Balloon catheter pressure monitor for local and remote display

• US 5,368,565 A
• Filed: 09/28/1992
• Issued: 11/29/1994
• Est. Priority Date: 09/28/1992
• Status: Expired due to Term

• Current Assignee: Medex Incorporated (Smiths Group International Holdings Ltd.)
• Original Assignee: Medex Incorporated (Smiths Group International Holdings Ltd.)
• Inventors: DeLong, Russell I.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US07/952,915
• Time in Patent Office: 792 Days
• Field of Search: 604/97-100, 604/67, 606/192, 606/194
• US Class Current: 604/100.03
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 25/10184 Means for controlling or monitoring inflation or deflation
• CPC Class Codes: A61M 25/10188 Inflation or deflation data displays

Abstract

Balloon catheter pressure monitor modules are provided with parallel connectors for daisy-chaining interchangeable modules such that pressure may be locally and remotely displayed and further for providing local and remote control of the processing circuity of the modules.

Claims

1. A balloon catheter pressure monitoring module adapted for remote and local display of pressure in a balloon catheter comprising:

circuit means for processing a transducer signal communicated from a pressure transducer in fluid communication with the balloon catheter, the circuit means including display means for displaying pressure corresponding to the communicated transducer signals; and

first and second connector means each for connecting to respective cables, each connector means having first contact means for communicating transducer signals, respective first contact means of each connector means being coupled to one another and to the circuit means such that a first cable coupled to a pressure transducer generating a transducer signal may be plugged into the first connector means to communicate the transducer signal to the circuit means for local display of pressure, and such that a second cable may be plugged into the second connector means to communicate the transducer signal to a remote pressure monitoring module for remote display of pressure corresponding to the transducer signal.

2. The pressure monitoring module of claim 1 wherein the circuit means includes timer means for determining duration of pressurization of the balloon catheter, the display means further for displaying the duration, the timer means being reset in response to a reset signal, the second connector means further having second contact means coupled to the circuit means for communicating a reset signal such that the reset signal for resetting the timer means will also be communicated through the second cable to the remote pressure monitoring module.

3. The pressure monitoring module of claim 2 further comprising switch means communicating with the circuit means for generating the reset signal.

4. The pressure monitoring module of claim 2, the first connector means further having second contact means coupled to the circuit means and the second contact means of the second connector means for communicating a reset signal such that the reset signal may be provided via the first cable.

5. The pressure monitoring module of claim 4 further comprising the first cable and, coupled to the cable, switch means for generating the reset signal.

6. The pressure monitoring module of claim 1 wherein the circuit means includes control means for modifying operation of the circuit means when the control means is activated, the control means being activated in response to a control signal, the second connector means further having second contact means coupled to the circuit means for communicating a control signal such that the control signal for activating the circuit means will also be communicated through the second cable to the remote pressure monitoring module.

7. The pressure monitoring module of claim 6 further comprising switch means communicating with the circuit means for generating the control signal.

8. The pressure monitoring module of claim 6, the first connector means further having second contact means coupled to the circuit means and the second contact means of the second connector means for communicating a control signal such that the control signal may be provided via the first cable.

9. The pressure monitoring module of claim 8 further comprising the first cable and, coupled to the cable, switch means for generating the control signal.

10. The pressure monitoring module of claim 6 wherein the control means includes verifier means for verifying operation of the circuit means when activated by the control means such that the display means displays a pressure offset by a known amount when the circuit means is operating properly.

11. The pressure monitoring module of claim 6 wherein the control means includes auto-zero means for zeroing the circuit means such that the display means reads zero at ambient pressure when the control means is activated.

12. In combination, local and remote balloon catheter pressure monitoring modules each adapted for display of pressure in a balloon catheter, each pressure monitoring module comprising:

circuit means for processing a transducer signal communicated from a pressure transducer in fluid communication with the balloon catheter, the circuit means including display means for displaying pressure corresponding to the communicated transducer signals; and

first and second connector means for connecting to a first cable and a second cable, respectively, each connector means having first contact means for communicating transducer signals, respective first contact means of each connector means being coupled to one another and to the circuit means such that a first cable coupled to a pressure transducer generating a transducer signal may be plugged into the first connector means to communicate the transducer signal to the circuit means for local display of pressure, and such that a second cable may be plugged into the second connector means to communicate the transducer signal to the second connector means of the other pressure monitoring module for remote display of pressure corresponding to the transducer signal.

13. The pressure monitoring modules of claim 12 wherein each of the circuit means includes timer means for determining duration of pressurization of the balloon catheter, the respective display means further for displaying the duration, the timer means being reset in response to a reset signal, the second connector means further having second contact means coupled to the circuit means for communicating a reset signal such that the reset signal from one of the modules will also be communicated through the second cable to the other of the modules.

14. The pressure monitoring modules of claim 13 each further comprising switch means communicating with the respective circuit means for generating the reset signal.

15. The pressure monitoring modules of claim 13, the first connector means further having second contact means coupled to the circuit means and the second contact means of the second connector means for communicating a reset signal such that the reset signal may be provided via the first cable.

16. The pressure monitoring modules of claim 15, further comprising the first cable and, coupled to the cable, switch means for generating the reset signal.

17. The pressure monitoring modules of claim 12 wherein each of the circuit means includes control means for modifying operation of the respective circuit means when the control means is activated, the control means being activated in response to a control signal, the second connector means further having second contact means coupled to the circuit means for communicating a control signal such that the control signal for activating the circuit means from one of the modules will also be communicated through the second cable to the other of the modules.

18. The pressure monitoring modules of claim 17, each further comprising switch means communicating with the respective circuit means for generating the control signal.

19. The pressure monitoring modules of claim 17, the first connector means each further having second contact means coupled to the circuit means and the second contact means of the second connector means for communicating a control signal such that the control signal may be provided via the first cable.

20. The pressure monitoring module of claim 19 further comprising the first cable and, coupled to the cable, switch means for generating the control signal.

21. The pressure monitoring modules of claim 17 wherein each of the control means includes verifier means for verifying operation of the respective circuit means when actuated by the control signal such that the respective display means displays a pressure offset by a known amount when the respective circuit means is operating properly.

22. The pressure monitoring modules of claim 17 wherein each of the control means includes auto-zero means for zeroing the respective circuit means when the control means is activated such that the respective display means reads zero at ambient pressure.

23. The pressure monitoring modules of claim 12 wherein each of the circuit means includes means for converting the transducer signal to pressure in selected units of pressure and means for selecting the units of pressure, the respective display means displaying pressure in the selected units of pressure whereby pressure may be displayed simultaneously in different units of pressure on the respective modules.

24. The pressure monitor modules of claim 23 wherein the respective means for converting the transducer signal to pressure includes means for converting the transducer signal to pressure in units of one of PSI and atmospheres.

25. The pressure monitor modules of claim 12 further comprising the second cable interconnecting the second connector means of the modules.