Disc membrane catheter for performing cystometrograms and urethral profiles

• US 4,407,301 A
• Filed: 01/27/1981
• Issued: 10/04/1983
• Est. Priority Date: 01/27/1981
• Status: Expired due to Fees

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Streisinger, Erwin
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): KRUTER, JEROME
• Application Number:
  US06/228,984
• Time in Patent Office: 980 Days
• Field of Search: 128/748, 128/780, 128/349 B, 128/325, 128/673, 128/674, 128/675, 128/748, 128/774, 128/780, 128/778, 604/100, 604/103
• US Class Current: 600/587
• CPC Class Codes: A61B 5/202 Assessing bladder functions, e.g. incontinence assessment
• CPC Class Codes: A61B 5/227 of constricting muscles, i.e. sphincters
• CPC Class Codes: A61M 25/10 Balloon catheters A61M25/0125 takes precedence; embolectomy A61B17/22032; retractors A61B17/02; inflatable balloons for placing stents or stent-grafts A61F2/958 ; stomach balloons for treatment of obesity A61F5/0003; oesophagal tubes A61J15/00
• CPC Class Codes: A61M 25/10181 Means for forcing inflation fluid into the balloon

Abstract

A diagnostic catheter for use in performing cystometrograms and urethral pressure profile tests having a shaft of conventional elastomeric construction closed at the distal end and having a CMG port adjacent to this end. An inflation lumen extends to a second port which underlies a thin inflatable member secured to the shaft up to the edges of the second port so that when inflated, the member only expands outwardly over the area of the port. Back pressure readings may be taken during catheter removal for precise location of urethral obstructions.

Claims

1. A diagnostic catheter for performing cystometrogram (CMG) and urethral pressure profile tests comprising a hollow shaft having a proximal end and a distal end, the distal end being closed, a CMG port in the shaft wall adjacent said distal end in communication with the proximal end of the shaft, an inflation outlet port in said shaft wall, an inflation lumen extending inside said shaft from said inflation outlet port to the proximal end of the shaft, a thin inflatable elastomeric member means located on the outside of said shaft and overlying said inflation outlet port and secured to said shaft about the periphery of said inflation outlet port and said means expandable outwardly only in the localized area proximal of said outlet port, and means for injection of fluid alternatively into the proximal end of the inflation lumen or to the CMG port, and means for measuring the back pressure from the same.

2. A catheter as defined in claim 1, wherein said elastomeric means is a sleeve secured completely about the catheter shaft.

3. A catheter as defined in claim 1, wherein said elastomeric member means consists of a generally rectangular patch.

4. A catheter as defined in claim 1 and further includng at least one additional inflation outlet port in said shaft in communication with said inflation lumen, said elastomeric member overlying all of said outlet ports and being secured to said shaft about the peripheries of said outlet ports.

5. A catheter as defined in claim 4, wherein a lumen is formed on the interior side wall of the shaft communicating from said CMG port to the proximal end of the shaft.

6. A catheter as defined in claim 1, wherein said inflation outlet port is of oblong configuration.

7. A catheter as defined in claim 1, wherein said inflation outlet port is proximal of said CMG port.

8. A catheter as defined in claim 1, and further including a tubular fitting on the proximal end of said shaft and having connector means therein for connection to said means for injection of fluid and for recording the back pressure.

9. A catheter as defined in claim 8, wherein said means for recording the back pressure is a chart recorder.

10. A catheter as defined in claim 8 wherein said means for injection of fluid includes a fluid reservoir, and a Y-connector means having a conduit extending therefrom and terminating in a plug means adapted for connection to said connector means, said reservoir and said means for recording the back pressure being connected to said Y-connector means.

11. A diagnostic catheter comprising a hollow shaft formed of elastomeric material and having a main lumen and at least one inflation lumen therein, the distal end of said shaft being closed and said inflation lumen extending to the proximal end of said shaft, an inflation port in the wall of said shaft and flush with the exterior surface thereof and located adjacent to the distal end and being in communication with said inflation lumen, said inflation port having a width dimension transverse to the longitudinal axis of the catheter equal to the width of the inflation lumen and a thin inflatable elastomeric member means secured firmly to said shaft and overlying said inflation port, and secured completely there about the area of securement of the inflatable member extending to the edges of said port so that the area of inflation is localized proximate to the area of the port only.

12. A catheter as defined in claim 11 wherein said port is of oblong shape.

13. A catheter as defined in claim 11 wherein the inflatable member means is a circumferential sheath.

14. A catheter as defined in claim 11 wherein said inflatable member means is of generally rectangular shape positioned lengthwise along the shaft.