUND OF THE INVENTION

This invention pertains to a syringe appliance which is utilizable on a repeated basis with syringes of the disposable type. The syringe appliance has a pistol-like grip handle which permits the user of the syringe appliance to manipulate injections or withdrawals of fluids or body tissue with one hand while leaving the other hand free for other purposes.

The syringe appliance of this invention is easy to use, employs a positive guided action and may be utilized in a myriad of applications. The mechanical features of the syringe appliance are such that long life without mechanical breakdown is virtually assured.

While the prior art has suggested various types of syringes, the syringes have either involved complicated and costly manufacturing techniques or utilization of materials which have made them economically unattractive or alternatively undesirable with respect to the degree of mechnical failure that has resulted. In other instances, disposable syringes have been suggested, but these have been found undesirable in some respects.

With the hereindisclosed invention, it is now possible to utilize disposable type syringes which are not economically infeasible.

OBJECTS AND SUMMARY OF THE INVENTION

It is an object of the invention to provide a syringe appliance.

Another object of the invention is to provide a syringe appliance having a pistol-grip like configuration.

It is still another object of the invention to provide a syringe appliance that may be utilized with disposable syringes.

It is still another and further more important object of the invention to provide a syringe appliance wherein use thereof may be easily accomplished with one hand and wherein positive action in usage is obtained.

It is still another and still further more important object of the invention to provide an appliance for disposable syringes which is held and manipulated by one hand of the user wherein the mechanical functions of the appliance are virtually fault free.

These and further objects of the invention will become apparent from the hereinafter following commentary taken in conjunction with the figures of the drawings.

In the exemplary embodiment, the invention pertains to a syringe appliance comprising a first member having retaining means to retain the outer tube of a syringe. A handle member is superpositioned and operatively associated with said first member. A second member having a receiving portion to receive an end portion of the inner tube of the syringe is reciprocally mounted for movement towards and away from said first member and guide means are provided to guide the movement of the second member in a direct and positive manner.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an enlarged perspective view of the syringe appliance of this invention illustrating a disposable syringe in operative position.

FIG. 2 is a side view of the syringe appliance shown in FIG. 1 but with the syringe removed for purposes of clarity

FIG. 3 is a side view of the syringe appliance illustrated in FIG. 1 showing the appliance in the full injecting position or alternately readied for a withdrawal function.

FIG. 4 is a view similar to FIG. 3 in partial cross-section showing the mechanical features of the appliance illustrated in FIG. 3; and

FIG. 5 is a view taken along the line 5--5 of FIG. 4.

DESCRIPTION OF THE BEST EMBODIMENTS COMTEMPLATED

Referring to the figures of drawings wherein the like numerals of reference designate like elements throughout, it will be seen that the syringe appliance 2 comprises a first member 4 of annular collar-like configuration having a cut-out or slotted portion formed by removal of a portion of the peripheral depending wall 6 so as to provide an accommodating opening 8 of sufficient size to receive the outer tube 10 of the syringe assembly 12. An annular bore 14 is provided in the first member 4 and the interior upper portion 16 is provided with an annular slot 18 in order to captively receive an annular flange 20 of the upper portion of the outer tube 10 of syringe assembly 12.

It will be noted that the opening 8 of member 4 provides means whereby the syringe assembly 12 and more particularly the outer tube 10 may be received into releasably captive relationship with respect to first member 4. The outer tube 10 of syringe assembly 12 is provided with the usual coupling and needle portion 22.

First member 4, in this instance of metal, as the remainder of the appliance (although it will be obvious to those of ordinary skill in the art that in some instances molded plastics and other materials would suffice as well) has an upper flanged portion 24 extending from which are two opposed rod-like members 26 rigidly secured to the flange portion 24 and terminating in handle member 28 which will be noted has a pistol-grip configuration. The length of the rods 26 are such that the appliance 2 may be easily held by the human hand with one or two fingers in operative association with a second member as will now be described.

The second member 30 is provided with opposed grooves or slots 32 and is guidingly retained on the rods 26 for reciprocal movement towards and away from the flange portion 24 of first member 4. It will be noted that the member 30 has a lower cut-out portion 34 with an annular slot 36 to receive, in releasably captive fashion, the upper portion 38 of the inner or piston tube 40 of the syringe assembly 12. The upper portion of second member 30 is provided with an oval cut-out portion 42 which is adapted to be grasped by one or two fingers of the user of the appliance.

The second member 30 has a path of travel as determined by the upper surface of flange 24 and the lower surface of the pistol-grip handle 28.

Referring to FIG. 3 the lower-most point to which the second member 30 with the associated outer tube 40 may move is illustrated. This position is either the full injection position where the substance in the syringe assembly 12 is to be injected or alternately the readying position for withdrawal of fluids where the appliance 2 is to be used for those purposes. The FIG. 4 illustration shows the appliance 2 in the ready position to inject fluid contained within the tube 10 of syringe assembly 12 or alternately the full withdrawal position where the appliance 2 is used for withdrawing body fluids and the like.

It will be noted from FIGS. 3 and 4 that operation of the appliance 2 is positive and direct in that the second member 30 is positively guided along its path of travel by the cooperation and co-action of guide means or rods 26. It will also be noted that the retaining portion of second member 30 is sufficiently large to accommodate a variety of diameter sizes of second tubes 40 making up a syringe assembly 12. Likewise the same is true for the first member 24 with regard to the outer tube 10 of syringe assembly 12. The only requirement for retaining the tubes 10 and 40 in cooperative relationship with the first member 24 and second member 30 respectively is that their upper ends be provided with annular disc portions to be received by the appropriate portions of the first member 24 and second member 30 as illustrated in the drawings and described hereinbefore.

While the invention has been described with respect to a specific illustration thereof, it will become apparent to those of ordinary skill in the art that various modifications and changes will suggest themselves and all such changes and modifications are intended to be covered by the appended claims.

Claims

I claim:

1. A manually operated syringe appliance for injecting and withdrawing fluids solely by manually applied forces comprising the combination: a first, collar-like member having a vertically open wall portion and an upper annular slot to captively receive the outer tube of a syringe in retained relationship therewith; a second block-like member having opposed lateral grooves and a first opening in the upper portion thereof sufficient in size to accommodate one or more human fingers, the lower portion having a second opening inner-set from said lateral grooves with a retaining slot to transversely receive the inner tube of a syringe in axially retained relationship therewith; a handle member forming a pistol grip-like configuration; and a pair of guide members operatively secured in spaced relationship between said first member and said handle member and forming a guide path therebetween, said second, block-like member being slideably mounted on said guide members for operative association between said lateral grooves and said guide members, and being adapted to slideably move between said handle member and said first member solely by the application of manual forces.

2. The syringe appliance in accordance with claim 1 wherein one terminus of said handle member is positioned in aligned relationship to one point on the outer periphery of said collar-like member and the opposite terminus of said handle member extends beyond the periphery of said first collar-like member opposite said one point.

3. The syringe appliance in accordance with claim 2 wherein said first opening of said second, block-like member is oval-shaped.

4. The syringe appliance in accordance with claim 3 wherein said guide members are linear rods.

5. The syringe appliance in accordance with claim 4 wherein the length of said linear rods is sufficient to accommodate the inner tube of the syringe and facilitate grasping of said handle member and said oval-shaped opening of said second, block-like member by the human hand for single hand use of said appliance.