Gastrolaparoscopic puncture device with anti-skid fixing function

Abstract

The present application provides a kind of gastric laparoscopic surgery puncture device with anti-skid fixing function, overcome the traditional puncture device cannot be punctured into stomach cavity, stomach cavity cannot be close to abdominal wall after puncture, gastric contents easily reflux into abdominal cavity through puncture device and cause pollution etc. Surgical difficulties, this puncture device makes this new technology surgical procedure more simplified, safe and effective. Including sleeve assembly and puncture assembly, sleeve assembly includes sleeve seat and sleeve arranged at one end of sleeve seat, puncture assembly includes puncture handle and puncture needle arranged at one end of puncture handle, and puncture needle is slidably arranged in sleeve. The present application can effectively avoid the phenomenon that sleeve slides out from stomach cavity, repeatedly punctures and damages stomach and other organs and blood vessels of patient, avoid pulling out the whole puncture device when pulling out the equipment, ensure that gastric laparoscopic surgery is carried out smoothly, reduce the pain of patient;Simple structure, convenient operation, save time and effort, improve the protection and fixing effect of sleeve and surgical efficiency;Can pull the skin incision, improve the fixing effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of laparoscopic minimally invasive surgical instruments, in particular to a laparoscopic intragastric surgery puncture device with anti-skid fixing function, which can be used for laparoscopic intragastric submucosal tumor resection, laparoscopic intragastric early gastric cancer resection, laparoscopic intragastric gastric bleeding surgery, etc. BACKGROUND

[0002] In the past decade, the digestive endoscopy technology in China has made great progress. Endoscopic mucosal resection (EMR) and endoscopic submucosal dissection (ESD) techniques are widely used. Endoscopists are constantly challenging the limits of endoscopy technology, and the indications for endoscopic surgery are constantly expanding. For early gastric cancer, benign tumors in the stomach, gastrointestinal stromal tumors originating from the stomach, and large gastric polyps, endoscopists have continuously broken through from mucosal surgery to serosal surgery. Endoscopic surgery relies on the operator's flexible manipulation of the endoscope head to swing up and down, left and right, and the rotation of the scope body, and uses electrical energy equipment to complete the resection of the lesion. Although endoscopists have developed many new tools under the endoscope, they still cannot change the current situation of single-arm operation. For lesions in the upper part of the stomach, especially in the gastroesophageal junction, the operation is difficult because it requires endoscopic mirror inversion technology to observe and resect the lesion. For large resection areas, deep lesions, and control of bleeding and perforation during the resection process, the current endoscopic technology is still unable to complete the operation.

[0003] Laparoscopic intragastric surgery (LIGS) is a new surgical method. It extends the traditional laparoscopic surgery from the serosal surface of the stomach to the mucosal surface of the stomach cavity, locates the intragastric lesion, and uses laparoscopic instruments to complete the resection and repair of the lesion. Conventional laparoscopic surgery cannot easily detect tumors from the abdominal serosal surface, while LIGS can more accurately locate and resect tumors. Unlike single-arm operation in endoscopic surgery, LIGS can use the instruments of both hands of the operator to complete the operation under the monitoring of the laparoscope. For lesions in the upper part of the stomach, especially in the gastroesophageal junction, traditional laparoscopic surgery can only perform proximal gastrectomy, which is a large surgical trauma with poor quality of life. Therefore, LIGS can easily and successfully complete those surgeries that are very difficult for endoscopic operation, expand the resection range, and have poor quality of life for traditional laparoscopic surgery.

[0004] However, there are some technical difficulties in the laparoscopy through the stomach. 1. How to place the puncture device into the stomach cavity? The stomach body is located in the abdominal cavity and does not have direct contact with the abdominal wall, and there is a large gap between them. The traditional puncture device can only be placed into the abdominal cavity through the abdominal wall, but cannot be directly placed into the stomach cavity; 2. During the operation, the stomach body must be fixed to ensure fine operation, how to keep the fixed state for a long time; 3. Because the stomach wall is thin and soft, how to prevent the stomach juice from flowing back into the abdominal cavity to cause abdominal cavity pollution; 4. During the operation, how to make the puncture device not easy to slip out of the stomach cavity and be connected with the outside of the abdominal wall and fixed to the abdominal wall; 5. After the operation, how to effectively pull out the puncture device from the stomach cavity and as little as possible to damage the stomach wall to achieve the purpose of minimally invasive. These all need a special puncture device for laparoscopy through the stomach to ensure the safe and effective operation.

[0005] The puncture device for laparoscopy through the stomach is a minimally invasive surgical instrument, which aims to establish a surgical channel for the minimally invasive instrument to enter and exit the abdominal cavity during the operation. Generally, the puncture device for laparoscopy through the stomach includes a sleeve assembly and a puncture assembly. One side of the sleeve end of the sleeve assembly is provided with an air valve, and the puncture assembly penetrates the sleeve assembly. After the sleeve assembly and the puncture assembly are integrally inserted into the abdominal cavity, the puncture assembly is pulled out, and then the air valve is connected by the insufflation machine to inject protective gas into the sleeve assembly, so that the inner wall of the abdominal cavity and the internal organ tissue are effectively separated, and a surgical channel for the minimally invasive instrument to enter and exit the abdominal cavity can be provided.

[0006] At present, the puncture device for laparoscopy through the stomach on the market directly inserts the outer tube into the human body during the operation. Since the front end of the existing puncture tube is basically smooth, it is not easy to fix after puncture. The outer tube of the puncture device will slide down under the action of its own gravity or touch during the operation, and in severe cases, it may even damage the organs and blood vessels. At the same time, during the process of pulling out the inserted instrument, the entire puncture device is easily pulled out, affecting the operation and increasing the pain of the patient. Although the outer wall of the puncture tube is provided with threads to increase the friction between the tube wall and the abdominal wall of the patient, it is easy to cause bleeding due to friction of the abdominal wall of the patient during insertion and extraction, and it has poor effect in preventing the puncture tube from sliding down or being pulled out by mistake.

[0007] In summary, there is an urgent need to design a puncture device for laparoscopy through the stomach with anti-skid fixing function to overcome the above problems. SUMMARY

[0008] The purpose of the present application is to provide a puncture device for laparoscopy through the stomach with anti-skid fixing function to overcome the above problems.

[0009] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows: the puncture device for laparoscopy through the stomach with anti-skid fixing function comprises:

[0010] The application relates to a cannula assembly and a puncture assembly, wherein the cannula assembly comprises a cannula base and a cannula arranged at one end of the cannula base, and the puncture assembly comprises a puncture handle and a puncture needle arranged at one end of the puncture handle, and the puncture needle is arranged to slide through the cannula.

[0011] The outer wall of the cannula away from one end of the cannula base is uniformly provided with a plurality of grooves, and the grooves are respectively provided with elastic expansion components; the outer wall of the cannula close to one end of the cannula base is provided with a control assembly, and the control assembly is used for promoting the elastic expansion components to protrude out of the grooves or to extend into the grooves.

[0012] The technical problems and purposes of the application can also be further realized by the following technical measures.

[0013] Further, the elastic expansion component comprises an arc-shaped elastic sheet, two ends of the arc-shaped elastic sheet are slidably connected with the inner walls of the two sides of the groove, and the middle of the arc-shaped elastic sheet is fixedly connected with the control assembly.

[0014] Further, the control assembly comprises a control knob threadedly and rotatably connected with the outer wall of the cannula and a plurality of first pull ropes circumferentially and slidably arranged at one end of the control knob close to the arc-shaped elastic sheet, and the other ends of the first pull ropes are respectively arranged to pass through the grooves and are fixedly connected with the middle of the inner wall of the corresponding arc-shaped elastic sheet.

[0015] Further, the control knob is internally provided with an arc-shaped sliding groove at one end close to the arc-shaped elastic sheet, the arc-shaped sliding groove is internally provided with a plurality of sliding beads corresponding to the first pull ropes, and the first pull ropes are arranged to pass through the arc-shaped sliding groove and are fixedly connected with the corresponding sliding beads.

[0016] Further, the inner wall of the cannula is provided with a channel for the first pull ropes to pass through, one end of the channel is correspondingly arranged to the middle of the inner wall of the arc-shaped elastic sheet, the outer wall of the first pull ropes located in the groove is provided with a first reset spring, and the two ends of the first reset spring are respectively fixedly connected with the middle of the arc-shaped elastic sheet and the inner wall of the groove.

[0017] Further, the inner walls of the grooves are respectively provided with sliding grooves, the sliding grooves are internally provided with sliding blocks, and the opposite side walls of the sliding blocks are respectively fixedly connected with the two ends of the arc-shaped elastic sheet.

[0018] Further, the two sides of one end of the cannula close to the control knob are respectively provided with arc-shaped grooves, the arc-shaped grooves are respectively provided with arc-shaped pulling blocks, one end of the arc-shaped pulling block away from the cannula is provided with a pulling arm, and the middle of the arc-shaped pulling block is fixedly connected with the arc-shaped groove through a second reset spring.

[0019] The pulling arms are arranged on one side of the arc-shaped pulling blocks close to the control knob, and the two arc-shaped pulling blocks move towards or away from each other when the control knob rotates.

[0020] Further, an annular groove is formed in the outer wall of the sleeve, an outer thread is arranged on the inner wall of the annular groove, an inner thread matching the outer thread is arranged on the inner wall of the control knob, and the height of the annular groove is greater than the height of the control knob.

[0021] Further, the arc-shaped groove and the annular groove are connected through a sliding hole, a wedge-shaped block is slidably arranged in the sliding hole, one end of the wedge-shaped block is fixedly connected to one side wall of the arc-shaped groove through a third reset spring, and the other end of the third reset spring is in contact with the control knob.

[0022] Further, the number of the grooves and the arc-shaped elastic sheets is at least three.

[0023] Compared with the prior art, the present application has the following beneficial effects:

[0024] 1、The gastric laparoscopic surgery puncture device with anti-skid fixing function of the present application can greatly improve the safety and feasibility of surgery compared with the traditional laparoscopic surgery puncture device. For tumors of the greater curvature of the stomach, laparoscopic wedge resection is very advantageous. However, for tumors of the upper part of the stomach, the posterior wall of the stomach, and the junction of the stomach and esophagus, it is very challenging. Most laparoscopic surgeons will ask endoscopic surgeons to locate during the operation, or directly open the anterior wall of the stomach to find the lesion; sometimes, a new incision needs to be made on the anterior wall of the stomach to find the lesion in the fundus of the stomach, resulting in gastric juice spilling and contaminating the abdominal cavity; the traditional abdominal surgery has a view from the bottom up, and due to the interference of the gastric mucosal folds, the positioning of the lesion is not accurate; during the resection process, the operator is prone to excessive traction of the gastric wall, resulting in excessive resection of the gastric wall, and there is a risk of postoperative stenosis or reflux; after the lesion is resected, the gap between the anterior and posterior walls of the arm needs to be sutured, the suture range is large, the difficulty is high, the operation time is long, and the incidence of postoperative anastomotic fistula is high. However, the gastric laparoscopic surgeon uses the laparoscope to enter the stomach cavity and directly observe the tumor, the stomach cavity is filled, and the interference of the gastric mucosal folds on the lesion is reduced; the electric knife marks a clear circumferential resection range, and the lesion is completely resected along the marked line; there is no excessive traction of the gastric wall, and the gastric wall does not need to be resected; the incision is accurately sutured with absorbable thread, and postoperative anastomotic fistula is rare; the operation time is shortened, and gastric juice contamination of the abdominal cavity is avoided; the surgical trauma is small, blood loss is less, pain is light, intestinal function recovers quickly after surgery, and hospitalization time is short. Gastric laparoscopic surgery enables the laparoscope to enter the mucosal surface of the stomach cavity from the serosal surface of the stomach, making it possible for laparoscopic surgery to enter the era of extraperitoneal surgery. To successfully develop this technology, the puncture device must pass through the abdominal wall, the abdominal cavity, and then puncture into the stomach cavity through the stomach wall, and the stomach wall must be fixed well and the puncture device must not slip easily. The present application can facilitate the safe and effective development of this technology.

[0025] 2、The gastric laparoscopic surgery puncture device with anti-skid fixing function of the present application, by setting multiple elastic expansion components on the outer wall of the sleeve and setting a control assembly on one end of the sleeve close to the sleeve seat, the elastic expansion components can be retracted into the groove of the sleeve wall and protrude out of the groove through the control assembly, when the sleeve is inserted or pulled out, the elastic expansion components are retracted into the groove of the sleeve wall, which can effectively avoid damage to the patient's abdominal wall during the insertion and removal of the sleeve, resulting in friction bleeding; when the elastic expansion components protrude out of the groove, the sleeve can be fixed on the patient's abdomen, effectively avoiding the phenomenon of sliding down of the sleeve caused by various reasons, damaging the patient's organs and blood vessels, and avoiding the process of pulling the instrument out of the entire puncture device, ensuring the smooth progress of the operation, and reducing the patient's pain.

[0026] 3. The gastric laparoscopic surgery puncture device with anti-skid fixing function of the present application, through setting the control knob, the one end of the first pull rope is circumferentially slid on the end face of the control knob, and the other end of the first pull rope is fixed in the middle of the arc-shaped elastic sheet, the doctor rotates the control knob outside the patient's body, which can drive the first pull rope to move outward or inward, when moving outward, the arc-shaped elastic sheet can be retracted into the groove to avoid damage to the patient's abdominal wall during the process of inserting and pulling out the sleeve; when the first pull rope moves inward, the arc-shaped elastic sheet can protrude out of the groove again, and the arc-shaped elastic sheet is clamped into the patient's abdominal wall to avoid the sleeve from sliding up and down at will, which is simple in structure, convenient to operate, time-saving and labor-saving, improves the protection and fixing effect of the sleeve, and improves the operation efficiency of the doctor.

[0027] 4. The gastric laparoscopic surgery puncture device with anti-skid fixing function of the present application, through setting the arc-shaped grooves on both sides of the sleeve outer wall, setting the arc-shaped pulling blocks in the arc-shaped grooves, and setting the second reset springs between the arc-shaped pulling blocks and the arc-shaped grooves, the wedge-shaped block is pushed to slide between the arc-shaped pulling blocks and the grooves through the control knob, then the arc-shaped pulling blocks are pushed to move outward of the arc-shaped grooves by the control wedge-shaped block, the two arc-shaped pulling blocks are moved away from each other, so that the skin incision is pulled open by the arc-shaped pulling blocks, the fixation of the sleeve assembly on the surface of the patient's skin is realized, and the fixation effect is further improved; when the sleeve is inserted or pulled out, the control knob is reversely rotated to reset the wedge-shaped block under the elastic force of the third spring, and at the same time, the arc-shaped pulling block enters the arc-shaped groove to avoid damage to the patient's abdominal wall when the sleeve is inserted or pulled out. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 is the sectional structure schematic diagram of the gastric laparoscopic surgery puncture device with anti-skid fixing function provided by the present application;

[0029] Figure 2 is Figure 1 the enlarged schematic diagram of A in the figure;

[0030] Figure 3 is Figure 1 the enlarged schematic diagram of B in the figure;

[0031] BRIEF DESCRIPTION OF DRAWINGS

[0032] 1. Sleeve assembly; 11, sleeve seat; 12, sleeve; 121, groove; 122, channel; 123, sliding groove; 124, sliding block; 125, arc-shaped groove; 126, annular groove; 1261, external thread; 13, elastic telescopic component; 131, arc-shaped elastic sheet;

[0033] 2. Puncture assembly; 21, puncture handle; 22, puncture needle;

[0034] 3, control assembly; 31, control knob; 311, internal thread; 32, first pull rope; 33, arc-shaped sliding groove; 34, sliding ball; 35, first return spring;

[0035] 4, arc-shaped pulling block; 41, pulling arm; 42, second return spring; 43, wedge-shaped block; 44, third return spring; 45, sliding hole. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0037] Please refer to Figures 1 to 3 A laparoscopic transgastric surgery puncture device with anti-skid fixing function, comprising a trocar assembly 1 and a puncture assembly 2, the trocar assembly 1 comprising a trocar base 11 and a trocar 12 arranged at one end of the trocar base 11, the puncture assembly 2 comprising a puncture handle 21 and a puncture needle 22 arranged at one end of the puncture handle 21, the puncture needle 22 slidingly penetrating the trocar 12;

[0038] The outer wall of the trocar 12 away from one end of the trocar base 11 is uniformly provided with a plurality of grooves 121, and the grooves 121 are respectively provided with elastic expansion components 13, and the outer wall of the trocar 12 close to one end of the trocar base 11 is provided with a control assembly 3, and the control assembly 3 is used to promote the elastic expansion components 13 to protrude out of the grooves 121 or to extend into the grooves 121.

[0039] In the present application, the elastic expansion components 13 can be retracted into the grooves 121 of the trocar wall or protrude out of the grooves 121 by the control assembly 3. Specifically, when the trocar 12 is inserted or pulled out, the elastic expansion components 13 are retracted into the grooves 121 of the trocar wall, which can effectively avoid damaging the patient's abdominal wall during the process of inserting or pulling out the trocar 12, causing friction and bleeding; when the elastic expansion components 13 protrude out of the grooves 121, the trocar 12 can be fixed on the patient's abdomen, effectively avoiding the phenomenon of sliding down of the trocar 12 caused by various reasons, damaging the patient's organs and blood vessels, and avoiding the process of pulling out the entire puncture device during the process of pulling out the device, ensuring the smooth progress of the operation and reducing the pain of the patient.

[0040] Preferably, the elastic expansion components 13 comprise an arc-shaped elastic sheet 131, both ends of the arc-shaped elastic sheet 131 are slidingly connected with the inner walls of both sides of the grooves 121, and the middle of the arc-shaped elastic sheet 131 is fixedly connected with the control assembly 3.

[0041] In this embodiment, since the arc-shaped spring piece 131 has a certain elastic force, the control component 3 can pull the protruding part in the middle of the arc-shaped spring piece 131 into the groove 121. When pulling, the two ends of the arc-shaped spring piece 131 slide toward the two sides of the groove 121 respectively, thereby straightening the arc-shaped spring piece 131 and sticking it to the groove 121 to avoid protruding from the groove 121; on the other hand, the control component 3 can also reset the arc-shaped spring piece 131 so that it protrudes from the groove 121 to grasp the patient's abdominal wall.

[0042] Preferably, the control component 3 includes a control knob 31 connected to the outer wall of the sleeve 12 by threaded rotation and a plurality of first pull ropes 32 circumferentially slidingly arranged on the control knob 31 near one end of the arc-shaped spring piece 131, and the other ends of the first pull ropes 32 respectively penetrate into the groove 121 from the wall of the sleeve 12 and are fixedly connected in the middle of the inner wall of the corresponding arc-shaped spring piece 131.

[0043] In this embodiment, the doctor rotates the control knob 31 outside the patient's body to drive the first pull rope 32 to move outward or inward. When moving outward, the arc-shaped spring piece 131 can be retracted into the groove 121 to prevent it from causing damage to the patient's abdominal wall during the insertion and removal of the sleeve; when the first pull rope 32 moves inward, the arc-shaped spring piece 131 can be protruded out of the groove 121 again, and the arc-shaped spring piece 131 can be stuck in the patient's abdominal wall to prevent the sleeve 12 from sliding up and down at will.

[0044] Preferably, an arcuate slot 33 is defined within the end of the control knob 31 proximal to the arcuate spring piece 131. A plurality of sliding beads 34 corresponding to the first pull cords 32 are positioned within the arcuate slot 33. The first pull cords 32 pass through the arcuate slot 33 and are fixedly connected to their corresponding sliding beads 34. When the control knob 31 is rotated, the sliding beads 34 drive the first pull cord 32 to rotate within the arcuate slot 33, causing the first pull cord 32 to move only up and down, virtually without rotating. This prevents the first pull cord 32 from twisting and affecting its usability.

[0045] Preferably, the inner wall of the sleeve 12 is provided with a channel 122 for the first pull cord 32 to pass through. One end of the channel 122 corresponds to the middle of the inner wall of the curved spring piece 131. A first return spring 35 is sleeved on the outer wall of the first pull cord 32 located in the groove 121. The two ends of the first return spring 35 are respectively fixedly connected to the middle of the curved spring piece 131 and the inner wall of the groove 121. The first pull cord 32 pulls the curved spring piece 131 radially along the sleeve 12 in the middle of the inner wall of the curved spring piece 131, which can improve the pulling effect and save structural effort.

[0046] Preferably, the inner wall of the groove 121 is provided with a sliding groove 123 on both sides, and the sliding groove 123 is provided with a sliding block 124, and the opposite side walls of the sliding block 124 are fixedly connected with the two ends of the arc-shaped elastic sheet 131 respectively.

[0047] In another embodiment, the sleeve 12 is provided with an arc-shaped groove 125 on both sides of one end close to the control knob 31, and the arc-shaped groove 125 is provided with an arc-shaped pulling block 4, and one end of the arc-shaped pulling block 4 away from the sleeve 12 is provided with a pulling arm 41, and the middle of the arc-shaped pulling block 4 is fixedly connected with the arc-shaped groove 125 through a second reset spring 42.

[0048] The pulling arm 41 is arranged on one side of the arc-shaped pulling block 4 close to the control knob 31, and when the control knob 31 rotates, the two arc-shaped pulling blocks 4 move towards or away from each other.

[0049] In this embodiment, when the control knob 31 rotates, the two arc-shaped pulling blocks 4 can move towards or away from each other, so that the two arc-shaped pulling blocks 4 can grasp the abdominal wall through the arc-shaped elastic sheet 131 and realize the pulling and fixing of the skin incision, thereby improving the fixing effect of the puncture device.

[0050] The outer wall of the sleeve 12 is also provided with an annular groove 126, the inner wall of the annular groove 126 is provided with an external thread 1261, the inner wall of the control knob 31 is provided with an internal thread 311 matched with the external thread 1261, and the height of the annular groove 126 is greater than the height of the control knob 31.

[0051] As shown in Figure 3 The arc-shaped groove 125 and the annular groove 126 are connected through a sliding hole 45, the sliding hole 45 is slidably provided with a wedge-shaped block 43, one end of the wedge-shaped block 43 is fixedly connected with one side wall of the arc-shaped groove 125 through a third reset spring 44, and the other end of the third reset spring 44 is in contact with the control knob 31.

[0052] In this embodiment, the shape of the wedge-shaped block 43 is as shown in Figure 3 When the control knob 31 pushes the wedge-shaped block 43 to slide between the arc-shaped pulling block 4 and the arc-shaped groove 125, the control knob 31 pushes the arc-shaped pulling block 4 to move to the outside of the arc-shaped groove 125, so that the two arc-shaped pulling blocks 4 move away from each other, thereby pulling open the skin incision through the arc-shaped pulling block 4, realizing the fixation of the sleeve assembly on the surface of the patient's skin, and further improving the fixing effect; when the sleeve 12 is inserted or pulled out, the control knob 31 is reversely rotated to reset the wedge-shaped block 43 under the elastic force of the third reset spring 44, and at the same time, the arc-shaped pulling block 4 enters the arc-shaped groove 125, so as to avoid damage to the abdominal wall of the patient when the sleeve is inserted or pulled out.

[0053] Preferably, the number of the grooves 121 and the arc-shaped elastic pieces 131 is at least three.

[0054] The application is further described in connection with the embodiments above, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the application.

Claims

1. A transgastric laparoscopic surgical puncture device with an anti-slip fixing function, comprising a sleeve assembly (1) and a puncture assembly (2), wherein the sleeve assembly (1) comprises a sleeve seat (11) and a sleeve (12) arranged at one end of the sleeve seat (11), and the puncture assembly (2) comprises a puncture handle (21) and a puncture needle (22) arranged at one end of the puncture handle (21), wherein the puncture needle (22) is slidably inserted into the sleeve (12), and is characterized in that: The outer wall of the sleeve (12) at one end away from the sleeve seat (11) is uniformly provided with a plurality of grooves (121), and elastic telescopic components (13) are respectively provided in the grooves (121). The outer wall of the sleeve (12) at one end close to the sleeve seat (11) is provided with a control component (3), and the control component (3) is used to cause the elastic telescopic components (13) to protrude out of the groove (121) or extend into the groove (121); The elastic telescopic component (13) comprises an arc-shaped spring piece (131), the two ends of the arc-shaped spring piece (131) are slidably connected to the inner walls of both sides of the groove (121), and the middle of the arc-shaped spring piece (131) is fixedly connected to the control component (3); The control assembly (3) includes a control knob (31) connected to the outer wall of the sleeve (12) by screw thread rotation and a plurality of first pull ropes (32) circumferentially slidingly arranged on the control knob (31) near one end of the arc-shaped elastic piece (131), the other ends of the first pull ropes (32) respectively passing through the wall of the sleeve (12) into the groove (121) and fixedly connected to the middle of the inner wall of the corresponding arc-shaped elastic piece (131); The sleeve (12) is provided with arc-shaped grooves (125) on both sides of one end close to the control knob (31), and the arc-shaped pulling blocks (4) are provided in the arc-shaped pulling blocks (4). The end of the arc-shaped pulling blocks (4) away from the sleeve (12) is provided with a pulling arm (41), and the middle of the arc-shaped pulling block (4) is fixedly connected to the arc-shaped groove (125) via a second return spring (42); The pulling arm (41) is provided on a side of the arc-shaped pulling block (4) close to the control knob (31), and when the control knob (31) rotates, the two arc-shaped pulling blocks (4) move toward or away from each other; An annular groove (126) is further provided on the outer wall of the sleeve (12), an outer thread (1261) is provided on the inner wall of the annular groove (126), an inner thread (311) matching the outer thread (1261) is provided on the inner wall of the control knob (31), and the height of the annular groove (126) is greater than the height of the control knob (31); The arc groove (125) and the annular groove (126) are connected via a sliding hole (45), a wedge block (43) is slidably provided in the sliding hole (45), one end of the wedge block (43) is fixedly connected to a side wall of the arc groove (125) via a third return spring (44), and the other end of the third return spring (44) is in contact with the control knob (31).

2. The transgastric laparoscopic surgical puncture device with anti-slip fixing function according to claim 1, characterized in that: An arc-shaped sliding groove (33) is provided inside one end of the control knob (31) close to the arc-shaped spring piece (131), and a plurality of sliding beads (34) corresponding to the first pull rope (32) are provided in the arc-shaped sliding groove (33). The first pull rope (32) passes through the arc-shaped sliding groove (33) and is fixedly connected to the corresponding sliding beads (34).

3. The transgastric laparoscopic surgical puncture device with anti-slip fixing function according to claim 1, characterized in that: The inner wall of the sleeve (12) is provided with a channel (122) for the first pull rope (32) to pass through, and one end of the channel (122) corresponds to the middle of the inner wall of the arc-shaped spring piece (131). The outer wall of the first pull rope (32) located in the groove (121) is provided with a first return spring (35), and the two ends of the first return spring (35) are fixedly connected to the middle of the arc-shaped spring piece (131) and the inner wall of the groove (121), respectively.

4. The transgastric laparoscopic surgical puncture device with anti-slip fixing function according to claim 1, characterized in that: Slide grooves (123) are respectively provided on both sides of the inner wall of the groove (121), and a slider (124) is provided in the slide groove (123). The opposite side walls of the slider (124) are respectively fixedly connected to the two ends of the arc-shaped spring piece (131).

5. The transgastric laparoscopic surgical puncture device with anti-slip fixing function according to claim 1, characterized in that: The number of the grooves (121) and the arc-shaped elastic pieces (131) is at least three.

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