US3734095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid infusion
Assignee: Individual
•
Filing: 1971-05-21
•
Granted: 1973-05-22
•
Expires: 1991-05-21
Abstract
Abstract A novel fluid infusion assembly and method, the assembly comprising a stylet catheter and associated novel guide core which carries a surmounting self-sealing penetrable jacket accommodating placement of a stylet needle within the catheter prior to venipuncture and removal of the stylet needle subsequent to venipuncture while a fluid delivery tube is continuously communicating fluid to the catheter. An improved fluid coupling is adapted to penetrate the jacket and guide core at selected locations to provide an alternate site for delivering fluid to the catheter or for delivering a plurality of fluids to the catheter simultaneously. The stylet needle has, at the curved terminal end thereof, an upstanding tab which novelly accommodates (1) aspiration of blood from the vein to a transparent portion of the tab, or (2) outflow of blood from the vein to a transparent portion of the tab by normal blood pressure and capillary action to evince a successful venipuncture. The method includes squeezing the tab prior to and during venipuncture and thereafter aspirating blood into the tab and also removing the stylet needle and penetrating the self-sealing jacket with a fluid connector.
Inventors
- 👤 L Santomieri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:54
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0693; A61M39/00; A61M39/02; Y; Y10; Y10S; Y10S604/00; Y10S604/90
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
221 words
A stylet catheter assembly comprising: an essentially linear catheter tube of pliable material defining the major axis of the assembly and having a forward tip to be introduced into the vein of a patient; an exterior female fitting in the nature of a substantially rigid sleeve attached to the trailing end of the catheter tube, said fitting comprising a hollow bore which opens at the trailing end thereof and an exposed side wall having an elongated opening in the side wall; an elastomeric hollow self-sealing jacket generally axially situated within and essentially contiguous to the hollow bore of the fitting, the jacket being laterally exposed to the exterior at said elongated opening; a circuitously shaped elongated piercing means axially coextensively disposed within the catheter tube and comprising a forward sharpened end extending beyond the forward tip of the catheter tube and a handle at the trailing end of the piercing means, an intermediate portion of the piercing means angularly extending through the jacket and through the side wall of the fitting at the elongated opening and; separate hollow guide means situated within the female fitting adjacent the trailing end of the catheter tube through which the piercing means extends, which guide means restricts to and fro displacement of the piercing means within the catheter tube to movement along said major axis.
Claim 2
Dependent Claim
221 words
A stylet catheter assembly comprising: an essentially linear catheter tube of pliable material defining the major axis of the assembly and having a forward tip to be introduced into the vein of a patient; an exterior female fitting in the nature of a substantially rigid sleeve attached to the trailing end of the catheter tube, said fitting comprising a hollow bore which opens at the trailing end thereof and an exposed side wall having an elongated opening in the side wall; an elastomeric hollow self-sealing jacket generally axially situated within and essentially contiguous to the hollow bore of the fitting, the jacket being laterally exposed to the exterior at said elongated opening; a circuitously shaped elongated piercing means axially coextensively disposed within the catheter tube and comprising a forward sharpened end extending beyond the forward tip of the catheter tube and a handle at the trailing end of the piercing means, an intermediate portion of the piercing means angularly extending through the jacket and through the side wall of the fitting at the elongated opening and; separate hollow guide means situated within the female fitting adjacent the trailing end of the catheter tube through which the piercing means extends, which guide means restricts to and fro displacement of the piercing means within the catheter tube to movement along said major axis.
Claim 3
Dependent Claim
33 words
In an assembly as defined in claim 1 wherein said jacket comprises an outwardly projecting thickened portion which essentially fills the elongated opening in the fitting and through which the piercing means passes.
Claim 4
Dependent Claim
21 words
In an assembly as defined in claim 1 wherein said angularly extending portion of the piercing means comprises a curvilinear configuration.
Claim 5
Dependent Claim
43 words
In an assembly as defined in claim 1 wherein the angularly extending portion of the piercing means comprises a laterally offset portion defining a heel in the piercing means to gently resist movement of the piercing means into or out of the jacket.
Claim 6
Dependent Claim
86 words
In an apparatus as defined in claim 1 wherein the piercing means comprises a needle and wherein the handle comprises a resiliently flexible tab and forms an enclosure around the terminal end of the needle, the tab being essentially transparent at least adjacent the location of the enclosed terminal end of the needle so that the tab may be finger-compressed prior to venipuncture to expel air from the enclosure and released after venipuncture to aspirate blood through the needle to evince completion of a proper venipuncture.
Claim 7
Dependent Claim
69 words
In an apparatus as defined in claim 1 wherein the piercing means comprises a needle and wherein the handle comprises a tab which is provided with a visually observable fluid reservoir communicating with the proximal end of the needle and also with the exterior of the tab through a small opening whEreby blood will flow into the reservoir and become visually observable upon the completion of a successful venipuncture.
Claim 8
Dependent Claim
25 words
The catheter assembly of claim 1 wherein the piercing means comprise a hollow needle and the handle comprises an interior hollow pocket for causing flashback.
Claim 9
Dependent Claim
17 words
The catheter assembly of claim 1 wherein the jacket is interposed between the sleeve and the guide.
Claim 10
Dependent Claim
21 words
The catheter assembly of claim 1 wherein the jacket and the guide are serially disposed within the sleeve along said axis.
Claim 11
Dependent Claim
23 words
The catheter assembly of claim 1 wherein the handle is partially hollow for accommodating aspiration and flashback and partially solid for accommodating venipuncture.
Claim 12
Dependent Claim
25 words
The catheter assembly of claim 1 wherein the jacket comprises a thick radially projecting portion disposed within the side wall opening of the female fitting.
Claim 13
Dependent Claim
26 words
The catheter assembly of claim 1 wherein said side wall opening of the female fitting comprises a ramp surface for directing displacement of the piercing means.
Claim 14
Dependent Claim
200 words
A stylet catheter assembly comprising a hollow catheter tube, an outer sleeve integral with the catheter tube, an internal guide core disposed within the sleeve, a penetrable self-sealing inner jacket interposed between the outer sleeve and the guide core, and a stylet comprising a hollow needle which comprises an elongated linear leading portion extending through and beyond the catheter tube and a curvilinear terminal portion which projects through the jacket and out the side of the sleeve, a handle secured behind the curvilinear terminal portion, the stylet being adapted to (1) selectively penetrate the inner jacket through openings in the outer sleeve to a position telescopically within the catheter for insertion of the catheter into the lumen of a vein and (2) be completely removed from the catheter after venipuncture with negligible loss of blood the curvilinear portion of the needle further comprising an aperture disposed adjacent the linear portion and the inner guide core further comprising an inwardly-projecting protuberance which, when the needle is in a predetermined position, obstructs the aperture therein and, when the needle is moved from the predetermined position, maintains the aperture in an unobstructed location thereby providing fluid communication through the aperture and the needle.
Claim 15
Dependent Claim
200 words
A stylet catheter assembly comprising a hollow catheter tube, an outer sleeve integral with the catheter tube, an internal guide core disposed within the sleeve, a penetrable self-sealing inner jacket interposed between the outer sleeve and the guide core, and a stylet comprising a hollow needle which comprises an elongated linear leading portion extending through and beyond the catheter tube and a curvilinear terminal portion which projects through the jacket and out the side of the sleeve, a handle secured behind the curvilinear terminal portion, the stylet being adapted to (1) selectively penetrate the inner jacket through openings in the outer sleeve to a position telescopically within the catheter for insertion of the catheter into the lumen of a vein and (2) be completely removed from the catheter after venipuncture with negligible loss of blood the curvilinear portion of the needle further comprising an aperture disposed adjacent the linear portion and the inner guide core further comprising an inwardly-projecting protuberance which, when the needle is in a predetermined position, obstructs the aperture therein and, when the needle is moved from the predetermined position, maintains the aperture in an unobstructed location thereby providing fluid communication through the aperture and the needle.
Claim 16
Dependent Claim
127 words
A stylet catheter assembly comprising a concentric arrangement of parts comprising: a pliable substantially linear catheter tube which defines an axis; a substantially rigid female sleeve fitting attached to the proximal end of the catheter tube; a generally hollow guide core disposed concentrically within the female fitting and having an annular wall with a forward distal central bore the axis of which is common with the axis of the catheter tube, the guide core having a side slot and a side aperture adjacent but spaced one from the other, each being essentially transverse to said axes; a resilient elastomeric sleeve disposed concentrically within the female sleeve fitting between the fitting and the guide core so as to seal the slot, aperture and hollow of the guide core.
Claim 17
Dependent Claim
127 words
A stylet catheter assembly comprising a concentric arrangement of parts comprising: a pliable substantially linear catheter tube which defines an axis; a substantially rigid female sleeve fitting attached to the proximal end of the catheter tube; a generally hollow guide core disposed concentrically within the female fitting and having an annular wall with a forward distal central bore the axis of which is common with the axis of the catheter tube, the guide core having a side slot and a side aperture adjacent but spaced one from the other, each being essentially transverse to said axes; a resilient elastomeric sleeve disposed concentrically within the female sleeve fitting between the fitting and the guide core so as to seal the slot, aperture and hollow of the guide core.
Claim 18
Dependent Claim
71 words
In an assembly as defined in claim 14 further comprising a hollow fluid coupling comprising a forwardly-tapered outwardly-projecting leading end removably inserted through an aperture in the female fitting the aperture in the guide core and the elastomeric sleeve in fluid-sealed relation the hollow fluid coupling also comprising a female connection adapted to receive conventional male infusion connectors whereby infusion of the fluid through the coupling into the catheter is accommodated.
Claim 19
Dependent Claim
134 words
In a stylet catheter assembly comprising an internally hollow guide core which has a peripherally disposed elongated side wall opening communicating with the hollow of the guide core to the exterior thereof and an aperture offset from the elongated opening; a fluid impervious resiliently flexible sleeve superimposed upon the guide core in fluid-sEaling relation; an elongated hollow catheter tube in coaxial relation with the hollow core; and an outer housing superimposed over the flexible sleeve and guide core, the outer housing having an axially elongated slot which, in the assembled position, is aligned with the side wall opening in the guide core and an aperture aligned with the aperture in the core; and tortuously shaped elongated piercing means extending through the slot, the sleeve, the side wall opening, both apertures and the catheter tube.
Claim 20
Dependent Claim
134 words
In a stylet catheter assembly comprising an internally hollow guide core which has a peripherally disposed elongated side wall opening communicating with the hollow of the guide core to the exterior thereof and an aperture offset from the elongated opening; a fluid impervious resiliently flexible sleeve superimposed upon the guide core in fluid-sEaling relation; an elongated hollow catheter tube in coaxial relation with the hollow core; and an outer housing superimposed over the flexible sleeve and guide core, the outer housing having an axially elongated slot which, in the assembled position, is aligned with the side wall opening in the guide core and an aperture aligned with the aperture in the core; and tortuously shaped elongated piercing means extending through the slot, the sleeve, the side wall opening, both apertures and the catheter tube.
Claim 21
Dependent Claim
108 words
An intravascular catheter assembly comprising a linearly directed hollow plastic catheter to be placed in the cardiovascular system via venipuncture, the improvement comprising hollow venipuncture structure for intravascular therapy comprising an elongated tortuously configurated shaft comprising a linearly extending portion disposed within the hollow of the plastic catheter, and terminating in an exposed sharp leading tip, an intermediate portion integral with and extending at least partially transverse of the linearly extending portion through a hole in the side of the linear catheter and a handle integral with the intermediate transverse portion, the handle comprising a blood flashback chamber in fluid communication with the interior of the intermediate portion.
Claim 22
Dependent Claim
108 words
An intravascular catheter assembly comprising a linearly directed hollow plastic catheter to be placed in the cardiovascular system via venipuncture, the improvement comprising hollow venipuncture structure for intravascular therapy comprising an elongated tortuously configurated shaft comprising a linearly extending portion disposed within the hollow of the plastic catheter, and terminating in an exposed sharp leading tip, an intermediate portion integral with and extending at least partially transverse of the linearly extending portion through a hole in the side of the linear catheter and a handle integral with the intermediate transverse portion, the handle comprising a blood flashback chamber in fluid communication with the interior of the intermediate portion.
Claim 23
Dependent Claim
51 words
The improvement of claim 17 wherein the shaft is hollow and the handle comprises a hollow aspirating tab, the hollow of the tab being connected to the hollow of the shaft for at least partial manual evacuation of air from the shaft prior to venipuncture and vacuum driven flashback after venipuncture.
Claim 24
Dependent Claim
31 words
The improvement of claim 17 wherein the shaft is hollow and the handle comprises an infusion fitting for placing fluids into a patient through the hollow of the shaft upon venipuncture.
Claim 25
Dependent Claim
20 words
The improvement of claim 17 wherein the transverse intermediate portion of the shaft is interposed between two short curved portions.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-21 | 1976-11-20 | 1977-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-21 | 1980-11-20 | 1981-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-21 | 1984-11-20 | 1985-05-22 | $7700.00 | Window Closed / Lapsed |