US4030481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manometric pressure sensing and liquid evacuating device for intraoperative hiatal hernia repair
Assignee: Individual
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Filing: 1975-10-29
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Granted: 1977-06-21
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Expires: 1995-10-29
Abstract
Abstract A device for making intraoperative pressure studies after repair but while the stomach is being evacuated. The device includes a nasal gastric suction tube having a perforated end region with a closed tip and having secured thereto a pressure-sensing tube with a closed end and which is provided with a pressure-sensing opening a known distance up from the closed tip of the nasal gastric tube.
Inventors
- 👤 Lucius D. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:39
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/03; A61B5/036; A61B5/037; A61B5/42; A61B5/4222; A61B5/4238; A61M; A61M25/00; A61M25/0067; A61M25/0068; A61M25/007; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/0037; A61M25/003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A pressure-sensing and liquid-evacuating device for measuring sphincter pressure during intraoperative hiatal hernia repair operations, comprising: a nasal gastric suction tube for emptying liquids from the stomach and having a tip, a plurality of openings adjacent the tip for allowing passage of liquids into the tube, and an open upper end adapted to be connected to a vacuum source, and a smaller, soft, flexible pressure-sensing tube secured to said nasal gastric suction tube and having an uncovered, pressure-sensing single opening located externally of the nasal gastric suction tube and a short distance from the tip of said nasal gastric suction tube, with the pressure sensing opening adapted to be exposed directly to the interior of the stomach or esophagus, and engagable by the sphincter muscle whereby the pressure of the stomach, sphincter muscle and esophagus can be sensed immediately following the repair while simultaneously removing liquid from the stomach.
Claim 2
Dependent Claim
149 words
A pressure-sensing and liquid-evacuating device for measuring sphincter pressure during intraoperative hiatal hernia repair operations, comprising: a nasal gastric suction tube for emptying liquids from the stomach and having a tip, a plurality of openings adjacent the tip for allowing passage of liquids into the tube, and an open upper end adapted to be connected to a vacuum source, and a smaller, soft, flexible pressure-sensing tube secured to said nasal gastric suction tube and having an uncovered, pressure-sensing single opening located externally of the nasal gastric suction tube and a short distance from the tip of said nasal gastric suction tube, with the pressure sensing opening adapted to be exposed directly to the interior of the stomach or esophagus, and engagable by the sphincter muscle whereby the pressure of the stomach, sphincter muscle and esophagus can be sensed immediately following the repair while simultaneously removing liquid from the stomach.
Claim 3
Dependent Claim
34 words
The device of claim 1, said pressure-sensing tube being closed below said single opening and said pressure-sensing tube having an end spaced from the single opening and terminating within the nasal gastric suction tube.
Claim 4
Dependent Claim
160 words
A pressure-sensing and liquid-evacuating device for measuring sphincter pressure during intraoperative hiatal hernia repair operations, comprising: a nasal gastric suction tube for emptying liquids from the stomach and having a tip, a plurality of openings adjacent the tip for allowing passage of liquids into the tube, and an open upper end adapted to be connected to a vacuum source, and a smaller, soft, flexible pressure-sensing tube secured to said nasal gastric suction tube and having a pressure-sensing opening located a short distance from the tip of said nasal gastric suction tube whereby the pressure of the stomach, sphincter muscle and esophagus can be sensed immediately following the repair while simultaneously removing liquid from the stomach, said pressure-sensing opening being located a known distance up from the tip of the suction tube so that the location of the pressure-sensing opening in the gastroesophageal junction can be accurately determined by sensing the location of the tip of the nasal gastric suction tube.
Claim 5
Dependent Claim
160 words
A pressure-sensing and liquid-evacuating device for measuring sphincter pressure during intraoperative hiatal hernia repair operations, comprising: a nasal gastric suction tube for emptying liquids from the stomach and having a tip, a plurality of openings adjacent the tip for allowing passage of liquids into the tube, and an open upper end adapted to be connected to a vacuum source, and a smaller, soft, flexible pressure-sensing tube secured to said nasal gastric suction tube and having a pressure-sensing opening located a short distance from the tip of said nasal gastric suction tube whereby the pressure of the stomach, sphincter muscle and esophagus can be sensed immediately following the repair while simultaneously removing liquid from the stomach, said pressure-sensing opening being located a known distance up from the tip of the suction tube so that the location of the pressure-sensing opening in the gastroesophageal junction can be accurately determined by sensing the location of the tip of the nasal gastric suction tube.
Claim 6
Independent Claim
142 words
A method of using a pressure-sensing tube for intraoperative hiatal hernia repair, comprising inserting into the patient's stomach a pressure-sensing tube with a pressure-sensing opening a short known distance up from the closed tip of a nasal gastric suction tube, continuously removing liquids from the stomach and as a result bringing the internal stomach pressure to a reduced pressure of about 20 millimeters of mercury, irrigating the pressure-sensing opening to keep it open and clean, repairing the hiatal hernia, and while the incision is still opened, slowly withdrawing the pressure-sensing tube while observing the pressure reading until the pressure-sensing opening is located at the sphincter muscle and specifically observing a lower esophageal sphincter pressure of 35-55 millimeters of mercury to assure a postoperative sphincter pressure of about 22-25 millimeters of mercury at a normal internal stomach pressure assuring a sufficiently tight repair.
Claim 7
Independent Claim
142 words
A method of using a pressure-sensing tube for intraoperative hiatal hernia repair, comprising inserting into the patient's stomach a pressure-sensing tube with a pressure-sensing opening a short known distance up from the closed tip of a nasal gastric suction tube, continuously removing liquids from the stomach and as a result bringing the internal stomach pressure to a reduced pressure of about 20 millimeters of mercury, irrigating the pressure-sensing opening to keep it open and clean, repairing the hiatal hernia, and while the incision is still opened, slowly withdrawing the pressure-sensing tube while observing the pressure reading until the pressure-sensing opening is located at the sphincter muscle and specifically observing a lower esophageal sphincter pressure of 35-55 millimeters of mercury to assure a postoperative sphincter pressure of about 22-25 millimeters of mercury at a normal internal stomach pressure assuring a sufficiently tight repair.
Claim 8
Dependent Claim
27 words
The method of claim 4, wherein the pressure-sensing tube is secured to a nasal gastric suction tube for combining the continuous liquid removal with the pressure sensing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-06-20 | 1980-12-20 | 1981-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-20 | 1984-12-20 | 1985-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-20 | 1988-12-20 | 1989-06-21 | $7700.00 | Window Closed / Lapsed |