Light focusing apparatus for medical electrical lead oxygen sensor
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 electrical conductors, comprising;
(i) a 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 housing;
(iii) a light detector disposed within the second interior portion of the housing;
(iv) at least one light transmissive lens disposed over the light emitter and mounted in the elongated housing between the exterior 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 light focusing device positioned in one of the at least one lens and the second interior portion of the housing, the light focusing device gathering light transmitted into the second portion through the at least one lens and guiding the light so gathered to the light detector for detection thereby.
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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.
242 Citations
46 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 electrical conductors, comprising; (i) a 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 housing; (iii) a light detector disposed within the second interior portion of the housing; (iv) at least one light transmissive lens disposed over the light emitter and mounted in the elongated housing between the exterior 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 light focusing device positioned in one of the at least one lens and the second interior portion of the housing, the light focusing device gathering light transmitted into the second portion through the at least one lens and guiding the light so gathered to the light detector for detection thereby. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. 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 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; (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 coupled with said at least first and second electrical conductors, comprising; (1) a 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 housing; (3) a 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 light focusing device positioned in one of the at least one lens and the second interior portion of the housing, the light focusing device gathering light transmitted into the second portion through the at least one lens and guiding the light so gathered to the light detector for detection thereby. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. 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) 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 light focusing device positioned in one of the at least one lens and the second interior portion of the housing, the light focusing device gathering light transmitted into the second portion through the at least one lens and guiding the light so gathered to the light detector for detection thereby. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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41. 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 light focusing device positioned in one of the at least one lens and the second interior portion of the housing, the light focusing device gathering light transmitted into the second portion through the at least one lens and guiding the light so gathered to the light detector for detection thereby, 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 (42, 43, 44, 45, 46)
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Specification