Patent US4565194A successfully refreshed from Google Patents.
US4565194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tracheal tube for artificial respiration
Assignee: Draegerwerk AG and Co KGaA
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Filing: 1983-10-03
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Granted: 1986-01-21
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Expires: 2003-10-03
Abstract
Abstract A tracheal tube (1) for giving artificial respiration to a patient comprises a balloon cuff (7) for sealing. The respiration gas is blown in by producing excess pressure, and taken off by producing underpressure, in a respiration tube (11) having a relatively small diameter. To monitor the intratracheal pressure in the closed respiratory system, a pressure measuring cannula (14) is provided, so that a respiration within the desired intratracheal pressure range can be ensured, through an electronic control device (29), by a respirator (13) operating to blow in an exhaust respiratory gas.
Inventors
- 👤 Hilko Weerda
- 👤 Gerhard Meuret
- 👤 Peter Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:03
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0003; A61M16/0009; A61M16/0051; A61M16/0096; A61M16/021; A61M16/022; A61M16/0434; A61M16/044; A61M16/0486; A61M16/08; A61M16/0816; A61M16/0841; A61M16/0858; A61M16/20; A61M16/201; A61M16/202; A61M16/203; A61M16/204; A61M16/205; A61M16/10; A61M16/105; A61M16/106; A61M16/107; A61M16/208; A61M16/209; A61M2016/0027; A61M2016/003; A61M2016/0033; A61M2016/0039; A61M2016/0042; A61M2205/00; A61M2205/17
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
178 words
A respirator for giving artificial respiration to a patient, particularly in endolaryngeal surgery, comprising a tracheal tube having an open distal end and a closed proximal end, a balloon cuff surrounding the tracheal tube adjacent its distal end which is to be introduced, to an inflating cannula connected to said cuff, and a respiration tube extending into said tracheal tube through its proximal end and which terminates in the tracheal tube adjacent the distal end for injection ventilation, said distal end being sealed about said respiration tube, a pressure measuring cannula (14) extending into the interior (5) of the tracheal tube (2), said tracheal tube being sealed about said pressure measuring cannula, and a control device connected to said respiration tube and said pressure measuring cannula and including means for producing an excess pressure during the inspiration phase and an underpressure during the expiration phase in said respiration tube of said tracheal tube, when fixed in said trachea, in response to intratracheal pressure being measurable through the pressure measuring cannula and evaluatable for purposes of controlling the respirator.
Claim 2
Dependent Claim
178 words
A respirator for giving artificial respiration to a patient, particularly in endolaryngeal surgery, comprising a tracheal tube having an open distal end and a closed proximal end, a balloon cuff surrounding the tracheal tube adjacent its distal end which is to be introduced, to an inflating cannula connected to said cuff, and a respiration tube extending into said tracheal tube through its proximal end and which terminates in the tracheal tube adjacent the distal end for injection ventilation, said distal end being sealed about said respiration tube, a pressure measuring cannula (14) extending into the interior (5) of the tracheal tube (2), said tracheal tube being sealed about said pressure measuring cannula, and a control device connected to said respiration tube and said pressure measuring cannula and including means for producing an excess pressure during the inspiration phase and an underpressure during the expiration phase in said respiration tube of said tracheal tube, when fixed in said trachea, in response to intratracheal pressure being measurable through the pressure measuring cannula and evaluatable for purposes of controlling the respirator.
Claim 3
Dependent Claim
47 words
A respirator according to claim 1, characterized in that both in the excess pressure branch (20) and the underpressure branch (21) a throttle valve (24,41) a volumometer (25,40), and a shutoff valve (26,29) are provided, with all of them being individually connected to the control device (29).
Claim 4
Dependent Claim
32 words
A respirator according to claim 1, characterized in that a manometer (32) connected to the pressure measuring cannula (14) produces through a converter a control signal (33) for the control device (29).
Claim 5
Dependent Claim
42 words
A respirator according to claim 3, characterized in that for a redundant determination of the intratracheal pressure a manometer (34) is provided at the inflating cannula (8), which is connected to one of the control inputs (36) of the control device (29).
Claim 6
Dependent Claim
48 words
A respirator according to one of claims 1, characterized in that a shutoff valve (35) is provided in the line to the inflating cannula (8), by which, at certain disturbances and through the control device (29), the closed respiratory system can be switched into an open respiratory system.
Claim 7
Dependent Claim
31 words
A respirator according to one of claims 1, characterized in that an alarm (47) is provided which can be made effective by the control device (29) upon exceeding determined limit values.
Claim 8
Dependent Claim
32 words
A respirator according to claim 1 wherein the control device (29) comprises setting members (45) for the respiration frequency, the inspiratory respiration minutes-volume, and the amount of the PEEP(positive end expiration pressure).
Claim 9
Dependent Claim
127 words
A tracheal tube connection for giving artificial respiration to a patient, comprising a tracheal tube having an open distal end insertable into a patient's trachea and an opposite closed proximal end, a balloon cuff extending around and connected to the exterior of said tube adjacent said distal end, an inflation cannula connected into said cuff for inflating said cuff to seal the exterior of said tracheal tube with the person's trachea, a respiratory line having means for providing both positive inhalation pressure and negative exhalation pressure connected through said proximal end of said tube, said proximal end of said tracheal tube being sealed around said respiratory line, and a pressure measuring cannula extending into said tracheal tube, said tracheal tube being sealed about said pressure measuring cannula.
Claim 10
Dependent Claim
127 words
A tracheal tube connection for giving artificial respiration to a patient, comprising a tracheal tube having an open distal end insertable into a patient's trachea and an opposite closed proximal end, a balloon cuff extending around and connected to the exterior of said tube adjacent said distal end, an inflation cannula connected into said cuff for inflating said cuff to seal the exterior of said tracheal tube with the person's trachea, a respiratory line having means for providing both positive inhalation pressure and negative exhalation pressure connected through said proximal end of said tube, said proximal end of said tracheal tube being sealed around said respiratory line, and a pressure measuring cannula extending into said tracheal tube, said tracheal tube being sealed about said pressure measuring cannula.
Claim 11
Dependent Claim
57 words
A tracheal tube according to claim 8, characterized in that said pressure measuring cannula extends into said tracheal tube through said proximal end and that the proximal end (10) of the tracheal tube (1,2) the respiration tube (11), the pressure measuring cannula (14), and the inflating cannula (8) are welded to each other in a sealing manner.
Claim 12
Dependent Claim
40 words
A tracheal tube according to claim 9, characterized in that the respiration tube (11), the pressure measuring cannula (14) and the inflating cannula (8) are welded to each other over a predetermined length, and form a flexible bundle of tubes.
Claim 13
Dependent Claim
33 words
A tracheal tube according to claim 10, characterized in that the diameter of the tracheal tube at the proximal end thereof is larger than the cross section of said bundle of tubes (8,11,14).
Claim 14
Dependent Claim
31 words
A tracheal tube according to claim 8, characterized in that the respiration tube (11) has an internal diameter of about 3 mm, and the pressure measuring cannula of abount 1 mm.
Claim 15
Dependent Claim
28 words
A tracheal tube according to claim 8, wherein the respiration tube (11) projects into the interior of the tracheal tube (1,2) farther than the pressure measuring cannula (14).
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) | 1989-01-20 | 1989-07-22 | 1990-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-01-20 | 1993-07-22 | 1994-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-01-20 | 1997-07-22 | 1998-01-21 | $7700.00 | Window Closed / Lapsed |