Laryngoscope blade

• US 20080234549A1
• Filed: 03/22/2007
• Published: 09/25/2008
• Est. Priority Date: 03/22/2007
• Status: Active Grant

• Current Assignee: Vital Signs Incorporated (Becton, Dickinson & Co)
• Original Assignee: Vital Signs Incorporated (Becton, Dickinson & Co)
• Inventors: Geist, Leroy D., Jutte, Leroy D.
• Granted Patent: US 7,611,459 B2
• Time in Patent Office: Days
• US Class Current: 600/194
• CPC Class Codes: A61B 1/00101 the distal tip features being detachable
• CPC Class Codes: A61B 1/00105 characterised by modular construction
• 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 laryngoscope blade comprising a blade portion, a base portion and an optic light pipe, the blade portion including a proximal end and a distal end provided with an optic window, the base portion including two base halves mounted to each other and to the proximal end of the blade portion, one of the base halves providing a resilient cantilever latch pin and the other of the base halves providing a rigid hook, the light pipe including a proximal end mounted between the two base halves and a distal end extending through the optic window.

Claims

1. A laryngoscope blade comprising a blade portion, a base portion and an optic light pipe, said blade portion including a proximal end and a distal end provided with an optic window, said base portion including two base halves mounted to each other and to said proximal end of said blade portion, one of said base halves providing a resilient cantilever latch pin and the other of said base halves providing a rigid hook, and said light pipe including a proximal end mounted between said two base halves and a distal end extending through said optic window.

2. The laryngoscope blade according to claim 1 wherein said other base half is provided with a cantilever ball detent.

3. The laryngoscope blade according to claim 1 wherein said one base half is made of a material that is more rigid than the material of which said other base half is made.

4. The laryngoscope blade according to claim 1 wherein said base halves are made of ultrasonically weldable material and wherein said base halves are ultrasonically welded together.

5. The laryngoscope blade according to claim 4 wherein said one base half is made of un-reinforced nylon and wherein said other base half is made of glass-filled nylon.

6. The laryngoscope blade according to claim 4 wherein said one base half includes an inner surface provided with a plurality of outwardly extending weld pins, wherein said proximal end of said blade portion is provided with a plurality of thru holes, wherein said other base half includes an inner surface provided with a plurality of inwardly extending alignment sockets and wherein said plurality of outward extending alignment pins extend through said plurality of thru holes and into said plurality of alignment sockets to align said base halves and said proximal end of said blade portion with respect to each other.

7. The laryngoscope blade according to claim 4 wherein said inner surface of said one base half is provided with a plurality of outwardly extending weld ribs, wherein said inner surface of said other base half is provided with a plurality of inwardly extending weld cavities and wherein said outwardly extending weld ribs are inserted into said inwardly extending weld cavities to enhance the ultrasonic welding of said base halves.

8. The laryngoscope blade according to claim 6 wherein said proximal end of said blade portion is provided with a plurality of outwardly extending tangs, wherein said inner surface of said other base half is provided with a plurality of inwardly extending alignment sockets for receiving said plurality of outwardly extending tangs to further align said proximal end of said blade portion with said other base half.

9. The laryngoscope blade according to claim 8 wherein said proximal end of said light pipe is a contoured proximal end including a straight proximal end portion and a curved distally adjacent portion, wherein said inner surface of said one half is provided with an outwardly extending member providing a semicircular inwardly extending straight optical channel for receiving pone side of said straight proximal end of said optic light pipe and wherein said outer surface of said other base half is provided with an inwardly extending contoured optical channel for receiving the other side of said straight proximal end portion and one side of said curved distally adjacent portion of said contoured portion of the proximal end of said optic light pipe.

10. The laryngoscope blade according to claim 9 wherein said outer surface of said other base half is provided with an outwardly extending curved optic cover for covering a portion of said proximal end of said optic light pipe.

11. The laryngoscope blade according to claim 1 wherein said distal end of said blade portion includes a spoon-shaped tip.

12. A laryngoscope blade for lifting the tongue and epiglottis of a person and for being mounted removably to the upper end of a laryngoscope handle including a hinge pin and an inwardly extending locking slot, said laryngoscope blade comprising:

a blade portion including a proximal end and a distal end provided with an optic window;

a base portion including a first base half and a second base half mounted to each other in to said proximal end of said blade portion, said first half being of a material sufficiently resilient to provide a resilient cantilever latch pin for wedgedly and removably engaging the hinge pin and for permitting pivoting between said laryngoscope blade and the laryngoscope handle, said second base half being of a sufficiently rigid material to provide a rigid hook for loosely engaging said hinge pin and for withstanding load exerted on said laryngoscope blade during the lifting of the person'"'"'s tongue and epiglottis, and said second base half provided with a cantilever ball detent for wedgedly engaging the locking slot to lock said laryngoscope blade to the upper end of the laryngoscope handle; and

an optic light pipe including a proximal end mounted between said first and said second half of said base portion and further including a distal end extending through said optic window.

13. A laryngoscope blade for being mounted removably to the upper end of a laryngoscope handle including a hinge pin and an inwardly extending locking slot, said laryngoscope blade for being mounted to and pivoting around the hinge pin and into engagement with a depressible member provided at the upper end of the laryngoscope handle to close an energization circuit for a light source which emits light, said laryngoscope blade having force applied thereto upon pivoting of the laryngoscope handle to lift the tongue and epiglottis of a person to expose the person'"'"'s trachea for insertion of an endotracheal tube, said laryngoscope blade comprising:

a blade portion including a proximal end and a distal end provided with an optic window,

a base portion including a first base half and a second base half mounted to each other and to said proximal end of said blade portion, said first blade half being of a resilient material to provide a resilient cantilever latch pin for wedgedly engaging the hinge pin to mount said laryngoscope blade removably and pivotably to the hinge pin, said second base half being of a sufficiently rigid material to provide a rigid hook providing an inclined slot for receiving and loosely engaging the hinge pin, said rigid hook for withstanding the force applied to said laryngoscope blade upon lifting a person'"'"'s tongue and epiglottis, said second base half providing a cantilever ball detent for wedgedly engaging the locking slot to latch said laryngoscope blade in the on position at the upper end of the laryngoscope handle; and

an optic light pipe including a proximal end mounted between said first base half and said second base half and a distal end extending through said optic window.