Heart assist devices, systems and methods
An apparatus and method for use in assisting a human heart are disclosed. The apparatus comprises an aortic compression means which may be fully implanatable, a fluid reservoir and a pump means adapted to pump a fluid from the reservoir to the aortic compression means so as to actuate the aortic compression means at least partly in counterpulsation with the patient's heart. In addition, the device is adapted to be wholly positioned within the right chest cavity of the patient. The aortic compression means of the device may be curved along its length so as to substantially replicate the curve of the ascending aorta.
1. An aortic compression means for use in a heart assist device, the aortic compression means including:
a) a flexible inflatable cuff adapted to be placed about the ascending aorta of a patient; and
b) a flexible, substantially inelastic, sheath adapted to extend around the cuff and at least assist in retaining it in position of the aorta,
wherein the aortic compression means is curved along its length so as to substantially replicate the curve of the ascending aorta adjacent to the aortic compression means.
2. An aortic compression means as claimed in claim 1 , wherein the aortic compression means is substantially C-shaped along its length.
3. An aortic compression means for use in a heart assist device, the aortic compression means including:
a) an elastic inflatable cuff adapted to be placed about the ascending aorta of a patient; and
b) a flexible, substantially inelastic, sheath adapted to extend around the cuff and at least assist in retaining it in position on the aorta,
wherein the aortic compression means is substantially C-shaped and includes two free ends, one of the free ends includes an elongated tongue adapted for suturing or otherwise connected in an overlapping relationship to the other end to retain the device adjacent the aorta.
4. An aortic compression means as claimed in claim 3 , wherein the cuff includes said two free ends adapted for suturing together in an overlapping relationship.
5. An aortic compression means as claimed in claim 3 , wherein the sheath includes said two free ends adapted for suturing together in an overlapping relationship.