System for attenuating pain during bone marrow aspiration and method
First 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; and
an 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.
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Accused Products
Abstract
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.
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Citations
17 Claims
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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:
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an electrically conductive biopsy needle configured to extract the sample; and an 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for reducing the pain associated with the extraction of a sample of at least one of a bone marrow specimen and bone core specimen from a patient, wherein the system includes an electrically conductive biopsy needle that extracts the sample and an electrical nerve stimulator associated with the needle, the stimulator being further configured to supply electrical stimulation to the patient along the needle so as to attenuate the pain during the extraction, the method including:
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penetrating the biopsy needle into the bone within the patient; activating the electrical nerve stimulator so as to supply stimulation to the patient along the needle for a predetermined amount of time; extracting the sample from the patient into the biopsy needle assembly; and deactivating the electrical nerve stimulator. - View Dependent Claims (12, 13, 14, 15, 16)
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17. 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:
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an electrically conductive biopsy needle configured to extract the sample; and an electrical nerve stimulator associated with the needle and configured to supply electrical stimulation to the patient along the needle so as to attenuate the pain during the extraction; wherein the electrical nerve stimulator includes an adjustable energy delivery source, a first electrode associated with the needle and a second electrode having a free end that removably engages the skin of the patient.
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Specification