초록 ▼

The present invention provides devices for depositing objects into tissue of an animal. The devices include a cannula having a proximal end and an opposite distal end insertable into tissue and. defining an exit aperture. The cannula has a sidewall between the distal and proximal ends and defines a

The present invention provides devices for depositing objects into tissue of an animal. The devices include a cannula having a proximal end and an opposite distal end insertable into tissue and. defining an exit aperture. The cannula has a sidewall between the distal and proximal ends and defines a passageway in communication with the exit aperture. A distal retaining tab extends from an inner surface of the cannula and is positioned across at least a portion of the passageway adjacent the exit aperture. The distal tab has a first closed position blocking the passageway and a second open position wherein the tab is urged towards the sidewall to allow an object to pass. The tab is resilient to return to the first position after the object passes. the tab. In some embodiments, the invention also includes a proximal retaining tab adjacent the proximal end of the cannula and positionable to block a portion of the passageway. The invention also a stylet that is slidable within the passageway to urge the objects out through the exit aperture.

대표청구항 ▼

1. A device for depositing objects into tissue of an animal, comprising:a cannula having a proximal end and an opposite distal end insertable into tissue and defining an exit aperture, said cannula having a sidewall between said proximal end and distal end and defining a passageway in communication

1. A device for depositing objects into tissue of an animal, comprising:a cannula having a proximal end and an opposite distal end insertable into tissue and defining an exit aperture, said cannula having a sidewall between said proximal end and distal end and defining a passageway in communication with said exit aperture for the objects; and a distal retaining tab formed from a cutout defined in said sidewall, said distal retaining tab having a first end integral with said sidewall and an opposite distal end free from said sidewall, said distal retaining tab having a first closed position blocking at least a portion of said passageway and a second open position wherein said opposite end of said distal retaining tab is urged towards said sidewall to allow an object to pass.