Syringe apparatus with attached pressure gauge and timer

• US 5,259,838 A
• Filed: 06/18/1992
• Issued: 11/09/1993
• Est. Priority Date: 06/18/1992
• Status: Expired due to Term

• Current Assignee: Merit Medical Systems, Inc.
• Original Assignee: Merit Medical Systems, Inc.
• Inventors: Lampropoulos, Fred P., Taylor, Steven R., Stout, Thomas D., Smith, A. Tony
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): Gutowski, Anthony
• Application Number:
  US07/900,987
• Time in Patent Office: 509 Days
• Field of Search: 604/96-100, 604/208-211, 604/224
• US Class Current: 604/97.03
• CPC Class Codes: A61M 2205/50 with microprocessors or computers
• CPC Class Codes: A61M 25/10182 Injector syringes
• CPC Class Codes: A61M 25/10187 Indicators for the level of inflation or deflation
• CPC Class Codes: A61M 25/10188 Inflation or deflation data displays

Abstract

A syringe apparatus for use with balloon-tipped catheters is disclosed having an attached pressure gauge and timer assembly. In one mode, the timer assembly displays the duration of a current event of inflation or deflation, and the duration of the most recent past event of inflation or deflation. In another mode, the timer assembly displays historical information showing the event number and duration of past events of inflation and deflation. The pressure gauge display and the timer assembly display are situated conveniently on the syringe assembly and in proximity to one another so as to enable a syringe operator to substantially simultaneously monitor durations of inflation and deflation without the need for an assistant, yet without requiring purchase or use of computerized monitors.

Claims

1. An apparatus for use in inflating a balloon-tipped catheter, comprising:

a syringe assembly capable of generating sufficient pressure to inflate a balloon-tipped catheter;

a pressure gauge means attached to the syringe assembly having a pressure display for measuring and displaying the pressure generated by the syringe assembly; and

a timer assembly attached to the syringe assembly for measuring durations of separate events of inflation and deflation of the balloon-tipped catheter, said timer assembly including;

display means for visually displaying the duration of time which has passed since commencement of a current event of inflation or deflation and wherein the display means further includes a display showing the duration of the immediate past event of inflation or deflation; and

first actuating means for commencing the timing of the duration of each successive event of inflation and deflation.

2. An apparatus as defined in claim 1, wherein the display showing the duration of the immediate past event of inflation or deflation further includes a display indicator labeling the display of the immediate past event of inflation or deflation as being a past event.

3. An apparatus as defined in claim 1 further display means further includes a display identifying the current event as being an inflation or a deflation.

4. An apparatus as defined in claim 1 further comprising:

memory means for storing the duration of each event of inflation and deflation; and

second actuating means for displaying the historical duration of each event of inflation and deflation.

5. An apparatus as defined in claim 4, wherein the duration and event number of the immediate past event of inflation or deflation is displayed by actuating the second actuating means, and wherein the duration and event numbers of additional past events are successively displayed by successive activations of the first actuating means.

6. An apparatus as defined in claim 4, wherein the first actuating means comprises separate means for commencing the timing of inflations and means for commencing the timing of deflations, and wherein the duration and event number of the immediate past event of inflation or deflation is displayed by actuating the second actuating means, and wherein the duration and event numbers of additional past events are successively displayed by successive activations of either of the means for commencing the timing of inflations or the means for commencing the timing of deflations.

7. An apparatus as defined in claim 4, wherein the first actuating means comprises a button which stops the timing of the current event and causes the total duration of that event to be stored in said memory means, and also starts the timing of the next succeeding event.

8. An apparatus as defined in claim 1 wherein the timer assembly display means is located in proximity to the pressure gauge display and is oriented so as to permit an operator of the syringe assembly to substantially simultaneously monitor the pressure within the syringe assembly and the data displayed on the timer assembly display means.

9. An apparatus as defined in claim 1 wherein the timer assembly first actuating means is located at a position in proximity with the timer assembly display means and the pressure gauge display, so as to permit an operator of the syringe assembly to easily actuate such actuating means while substantially simultaneously monitoring the pressure gauge display and the timer assembly display.

10. An apparatus as defined in claim 1, wherein the display is a liquid crystal display having a series of electrical contacts along the sides thereof, and wherein a pair of zebra strips is used to complete an electrical contact between the liquid crystal display and electronic timing means.

11. A syringe apparatus for use in inflating a balloon-tipped catheter, comprising:

a syringe assembly capable of generating sufficient pressure to inflate a balloon-tipped catheter;

a pressure gauge means attached to the syringe assembly having a pressure display for measuring and displaying the pressure generated by the syringe assembly;

a timer assembly attached to the syringe assembly for measuring durations of separate events of inflation and deflation of the balloon-tipped catheter, said timer assembly including;

display means for visually displaying the duration of time which has passed since commencement of a current event of inflation or deflation and the duration of the immediate past event of inflation or deflation;

first actuating means for commencing the timing of the duration of each successive event of inflation and deflation;

memory means for storing the duration of each event of inflation and deflation;

second actuating means for displaying the duration of prior events of inflation and deflation; and

indicator means for labeling the display of an immediate past event of inflation or deflation as being a past event when the second actuating means is actuated, and for labeling the event number of past events when the second actuating means is actuated.

12. An apparatus as defined in claim 11 wherein the timer assembly display means is located in proximity to the pressure gauge display and is oriented so as to permit an operator of the syringe assembly to substantially simultaneously monitor the pressure within the syringe assembly and the data displayed on the timer assembly display means.

13. An apparatus as defined in claim 11 wherein the timer assembly first actuating means is located at a position in proximity with the timer assembly display means and the pressure gauge display, so as to permit an operator of the syringe assembly to easily actuate such actuating means while substantially simultaneously monitoring the pressure gauge display and the timer assembly display.

14. An apparatus as defined in claim 11 wherein the first actuating means comprises a start/stop button which functions to terminate the timing of an event of inflation or deflation and also to commence the timing of a successive event of inflation or deflation.

15. An apparatus as defined in claim 11 wherein the first actuating means comprises a first button for commencing the timing of inflation events, and a second button for commencing the timing of deflation events, each of said first and second buttons also serving to terminate the timing of a previous event of deflation or inflation.

16. An apparatus as defined in claim 15, wherein the first button serves to terminate the timing of a deflation event and commence the timing of an inflation event, but has no function if the current event is an inflation event;

and wherein the second button serves to terminate the timing of an inflation event and commence the timing of a deflation event, but has no function if the current event is a deflation event.

17. An apparatus for use in inflating a balloon-tipped catheter, comprising:

a syringe assembly capable of generating sufficient pressure to inflate a balloon-tipped catheter;

a pressure gauge means attached to the syringe assembly having a pressure display for measuring and displaying the pressure generated by the syringe assembly; and

a timer assembly attached to the syringe assembly for measuring durations of separate events of inflation and deflation of the balloon-tipped catheter, said timer assembly including;

display means for visually displaying the duration of time which has passed since commencement of a current event of inflation or deflation and wherein the display means further includes a display identifying the current event as being an inflation or a deflation; and

first actuating means for commencing the timing of the duration of each successive event of inflation and deflation.

18. An apparatus for use in inflating a balloon-tipped catheter, comprising:

a syringe assembly capable of generating sufficient pressure to inflate a balloon-tipped catheter;

a pressure gauge means attached to the syringe assembly having a pressure display for measuring and displaying the pressure generated by the syringe assembly; and

a timer assembly attached to the syringe assembly for measuring durations of separate events of inflation and deflation of the balloon-tipped catheter, said timer assembly including;

display means for visually displaying the duration of time which has passed since commencement of a current event of inflation or deflation;

first actuating means for commencing the timing of the duration of each successive event of inflation and deflation;

memory means for storing the duration of each event of inflation and deflation; and

second actuating means for displaying the historical duration of each event of inflation and deflation.