Instrument and method for delivery of anaesthetic drugs
First Claim
1. A medical-surgical instrument comprising:
- a. a needle having a central bore for providing access to a nerve of a patient and a needle hub disposed about a proximal end of the needle;
b. a catheter for providing fluid flow access to and electrically stimulating the nerve of the patient, the catheter capable of being inserted into the patient through the needle; and
c. a catheter lock attached to the needle hub for selectively holding said catheter stationary with respect to said needle or allowing said catheter to slide through said catheter lock and said needle, said catheter lock comprising a bore and an actuating portion, the catheter being inserted through the bore of the catheter lock and the needle central bore such that actuation of the actuating portion of the catheter lock causes the catheter lock to frictionally hold the catheter in place with respect to the catheter lock, the catheter lock frictionally holding the catheter at one of a plurality of locations along the length of the catheter.
10 Assignments
0 Petitions
Accused Products
Abstract
A needle and catheter system, including components, is provided such that the position of an stimulating needle may be identified after insertion into the body of a patient by electrically stimulating and thus locating a specific nerve. Positioning of the stimulating needle while simultaneously controlling and monitoring the electrical impulses applied therethrough is made possible by a control device and monitor integral with the stimulating needle. When a specific nerve is located, the catheter is inserted through the needle to a point slightly beyond the distal tip of the needle. The catheter tip may then be manipulated and the optimum position for the catheter tip determined by applying an electrical impulse through the helical wire and/or the ribbon support wire to the proximal tip catheter, this electrical stimulation being utilized in determining the specific location of the catheter tip within the nerve. Once properly located, or at any time relative movement between the catheter and needle is not desirable, the catheter can be locked into position with a catheter lock which may be part of the stimulating needle hub. A catheter adapter is utilized to allow easy access to the catheter and introduction of fluid into the nerve of the patient through the catheter tip.
68 Citations
42 Claims
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1. A medical-surgical instrument comprising:
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a. a needle having a central bore for providing access to a nerve of a patient and a needle hub disposed about a proximal end of the needle; b. a catheter for providing fluid flow access to and electrically stimulating the nerve of the patient, the catheter capable of being inserted into the patient through the needle; and c. a catheter lock attached to the needle hub for selectively holding said catheter stationary with respect to said needle or allowing said catheter to slide through said catheter lock and said needle, said catheter lock comprising a bore and an actuating portion, the catheter being inserted through the bore of the catheter lock and the needle central bore such that actuation of the actuating portion of the catheter lock causes the catheter lock to frictionally hold the catheter in place with respect to the catheter lock, the catheter lock frictionally holding the catheter at one of a plurality of locations along the length of the catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A medical-surgical instrument comprising:
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a. a needle having a central bore and a hub disposed about a proximal end of the needle; b. a catheter having a proximal end, a distal end, an electrically conducting distal tip, and a lumen for allowing fluid flow through the catheter, the catheter adapted to conduct electricity from the proximal end of the catheter to the distal tip of the catheter; c. a catheter lock comprising a bore and an actuating portion; and d. the catheter being inserted through the bore of the catheter lock and the needle central bore such that actuation of the actuating portion of the catheter lock causes the catheter lock to frictionally hold the catheter in place with respect to the catheter lock, the catheter lock frictionally holding the catheter at one of a plurality of locations along the length of the catheter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. A medical-surgical instrument comprising:
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a. a needle having a central bore and a hub comprising a distal end disposed about a proximal end of the needle, the hub further comprising a proximal end; b. a catheter having a proximal end, a distal end and an electrically conducting distal tip, the catheter adapted to conduct electricity from the proximal end of the catheter to the distal tip of the catheter, the catheter further comprising a lumen permitting fluid flow through the catheter; c. a catheter lock comprising a bore and an actuating portion, the catheter lock being attached to the proximal end of the needle hub in such a way that the catheter lock is capable of easily being unattached from the needle hub; and d. the catheter being inserted through the bore of the catheter lock and the needle central bore such that actuation of the actuating portion of the catheter lock causes the catheter lock to frictionally hold, at one of a plurality of locations along the length of the catheter, the catheter in place with respect to the catheter lock. - View Dependent Claims (42)
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Specification