224 results about "Laparoscopes" patented technology

The invention discloses a positioning device for uterus suspension under a single-port laparoscope, and belongs to the technical field of medical instruments. Comprising a posture adjusting assembly and a suspension assembly, and the suspension assembly is arranged on the posture adjusting assembly; the suspension assembly comprises a circular mounting plate arranged above the posture adjusting assembly, an arc-shaped ring is arranged on the edge of the circular mounting plate, a plurality of lifting ropes are arranged on the arc-shaped ring, one ends of the lifting ropes penetrate through the arc-shaped plate, the other ends of the lifting ropes are downwards suspended, a supporting plate is arranged on the lower portion of the posture adjusting assembly, and the supporting plate is arranged on the lower portion of the posture adjusting assembly. One end of the supporting plate is fixed to the posture adjusting assembly, a plurality of guide plates are arranged at the other end of the supporting plate, one ends of the guide plates are connected to the supporting plate, guide rings are arranged at the other ends of the guide plates, and the other ends of the lifting ropes are located in the guide rings. According to the technical scheme, the uterus suspension positioning device is used for conducting suspension positioning on the uterus so as to expose the operation view, and meanwhile the problem that an abdominal incision is extruded in the suspension positioning process is avoided.

The invention discloses a laparoscopic surgery image enhancement and real-time auxiliary system, and relates to the technical field of medical image processing and intelligent auxiliary surgery. According to the laparoscopic surgery image enhancement and real-time auxiliary system, a laparoscopic image flow is obtained and cleaned through the video input and preprocessing module, image enhancement processing is carried out through a deep learning model, then spatial position features of a tissue structure and an instrument are extracted, and a structure recognition index and a spatial safety index are analyzed; according to the invention, through cooperative work of the image preprocessing module and the depth image enhancement model, brightness compensation, edge enhancement, denoising, smoke suppression and other operations are performed on the laparoscope image stream, the depth model is utilized to extract multi-scale image features and reconstruct details, and an enhanced video image stream is generated; therefore, the intraoperative abdominal cavity structure and instrument boundary is clearer, the positioning judgment precision of a doctor is remarkably improved, and the misjudgment risk caused by image blurring is reduced.

The application provides a laparoscope reciprocating suture device middle wire guide intermittent release mechanism, the suture device comprises a curved needle mounting block, the curved needle mounting block is provided with a curved needle groove, a curved needle is movably arranged in the curved needle groove, the curved needle performs curve movement along the curved needle groove, the curved needle mounting block is provided with a first opening and a second opening, the first opening is located at the front end of the curved needle groove, the second opening is movably connected with a wire guide, the wire guide is connected with a suture wire, and the intermittent release mechanism is arranged at the position of the second opening.The wire guide is limited or released, the wedge-shaped teeth between the rotating buckle and the rotating buckle base, the reset spring and the two-face cutting flange are arranged, so that the curved needle automatically and intermittently draws out the wire guide from the second outlet and separates from the wire guide when reciprocating, the wire guide remains in the second outlet position, manual operation is not required for releasing the wire guide or limiting the wire guide each time, the order of suture wire routing is ensured, and the reliability and convenience of surgical suturing are improved.

A novel integrated wound closure device for laparoscopy having an elongated body with a distal end and proximal end able to-use suture for closing surgical port wounds comprising a single sequential proximal activation means able to operate multiple internal systems sequentially such as: a distal anchoring system, a self-contained tissue piercing system, a suture staging means to position suture suitable for capture at a target zone, and a suture capturing system to capture and retract suture into said piercing system with all system functions configured internally of said elongated body which can be reused multiple times per patient.

The utility model relates to a magnetic anchoring auxiliary stop lever used under a laparoscope, which belongs to the field of medical instruments and comprises an outer magnet positioned outside an abdominal cavity and an inner magnet positioned in the abdominal cavity, the inner magnet can be attracted with the outer magnet, and a telescopic stop lever used for stopping organ tissues is fixedly arranged on one side of the inner magnet far away from the outer magnet. The telescopic end of the telescopic stop lever is provided with a fixing part used for being connected with tissues in the abdominal cavity. The device has the advantages that one end of the telescopic stop lever is fixed on the abdominal cavity tissue, the other end of the telescopic stop lever is controlled to move in vitro through the outer magnet, the organ tissue is blocked and pushed to adjust the position through the telescopic stop lever, the operation view is exposed, and operation is easy; meanwhile, the telescopic stop lever is passively telescopic to adapt to abdominal cavity spaces with different distances, so that the flexibility is higher.

A surgical access device, such as in the form of a Veress needle or trocar / obturator, for use in providing access to a patient in a surgical setting is disclosed. The surgical access device incorporates one or more sensors to provide real-time data usable to evaluate an insertion position of the surgical access device and provide feedback to a live user or robotic insertion device. Additionally, a system and method for adjusting the flow of insufflation gas based on the real-time data and a sensed pressure at the surgical access device is described.

The application discloses a single-hole laparoscopic cholecystectomy method and relates to the technical field of laparoscopy application, S1: a patient is given general anesthesia by air insertion, a belly navel turning-over technique is used to establish an operation hole at the navel, and a single-port multi-channel puncture device is arranged; S2: a 30-degree straight laparoscope lens, a curved blood vessel clamp, a non-injury grabbing clamp, an ultrasonic knife, an electric coagulation hook and other conventional surgical instruments used in multi-hole laparoscopic cholecystectomy are used, a Cross Hand method is adopted to enter the surgical instrument, the bottom of a gallbladder is lifted by the non-injury grabbing clamp, and a gallbladder triangle is exposed. If the gallbladder triangle is shielded by liver Ⅲ or Ⅳb in this step, the visual field cannot be completely exposed, and a liver traction device needs to be used to assist in exposing the visual field of the gallbladder triangle. The application always keeps the same traction force on the liver, avoids the problem that the traction force of the liver is insufficient to cause unclear visual field with the cutting of the gallbladder being deepened, better exposes the surgical visual field of the gallbladder triangle, reduces the operation time and improves the operation safety.

A method of deploying an intraluminal device to the cardiac region of the stomach and an intraluminal system used to deploy an intraluminal device to the cardiac region of the stomach, wherein the intraluminal device has a wall defining a surface and an open portion of the surface that is adapted to be aligned with the gastroesophageal (GE) junction. The surface and the cardiac portion of the stomach are conformable with each other. The method includes deploying the intraluminal device trans-orally to the stomach with an endoscopic deployment device and retaining the device against the cardiac region of the stomach with the open portion generally aligned with the GE junction. The intraluminal device is fastened to the stomach from the abdominal cavity with at least one laparoscopic instrument while concurrently visualizing the device with an endoscope in the stomach while it is being fastened. The laparoscopic instrument is adapted to respond to the endoscope in order to adjust location between the laparoscopic instrument and intraluminal device while the laparoscopic instrument is fastening the intraluminal device.

The abdominal wall retractor for the observation hole of the laparoscope comprises a first retraction arm and a second retraction arm, the first retraction arm and the second retraction arm are hinged through a hinged shaft, and the first retraction arm comprises a first retraction arm front section, a first retraction arm middle section and a first retraction arm rear section. The end part of the rear section of the first retraction arm is fixedly connected with a first operation ring; the second retraction arm comprises a second retraction arm front section, a second retraction arm middle section and a second retraction arm rear section, the end part of the second retraction arm rear section is fixedly connected with a second operation ring, and the end part of the first retraction arm front section is movably connected with a first retraction rod and a second retraction rod; and the end part of the front section of the second retracting arm is movably connected with a third retracting rod and a fourth retracting rod. The utility model has the beneficial effects that the abdominal wall of the observation hole and the subcutaneous fat layer can be expanded, and the anterior sheath layer and the peritoneal layer can be better exposed, so that the peritoneal layer and the anterior sheath layer can be better sutured under direct vision, related complications of a puncture hole are avoided, the use is safe and reliable, and the operation time of medical personnel is saved.

The invention discloses a laparoscopic cholecystectomy superfine auxiliary instrument and relates to the technical field of medical instruments, the laparoscopic cholecystectomy superfine auxiliary instrument comprises a handle, a superfine puncture part and a head, the superfine puncture part comprises an outer sleeve and a puncture needle, the two ends of the outer sleeve are connected with the handle and the head respectively, the puncture needle is arranged in the outer sleeve, and the front end of the puncture needle is provided with a puncture tip; the handle controls the puncture needle to slide back and forth so as to control the opening and closing of the head part. According to the scheme, ultramicro-invasive puncture is achieved through the detachable head and the superfine puncture part, firstly, the superfine puncture part can conduct ultramicro-invasive opening on the abdomen of a patient through the puncture tip at the front end of the puncture needle, so that the superfine puncture part enters the abdominal cavity of the patient, and then the superfine puncture part penetrates out of the body of the patient under the guide of a converter of an umbilical laparoscope opening; the head assembly is accurately completed under in-vitro direct vision, then the head assembly is returned to the abdomen of a patient to complete an operation, and under the condition that the opening and closing distance and the clamping force of the head are proper, ultramicro-wound trepanning is completed, postoperative scars are eliminated, and the pain of the patient is relieved.

A double-needle bidirectional barb surgical suture with a buckle ring in the middle comprises a single suture, suture needles are arranged at two ends of the suture, barb suture bodies on two sides of the suture are respectively provided with barbs with barbs pointing to the middle, the buckle ring is arranged in the middle of the barb suture bodies, and the barb suture bodies are made of absorbable materials. After the sutured first needle is used for suturing the tissue, the suture needle on one side penetrates into the buckling ring and then is tensioned, so that the first needle is used for suturing the tissue and is locked, and tissue damage caused by excessive traction of the barb line on the other side of the buckling ring towards the barb opening direction in the traction process when the suture needles on the two sides are continuously used for suturing the tissue subsequently can be avoided; by means of the device, the suture line can be conveniently pulled to twist the intestinal canal in the surgical anastomosis operation process of the gastrointestinal tract, so that an operation operator can conveniently suture the lateral and dorsal intestinal walls, and the gastrointestinal tract operation, especially the gastrointestinal tract anastomosis under a laparoscope, can be facilitated.

The invention relates to a disposable multichannel cervical and thoracic laparoscope puncture outfit and an installation method thereof, the disposable multichannel cervical and thoracic laparoscope puncture outfit comprises an incision protection sleeve and an elastic bag sleeve extending out of the incision protection sleeve, and the end, located in the incision protection sleeve, of the elastic bag sleeve and a thin film sleeve of the incision protection sleeve are of an integrated structure; the outer end of the elastic bag sleeve extends towards different angles to form a plurality of finger parts with different lengths, the tail end of each finger part is fixedly connected with a channel sleeve, and the interiors of the channel sleeves are communicated with the interiors of the corresponding finger parts. The disposable multi-channel cervical-thoracic laparoscope puncture outfit is simple in structure, convenient to install, capable of reducing manufacturing cost, capable of improving operation efficiency, capable of improving the degree of freedom of the operation, capable of reducing instrument interference, capable of improving operation flexibility, operation efficiency and safety and easy to popularize. A nurse can take out a specimen without influencing the air tightness of an operation cavity, an operator does not need to take out the specimen through an instrument channel, the operation continuity is improved, and the problem of operation interruption caused by specimen taking out in the prior art is solved.

To provide a surgery appliance which is used in an endoscopic surgical operation such as a single hole-type abdominoscope operation, and can change an insertion point of an endoscope in a shorter time without greatly changing a relative positional relation between the endoscope and a forceps.SOLUTION: A surgery appliance (10) to be attached to a ring-shaped retractor attached to an incision includes: a cylindrical part (11) having an inner diameter larger than an inner diameter of the incision held by the retractor; and a flat plate-like insertion part (12) provided at a top edge of the cylindrical part (11). A bottom edge of the cylindrical part (11) is a connection portion (13) for attaching to the retractor, and the cylindrical part (11) has flexibility to be freely deformable.SELECTED DRAWING: Figure 1

1. Name of the product in this design: Anastomosis device (inserted fully endocavitary electrically powered tubular type - straight). 2. Application of this design: for laparoscopic anastomosis of esophagus and jejunum, intestine to intestine, or thoracoscopic anastomosis of esophagus and jejunum or esophagus and stomach within the thoracic cavity. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D view 1. 5. Other situations requiring explanation: Part A is made of transparent material.

The specimen taking-out device comprises a pipe sleeve, a push-out plate is connected into the pipe sleeve in a sliding mode, an object taking unit is fixed to the push-out plate, and when the push-out plate and the pipe sleeve move relatively, the push-out plate drives the object taking unit to stretch out of the pipe sleeve; the object taking unit comprises an object taking bag and an opening part used for fixing a bag opening of the object taking bag. An angle adjusting assembly is fixed to the push-out plate and connected with the opening part, and the angle adjusting assembly is used for changing the opening degree of the opening part. The utility model solves the problems that the supporting part is unsmooth to open, and the supporting force of the supporting part is insufficient and is easy to deform.

The invention relates to a device for performing laparoscopy, comprising a first lifting unit 30 for lifting the abdominal wall of a patient P, which is suitable for insertion into the abdominal cavity of a patient, wherein the first lifting unit 30 comprises an insertion channel from the proximal end 32 of the first lifting unit 30 to the distal end 33 of the first lifting unit 30, and a second lifting unit 40 for lifting the abdominal wall of a patient P. The second lifting unit 40 comprises an inflatable support section 44, which is suitable for fixing at least one fixation section 35 of the first lifting unit 30 to the inner surface of a patient's abdominal wall.

A workspace device comprising: (a) a workspace body having a workspace inner wall defining an internal volume, including one or more expandable segments, said workspace body is: collapsible to a collapsed state where said body fits through a laparoscopic passageway in an abdominal wall, which passageway extends to an abdominal cavity; and expandable, to increase said internal volume, to an expanded state within said cavity, where, in said expanded state said workspace body: has an opening to said internal volume; and extends axially from a proximal to a distal direction defining a workspace axis; (b) one or more channels sized and shaped to supply inflation fluid to said workspace body; (c) said workspace body including: a plurality of circumferentially extending inflatable segments; a fluid pathway connecting at least one of said one or more channels to at least one of said segments.

The invention discloses a gynecological laparoscopic surgery uterus manipulator fixing system, which relates to the technical field of medical instruments and comprises a bearing mechanism, a limiting mechanism, a longitudinal mechanism and an adjusting mechanism, the bearing mechanism comprises a base and a bearing assembly arranged on the base, and the bearing assembly is rotationally connected with the base; the limiting mechanism comprises a clamping assembly arranged on the base and a plurality of limiting grooves formed in the bearing assembly, and the clamping assembly enters the limiting grooves to limit rotation of the bearing assembly; the longitudinal mechanism comprises a vertical rod arranged on the bearing assembly and a uterus manipulator connecting assembly arranged on the vertical rod, the vertical rod can stretch out and draw back, and the uterus manipulator connecting assembly is used for being connected with a uterus manipulator; the adjusting mechanism comprises an adjusting groove and an adjusting assembly which are arranged on the base, the adjusting assembly is in sliding connection with the adjusting groove, and the adjusting assembly can drive the bearing assembly to rotate. According to the multi-degree-of-freedom adjustable uterine manipulator, stable holding and multi-degree-of-freedom flexible adjustment of the intraoperative uterine manipulator are synchronously considered, the labor cost is saved, and the adjustment time is shortened.

1. The name of the design product: cannula (abdominal surgery). 2. The use of the design product: the design product is used to establish a surgical channel during laparoscopy and surgery. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention provides an auxiliary retractor for laparoscopic surgery, and belongs to the technical field of medical instruments. Comprising a drag hook body, a notch is formed in an inner cavity of the top of the drag hook body, a suction opening is fixedly connected to the end of the drag hook body, and an L-shaped connecting frame is fixedly connected to the end of an inclined supporting frame; the supporting and stabilizing assembly is used for enhancing the stability of the drag hook body and tissues in the skin, and the supporting and stabilizing assembly is connected with the drag hook body. By arranging the supporting and stabilizing assembly, when making contact with tissue in the skin, the drag hook body makes contact with the supporting and stabilizing assembly, the drag hook body is lifted upwards and attached to the tissue in the skin, shaking of a doctor to the tissue in the skin during surgical operation can be relieved, the situation that tissue fluid is squeezed and overflows is reduced, and outflow of a large amount of tissue fluid is reduced; clear view during an operation is ensured, and operation hidden dangers caused by view problems are reduced.

The invention belongs to the technical field of laparoscope retractors, and particularly relates to an automatic tracking type intelligent laparoscope retractor based on surgical field recognition, which comprises a retraction cylinder, a flexible retraction cover, a filling assembly and a traction assembly are arranged in the retraction cylinder, and the traction assembly comprises a traction rod. The traction rod is movably connected with the flexible traction cover and adjusts the opening and closing state of the flexible traction cover, the filling assembly communicates with the flexible traction cover and is used for adding filler into the flexible traction cover, and the filler is added into the flexible traction cover from the tail end and gradually extends upwards for filling. The flexible retraction cover is arranged in the retraction cylinder, so that the flexible retraction cover is gradually expanded outwards from a folded state in the retraction cylinder and is converted into an unfolded state for supporting the abdominal cavity, the non-return assembly is arranged in the retraction cylinder, a non-return groove is formed in the inner wall of the retraction cylinder, and the non-return groove is communicated with the non-return assembly. The plurality of arc-shaped hollow frameworks of the flexible retraction cover are propped against and extruded on the non-return groove by the non-return assembly; a stable and open optical operation space can be created and maintained for the operation of the laparoscope.

The invention provides a hepatobiliary surgery laparoscope pneumoperitoneum pressure and anesthesia ventilation combined regulation and control device, and relates to the technical field of laparoscopic surgery equipment. Comprising a connector, the top of the connector is provided with a connecting port, a pressure cavity is arranged in the connector, and one side of the pressure cavity is connected with a measuring cavity; a first sliding plate is arranged in the measuring cavity, a reset spring is arranged on one side of the first sliding plate, and the inner diameter of the measuring cavity is smaller than that of the pressure cavity; a sealing ring is arranged on the inner side of the connecting opening, and the cross section of the sealing ring is arranged in a U shape. Compared with the prior art, the pneumoperitoneum pressure control device is simple in structure, convenient to use and capable of effectively and stably controlling and adjusting pneumoperitoneum pressure.

This invention relates to a laparoscopic surgery simulation trainer, comprising an abdominal cavity simulation device, a laparoscopic simulation device, and a display screen. The abdominal cavity simulation device includes a housing and a monitoring rod. The housing is open at the front, and a partition separates the housing into a front simulation cavity and a rear power cavity. An abdominal cavity simulation layer is disposed within the simulation cavity, and the abdominal cavity simulation layer is tubular, made of flexible rubber. A camera is mounted at one end of the monitoring rod and located in the simulation cavity, and the other end is located in the power cavity. A light source is provided at the operating end of the laparoscopic simulation device. A circular tubular mounting sleeve is arrayed within the interlayer between the abdominal cavity simulation layer and the housing. The abdominal cavity simulation layer has multiple through holes evenly distributed around the axis of the mounting sleeve, and multiple photosensitive sensors are evenly distributed on the inner wall of the mounting sleeve. The purpose of this invention is to solve or at least alleviate the problem of difficulty in viewing the operation process and results within the abdominal cavity in current transvaginal laparoscopic surgery simulation devices, and to provide a laparoscopic surgery simulation trainer.

The puncture core comprises a puncture rod, a fixing base, a puncture head, a cutting edge and a driving part, the fixing base is fixedly arranged at the upper end of the puncture rod, the upper end of the puncture head is fixedly connected with the lower end of the puncture rod, the tip end of the puncture head faces downwards, a cavity is formed in the puncture head, and the two opposite side faces of the puncture head are sunken inwards to form mounting holes communicated with the cavity. The number of the cutting edges is two, the two cutting edges are in sliding fit in the two mounting holes in a one-to-one correspondence and horizontal sliding mode, the driving part is arranged in the puncture rod and the fixing base, the driving part is used for fixing the two cutting edges to the puncture head, and the driving part is further used for driving the two cutting edges to move inwards so that the outer edges of the cutting edges can move to the inner side of the outer surface of the puncture head. Due to the adoption of the technical scheme, the puncture core can reduce the possibility that a worker accidentally touches a cutting edge and is injured, and can reduce the possibility of cross infection. The invention further relates to a gastrointestinal surgery laparoscope puncture outfit which comprises the puncture core.

The invention provides a laparoscope data processing method and system, relates to the technical field of data processing, and aims at outputting and interacting laparoscope data based on forms such as natural language processing, interacting according to the requirements of doctors, realizing preoperative identification of operators, and improving the accuracy of laparoscope data processing. The system is automatically converted into image modes for habits of an operator, including brightness, saturation, focal length and the like. The blood vessel or the ureter can be recognized based on the fact that the special spectrum can be combined with typed cells or tracers in the blood vessel or the ureter, blood vessel damage can be avoided as much as possible by recognizing the blood vessel, intraoperative bleeding is reduced, and the ureter damage probability can be reduced by recognizing the ureter. The method can obtain the abdominal cavity image collected by the laparoscope, determines the tissue characteristics of each tissue catheter based on the abdominal cavity image, the tissue characteristics comprise the tissue trend and the tissue diameter, determines the organ information of the recognition object, can perform point location recommendation and determine the tissue type according to the data collected by the laparoscope, and improves the judgment efficiency and accuracy of the user.

Disclosed is a computer-implemented method of determining an entry region for inserting elongated medical instruments such as trocars or laparoscopes into an anatomical body part such as the abdomen. The determination is made on the basis of a patient image and a known or assumed geometry of the medical instruments and a known position of the target region, and risk structures which shall be avoided by the medical instrument are determined either by user interaction from the patient image or automatically by matching the patient image with an atlas defining the position of such risk structures in an image-based model of the anatomical body part. On the basis of the position of the determined entry region, a robotic device may be controlled to attain a position which is suitable for automatic insertion of the medical instruments into the anatomical body part.

Systems, devices, and methods for laparoscopic closure of abdominal wall defects by placement of one or more self-locking tourniquets. The tourniquets can include a toothed portion that can be cinched within a lock head of the tourniquet. The tourniquets can be initially placed intraperitoneally, which can be suitable for use with robotic surgical instruments. A fully tensioned tourniquet can be translated (or axially rotated) to move the lock head out of the abdominal cavity, to a second location within or in front of the abdominal wall and outside of the abdominal cavity, thereby avoiding complications such as bowel perforation, organ laceration, blood vessel rupture, and increased adhesion formation due to the presence of a large profile lock head in the abdominal cavity. Once the lock head is in the second location, the lock head can be embedded in the surrounding tissue to resist potential rotational migration of the tourniquet over time.

This invention discloses an anti-slip puncture hook for high ligation of pediatric hernia sacs, relating to the field of small household appliance technology. It aims to solve the problems of easy slippage of ligation sutures, cumbersome operation, uncontrollable suture release, and the inability to actively clamp within the extremely thin needle body. The key technical points are: a hand handle, a slender hollow needle body, and a puncture assembly. This invention connects the first and second needle cores through an elastic layer, and with the cooperation of a pressing and opening / closing structure, it can achieve stable opening and closing clamping functions within a needle body with an extremely small diameter. It eliminates the need for complex hinge and linkage structures, resulting in low processing difficulty and high reliability. Through the cooperation of the squeezing block and the conical separation groove, the axial pressing force can be smoothly converted into the radial opening force of the needle core. After releasing the pressing, the elastic layer automatically drives the needle core to close. The operation is intuitive and simple; the doctor can complete all operations with just one hand holding the handle, without the need for laparoscopic instruments or special techniques, reducing the risk of peritoneal abrasion from the laparoscope.

The utility model discloses an isolation supporter used in laparoscopic surgery, which comprises a supporting part, the supporting part is of a hollow cone structure, the supporting part is arranged on a base plate, and a mounting port is provided with a lifting structure for continuously supporting the liver or kidney; the lifting structure comprises a lifting pad, and an adjusting assembly used for lifting the lifting pad is arranged on the chassis. The adjusting assembly comprises a ball screw, the ball screw is rotationally arranged in the mounting frame, a nut seat is arranged on the ball screw, and the nut seat is connected with the lifting pad through a scissor fork type connecting rod structure; the supporting part is further provided with a rotating structure used for controlling the rotating direction of the ball screw, the supporting device can be conveniently and accurately placed on the lower side of the liver or the kidney, stable supporting force can be provided for the liver or the kidney, the supporting force cannot be affected when an instrument is used for an operation, and it is guaranteed that the laparoscopic operation is conducted safely.

The utility model generally relates to the technical field of medical instruments, in particular to a laparoscope liver lifting device which comprises an air bag seat, an air pipe and an air bag column. One end of the air pipe is connected with the airbag seat; the multiple air bag columns are arranged on the air bag seat, and the air bag columns communicate with the air bag seat. The air bag seat and the air bag column can be compressed in a non-inflated state so as to enter a body through a minimally invasive wound of a patient; the air bag seat and the air bag column can support the liver in an inflation state, a certain space is formed between the liver and the abdominal wall, the abdominal wall moves upwards under the minimally invasive pneumoperitoneum condition, the space is increased, the air bag seat abuts against the abdominal wall, the air bag column is located under the liver, along with the increase of the inflation amount, the weight of the liver acts on the air bag column on one hand and acts on the air bag seat on the other hand, and the placement stability is improved; moreover, gaps exist between the air bag columns, a good operation space is provided, an ultrasonic knife, operating forceps and the like can directly penetrate through the air bag columns conveniently, and operation is facilitated.