Ampoule-fixing holder for intraosseous anesthetic solution injection device and anesthetic solution injection device including the same

1 . An ampoule-fixing holder for an intraosseous anesthetic solution injection device, the ampoule-fixing holder comprising:

a cylindrical holder body comprising an open portion formed at a rear end thereof to allow an ampoule containing an anesthetic solution to be inserted thereinto or removed therefrom;

a head configured to enable mounting of an injection needle to a front end of the holder body;

a rotary body disposed between the head and the holder body to withstand rotational force and an axial load; and

a fixing member configured to firmly hold the ampoule inserted into the holder body to effectively transmit rotational force to the ampoule,

wherein the fixing member is implemented as an elastic rubber ring configured to be first fitted on the open portion of the holder body and then shifted to be mounted on an outer circumferential surface of the holder body,

wherein the holder body comprises a mounting groove formed in a middle portion thereof to a predetermined depth to allow the elastic rubber ring to be mounted therein and a plurality of slits formed in the holder body in a longitudinal direction of the holder body about a central axis of the holder body, and

wherein, when the elastic rubber ring is fitted on the open portion of the holder body, the holder body elastically contracts in a circumferential direction thereof to allow the elastic rubber ring to be fitted into the mounting groove,

wherein the fixing member comprises at least one protruding portion formed on an inner surface thereof so as to come into contact with a surface of the ampoule to transmit rotational force to the ampoule when the holder body is rotated, and

wherein the mounting groove comprises at least one insertion hole formed therein to allow the at least one protruding portion to pass therethrough and to come into contact with the surface of the ampoule.

2 . The ampoule-fixing holder according to claim 1 , wherein the at least one protruding portion comprises a plurality of protruding portions disposed so as to be spaced apart from each other at regular intervals,

wherein the at least one insertion hole comprises a plurality of insertion holes disposed so as to be spaced apart from each other at regular intervals, and

wherein the plurality of slits and the plurality of insertion holes are alternately formed in the outer circumferential surface of the holder body.

3 . The ampoule-fixing holder according to claim 1 , wherein the holder body comprises a first slanted portion and a second slanted portion formed in front of and behind the mounting groove, respectively, and

wherein each of the first slanted portion and the second slanted portion gradually increases in thickness toward the mounting groove so as to have a larger outer diameter than the rest of the holder body.

4 . The ampoule-fixing holder according to claim 3 , wherein the plurality of slits is formed in the holder body in the longitudinal direction of the holder body so as to cross the second slanted portion and the mounting groove.

5 . The ampoule-fixing holder according to claim 1 , further comprising a fixing-member holder configured to be fitted on an outer surface of the fixing member in order to hold the fixing member in the mounting groove in the holder body.

6 . The ampoule-fixing holder according to claim 1 , wherein the head is bonded to a front portion of the holder body using an adhesive.

7 . An anesthetic solution injection device comprising:

an ampoule containing an anesthetic solution;

the ampoule-fixing holder described in claim 1 , the ampoule-fixing holder being configured to fix the ampoule;

an injection needle mounted to one end of the ampoule-fixing holder; and

a handpiece comprising a pusher inserted into an opposite end of the ampoule-fixing holder to push and fix the ampoule inserted into the ampoule-fixing holder and a spring configured to push the ampoule-fixing holder mounted in the handpiece using resilient force at the opposite end of the ampoule-fixing holder.

8 . The anesthetic solution injection device according to claim 7 , wherein the handpiece comprises:

a motor configured to generate pressure to eject the anesthetic solution through the injection needle;

a user input unit configured to allow a user to input a command for control of operation of the handpiece;

a controller configured to control the motor in response to the command received from the user input unit; and

a battery configured to supply power to the user input unit.