US4574173A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for RF welding an IV tube to a catheter lumen
Assignee: Deseret Medical Inc
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Filing: 1984-05-04
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Granted: 1986-03-04
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Expires: 2004-05-04
Abstract
Abstract A device for welding an IV tube into fluid communication with a lumen of a catheter comprises a grounded metal adapter which is operatively associated with a dielectric collet to clampingly engage and hold a catheter in the collet. The device further comprises a metal mandrel which is partially inserted into an IV tube and positioned so that part of the IV tube and mandrel extend into a portion of a lumen of the catheter. With the IV tube and mandrel positioned in the lumen, the dielectric collet is further engaged to compressingly urge the lumen sidewall into contact with the outer surface of the IV tube. RF energy is then applied to the mandrel to weld the IV tube into the lumen.
Inventors
- 👤 Laurence M. Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:49
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/0009; B; B29; B29C; B29C65/00; B29C65/02; B29C65/04; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/80; B29C66/81; B29C66/812; B29C66/8126; B29C66/81262; B29C66/81263; H; H05; H05B; H05B6/00; H05B6/46; H05B6/62; B29C66/50; B29C66/51; B29C66/52; B29C66/522; B29C66/5227; B29C66/52271; B29C66/53; B29C66/534; B29C66/5344; B29C66/70; B29C66/71; B29C66/816; B29C66/8167; B29L; B29L2031/00; B29L2031/60; B29L2031/601; B29L2031/602; B29L2031/753; B29L2031/7542
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
88 words
A device for RF welding an IV tube to a multilumen catheter comprising: means cooperative with said catheter for compressively engaging a portion of said IV tube with a dimensionally incompatible portion of a lumen of said catheter; an electrically conductive mandrel insertable into said IV tube; an electrical ground associated with said compressive means; and means connectable with said mandrel for generating RF energy between said mandrel and said ground to weld a continuous and integral bond at the interface between said IV tube and said catheter.
Claim 2
Independent Claim
88 words
A device for RF welding an IV tube to a multilumen catheter comprising: means cooperative with said catheter for compressively engaging a portion of said IV tube with a dimensionally incompatible portion of a lumen of said catheter; an electrically conductive mandrel insertable into said IV tube; an electrical ground associated with said compressive means; and means connectable with said mandrel for generating RF energy between said mandrel and said ground to weld a continuous and integral bond at the interface between said IV tube and said catheter.
Claim 3
Dependent Claim
25 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 1 wherein said compressive means further comprises a collet.
Claim 4
Dependent Claim
26 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 2 wherein said collet is made of a dielectric material.
Claim 5
Dependent Claim
26 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 3 wherein said mandrel is made of beryllium copper alloy.
Claim 6
Dependent Claim
46 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 4 further comprising: a metal collet operatively associated with said dielectric collet for urging said dielectric collet into compressive engagement with said catheter; and means to activate said metal collet.
Claim 7
Dependent Claim
27 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 5 wherein said metal collet is made of beryllium copper alloy.
Claim 8
Dependent Claim
53 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 6 further comprising: an adapter having a bore to slidably receive said metal collet for operative association therewith to activate said metal collet; and means for reciprocally sliding said metal collet within the bore of said adapter.
Claim 9
Dependent Claim
28 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 7 wherein said catheter and said IV tubes are made of polyurethane.
Claim 10
Dependent Claim
26 words
A device for RF welding an IV tube to a multilumen catheter as recited in claim 8 wherein said catheter is made of a radiopaque polyurethane.
Claim 11
Independent Claim
125 words
A device for welding an IV tube in fluid communicating with a lumen of a catheter comprising: a support; a grounded adapter having a tapered bore therethrough mounted on said support; a metal collect forming a passageway and slidably disposed in the tapered bore of said adapter for operative association therewith; a dielectric collect disposed in the passageway of said metal collet and operatively associated with said metal collet for clamping engagement with said catheter; a metal mandrel insertably engaged with said IV tube; means for clamping said dielectric collet onto said catheter; means for positioning at least a portion of said IV tube-mandrel combination into said lumen; and means for applying RF energy to said mandrel for welding said IV tube to said lumen.
Claim 12
Independent Claim
125 words
A device for welding an IV tube in fluid communicating with a lumen of a catheter comprising: a support; a grounded adapter having a tapered bore therethrough mounted on said support; a metal collect forming a passageway and slidably disposed in the tapered bore of said adapter for operative association therewith; a dielectric collect disposed in the passageway of said metal collet and operatively associated with said metal collet for clamping engagement with said catheter; a metal mandrel insertably engaged with said IV tube; means for clamping said dielectric collet onto said catheter; means for positioning at least a portion of said IV tube-mandrel combination into said lumen; and means for applying RF energy to said mandrel for welding said IV tube to said lumen.
Claim 13
Dependent Claim
24 words
A welding device as recited in claim 10 wherein said adapter, said metla collet and said mandrel are made of a beryllium copper alloy.
Claim 14
Dependent Claim
19 words
A welding device as recited in claim 11 wherein said IV tube and said catheter are made of polyurethane.
Claim 15
Dependent Claim
17 words
A welding device as recited in claim 12 wherein said catheter is made of a radiopaque polyurethane.
Claim 16
Independent Claim
161 words
A method for RF welding an IV tube into fluid communication with a lumen of a catheter comprising the steps of: a. positioning at least a portion of said IV tube into a portion of the lumen of said catheter; b. placing said IV tube and catheter combination in operative association with a device comprising a support, a grounded adapter having a tapered bore therethrough mounted on said support, a metal collet forming a passageway and slidably disposed in the tapered bore of said adapter for operative association therewith, a dielectric collet disposed in the passageway of said metal collet and operatively associated with said metal collect for clamping engagement with said catheter, a metal mandrel insertably engaged with said IV tube, and means for clamping said dielectric collet onto said catheter; c. activating said device to clampingly engage said dielectric collet with said catheter; and d. applying RF energy to said mandrel for welding said IV tube to said lumen.
Claim 17
Independent Claim
161 words
A method for RF welding an IV tube into fluid communication with a lumen of a catheter comprising the steps of: a. positioning at least a portion of said IV tube into a portion of the lumen of said catheter; b. placing said IV tube and catheter combination in operative association with a device comprising a support, a grounded adapter having a tapered bore therethrough mounted on said support, a metal collet forming a passageway and slidably disposed in the tapered bore of said adapter for operative association therewith, a dielectric collet disposed in the passageway of said metal collet and operatively associated with said metal collect for clamping engagement with said catheter, a metal mandrel insertably engaged with said IV tube, and means for clamping said dielectric collet onto said catheter; c. activating said device to clampingly engage said dielectric collet with said catheter; and d. applying RF energy to said mandrel for welding said IV tube to said lumen.
Claim 18
Independent Claim
140 words
A device for RF welding an IV tube to a multilumen catheter comprising: a dielectric collet cooperative with said catheter for compressively engaging a portion of said IV tube with a portion of a lumen of said catheter; an electrically conductive mandrel insertable into said IV tube; a metal collet for providing an electrical ground and operatively associated with said dielectric collet for urging said dielectric collet into compressive engagement with said catheter; an adapter having a bore to slidably receive said metal collet for operative association therewith to activate said metal collet; means for reciprocally sliding said metal collet within the bore of said adapter; and means connectable with said mandrel for generating RF energy between said mandrel and said metal collet to weld a continuous and integral bond at the interface between said IV tube and said catheter.
Claim 19
Independent Claim
140 words
A device for RF welding an IV tube to a multilumen catheter comprising: a dielectric collet cooperative with said catheter for compressively engaging a portion of said IV tube with a portion of a lumen of said catheter; an electrically conductive mandrel insertable into said IV tube; a metal collet for providing an electrical ground and operatively associated with said dielectric collet for urging said dielectric collet into compressive engagement with said catheter; an adapter having a bore to slidably receive said metal collet for operative association therewith to activate said metal collet; means for reciprocally sliding said metal collet within the bore of said adapter; and means connectable with said mandrel for generating RF energy between said mandrel and said metal collet to weld a continuous and integral bond at the interface between said IV tube and said catheter.
Claim 20
Dependent Claim
20 words
A device as recited in claim 15 wherein said mandrel and said metal collet are made of beryllium copper alloy.
Claim 21
Dependent Claim
18 words
A device as recited in claim 16 wherein said catheter and said IV tubes are made of polyurethane.
Claim 22
Dependent Claim
16 words
A device a recited in claim 17 wherein said catheter is made of a radiopaque polyurethane.
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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) | 1989-03-03 | 1989-09-02 | 1990-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-03-03 | 1993-09-02 | 1994-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-03-03 | 1997-09-02 | 1998-03-04 | $7700.00 | Window Closed / Lapsed |