Tissue overgrowth detector for implantable medical device
First Claim
Patent Images
1. A body implantable medical electrical lead, 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, comprising;
(i) a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin;
(ii) at least one light emitter disposed within the first interior portion of the housing;
(iii) a first light detector disposed within the second interior portion of the housing;
(iv) at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and(v) a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter.
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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
80 Claims
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1. A body implantable medical electrical lead, 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, comprising; (i) a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin; (ii) at least one light emitter disposed within the first interior portion of the housing; (iii) a first light detector disposed within the second interior portion of the housing; (iv) at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and (v) a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter. - 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; (b) a body implantable medical electrical lead attached to the implantable medical device, the lead comprising; (i) a lead body having proximal and distal ends and comprising an electrically insulative material; (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, comprising; (1) a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin; (2) at least one light emitter disposed within the first interior portion of the housing; (3) a first light detector disposed within the second interior portion of the housing; (4) at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and (5) a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A body implantable medical oxygen sensor, comprising:
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(a) a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin; (b) at least one light emitter disposed within the first interior portion of the housing; (c) a first light detector disposed within the second interior portion of the housing; (d) at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and (e) a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter. - View Dependent Claims (49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66)
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67. A method of making a body implantable medical electrical lead, the lead comprising a lead body having proximal and distal ends and 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 comprising a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin, at least one light emitter disposed within the first interior portion of the housing, a first light detector disposed within the second interior portion of the housing, at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter, 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 (68, 69, 70, 71, 72, 73, 74, 75)
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76. A method of operating an implantable medical device system comprising an implantable medical device and a body implantable medical electrical lead, the lead being attached to the implantable medical device, the lead comprising a lead body having proximal and distal ends and 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 comprising a housing having proximal and distal ends, an exterior, and first and second interior portions disposed therewithin, at least one light emitter disposed within the first interior portion of the housing, a first light detector disposed within the second interior portion of the housing, at least one light transmissive lens disposed over the light emitter and the light detector, the at least one lens being mounted in the housing between the exterior and the first and second interior portions, and a second self-test light detector disposed in the first interior portion of the housing near the at least one light emitter, the method comprising the steps of:
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(a) providing the implantable medical device; (b) providing the lead; (c) providing the oxygen sensor; (d) attaching the oxygen sensor to the lead; (e) attaching the lead to the implantable medical device; (f) implanting the system in a mammalian subject such that the oxygen sensor is at least partially surrounded by a flowing blood mass; (g) emitting light from the light emitter through the at least one lens into the blood mass; (h) detecting, with the first light detector, light reflected from the blood mass into the second interior portion, and (i) detecting, with the second light detector, light reflected from tissue overgrowth disposed over at least portions of the at least one lens. - View Dependent Claims (77, 78, 79, 80)
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Specification