Laparoscopic puncture suture device

Abstract

The present application relates to a kind of laparoscopic puncture suture device, including puncture cone and puncture sleeve, the puncture sleeve includes sleeve, annular mark is provided on the sleeve, the sleeve is also provided with protrusion and accommodating hole, the sleeve is provided with connecting portion near the bottom of sleeve one end, the accommodating cavity is provided on the connecting portion, the suture needle is provided in the accommodating cavity, the suture needle is connected with pull wire, when pulling pull wire, the suture needle can be driven along the protrusion into accommodating hole.The puncture suture device in the present application can realize suture operation without using suture device, compared with traditional puncture device, can reduce operation steps, reduce the use of surgical instruments, so as to improve surgical efficiency, reduce surgical risk.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and in particular relates to a laparoscopic puncture and suturing device. Background Technology

[0002] Laparoscopic trocars are mainly used in minimally invasive surgery to perform pneumoperitoneum and establish surgical access within the abdominal cavity. During the puncture procedure, a trocar is inserted into the trocar cannula. After puncture, the trocar needs to be withdrawn from the trocar cannula. During this withdrawal, tremors in the hands of medical staff can cause secondary damage to the wound. Current laparoscopic trocars lack suturing capabilities. After surgery, sutures are required to close the patient's wound, involving the use of numerous instruments, which is not only cumbersome and reduces surgical efficiency but also increases surgical risks. Therefore, current techniques still have shortcomings and deficiencies. Summary of the Invention

[0003] The purpose of this invention is to provide a laparoscopic puncture suture device to solve the problem that existing laparoscopic puncture devices do not have suturing functions, and that suture devices are needed to suture the patient's tissue wounds after surgery.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows:

[0005] A laparoscopic puncture and suturing device is provided, comprising a puncture cone and a puncture cannula. The puncture cannula includes a sleeve with annular grooves, a protrusion, and a receiving hole. A connecting portion is provided at one end of the sleeve near the bottom, and a receiving cavity is provided on the connecting portion. A suture needle is placed in the receiving cavity, and a pull thread is connected to the suture needle. When the pull thread is pulled, the suture needle can be driven along the protrusion into the receiving hole. A limit knot is provided on the pull thread. A guide is also provided on the sleeve, and a guide hole is provided on the guide. The diameter of the guide hole is smaller than the diameter of the limit knot. A notch is provided on the guide, and the notch communicates with the guide hole.

[0006] Furthermore, a puncture cone extractor is provided for removing the puncture cone, a ring of outward protrusion is provided on the top side of the cannula seat, a ring of groove is provided on the top of the outward protrusion, an adjustable hydraulic pump is provided on the top of the puncture cone extractor, and a ring of reinforcing plate is provided around the adjustable hydraulic pump.

[0007] The adjustable hydraulic pump is equipped with a pressing rod, a gripping plate is fixedly installed at the bottom of the pressing rod, a finger pressing plate is fixedly installed at the top of the pressing rod, a magnetic sheet is fixedly installed at the top of the sealing cover, and a magnetic sheet is fixedly installed at the bottom of the gripping plate.

[0008] Furthermore, when the suture needle is pulled out of the accommodating cavity by pulling the suture thread, the limiting knot on the suture thread can abut against the guide hole on the guide member.

[0009] Furthermore, the annular groove of the sleeve is provided with a draw wire groove.

[0010] Furthermore, the protrusion of the sleeve is provided with a pull groove, which is located on the side of the protrusion.

[0011] Furthermore, the hydraulic pump is equipped with an execution chip, which includes fingerprint recognition, fingerprint recording, and drive recognition. The fingerprint recording is used to record the fingerprints of the medical personnel who used the puncture cone extraction device, including one principal and one assistant. The fingerprint recognition is used by the execution chip to recognize the fingerprints of the personnel who used the puncture cone extraction device.

[0012] The fingerprint reader and pressure sensor are arranged sequentially from top to bottom on the top of the finger pressing plate.

[0013] Furthermore, the suture needle includes a needle tip and a needle tail, and the drawstring is connected to the needle tail of the suture needle.

[0014] Furthermore, the tail of the suture needle is accommodated within the receiving cavity, the tip of the suture needle abuts against the protrusion, and the foremost tip of the needle extends beyond the highest point of the protrusion.

[0015] Furthermore, there are two suture needles, and no pull thread is provided on the suture needles. The two suture needles are connected together by a suture thread.

[0016] Furthermore, the puncture cannula also includes a cannula seat, which communicates with the cannula. The cannula seat is equipped with an air injection switch, and the air injection switch is equipped with an air injection valve. A disinfection box is embedded in one side of the air injection valve. A spray plate is provided at the bottom of the disinfection box. The function of the spray plate is to inject the disinfectant in the disinfection box into the air injection channel during puncture. A micro pump is provided inside the disinfection box, and a button is provided on the top of the disinfection box. The button is used to control the start and stop of the micro pump.

[0017] The beneficial effects of the present invention by adopting the above technical solution are as follows:

[0018] The laparoscopic puncture and suturing device of this invention includes a puncture cone and a puncture cannula. The puncture cannula includes a sleeve with annular grooves, a protrusion, and a receiving hole. A connecting part is provided at one end of the sleeve near the bottom, and a receiving cavity is provided on the connecting part. A suture needle is placed in the receiving cavity, and a pull suture is connected to the suture needle. When the pull suture is pulled, the suture needle can be driven along the protrusion into the receiving hole. By pulling the pull suture, the suture needle can be moved to suture the tissue wound without the need for a suture device. Compared with traditional laparoscopic puncture devices, it can reduce the number of operation steps and the use of surgical instruments, thereby improving surgical efficiency and reducing surgical risks and patient suffering.

[0019] By setting up a puncture cone extractor, the slight tremor of the human hand during the manual removal of the puncture cone may cause the puncture cone to be removed along a non-linear trajectory. Alternatively, to avoid errors during manual removal of the puncture cone, a mechanical device can be used to remove the puncture cone, thereby improving the success rate of puncture cone removal and ensuring a stable and undisturbed process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the laparoscopic puncture and suturing device in this invention.

[0021] Figure 2 for Figure 1 An exploded view of the laparoscopic puncture and suturing device shown.

[0022] Figure 3 for Figure 1 The laparoscopic puncture and suturing device shown is a cross-sectional view.

[0023] Figure 4 for Figure 1 A cross-sectional view of the laparoscopic puncture and suturing device from another angle.

[0024] Figure 5 This is a schematic diagram of the puncture cannula in this invention.

[0025] Figure 6 This is a schematic diagram of the suture needle in this invention.

[0026] Figure 7 This is a schematic diagram of the puncture cone extraction device.

[0027] Figure 8 for Figure 7 The diagram shows the structure of the finger pressing plate.

[0028] Figure 9 for Figure 3 A magnified structural diagram of region A in the middle.

[0029] Figure 10 for Figure 7 A magnified structural diagram of region B in the middle.

[0030] Reference numerals: 10. Puncture cone; 11. Rod body; 12. Sealing cap; 13. Cone tip; 20. Puncture cannula; 21. Cannula seat; 211. Inflation switch; 212. Inflation valve; 22. Cannula; 221. Annular groove; 222. Protrusion; 223. Receiving hole; 224. Connecting part; 2241. Receiving cavity; 23. Suture needle; 231. Needle tip; 232. Needle tail; 225. Pull-out groove; 226. Guide component; 2261. Guide hole; 2262. Notch; 30. Outer protrusion plate; 31. Puncture cone extractor; 32. Adjustable hydraulic pump; 33. Finger pressing plate; 34. Pressing rod; 35. Grip plate; 351. Magnetic sheet one; 352. Magnetic sheet two; 36. Reinforcing plate; 37. Pressure sensor; 38. Fingerprint reader; 39. Electronic box; 40. Disinfection box; 41. Spray disc; 42. Channel; 43. Micro pump; 44. Button. Detailed Implementation

[0031] To make the technical problem to be solved, the technical solution, and the beneficial effects of this invention clearer, the invention will now be described in detail with reference to the accompanying drawings. This drawing is a simplified schematic diagram, illustrating only the basic aspects of the invention, and therefore only shows the components relevant to the invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0032] like Figure 1 As shown, the present invention provides a laparoscopic puncture and suturing device, which includes a puncture cone 10 and a puncture cannula 20.

[0033] like Figures 1 to 4 , Figure 9 As shown, the puncture cone 10 includes a rod body 11, a sealing cap 12 disposed at the top of the rod body 11, and a cone head 13 disposed at the bottom of the rod body 11. The cone head 13 is conical in shape, and a puncture portion (not shown) is disposed on the side of the cone head 13. The puncture portion is blade-shaped. By providing the puncture portion, it is easy for the cone head 13 to puncture the patient's abdominal skin during use.

[0034] like Figures 1 to 5As shown, the puncture cannula 20 includes a cannula seat 21 and a cannula 22. The cannula seat 21 is fixed and connected to the cannula 22. The cannula 22 has an annular groove 221 on its outside, which serves as a seal. An air injection switch 211 is provided on the side of the cannula seat 21 for injecting air during puncture. An air injection valve 212 is provided at the air injection switch 211. A disinfection box 40 is embedded on one side of the air injection valve 212. A spray plate 41 is provided at the bottom of the disinfection box 40. The function of the spray plate 41 is to inject the disinfectant in the disinfection box 40 into the air injection channel 42 during puncture. A micro pump 43 is provided in the disinfection box 40. A button 44 is provided on the top of the disinfection box 40. The button 44 is used to control the start and stop of the micro pump 43. In this embodiment, before using the puncture cone 10, the button 44 is manually pressed to start the micro pump 43. The micro pump 43 sprays disinfectant intermittently according to a pre-set program. The amount of disinfectant sprayed at one time is small, so that the disinfectant in the disinfection box 40 can be used for a sufficient time. The purpose of spraying disinfectant into the channel 42 is to purify the gas in the channel and reduce the probability of infection events caused by air injection.

[0035] The sleeve 22 is provided with a protrusion 222. In this embodiment, the protrusion 222 is approximately arc-shaped. The sleeve 22 is provided with two receiving holes 223, which are symmetrically distributed about the sleeve 22. The position of the receiving holes 223 on the sleeve 22 is above the position of the protrusion 222 on the sleeve 22. In this embodiment, the shape of the receiving hole 223 is approximately rectangular, but the shape of the receiving hole 223 is not limited to this. It can be an ellipse, a rhombus, or other regular shapes or irregular shapes, etc., and is not specifically limited. Two connecting portions 224 are provided near the bottom of the sleeve 22, symmetrically arranged on the outer side of the sleeve 22. Each connecting portion 224 has a receiving cavity 2241 along the axial direction of the sleeve 22. A suture needle 23 is disposed within each receiving cavity 2241, and a pull thread (not shown) is connected to the suture needle 23. In this embodiment, the suture needle 23 is made of a highly elastic yarn material, allowing it to deform. When the suture needle 23 is completely pulled out of the receiving cavity 2241 by the pull thread, it returns to its initial shape. Figure 6As shown, the initial shape of the suture needle 23 is hook-shaped. Specifically, the suture needle 23 includes a needle tip 231 and a needle tail 232, and the pull line is connected to the needle tail 232 of the suture needle 23. When the suture needle 23 is placed in the receiving cavity 2241, the needle tail 232 of the suture needle 23 is completely contained within the receiving cavity 2241, and the pull line at the needle tail 232 extends out from the receiving cavity 2241. The needle tip 231 of the suture needle 23 abuts against the protrusion 222, and the foremost tip of the needle tip 231 extends beyond the highest point of the protrusion 222. With this arrangement, it is easy to pull the suture needle 23 out of the receiving cavity 2241 by pulling the pull line, avoiding the protrusion 222 from obstructing the needle tip 231 and thus affecting the pulling out of the suture needle 23. A limit knot is also provided on the pull line.

[0036] like Figures 1 to 5 As shown, the outer sidewall of the cannula 22 is also provided with guide members 226. There are two guide members 226, which are symmetrically distributed. Each guide member 226 has a guide hole 2261. The diameter of the guide hole 2261 is larger than the diameter of the pull wire, and smaller than the diameter of the upper limit knot of the pull wire. When the pull wire is pulled to pull out the suture needle 23, as the pull wire moves along the guide hole 2261, the limit knot moves to the guide hole 2261. When the pull wire is pulled, the limit knot cannot pass through the guide hole 2261. At this time, it means that the suture needle 23 has moved to the appropriate position, that is, the needle tip 231 of the suture needle 23 has passed through the tissue of the patient's abdominal wall and entered the interior of the cannula 22 through the receiving hole 223.

[0037] In some embodiments, the two suture needles 23 are not equipped with pull sutures, and the two suture needles 23 are directly connected together by sutures. With this arrangement, when performing suturing, medical personnel do not need to use sutures to connect the two pull sutures together, thereby reducing the operation of medical personnel during the suturing process and improving suturing efficiency by reducing operation steps.

[0038] In some of these embodiments, such as Figure 5 As shown, a pull wire groove 225 is provided on the protrusion 222 on the outer side of the sleeve 22. The groove 225 is used to accommodate the pull wire. Specifically, the pull wire groove 225 is provided on the side of the protrusion 222. By providing the pull wire groove 225, the pull wire can move along the pull wire groove 225 when it is pulled, thereby limiting the movement of the pull wire.

[0039] In some of these embodiments, such as Figure 5As shown, a pull-wire groove 225 is also provided on the annular groove 221 outside the sleeve 22. The groove 225 is used to accommodate the pull wire. Specifically, the pull-wire groove 225 extends along the axial direction of the sleeve 22. By providing the pull-wire groove 225, the pull wire can move along the pull-wire groove 225 when pulled, thereby limiting the movement of the pull wire. Since the pull-wire groove 225 on the annular groove 221 is shallow, it can only accommodate the pull wire and therefore will not affect the seal between the sleeve 22 and the patient's abdominal wall tissue and skin.

[0040] In some of these embodiments, such as Figure 4 As shown, the guide member 226 is also provided with a notch 2262. The notch 2262 is provided on one side of the guide member 226 and is connected to the guide hole 2261 on the guide member 226. By providing the notch 2262, the pull wire can enter the guide hole 2261 from the side of the guide member 226.

[0041] In some embodiments, the sleeve 22 does not have a connecting part 224 and a protrusion 222. Instead, the sleeve 22 has an umbrella-shaped opening structure, and the suture needle 23 is disposed on the umbrella-shaped opening structure. The umbrella-shaped opening structure is in a closed state. When the suture needle 23 needs to be pulled, the umbrella-shaped opening structure is in an open state. The suture needle 23 can be inserted into the receiving hole 223 by pulling the suture needle 23 with a pull line.

[0042] The working principle of the laparoscopic puncture and suturing device provided by the present invention is as follows: Compared with the traditional puncture device in the prior art, after the patient has undergone surgery using a puncture device, the wound on the patient's abdomen needs to be sutured together using a suturing device. However, the puncture and suturing device of the present invention can achieve the suturing operation without the need for a suturing device. Compared with the traditional puncture device, it can reduce the operation steps and the use of surgical instruments, thereby improving surgical efficiency and reducing surgical risks.

[0043] First, remove the laparoscopic puncture and suture device. Connect the sutures on the two suture needles 23 together using the suture thread. Then, the puncture device can be used for puncture. When the surgery is finished and the wound needs suturing, pull the suture thread to pull the suture needle 23 out of the receiving cavity 2241. As the suture thread moves along the guide hole 2261, the limiting knot moves to the guide hole 2261. Continue pulling the suture thread; if the limiting knot cannot pass through the guide hole 2261, it indicates that the suture needle 23 has moved to the appropriate position, meaning the needle tip 231 of the suture needle 23 has penetrated the patient's abdominal wall tissue and entered the cannula 22 through the receiving hole 223. Pull the suture thread to connect the two suture needles 23 together. After the suture needles 23 are pulled to the appropriate positions as described above, surgical tools such as surgical forceps are inserted into the cannula 22 from the top of the puncture cannula 20. The suture needles 23 are then grasped by the surgical forceps and pulled out from the inside of the puncture cannula 20 through the top of the cannula seat 21. After both suture needles 23 have been pulled out from the inside of the cannula 22 by the surgical forceps, the puncture cannula 20 is removed from the patient's wound. The suture is then tightened, and the wound is closed with the suture. Finally, the suture is cut with surgical scissors.

[0044] like Figure 7 , Figure 8 and Figure 10As shown, the laparoscopic puncture suture device provided by this invention also includes a matching puncture cone extractor 31. During manual removal of the puncture cone 10, slight hand tremors may cause the puncture cone 10 to be removed along a non-linear trajectory. To avoid errors during manual removal of the puncture cone 10, a mechanical device is used to remove the puncture cone 10, improving the success rate of removal and ensuring a stable and stable process. A ring of outwardly protruding plates 30 is provided on the top side of the cannula seat 21, and a ring of grooves is provided on the top of the outwardly protruding plates 30. The grooves are of varying depths and do not penetrate the outwardly protruding plates 30. The puncture cone is then removed... An adjustable hydraulic pump 32 is installed at the top of the puncture cone extractor 31. A reinforcing plate 36 is installed around the adjustable hydraulic pump 32 to fix the adjustable hydraulic pump 32 in place. The function of the adjustable hydraulic pump 32 is to provide hydraulic resistance for the movement of the pressing rod 34 and to automatically assist the pressing rod 34 in resetting. The pressing rod 34 is installed on the adjustable hydraulic pump 32. A gripping plate 35 is fixedly installed at the bottom of the pressing rod 34, and a finger pressing plate 33 is fixedly installed at the top of the pressing rod 34. The method of using the puncture cone extractor 31 is as follows: after the puncture cone 10 is used, the medical staff inserts the puncture cone extractor 31 along the groove. The groove is designed to both secure the puncture cone extractor 31 and restrict the position of the pressing rod 34, ensuring that the pressing rod 34 and the sealing cover 12 are on the same vertical line. A magnetic sheet 351 is fixedly installed on the top of the sealing cover 12, and a magnetic sheet 352 is fixedly installed on the bottom of the gripping plate 35. Medical personnel place their free fingers on the finger pressing plate 33 and press it down. The finger pressing plate 33 moves down, causing the pressing rod 34 to move down, which in turn moves the pressing plate 33 down, until the pressing plate 33 and the sealing cover 12 are connected together by the magnetic sheets. Medical staff release their fingers from the finger press plate 33, and the adjustable hydraulic pump 32 drives the press rod 34 to move upward. The upward movement of the press rod 34 drives the grasping plate 35 to move upward, and the sealing cover 12, which is magnetically connected to the grasping plate 35, also moves upward. As the sealing cover 12 moves upward, the puncture cone 10 moves upward a certain distance. The press rod 34 moves upward by the distance of the adjustable hydraulic pump 32, which drives the puncture cone 10 out of the human body. Then, the medical staff removes the puncture cone extractor 31 from the groove. The advantage is that when the puncture cone 10 is partially removed from the human body, the puncture cone 10 is in a relatively stable state, reducing the probability of the puncture cone 10 damaging the wound.

[0045] An execution chip is installed in the adjustable hydraulic pump 32. The execution chip includes fingerprint recognition, fingerprint recording, and drive recognition. Fingerprint recording involves registering the fingerprints of the medical personnel who will use the puncture cone extractor 31, including one principal and one assistant, to avoid situations where the principal is unable to use the puncture cone extractor 31 in case of emergencies. Fingerprint recognition involves the execution chip identifying the fingerprint of the person using the puncture cone extractor 31. If the fingerprint matches the pre-recorded fingerprint, the execution chip drives the adjustable hydraulic pump 32 to operate. Drive recognition is based on the pressure sensor 37 located on the top of the finger pressing plate 33. The movement direction of the pressing rod 33 is identified. If the pressure sensor 37 displays a pressure value, it indicates that the pressing rod 33 has a downward trend or is moving downward. The adjustable hydraulic pump 32 is driven to operate to control the descent speed of the pressing rod 33 and prevent the pressing rod 33 from falling too fast and impacting the sealing cover 12. If the pressure sensor 37 does not display a pressure value, it indicates that the gripping plate 35 has been connected to the sealing cover 12. The adjustable hydraulic pump 32 is driven to reset the pressing rod 33. The process of resetting the pressing rod 33 is the process of driving the puncture cone 10 out of the human body.

[0046] A fingerprint reader 38 is installed on the top of the finger pressing plate 33. The fingerprint reader 38 and the pressure sensor 37 are arranged sequentially from top to bottom. The operation of the execution chip and the adjustable hydraulic pump 32 is powered by the electronic box 39 installed on the puncture cone extractor 31. Electronics are installed in the electronic box 39.

[0047] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] It should be understood that the terms "length", "width", "up", "down", "front and back", "left and right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and are not intended to 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 present invention.

[0049] The above description, based on the preferred embodiments of the present invention, provides guidance. Those skilled in the art can make various changes and modifications without departing from the scope of the invention. The technical scope of this invention is not limited to the contents of the specification but must be determined according to the claims.

Claims

1. A laparoscopic puncture and suturing device, characterized in that: The device includes a puncture cone and a puncture cannula. The puncture cone includes a rod, a sealing cap at the top of the rod, and a cone head at the bottom of the rod. The puncture cannula includes a cannula and a cannula seat. The cannula has annular grooves, a protrusion, and a receiving hole. A connecting part is provided at one end of the cannula near the bottom. The connecting part has a receiving cavity. A suture needle is placed in the receiving cavity. A pull wire is connected to the suture needle. When the pull wire is pulled, the suture needle can be driven along the protrusion into the receiving hole. A limit knot is provided on the pull wire. A guide is provided on the cannula. The guide has a guide hole with a diameter smaller than the diameter of the limit knot. The guide has a notch that communicates with the guide hole. The removal of the puncture cone is equipped with a puncture cone extractor. A ring of outward protrusion is provided on the top side of the cannula seat. A ring of groove is provided on the top of the outward protrusion. The puncture cone extractor is embedded in the groove and fixed thereto. An adjustable hydraulic pump is provided on the top of the puncture cone extractor. A ring of reinforcing plate is provided around the adjustable hydraulic pump. The adjustable hydraulic pump is equipped with a pressing rod, a gripping plate is fixedly installed at the bottom of the pressing rod, a finger pressing plate is fixedly installed at the top of the pressing rod, a magnetic sheet is fixedly installed at the top of the sealing cover, and a magnetic sheet is fixedly installed at the bottom of the gripping plate. The magnetic sheet and the magnetic sheet are of opposite magnetic properties.

2. The laparoscopic puncture and suturing device according to claim 1, characterized in that: When the suture needle is pulled out of the accommodating cavity by pulling the suture thread, the limiting knot on the suture thread can abut against the guide hole on the guide member.

3. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The sleeve has a pull groove on its annular pattern.

4. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The sleeve has a pull groove on its protrusion, and the pull groove is located on the side of the protrusion.

5. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The hydraulic pump is equipped with an execution chip, which includes fingerprint recognition, fingerprint recording, and drive recognition. The fingerprint recording is used to record the fingerprints of the medical staff who used the puncture cone extraction device, including one principal and one assistant. The fingerprint recognition is used by the execution chip to recognize the fingerprints of the personnel who used the puncture cone extraction device. The fingerprint reader and pressure sensor are arranged sequentially from top to bottom on the top of the finger pressing plate.

6. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The suture needle includes a needle tip and a needle tail, and the drawstring is connected to the needle tail of the suture needle.

7. The laparoscopic puncture and suturing device according to claim 6, characterized in that: The tail of the suture needle is accommodated within the receiving cavity, the tip of the suture needle abuts against the protrusion, and the foremost tip of the needle extends beyond the highest point of the protrusion.

8. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The number of suture needles is two, and no pull thread is provided on the suture needles. The two suture needles are connected together by suture thread.

9. The laparoscopic puncture and suturing device according to claim 1, characterized in that: The puncture cannula also includes a cannula seat, which is connected to the cannula. The cannula seat is equipped with an air injection switch and an air injection valve. A disinfection box is embedded in one side of the air injection valve. A spray plate is provided at the bottom of the disinfection box. The function of the spray plate is to inject disinfectant from the disinfection box into the air injection channel during puncture. A micropump is provided inside the disinfection box. A button is provided on the top of the disinfection box to control the start and stop of the micropump.

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