Surgical needle abstract
A surgical needle (1) for implanting a tape (2) has a needle tip
(12) at the distal end (10) of the needle (1) and a shaft (14).
An insertion wing (20) with a distal (24) and a proximal (26) end
extends from the shaft (14). The insertion wing (20) widens from
its distal end (24) in proximal direction and has in the area of
its proximal end (26) an attachment device (32) for the tape (2)
to be implanted.
Surgical needle claims
What is claimed is:
1. A surgical needle device, comprising: a substantially round
shaft; a needle tip extending from a distal end of the shaft; an
attachment device extending from a proximal end of the shaft; an
insertion wing extending outwardly from the shaft and having a distal
end and a proximal end and widening in the proximal direction; and
a substantially flat tape to be implanted coupled to the attachment
device, the tape having a width greater than a diameter of the shaft,
wherein a width of the proximal end of the insertion wing is at
least 70% of the width of the tape.
2. The surgical needle device according to claim 1 wherein the
distal end of the insertion wing has a width substantially equal
to the diameter of the shaft.
3. The surgical needle device according to claim 1 wherein a cross-section
of the insertion wing at its proximal end is at least substantially
equal to a cross-section of the tape.
4. The surgical needle device according to claim 1 wherein the
width of the insertion wing at the proximal end is 90 percent to
110 percent of the width of the tape to be implanted.
5. The surgical needle device according to claim 1 wherein a thickness
of the insertion wing is less than the diameter of the shaft.
6. The surgical needle device according to claim 1 wherein the
insertion wing is formed as a double wing with first and second
halves, the first and second halves being arranged symmetrical to
the shaft.
7. The surgical needle device according to claim 1 wherein the
insertion wing and shaft are formed as an integral unit.
8. The surgical needle device according to claim 1 wherein the
needle is curved, and the insertion wing is adapted to the curvature
of the shaft.
9. A surgical needle assembly comprising: a needle having a proximal
end, a needle tip at a distal end, and a substantially round shaft
from which an insertion wing with a distal end and a proximal end
extends, the insertion wing widening in the proximal direction and
having a width at its distal end substantially equal to a diameter
of the shaft; and a substantially flat tape to be implanted having
a width greater than the diameter of the shaft; and wherein, in
the area of its proximal end, the width of the insertion wing is
at least 70% of the width of the tape, and wherein the needle further
comprises an attachment device in the area of its proximal end capable
of receiving the tape to couple the tape thereto.
10. Surgical needle according to claim 9 wherein in the area of
its proximal end, the width of the insertion wing is 90% to 110%
of the width of said tape.
11. Surgical needle according to claim 9 wherein, seen in its
proximal direction, the insertion wing reaches its greatest width
before it reaches its proximal end.
12. Surgical needle according to claim 9 wherein the distal end
of the insertion wing is located in the distal third of the shaft.
13. Surgical needle according to claim 9 wherein the proximal
end of the insertion wing extends beyond the shaft.
14. Surgical needle according to claim 9 wherein an edge of the
insertion wing facing the needle tip is formed as a cutting edge.
15. Surgical needle according to claim 9 wherein the attachment
device for the tape to be implanted has a slit, which is formed
in the area of the proximal end of the insertion wing.
16. Surgical needle according to claim 15 wherein the insertion
wing further comprises a double wall having first and second wall
halves in the area of its proximal end and the slit is formed between
the first and second wall halves.
17. Surgical needle according to claim 9 wherein the shaft and
the insertion wing are formed as an integral unit.
18. Surgical needle according to claim 9 wherein the needle is
curved, and the course of the insertion wing is adapted to the curvature
of the shaft.
Surgical needle description
The invention relates to a surgical needle for implanting a tape.
In order to insert a surgical implant in the form of a tape (band),
it is often necessary to guide the tape through tissue, e.g. near
to the point where it is to be anchored to the tissue. In a conventional
operating technique, a surgical needle matched to the size of the
tape with a needle tip at its distal end and a shaft is used for
this purpose. The tape is secured in the area of the proximal end
of the shaft with the help of a shrink-on tube, the tape rolling
up in its end area. When the needle is pushed through the tissue
at the desired point, an essentially round puncture channel forms
so that the following tape comes to lie against the tissue in its
rolled-up form. This is a disadvantage as a rule, as in a flat position,
the tape would be better anchored or could better fulfill a supporting
function.
The object of the invention is to provide a possibility to guide
the tape quickly and securely through tissue during the surgical
implanting of a tape, so that it is positioned in a largely flat
state.
This object is achieved by a surgical needle for implanting a tape
with the features of claim 1. Advantageous versions of the invention
result from the dependent claims.
The surgical needle according to the invention for implanting a
tape has a needle tip, which is located at the distal end of the
needle, and a shaft. An insertion wing with a distal and a proximal
end extends from the shaft. The insertion wing widens from its distal
end in proximal direction and, in the area of its proximal end,
it has an attachment device for the tape to be implanted. Preferably
the tape to be implanted is secured to the attachment device upon
supply of the surgical needle.
When the surgical needle according to the invention is guided through
tissue, the insertion wing widening in proximal direction gradually
creates, in a tissue-friendly manner, a channel which can be largely
matched to the cross-section of the tape depending on the dimensions
of the insertion wing and the tape. In other words, with a flat
tape the insertion wing is preferably not or not much thicker than
the tape, and also the attachment device preferably has no parts
significantly projecting vis-a-vis the cross-section of the tape.
The surgical needle according to the invention ensures that the
tape penetrates the tissue in a largely flat form and thus rolls
up only slightly or not all. A largely optimal positioning of the
tape is thus guaranteed. This means that the surgeon can work quickly
and safely.
In a preferred version of the invention, the insertion wing is
formed as a double wing with two halves, both halves preferably
being arranged symmetrical to the shaft. Versions with a single
insertion wing are also conceivable.
The width of the insertion wing at its distal end preferably corresponds
to the width of the shaft. The width of the insertion wing in the
area of its proximal end is preferably at least 70% of the width
of the tape to be implanted and can be, e.g., 90% to 110% of the
width of the tape to be implanted. In this version, the insertion
wing starts at its distal end without abrupt transition at the shaft
of the needle and increases its width in proximal direction to a
size which largely corresponds to the width of the tape to be implanted.
Thus, when the surgical needle is guided through tissue, the insertion
wing can create the channel required for the tape in a particularly
tissue-friendly manner and with a width which is sufficiently large
for the tape but which does not put an unnecessary strain on the
tissue.
Seen in proximal direction, the insertion wing can already reach
its greatest width before reaching its proximal end. For example,
its outer edge can run parallel to the shaft after reaching the
greatest width. However, versions are also conceivable in which
the insertion wing tapers again as it advances further in proximal
direction.
In a preferred version, the distal end of the insertion wing is
located in the distal third of the shaft, i.e. in the front third
of the shaft adjoining the needle tip. The insertion wing can however
also start further back, i.e. more towards the proximal end of the
needle. This can be advantageous, e.g., if a thicker layer of tissue
first needs to be completely pierced with the needle tip and the
distal area of the shaft, before the insertion wing is pulled through
the tissue with the help of the distal area of the needle.
The edge of the insertion wing facing the needle tip can be formed
as a cutting edge. In this case, it is particularly easy to guide
the surgical needle including the insertion wing through tissue.
Versions are conceivable in which the area of the proximal end
of the insertion wing extends beyond the shaft. Depending on the
version of the attachment device, this can have advantages, e.g.
if the proximal end area of the shaft would otherwise disturb the
geometry of the attachment device.
In a preferred version of the surgical needle according to the
invention, the attachment device has a slit for the tape to be implanted,
formed in the area of the proximal end of the insertion wing. The
insertion wing is preferably designed with a double wall in the
area of its proximal end, and the slit is formed between the two
wall halves. In this case, the slit extends essentially parallel
to the proximal area of the insertion wing and the two wall halves
form a kind of plates between which the end of the tape can be secured.
The tape can, e.g., be clamped, glued or sealed in the slit. Other
versions of the attachment device are also conceivable; e.g. the
tape can be clamped, as in a cable terminal.
There are various possibilities for connecting the insertion wing
or the individual parts of the insertion wing to the shaft during
the manufacture of the surgical needle. The insertion wing can,
e.g., be welded to the shaft. The shaft and the insertion wing can
also be formed as a unit, e.g. in one piece or so that the shaft
is not an independent component with respect to the insertion wing
in the area of the insertion wing.
The surgical needle can be straight or curved. If the needle is
curved, then the course of the insertion wing is preferably adapted
to the curvature of the shaft.
The surgical needle according to the invention can be adapted to
numerous surgical possibilities through the choice of its basic
shape, its dimensions and the form of the insertion wing, also in
adaption to the tape to be implanted.
In the following, the invention is explained in more detail with
reference to an embodiment. The diagrams show in
FIG. 1 a perspective view of a surgical needle according to the
invention with a tape secured to it;
FIG. 2 a top view of the surgical needle from FIG. 1
FIG. 3 a side view of the surgical needle from FIG. 1 and
FIG. 4 an enlarged section from FIG. 3.
A version of a surgical needle 1 for implanting a tape 2 is shown
in FIGS. 1 to 4. The tape 2 is secured to the surgical needle 1.
The surgical needle 1 has a distal end 10 where the needle tip
12 is located, and a shaft 14 whose proximal end is numbered 16.
An insertion wing 20 which is formed as a double wing with two
halves 22 and 23 extends from the shaft 14. The insertion wing
20 extends from a distal end 24 which is located not far from the
needle tip 12 in the embodiment, to a proximal end 26 which is
located beyond the proximal end 16 of the shaft 14. The two halves
22 23 of the insertion wing 20 gradually widen in the zone between
the distal end 24 of the insertion wing 20 and a position 28 from
the width of the shaft 14 (which has a circular cross-section in
the embodiment) up to the width of the tape 2. In this zone the
edges 30 of the halves 22 23 of the insertion wing 20 facing the
needle tip 12 can be designed as a cutting edge. The insertion wing
20 maintains its width between the points 28 and the proximal end
26. The insertion wing 20 is designed flat, i.e. it is not significantly
thicker than the tape 2 in the embodiment. The course of the insertion
wing 20 is adapted to the curvature of the shaft 14 of the surgical
needle 1 which is curved in the embodiment.
In the area of its proximal end 26 the insertion wing 20 has an
attachment device 32 as can best be seen in the side view according
to FIG. 3 and the enlarged section in FIG. 4. In the embodiment,
the attachment device 32 has a slit 34 which is formed in the proximal
area of the two halves 22 23 of the insertion wing 20. In other
words, in this area the insertion wing 20 is designed with a double
wall with two wall halves 36 and 37 which are drawn in bold lines
in FIG. 4 and the slit 34 is located between these wall halves
36 and 37.
The end zone 38 of the tape 2 is inserted into the slit 34. As,
in the embodiment, the thickness of the insertion wing 20 and thus
the distance between the outsides of the two wall halves 36 and
37 is only slightly greater than the thickness of the tape 2 the
tape 2 is compressed in its end zone 38 inside the slit 34 and,
in a transition area 40 outside the slit 34 assumes its thickness
when in a free state, see FIG. 4.
In the embodiment, the tape 2 is secured to the surgical needle
1 the procedure being that the slit 34 which extends over the
entire width of the insertion wing 20 is bent open somewhat, then
the end zone 38 of the tape 2 is inserted together with adhesive
and finally the slit 34 i.e. the proximal area of the insertion
wing 20 and of the shaft 14 is compressed. The tape 2 is then securely
connected to the surgical needle 1. |