Anti-curling laparoscopic incision protection sleeve

Abstract

The present application relates to a kind of anti-curl laparoscope incision protective sleeve, belong to medical instrument technical field.It includes: base assembly, with inner ring and outer ring;Flexible film sleeve, sealing connection between inner ring and outer ring, the outside of flexible film sleeve is equipped with support part, and the inside is provided with passage part;Anti-curl support structure, assembled in the support part of flexible film sleeve, for maintaining the passage form of flexible film sleeve;Length locking mechanism, installed in the lower edge of outer ring, with flexible film sleeve, for limiting the extension length of flexible film sleeve;Air-tight opening and closing assembly, integrated in the upper surface of outer ring, for realizing the air-tight closure and open switching of incision passage;Redundant sealing structure, set on the inside of outer ring, and located below air-tight opening and closing assembly, for improving air-tight protection effect.The technical problem of the defects of prior art anti-curling ability insufficient, no integrated air-tight closure function is solved.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to a protective sleeve for preventing the curling of laparoscopic incisions. Background Technology

[0002] Laparoscopic radical resection of colorectal cancer and gastrointestinal reconstruction, among other minimally invasive surgeries, have become mainstream surgical procedures for treating abdominal diseases due to their advantages such as small incisions, rapid postoperative recovery, and fewer complications. The core procedure involves removing the lesion within the abdominal cavity, then retrieving the specimen and reconstructing the digestive tract through a small external incision. Maintaining pneumoperitoneum pressure and protecting the abdominal wall incision tissue from contamination and damage are crucial for ensuring the smooth execution of the surgery and reducing postoperative complications such as incision infection.

[0003] Disposable incision protectors, also known as wound retractors, are routinely used in clinical practice. Placed at the surgical incision site, they provide 360° retraction and protection of the incision tissue while offering a pathway for specimen retrieval and instrument manipulation. They are essential medical consumables in laparoscopic minimally invasive surgery. Laparoscopic incision protectors must maintain a stable channel shape, possess reliable airtight sealing, and be easy to operate. Currently, the most widely used laparoscopic incision protectors in clinical practice are primarily based on a structure of flexible thin-film cannulas connected by inner and outer double rings. These cannulas are prone to curling, collapse, and wrinkling, leading to narrowing or even blockage of the operating channel. This not only hinders specimen retrieval and instrument access but may also cause tissue damage due to cannula wrinkling, severely impacting the smoothness of the surgical procedure.

[0004] To address the issue of traditional incision protectors' sheaths easily curling, some products have optimized the outer ring's roll-up structure to adjust the sheath length. Rolling up the outer ring tightens the sheath, maintaining its channel shape. However, existing conventional incision protectors lack integrated gas-tight sealing; the connection between the thin-film sheath and the outer and inner rings is merely a physical fit, lacking a dedicated sealing structure, thus failing to maintain abdominal pneumoperitoneum pressure. To prevent gas leakage, the surgeon must temporarily cover the outer ring of the protector with a sterile surgical glove, creating an operating hole by trimming the glove's fingertips to fabricate a sealing device. This glove procedure is cumbersome, has poor sealing reliability, increases the risk of infection, and the fixed size of the modified operating hole makes it unsuitable for surgical instruments of different diameters. Furthermore, instruments passing through the glove can easily damage it, reducing the sealing effect.

[0005] Existing laparoscopic incision protective sleeves have insufficient anti-rolling capabilities and lack integrated airtight sealing functions, failing to meet the high requirements of laparoscopic minimally invasive surgery for smooth operation, pneumoperitoneum stability, and aseptic safety. Summary of the Invention

[0006] This invention provides an anti-rollover laparoscopic incision protective sleeve to solve the technical problems of insufficient anti-rollover capability and lack of integrated airtight sealing function in existing technologies.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solution: A protective sleeve for preventing the curling of a laparoscopic incision includes: a base assembly having an inner ring and an outer ring; a flexible thin-film sleeve sealed between the inner ring and the outer ring, wherein a support portion is provided on the outer side of the flexible thin-film sleeve and a channel portion is provided on the inner side; an anti-curling support structure assembled on the support portion of the flexible thin-film sleeve to maintain the channel shape of the flexible thin-film sleeve; a length locking mechanism installed on the lower edge of the outer ring and adapted to the flexible thin-film sleeve to limit the extension length of the flexible thin-film sleeve; an airtight opening and closing assembly integrated on the upper surface of the outer ring to realize the airtight sealing and opening switching of the incision channel; and a redundant sealing structure disposed on the inner side of the outer ring and located below the airtight opening and closing assembly to improve the airtight protection effect.

[0008] Furthermore, the anti-curling support structure is a memory rib, which is arranged at equal intervals along the axial direction of the flexible film sleeve. The memory rib is a spiral or ring structure and is embedded in the outer wall of the flexible film sleeve. The flexible film sleeve is made of medical-grade transparent TPU film material.

[0009] Furthermore, the length locking mechanism is a pawl-type locking ring, which is rotatably sleeved on the lower edge of the outer ring. The inner wall of the pawl-type locking ring is provided with pawl teeth. The end of the flexible film sleeve connected to the outer ring is provided with a positioning groove that meshes with the pawl teeth. The pawl-type locking ring achieves circumferential locking through the meshing of the pawl teeth and the positioning groove.

[0010] Furthermore, the airtight opening and closing assembly includes a mating lip, an airtight meshing tooth, a slider, and a stop box. The mating lip is hot-melt welded to the upper surface of the outer ring to form an arc-shaped opening. The airtight meshing tooth is embedded in the mating surface of the mating lip. The stop box is fixed to one end of the arc-shaped opening. The slider is slidably assembled on the airtight meshing tooth and is adapted to the stop box.

[0011] Furthermore, the slider is provided with a pressure wedge inside, which is adapted to the airtight meshing tooth shape and is used to push the mating lip to achieve pressure sealing. The slider is provided with a self-locking buckle, which is engaged with the stop box. One side of the stop box is integrated with an inflation port, and a one-way valve is installed inside the inflation port. The stop box is also reserved with an elastic membrane operation hole.

[0012] Furthermore, the redundant sealing structure is a silicone diaphragm flap, which is a wiper-shaped structure that covers the opening area of ​​the airtight opening and closing assembly. The silicone diaphragm flap has a naturally closing micro-opening in the middle.

[0013] Furthermore, the channel portion of the flexible film sleeve includes a main channel and an auxiliary operating hole. The main channel is located at the inner center of the flexible film sleeve. An elastic sealing valve is circumferentially fitted to the main channel. The elastic sealing valve is a multi-lobed elastic silicone structure and is in a closed state under natural conditions.

[0014] Furthermore, an auxiliary positioning structure is provided on the inner side of the flexible film sleeve. The auxiliary positioning structure includes an intestinal clamp and an alignment mark line. The intestinal clamp is an elastic silicone snap-fit ​​structure, and the alignment mark line is evenly distributed along the axial and circumferential directions of the flexible film sleeve.

[0015] Furthermore, both the inner ring and the outer ring are made of biocompatible rigid material, the edges of the inner ring are rounded, the inner surface of the flexible film sleeve is coated with an antibacterial coating, and the connection between the flexible film sleeve and the inner ring and the outer ring is RF high-frequency heat sealing or ultrasonic welding.

[0016] This invention provides a protective sleeve for laparoscopic incisions to prevent curling. The advantages are as follows: By assembling equally spaced memory ribs on the outer side of the flexible film cannula, combined with the length-locking function of the pawl-type locking ring, the stable shape of the flexible film cannula channel is maintained, effectively preventing intraoperative cannula curling and collapse, and ensuring smooth surgical access; by integrating an airtight opening and closing component on the outer ring, rapid airtight and open switching of the incision channel is achieved, eliminating the need for temporary glove modifications, simplifying the surgical procedure, and improving surgical efficiency; by setting a redundant sealing structure of a wiper-shaped silicone diaphragm flap below the airtight opening and closing component, double-layer airtight protection is achieved, effectively improving the reliability of pneumoperitoneum maintenance and preventing abdominal gas leakage from affecting the surgical field of vision; by setting an elastic... The large-diameter main channel of the flexible sealing valve is compatible with the operation of large-sized surgical instruments such as tubular anastomoses, and maintains an airtight seal when instruments pass through, meeting the surgical requirements of laparoscopic gastrointestinal reconstruction. By incorporating an intestinal clamp and alignment marker on the inner side of the flexible film cannula, precise docking of the intestinal ends is achieved, improving the accuracy and efficiency of gastrointestinal reconstruction. The antibacterial coating on the inner surface of the flexible film cannula, combined with the integrated sealing structure, reduces contamination from additional procedures, effectively lowering the risk of postoperative incision infection and improving surgical safety. The rounded corners of the inner ring and the selection of biocompatible materials minimize damage to abdominal wall and intra-abdominal tissues during surgery, enhancing the product's clinical safety and comfort. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of an anti-rolling laparoscopic incision protective sleeve without the airtight opening and closing component, provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an anti-rolling laparoscopic incision protective sleeve provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the airtight opening and closing assembly provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the length locking mechanism provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the installation structure of the airtight opening and closing assembly and the outer ring provided in an embodiment of the present invention; Figure 6 A side view of a protective sleeve for preventing the curling of a laparoscopic incision, provided in an embodiment of the present invention; Figure 7 For along Figure 6 Schematic diagram of the structure of AA path expansion Figure 8 This is a schematic diagram of the installation structure of the length locking mechanism provided in an embodiment of the present invention.

[0019] In the diagram: 10-Inner ring; 20-Outer ring; 30-Flexible film sleeve; 31-Anti-curling support structure; 41-Pawl locking ring; 42-Pawl tooth; 43-Positioning groove; 44-Drive ring; 441-Drive groove; 45-Mounting base; 46-Sliding ring; 47-Sliding column; 48-Rotating ring; 49-First limiting ring; 50-Second limiting ring; 51-Mating lip; 52-Airtight interlocking tooth shape; 53-Slider; 54-Stop box. Detailed Implementation

[0020] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0021] Example: like Figures 1 to 8As shown, this embodiment provides an anti-rollover laparoscopic incision protective sleeve, including: a base assembly having an inner ring 10 and an outer ring 20; a flexible film sleeve 30, sealed between the inner ring 10 and the outer ring 20, with a support portion on the outer side and a channel portion on the inner side; an anti-rollover support structure 31, assembled on the support portion of the flexible film sleeve 30, for maintaining the channel shape of the flexible film sleeve 30; a length locking mechanism, installed on the lower edge of the outer ring 20 and adapted to the flexible film sleeve 30, for limiting the extension length of the flexible film sleeve 30; an airtight opening and closing assembly, integrated on the upper surface of the outer ring 20, for realizing the airtight closing and opening switching of the incision channel; and a redundant sealing structure, disposed on the inner side of the outer ring 20 and located below the airtight opening and closing assembly, for improving the airtight protection effect.

[0022] In this embodiment, both the inner ring 10 and the outer ring 20 of the base assembly are injection molded from polycarbonate material, which combines strength and biocompatibility. The outer ring 20 is divided into different models according to its outer diameter to adapt to surgical incisions of different sizes. The flexible film sheath 30 is made of medical-grade transparent TPU film, which ensures both flexibility and a certain tensile strength. Its connection with the inner ring 10 and the outer ring 20 is achieved by RF high-frequency heat sealing process to achieve a seamless sealing connection and avoid gas leakage and tissue fluid infiltration. The support part of the flexible film sheath 30 is a groove structure on the outer wall, and the channel part is a hollow cavity on the inner side, which are used to assemble the anti-curling support structure 31 and realize the functions of surgical operation and specimen retrieval, respectively.

[0023] Furthermore, the anti-curling support structure 31 is a memory rib, which is arranged at equal intervals along the axial direction of the flexible film sleeve 30. The memory rib is a spiral or ring structure and is embedded in the outer wall of the flexible film sleeve 30. The flexible film sleeve 30 is made of medical-grade transparent TPU film material.

[0024] In this embodiment, the memory ribs are made of thin-walled Nitinol material and are embedded at equal intervals along the axial direction of the flexible film sheath 30 in a ring structure. The shape memory properties and elasticity of Nitinol can provide continuous radial support for the flexible film sheath 30. Even if the sheath is pulled or squeezed, it can quickly recover and unfold, effectively preventing collapse and curling. The transparent design of the flexible film sheath 30 allows the surgeon to easily observe the state of the incision tissue during the operation and detect abnormalities in a timely manner.

[0025] Furthermore, the length locking mechanism is a pawl-type locking ring 41, which is rotatably sleeved on the lower edge of the outer ring 20. The inner wall of the pawl-type locking ring 41 is provided with pawl teeth 42. The end of the flexible film sleeve 30 connected to the outer ring 20 is provided with a positioning groove 43 that meshes with the pawl teeth 42. The pawl-type locking ring 41 achieves circumferential locking through the meshing of the pawl teeth 42 and the positioning groove 43.

[0026] In this embodiment, the pawl-type locking ring 41 is injection molded from PC material, and its inner wall is evenly distributed with pawl teeth 42. The end of the flexible film sleeve 30 connected to the outer ring 20 is provided with an annular positioning groove 43. The depth of the positioning groove 43 is adapted to the tooth height of the pawl teeth 42. During the operation, after adjusting the extension length of the flexible film sleeve 30 according to the thickness of the patient's abdominal wall, the pawl-type locking ring 41 is rotated clockwise to make the pawl teeth 42 engage with the positioning groove 43, thereby locking the sleeve length and preventing the outer ring 20 from accidentally flipping and causing the sleeve to loosen and curl. It can be unlocked by rotating counterclockwise. The operation is convenient and the locking is reliable.

[0027] The extension and retraction along the axial direction corresponding to the length is achieved by setting a drive ring 44, which is fixed to a pawl-type locking ring 41 and rotates coaxially with the drive ring 44 and the pawl-type locking ring 41. Multiple sets of drive grooves 441 are provided on the drive ring 44, each being a spiral groove wound around the side wall of the drive ring 44. At least three sets of spirally distributed drive grooves 441 are provided, and the three sets of spiral grooves are arranged parallel to each other. A sliding ring 46 with a diameter slightly smaller than the drive ring 44 is provided. The sliding ring 46 is a sleeve, and multiple sliding posts 47 are provided on the top of the sliding ring 46, with at least three sliding posts 47. The three sliding posts 47 are correspondingly installed in the drive grooves 441. Rotating the pawl-type locking ring 41 causes the drive ring 44 to rotate clockwise, and the pawl-type locking ring 41 is rotatably installed on the flexible thin... At the rotating outer edge of the membrane sleeve 30, the rotating plane of the pawl-type locking ring 41 is fixed. After rotating the pawl-type locking ring 41, the sliding post 47 on the sliding ring 46, which rotates around the central axis, slides along the drive groove 441. The drive groove 441 drives the sliding ring 46 to move along the axial direction. The drive end of the sliding ring 46 is rotatably fitted with a mounting base 45. A rotating ring 48 is provided on the mounting base 45. Two concentrically arranged limiting rings are provided on the rotating ring 48, namely the first limiting ring 49 and the second limiting ring 50. The first limiting ring 49 corresponds to the groove at the end of the outer ring 20, and the second limiting ring 50 corresponds to the groove at the end of the inner ring 10. A sealing structure is provided at the mounting points of the first limiting ring 49 and the second limiting ring 50, the inner ring 10, and the outer ring 20 to improve the reliability of installation and driving.

[0028] Furthermore, the airtight opening and closing assembly includes a mating lip 51, an airtight meshing tooth 52, a slider 53, and a stop box 54. The mating lip 51 is hot-melt welded to the upper surface of the outer ring 20 to form an arc-shaped opening. The airtight meshing tooth 52 is embedded in the mating surface of the mating lip 51. The stop box 54 is fixed to one end of the arc-shaped opening. The slider 53 is slidably assembled on the airtight meshing tooth 52 and is adapted to the stop box 54.

[0029] In this embodiment, the occlusal lip 51 is a double-layer TPU structure, which is seamlessly connected to the upper surface of the outer ring 20 through ultrasonic welding to form an arc-shaped opening, adapting to the surgical needs of single-handed operation; the airtight occlusal tooth 52 is a TPU-coated wedge-shaped interlocking bead groove, and the non-metallic material avoids metal particles falling off and contaminating the surgical area during the operation; the stop box 54 is integrally injection molded with the outer ring 20, and a slider 53 limiting structure is set inside to ensure that the slider 53 is accurately positioned when it slides to the end; the slider 53 is injection molded with POM material and the surface is frosted to increase the friction during operation and prevent slippage.

[0030] Furthermore, the slider 53 is provided with a pressure wedge inside, which is adapted to the airtight meshing tooth 52 and is used to push the mating lip 51 to achieve pressure sealing. The slider 53 is provided with a self-locking buckle, which is engaged with the stop box 54. One side of the stop box 54 is integrated with an inflation port, and a one-way valve is installed inside the inflation port. The stop box 54 is also reserved with an elastic membrane operation hole.

[0031] In this embodiment, the pressure wedge inside the slider 53 is a triangular wedge structure that matches the tooth shape of the wedge-shaped bead groove. When the slider 53 is pushed, the pressure wedge can squeeze the mating lip 51 and the airtight meshing tooth 52 to fit tightly together, achieving a three-point pressure seal, meeting the sealing requirements under abdominal pneumoperitoneum pressure, and preventing air bubble leakage. The self-locking buckle on the slider 53 is an elastic latch structure that automatically engages when sliding to the stop box 54, preventing accidental slippage during surgery that could lead to seal failure. Pressing the latch unlocks the device. The specific airtight opening and closing component structure can also use a flexible plastic clamp sealing strip instead of the detailed scheme, thereby achieving repeated opening and closing. The inflation interface is a standard Luer male connector structure that meets the pressure resistance requirements. A one-way valve can be installed inside to allow one-way CO2 gas inflow, preventing abdominal gas leakage. It can be directly connected to the pneumoperitoneum tubing to regulate abdominal pressure. The elastic membrane operation port is provided with different specifications to adapt to different sizes of laparoscopic surgical instruments. The elastic membrane is made of medical-grade silicone, which fits tightly when the instrument passes through, maintaining an airtight seal.

[0032] Furthermore, the redundant sealing structure is a silicone diaphragm flap, which is a wiper-shaped structure that covers the opening area of ​​the airtight opening and closing component. The silicone diaphragm flap has a naturally closing micro-opening in the middle and is made of soft medical silicone material.

[0033] Furthermore, the channel portion of the flexible film sleeve 30 includes a main channel and an auxiliary operating hole. The main channel is located at the inner center of the flexible film sleeve 30. An elastic sealing valve is circumferentially fitted on the main channel. The elastic sealing valve is a multi-lobed elastic silicone structure and is in a closed state under natural conditions.

[0034] In this embodiment, the main channel is adapted to a tubular anastomosis device to meet the surgical requirements of laparoscopic gastrointestinal reconstruction; the elastic sealing valve is made of elastic silicone and distributed at the openings of various holes. The valves are connected by an arc transition. In its natural state, it is closed. When the instrument passes through, the valve is squeezed outward by external force and fits tightly against the outer wall of the instrument to achieve dynamic airtightness. After the instrument is removed, the valve automatically retracts and closes due to elasticity.

[0035] Furthermore, an auxiliary positioning structure is provided on the inner side of the flexible film sleeve 30. The auxiliary positioning structure includes an intestinal clamp and an alignment mark line. The intestinal clamp is an elastic silicone snap-fit ​​structure, and the alignment mark line is evenly arranged along the axial and circumferential directions of the flexible film sleeve 30.

[0036] In this embodiment, the intestinal clamp is made of medical-grade silicone and has an elastic snap-fit ​​structure. It is evenly distributed along the inner circumference of the flexible film sleeve 30, which can elastically clamp the intestinal stump, prevent intestinal displacement during the operation, and facilitate the surgeon's intestinal connection operation. The alignment marking line is a line printed with medical-grade ink and is evenly distributed along the axial and circumferential directions. The surgeon can use the marking line to achieve precise alignment of the intestinal stump, improve the accuracy of digestive tract reconstruction, and reduce suturing errors.

[0037] Furthermore, both the inner ring 10 and the outer ring 20 are made of biocompatible rigid material. The edges of the inner ring 10 are rounded. The inner surface of the flexible film sleeve 30 is coated with an antibacterial coating. The connection between the flexible film sleeve 30 and the inner ring 10 and the outer ring 20 is RF high-frequency heat sealing or ultrasonic welding.

[0038] In this embodiment, the edges of the inner ring 10 are rounded to avoid scratching the abdominal wall tissue, intestinal tract, and other tissues during intraoperative placement or traction. The inner surface of the flexible film cannula 30 is coated with a silver ion antibacterial coating, which can effectively inhibit the colonization and reproduction of common pathogens. Combined with the integrated sealing structure, it reduces contamination caused by additional operations such as glove modification, further reducing the risk of postoperative incision infection. The connection between the flexible film cannula 30 and the inner ring 10 and outer ring 20 ensures a firm connection without gaps, preventing gas leakage and tissue fluid infiltration.

[0039] Furthermore, the occlusal lip edge 51 has a double-layer TPU structure, the airtight occlusal tooth shape 52 is a TPU-coated wedge-shaped interlocking bead groove, the circumferential angle of the arc-shaped opening is adapted to the surgical operation requirements, and the slider 53 is injection molded from POM or PC material.

[0040] In this embodiment, the double-layer TPU structure of the occlusal labial edge 51 is made by co-extrusion molding. The inner layer is soft TPU to ensure fit, and the outer layer is hard TPU to ensure structural strength, taking into account both sealing effect and smooth operation. The wedge-shaped bead groove of the airtight occlusal tooth 52 ensures the sealing effect after compression. The arc-shaped opening provides sufficient space for the surgeon to operate with one hand, while ensuring the sealing range of the opening. The slider 53 is made of a suitable material and has good performance, meeting the surgical needs of switching between open and sealed states multiple times during the operation.

[0041] In summary, this invention patent, by embedding a nickel-titanium memory rib on the outer side of the flexible thin-film cannula 30, combined with the length locking function of the pawl-type locking ring 41, achieves stable maintenance of the cannula channel shape, effectively solving the technical problem of easy curling and collapse of traditional products, and ensuring the smoothness of the surgical operation channel; by integrating an openable and closable airtight component on the outer ring 20, it achieves rapid airtight and open switching of the incision channel; by setting a redundant sealing structure of a wiper-shaped silicone diaphragm flap, it achieves double-layer airtight protection, effectively improving the reliability of pneumoperitoneum maintenance and preventing abdominal gas leakage from affecting the surgical field; by setting a large-diameter main channel with an elastic sealing valve on the inner side of the flexible thin-film cannula 30, it adapts to... The operation of large instruments such as tubular anastomotic devices, and the dynamic airtightness achieved during instrument passage, meet the surgical requirements of laparoscopic gastrointestinal reconstruction. The auxiliary positioning structure, featuring intestinal clamps and alignment markers, enables precise docking and fixation of the intestinal ends, improving the accuracy and efficiency of gastrointestinal reconstruction. Coating the inner surface of the flexible film cannula 30 with a silver ion antibacterial coating, combined with an integrated sealing structure, reduces contamination, effectively lowering the risk of postoperative incision infection and enhancing surgical safety. The selection of biocompatible materials and the rounded corner transition of the inner ring 10 minimizes tissue damage during surgery, improving the product's clinical comfort and safety.

[0042] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope described in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A protective sleeve for preventing the curling of laparoscopic incisions, characterized in that, include: The base assembly has an inner ring (10) and an outer ring (20); a flexible film sleeve (30) is sealed between the inner ring (10) and the outer ring (20), with a support portion on the outer side and a channel portion on the inner side; an anti-curling support structure (31) is assembled on the support portion of the flexible film sleeve (30) to maintain the channel shape of the flexible film sleeve (30); a length locking mechanism is installed on the lower edge of the outer ring (20) and adapted to the flexible film sleeve (30) to limit the extension length of the flexible film sleeve (30); an airtight opening and closing assembly is integrated on the upper surface of the outer ring (20) to realize the airtight sealing and opening switching of the cut channel; and a redundant sealing structure is set on the inner side of the outer ring (20) and located below the airtight opening and closing assembly to improve the airtight protection effect.

2. The anti-rolling laparoscopic incision protective sleeve according to claim 1, characterized in that, The anti-curling support structure (31) is a memory rib. The memory ribs are arranged at equal intervals along the axial direction of the flexible film sleeve (30). The memory ribs are spiral or ring-shaped structures and are embedded in the outer wall of the flexible film sleeve (30). The flexible film sleeve (30) is made of medical-grade transparent TPU film material.

3. The anti-rolling laparoscopic incision protective sleeve according to claim 2, characterized in that, The length locking mechanism is a pawl-type locking ring (41). The pawl-type locking ring (41) is rotatably sleeved on the outer edge of the flexible film sleeve (30). The inner wall of the pawl-type locking ring (41) is provided with a positioning groove (43). The end of the flexible film sleeve (30) connected to the pawl-type locking ring (41) is provided with pawl teeth (42) that mesh with the positioning groove (43). The pawl-type locking ring (41) achieves circumferential locking through the meshing of the pawl teeth (42) and the positioning groove (43).

4. The anti-rolling laparoscopic incision protective sleeve according to claim 3, characterized in that, The airtight opening and closing assembly includes a mating lip (51), an airtight meshing tooth (52), a slider (53), and a stop box (54). The mating lip (51) is hot-melt welded to the upper surface of the outer ring (20) to form an arc-shaped opening. The airtight meshing tooth (52) is embedded in the mating surface of the mating lip (51). The stop box (54) is fixed to one end of the arc-shaped opening. The slider (53) is slidably assembled on the airtight meshing tooth (52) and is adapted to the stop box (54).

5. The anti-rolling laparoscopic incision protective sleeve according to claim 4, characterized in that, The slider (53) is provided with a pressure wedge inside, which is adapted to the airtight meshing tooth shape (52) and is used to push the mating lip (51) to achieve pressure sealing. The slider (53) is provided with a self-locking buckle, which is engaged with the stop box (54). The stop box (54) has an integrated inflation port on one side, and a one-way valve is installed inside the inflation port. The stop box (54) also has a reserved elastic membrane operation hole.

6. The anti-rolling laparoscopic incision protective sleeve according to claim 5, characterized in that, The redundant sealing structure is a silicone diaphragm flap, which is a wiper-shaped structure that covers the opening area of ​​the airtight opening and closing component. The silicone diaphragm flap has a naturally closing micro-opening in the middle.

7. The anti-rolling laparoscopic incision protective sleeve according to claim 6, characterized in that, The channel portion of the flexible film sleeve (30) includes a main channel and an auxiliary operating hole. The main channel is located at the inner center of the flexible film sleeve (30). An elastic sealing valve is circumferentially fitted to the main channel. The elastic sealing valve is a multi-lobed elastic silicone structure and is in a closed state under natural conditions.

8. The anti-rolling laparoscopic incision protective sleeve according to claim 7, characterized in that, The inner side of the flexible film sleeve (30) is also provided with an auxiliary positioning structure, which includes an intestinal clamp and an alignment mark line. The intestinal clamp is an elastic silicone snap-fit ​​structure, and the alignment mark line is evenly arranged along the axial and circumferential directions of the flexible film sleeve (30).

9. A protective sleeve for preventing the curling of laparoscopic incisions according to claim 8, characterized in that, The inner ring (10) and the outer ring (20) are both made of biocompatible rigid material. The edge of the inner ring (10) is rounded. The inner surface of the flexible film sleeve (30) is coated with an antibacterial coating. The connection between the flexible film sleeve (30) and the inner ring (10) and the outer ring (20) is RF high-frequency heat sealing or ultrasonic welding.

Images