# US 8,770,189 B2 · Endoscopic bite block

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- Number: US 8,770,189 B2
- Document ID: US8770189B2
- Status: Granted
- Kind: B2
- Application number: 13/968,737
- Filed: 2013-08-16
- Published: 2013-12-19
- Granted: 2014-07-08
- Earliest claimed: 2013-08-16
- Assignees: Oridion Medical 1987 Ltd.
- Applicants: Oridion Medical (1987) Ltd.
- Inventors: Joshua Lewis Colman; Gershon Levitsky; Ron Porat
- Web page: https://patentgrep.com/patent/US8770189B2

## CPC

- A61M 16/0493: {with means for protecting the tube from damage caused by the patient's teeth, e.g. bite block}
- A61B 1/00147: {Holding or positioning arrangements}
- A61B 1/00154: {using guiding arrangements for insertion}
- A61B 1/24: for the mouth, i.e. stomatoscopes, e.g. with tongue depressors; Instruments for opening or keeping open the mouth
- A61B 1/2676: {Bronchoscopes}
- A61B 1/2736: {Gastroscopes}
- A61B 5/082: {Evaluation by breath analysis, e.g. determination of the chemical composition of exhaled breath (A61B5/083, A61B5/091 take precedence)}
- A61B 5/097: Devices for facilitating collection of breath or for directing breath into or through measuring devices
- A61M 16/0488: {Mouthpieces; Means for guiding, securing or introducing the tubes (guiding or introducing with laryngoscopes A61B1/267; holding devices on the body A61M25/02)}
- A61M 16/0497: {Tube stabilizer}
- A61M 16/0666: {Nasal cannulas or tubing (devices for improving normal breathing through the nose A61F5/08; nose filters A62B23/06; outside holding devices A61M25/02)}
- A61M 16/0672: {Nasal cannula assemblies for oxygen therapy}
- A61M 16/0683: {Holding devices therefor}
- A61M 16/085: {Gas sampling}
- A61M 16/0875: {Connecting tubes}
- A61M 16/20: Valves specially adapted to medical respiratory devices
- A61M 39/22: Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)}
- A61M 16/0833: {T- or Y-type connectors, e.g. Y-piece}
- A61M 2016/0413: {with detectors of CO2 in exhaled gases}
- A61M 2202/0208: Oxygen
- A61M 2230/432: partial CO2 pressure (P-CO2)
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

According to a preferred embodiment of the present invention there is provided a bite block assembly adapted for capnography and oxygen delivery to a subject, the bite block assembly (50) including a first capnography passageway adapted for passage therethrough of exhaled breath from the subject to a capnograph and a second oxygen delivery passageway, separate from the first passageway, adapted for passage therethrough of oxygen from an oxygen source to the mouth of the subject.

## Claims

### Claim 1

A detachably connectable bite block assembly comprising:
(a) an oral-nasal cannula configured to collect exhaled breath for capnographic monitoring and to deliver oxygen, said oral-nasal cannula comprising:
an oxygen delivery bore in fluid connection with at least one delivery opening and an oxygen supply tube, and
an exhaled breath collection bore in fluid connection with an oral prong, at least one nasal prong and a breath collection tube; and
(b) a bite block comprising:
a hollow tubular portion configured for insertion into a subject's mouth, said hollow tubular portion configured to engage, on an outer portion thereof, said oxygen supply tube and thereby to detachably connect said bite block with said oral-nasal cannula, such that when said oxygen supply tube is engaged on said hollow tubular portion a valve is configured to open, and when said oxygen supply tube is disassembled from said hollow tubular portion the valve is configured to close; and
a main body portion from which said hollow tubular portion extends, said main body portion comprising a longitudinal groove configured to detachably accommodate said oral prong of said oral-nasal cannula, such that oral breath exhaled through said hollow tubular portion is directed towards said groove for collection by said oral prong.

### Claim 2 (depends on 1)

The bite block assembly according to claim 1, wherein said valve comprises a normally closed valve.

### Claim 3 (depends on 2)

The bite block assembly according to claim 2, wherein said normally closed valve comprises a luer valve.

### Claim 4 (depends on 3)

The bite block assembly according to claim 3, wherein a mating luer portion of said luer valve is mounted onto a branch of said oxygen supply tube.

### Claim 5 (depends on 1)

The bite block assembly according to claim 1, wherein when said valve is open a majority of the oxygen is directed to an oral cavity of the subject.

### Claim 6 (depends on 1)

The bite block assembly according to claim 1, wherein when said valve is closed oxygen flow is directed to said oral nasal cannula.

### Claim 7 (depends on 1)

The bite block assembly according to claim 1, wherein said oral-nasal cannula further comprises an oral breath directing element.

### Claim 8 (depends on 7)

The bite block assembly according to claim 7, wherein said oral breath directing element is slidably mounted onto said oral prong.

### Claim 9 (depends on 8)

The bite block assembly according to claim 8, wherein said oral breath directing element is configured to retract and extend in order to bring said bite block closer and farther, respectively, from said oral-nasal cannula, thereby accommodating the facial dimensions of the subject.

### Claim 10 (depends on 1)

The bite block assembly according to claim 1, wherein said bite block further comprises a flexible barrier closing off the hollow tubular portion while leaving an opening near said oral prong, such that a majority of the exhaled oral breath is directed towards said oral prong.

### Claim 11 (depends on 10)

The bite block assembly according to claim 10, wherein said flexible barrier comprises multiple flaps.

### Claim 12 (depends on 11)

The bite block assembly according to claim 11, wherein said flaps are transparent, to enable observation of the oral cavity of the subject during the endoscopic procedure.

### Claim 13 (depends on 1)

The bite block assembly according to claim 1, wherein an outer surface of said hollow tubular portion comprises top and bottom teeth engagement surfaces, to facilitate accurate biting of said bite block by the subject.