Advanced anesthetic method

• US 6,139,529 A
• Filed: 06/04/1999
• Issued: 10/31/2000
• Est. Priority Date: 07/07/1998
• Status: Expired due to Term

• Current Assignee: Alceu Meibach Rosa Junior
• Original Assignee: Alceu Meibach Rosa Junior
• Inventors: Junior, Alceu Meibach Rosa
• Primary Examiner(s): YASKO JR, JOHN D
• Application Number:
  US09/325,908
• Time in Patent Office: 515 Days
• Field of Search: 604/131, 604/151, 604/187, 604/207, 604/30, 604/65, 604/66, 604/67, 604/500, 128/DIG. 1
• US Class Current: 604/131
• CPC Class Codes: A61C 19/08 combined with anaesthetising implements dental hypodermic syringes A61M5/00

Abstract

An advanced osseous or periosseous dental anesthetic method involving apparatus for motorized injection of anesthetic liquids at a low and extended volumetric rate. The anesthetic is injected at a low and extended volumetric rate adjacent or directly into the osseous without pain or danger to the surrounding tissue.

Claims

1. A method of administering a dental anesthetic, comprising:

(a) providing an injector device having a needle and a programmable dosage and flow rate;

(b) programming the flow rate of the injector device to a predetermined rate of about 0.15 ml/min;

(c) topically anesthetizing the tissue surface in the region of puncture and waiting a few seconds for its effect,

(d) injecting by hypodermic needle a few drops of anesthetic liquid in the gingival papilla, forming a slightly ischemic pouch,

(e) removing the needle and waiting a few seconds for the anesthetic to take effect,

(f) reinserting the needle slowly, over a period of about 40 seconds, while effecting a motor-controlled flow rate of about 0.15 ml/minute of introduction of anesthetic liquid into the tissue, such that the anesthetic liquid precedes and has at least partial effect in the tissue in advance of penetration thereof by said needle,

(g) contacting, and penetrating the alveolar crest with said needle,

(h) re-programming the programmable injector for a flow rate of about 0.3 ml/min, and

(i) thereafter injecting about 0.6 ml to about 0.9 ml of the anesthetic, and liquid by motorized expulsion from said needle, at a constant controlled rate of about 0.3 ml per minute.

2. The method of claim 1 wherein said steps of reinserting the needle and of contacting and penetrating the alveolar crest further comprise inserting the needle substantially through a center of a vertical line interconnecting an apex and a base of a triangle of a gingival papilla.

3. A method of administering a dental anesthetic, comprising:

(a) providing an injector device having a needle and a programmable dosage and flow rate;

(b) programming the flow rate of the injector device to a predetermined rate of about 0.15 ml/minute;

(c) applying a topical anesthetic to the target area of mucous membrane of a patient adjacent a tooth being treated;

(d) using the programmable injector to introduce a superficial injection of anesthetic in the topically anesthetized mucous membrane;

(e) stopping the injection and removing the needle;

(f) pausing for a period of about 15 seconds;

(g) inserting the needle through the superficially treated area of the mucous membrane and restarting the injection;

(h) inserting the needle, at a steady rate into the tissue below the mucous;

(i) upon a sign from the patient indicating discomfort, pausing the insertion of the needle and pausing the injection of the anesthetic solution for a period of about 3 seconds;

(j) inserting the needle to a region adjacent a radicular apex;

(k) re-programming the flow rate of the programmable injector to a flow rate of about 0.3 ml/min;

(l) maintaining the needle position and injector flow rate until a predetermined volume of anesthetic solution has been injected; and

(m) withdrawing the needle.

4. A method as in claim 3, wherein said step (h) further comprises inserting the needle, at a steady rate, into the tissue below the mucous membrane at a 45 degree angle with respect to a long axis of the tooth.

5. A method as in claim 4, further comprising upon contact of the needle with a periosteum, repositioning the needle to be parallel to the long axis of the tooth.

6. An advanced subperiosteal anesthetic technique, comprising:

(a) applying a topical anesthetic to the target area of mucous membrane of a patient adjacent a tooth being treated;

(b) setting a programmable injector having a needle to a flow rate of about 0.15 ml/min;

(c) using the programmable injector to introduce a superficial injection of anesthetic in the topically anesthetized mucous membrane;

(d) stopping the injection and removing the needle;

(e) pausing for a period of about 15 seconds;

(f) communicating that the patient may experience a slight pressure during the remainder of the treatment;

(g) inserting the needle through the superficially treated area of the mucous membrane and restarting the injection;

(h) inserting the needle, at a steady rate, into the tissue below the mucous membrane at a 45 degree angle with respect to a long axis of the tooth;

(i) periodically pausing the insertion of the needle and pausing the injection of the anesthetic solution for a period of about 3 seconds;

(j) upon contact of the needle with a periosteum, repositioning the needle to be parallel to the long axis of the tooth;

(k) inserting the needle to a region adjacent a radicular apex;

(l) re-programming the flow rate of the programmable injector to a flow rate of about 0.3 ml/min;

(m) maintaining the needle position and injector flow rate until a predetermined volume of anesthetic solution has been injected; and

(n) withdrawing the needle.