Apparatus for the performance of an angioplasty of long duration
First Claim
1. Apparatus for the performance of a long-duration angioplasty of a coronary artery or of a peripheral artery, comprising a catheter having a flexible guide rod and a dilation bulb which is located at a distal end of said catheter and is intended to be inflated at the required location, further comprising:
- a perfusion pump connected at a proximate end of the catheter, and a control unit connected to said pump and which is capable of ensuring synchronization of the operation of said pump with the electrocardiogram of the patient to be treated in order to carry out distally of the dilation bulb a perfusion of blood or of oxygen-transporting physiological liquid at a variable flow rate and pressure corresponding to the physiological diastole and systole phases of the patient'"'"'s heartbeat,and wherein said guide rod extends along said catheter so as not to interfere with the circulation of liquid through the catheter and at the outlet of said catheter, and wherein said guide rod and said catheter are so dimensioned as to permit substantially free perfusion of blood through said catheter, in order to permit perfusion of blood or of physiological liquid distally of the dilation bulb throughout the period of inflation of said bulb;
said apparatus further comprising a tube extending into the inflatable bulb for inflating said bulb, said tube being secured to said catheter and having a substantially smaller diameter than said catheter.
0 Assignments
0 Petitions
Accused Products
Abstract
An apparatus for the performance of an angioplasty of long duration comprises a catheter associated with a flexible guide rod and provided with a dilation bulb which is intended to be inflated at the required location. The opposite end of the catheter is connected to a perfusion pump, the operation of which is dependent on a control unit for synchronizing its operation with the electrocardiogram of the patient to be treated in order to carry out downstream of the dilation bulb a perfusion of blood or of oxygen-transporting physiological liquid at a variable flow rate corresponding to the physiological diastole and systole phases of the patient'"'"'s heartbeat. To this end, the guide rod is mounted on the catheter or on the dilation bulb in order to avoid any interference with the circulation of liquid through the catheter and at the outlet of this latter, thus permitting perfusion of blood or of physiological liquid downstream of the dilation bulb throughout the period of inflation of the bulb.
110 Citations
18 Claims
-
1. Apparatus for the performance of a long-duration angioplasty of a coronary artery or of a peripheral artery, comprising a catheter having a flexible guide rod and a dilation bulb which is located at a distal end of said catheter and is intended to be inflated at the required location, further comprising:
-
a perfusion pump connected at a proximate end of the catheter, and a control unit connected to said pump and which is capable of ensuring synchronization of the operation of said pump with the electrocardiogram of the patient to be treated in order to carry out distally of the dilation bulb a perfusion of blood or of oxygen-transporting physiological liquid at a variable flow rate and pressure corresponding to the physiological diastole and systole phases of the patient'"'"'s heartbeat, and wherein said guide rod extends along said catheter so as not to interfere with the circulation of liquid through the catheter and at the outlet of said catheter, and wherein said guide rod and said catheter are so dimensioned as to permit substantially free perfusion of blood through said catheter, in order to permit perfusion of blood or of physiological liquid distally of the dilation bulb throughout the period of inflation of said bulb; said apparatus further comprising a tube extending into the inflatable bulb for inflating said bulb, said tube being secured to said catheter and having a substantially smaller diameter than said catheter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. Apparatus for the performance of a long-duration angioplasty of a coronary artery or of a peripheral artery, comprising a catheter having a flexible guide rod and a dilation bulb which is located at a distal end of said catheter and is intended to be inflated at the required location, further comprising:
-
a perfusion pump connected at a proximate end of the catheter, and a control unit connected to said pump and which is capable of ensuring synchronization of the operation of said pump with the electrocardiogram of the patient to be treated in order to carry out distally of the dilation bulb a perfusion of blood or of oxygen-transporting physiological liquid at a variable flow rate and pressure corresponding to the physiological diastole and systole phases of the patient'"'"'s heartbeat, wherein said guide rod extends along said catheter so as not to interfere with the circulation of liquid through the catheter and at the outlet of said catheter, and wherein said guide rod and said catheter are so dimensioned as to permit substantially free perfusion of blood through said catheter, in order to permit perfusion of blood or of physiological liquid distally of the dilation bulb throughout the period of inflation of said bulb; and wherein the unit for controlling the perfusion pump comprising a number of separate control devices designed to produce operation of said pump in accordance with the particular characteristics of the flow curve, during the diastole and systole phases, which is characteristic of one of the arteries to be treated, a control element for putting one device or another into service according to requirements, and the arrangement of the control unit being such that the operation of the device which is put into service is made dependent on the patient'"'"'s electrocardiogram, in regard to the moment of starting of the diastole and systole phases. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
-
Specification