U.S. patent number 3,861,393 [Application Number 05/407,216] was granted by the patent office on 1975-01-21 for penetrating device for surgical drainage.
Invention is credited to Herve Durand.
United States Patent |
3,861,393 |
Durand |
January 21, 1975 |
PENETRATING DEVICE FOR SURGICAL DRAINAGE
Abstract
Device for surgical drainage comprising a tube of a flexible
material, the end of which bears a needle intended to be inserted
in flesh. This needle is hollow, at least at its end adjoining the
flexible tube, and this end is fixed by shrinking it upon the
corresponding end of the tube, in which was placed previously a
rigid filling part.
Inventors: |
Durand; Herve (95600 Eaubonne
(Val d'Oise), FR) |
Family
ID: |
9105751 |
Appl.
No.: |
05/407,216 |
Filed: |
October 17, 1973 |
Foreign Application Priority Data
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Oct 17, 1972 [FR] |
|
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72.36701 |
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Current U.S.
Class: |
604/274;
27/24.2 |
Current CPC
Class: |
A61M
25/0069 (20130101) |
Current International
Class: |
A61M
25/00 (20060101); A61m 025/00 (); A61b
017/34 () |
Field of
Search: |
;128/35R,347,214.2,221,278 ;27/24A |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Medbery; Aldrich F.
Attorney, Agent or Firm: Striker; Michael S.
Claims
What I claim is:
1. A penetrating device for surgical drainage comprising a tube of
flexible material; a needle adapted to be inserted in flesh and
having a pointed end and an opposite hollow end portion extending
over and being tightly fitted on a corresponding end portion of
said tube; and a substantially ridig filling part fitted into said
end portion of said tube so that said tube end portion is securely
held between said tightly fitted end portion of said needle and
said filling part.
2. A device as defined in claim 1, wherein said hollow end portion
of said needle has an end edge of a diameter slightly smaller than
the outer diameter of the remainder of the tube downstream of said
end edge of said needle, and wherein said filling part is formed at
the outer surface thereof with an annular groove substantially
radially aligned with said end edge of said needle.
3. A device as defined in claim 1, wherein said needle is formed
from a metallic tube the end of which opposite the tightly fitted
end portion is narrowed to a sharp point.
4. A device as defined in claim 1, wherein said needle is made from
light metal alloy.
5. A device as defined in claim 1, wherein said needle is made from
stainless steel.
6. A device as defined in claim 1, wherein said flexible tube is
made from plastic material.
Description
This invention refers to a device for surgical drainage comprising
essentially a tube adaptable as a drain, an end of which is fitted
with a needle intended for inserting the tube into flesh. So, by
means of the needle, the tube corresponding end can be inserted
into flesh, then brought out again with the needle, which is to be
separated from the tube afterwards in order that the tube can work
as a drain for exhausting or injecting fluids in a human or an
animal body.
Drains, which comprise only a tube of PVC or polythen, with a
middle flexibility, including any number of side holes, were
described by Redon, among others, in Presse Medicale 1955-63, No.
69, page 1,034, and in the French Patent No. 1,308,401. The setting
of such tubes into position requires the use of a rigid,
sharp-pointed needle, which is made usually of stainless steel,
with an outer diameter equal to the flexible tube internal
diameter. To make the needle integral with the tube at the time of
insertion into the tissues, the needle rear part comprises a
threading, or a series of ribs, the outer diameter of which is
lightly above the flexible tube internal diameter. Of course,
adjusting the tube upon the needle rear-part a sterile handling of
the device at the time the apparatus is to be used. Besides, the
needle, which is to be utilizable again, can be found damaged, and
with such dimensions when it is needed, that they do not correspond
exactly with those of the tube one wishes to employ.
More recently, the French Patent No. 2,073,688 offered a device
comprising a flexible tube, fitted with the inserting needle on the
waisted rear-part, without any threading or ribbing. This device
enjoys the advantage of presenting at the same time a tube and a
needle, which are quite well adjusted the one to the other, but
there is a risk for both components to separate when a powerful
traction is being exerted by the needle on the tube being held back
by the tissues. Finally, the cost price of such device seems quite
high for apparatus to be used but once.
This invention is intended to avoid the above disadvantages. For
this purpose, the invention proposes a drainage device, in which
the inserting needle is hollow at least at the end adjoining the
tube, this end being held by setting on the corresponding end of
the tube, inside which is a rigid filling part.
In this way, the needle is quite solidary with the corresponding
end of the tube owing to the setting of the one on the other, and
to the internal filling part, which avoids any possibility for the
tube to become deformed, or to slip.
In an advantageous achievement of the invention, the inserting
needle is made of a metallic tube, the end of which opposite the
other tubular part is point-like narrowed.
Preferably, the metallic tube to be used has a middle rigidness.
So, the practitioner can modify the form of the needle according to
the conditions of use. At his will, he has in hand a needle, which
is straight, slightly curved, or on the contrary very much curved,
or else comprising a straight part followed by a curve, etc. --
Then, this would not be possible with inserting needles, such as in
the present used draining devices, for those are made usually of a
rigid stainless steel wire, to which was given a well-defined
shape, the practitioner can not change.
Still, other particulars and advantages of the present device will
appear in the following specification of an example of achievement.
The specification is referring to the drawing being joined for
giving indications only, and in which:
Fig. 1 is a partial side view of a draining device according to the
invention;
Fig. 2 is a partial section view of the inserting needle with the
corresponding end of the tube;
Fig. 3 is a section view along line III--III of the FIG. 2;
The present device comprises essentially a flexible tube 1, which
is made preferably of plastic, such as PVC, polythen, or polyamid
resin. This tube is intended for working as the drain properly so
called. For this purpose, the tube includes, in a usual way, a
number of side holes, which are not seen in the drawing.
At one end, the tube bears a needle 2, intended to be inserted into
flesh. The needle is made of a metallic tube of middle rigidity, of
stainless steel, or aluminium alloy, such as Duralinox,
preferably.
The inside diameter of the needle must be equal or lightly larger
than the outer diameter of the other tube 1. If the making of a
device fitted with a standard tube of PVC with an inside diameter
of 1,5 mm, and an outer diameter of 3.0 mm is wished, so a
stainless steel tube with an inside diameter of about 3.05 to 3.20
mm, and a wall thickness between 0.10 and 0.30 mm according to the
intended rigidity is to be taken.
The tube 2 is secured on the corresponding end of the flexible tube
1 by a setting of the rear-end 3 of the one on the other by means
of a shrinking machine. For this purpose, the flexible tube is
being inserted into the metallic tube 2 over a length of about 10
to 20 mm, then the metallic tube is being set on the flexible tube,
so that the outer diameter of the first is reduced to 3 mm. Still,
a filling and straightening part 4 was placed before setting inside
the corresponding end of the tube 1, as it appears in the FIG.
2.
The result is quite an effective fixing of the corresponding needle
end on the flexible tube 1, and this result would not have been
obtained the filling part 4 having not been provided inside the
tube 1. As a matter of fact, without such a part 4, the
corresponding portion of the flexible tube 1 could have been
waisted but temporarily at the needle setting place, and an escape
and an untimely parting of the needle during its being used because
of a pull would not have been prevented.
Such a disadvantage is removed altogether by providing the filling
part 4, which ensures besides a tight jamming of the flexible tube
1 between the terminal edge 6 of the needle and this part 4.
In addition to the close solidarity between needle and flexible
tube thus obtained, this way of making a device gives the advantage
that the outer diameter of the whole apparatus is fairly constant
without any hindering outer projection. Indeed, the end of the
needle 2 comes and links up with the outer surface of the flexible
tube because of the setting of the tube on the tail portion 4b with
a decreasing diameter 4a of the inner part 4. Consequently, the
outer diameter of the needle end 3 decreases up to the terminal
edge 6, and the outer surface of the needle comes and is flush with
that of the tube, both surfaces linking up one with the other
perfectly.
Setting of the needle on the tube end can be effected in a few
seconds on a shrinking machine or a rotary swaging machine. This
machine can also be used for shaping the terminal point 7 of the
needle 2. As a matter of fact, the needle point can be made by
narrowing the corresponding end of the metallic tube, which the
needle is made of.
Moreover, this manufacturing method of a needle starting from a
metallic tube, the end of which is being narrowed for shaping the
point, gives the advantage of strengthening the point. Besides, the
rear-end 3 itself of the needle is strengthened with its setting on
the corresponding end of the flexible tube 1. Under such
conditions, the needle 2 can be manufactured from a metallic tube
of middle rigidity with no need of any rigid tube. This gives the
advantage that the needle shape can be altered according to
circumstances later on by the practitioner, who uses the needle.
So, a needle can be made of more or less soft materials, such as
aluminium or magnesium alloys, or stainless steels without any
thermal treatment (for example AISI 304).
Then, that was not possible for former drainage devices. In those
the needle was to be made of hard metal, because of the method
applied to render needle and flexible tube solidary the one with
the other by means of a cylindrical threaded or ribbed tail, the
diameter of which being always small, so that the joining place is
a weak spot compelling to make the needle of rigid stainless steel
wire. It is not possible to modify afterwards the shape of the
wire, and thus the practitioner is obliged to have a number of
needle types in his possession to be able of meeting with all using
circumstances. The inner strengthening filling part 4 can be either
solid, or hollow, according to its dimensions and composition; for
example, a tube of silicon rubber with an inner diameter of 4 mm,
can be strengthened with a little cylinder of PVC, with an outer
diameter of 4 mm, and a length of about 20 mm, the tube being
introduced in the needle over a length of 15 to 20 mm.
Nevertheless, the part 4 can also be made of semi-rigid plastic,
e.g. polythen, polyamid, PVC, or a metal such as aluminium.
In another achievement, the needle point can be manufactured by
inserting a solid point into the corresponding end of the tube 2,
and fixing the point in position by setting the tube end. This
point can be made of any suitable material, unlike eventually to
that of the tube 2, e.g. a metal, or an extra-hard plastic, such as
"Delrin," reinforced with glass fibers.
Instead of being made of a tube, the needle 2 can be eventually
provided from a solid metal rod, with a middle rigidity, the
rear-end 3 being then fitted with a recess in order to receive the
corresponding end of the flexible tube 1. Thus, for example, a rod
with a diameter of 4 mm can be machined easily on an automatic
lathe for providing a bore with a diameter of 3.10 mm, and a depth
of 10 to 20 mm, into which the end of a tube with a diameter of 3
mm can be introduced.
As mentioned above, the device according to the invention is
intended to be used every time when a flexible tube must be
inserted through an unnatural duct into the body of a human being,
or of an animal.
A particularly interesting application of the device consists in
insering surgical drains for post-operative vacuum-treatment of
sores.
Relating to this treatment, it is advisable to note that the needle
1 is intended for being inserted into flesh to allow the tube to be
introduced, but must be brought out again afterwards with the
adjoining end of the tube. Then, this tube end is to be cut in
order to loose the needle. The tube can be connected then with a
syringe, or with a perfusion device, when a liquid must be injected
into a human or an animal body. Nevertheless, the tube can be also
connected with a suction device for effecting any pre-operative or
post-operative drainage.
* * * * *