Laparoscopic surgical device with trigger self-locking function

Abstract

The present application relates to the technical field of laparoscopic surgery, and specifically discloses a laparoscopic surgical device with trigger self-locking function, wherein the trigger is rotatably arranged in the shell, the trigger is provided with a locking pin, the trigger can rotate between an abutting position and a release position, and the first locking position of the trigger is located between the abutting position and the release position; the locking member is slidably arranged in the shell, the locking member is provided with a locking groove, the locking member can slide between an initial position and a avoiding position, the second locking position of the locking member is located between the initial position and the avoiding position, the locking pin can be locked at the groove bottom of the locking groove by pressing the trigger for the first time; the locking pin is moved out of the locking groove by pressing the trigger for the second time, and the locking member moves to the initial position after the trigger moves from the abutting position to the release position. With the above arrangement, the self-locking and unlocking of the trigger are completed in the process of operating the trigger twice, the surgical efficiency is improved, and the surgical effect is improved.

Description

Technical Field

[0001] This invention relates to the field of laparoscopic surgery technology, and in particular to a laparoscopic surgical device with a trigger self-locking function. Background Technology

[0002] Currently, during laparoscopic surgery, surgical instruments are used to open and close the jaws of the instruments by using a hand trigger. However, depending on the scenario, the hand trigger needs to be locked and fixed after the jaws are closed, and it will not return to its initial state after the hand is released.

[0003] Current methods typically require one hand to control the handheld trigger and the other hand to operate a locking mechanism to lock the trigger. When the jaws need to be opened, the locking mechanism is operated again to release the trigger and return it to its initial position. This method is cumbersome, the additional operation of the locking mechanism wastes time and affects surgical efficiency. Furthermore, the operation process can affect the position of the jaws, thus impacting the surgical outcome.

[0004] Therefore, there is an urgent need to research a laparoscopic surgical device with a trigger self-locking function, so as to enable the trigger to self-lock and unlock during the triggering process, thereby improving surgical efficiency and surgical outcomes. Summary of the Invention

[0005] The purpose of this invention is to provide a laparoscopic surgical device with a trigger self-locking function, so as to enable the trigger to self-lock and unlock during the process of pulling the trigger, thereby improving surgical efficiency and surgical outcomes.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a laparoscopic surgical device with a trigger self-locking function, the laparoscopic surgical device with a trigger self-locking function comprising:

[0008] case;

[0009] A trigger, rotatably mounted on the housing, the trigger having a locking pin, the trigger being rotatable between an engagement position and a release position, and a first locking position of the trigger being located between the engagement position and the release position;

[0010] A locking member is slidably disposed on the housing. The locking member has a locking groove and can slide between an initial position and a clearance position. A second locking position of the locking member is located between the initial position and the clearance position. During the process of the trigger moving from the release position to the abutment position, the locking member moves to the clearance position. During the process of the trigger moving from the abutment position to the first locking position, the locking member moves to the second locking position. When the trigger is in the first locking position and the locking member is in the second locking position, the locking pin is locked to the bottom of the locking groove. During the process of the trigger moving from the first locking position to the abutment position, the locking pin moves out of the locking groove. After the trigger moves from the abutment position to the release position, the locking member moves back to the initial position.

[0011] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the laparoscopic surgical device with a trigger self-locking function includes a first elastic element and a second elastic element. The first elastic element and the second elastic element are both disposed between the locking element and the housing. The first elastic element and the second elastic element work together to stop the locking element in the initial position.

[0012] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the locking member is provided with a mounting cavity, the housing is provided with a stop portion, the stop portion is located in the mounting cavity, the first elastic member and the second elastic member are both provided in the mounting cavity, one end of the first elastic member abuts against the upper side wall of the mounting cavity, and the other end abuts against the upper side surface of the stop portion, one end of the second elastic member abuts against the lower side wall of the mounting cavity, and the other end abuts against the lower side surface of the stop portion.

[0013] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, both the first elastic element and the second elastic element are compression springs.

[0014] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the housing is provided with a sliding groove, and the locking element is slidably disposed in the sliding groove.

[0015] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the locking groove is V-shaped, and the opening direction of the locking groove is opposite to the trigger and forms an acute angle with the sliding direction of the locking member.

[0016] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the locking groove is provided with two locking grooves, which are spaced apart along the thickness direction of the housing. When the trigger is in the first locking position and the locking member is in the second locking position, both ends of the locking pin can be locked in one of the locking grooves.

[0017] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the locking member is provided with an inlet ramp, which is located above the locking groove. The inlet ramp is inclined upward in a direction away from the trigger. During the process of the trigger moving from the release position to the abutment position, the locking pin abuts against the inlet ramp and moves the locking member to the avoidance position.

[0018] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the locking member is provided with an outlet channel located below the locking groove. During the process of the trigger moving from the abutment position to the release position, the locking pin moves out of the locking member from the outlet channel.

[0019] As an optional technical solution for a laparoscopic surgical device with a trigger self-locking function, the laparoscopic surgical device with a trigger self-locking function includes a third elastic element, which is disposed between the trigger and the housing, and is used to stop the trigger in the release position.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention provides a laparoscopic surgical device with a trigger self-locking function. The device comprises a locking pin on the trigger and a locking groove on the locking member. The trigger can rotate between an engagement position and a release position, with a first locking position between the engagement and release positions. The locking member can slide between an initial position and a clearance position, with a second locking position between the initial and clearance positions. During the movement of the trigger from the engagement position to the first locking position, the locking member moves to the second locking position. When the trigger is in the first locking position and the locking member is in the second locking position, the locking pin is locked to the bottom of the locking groove. During the movement of the trigger from the first locking position to the engagement position, the locking pin moves out of the locking groove. After the trigger moves from the engagement position to the release position, the locking member moves back to the initial position. The above-mentioned setup enables the trigger to lock and unlock in two separate trigger operations, thus avoiding the need to use the other hand to operate the locking assembly. The locking pin and locking groove simplify the locking and unlocking process, improve surgical efficiency, and enhance surgical outcomes. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a laparoscopic surgical device with trigger self-locking function in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal structure of the laparoscopic surgical device with trigger self-locking function in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the laparoscopic surgical device with trigger self-locking function in an embodiment of the present invention, showing the locking pin and the guide bevel abutting against each other;

[0025] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0026] Figure 5 This is a schematic diagram of the trigger structure in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the locking component from a first-view perspective in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of the locking member from a second perspective in an embodiment of the present invention.

[0029] In the picture:

[0030] 100. Housing; 110. Stop; 120. Sliding groove;

[0031] 200. Trigger; 210. Locking pin; 220. Rotating pin;

[0032] 300. Locking element; 310. Locking groove; 311. Limiting element; 320. Guide slope; 330. Outlet channel; 340. Mounting cavity;

[0033] 400. First elastic element;

[0034] 500. Second elastic element. Detailed Implementation

[0035] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0036] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions. Furthermore, "above," "on top of," and "over" the first feature in relation to the second feature includes the first feature directly above and diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "under," and "below" the first feature in relation to the second feature includes the first feature directly below and diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] like Figures 1 to 7As shown, this embodiment provides a laparoscopic surgical device with a trigger self-locking function. The device includes a housing 100, a trigger 200, and a locking member 300. The trigger 200 is rotatably mounted on the housing 100 and has a locking pin 210. The trigger 200 can rotate between an engagement position and a release position, with a first locking position between the engagement and release positions. The locking member 300 is slidably mounted on the housing 100 and has a locking groove 310. The locking member 300 can slide between an initial position and a clearance position. The second locking position of the locking member 300... The trigger 200 is positioned between the initial position and the avoidance position. During the movement of the trigger 200 from the release position to the engagement position, the locking member 300 moves to the avoidance position. During the movement of the trigger 200 from the engagement position to the first locking position, the locking member 300 moves to the second locking position. When the trigger 200 is in the first locking position and the locking member 300 is in the second locking position, the locking pin 210 is locked to the bottom of the locking groove 310. During the movement of the trigger 200 from the first locking position to the engagement position, the locking pin 210 moves out of the locking groove 310. After the trigger 200 moves from the engagement position to the release position, the locking member 300 moves back to the initial position. This configuration allows the trigger 200 to lock and unlock in two separate operations, avoiding the need to operate the locking assembly with the other hand. The locking pin 210 and locking groove 310 simplify the locking and unlocking process of the trigger 200, improving surgical efficiency and outcomes.

[0040] The trigger 200 is rotatably mounted on the housing 100 via a rotating pin 220. The housing 100 is provided with a rotating groove, and the trigger 200 is fixedly connected to the rotating pin 220, which is rotatably mounted in the rotating groove.

[0041] During surgery, the trigger 200 controls the opening and closing of the jaws. When the trigger 200 is in the first locked position, the jaws are closed; when the trigger 200 is in the released position, the jaws are open. Ideally, the movement of the locking element 300 and the trigger 200 should be smooth during both the closing and opening processes to avoid violent impacts with the housing 100, which could cause vibrations in the housing 100 and affect the position of the surgical device, thus impacting surgical precision.

[0042] The laparoscopic surgical device with trigger self-locking function includes a first elastic element 400 and a second elastic element 500. Both the first elastic element 400 and the second elastic element 500 are located between the locking element 300 and the housing 100. The first elastic element 400 and the second elastic element 500 work together to stop the locking element 300 in its initial position. This arrangement eliminates the need for a stop on the housing 100 to limit the locking element 300 in its initial position, thus avoiding impacts caused by the locking element 300 moving to the initial position and the stop, preventing vibration of the housing 100, and improving the stability of the housing 100 during surgery. Specifically, because no stop is provided, after the locking element 300 moves from the second locking position to the initial position, it moves to a buffer position and, under the action of the first elastic element 400 and the second elastic element 500, eventually comes to rest in the initial position. The buffer position is located above the initial position.

[0043] Regarding the installation method of the first elastic member 400 and the second elastic member 500, in this embodiment, the locking member 300 is provided with an installation cavity 340, and the housing 100 is provided with a stop portion 110. The stop portion 110 is located inside the installation cavity 340. The first elastic member 400 and the second elastic member 500 are both provided inside the installation cavity 340. One end of the first elastic member 400 abuts against the upper side wall of the installation cavity 340, and the other end abuts against the upper side surface of the stop portion 110. One end of the second elastic member 500 abuts against the lower side wall of the installation cavity 340, and the other end abuts against the lower side surface of the stop portion 110.

[0044] Specifically, both the first elastic element 400 and the second elastic element 500 are compression springs. With the above arrangement, when the locking member 300 moves from the initial position to the avoidance position, the first elastic element 400 is compressed, and the second elastic element 500 is not subjected to force. When the locking member 300 is in the second locking position, the first elastic element 400 is compressed, and the second elastic element 500 is not subjected to force. When the locking member 300 is in the initial position, both the first elastic element 400 and the second elastic element 500 are compressed.

[0045] In this embodiment, the housing 100 is provided with a sliding groove 120, and the locking member 300 is slidably disposed in the sliding groove 120. The sliding groove 120 constrains the sliding direction of the locking member 300. The sliding groove 120 is formed by two parallel sliding strips protruding from the housing 100. That is, the locking member 300 is slidably disposed between the two sliding strips. The sliding strips also act as reinforcing ribs, strengthening the housing 100.

[0046] Considering that the locking of trigger 200 is crucial, because if trigger 200 is not moved into position and is not locked by locking device 300, when trigger 200 is released, trigger 200 will automatically move to the release position, which will cause the jaws to reopen, resulting in failure of hemostasis and making it impossible to continue the surgery. It will be necessary to pull trigger 200 again, which will seriously affect the surgical effect and efficiency.

[0047] Therefore, when the jaws close, it is necessary to know for certain that the trigger 200 has moved into position, that is, to know for certain that the trigger 200 has moved to the first locking position. For this purpose, in this embodiment, the locking groove 310 is V-shaped, and the opening direction of the locking groove 310 is opposite to the trigger 200 and forms an acute angle with the sliding direction of the locking member 300. This setting ensures that when the trigger 200 moves to the abutment position, that is, it moves to the entrance of the locking groove 310, at this time, slightly releasing the trigger 200 will cause the locking member 300 to move upward to the second locking position under the action of the first elastic member 400. Since the locking pin 210 and the bottom of the locking groove 310 abut against each other when the locking member 300 moves to the second locking position, an impact occurs and a clicking sound is emitted. After hearing the sound, the user clearly knows that the trigger 200 has been locked and can confidently release the trigger 200. This improves the smoothness and effectiveness of the surgery. In this embodiment, the opening direction of the locking groove 310 is inclined upward.

[0048] The locking member 300 is provided with a receiving groove and a limiting member 311. The limiting member 311 is directly opposite the opening of the receiving groove, which is triangular in shape. The receiving groove and the limiting member 311 are connected by a locking groove 310 that forms a V-shape. The limiting member 311 is designed to prevent the locking member 300 from moving directly upward to the initial position when the trigger 200 is moved to the abutment position. During the upward movement of the locking member 300, the locking pin 210 is stopped by the limiting member 311 and can only enter the bottom of the locking groove 310.

[0049] Two locking grooves 310 are provided, spaced apart along the thickness direction of the housing 100. When the trigger 200 is in the first locking position and the locking member 300 is in the second locking position, both ends of the locking pin 210 can be locked into one locking groove 310. This arrangement makes the cooperation between the locking pin 210 and the locking groove 310 more balanced and stable. The thickness direction is left-right.

[0050] The locking member 300 is provided with an inlet ramp 320 communicating with the entrance of the locking groove 310. The inlet ramp 320 is located above the locking groove 310 and is inclined upwards in a direction away from the trigger 200. During the process of the trigger 200 moving from the release position to the engagement position, the locking pin 210 abuts against the inlet ramp 320, causing the locking member 300 to move to the avoidance position. This arrangement allows the locking pin 210 to not only have a locking function but also the function of pushing the locking member 300 to move, serving two purposes, simplifying the structure, and improving practicality and stability of use. The communication between the inlet ramp 320 and the entrance of the locking groove 310 means that the locking pin 210 can enter the locking groove 310 after passing through the inlet ramp 320. In other words, the inlet ramp 320 is located above the entrance of the locking groove 310, and the locking pin 210 enters the entrance of the locking groove 310 after passing the uppermost end of the inlet ramp 320.

[0051] There are two guide slopes 320, and the two guide slopes 320 are respectively connected to two locking grooves 310.

[0052] The locking member 300 has a discharge channel 330 communicating with the outlet of the locking groove 310. The discharge channel 330 is located below the locking groove 310. During the process of the trigger 200 moving from the abutment position to the release position, the locking pin 210 moves out of the discharge channel 330, and then the locking member 300 moves to the initial position. The discharge channel 330 is inclined upward in a direction away from the trigger 200. This arrangement prevents the locking member 300 from sliding upward a certain distance under the action of the discharge channel 330 and the locking pin 210 between the second locking position and the initial position. This process is controlled by hand and the movement speed is slow. When the locking pin 210 and the discharge channel 330 disengage, the locking member 300 moves upward at an accelerated speed under the action of the first elastic member 400. The design of the export channel 330 reduces the distance that the locking member 300 needs to accelerate upward, thereby reducing the speed at which the locking member 300 moves to the initial position, thus improving the overall smoothness and improving the quality of the surgery; in addition, it also shortens the distance between the buffer position and the initial position, making the structure more compact.

[0053] There are two outlet channels 330, and the two outlet channels 330 are respectively connected to the outlets of the two locking grooves 310. The locking pin 210 enters the outlet channel 330 after passing the outlet of the locking groove 310.

[0054] The laparoscopic surgical device with trigger self-locking function includes a third elastic element located between the trigger 200 and the housing 100, which is used to stop the trigger 200 in the released position. This setting allows the trigger 200 to automatically return to the released position, simplifying the user's operation and improving the smoothness of the surgery.

[0055] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A laparoscopic surgical device having a trigger lockout function, characterized by, The device comprises: a shell (100); a trigger (200) rotatably arranged on the shell (100), the trigger (200) being provided with a locking pin (210), the trigger (200) being rotatable between an abutting position and a releasing position, a first locking position of the trigger (200) being between the abutting position and the releasing position; a locking member (300) slidably arranged on the shell (100), the locking member (300) being provided with a locking groove (310), the locking member (300) being slidable between an initial position and an avoiding position, a second locking position of the locking member (300) being between the initial position and the avoiding position, the locking member (300) moving to the avoiding position when the trigger (200) moves from the releasing position to the abutting position, the locking member (300) moving to the second locking position when the trigger (200) moves from the abutting position to the first locking position, the locking pin (210) being locked at the groove bottom of the locking groove (310) when the trigger (200) is in the first locking position and the locking member (300) is in the second locking position, the locking pin (210) moving out of the locking groove (310) when the trigger (200) moves from the first locking position to the abutting position, the locking member (300) moving to the initial position after the trigger (200) moves from the abutting position to the releasing position.

2. The laparoscopic surgical device with trigger self-locking function according to claim 1, characterized in that, The device further comprises a first elastic member (400) and a second elastic member (500), both of which are arranged between the locking member (300) and the shell (100), the first elastic member (400) and the second elastic member (500) jointly acting to stop the locking member (300) at the initial position.

3. The laparoscopic surgical device with trigger self-locking function according to claim 2, characterized in that, The locking member (300) is provided with a mounting cavity (340), the shell (100) is provided with a stop portion (110), the stop portion (110) being located in the mounting cavity (340), the first elastic member (400) and the second elastic member (500) being arranged in the mounting cavity (340), one end of the first elastic member (400) abutting an upper side wall of the mounting cavity (340) and the other end abutting an upper side of the stop portion (110), one end of the second elastic member (500) abutting a lower side wall of the mounting cavity (340) and the other end abutting a lower side of the stop portion (110).

4. The laparoscopic surgical device with trigger self-locking function according to claim 3, characterized in that, Both the first elastic member (400) and the second elastic member (500) are compression springs.

5. The laparoscopic surgical device with trigger self-locking function according to claim 1, characterized in that, The shell (100) is provided with a sliding groove (120), the locking member (300) being slidably arranged in the sliding groove (120).

6. The laparoscopic surgical device with trigger self-locking function according to any one of claims 1-5, characterized in that, The locking groove (310) is V-shaped, the opening direction of the locking groove (310) being away from the trigger (200) and forming an acute angle with the sliding direction of the locking member (300).

7. The laparoscopic surgical device with trigger self-locking function according to claim 6, characterized in that, The locking grooves (310) are provided with two, two said locking grooves (310) are spaced apart along the thickness direction of the shell (100), in the state that the trigger (200) is located at the first locking position and the locking piece (300) is located at the second locking position, two ends of the locking pin (210) can be locked in one of the locking grooves (310) respectively.

8. The laparoscopic surgical device with trigger self-locking function according to claim 6, characterized in that, The locking piece (300) is provided with a guide-in slope (320), the guide-in slope (320) is located above the locking groove (310), the guide-in slope (320) is inclined upward in the direction away from the trigger (200), in the process that the trigger (200) moves from the release position to the abutting position, the locking pin (210) abuts against the guide-in slope (320), and the locking piece (300) is moved to the avoiding position.

9. The laparoscopic surgical device with trigger self-locking function according to claim 6, characterized in that, The locking piece (300) is provided with a guide-out channel (330), the guide-out channel (330) is located below the locking groove (310), in the process that the trigger (200) moves from the abutting position to the release position, the locking pin (210) moves out of the locking piece (300) from the guide-out channel (330).

10. The laparoscopic surgical device with trigger lockout functionality of claim 1, wherein, The laparoscopic surgical device with trigger self-locking function comprises a third elastic member, which is arranged between the trigger (200) and the shell (100) and is used for stopping the trigger (200) at the release position.

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