Subcutaneous needle insertion mechanism
First Claim
1. A device for subcutaneous access adapted to insert a needle into an individual'"'"'s skin by effecting a relative movement between a surface of the skin and the needle, the device comprising:
- a device body, including a needle support, and the needle is fixedly held by the needle support in the device body;
a skin attachment plate, including an adhesive surface adapted for attachment to the skin, the skin attachment plate being placed between the device body and the skin, and the device body and the skin attachment plate being movable relative to one another by linear guideways, with one end of the linear guideways being fixedly connected to the skin attachment plate and another end of the linear guideways being movably connected to the device body; and
the linear guideways, the linear guideways including inner tubes connected to the skin attachment plate, the inner tubes being telescopically slidable in outer tubes that are connected to the device body, and the linear guideways being provided with retraction mechanisms, the retraction mechanisms being spring-type mechanisms arranged between the skin attachment plate and the movable end of the linear guideways and configured such that in a ready-to-use position, with the skin attachment plate spaced from the device body, the spring-type mechanisms are held pre-stressed by a withholding mechanism and, actuated by a release element, shoot into a relaxed state so that the device body with the fixedly held needle and the skin attachment plate move towards one another.
1 Assignment
0 Petitions
Accused Products
Abstract
A subcutaneous access device has a skin attachment plate coated with an adhesive layer. The skin attachment plate is moveably linked by a retraction mechanism to a needle support with fixedly positioned needles. In the ready-to-use position the skin attachment plate is spaced away from the needle support and covers the fixedly positioned needles. Subcutaneous insertion of the needles is effected by attachment of the skin attachment plate with the adhesive layer to the skin and releasing the retraction mechanism, thus triggering the pulling of the attached skin with high velocity against the tip of the needles.
-
Citations
20 Claims
-
1. A device for subcutaneous access adapted to insert a needle into an individual'"'"'s skin by effecting a relative movement between a surface of the skin and the needle, the device comprising:
-
a device body, including a needle support, and the needle is fixedly held by the needle support in the device body; a skin attachment plate, including an adhesive surface adapted for attachment to the skin, the skin attachment plate being placed between the device body and the skin, and the device body and the skin attachment plate being movable relative to one another by linear guideways, with one end of the linear guideways being fixedly connected to the skin attachment plate and another end of the linear guideways being movably connected to the device body; and the linear guideways, the linear guideways including inner tubes connected to the skin attachment plate, the inner tubes being telescopically slidable in outer tubes that are connected to the device body, and the linear guideways being provided with retraction mechanisms, the retraction mechanisms being spring-type mechanisms arranged between the skin attachment plate and the movable end of the linear guideways and configured such that in a ready-to-use position, with the skin attachment plate spaced from the device body, the spring-type mechanisms are held pre-stressed by a withholding mechanism and, actuated by a release element, shoot into a relaxed state so that the device body with the fixedly held needle and the skin attachment plate move towards one another. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification