Abstract:
A new and improved anesthetic delivery tool and method of using the tool in transmucosal absorption applications of a gel topical anesthetic agent and in subdermal injections of a liquid anesthetic agent is disclosed. The anesthetic delivery tool comprises a housing unit having a hollow central cavity with a slip plate containing a plurality of needles directed towards the front end of the housing unit. The slip plate and the front portion of the hollow central cavity defining a front-end cavity for affixing a therapeutically effective aliquot of gel topical anesthetic agent. The anesthetic delivery tool also comprises a thin membrane positioned directly behind the slip plane and a push plate positioned at the rear end of the housing unit. The push plate, the thin membrane and the rear portion of the hollow central cavity defining a rear-end cavity for affixing a therapeutically effective amount of liquid anesthetic agent. The method of using comprises obtaining, identifying, removing, adhering, aligning, allowing, positioning, exerting, removing, pulling, and discarding.

Description:
FIELD OF THE INVENTION 
     The present invention relates to drug delivery devices, more particular to an anesthetic delivery tool for use in connection in performing both transmucosal absorption applications and subdermal injections of anesthetic agents. 
     DESCRIPTION OF THE PRIOR ART 
     It is generally believed and rarely argued against the consensus that pain is to avoided or at least minimized. Therefore, the application of various types of anesthetic agents to suffering patients has not only been welcomed by patients but by physicians and dentist as well. It is not generally known that physicians and dentist themselves also may suffer serious psychological deleterious effects from inflicting the inevitable pain associated with the practice of treating a suffering patient. In particular, it is has been argued that the reason why dentist suffer from unusually high suicide rates is because dentist are exposed to an environment of inflicting great pain on others. Therefore, the on-going struggle to find a means for minimizing or to eliminate pain reaches well beyond the usefulness in minimizing the pain in patients but also reaches the usefulness in minimizing the deleterious psychological effects on physicians and dentist. Presently local anesthetic delivery is achieved by transmucosal absorption of a topical anesthetic agent for topical anesthesia. This is then followed by a direct field or a nerve block to the nerves at the desired work areas desired to be anesthetized. However, as the needle penetrates the deeper layers of muscle and tissue, pain is still experienced by the patient. 
     A wide variety of anesthetic delivery tools is currently available on the commercial market and an even larger number of these types of devices are known in the art of anesthetic delivery tols, for example, the drug delivery device disclosed by Gerstel and Place in U.S. Pat. No. 3,964,482; the dispensing device for a liquid medicament disclosed by Thoma and Krotlinger in U.S. Pat. No. 4,781,688; the drug delivery device disclosed by Panoz in U.S. Pat. No. 4,822,617; the subdermal delivery device disclosed by Kriesel et all in U.S. Pat. No. 5,693,018; the intradermal drug delivery device and method for intradermal delivery of drugs disclosed by Gross and Kelly in U.S. Pat. No. 5,848,991; and the fluid delivery device with collapsible needle cover disclosed by Kriesel and Thompson in U.S. Pat. No. 6,126,637. 
     While all of the above-described devices fulfill their respective, particular objectives and requirements, the aforementioned patents do not describe an anesthetic delivery tool having a housing unit with a hollow central cavity, a slip plate containing a plurality of needles and a push plate, wherein the slip plate is slidably attached within the hollow central cavity. These elements would specifically match the user&#39;s particular individual needs of making it possible to have a front-end cavity containing a gel topical anesthetic agent for use in transmucosal absorption applications, as well as, a rear-end cavity containing a liquid anesthetic agent for use in subdermal injections of the liquid anesthetic agent. The above-described patents make no provision for a device capable of applying anesthetic agents via transmucosal absorption applications followed by subdermal injections. 
     Therefore, a need exists for a new and improved anesthetic delivery tool having a housing unit with a hollow central cavity, a slip plate containing a plurality of needles and a push plate, wherein the slip plate is slidably attached within the hollow central cavity. In this respect, the anesthetic delivery tool according to the present invention substantially departs from the conventional concepts and designs of the prior art, and in doing so provides an apparatus primarily developed for the purpose of making it possible to have a front-end cavity containing a gel topical anesthetic agent for use in transmucosal absorption applications, as well as, a rear-end cavity containing a liquid anesthetic agent for use in subdermal injections of the liquid anesthetic agent. 
     SUMMARY OF THE INVENTION 
     The present device, according to the principles of the present invention, overcomes the shortcomings of the prior art by providing a new and improved anesthetic delivery tool and method of using the tool in transmucosal absorption applications of a gel topical anesthetic agent and in subdermal injections of a liquid anesthetic agent is disclosed. The anesthetic delivery tool comprises a housing unit having a hollow central cavity with a slip plate containing a plurality of needles directed towards the front end of the housing unit. The slip plate and the front portion of the hollow central cavity define a front-end cavity for affixing a therapeutically effective aliquot of gel topical anesthetic agent. The anesthetic delivery tool also comprises a thin membrane positioned directly behind the slip plane and a push plate positioned at the rear end of the housing unit. The push plate, the thin membrane and the rear portion of the hollow central cavity defining a rear-end cavity for affixing a therapeutically effective amount of liquid anesthetic agent. 
     In view of the foregoing disadvantages inherent in the known type anesthetic delivery tools now present in the prior art, the present invention provides an improved anesthetic delivery tool, which will be described subsequently in great detail, is to provide a new and improved anesthetic delivery tool which is not anticipated, rendered obvious, suggested, or even implied by the prior art, either alone or in any combination thereof. 
     To attain this, the present invention essentially comprises a housing unit having a hollow central cavity with a slip plate containing a plurality of needles directed towards the front end of the housing unit. The slip plate and the front portion of the hollow central cavity define a front-end cavity for affixing a therapeutically effective aliquot of gel topical anesthetic agent. The anesthetic delivery tool also comprises a thin membrane positioned directly behind the slip plane and a push plate positioned at the rear end of the housing unit. The push plate, the thin membrane and the rear portion of the hollow central cavity defining a rear-end cavity for affixing a therapeutically effective amount of liquid anesthetic agent. 
     There has thus been outlined, rather broadly, the more important features of the invention in order that the detailed description thereof that follows may be better understood, and in order that the present contribution of the art may be better appreciated. 
     The invention may also include a gingival adhesive pad, a detachable film cover and a safety string. There are of course, additional features of the invention that will be described hereinafter and which will form the subject matter of the claims attached. 
     Numerous objects, features and advantages of the present invention will be readily apparent to those of ordinary skill in the art upon reading of the following detailed description of presently preferred, but nonetheless illustrative, embodiments of the present invention when taken in conjunction with the accompany drawings. In this respect, before explaining the current embodiment of the invention in detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. 
     As such, those skilled in the art will appreciate that the conception, upon which this disclosure is based may readily be used as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present invention. It is important, therefore, that the claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present invention. 
     It is therefore an object of the present invention to provide a new and improved anesthetic delivery tool that has all the advantages of the prior art anesthetic delivery tool and none of the disadvantages. 
     It is another object of the present invention to provide a new and improved anesthetic delivery tool that may be easily and efficiently manufactured and marketed. 
     An even further object of the present invention is to provide a new and improved anesthetic delivery tool that has a low cost of manufacture with regard to both materials and labor, and which accordingly is then susceptible of low prices of sale to the consuming public, thereby making such multipurpose storage unit and system economically available to the buying public. 
     Still another object of the present invention is to provide a new anesthetic delivery tool that provides in the apparatuses and methods of the prior art some of the advantages thererof, while simultaneously overcoming some of the disadvantages normally associated therewith. 
     Even still another object of the present invention is to provide a anesthetic delivery tool having a housing unit with a hollow central cavity, a slip plate containing a plurality of needles and a push plate, wherein the slip plate is slidably attached within the hollow central cavity. This makes it possible to have a front-end cavity containing a gel topical anesthetic agent for use in transmucosal absorption applications, as well as, a rear-end cavity containing a liquid anesthetic agent for use in subdermal injections of the liquid anesthetic agent. 
     Lastly, it is an object of the present invention to provide a new and improved method of using the present invention comprises obtaining, identifying, removing, adhering, aligning, allowing, positioning, exerting, removing, pulling, discarding. 
     Further, the purpose of the foregoing abstract is to enable the U.S. Patent and Trademark Office and the public generally, and especially the scientist, engineers and practitioners in the art who are not familiar with patent or legal terms or phraseology, to determine quickly from a cursory inspection the nature and essence of the technical disclosure of the application. The abstract is neither intended to define the invention of the application, which is measured by the claims, nor is it intended to be limiting as to the scope of the invention in any way. 
    
    
     These together with other objects of the invention, along with the various features of novelty that characterize the invention, are pointed out with particularity in the claims annexed to and forming a part of this disclosure. For a better understanding of the invention, its operating advantages and the specific objects attained by its uses, reference should be had to the accompany drawings and description matter in which there is illustrated preferred embodiments of the invention. 
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The invention will be better understood and objects other than those set forth above will become apparent when consideration is given to the following detailed description thereof. Such description makes reference to the annexed drawings wherein: 
     FIG. 1 is a perspective rear view of a preferred embodiment of the anesthetic delivery tool constructed in accordance with the principles of the present invention; 
     FIG. 2 is a perspective forward view of a preferred embodiment of the anesthetic delivery tool of the present invention; 
     FIG. 3 is a cross sectional side view of a push plate of a preferred embodiment of the anesthetic delivery tool of the present invention; 
     FIG. 4 is a cross sectional side view of a housing unit of a preferred embodiment of the anesthetic delivery tool of the present invention; 
     FIG. 5 is a bottom view of bottom view of a push plate of a preferred embodiment of the anesthetic delivery tool of the present invention; and 
     FIG. 6 is a top view of a housing unit of a preferred embodiment of the anesthetic delivery tool of the present invention. 
    
    
     The same reference numerals refer to the same parts throughout the various figures. 
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now to the drawings, and in particular FIGS. 1 to  6  thereof, one preferred embodiment of the present invention is shown and generally designated by the reference numeral  10 . One embodiment of the anesthetic delivery tool  10  for use in a transmucosal absorption application of a gel topical anesthetic agent and for use in a subdermal injection of a liquid anesthetic agent, the anesthetic delivery tool  10  comprises a housing unit  12 , a slip plate  20 , a plurality of hollow needles  22 , a first aliquot  24  of the gel topical anesthetic agent, a thin membrane  26 , a push plate  28 , and an second aliquot of a liquid anesthetic agent. The housing unit  12  comprises rear end  14 , a front end  16  and a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice. The slip plate  20  comprises a front surface, a rear surface and an edge, in which the edge of the slip plate  20  is slidably attached around a first portion of the interior surface of the continuous wall  18  of the housing unit  12 . The part of the central cavity between the front surface of the slip plate  20  and the front end  16  of the housing unit  12  define a front-end cavity. When a forward bearing force is exerted onto the rear surface of the slip plate  20  the slip plate  20  is capable of sliding forward into a portion of the front-end cavity. The plurality of hollow needles  22  is attached longitudinally through the slip plate  20 , in which the sharp-ends of the needles  22  extend away from the front surface of the slip plate  20  into the front-end cavity and generally pointing towards the front end  16  of the housing. The butt-ends of the needles  22  extend away from the rear surface of the slip plate  20  and generally point towards the rear end  14  of the housing. When the forward bearing force is exerted onto the rear surface of the slip plate  20  then the slip plate  20  is capable of sliding forward into a portion of the front-end cavity whereby extending the sharp-ends of the needles  22  beyond the front-end cavity. The first aliquot  24  of the gel topical anesthetic agent is affixed onto the front-end cavity, in which the first aliquot  24  of the gel topical anesthetic agent covers a portion of the sharp-ends of the needles  22 . The thin membrane  26  comprises a rear surface, a front surface and an edge, in which the edge of the thin membrane  26  is continuously attached around a second portion of the interior surface of the continuous wall  18  of the housing unit  12 . The thin membrane  26  is positioned behind the slip plate  20 , so that the thin membrane  26  penetrateable with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26 . The push plate  28  comprises a exterior surface, an interior surface and an edge, the edge of the push plate  28  is attached around the rear end  14  of the housing, wherein the part of the central cavity between the thin membrane  26  and the push plate  28  defining a rear-end cavity  30 . The second aliquot of the liquid anesthetic agent is affixed within the rear-end cavity  30 . 
     Another embodiment of the anesthetic delivery tool  10  comprises: a housing unit  12 , a slip plate  20 , a plurality of hollow needles  22 , an first aliquot  24 , a thin membrane  26 , a push plate  28 , a finger protector sheet  36 , a septum cap  40 , a spring  48 , an second aliquot, an adhesive strip  52 , a gingival adhesive pad  54 , a detachable film cover  56 , and a string  60 . The housing unit  12  has rear end  14 , a front end  16  and a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice. The continuous wall  18  of the housing unit  12  including: a ridge  32 , a lip  34 , a ledge  42 , and a rim  50 . The ridge  32  inwardly extends at a first portion of the interior surface of the continuous wall  18 . The lip  34  inwardly extends at the front end  16  of the housing within the central cavity. The ledge  42  inwardly extends along a second portion of the interior surface, the ledge  42  defining an orifice having a width. The rim  50  is attached to the rear end  14  of the housing unit  12 , in which the rim  50  defining an aperture having a width. The slip plate  20  has a front surface, a rear surface and an edge, the edge of the slip plate  20  is slidably attached around the first portion of the interior surface of the continuous wall  18  of the housing unit  12 . The edge of the slip plate  20  is attached to the ridge  32 . The part of the central cavity between the front surface of the slip plate  20  and the front end  16  of the housing unit  12  define a front-end cavity. When a forward bearing force is exerted onto the rear surface of the slip plate  20  the slip plate  20  is capable of sliding forward into a portion of the front-end cavity. The lip  34  has a width greater than the width of the slip plate  20 , wherein when the forward bearing force is exerted onto the rear surface of the slip plate  20 , the slip plate  20  is capable of sliding forward into a portion of the front-end cavity and the slip plate  20  is not capable of sliding past the lip  34 . Whereby the slip plate  20  is retainable within the front-end cavity of the housing by the lip  34 . The plurality of hollow needles  22  is attached longitudinally through the slip plate  20 . The sharp-ends of the needles  22  extend away from the front surface of the slip plate  20  into the front-end cavity and generally point towards the front end  16  of the housing. The butt-ends of the needles  22  extend away from the rear surface of the slip plate  20  and generally point towards the rear end  14  of the housing. When the forward bearing force is exerted onto the rear surface of the slip plate  20  then the slip plate  20  is capable of sliding forward into a portion of the front-end cavity whereby extending the sharp-ends of the needles  22  beyond the front-end cavity. The first aliquot  24  of the gel topical anesthetic agent is affixed onto the front-end cavity, wherein the aliquot of the gel topical anesthetic agent covers a portion of the sharp-ends of the needles  22 . The thin membrane  26  has a rear surface, a front surface and an edge. The edge of the thin membrane  26  is continuously attached around the ledge  42  at the second portion of the interior surface of the continuous wall  18  of the housing unit  12 . The thin membrane  26  is positioned behind the slip plate  20 . The thin membrane  26  is penetrateable with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26 . The push plate  28  has a exterior surface, an interior surface and an edge. The edge of the push plate  28  is attached around the rear end  14  of the housing. The part of the central cavity between the thin membrane  26  and the push plate  28  defining a rear-end cavity  30 . The edge of the push plate  28  comprises a sleeve  38  and a neck  44 . The sleeve  38  has a exterior width slightly smaller than the width of the central cavity of the housing, so that the sleeve  38  is slidably attached with the inner surface of the continuous wall  18  of the housing unit  12  within the rear-end cavity  30 . The sleeve  38  has an outside surface and an inside surface, in which the inside surface has an interior width. The inside surface of the sleeve  38  and the interior surface of the push plate  28  define a hollow shaft. The hollow shaft is in fluid communications with the rear-end cavity  30 . The neck  44  is attached to the sleeve  38  of the push plate  28 . The neck  44  has a width less than the sleeve  38 , so that the neck  44  and the sleeve  38  defining a shoulder  46 . When the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the shoulder  46  of the push plate  28  is not capable of sliding past the ledge  42 . Whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 . The orifice of the ledge  42  has a width less than the external width of the sleeve  38 . When the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the push plate  28  is not capable of sliding past the ledge  42 . Whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 . The aperture of the rim  50  has a width less than the external width of the sleeve  38  of the push plate  28 , in which the push plate  28  is restrained within the central cavity by the rim  50 . The finger protector sheet  36  has a rear surface, a front surface, a hole and an edge. The edge of the finger protector sheet  36  bisects the hollow shaft of the push plate  28  by being attached around a portion of the interior surface of the sleeve  38 . The part of the hollow shaft between the finger protector sheet  36  and the interior surface of the push plate  28  defining a top zone of the hollow shaft. The part of the hollow shaft between the finger protection sheet and the remaining part of the hollow shaft defines a bottom zone of the hollow shaft. The top zone is in fluid communications with the bottom zone through the hole in the finger protector sheet  36 . The finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the butt-ends of the needles  22 . The septum cap  40  is attached to the push plate  28 . The spring  48  is attached to ledge  42 , so that when the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12 . The spring  48  is capable of contacting the push plate  28 , in which the spring  48  provides a resistance against the forward bearing force when the push plate  28  slides towards the ledge  42 . The second aliquot of the liquid anesthetic agent is affixed within the rear-end cavity  30 . The adhesive strip  52  is attached to the rim  50  and is detachably attached to a portion of the exterior surface of the push plate  28 . When the forward bearing force is exerted onto the push plate  28 , then the adhesive pad is capable of detaching from the push plate  28 . The adhesive strip  52  maintains the push plate  28  against the rim  50  until the forward bearing force is exerted onto the push plate  28 . The gingival adhesive pad  54  is attached to the front end  16  of the housing unit  12 . The gingival adhesive pad  54  is intended to temporarily attach the housing unit  12  onto a patient&#39;s gingival work area. The detachable film cover  56  is attached onto the front end  16  of the housing unit  12 . The film cover  56  maintains in place the gel topical anesthetic agent within the front-end cavity. The film cover  56  has a pull tab  58 . Finally, the string  60  is attached to the housing. 
     One preferred method of using an anesthetic delivery tool  10  for use in a transmucosal absorption application of a gel topical anesthetic agent and for use in a subdermal injection of a liquid anesthetic agent, the method comprising the steps of obtaining, identifying, removing, adhering, aligning, allowing, positioning, exerting, removing, pulling, discarding. The obtaining step comprisesobtaining the anesthetic delivery tool  10  comprising: a housing unit  12  having rear end  14 , a front end  16  and a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice, wherein the continuous wall  18  of the housing unit  12  including: a ridge  32  inwardly extending at a first portion of the interior surface of the continuous wall  18 ; a lip  34  inwardly extending at the front end  16  of the housing within the central cavity; a ledge  42  inwardly extending along a second portion of the interior surface, the ledge  42  defining an orifice having a width; and a rim  50  attached to the rear end  14  of the housing unit  12 , the rim  50  defining an aperture having a width; a slip plate  20  having a front surface, a rear surface and an edge, the edge of the slip plate  20  slidably attached around the first portion of the interior surface of the continuous wall  18  of the housing unit  12 , the edge of the slip plate  20  is attached to the ridge  32 , the part of the central cavity between the front surface of the slip plate  20  and the front end  16  of the housing unit  12  defining a front-end cavity, wherein when a forward bearing force is exerted onto the rear surface of the slip plate  20  the slip plate  20  is capable of sliding forward into a portion of the front-end cavity, the lip  34  having a width greater than the width of the slip plate  20 , wherein when the forward bearing force is exerted onto the rear surface of the slip plate  20 , the slip plate  20  is capable of sliding forward into a portion of the front-end cavity and the slip plate  20  is not capable of sliding past the lip  34 , whereby the slip plate  20  is retainable within the front-end cavity of the housing; a plurality of hollow needles  22  attached longitudinally through the slip plate  20 , wherein the sharp-ends of the needles  22  extending away from the front surface of the slip plate  20  into the front-end cavity and generally pointing towards the front end  16  of the housing, wherein the butt-ends of the needles  22  extending away from the rear surface of the slip plate  20  and generally pointing towards the rear end  14  of the housing, wherein when the forward bearing force is exerted onto the rear surface of the slip plate  20  the slip plate  20  is capable of sliding forward into a portion of the front-end cavity whereby extending the sharp-ends of the needles  22  beyond the front-end cavity; an first aliquot  24  of the gel topical anesthetic agent affixed onto the front-end cavity, wherein the first aliquot  24  of the gel topical anesthetic agent covering a portion of the sharp-ends of the needles  22 ; a thin membrane  26  having a rear surface, a front surface and an edge, the edge of the thin membrane  26  continuously attached around the ledge  42  at the second portion of the interior surface of the continuous wall  18  of the housing unit  12 , the thin membrane  26  positioned behind the slip plate  20 , the thin membrane  26  penetrateable with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26 ; a push plate  28  having a exterior surface, an interior surface and an edge, the edge of the push plate  28  attached around the rear end  14  of the housing, wherein the part of the central cavity between the thin membrane  26  and the push plate  28  defining a rear-end cavity  30 , the edge of the push plate  28  comprises a sleeve  38  and a neck  44 , the sleeve  38  having a exterior width slightly smaller than the width of the central cavity of the housing, the sleeve  38  slidably attached with the inner surface of the continuous wall  18  of the housing unit  12  within the rear-end cavity  30 , the sleeve  38  having an outside surface and an inside surface, the inside surface having an interior width, wherein the inside surface of the sleeve  38  and the interior surface of the push plate  28  defining a hollow shaft, the hollow shaft in fluid communications with the rear-end cavity  30 , the a neck  44  attached to the sleeve  38  of the push plate  28 , the neck  44  having a width less than the sleeve  38 , the neck  44  and the sleeve  38  defining a shoulder  46 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the shoulder  46  of the push plate  28  is not capable of sliding past the ledge  42 , whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 , the orifice of the ledge  42  having a width less than the external width of the sleeve  38 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the push plate  28  is not capable of sliding past the ledge  42 , whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 , the aperture of the rim  50  having a width less than the external width of the sleeve  38  of the push plate  28 , whereby the push plate  28  is restrained within the central cavity by the rim  50 ; a finger protector sheet  36  having a rear surface, a front surface, a hole and an edge, the edge of the finger protector sheet  36  bisecting the hollow shaft of the push plate  28  by being attached around a portion of the interior surface of the sleeve  38  wherein the part of the hollow shaft between the finger protector sheet  36  and the interior surface of the push plate  28  defining a top zone of the hollow shaft, and the part of the hollow shaft between the finger protection sheet and the remaining part of the hollow shaft defining a bottom zone of the hollow shaft, the top zone in fluid communications with the bottom zone through the hole in the finger protector sheet  36 , wherein the finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the butt-ends of the needles  22 ; a septum cap  40  attached to the push plate  28 ; a spring  48  attached to ledge  42 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the spring  48  is capable of contacting the push plate  28 , whereby the spring  48  providing resistance against the forward bearing force when the push plate  28  slides towards the ledge  42 ; an second aliquot of the liquid anesthetic agent affixed within the rear-end cavity  30 ; an adhesive strip  52  attached to the rim  50  and detachably attached to a portion of the exterior surface of the push plate  28 , wherein when the forward bearing force is exerted onto the push plate  28 , the adhesive pad is capable of detaching from the push plate  28 , whereby the adhesive strip  52  maintaining the push plate  28  against the rim  50  until the forward bearing force is exerted onto the push plate  28 ; a gingival adhesive pad  54  attached to the front end  16  of the housing unit  12 , the gingival adhesive pad  54  intended to temporarily attach the housing unit  12  onto a patient&#39;s gingival work area; a detachable film cover  56  attached onto the front end  16  of the housing unit  12 , the film cover  56  maintaining in place the gel topical anesthetic agent within the front-end cavity, the film cover  56  having a pull tab  58 ; and a string  60  attached to the housing. The identifying step comprises identifying the gingival work area in the patient&#39;s mouth. The removing step comprises removing the detachable film cover  56  from the front end  16  of the housing unit  12 . The adhering step comprises adhering the front end  16  of the housing unit  12  to the gingival work area in the patient&#39;s mouth. The aligning step comprises aligning the string  60  outside of the patient&#39;s mouth. The allowing step comprises allowing time to pass so that the gel topical anesthetic agent can be transmucosally absorbed in the gingival work area in the patient&#39;s mouth. The positioning step comprises positioning a finger over the exterior surface of the push plate  28 . The exerting step comprises exerting the forward bearing force onto the exterior surface of the push plate  28  so that the slip plate  20  slides forward and the sharp-ends of the needles  22  puncture the gingival work area in the patient&#39;s mouth as well as penetrate the thin membrane  26  and subsequently inject the liquid anesthetic agent into the surrounding tissue of the gingival work area in the patient&#39;s mouth. The removing step comprises removing the finger from the exterior surface of the push plate  28 . The pulling step comprises pulling the housing unit  12  out of the patient&#39;s mouth. The discarding step comprises discarding the used housing unit  12 . 
     The push plate  28  may comprise any number of different devices as long as the push plate can be used to squeeze the liquid anesthetic agent from the confines of the rear-end cavity  30  through the plurality of needles  22 . One preferred configuration of the push plate comprises a flexible membrane attached around the rear orifice of the housing, wherein when the rear-end cavity  30  is filled with liquid anesthetic agent, the push plate  28  is capable of bulging outwardly from the rear-end of the housing and when the forward bearing force is exerted onto the exterior surface of the push plate  28 , then the flexible member is capable of bulging inwardly from the rear-end of the housing into a portion of the rear-end cavity  30 , whereby reducing the volume in the rear-end cavity  30 . Another preferred configuration of the push plate  28  is that it comprises a sleeve  38  having a exterior width slightly smaller than the width of the central cavity of the housing, the sleeve  38  is slidably attached with the inner surface of the continuous wall  18  of the housing unit  12  within the rear-end cavity  30 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  whereby reducing the volume of the rear-end cavity  30 . The sleeve  38  may further comprise an outside surface and an inside surface, the inside surface has an interior width, wherein the inside surface of the sleeve  38  and the interior surface of the push plate  28  defining a hollow shaft, the hollow shaft in fluid communications with the rear-end cavity  30 . Yet another preferred configuration of the push plate  28  is that it further comprises a septum cap  40  is attached to the push plate  28 , wherein the septum cap  40  intended for allowing the aliquot of liquid anesthetic agent to volumetrically affixed within the rear-end cavity  30 . The septum cap  40  is intended as the route of injecting the liquid anesthetic into the rear-end cavity. Still yet another preferred configuration of the push plate  28  is that it further comprises a neck  44  attached to the sleeve  38  of the push plate  28 , the neck  44  has a width less than the sleeve  38 , the neck  44  and the sleeve  38  defining a shoulder  46 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , the the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the shoulder  46  of the push plate  28  is not capable of sliding past the ledge  42 , whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 . 
     The first portion of the interior surface of the continuous wall  18  of the housing unit  12  may optionally comprise an inwardly extending ridge  32 . The edge of the slip plate  20  is attached to the ridge  32 , wherein when the forward bearing force is exerted onto the rear surface of the slip plate  20  the attachment of the ridge  32  to the edge of the slip plate  20  is breakable, whereby the slip plate  20  is capable of sliding forward into a portion of the front-end cavity whereby extending the sharp-ends of the needles  22  beyond the front-end cavity. 
     The first portion of the interior surface of the continuous wall  18  of the housing unit  12  may also optionally comprise an inwardly extending lip  34 . The lip  34  positioned near the front end  16  of the housing within the central cavity, the lip  34  has a width greater than the width of the slip plate  20 , wherein when the forward bearing force is exerted onto the rear surface of the slip plate  20 , the slip plate  20  is capable of sliding forward into a portion of the front-end cavity and the slip plate  20  is not capable of sliding past the lip  34 , whereby the slip plate  20  is retainable within the front-end cavity of the housing. 
     An optional finger protector sheet  36  may be added to the anesthetic delivery tool  10 . The finger protector sheet  36  comprises rear surface, a front surface, a hole and an edge. The finger protector sheet may comprise any number of different types of sheets as long as the finger protector sheet functions by protecting the finger pushing on the exterior surface of the push plate  28  from being jabbed by the butt-ends of the plurality of needles  22 . One preferred configuration of the finger protector sheet  36  comprises that the finger protector sheet  36  is attached around a portion of the interior surface of the continuous wall  18  of the housing unit  12  the rear-end cavity  30 , wherein the finger protector sheet  36  bisects the rear-end cavity  30 , the part of the rear-end cavity  30  between the finger protector sheet  36  and the push plate  28  defining a top chamber of the rear-end cavity  30 , and the part of the rear-end cavity  30  between the finger protection sheet and the thin membrane  26  defining a bottom chamber of the rear-end cavity  30 , the top chamber in fluid communications with the bottom chamber through the hole in the finger protector sheet  36 , wherein the finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the butt-ends of the needles  22 . Another preferred configuration of the finger protector sheet is that it is a component of the push plate  28  in which the finger protector sheet  36  has a rear surface, a front surface, a hole and an edge, the edge of the finger protector sheet  36  bisecting the hollow shaft by being attached around a portion of the interior surface of the sleeve  38  wherein the part of the hollow shaft between the finger protector sheet  36  and the interior surface of the push plate  28  defining a top zone of the hollow shaft, and the part of the hollow shaft between the finger protection sheet and the remaining part of the hollow shaft defining a bottom zone of the hollow shaft, the top zone in fluid communications with the bottom zone through the hole in the finger protector sheet  36 , wherein the finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the butt-ends of the needles  22 . 
     An optional ledge  42  extending inwardly from the interior surface of said continuous wall of said housing may be added to anesthetic delivery tool  10 . The ledge  42  defining an orifice where the thin membrane  26  is attached, wherein the orifice of the ledge  42  has a width less than the external width of the sleeve  38 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the push plate  28  is not capable of sliding past the ledge  42 , whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 . 
     An optional spring  48  may be added to the anesthetic delivery tool  10 . The spring  48  may be attached to the optional ledge  42 , wherein when the forward bearing force is exerted on the exterior surface of the push plate  28 , the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the spring  48  is capable of contacting the push plate  28 , whereby the spring  48  providing resistance against the forward bearing force when the push plate  28  slides towards the ledge  42 . 
     An optional rim  50  may be attached to the anesthetic delivery tool  10 . The rim  50  is attached to the rear end  14  of the housing unit  12 , the rim  50  defining an aperture that has a width less than the external width of the sleeve  38  of the push plate  28 , wherein the push plate  28  is restrained within the central cavity by the rim  50 . 
     An optional adhesive strip  52  may be added to the anesthetic delivery tool  10 . The adhesive strip  52  is attached to the rim  50  and is detachably attached to a portion of the exterior surface of the push plate  28 , wherein when the forward bearing force is exerted onto the push plate  28 , the adhesive pad is capable of detaching from the push plate  28 , whereby the adhesive strip  52  maintaining the push plate  28  against the rim  50  until the forward bearing force is exerted onto the push plate  28 . 
     An optional gingival adhesive pad  54  may be added to the anesthetic delivery tool  10 . The gingival adhesive pad  54  is attached to the front end  16  of the housing unit  12 . The gingival adhesive pad  54  intended to temporarily attach the housing unit  12  onto a patient&#39;s gingival work area. 
     An optional detachable film cover  56  may be added to the anesthetic delivery tool  10 . The detachable film cover  56  is attached onto the front end  16  of the housing unit  12 . The film cover  56  maintaining in place the gel topical anesthetic agent within the front-end cavity. The film cover  56  may have a pull tab  58  for providing a convenient grip for easy removal of the film cover  56  over the front end  16  of the housing unit  12 . 
     An optional string  60  may be added to  18 . The anesthetic delivery tool  10  described in claim  1  further comprising a string  60  attached to the housing, the string  60  intended to be used as a safety device to retrieve the housing from a patient&#39;s mouth or esophagus. 
     FIG.  1  and FIG. 2 depict perspective rear and forward views of a preferred embodiment of the anesthetic delivery tool  10 . The anesthetic delivery tool is shown having a housing unit  12 , a slip plate  20 , a plurality of hollow needles  22 , a first aliquot  24  of the gel topical anesthetic agent, a push plate  28 , and a rear-end cavity  30 . The housing unit  12  comprises a rear end  14 , a front end  16  and a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice. The slip plate  20  comprises a front surface, a rear surface and an edge, in which the edge of the slip plate  20  is slidably attached around a first portion of the interior surface of the continuous wall  18  of the housing unit  12 . The part of the central cavity between the front surface of the slip plate  20  and the front end  16  of the housing unit  12  defining a front-end cavity where the first aliquot  24  of the gel topical anaesthesia is affixed. The plurality of hollow needles  22  is attached longitudinally through the slip plate  20 , in which the butt-ends of the needles  22  are shown extending away from the rear surface of the slip plate  20  and generally pointing towards the rear end  14  of the housing. The first aliquot  24  of the gel topical anesthetic agent is affixed onto the front-end cavity, in which the first aliquot  24  of the gel topical anesthetic agent covers a portion of the sharp-ends of the needles  22 . The thin membrane  26  (not shown) comprises a rear surface, a front surface and an edge, in which the edge of the thin membrane  26  is continuously attached around a second portion of the interior surface of the continuous wall  18  of the housing unit  12 . The thin membrane  26  is positioned behind the slip plate  20 , so that the thin membrane  26  can be penetrated with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26 . The push plate  28  comprises a exterior surface, an interior surface and an edge, the edge of the push plate  28  is attached around the rear end  14  of the housing. The part of the central cavity between the thin membrane  26  and the push plate  28  defining a rear-end cavity  30 , in which the second aliquot of the liquid anesthetic agent is affixed. 
     FIG.  3  and FIG. 4 depict cross sectional side views of a push plate  28  and the housing unit  12  of a preferred embodiment of the anesthetic delivery tool  10  of the present invention. The dental anesthetic delivery device  10  comprises a housing unit  12 , a slip plate  20 , a plurality of hollow needles  22 , an first aliquot  24 , a thin membrane  26 , a push plate  28 , a finger protector sheet  36 , a septum cap  40 , a spring  48 , an second aliquot, an adhesive strip  52 , a gingival adhesive pad  54 , a detachable film cover  56 , and a string  60 . The housing unit  12  comprises rear end  14 , a front end  16  and a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice. The continuous wall  18  of the housing unit  12  is shown having a ridge  32 , a lip  34 , a ledge  42 , and a rim  50 . The ridge  32  inwardly extends at a first portion of the interior surface of the continuous wall  18 . The lip  34  inwardly extends at the front end  16  of the housing within the central cavity. The ledge  42  inwardly extends along a second portion of the interior surface, the ledge  42  defining an orifice having a width. The rim  50  is attached to the rear end  14  of the housing unit  12 , in which the rim  50  defining an aperture having a width. The slip plate  20  comprises a front surface, a rear surface and an edge, in which the edge of the slip plate  20  is slidably attached around a first portion of the interior surface of the continuous wall  18  of the housing unit  12 . The edge of the slip plate  20  is attached to the ridge  32 . The part of the central cavity between the front surface of the slip plate  20  and the front end  16  of the housing unit  12  define a front-end cavity. The first aliquot  24  of the gel topical anesthetic agent is affixed onto the front-end cavity, wherein the aliquot of the gel topical anesthetic agent covers a substantial portion of the sharp-ends of the needles  22 . The gingival adhesive pad  54  is attached to the front end  16  of the housing unit  12 . The gingival adhesive pad  54  is intended to temporarily attach the housing unit  12  onto a patient&#39;s gingival work area. The detachable film cover  56  is attached onto the front end  16  of the housing unit  12 . The film cover  56  maintains in place the gel topical anesthetic agent within the front-end cavity. The film cover  56  is shown having a pull tab  58 . The string  60  is attached to the housing, in which the string  60  is intended to be used as a retrieval safety device for convenient and safe removal of the anesthetic delivery tool  10  from a work area, such as, a patient&#39;s mouth or esophagus. When a forward bearing force is exerted onto the rear surface of the slip plate  20  the slip plate  20  is capable of sliding forward into a portion of the front-end cavity. The lip  34  is intended to have a width greater than the width of the slip plate  20 , so that the slip plate  20  is not capable of sliding past the lip  34 . The plurality of hollow needles  22  is attached longitudinally through the slip plate  20 . The sharp-ends of the needles  22  extend away from the front surface of the slip plate  20  into the front-end cavity and generally point towards the front end  16  of the housing. The butt-ends of the needles  22  extend away from the rear surface of the slip plate  20  and generally point towards the rear end  14  of the housing. When the forward bearing force is exerted onto the rear surface of the slip plate  20  then the slip plate  20  is capable of sliding forward into a portion of the front-end cavity whereby extending the sharp-ends of the needles  22  beyond the front-end cavity and into the subdermal layer of the patient. The thin membrane  26  has a rear surface, a front surface and an edge. The edge of the thin membrane  26  is continuously attached around the ledge  42  at the second portion of the interior surface of the continuous wall  18  of the housing unit  12 . The thin membrane  26  is positioned behind the slip plate  20 . The thin membrane  26  is penetrateable with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26 . The push plate  28  has a exterior surface, an interior surface and an edge. The edge of the push plate  28  is attached around the rear end  14  of the housing. The part of the central cavity between the thin membrane  26  and the push plate  28  defining a rear-end cavity  30 . The edge of the push plate  28  comprises a sleeve  38  and a neck  44 . The sleeve  38  has a exterior width slightly smaller than the width of the central cavity of the housing, so that the sleeve  38  is slidably attached with the inner surface of the continuous wall  18  of the housing unit  12  within the rear-end cavity  30 . The sleeve  38  has an outside surface and an inside surface, in which the inside surface has an interior width. The inside surface of the sleeve  38  and the interior surface of the push plate  28  define a hollow shaft. The hollow shaft is in fluid communications with the rear-end cavity  30 . The neck  44  is attached to the sleeve  38  of the push plate  28 . The neck  44  has a width less than the sleeve  38 , so that the neck  44  and the sleeve  38  defining a shoulder  46 . When the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the shoulder  46  of the push plate  28  is not capable of sliding past the ledge  42 . Whereby the ledge  42  is capable of preventing the push plate  28  from sliding out of the housing  12  and outside of the rear-end cavity  30 . The orifice of the ledge  42  is designed to have a width less than the external width of the sleeve  38 . When the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12  and the push plate  28  is not capable of sliding past the ledge  42 . Whereby the ledge  42  is capable of preventing the push plate  28  from sliding outside of the rear-end cavity  30 . The aperture of the rim  50  is designed to have a width less than the external width of the sleeve  38  of the push plate  28 , in which the push plate  28  is restrained within the central cavity by the rim  50 . The finger protector sheet  36  has a rear surface, a front surface, a hole and an edge. The edge of the finger protector sheet  36  bisects the hollow shaft of the push plate  28  by being attached around a portion of the interior surface of the sleeve  38 . The part of the hollow shaft between the finger protector sheet  36  and the interior surface of the push plate  28  defining a top zone of the hollow shaft. The part of the hollow shaft between the finger protection sheet and the remaining part of the hollow shaft define bottom zone of the hollow shaft. The top zone is in fluid communications with the bottom zone through the hole in the finger protector sheet  36 . The finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the butt-ends of the needles  22 . The septum cap  40  is attached to the push plate  28 . The spring  48  is attached to ledge  42 , so that when the forward bearing force is exerted on the exterior surface of the push plate  28 , then the push plate  28  is capable of sliding forwardly along the inner surface of the continuous wall  18  of the housing unit  12 . The spring  48  is capable of contacting the push plate  28 , in which the spring  48  provides a resistance against the forward bearing force when the push plate  28  slides towards the ledge  42 . The second aliquot of the liquid anesthetic agent is affixed within the rear-end cavity  30 . The adhesive strip  52  is attached to the rim  50  and is detachably attached to a portion of the exterior surface of the push plate  28 . When the forward bearing force is exerted onto the push plate  28 , then the adhesive pad is capable of detaching from the push plate  28 . The adhesive strip  52  maintains the push plate  28  against the rim  50  until the forward bearing force is exerted onto the push plate  28 . 
     FIG. 5 depicts a bottom view of a push plate  28  of a preferred embodiment of the anesthetic delivery tool  10 . The push plate  28  has an exterior surface, an interior surface and an edge. The edge of the push plate  28  is attached around the rear end  14  of the housing. The edge of the push plate  28  comprises a sleeve  38  and a neck  44  (not shown). The sleeve  38  has a exterior width slightly smaller than the width of the central cavity of the housing, so that the sleeve  38  is slidably attached with the inner surface of the continuous wall  18  of the housing unit  12  within the rear-end cavity  30 . The neck  44  has a width less than the sleeve  38 , so that the neck  44  and the sleeve  38  define a shoulder  46 . The finger protector sheet  36  has a rear surface, a front surface, a hole and an edge. The edge of the finger protector sheet  36  is attached around a portion of the interior surface of the sleeve  38  of the push plate  28 . The finger protector sheet  36  is made of a puncture resistant material resistant to being penetrated by the blunt-ends of the needles  22 . 
     FIG. 6 depicts a top view of a housing unit  12  of a preferred embodiment of the anesthetic delivery tool  10  of the present invention. The housing unit  12  has a continuous wall  18  defining a hollow central cavity with a rear orifice and a front orifice. The continuous wall  18  of the housing unit  12  includes a ledge  42  (not shown) that extends inwardly along a second portion of the interior surface. The ledge  42  defines an orifice having a width. Attached to the ledge  42  is the thin membrane  26  (not shown) and contacting the ledge  42  within the rear-end cavity  30  is the spring  48 . The spring  48  provides resistance against to the push plate  28  so that the operator can sense that the injection is complete. Towards the front orifice of the housing unit  12  is the slip plate  20  slidably attached to the hollow central cavity. The plurality of hollow needles  22  is attached longitudinally through the slip plate  20 . The butt-ends of the needles  22  are shown extending away from the rear surface of the slip plate  20  and generally pointing towards the rear end  14  of the housing. The thin membrane  26  is penetrateable with the butt-ends of the needles  22  when the forward bearing force is exerted onto the rear surface of the thin membrane  26  which in turn allow the liquid anesthetic stored in the rear end cavity  30  to flow through the needles  22 . The pull tab  58  is shown which is attached to the film cover  56  which maintains in place the gel topical anesthetic agent within the front-end cavity. 
     As to the manner of usage and operation of the present invention, the same should be apparent from the above description. Accordingly, no further discussion relating to the manner of usage and operation will be provided. 
     While a preferred embodiment of the anesthetic delivery tool has been described in detail, it should be apparent that modifications and variations thereto are possible, all of which fall within the true spirit and scope of the invention. With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size, materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. 
     With respect to the above description then, it is to be realized that the optimum dimensional relationships for the parts of the invention, to include variations in size materials, shape, form, function and manner of operation, assembly and use, are deemed readily apparent and obvious to one skilled in the art, and all equivalent relationships to those illustrated in the drawings and described in the specification are intended to be encompassed by the present invention. 
     Therefore, the foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention.