Patent US5512730A successfully refreshed from Google Patents.
US5512730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self sterilizing hypodermic syringe and method
Assignee: Spintech Inc
•
Filing: 1993-11-30
•
Granted: 1996-04-30
•
Expires: 2013-11-30
Abstract
Abstract A disposable thermoplastic hypodermic syringe having a hollow metallic needle and thermoplastic body portions at least part of which are formed of temperature calibrated thermoplastic having a full flow liquefaction temperature corresponding to point on the time-death curve for microbial life at which the most resistant spore forms are killed within the time the thermoplastic can be liquefied and resolidified. Heat resistant indicia can be applied to the syringe in a manner to reappear on the solidified thermoplastic mass.
Inventors
- 👤 Ronald P. Spinello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:27
CPC Classifications
A; A61; A61L; A61L11/00; A61M; A61M5/00; A61M5/178; A61M5/31; A61M5/3129; A61M5/32; A61M5/3205; A61M5/3278; B; B09; B09B; B09B3/00; B09B3/20; B09B3/21; B09B3/24; A61M2205/00; A61M2205/58; A61M2205/583; B09B2101/00; B09B2101/65
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
122 words
A thermal processor for melting and solidifying materials including thermoplastic in conjunction with medical waste, said processor comprising: a housing having an upper end and a lower end; a controllable heat source adjacent to the lower end of the housing; a heat resistant container removably mounted in the housing and adapted to receive the materials for processing, said container having sides, an upper end and a lower end; a controllable heat source disposed below the container to apply heat to the lower end thereof; and a baffle means disposed within the housing to engage the sides of the container adjacent its lower end to define a hot chamber between the baffle and the heat source and a cool chamber above the baffle.
Claim 2
Dependent Claim
122 words
A thermal processor for melting and solidifying materials including thermoplastic in conjunction with medical waste, said processor comprising: a housing having an upper end and a lower end; a controllable heat source adjacent to the lower end of the housing; a heat resistant container removably mounted in the housing and adapted to receive the materials for processing, said container having sides, an upper end and a lower end; a controllable heat source disposed below the container to apply heat to the lower end thereof; and a baffle means disposed within the housing to engage the sides of the container adjacent its lower end to define a hot chamber between the baffle and the heat source and a cool chamber above the baffle.
Claim 3
Dependent Claim
41 words
A thermal processor as set forth in claim 1, further comprising vent means formed in said housing above the baffle means, said vent means being in communication with said cool chamber to establish a flow of unheated air on the container.
Claim 4
Dependent Claim
48 words
A thermal processor as set forth in claim 1, wherein said container is formed with a relatively wide mouth at the upper end and wherein said sides are formed as downwardly convergent walls to define a relatively small volume to concentrate molten thermoplastic to encapsulate unmelted medical waste.
Claim 5
Dependent Claim
46 words
A thermal processor as set forth in claim 1 including a detachable cover portion, a filter in said cover portion, and a U-shaped locking member pivotally mounted on the housing at diametrically spaced points to be swung upward above the cover portion to engage the filter.
References Cited (Backward Citations)
US3476506A
Cited
US3892706A
Cited
US4275628A
Cited
US4409029A
Cited
US4315448A
Cited
US4434074A
Cited
US4404881A
Cited
US4552720A
Cited
US4531437A
Cited
US4628169A
Cited
US4756681A
Cited
US4662516A
Cited
US4834917A
Cited
US4860958A
Cited
JPH02126632A
Cited
US4877934A
Cited
US4992217A
Cited
US5078924A
Cited
US5207994A
Cited
US5256861A
Cited
US5185126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-04-30 | 1999-10-30 | 2000-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-04-30 | 2003-10-30 | 2004-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-04-30 | 2007-10-30 | 2008-04-30 | $7700.00 | Window Closed / Lapsed |