Anesthesia in bone joints

摘要

A medical needle, kit, and pharmacological composition of matter comprising a local anesthetic pertaining to inserting a needle percutaneously in a patient is disclosed. A method is disclosed with the needle having a leading apex that is dulled to restrict penetration through articular cartilage, advancing the needle leading apex into a bone joint and stopping said needle leading apex short of substantially penetrating bone joint articular cartilage, and injecting through the needle lumen a pharmacological composition of matter comprising a local anesthetic and out of said opening and into the bone joint to contribute to the anesthetizing of nerves near said bone joint.

主权项

1. A method for anesthetizing nerves, comprising the acts of:
inserting a needle percutaneously in a patient, said needle having a lumen with a stylet therein, said stylet or said needle and said stylet collectively form a leading apex that is dulled to restrict penetration through articular cartilage, said needle further having said lumen extending from a proximal end to at least one opening at or near a distal end of said needle, said needle further having during insertion blocking means comprising a distal portion of said stylet at said needle opening for blocking cartilage and/or bone tissue from clogging said opening, said needle further comprises attachment means at its proximal end, said attachment means configured to hold said stylet in position during insertion, and wherein during insertion said needle is axially rotated to cause deflection to aid in traversal of the sacroiliac joint; advancing said needle leading apex into the sacroiliac joint lumen between layers of articular cartilage until palpation indicates contact with articular cartilage or bone; withdrawing said stylet while maintaining said opening in the sacroiliac joint lumen; and injecting through said lumen a pharmacological composition of matter comprising a local anesthetic and out of said opening and into the sacroiliac joint to contribute to the anesthetizing of nerves near the sacroiliac joint, wherein said pharmacological composition passes through the opening at or near the distal end of the needle.