Trans-esophageal aortic flow rate control
A device and method is provided herein for esophageal impingement of a patient's aorta. The device may be inserted into a patient's esophagus and positioned at the location where the esophagus passes over the patient's aorta. In this position, an actuation device is used to apply pressure to the patient's aorta through their esophagus to impinge or occlude the aorta to stop or significantly reduce hemorrhaging. A manually operable actuator handle enables a physician to manipulate a head assembly of the device through three distinct degrees of freedom of movement so as to control placement and direction of force against the patient's esophagus and, in turn, their aorta.
1. A device for the esophageal compression of a patient's aorta, comprising:
an elongate tube;
an actuator handle at a proximal end of said elongate tube; and
a head assembly at a distal end of said elongate tube, said head assembly further comprising a pair of clamp blades that are mounted to said elongate tube for slidable movement along a first axis that is perpendicular to a second, longitudinal axis of said elongate tube, and that are mounted to said elongate tube for pivotable movement about said first axis;
wherein said actuator handle engages said head assembly to cause said head assembly to move through at least one of three distinct degrees of freedom of movement to apply pressure to a patient's tissue.
2. The device of claim 1 , wherein said pair of clamp blades are spring biased away from one another.
3. The device of claim 2 , further comprising:
a clamp blade pitch control actuator moveably mounted to said handle and engaging said pair of clamp blades to pivot said clamp blades about said first axis; and
a clamp blade closing actuator moveably mounted to said handle and engaging said pair of clamp blades to slide said clamp blades along said first axis.
4. The device of claim 1 , wherein said head assembly is further pivotable about a third axis that is perpendicular to said first and second axes.
5. The device of claim 4 , further comprising a clamp blade yaw control actuator movably mounted to said handle and engaging said head assembly to pivot said head assembly about said third axis.
6. The device of claim 5 , said elongate tube further comprising a flex section of higher flexibility than a remainder of said elongate tube, wherein said flex section is positioned proximally from the distal end of said elongate tube.
7. The device of claim 6 , wherein said clamp blade yaw control actuator engages said flex section to pivot said head assembly at said flex section.
8. A device for the esophageal compression of a patient's aorta, comprising:
an elongate esophageal tube having a longitudinal axis extending from a proximal end of said esophageal tube to a distal end of said esophageal tube;
an actuator handle at said proximal end of said esophageal tube; and
a head assembly at a distal end of said esophageal tube;
wherein said actuator handle engages said head assembly to (i) expand a width of at least a portion of said head assembly; (ii) pivot at least a portion of said head assembly about a first lateral axis that is perpendicular to said longitudinal axis; and (iii) pivot at least a portion of said head assembly about a second lateral axis that is perpendicular to said longitudinal axis and said first lateral axis; and
wherein said head assembly further comprises a pair of clamp blades that are mounted to said esophageal tube for slidable movement along said first lateral axis, and that are mounted to said elongate tube for pivotable movement about said first lateral axis.
9. The device of claim 8 , wherein said pair of clamp blades are spring biased away from one another.
10. The device of claim 9 , further comprising:
a clamp blade pitch control actuator moveably mounted to said handle and engaging said pair of clamp blades to pivot said clamp blades about said first lateral axis; and
a clamp blade closing actuator moveably mounted to said handle and engaging said pair of clamp blades to slide said clamp blades along said first lateral axis.
11. The device of claim 8 , further comprising a clamp blade yaw control actuator movably mounted to said handle and engaging said head assembly to pivot said head assembly about said second lateral axis.
12. The device of claim 11 , said esophageal tube further comprising a flex section of higher flexibility than a remainder of said esophageal tube, wherein said flex section is positioned proximally from a distal end of said esophageal tube.
13. The device of claim 12 , wherein said clamp blade yaw control actuator engages said flex section to pivot said head assembly at said flex section.
14. A method for applying impinging pressure to a patient's aorta from the patient's esophagus, comprising the steps of:
providing a device comprising:
an elongate esophageal tube having a longitudinal axis extending from a proximal end of said esophageal tube to a distal end of said esophageal tube;
an actuator handle at said proximal end of said esophageal tube; and
a head assembly at a distal end of said esophageal tube;
wherein said actuator handle engages said head assembly to (i) expand a width of at least a portion of said head assembly; (ii) pivot at least a first portion of said head assembly about a first lateral axis that is perpendicular to said longitudinal axis; and (iii) pivot at least a second portion of said head assembly about a second lateral axis that is perpendicular to said longitudinal axis and said first lateral axis; and
wherein said head assembly further comprises a pair of clamp blades that are mounted to said esophageal tube for slidable movement along said first lateral axis, and that are mounted to said elongate tube for pivotable movement about said first lateral axis;
positioning said device in said patient's esophagus so that said head assembly is positioned adjacent a crossing of said patient's esophagus over said patient's aorta; and
using said actuator handle to manipulate said head assembly to apply impinging pressure to the patient's aorta from the patient's esophagus.
15. The method of claim 14 , wherein said step of using said actuator handle further comprises expanding the width of said head assembly to cause at least a portion of said head assembly to apply pressure against an interior wall of said patient's esophagus.
16. The method of claim 15 , wherein said step of using said actuator handle further comprises pivoting said first portion of said head assembly about said first lateral axis to apply pressure against an interior wall of said patient's esophagus.