US4405307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Needle assembly and method for fabricating same
Assignee: Individual
•
Filing: 1981-12-10
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Granted: 1983-09-20
•
Expires: 2001-12-10
Abstract
Abstract The method is used for fabricating a needle assembly (10) comprising an outer cannula (12), an inner stylet (32), an orienting hub (16) on the proximal end (18) of the cannula (12) and a mating locating cap (40) on the proximal end (38) of the stylet (32). The method comprises the steps of: fixing a plug (36) of plastic material on the proximal end (38) of the stylet (32); inserting the distal end (33) of the stylet (32) into the proximal end (18) of the cannula (12) having a hub (16) with locating means (28) at the proximal end (18) of the cannula (12); aligning the distal end (33) of the stylet (32) longitudinally and rotationally with the distal end (13) of the cannula (12); placing a locating cap (40) having a throughbore (42) over the plastic plug (36) on the proximal end (38) of the stylet (32) inserted into the cannula (12) and aligned at the outer end thereof with the stylet (32); positioning locating means (44) on the cap (40) in mating relationship with the locating means (26) on the hub (16); and, inserting solvent into the outer end (43 ) of the bore (42) in the cap (40) to solvent bond the cap (40) to the plug (36) on the stylet (32) with the cap (40) and hub (18) and stylet (32) and cannula (12) in proper alignment with each other.
Inventors
- 👤 Alan N. Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:19
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; A61M25/0014
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
186 words
A method for fabricating a needle assembly comprising an outer cannula, an inner stylet, an orienting hub on the proximal end of the cannula and a mating locating cap on the proximal end of the stylet, said method comprising the steps of: fixing a plug of plastic material on the proximal end of the stylet; inserting the distal end of the stylet into the proximal end of the cannula having a hub with locating means at the proximal end of the cannula; aligning the distal end of the stylet longitudinally and rotationally with the distal end of the cannula; placing a locating cap having a throughbore over the plastic plug on the proximal end of the stylet inserted into the cannula and aligned at the outer end thereof with the stylet; positioning locating means on the cap in mating relationship with the locating means on the hub; and inserting solvent into the outer end of the bore in the cap to solvent bond the cap to the plug on the stylet with the cap and hub, and stylet and cannula in proper alignment with each other.
Claim 2
Independent Claim
186 words
A method for fabricating a needle assembly comprising an outer cannula, an inner stylet, an orienting hub on the proximal end of the cannula and a mating locating cap on the proximal end of the stylet, said method comprising the steps of: fixing a plug of plastic material on the proximal end of the stylet; inserting the distal end of the stylet into the proximal end of the cannula having a hub with locating means at the proximal end of the cannula; aligning the distal end of the stylet longitudinally and rotationally with the distal end of the cannula; placing a locating cap having a throughbore over the plastic plug on the proximal end of the stylet inserted into the cannula and aligned at the outer end thereof with the stylet; positioning locating means on the cap in mating relationship with the locating means on the hub; and inserting solvent into the outer end of the bore in the cap to solvent bond the cap to the plug on the stylet with the cap and hub, and stylet and cannula in proper alignment with each other.
Claim 3
Dependent Claim
22 words
The method according to claim 1 wherein said hub is made of a material from the group consisting of polyethylene and polypropylene.
Claim 4
Dependent Claim
10 words
A needle assembly made by the method of claim 1.
Claim 5
Dependent Claim
15 words
The method according to claim 1 wherein said plug is made of solvent bondable material.
Claim 6
Dependent Claim
13 words
The method according to claim 4 wherein said solvent bondable material is ABS.
Claim 7
Dependent Claim
15 words
The method according to claim 1 wherein said cap is made of solvent bondable material.
Claim 8
Dependent Claim
13 words
The method according to claim 6 wherein said solvent bondable material is ABS.
Claim 9
Dependent Claim
22 words
The method according to claim 1 wherein said plug is fixed to said stylet by inserting molding said plug to the stylet.
Claim 10
Dependent Claim
17 words
The method according to claim 1 wherein said plug is fixed to said stylet by an adhesive.
Claim 11
Dependent Claim
12 words
The method according to claim 9 wherein said adhesive is an epoxy.
Claim 12
Dependent Claim
19 words
The method according to claim 1 wherein said locating means on the cannula hub is a notch formed therein.
Claim 13
Dependent Claim
29 words
The method according to claim 1 wherein said locating means on said stylet cap is a protrusion designed to be matingly received in the notch in the cannula hub.
Claim 14
Dependent Claim
13 words
The method according to claim 1 wherein said solvent comprises methyl ethyl ketone.
Claim 15
Dependent Claim
10 words
A needle assembly made by the method of claim 13.
Claim 16
Dependent Claim
30 words
The method according to claim 1 wherein the points on the distal ends of the cannula and the stylet are ground and cleaned separately prior to formation of the assembly.
Claim 17
Dependent Claim
10 words
A needle assembly made by the method of claim 15.
Claim 18
Dependent Claim
23 words
The method according to claim 1 wherein the solvent is quick acting and bonds the cap to the plug in a few seconds.
Claim 19
Dependent Claim
108 words
A needle assembly comprising: a cannula, an orienting hub fixed to the proximal end of said cannula, said hub having locating means thereon, a stylet, a plug fixed to the proximal end of said stylet, and a cap received over said plug, and means for fixing said cap to said plug, said cap having locating means thereon adapted to mate with the locating means on said hub, and said cap having been fixed to said plug with said locating means of said hub and cap in mating engagement and with the distal end of said cannula in longitudinal and rotational alignment with the distal end of said stylet.
Claim 20
Dependent Claim
108 words
A needle assembly comprising: a cannula, an orienting hub fixed to the proximal end of said cannula, said hub having locating means thereon, a stylet, a plug fixed to the proximal end of said stylet, and a cap received over said plug, and means for fixing said cap to said plug, said cap having locating means thereon adapted to mate with the locating means on said hub, and said cap having been fixed to said plug with said locating means of said hub and cap in mating engagement and with the distal end of said cannula in longitudinal and rotational alignment with the distal end of said stylet.
Claim 21
Dependent Claim
23 words
The assembly according to claim 18 wherein said hub is made of a material selected from the group consisting of polyethylene and polypropylene.
Claim 22
Dependent Claim
17 words
The assembly according to claim 18 wherein said cap is fixed to said plug by a solvent.
Claim 23
Dependent Claim
13 words
The assembly according to claim 20 wherein said solvent comprises methyl ethyl ketone.
Claim 24
Dependent Claim
25 words
The assembly according to claim 20 wherein said solvent is a quick acting solvent which bonds said cap to said plug in a few seconds.
Claim 25
Dependent Claim
16 words
The assembly according to claim 18 wherein said plug is made of a solvent bondable material.
Claim 26
Dependent Claim
13 words
The assembly according to claim 23 wherein said solvent bondable material is ABS.
Claim 27
Dependent Claim
15 words
The assembly according to claim 18 wherein said cap is made of solvent bondable material.
Claim 28
Dependent Claim
13 words
The assembly according to claim 26 wherein said solvent bondable material is ABS.
Claim 29
Dependent Claim
22 words
The assembly according to claim 18 wherein said plug is fixed to said stylet by insert molding said plug to said stylet.
Claim 30
Dependent Claim
17 words
The assembly according to claim 18 wherein said plug is fixed to said stylet by an adhesive.
Claim 31
Dependent Claim
12 words
The assembly according to claim 28 wherein said adhesive is an epoxy.
Claim 32
Dependent Claim
19 words
The assembly according to claim 18 wherein said locating means on the cannula hub is a notch formed therein.
Claim 33
Dependent Claim
31 words
The assembly according to claim 30 wherein said locating means on said stylet cap is a protrusion on said cap configured to be matingly received in said notch in said hub.
Claim 34
Dependent Claim
26 words
The assembly according to claim 18 wherein said points of said cannula and said stylet are ground and cleaned separately prior to formation of the assembly.
Claim 35
Independent Claim
170 words
A method for fabricating a needle assembly comprising an outer cannula, an inner stylet, an orienting hub on the proximal end of the cannula, and a mating locating cap on the proximal end of the stylet, said method comprising the steps of: fixing a plug of plastic material on the proximal end of the stylet; inserting the distal end of the stylet into the proximal end of the cannula having a hub with locating means at the proximal end of the cannula; aligning the distal end of the stylet longitudinally and rotationally with the distal end of the cannula; placing a locating cap having a throughbore over the plastic plug on the proximal end of the stylet inserted into the cannula and aligned at the outer end thereof with the stylet; positioning locating means on the cap in mating relationship with the locating means on the hub; and fixing the cap to the plug on the stylet with the cap, hub, stylet, and cannula in proper alignment with each other.
Claim 36
Independent Claim
170 words
A method for fabricating a needle assembly comprising an outer cannula, an inner stylet, an orienting hub on the proximal end of the cannula, and a mating locating cap on the proximal end of the stylet, said method comprising the steps of: fixing a plug of plastic material on the proximal end of the stylet; inserting the distal end of the stylet into the proximal end of the cannula having a hub with locating means at the proximal end of the cannula; aligning the distal end of the stylet longitudinally and rotationally with the distal end of the cannula; placing a locating cap having a throughbore over the plastic plug on the proximal end of the stylet inserted into the cannula and aligned at the outer end thereof with the stylet; positioning locating means on the cap in mating relationship with the locating means on the hub; and fixing the cap to the plug on the stylet with the cap, hub, stylet, and cannula in proper alignment with each other.
References Cited (Backward Citations)
US2996105A
Cited
US2998050A
Cited
US3133849A
Cited
US3523531A
Cited
US3359619A
Cited
US3756235A
Cited
US3782381A
Cited
US4137117A
Cited
US4233974A
Cited
US4240425A
Cited
US4240423A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |