Needle electrode assembly
First Claim
1. A needle electrode assembly including a holder for releasably holding a needle electrode, the assembly comprising:
- an electrical connector;
an electrical lead having one end connected to said electrical connector; and
a needle electrode holder including;
a body;
a base slidably mounted in the body; and
a chuck formed of an electrically conducting material having at least two jaws mounted in one end of the body and mechanically coupled to the base and electrically connected to the other end of said electrical lead, the jaws forming an opening sized to receive and releasably hold a needle electrode, the chuck being movable from an engaged position in which the jaws engage and hold the needle electrode to a released position in which the needle electrode may move freely out of the chuck when the base is slidably moved with respect to the body.
1 Assignment
0 Petitions
Accused Products
Abstract
A holder (16) for releasably holding needle electrodes (18). The holder (16) includes a body (26) having a base slidably mounted within the body. Depressing the base into the body (26) releases a gripping assembly (50) located within the body (26) allowing a needle electrode (18) inserted into the holder to be removed. Releasing the base (24) causes the gripping assembly to engage a needle electrode inserted into the holder. The gripping mechanism (50) includes a chuck (60) having an opening sized to receive the needle electrode (18). The chuck engages a ferrule (73) that depresses the jaws (70) of the chuck (68) radially inwardly with respect to each other to reduce the size of the opening in the chuck thus holding a needle electrode (18) inserted into the chuck (68).
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Citations
19 Claims
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1. A needle electrode assembly including a holder for releasably holding a needle electrode, the assembly comprising:
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an electrical connector; an electrical lead having one end connected to said electrical connector; and a needle electrode holder including; a body; a base slidably mounted in the body; and a chuck formed of an electrically conducting material having at least two jaws mounted in one end of the body and mechanically coupled to the base and electrically connected to the other end of said electrical lead, the jaws forming an opening sized to receive and releasably hold a needle electrode, the chuck being movable from an engaged position in which the jaws engage and hold the needle electrode to a released position in which the needle electrode may move freely out of the chuck when the base is slidably moved with respect to the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A reusable needle electrode assembly comprising:
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an electrical lead; an electrical connector attached to one end of the electrical lead, the electrical connector being used to electrically attach the needle electrode assembly to monitoring equipment; and a needle electrode holder attached to an opposite end of the electrical lead, the needle electrode holder including; a body having opposing ends; a base slidably mounted in an opening in one end of the body; and a chuck including at least two opposing jaws, the chuck being slidably mounted in the opposite end of the body and connected to the base, the jaws being formed of an electrically conductive material and being electrically connected to the electrical lead and forming a centrally located opening sized to receive and releasably hold a needle electrode, the chuck being slidably movable from an engaged position in which the jaws move radially inward to engage and hold the needle electrode to a released position in which the needle electrode may move freely out of the chuck when the base is depressed into the opening in the body. - View Dependent Claims (10, 11, 12, 13)
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14. A combination of a needle electrode assembly and a needle electrode, the combination comprising:
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a needle electrode including a stand-off mechanism that prevents the needle electrode assembly from contacting a patient'"'"'s bodily fluids when the needle electrode is inserted into a patient; a needle electrode assembly including; a body; a base movably coupled to the body; and a gripping assembly mounted in the body and coupled to the base, the gripping assembly being movable between an engaged position in which the gripping assembly engages and holds the stand-off mechanism of the needle electrode and a released position in which the gripping assembly allows the stand-off mechanism to move freely into and out of the gripping assembly, wherein moving the base with respect to the body causes the gripping assembly to move between the engaged position and the released position. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification