US5070859A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngoscope
Assignee: NARCO-MED AG A SWISS CORP
•
Filing: 1989-10-02
•
Granted: 1991-12-10
•
Expires: 2009-10-02
Abstract
Abstract A laryngoscope (1) is equipped with a dynamometer in order to be able to measure and record the force expended per unit time by an anesthetist during the vacating and keeping unobstructed of a path in the oral and pharyngeal cavity for the introduction of a tube into the trachea. The dynamometer comprises pressure elements arranged in the spatula contact surface (17) and, respectively, in the proximity of the spatula joint. By means of this measurement, an objective judgement can be made with regard to the anesthetist's skill; on the other hand, the pharmaceuticals utilized for the intubation procedure can be objectively documented by measured values with regard to their pharmacological properties, such as, for example, the production of rapid and intense muscle relaxation.
Inventors
- 👤 Herman H. Waldvogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:41
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B5/00; A61B5/22; A61B5/224; A61B2562/00; A61B2562/02; A61B2562/0247
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A laryngoscope for endotracheal intubation comprising, an elongated blade shaped to fit into the oral pharynx of a patient and having a concave formed inner side for depressing the retrolingual region, a handle connected to said blade, a dynamometer having a force measuring element, said force measuring element connected on said concave formed inner side for measuring the force expended for vacating and keeping unobstructed a path for a tube to be introduced into the trachea, and said dynamometer having recording or storing means connected with said force measuring element for recording or storing the measured force in dependence of the time for determining the skill of the anesthetist and the effect of the applied anesthetic.
Claim 2
Dependent Claim
116 words
A laryngoscope for endotracheal intubation comprising, an elongated blade shaped to fit into the oral pharynx of a patient and having a concave formed inner side for depressing the retrolingual region, a handle connected to said blade, a dynamometer having a force measuring element, said force measuring element connected on said concave formed inner side for measuring the force expended for vacating and keeping unobstructed a path for a tube to be introduced into the trachea, and said dynamometer having recording or storing means connected with said force measuring element for recording or storing the measured force in dependence of the time for determining the skill of the anesthetist and the effect of the applied anesthetic.
Claim 3
Dependent Claim
85 words
A laryngoscope according to claim 1, wherein said concave formed inner side of said blade includes a cavity, said force measuring element being a piezoelectrical force measuring element connected at the bottom of said cavity, and a movable contact plate fitted in said cavity in said concave formed inner side of said blade and covering said piezoelectrical force measuring element for transmitting thereto the force expended by said blade for vacating and keeping unobstructed the path for a tube to be introduced into the trachea.
Claim 4
Dependent Claim
73 words
A laryngoscope according to claim 1 or 2, wherein said laryngoscope includes a battery, said battery and said recording or storing means being displaced in said handle, a display connected to said dynamometer for displaying the instantaneous measured force, an external device, and an interface having connecting means for connecting said interface to said external device to transfer the data recorded or stored by said recording storing means thereto after an endotracheal intubation.
Claim 5
Dependent Claim
166 words
A laryngoscope for endotracheal intubation comprising, an elongated blade shaped to fit into the oral pharynx of a patient, a handle, pivot means pivotally connecting said blade at one end of said handle, a deflection stop between said blade and said handle limiting the pivoting of said blade away from said handle, a dynamometer having a force measuring element, said force measuring element connected on said deflection stop to have pressure applied thereto when said blade is pivoted away from said handle towards the limit of said deflection stop upon introduction of said blade into the oral pharynx of the patient, said force measuring element for measuring the force expended for vacating and keeping unobstructed a path for a tube to be introduced into the trachea, and said dynamometer including recording or storing means connected with said force measuring element for recording or storing the measured force in dependence of the time for determining the skill of the anesthetist and the effect of the applied anesthetic.
Claim 6
Dependent Claim
166 words
A laryngoscope for endotracheal intubation comprising, an elongated blade shaped to fit into the oral pharynx of a patient, a handle, pivot means pivotally connecting said blade at one end of said handle, a deflection stop between said blade and said handle limiting the pivoting of said blade away from said handle, a dynamometer having a force measuring element, said force measuring element connected on said deflection stop to have pressure applied thereto when said blade is pivoted away from said handle towards the limit of said deflection stop upon introduction of said blade into the oral pharynx of the patient, said force measuring element for measuring the force expended for vacating and keeping unobstructed a path for a tube to be introduced into the trachea, and said dynamometer including recording or storing means connected with said force measuring element for recording or storing the measured force in dependence of the time for determining the skill of the anesthetist and the effect of the applied anesthetic.
Claim 7
Dependent Claim
72 words
A laryngoscope according to claim 4, wherein said laryngoscope includes a battery, said battery and said recording or storing means being displaced in said handle, a display connected with said dynamometer for displaying the instantaneous measured force, an external device, and an interface having connecting means for connecting said interface to said external device to transfer the data recorded or stored by said recording or storing means thereto after an endotracheal intubation.
References Cited (Backward Citations)
US3785381A
Cited
US3888117A
Cited
US4384570A
Cited
US4263900A
Cited
US4295465A
Cited
US4426884A
Cited
US4556052A
Cited
US4488873A
Cited
US4884223A
Cited
US4791940A
Cited
US4841987A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-12-09 | 1995-06-10 | 1995-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-09 | 1999-06-10 | 1999-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-09 | 2003-06-10 | 2003-12-10 | $7700.00 | Window Closed / Lapsed |