Ventilatory assist system and methods to improve respiratory function
First Claim
1. An electrode suitable for temporary placement in diaphragm tissue comprising:
- a needle at a first end,a central portion comprising a straight insulated lead, a helically wound insulated lead portion, and a deinsulated coiled portion, anda deinsulated barb and a stop at a second end adjacent to the deinsulated coiled portion, wherein the stop is configured to hold the deinsulated barb and the deinsulated coiled portion at the surface of the diaphragm.
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Accused Products
Abstract
Systems and methods are provided to improve respiratory function. Systems include an external electrical stimulator coupled to electrodes that stimulates diaphragm contraction and may optionally include a positive pressure mechanical ventilator. The system further includes an electrode suitable for temporary implantation. Electrical stimulation is provided to specific portions of the diaphragm, such as one hemidiaphragm preferentially over another. By preferentially contracting one hemidiaphragm, a specific portion of a lung may be expanded, such as a posterior portion. By the provision of the negative intrathoracic pressure from diaphragm contraction, greater expansion of specific portion of lung is achieved in relationship to air pressure within the lung, thereby improving compliance. Supplementation of stimulated diaphragm contraction with positive pressure driven air flow from a PPMV directs the air flow to specific portions of the lung. Such portion may include a posterior portion of a lung, and may cause a clearing of atelectasis in that portion.
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Citations
16 Claims
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1. An electrode suitable for temporary placement in diaphragm tissue comprising:
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a needle at a first end, a central portion comprising a straight insulated lead, a helically wound insulated lead portion, and a deinsulated coiled portion, and a deinsulated barb and a stop at a second end adjacent to the deinsulated coiled portion, wherein the stop is configured to hold the deinsulated barb and the deinsulated coiled portion at the surface of the diaphragm. - View Dependent Claims (2, 3, 4, 5)
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6. A method of inserting an electrode suitable for temporary placement in a patient'"'"'s diaphragm, the electrode comprising a needle at a first end, a central portion comprising a straight insulated lead, a helically wound insulated lead portion, and a deinsulated coiled portion, and a deinsulated barb and a stop at a second end, the method comprising:
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inserting the electrode into the diaphragm surface by the first end comprising the needle pulling the electrode through the diaphragm until the second end comprising the stop is at the diaphragm surface; and connecting the first end to an external electrical stimulator. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electrode suitable for temporary placement in diaphragm tissue comprising:
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a needle at a first end, a central portion comprising a straight insulated lead adjacent to the needle, a helically wound insulated lead portion, and a deinsulated coiled portion adjacent to the second end, and a deinsulated barb at the second end and a stop formed between the deinsulated barb and the deinsulated coiled portion, wherein the stop is configured to hold the deinsulated barb and the deinsulated coiled portion at the surface of the diaphragm.
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Specification