Bizarre Patents
A helium-filled sun shade for protecting individuals engaged in outdoor activities.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 4770177 | Apparatus and method for adjusting heart/pacer relative to changes in venous diameter during exercise to obtain a required cardiac output. The apparatus paces a heart in accordance with the heart/pacer rate needed to produce a required cardiac output while a person is exercising or undergoes emotional stress in response to changes in venous blood vessel diameter. The apparatus includes a pac... | 09/13/1988 |
| 4730619 | Apparatus and method for adjusting heart/pacer rate relative to ejection time to obtain a required cardiac output The apparatus for pacing a heart in accordance with the heart rate needed to produce a required cardiac output while the person is exercising, comprises a pacer adapted to be implanted in a human body and having a pulse generator and control circuitry (e.... | 03/15/1988 |
| 4719921 | Cardiac pacemaker adaptive to physiological requirements A cardiac pacemaker has a pacing pulse generator whose rate is adjusted as a function of the cardiac output requirements of the body that are commensurate with the activity of the individual. The length of the ventricular preejection period (PEP) is gover... | 01/19/1988 |
| 4708143 | Method for controlling pacing of a heart in response to changes in stroke volume A method for sensing opening and closing of a tricuspid valve in a heart, for using those sensings to determine stroke volume, and for controlling pacing of a heart relative to changes in stroke volume, utilizing a pacing lead having a lead body and a pre... | 11/24/1987 |
| 4566456 | Apparatus and method for adjusting heart/pacer rate relative to right ventricular systolic pressure to obtain a required cardiac output The apparatus for pacing a heart in accordance with the heart rate needed to produce a required cardiac output while the person is exercising, comprises a pacer adapted to be implanted in a human body and having a pulse generator and control circuitry (e.... | 01/28/1986 |
| 4052991 | Method of stimulating the heart Device and method for stimulating the heart. The device comprises means for producing stimulating pulses at regular intervals and means responsive to spontaneous heart signals for controlling the transmission of said pulses to the heart in dependence upon... | 10/11/1977 |
