AUTOMATIC APPLICATOR FOR LIQUID PHARMACEUTICAL PREPARATIONS, PARTICULARLY FOR INSULIN

• US 20120209208A1
• Filed: 04/28/2012
• Published: 08/16/2012
• Est. Priority Date: 10/30/2009
• Status: Active Grant

• Current Assignee: Nemera Szczecin Spolka Z Ograniczona Odpowiedzialnoscia
• Original Assignee: Copernicus Sp. Z o.o.
• Inventors: Stefanski, Adam
• Granted Patent: US 9,566,386 B2
• Time in Patent Office: Days
• US Class Current: 604/189
• CPC Class Codes: A61M 2005/202 cocking means, e.g. to bias the main drive spring of an injector
• CPC Class Codes: A61M 2005/2407 from the rear
• CPC Class Codes: A61M 2005/2488 via rotation, e.g. threads or bayonet
• CPC Class Codes: A61M 2005/3115 spring-assisted
• CPC Class Codes: A61M 5/20 Automatic syringes, e.g. with automatically actuated piston rod, with automatic needle injection, filling automatically A61M5/142 , A61M5/46 take precedence; hypodermic projectiles F42B12/54
• CPC Class Codes: A61M 5/24 Ampoule syringes, i.e. syringes with needle for use in combination with replaceable ampoules or carpules, e.g. automatic ampoules or carpules A61J1/06
• CPC Class Codes: A61M 5/31535 Means improving security or handling thereof, e.g. blocking means, means preventing insufficient dosing, means allowing correction of overset dose
• CPC Class Codes: A61M 5/31543 piston rod reset means, i.e. means for causing or facilitating retraction of piston rod to its starting position during cartridge change
• CPC Class Codes: A61M 5/31551 including axial movement of dose setting member
• CPC Class Codes: A61M 5/31553 without axial movement of dose setting member
• CPC Class Codes: A61M 5/31555 by purely axial movement of dose setting member, e.g. during setting or filling of a syringe
• CPC Class Codes: A61M 5/31583 based on rotational translation, i.e. movement of piston rod is caused by relative rotation between the user activated actuator and the piston rod

Abstract

An automatic applicator for liquid pharmaceutical preparations, particularly for multiple injection application of set doses of a medicine from an exchangeable container is provided. The automatic applicator includes a body housing connected to a housing of an exchangeable container with a medicine having a plunger, the said plunger being displaced only linearly by an integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger, driven via a double action clutch, by a tensioning spring situated in the body housing, the spring tensioned by a rotary hand-dose-setting ring via the double action clutch, wherein the driving unit is activated by a trigger unit and a dose is indicated by an indicating arrangement. The automatic applicator further includes at least one block key placed in an upper part of a ratchet barrel, collaborating with at least one key placed in an internal part of the body housing.

Claims

1. An automatic applicator for liquid pharmaceutical preparations, particularly for insulin, more particularly for multiple injection application of set doses of a medicine from an exchangeable container, comprising a body housing connected to a housing of an exchangeable container with a medicine, particularly insulin, having a plunger, suitable for expelling the medicine, the plunger being displaced only linearly by an integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger, driven via a double action clutch, by a tensioning spring situated in the body housing, the spring tensioned by a rotary hand-dose-setting ring via the double action clutch, wherein the driving unit is activated by a trigger unit and a dose is indicated by an indicating arrangement, the body housing comprising at least one block key placed in an upper part of a ratchet barrel, collaborating with at least one key placed in an internal part of the body housing.

2. The automatic applicator according to claim 1 further comprising two block keys placed directly on a circumferential surface of the ratchet barrel, collaborating with two keys on the internal part of a cylindrical surface of the body housing, placed above an inspection window.

3. The automatic applicator according to claim 2, wherein the indicating arrangement comprises a scale deposited linearly on a cylindrical part of the ratchet barrel under the block keys and the inspection window.

4. The automatic applicator according to claim 1, wherein the integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger, comprises a nut bearingly mounted in a seat element.

5. The automatic applicator according to claim 3, wherein the nut is bearingly mounted in the seat element by a ball bearing.

6. The automatic applicator according to claim 1, wherein the integrated driving unit, suitable for immobilizing, driving, leading linearly and blocking rotation of the plunger comprises a plunger block guide and a driving nut.

7. The automatic applicator according to claim 6, wherein the plunger block guide is blocked in a toothed ring of a seat element, urged by the housing of the exchangeable container.

8. The automatic applicator according to claim 1, wherein the tensioning spring is a twisted spring.

9. The automatic applicator according to claim 1, wherein the tensioning spring is placed directly under the trigger unit.