CN217510573U - Laparoscope puncture outfit with fixing device - Google Patents

Abstract

The utility model discloses a laparoscopic trocar with a fixing device, comprising an outer sheath of the trocar, an inner tube, an outer surface fixing part and an inner surface fixing part, and the outer surface fixing part is screwed with the trocar outer sheath. , the outer surface fixing part can be slid down to the outer surface of the abdomen through the thread, the inner surface fixing part is arranged on the lower part of the outer sheath of the trocar, and the inner surface fixing part is located in the abdomen of the patient when in use, During the operation, the lower part of the outer sheath of the trocar is located between the outer surface fixing part and the inner surface fixing part, so that the outer sheath of the trocar does not move outward or inward during the operation, which plays the role of fixing the outer sheath of the trocar. In the utility model, the outer surface fixing part and the inner surface fixing part are arranged to fix the entire trocar outer sheath, and the utility model has a compact structure, is easy to use, and reduces the risk caused by unstable fixation of the trocar outer sheath.

Description

A laparoscopic trocar with a fixing device

technical field

The utility model relates to the field of laparoscopic puncture, in particular to a laparoscopic puncture device with a fixing device.

Background technique

Laparoscopic surgery is currently the most widely used minimally invasive surgery. During the operation, a laparoscopic trocar is used to pierce the body wall (thorax, abdomen, waist, etc.) through the skin. The surgical instruments are inserted to perform corresponding surgical operations on the tissues and organs in the above-mentioned body cavity. The laparoscopic trocar is an instrument that must be used in this operation. The existing laparoscopic trocar has no effective fixing device after piercing the body cavity, and the trocar often protrudes out of the body and penetrates into the body during the operation. After the laparoscopic trocar is pierced into the human body, the outer sheath of the trocar may be displaced with the repeated entry and exit of the operating instrument. When the trocar is displaced into the human body, it may affect the opening and closing of the operating device and affect the progress of the operation. And when the operating instrument moves outside the human body, it may occur that the entire trocar outer sheath is completely detached from the human body, so that it needs to be punctured again. At present, almost all the trocars on the market rely on the threads on the outer sheath of the trocar to increase the frictional force to fix the trocar.

Therefore, how to design a laparoscopic trocar with a fixing device has become an urgent problem to be solved.

Utility model content

The utility model provides a laparoscopic trocar with a fixing device to solve the problem that the existing laparoscopic trocar cannot fix the trocar.

The utility model provides a laparoscopic trocar with a fixing device, comprising an outer sheath of the trocar and an inner tube, the inner tube is movably arranged in the outer sheath of the trocar, and the lower outer surface of the outer sheath of the trocar is Provided with an external thread, the laparoscopic trocar with a fixing device further includes an outer surface fixing part and an inner surface fixing part, wherein:

the outer surface fixing part is threadedly connected with the outer sheath of the trocar;

The inner surface fixing part is arranged at the lower part of the outer sheath of the trocar.

Optionally, the outer surface fixing portion includes a snap ring and a threaded rod, wherein:

the snap ring is fixedly connected with the threaded rod;

the snap ring is sleeved on the outer surface of the outer sheath of the trocar;

The threaded rod is sleeved on the outer surface of the outer sheath of the trocar, the thread of the threaded rod is an inner thread that matches the outer thread on the outer sheath of the trocar, and the threaded rod is connected with the inner thread through the inner thread. The outer sheath of the trocar is slid up and down;

A handle is provided on the outer sheath of the trocar, and the snap ring is located below the handle.

Optionally, the inner surface fixing part includes a balloon, a connecting pipe and a valve, wherein:

The upper outer surface of the outer sheath of the trocar is provided with a connection part, and the valve is arranged on the connection part;

The airbag is arranged at the lower part of the outer sheath of the puncture device, the airbag is sleeved on the outer surface of the outer sheath of the puncture device, one end of the connecting tube is connected with the airbag, and the other end of the connecting tube is connected with the airbag. the valve connection.

Optionally, the longitudinal centerline of the threaded rod coincides with the longitudinal centerline of the trocar outer sheath.

Optionally, the length of the threaded rod is less than the length of the external thread on the outer sheath of the trocar.

The utility model provides a laparoscopic trocar with a fixing device, which comprises an outer sheath of the trocar, an inner tube, an outer surface fixing part and an inner surface fixing part, and the outer surface fixing part is screwed with the outer sheath of the trocar. , the outer surface fixing part can be slid down to the outer surface of the abdomen through the thread, the inner surface fixing part is arranged on the lower part of the outer sheath of the trocar, and the inner surface fixing part is located in the abdomen of the patient when in use, During the operation, the lower part of the outer sheath of the trocar is located between the outer surface fixing part and the inner surface fixing part, so that the outer sheath of the trocar does not move outward or inward during the operation, which plays the role of fixing the outer sheath of the trocar. In the utility model, the outer surface fixing part and the inner surface fixing part are arranged to fix the entire trocar outer sheath, and the utility model has a compact structure, is easy to use, and reduces the risk caused by unstable fixation of the trocar outer sheath.

Description of drawings

In order to illustrate the technical solutions of the present invention more clearly, the accompanying drawings that need to be used in the embodiments will be briefly introduced below. Obviously, for those of ordinary skill in the art, without creative labor , other drawings can also be obtained from these drawings.

1 is a schematic structural diagram of a laparoscopic trocar with a fixing device provided by the utility model;

2 is a schematic diagram of a laparoscopic trocar with a fixing device provided by the utility model in use;

3 is a partial side view of a laparoscopic trocar with a fixing device provided by the utility model;

4 is a top view of a laparoscopic trocar with a fixing device provided by the present invention.

Illustration description:

Among them, 1- trocar outer sheath; 2- inner tube; 3- snap ring; 4- threaded rod; 5- handle; 6- airbag; 7- connecting tube; 8- valve; 9- connecting part;

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the following description, many specific details are set forth in order to fully understand the present utility model, but the present utility model can also be implemented in other ways different from those described again, and those skilled in the art can do so without violating the connotation of the present utility model. Similar promotion is made below, so the present invention is not limited by the specific embodiments disclosed below.

Referring to FIG. 1 and FIG. 2 , the present invention provides a laparoscopic trocar with a fixing device, comprising an outer sheath 1 of the trocar and an inner tube 2 , and the inner tube 2 is movably arranged in the outer sheath 1 of the trocar , the lower outer surface of the outer sheath 1 of the trocar is provided with an external thread, and the laparoscopic trocar with a fixing device also includes an outer surface fixing part and an inner surface fixing part, wherein:

The outer surface fixing part is threadedly connected with the outer sheath 1 of the trocar;

The inner surface fixing part is arranged at the lower part of the outer sheath 1 of the trocar.

When in use, the trocar outer sheath 1 and the inner tube 2 are placed into the abdomen of the patient, and the trocar outer sheath 1 is fixed by the outer surface fixing part and the inner surface fixing part, and the trocar outer sheath 1 is fixed. The lower part of the outer sheath 1 of the trocar is located between the outer surface fixing part and the inner surface fixing part. At this time, the outer sheath 1 of the trocar will not slide outward or inward during the operation, and then the Take out the inner tube 2 and proceed to the next step.

The present invention does not change the original structure of the trocar outer sheath 1 and the inner tube 2, that is, the trocar outer sheath 1 and the inner tube 2 are common structures in laparoscopic surgery. The outer sheath 1 of the trocar and the inner tube 2 are both hollow structures, and the inner diameter of the inner tube 2 is smaller than the inner diameter of the outer sheath 1 of the trocar, and the length of the outer sheath 1 of the trocar is smaller than that of the inner tube 2 The length of the trocar outer sheath 1 and the front end of the inner tube 2 are both pointed structures, the present invention adds the outer surface fixing part and the inner surface fixing part on the trocar outer sheath 1 The outer sheath 1 of the trocar is fixed from the outside and inside, that is, the outer sheath 1 of the trocar is fixed in both directions, which ensures the stability of the outer sheath 1 of the trocar.

Optionally, the outer surface fixing portion includes a snap ring 3 and a threaded rod 4, wherein:

The snap ring 3 is fixedly connected with the threaded rod 4, and the snap ring 3 is vertically arranged with the threaded rod 4;

The snap ring 3 is sleeved on the outer surface of the trocar outer sheath 1 , the central part of the snap ring 3 is provided with a circular hole, and the lower part of the trocar outer sheath 1 passes through the hole on the snap ring 3 . round hole.

The threaded rod 4 is a hollow structure, the threaded rod 4 is sleeved on the outer surface of the outer sheath 1 of the trocar, and the thread of the threaded rod 4 is compatible with the external thread on the outer sheath 1 of the trocar. Matching internal thread, the threaded rod 4 slides up and down with the trocar outer sheath 1 through the internal thread, and the longitudinal centerline of the threaded rod 4 coincides with the longitudinal centerline of the snap ring 3;

The trocar sheath 1 is provided with a handle 5 , and the snap ring 3 is located below the handle 5 .

During use, the medical worker holds the snap ring 3 and twists the snap ring 3 downward until the lower plane of the snap ring 3 is in contact with the outer surface of the patient's cortex 10 , because the snap ring 3 Fitted with the outer surface of the skin layer 10 of the patient, and the lower part of the trocar sheath 1 is threadedly connected with the threaded rod 4, so the trocar sheath 1 will not slide inward.

Optionally, the inner surface fixing part includes an air bag 6, a connecting pipe 7 and a valve 8, wherein:

The upper outer surface of the trocar outer sheath 1 is provided with a connecting portion 9, and the valve 8 is arranged on the connecting portion 9;

Two valves 8 are provided on the connecting part 9 , one valve 8 is used to inflate and deflate the air bag 6 , and the other valve 8 is used to inflate and deflate the abdominal cavity of the patient during surgery.

The airbag 6 is arranged on the lower part of the outer sheath 1 of the trocar, the airbag 6 is sleeved on the outer surface of the outer sheath 1 of the trocar, and the airbag 6 is arranged on the outer sheath 1 of the trocar near the tip position, the tip of the outer sheath 1 of the trocar is exposed, that is, the balloon 6 does not wrap the tip of the outer sheath 1 of the trocar, and one end of the connecting tube 7 is connected to the balloon 6, and the connection The other end of the pipe 7 is connected to the valve 8, and the valve 8 is connected to an external air pump.

Referring to FIGS. 3 and 4 , the connecting tube 7 is located between the inner side wall of the outer sheath 1 of the trocar and the outer side wall of the inner tube 2 .

During use, after the trocar outer sheath 1 penetrates into the patient's cortex 10, the valve 8 is opened, and the gas is passed into the connecting pipe 7 through the air pump. Since the connecting pipe 7 is connected with the air bag 6, After the gas is passed into the connecting tube 7, the gas will enter the airbag 6, and the airbag 6 will expand at this time. The airbag 6 is located in the lower part of the outer sheath 1 of the trocar, so the airbag 6 is located in the skin layer 10 of the patient. When the airbag 6 is inflated, the airbag 6 can increase the circumference of the outer sheath 1 of the trocar by about 0.5-1 cm. The airbag 6 is made of a retractable material, and the airbag 6 has a firm support for the inner wall of the outer sheath 1 of the trocar, so that the outer sheath 1 of the trocar will not slide outward during the operation.

Optionally, the longitudinal centerline of the threaded rod 4 coincides with the longitudinal centerline of the trocar outer sheath 1 .

Optionally, the length of the threaded rod 4 is less than the length of the external thread on the outer sheath 1 of the trocar, which can ensure that the lower end of the outer sheath 1 of the trocar is located in the cortex 10 of the patient.

The utility model provides a laparoscopic trocar with a fixing device, comprising a trocar outer sheath 1, an inner tube 2, an outer surface fixing part and an inner surface fixing part, the outer surface fixing part and the trocar outer sheath 1 threaded connection, the outer surface fixing part can be slid down to the outer surface of the abdomen through the thread, the inner surface fixing part is arranged on the lower part of the trocar outer sheath 1, and the inner surface fixing part is located in the patient when in use In the abdomen, during the operation, the lower part of the outer sheath 1 of the trocar is located between the outer surface fixing part and the inner surface fixing part, so that the outer sheath 1 of the trocar will not move outward or inward during the operation, which plays a role in fixing the puncture. The role of the outer sheath 1. The utility model can fix the entire trocar outer sheath 1 by arranging the outer surface fixing part and the inner surface fixing part, and the utility model has a compact structure, is easy to use, and reduces the risk caused by the unstable fixation of the trocar outer sheath.

The above are only specific embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the principles of the present invention, several improvements and modifications can also be made. These improvements and modifications are also It should be regarded as the protection scope of the present invention.

Claims (5)

1. A laparoscopic trocar with a fixing device, comprising a trocar outer sheath (1) and an inner tube (2), wherein the inner tube (2) is movably arranged in the trocar outer sheath (1), so The lower outer surface of the trocar outer sheath (1) is provided with an external thread, and it is characterized in that the laparoscopic trocar with a fixing device further comprises an outer surface fixing part and an inner surface fixing part, wherein: The outer surface fixing portion is threadedly connected with the trocar outer sheath (1); The inner surface fixing part is arranged at the lower part of the outer sheath (1) of the trocar. 2. The laparoscopic trocar with a fixing device according to claim 1, wherein the outer surface fixing part comprises a snap ring (3) and a threaded rod (4), wherein: The snap ring (3) is fixedly connected with the threaded rod (4); The snap ring (3) is sleeved on the outer surface of the trocar outer sheath (1); The threaded rod (4) is sleeved on the outer surface of the trocar outer sheath (1), and the thread of the threaded rod (4) is adapted to the external thread on the trocar outer sheath (1). The internal thread of the threaded rod (4) is slid up and down with the outer sheath (1) of the trocar through the internal thread; A handle (5) is arranged on the outer sheath (1) of the trocar, and the snap ring (3) is located below the handle (5). 3. The laparoscopic trocar with a fixing device according to claim 2, wherein the inner surface fixing part comprises a balloon (6), a connecting pipe (7) and a valve (8), wherein: The upper outer surface of the trocar outer sheath (1) is provided with a connecting portion (9), and the valve (8) is arranged on the connecting portion (9); The airbag (6) is arranged at the lower part of the outer sheath (1) of the trocar, the airbag (6) is sleeved on the outer surface of the outer sheath (1) of the trocar, and the connecting tube (7) is One end is connected with the air bag (6), and the other end of the connecting pipe (7) is connected with the valve (8). 4. The laparoscopic trocar with a fixing device according to claim 3, wherein the longitudinal centerline of the threaded rod (4) coincides with the longitudinal centerline of the trocar outer sheath (1). 5. The laparoscopic trocar with a fixing device according to claim 4, wherein the length of the threaded rod (4) is smaller than the length of the external thread on the trocar outer sheath (1).

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