Patent US3865099A successfully refreshed from Google Patents.
US3865099A
Expired / Lapsed
US
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Medical electrode and method of making
Assignee: Texas Instruments Inc
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Filing: 1973-05-18
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Granted: 1975-02-11
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Expires: 1993-05-18
Abstract
Abstract A medical electrode unit has a dielectric body with an openended body cavity and has a body step dividing the cavity into a small portion holding an electrode and a larger portion at the open cavity end. A porous organic pad is fused to the body step over the electrode and electrolyte paste fills the body cavity, the paste being forced through the porous pad and forming a paste mound at the cavity end. Adhesive on the body, which can be used to mount the electrode unit on a patient, holds a cover over the cavity in contact with the paste mound so that, when the cover is removed, a moist electrolyte surface free of hard crystals is exposed to be contacted with the patient.
Inventors
- 👤 Robert H Robichaud
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:04
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/0404; A61N1/0472; A61N1/0492; A61N1/0496
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
222 words
A medical electrode unit comprising a dielectric body having a cavity therein which is open at one end, said body having a step surface within said cavity forming a relatively small cavity portion spaced from said open cavity end and a relatively larger cavity portion adjacent said open cavity end, means secured to said body around said open cavity end for securing the electrode unit to a patient, a conductive electrode element disposed within said relatively smaller cavity portion spaced from said step surface, said electrode element having means extending away from said cavity out of said dielectric body for permitting electrical connection to be made to the electrode element, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent said open cavity end, electrolyte paste filling said relatively smaller cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably secured against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 2
Dependent Claim
222 words
A medical electrode unit comprising a dielectric body having a cavity therein which is open at one end, said body having a step surface within said cavity forming a relatively small cavity portion spaced from said open cavity end and a relatively larger cavity portion adjacent said open cavity end, means secured to said body around said open cavity end for securing the electrode unit to a patient, a conductive electrode element disposed within said relatively smaller cavity portion spaced from said step surface, said electrode element having means extending away from said cavity out of said dielectric body for permitting electrical connection to be made to the electrode element, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent said open cavity end, electrolyte paste filling said relatively smaller cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably secured against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 3
Dependent Claim
231 words
A medical electrode unit comprising a dielectric body having a cavity therein which is open at one end, said body having a step surface within said cavity forming a relatively small cavity portion spaced from said open cavity end and a relatively larger cavity portion adjacent said open cavity end, said body having a rim portion around said open cavity end, adhesive means on said body for securing said body rim against a patient''s skin, a conductive electrode element disposed within said relatively smaller cavity portion spaced from said step surface, said electrode element having means extending away from said cavity out of said body for permitting electrical connection to be made to the electrode element, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent said open cavity end, electrolyte paste filling said relatively cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably held by said adhesive means against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 4
Dependent Claim
231 words
A medical electrode unit comprising a dielectric body having a cavity therein which is open at one end, said body having a step surface within said cavity forming a relatively small cavity portion spaced from said open cavity end and a relatively larger cavity portion adjacent said open cavity end, said body having a rim portion around said open cavity end, adhesive means on said body for securing said body rim against a patient''s skin, a conductive electrode element disposed within said relatively smaller cavity portion spaced from said step surface, said electrode element having means extending away from said cavity out of said body for permitting electrical connection to be made to the electrode element, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent said open cavity end, electrolyte paste filling said relatively cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably held by said adhesive means against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 5
Dependent Claim
237 words
A medical electrode unit comprising a dielectric body having a bore extending therethrough, a conductive electrode element disposed within said bore and cooperating with said dielectric body to form a cavity which is open at one end, said electrode element having a portion extending away from said cavity out of said body for permitting electrical connection to be made to the electrode element, said dielectric body having a step surface within saiD cavity dividing said cavity into a relatively small cavity portion adjacent said conductive electrode element and a relatively larger cavity portion adjacent said open cavity end, said body having a rim portion around said open cavity end, adhesive means on said body for securing said body against a patient''s skin, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent open cavity end, electrolyte paste filling said relatively smaller cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably held by said adhesive means against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 6
Dependent Claim
237 words
A medical electrode unit comprising a dielectric body having a bore extending therethrough, a conductive electrode element disposed within said bore and cooperating with said dielectric body to form a cavity which is open at one end, said electrode element having a portion extending away from said cavity out of said body for permitting electrical connection to be made to the electrode element, said dielectric body having a step surface within saiD cavity dividing said cavity into a relatively small cavity portion adjacent said conductive electrode element and a relatively larger cavity portion adjacent said open cavity end, said body having a rim portion around said open cavity end, adhesive means on said body for securing said body against a patient''s skin, a resilient, dielectric foam pad having pores extending therethrough secured to said step surface of said body within said relatively larger cavity portion in spaced relation to said conductive electrode element and having a surface of said pad extending adjacent open cavity end, electrolyte paste filling said relatively smaller cavity portion in wetting relation to said conductive electrode element, filling said pores of said foam pad, and forming a mound of said electrolyte paste on said pad outside said cavity, and a cover releasably held by said adhesive means against said dielectric body over said open cavity end, said cover having a surface engaging said electrolyte paste over substantially all of said open cavity end.
Claim 7
Dependent Claim
31 words
A medical electrode unit as set forth in claim 3 wherein said conductive electrode element embodies a male snap-fastener portion disposed in said bore in said dielectric body opposite said cavity.
Claim 8
Dependent Claim
20 words
A medical electrode unit as set forth in claim 3 wherein said form pad is formed of reticulated polyurethane foam.
Claim 9
Dependent Claim
36 words
A medical electrode unit as set forth in claim 3 wherein said adhesive means comprises an adhesive-coated, elastic, foam ring secured around the periphery of said dielectric body in surrounding relation to said open cavity end.
Claim 10
Independent Claim
155 words
A method for making a medical electrode unit improving the steps of providing a dielectric body having an open-ended cavity therein, having a conductive electrode element disposed in said cavity spaced from said open cavity end and having a stepped surface dividing said cavity in a relatively smaller cavity portion adjacent said conductive element and a relatively larger cavity portion adjacent said open cavity end, securing a resilient dielectric foam pad having pores extending therethrough to said stepped surface in spaced relation to said conductive element with a surface of said pad disposed adjacent said open cavity end, forcing an electrolyte paste through said pad to fill said cavity and to form a mound of said paste on said pad outside said cavity, and securing a cover against said body for flattening said mound of electrolyte paste to engage a surface of said cover with said paste over substantially all of said open cavity end.
Claim 11
Independent Claim
155 words
A method for making a medical electrode unit improving the steps of providing a dielectric body having an open-ended cavity therein, having a conductive electrode element disposed in said cavity spaced from said open cavity end and having a stepped surface dividing said cavity in a relatively smaller cavity portion adjacent said conductive element and a relatively larger cavity portion adjacent said open cavity end, securing a resilient dielectric foam pad having pores extending therethrough to said stepped surface in spaced relation to said conductive element with a surface of said pad disposed adjacent said open cavity end, forcing an electrolyte paste through said pad to fill said cavity and to form a mound of said paste on said pad outside said cavity, and securing a cover against said body for flattening said mound of electrolyte paste to engage a surface of said cover with said paste over substantially all of said open cavity end.
Claim 12
Dependent Claim
28 words
A method as set forth in claim 7 wherein said foam pad material is secured to said stepped body surface by heat-fusing said pad to said body surface.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |