JP2008011868A - Medical suction forceps - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a medical suction forceps capable of sucking and holding the peritoneal membrane only without injuring organs under the peritoneal membrane in the celiotomy, or used in a small-visual-field operation such as the operation under a laparoscope, without dropping the sucked and held object. <P>SOLUTION: The medical suction forceps has an inner lumen penetrating from the distal end to the proximal end, and have partitions in an opening at the distal end for dividing the opening into a number of cells. The proximal end of the forceps can be detachably connected to a suction device. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a medical suction forceps. In particular, the present invention relates to a medical suction forceps that can suck and grasp only the peritoneum so as not to damage an organ under the peritoneum in a laparotomy of a patient, or is used in a small-field operation such as a laparoscope. About.

The forceps currently used in laparoscopes and laparoscopic surgery are metallic, and have been grasped by pinching forceps (hereinafter referred to as pinching forceps).
However, according to the technology up to now, it is difficult to grasp spherical organs and tumors having no pinching points, and the organs that should be preserved are destroyed or pinched by pinching for the purpose of grasping. I often bleed.

  In laparotomy, the abdominal wall is first cut open, and then the peritoneum is cut open. Conventionally, when the peritoneum is cut open, only the peritoneum is grasped with a pinch-type forceps and the peritoneum is pulled up so as not to damage an organ or the like under the peritoneum. However, with this pinch-type forceps, not only the peritoneum but also the subperitoneal organ is often picked up, which may damage the subperitoneal organ.

Under such circumstances, Patent Document 1 discloses that tissue, mucous membranes, blood vessels, etc. can be peeled off satisfactorily and safely, and suction without clogging such as exudate is possible. The objective is to reduce habits, reduce the visual burden on the operator's operations, and make it easy to search by X-ray even if it falls into the abdominal cavity or chest cavity. An endoscopic surgical forceps is disclosed. This forceps is made of a flexible material and is configured by attaching a cap having one or more suction holes on the surface of a sphere to the tip of a straw-shaped suction forceps.
JP-A-2005-137944

Patent Document 2 discloses a suction-type grasping forceps that is intended to reduce the risk of bleeding, damage to an organ, and perform surgery by grasping and supporting an organ and a tumor without pinching them. . This suction-type grasping forceps includes a hemispherical or trumpet-shaped grasping portion made of a soft material, and sucks and grasps a target organ or the like by applying a negative pressure to the inside of the grasping portion by suction.
JP-A-2005-253906

According to the study of the present inventor, in the conventional suction type forceps, air leaks from the gap between the target object and the forceps suction port, the negative pressure cannot be maintained, and the target object held by suction is often removed. It was. In addition, if the suction force of the suction device connected to the suction forceps is increased too much, tissue such as the peritoneum is drawn from the distal end of the suction forceps to the back of the lumen, and the organs under the peritoneum It was inhaled together and sometimes damaged organs.
An object of the present invention is to suck and grasp only the peritoneum so as not to damage an organ under the peritoneum in a laparotomy of a patient, or to be used in a small-field operation such as a laparoscope An object of the present invention is to provide a medical suction forceps that does not remove a target object.

  As a result of studies to solve the above problems, the present inventor has found that the problem can be solved by providing a partition for dividing a plurality of cells in the suction port of the straw-shaped suction forceps. Based on this, the present invention was completed through further studies.

That is, the present invention is as follows.
(1) It has a lumen communicating from the distal end to the proximal end, a partition for dividing the opening into a plurality of cells is provided in the opening of the distal end, and the proximal end is A medical forceps that can be detachably connected to a suction device.
(2) The medical suction forceps according to (1), wherein the partition is arranged at an angle with respect to the axial direction, and the gas is sucked in a vortex.
(3) The medical suction forceps according to (1) or (2), wherein the axial length of the partition is 1 to 20 mm.
(4) A side hole is provided between the distal end and the proximal end, and before the object is gripped, the gas sucked into the lumen from the distal end is discharged from the side hole to grip the object. After that, the medical suction forceps according to any one of (1) to (3), wherein the gas is sucked into the lumen from the side hole.
(5) The medical suction forceps according to any one of claims 1 to 3, wherein an outer diameter of the distal end extends in a trumpet shape.

  In the medical suction-type forceps of the present invention, a partition for dividing the opening into a large number of cells is provided at the opening (intake port) at the distal end. In a state where an object such as an organ or peritoneum is sucked into the distal end opening, the edge of the distal end opening and the edge of the partition are in contact with the object without any gap. As a result, the inside of each cell partitioned by the partition is kept at a negative pressure, and the object is gripped.

  The angle between the forceps and the object may change, and a part of the edge of the distal end opening of the forceps may be separated from the object, resulting in a gap. In the conventional suction-type forceps, when a part of the edge of the distal end opening part is separated from the target object and a gap is formed, the negative pressure is not maintained, and the gripping force of the target object by the forceps decreases rapidly, and the target object Will come off the forceps. On the other hand, in the medical suction-type forceps of the present invention, even if a part of the edge of the distal end opening is separated from the object, the edge of the partition is still in contact with the object, and the negative pressure of each cell Is still maintained and the gripping force does not drop rapidly.

  As a result, with the medical suction forceps of the present invention, only the peritoneum can be sucked and grasped so as not to damage the subperitoneal organ in the laparotomy of the patient, or a small-field operation such as laparoscopic It is almost impossible to remove the object that has been sucked and grasped, and the risk of surgery due to laparoscope and small laparotomy is reduced, and surgery can be performed easily.

Exemplary embodiments of a medical suction-type forceps according to the present invention will be described below in detail with reference to the drawings.
FIG. 1 is a view showing an example of a medical suction-type forceps 1 according to the present invention. The medical suction forceps 1 includes a tube 2 having a lumen communicating from the distal end to the proximal end, and a grip portion 4 having a thick outer diameter is provided on the proximal end side so that the forceps can be easily grasped by hand. Is provided around the tube 2. The proximal end has a structure for connecting to a tube 5 communicating with a suction device such as a negative pressure device or a pump.
The outer diameter of the tube 2 is arbitrary, generally 2 to 30 mm. The length of the tube may be any length that is easy to use in surgery or the like.

The distal end 3 of the tube 2 is provided with a partition for dividing the opening into a large number of cells at the opening (inlet) at the distal end.
FIG. 3 is a diagram illustrating an example of the structure of the distal end 23. In FIG. 3, a part of the tube 22 is broken to show the internal structure of the tube. A partition 26 made of a thin plate having a length of about 1 to 20 mm is provided at the distal end in parallel with the tube axis direction, and is partitioned into a plurality of sector cells in FIG. 3 by the partition. Gas is drawn into the tube 22 through each cell.

  FIG. 2 is a diagram illustrating an example of the structure of another distal end 13. In FIG. 2, a part of the pipe 12 is broken to show the internal structure of the pipe. The distal end is provided with a partition 16 made of a thin plate having a length of about 5 to 20 mm at an angle with respect to the tube axis direction, and is partitioned into a plurality of sector cells in FIG. The gas is sucked into the tube 12 while swirling through the cells delimited by partitions arranged at an angle. In order to guide the vortex flow, a fin-like thin plate (not shown) that is twisted in the direction of the tube axis and parallel to the vortex flow direction is erected on the inner peripheral surface of the tube 12. May be.

  The shape of the cells divided by the partition is not limited to those shown in FIGS. 2 and 3, and may be, for example, a honeycomb shape or a lattice shape. The size of the cell is not particularly limited, but the fat mass is not aspirated to reduce the risk that the fat mass will be sucked into the tube, causing clogging or sudden pressure fluctuations and damaging the suction device A magnitude of about is preferred.

A side hole may be provided between the distal and proximal ends of the tube. Before grasping the object, the gas sucked into the lumen from the distal end is discharged from the side hole, and can serve as a booster function for increasing the speed of inspiration.
After grasping the object, gas is sucked from the side hole into the lumen. As a result, sudden changes in pressure are buffered and damage to the suction device can be prevented.

  The outer diameter of the distal end of the tube may extend in a trumpet shape. The partition may have a flat distal end shape as shown in FIGS. 2 and 3 or may be recessed in a bowl shape.

  The material which comprises a pipe | tube and a partition is not specifically limited. For example, a flexible resin such as polyamide resin, vinyl chloride resin, polyurethane resin, polyethylene resin, polypropylene resin, silicone rubber or elastomer; metal such as stainless steel or aluminum is used. In the case of forming with resin, X-ray-opaque materials such as bismuth oxide, basic bismuth, and barium sulfide can be blended with the resin in order to enable searching with X-rays. The color of the medical suction forceps is preferably a color that absorbs light, such as gray, black, brown, blue, and dark green. Gray and black are more desirable from the viewpoint of cost.

  FIG. 4 is a diagram showing a usage example of the medical suction forceps of the present invention. In the laparotomy, first, the skin layer 33 is incised, and then the muscle layer 34 is incised. Further, the peritoneum 35 under the muscle layer 34 is incised. When incising the peritoneum, in order to separate the peritoneum from organs such as stomach, intestines, and kidneys under the peritoneum, the medical suction forceps 31 of the present invention is used. The peritoneum 35 is lifted. The lifted peritoneum is incised with a scalpel 37 and opened.

By using the medical suction-type forceps of the present invention, only the peritoneum can be lifted and the peritoneum can be incised without damaging the organ. In the medical suction type forceps of the present invention, even if some cells at the distal end are separated from the peritoneum and the negative pressure is not maintained, the negative pressure in the remaining cells is maintained and the force to grip the peritoneum is maintained. Since it does not decrease, the peritoneum can be kept gripped and a laparotomy can be performed quickly.
Even if the suction force of the suction device is increased too much, the partition provided at the distal end prevents the peritoneum and the like from being drawn into the interior of the lumen, and the organ and the like are not sucked together with the peritoneum.

  The medical suction forceps of the present invention can function as a tube for aspirating exudate or the like in the abdominal cavity, and conversely as a tube for flowing physiological saline or the like into the abdominal cavity.

It is a figure which shows an example of the medical suction type forceps 1 of this invention. FIG. 4 is a diagram illustrating an example of a structure of a distal end 13. FIG. 4 is a diagram showing an example of a structure of a distal end 23. It is a figure which shows the usage example of the medical suction-type forceps of this invention.

Explanation of symbols

1, 31: Medical suction forceps;
2, 12, 22: tube (main body);
3, 13, 23: distal end;
4: Grip part;
5: Tube;
16, 26: partition;

Claims (5)

  A lumen that communicates from the distal end to the proximal end, and a partition for dividing the opening into a plurality of cells is provided in the opening at the distal end; Medical suction forceps that can be detachably connected.   The medical suction forceps according to claim 1, wherein the partition is disposed at an angle with respect to the axial direction, and the gas is sucked in a spiral manner.   The medical suction forceps according to claim 1 or 2, wherein an axial length of the partition is 1 to 20 mm.   A side hole is provided between the distal end and the proximal end. Before grasping the object, the gas sucked into the lumen from the distal end is discharged from the side hole, and after grasping the object, The medical suction forceps according to any one of claims 1 to 3, wherein gas is sucked from the side hole into the lumen. The medical suction-type forceps according to any one of claims 1 to 3, wherein an outer diameter of the distal end extends in a trumpet shape.

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