CN114931407A - Pneumoperitoneum-free device - Google Patents

Abstract

The invention provides a pneumoperitoneum-free device, which is characterized in that: the ring comprises a first ring body (1) and a second ring body (2) which are coaxially distributed, wherein a reticular channel (3) is connected between the first ring body (1) and the second ring body (2), and a central hole of the first ring body (1) is an even number of polygonal holes; the section of the second ring body (2) is of an approximate 8-shaped structure; the diameter of the first ring body (1) is larger than that of the second ring body (2). The invention has simple structure and convenient use, and the abdominal wall which takes the second ring body as the boundary can be unfolded upwards in a dome shape by lifting the first ring body, thereby establishing the working space in the body. Meanwhile, because the connection between the ring bodies is of a net structure, sufficient space is provided for freely establishing the trocar working channel.

Description

A pneumoperitoneum device

Technical field:

The invention relates to the field of medical devices, in particular to a pneumoperitoneum-free device.

Background technique:

Laparoscopic surgery is more and more widely used in clinical practice because of its wide field of view and clear reality. However, in laparoscopic surgery, since it is necessary to establish a working space through high-pressure pneumoperitoneum in the original hidden space, it has a certain impact on the cardiopulmonary function of patients, especially elderly patients cannot enjoy laparoscopic surgery because they cannot tolerate high-pressure pneumoperitoneum benefits.

In this regard, many surgeons have designed various abdominal wall lifting devices without pneumoperitoneum to simulate the effect of pneumoperitoneum, but all of them are ineffective. At present, it seems that there are three main design ideas: 1. Multi-point suspension method, For example, there are now commercially available pneumoperitoneal laparoscopic devices. Its disadvantage is that it will form a triangular tent effect, and the position where the suspension point is pulled outward without traction will collapse inward, just like a triangular tent, the space formed is smaller, and there will be no dome-like space structure like in the state of insufficiency. , Due to this shortcoming, the device is generally used in limited surgical scope such as cholecystectomy or where the structure of the human body can naturally resist tissue collapse, such as gynecological surgery.

2. The support is accomplished by passing steel bars through the body cavity in a manner similar to a plastic greenhouse, but this equipment is complex and traumatic, and considering the huge differences in the abdominal cavity of people of different weights, there are few clinical applications.

3. The abdominal wall is supported by a similar umbrella-like keel, but the abdominal cavity of the human body is an irregular shape and does not extend uniformly in all directions like an umbrella, so the design of the keel is a more difficult choice. At the same time, the folding and unfolding process of the keel will have higher requirements on space, which is also limited in practical application.

In addition, none of the above three designs have a good solution to the impact on the selection of puncture points. In this case, we carefully analyzed the clinical requirements as follows: 1. Establish a space to make the abdominal wall unfold as much as possible like a dome. 2. There is more space to freely establish a trocar (puncture) working channel.

Invention content:

The present invention provides a pneumoperitoneum-free device in order to overcome the deficiencies in the prior art.

This application provides the following technical solutions:

A pneumoperitoneum-free device is characterized in that: it comprises a first ring body and a second ring body that are coaxially distributed, a mesh channel is connected between the first ring body and the second ring body, and the first ring body and the second ring body are connected The central hole of a ring body is an even-numbered polygonal hole; the cross section of the second ring body is an approximate 8-shaped structure, and the diameter of the first ring body is larger than the diameter of the second ring body.

On the basis of the above technical solutions, the following further technical solutions are also provided:

The mesh channel is a polypropylene wire mesh, and a rubber layer is wrapped on the wires of the polypropylene wire mesh.

The first ring body is inversely tapered, and a group of hemispherical convex points are evenly distributed on the upper end surface of the first ring body.

Invention advantages:

The invention has simple structure and convenient use. By pulling the first ring body, the abdominal wall bounded by the second ring body can be expanded upward in a dome-like manner, thereby establishing a working space in the body. At the same time, because the connection between the rings is a mesh structure, there is sufficient space to freely establish the trocar working channel.

Description of drawings:

1 is a schematic structural diagram of Embodiment 1 of the present invention;

Fig. 2 is the schematic diagram when embodiment 2 is used;

Fig. 3 is the structural representation of the first ring body in Fig. 2;

Detailed ways:

Example 1:

As shown in FIG. 1 , a pneumoperitoneum-free device is characterized in that: it includes a first ring body 1 and a second ring body 2 that are coaxially distributed. The first ring body 1 is a medical plastic ring with a diameter of 200-250 mm. The second ring body 2 is a medical plastic ring with a diameter of 80 mm, and the cross section of the second ring body is an approximate 8-shaped structure, so that the second ring body can be folded.

A mesh-shaped channel 3 is connected between the first ring body 1 and the second ring body 2 , and the mesh-shaped channel 3 is a wire mesh made of a polymer material, and the wire is wrapped with a rubber layer. Due to the juxtaposed structure of the first and second ring bodies, it can be turned over and folded and fixed. By turning over the second ring body, the mesh structure connected between the two rings can be tightened to hold the abdominal wall, and then the second ring body can be pulled up. . Thus, the abdominal wall in the body is unfolded upward in a dome-like manner, thereby establishing a working space in the body.

Example 2:

As shown in Figures 2 and 3, a pneumoperitoneum-free device is characterized in that it comprises a first ring body 1 and a second ring body 2 which are coaxially distributed. The first ring body 1 is a medical plastic ring with a diameter of 200-250 mm, and its central hole is a hexagonal hole, so a group of coaxially distributed edges 1a are uniformly distributed on the hole wall. The second ring body 2 is a medical plastic ring with a diameter of 80 mm, and the cross section of the second ring body is an approximate 8-shaped structure, so that the second ring body can be folded.

A mesh channel 3 is connected between the first ring body 1 and the second ring body 2. The mesh channel 3 is a polypropylene wire mesh, and the wire of the polypropylene mesh is wrapped with a rubber layer or silica gel Floor.

The diameter of the upper end of the first ring body 1 is larger than the diameter of the lower end, so that the first ring body 1 is inversely tapered, and there is no set of hemispherical convex points 1b on the upper end surface of the first ring body 1 .

Use process:

First, an incision is made in the patient's abdomen, and the length of the incision is smaller than the diameter of the first ring body and the diameter of the lower end of the second ring body.

Knead the ring body of the first ring body into a straight-line shape, and then insert it into the incision downward to make it completely enter the abdominal cavity. human tissue. Since the first ring body in Example 3 is an inverted cone, the contact surface between the upper end surface and the human tissue is large, and the bumps on the first ring body can also increase the frictional force between the upper end surface of the first ring body and the human tissue.

Due to the juxtaposed structure of the first and second ring bodies, it can be turned over and folded and fixed. By turning over the second ring body, the mesh structure connected between the two rings can be tightened to hold the abdominal wall, and then the second ring body can be pulled up. . Therefore, the abdominal wall 5 in the body is raised as a whole in a dome-like manner, thereby forming a pneumoperitoneum-free operation space under the abdominal wall in the body.

And because of the existence of the mesh channel, the abdominal wall will not collapse and affect the visual field, and because of the existence of the mesh, the trocar's puncture selection is not significantly affected. In theory, the state of pneumoperitoneum is replicated to the maximum extent.

Claims (3)

1. An pneumoperitoneum-free device, comprising: the ring comprises a first ring body (1) and a second ring body (2) which are coaxially distributed, wherein a reticular channel (3) is connected between the first ring body (1) and the second ring body (2), and a central hole of the first ring body (1) is an even number of polygonal holes; the section of the second ring body (2) is of an approximate 8-shaped structure; the diameter of the first ring body (1) is larger than that of the second ring body (2).

2. A pneumoperitoneum device as claimed in claim 1, wherein: the reticular channel (3) is a silk screen made of high polymer materials, and a rubber layer is wrapped on the silk screen.

3. A pneumoperitoneum device as claimed in claim 1, wherein: the first ring body (1) is inverted cone-shaped, and a group of hemispherical salient points (1 b) are uniformly distributed on the upper end surface of the first ring body (1).

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