Balloon catheter inflation device including apparatus for monitoring and wireless transmission of inflation data, and system
First Claim
1. An inflation device for inflating a dilatation balloon of a catheter during a percutaneous transluminal angioplasty procedure, the catheter having a lumen in fluid communication with the dilatation balloon, the inflation device comprising:
- a housing having a chamber for containing a fluid and a plunger within the chamber for changing fluid pressure in the chamber, the housing comprising first and second members, fastening means on the first and second members for removably fastening the first and second members together to form an enclosure;
means for connecting the catheter to the housing so that the lumen of the catheter is in fluid communication with the chamber;
sensing means responsive to fluid pressure within the chamber for deriving a signal representative of fluid pressure within the chamber; and
a wireless transmitter connected to the sensing means for wireless transmission of a broadcast signal containing data representative of the signal derived by the sensing means, the wireless transmitter and sensing means comprising an electronic circuit having first and second circuit portions within the enclosure and electrical connection means connecting the first and second circuit portions together, one of the circuit portions being mechanically supported by one of the first and second members, a battery support within the enclosure for operating the electronic circuit, the fastening means permitting separation of the first and second members to permit removal of the battery, wherein the electronic circuit includes a pressure transducer mechanically supported by the first member and operatively connected to the chamber to provide an electronic signal representative of fluid pressure within the chamber, the first circuit portion being mechanically supported by the second member, said electrical connection means including a unitary frangible portion electrically connecting the transducer to the first circuit portion and so disposed and arranged as to break said frangible portion upon separation of the first and second members, and thereby electrically disconnect the transducer from the first circuit portion prohibiting use of the electrical connection means.
2 Assignments
0 Petitions
Accused Products
Abstract
An inflation device includes a syringe forming a cylindrical chamber containing a plunger carrying a stopper or piston arrangement. The chamber is designed to contain an inflation fluid and is in fluid communication with the lumen of a balloon catheter. Movement of the plunger within the chamber will increase or decrease the pressure of the fluid within the chamber and lumen, thereby inflating or deflating the balloon at the distal end of the catheter. A pressure sensor is mounted to the housing in fluid communication with the lumen and is electrically connected to a battery-operated transmitter. The transmitter broadcasts signals representing pressure within the lumen and balloon to a remote receiver. The receiver includes a microprocessor containing a clock and operable to display time and pressure data. A flexible insulator strip is interposed between the battery and the transmitter circuit to prevent operation of the transmitter until desired by the cardiologist. The housing of the inflation device may be opened to remove the batteries for separate disposal and to render the circuit inoperative to prevent reuse. A look-up table associated with the microprocessor permits display of balloon diameter during the procedure.
109 Citations
31 Claims
-
1. An inflation device for inflating a dilatation balloon of a catheter during a percutaneous transluminal angioplasty procedure, the catheter having a lumen in fluid communication with the dilatation balloon, the inflation device comprising:
-
a housing having a chamber for containing a fluid and a plunger within the chamber for changing fluid pressure in the chamber, the housing comprising first and second members, fastening means on the first and second members for removably fastening the first and second members together to form an enclosure; means for connecting the catheter to the housing so that the lumen of the catheter is in fluid communication with the chamber; sensing means responsive to fluid pressure within the chamber for deriving a signal representative of fluid pressure within the chamber; and a wireless transmitter connected to the sensing means for wireless transmission of a broadcast signal containing data representative of the signal derived by the sensing means, the wireless transmitter and sensing means comprising an electronic circuit having first and second circuit portions within the enclosure and electrical connection means connecting the first and second circuit portions together, one of the circuit portions being mechanically supported by one of the first and second members, a battery support within the enclosure for operating the electronic circuit, the fastening means permitting separation of the first and second members to permit removal of the battery, wherein the electronic circuit includes a pressure transducer mechanically supported by the first member and operatively connected to the chamber to provide an electronic signal representative of fluid pressure within the chamber, the first circuit portion being mechanically supported by the second member, said electrical connection means including a unitary frangible portion electrically connecting the transducer to the first circuit portion and so disposed and arranged as to break said frangible portion upon separation of the first and second members, and thereby electrically disconnect the transducer from the first circuit portion prohibiting use of the electrical connection means. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An inflation device for inflating a dilatation balloon of a catheter during a percutaneous transluminal angioplasty procedure, the catheter having a lumen in fluid communication with the dilatation balloon, the inflation device comprising:
-
first and second members; fastening means carried on the first and second members for removably fastening the first and second members together to form an enclosure; a chamber carried by the first member for containing a fluid; a plunger within the chamber, the plunger being operable to change fluid pressure in the chamber; means for connecting the catheter to the chamber so that the lumen of the catheter is in fluid communication with the chamber; an electronic circuit in the enclosure including sensing means responsive to fluid pressure within the chamber, the electronic circuit comprising first and second circuit portions and electrical connection means connecting the first and second circuit portions together, one of the circuit portions being mechanically supported by one of the first and second members, the electronic circuit including a pressure transducer mechanically supported by the first member and operatively connected to the chamber to provide an electronic signal representative of fluid pressure within the chamber, the first circuit portion being mechanically supported by the second member, the electrical connection means including a first unitary frangible portion electrically connecting the transducer to the first circuit portion and so disposed and arranged as to break the frangible portion upon separation of the first and second members and thereby electrically disconnect the transducer from the first circuit portion prohibiting the use of the electrical connection means; a battery supported within the enclosure for operating the electronic circuit; and the fastening means permitting separation of the first and second members to permit removal of the battery. - View Dependent Claims (8, 9, 10)
-
-
11. An inflation device for inflating a dilatation balloon of a catheter during a percutaneous transluminal angioplasty procedure, the catheter having a lumen in fluid communication with the dilatation balloon, the inflation device comprising:
-
a housing having an opening, the opening extending outside the housing; a chamber carried by the housing for containing a fluid; a plunger within the chamber, the plunger being operable to change fluid pressure in the chamber; means for connecting the catheter to the chamber so that the lumen of the catheter is in fluid communication with the chamber; an electronic circuit including sensing means responsive to fluid pressure within the chamber, the electronic circuit being located within the housing; a battery supported within the housing for operating the electronic circuit; a strip of insulator material extending through the opening and removably insulating the battery from the electronic circuit, the strip being removable to electrically connect the battery to the electronic circuit. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A monitoring system for inflating and monitoring the condition of a dilatation balloon of a catheter during a percutaneous transluminal angioplasty procedure, the catheter having a lumen in fluid communication with the dilatation balloon, the monitoring system comprising:
-
an inflation device comprising a housing supporting a chamber for containing a fluid, a plunger within the chamber for changing the pressure of fluid in the chamber, means for connecting the catheter to the chamber so that the lumen of the catheter is in fluid communication with the chamber, pressure sensing means within the housing and responsive to fluid pressure within the chamber for providing a signal representative of the fluid pressure within the chamber, and a wireless transmitter supported by the housing and connected to the circuit and responsive to the signal provided by the pressure sensing means for wireless transmission of a broadcast signal containing data representative of the fluid pressure within the chamber, the housing of the inflation device comprising first and second members, fastening means on the first and second members for removably fastening the first and second members together to form an enclosure, the wireless transmitter and sensing means comprising an electronic circuit having first and second circuit portions within the enclosure and electrical connection means connecting the first and second circuit portions together, one of the circuit portions being mechanically supported by one of the first and second members, a battery supported within the enclosure for operating the electronic circuit, the fastening means permitting separation of the first and second members to permit removal of the battery, the electronic circuit including a pressure transducer mechanically supported by the first member and operatively connected to the chamber to provide an electronic signal representative of fluid pressure within the chamber, the first circuit portion being mechanically supported by the second member, the electrical connection means including a unitary frangible portion electrically connecting the transducer to the first circuit portion and so dispose and arranged as to break the frangible portion upon separation of the first and second members and thereby electrically disconnect the transducer from the first circuit portion prohibiting use of the electrical connection means; and a remote receiver comprising a broadcast signal sensor responsive to the broadcast signal for deriving a data signal, a clock providing a clock signal, a processor connected to the broadcast signal sensor and clock for processing the data signal and the clock signal to derive information concerning pressure within the chamber and duration of inflation, and a display device connected to the processor for displaying the information derived by the processor. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
-
Specification