CN219184008U - Three-way puncture outfit and circulating pressure stabilizing system - Google Patents

Abstract

The application relates to the technical field of medical equipment and discloses a three-way puncture outfit and a circulating pressure stabilizing system, wherein the three-way puncture outfit comprises a puncture head, and the side wall interlayer of the puncture head is divided into a first chamber and a second chamber; the puncture sleeve is connected with the other end of the puncture head, the side wall interlayer of the puncture sleeve is provided with and divided into a first air cavity and a second air cavity, the first cavity is communicated with the first air cavity, and the second cavity is communicated with the second air cavity; the side wall of one end of the puncture sleeve, which is far away from the puncture head, is provided with an air outlet and an air inlet, the air outlet is communicated with the first air cavity, and the air inlet is communicated with the second air cavity; and the three-way joint is provided with an air inlet channel, an air exhaust channel and a pressure measuring channel, the pressure measuring channel is communicated with the inner cavity of the puncture head, the air inlet channel is communicated with the first cavity, and the air exhaust channel is communicated with the second cavity. The medical device can quickly build pressure and suck the smoke generated in the operation, so that a healthy and clear operation environment is provided for medical care and patients, and the operation difficulty is reduced.

Description

Three-way puncture outfit and circulating pressure stabilizing system

Technical Field

The application relates to the technical field of medical equipment, in particular to a three-way puncture outfit and a circulating pressure stabilizing system.

Background

The puncture outfit is mainly used for surgical operation, belongs to medical consumables, and is mainly matched with minimally invasive equipment to provide an instrument channel for abdominal cavity pelvic cavity minimally invasive operation.

In the existing endoscopic surgery, the puncture outfit only exists as a single channel for the instrument to enter and exit. The smoke can be generated in the minimally invasive surgery process, so that the surgical field of a doctor is blocked, meanwhile, the smoke contains viable bacteria or cancer cells, and great health threat is brought to the patient and the doctor, so that the patient and the doctor need to stretch into the suction tube from another puncture outfit, medical staff can manually control the suction of the smoke, but because the suction tube is additionally arranged, the pressure of the abdominal cavity of the patient is ensured to be stable, and the puncture outfit is additionally arranged for the inflation tube to stretch into the abdominal cavity of the patient to supplement the pressure. However, the number of puncture outfits is increased significantly, and uncontrolled factors are increased accordingly, thereby increasing the difficulty of the operation.

Disclosure of Invention

In order to quickly and efficiently inflate abdominal cavity and suck away smoke generated in operation, a healthy and high-definition visual field operation environment is provided for medical care and patients.

The three-way puncture outfit and the circulating pressure stabilizing system provided by the application adopt the following technical scheme:

the three-channel puncture outfit comprises a puncture head, wherein two ends of the puncture head are communicated, a side wall interlayer of the puncture head is arranged and divided into a first cavity and a second cavity, and a sealing mechanism is arranged at one end of the puncture head; the three-channel puncture outfit further comprises:

the puncture rod penetrates through the puncture head and is movably spliced with the puncture head;

the puncture sleeve is connected with the other end of the puncture head, the side wall interlayer of the puncture sleeve is provided with and divided into a first air cavity and a second air cavity, the first cavity is communicated with the first air cavity, and the second cavity is communicated with the second air cavity; the side wall of one end of the puncture sleeve, which is far away from the puncture head, is provided with an air outlet and an air inlet, the air outlet is communicated with the first air cavity, and the air inlet is communicated with the second air cavity; and

the three-way joint is provided with an air inlet channel, an exhaust channel and a pressure measuring channel, the pressure measuring channel is communicated with the inner cavity of the puncture head, the air inlet channel is communicated with the first cavity, and the exhaust channel is communicated with the second cavity.

Further, the three-way joint further includes:

the device comprises a substrate, wherein a first connecting pipe, a second connecting pipe and a third connecting pipe are fixedly connected to one side of the substrate, the first connecting pipe, the second connecting pipe and the third connecting pipe are coaxially arranged and sequentially increase in diameter, an inner cavity of the first connecting pipe forms a pressure measuring channel, a cavity between the first connecting pipe and the second connecting pipe forms an air inlet channel, and a cavity between the second connecting pipe and the third connecting pipe forms an air outlet channel; the other side of base plate fixedly connected with first branch pipe, second branch pipe and third branch pipe, first branch pipe with the pressure measurement way intercommunication, the second branch pipe with the intake duct intercommunication, the third branch pipe with the exhaust duct intercommunication.

Further, a connecting joint used for being connected with the three-way joint is arranged on the outer side wall of the puncture head;

the connection joint includes:

the first fixing tube is fixedly connected with the puncture head, one end of the first fixing tube is communicated with the inner cavity of the puncture head, and the other end of the first fixing tube is in sliding connection with the first connecting tube;

the second fixed pipe is fixedly connected with the puncture head, the second fixed pipe is spliced with the second connecting pipe, and the width of the air inlet channel is larger than the wall thickness of the second fixed pipe; and

the third fixing pipe is fixedly connected with the puncture head, the third fixing pipe is spliced with the third connecting pipe, and the width of the exhaust passage is larger than the wall thickness of the third fixing pipe;

the first cavity is communicated with the cavity between the first fixed pipe and the second fixed pipe, and the second cavity is communicated with the cavity between the second fixed pipe and the third fixed pipe.

Further, the sealing mechanism includes:

the sheath cap is arranged at the end part of the puncture head, two ends of the sheath cap are communicated, the puncture rod penetrates through the sheath cap and is in sliding connection with the sheath cap, one end of the sheath cap, which stretches into the puncture head, is clamped with a cross sealing valve, and the puncture rod is in sliding insertion connection with the cross sealing valve.

Further, one end of the sheath cap, which is far away from the puncture head, is provided with a circular sealing valve.

Further, a groove for the insertion of the puncture sleeve is formed in one end, far away from the sealing mechanism, of the puncture head, the first cavity and the second cavity are communicated with the groove, and the puncture sleeve is in damping sliding insertion connection with the puncture head through the groove.

Further, a positioning strip is convexly arranged on the wall of the groove, and a positioning groove for inserting the positioning strip is recessed in the side wall of the puncture sleeve.

A circulating pressure stabilizing system is used for endoscopic surgery and comprises the three-channel puncture outfit.

Further, the method further comprises the following steps:

the air inlet subsystem is used for supplying air to the body of a patient and is communicated with the air inlet channel;

the gas circulation subsystem is used for extracting gas in a patient to the gas inlet subsystem and is communicated with the exhaust passage;

a pressure monitoring subsystem for monitoring air pressure within the patient's body in communication with the pressure tap; and

and a controller coupled to the air intake subsystem, the gas circulation subsystem, and the pressure monitoring subsystem, respectively.

Further, the controller controls the air inlet subsystem to supply air to the patient according to the air pressure being lower than a preset value.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the puncture device, the side wall interlayer of the puncture head is divided into the first cavity and the second cavity, and the side wall interlayer of the puncture sleeve is divided into the first air cavity and the second air cavity, so that the puncture head and the puncture sleeve are provided with three channels, and then are externally connected with the three-way joint, the puncture tube is integrated with three independent channels, pneumoperitoneum can perform functions of air intake, smoke exhaust, pressure measurement and the like, operation is convenient, operation difficulty is reduced, and operation success rate is improved;

2. by arranging the cross sealing valve and the circular sealing valve, the puncture outfit is sealed through the cross sealing valve when an instrument does not enter, and is sealed through the circular sealing valve when the instrument enters, so that two sealing structures before and after the instrument enters can be realized, the puncture outfit has good sealing performance, and inflation and pressure building can be realized in time;

3. the puncture sleeve and the puncture head are detachably connected, so that the puncture sleeve with different lengths can be conveniently replaced, and patients with different sizes can be suitable;

4. when the circulation pressure stabilizing system works, the air inlet subsystem is communicated with the air inlet channel and supplies air for a patient, the pressure monitoring subsystem is communicated with the pressure measuring channel and is used for monitoring the pressure in the abdominal cavity of the patient, and the air circulation subsystem is used for pumping out air in the patient, so that smoke generated in the operation process is timely discharged from the patient, a clear view is provided for the operation, the operation is facilitated, and medical staff and physical and mental health of the patient are facilitated; the extracted gas is filtered and then flows back to the air inlet subsystem, so that the circulation pressure-stabilizing air exhaust is realized, and the operation is facilitated.

Drawings

FIG. 1 is a schematic view of the overall structure of a three-way puncture outfit in the present application;

FIG. 2 is a bottom view of the lancing head of the present application;

FIG. 3 is a cross-sectional view of the piercing head of the present application;

FIG. 4 is a schematic view of the three-way joint of the present application;

FIG. 5 is a schematic view of the structure of the end of the puncture cannula connected with the puncture head in the present application;

fig. 6 is a schematic diagram of a cyclic voltage stabilization system in the present application.

Reference numerals illustrate:

1. a puncture head; 2. a puncture rod; 3. a three-way joint; 30. an air inlet channel; 31. an exhaust passage; 32. a pressure measuring channel; 33. a substrate; 34. a first connection pipe; 35. a second connection pipe; 36. a third connection pipe; 37. a first branch pipe; 38. a second branch pipe; 39. a third branch pipe; 4. a sealing mechanism; 41. a sheath cap; 42. a cross seal valve; 43. a circular sealing valve; 5. a puncture cannula; 6. a first chamber; 7. a second chamber; 8. a connection joint; 81. a first fixed tube; 82. a second fixed tube; 83. a third fixed tube; 9. a groove; 10. a seal ring; 11. a first air chamber; 12. a second air chamber; 13. an air outlet; 14. an air inlet; 15. a positioning strip; 16. a positioning groove; 100. a three-channel puncture outfit; 17. a controller; 18. a user interaction module; 19. an air source control module; 20. a safety air release module; 21. a flow monitoring module; 22. a first filtration module; 23. an intake air heating module; 24. a gas circulation module; 25. a second filtration module; 26. and a pressure monitoring module.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-6.

The embodiment of the application discloses a three-way puncture outfit and a circulating pressure stabilizing system.

Referring to fig. 1, a three-channel puncture outfit comprises a puncture head 1, a puncture rod 2, a puncture cannula 5, a sealing mechanism 4 and a three-way joint 3. The two ends of the puncture head 1 are communicated, and the puncture rod 2 passes through the puncture head 1 and is in sliding connection with the puncture head 1. The sealing mechanism 4 is arranged at one end of the puncture head 1, and the puncture sleeve 5 is arranged at the other end of the puncture head 1.

Referring to fig. 2 and 4, the sidewall of the puncture head 1 is provided with an interlayer, and the interlayer of the puncture head 1 is divided into a first chamber 6 and a second chamber 7 which are not communicated with each other. The three-way joint 3 is arranged on one side of the puncture head 1, the three-way joint 3 is provided with three channels, namely an air inlet channel 30, an air outlet channel 31 and a pressure measuring channel 32, wherein the pressure measuring channel 32 is communicated with the inner cavity of the puncture head 1, the air inlet channel 30 is communicated with the first cavity 6, and the air outlet channel 31 is communicated with the second cavity 7.

Referring to fig. 2 and 3, the outer wall of the puncture head 1 is provided with a connection joint 8 for connection with the three-way joint 3. The connecting joint 8 comprises a first fixed pipe 81, a second fixed pipe 82 and a third fixed pipe 83 which are fixedly connected with the puncture head 1, wherein the first fixed pipe 81, the second fixed pipe 82 and the third fixed pipe 83 are coaxially arranged and gradually increased in diameter, and spaces are reserved among the first fixed pipe 81, the second fixed pipe 82 and the third fixed pipe 83. The inner cavity of the puncture head 1 is communicated with the first fixed pipe 81, the first chamber 6 is communicated with a cavity between the first fixed pipe 81 and the second fixed pipe 82, and the second chamber 7 is communicated with a cavity between the second fixed pipe 82 and the third fixed pipe 83.

Referring to fig. 4, the three-way joint 3 includes a base plate 33, the base plate 33 is circularly arranged, a first connecting pipe 34, a second connecting pipe 35 and a third connecting pipe 36 are integrally formed on one side of the base plate 33, the first connecting pipe 34, the second connecting pipe 35 and the third connecting pipe 36 are coaxially arranged and sequentially increased in diameter, a pressure measuring channel 32 is formed in an inner cavity of the first connecting pipe 34, and a first fixing pipe 81 is in sliding plug-in fit with the first connecting pipe 34; the first connecting pipe 34 and the second connecting pipe 35 are spaced to form an air inlet channel 30, the second fixed pipe 82 and the second connecting pipe 35 are in sliding plug fit, and the width of the air inlet channel 30 is larger than the wall thickness of the second fixed pipe 82; the second connecting pipe 35 and the third connecting pipe 36 have a space therebetween and form the exhaust passage 31, the third fixing pipe 83 is provided with external threads, the third connecting pipe 36 is provided with internal threads, the third fixing pipe 83 is in threaded connection with the third connecting pipe 36, and the width of the exhaust passage 31 is larger than the wall thickness of the third fixing pipe 83. The other side of the base plate 33 is fixedly connected with three branch pipes, namely a first branch pipe 37, a second branch pipe 38 and a third branch pipe 39, wherein the first branch pipe 37 is communicated with the pressure measuring channel 32, the second branch pipe 38 is communicated with the air inlet channel 30, and the third branch pipe 39 is communicated with the air outlet channel 31.

Referring to fig. 2, 3 and 5, the puncture cannula 5 is detachably connected to the puncture head 1. Specifically, the puncture head 1 is close to the one end of puncture sleeve 5 and opens and have the recess 9 that supplies puncture sleeve 5 to insert, and first cavity 6, second cavity 7 all communicate with recess 9, and the tank bottom fixedly connected with sealing washer 10 of recess 9, puncture sleeve 5 pass through recess 9 and puncture sleeve damping slip grafting. Through can dismantle the setting with puncture sleeve pipe 5 and puncture head 1, conveniently change puncture sleeve pipe 5 for puncture head 1 can reuse, thereby be favorable to reducing use cost.

The side wall interlayer of the puncture cannula 5 is provided and divided into a first air cavity 11 and a second air cavity 12, and the first air cavity 11 and the second air cavity 12 penetrate through one end of the puncture cannula 5 inserted into the groove 9. The end of the puncture cannula 5 remote from the puncture head 1 is conically arranged for puncturing. The side wall of one end of the puncture sleeve 5 far away from the puncture head 1 is provided with an air outlet 13 and an air inlet 14, the air outlet 13 and the air inlet 14 are consistent in shape and are oppositely arranged on the puncture sleeve 5, the air outlet 13 is communicated with the first air cavity 11, and the air inlet 14 is communicated with the second air cavity 12.

The concave side wall of the groove 9 is also convexly provided with positioning strips 15, two positioning strips 15 are arranged, the two positioning strips 15 are oppositely arranged, and each positioning strip 15 is positioned at the boundary between the first chamber 6 and the second chamber 7. The inner side wall of the puncture cannula 5 is recessed with a positioning groove 16 for inserting the positioning strip 15, and the positioning groove 16 penetrates through one end of the puncture cannula 5 close to the puncture head 1. The positioning strip 15 is matched with the positioning groove 16 to perform a positioning function on the puncture sleeve 5, so that after the puncture sleeve 5 is connected with the puncture head 1, the first air cavity 11 is opposite to the first cavity 6 and is communicated with the first cavity 6, and the second air cavity 12 is opposite to the second cavity 7 and is communicated with the second cavity 7.

In use, the first branch 37 is externally connected to a pressure measuring device, the second branch 38 is externally connected to an inflating device, and the third branch 39 is externally connected to a smoke extraction device. After the puncture outfit is inserted into the abdomen of a patient, the pneumoperitoneum is built by inflating the abdomen through the air inlet channel 30, the abdominal air pressure is detected through the pressure measuring channel 32, when smoke is generated in the operation process, the smoke is discharged through the air outlet channel 31, the pressure inside the abdominal cavity is detected through the pressure measuring channel 32, the lost pressure is timely supplemented through the air inlet channel 30, so that the smoke generated in the operation is sucked away under the condition of ensuring the stability of the abdominal pressure, and a healthy and high-definition visual field operation environment is provided for medical care and the patient, so that the operation difficulty is reduced.

In some embodiments, the pressure measuring device, the inflating device and the smoke drawing device may be separate devices or may be integrated devices, that is, the pressure measuring device, the inflating device and the smoke drawing device may be integrated into one device, or the pressure measuring device, the inflating device and the smoke drawing device may be integrated into one device.

Referring to fig. 3, the sealing mechanism 4 includes a sheath cap 41, both ends of the sheath cap 41 are provided so as to penetrate therethrough, and the puncture rod 2 passes through the sheath cap 41 and is slidably inserted into the sheath cap 41. The sheath cap 41 is detachably connected to the puncture head 1. Specifically, the sheath cap 41 is provided with external threads, the puncture head 1 is provided with internal threads, and the sheath cap 41 is in threaded connection with the puncture head 1.

The cross seal valve 42 is clamped at one end of the sheath cap 41 penetrating into the puncture head 1, the cross section of the cross seal valve 42 is U-shaped, the cross seal valve 42 has elasticity and can be automatically dredged under the action of external force, and after the external force disappears, the opening of the cross seal valve 42 can be automatically closed under the action of the elastic force. Specifically, the cross sealing valve 42 is made of edible silica gel material, and a cross slit is formed in the middle of the cross sealing valve 42; when the cross seal valve 42 is closed, the cross seal valve 42 blocks the passage of the puncture head 1 and does not obstruct the communication of the first connecting tube 34 with the lumen of the puncture cannula 5. The end of the sheath cap 41 remote from the puncture head 1 is fitted with a circular sealing valve 43. Specifically, the circular sealing valve 43 has a circular shape, and when the circular sealing valve 43 is closed, the circular sealing valve 43 seals the end of the sheath cap 41. The sheath cap 41, cross seal valve 42 and circular seal valve 43 comprise the sealing mechanism 4 to ensure that no pressure is released during surgery.

The implementation principle of the three-way puncture outfit in the embodiment of the application is as follows:

in use, the first branch 37 is externally connected to a pressure measuring device, the second branch 38 is externally connected to an inflating device, and the third branch 39 is externally connected to a smoke extraction device. The puncture outfit is then inserted into the abdomen of the patient, and then the puncture rod 2 is pulled out, the cross sealing valve 42 plays a role of sealing when the instrument does not enter the puncture outfit, and a seal is formed between the circular sealing valve 43 and the instrument when the instrument enters the puncture outfit, thereby providing a good sealing effect. The pressure is then built up by rapid inflation through the inlet channel 30 and the pressure inside the abdominal cavity is monitored in real time through the pressure measuring channel 32. When smoke is always generated in the operation process, the smoke is timely discharged through the exhaust passage 31, and the lost pressure is synchronously supplemented, so that the pressure stability in the abdominal cavity is ensured. On the basis, smoke generated in the operation is sucked away in time, a healthy high-definition visual field operation environment is provided for medical care and patients, the operation difficulty is reduced, and the operation success rate is improved.

Referring to fig. 6, a cyclic pressure stabilization system includes the three-way puncture outfit 100, and further includes a controller 17, an air intake subsystem, a gas circulation subsystem, a pressure monitoring subsystem, and a user interaction module 18. The air inlet subsystem is used for being communicated with the air inlet duct 30 and supplying air to the inside of a patient through the air inlet duct 30, the air circulation subsystem is communicated with the air inlet subsystem, the air circulation subsystem is used for being communicated with the air outlet duct 31 and extracting air in the patient to the air inlet subsystem through the air outlet duct 31, and the pressure monitoring subsystem is used for being communicated with the pressure measuring duct 32 and monitoring the air pressure in the patient through the pressure measuring duct 32.

The user interaction module 18 is coupled to the controller 17, the user interaction module 18 being adapted to set the pressure in the patient's body and the gas flow rate when establishing a pneumoperitoneum, to display the inflow and the pressure in the patient's body in real time, and to select different inflow modes. The controller 17 controls the air intake subsystem to supply air to the patient in response to the air pressure being below a preset value. The preset value can be set by the user on the user interaction module 18, or can be preset by the circulation pressure stabilizing system, and is usually the standard air pressure required by the patient, or can be set differently according to the needs of the patient with different illness states, or can be set differently according to the needs of different endoscope procedures.

In some embodiments, the intake subsystem includes an air source control module 19, a safety vent module 20, a flow monitoring module 21, a first filtration module 22, and an intake air heating module 23, each coupled to the controller 17. The gas pumped from the gas source flows through the gas source control module 19, the flow rate monitoring module 21, the first filtering module 22 and the inlet air heating module 23 in sequence, and then enters the patient through the air inlet channel 30.

The air source control module 19 is used for supplementing air for the air source, the air source control module 19 is used for monitoring the air supply pressure of the air source, cutting off or opening the air supply of the air source to the system, adjusting the air source pressure to a certain stable pressure value, and the air source control module 19 can adopt a mode of matching an air valve with a pressure gauge. The flow monitoring module 21 is used for monitoring and controlling the flow of the air flow entering the patient, and the flow monitoring module 21 can be a flow meter matched with a flow valve. The first filter module 22 is used to filter impurities and bacteria from the gas entering the patient to ensure that the gas remains clean in the patient, and the first filter module 22 may be an air cleaner. The air inlet heating module 23 is used for heating air entering the patient so that the body temperature of the patient is kept normal, and the air inlet heating module 23 can adopt an electric heating wire. The safety air release module 20 is communicated with the pipeline between the air source control module 19 and the flow monitoring module 21 through a branch pipe, and the safety air release module 20 can adopt an air release valve. When the pressure monitoring subsystem monitors that the pressure in the patient exceeds the safety limit value, the gas pumped by the gas source is timely discharged through the safety venting module 20, so that gas transmission into the patient is stopped.

In some embodiments, the gas circulation subsystem includes a gas circulation module 24 and a second filtration module 25 coupled to the controller 17. The gas circulation module 24 can be a suction pump, the second filter module 25 can be a medical smoke purifier, and the second filter module 25 is used for filtering gas in a patient. The exhaust passage 30 of the three-channel puncture outfit 100 is sequentially communicated with the second filter module 25 and the gas circulation module 24 through a pipeline, and the gas circulation module 24 is communicated with a pipeline between the flow monitoring module 21 and the first filter module 22 through a pipeline. When smoke is generated in the operation process, the gas circulation module 24 works, and gas carrying the smoke in the abdominal cavity of a patient flows into the second filtering module 25 through the exhaust passage 31 and flows back to the air inlet subsystem after being filtered and purified, so that the circulating smoke discharging and pressure stabilizing are realized.

The pressure monitoring subsystem includes a pressure monitoring module 26, the pressure monitoring module 26 being coupled to the controller 17. Specifically, the pressure monitoring module 26 may employ a pressure gauge.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The three-channel puncture outfit comprises a puncture head (1), and is characterized in that two ends of the puncture head (1) are arranged in a penetrating manner, a side wall interlayer of the puncture head (1) is arranged and divided into a first cavity (6) and a second cavity (7), and a sealing mechanism (4) is arranged at one end of the puncture head (1); the three-channel puncture outfit further comprises:

the puncture rod (2) penetrates through the puncture head (1) and is movably inserted into the puncture head (1);

the puncture sleeve (5) is connected with the other end of the puncture head (1), a side wall interlayer of the puncture sleeve (5) is provided and divided into a first air cavity (11) and a second air cavity (12), the first cavity (6) is communicated with the first air cavity (11), and the second cavity (7) is communicated with the second air cavity (12); the side wall of one end, far away from the puncture head (1), of the puncture sleeve (5) is provided with an air outlet (13) and an air inlet (14), the air outlet (13) is communicated with the first air cavity (11), and the air inlet (14) is communicated with the second air cavity (12); and

three way connection (3), three way connection (3) are provided with intake duct (30), exhaust duct (31) and pressure measurement way (32), pressure measurement way (32) with the inner chamber intercommunication of puncture head (1), intake duct (30) with first cavity (6) intercommunication, exhaust duct (31) with second cavity (7) intercommunication.

2. A three-way puncture outfit according to claim 1, characterized in that the three-way joint (3) further comprises:

the device comprises a substrate (33), wherein a first connecting pipe (34), a second connecting pipe (35) and a third connecting pipe (36) are fixedly connected to one side of the substrate (33), the first connecting pipe (34), the second connecting pipe (35) and the third connecting pipe (36) are coaxially arranged and sequentially increase in diameter, the inner cavity of the first connecting pipe (34) forms a pressure measuring channel (32), a cavity between the first connecting pipe (34) and the second connecting pipe (35) forms an air inlet channel (30), and a cavity between the second connecting pipe (35) and the third connecting pipe (36) forms an exhaust channel (31); the other side of the base plate (33) is fixedly connected with a first branch pipe, a second branch pipe and a third branch pipe, the first branch pipe is communicated with the pressure measuring channel (32), the second branch pipe is communicated with the air inlet channel (30), and the third branch pipe is communicated with the air exhaust channel (31).

3. A three-way puncture outfit according to claim 2, wherein:

the outer side wall of the puncture head (1) is provided with a connecting joint (8) for connecting with the three-way joint (3);

the connection joint (8) comprises:

the first fixing tube (81) is fixedly connected with the puncture head (1), one end of the first fixing tube (81) is communicated with the inner cavity of the puncture head (1), and the other end of the first fixing tube is in sliding connection with the first connecting tube (34);

the second fixed pipe (82) is fixedly connected with the puncture head (1), the second fixed pipe (82) is spliced with the second connecting pipe (35), and the width of the air inlet channel (30) is larger than the wall thickness of the second fixed pipe (82); and

the third fixed pipe (83) is fixedly connected with the puncture head (1), the third fixed pipe (83) is spliced with the third connecting pipe (36), and the width of the exhaust passage (31) is larger than the wall thickness of the third fixed pipe (83);

the first fixing pipe (81), the second fixing pipe (82) and the third fixing pipe (83) are coaxially arranged and sequentially increase in diameter, the first chamber (6) is communicated with a cavity between the first fixing pipe (81) and the second fixing pipe (82), and the second chamber (7) is communicated with a cavity between the second fixing pipe (82) and the third fixing pipe (83).

4. A three-channel puncture device according to claim 1, characterized in that the sealing mechanism (4) comprises:

sheath cap (41) are installed the tip of puncture head (1), the both ends of sheath cap (41) link up and set up, puncture pole (2) are penetrated sheath cap (41) and with sheath cap (41) sliding connection, one end joint that sheath cap (41) stretched into puncture head (1) has cross sealing valve (42), puncture pole (2) with cross sealing valve (42) sliding grafting.

5. The three-way puncture outfit of claim 4, wherein: one end of the sheath cap (41) far away from the puncture head (1) is provided with a circular sealing valve (43).

6. The three-way puncture outfit of claim 5, wherein: the puncture device is characterized in that a groove (9) for the puncture sleeve (5) to be inserted is formed in one end, far away from the sealing mechanism (4), of the puncture head (1), the first cavity (6) and the second cavity (7) are communicated with the groove (9), and the puncture sleeve (5) is in damping sliding insertion connection with the puncture head (1) through the groove (9).

7. The three-way puncture outfit of claim 6, wherein: the groove wall of the groove (9) is convexly provided with a positioning strip (15), and the side wall of the puncture sleeve (5) is sunken with a positioning groove (16) for inserting the positioning strip (15).

8. A cyclic pressure stabilization system for endoscopic surgery, comprising:

the three-way puncture instrument (100) according to any one of claims 1 to 7.

9. The cyclic pressure stabilization system of claim 8, further comprising:

an air inlet subsystem for supplying air to the patient, which is communicated with the air inlet channel (30);

a gas circulation subsystem for extracting gas from the patient to the gas intake subsystem, in communication with the exhaust duct (31);

a pressure monitoring subsystem for monitoring air pressure within the patient's body in communication with the pressure tap (32); and

a controller (17) is coupled to the air intake subsystem, the gas circulation subsystem, and the pressure monitoring subsystem, respectively.

10. The cyclic pressure stabilization system of claim 9, wherein:

the controller (17) controls the air inlet subsystem to supply air to the patient according to the air pressure being lower than a preset value.

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