Pivoting laryngoscope having a power-driven curved spatula

• US 5,584,795 A
• Filed: 12/06/1994
• Issued: 12/17/1996
• Est. Priority Date: 12/13/1991
• Status: Expired due to Fees

• Current Assignee: Elio Valenti
• Original Assignee: Elio Valenti
• Inventors: Valenti, Elio
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): MCGLASHEN, KELL
• Application Number:
  US08/244,814
• Time in Patent Office: 742 Days
• Field of Search: 600/109, 600/118, 600/146, 600/190, 600/194, 600/197, 600/199
• US Class Current: 600/196
• CPC Class Codes: A61B 1/00034 rechargeable
• CPC Class Codes: A61B 1/042 characterised by a proximal camera, e.g. a CCD camera
• CPC Class Codes: A61B 1/07 using light-conductive means, e.g. optical fibres
• CPC Class Codes: A61B 1/267 for the respiratory tract, e.g. laryngoscopes, bronchoscopes

Abstract

A pivoting laryngoscope has a power-driven spatula for performing intubation in patients. The laryngoscope includes a handle for gripping the laryngoscope, and a curved spatula blade having one end connected to the handle. The spatula blade is subdivided into a plurality of adjacent, sequentially arranged sections. At least two of the sections are pivotally connected together at a fulcrum. A motorization assembly is located within the handle and is activatable for generating movement. A motion transmission assembly operatively connects the motorization assembly to at least one of the sections for transmitting the movement of the motorization assembly to the section, whereby the section is moved relative to the fulcrum and within a predetermined arc, thereby changing a curvature of the curved spatula blade.

Claims

1. A pivoting laryngoscope having a power-driven spatula for performing intubation in patients, comprising:

a handle for gripping the laryngoscope;

a curved spatula blade having one end connected to said handle, and being subdivided into a plurality of adjacent, sequentially arranged sections, at least two of said sections being pivotally connected together at a fulcrum;

motorization means located within said handle and being activatable for generating a movement; and

motion transmission means operatively connecting said motorization means to at least one of said sections for transmitting the movement of said motorization means to said at least one section, whereby said at least one section is moved relative to the fulcrum and within a predetermined arc, thereby changing a curvature of said curved spatula blade.

2. The pivoting laryngoscope defined in claim 1, wherein said motorization means comprises:

power means operatively connected to said at least one section via said motion transmission means for generating the movement to move said at least one section;

power feeding means electrically connected to said power means for feeding said power means with power; and

operating means electrically connected to said power means and said power feeding means for activating said power means.

3. The pivoting laryngoscope defined in claim 1, wherein one of said sections forms an end of said curved spatula blade, said one section having a free, terminal end with a circular cross-section.

4. The pivoting laryngoscope defined in claim 1, wherein said curved spatula blade is flattened.

5. The pivoting laryngoscope defined in claim 1, wherein said handle has a longitudinal central axis and is hollow, said handle including a superior end having said curved spatula blade attached thereto, a central portion adjacent to the superior end and having a rectangular cross-section viewed perpendicular to the axis, said central portion being narrow relative to the superior end for the gripping of the laryngoscope, said handle further having an inferior end adjacent to the central portion and being symmetrical to the superior end.

6. The pivoting laryngoscope defined in claim 2, wherein said power means comprises an electric motor, and said power feeding means comprises at least one rechargeable battery for feeding said electric motor with a direct current.

7. The pivoting laryngoscope defined in claim 2, wherein said power means comprises an electric motor, said operating means activating said electric motor to generate the movement to move said at least one section via said motion transmission means.

8. The pivoting laryngoscope defined in claim 1, wherein said at least two sections comprise a first and second section pivotally connected together at a first pivot point, and wherein said plurality of sections includes a third section pivotally connected to the second section at a second pivot point, said sections being individually rotatable about their respective pivot points, whereby a progressive rotation of said sections adjustably and reversibly changes the curvature of said curved spatula blade within the predetermined arc.

9. The pivoting laryngoscope defined in claim 1, wherein said motion transmission means comprises:

a rotatable transmission shaft having a first end connected to said motorization means, and a second, threaded end;

a tubular tang having a threaded hole receiving said threaded end; and

a plurality of transmission elements connecting said tubular tang with said curved spatula blade, wherein rotation of said transmission shaft by said motorization means causes said tubular tang to move along a stroke path, thereby moving said transmission elements and said curved spatula blade.

10. The pivoting laryngoscope defined in claim 9, wherein said transmission elements comprise a pivotable elbow plate having a first end hinged to said tubular tang, a first extension shaft having a first end hinged to a second end of said elbow plate, and a second extension shaft having a first end hinged to a second end of said first extension shaft, said second extension shaft having a second end hinged to one of said sections of said curved spatula blade;

wherein moving said tubular tang along the stroke path causes said elbow plate to pivot, thereby causing said first extension shaft to move in a linear direction, and causing said at least one section to move within the predetermined arc.

11. The pivoting laryngoscope defined in claim 1, wherein one of said pivotally connected sections comprises a first semi-circular plate integrally formed therewith, said first plate having a radial ring-shaped groove formed therein, and wherein the other of said pivotally connected sections comprises a second semi-circular plate integrally formed therewith, said second plate having a radial ring-shaped ledge formed thereon and projecting into the ring-shaped groove to pivotally connect said sections together.

12. The pivoting laryngoscope defined in claim 11, wherein said plurality of sections includes at least three sections pivotally connected together, each pair of adjacent sections being pivotally connected together using a respective first semi-circular plate and a second semi-circular plate.

13. The pivoting laryngoscope defined in claim 1, wherein one of said sections forms an end of said curved spatula blade, said one section having a performing element formed thereon, said performing element having a free, terminal end;

further comprising an illuminating device located on said terminal end.

14. The pivoting laryngoscope defined in claim 13, wherein said terminal end has an opening therein for accommodating an optical fiber system or a laser sheaf.

15. The pivoting laryngoscope defined in claim 13, further comprising a rechargeable battery located in said handle and being electrically connected to said illuminating device, and a switch located in said handle and being electrically connected to said battery and to said illuminating device.

16. The pivoting laryngoscope defined in claim 13, wherein said illuminating device comprises a luminous diode or an LED.

17. The pivoting laryngoscope defined in claim 1, further comprising a housing attached to said handle for accommodating a connection plug;

wherein one of said sections forms an end of said curved spatula blade, said one section having a performing element formed thereon, said performing element having a free, terminal end with an opening therein, and wherein said curved spatula blade includes a channel extending along a length of said blade from said housing to the opening for accommodating a semiconductor laser sheaf attached to the connection plug.

18. The pivoting laryngoscope defined in claim 1, wherein each of said sections has an essentially L-shaped cross section as viewed along a length of said spatula blade, with a base of the L-shape being greater than a height of the L-shape, said L-shaped sections collectively forming a guide path along which a cannula is guidable.

19. The pivoting laryngoscope defined in claim 18, wherein one of said sections forms an end of said curved spatula blade;

further comprising an illuminating device located on a terminal end of said one section, said illuminating device being illuminated during the guiding of the cannula.