US4784646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Subcutaneous delivery device
Assignee: Individual
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Filing: 1986-12-03
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Granted: 1988-11-15
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Expires: 2006-12-03
Abstract
Abstract A subcutaneous delivery device assembly and method is provided. The assembly includes a subcutaneous delivery device comprising a catheter, a self-sealing input port at a first end of the catheter, an internal magnet adjacent to the self-sealing port and a valve at a second end of the catheter. The assembly further includes a corresponding external locator which is adapted to be magnetically located adjacent to the internal magnet and separator therefrom by a thin layer of human tissue. The assembly can be used to locate and stabilize a syringe needle during injection.
Inventors
- 👤 Vladimir Feingold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:02
CPC Classifications
A; A61; A61M; A61M39/00; A61M39/02; A61M39/0208; A61M2039/0226; A61M2205/00; A61M2205/35; A61M2205/3507; A61M2205/3515; A61M5/00; A61M5/42; A61M5/427
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
63 words
A subcutaneous delivery device comprising a catheter, a self-sealing input port at a first end of said catheter, a magnetic device adjacent the self-sealing input port, the magnetic device comprising a first magnet located subcutaneously and a second magnet adapted to be magnetically held at an exterior location adjacent the first magnet, and valve means at a second opposite end of said catheter.
Claim 2
Dependent Claim
63 words
A subcutaneous delivery device comprising a catheter, a self-sealing input port at a first end of said catheter, a magnetic device adjacent the self-sealing input port, the magnetic device comprising a first magnet located subcutaneously and a second magnet adapted to be magnetically held at an exterior location adjacent the first magnet, and valve means at a second opposite end of said catheter.
Claim 3
Dependent Claim
31 words
The delivery device of claim 1 wherein said catheter is a double layer tube comprising an inner conduit compatible with the medication and an outer conduit made from blood compatible material.
Claim 4
Dependent Claim
56 words
The delivery device of claim 1 wherein said valve means is comprised by the second opposite end of the inner conduit having at least one outlet therein, and an extended outer conduit projecting beyond the inner conduit to sealingly shroud said inner conduit whilst the pressure within said inner conduit is less than internal body pressure.
Claim 5
Dependent Claim
38 words
The delivery device of claim 1 where said input port comprises a gel sealant surrounded by an elastomer through which a syringe needle may pass and a syringe barrier member through which fluid may pass to the catheter.
Claim 6
Dependent Claim
19 words
The delivery device of claim 4 wherein a bacterial filter is located between the syringe barrier and the catheter.
Claim 7
Dependent Claim
23 words
The delivery device of any preceding claim wherein said magnetic means comprises an annular magnet located around the opening of said input port.
Claim 8
Dependent Claim
18 words
The delivery device of claim 6 wherein said annular magnet is covered with a thin sheet of elastomer.
Claim 9
Dependent Claim
69 words
A subcutaneous delivery assembly comprising a catheter including a self sealing input port at a first end of said catheter, catheter magnetic means adjacent the self sealing input port, valve means at a second opposite end of said catheter; said assembly further including corresponding external needle locator means adapted to be magnetically located adjacent to said catheter magnetic means and separated therefrom by a thin layer of human tissue.
Claim 10
Dependent Claim
69 words
A subcutaneous delivery assembly comprising a catheter including a self sealing input port at a first end of said catheter, catheter magnetic means adjacent the self sealing input port, valve means at a second opposite end of said catheter; said assembly further including corresponding external needle locator means adapted to be magnetically located adjacent to said catheter magnetic means and separated therefrom by a thin layer of human tissue.
Claim 11
Dependent Claim
34 words
The delivery device of claim 8 wherein said needle locator means comprises a stiff disc surrounded by an external annular magnet, said disc having a centrally located hole adapted to guide a syringe needle.
Claim 12
Dependent Claim
41 words
The delivery device of claim 9 wherein said catheter magnetic means comprises an internal annular magnet of diameter corresponding to the diameter of said internal annular magnet, said internal annular magnet and said catheter annular magnet being of opposite magnetic polarity.
Claim 13
Independent Claim
124 words
A method of supporting and guiding a syringe needle during insertion of the needle through a layer of skin into a subcutaneous delivery device, said method comprising inserting said subcutaneous delivery device below the skin, said device comprising a catheter, a self-sealing input port at a first end of said catheter, an internal magnetic device adjacent the self-sealing input port, and valve means at a second opposite end of said catheter; placing a guide assembly over the skin adjacent said delivery device, said guide assembly including an external magnetic device to maintain said guide assembly in approximately fixed relation with said internal magnetic device; inserting said syringe needle through said guide assembly, through the skin and into said input port of said delivery device.
Claim 14
Independent Claim
124 words
A method of supporting and guiding a syringe needle during insertion of the needle through a layer of skin into a subcutaneous delivery device, said method comprising inserting said subcutaneous delivery device below the skin, said device comprising a catheter, a self-sealing input port at a first end of said catheter, an internal magnetic device adjacent the self-sealing input port, and valve means at a second opposite end of said catheter; placing a guide assembly over the skin adjacent said delivery device, said guide assembly including an external magnetic device to maintain said guide assembly in approximately fixed relation with said internal magnetic device; inserting said syringe needle through said guide assembly, through the skin and into said input port of said delivery device.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-15 | 1992-05-16 | 1992-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-15 | 1996-05-16 | 1996-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-15 | 2000-05-16 | 2000-11-15 | $7700.00 | Window Closed / Lapsed |