Bent tip electrical surgical probe
DCFirst Claim
1. A hollow cannula for insertion into a patient'"'"'s body and adapted to receive an electrical signal from a signal generator to be transmitted to a target region in the patient'"'"'s body, comprising:
- an electrically insulated elongated shaft defining a longitudinal passage;
a distal tip portion coupled to the elongated shaft, the distal tip portion defining an aperture in communication with the longitudinal passage, the aperture adapted to allow introduction of fluid into the patient'"'"'s body; and
an electrical connection for receiving the electrical signal, the electrical connection coupled to the distal tip portion;
wherein the distal tip portion includes an uninsulated, rigidly bent portion to facilitate placement of the distal tip portion at the target region, and wherein at least a portion of the distal tip portion comprises an electrically conductive surface that defines a treatment area.
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Accused Products
Abstract
A medical needle or cannula for stimulation or ablation includes a rigid bent tip for simplified placement at target sites within a patient'"'"'s anatomy. The curved tip or shaft is used to steer the device within the patient'"'"'s body and to avoid critical anatomical structures. The device is partially insulated and has a tip that is at least partially electrically exposed; a connection to an external signal generator provides electrical stimulation or high-frequency heating of the patient'"'"'s tissue proximal to the exposed tip. The device includes a longitudinal passage to facilitate the injection of fluids or the insertion of instruments through the cannula or needle.
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Citations
12 Claims
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1. A hollow cannula for insertion into a patient'"'"'s body and adapted to receive an electrical signal from a signal generator to be transmitted to a target region in the patient'"'"'s body, comprising:
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an electrically insulated elongated shaft defining a longitudinal passage; a distal tip portion coupled to the elongated shaft, the distal tip portion defining an aperture in communication with the longitudinal passage, the aperture adapted to allow introduction of fluid into the patient'"'"'s body; and an electrical connection for receiving the electrical signal, the electrical connection coupled to the distal tip portion; wherein the distal tip portion includes an uninsulated, rigidly bent portion to facilitate placement of the distal tip portion at the target region, and wherein at least a portion of the distal tip portion comprises an electrically conductive surface that defines a treatment area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A hollow cannula for insertion into a patient'"'"'s body and adapted to receive an electrical signal from a signal generator to be transmitted to a target region in the patient'"'"'s body, comprising:
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an electrically insulated elongated shaft defining a longitudinal passage; a distal tip portion coupled to the elongated shaft, the distal tip portion defining an aperture in communication with the longitudinal passage, the aperture adapted to allow introduction of fluid into the patient'"'"'s body; and means for receiving the electrical signal, the means coupled to the distal tip portion; wherein the distal tip portion includes an uninsulated, rigidly bent portion to facilitate placement of the distal tip portion at the target region, and wherein at least a portion of the distal tip portion comprises an electrically conductive surface that defines a treatment area.
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12. An instrument for transmitting an electrical signal to a target region in a patient'"'"'s body, comprising:
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an electrically insulated elongated shaft; a distal tip portion coupled to the elongated shaft, the distal tip portion defining an aperture, the aperture adapted to allow introduction of fluid into the patient'"'"'s body, wherein the distal tip portion includes an uninsulated, rigidly bent portion to facilitate placement of the distal tip portion at the target region, and wherein at least a portion of the distal tip portion comprises an electrically conductive surface that defines a treatment area; and an electrical connection for receiving the electrical signal, the electrical connection coupled to the distal tip portion.
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Specification