US4502478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Medical instrument mouth guard
Assignee: Avcarb Material Solutions Inc
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Filing: 1983-04-04
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Granted: 1985-03-05
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Expires: 2003-04-04
Abstract
Abstract A guard for use in a patient's mouth provides means for maintaining a patient's teeth spaced at a fixed minimum distance from each other. A passageway is provided for a medical instrument, such as an endoscope to be passed into the patient's oral cavity without contacting the patient's teeth. In a preferred aspect, an opening is also provided for an operator's fingers to safely facilitate manipulation of the medical instrument. The guard is held in place by a band around the patient's head.
Inventors
- 👤 Lester J. Lifton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:57
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/04; A61M16/0488; A61M16/0497; A61M16/049; A61M16/0493; Y; Y10; Y10S; Y10S128/00; Y10S128/26; Y10S128/912
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
186 words
A protective mouth guard comprising: a main body shield having an inner face adapted for resting generally flush against a patient's face around the mouth; a projection extending from said inner face so as to extend into a patient's mouth a partial distance beyond the front teeth when in use, and having a shape for maintaining the patient's teeth in spaced apart relationship and further comprising a passageway extending therethrough and through said main body shield for providing passage to a medical instrument from the exterior into the patient's oral cavity while preventing contact between the patient's teeth and the medical instrument when in use; and said main body shield having, on one side of the projection, an open portion defined by two prongs and large enough to permit entry of an operator's fingers into the patient's oral cavity, when the guard is positioned therein, for facilitating manipulation of an instrument passed through said projection passageway and into the patient's oral cavity, and main body shield further having a cutout portion on the side of the projection opposite the open portion defined by said two prongs.
Claim 2
Dependent Claim
186 words
A protective mouth guard comprising: a main body shield having an inner face adapted for resting generally flush against a patient's face around the mouth; a projection extending from said inner face so as to extend into a patient's mouth a partial distance beyond the front teeth when in use, and having a shape for maintaining the patient's teeth in spaced apart relationship and further comprising a passageway extending therethrough and through said main body shield for providing passage to a medical instrument from the exterior into the patient's oral cavity while preventing contact between the patient's teeth and the medical instrument when in use; and said main body shield having, on one side of the projection, an open portion defined by two prongs and large enough to permit entry of an operator's fingers into the patient's oral cavity, when the guard is positioned therein, for facilitating manipulation of an instrument passed through said projection passageway and into the patient's oral cavity, and main body shield further having a cutout portion on the side of the projection opposite the open portion defined by said two prongs.
Claim 3
Dependent Claim
46 words
A guard as in claim 1, further comprising, in combination, a strap adapted for engaging the main body at said cutout portion, for being passed around a patient's head, and for engaging the prong projections for securing the guard in a patient's mouth when in use.
Claim 4
Dependent Claim
14 words
A guard as in claim 1, wherein said guard is a one-piece integral unit.
Claim 5
Dependent Claim
14 words
A guard as in claim 2, wherein said guard is a one-piece integral unit.
Claim 6
Dependent Claim
30 words
A guard as in claim 3, wherein said guard is made of a generally resilient, rigid, non-brittle plastic material, with said guard having been manufactured by an injection molding technique.
Claim 7
Dependent Claim
30 words
A guard as in claim 4, wherein said guard is made of a generally resilient, rigid, non-brittle plastic material, with said guard having been manufactured by an injection molding technique.
Claim 8
Dependent Claim
14 words
A guard as in claim 2, wherein said strap is made of latex rubber.
Claim 9
Dependent Claim
18 words
A guard as in claim 1, wherein said passageway is of a size sufficient to accommodate an endoscope.
Claim 10
Dependent Claim
46 words
A guard as in claim 1, wherein said projection comprises ridges at the top and bottom thereof at the end spaced from the main body shield for abutting against the rear of a patient's teeth and preventing the guard from sliding out of the patient's mouth.
Claim 11
Dependent Claim
206 words
A protective mouth guard comprising: a main body shield having an inner face adapted for resting generally flush against a patient's face around the mouth; a projection extending from said inner face so as to extend into a patient's mouth a partial distance beyond the front teeth when in use, and having a shape for maintaining the patient's teeth in spaced apart relationship and further comprising a passageway extending therethrough and through said main body shield for providing passage to a medical instrument from the exterior into the patient's oral cavity while preventing contact between the patient's teeth and the medical instrument when in use; and said main body shield having, on one side of the projection, an open portion defined by two prongs and large enough to permit entry of an operator's fingers into the patient's oral cavity, when the guard is positioned therein, for facilitating manipulation of an instrument passed through said projection passageway and into the patient's oral cavity, and main body shield further having strap engaging means on the side of the projection opposite the open portion to permit the engaging thereon of the end of a strap to be fastened around the patient's head for holding said mouth guard in place.
Claim 12
Dependent Claim
206 words
A protective mouth guard comprising: a main body shield having an inner face adapted for resting generally flush against a patient's face around the mouth; a projection extending from said inner face so as to extend into a patient's mouth a partial distance beyond the front teeth when in use, and having a shape for maintaining the patient's teeth in spaced apart relationship and further comprising a passageway extending therethrough and through said main body shield for providing passage to a medical instrument from the exterior into the patient's oral cavity while preventing contact between the patient's teeth and the medical instrument when in use; and said main body shield having, on one side of the projection, an open portion defined by two prongs and large enough to permit entry of an operator's fingers into the patient's oral cavity, when the guard is positioned therein, for facilitating manipulation of an instrument passed through said projection passageway and into the patient's oral cavity, and main body shield further having strap engaging means on the side of the projection opposite the open portion to permit the engaging thereon of the end of a strap to be fastened around the patient's head for holding said mouth guard in place.
Claim 13
Dependent Claim
47 words
A guard as in claim 10 further comprising, in combination, a strap adapted for engaging the main body at said strap engaging means, for being passed around a patient's head, and for engaging the prong projections for securing the guard in the patient's mouth when in use.
Claim 14
Dependent Claim
18 words
A guard as in claim 10, wherein said passageway is of a size sufficient to accommodate an endoscope.
Claim 15
Dependent Claim
46 words
A guard as in claim 10, wherein said projection comprises ridges at the top and bottom thereof at the end spaced from the main body shield for abutting against the rear of a patient's teeth and preventing the guard from sliding out of the patient's mouth.
Claim 16
Dependent Claim
14 words
A guard as in claim 10 wherein said guard is a one-piece integral unit.
Claim 17
Dependent Claim
14 words
A guard as in claim 11, wherein said guard is a one-piece integral unit.
Claim 18
Dependent Claim
30 words
A guard as in claim 15, wherein said guard is made of a generally resilient, rigid, non-brittle plastic material, with said guard having been manufactured by an injection molding technique.
Claim 19
Dependent Claim
30 words
A guard as in claim 16, wherein said guard is made of a generally resilient, rigid, non-brittle plastic material, with said guard having been manufactured by an injection molding technique.
Claim 20
Dependent Claim
14 words
A guard as in claim 11, wherein said strap is made of latex rubber.
References Cited (Backward Citations)
US2669988A
Cited
US4351331A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-04 | 1988-09-03 | 1989-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-04 | 1992-09-03 | 1993-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-04 | 1996-09-03 | 1997-03-05 | $7700.00 | Window Closed / Lapsed |