US5466898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stethoscope isolation system
Assignee: Individual
•
Filing: 1992-03-20
•
Granted: 1995-11-14
•
Expires: 2012-03-20
Abstract
Abstract A system for preventing nosocomial infection and contamination through usage of a stethoscope, utilizing a stethoscope sleeve and fitting accessory configured to be utilized in conjunction with off-the-shelf stethoscopes and the like. A first embodiment (FIGS. 1 & 2b) includes a one-use, disposable sleeve, wherein the head or diaphragm-retaining ring is covered in its entirety, with the full covering up of the body to the ear tubes, the cover being composed of a bacterial, viral, and fluid impermeable, acoustically transparent medium. The accessory includes a spreader attachment removably affixed to the upper body of the stethoscope and containable within the sleeve when mounted on the stethoscope. In combination with the spreader attachment accessory, the system provides a sterile system for preventing infection which isolates the stethoscope from both the user as well as the patient, greatly reducing any risk of contamination. A second embodiment (FIGS. 3 & 2a), designed for reducing the spread of infection among health care workers sharing a patient dedicated instrument during reverse isolation technique, utilizes substantially the same sleeve but which further includes a handle apparatus affixed to the wishbone portion of the instrument, allowing the ear caps of the instrument to be spread for engaging and disengaging the instrument from the various health care workers, without the necessity of touching the body of the instrument during use, thereby preventing cross infection during the consequential sharing of the dedicated stethoscope by the various health care providers.
Inventors
- 👤 Edwin E. Gilbert
- 👤 Timothy J. Foret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:51
CPC Classifications
A; A61; A61B; A61B7/00; A61B7/02; A61B46/00; A61B46/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
333 words
In association with the use of a medical stethoscope having a first, head end to be positioned during use in juxtaposition to a patient, a medial sound tube portion, a tube separation portion, and a second rear end comprising first and second ear tubes to be positioned during use in juxtaposition to each one of the user's ears, respectively, a method of preventing the passing of contamination between the patient and the user during the use of the medical stethoscope, comprising the following steps: (a) providing a stethoscope isolation system to be used on the stethoscope during use of the stethoscope on the patient, including a sleeve having a first, closed end and a second, open end forming a mouth, and wall portions forming a cavity of sufficient size to allow the first, head end of the stethoscope to be placed therein, said sleeve having a sufficient length and scope to envelope the first, head end and the medial sound tube portion of the stethoscope, up to at least about the tube separation portion of the stethoscope, said sleeve being comprised of acoustically transparent, biologically impermeable material, and attachment means associated with said sleeve to at least temporarily attach the sleeve to the stethoscope while the stethoscope is in use on the patient; (b) placing the first, head end of the stethoscope in said second, open end of said sleeve; (c) moving the first, head end of the stethoscope into and through said cavity until the first, head end of the stethoscope is in juxtaposition to said first, closed end of said sleeve and at least the medial sound tube portion is substantially within said sleeve and is covered over by said sleeve up to at least about said tube separation portion; and (d) using said sleeve on the stethoscope to isolate, both directly and in reverse, the patient and the user from passing any contamination between them through mutual contact with the stethoscope while the stethoscope is in use on the patient.
Claim 2
Dependent Claim
333 words
In association with the use of a medical stethoscope having a first, head end to be positioned during use in juxtaposition to a patient, a medial sound tube portion, a tube separation portion, and a second rear end comprising first and second ear tubes to be positioned during use in juxtaposition to each one of the user's ears, respectively, a method of preventing the passing of contamination between the patient and the user during the use of the medical stethoscope, comprising the following steps: (a) providing a stethoscope isolation system to be used on the stethoscope during use of the stethoscope on the patient, including a sleeve having a first, closed end and a second, open end forming a mouth, and wall portions forming a cavity of sufficient size to allow the first, head end of the stethoscope to be placed therein, said sleeve having a sufficient length and scope to envelope the first, head end and the medial sound tube portion of the stethoscope, up to at least about the tube separation portion of the stethoscope, said sleeve being comprised of acoustically transparent, biologically impermeable material, and attachment means associated with said sleeve to at least temporarily attach the sleeve to the stethoscope while the stethoscope is in use on the patient; (b) placing the first, head end of the stethoscope in said second, open end of said sleeve; (c) moving the first, head end of the stethoscope into and through said cavity until the first, head end of the stethoscope is in juxtaposition to said first, closed end of said sleeve and at least the medial sound tube portion is substantially within said sleeve and is covered over by said sleeve up to at least about said tube separation portion; and (d) using said sleeve on the stethoscope to isolate, both directly and in reverse, the patient and the user from passing any contamination between them through mutual contact with the stethoscope while the stethoscope is in use on the patient.
Claim 3
Dependent Claim
151 words
The stethoscope contamination prevention method of claim 1, wherein in step "a" there is included the further step of: providing a tab affixed at its proximal end to one part of said wall portions and having a length to reach through the tube separation portion of the stethoscope, as well as an opposing wall portion across said mouth of said sleeve when the first, head end and the medial sound tube portion of the stethoscope is in said sleeve; and wherein there is included, between steps "c" and "d", the following further steps: (i) grasping said tab and extending it across said mouth of said sleeve, and about a portion of the tube separation portion of the stethoscope; and (ii) attaching the distal end of said tab to an opposing wall portion, affixing the sleeve to the stethoscope, said stethoscope enveloping the head end and medial tube portion of the stethoscope.
Claim 4
Dependent Claim
33 words
The stethoscope contamination prevention method of claim 2, wherein in step "ii" there-is included the step of: using an adhesive to attach the distal end of said tab to said opposing wall portion.
Claim 5
Dependent Claim
37 words
The stethoscope contamination prevention method of claim 2, wherein in step "ii" there is included the step of: using opposed, hook and loop material to attach the distal end of said tab to said opposing wall portion.
Claim 6
Dependent Claim
39 words
The stethoscope contamination prevention method of claim 2, wherein in step "i" there is included the step of: extending said tab over said tube separation portion in attaching the distal end of said tab to said opposing wall portion.
Claim 7
Dependent Claim
101 words
The stethoscope contamination prevention method of claim 1, wherein there is included the further step of: providing an expansion frame in association with said sleeve for expanding the mouth portion of said frame, said expansion frame being formed generally about the periphery of said mouth of said sleeve, said expansion frame further including first and second edge corners; and wherein in connection with step "b" there is included the further step of: applying transverse pressure to said first and second edge corners of said expansion frame, opening said mouth of said sleeve for placing portions of said stethoscope in said sleeve.
Claim 8
Dependent Claim
97 words
The stethoscope contamination prevention method of claim 1, wherein in step "a" there is included the further step of: providing spreader means for spreading the first and second ear tubes of the stethoscope, said spreader means situated in the cavity formed in said slip; and wherein there is provided the additional steps, after step "c", of i. attaching said spreader means to the first and second ear tubes of the stethoscope; ii. grasping said slip over said spreader means; iii. squeezing said slip over said spreader means, thereby separating the first second ear tubes of the stethoscope.
References Cited (Backward Citations)
US738960A
Cited
US2049729A
Cited
US3678751A
Cited
US3750471A
Cited
US3939971A
Cited
US4042170A
Cited
US4159766A
Cited
US4116338A
Cited
US4226162A
Cited
US4401125A
Cited
US4406346A
Cited
US4550831A
Cited
US4630729A
Cited
US4867268A
Cited
US4871046A
Cited
US4867265A
Cited
US5002561A
Cited
US4998538A
Cited
US5163418A
Cited
US5172683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-13 | 1999-05-15 | 1999-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-13 | 2003-05-15 | 2003-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-13 | 2007-05-15 | 2007-11-14 | $7700.00 | Window Closed / Lapsed |