Functional neuromuscular stimulation system with shielded percutaneous interface
First Claim
1. A percutaneous interface shield system for protecting electrical leads which pass through a patient'"'"'s skin, the shield system comprising:
- a shield member having a peripheral lip portion extending peripherally around a low profile central portion, the central portion defining an aperture to be disposed over a site at which the leads pass through the patient'"'"'s skin, the central portion being configured of an elastomeric material;
an electrical connector connected with the central portion, the leads which pass through the patient'"'"'s skin being operatively connected with a shield mounted electrical connector; and
,an adhesive means for adhering the shield member with the patient'"'"'s skin.
1 Assignment
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Accused Products
Abstract
An input command controller provides logic function selection signals and proportional signals. The signals are generated by movement of a ball member and socket member relative to two orthogonal axes. When the joystick is implanted a transmitter transmits the signals to a patient carried unit. The patient carried unit includes an amplitude modulation algorithm such as a look-up table, a pulse width modulation algorithm, and an interpulse interval modulation algorithm. The algorithms derive corresponding stimulus pulse train parameters from the proportional signal which parameters are transmitted to an implanted unit. The implanted unit has a power supply that is powered by the carrier frequency of the transmitted signal and stimulation pulse train parameter decoders. An output unit assembles pulse trains with the decoded parameters for application to implanted electrodes. A laboratory system is periodically connected with the patient carried unit to measure for changes in patient performance and response and reprogram the algorithm accordingly. The laboratory system also performs initial examination, set up, and other functions. A percutaneous interface structure is provided which facilitates cleansing the area of the limb around the electrode leads, which protects the lead wires from damage and catching and which protects the patient against catching the lead wires and pulling or ripping the electrodes form the implantation site.
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Citations
13 Claims
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1. A percutaneous interface shield system for protecting electrical leads which pass through a patient'"'"'s skin, the shield system comprising:
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a shield member having a peripheral lip portion extending peripherally around a low profile central portion, the central portion defining an aperture to be disposed over a site at which the leads pass through the patient'"'"'s skin, the central portion being configured of an elastomeric material; an electrical connector connected with the central portion, the leads which pass through the patient'"'"'s skin being operatively connected with a shield mounted electrical connector; and
,an adhesive means for adhering the shield member with the patient'"'"'s skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of of providing a percutaneous interface comprising:
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passing at least one electrical lead through a site in a patient'"'"'s skin; connecting the electrical lead with a first electrical connector which is mounted in a shield member, which shield member has a peripheral lip portion surrounding a low profile central portion, the central portion defining an aperture therethrough in communication with the first electrical connector which is mounted to the central portion; adhering the central and peripheral portions to the patient'"'"'s skin with a layer of adhesive; adhesively applying an overlay member having an aperture therethrough which corresponds generally in size to the sheild member central portion over the peripheral lip portion and the patient'"'"'s skin therearound such that the shield member is securely adhered to the patient'"'"'s skin around the lead penetration site; and
,connecting a second electrical connector with the first connector.
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13. A percutaneous interface system providing an electrical connection between intramuscular electrodes implanted into a human patient and an external electrical stimulus generator, said percutaneous interface system comprising:
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a first electrical connector electrically connected with a plurality of electrical leads each originating at an intramuscular stimulation electrode; a second electrical connector electrically connected with a plurality of electrical leads each originating at a multichannel external electrical stimulus generator, said first and second electrical connectors selectively mating to electrically interconnect said plurality of intramuscular electrodes with the channels of the multichannel external electrical stimulus generator; an shield member having a low profile elastomeric central portion for accepting and retaining said first and second electrical connectors, and a peripheral lip portion extending outwardly therefrom, said peripheral lip portion including a lower adhesive surface for contacting and adhering to the skin of the patient in the region of a percutaneous electrode connection site; and
,an adhesive overlay for fixing the relative position of the first and second electrical connectors and the low profile elastomeric central portion of said shield member.
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Specification