Valveless single-hole multi-channel puncture device with air sealing function

Abstract

The application discloses a valve-free single-hole multi-channel puncture device with a gas sealing function. The structure can cancel the independent air injection valve structure, realizes dynamic constant pressure maintenance in the abdominal cavity and smoke recovery and filtration during the operation through the valve-free puncture device and the filter tube group. The valve-free single-hole multi-channel puncture device with the gas sealing function comprises a multi-channel platform, a plurality of independent channels for passing through surgical instruments are arranged on the multi-channel platform, puncture sleeves, the puncture sleeves are connected with the multi-channel platform at one end and are used for extending into the abdominal cavity to form a physical channel connecting the inside and outside of the abdominal cavity, a cut protection sleeve connected with the multi-channel platform and used for expanding and protecting a surgical incision and isolating abdominal cavity contents and incision tissues, a valve-free puncture device connected with the multi-channel platform and used for connecting an external air source and maintaining the air pressure in the abdominal cavity, and a filter tube group connected with the valve-free puncture device.

Description

Technical Field

[0001] This invention relates to the field of puncture device technology, specifically a valveless single-hole multi-channel puncture device with an air-sealing function. Background Technology

[0002] In minimally invasive surgery, especially single-port laparoscopic surgery, multi-channel trocars are crucial for establishing access channels for surgical instruments and maintaining pneumoperitoneum pressure. Existing multi-channel single-port trocars typically consist of a multi-channel platform, a trocar cannula, and an incision protective sheath.

[0003] Currently, multi-channel trocars used in clinical practice generally suffer from the following technical problems: First, existing products all require independent insufflation tubing and valves to inject gas into the abdominal cavity through an external insufflation line to establish and maintain pneumoperitoneum. However, when faced with frequent instrument changes or tissue removal during surgery that cause instantaneous loss of abdominal pressure, the gas replenishment response of independent insufflation valves is slow, resulting in large fluctuations in abdominal pressure and making it difficult to maintain constant pressure, thus affecting the stability of the surgical field and the precision of the operation.

[0004] Secondly, the gas injection and smoke extraction functions of existing products are independent, and some products do not even have a smoke removal function. The smoke generated during operations such as electrocoagulation and electrocautery cannot be effectively removed and filtered in a timely manner, resulting in blurred vision and obstructed field of view in the abdominal cavity, affecting the safety and efficiency of the operation, and increasing the risk of harmful substances in the smoke spreading in the operating room.

[0005] Third, while existing incision protection sleeves can provide some isolation and protection for incision tissue, there is still room for improvement in the sealing fit between them, the puncture cannula, and the multi-channel platform. This is especially true when multiple instruments are used in tandem, where the sealing reliability of the gaps between channels needs to be enhanced. Therefore, there is an urgent need to develop a valveless single-port multi-channel trocar with an air-sealing function to address the problems in the existing technology. Summary of the Invention

[0006] The purpose of this invention is to provide a valveless single-hole multi-channel trocar with air-sealing function, which can eliminate the independent air injection valve structure and achieve dynamic constant pressure maintenance and intraoperative smoke recovery and filtration in the abdominal cavity through the valveless trocar and filter tube assembly. It has a simple structure and is easy to use, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: A valveless single-port multi-channel trocar with air-sealing function, comprising: A multi-channel platform, which has multiple independent channels for surgical instruments to pass through; The trocars consist of at least two cannulas, one end of which is connected to a multi-channel platform and the other end is used to extend into the abdominal cavity to form a physical pathway connecting the inside and outside of the abdominal cavity. An incision protector, connected to a multi-channel platform, is used to expand and protect surgical incisions and isolate abdominal contents from incision tissue; A valveless trocar, connected to a multi-channel platform, is used to connect to an external air source and maintain intra-abdominal air pressure; The filter assembly is connected to the valveless puncture device.

[0008] By adopting the above technical solution, a multi-instrument operation channel with a single-port access is formed by a multi-channel platform, a puncture cannula, an incision protective sleeve, a valveless trocar, and a filter tube assembly. The valveless trocar and the filter tube assembly work together to provide pneumoperitoneum maintenance and air seal functions.

[0009] As a further aspect of the present invention: the valveless puncture device adopts a design without a mechanical seal valve, and has a three-chamber structure inside. The three-chamber structure includes an air inlet chamber for introducing high-pressure gas, a vortex airflow chamber for forming an air seal layer, and an exhaust chamber for discharging smoke.

[0010] By adopting the above technical solution, the absence of a mechanical seal valve reduces gas leakage when instruments enter or exit, and the three-chamber structure realizes air intake, gas seal formation and smoke discharge respectively.

[0011] As a further aspect of the present invention: the incision protective sleeve is made of a flexible polymer material, including an inner ring located inside the abdominal cavity to prevent the intestine from slipping out, and an outer ring located outside the skin for compression and fixation.

[0012] By adopting the above technical solution, the inner and outer ring structures fix the incision protective sleeve to the abdominal wall, and the flexible material expands the incision and isolates the abdominal contents from the incision tissue.

[0013] As a further aspect of the present invention: the multi-channel platform is a rigid or semi-rigid platform with multiple sealable channels at the top, and the upper end of the puncture cannula is detachably connected to and communicates with the bottom of the multi-channel platform.

[0014] By adopting the above technical solution, a rigid or semi-rigid platform supports multiple sealable channels, and the puncture sleeve is detachably connected to the platform for easy assembly and replacement.

[0015] As a further aspect of the present invention: the filter assembly includes a high-pressure air inlet line for connecting to the pneumoperitoneum machine, a filter chamber for filtering smoke impurities, and an integrated pipeline interface for connecting to the valveless puncture device.

[0016] By adopting the above technical solution, gas is introduced through the high-pressure air inlet pipeline, smoke and impurities are filtered out by the filter chamber, and the integrated pipeline interface is centrally connected to the valveless puncture device.

[0017] As a further aspect of the present invention: the filter tube assembly simultaneously realizes the intake, exhaust recovery and high-pressure gas transmission to the valveless puncture device through the integrated pipeline interface, so as to cooperate with the valveless puncture device to achieve dynamic pressure maintenance and smoke removal.

[0018] By adopting the above technical solution, the integrated pipeline interface can uniformly manage the intake and exhaust of gas and the transmission of high-pressure gas, thereby achieving dynamic maintenance of abdominal pressure and continuous smoke removal.

[0019] As a further aspect of the present invention: the multi-channel platform does not have an independent air injection valve structure for connecting to the external air injection tube, and the establishment and maintenance of intra-abdominal pneumoperitoneum is achieved only through a valveless trocar and the filter tube assembly connected to it.

[0020] By adopting the above technical solution, the independent air injection valve is eliminated, simplifying the pipeline connection. The establishment and maintenance of pneumoperitoneum are completed by the valveless puncture device and filter tubing as a whole.

[0021] As a further aspect of the present invention: the flexible polymer material of the cut-out protective sleeve includes silicone or thermoplastic polyurethane elastomer rubber.

[0022] By adopting the above technical solutions, silicone or TPU materials provide flexibility and biocompatibility for cut protection sleeves.

[0023] Compared with the prior art, the beneficial effects of the present invention are: eliminating the independent air injection valve structure, and achieving dynamic constant pressure maintenance in the abdominal cavity and intraoperative smoke recovery and filtration through a valveless trocar and filter tube assembly.

[0024] Other features and advantages of the present invention will be disclosed in detail in the following detailed description and accompanying drawings. Attached Figure Description

[0025] Figure 1 This is a front view of an embodiment of the present invention; Figure 2 This is a perspective view of an embodiment of the present invention; Figure 3 This is a top view in an embodiment of the present invention.

[0026] The attached figures are labeled as follows: 1. Multi-channel platform; 11. Independent channel; 2. Puncture cannula; 3. Incision protection sleeve; 31. Inner ring; 32. Outer ring; 4. Valveless puncture device; 5. Filter tube assembly; 51. High-pressure air inlet line; 52. Filter chamber; 53. Integrated pipeline interface. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] like Figures 1 to 3 As shown, a valveless single-hole multi-channel puncture device with air-sealing function includes a multi-channel platform 1, a puncture cannula 2, an incision protective sleeve 3, a valveless puncture device 4, and a filter tube assembly 5.

[0029] The multi-channel platform 1 has multiple independent channels 11. There are three or four independent channels 11. Each independent channel 11 has a sealing ring or diaphragm on its inner wall to maintain airtightness between the channel and the instrument after insertion. The axes of the independent channels 11 are parallel to each other or distributed at a certain angle. The overall shape of the multi-channel platform 1 is disc-shaped or elliptical. The bottom of the multi-channel platform 1 has a connection interface for connecting the puncture cannula 2 and the incision protective sleeve 3. The connection interface is a snap-fit ​​structure or a threaded structure. The side or top of the multi-channel platform 1 has an interface for installing a valveless trocar 4. The multi-channel platform 1 is a one-piece molded structure made of medical-grade polycarbonate or polyetheretherketone. The upper surface of the multi-channel platform 1 is flat or slightly curved.

[0030] There are at least two puncture cannulas 2. The number of puncture cannulas 2 corresponds to the number of independent channels 11. The puncture cannulas 2 are hollow tubular structures with openings at both ends. The upper end of the puncture cannulas 2 is detachably connected to the bottom of the multi-channel platform 1. The upper end of the puncture cannulas 2 is provided with a connector, and a sealing gasket is provided inside the connector. The lower end of the puncture cannulas 2 is a beveled or flat end. The outer diameter of the puncture cannulas 2 is 5mm to 12mm. Different puncture cannulas 2 may have the same or different outer diameters. The outer wall of the puncture cannulas 2 is provided with graduations to indicate the insertion depth. The outer wall of the puncture cannulas 2 is also provided with an anti-slip structure, which is an annular protrusion, barbs, or threaded grooves. The puncture cannulas 2 are made of medical-grade stainless steel or hard polymer material. The puncture cannulas 2 are inserted into the hollow interior of the incision protection sleeve 3.

[0031] The incision protector 3 is connected to the multi-channel platform 1. The incision protector 3 is made of a flexible polymer material, such as silicone or thermoplastic polyurethane elastomer rubber. The incision protector 3 includes an inner ring 31, an outer ring 32, and a hollow cylindrical structure connecting the inner ring 31 and the outer ring 32. The inner ring 31 is located inside the abdominal cavity, and its diameter is larger than the diameter of the surgical incision. The cross-section of the inner ring 31 is circular or elliptical. The inner ring 31 is elastic and can be compressed and deformed before being inserted into the abdominal cavity and returning to its original shape within the abdominal cavity. The outer ring 32 is located on the outer side of the skin, and its diameter is larger than the diameter of the surgical incision. The outer ring 32 fits snugly against the skin surface. The outer ring 32 has a fixing structure for connection to the multi-channel platform 1; the fixing structure is a slot or a snap-fit ​​edge. The hollow cylindrical structure penetrates the entire abdominal wall, and its length is selected according to the thickness of the abdominal wall. The wall thickness of the hollow cylindrical structure is 0.5 mm to 2 mm. The hollow cylindrical structure has an internal space that accommodates the puncture cannula 2. The outer surface of the hollow cylindrical structure contacts the incision tissue, providing isolation and protection. The inner ring 31, outer ring 32, and hollow cylindrical structure are integrally formed.

[0032] A valveless puncture device 4 is connected to a multi-channel platform 1. The valveless puncture device 4 is connected to the side interface of the multi-channel platform 1 via threads or snaps. The axis of the valveless puncture device 4 is parallel or perpendicular to the plane of the multi-channel platform 1. The valveless puncture device 4 employs a design without a mechanical seal valve. The valveless puncture device 4 has a three-chamber structure internally. The three-chamber structure includes an inlet chamber, a vortex airflow chamber, and an exhaust chamber. One end of the inlet chamber is connected to the integrated pipeline interface 53 of the filter assembly 5, and the other end is connected to the vortex airflow chamber. The cross-sectional area of ​​the inlet chamber gradually decreases along the gas flow direction. A turbine structure is provided inside the vortex airflow chamber. The turbine structure includes stator blades and rotor blades, or simply fixed helical guide vanes. After high-pressure gas enters the vortex airflow chamber, it is guided by the turbine structure to form a high-speed vortex airflow. The rotation axis of the high-speed vortex airflow is coaxial with the central channel of the valveless puncture device 4. The high-speed vortex airflow forms an air seal at the inlet of the central channel of the valveless puncture device 4. The air seal layer is an annular airflow barrier that prevents gas from leaking out of the abdominal cavity, while allowing surgical instruments to pass through the central channel without gas escaping. One end of the exhaust chamber is connected to the central channel, and the other end is connected to the integrated tubing interface 53 of the filter assembly 5. The exhaust chamber is used to remove smoke and excess gas generated in the abdominal cavity. The shell of the valveless trocar 4 is made of medical-grade polycarbonate or polysulfone.

[0033] The filter assembly 5 is connected to the valveless trocar 4. The filter assembly 5 includes a high-pressure air inlet line 51, a filter chamber 52, and an integrated tubing interface 53. One end of the high-pressure air inlet line 51 is connected to the pneumoperitoneum machine, and the other end is connected to the inlet of the filter chamber 52. The inner diameter of the high-pressure air inlet line 51 is 4mm to 8mm. The wall of the high-pressure air inlet line 51 has a pressure-resistant braided structure. The filter chamber 52 is filled with filter media. The filter media is activated carbon fiber, ultrafine glass fiber, or polypropylene meltblown material. The filter chamber 52 has a detachable structure for easy replacement of the filter media. The outlet of the filter chamber 52 is connected to the integrated tubing interface 53. The integrated tubing interface 53 is a multi-channel connector. The integrated tubing interface 53 has three fluid passage ports: the first port connects to the outlet of the filter chamber 52, the second port connects to the air inlet chamber of the valveless trocar 4, and the third port connects to the exhaust chamber of the valveless trocar 4. The integrated tubing interface 53 is equipped with a one-way valve to prevent gas backflow. The filter assembly 5, through the integrated tubing interface 53, simultaneously enables the intake of gas into the valveless puncture device 4, the recovery of exhaust gas, and the transmission of high-pressure gas. The high-pressure intake tubing 51 and the integrated tubing interface 53 are made of medical-grade polyvinyl chloride or polyurethane.

[0034] The multi-channel platform 1 does not have an independent air injection valve structure for connecting to an external air injection tube. The establishment and maintenance of pneumoperitoneum within the abdominal cavity are achieved solely through the valveless trocar 4 and its connected filter tubing 5. High-pressure gas supplied by the pneumoperitoneum machine enters the filter chamber 52 via the high-pressure inlet pipe 51, and after filtration, enters the inlet chamber of the valveless trocar 4 through the integrated tubing interface 53. The gas forms a high-speed vortex airflow within the vortex airflow chamber, creating an air seal layer. Simultaneously, the gas enters the abdominal cavity through the central channel to establish and maintain pneumoperitoneum. When the intra-abdominal pressure exceeds a preset value, excess gas and surgical smoke are discharged through the exhaust chamber of the valveless trocar 4, and then enter the filter chamber 52 through the integrated tubing interface 53 for filtration. The filtered gas is then discharged to the external environment or recycled back to the pneumoperitoneum machine for reuse. This process is continuously and dynamically adjusted to achieve constant pressure maintenance in the abdominal cavity and real-time smoke removal.

[0035] In use, first make a skin incision of 15mm to 30mm in length in the patient's abdomen. The inner ring 31 of the incision protector 3 is deformed by compression and inserted into the abdominal cavity through the incision. The inner ring 31 returns to its original shape within the abdominal cavity and adheres to the inner side of the abdominal wall. The outer ring 32 is placed on the skin surface and pressed firmly. Then, adjust the length of the hollow cylindrical structure to fit the thickness of the abdominal wall. Place the multi-channel platform 1 on the outer ring 32 of the incision protector 3 and connect it via a fixing structure. Insert the puncture cannulas 2 one by one into the interface at the bottom of the multi-channel platform 1, extending into the abdominal cavity through the hollow cylindrical structure of the incision protector 3. Install the valveless trocar 4 on the side interface of the multi-channel platform 1. Connect the integrated tubing interface 53 of the filter tubing assembly 5 to the valveless trocar 4. Connect the high-pressure air inlet tubing 51 to the pneumoperitoneum machine. Start the pneumoperitoneum machine and set the target pressure value. High-pressure gas enters the abdominal cavity through the above path, establishing pneumoperitoneum. Surgical instruments are inserted into the abdominal cavity through independent channels 11 and trocar 2 on the multi-channel platform 1 for surgical procedures. Smoke generated during the procedure is exhausted and filtered through the exhaust chamber of the valveless trocar 4. After the procedure, the pneumoperitoneum machine is stopped, the filter tubing 5 and valveless trocar 4 are disassembled, the trocar 2 is pulled out, the multi-channel platform 1 is separated from the incision protective sleeve 3, and finally the incision protective sleeve 3 is removed from the incision, which is then sutured.

[0036] This invention provides a valveless single-hole multi-channel trocar with air-sealing function, which can eliminate the independent air injection valve structure and achieve dynamic constant pressure maintenance in the abdominal cavity and intraoperative smoke recovery and filtration through the valveless trocar and filter tube assembly.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0038] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A valveless single-hole multi-channel puncture device with air-sealing function, characterized in that, include: A multi-channel platform (1) is provided with multiple independent channels (11) for surgical instruments to pass through. The puncture cannula (2) is at least two, one end of which is connected to the multi-channel platform (1), and the other end is used to extend into the abdominal cavity to form a physical passage connecting the inside and outside of the abdominal cavity. An incision protection sleeve (3) is connected to the multi-channel platform (1) to expand and protect the surgical incision and isolate the abdominal contents from the incision tissue; A valveless trocar (4) is connected to the multi-channel platform (1) for connecting to an external air source and maintaining intra-abdominal air pressure; The filter tube assembly (5) is connected to the valveless puncture device (4).

2. The valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The valveless puncture device (4) adopts a design without a mechanical seal valve and has a three-chamber structure inside. The three-chamber structure includes an air inlet chamber for introducing high-pressure gas, a vortex airflow chamber for forming an air seal layer, and an exhaust chamber for discharging smoke.

3. The valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The incision protective sleeve (3) is made of flexible polymer material and includes an inner ring (31) located in the abdominal cavity to prevent the intestine from slipping out and an outer ring (32) located on the outside of the skin for compression and fixation.

4. The valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The multi-channel platform (1) is a rigid or semi-rigid platform with multiple sealable channels on the top. The upper end of the puncture cannula (2) is detachably connected to and communicates with the bottom of the multi-channel platform (1).

5. A valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The filter assembly (5) includes a high-pressure air inlet line (51) for connecting to the pneumoperitoneum machine, a filter chamber (52) for filtering smoke impurities, and an integrated pipeline interface (53) for connecting to the valveless puncture device (4).

6. A valveless single-hole multi-channel puncture device with air-sealing function according to claim 5, characterized in that, The filter tube assembly (5) simultaneously enables air intake, exhaust recovery, and high-pressure gas transmission to the valveless puncture device (4) through the integrated pipeline interface (53), so as to cooperate with the valveless puncture device (4) to achieve dynamic pressure maintenance and smoke removal.

7. A valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The multi-channel platform (1) is not equipped with an independent air injection valve structure for connecting to an external air injection tube. The establishment and maintenance of intra-abdominal pneumoperitoneum are achieved solely through the valveless trocar (4) and the filter tube assembly (5) connected to it.

8. A valveless single-hole multi-channel puncture device with air-sealing function according to claim 1, characterized in that, The flexible polymer material of the cut-out protective sleeve (3) includes silicone or thermoplastic polyurethane elastomer rubber.

Images