US3585996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arterial catheter placement unit and method of use
Assignee: LEVOY S CORP
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Filing: 1968-07-11
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Granted: 1971-06-22
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Expires: 1988-07-11
Abstract
Abstract A catheter placement unit for positioning a catheter in a body lumen, such as an artery or vein, for purposes of parenteral infusion, or pressure monitoring, oximetery, or other diagnostic purposes, and a method of utilizing such catheter placement unit. The unit or assembly includes a hollow needle, a hub on the needle and a self-sealing valve in the needle hub; a sheath, a catheter in the sheath, and a hub carrying a hollow pilot projection, removably connected to the sheath. The needle may, if desired, be initially used separately and then the sheath and catheter connected to the needle by joining the hubs with the pilot projection extending through the valve to permit advancing the catheter through the needle into a body lumen.
Inventors
- 👤 Gordon S Reynolds
- 👤 Karl A Pannier Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:45
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/0105; A61M25/0111
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
116 words
A catheter placement assembly, comprising a hollow needle pointed at one end, a hollow hub on the other end of said needle, a self-sealing valve in said hub to prevent an outward flow and loss of blood through the needle when the same is inserted in a body lumen, a sheath having a slit lengthwise thereof, a hollow hub connected to the proximal end of said sheath, a nose on said sheath hub removably frictionally engaged with said needle hub, means on said nose extending through and holding said valve open when the hubs are engaged, a catheter in said sheath, and means for advancing the catheter and removing said sheath when the catheter is advanced.
Claim 2
Dependent Claim
116 words
A catheter placement assembly, comprising a hollow needle pointed at one end, a hollow hub on the other end of said needle, a self-sealing valve in said hub to prevent an outward flow and loss of blood through the needle when the same is inserted in a body lumen, a sheath having a slit lengthwise thereof, a hollow hub connected to the proximal end of said sheath, a nose on said sheath hub removably frictionally engaged with said needle hub, means on said nose extending through and holding said valve open when the hubs are engaged, a catheter in said sheath, and means for advancing the catheter and removing said sheath when the catheter is advanced.
Claim 3
Dependent Claim
24 words
The assembly of claim 1 wherein said catheter is made of material throughout its entire length having the strength and lubricating property of polytetrafluorethylene.
Claim 4
Dependent Claim
64 words
The assembly of claim 1, including a catheter advancer connected to one end of the catheter and partially extending into said sheath, a stop member on said sheath outward of said advancer, and a dead end portion of said sheath outward of said stop member to function as a handle to be held in one hand while manipulating said advancer with the other hand.
Claim 5
Independent Claim
109 words
The method of positioning a catheter contained in a sterile sheath and removably connected at its proximal end to a hub having a hollow pilot projection thereof, with the aid of a hollow needle carrying a hub having a slit self-sealing valve therein, both said hubs being removably and telescopically engageable, including the steps of inserting the hollow needle into a body lumen, blocking the flow of blood through the needle by way of said valve, connecting the sheath to said needle by way of said hubs and simultaneously penetrating said valve with said pilot projection, and advancing the catheter through said sheath and needle into the body lumen.
Claim 6
Independent Claim
109 words
The method of positioning a catheter contained in a sterile sheath and removably connected at its proximal end to a hub having a hollow pilot projection thereof, with the aid of a hollow needle carrying a hub having a slit self-sealing valve therein, both said hubs being removably and telescopically engageable, including the steps of inserting the hollow needle into a body lumen, blocking the flow of blood through the needle by way of said valve, connecting the sheath to said needle by way of said hubs and simultaneously penetrating said valve with said pilot projection, and advancing the catheter through said sheath and needle into the body lumen.
Claim 7
Dependent Claim
63 words
The method of claim 4 wherein the body lumen is percutaneously accessible and including the steps of measuring the distance the catheter has been advanced through said sheath, applying such measurement to the body of the patient to denote when the catheter is in an intrathoracic lumen, and then withdrawing the needle and sheath relatively to the catheter while holding the latter stationary.
References Cited (Backward Citations)
FR328570A
Cited
FR430890A
Cited
US2374368A
Cited
GB689131A
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US3097646A
Cited
US3185152A
Cited
FR1534119A
Cited
US3494352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |