Air leakage prevention laparoscope sheathing canal

Abstract

An air leakage prevention laparoscope sheathing canal comprises an outer sheathing canal and an inner sheathing canal, the inner sheathing canal is inserted into the outer sheathing canal and is in threaded connection with the outer sheathing canal, a flexible duckbill valve is fixed to the upper portion of the inner wall of the outer sheathing canal, an inner clamping ring is fixed to the bottom of the outer sheathing canal, and an outer clamping ring is arranged on the outer wall of the outer sheathing canal. The inner sheath tube is hinged to the outer clamping ring through a traction mechanism; the inner sheath tube drives the outer clamping ring to move upwards or downwards; buffering air bag layers are arranged on the clamping faces of the outer clamping ring and the inner clamping ring, a first inflation and deflation connector and a second inflation and deflation connector are led out of the outer sheath tube and the outer clamping ring respectively, and the first inflation and deflation connector and the second inflation and deflation connector are connected with the buffering air bag layers through air guide tubes. The sheathing canal can replace a trocar to establish a more closed surgical operation channel, and the duckbill valve arranged on the inner wall of the sheathing canal can reduce air leakage in the operation process of surgical instruments; the sheath tube is clamped on the inner wall and the outer wall of an abdominal cavity opening through the inner clamping ring and the outer clamping ring, and fixation is firmer.

Description

Technical Field

[0001] The utility model relates to the field of medical auxiliary instruments, in particular to an air leakage-proof laparoscope sheath. Background Art

[0002] Laparoscopic surgery is a type of minimally invasive surgery. It is performed in a closed abdominal cavity under the monitoring and guidance of a laparoscope on a display screen. It can complete the exploration of diseased tissues, electrocoagulation, hemostasis, tissue separation, cutting and suturing, etc. Compared with traditional laparotomy, it has the advantages of less trauma, fewer complications and faster recovery. Laparoscopic surgery requires making several holes in the abdominal skin, inserting the laparoscope, air needle and surgical instruments into the abdominal cavity from different abdominal holes, using the air needle to fill the abdominal cavity with gas and establish pneumoperitoneum, and using the laparoscope to provide a surgical field of view to guide the surgical instruments for the operation.

[0003] Currently, a puncture card is mainly used to puncture the abdomen to establish a corresponding surgical channel. However, the puncture card has the problem of air leakage during use. How to establish a more closed surgical channel after abdominal puncture (the surgical channel can prevent air leakage during the entry and exit of surgical instruments) and how to fix it more firmly to the abdominal hole are technical problems that urgently need to be solved. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an anti-leakage laparoscopic sheath, which can replace the puncture card to establish a more closed surgical operation channel. The duckbill valve arranged on the inner wall of the sheath can reduce the leakage during the operation of surgical instruments and maintain the air pressure in the abdominal cavity. The sheath is clamped on the inner wall and outer wall of the abdominal cavity opening by an inner clamping ring and an outer clamping ring, and is fixed more firmly to prevent the problem of tube detachment. At the same time, a buffer air bag layer is arranged on the clamping surfaces of the inner clamping ring and the outer clamping ring, which further increases the sealing of the sheath and prevents the gas in the abdominal cavity from escaping through the gaps around the abdominal cavity opening.

[0005] In order to achieve the above technical effects, the utility model is implemented through the following technical solutions:

[0006] A leak-proof laparoscopic sheath comprises an outer sheath and an inner sheath, the inner sheath is inserted into the outer sheath and is threadedly connected to the outer sheath, a flexible duckbill valve is fixed on the inner wall of the outer sheath, an inner clamping ring is fixed on the bottom of the outer sheath, an outer clamping ring is arranged on the outer wall of the outer sheath, and the inner sheath is hinged to the outer clamping ring through a connecting mechanism; when the inner sheath rotates and moves upward, the outer clamping ring slides upward along the outer sheath, and when the inner sheath rotates and moves downward, the outer clamping ring moves downward along the outer sheath; a buffer airbag layer is arranged on the clamping surfaces of the outer clamping ring and the inner clamping ring, a first inflation and deflation joint and a second inflation and deflation joint are respectively led out from the outer sheath and the outer clamping ring, and the first inflation and deflation joint and the second inflation and deflation joint are connected to the buffer airbag layer through an air guide tube.

[0007] Furthermore, limiting sliding holes are provided on the front and rear sides of the outer sheath tube, an inner layer of the outer clamping ring is provided with an involvement ring, the outer clamping ring is fixedly connected to the involvement ring through a limiting slider, the outer clamping ring and the involvement ring are respectively arranged outside and inside the lumen of the outer sheath tube, the limiting slider extends from the limiting slider, a rotating groove is provided on the annular surface of the involvement ring, a rotating buckle is fixed on the bottom of the inner sheath tube, the rotating buckle is inserted into the rotating groove and can rotate in the rotating groove, and the rotating buckle, the involvement ring and the rotating groove constitute an involvement mechanism.

[0008] Furthermore, the inner sheath tube and the outer sheath tube are made of silicone material.

[0009] The beneficial effects of the utility model are as follows: the sheath can replace the puncture card to establish a more closed surgical operation channel, and the duckbill valve arranged on the inner wall of the sheath can reduce the amount of air leakage during the operation of surgical instruments and maintain the air pressure in the abdominal cavity; the sheath is clamped on the inner wall and outer wall of the abdominal cavity opening by the inner clamping ring and the outer clamping ring, and is fixed more firmly to prevent the problem of tube detachment. At the same time, a buffer air bag layer is arranged on the clamping surface of the inner clamping ring and the outer clamping ring, which further increases the sealing of the sheath and prevents the gas in the abdominal cavity from escaping through the gaps around the abdominal cavity opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a schematic diagram of the overall structure of the air leakage-proof laparoscope sheath;

[0012] Figure 2 It is a schematic diagram of the composition structure of the air leakage-proof laparoscopic sheath;

[0013] Figure 3 It is a schematic diagram of the cross-sectional structure of the air leakage-proof laparoscope sheath.

[0014] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0015] 1-outer sheath, 2-inner clamping ring, 3-inner sheath, 4-outer clamping ring, 5-buffer airbag layer, 6-limiting sliding hole, 7-first inflation and deflation joint, 8-second inflation and deflation joint, 9-duckbill valve, 31-threaded tube, 32-limiting retaining ring, 33-rotating buckle, 41-involvement ring, 42-limiting slider, 43-rotating slot. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] like Figure 1 As shown, an anti-leakage laparoscope sheath comprises an outer sheath 1 and an inner sheath 3, the inner sheath 3 is inserted into the outer sheath 1 and is threadedly connected to the outer sheath 1, a flexible duckbill valve 9 is fixed on the upper inner wall of the outer sheath 1, an inner clamping ring 2 is fixed on the bottom of the outer sheath 1, an outer clamping ring 4 is arranged on the outer wall of the outer sheath 1, and the inner sheath 3 is hinged to the outer clamping ring 4 through a linkage mechanism; when the inner sheath rotates and moves upward, the outer clamping ring slides upward along the outer sheath, and when the inner sheath rotates and moves downward, the outer clamping ring moves downward along the outer sheath; a buffer airbag layer 5 is arranged on the clamping surfaces of the outer clamping ring and the inner clamping ring, and a first inflation and deflation joint 7 and a second inflation and deflation joint 8 are respectively led out from the outer sheath and the outer clamping ring, and the first inflation and deflation joint and the second inflation and deflation joint are connected to the buffer airbag layer through an air guide tube.

[0018] like Figure 2-3As shown, limit sliding holes 6 are provided on the front and rear sides of the outer sheath tube, and an involvement ring 41 is provided on the inner layer of the outer clamping ring 4. The outer clamping ring 4 is fixedly connected to the involvement ring 41 through a limit sliding block 42. The outer clamping ring 4 and the involvement ring 41 are respectively arranged outside and inside the lumen of the outer sheath tube 1, and the limit sliding block 42 extends from the limit sliding block 6. A rotation groove 43 is provided on the annular surface of the involvement ring 41, and a rotation buckle 33 is fixed to the bottom of the inner sheath tube 3. The rotation buckle 33 is inserted into the rotation groove 43 and can rotate in the rotation groove 43. The involvement ring will slide up or down along the limit sliding block when the inner sheath tube spirals up or spirals down, and the outer clamping ring slides up or down under the traction of the limit sliding block; the rotation buckle, the involvement ring and the rotation groove constitute an involvement mechanism, and a limit retaining ring is fixed on the top of the inner sheath tube.

[0019] In this embodiment, the inner sheath tube and the outer sheath tube are made of silicone material.

[0020] The specific working application of this device is as follows: the outer sheath tube 1 and the inner clamping ring 2 are inserted obliquely from the abdominal puncture hole, and then the outer sheath tube and the inner sheath tube are straightened, and the inner sheath tube 3 is spirally rotated, and the inner sheath tube will move downward, and the rotating buckle at the bottom of the inner sheath tube rotates on the involvement ring and pushes the involvement ring downward, and the involvement ring pushes the outer clamping ring 4 downward through the limit slider, and the inner clamping ring 2 and the outer clamping ring 4 gradually approach and clamp on the inner wall and outer wall of the abdominal puncture hole, and then the buffer airbag layer 5 is inflated through the first inflation and deflation joint 7 and the second inflation and deflation joint 8. After inflation, the buffer airbag layer on the inner clamping ring 2 and the outer clamping ring 4 will be tightly attached to the cortex, which can prevent air leakage in the gap and prevent cortex pinching; a silicone duckbill valve 9 is fixed on the inner wall of the inner sheath tube, which is made of soft material and the front end remains in a fitted state to prevent air leakage, which can allow the operation of surgical instruments and meet the deflection operation of surgical instruments to various angles.

[0021] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Claims

1. A leak-proof laparoscopic sheath, characterized in that: It comprises an outer sheath tube and an inner sheath tube, the inner sheath tube is inserted into the outer sheath tube and is threadedly connected with the outer sheath tube, a flexible duckbill valve is fixed on the inner wall of the outer sheath tube, an inner clamping ring is fixed on the bottom of the outer sheath tube, an outer clamping ring is arranged on the outer wall of the outer sheath tube, and the inner sheath tube is hinged to the outer clamping ring through a connecting mechanism; when the inner sheath tube rotates and moves upward, the outer clamping ring slides upward along the outer sheath tube, and when the inner sheath tube rotates and moves downward, the outer clamping ring moves downward along the outer sheath tube; a buffer airbag layer is arranged on the clamping surfaces of the outer clamping ring and the inner clamping ring, a first inflation and deflation joint and a second inflation and deflation joint are respectively led out from the outer sheath tube and the outer clamping ring, and the first inflation and deflation joint and the second inflation and deflation joint are connected to the buffer airbag layer through an air guide tube.

2. The air leakage-proof laparoscopic sheath according to claim 1, characterized in that: The front and rear sides of the outer sheath tube are provided with limiting sliding holes, the inner layer of the outer clamping ring is provided with an involvement ring, the outer clamping ring is fixedly connected to the involvement ring through a limiting slider, the outer clamping ring and the involvement ring are respectively arranged outside and inside the lumen of the outer sheath tube, the limiting slider extends from the limiting slider, a rotating groove is provided on the annular surface of the involvement ring, a rotating buckle is fixed on the bottom of the inner sheath tube, the rotating buckle is inserted into the rotating groove and can rotate in the rotating groove, and the rotating buckle, the involvement ring and the rotating groove constitute an involvement mechanism.

3. The air leakage-proof laparoscopic sheath according to claim 1 or 2, characterized in that: The inner sheath tube and the outer sheath tube are made of silicone material.

Images