Terminal for medical instrument and method of assembling the terminal
First Claim
1. In combination for providing for the introduction of a terminal lead from a heart pacemaker into the body of a patient,a lid for the heart pacemaker,an electrical terminal pin,means for supporting the terminal pin in electrically insulated relationship to the lid includingfirst support means enveloping the electrical terminal pin and disposed in spaced relationship to the terminal pin and engaging the lid,second support means supported by the first support means in insulated relationship to the lid and extending above the first support means,insulating means disposed between the terminal pin and the first support means and between the terminal pin and the second support means and hermetically sealed to the first support means, the second support means and the terminal pin for maintaining the terminal pin in fixed and spaced relationship to the first and second support means, the insulating means being disposed relative to the terminal pin and the lid for providing a long path for the leakage of electrical current between the terminal pin and the lid to maintain the terminal pin in electrically insulated relationship to the lid, andelectrical body means disposed on the second support means and hermetically sealed to the insulating means and electrically connected to the terminal pin and retaining the terminal pin in electrically conductive relationship with the terminal lead for introducing signals from the terminal pin through the terminal lead into the body of the patient.
2 Assignments
0 Petitions
Accused Products
Abstract
A terminal is provided for introducing signals from an electrical terminal pin in a heart pacemaker to a terminal lead introduced into a patient'"'"'s body. The terminal pin is disposed in a lid of the heart pacemaker so that the terminal pin is insulated from the lid. Means are also provided for introducing the signals on the terminal pin to the terminal lead without subjecting the pin to undue stresses.
The terminal includes a hollow, electrically conductive ferrule disposed in concentric relationship with the terminal pin and attached to the lid. An electrical filter is disposed in the ferrule and is maintained in fixed relationship to the ferrule and the terminal. Insulating means are provided for bonding the ferrule and the terminal.
An elongated sleeve is disposed on the ferrule and an insulating material is disposed between the terminal pin and the sleeve and is hermetically sealed to the terminal pin and the sleeve. The sleeve supports an electrically conductive catheter block which fits over the electrical terminal pin and communicates electrically with the terminal pin. The catheter block also holds the terminal lead in fixed position and communicates electrically with the lead and directs the lead into the body of the patient.
A method is also provided for assembling the terminal. The method provides for the assembly of the terminal in a minimum number of steps and in a manner to insure the proper assembly of the terminal without breaking any components in the terminal.
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Citations
40 Claims
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1. In combination for providing for the introduction of a terminal lead from a heart pacemaker into the body of a patient,
a lid for the heart pacemaker, an electrical terminal pin, means for supporting the terminal pin in electrically insulated relationship to the lid including first support means enveloping the electrical terminal pin and disposed in spaced relationship to the terminal pin and engaging the lid, second support means supported by the first support means in insulated relationship to the lid and extending above the first support means, insulating means disposed between the terminal pin and the first support means and between the terminal pin and the second support means and hermetically sealed to the first support means, the second support means and the terminal pin for maintaining the terminal pin in fixed and spaced relationship to the first and second support means, the insulating means being disposed relative to the terminal pin and the lid for providing a long path for the leakage of electrical current between the terminal pin and the lid to maintain the terminal pin in electrically insulated relationship to the lid, and electrical body means disposed on the second support means and hermetically sealed to the insulating means and electrically connected to the terminal pin and retaining the terminal pin in electrically conductive relationship with the terminal lead for introducing signals from the terminal pin through the terminal lead into the body of the patient.
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9. In combination for providing for introduction of a terminal lead from a heart pacemaker into the body of a patient,
a lid, an electrical terminal pin, a ferrule made from an electrically conductive material and having a hollow configuration and disposed in spaced relationship to the terminal pin and supported by the lid, an electrical filter disposed in concentric relationship to the terminal pin and within the ferrule and having properties of passing signals only within a particular range of frequencies, first means disposed within the ferrule for maintaining the electrical filter in fixed relationship to the terminal pin and the ferrule, second means having insulating properties and disposed on the ferrule and extending above the ferrule, insulating means disposed between the ferrule and the terminal pin and hermetically sealing the terminal pin, the ferrule and the second means, and electrical body means disposed on the second means for supporting the terminal lead and hermetically sealed to the insulating means and connected electrically to the terminal pin for introducing the electrical signals on the terminal pin through the terminal lead into the body of the patient.
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14. In combination for providing for the introduction of a terminal load from a heart pacemaker into the body of a patient,
a lid, an electrical terminal pin, a ferrule made from an electrically conductive material and having a hollow configuration and disposed in spaced relationship to the terminal pin and supported by the lid, a filter disposed on the terminal pin and within the ferrule, a sleeve made from an electrically insulating material and disposed on the ferrule, insulating means maintaining the electrical terminal pin, the filter, the sleeve and the ferrule in spaced and hermetically sealed and electrically insulating relationship and providing a long path for the flow of leakage current between the terminal pin and the ferrule, and an electrically conductive catheter block disposed on the sleeve in electrically communicating relationship with the terminal pin and hermetically sealed by the insulating means and supported by the sleeve and engaging the terminal lead in a fixed relationship to provide for the introduction of electrical signals from the terminal pin to the terminal lead.
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21. In combination for providing for the introduction of a terminal lead from a heart pacemaker into the body of a patient,
a terminal pin, first support means having electrically conductive properties and spaced from the terminal pin, a lid disposed in abutting relationship to the first support means, an electrical body for supporting the terminal lead and coupled electrically to the terminal pin, and insulating means disposed between the terminal pin and the first support means and hermetically sealing the terminal pin, the first support means and the electrical body.
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28. In combination for providing for the introduction of a terminal lead from a heart pacemaker into the body of a patient,
a terminal pin, an electrically conductive ferrule disposed in spaced relationship to the terminal pin, an electrical body constructed to support the terminal lead, the electrical body being coupled electrically to the terminal pin, a lid disposed against the ferrule and coupled electrically to the ferrule, and insulating means hermetically sealing the terminal pin, the ferrule and the electrical body and having a high dielectric constant of electrical impedance to insulate electrically the terminal pin and the electrical body relative to the ferrule and the lid.
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40. In combination for providing for the introduction of a terminal lead from a heart pacemaker into the body of a patient,
a terminal pin, an electrically conductive ferrule disposed in spaced relationship to the terminal pin, an insulating sleeve supported on the ferrule and extending above the ferrule to define a well, insulating means supported within the well defined by the insulating sleeve and insulating the terminal pin and the ferrule, a lid for the heart pacemaker, the lid being disposed against the ferrule, and an electrically conductive body disposed on the terminal pin in electrically conductive relationship with the terminal pin and insulated by the insulating means.
Specification