Multiple lens oxygen sensor for medical electrical lead
First Claim
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1. A body implantable medical electrical lead adapted to be implanted in a living body in operative relation with oxygenated body fluid, comprising:
- (a) a lead body having proximal and distal ends and comprising an electrically insulative material;
(b) at least first and second electrical conductors disposed within at least portions of the lead body, the conductors having at least portions of the electrically insulative material disposed therebetween;
(c) an oxygen sensor attached to the lead body and coupled electrically with said first and second lead conductors, comprising;
(i) an elongated light blocking housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin;
(ii) a light emitter disposed within the first interior portion of the elongated housing;
(iii) a light detector disposed within the second interior portion of the elongated housing;
(iv) a light transmissive first lens disposed over the light emitter and mounted in the elongated housing between the exterior and the first interior portion of the elongated housing to enable at least portions of light emitted by the light emitter to pass through the first lens from the first interior portion to the exterior; and
(v) a light transmissive second lens disposed over the light detector and mounted in the elongated housing between the exterior and the second interior portion of the elongated housing to enable at least portions of light emitted by the light emitter through the first lens and reflecting from blood adjacent to at least portions of the housing exterior to pass through the second lens from the exterior to the second interior portion, the first and second lenses being separated and spaced apart from one another such that light emitted through the first lens is not transmitted directly into the second lens.
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Accused Products
Abstract
An implantable sensor assembly for use with an implantable medical device are disclosed. The sensor assembly preferably includes two or more physiologic sensors coupled to the medical device via a pair of lead conductors, or alternatively an oxygen sensor having certain features. The oxygen sensor permits more accurate and reliable measurement of oxygen saturation in blood masses flowing within the human body.
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Citations
73 Claims
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1. A body implantable medical electrical lead adapted to be implanted in a living body in operative relation with oxygenated body fluid, comprising:
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(a) a lead body having proximal and distal ends and comprising an electrically insulative material;
(b) at least first and second electrical conductors disposed within at least portions of the lead body, the conductors having at least portions of the electrically insulative material disposed therebetween;
(c) an oxygen sensor attached to the lead body and coupled electrically with said first and second lead conductors, comprising;
(i) an elongated light blocking housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin;
(ii) a light emitter disposed within the first interior portion of the elongated housing;
(iii) a light detector disposed within the second interior portion of the elongated housing;
(iv) a light transmissive first lens disposed over the light emitter and mounted in the elongated housing between the exterior and the first interior portion of the elongated housing to enable at least portions of light emitted by the light emitter to pass through the first lens from the first interior portion to the exterior; and
(v) a light transmissive second lens disposed over the light detector and mounted in the elongated housing between the exterior and the second interior portion of the elongated housing to enable at least portions of light emitted by the light emitter through the first lens and reflecting from blood adjacent to at least portions of the housing exterior to pass through the second lens from the exterior to the second interior portion, the first and second lenses being separated and spaced apart from one another such that light emitted through the first lens is not transmitted directly into the second lens. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. An implantable medical device system, comprising:
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(a) an implantable medical device adapted to be implanted in a living body;
(b) a body implantable medical electrical lead attached to the implantable medical device adapted to be implanted in a living body in operative relation with oxygenated body fluid, the lead comprising;
(i) a lead body having proximal and distal ends and comprising an electrically insulative material, the proximal end of the lead being attached to the implantable medical device;
(ii) at least first and second electrical conductors disposed within at least portions of the lead body, the conductors having at least portions of the electrically insulative material disposed therebetween;
(iii) an oxygen sensor attached to the lead body and coupled electrically with said first and second lead conductors, comprising;
(1) an elongated light blocking housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin;
(2) a light emitter disposed within the first interior portion of the elongated housing;
(3) a light detector disposed within the second interior portion of the elongated housing;
(4) a light transmissive first lens disposed over the light emitter and mounted in the elongated housing between the exterior and the first interior portion of the elongated housing to enable at least portions of light emitted by the light emitter to pass through the first lens from the first interior portion to the exterior; and
(5) a light transmissive second lens disposed over the light detector and mounted in the elongated housing between the exterior and the second interior portion of the elongated housing to enable at least portions of light emitted by the light emitter through the first lens and reflecting from blood adjacent to at least portions of the housing exterior to pass through the second lens from the exterior to the second interior portion, the first and second lenses being separated and spaced apart from one another such that light emitted through the first lens is not transmitted directly into the second lens. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A body implantable medical oxygen sensor adapted to be implanted in a living body in operative relation with oxygenated body fluid, comprising:
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(a) an elongated light blocking housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin;
(b) a light emitter disposed within the first interior portion of the elongated housing;
(c) a light detector disposed within the second interior portion of the elongated housing;
(d) a light transmissive first lens disposed over the light emitter and mounted in the elongated housing between the exterior and the first interior portion of the elongated housing to enable at least portions of light emitted by the light emitter to pass through the first lens from the first interior portion to the exterior; and
(e) a light transmissive second lens disposed over the light detector and mounted in the elongated housing between the exterior and the second interior portion of the elongated housing to enable at least portions of light emitted by the light emitter through the first lens and reflecting from blood adjacent to at least portions of the housing exterior to pass through the second lens from the exterior to the second interior portion, the first and second lenses being separated and spaced apart from one another by said housing such that light emitted through the first lens is not transmitted directly into the second lens. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59)
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60. A method of making a body implantable medical electrical lead adapted to be implanted in a living body in operative relation with oxygenated body fluid, the lead comprising a lead body having proximal and distal ends, an electrically insulative material, at least first and second electrical conductors disposed within at least portions of the lead body, the conductors having at least portions of the electrically insulative material disposed therebetween, an oxygen sensor being attached to the lead body and coupled electrically with said first and second lead conductors and comprising an elongated housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin, a light emitter disposed within the first interior portion of the elongated housing, a light detector disposed within the second interior portion of the elongated housing, a light transmissive first lens disposed over the light emitter and mounted in the elongated housing between the exterior and the first interior portion of the elongated housing to enable at least portions of light emitted by the light emitter to pass through the first lens from the first interior portion to the exterior, and a light transmissive second lens disposed over the light detector and mounted in the elongated housing between the exterior and the second interior portion of the elongated housing to enable at least portions of light emitted by the light emitter through the first lens and reflecting from blood adjacent to at least portions of the housing prior to pass through the second lens from the exterior to the second interior portion, the first and second lenses being separated and spaced apart from one another such that light emitted through the first lens is not transmitted directly into the second lens, the method comprising the steps of:
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(a) providing the lead body;
(b) providing the oxygen sensor, and (c) attaching the oxygen sensor to the lead body. - View Dependent Claims (61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73)
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Specification