SYSTEM AND METHOD OF DELIVERING LOCAL ANESTHESIA
First Claim
1. A method for delivering anesthesia including:
- providing a needle with a notch, a tip and a central bore passing through the needle and creating a fluid flow path between the notch and the tip, wherein the needle is formed of a material capable of conducting an electrical charge;
providing a catheter having a proximal end and a distal end disposed slidingly about the needle such that an annular space is formed between at least a portion of the needle and the catheter and the tip of the needle extends out of the distal end of the catheter;
wherein the needle and catheter form a catheter assembly;
inserting the catheter assembly into tissue to be anesthetized;
delivering an electrical charge to the needle, whereby the tissue in contact with the tip receives the charge; and
delivering anesthesia into the annular space such that anesthesia flows through the annular space, through the notch, through the central bore and out the tip of the needle.
1 Assignment
0 Petitions
Accused Products
Abstract
A catheter and introducer needle assembly is provided including a catheter adapter at its proximal end. The catheter adapter includes a side port in fluid communication with the catheter and a septum located in the proximal end of the catheter adapter proximal of the side port. The introducer needle is connected at its proximal end to a needle hub and includes at least one notch in communication with the introducer needle lumen. The notch allows blood to flow into the open distal end of the needle and through the notch into the catheter lumen (specifically, the annular space between the outside of the introducer needle and the inside of the catheter and catheter adapter). Thereafter, the blood can flow through the annular space and then through the side port and extension tube that extends from the catheter adapter.
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Citations
14 Claims
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1. A method for delivering anesthesia including:
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providing a needle with a notch, a tip and a central bore passing through the needle and creating a fluid flow path between the notch and the tip, wherein the needle is formed of a material capable of conducting an electrical charge;
providing a catheter having a proximal end and a distal end disposed slidingly about the needle such that an annular space is formed between at least a portion of the needle and the catheter and the tip of the needle extends out of the distal end of the catheter;
wherein the needle and catheter form a catheter assembly;
inserting the catheter assembly into tissue to be anesthetized;
delivering an electrical charge to the needle, whereby the tissue in contact with the tip receives the charge; and
delivering anesthesia into the annular space such that anesthesia flows through the annular space, through the notch, through the central bore and out the tip of the needle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for delivering anesthesia including:
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providing a needle formed of a material capable of conducting an electrical charge;
providing a catheter having a proximal end and a distal end slidingly disposed about the needle such that the tip of the needle extends out of the distal end of the catheter;
providing a closed system access in fluid communication with the catheter;
wherein the needle and catheter form a catheter assembly;
inserting the catheter assembly into tissue to be anesthetized;
delivering an electrical charge to the needle, whereby the tissue in contact with the tip receives the charge delivering fluid to the catheter via the closed system access port.
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13. A method for delivering anesthesia including:
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providing a needle with a notch, a tip and a central bore passing through the needle and operably connecting the notch and the tip;
providing a catheter having a proximal end and a distal end disposed slidingly about the needle such that an annular space is formed between at least a portion of the needle and the catheter and the tip of the needle extends out of the distal end of the catheter;
wherein the needle and catheter form a catheter assembly;
inserting the catheter assembly into tissue to be anesthetized; and
delivering anesthesia into the annular space such that anesthesia flows through the annular space, through the notch, through the central bore and out the tip of the needle.
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14. A method for delivering anesthesia including:
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providing a needle with a notch, a tip and a central bore passing through the needle and creating a fluid flow path between the notch and the tip, wherein the needle is formed of a material capable of conducting an electrical charge;
providing a catheter having a proximal end and a distal end disposed slidingly about the needle such that an annular space is formed between at least a portion of the needle and the catheter and the tip of the needle extends out of the distal end of the catheter and the notch is disposed within the catheter;
wherein the catheter electrically insulates the needle excluding the tip;
wherein the needle and catheter form a catheter assembly;
inserting the catheter assembly into tissue to be anesthetized;
delivering an electrical charge to the needle, whereby the peripheral nerve tissue near the tip receives the charge, thereby exciting the enervated tissue, causing a response and thereby identifying the location of the nerve; and
delivering anesthesia into the annular space such that anesthesia flows through the annular space, through the notch, through the central bore and out the tip of the needle.
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Specification