Single-chamber multi-channel laparoscopic puncture device

Abstract

The utility model discloses a single cavity multichannel laparoscope puncture outfit, including multi -hole platform and film channel, be equipped with air inlet pipe, exhaust pipe and a plurality of operation channels on the multi -hole platform, the film channel has first shape, first shape has the expanding diameter structure, and its diameter gradually increases from the one end close to multi -hole platform to the one end deviating from multi -hole platform, and the taper angle is 15~35 DEG, the film channel is SMP material, and when being lower than first temperature, the film channel keeps second shape, when being higher than first temperature, the film channel restores and keeps first shape, and the taper angle of first shape is greater than the taper angle of second shape, and in the side deviating from multi -hole platform, the diameter of first shape is greater than the diameter of second shape, the film channel of the utility model is expanding diameter structure, and can maintain a larger space in the abdominal cavity, increases the angle and space of surgical instrument operation, improves the convenience, reduces the risk of patient's trauma and abdominal hernia simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically a single-cavity multi-channel laparoscopic puncture device. Background Technology

[0002] Single-lumen multi-channel laparoscopic trocars are commonly used in minimally invasive abdominal surgeries, including multi-port platforms and membrane channels. Various abdominal surgeries typically involve a 2-3 cm incision at the umbilicus, into which a membrane channel is inserted. Laparoscopic instruments are then inserted through the various ports of the multi-port platform for surgical manipulation. Because the umbilical incision cannot be further enlarged (for every 1 cm increase in the umbilical incision, the risk of umbilical hernia increases by 30%), two main challenges exist during the procedure:

[0003] 1. Currently, the membrane channel of the commonly used single-lumen multi-channel laparoscopic trocar is generally straight. The opening of the straight channel on the side away from the multi-port platform (the end inserted into the incision) has a limited angle, which restricts the angle and space for surgical instrument operation. If the area to be treated is too large, it is necessary to combine multiple incision channels to place the abdominal trocar to complete the surgical operation, which increases the risk of patient trauma and abdominal hernia.

[0004] 2. Membrane channels are easily compressed by intra-abdominal pressure, causing the channels to narrow and making it difficult to pass through or insert more surgical instruments. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a single-lumen multi-channel laparoscopic trocar. In use, the membrane channel has an enlarged diameter structure, which provides a larger space at the opening on the side away from the multi-port platform, increasing the angle and space for surgical instrument operation and improving convenience. At the same time, the membrane channel at the incision site maintains a smaller diameter, reducing patient trauma and the risk of abdominal hernia.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A single-lumen multi-channel laparoscopic trocar includes a multi-hole platform and a membrane channel. The multi-hole platform is provided with an air inlet pipe, an air outlet pipe, and multiple operating channels. The membrane channel has a first shape with an enlarged diameter structure, the diameter of which gradually increases from the side near the multi-hole platform to the side away from the multi-hole platform, and the cone angle is 15° to 35°.

[0008] A flip ring is provided at one end of the thin film channel near the porous platform, and an inner fixing ring is provided at the other end of the thin film channel away from the porous platform.

[0009] The porous platform and the thin film channel are connected by a connecting assembly, which includes a first connecting ring disposed on the thin film channel and a second connecting ring disposed on the porous platform. The inner cavity of the first connecting ring is provided with a first annular groove adapted to the flip ring. The first connecting ring and the second connecting ring are engaged or threaded together.

[0010] The bottom outer periphery of the porous platform is provided with a limiting flange, and the inner cavity of the second connecting ring is provided with a second annular groove that is adapted to the limiting flange.

[0011] The inner fixing ring is provided with a lifting strap, and a pull ring is provided at the end of the lifting strap that is away from the inner fixing ring.

[0012] The thin film channel is made of SMP material. When the temperature of the thin film channel is lower than the first temperature, the thin film channel maintains the second shape. When the temperature of the thin film channel is higher than the first temperature, the thin film channel restores and maintains the first shape. The cone angle of the first shape is greater than the cone angle of the second shape, and on the side away from the porous platform, the diameter of the first shape is greater than the diameter of the second shape.

[0013] The inner fixing ring is made of SMP material. When the temperature of the inner fixing ring is higher than the first temperature, the diameter of the inner fixing ring increases by 10% to 50%.

[0014] Compared with the prior art, the advantages of this utility model are as follows:

[0015] 1. The membrane channel of this utility model has an expanded diameter structure when in use, which makes the opening of the membrane channel on the side away from the porous platform larger, increasing the angle and space for operation of surgical instruments and improving convenience. At the same time, the membrane channel at the incision site maintains a smaller diameter, reducing the risk of trauma to the patient and abdominal hernia.

[0016] 2. The membrane channel of this utility model is made of SMP material. When the membrane channel is inserted into the human body through the incision, the membrane channel restores and maintains its first shape due to the influence of body temperature. The opening on the side away from the multi-porous platform has a larger diameter than the second shape, thereby increasing the angle and space for surgical instrument operation and improving convenience. At the same time, the membrane channel at the incision maintains a smaller diameter.

[0017] 3. The internal fixation ring of this utility model is made of SMP material. Similarly, when the membrane channel is inserted into the human body through the incision, its diameter increases due to the influence of body temperature, which increases the angle and space for operation of surgical instruments and improves convenience. Attached Figure Description

[0018] Appendix Figure 1 This is one of the structural schematic diagrams of the single-cavity multi-channel laparoscopic trocar of this utility model.

[0019] Appendix Figure 2 It is attached Figure 1 Enlarged structural diagram of section A in the middle.

[0020] Appendix Figure 3 This is the second schematic diagram of the structure of the single-lumen multi-channel laparoscopic trocar of this utility model.

[0021] The following are the reference numerals in the attached diagram: 1. Porous platform; 11. Inlet pipe; 12. Exhaust pipe; 13. Operating channel; 14. Limiting flange; 2. Membrane channel; 21. Flip ring; 22. Inner fixing ring; 23. Lifting strap; 24. Pull ring; 25. Constant diameter section; 26. Expanding diameter section; 3. First connecting ring; 31. First annular groove; 4. Second connecting ring; 41. Second annular groove. Detailed Implementation

[0022] The present invention will be further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined in this application.

[0023] like Figures 1-3 As shown, this utility model provides a single-lumen multi-channel laparoscopic trocar, including a multi-hole platform 1 and a membrane channel 2. The multi-hole platform 1 is provided with an air inlet pipe 11, an air outlet pipe 12 and multiple operating channels 13. The membrane channel 2 has a first shape with an enlarged diameter structure, the diameter of which gradually increases from the side close to the multi-hole platform 1 to the side away from the multi-hole platform 1, and the cone angle is 15° to 35°.

[0024] In one embodiment, the diameter expansion structure of the thin film channel 2 can be a full diameter expansion structure (e.g., Figure 1 As shown): The diameter expansion structure extends to the entire thin film channel 2, that is, from the end near the porous platform 1 to the end away from the porous platform 1, the diameter gradually increases.

[0025] In another embodiment, the diameter expansion structure of the thin film channel 2 can be a partial diameter expansion structure (such as...). Figure 3 As shown): The thin film channel (2) includes a constant diameter section 25 and an expanding diameter section 26. The upper part near the porous platform 1 is the constant diameter section 25 (with a constant diameter), while the end from the constant diameter section 25 away from the porous platform 1 is the expanding diameter section 26 (with a gradually increasing diameter).

[0026] The membrane channel 2 of this invention is designed with an enlarged diameter structure, which provides a larger space at the opening on the side away from the porous platform 1, increasing the angle and space for surgical instrument operation and improving convenience. At the same time, it keeps the membrane channel 2 with a smaller diameter at the incision site, reducing the risk of trauma to the patient and abdominal hernia.

[0027] In one embodiment, a flap 21 is provided at one end of the membrane channel 2 near the porous platform 1, and an inner fixing ring 22 is provided at the other end of the membrane channel 2 away from the porous platform 1, so as to better resist intra-abdominal pressure and maintain the angle and space for surgical instrument operation.

[0028] In one embodiment, the porous platform 1 and the thin film channel 2 are connected by a connecting assembly, which includes a first connecting ring 3 disposed on the thin film channel 2 and a second connecting ring 4 disposed on the porous platform 1. The inner cavity of the first connecting ring 3 is provided with a first annular groove 31 adapted to the flip ring 21. The first connecting ring 3 and the second connecting ring 4 are engaged or threaded together, making the connection simple and convenient.

[0029] In one embodiment, a limiting flange 14 is provided on the outer periphery of the bottom end of the porous platform 1, and a second annular groove 41 adapted to the limiting flange 14 is provided in the inner cavity of the second connecting ring 4. This helps to ensure a stable connection between the porous platform 1 and the thin film channel 2.

[0030] In one embodiment, a lifting strap 23 is provided on the inner fixing ring 22, and a pull ring 24 is provided at the end of the lifting strap 23 facing away from the inner fixing ring 22 to facilitate the removal of the membrane channel 2.

[0031] In one embodiment, the thin-film channel 2 is made of shape memory polymer (SMP) material. When the temperature of the thin-film channel 2 is lower than a first temperature, the thin-film channel 2 maintains a second shape; when the temperature of the thin-film channel 2 is higher than the first temperature, the thin-film channel 2 recovers and maintains a first shape, wherein the cone angle of the first shape is larger than the cone angle of the second shape, and on the side away from the porous platform, the diameter of the first shape is larger than the diameter of the second shape. The first temperature is 34℃~40℃, preferably, the first temperature is within the range of 36℃~38℃, close to human body temperature.

[0032] In this embodiment, when the thin film channel 2 is in the second shape, the thin film channel 2 has a slightly expanded diameter structure with a cone angle of less than 15°, such as 3°, 5°, 8°, or 10°. Alternatively, when the thin film channel 2 is in the second shape, it has a cylindrical structure similar to a straight cylinder, with its diameter remaining basically consistent from the end near the porous platform 1 to the end away from the porous platform 1, which is basically the same as the diameter of the end near the porous platform 1 when the thin film channel 2 is in the first shape.

[0033] In this embodiment, before use, the single-lumen multi-channel laparoscopic trocar is refrigerated and sterile. When in use, after the membrane channel 2 is placed in the abdominal incision, due to the influence of body temperature, the membrane channel 2 returns to its first shape, that is, the diameter of the opening at the end of the membrane channel 2 away from the multi-hole platform 1 becomes larger, so that the opening of the membrane channel 2 away from the multi-hole platform 1 has a larger space, which increases the angle and space for operation of surgical instruments and improves convenience. At the same time, the membrane channel 2 still maintains a smaller diameter at the incision, reducing the risk of trauma to the patient and the occurrence of abdominal hernia.

[0034] In one embodiment, the thickness of the thin film channel 2 in its first shape is 0.2–1.5 mm, such as 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.8 mm, 1 mm, or 1.2 mm; the height is 4–10 cm, such as 4 cm, 4.5 cm, 5 cm, 5.5 cm, 6 cm, 7 cm, 8 cm, 9 cm, or 10 cm; the diameter near the porous platform 1 is 2–3 cm, such as 2 cm, 2.2 cm, 2.5 cm, 2.8 cm, or 3 cm; and the diameter away from the porous platform 1 is 3–6 cm, such as 3 cm, 3.5 cm, 4 cm, 4.5 cm, 5 cm, 5.5 cm, or 6 cm. This ensures that the thin film channel 2 has both sufficient strength and provides sufficient operating space.

[0035] In one embodiment, the inner fixation ring 22 is made of SMP material. When the temperature of the inner fixation ring 22 is higher than a first temperature, the diameter of the inner fixation ring 22 increases by 10-50%. The first temperature is 34°C-40°C. Preferably, the first temperature is close to the human body temperature range of 36°C-38°C.

[0036] In this embodiment, the inner fixation ring 22 is made of SMP material. Due to the influence of body temperature, its diameter increases after being placed inside the human incision, which facilitates increasing the angle and space for surgical instrument operation.

Claims

1. A single-lumen multi-channel laparoscopic trocar, comprising a multi-hole platform and a membrane channel, wherein the multi-hole platform is provided with an air inlet tube, an air outlet tube, and multiple operating channels, characterized in that, The thin film channel has a first shape, the first shape having an expanding diameter structure. The thin film channel includes a constant diameter section and an expanding diameter section. The constant diameter section is disposed near the porous platform. The expanding diameter section extends from the constant diameter section to the side away from the porous platform. The diameter of the expanding diameter section gradually increases from the side near the porous platform to the side away from the porous platform, and the cone angle is 15°~35°.

2. The single-lumen multi-channel laparoscopic trocar according to claim 1, characterized in that, A flip ring is provided at one end of the thin film channel near the porous platform, and an inner fixing ring is provided at the other end of the thin film channel away from the porous platform.

3. The single-lumen multi-channel laparoscopic trocar according to claim 2, characterized in that, The porous platform and the thin film channel are connected by a connecting assembly, which includes a first connecting ring disposed on the thin film channel and a second connecting ring disposed on the porous platform. The inner cavity of the first connecting ring is provided with a first annular groove adapted to the flip ring. The first connecting ring and the second connecting ring are engaged or threaded together.

4. The single-lumen multi-channel laparoscopic trocar according to claim 3, characterized in that, The bottom outer periphery of the porous platform is provided with a limiting flange, and the inner cavity of the second connecting ring is provided with a second annular groove that is adapted to the limiting flange.

5. The single-lumen multi-channel laparoscopic trocar according to claim 2, characterized in that, The inner fixing ring is provided with a lifting strap, and a pull ring is provided at the end of the lifting strap that is away from the inner fixing ring.

6. The single-lumen multi-channel laparoscopic trocar according to claim 1, characterized in that, The thin film channel is made of SMP material. When the temperature of the thin film channel is lower than the first temperature, the thin film channel maintains the second shape. When the temperature of the thin film channel is higher than the first temperature, the thin film channel restores and maintains the first shape. The cone angle of the first shape is greater than the cone angle of the second shape, and on the side away from the porous platform, the diameter of the first shape is greater than the diameter of the second shape.

7. The single-lumen multi-channel laparoscopic trocar according to claim 2, characterized in that, The inner fixing ring is made of SMP material. When the temperature of the inner fixing ring is higher than the first temperature, the diameter of the inner fixing ring increases by 10% to 50%.

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