Gastrointestinal lifting device for laparoscope in general surgery department

Abstract

The invention relates to the technical field of medical instruments, in particular to an intestine and stomach lifting device for a laparoscope in the general surgery department, which comprises a clamping frame, a lifting support block is slidably connected to the clamping frame, a telescopic cylinder is fixedly connected to the bottom of the lifting support block, a locking assembly is arranged on the telescopic cylinder, and a clamping jaw assembly is arranged at the bottom end of the telescopic cylinder; the clamping jaw assembly comprises a clamping seat and a plurality of finger branches, the finger branches are elastic colloidal silica bodies, a plurality of air chambers and interlayers are arranged in the finger branches, a plurality of negative pressure pipes are arranged on the finger branches, and an air pump assembly is arranged at the bottom of the lifting supporting block; a button assembly is arranged on the surface of the telescopic cylinder piece and is in signal connection with the controller. The flexible clamping jaw made of the elastic silica gel material is adsorbed on the contact surface of the clamping jaw and the gastrointestinal tissues in combination with negative pressure, so that flexible adaptation and dynamic stable lifting of the gastrointestinal tissues with different anatomical sizes are realized, and the problems of size mismatching and tissue damage caused by immobilization parameter design are solved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a gastrointestinal lifting device for general surgical laparoscopy. Background Technology

[0002] The laparoscopic gastrointestinal traction device is a medical device specifically designed for laparoscopic minimally invasive surgery. It is used to precisely lift, pull, or fix hollow organs such as the stomach and intestines within the abdominal cavity to expose the surgical field, create operating space, and assist doctors in completing key steps such as tissue separation, resection, and anastomosis.

[0003] Currently, clinically used gastrointestinal lifting devices are mainly divided into two categories based on their tissue fixation mechanisms: one is the negative pressure adsorption type gastrointestinal lifting device (such as the negative pressure gastrointestinal lifting device for laparoscopic surgery disclosed in Chinese Patent Publication No. CN116439853A), which uses the adsorption force generated by negative pressure to act on the surface of gastrointestinal tissue, forming a stable fixation interface to achieve lifting and displacement; the other is the mechanical hook type lifting device (such as the gastrointestinal lifting device for general surgery laparoscopy disclosed in Chinese Patent Publication No. CN222604609U), which uses rigid or semi-rigid hooks with specific geometric configurations to directly hook onto the gastrointestinal wall tissue, using mechanical hooking force to complete the lifting and position adjustment of the tissue. The common goal of both types of devices is to assist in exposing the surgical field and constructing the operating space in laparoscopic surgery.

[0004] Existing laparoscopic gastrointestinal traction devices for general surgery generally employ fixed geometric parameter designs (such as mechanical traction hooks and negative pressure suction surfaces) at their traction execution ends, without taking into account the individualized anatomical differences in the patient's abdominal tissues. Specifically, the intestinal diameter in children is typically 1.0–2.0 cm, while in adults it can reach 3.0–5.0 cm. Obese patients experience further size differences due to abdominal fat accumulation and thickened gastrointestinal walls (20%–40% thicker than normal adults). This mismatch between the size parameters and the target tissue can lead to insufficient traction stability (e.g., a small-diameter suction surface forming "point contact" with a large-diameter intestinal segment, causing slippage) or mechanical tissue damage (e.g., excessive compression of the thin intestinal wall by a large-curvature hook or mucosal ischemia caused by an excessively large suction surface diameter). Therefore, there is an urgent need to develop a laparoscopic gastrointestinal traction device for general surgery with individualized size adaptation capabilities, capable of matching the tissue anatomical characteristics of different patients, ensuring the stability of the traction operation while reducing the risk of mechanical tissue damage. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a gastrointestinal lifting device for general surgical laparoscopy. Utilizing flexible grippers made of elastic silicone material, combined with negative pressure adsorption at the contact surface between the grippers and gastrointestinal tissue, it achieves flexible adaptation and dynamic, stable lifting of gastrointestinal tissues of varying anatomical sizes. This resolves the issues of size mismatch and tissue damage caused by fixed parameter design. To achieve the above objectives, the technical solution of the present invention is as follows: a gastrointestinal lifting device for general surgical laparoscopy, comprising a clamping frame for clamping and supporting the side of the operating table, a lifting support block slidably connected to the clamping frame, a telescopic cylinder fixedly connected to the bottom of the lifting support block, a locking component for locking the telescopic length on the telescopic cylinder, and a claw component at the bottom end of the telescopic cylinder. The gripper assembly includes a gripper base and several finger branches that are uniformly fixedly connected circumferentially along the midpoint of the gripper base. Each finger branch is made of elastic silicone. Several air chambers and partitions are alternately opened along the axial direction of each finger branch. Symmetrical air passages are opened on each partition, and each air passage is used to connect adjacent air chambers. Several negative pressure pipes corresponding to the positions of the partitions are provided on each finger branch. The negative pressure pipes are perpendicular to the air passages and pass through the finger branches. The bottom of the lifting support block is also provided with an air pump assembly for pumping gas flow. Several negative pressure pipes are connected to the input end of the air pump assembly, and several finger branches are connected to the output end of the air pump assembly. The air pump assembly is signal connected to a controller. The surface of the telescopic cylinder is equipped with a button assembly for pressing a signal to start or stop the air pump assembly. The button assembly is connected to the controller signal.

[0006] The technical principle of the above solution is as follows: The clamping frame is fixed to the side of the operating table to provide support and fixation force for the lifting support block, that is, the support part during the lifting process; the telescopic cylinder connected to the lifting support block has an adjustable length and is fixed by a locking component to realize the adjustment of the lifting height during the lifting process; the gripper assembly at the bottom of the telescopic cylinder has an elastic finger branch design to contact the gastrointestinal tissue; the air pump assembly delivers gas into the finger branch to expand the elastic body to form a clamping force, and at the same time enhances tissue adsorption through negative pressure; the controller receives the signal from the button assembly to control the start and stop of the air pump, realizing the flexible lifting and fixation of the gastrointestinal tissue.

[0007] The above approach has the following beneficial effects: 1. Through the elastic and flexible expansion structure design of the finger branches, combined with the wrap-around clamping of the finger branches after inflation by the air pump component, it adapts to the differences in tissue size of patients of different ages and obesity, adapts to individual anatomical differences, and avoids the size mismatch problem caused by fixed geometric parameters.

[0008] 2. By combining the synergistic effect of gas-driven clamping force and negative pressure adsorption force, a stable fixation interface is formed, solving the problem of "point contact" slippage or insufficient hooking force in traditional devices and improving the stability of lifting.

[0009] 3. The flexible silicone finger branches and adjustable flexible clamping method can reduce mechanical compression of the patient's gastrointestinal wall tissue and the risk of mucosal ischemia, reduce tissue stress response, and reduce the risk of tissue damage.

[0010] Furthermore, the telescopic cylinder includes an outer cylinder fixedly connected to the bottom of the lifting support block, and a hollow inner cylinder slidably connected inside the outer cylinder.

[0011] Beneficial effects: The length can be adjusted by sliding the outer cylinder and the hollow inner cylinder. The depth of the execution end can be flexibly adjusted according to the patient's gastrointestinal anatomical position and lifting range, which improves the adaptability of the device to different surgical space requirements and provides an adjustable mechanical support basis for the lifting operation.

[0012] Furthermore, the locking assembly includes a locking knob, a screw is fixedly connected to one side of the locking knob, a screw hole is provided on the outer cylinder that is threaded to the screw, and a fitting groove corresponding to the arc shape of the outer wall of the inner cylinder is provided at the end of the screw away from the locking knob, and an anti-slip layer is fixedly connected in the fitting groove.

[0013] Beneficial effects: The threaded engagement between the screw and the screw hole enables the fitting groove and anti-slip layer to make tight contact with the outer wall of the inner cylinder to achieve rigid locking, ensuring no displacement during the operation after the telescopic length is adjusted, and improving the structural stability and operational safety of the device during the lifting process.

[0014] Furthermore, the air pump assembly includes a negative pressure pump fixedly connected to the bottom of the lifting support block. The air inlet of the negative pressure pump is connected to a negative pressure main pipe, and the air outlet of the negative pressure pump is connected to an inflation pipe. Several negative pressure pipes are connected to the negative pressure main pipe, and several branch pipes are connected to the inflation pipe.

[0015] Beneficial effects: The negative pressure pump drives the negative pressure main tube and the air inflator tube to generate adsorption and clamping forces. The two forces work together on the tissue surface to form a composite fixation mechanism, which effectively enhances the anti-slipping ability during the lifting process and improves the reliability of the fixation effect.

[0016] Furthermore, the clamp has an opening along the axis of the inner cylinder, and the outer cylinder has a tube insertion hole. The negative pressure main pipe and the air inflation pipe are both placed in the hollow part of the inner cylinder through the tube insertion hole, and the bottom end of the air inflation pipe extends to the bottom of the clamp through the opening.

[0017] Beneficial effects: The negative pressure main tube and the inflation tube are housed in the hollow part of the inner cylinder through the insertion hole, and extend to the clamping claw assembly through the clamping seat port, realizing the integrated layout of the pipeline, avoiding the collision and interference of instruments during the operation, providing a stable channel for gas transmission, and ensuring the continuous stability of clamping and adsorption functions.

[0018] Furthermore, the inflation tube is connected in sequence to a pressure relief tube and a signal gas valve, which is connected to the controller signal.

[0019] Beneficial effects: The inflation tube is connected in sequence to the pressure relief tube and the signal gas valve. The controller adjusts the opening of the gas valve to change the pressure inside the tube. In conjunction with the pressure relief tube, excess gas is discharged in real time, realizing precise dynamic control of the clamping force to adapt to the needs of tissue tension changes during surgery.

[0020] Furthermore, the button assembly includes an on / off button fixedly connected to the side wall of the outer cylinder. The on / off button is used to receive the operator's pressing signal to transmit a signal to the controller to adjust the start or stop of the negative pressure pump.

[0021] Beneficial effects: The start / stop button directly controls the air pump by collecting the operator's pressing signal, simplifying the operator's operation process, reducing intraoperative adjustment steps, improving surgical efficiency, and at the same time enabling rapid response control of the lifting device, enhancing operational safety in emergency situations.

[0022] Furthermore, the button assembly also includes several clamping force adjustment buttons located below the open / close button. Each clamping force button is used to receive the operator's pressing signal to transmit the signal of adjusting the opening of the signal gas valve to the controller. The control signal of each clamping force adjustment button corresponds to the opening value of the gas valve decreasing sequentially.

[0023] Beneficial effects: The clamping force adjustment button transmits different control signals to the controller, adjusts the opening of the signal gas valve, realizes the pressure gradient change of the inflation tube, and thus precisely controls the clamping tightness of the finger branches to meet the differentiated clamping force requirements of tissues under different pathological conditions.

[0024] Furthermore, a symmetrical damping shaft is provided at the connection between the clamp and the bottom end of the inner cylinder, and the clamp and the bottom end of the inner cylinder are hinged through the symmetrical damping shaft.

[0025] Beneficial effects: By hinged the clamp to the bottom of the inner cylinder with a symmetrical damping pivot, the clamp can be rotated and adjusted at multiple angles to adapt to the dynamic mechanical changes caused by gastrointestinal peristalsis. The damping characteristics ensure directional stability after adjustment, avoid unexpected deviations, and improve the mechanical stability of the lifting system.

[0026] Furthermore, the wall thickness of several air chambers on the side closer to the lifting support block is smaller than that on the side farther from the lifting support block, and several transverse grooves are opened on the side of several air chambers on the branch corresponding to the side farther from the lifting support block.

[0027] Beneficial effects: The branch, through differentiated wall thickness design and surface transverse groove structure, guides the air chamber to deform preferentially towards the tissue side when it expands, enhancing the fit with the gastrointestinal surface. At the same time, the transverse groove structure optimizes elastic deformation compliance, further improving the adaptability and fixation reliability of the clamping interface.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the gastrointestinal lifting device for general surgery laparoscopy in this embodiment of the invention; Figure 2 This is a schematic diagram of the bearings of the lifting support block and the telescopic cylinder in an embodiment of the gastrointestinal lifting device for general surgery laparoscopy of the present invention; Figure 3 This is a partial axonometric sectional view of the telescopic cylinder in an embodiment of the gastrointestinal lifting device for general surgery laparoscopy of the present invention; Figure 4 This is an isometric view of the clamping seat and clamping claw assembly in an embodiment of the gastrointestinal lifting device for general surgery laparoscopy of the present invention. Figure 5 This is a biaxial sectional view of the finger branch in an embodiment of the gastrointestinal traction device for general surgery laparoscopy of the present invention. Figure 6 This is an isometric view of the outer cylinder connection when the signal gas valve is installed in an embodiment of the gastrointestinal lifting device for general surgery laparoscopy of the present invention; Figure 7 This is a schematic diagram of the isometric connection between the inner cylinder and the clamp when the damping shaft is installed in an embodiment of the gastrointestinal lifting device for general surgery laparoscopy of the present invention.

[0030] The reference numerals in the accompanying drawings of the instruction manual include: 1. Clamping frame; 101. Fixed clamp base; 102. Top plate; 103. Vertical slider; 104. Vertical slider locking block; 105. Vertical slider rod; 106. Vertical slide groove; 107. Horizontal slider; 108. Horizontal slider locking block; 109. Horizontal slider rod; 110. Horizontal slide groove; 2. Lifting support block; 3. Telescopic cylinder; 301. Outer cylinder; 302. Inner cylinder; 4. Locking knob; 5. Screw; 6. Screw hole; 7. Fitting groove; 8. Anti-slip layer; 9. Clamping seat; 10. Finger branch; 11. Air chamber; 12. Partition; 13. Air passage; 14. Negative pressure pipe; 15. Negative pressure pump; 16. Negative pressure main pipe; 17. Inflation pipe; 18. Pipe insertion hole; 19. Port; 20. Pressure relief pipe; 21. Signal gas valve; 22. Damping shaft. Detailed Implementation

[0031] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] The following detailed description illustrates the specific implementation method: Example 1:

[0035] This embodiment provides a gastrointestinal lifting device for general surgical laparoscopy, including a clamping frame 1 for supporting the device against the side of the operating table, specifically as follows: Figure 1 As shown, the clamping frame 1 includes a fixed clamping base 101 (which can be adjusted by a knob to clamp the side of the operating table to achieve cantilever fixation). The fixed clamping base 101 is preferably a stand table clamping vertical base accessory. A height adjustment rod is welded to the top of the fixed clamping base 101. The height adjustment rod includes a top plate 102, a vertical slider 103, a vertical sliding locking block 104, and four vertical sliding rods 105. The bottom ends of the vertical sliding rods 105 are all welded to the top of the fixed clamping base 101. The vertical slider 103 has four vertical sliding rods corresponding to it. A vertical groove 106 is provided at the position of the slide rod 105, and the vertical slide rods 105 are all slidably engaged within the vertical groove 106. A transverse slide is provided on one side of the vertical slide block 103. The transverse slide includes a transverse slide block 107, a transverse sliding locking block 108, and two transverse slide rods 109. A transverse groove 110 is provided on the transverse slide block 107 corresponding to the positions of the two transverse slide rods 109, and the transverse slide rods 109 are all slidably connected within the transverse groove 110. A lifting support block 2 is fused to the bottom of the transverse slide block 107. Before the operation, the surgeon precisely positions and adjusts the lifting support block 2 according to the patient's position and the spatial position of the surgical target area. After its position is determined, rigid locking is achieved through the synergistic action of the transverse sliding locking block 108 and the vertical sliding locking block 104, so that the lifting support block 2 and the surgical target area form a stable spatial correspondence, providing a stable mechanical support foundation for subsequent surgical lifting operations.

[0036] The bottom of the lifting support block 2 is equipped with a telescopic cylinder 3, as shown in the following figure. Figure 2 As shown, the telescopic cylinder 3 includes an outer cylinder 301 welded and fixed to the bottom surface of the lifting support block 2. A hollow inner cylinder 302 is slidably fitted inside the outer cylinder 301 (the inner cylinder 302 slides within the outer cylinder 301 to accommodate different lifting needs of the patient's tissue to be lifted). The outer cylinder 301 is provided with a locking assembly for locking the telescopic length. The locking assembly includes a locking twist 4. A screw 5 is fused and fixed to one side of the locking twist 4. A screw hole 6 is provided on the outer cylinder 301 that is threadedly fitted to the screw 5. A fitting groove 7 corresponding to the arc shape of the outer wall of the inner cylinder 302 is provided at the end of the screw 5 away from the locking twist 4. An anti-slip layer 8 is adhered and fixed in the fitting groove 7. A gripper assembly for fixing the patient's tissue to be lifted is provided at the bottom of the inner cylinder 302.

[0037] The surgeon can adjust the telescopic length by sliding the inner cylinder 302 to adapt to the gastrointestinal lifting needs of different patients. Then, by rotating the locking knob 4, the screw 5 is tightly fitted to the outer wall of the inner cylinder 302 through the fitting groove 7 and the anti-slip layer 8, thereby locking the telescopic length of the inner cylinder 302 and the outer cylinder 301. This design can accurately adapt to the gastrointestinal anatomical position and lifting range of different patients, and the locking is stable to avoid displacement during the operation, thus improving the safety and stability of the operation.

[0038] Based on the principle of adjusting the gripper assembly according to the lifting requirements, the lifting execution end of the existing general surgical laparoscopic gastrointestinal lifting device (i.e., the gripper assembly part described in this embodiment) adopts a fixed geometric parameter design and does not take into account the individual anatomical differences of the patient's abdominal tissue (such as the diameter of the intestinal tract in children being 1.0~2.0cm, adults being 3.0~5.0cm, and the gastrointestinal wall thickening of obese patients being 20%~40%). Its size parameters do not match the target tissue, which may cause insufficient lifting stability or mechanical damage to the tissue.

[0039] Therefore, the special feature of this embodiment is that the gripper assembly includes a gripper base 9 and a plurality of finger branches 10 uniformly fused circumferentially along the midpoint of the gripper base 9 (specifically combined with...). Figure 3 and Figure 4 As shown in the illustration, this embodiment uses four finger branches 10 as an example. Each finger branch 10 is an elastic silicone body, and several air chambers 11 and partitions 12 are alternately formed along its axial direction within each finger branch 10 (in this embodiment, specifically using...). Figure 5 Taking the alternating arrangement of four air chambers 11 and three partitions 12 as an example, each partition 12 is provided with a symmetrical air passage 13, which is used to connect adjacent air chambers 11 (the four air chambers 11 in each finger branch 10 are interconnected through several air passages 13). Each finger branch 10 is provided with several negative pressure pipes 14 corresponding to the position and number of partitions 12, and the negative pressure pipes 14 are perpendicular to the air passages 13 and pass through the corresponding finger branch 10.

[0040] Based on the above-mentioned structural design of the four finger branches 10, this embodiment also provides an air pump assembly for pumping gas flow at the bottom of the lifting support block 2, combined with... Figure 3 , Figure 4 and Figure 5 As shown, the air pump assembly includes a negative pressure pump 15 fixedly connected to the bottom of the lifting support block 2 by bolts. The negative pressure pump 15 is signal-connected to a controller. The air inlet of the negative pressure pump 15 is connected to a negative pressure main pipe 16 (generating negative pressure), and the air outlet of the negative pressure pump 15 is connected to an inflation pipe 17 (generating positive pressure). A tube placement hole 18 is provided on the outer cylinder 301, and a through-hole 19 is provided on the clamp 9 along the axial direction of the inner cylinder 302. The negative pressure main pipe 16 and the inflation pipe 17 are both placed in the hollow part of the inner cylinder 302 through the tube placement hole 18 (to house the negative pressure main pipe 16 and the inflation pipe 17 inside the inner cylinder 302, effectively protecting the pipeline from interference by collisions with instruments during surgery, and providing stable power support for the lifting of gastrointestinal tissues). Several negative pressure pipes 14 are all connected to the negative pressure main pipe 16. The bottom end of the inflation pipe 17 extends to the bottom of the clamp 9 through the through-hole 19. The air chambers 11 on different finger branches 10 that are closest to the inflation pipe 17 are all connected to the inflation pipe 17.

[0041] In conjunction with the structure of each finger branch 10 and the negative pressure pump 15, the fixation process of the tissue to be lifted in this embodiment is as follows: After the negative pressure pump 15 is started, the inflation pipe 17 delivers positive pressure gas to several air chambers 11 in each branch 10. In this embodiment, several air chambers 11 are also designed such that the wall thickness on the side closer to the lifting support block 2 is smaller than that on the side farther from the lifting support block 2 (specifically as follows). Figure 5 As shown, positive pressure gas is injected into several air chambers 11, which will drive the air chambers 11 to expand axially and cause each finger branch 10 to deform elastically, so that its outer peripheral wall conforms to the surface contour of the gastrointestinal tissue to be lifted (gradually wrapping around the gastrointestinal tissue to be lifted, thus adapting to the differences in intestinal diameter and wall thickness in children, adults and obese patients). At the same time, the negative pressure main pipe 16 draws air from the contact area between each finger branch 10 and the tissue through several negative pressure pipes 14 to form negative pressure. The mechanical clamping force generated by the expansion of the air chambers 11 and the negative pressure adsorption force are used to improve the stability of the lifting fixation. In addition, the flexible material of the finger branches 10 can reduce direct damage to the patient's tissue to be lifted. On the other hand, the design achieves adjustable flexible fixation by gas filling to reduce the pressure on the patient's tissue, thereby effectively reducing tissue stress response and improving the patient's postoperative comfort.

[0042] To further reduce the difficulty of intraoperative operation, this embodiment has a button assembly on the surface of the telescopic cylinder 3 for pressing signals to start or stop the air pump assembly. The button assembly includes an on / off button (not shown in the figure) fixed to the side wall of the outer cylinder 301 by screws. The on / off button is used to receive the operator's pressing signal to transmit the signal to the controller to adjust the start or stop of the negative pressure pump 15. With this design, the operator can control the start or stop of the air pump assembly by pressing the on / off button, thereby realizing the fixation and relaxation of the gastrointestinal tissue, simplifying the intraoperative operation steps, effectively reducing the difficulty of operation, and improving the efficiency and convenience of operation.

[0043] Example 2:

[0044] In clinical applications, due to individual differences among patients (such as age, body type, tissue elasticity, and pathological condition) and the unique anatomical structure and tissue mechanical properties of different organs (such as organ size, wall thickness, and physiological functional requirements), their requirements for lifting force vary significantly.

[0045] Therefore, the difference between this embodiment and Embodiment 1 is that, specifically as follows: Figure 6 As shown, the inflation tube 17 is also connected in sequence to a pressure relief tube 20 and a signal gas valve 21, which is connected to the controller via a signal. Correspondingly, the button assembly also includes several clamping force adjustment buttons located below the open / close button. The clamping force buttons are used to receive the operator's pressing signal to transmit the signal to the controller to adjust the opening of the signal gas valve 21. The control signal of each clamping force adjustment button corresponds to the opening value of the gas valve decreasing sequentially.

[0046] The operator can press the corresponding clamping force adjustment button (not shown in the figure) to transmit the corresponding pressing signal to the controller. The controller adjusts the opening of the signal gas valve 21 according to the control signal of different clamping force adjustment buttons. The change in the opening of the signal gas valve 21 will change the gas pressure in the inflation tube 17, thereby changing the amount of gas delivered by the inflation tube 17 to the air chamber 11 in the four finger branches 10. This causes the degree of expansion of the air chamber 11 in the finger branches 10 to change with the gas pressure, ultimately achieving the control of the clamping tightness of the four finger branches 10.

[0047] The design of the pressure relief pipe 20 can promptly discharge excess gas in the inflation pipe 17 when the opening of the signal gas valve 21 decreases, ensuring that the gas pressure decreases precisely with the change of valve opening, thereby effectively reducing the clamping tightness.

[0048] Example 3:

[0049] During the procedure following the lifting and fixation, the continuous peristalsis of the gastrointestinal tract under physiological conditions will cause dynamic mechanical changes. At this time, the selection and adjustment of the lifting and fixation direction is also a key operating parameter. Its adaptability directly affects the mechanical stability of the lifting system, and thus plays an important role in the durability and reliability of the fixation effect.

[0050] Therefore, the difference between this implementation and Example 2 is that, specifically as follows: Figure 7 As shown, a symmetrical damping shaft 22 is provided at the connection between the clamp 9 and the bottom end of the inner cylinder 302. The damping shaft 22 is preferably an HTAN 360-degree rotating disc damping hinge. The clamp 9 and the bottom end of the inner cylinder 302 are hinged through the symmetrical damping shaft 22. This design allows the clamp 9 to be rotated and adjusted at multiple angles relative to the bottom end of the inner cylinder 302, so that the surgeon can flexibly adjust the lifting direction of the clamp 9 (and the connected finger branch 10) according to the dynamic mechanical changes generated by gastrointestinal peristalsis during the operation. At the same time, the damping characteristics of the damping shaft 22 can provide stable resistance, ensuring that the adjusted lifting direction remains fixed under the external force generated by gastrointestinal tissue peristalsis, avoiding unexpected directional deviation caused by tissue dynamic displacement, thereby achieving precise adaptation and stable maintenance of the lifting fixation direction, effectively addressing the dynamic mechanical needs of different patients and different organs during the peristalsis process, and further improving the durability and reliability of the lifting fixation effect.

[0051] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A gastrointestinal lifting device for general surgical laparoscopy, comprising a clamping frame (1) for clamping and supporting the side of the operating table, wherein a lifting support block (2) is slidably connected to the clamping frame (1), characterized in that, The bottom of the lifting support block (2) is fixedly connected to a telescopic cylinder (3), and the telescopic cylinder (3) is provided with a locking component for locking the telescopic length. The bottom end of the telescopic cylinder (3) is provided with a gripper assembly. The gripper assembly includes a gripper base (9) and several finger branches (10) that are uniformly fixedly connected circumferentially along the midpoint of the gripper base (9). The finger branches (10) are all elastic silicone bodies. Several air chambers (11) and partitions (12) are alternately opened in the finger branches (10) along their axial direction. Symmetrical air passages (13) are opened on each partition (12). The air passages (13) are used to connect adjacent air chambers (11). Several negative pressure pipes (14) corresponding to the position of the partitions (12) are provided on each finger branch (10). The negative pressure pipes (14) are perpendicular to the air passages (13) and pass through the finger branches (10). The bottom of the lifting support block (2) is also provided with an air pump assembly for pumping gas flow. Several negative pressure pipes (14) are connected to the input end of the air pump assembly. Several finger branches (10) are connected to the output end of the air pump assembly. The air pump assembly is connected to a controller. The surface of the telescopic cylinder (3) is provided with a button assembly for pressing the signal to start and stop the air pump assembly. The button assembly is connected to the controller signal.

2. The gastrointestinal traction device for general surgical laparoscopy according to claim 1, characterized in that, The telescopic cylinder (3) includes an outer cylinder (301) fixedly connected to the bottom of the lifting support block (2), and a hollow inner cylinder (302) is slidably connected inside the outer cylinder (301).

3. The gastrointestinal traction device for general surgical laparoscopy according to claim 2, characterized in that, The locking assembly includes a locking knob (4), a screw (5) is fixedly connected to one side of the locking knob (4), a screw hole (6) is provided on the outer cylinder (301) to be threaded with the screw (5), and a fitting groove (7) corresponding to the arc shape of the outer wall of the inner cylinder (302) is provided at the end of the screw (5) away from the locking knob (4), and an anti-slip layer (8) is fixedly connected in the fitting groove (7).

4. The gastrointestinal traction device for general surgical laparoscopy according to claim 3, characterized in that, The air pump assembly includes a negative pressure pump (15) fixedly connected to the bottom of the lifting support block (2). The air inlet of the negative pressure pump (15) is connected to a negative pressure main pipe (16), and the air outlet of the negative pressure pump (15) is connected to an inflation pipe (17). Several negative pressure pipes (14) are connected to the negative pressure main pipe (16), and several branch pipes (10) are connected to the inflation pipe (17).

5. The gastrointestinal traction device for general surgical laparoscopy according to claim 4, characterized in that, A through-hole (19) is provided on the clamp (9) along the axis of the inner cylinder (302), and a tube hole (18) is provided on the outer cylinder (301). The negative pressure main pipe (16) and the air inflator (17) are both placed in the hollow part of the inner cylinder (302) through the tube hole (18). The bottom end of the air inflator (17) extends to the bottom of the clamp (9) through the through-hole (19).

6. The gastrointestinal traction device for general surgical laparoscopy according to claim 5, characterized in that, The inflation tube (17) is also connected in sequence to a pressure relief tube (20) and a signal gas valve (21), which is connected to the controller signal.

7. The gastrointestinal traction device for general surgical laparoscopy according to claim 6, characterized in that, The button assembly includes an on / off button fixedly connected to the side wall of the outer cylinder (301). The on / off button is used to receive the operator's pressing signal to transmit a signal to the controller to adjust the start or stop of the negative pressure pump (15).

8. The gastrointestinal traction device for general surgical laparoscopy according to claim 7, characterized in that, The button assembly also includes several clamping force adjustment buttons located below the open / close button. The clamping force buttons are used to receive the operator's pressing signal to transmit the signal of the adjustment signal gas valve (21) to the controller. The control signal of each clamping force adjustment button corresponds to the opening value of the gas valve decreasing sequentially.

9. The gastrointestinal traction device for general surgical laparoscopy according to claim 8, characterized in that, A symmetrical damping shaft (22) is provided at the connection between the clamp (9) and the bottom end of the inner cylinder (302), and the clamp (9) and the bottom end of the inner cylinder (302) are hinged through the symmetrical damping shaft (22).

10. The gastrointestinal traction device for general surgical laparoscopy according to claim 9, characterized in that, The wall thickness of several air chambers (11) on the side closer to the lifting support block (2) is less than that on the side away from the lifting support block (2). Several transverse grooves are provided on the side of several air chambers (11) on the branch (10) away from the lifting support block (2).

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