A puncture catheter device

Abstract

This invention discloses a puncture catheter device, including a puncture head housing. The puncture head housing includes a support section and an insertion section for insertion into a pneumoperitoneum along its length. The insertion section houses a balloon assembly. A fixing ring is slidably fitted onto the support section, and a locking component for fixing the fixing ring is connected to the end of the fixing ring furthest from the balloon assembly. During operation, the insertion section is inserted into the pneumoperitoneum. Gas is injected into the balloon assembly, causing it to expand within the pneumoperitoneum. The balloon assembly blocks the gap between the puncture head housing and the sidewall of the pneumoperitoneum, achieving an airtight seal. The fixing ring is then driven to slide along the support section to a preset position. The limiting space formed between the fixing ring and the balloon assembly abuts against the inner and outer walls of the pneumoperitoneum, providing support and airtightness for the puncture head housing. The balloon assembly prevents air leakage due to puncture head housing misalignment, ensuring sufficient airtightness and guaranteeing the safety and stability of the surgical procedure.

Description

Technical Field

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

[0002] Disposable trocars are important instruments in laparoscopic surgery. They are surgical instruments used in thoracic and laparoscopic procedures to establish working access channels in the thoracic and abdominal cavities. When doctors insert trocars into the pneumoperitoneum, the insertion angle and stability of the trocar directly affect the airtightness of the pneumoperitoneum during the operation.

[0003] In order to improve the stability of puncture equipment, existing technologies usually set up a stent assembly on the puncture equipment to stabilize the puncture head. However, the disadvantages of this structure are that the stent assembly steps are complicated, which is very inconvenient for time-sensitive surgical procedures. In addition, the fulcrum of the stent is usually located on the patient's body surface, which makes it difficult to form a stable and effective support, thus leading to gas leakage during the operation and affecting the safety of the operation.

[0004] Therefore, it is necessary to improve the existing puncture equipment to solve the technical problem of poor stability of its support structure. Summary of the Invention

[0005] The purpose of this invention is to provide a puncture catheter device to solve the above-mentioned technical problems.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A puncture catheter device includes a puncture head housing, the puncture head housing including a support section and an insertion section for insertion into a pneumoperitoneum along its length;

[0008] The insertion section houses an airbag assembly;

[0009] A fixing ring is slidably fitted on the support section, and a locking component for fixing the fixing ring is connected to the end of the fixing ring away from the airbag assembly.

[0010] The fixing ring is driven to slide along the support section to a preset position, and a limiting space for fixing the puncture catheter device is formed between the fixing ring and the airbag assembly.

[0011] Optionally, the locking assembly includes a first locking member connected to the retaining ring, and a second locking member;

[0012] The first locking member includes a first threaded portion and a plurality of limiting pieces disposed on the first threaded portion away from the fixed ring, the plurality of limiting pieces being disposed at intervals;

[0013] The second locking member is threadedly connected to the first threaded portion, and the second locking member has a locking cavity whose cross-sectional area gradually decreases along the direction away from the fixing ring.

[0014] Optionally, a spring is provided on the lower end face of the first locking member, and a pressure ring is connected to the other end of the spring.

[0015] Optionally, a puncture head body is fitted inside the puncture head housing, and a gap is provided between the puncture head body and the lower end of the insertion section;

[0016] A first channel for allowing medical gas to enter the pneumoperitoneum and a second channel for allowing medical gas to flow out of the pneumoperitoneum are sequentially formed between the puncture head housing and the puncture head body; wherein, the gap portion is connected to the second channel;

[0017] The outer wall of the insertion section has several air vents, which are connected to the first channel.

[0018] Optionally, the puncture catheter device further includes a tubing assembly, which includes a first tubing for air intake and a second tubing for air exhaust arranged side by side.

[0019] One end of the pipe assembly is provided with a connector assembly, the connector assembly having a first annular hole and a second annular hole fitted inside the first annular hole;

[0020] One end of the first annular hole is connected to the first tube body, and one end of the second annular hole is connected to the second tube body.

[0021] Optionally, the first tube body is provided with a connection port, and a drug injection channel is provided at the connection port;

[0022] A heating wire is provided inside the first tube, which is used to heat the gas entering the first tube.

[0023] Optionally, the pipe assembly is further provided with a third pipe body, one end of which is connected to the second channel, and the other end of which is connected to a pressure sensor, which is used to detect the pressure inside the pneumoperitoneum.

[0024] An observation window is provided at a preset position on the outer wall of the insertion section. A temperature sensor is installed in the observation window. The temperature sensor is connected to a wire assembly. The wire assembly extends along the second channel to the third tube body to provide the observation window.

[0025] Optionally, an annular receiving groove is provided on the outer wall of the insertion section, and the airbag assembly is received in the receiving groove; wherein, an air passage hole is provided on the groove wall of the receiving groove, and one end of the air passage hole is connected to the first channel.

[0026] A protective ring is slidably connected inside the storage groove along the length of the insertion section. When the protective ring is driven to move along the storage groove, the storage groove is opened.

[0027] Optionally, the protective ring includes a converging portion, and a plurality of connecting arms are provided on one end face of the converging portion along its circumferential direction. An elastic portion is provided on one end of the connecting arm near the converging portion, and the elastic portion has a tendency to drive the connecting arm to fold outward.

[0028] One end of the storage slot is provided with a sliding groove, and the gathering part is slidably connected to the sliding groove; wherein, a connecting block is connected to the inner side wall of the gathering part, and the end of the connecting block away from the gathering part is connected to the fixing ring.

[0029] Optionally, the upper end of the storage slot is provided with an inclined transition portion, and one end of the connecting arm abuts against the inclined transition portion.

[0030] Compared with the prior art, the present invention has the following beneficial effects: During operation, the insertion segment is inserted into the pneumoperitoneum. By inflating the balloon assembly with gas, the balloon assembly expands within the pneumoperitoneum, blocking the gap between the puncture head housing and the side wall of the pneumoperitoneum, thus achieving an airtight seal. Then, the fixing ring is driven to slide along the support segment to a preset position. The limiting space formed between the fixing ring and the balloon assembly abuts against the inner and outer walls of the pneumoperitoneum, thereby fixing and supporting the puncture catheter device. In this solution, the limiting structure supports and airtightens the puncture head housing. The balloon assembly prevents air leakage caused by puncture head housing tilting, ensuring sufficient airtightness and guaranteeing the safety and stability of the surgical procedure. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0033] Figure 1 This is a schematic diagram of the overall structure of the puncture catheter device;

[0034] Figure 2 This is a partial structural diagram of the puncture catheter device;

[0035] Figure 3 This is a schematic diagram of the locking assembly of the puncture catheter device;

[0036] Figure 4 This is a schematic diagram of the structure of the first locking element of the puncture catheter device;

[0037] Figure 5 This is a cross-sectional schematic diagram of the second locking element of the puncture catheter device;

[0038] Figure 6 This is a schematic diagram of the connector assembly of the puncture catheter device;

[0039] Figure 7 This is a schematic diagram of the lower end of the puncture head of the puncture catheter device;

[0040] Figure 8 This is a schematic cross-sectional view of the puncture head of the puncture catheter device.

[0041] Figure 9 This puncture catheter device Figure 8 A magnified schematic diagram of the structure at point A;

[0042] Figure 10 This puncture catheter device Figure 8 A magnified schematic diagram of the structure at point B.

[0043] Illustration: 100 puncture head housing, 101 support section, 102 puncture section, 103 vent, 104 observation window / detection window, 105 temperature sensor, 110 first channel, 120 second channel, 130 gap, 140 storage groove, 141 sliding groove, 142 inclined transition section;

[0044] 200 retaining rings;

[0045] Locking assembly 300, first locking member 310, first threaded portion 311, limiting piece 312, pressure ring 313, second locking member 320, locking cavity 321;

[0046] Airbag assembly 400;

[0047] The puncture head body is 500.

[0048] Pipe assembly 600, first pipe body 610, second pipe body 620, injection channel 630, third pipe body 640;

[0049] Connector assembly 700, first annular hole 710, second annular hole 720;

[0050] Protective ring 800, converging part 810, connecting arm 820, elastic part 830, connecting block 840. Detailed Implementation

[0051] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] In the description of this invention, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component positioned centrally in the connection.

[0053] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0054] This invention provides a puncture catheter device, including a puncture head housing 100. The puncture head housing 100 includes a support section 101 and an insertion section 102 for insertion into a pneumoperitoneum along its length. The insertion section 102 houses an airbag assembly 400. A fixing ring 200 is slidably sleeved on the support section 101. The end of the fixing ring 200 away from the airbag assembly 400 is connected to a locking assembly 300 for fixing the fixing ring 200.

[0055] During operation, the drive fixing ring 200 slides along the support section 101 to a preset position, and a limiting space for fixing the puncture catheter device is formed between the fixing ring 200 and the airbag assembly 400.

[0056] The working principle of this invention is as follows: During operation, the insertion section 102 is inserted into the pneumoperitoneum. Gas is injected into the balloon assembly 400, causing the balloon assembly 400 to expand within the pneumoperitoneum. The balloon assembly 400 can block the gap between the puncture head housing 100 and the side wall of the pneumoperitoneum, thus achieving an airtight seal. Then, the fixing ring 200 is driven to slide along the support section 101 to a preset position. The limiting space formed between the fixing ring 200 and the balloon assembly 400 abuts against the inner and outer walls of the pneumoperitoneum, thereby fixing and supporting the puncture head housing 100. Compared with the puncture equipment in the prior art, the limiting structure in this solution provides support and airtightness for the puncture head housing 100. The balloon assembly 400 can prevent the puncture head housing 100 from deflecting and causing air leakage, thus fully ensuring airtightness and guaranteeing the safety and stability of the surgical procedure.

[0057] In this embodiment, further improvements have been made to the above-mentioned puncture catheter device, and specific details of the locking component 300 have been added. The locking component 300 includes a first locking member 310 connected to the fixing ring 200 and a second locking member 320.

[0058] The first locking member 310 is connected to the retaining ring 200 and includes a first threaded portion 311 and a plurality of limiting pieces 312. The limiting pieces 312 are located at the end of the first threaded portion 311, and the plurality of limiting pieces 312 are arranged at intervals to restrict the movement of the second locking member 320.

[0059] The second locking member 320 is threadedly connected to the first threaded portion 311 and has a gradually decreasing locking cavity 321. When the second locking member 320 moves along the first threaded portion 311, the cross-sectional area of ​​the locking cavity 321 gradually decreases, thereby achieving stable fixation of the retaining ring 200.

[0060] The main function of this part of the structure is that the locking assembly 300 ensures the stable fixation of the retaining ring 200 in the preset position. Through the threaded interaction between the first locking member 310 and the second locking member 320, the retaining ring 200 can be precisely adjusted and locked.

[0061] As the second locking member 320 moves along the first threaded portion 311, the change in the cross-sectional area of ​​the locking cavity 321 can achieve a pressing effect on the limiting piece 312, thereby causing several limiting pieces 312 to come closer together and press against the outer wall of the support section 101. By setting several limiting pieces 312, the excessive movement of the second locking member 320 is restricted, and the stability and safety of the puncture catheter device during use are improved.

[0062] In summary, these improvements make the puncture catheter device more practical, safe, and stable, thus providing more reliable support for laparoscopic surgery.

[0063] As a further improvement, a spring is provided on the lower end face of the first locking member 310, and a pressure ring 305 is connected to the other end of the spring. The lower end face of the pressure ring 305 abuts against the patient's external body surface, and the spring provides an elastic buffering effect on the puncture head, thereby protecting the patient.

[0064] In another approach, a pressure sensor is installed on the lower end face of the first locking member 310. The pressure sensor is connected to an alarm light. When the pressure value detected by the pressure sensor exceeds a preset value, the alarm light emits a warning light. This improvement serves as a safety reminder. The pressure sensor 313 can monitor the pressure between the fixing ring 200 and the patient's body surface in real time. On one hand, it can be used to determine whether the fixing ring 200 is properly pressed, while avoiding excessive pressure on the user's body surface. On the other hand, it can serve as a basis for assessing the stability of pneumoperitoneum pressure during surgery. When pneumoperitoneum pressure becomes uneven, corresponding changes will occur on the user's body surface, such as local bulges, which will be detected by the alarm light, reminding the doctor to pay attention and take appropriate measures to reduce patient risk. By installing the pressure sensor 313 and the alarm light 314 on the lower end face of the first locking member 310, the puncture catheter device is made safer and can monitor and warn of potential problems during surgical procedures in real time, thereby further improving the success rate of laparoscopic surgery and patient safety.

[0065] In this embodiment, combined with Figure 8 As shown, a puncture head body 500 is fitted inside the puncture head housing 100, and a gap 130 is provided between the puncture head body 500 and the lower end of the insertion section 102.

[0066] Between the puncture head housing 100 and the puncture head body 500, a first channel 110 for allowing medical gas to enter the pneumoperitoneum and a second channel 120 for allowing medical gas to exit the pneumoperitoneum are sequentially formed; wherein, the gap 130 communicates with the second channel 120; a plurality of air outlets 103 are formed on the outer wall of the insertion section 102, and the air outlets 103 communicate with the first channel 110. The plurality of air outlets 103 on the outer wall of the insertion section 102 communicate with the first channel 110 to ensure that medical gas can effectively enter the pneumoperitoneum. Wherein, after the puncture catheter device is installed in place, the puncture head body 500 needs to be pulled out of the puncture head housing 100, so the second channel 120 is formed at the location of the puncture head body 500 for the discharge of waste gas, and at the same time for the pressure balance in the pneumoperitoneum;

[0067] It should be noted that by setting the first channel 110 (air intake) and the second channel 120 (air exhaust), medical gas is allowed to be supplied to the pneumoperitoneum along a preset path and waste gas is discharged, which helps to maintain a stable internal environment and thus ensures the smooth progress of the operation.

[0068] The gap 130 is connected to the second channel 120, which helps to effectively discharge medical waste gas, reduce excessive internal pressure caused by gas accumulation, and reduce surgical risks. This puncture catheter device has superior performance in terms of gas management, surgical safety and ventilation, further improving the success rate of laparoscopic surgery and patient safety.

[0069] Furthermore, this puncture catheter device also includes a tubing assembly 600, which includes a first tube 610 for air intake and a second tube 620 for air exhaust arranged side by side; one end of the tubing assembly 600 is provided with a connector assembly 700, which has a first annular hole 710 and a second annular hole 720 fitted inside the first annular hole 710; one end of the first annular hole 710 communicates with the first tube 610, and one end of the second annular hole 720 communicates with the second tube 620.

[0070] It should be noted that the use of the tubing assembly 600 allows for more flexible adjustment of medical gas, ensuring that the pressure in the pneumoperitoneum is maintained within a suitable range to facilitate surgery. The design of the connector assembly 700 simplifies the connection to the medical gas management system, allowing doctors to quickly interchange interfaces and easily connect them during surgery. The inlet gas via the first tube 610 and the outlet gas via the second tube 620 ensures smooth gas flow and stable pressure within the pneumoperitoneum, reducing risks during surgery and improving patient safety.

[0071] In this embodiment, the first tube 610 is provided with a connection port, and a drug injection channel 630 is provided at the connection port; through the connection port and the drug injection channel 630, drugs can be conveniently injected during laparoscopic surgery, which improves surgical efficiency and is beneficial to the patient's recovery.

[0072] A heating wire is installed inside the first tube 610 to heat the gas entering the first tube 610. The heating wire ensures that the medical gas reaches a suitable temperature before entering the pneumoperitoneum; for example, carbon dioxide gas, when heated to 43°C, exhibits the ability to kill tumor cells, thereby improving the therapeutic efficacy of the medical gas.

[0073] Furthermore, the tubing assembly 600 also includes a third tube 640. One end of the third tube 640 is connected to the second channel 120, and the other end is connected to a pressure sensor used to detect the pressure within the pneumoperitoneum. An observation window 104 is pre-positioned on the outer wall of the insertion section 102, and a temperature sensor 105 is installed within the observation window 104. The temperature sensor 105 is connected to a lead wire assembly, which runs along the second channel 120 to the third tube 640. Through the temperature sensor 105 and the pressure sensor 106, the surgeon can monitor the temperature and pressure within the pneumoperitoneum in real time, allowing for a better understanding of the internal condition and timely adjustments, reducing surgical risks and improving patient safety. The third tube 640 enables more precise gas management, facilitating pressure and temperature control within the pneumoperitoneum, thus ensuring a smoother surgical procedure. This further improves and optimizes the puncture catheter device in terms of real-time monitoring, enhanced surgical safety, and more precise gas management, contributing to higher success rates and improved patient safety in laparoscopic surgery.

[0074] In this embodiment, an annular receiving groove 140 is formed on the outer wall of the insertion section 102, and the airbag assembly 400 is received in the receiving groove 140. An air passage hole is formed on the groove wall of the receiving groove 140, one end of which communicates with the first channel 110. A protective ring 800 is slidably connected within the receiving groove 140 along the length of the insertion section 102. When the protective ring 800 is driven to move along the receiving groove 140, the receiving groove 140 is opened. Preferably, the inner ring of the airbag assembly 400 is fixedly connected to the groove wall of the receiving groove 140 to prevent the airbag assembly 400 from falling off. It should be noted that, since the wall thickness of the insertion section 102 is relatively small, the receiving groove 140 in this solution can be formed by bending the puncture head housing 100 to create a groove-shaped structure, thus not affecting the strength of the puncture head housing 100.

[0075] Furthermore, by embedding the balloon assembly 400 within the storage groove 140, it is convenient to store the balloon assembly 400 within the storage groove 140 during the insertion of the puncture head housing 100 into the pneumoperitoneum. The design of the annular storage groove 140 makes the balloon assembly 400 easier to adjust and maintain, providing more reliable protection during surgery. At the same time, it facilitates the movement of the puncture head housing 100, avoids jamming, and improves the smoothness of the puncture head housing 100 during insertion.

[0076] Specifically, the protective ring 800 includes a converging portion 810. A plurality of connecting arms 820 are provided on one end face of the converging portion 810 along its circumferential direction. An elastic portion 830 is provided on one end of the connecting arm 820 near the converging portion 810. The elastic portion 830 has a tendency to drive the connecting arm 820 to fold outward.

[0077] A groove 141 is provided at one end of the storage slot 140, and the gathering part 810 is slidably connected in the groove 141; wherein, a connecting block 840 is connected on the inner side wall of the gathering part 810, and the end of the connecting block 840 away from the gathering part 810 is connected to the fixing ring 200.

[0078] The protective ring 800 has two states: an open state and a closed state. In the open state, the protective ring 800 is not subjected to external force, and the connecting arm 820 folds outward under the drive of the elastic part 830. At this time, the protective ring 800 surrounds the outer periphery of the receiving groove 140 and serves to limit the airbag assembly 400. The cross-sectional area of ​​the protective ring 800 gradually decreases from top to bottom. The protective ring 800 is conical and serves to guide the piercing head housing 100 to pierce. The entire piercing head is a regular streamlined shape to avoid any steps that may hinder the movement of the piercing head housing 100.

[0079] When the protective ring 800 is in the closed state, several connecting arms 820 are driven to move closer to each other, thereby converging to form an annular body with the same radius as the converging part 810. This drives the entire protective ring 800 to move downward along the slide groove 141 until it is housed in the slide groove 141. At this time, the protective ring 800 is detached from the periphery of the housing groove 140, and the airbag assembly 400 in the housing groove 140 can extend out of the housing groove 140, playing the role of airtightness and support.

[0080] It should be noted that, in order to improve the stability of the protective ring 800 during movement, this solution adopts a method of connecting the protective ring 800 with the fixed ring 200, linking the up-and-down movement of the fixed ring 200 with the operation of the airbag assembly 400; specifically, when the fixed ring 200 is driven to move downward, it will drive the protective ring 800 downward until it is housed in the slide groove 141, so that the protective ring 800 is in a closed state, and the airbag assembly 400 can be deployed, thereby improving the stability of the movement of the protective ring 800.

[0081] Furthermore, the upper end of the storage slot 140 is provided with an inclined transition portion 142, and one end of the connecting arm 820 abuts against the inclined transition portion 142; wherein, the inclined transition portion 142 serves to support the protective ring 800 on the one hand, and guide the piercing head housing 100 to pierce in on the other hand.

[0082] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A puncture catheter device, characterized by, The device includes a puncture head housing, which includes a support section and an insertion section for insertion into the pneumoperitoneum along its length. The insertion section houses an airbag assembly; A fixing ring is slidably fitted on the support section, and a locking component for fixing the fixing ring is connected to the end of the fixing ring away from the airbag assembly. The fixing ring is driven to slide along the support section to a preset position, and a limiting space for fixing the puncture catheter device is formed between the fixing ring and the airbag assembly. The puncture head housing is fitted with a puncture head body. Between the puncture head housing and the puncture head body, a first channel for allowing medical gas to enter the pneumoperitoneum and a second channel for allowing medical gas to flow out of the pneumoperitoneum are sequentially opened. An annular storage groove is provided on the outer wall of the insertion section, and the airbag assembly is stored in the storage groove; wherein, an air passage hole is provided on the groove wall of the storage groove, and one end of the air passage hole is connected to the first channel. A protective ring is slidably connected inside the storage groove along the length of the insertion section. When the protective ring is driven to move along the storage groove, the storage groove is opened. The protective ring includes a converging part, and a plurality of connecting arms are provided on one end face of the converging part along its circumferential direction. An elastic part is provided on one end of the connecting arm near the converging part, and the elastic part has a tendency to drive the connecting arm to fold outward. One end of the storage slot is provided with a sliding groove, and the gathering part is slidably connected to the sliding groove; wherein, a connecting block is connected to the inner side wall of the gathering part, and the end of the connecting block away from the gathering part is connected to the fixing ring.

2. The puncture catheter device according to claim 1, wherein The locking assembly includes a first locking member connected to the retaining ring, and a second locking member; The first locking member includes a first threaded portion and a plurality of limiting pieces disposed on the first threaded portion away from the fixed ring, the plurality of limiting pieces being disposed at intervals; The second locking member is threadedly connected to the first threaded portion, and the second locking member has a locking cavity whose cross-sectional area gradually decreases along the direction away from the fixing ring.

3. The puncture catheter device of claim 2, wherein, A spring is provided on the lower end face of the first locking member, and a pressure ring is connected to the other end of the spring.

4. The puncture catheter device of claim 1, wherein, A gap is provided between the puncture head body and the lower end of the insertion section; wherein, the gap communicates with the second channel; The outer wall of the insertion section has several air vents, which are connected to the first channel.

5. The puncture catheter device of claim 4, wherein, It also includes a pipe assembly comprising a first pipe body for air intake and a second pipe body for air outlet arranged side by side; One end of the pipe assembly is provided with a connector assembly, the connector assembly having a first annular hole and a second annular hole fitted inside the first annular hole; One end of the first annular hole is connected to the first tube body, and one end of the second annular hole is connected to the second tube body.

6. The puncture catheter device according to claim 5, characterized in that, The first tube body is provided with a connection port, and a drug injection channel is provided at the connection port; A heating wire is provided inside the first tube, which is used to heat the gas entering the first tube.

7. The puncture catheter device according to claim 6, characterized in that, The pipeline assembly also includes a third pipe body, one end of which is connected to the second channel, and the other end of which is connected to a pressure sensor for detecting the pressure inside the pneumoperitoneum. An observation window is provided at a preset position on the outer wall of the insertion section. A temperature sensor is installed in the observation window. The temperature sensor is connected to a wire assembly, which runs along the second channel to the third tube.

8. The puncture catheter device according to claim 1, characterized in that, The upper end of the storage slot is provided with an inclined transition section, and one end of the connecting arm abuts against the inclined transition section.

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