초록 ▼

A biopsy sampling system and method for aspirating bone marrow and bone cores from a patient with minimal or no perceived pain to the patient. The system includes a bone aspiration needle assembly having a handle and an electrically conductive needle shaft and an electrical nerve stimulator (ENS) wh

A biopsy sampling system and method for aspirating bone marrow and bone cores from a patient with minimal or no perceived pain to the patient. The system includes a bone aspiration needle assembly having a handle and an electrically conductive needle shaft and an electrical nerve stimulator (ENS) which supplies a current of adjustable intensity to the needle shaft. Thus, when the aspirating needle is inserted into the bone marrow cavity of the patient, the stimulator is activated to anesthetize the nerves in the vicinity of the aspiration permitting the extraction to commence with little or no increased pain to the patient. A nonconducting insulating shaft is also disclosed to be placed on the needle shaft in order direct the ENS current to the area of the shaft that can most efficiently anesthetize the pain conducting nerves, i.e. to the tip of the needle shaft.

대표청구항 ▼

[ We claim:] [1.] A biopsy sampling system for attenuating the pain associated with the extraction of a sample of at least one of bone marrow and bone core from a patient through the patient's skin, soft tissue and bone, the system comprising:an electrically conductive biopsy needle configured to ex

[ We claim:] [1.] A biopsy sampling system for attenuating the pain associated with the extraction of a sample of at least one of bone marrow and bone core from a patient through the patient's skin, soft tissue and bone, the system comprising:an electrically conductive biopsy needle configured to extract the sample; andan electrical nerve stimulator associated with the needle and configured to penetrate bone and to supply electrical stimulation to the patient along the needle so as to attenuate the pain during the extraction.