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BACKGROUND OF THE INVENTION
This invention relates to a surgical instrument assembly and apparatus.
This invention also related to an associated surgical method. More
particularly, this invention relates to a method, apparatus and instrument
for use in laparoscopic surgery.
In conventional laparascopic techniques, a small hollow needle with a
safety tip is first inserted through the abdominal wall of a patient. A
gas, usually carbon dioxide, is then injected through the needle to
pressurize the abdominal cavity and distend the abdominal wall. Surgical
instruments are typically introduced into the inflated abdominal cavity
through additional apertures formed in the abdominal wall.
Problems with this conventional pneumoperitoneum method include the need
for special pumps, pressure gauges and needles and the possibility of gas
seeping into the blood. In addition, the insufflation gas periodically
seeps out of the abdominal cavity, whereupon the abdominal wall falls and
interrupts the surgery.
OBJECTS OF THE INVENTION
An object of the present invention is to provide an improved method for use
in laparoscopic surgery.
Another object of the present invention is to provide associated apparatus
and instrumentation for performing the improved method.
Another, more particular, object of the present invention is to provide
such a method which would eliminate the need for special equipment.
A further particular object of the present invention is to provide such a
method which would prevent collapse of the abdominal wall and loss of
pneumoperitoneum.
A related object of the present invention is to provide a method which
would allow the use of regular surgical instruments in a patient's abdomen
during a laparoscopic procedure.
Yet another particular object of the present invention is to provide such a
method which would facilitate smoke evacuation from a distended abdomen
during a laparoscopic procedure.
SUMMARY OF THE INVENTION
A method for use in laparascopic surgery comprises, in accordance with the
present invention, the steps of (a) piercing an abdominal skin surface of
a patient to form a hole in the skin surface, (b) inserting through the
hole a tensile member, (c) lifting the abdominal wall of the patient away
from a backside of the patient by exerting tension on the tensile member,
and (d) drawing air into the abdominal cavity of the patient during the
step of lifting.
Preferably, an extra-abdominal channel is formed in the abdominal wall of
the patient. The hole defines one end of the channel. In that event, the
step of piercing includes the step of inserting a long needle-like
instrument through abdominal tissues in a direction substantially parallel
to the skin surface to form the channel.
Pursuant to another feature of the present invention, the tensile member is
a flexible member such as a tape. Alternatively, the tensile member may
take the form of a rigid member such as a tube which carries an expandable
member for engaging, in an opened configuration, an enlarged area of the
abdominal wall of the patient. The expandable member may include, for
example, an inflatable balloon member or a folding linkage. The expandable
member is insertable in a collapsed or closed configuration through the
hole formed in the patient's abdominal wall. Upon insertion into the
patient's abdominal cavity, the expandable member is expanded from the
closed configuration to the expanded or opened configuration, whereby a
substantially portion of the interior side of the abdominal wall may be
engaged and moved by exerting the tension on the rigid tensile member.
Pursuant to another feature of the present invention, the abdominal wall of
the patient is maintained in a predetermined elevation upon attainment of
the elevation during the step of lifting the patient's abdominal wall. The
elevation maintenance may be implemented by holding the tensile member in
a predetermined position. More particularly, the tensile member or an
extension may be tied to a support. Alternatively, a tensioning element,
such as a winch, to which the tensile element is connected may be locked.
An apparatus for use in laparoscopic surgery comprises, in accordance with
the present invention, a tensile member engageable with a portion of an
abdominal wall of a patient and means disposed outside of the patient and
connected to the tensile member for maintaining the tensile member in a
predetermined position, thereby maintaining a desired elevational of the
abdominal wall of the patient during a laparoscopic procedure.
The elevation maintenance component may include a support, the tensile
member being tied to the support. More specifically, the support may take
the form of a bar extending above the patient.
Alternatively or additionally, the tensile member may be tied to a winch
which in turn is mounted to the support.
An instrument for use in laparoscopic surgery comprises, in accordance with
the present invention, a tubular element insertable through an abdominal
wall of a patient and means expandable from a closed configuration to an
opened configuration for engaging, in the opened configuration, an
enlarged area of the abdominal wall of the patient.
The wall engaging component may include an inflatable balloon member or a
folding linkage.
A method in accordance with the present invention eliminates the need for
special equipment such as pumps and pressure gauges. This method also
prevents collapse of the abdominal wall. Regular surgical instruments may
be utilized in a patient's abdomen during a laparoscopic procedure
incorporating the instant invention. In addition, a laparoscopic method in
accordance with the present invention facilitates smoke evacuation from a
distended abdomen.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a schematic top view of a patient during an initial stage of a
laparoscopic procedure in accordance with the present invention.
FIG. 2 is a schematic cross-sectional view of the abdomen of the patient of
FIG. 1, taken along line II--II in that drawing figure.
FIG. 3 is schematic top view of a patient and apparatus in accordance with
the present invention during a later stage of a laparoscopic procedure in
accordance with the invention.
FIG. 4 is a schematic perspective view of a patient at an operative stage
similar to that shown in FIG. 3, illustrating a different apparatus in
accordance with the present invention.
FIG. 5 is a perspective view of an instrument for use in laparoscopic
surgery, in accordance with the present invention, showing the instrument
in a closed, pre-use or post use configuration.
FIG. 6 is a perspective view of the instrument of FIG. 5, depicting the
instrument in an opened use configuration.
FIG. 7 is a perspective view of another instrument for use in laparoscopic
surgery, in accordance with the present invention, showing the instrument
in a closed, pre-use or post use configuration.
FIG. 8 is a perspective view of the instrument of FIG. 7, depicting the
instrument in an opened use configuration.
FIG. 9 is a schematic longitudinal cross-sectional view of a patient during
an operative stage of a laparoscopic procedure utilizing a method in
accordance with the present invention.
DETAILED DESCRIPTION
As illustrated in FIGS. 1 and 2, a laparoscopic procedure is initiated by
piercing the abdominal skin of a patient P at one or more locations 12 and
14 to form holes at those locations. The piercing step is implemented with
one or more long, sturdy needles 16 and 18. As shown particularly in FIG.
2, needles 16 and 18 are inserted through abdominal tissues AT in a
direction substantially parallel to the skin surface SS to form
extra-abdominal channels 20 and 22 in the abdominal wall AW of the patient
P. Thus, the holes at piercing locations 12 and 14 define one end of the
respective channels 20 and 22.
Attached to proximal ends of needles 16 and 18 are respective tensile
members in the form of tapes or ribbons 24 and 26. Needles 16 and 18 are
pulled at their free ends until tapes traverse channels 20 and 22 from one
end to the other. Tapes 24 and 26 are then pulled upwardly at each end, as
indicated by arrows 28 and 30 in FIG. 2, so that abdominal wall AW is
lifted away from a back side BS of patient P.
During the lifting of abdominal wall AW by tapes 24 and 26, air is sucked
into abdominal cavity AC of patient P via an aperture 32 (FIG. 1) formed
in abdominal wall AW by a trocar (not illustrated).
As illustrated in FIG. 3, tapes 24 and 26 may be connected at their
opposite ends to respective pairs of winches 34, 36 and 38, 40 or other
mechanisms for placing the tapes in tension to facilitate the abdomen
lifting operation. Winches 34, 36 and 38, 40 are connected to supporting
structures, as schematically indicated at 42, 44 and 46, 48. Winches 34,
36 and 38, 40 may be provided with handles 50, 52 and 54, 56 for
facilitating a manual tensioning of tapes 24 and 26. Alternatively, the
tensioning may be accomplished automatically through electrical motors or
other mechanisms (not illustrated). In addition, winches 34, 36 and 38, 40
may be provided with locks (not shown) for maintaining tapes 24 and 26 at
predetermined positions and tensions, thereby maintaining a predetermine
elevation of abdominal wall AW with respect to back side BS.
Tapes 24 and 26 may, of course, be inserted intraabdominally instead of
extra-abdominally. In that event, the tapes engage an inner surface of
abdominal wall AW.
As depicted in FIG. 4, tapes 58 and 60 may be inserted in directions
longitudinally oriented with respect to patient P, rather than
transversely, as shown in FIGS. 1-3. The ends of tapes 58 and 60 are tied
to a pair of U-shaped bars 62 and 64 which extend in part transversely
over patient P. Of course, winches, levers, or any other tightening
mechanism may be used to connect tapes 58 and 60 to bars 62 and 64.
FIGS. 5 and 6 show an instrument 65 for use in performing an abdominal
lifting technique as described herein. The instrument includes a tube 66
provided at a distal end with an expandable ballon member 68. FIG. 5 shows
the ballon member 68 in a closed, pre-use or post-use configuration, while
FIG. 6 shows the ballon member in an expanded or opened use configuration.
At a proximal end, tube 66 is formed with an inlet 70 couplable with a
hose of a pressurized air supply (not shown), whereby balloon member 68
may be inflated from the closed configuration of FIG. 5 to the expanded
configuration of FIG. 6.
Upon insertion of the distal end of instrument 65 into a patient's
abdominal cavity through his or her abdominal wall, balloon member 68 is
inflated to form the expanded configuration of FIG. 6. In the expanded
configuration, balloon member 68 can engage a large area on the inside
surface of the patient's abdominal wall, thereby facilitating a lifting of
the wall from the back side of the patient. Tube 66 functions during a
lifting operation as a tensile member.
It is to be noted that balloon member 68 need not take the disk shape of
FIG. 6 but may instead have virtually any shape in its opened
configuration. Examples include a rectangle, a cross, a hemisphere, a
star, etc.
FIGS. 7 and 8 show another instrument 72 for use in performing an abdominal
lifting technique as described herein. The instrument includes a carrier
tube or bar 74. A pair of collars 76 and 78 are slidably mounted to tube
74 at a proximal end thereof. Attached to collars 76 and 78 are a
plurality of longitudinally extending fingers 80 connected at their distal
ends to hinged members 82. Hinged members 82 define an expandable member
84 shown in a closed, pre-use or post-use configuration in FIG. 7 and an
expanded or opened use configuration in FIG. 8. Upon insertion of the
distal end of instrument 72 into a patient's abdominal cavity through his
or her abdominal wall, collars 76 and 78, together with fingers 80 are
shifted in the distal direction so that expandable member 84 assumes its
expanded or opened configuration (FIG. 8). In that opened configuration,
expanded member 84 can engage a large area on the inside surface of the
patient's abdominal wall, thereby facilitating a lifting of the wall from
the back side of the patient. Tube 74 functions during a lifting operation
as a tensile member.
It is to be noted that the instrument 72 of FIGS. 7 and 8 may be modified
in numerous ways without departing from the spirit of the invention. For
example, fingers 80 and collars 76 and 78 may be replaced by a single
sleeve to which hinged members 82 are pivotably attached.
FIG. 9 illustrates the use of instruments 65 (or 72) to perform a
laparoscopic surgical procedure. A plurality of instruments 65a, 65b and
65c are inserted through an abdominal wall AW' of a patient P' and
balloons 68a, 68b and 68c are inflated to their fully opened or expanded
configurations. Tubes 66a, 66b, and 66c are then pulled upwardly (and
perhaps outwardly, as indicated by arrows 86 and 88. One or more tubes 66b
may be traversed by endoscopic or surgical instruments 90.
Although the invention has been described in terms of particular
embodiments and applications, one of ordinary skill in the art, in light
of this teaching, can generate additional embodiments and modifications
without departing from the spirit of or exceeding the scope of the claimed
invention. Accordingly, it is to be understood that the drawings and
descriptions herein are proferred by way of example to facilitate
comprehension of the invention and should not be construed to limit the
scope thereof.
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