초록 ▼

Apparatus and method for catheterized delivery or infusion of medication and anaesthesia are disclosed. The perforating catheter is first used to perforate the periodontal ligament and/or the cortical plate of bone tissue, and is then left in place and used as a catheter for insertion of a hypodermi

Apparatus and method for catheterized delivery or infusion of medication and anaesthesia are disclosed. The perforating catheter is first used to perforate the periodontal ligament and/or the cortical plate of bone tissue, and is then left in place and used as a catheter for insertion of a hypodermic needle of smaller gauge to deliver medication or anaesthesia to a target area. The perforator is a bevelled needle for drilling into the ligament or bone tissue. For drilling, the device comprises an adaptor which transmits the rotational movement from a dental hand piece to the bevelled needle. A cap is also included for protecting the bevelled needle during storage of the device. The adaptor may have a rod which extends axially into the bevelled needle when the device is assembled for drilling. The rod is used to prevent the debris resulting from drilling from blocking the passage in the bevelled needle. As well, the rod reinforces the needle and maintains the alignment between the perforator and the adaptor for improved drilling efficiency.

대표청구항 ▼

1. A device for perforating the periodontal ligaments, cortical plate or small bones, and for injecting substances at a predetermined site, comprising:a perforator for drilling a hole into the ligament, bone or tissue, wherein said perforator is provided with a drilling needle extending from an end

1. A device for perforating the periodontal ligaments, cortical plate or small bones, and for injecting substances at a predetermined site, comprising:a perforator for drilling a hole into the ligament, bone or tissue, wherein said perforator is provided with a drilling needle extending from an end thereof, the drilling needle having an inner passage adapted to remain in the hole for directing a hypodermic needle when inserted in the perforator toward the predetermined site, the drilling needle having a uniform outer diameter and a smooth non-varying outer surface allowing removal once inserted into the periodontal ligaments, cortical plate or small bones by withdrawing the needle by pulling backwards along a line defined by a longitudinal axis of the inserted drilling needle; and an adapter for coupling to an end of the perforator and for latching a latching-type motorized dental handpiece thereto and for transmitting rotational movement from the motorized dental handpiece to said perforator, the adapter for coupling with the perforator in a locking engagement such that rotational motion imparted to the adapter, rotates the perforator when the adapter is coupled with the perforator, the adapter having an upper end having a driving shank extending along a rotational axis for removably engaging the motorized dental handpiece, the adapter having a rod sized to be accommodated within the perforator and sized to fit into a passage in said drilling needle at a lower end thereof.