Partial door closure prevention spring

Patent metadata

Field	Value
Publication number	US-12357767-B2
Application number	US-202318211061-A
Country	US
Kind code	B2
Filing date	Jun 16, 2023
Priority date	Aug 1, 2016
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

A method for visually indicating that a door of a drug delivery device is open is described. A closing force to move the door is received. Then, it is detected that the door is not closed. A biasing element pushes the door to a perceptibly open position with an opening force when the door reaches the last 30 degrees of rotation of toward closure or when the door reaches the last 30% of range of movement during the rotation of the door. The perceptibly open position of the door is indicated relative to a drug delivery device housing.

First claim

What is claimed is:

1. A method for visually indicating that a door of a medical injector device is open, the method comprising:
applying a closing force, which is greater than an opening force exerted on the door by a biasing element, to the door to move the door from a first position towards a closed position;
stopping the applying of the closing force to the door, wherein the door, when the closing force is stopped, is at a second position, which is between the closed position and a last 30 degrees of rotation towards the closed position; and
moving the door, as a result of stopping the applying of the closing force with the door at the second position and via the opening force exerted by the biasing element, from the second position to a perceptibly open position that visually indicates that the door is open, wherein:
the perceptibly open position of the door is less than a fully opened position of the door,
the fully opened position of the door is greater than a 30 degree rotation away from the closed position of the door, and
the opening force is exerted on the door by the biasing element only when the door reaches the last 30 degrees of rotation towards the closed position.

2. The method of claim 1 , wherein the perceptibly open position of the door has at least one gap between the door and a housing of the medical injector device.

3. The method of claim 1 , wherein moving the door to the perceptibly open position comprises pushing the door to protrude at least 4 mm from a housing of the medical injector device.

4. The method of claim 1 , wherein the biasing element is a deformable elastic element.

5. The method of claim 1 , wherein the biasing element is a torsion spring.

6. The method of claim 1 , wherein the door, when closed, is locked to a housing of the medical injector device.

7. A method for visually indicating that a door of a medical injector device is open, the method comprising:
applying a closing force, which is greater than an opening force exerted on the door by a biasing element, to the door to move the door from a first position towards a closed position;
stopping the applying of the closing force to the door, wherein the door, when the closing force is stopped, is at a second position, which is between the closed position and a last 30 degrees of a range of movement of the door; and
moving the door, as a result of stopping the applying of the closing force with the door at the second position and via the opening force exerted by the biasing element, from the second position to a perceptibly open position that visually indicates that the door is open, wherein:
the perceptibly open position of the door is less than a fully opened position of the door,
the fully opened position of the door is 100 degrees of the range of movement of the door, and
the opening force is exerted on the door by the biasing element only when the door reaches the last 30 degrees of the range of movement towards the closed position.

8. The method of claim 7 , wherein the perceptibly open position of the door comprises at least one gap between the door and a housing of the medical injector device.

9. The method of claim 7 , wherein moving the door to the perceptibly open position comprises moving the door to protrude at least 4 mm from a housing of the medical injector device.

10. The method of claim 7 , wherein the biasing element is a deformable elastic element.

11. The method of claim 7 , wherein the biasing element is a torsion spring.

12. The method of claim 7 , wherein the door, when closed, is locked to a housing of the medical injector device.

13. The method of claim 1 , further comprising inserting a container containing a medicament into the medical injector device when the door is in the fully opened position.

14. The method of claim 13 , wherein the container containing the medicament is a cartridge containing the medicament.

15. The method of claim 1 , further comprising injecting a medicament using a motor within the medical injector device when the door is closed.

16. The method of claim 7 , further comprising inserting a container containing a medicament into the medical injector device when the door is in the fully opened position.

17. The method of claim 16 , wherein the container containing the medicament is a cartridge containing the medicament.

18. The method of claim 7 , further comprising injecting a medicament using a motor within the medical injector device when the door is closed.

Assignees

• West Pharma Services Il Ltd

Inventors

• Barchen Lior
• Bar-El Yossi

Classifications

• E05B65/00

  Locks {or fastenings} for special use · CPC title

• A61M2209/06

  Packaging for specific medical equipment · CPC title

• A61M5/14 Primary

  Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor · CPC title

• A61M2039/268

  wherein the stem portion is moved for opening and closing the valve, e.g. by translation, rotation · CPC title

• A61M39/12

  for joining a flexible tube to a rigid attachment · CPC title