JP2004180856A - Transanal large intestine retractor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transanal large intestine retractor facilitating an operation by safely grasping, pushing and pulling an intestine near an operation part and securing the view of an operating doctor. <P>SOLUTION: This transanal large intestine retractor 1 comprises: a tube means 2 to be inserted in the large intestine via the anus; a balloon means 3 provided in the large intestine inner end part of the tube means and comprising a balloon support body 4 airtightly connected to the large intestine inner end part of the tube means 2 and having a longitudinal hole 4a communicated with a lumen of the tube means 2, a lateral hole 4b communicated radially from the longitudinal hole 4a and opened in the outer surface of the balloon support body 4, and an expansion balloon element 5 hermetically connected to the balloon support body 4 surrounding the lateral hole 4b; a joint means 7 provided in the anus outer end part of the tube means 2; and a pump means 9 connected to the joint means 7 and inflating or contracting the balloon element 5 by feeding or exhausting the air to/from the balloon element 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a retractor for grasping a large intestine for laparoscopic colon surgery.
[0002]
[Prior art]
In the case of such conventional laparoscopic colorectal surgery, a trocar (port) inserted into the abdomen is used to grasp and pray at the surgical site, for example, the intestinal tract near the tumor, by using intestinal forceps and various striatal retractors. In this case, the surgeon was towed to widen the surgical site, secure the physician's view, and facilitated the operation.
[0003]
[Problems to be solved by the invention]
However, as in the past, when grasping the intestinal tract with forceps inserted into the abdomen through a trocar, the surgical site, for example, directly grasping the tumor, damaging the intestinal tract, or in the case of surgery for lesions such as cancer There was a risk of spreading the cancer.
[0004]
Furthermore, in the case of forceps inserted into the abdomen via a trocar, it is not possible to secure a sufficient field of view simply by holding the forceps of an assistant, and there is a problem that the surgeon's own forceps obstructs the field of view.
[0005]
Therefore, an object of the present invention is to directly grasp a tumor, damage an intestinal tract, and, in the case of surgery on a lesion such as cancer, there is no risk of spreading the cancer, and safely operate a surgical site, for example, An object of the present invention is to obtain a transanal colon retractor capable of securing the visual field of a surgeon by grasping, admiring, and towing the intestinal tract near a tumor to secure a physician's view and to facilitate the operation.
[0006]
[Means for Solving the Problems]
To this end, the transanal colon retractor of the present invention comprises:
Tube means for transanal insertion into the large intestine;
A balloon support provided at the inner end of the large intestine of the tube means, the balloon support having a longitudinal hole connected to the inner end of the large intestine of the tube means in an airtight manner and communicating with the lumen of the tube means; A balloon comprising: a lateral hole means communicating radially from a longitudinal hole and opening to the outer surface of the balloon support; and a telescopic balloon element hermetically connected to the balloon support so as to surround the lateral hole means. Means,
Joint means provided at the outer anal end of the tube means,
Pump means connected to the joint means, and supplying or discharging air to the balloon element through the joint means, the tube means, and the balloon support to inflate or contract the balloon element. .
[0007]
According to the present invention, the tube means is inserted into the anus from the balloon side end in a state where the balloon element is deflated to a surgical site, for example, near the vicinity of the tumor, and thereafter the tube means is operated by operating the pump means. Air is pumped into the interior of the balloon element from the lumen of the balloon support, the longitudinal holes and the lateral holes of the balloon support, and the balloon element is inflated. Thereby, the balloon element comes into close contact with the intestinal tract. As a result, the intestinal tract can be grasped, worshiped, and towed so as to widen the field of view of the operation site and facilitate the operation.
[0008]
After the operation, the air inside the balloon element is evacuated by operating the pump means, the balloon element is contracted to release the close contact with the intestinal tract, and the entire tube means is extracted from the intestinal tract and the anus.
[0009]
In a preferred embodiment of the present invention, the pump means is provided with a hose means having a smaller diameter than the tube means, and at one end of the hose means, and a quick connection means which can be detachably and quickly connected to the joint means. And a hollow egg-shaped manually pressed rubber sphere provided at the other end of the hose means and having a check valve and a freely openable and closable vent.
[0010]
Further, in a preferred embodiment of the present invention, a gripping means, preferably a rubber grip having a non-slip notch, is provided at the joint side end of the tube means.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, a preferred embodiment of the present invention will be described with reference to the drawings.
[0012]
As shown in FIG. 1, the transanal colon retractor 1 of the present invention has a tube means 2 for transanally inserted into the large intestine. In the embodiment of FIG. 1, the tube means 2 has a sealing screw connection configuration of O-rings of the distal tube portion 2a and the proximal tube portion 2b. However, it can be constituted by an integral tube, or can be constituted by two or more parts. The tube means 2 is preferably made of a rigid metal or synthetic resin, and preferably has a distal end curved as shown in the figure so as to be easily inserted from the anus.
[0013]
A balloon means 3 is provided at the inner end of the large intestine of the distal tube portion 2a. In the illustrated embodiment, the balloon means 3 is, as shown in FIG. 2, connected to the inner end of the large intestine of the distal tube portion 2a in an airtight screw connection, and has a longitudinal hole communicating with the lumen of the tube means 2. A balloon support 4 having a longitudinal support 4a, a lateral hole 4b communicating radially from the longitudinal hole 4a and opening to the outer surface of the balloon support 4, and a telescopically sealed connection to the balloon support 4 so as to surround the lateral hole 4b. It is composed of a free balloon element 5. At least one, preferably four, lateral holes 4b are provided.
[0014]
The balloon support 4 is substantially cylindrical and the balloon support 4 is surrounded by a balloon element 5. In the illustrated embodiment, a bolt 6 (see FIG. 2) penetrating two hollow bulb-shaped balloon supports 4 through a central longitudinal hole, a spherical bolt head 6a on the distal side, and a distal tube Together with the nut 6b on the side connected to the part 2a, it seals the open edge of the balloon element 5. At the apex of the hollow bulb-shaped balloon element 5, a small hole (not shown) through which a bolt passes is provided.
[0015]
A coupling means 7 is provided at the outer anal end of the tube means, in the illustrated embodiment, at the outer anal end of the proximal tube portion 2b. Further, a rubber grip 8 provided with a non-slip, for example, a notch is provided at an end of the proximal tube portion 2b.
[0016]
Connected to this joint means 7 is a pump means 9 for inflating or deflating the balloon element 5 by supplying or discharging air to the balloon element 5 via the joint means 7, the tube means 2, and the balloon support 4.
[0017]
In the illustrated embodiment, the pump means 9 is provided at a flexible hose means 10 having a smaller diameter than the tube means 2 and at one end (front end side) of the hose means 10, and is detachably attached to the joint means 7. A hollow egg-shaped manually pressed rubber sphere provided at the other end (base end side) of the quick connection means 11 capable of quick connection and at the other end (base end side) of the hose means 10 and having a check valve 16 and an openable / closable vent at the base end; 12. The pump means 9 may be a power pump instead of such a manual pump used for a sphygmomanometer.
[0018]
In the illustrated embodiment, the tube means 2 and the hose means 10 are formed of a transparent material. However, the present invention is not limited to the transparent material, and may be formed of an opaque material or a colored material.
[0019]
In use, the transanal colon retractor 1 of the present invention inserts the tube means 2 into the anus from a balloon side end in a state where the balloon element 5 is contracted to a surgical site, for example, near the vicinity of a tumor. Thereafter, air is pumped into the balloon element 5 from the lumen of the tube means 2, the longitudinal holes and the lateral holes 4b of the balloon support 4 by operating the pump means 9, and the balloon element 5 is inflated. As a result, the balloon element 5 comes into close contact with the intestinal tract. As a result, the intestinal tract can be grasped, worshiped, and towed so as to widen the field of view of the operation site and facilitate the operation. Therefore, the balloon element 5 inserted into the intestinal tract 14 is inflated by the air pumping, and a gap 15 is created in the intestinal tract 14 so that the doctor's field of view can be expanded (see FIGS. 3 and 4).
[0020]
After the operation, the pump means 9 is operated. For example, in the illustrated embodiment, the screw cap 13 is loosened to open the air vent, thereby evacuating the air inside the balloon element 5 and contracting the balloon element 5 to intestine tract. The contact with the tube means 14 is released, and the entire tube means 2 is withdrawn from the intestinal tract and the anus.
[0021]
【The invention's effect】
According to the transanal colon retractor of the present invention, rather than grasping the intestinal tract with forceps inserted into the abdomen via a trocar, it is inserted from the anus and brought into close contact with the inside of the intestinal tract, so that the abdomen is wounded. It is a non-invasive, non-invasive material that directly grasps the tumor, damages the intestinal tract, and spreads the cancer in the case of surgery for lesions such as cancer, like a traditional forceps-like retractor. There is no danger that the surgical site, for example, the intestinal tract near the tumor, can be safely grasped, prayed, and pulled to widen the surgical site, secure the field of view of the practitioner, and facilitate the operation.
[Brief description of the drawings]
FIG. 1 is a perspective view of a transanal colon retractor according to the present invention.
FIG. 2 is a partial cross-sectional side view of the balloon means of the transanal colon retractor of the present invention.
FIG. 3 is an explanatory view showing a state where a balloon element is inserted into an intestinal tract.
FIG. 4 is an explanatory view showing a state where an inflated balloon element is inserted into an intestinal tract.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 anal colon retractor 2 tube means 2 a distal tube part 2 b proximal tube part 3 balloon means 4 balloon support 4 a longitudinal hole 4 b lateral hole 5 balloon element 6 bolt 6 a bolt head 6 b nut 7 joint means 8 grip 9 Pump means 10 Hose means 11 Quick connection means 12 Manually pressed rubber sphere 13 Screw cap 14 Intestinal tract 15 Gap 16 Check valve

Claims (3)

In a retractor for grasping the large intestine for laparoscopic colon surgery, a tube means for transanally inserted into the large intestine,
A balloon support provided at the inner end of the large intestine of the tube means, the balloon support having a longitudinal hole connected to the inner end of the large intestine of the tube means in an airtight manner and communicating with the lumen of the tube means; A balloon comprising: a lateral hole means communicating radially from a longitudinal hole and opening to the outer surface of the balloon support; and a telescopic balloon element hermetically connected to the balloon support so as to surround the lateral hole means. Means,
Joint means provided at the outer anal end of the tube means,
Pump means connected to the joint means for supplying or discharging air to the balloon element through the joint means, the tube means, and the balloon support to expand or contract the balloon element. Transanal colon retractor. The pump means,
Hose means smaller in diameter than the tube means,
Quick connection means provided at one end of the hose means, which can be quickly and detachably connected to the joint means,
2. The transanal colon retractor according to claim 1, wherein said hose means comprises a hollow egg-shaped manually pressed rubber sphere having a check valve and an openable / closable vent at the other end of said hose means. . The transanal colon retractor according to claim 1 or 2, wherein grip means is provided at an end of the tube means on the joint side.

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