A digestive endoscope

Abstract

A digestive endoscope comprises a single-lumen digestive endoscope body, wherein a tube sleeve is arranged on the outer side of the digestive endoscope body in the circumferential direction; the tube sleeve comprises an inner sleeve body and an outer sleeve body which are stacked inside and outside, wherein the inner sleeve body and the outer sleeve body are both made of elastic materials, and the two sides of the inner sleeve body along the arc circumferential direction are correspondingly connected with the two sides of the outer sleeve body along the arc circumferential direction; a fixing ring is arranged at the front of the inner side surface of the inner sleeve body, and the fixing ring is sleeved with the digestive endoscope body; an arc-shaped inflation tube is arranged at the front of the outer side surface of the outer sleeve body, and a connecting tube is arranged between the two ends of the inflation tube, and the inflation tube and the connecting tube constitute a circumferentially closed tube body, and a long strip of gas injection tube connected with the inflation tube is arranged on the inflation tube. The tube sleeve can be unfolded to form an auxiliary sleeve, and the auxiliary sleeve can be used for "two-handed" operation.

Description

Technical Field

[0001] The invention relates to a digestive endoscope. Background Art

[0002] Endoscopic submucosal dissection (ESD) is a minimally invasive surgical method for early gastric cancer first invented by Japanese scholars. Various electrosurgical knives and auxiliary equipment are used together with endoscope guidance to peel off the diseased tissue of the digestive tract. Traditional ESD method uses IT knife and snare, etc. The process is simple, but there are hidden dangers such as residual lesion mucosa and excessive peeling, and the risk of bleeding and perforation is also increased. Relevant studies at home and abroad believe that "two-handed" operation is conducive to rapid and complete removal of lesions and reducing operation time, that is, one channel uses IT knife for peeling, and the other channel uses foreign body forceps or snare to gently lift the lesion or surrounding tissue to fully expose the wound surface. However, the cost of using dual-channel endoscopes is high, and the insertion process of dual-channel endoscopes is also difficult due to their large cross-sectional area, so this method has not yet been popularized in clinical practice. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a digestive endoscope with a tube sleeve, which can be unfolded to form an auxiliary sleeve, and "two-handed" operation can be performed through the auxiliary sleeve during surgery.

[0004] In order to solve the above technical problems, the present invention provides a digestive endoscope, comprising a single-lumen digestive endoscope body with a circular cross-section shape, a tube sleeve with a circular cross-section shape is provided on the circumferential outer side of the digestive endoscope body, and the two sides of the tube sleeve in the length direction are flush with the two sides of the digestive endoscope body in the length direction;

[0005] The side of the arc-shaped tube sleeve close to the digestive endoscope body in the radial direction is the inner side, and the side away from the digestive endoscope body is the outer side. The tube sleeve includes an inner layer sleeve body and an outer layer sleeve body stacked inside and outside. The inner layer sleeve body and the outer layer sleeve body are both made of elastic materials. The two side edges of the inner layer sleeve body along the arc circumference are correspondingly connected to the two side edges of the outer layer sleeve body along the arc circumference.

[0006] A fixing ring is provided on the inner side surface of the inner sleeve near the front end of the digestive endoscope body, and the fixing ring cooperates with the digestive endoscope body and is sleeved on the front part of the digestive endoscope body;

[0007] A circular arc-shaped inflation tube made of flexible material is provided on the outer side surface of the outer sleeve, near the front end of the digestive endoscope body, and is arranged along the circumferential direction of the circular arc of the outer sleeve. A connecting tube connecting the two ends of the inflation tube is provided between the two ends of the inflation tube. The inflation tube and the connecting tube constitute a circumferentially closed tube body. The connecting tube is made of the same material as the inflation tube and the wall thickness of the connecting tube is smaller than the wall thickness of the inflation tube. A long strip of gas injection tube connected to the inflation tube is provided on the inflation tube, and the side of the gas injection tube away from the inflation tube in the length direction is flush with the rear side of the digestive endoscope body.

[0008] For the purpose of simple explanation, the digestive endoscope described in the present invention is referred to as the digestive endoscope below.

[0009] The method of using the digestive endoscope is as follows: insert the head of the digestive endoscope into the target position of the human body, and then inflate the inflation tube and the connecting tube through the air injection tube. As the pressure increases, the connecting tube breaks and the inner sleeve pops out from the connection with the outer sleeve. The arc-shaped tube sleeve becomes a cylindrical auxiliary sleeve, through which the foreign body forceps or snare can be inserted into the human body to perform a "two-handed" operation.

[0010] Advantages of this digestive endoscope: This digestive endoscope is equipped with a tube sleeve, which can be unfolded to form an auxiliary sleeve. Through the auxiliary sleeve, foreign body forceps or snares can be inserted into the human body for "two-handed" operation, which is conducive to rapid and complete removal of lesions and reducing operation time. The auxiliary sleeve is inserted into the human body in a folded form along with the digestive endoscope body, and insertion is convenient. In addition, since this digestive endoscope adopts a relatively low-priced single-lumen digestive endoscope combined with an auxiliary sleeve, the overall cost is cheap, which can effectively reduce the cost of surgery.

[0011] In order to achieve a better use effect of the digestive endoscope, the preferred scheme is as follows:

[0012] Preferably, the diameter of the connecting tube is smaller than the diameter of the inflation tube.

[0013] Connecting pipes with small diameters are more likely to break. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the digestive endoscope (before the sheath is unfolded).

[0015] Figure 2 yes Figure 1 A partial enlarged view of part A.

[0016] Figure 3 This is another schematic diagram of the structure of the digestive endoscope (after the sheath is unfolded). DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 3A digestive endoscope comprises a single-lumen digestive endoscope body 1 with a circular cross-section, a tube sleeve 2 with a circular cross-section is arranged on the outer side of the digestive endoscope body 1, and the two sides of the tube sleeve 2 in the length direction are flush with the two sides of the digestive endoscope body 1 in the length direction;

[0018] The side of the arc-shaped tube sleeve 2 close to the digestive endoscope body 1 in the radial direction is the inner side, and the side away from the digestive endoscope body is the outer side. The tube sleeve 2 includes an inner layer sleeve 21 and an outer layer sleeve 22 stacked inside and outside. The inner layer sleeve 21 and the outer layer sleeve 22 are both made of elastic materials. The two side edges of the inner layer sleeve 21 along the arc circumference are correspondingly connected to the two side edges of the outer layer sleeve 22 along the arc circumference.

[0019] A fixing ring 4 is provided on the inner side surface of the inner layer casing 21 near the front end of the digestive endoscope body 1. The fixing ring 4 cooperates with the digestive endoscope body 1 and is sleeved on the front part of the digestive endoscope body 1.

[0020] A circular arc-shaped gas-filled tube 3 made of flexible material is arranged along the arc circumference of the outer casing 22 near the front end of the digestive endoscope body 1. A connecting tube 31 is provided between the two ends of the gas-filled tube 3 to connect the two ends of the gas-filled tube 3. The gas-filled tube 3 and the connecting tube 31 form a circumferentially closed tube body. The connecting tube 31 is made of the same material as the gas-filled tube 3 and the wall thickness of the connecting tube 31 is less than the wall thickness of the gas-filled tube 3. The diameter of the connecting tube 31 is less than the diameter of the gas-filled tube 3. A long strip gas injection tube 32 is provided on the gas-filled tube 3 to communicate with the gas-filled tube 3. The side of the gas injection tube 32 away from the gas-filled tube 3 in the length direction is flush with the rear side of the digestive endoscope body 1.

[0021] The method of using the digestive endoscope is as follows: insert the head of the digestive endoscope into the target position of the human body, and then inflate the inflation tube 3 and the connecting tube 31 through the gas injection tube 32. As the pressure increases, the connecting tube 31 breaks and the inner sleeve 21 pops out from the connection with the outer sleeve 22. The arc-shaped tube sleeve 2 becomes a cylindrical auxiliary sleeve, through which the foreign body forceps or snare can be inserted into the human body for "two-handed" operation.

[0022] Advantages of the digestive endoscope: The digestive endoscope is provided with a tube sleeve 2, which can be unfolded to form an auxiliary sleeve. The foreign body forceps or snare can be inserted into the human body through the auxiliary sleeve to perform a "two-handed" operation, which is conducive to rapid and complete removal of the lesion and reducing the operation time. In addition, the auxiliary sleeve is inserted into the human body along with the digestive endoscope body 1 in a folded form, which is easy to insert.

[0023] The connecting pipe 31 with a small diameter is more likely to break.

Claims

1. A digestive endoscope, characterized in that: It comprises a single-lumen digestive endoscope body with a circular cross-section shape, wherein a tube sleeve with a circular cross-section shape is arranged on the outer circumference of the digestive endoscope body, and the two sides of the tube sleeve in the length direction are flush with the two sides of the digestive endoscope body in the length direction; The side of the arc-shaped tube sleeve close to the digestive endoscope body in the radial direction is the inner side, and the side away from the digestive endoscope body is the outer side. The tube sleeve includes an inner layer sleeve body and an outer layer sleeve body stacked inside and outside. The inner layer sleeve body and the outer layer sleeve body are both made of elastic materials. The two side edges of the inner layer sleeve body along the arc circumference are correspondingly connected to the two side edges of the outer layer sleeve body along the arc circumference. A fixing ring is provided on the inner side surface of the inner sleeve near the front end of the digestive endoscope body, and the fixing ring cooperates with the digestive endoscope body and is sleeved on the front part of the digestive endoscope body; A circular arc-shaped inflation tube made of flexible material is provided on the outer side surface of the outer sleeve, which is arranged along the arc circumference of the outer sleeve, near the front end of the digestive endoscope body. A connecting tube connecting the two ends of the inflation tube is provided between the two ends of the inflation tube. The inflation tube and the connecting tube constitute a circumferentially closed tube body. The connecting tube is made of the same material as the inflation tube and the wall thickness of the connecting tube is smaller than the wall thickness of the inflation tube. The diameter of the connecting tube is smaller than the diameter of the inflation tube. A long strip of gas injection tube connected to the inflation tube is provided on the inflation tube. The side of the gas injection tube away from the inflation tube in the length direction is flush with the rear side of the digestive endoscope body.

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