JPH04309340A - Organ enucleation disposer - Google Patents

Abstract

PURPOSE:To provide the organ enucleation disposer which can surely and easily enucleate the organs without damaging the tissue of the organs even when the organ enucleation is executed by the narrow punctured part of the abdomen. CONSTITUTION:The organ enucleation disposer 1 has an insertion holding member 2 which is slender and flexible, and a shape memory plastic (hereafter abbreviated as SMP) bag 4 which is provided by being fixed to the front end of this insertion holding member 2, is made of the SMP to be shrunk and deformed in a previously stored diametral direction by heating and houses the enculeated organs.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organ extraction treatment instrument that accommodates an organ to be removed.

0002

BACKGROUND OF THE INVENTION The most common and reliable treatment for cholelithiasis is to perform cholecystectomy through an incision in the upper abdomen.

However, in recent years, less invasive treatments such as lithotripsy therapy and drug-based gallstone dissolution therapy have been attempted for cholelithiasis. However, at present, these treatments, which aim to eliminate only gallstones without removing the gallbladder, have limited applicability due to the cost of medical equipment, medical expenses, effectiveness rate, recurrence rate, etc. Cholecystectomy is considered the most preferable treatment for this condition.

[0004]Recently, there have been reports of laparoscopic cholecystectomy performed on patients with cholelithiasis in the United States; Compared to excision surgery, it is less invasive and can be performed even on high-risk patients; post-operative recovery is faster; hospital stay is significantly shorter, reducing medical costs; and the abdominal wall puncture area is smaller. It has advantages such as fewer cosmetic defects.

[0005]

[Problems to be Solved by the Invention] However, in this laparoscopic cholecystectomy, the cholecystectomy is performed through a narrow puncture site in the abdominal wall, so there is a possibility that the tissue wall of the gallbladder may be damaged during removal. This tissue wall damage may cause gallbladder to leak into the body cavity.

The present invention has been made in view of the above-mentioned circumstances.
Even when the organ is removed through a narrow abdominal wall puncture,
It is an object of the present invention to provide an organ extraction treatment tool that can reliably and easily extract the organ without damaging the tissue wall of the organ.

[0007]

[Means for Solving the Problems] The organ extraction treatment instrument of the present invention includes an elongated and flexible insertion/holding member, and is held at the distal end of the insertion/holding member to accommodate an organ to be extracted through an opening. The organ accommodating member is made of a shape memory material that has an accommodating portion and whose outer wall shrinks and deforms when heated.

[0008]

[Function] The organ to be extracted is accommodated in the accommodating part through the opening of the organ accommodating member made of a shape memory material, and the outer wall of the organ accommodating member is contracted and deformed by heating the organ accommodating member.

[0009]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIGS. 1 to 5 relate to a first embodiment of the present invention, with FIG. 1 being a perspective view showing the configuration of an organ extraction treatment tool, and FIG. 2 explaining the insertion of the organ extraction treatment tool into a body cavity. FIG. 3 is an explanatory diagram illustrating the storage of the extracted organ in the SMP bag. FIG. 4 is an explanatory diagram illustrating the state of the organ extraction treatment tool inside the body cavity due to contraction and deformation. FIG. 5 is an explanatory diagram illustrating the contraction of the SMP bag. It is an explanatory view showing an example of the process of deformation.

As shown in FIG. 1, the organ extraction treatment instrument 1 of the first implementation order includes an elongated and flexible insertion/holding member 2 and a distal end portion of the insertion/holding member 2 that is fixedly attached thereto. It includes an organ housing member, for example, an SMP bag 4 made of shape memory resin (hereinafter abbreviated as SMP) that deforms into a pre-memorized shape to be described later by heating.

Next, the operation of the organ extraction treatment instrument 1 constructed as described above will be explained.

As shown in FIG. 2, in order to remove an organ 7 that has been separated by laparoscopic organ removal (not shown), the organ removal treatment instrument 1 is equipped with a trocar 5 that is punctured into a body wall 6. Insert the inside. Here, when the organ extraction treatment instrument 1 is inserted into the trocar 5, the SMP bag 4 is folded.

Next, as shown in FIG.
By pushing in, at least a portion of the SMP bag 4 is positioned within the body cavity, and the opening of the SMP bag 4 on the distal end side of the insertion holding member 2 is opened using a treatment instrument (not shown) or the like.
The organ 7 separated by organ extraction is housed in the SMP bag 4.

With the organ 7 accommodated in the SMP bag 4 in this manner, for example, by feeding sterilized hot water (not shown) into the trocar 5 and heating the SMP bag 4, as shown in FIG.
As shown in , the SMP bag 4 is contracted in the radial direction. still,
Due to this contraction and deformation, the maximum outer diameter of the SMP bag 4 becomes smaller than, for example, the inner diameter of the trocar 5. Therefore, by pulling out the insertion holding member 2, the organ 7 can be inserted into the SMP bag 4 without damaging the outer tissue wall of the organ 7.
It can be extracted outside the body cavity while being housed inside the body.

Here, the shrinkage deformation of the SMP bag 4 causes the SMP
If the diameter of the entire bag 4 is reduced uniformly, for example, if the organ 7 housed in the SMP bag 4 is enlarged in the center, the diameter reduction ratio of the SMP bag 4 cannot be made too large. ,
As a result, there is a possibility that the desired shrinkage diameter cannot be obtained.

[0017] Therefore, the organ 7 housed in the SMP bag 4
When the SMP bag 4 expands in the center, the process of contraction and deformation of the SMP bag 4 is as shown in FIG. That is,
It starts from the state before heating as shown in FIG. 5(A), and when heating starts, the SMP bag 4 starts to contract in the radial direction from the outer wall of the central part, as shown in FIG. 5(B), and finally, Figure 5
As shown in (C), the entire SMP bag 4 contracts in the radial direction. By deforming in this way, the diameter of the organ 7 accommodated in the SMP bag 4 can be efficiently reduced.

[0018] This shrinkage process is not limited to the above-mentioned process,
Any process that can efficiently reduce the diameter of an organ accommodated in the SMP bag may be used.

Further, although the heating means for the SMP bag 4 was performed using hot water, the present invention is not limited to this. For example, means for blowing heated inert gas or the like may also be used.

Further, although the SMP bag 4 is fixedly provided at the tip of the insertion and holding member 2, the present invention is not limited to this, and the SMP bag 4 may be provided at the tip of the insertion and holding member 2 in a detachable manner.

Further, although the opening of the SMP bag 4 is simply opened, the present invention is not limited to this. The edge of the opening of the SMP bag 4 may be formed into a ring shape, and the inside of this ring may be inserted into the holding member. The opening of the SMP bag 4 may be tightened by inserting a string or the like (not shown) disposed along the SMP bag 2 and pulling the string.

FIG. 6 is a perspective view showing the structure of an organ extraction treatment instrument according to the second embodiment.

The organ extraction treatment instrument of the second embodiment is shown in FIG.
), the organ accommodating member is, for example, a bottomed cylindrical SMP net 8 made of SMP. This S
By heating the MP net 8 with a heating means to be described later, the SMP net 8 contracts in the radial direction as shown in FIG. (see 2). Note that the heating means is hot water or hot air, as in the first embodiment.

[0024] Although the net is formed by SMP, it is not limited to this, and may be formed from, for example, a shape memory alloy with an insulated outer skin. In addition to hot water or hot air, heating can also be performed by energization.

Other configurations, functions, and effects are the same as in the first embodiment.

FIG. 7 is a perspective view showing the structure of an organ extraction treatment instrument according to the third embodiment.

The organ extraction treatment instrument of the third embodiment is shown in FIG.
), the organ accommodating member is, for example, a bottomed cylindrical SMP sheet 9 in which a sheet formed by SMP is spirally wound and one end is made bottomed. This SMP sheet 9
By heating with a heating means to be described later, as shown in FIG. 7(B)
As shown in , this SMP sheet 9 contracts in the radial direction,
For example, the maximum outer diameter of the SMP sheet 9 is determined by the trocar 5 (
(see Figure 2). Note that the heating means is hot water or hot air, as in the first embodiment.

Other configurations, functions, and effects are the same as in the first embodiment.

[0029]

As explained above, according to the present invention, the organ extraction treatment instrument of the present invention accommodates the organ to be extracted in the accommodating part through the opening of the organ accommodating member formed of a shape memory material, By heating the organ-receiving member, the outer wall of the organ-receiving member can be contracted and deformed, so that in laparoscopic organ removal, such as the gallbladder, the organ can be removed from the punctured part of the abdominal wall. Even if the organ is removed, the organ can be reliably and easily removed without damaging the tissue wall of the organ.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing the configuration of an organ extraction treatment instrument according to a first embodiment.

FIG. 2 is an explanatory diagram illustrating insertion of the organ extraction treatment instrument according to the first embodiment into a body cavity.

FIG. 3 is an explanatory diagram illustrating storage of the extracted organ in the SMP bag according to the first embodiment.

FIG. 4 is an explanatory diagram illustrating the state of the organ extraction treatment instrument within the body cavity due to contraction and deformation according to the first embodiment.

FIG. 5 is an explanatory diagram showing an example of the process of contraction and deformation of the SMP bag according to the first embodiment.

FIG. 6 is a perspective view showing the configuration of an organ extraction treatment instrument according to a second embodiment.

FIG. 7 is a perspective view showing the configuration of an organ extraction treatment instrument according to a third embodiment.

[Explanation of symbols]

1... Organ extraction treatment tool 2...Insertion holding member 4...SMP bag 5...Trocal 7...organs

Claims (1)

[Claims] Claim 1: A slender and flexible insertion/holding member; a housing portion held at the distal end of the insertion/holding member for accommodating an organ to be removed from the opening; the outer wall is contracted by heating; 1. An organ extraction treatment instrument comprising: an organ accommodating member made of a deformable shape memory material.