US3579810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making capillary assemblies for oxygenators and the like
Assignee: United States Department of the Army
•
Filing: 1969-06-13
•
Granted: 1971-05-25
•
Expires: 1989-06-13
Abstract
Abstract An inexpensive and rapid method of assembling capillary units and the like is disclosed. Commercially available capillary tubing is first wound around two end pins spaced apart a predetermined distance slightly greater than the length of the capillary strands in the completed unit. Each end pin is then dipped into an epoxy potting compound and caused to harden. The hardened ends are thereafter cut in appropriate places so as to expose the capillary tubes. A suitable outer housing, having appropriate conduits for the transfer of blood and oxygen to the unit, may then be provided to the assembled capillaries.
Inventors
- 👤 George Mon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:36
CPC Classifications
B; B01; B01D; B01D63/00; B01D63/02; B01D63/021; B01D63/0231; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
26 words
The method of claim 1 wherein the pins are spaced-apart a distance slightly greater than the desired length of capillary tubing in the completed capillary unit.
Claim 2
Dependent Claim
29 words
The method of claim 2 wherein the pins are located on a winding unit haVing means to rotate the pins and means to adjust the distance between the pins.
Claim 3
Dependent Claim
14 words
The method of claim 3 wherein the pins are detachable from the winding unit.
Claim 4
Dependent Claim
18 words
The method of claim 1 wherein the potting compound comprises a resinous epoxy material capable of being hardened.
Claim 5
Dependent Claim
22 words
The method of claim 1 wherein the step of hardening the potting compound includes the step of applying heat to the compound.
Claim 6
Dependent Claim
28 words
The method of claim 1 further comprising the steps of placing each pin into a mold having a cavity therein and pouring the potting compound into the cavity.
Claim 7
Dependent Claim
48 words
The method of claim 7 further comprising the steps of inserting a predetermined number of rods into the potting compound prior to hardening so as to provide preformed holes in said rigid portion to be used for securing each end of the capillary unit to an external housing.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |