# US 8,465,448 B2 · Devices for the administration of drugs and vaccines in the form of injectable needles > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,448 B2 - Document ID: US8465448B2 - Status: Granted - Kind: B2 - Application number: 12/867,957 - Filed: 2009-02-18 - Published: 2011-02-17 - Granted: 2013-06-18 - Earliest claimed: 2008-02-18 - Assignees: Azurebio, S.L. - Applicants: Arcadio Garcia De Castro Andrews - Inventors: Arcadio Garcia De Castro Andrews - Web page: https://patentgrep.com/patent/US8465448B2 ## CPC - A61M 37/0069: {Devices for implanting pellets, e.g. markers or solid medicaments (for introducing of radioactive sources for interstitial radiation therapy, i.e. brachytherapy A61N5/1027)} - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} ## Abstract The present disclosure refers to hand operated disposable devices for the administration of drugs, vaccines and other medicaments in the form of solid injectable needles. The devices incorporate mechanisms for the automatic retraction of the injection rod even when the user continues to exert pressure on the device. The devices can incorporate an injectable needle in a sheath or cartridge that facilitates its manufacture and manipulation. These injection devices can only be used once and their use results in a change of configuration that renders them non operational and prevents contact with parts that have been exposed to the patient's tissues. ## Claims ### Claim 1 An injector device for the injection of a solid injectable needle containing a medicament into animal or human tissues, the injection device comprising: an injection rod positioned and configured to inject the injectable needle into the tissues; an actuator configured to undergo direct manual compression so as to drive the injection rod; and means for causing automatic retraction of the injection rod upon reaching a point of maximum penetration, even under continued compression on the actuator, wherein the means for causing automatic retraction of the injection rod further comprises means for releasing a plunger from the actuator, rendering the injector device useless after one use. ### Claim 2 (depends on 1) The injector device according to claim 1, wherein the means for releasing the plunger comprises the actuator including tabs positioned and configured to push the plunger and means for causing the rotation of the plunger. ### Claim 3 (depends on 2) The injector device according to claim 2, wherein the means for causing the rotation of the plunger comprises tabs fixed to the plunger cooperating with tabs fixed to a body at an end of a path travelled by the plunger. ### Claim 4 (depends on 3) The injector device according to claim 3, wherein the means for causing the rotation of the plunger comprises axial guides deviated from the axial direction at an end of a path travelled by the plunger. ### Claim 5 (depends on 1) The injector device according to claim 1, further comprising a sheath positioned and configured to enclose the solid injectable needle containing the medicament. ### Claim 6 (depends on 5) The injector device according to claim 5, wherein the sheath further comprises septa positioned and configured to be broken during injection of the injectable needle. ### Claim 7 (depends on 1) The injector device according to claim 1, wherein the means for causing the automatic retraction of the injection rod comprises a spring connected to the plunger driven by the actuator. ### Claim 8 (depends on 1) The injector device according to claim 1, wherein the means for releasing the plunger comprises the actuator including rods positioned and configured to drive the plunger by actuating on tabs, the tabs being deformable upon cooperation with wedges located at an end of a path travelled by the plunger. ### Claim 9 (depends on 1) The injector device according to claim 1, wherein the means for releasing the plunger comprises the actuator including tabs positioned and configured to drive the plunger, the actuator being deformable upon cooperation with a conical protrusion located at an end of a path travelled by the plunger. ### Claim 10 (depends on 1) The injector device according to claim 1, wherein the injectable needle has a diameter:length ratio between 1:15 and 1:5, a diameter between 0.2 mm. and 1 mm., and a length between 1 mm. and 10 mm. ### Claim 11 (depends on 1) The injector device according to claim 1, wherein the injectable needle is soluble. ### Claim 12 (depends on 1) The injector device according to claim 1, wherein the injectable needle comprises calcium salts. ### Claim 13 (depends on 1) The injector device according to claim 1, further comprising a blocking tab positioned and configured to block movement of the actuator so as to prevent operation of the injector device until sufficient manual force is exerted on the actuator. ### Claim 14 An injector device for the injection of an injectable needle containing a medicament into animal or human tissue, the injection device comprising: an injection rod positioned and configured to inject the injectable needle into the tissues; an actuator configured to undergo manual compression so as to drive the injection rod; a retractor positioned and configured to retract automatically the injection rod upon reaching a point of maximum penetration, even under continued compression on the actuator; a plunger positioned and configured to be driven by the actuator; and the retractor comprising a releaser positioned and configured to release the plunger from the actuator, rendering the injector device useless after one use. ### Claim 15 (depends on 14) The injector device according to claim 14, wherein the releaser comprises the actuator including tabs positioned and configured to push the plunger, and a rotator positioned and configured to rotate the plunger. ### Claim 16 (depends on 15) The injector device according to claim 15, wherein the rotator comprises tabs fixed to the plunger and configured to cooperate with tabs fixed to a body at an end of a path travelled by the plunger. ### Claim 17 (depends on 15) The injector device according to claim 15, wherein the rotator comprises axial guides deviated from the axial direction at an end of a path travelled by the plunger. ### Claim 18 (depends on 14) The injector device according to claim 14, wherein the retractor comprises a spring connected to the plunger driven by the actuator. ### Claim 19 (depends on 14) The injector device according to claim 14, wherein the releaser comprises the actuator including rods positioned and configured to drive the plunger by actuating on tabs deformable upon cooperation with wedges located at an end of a travel path of the plunger. ### Claim 20 (depends on 14) The injector device according to claim 14, wherein the releaser comprises the actuator including tabs positioned and configured to drive the plunger, the actuator being deformable upon cooperation with a conical protrusion located at an end of a travel path of the plunger. ### Claim 21 (depends on 14) The injector device according to claim 14, further comprising a sheath positioned and configured to enclose the injectable needle. ### Claim 22 (depends on 14) The injector device according to claim 14, further comprising a blocking tab positioned and configured to block movement of the actuator so as to prevent operation of the injector device until sufficient manual force is exerted on the actuator.