A flexible laparoscopic trocar

Abstract

This invention provides a flexibly steerable laparoscopic trocar, belonging to the field of medical device technology. It includes a rotating mechanism for flexible adjustment and positioning of the trocar's overall angle; a connecting component, mounted on the rotating mechanism, for connecting the trocar's main body to other auxiliary structures; the connecting component includes a connecting sleeve and a fixing block. The connecting sleeve is fitted onto the outside of the rotating shaft of the rotating mechanism for rotatable connection, and the fixing block is located at one end of the connecting sleeve for fixing the main body of the trocar. This invention, through the cooperation of the rotating mechanism and the connecting component, achieves multi-degree-of-freedom flexible steering and stable positioning of the trocar; the arc-shaped gripper, threaded rod, and positioning pin work together to ensure adjustable puncture angle and reliable locking; the anti-slip structure of the gripping surface and the elastic positioning pin design improve the instrument's gripping firmness and the convenience of angle adjustment, thereby improving the efficiency and safety of puncture operations during laparoscopic surgery.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a laparoscopic trocar that can be flexibly steered. Background Technology

[0002] In existing technologies, traditional laparoscopic trocars typically have a fixed puncture angle or can only be adjusted to a limited extent, making them difficult to adapt to complex surgical paths and changing operational needs. This limitation is particularly pronounced in minimally invasive surgeries requiring precise puncture and flexible operation, potentially leading to low surgical efficiency and inaccurate positioning. Furthermore, some adjustable trocars suffer from complex structures, inconvenient operation, and unstable clamping, making them prone to loosening or displacement during surgery, increasing surgical risks.

[0003] In the existing technology, traditional laparoscopic trocars are mostly fixed-angle structures or have simple adjustment mechanisms, which are difficult to meet the needs of complex surgical approaches for multi-angle and precise positioning. They are also inconvenient to operate when adjusting the direction during the operation, and are prone to positional displacement or loosening, which affects puncture accuracy and surgical safety. Some adjustable trocars have complex structures, are not firmly clamped, and lack effective limiting and anti-loosening designs, which makes the instruments easy to shake or rotate accidentally during use. Utility Model Content

[0004] The purpose of this invention is to provide a laparoscopic trocar that can be flexibly steered, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A flexible, steerable laparoscopic trocar, including The rotating mechanism is used to flexibly adjust and position the overall angle of the puncture device; A connector, located on the rotating mechanism, is used to connect the puncture device body with other auxiliary structures; The connector includes a connecting sleeve and a fixing block. The connecting sleeve is sleeved outside the rotating shaft of the rotating mechanism to achieve a rotatable connection. The fixing block is located at one end of the connecting sleeve and is used to fix the main body of the puncture device. Clamping assembly for stably clamping puncture needles or endoscopes; A positioning component, disposed on the clamping component, is used to achieve precise adjustment and locking of the puncture direction; The positioning assembly includes an arc-shaped gripper, a threaded rod, a fixing bolt, and a positioning pin.

[0006] In a preferred embodiment of this utility model, the arc-shaped gripper is movably connected to the clamping assembly and can swing along an arc-shaped trajectory to adjust the puncture angle. The threaded rod passes through the arc-shaped gripper and is threadedly engaged with it to drive the gripper to open and close to achieve clamping or release. The fixing bolt is located at the hinge of the arc-shaped gripper and is used to lock its rotational freedom after adjustment. The positioning pin is located between the arc-shaped gripper and the clamping assembly and is used to insert into the mating hole at a specific angle position to achieve rapid positioning and limiting of the angle.

[0007] As a preferred embodiment of this utility model, the inner wall of the connecting sleeve is provided with anti-slip texture or elastic washer, which can enhance the friction between the connecting sleeve and the rotating shaft of the rotating mechanism and prevent relative sliding during use.

[0008] As a preferred embodiment of this utility model, the clamping surface of the arc-shaped gripper is provided with a rubber layer or anti-slip groove, which can effectively prevent the puncture needle or endoscope from axially sliding or rotating during the clamping process.

[0009] As a preferred embodiment of this utility model, the positioning pin is an elastic pin structure, which can be quickly inserted and removed by pressing, facilitating rapid positioning and switching at different angles.

[0010] As a preferred embodiment of this utility model, a spring washer is provided between the fixing bolt and the arc-shaped clamp, which can provide pre-tightening force when locking, prevent loosening due to vibration, and improve structural stability.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the rotation mechanism and connecting parts together, the puncture device can be flexibly rotated and stably positioned with multiple degrees of freedom; the arc-shaped gripper, threaded rod and positioning pin work together to ensure that the puncture angle is adjustable and the locking is reliable; the anti-slip structure of the clamping surface and the elastic positioning pin design improve the firmness of the instrument clamping and the convenience of angle adjustment, thereby improving the efficiency and safety of puncture operation in laparoscopic surgery. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective; Figure 3 This is a side view of the present invention; Figure 4 This is a side view schematic diagram of another state of the present invention.

[0013] In the figure: 100, rotating mechanism; 101, connecting piece; 1011, connecting sleeve; 1012, fixing block; 200, clamping assembly; 201, positioning assembly; 2011, arc-shaped gripper; 2012, threaded rod; 2013, fixing bolt; 2014, positioning pin. Detailed Implementation

[0014] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0016] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0017] Example Reference Figures 1-4 This embodiment of the present invention provides a flexibly steerable laparoscopic trocar, comprising: The rotating mechanism 100 is used to flexibly adjust and position the overall angle of the puncture device; Connector 101, located on rotating mechanism 100, is used to connect the puncture device body with other auxiliary structures; The connector 101 includes a connecting sleeve 1011 and a fixing block 1012. The connecting sleeve 1011 is sleeved on the outside of the rotating shaft of the rotating mechanism 100 to achieve a rotatable connection. The fixing block 1012 is located at one end of the connecting sleeve 1011 and is used to fix the main body of the puncture device. Clamping assembly 200 is used to stably clamp a puncture needle or endoscope; The positioning component 201 is disposed on the clamping component 200 and is used to achieve precise adjustment and locking of the puncture direction; The positioning assembly 201 includes an arc-shaped gripper 2011, a threaded rod 2012, a fixing bolt 2013, and a positioning pin 2014.

[0018] Specifically, the arc-shaped gripper 2011 is movably connected to the clamping assembly 200 and can swing along the arc-shaped trajectory to adjust the puncture angle. The threaded rod 2012 passes through the arc-shaped gripper 2011 and is threadedly engaged with it to drive the gripper to open and close to achieve clamping or release. The fixing bolt 2013 is located at the hinge of the arc-shaped gripper 2011 and is used to lock its rotational freedom after adjustment. The positioning pin 2014 is located between the arc-shaped gripper 2011 and the clamping assembly 200 and is used to insert into the mating hole at a specific angle position to achieve rapid positioning and limiting of the angle.

[0019] It should be noted that the arc-shaped gripper 2011 and the clamping assembly 200 are connected by a hinge shaft, allowing it to swing smoothly along a preset arc trajectory, thereby achieving continuous adjustment of the puncture angle. In conjunction with the advancing or retracting action of the threaded rod 2012, the clamping and releasing of the gripper can be precisely controlled, ensuring that the puncture needle or endoscope remains stable during the adjustment process and avoiding accidental slippage.

[0020] Specifically, the inner wall of the connecting sleeve 1011 is provided with anti-slip texture or elastic washer, which can enhance the friction between it and the rotating shaft of the rotating mechanism 100 and prevent relative sliding during use.

[0021] It should be noted that the anti-slip texture or elastic washer provided on the inner wall of the connecting sleeve 1011 can form a tight fit when it is engaged with the rotating shaft of the rotating mechanism 100, which significantly increases the frictional resistance between the two and effectively prevents relative sliding or positional displacement caused by external force during the adjustment of the puncture angle or use of the puncture instrument, thereby improving the stability and positioning reliability of the overall structure.

[0022] Specifically, the clamping surface of the arc-shaped gripper 2011 is provided with a rubber layer or anti-slip groove, which can effectively prevent the puncture needle or endoscope from axially sliding or rotating during the clamping process.

[0023] It should be noted that the clamping surface of the arc-shaped gripper 2011 is equipped with a rubber layer or anti-slip groove, which not only increases the contact friction with the puncture needle or the outer wall of the endoscope to prevent axial slippage, but also plays a buffering and protective role, avoiding direct metal contact that could damage the instrument surface. At the same time, it effectively inhibits rotational loosening caused by surgical vibration, ensuring a firm and reliable clamping.

[0024] Specifically, the positioning pin 2014 is a flexible pin structure that allows for quick insertion and removal by pressing, facilitating rapid positioning and switching at different angles and positions.

[0025] It should be noted that the positioning pin 2014 adopts an elastic pin structure, which can be quickly retracted and released by pressing the pin body. When the arc-shaped gripper 2011 is adjusted to the required angle, the positioning pin 2014 automatically springs into the corresponding positioning hole on the clamping component 200 to complete the angle locking. The operation is convenient and the response is fast. It is suitable for scenarios where frequent adjustments are required during surgery, thus improving the efficiency of operation.

[0026] Specifically, a spring washer is provided between the fixing bolt 2013 and the arc-shaped clamp 2011, which can provide preload when locking to prevent loosening due to vibration and improve structural stability.

[0027] It should be noted that the spring washer provided between the fixing bolt 2013 and the arc-shaped clamp 2011 can continuously provide elastic preload after the bolt is tightened, compensate for minor loosening caused by temperature changes or mechanical vibration, prevent the connection from coming loose, significantly improve the long-term stability and safety of the structure, and ensure that the puncture direction remains accurate throughout the operation.

[0028] In use, the flexibly steerable laparoscopic trocar is first mounted on the surgical support or fixation arm. The overall orientation of the trocar is adjusted by the rotating mechanism 100. The operator manually adjusts the angle of the trocar according to the surgical field of view and puncture path requirements. The rotating mechanism 100 can adopt a ball joint or gear structure to achieve multi-degree-of-freedom flexible steering. After adjustment, the position is fixed by the built-in locking device. The connecting sleeve 1011 in the connecting piece 101 is fitted onto the rotating shaft of the rotating mechanism. Its inner wall is provided with anti-slip texture or elastic washer to ensure a stable connection and prevent relative slippage during use. The fixing block 1012 is used to fix the main body of the trocar. Then, the puncture needle or endoscope is inserted into the clamping assembly 200 and the threaded rod 2012 is rotated. The curved gripper 2011 opens and closes along the hinge point to clamp or release the instrument. When the puncture direction needs to be adjusted, the fixing bolt 2013 is loosened, and the curved gripper 2011 can swing along the curved trajectory to change the puncture angle. After adjusting to the ideal position, the fixing bolt 2013 is tightened to lock the hinge point, and the positioning pin 2014 is inserted into the corresponding positioning hole on the clamping assembly 200 to achieve rapid angle positioning and double limit. The positioning pin 2014 is an elastic pin structure that can be pulled out or inserted by pressing, making it easy to operate. The clamping surface of the curved gripper 2011 is provided with a rubber layer or anti-slip groove, which can effectively prevent the instrument from slipping or rotating. A spring washer is also provided between the fixing bolt 2013 and the gripper to provide continuous preload and prevent loosening due to vibration.

[0029] In summary, by setting up the rotation mechanism 100 and the connecting piece 101 in cooperation, the trocar achieves flexible multi-degree-of-freedom steering and stable positioning; the arc-shaped gripper 2011 works in conjunction with the threaded rod 2012 and the positioning pin 2014 to ensure that the puncture angle is adjustable and the locking is reliable. The anti-slip structure of the clamping surface and the design of the elastic positioning pin improve the firmness of the instrument clamping and the convenience of angle adjustment, thereby improving the efficiency and safety of puncture operation in laparoscopic surgery.

[0030] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0031] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0032] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0033] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A flexible steerable laparoscopic puncture device, characterized by: include, The rotating mechanism (100) is used to achieve flexible adjustment and positioning of the overall angle of the puncture device; A connector (101) is provided on the rotating mechanism (100) and is used to connect the puncture device body with other auxiliary structures; The connector (101) includes a connecting sleeve (1011) and a fixing block (1012). The connecting sleeve (1011) is sleeved on the outside of the rotating shaft of the rotating mechanism (100) to achieve a rotatable connection. The fixing block (1012) is located at one end of the connecting sleeve (1011) and is used to fix the main body of the puncture device. Clamping assembly (200) for stably clamping a puncture needle or endoscope; A positioning component (201) is disposed on the clamping component (200) for precisely adjusting and locking the puncture direction; The positioning assembly (201) includes an arc-shaped gripper (2011), a threaded rod (2012), a fixing bolt (2013), and a positioning pin (2014).

2. The flexible steerable laparoscopic puncture device according to claim 1, wherein: The arc-shaped gripper (2011) is movably connected to the clamping assembly (200) and can swing along an arc-shaped trajectory to adjust the puncture angle. The threaded rod (2012) passes through the arc-shaped gripper (2011) and is threadedly engaged with it to drive the gripper to open and close to achieve clamping or release. The fixing bolt (2013) is located at the hinge of the arc-shaped gripper (2011) and is used to lock its rotational freedom after adjustment. The positioning pin (2014) is located between the arc-shaped gripper (2011) and the clamping assembly (200) and is used to insert into the mating hole at a specific angle position to achieve rapid positioning and limiting of the angle.

3. The flexible steerable laparoscopic puncture device according to claim 2, wherein: The inner wall of the connecting sleeve (1011) is provided with anti-slip texture or elastic washer, which can enhance the friction between the connecting sleeve and the rotating shaft of the rotating mechanism (100) and prevent relative sliding during use.

4. The flexible steerable laparoscopic puncture device according to claim 3, wherein: The clamping surface of the arc-shaped gripper (2011) is provided with a rubber layer or anti-slip groove, which can effectively prevent the puncture needle or endoscope from axially sliding or rotating during the clamping process.

5. The flexible steerable laparoscopic puncture device according to claim 4, wherein: The positioning pin (2014) is a flexible pin structure that allows for quick insertion and removal by pressing, facilitating rapid positioning and switching at different angles.

6. The flexible steerable laparoscopic puncture device according to claim 5, wherein: A spring washer is provided between the fixing bolt (2013) and the arc-shaped clamp (2011) to provide preload when locking, prevent loosening due to vibration, and improve structural stability.

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