초록 ▼

An implantable antiarrhytmia device which detects and classifies arrhythmias of the human heart, and delivers appropriate therapy. The device employs a method of arrhythmia classification based on a set of prioritized rules, each of the rules defining a plurality of criteria based upon characteristi

An implantable antiarrhytmia device which detects and classifies arrhythmias of the human heart, and delivers appropriate therapy. The device employs a method of arrhythmia classification based on a set of prioritized rules, each of the rules defining a plurality of criteria based upon characteristics of sensed depolarizations of heart tissue, each rule being met when the criteria associated with the rule are met. Some rules, when met, trigger delivery of antiarrhythmia therapy. Other rules, when met, inhibit delivery of antiarrhythmia therapy. The rules may be met simultaneously, and if so, the highest priority rule governs the behavior of the device.

대표청구항 ▼

An implantable antiarrhytmia device which detects and classifies arrhythmias of the human heart, and delivers appropriate therapy. The device employs a method of arrhythmia classification based on a set of prioritized rules, each of the rules defining a plurality of criteria based upon characteristi

An implantable antiarrhytmia device which detects and classifies arrhythmias of the human heart, and delivers appropriate therapy. The device employs a method of arrhythmia classification based on a set of prioritized rules, each of the rules defining a plurality of criteria based upon characteristics of sensed depolarizations of heart tissue, each rule being met when the criteria associated with the rule are met. Some rules, when met, trigger delivery of antiarrhythmia therapy. Other rules, when met, inhibit delivery of antiarrhythmia therapy. The rules may be met simultaneously, and if so, the highest priority rule governs the behavior of the device. the anatomic relationship with the lesion is guided by reference to the representation produced by the representation system. 2. The system of claim 1, wherein the set of data points is digitally derived from at least one diagnostic test selected from the group consisting of mammography, ultrasound, MRI, CT scan, PET scan, thermal scan, conventional XRay modalities and radionuclide scan.3. The system of claim 1, wherein the set of data points identifying the position of the lesion is derived from a set of at least two mammograms.4. The system of claim 1, wherein said representation system produces a data set representing the position of the surgical instrument and the lesion relative to each other in three-dimensional space.5. The system of claim 1, wherein the representation produced by the representation system comprises at least one visual image.6. The system of claim 5, wherein the at least one visual image comprises a non representational image graphically representing the position of the surgical instrument and the lesion relative to each other in three-dimensional space.7. The system of claim 1, wherein the representation produced by the representation system represents a real-time change in the position of the surgical instrument relative to the lesion.8. The system of claim 1, further comprising an acquisition system for obtaining the set of data points identifying a position of the lesion in the at least two two-dimensional planes.9. The system of claim 8, wherein the acquisition system comprises a mammography system.10. The system of claim 1, further comprising an introduction system wherein the introduction system directs the surgical instrument into the positional relationship with the lesion.11. A system for guiding a surgical instrument into a spatial relationship with a lesion, comprising: a data translation system for translating a set of data points representative of the lesion in at least two two-dimensional planes into a set of three-dimensional coordinates representative of the position of the lesion in three-dimensional space, a positioning system for identifying the position of the lesion in three-dimensional space relative to a three dimensional position of at least one anatomic landmark, a tracking system disposed in relation to the surgical instrument, wherein said tracking system generates tracking signals for identifying the position of the surgical instrument in three dimensional space, and a representation system for producing at least one representation relating the position of the surgical instrument in three dimensional space to the position of at least one structure selected from the group consisting of the at least one anatomic landmark and the lesion, whereby the placement of the surgical instrument into the anatomic relationship with the lesion is guided by reference to the representation produced by the representation system. 12. The system of claim 11, wherein the three-dimensional position of the at least one anatomic landmark is identified by ultrasound.13. The system of claim 11, wherein the set of data points is digitally derived from at least one diagnostic test selected from the group consisting of mammography, ultrasound, MRI, CT scan, PET scan, thermal scan, conventional XRay modalities and radionuclide scan.14. The system of claim 11, wherein the positioning system comprises a device for identifying the three-dimensional position of the at least one anatomic landmark in real time.15. The system of claim 14 wherein the device for identifying the three-dimensional position of the at least one anatomic landmark in real time comprises an ultrasound device.16. A system for obtaining a tissue sample from a selected area of a breast, comprising: a surgical instrument adapted for obtaining the tissue sample, a mammography system for translating two-dimensional data obtained from at least two mammograms into data for identifying a three-dimensional position of the se