Puncture outfit for endoscopic surgery

Abstract

The puncture outfit comprises a puncture cannula, the puncture cannula is provided with a working channel and an air-water injection port communicated with the working channel, an air-water diverter valve is arranged in the working channel, and the air-water diverter valve is provided with an insertion channel, a storage cavity and a plurality of diverter holes. The insertion channel is communicated with the working channel, the storage cavity is arranged on the outer periphery of the insertion channel in a surrounding mode and communicated with the insertion channel through the multiple flow dividing holes, the storage cavity is communicated with the air-water injection port, and the multiple flow dividing holes are distributed in the circumferential direction of the insertion channel at intervals. The endoscope can be flushed without being drawn out, and use is convenient.

Description

Technical Field

[0001] The invention relates to a trocar, in particular to a trocar used for laparoscopic surgery. Background Art

[0002] Laparoscopic surgery is a minimally invasive surgery, which means using an endoscope to extend into the abdominal cavity through the puncture hole of the trocar, projecting the image captured by the lens onto a monitor via an optical fiber, and then the doctor performs the surgery by observing the monitor screen. During laparoscopic surgery, a channel is established on the abdominal wall through the puncture cannula and puncture core of the trocar, so that surgical instruments and endoscopes can enter the abdominal cavity through this channel for surgical operations.

[0003] During laparoscopic surgery, the endoscope needs to maintain stable clarity at all times. However, due to the difference between the temperature of the carbon dioxide gas used for pneumoperitoneum entering the abdominal cavity and the temperature inside the abdominal cavity, as well as the heat generated by the energy knife during laparoscopic surgery, fog often forms on the endoscope entering the abdominal cavity, which can cause the lens of the laparoscopic endoscope to blur. In addition, after the endoscope enters the abdominal cavity, it may touch the bleeding tissue in the abdominal cavity, causing blood stains on the lens, which can also cause contamination of the endoscope.

[0004] In the prior art, when the endoscope is blurred or contaminated, it is usually necessary to pull the endoscope out of the puncture cannula, wipe it clean, and then reinsert it into the puncture hole of the puncture cannula to continue the operation. However, since the factors that cause the endoscope to be blurred and contaminated still exist, when the endoscope is reinsert into the puncture cannula for a period of time, it will still become blurred or contaminated. During the operation, the endoscope may even be contaminated within less than half a minute after being inserted into the puncture cannula. As a result, during the entire laparoscopic operation, the endoscope needs to be repeatedly pulled out and wiped, which is inconvenient to use and affects the smooth progress of the operation. Summary of the invention

[0005] The present invention aims to solve the above-mentioned technical problems and provides a puncture device for laparoscopic surgery, which can flush the endoscope without pulling out the endoscope and is easy to use.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A puncture device for laparoscopic surgery comprises a puncture sleeve, the puncture sleeve is provided with a working channel and an air-water injection port connected to the working channel, an air-water diverter valve is installed in the working channel, the air-water diverter valve is provided with an insertion channel, a storage cavity and a plurality of diversion holes, the insertion channel is connected to the working channel, the storage cavity is arranged around the outer periphery of the insertion channel and is connected to the insertion channel through a plurality of the diversion holes, the storage cavity is connected to the air-water injection port, and the plurality of the diversion holes are distributed at intervals along the circumference of the insertion channel.

[0008] Furthermore, the gas-water diverter valve comprises a first valve sleeve, a second valve sleeve and a third valve sleeve which are sequentially connected and coaxially arranged, the inner cavity of the first valve sleeve, the inner cavity of the second valve sleeve and the inner cavity of the third valve sleeve together constitute the insertion channel, the outer peripheral wall of the first valve sleeve and the outer peripheral wall of the third valve sleeve are both in sealing contact with the inner wall of the working channel, the outer peripheral wall of the second valve sleeve is spaced apart from the puncture sleeve to form the storage chamber; a plurality of the diverter holes are spaced apart on the second valve sleeve.

[0009] Furthermore, the second valve sleeve is connected to the bottom surface of the first valve sleeve and the top surface of the third valve sleeve, and the outer diameter of the second valve sleeve is smaller than the outer diameter of the bottom surface of the first valve sleeve and the outer diameter of the top surface of the third valve sleeve, thereby forming an inner recess on the outer wall of the gas-water diverter valve, and the inner recess constitutes the storage chamber.

[0010] Furthermore, a spiral groove is provided on the inner concave portion, and the diversion hole is provided at the spiral groove.

[0011] Furthermore, at least one water retaining convex strip is provided between two adjacent diversion holes, and a plurality of the water retaining convex strips are distributed at intervals along the circumference of the inner recess.

[0012] Furthermore, a first mounting groove is recessed on the outer peripheral wall of the first valve sleeve, the first mounting groove extends along the circumference of the first valve sleeve, a first sealing ring is arranged in the first mounting groove, and the first sealing ring is in sealing contact with the inner wall of the puncture sleeve.

[0013] Furthermore, a second mounting groove is recessed on the outer peripheral wall of the third valve sleeve, the second mounting groove extends along the circumference of the third valve sleeve, a second sealing ring is arranged in the second mounting groove, and the second sealing ring is in sealing contact with the inner wall of the puncture sleeve.

[0014] Furthermore, the gas-water injection port is connected to a gas-water injection pipe, and a gas-water injection valve is installed on the gas-water injection pipe.

[0015] Furthermore, the trocar further comprises an air-water injection assembly, which comprises a main connecting pipe, a first three-way joint, an insufflation tube, a second three-way joint, a connecting pipe, a first flushing branch pipe, and a second flushing branch pipe;

[0016] One end of the main connecting pipe is connected to the gas-water injection pipe, and the other end of the main connecting pipe is connected to the first interface of the first three-way joint;

[0017] One end of the pneumoperitoneum tube is connected to the second interface of the first three-way connector through a first one-way valve, and the other end of the pneumoperitoneum tube is used to connect to a carbon dioxide pneumoperitoneum machine;

[0018] One end of the connecting pipe is connected to the third interface of the first three-way joint through a second one-way valve, and the other end of the connecting pipe is connected to the first interface of the second three-way joint;

[0019] One end of the first flushing branch pipe is connected to the second interface of the second three-way joint, a third one-way valve is installed on the first flushing branch pipe, and the other end of the first flushing branch pipe is used to connect to a container filled with flushing liquid;

[0020] One end of the second flushing branch pipe is connected to the third interface of the second three-way connector, and the other end of the second flushing branch pipe is used to connect to the negative pressure suction syringe.

[0021] Furthermore, the first one-way valve, the second one-way valve and the third one-way valve are all Luer one-way connectors.

[0022] Furthermore, the gas-water injection assembly also includes a protective cover, and the first three-way joint, the second three-way joint, the first one-way valve, the second one-way valve and the third one-way valve are all installed in the protective cover.

[0023] Furthermore, the puncture device includes a sleeve seat, an air-blocking valve and a conversion cap, and the sleeve seat is provided with a avoidance notch; the puncture sleeve is passed through the sleeve seat, and the gas-water injection tube extends out of the sleeve seat through the avoidance notch; the air-blocking valve is installed on the puncture sleeve, and the conversion cap is installed on the sleeve seat, and the air-blocking valve is pressed against the puncture sleeve.

[0024] Due to the adoption of the above technical solution, the present invention has the following beneficial effects:

[0025] 1. The puncture device used for laparoscopic surgery is provided with an air-water diverter valve in the puncture sleeve. When the endoscope inserted into the puncture sleeve is blurred or contaminated, a flushing liquid such as saline can be introduced into the storage cavity through the air-water injection port. The flushing liquid entering the storage cavity flows to the endoscope along the insertion channel through the diverter hole, thereby flushing the endoscope, achieving the purpose of flushing the endoscope without pulling out the endoscope. At the same time, since a number of diverter holes are distributed at intervals along the circumference of the insertion channel, the flushing liquid can be diverted to various positions of the endoscope through the diverter holes, ensuring that all positions of the endoscope can be flushed and cleaned more thoroughly. In addition, the air-water diverter valve is provided in the puncture sleeve, which will not increase the overall volume of the puncture device.

[0026] 2. The puncture device for laparoscopic surgery also includes a gas-water injection component. The gas-water injection component can isolate the injection of carbon dioxide gas for pneumoperitoneum and the injection process of flushing liquid by setting a first one-way valve and a second one-way valve, preventing the injected gas from entering the container containing flushing liquid or the injected flushing liquid from entering the pneumoperitoneum tube, so that the injection of gas and flushing liquid will not affect each other. The doctor can also inject gas or flushing liquid into the puncture device at the same time as needed to improve work efficiency. By setting a third one-way valve, the negative pressure suction syringe can draw flushing liquid from the container into the negative pressure suction syringe during the process of withdrawing the piston, and when the negative pressure suction syringe pushes the piston forward, the flushing liquid in the negative pressure suction syringe can be pushed into the gas-water injection port instead of entering the container containing flushing liquid. In the process of injecting gas or flushing liquid into the puncture sleeve, the gas-water injection component does not need to operate the valve to control the flow direction of the fluid, and is more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic structural diagram of a trocar according to a first embodiment of the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the cannula seat in the puncture device shown;

[0029] Figure 3 for Figure 1 A schematic diagram of the structure of a conversion cap in the trocar shown;

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the puncture sleeve in the puncture device shown;

[0031] Figure 5 for Figure 1 A top view of

[0032] Figure 6 It is a schematic structural diagram of a gas-water diverter valve according to a first embodiment of the present invention;

[0033] Figure 7 for Figure 6 A top view of

[0034] Figure 8 for Figure 7 Sectional view along line BB;

[0035] Fig. 9 for Figure 5 Section view along line AA;

[0036] Fig.10 It is a structural schematic diagram of the gas-water injection assembly according to the first embodiment of the present invention;

[0037] Fig.11 for Fig.10 A perspective structural diagram of a part of the structure;

[0038] Fig.12 It is a schematic structural diagram of the gas-water diverter valve in the trocar according to the second embodiment of the present invention;

[0039] Fig.13 It is a schematic structural diagram of a gas-water diverter valve in a trocar according to a third embodiment of the present invention;

[0040] In the accompanying drawings, 100, puncture device; 10, sleeve seat; 11, receiving chamber; 12, avoidance gap; 13, first opening; 14, second opening; 20, puncture sleeve; 21, working channel; 22, air and water injection port; 221, air and water injection pipe; 223, air and water injection valve; 23, installation cylinder; 231, receiving part; 233, through-hole; 24, connecting tube body; 40, air blocking valve; 41, notch part; 50, conversion cap; 51, puncture hole; 60, air and water diverter valve; 61, insertion channel; 63, storage chamber; 65, diverter hole; 66, first valve sleeve; 661, insertion opening; 662, first mounting groove; 663, positioning part; 67, second valve sleeve; 671, spiral groove; 673, water retaining convex strip; 68, third valve sleeve; 681, connecting opening; 682, The second installation groove; 683, the avoidance gap; 70, the first sealing ring; 80, the second sealing ring; 90, the air-water injection assembly; 91, the main connecting pipe; 911, the first joint; 912, the second joint; 921, the first three-way joint; 922, the second three-way joint; 923, the first interface; 924, the second interface; 925, the third interface; 93, the insufflation tube; 94, the connecting pipe; 95, the first flushing branch pipe; 951, the first tube body; 953, the second tube body; 96, the second flushing branch pipe; 971, the first one-way valve; 972, the second one-way valve; 973, the third one-way valve; 981, the first Luer one-way female connector; 982, the second Luer one-way female connector; 99, the protective cover; 200, the carbon dioxide insufflation machine; 300, the container; 400, the negative pressure suction syringe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0044] See also Figure 1 , Figure 5 and Fig. 9 The first embodiment of the present invention provides a puncture device 100 for laparoscopic surgery, including a sleeve seat 10, a puncture sleeve 20, a gas-water shunt valve 60, a gas-blocking valve 40 and a conversion cap 50. The puncture sleeve 20 is inserted into the sleeve seat 10, the gas-water shunt valve 60 is installed in the puncture sleeve 20, the gas-blocking valve 40 is installed on the puncture sleeve 20, and the conversion cap 50 is installed on the sleeve seat 10, and the gas-blocking valve 40 is pressed against the puncture sleeve 20. It can be understood that the puncture device 100 may also include other components, such as a puncture core, etc. This part belongs to the prior art and is not repeated here for the sake of space omission.

[0045] Please also see Figure 2 In this embodiment, the sleeve seat 10 is generally in a bowl-shaped structure, and a receiving cavity 11 is provided in the sleeve seat 10 and has a first opening 13 and a second opening 14 respectively located at two ends of the receiving cavity 11 and communicating with the receiving cavity 11. A side of the sleeve seat 10 is provided with a avoiding notch 12 communicating with the receiving cavity 11.

[0046] Please also see Figure 4The puncture sleeve 20 is provided with a working channel 21 and a gas and water injection port 22 connected to the working channel 21. Specifically, the puncture sleeve 20 includes a mounting cylinder 23 and a connecting tube 24 connected and connected to one end of the mounting cylinder 23. The outer diameter of the mounting cylinder 23 is larger than the outer diameter of the connecting tube 24. The mounting cylinder 23 is surrounded by a receiving portion 231, and the receiving portion 231 passes through the opposite ends of the mounting cylinder 23 to form a through-port 233 at the opposite ends of the mounting cylinder 23. One end of the connecting tube 24 is connected to the receiving portion 231 through a through-port 233, and the end of the connecting tube 24 away from the mounting cylinder 23 is an open end. The lumen of the connecting tube 24 and the receiving portion 231 together constitute the working channel 21, and the working channel 21 is used for inserting the puncture core and laparoscopic surgical instruments installed with an endoscope. The gas-water injection port 22 is provided on the peripheral wall of the installation cylinder 23 and communicates with the receiving chamber 11. In the present embodiment, a gas-water injection pipe 221 is fixedly connected to the gas-water injection port 22. The gas-water injection pipe 221 is provided with a gas-water injection valve 223 to control the on-off of the gas-water injection pipe 221. The gas-water injection valve 223 can adopt a valve structure used in the prior art to control the on-off of a pipeline, such as a plug valve, etc., which will not be described here for the sake of space saving. The puncture sleeve 20 penetrates the receiving chamber 11. Specifically, the installation cylinder 23 is installed in the receiving chamber 11 of the sleeve seat 10, the connecting pipe body 24 penetrates the second opening 14 to extend out of the sleeve seat 10, the gas-water injection pipe 221 penetrates the avoidance notch 12, and the gas-water injection valve 223 is located outside the sleeve seat 10 for easy operation. Specifically, during installation, the gas-water injection pipe 221 can be aligned with the avoidance notch 12, and the puncture sleeve 20 can be inserted from the first opening 13 of the sleeve seat 10 until the installation cylinder 23 is located in the accommodating cavity 11 of the sleeve seat 10, the connecting tube body 24 passes through the second opening 14 to extend out of the sleeve seat 10, and the gas-water injection pipe 221 passes through the avoidance notch 12 to extend out of the sleeve seat 10.

[0047] Please also see Figures 6 to 8 An air-water diverter valve 60 is installed in the working channel 21. The air-water diverter valve 60 is provided with an insertion channel 61, a storage cavity 63 and a plurality of diverter holes 65. The insertion channel 61 is communicated with the working channel 21 for allowing the puncture core and laparoscopic surgical instruments to pass through; the storage cavity 63 is arranged around the outer periphery of the insertion channel 61 and is communicated with the insertion channel 61 through a plurality of diverter holes 65. The storage cavity 63 is communicated with the air-water injection port 22, and the plurality of diverter holes 65 are distributed at intervals along the circumference of the insertion channel 61.

[0048] In this embodiment, the gas-water dividing valve 60 is installed in the receiving portion 231 of the mounting cylinder 23, and the gas-water dividing valve 60 includes a first valve sleeve 66, a second valve sleeve 67 and a third valve sleeve 68 which are connected in sequence and coaxially arranged. The inner cavity of the first valve sleeve 66, the inner cavity of the second valve sleeve 67 and the inner cavity of the third valve sleeve 68 are interconnected to jointly form the insertion channel 61, the insertion channel 61 is connected to the connecting pipe body 24, and the insertion channel 61 passes through the opposite ends of the gas-water dividing valve 60 to form an insertion opening 661 at the end of the first valve sleeve 66 away from the second valve sleeve 67, and form a connecting opening 681 at the end of the third valve sleeve 68 away from the second valve sleeve 67, and the insertion channel 61 is connected to the connecting pipe body 24 through the connecting opening 681.

[0049] In this embodiment, the outer peripheral wall of the first valve sleeve 66 and the outer peripheral wall of the third valve sleeve 68 are both in sealing contact with the inner wall of the puncture sleeve 20, and the outer peripheral wall of the second valve sleeve 67 is spaced apart from the puncture sleeve 20 to form a storage chamber 63. Specifically, the second valve sleeve 67 connects the bottom surface of the first valve sleeve 66 and the top surface of the third valve sleeve 68, and the outer diameter of the second valve sleeve 67 is smaller than the outer diameter of the bottom surface of the first valve sleeve 66 and the outer diameter of the top surface of the third valve sleeve 68, so that an inner concave portion is formed on the outer wall of the gas-water diverter 60, and the inner concave portion constitutes the storage chamber 63. A first mounting groove 662 is recessed on the outer peripheral wall of the first valve sleeve 66, and the first mounting groove 662 extends along the circumference of the first valve sleeve 66. A first sealing ring 70 is arranged in the first mounting groove 662, and the first sealing ring 70 is in sealing contact with the inner wall of the mounting cylinder 23 of the puncture sleeve 20. A second mounting groove 682 is recessed on the outer peripheral wall of the third valve sleeve 68, and the second mounting groove 682 extends along the circumference of the third valve sleeve 68. A second sealing ring 80 is arranged in the second mounting groove 682, and the second sealing ring 80 is in sealing contact with the inner wall of the mounting cylinder 23 of the puncture sleeve 20. The first sealing ring 70 and the second sealing ring 80 can prevent the gas or flushing liquid entering the storage chamber 63 from leaking from the storage chamber 63, thereby improving the sealing of the storage chamber 63. A plurality of diverter holes 65 are arranged at intervals on the second valve sleeve 67, and the diverter holes 65 connect the storage chamber 63 with the insertion channel 61. In this embodiment, the plurality of diverter holes 65 are divided into two groups, and the two groups of diverter holes 65 are arranged at intervals along the axial direction of the puncture sleeve 20. Each group of diverter holes 65 includes a plurality of diverter holes 65 arranged at intervals around the insertion channel 61, and the diverter holes 65 in the two groups are staggered, so that the diverting effect is better. It can be understood that the arrangement of the diverter holes 65 is not limited to the present embodiment. For example, in other embodiments, only one group or more than three groups of diverter holes 65 may be arranged.

[0050] In the prior art, a protrusion (not shown) is convexly provided on the inner wall of the puncture sleeve 20. In this embodiment, a corresponding avoidance notch 683 is provided on the third valve sleeve 68 of the gas-water diverter valve 60, which is plugged with the protrusion 25. The provision of the avoidance notch 683 enables the gas-water diverter valve 60 to be smoothly loaded into the puncture sleeve 20. At the same time, the gas-water diverter valve 60 can be positioned by plugging and matching the avoidance notch 683 with the protrusion on the puncture sleeve 20, thereby preventing the gas-water diverter valve 60 from rotating relative to the puncture sleeve 20. In addition, in this embodiment, a positioning portion 663 is provided on the top surface of the first valve sleeve 66, and the positioning portion 663 corresponds to the position of the avoidance notch 683. By providing the positioning portion 663 corresponding to the position of the avoidance notch 683, a foolproof effect is played, which can help workers determine the position of the avoidance notch 683 during installation, thereby ensuring that the avoidance notch 683 and the protrusion 25 can be smoothly engaged, thereby improving installation efficiency. In this embodiment, the positioning portion 663 is a positioning groove recessed on the top of the first valve sleeve 66. It is understood that the structure of the positioning portion 663 is not limited to this embodiment, for example, it can also be a positioning protrusion provided on the gas-water diverter valve 60.

[0051] Please also see Figure 3 , the air blocking valve 40 is installed at the through-hole 233 of the mounting cylinder 23 away from the end of the connecting tube body 24. A notch portion 41 is provided at the approximate middle position of the air blocking valve 40, and the notch portion 41 extends into the first valve sleeve 66 of the gas-water diverter 60 through the insertion opening 661. The notch portion 41 can not only facilitate the laparoscopic lens and the puncture core to penetrate into the puncture device 100, but also block the through-hole 233 of the mounting cylinder 23 away from the end of the connecting tube body 24 to prevent the water flow from spraying out when the endoscope is cleaned. The notch portion 41 can be a straight line or a cross shape, etc., which is not limited by the present invention. The conversion cap 50 is arranged on the side of the air blocking valve 40 that is away from the gas-water diverter 60, and the conversion cap 50 fixes the connecting sleeve seat 10 and presses the air blocking valve 40 to press the air blocking valve 40 against the puncture sleeve 20. A puncture hole 51 is formed through the substantially middle portion of the conversion cap 50 . The puncture hole 51 is used for the laparoscope lens and the puncture core to penetrate and can expose the notched portion 41 .

[0052] Please also see Fig.10 and Fig.11 The trocar 100 further includes an air-water injection assembly 90, which includes a main connecting pipe 91, a first three-way joint 921, a pneumoperitoneum tube 93, a second three-way joint 922, a connecting pipe 94, a first flushing branch pipe 95, and a second flushing branch pipe 96. The first three-way joint 921 and the second three-way joint 922 both have a first interface 923, a second interface 924, and a third interface 925. The structures of the first three-way joint 921 and the second three-way joint 922 belong to the prior art and are not described here for the sake of space omission.

[0053] One end of the main connecting pipe 91 is connected to the gas-water injection pipe 221, and the other end of the main connecting pipe 91 is connected to the first interface 923 of the first three-way joint 921. In this embodiment, one end of the main connecting pipe 91 is connected to the gas-water injection pipe 221 through the first joint 911, and the other end of the main connecting pipe 91 is connected to the first interface 923 of the first three-way joint 921 through the second joint 912. Preferably, the first joint 911 and the second joint 912 are both Luer joints, and the first three-way joint 921 is a Luer T-type joint that is plugged and matched with the first joint 911 and the second joint 912.

[0054] One end of the pneumoperitoneum tube 93 is connected to the second interface 924 of the first three-way connector 921 through the first one-way valve 971, and the other end of the pneumoperitoneum tube 93 is used to connect to the carbon dioxide pneumoperitoneum machine 200. One end of the connecting tube 94 is connected to the third interface 925 of the first three-way connector 921 through the second one-way valve 972, and the other end of the connecting tube 94 is connected to the first interface 923 of the second three-way connector 922. In this embodiment, the first one-way valve 971 and the second one-way valve 972 are both Luer one-way connectors that are plugged and matched with the first three-way connector 921.

[0055] One end of the first flushing branch pipe 95 is connected to the second interface 924 of the second three-way connector 922, and the other end of the first flushing branch pipe 95 is used to connect to the container 300 filled with flushing liquid. The first flushing branch pipe 95 is equipped with a third one-way valve 973. In this embodiment, the third one-way valve 973 is a Luer one-way connector. The first flushing branch pipe 95 includes a first tube body 951 and a second tube body 953. One end of the first tube body 951 is connected to one end of the second tube body 953 through the third one-way valve 973, and the other end of the first tube body 951 is connected to the second interface 924 of the second three-way connector 922; the other end of the second tube body 953 is connected to the first Luer one-way female connector 981, and the first Luer one-way female connector 981 is used to connect to the container 300 filled with flushing liquid. The container 300 can be an infusion bottle or an infusion bag, etc.

[0056] One end of the second flushing branch pipe 96 is connected to the third interface 925 of the second three-way connector 922, and the other end of the second flushing branch pipe 96 is used to connect the negative pressure suction syringe 400. In this embodiment, the other end of the second tube body 953 is connected to a second Luer one-way female connector 982, and the second Luer one-way female connector 982 is used to connect the negative pressure suction syringe 400.

[0057] The gas-water injection assembly 90 further includes a protective cover 99, and the first three-way joint 921, the second three-way joint 922, the first one-way valve 971, the second one-way valve 972, the third one-way valve 973 and the second joint 912 are all installed in the protective cover 99. By providing the protective cover 99, the first three-way joint 921, the second three-way joint 922, the first one-way valve 971, the second one-way valve 972, the third one-way valve 973 and the second joint 912 can be protected, and external impurities can be further prevented from entering the pipeline through the connection of the pipeline, which is conducive to reducing the risk of infection.

[0058] Please also see Fig.12 The second embodiment of the present invention provides a puncture device for laparoscopic surgery, which has a substantially similar structure to the puncture device in the first embodiment, and includes a sleeve seat 10, a puncture sleeve 20, a gas-water shunt valve 60, a gas-blocking valve 40 and a conversion cap 50. The puncture sleeve 20 is inserted into the sleeve seat 10, the gas-water shunt valve 60 is installed in the puncture sleeve 20, the gas-blocking valve 40 is installed on the puncture sleeve 20, and the conversion cap 50 is installed on the sleeve seat 10, and the gas-blocking valve 40 is pressed against the puncture sleeve 20. The difference lies in the structure of the gas-water shunt valve 60. In this embodiment, a spiral groove 671 is provided on the inner concave portion of the gas-water shunt valve 60, and the diversion hole 65 of the gas-water shunt valve 60 is provided at the spiral groove 671.

[0059] Please also see Fig.13 The third embodiment of the present invention provides a puncture device for laparoscopic surgery, which has a substantially similar structure to the puncture device in the first embodiment, and includes a sleeve seat 10, a puncture sleeve 20, a gas-water diverter 60, a gas-blocking valve 40 and a conversion cap 50. The puncture sleeve 20 is inserted into the sleeve seat 10, the gas-water diverter 60 is installed in the puncture sleeve 20, the gas-blocking valve 40 is installed on the puncture sleeve 20, and the conversion cap 50 is installed on the sleeve seat 10, and the gas-blocking valve 40 is pressed against the puncture sleeve 20. The difference lies in the structure of the gas-water diverter 60. In this embodiment, at least one water-blocking convex strip 673 is provided between two adjacent diversion holes 65 of the gas-water diverter 60, and a plurality of water-blocking convex strips 673 are distributed at intervals along the circumference of the inner concave portion.

[0060] When the puncture device 100 for laparoscopic surgery is used, the gas-water injection valve 223 is adjusted to make the gas-water injection tube 221 in a conducting state; the pneumoperitoneum tube 93 is connected to the carbon dioxide pneumoperitoneum machine 200, the first Luer one-way female connector 981 is connected to the container 300 filled with flushing fluid, and a negative pressure suction syringe 400 is connected to the second Luer one-way female connector 982. During the operation of the endoscope, the endoscope sequentially enters the abdominal cavity through the puncture hole 51, the notched portion 41, the insertion channel 61 and the connecting tube body 24 to perform the operation. When the endoscope lens has a problem of blurred vision or contamination by blood, the piston (not shown) of the negative pressure suction syringe 400 is withdrawn. At this time, negative pressure is formed in the negative pressure suction syringe 400, so that the flushing liquid enters the negative pressure suction syringe 400 from the container 300 through the first flushing branch pipe 95, the second three-way connector 922 and the second flushing branch pipe 96 in sequence. Then, the piston of the negative pressure suction syringe 400 is pushed forward, so that the flushing liquid in the negative pressure suction syringe 400 is sequentially discharged through the second flushing branch pipe 96. The branch pipe 96, the second three-way joint 922, the connecting pipe 94, the second one-way valve 972, the first three-way joint 921, the second joint 912, the main connecting pipe 91, the first joint 911, the air-water injection pipe 221 and the air-water injection port 22 enter the storage cavity 63, and then enter the insertion channel 61 through a plurality of diversion holes 65. The flushing liquid entering the insertion channel 61 enters the connecting tube body 24 along the insertion channel 61 and flows downward along the connecting tube body 24 to flush the endoscope located below the connecting tube body 24.

[0061] When the above-mentioned puncture device 100 for laparoscopic surgery is used, if it is necessary to introduce carbon dioxide gas for pneumoperitoneum into the abdominal cavity, adjust the gas-water injection valve 223 so that the gas-water injection tube 221 is in a conducting state; turn on the carbon dioxide pneumoperitoneum machine 200, so that the carbon dioxide gas enters the storage cavity 63 in sequence through the pneumoperitoneum tube 93, the first one-way valve 971, the first three-way joint 921, the main connecting pipe 91, the first joint 911, the gas-water injection tube 221 and the gas-water injection port 22, and then enters the insertion channel 61 through a plurality of diversion holes 65. The gas entering the insertion channel 61 enters the connecting tube body 24 along the insertion channel 61, and flows into the abdominal cavity along the connecting tube body 24.

[0062] When the air-water injection assembly 90 is not needed, the air-water injection valve 223 can be adjusted to keep the air-water injection pipe 221 in a closed state.

[0063] The puncture device 100 used for laparoscopic surgery is provided with an air-water diverter 60 in the puncture sleeve 20. When the endoscope inserted into the puncture sleeve 20 is blurred or contaminated, a flushing liquid such as saline can be introduced into the storage chamber 63 through the air-water injection port 22. The flushing liquid in the storage chamber 63 is diverted through the diverter hole 65 and flows to the endoscope along the insertion channel 61, thereby flushing the endoscope, achieving the purpose of flushing the endoscope without pulling out the endoscope. At the same time, since a plurality of diverter holes 65 are distributed at intervals along the circumference of the insertion channel 61, the flushing liquid can be diverted to various parts of the endoscope through the plurality of diverter holes 65, ensuring that all parts of the endoscope can be flushed and cleaned more cleanly. In addition, the air-water diverter 60 is provided in the puncture sleeve 20, and the overall volume of the puncture device 100 will not be increased.

[0064] The puncture device 100 for laparoscopic surgery also includes a gas-water injection assembly 90. The gas-water injection assembly 90 can isolate the injection of carbon dioxide gas for pneumoperitoneum and the injection of flushing liquid by setting a first one-way valve 971 and a second one-way valve 972, preventing the injected gas from entering the container 300 containing the flushing liquid or the injected flushing liquid from entering the pneumoperitoneum tube 93, so that the injection of gas and flushing liquid will not affect each other. The doctor can also inject gas or flushing liquid into the puncture device 100 at the same time as needed to improve work efficiency. By setting a third one-way valve 973, the negative pressure suction syringe 400 can suck the flushing liquid from the container 300 into the negative pressure suction syringe 400 during the process of withdrawing the piston, and when the negative pressure suction syringe 400 pushes the piston forward, the flushing liquid in the negative pressure suction syringe 400 can be pushed into the gas-water injection port 22 instead of entering the container 300. When the gas-water injection assembly 90 injects gas or flushing liquid into the puncture sleeve 20 , there is no need to operate a valve to control the flow direction of the fluid, and the use is more convenient.

[0065] The trocar for laparoscopic surgery is provided with a spiral groove 671 on the inner concave portion of the gas-water diverter valve 60, and the diverter hole 65 of the gas-water diverter valve 60 is provided at the spiral groove 671. The spiral groove 671 is provided on the inner concave portion of the gas-water diverter valve 60 and the diverter hole 65 is provided at the spiral groove 671, so that the water entering the storage chamber 63 can be more evenly distributed on the periphery of the gas-water diverter valve 60, so that the pressure and force of the water outflow from each diverter hole 65 are more uniform, which is conducive to improving the flushing effect.

[0066] The puncture device used for laparoscopic surgery can increase the water level at the diversion hole 65 through the water retaining convex strip 673 provided between two adjacent diversion holes 65 of the air-water diversion valve 60, thereby achieving the purpose of increasing the water output of the diversion hole 65, which is beneficial to improving the flushing effect.

[0067] It can be understood that the puncture device 100 is not limited to be used in laparoscopic surgery, but can also be used in arthroscopic surgery and thoracoscopic surgery.

[0068] The above description is a detailed description of the preferred feasible embodiments of the present invention, but the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modified changes completed under the technical spirit suggested by the present invention should fall within the patent scope covered by the present invention.

Claims

1. A puncture device for laparoscopic surgery, comprising a puncture cannula, wherein the puncture cannula is provided with a working channel and a gas and water injection port connected to the working channel, characterized in that: An air-water diverter valve is installed in the working channel, and the air-water diverter valve is provided with an insertion channel, a storage cavity and a plurality of diverter holes. The insertion channel is communicated with the working channel, the storage cavity is arranged around the outer periphery of the insertion channel and is communicated with the insertion channel through a plurality of the diverter holes, the storage cavity is communicated with the air-water injection port, and the plurality of the diverter holes are spaced apart along the circumference of the insertion channel.

2. The trocar for laparoscopic surgery according to claim 1, characterized in that: The gas-water diverter valve comprises a first valve sleeve, a second valve sleeve and a third valve sleeve which are sequentially connected and coaxially arranged, the inner cavities of the first valve sleeve, the second valve sleeve and the third valve sleeve together constitute the insertion channel, the outer peripheral wall of the first valve sleeve and the outer peripheral wall of the third valve sleeve are both in sealing contact with the inner wall of the working channel, the outer peripheral wall of the second valve sleeve is spaced apart from the puncture sleeve to form the storage chamber; a plurality of the diverter holes are spaced apart on the second valve sleeve.

3. The trocar for laparoscopic surgery according to claim 2, characterized in that: The second valve sleeve is connected to the bottom surface of the first valve sleeve and the top surface of the third valve sleeve, and the outer diameter of the second valve sleeve is smaller than the outer diameter of the bottom surface of the first valve sleeve and the outer diameter of the top surface of the third valve sleeve, thereby forming an inner recess on the outer wall of the gas-water diverter valve, and the inner recess constitutes the storage chamber.

4. The trocar for laparoscopic surgery according to claim 3, characterized in that: The inner concave portion is provided with a spiral groove, and the diversion hole is arranged at the spiral groove.

5. The trocar for laparoscopic surgery according to claim 3, characterized in that: At least one water retaining convex strip is arranged between two adjacent diversion holes, and a plurality of the water retaining convex strips are distributed at intervals along the circumference of the inner concave portion.

6. The trocar for laparoscopic surgery according to claim 1, characterized in that: The gas-water injection port is connected with a gas-water injection pipe, and a gas-water injection valve is installed on the gas-water injection pipe.

7. The trocar for laparoscopic surgery according to claim 6, characterized in that: The puncture device also includes an air-water injection assembly, which includes a main connecting pipe, a first three-way joint, a pneumoperitoneum tube, a second three-way joint, a connecting pipe, a first flushing branch pipe, and a second flushing branch pipe; One end of the main connecting pipe is connected to the gas-water injection pipe, and the other end of the main connecting pipe is connected to the first interface of the first three-way joint; One end of the pneumoperitoneum tube is connected to the second interface of the first three-way connector through a first one-way valve, and the other end of the pneumoperitoneum tube is used to connect to a carbon dioxide pneumoperitoneum machine; One end of the connecting pipe is connected to the third interface of the first three-way joint through a second one-way valve, and the other end of the connecting pipe is connected to the first interface of the second three-way joint; One end of the first flushing branch pipe is connected to the second interface of the second three-way joint, a third one-way valve is installed on the first flushing branch pipe, and the other end of the first flushing branch pipe is used to connect to a container filled with flushing liquid; One end of the second flushing branch pipe is connected to the third interface of the second three-way connector, and the other end of the second flushing branch pipe is used to connect to the negative pressure suction syringe.

8. The trocar for laparoscopic surgery according to claim 7, characterized in that: The first one-way valve, the second one-way valve and the third one-way valve are all Luer one-way connectors.

9. The trocar for laparoscopic surgery according to claim 7, characterized in that: The gas-water injection assembly also includes a protective cover, and the first three-way joint, the second three-way joint, the first one-way valve, the second one-way valve and the third one-way valve are all installed in the protective cover.

10. The trocar for laparoscopic surgery according to claim 6, characterized in that: The puncture device includes a sleeve seat, an air-blocking valve and a conversion cap. The sleeve seat is provided with a avoidance notch; the puncture sleeve passes through the sleeve seat, and the air-water injection tube extends out of the sleeve seat through the avoidance notch; the air-blocking valve is installed on the puncture sleeve, and the conversion cap is installed on the sleeve seat, and the air-blocking valve is pressed against the puncture sleeve.

Images