U.S. patent number 3,769,975 [Application Number 05/202,192] was granted by the patent office on 1973-11-06 for slit sleeve for preventing displacement in a catheter assembly.
This patent grant is currently assigned to Johnson & Johnson. Invention is credited to Melvin Nimoy, Alon P. Winnie.
United States Patent |
3,769,975 |
Nimoy , et al. |
November 6, 1973 |
SLIT SLEEVE FOR PREVENTING DISPLACEMENT IN A CATHETER ASSEMBLY
Abstract
An intravenous catheter assembly is constructed with a flexible
plastic catheter for introduction into a body member and a flexible
plastic tubing secured coaxially to the proximal end thereof by a
wing section. An introducer needle extends completely through the
coaxially aligned lumens of the catheter and tubing and a removable
plastic sleeve having a longitudinal slit therein is positioned
over the tubing between the wing section and the tubing hub to
prevent displacement of the wing section toward the hub during the
catheter introduction procedure.
Inventors: |
Nimoy; Melvin (East Brunswick,
NJ), Winnie; Alon P. (Wilmette, IL) |
Assignee: |
Johnson & Johnson (New
Brunswick, NJ)
|
Family
ID: |
22748852 |
Appl.
No.: |
05/202,192 |
Filed: |
November 26, 1971 |
Current U.S.
Class: |
604/165.02;
604/177 |
Current CPC
Class: |
A61M
25/0606 (20130101) |
Current International
Class: |
A61M
25/06 (20060101); A61m 005/14 (); A61m
025/00 () |
Field of
Search: |
;128/214.4,221,348,DIG.26,214R |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
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|
|
|
|
|
|
70,711 |
|
Jan 1970 |
|
DL |
|
136,008 |
|
May 1960 |
|
SU |
|
Other References
Brooks, "Modification of Polyethylene Catheter for Intravenous
Infusions," International Abstracts of Surgery; May, 1958, p.
506..
|
Primary Examiner: Gaudet; Richard A.
Assistant Examiner: McGowan; J. C.
Claims
What is claimed is:
1. An intravenous catheter assembly, comprising: a flexible plastic
catheter having a lumen extending therethrough; a flexible plastic
tubing having a lumen extending therethrough in alignment with the
lumen in said catheter; gripping means connected to the proximal
end of said catheter and to the distal end of said tubing; a hub
secured to the proximal end of said tubing; an introducer needle
extending completely through said lumens from said hub to beyond
the distal end of said catheter; and removable rigid support means
disposed between said hub and said gripping means for positively
preventing displacement of said gripping means toward said hub
during the introduction of said needle and catheter into a
patient.
2. The catheter assembly of claim 1, wherein said support means is
a rigid removable sleeve that extends over said tubing from said
hub to said gripping means.
3. The catheter assembly of claim 2, wherein said sleeve is
substantially cylindrical with a slit extending longitudinally
thereof.
4. The catheter assembly of claim 1, wherein said gripping means is
a wing section.
Description
BACKGROUND OF THE INVENTION
This invention relates to intravenous catheter assemblies and, more
particularly, to a plastic intravenous catheter having a flexible
plastic tubing secured to the proximal end thereof for assisting in
the connection of the catheter assembly to an administration set.
The invention is further directed to a stabilizing support means
for preventing displacement of the catheter during the introduction
procedure.
It has long been the practice in the administration of fluids to
the body to utilize a metal needle having a flexible plastic tubing
secured to the proximal end thereof. It is also known to utilize a
gripping means, such as a wing section, in conjunction with the
metal needle to assist in the introduction of the needle into a
vein. Such an intravenous needle assembly is illustrated in U.S.
Pat. No. 3,064,648. This type of needle assembly is effective for
the administration of fluids into a vein, however, it is considered
to be a serious problem to permit such a metal needle to dwell
within a vein for an extended period of time. The extremely sharp
point on the needle frequently causes damage to the vein wall and
excess movement of the body member can actually cause the needle
point to penetrate the vein and create serious problems.
Plastic catheters having gripping means for aiding in the insertion
of the catheter into a vein have also been used, however, it has
previously been impossible to provide such a device having a
flexible plastic tubing permanently secured coaxial with the
proximal end thereof. This is true because it is necessary to
provide an introducer needle in combination with the plastic
catheter to effect the introduction of the catheter into the vein.
Without such an introducer needle, it would be impossible to
penetrate the skin and the vein wall with the flexible catheter
material.
SUMMARY OF THE INVENTION
The present invention overcomes the foregoing disadvantages by
providing a plastic catheter having a flexible plastic tubing
secured to the proximal end thereof by a gripping means in the form
of a wing section. The catheter assembly is constructed to receive
an introducer needle that extends completely through the lumens of
the catheter and tubing so that it may be appropriately withdrawn
after the catheter has been introduced into a body member. By thus
removing the introducer needle, it is possible to have a unitary
construction which includes only the catheter and tubing. In order
to prevent displacement of the catheter toward the hub of the
plastic tubing during the introduction procedure, a stabilizing
support member has been provided which prevents the tubing from
collapsing during the introduction procedure.
BRIEF DESCRIPTION OF THE DRAWING
The invention will be particularly described with reference to the
following detailed description of the preferred embodiment of the
invention when considered together with the attached drawing, in
which:
FIG. 1 is a perspective view of the intravenous catheter assembly
of the present invention;
FIG. 2 is a longitudinal cross sectional view of the intravenous
catheter assembly shown in FIG. 1; and
FIG. 3 is a cross sectional view taken along line 3--3 in FIG.
2.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment of the intravenous catheter assembly of
this invention is shown generally at 10 in FIG. 1. The primary
component of the assembly comprises a flexible plastic catheter 11
and a flexible plastic tubing 12. Catheter 11 and tubing 12 are
secured in coaxial alignment by a gripping means which is
illustrated in the preferred embodiment as a wing section 13. Wing
section 13 is preferably constructed with a fairly rigid plastic
tubular member 14 into which the proximal end of catheter 11 and
the distal end of tubing 12 are secured, as by epoxy or some other
suitable adhesive. Wing section 13 also has a pair of wings 15 and
16 which are preferably formed from relatively flexible plastic
material so that they may be deformed upwardly in a coplanar
position for aiding in the insertion of the catheter into a body
member and subsequently folded downwardly into the position shown
in FIG. 1 for taping to the skin of the body member in a well known
manner.
Although the material of which catheter 11 is constructed is not
critical, it is preferred that the catheter be made of a
semiflexible material such as polyethylene, polyvinyl chloride,
polypropylene or polytetrafluoroethylene. Also, it is preferred
that catheter 11 have a beveled distal end as shown at 19 in FIG. 1
to facilitate the penetration of the body member.
The material utilized in the construction of tubing 12 is also not
critical, however, it is preferred that this material be relatively
flexible and soft so that the tubing can be easily manipulated for
attachment of the fittings of an administration set or other
suitable fluid infusion device. The preferred material usuable in
this invention for tubing 12 is soft polyvinyl chloride. A standard
metal or plastic hub 20 is formed integral with the proximal end of
tubing 12 to receive the hub of an introducer needle in a manner to
be described hereinbelow and to subsequently provide a fitting for
the administration set.
Referring now particularly to FIG. 2, an introducer needle 21 is
shown in position within the lumens of catheter 11 and tubing 12
extending completely therethrough from hub 20 to beyond the distal
end of catheter 11. Introducer needle 21 is equipped with an
appropriate point 22 for penetrating the skin of a patient and for
providing a means for introducing catheter 11 into the body member
of the patient. Needle 21 is provided with a standard luer-type hub
23 which cooperates with luer hub 20 during the introduction of the
catheter assembly into the appropriate body member.
In the procedure for introducing catheter 11 into a body member,
the catheter assembly 10 is fully assembled as illustrated in FIG.
2. Introducer needle 21 is positioned completely through the lumens
of catheter 11 and tubing 12, and hub 23 is arranged within hub 20
to secure the assembly together. In order to perform the
venipuncture, the nurse or doctor manipulates wings 15 and 16 into
an upright, coplanar position in contact with one another and
inserts catheter 11 with needle point 22 extending beyond the
distal end thereof into a vein or other body member. During this
operation, it has been found that the leading end 19 of catheter 11
has a tendency to resist entry into the vein and, therefore, has a
tendency to be displaced rearwardly toward hub 20. Since the
flexible plastic tubing 12 is relatively soft and pliable, it has a
tendency to become deformed and permit the aforementioned
displacement of catheter 11. This is an undesirable condition and,
therefore, stabilizing support means have been provided to
alleviate this condition.
The preferred stabilizing support means usable with this invention
is illustrated in the drawing in the form of a rigid plastic sleeve
25. Sleeve 25 is substantially cylindrical and is equipped with a
longitudinally extending slit 26 which permits the removal of
sleeve 25 after the venipuncture has been accomplished and the
needle 21 has been removed from the catheter assembly. It will,
thus, be apparent that the entire catheter assembly may be provided
commercially in the completely assembled condition illustrated in
FIG. 2. After the catheter assembly has been secured into position
within a vein and wings 15 and 16 have been appropriately taped or
otherwise secured to the skin to hold catheter 11 in position, it
is only necessary to remove needle 21 and to spread the sleeve 25
in order to open the sleeve an amount sufficient to remove the
sleeve from tubing 12. The flexible tubing 12 will then be
available for further manipulation and attachment of hub 20 to the
fitting on an administration set.
It will, thus, be apparent that the subject invention provides a
unique intravenous catheter assembly which comprises a unitary
assembly with a catheter having a flexible tubing secured
proximally thereof. The introduction of the catheter is facilitated
by a stabilizing support means which prevents the longitudinal
displacement of the catheter relative to an introducer needle
during the venipuncture procedure.
* * * * *