COMBINED IRRIGATOR, INJECTOR AND EVACUATOR

• US 3,807,048 A
• Filed: 01/03/1972
• Issued: 04/30/1974
• Est. Priority Date: 01/03/1972
• Status: Expired due to Term

• Current Assignee: Hills Family Preservation Trust
• Original Assignee: Oscar Malmin
• Inventors: Malmin, Oscar
• Primary Examiner(s): Peshock, Robert
• Application Number:
  US05/214,602
• Time in Patent Office: 848 Days
• Field of Search: 32/4R,60,22,57
• US Class Current: 433/81
• CPC Class Codes: A61C 17/0208 combined with means providing suction A61C17/0211 takes precedence

Abstract

A dental irrigator and injector for utilization in root canal therapy designed to be operated by one hand and which has a plurality of uses, both dental and medical. The instrument includes a handgrip portion, a body which is capable of receiving a disposable syringe or carpule, and means for actuating the syringe or carpule to force fluids contained therein into a bore passing through the body. The opposed end of the body contains a barrel, with or without an extension, and a needle, all of which have coaxial communicating through bores so that the irrigating or injecting material may be forced out of the medicator dental ampule, commonly called a '"'"''"'"''"'"''"'"'carpule,'"'"''"'"''"'"''"'"' or syringe through the bores, and out through the needle. The handgrip portion also contains a through bore, valving means and means for attachment to a vacuum source so that by moving of the valving means, either the bore communicating with the syringe or carpule is opened and the bore leading to the vacuum source is closed or vice-versa depending upon the particular operation desired.

Claims

1. A dental injection and evacuation instrument for use endontics with a vacuum source and a fluid-containing ampule having a self-contained plunger, comprising:

A. an elongate body having 1. an ampule-receiving bore in one end of said body and 2. a through central bore interconnecting said ampule-receiving bore and the opposed end of said body;

B. a handgrip 1. secured to said body 2. and having a through bore therein that interconnects with said through central bore of said body between said opposed end of said body and said ampule-receiving bore 3. and adapted to be connected to said vacuum source;

C. valve means carried by said body and said handgrip and including an elongated body received in said handgrip and a valve resealably received on the inboard end of body and projecting into the point of interconnection of said central bore of said body and said bore of said handgrip for selectively closing off said bore in said handgrip and opening said bore in said body; and

D. depressor means telescopically carried by onE end of said body for forcing fluid from said ampule into said through central bore in said body and having contact means adapted to contact the plunger of said ampule.

2. a through central bore interconnecting said ampule-receiving bore and the opposed end of said body;

B. a handgrip

3. The instrument of claim 1 further characterized by the presence of a needle releasably carried by said opposed end of said body and having a through central bore in coaxial alignment with said through central bore of said body.

4. The instrument of claim 1 further characterized by the presence of a barrel having one end releasably attached to said opposed end of said body and having a through bore in coaxial alignment with said through central bore of said body.

5. The instrument of claim 4 further characterized by the presence of a needle releasably attached to the opposed end of said barrel and having a through bore in coaxial alignment with said through central bore of said body.

6. The instrument of claim 4 further characterized by the presence of an extension barrel having one end releasably attached to the opposed end of said barrel and having a through bore in coaxial alignment with said central bore of said barrel.

7. The instrument of claim 6 further characterized by the presence of a needle releasably attached to the opposed end of said extension barrel and having a through bore in coaxial alignment with said through bore of said extension barrel.

8. A Dental injection and evacuation instrument for use with a vacuum source and a fluid-containing ampule, comprising;

A. an elongate body having

9. The instrument of claim 8 further characterized by;

A. said body of said valve means being rotatably received in said handgrip;

B. an operating handle carried on the opposed projecting end of said body.

10. The instrument of claim 9 wherein said depressor means include A. a hollow sleeve having

11. The instrument of claim 10 further characterized by the presence of means disposed in said central bore of said body and adapted to puncture the opposed end of said ampule.

12. The instrument of claim 10 further characterized by the presence of locking means carried by said cap of said plunger and said sleeve for releasably interconnecting said plunger and said sleeve.

13. The instrument of claim 9 further characterized by the presence of a needle releasably carried by said opposed end of said body and having a through central bore in coaxial alignment with said through central bore of said body.

14. The instrument of claim 9 further characterized by the presence of a barrel having one end releasably atTached to said opposed end of said body and having a through bore in coaxial alignment with said through central bore of said body.

15. The instrument of claim 14 further characterized by the presence of a needle releasably attached to the opposed end of said barrel and having a through bore in coaxial alignment with said through central bore of said body.

16. The instrument of claim 14 further characterized by the presence of an extension barrel having one end releasably attached to the opposed end of said barrel and having a through bore in coaxial alignment with said central bore of said barrel.

17. The instrument of claim 16 further characterized by the presence of a needle releasably attached to the opposed end of said extension barrel and having a through bore in coaxial alignment with said through bore of said extension barrel.

18. The instrument of claim 1 further characterized by;

A. said body of said valve means being rotatably received in said handgrip;

B. An operating handle carried on the opposed projecting end of said body.