Note: Descriptions are shown in the official language in which they were submitted.
103~
The present invention provides a method for intro-
aucing a catheter into a patient for intravenous provision of
blood and/or medicants comprising the steps of: introducing
into the subclavian vein of the patient a subclavian vena
puncture device comprising a straight hollow needle having a
bevelled lower tip and a syringe removabl~ connected to the
upper end thereof, an equally sized hollow catheter guide tube
fixed to one side of the upper central portion of the needle
extending angularly upwardly therefrom, ana a catheter
temporarily closed by a method stylet therein and telescoped
downwardly neatly through the catheter guide tube to a position ~:
having its lower end disposed just short of the lower end of
the catheter guide tube thereby leaving the main portion of
-the straight hollow needle clear whereby to permit blood to
be aspirated from the subclavian vein responsive to partial
withdrawal of the piston of the syringe; pushing the temporarily
closed catheter downwardly from the catheter guide tube into
and through the lower portion of the needle and into the sub-
clavian vein of the patient to a distance selected by the :surgeon; removing the stylet from the catheter to provide a :`
free passageway therethrough; immediately capping the free end
of the catheter; removing the syringe from the upper end of the
needle and capping the top of the needle; and gently removing
the straight hollow needle from the patient~s vein by sliding
the needle upwardly therefrom, leaving the catheter in the vein
through the upper end of which blood and/or medicants may be
provided to the patient when and as required employing conven-
tional intravenous (I-V) means,
The present invention also provides a subclavian vena
puncture device comprising a straight hollow needle having a
bevelled lower tip and a syringe removably connected to the
upper end thereof, an equally sized hollow catheter guide tube
fixed to one side of the upper central portion of the needle
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1~39S98
extending angularly upwardly therefrom, and a catheter tempor~
arily closed by a metal stylet therein and telescoped down~
wardly neatly through the catheter guide tube to a position
having its lower end disposed just short of the lower end of
the catheter guide tube thereby leaving the main portion of
the straight hollow needle clear.
In the accompanying drawings wherein like reference
characters refer to like and corresponding parts throughout ~ :
the several views: `~
Fig. 1 is a vertical elevational view of a subclavian
vena puncture device embodying the invention showing the lower `
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103~S98
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end of the hollow bevel ended needle thereof punctured through
tne skin and telescoped into the large subclavian vein in the
nsck of a patient.
Fig. 2 is a vertical elevational view ~imilar to
Fig. 1 except that a catheter closed by a metal stylet has been
telescoped into the diagonally upwardly disposed hollow catheter
guide tube projecting diagonally upwardly ~rom the upper portion
of said needle.
Fig. 3 is a vertical elevational view similar to
Fig. 2 except that the catheter has been extended downwardly
through the diagonally upwardly extending hollow catheter guide
tube to and through the lower bevaled end of the said needle,
and into the subclavian vein of the patient therebelow.
Fig. 4 is a vertical elevational view similar to
Fig. 3 showing the syringe removed from the upper end of the
needle and the needle immediately capped; the upper end portion
of the catheter is then closed temporarily by a suitable con-
nector whereby to permit the catheter to be connected to a con-
ventional intravenous (I-V) device through which blood or medi-
2~ cants may be provided to and through the vein of the patient
a-q required.
The improved subclavian vena puncture device 10 dis-
closed in the drawings comprises the combination of a straight
hollow needle 11 having a lower beveled tip 11~ and an upper end
111 which is removably secured by such means as a suitable con-
nector 12 to the lower stem 13~ of a syringe 13. The upper cen-
tral portion of the hollow needle 11 has a substantially equal
sized hollow cath~ter guide tube 14 ~ixed thereto at 140 and 3X-
tends angularly upwardly from one side of the said needle 11.
A catheter 15 temporarily closed by a customarily
employed metal stylet therein is telescoped downwardly through
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ths said catheter gulde tube 14 to a poeition ~u3t short of
the lower end of the said catheter guide tube 14, leaving the
main portion of the straight hollow needle 11 clear whereby
to psrmit blood to be aspirated from the 3ubclavian vein 16
by the syringe 13 responsive to the withdrawal of the piston
131 of the said ~yringe 13. This provides the surgeon with an
opportunity to be assured with re~pect to proper location of the
needle 11 within the vein of the patient.
The catheter 15 with its stylet therein is now
pushed downwardly from the catheter guide tube 14 into the
lower end portion of the straight hollow needle 11 and is con-
tinued therefrom into the patient's subclavian vein 16 to a
~elected distance therein a3 determined by the surgeon. The
stylet is now removed from the catheter providing a clear
passageway through the catheter 15. Suitable connectors 17
are employed aq required to close or open the catheter passage
when and as required.
The straight hollow needle 11 i9 now gently removed
from the patient's vein 1~ by ~liding it out Or the vein, leaving ~:
the relatively soft plastic catheter 15 disposed in the vein
through which blood or medicants may be provided to the patient ~:
as required by the use of conventional intravenous (I-V~ means : :
The preferred subclavian device 1~ of the invention
is made sterile by employing convsntional means, and is made
ready for use with the needle 11 thereof removably connected
at its upper end to the lower stem 130 Or the syringe 13. By
holding the syringe 13 in one hand and guiding the needle 11
in alignment within the subclavian vein lo of the patient with
the other hand, the lower beveled tip 110 Or the needle 11 is
caused to penetrate the skin of the patient and enter the lumen
of the vein.
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The catheter 15 is then slowly pushed downwardly
from its initial position in the oatheter guide tube 14 into
the lumen of the needle 11 and continuss downwardly there~rom
into the vein 16 o~ the patient to the required distance there-
in. The syringe 13 may now be di~connected from the upper end
of the naedle, and ths needle immediately capped.
The upper end o~ the catheter 15 is now connected
to the bottom of the neck of a conventional intravenous (I-V)
means 1~ providing the patient with whatever intravenous ~luids
as may be required and/or allowed by the surgeon. The straight
needle 11 is now gently removed by sliding it out o~ the patient's
vein 16, leaving the relatively soft plastic catheter 15 therein.
It is important that, during the carryin~ out of the
foregoing procedures or other procedures that may be substi-
tuted therefor, at no time should the lumen Or the catheter or
needle be exposed to ambient air. Also, during the insertion
or removal of a stylet into or out o~ a catheter 15, and during
the use or the removal of oonnectors or caps 12, 17, 170 and 171
is being accomplished, such items should be closed by use of a
temporary cover-up thereover as may be required to prevent the
intake of ambient air into the system.
Although but a single embodiment of the subclavian
vena puncture device of the instant invention has been disclosed
and claimed herein, it is obvious that many changes may be made
in size, ~hape, arrangement and detail of the several elements
thereof, all without depart~ng from the spirit and scope of the
invention as defined by the appended claim.
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