CN220588314U - Laparoscopic surgical device with trigger self-locking function - Google Patents

Abstract

The utility model relates to the technical field of laparoscopic surgery, and particularly discloses a laparoscopic surgical device with a trigger self-locking function, wherein a trigger is rotatably arranged on a shell, the trigger is provided with a locking pin, the trigger can rotate between an abutting position and a releasing position, and a first locking position of the trigger is positioned between the abutting position and the releasing position; the locking piece is arranged on the shell in a sliding manner, the locking piece is provided with a locking groove, the locking piece can slide between an initial position and an avoidance position, a second locking position of the locking piece is positioned between the initial position and the avoidance position, and the first pressing spanner can lock the locking pin at the bottom of the locking groove; pressing the trigger a second time causes the locking pin to move out of the locking groove, and the locking piece moves to the initial position after the trigger moves from the abutting position to the releasing position. By means of the arrangement, the trigger is self-locked and unlocked in the process of operating the trigger twice, the operation efficiency is improved, and the operation effect is improved.

Description

Laparoscopic surgical device with trigger self-locking function

Technical Field

The utility model relates to the technical field of laparoscopic surgery, in particular to a laparoscopic surgical device with a trigger self-locking function.

Background

At present, in the laparoscopic surgery surgical instrument, when the tissue is cut and hemostasis is carried out, the hand-held trigger is required to be used for opening and closing the jaw, meanwhile, when the hand-held trigger is closed, the hand-held trigger is required to be locked and fixed after the jaw is closed, and the hand-held trigger cannot return to an initial state after the hand is released.

Existing solutions typically require one hand to control the hand-held trigger and the other hand to operate the locking assembly to lock the hand-held trigger in place, such that the hand-held trigger loses restraint and moves to an initial position when the jaws are required to be opened by again operating the locking assembly. According to the scheme, the operation is complicated, the time is wasted in additionally operating the locking assembly, the operation efficiency is affected, and in addition, the operation process can affect the position of the jaw, so that the operation effect is affected.

Therefore, there is a need to develop a laparoscopic surgical device with a trigger self-locking function to achieve self-locking and unlocking of the trigger during the trigger pulling process, to improve the surgical efficiency and to improve the surgical effect.

Disclosure of Invention

The utility model aims to provide a laparoscopic surgical device with a trigger self-locking function, so that the trigger can be self-locked and unlocked in the trigger pulling process, the surgical efficiency is improved, and the surgical effect is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the present utility model provides a laparoscopic surgical device with a trigger self-locking function, comprising:

a housing;

a trigger rotatably provided to the housing, the trigger being provided with a lock pin, the trigger being rotatable between an abutment position and a release position, a first lock position of the trigger being located between the abutment position and the release position;

the locking piece is arranged on the shell in a sliding mode, a locking groove is formed in the locking piece, the locking piece can slide between an initial position and an avoidance position, a second locking position of the locking piece is located between the initial position and the avoidance position, the locking piece moves to the avoidance position in the process of moving from the release position to the abutting position, the locking piece moves to the second locking position in the process of moving from the abutting position to the first locking position, and the locking pin is locked at the bottom of the locking groove in the state that the trigger is located at the first locking position and the locking piece is located at the second locking position; the trigger moves from the first locking position to the abutting position, the locking pin moves out of the locking groove, and the locking piece moves to the initial position after the trigger moves from the abutting position to the releasing position.

As an alternative solution of the laparoscopic surgical device with the trigger self-locking function, the laparoscopic surgical device with the trigger self-locking function includes a first elastic member and a second elastic member, the first elastic member and the second elastic member are both disposed between the locking member and the housing, and the first elastic member and the second elastic member cooperate to stop the locking member at the initial position.

As an alternative technical scheme of laparoscopic surgery device with trigger self-locking function, the locking piece is equipped with the installation cavity, the casing is equipped with the backstop portion, the backstop portion is located the installation cavity is interior, first elastic component with the second elastic component is all located the installation cavity is interior, the one end butt of first elastic component the last lateral wall of installation cavity, the other end butt the last side of backstop portion, the one end butt of second elastic component the lower lateral wall of installation cavity, the other end butt the downside of backstop portion.

As an alternative technical solution of the laparoscopic surgical device with trigger self-locking function, the first elastic member and the second elastic member are both compression springs.

As an alternative technical scheme of the laparoscopic surgical device with the trigger self-locking function, the shell is provided with a sliding groove, and the locking piece is slidably arranged in the sliding groove.

As an alternative technical scheme of the laparoscopic surgery device with the trigger self-locking function, the locking groove is V-shaped, and the opening direction of the locking groove is away from the trigger and forms an acute angle with the sliding direction of the locking piece.

As an alternative technical scheme of the laparoscopic surgery device with the trigger self-locking function, two locking grooves are arranged, the two locking grooves are arranged at intervals along the thickness direction of the shell, the trigger is positioned at the first locking position, the locking piece is positioned at the second locking position, and two ends of the locking pin can be respectively locked in one locking groove.

As an alternative technical solution of the laparoscopic surgical device with a trigger self-locking function, the locking member is provided with an introduction inclined plane, the introduction inclined plane is located above the locking groove, the introduction inclined plane is inclined upwards in a direction away from the trigger, and the locking pin abuts against the introduction inclined plane and enables the locking member to move to the avoiding position in the process of moving the trigger from the releasing position to the abutting position.

As an alternative solution of the laparoscopic surgical device with a trigger self-locking function, the locking member is provided with a guiding channel, the guiding channel is located below the locking groove, and the locking pin moves out of the locking member from the guiding channel during the process that the trigger moves from the abutting position to the releasing position.

As an alternative to the laparoscopic surgical device having the trigger self-locking function, the laparoscopic surgical device having the trigger self-locking function includes a third elastic member provided between the trigger and the housing for stopping the trigger at the release position.

The beneficial effects of the utility model are as follows:

the utility model provides a laparoscopic surgical device with a trigger self-locking function, which is characterized in that a locking pin is arranged on a trigger, a locking groove is arranged on a locking piece, wherein the trigger can rotate between an abutting position and a releasing position, and a first locking position of the trigger is positioned between the abutting position and the releasing position; the locking piece can slide between an initial position and an avoidance position, a second locking position of the locking piece is positioned between the initial position and the avoidance position, the locking piece moves to the second locking position in the process of moving the trigger from the abutting position to the first locking position, and the locking pin is locked at the bottom of the locking groove in the state that the trigger is positioned at the first locking position and the locking piece is positioned at the second locking position; the trigger moves from the first locking position to the abutting position, the locking pin moves out of the locking groove, and the locking piece moves to the initial position after the trigger moves from the abutting position to the releasing position. The trigger is self-locked and unlocked in the process of operating the trigger twice by means of the arrangement, so that the other hand is prevented from operating the locking assembly, the locking and unlocking processes of the trigger are simplified by the arrangement of the locking pin and the locking groove, the operation efficiency is improved, and the operation effect is improved.

Drawings

FIG. 1 is a schematic view of a laparoscopic surgical device with trigger self-locking function in accordance with an embodiment of the present utility model;

FIG. 2 is a schematic view showing the internal structure of a laparoscopic surgical device having a trigger self-locking function according to an embodiment of the present utility model;

FIG. 3 is a schematic view of a laparoscopic surgical device with trigger self-locking function in accordance with an embodiment of the present utility model with a locking pin abutting against an lead-in ramp;

FIG. 4 is an enlarged view of FIG. 3 at A;

FIG. 5 is a schematic view of the structure of the trigger according to the embodiment of the present utility model;

FIG. 6 is a schematic view of a first view of a locking member according to an embodiment of the present utility model;

fig. 7 is a schematic structural diagram of the locking member according to the second view of the embodiment of the present utility model.

In the figure:

100. a housing; 110. a stop portion; 120. a sliding groove;

200. a trigger; 210. a locking pin; 220. a rotation pin;

300. a locking member; 310. a locking groove; 311. a limiting piece; 320. an introduction slope; 330. a derivation channel; 340. a mounting cavity;

400. a first elastic member;

500. and a second elastic member.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 7, the present embodiment provides a laparoscopic surgical device having a trigger self-locking function, which includes a housing 100, a trigger 200, and a locking member 300, wherein the trigger 200 is rotatably provided to the housing 100, the trigger 200 is provided with a locking pin 210, the trigger 200 is rotatable between an abutment position and a release position, and a first locking position of the trigger 200 is located between the abutment position and the release position; the locking piece 300 is slidably arranged on the shell 100, the locking piece 300 is provided with a locking groove 310, the locking piece 300 can slide between an initial position and an avoidance position, a second locking position of the locking piece 300 is positioned between the initial position and the avoidance position, the locking piece 300 moves to the avoidance position in the process of moving the trigger 200 from the release position to the abutting position, the locking piece 300 moves to the second locking position in the process of moving the trigger 200 from the abutting position to the first locking position, and the locking pin 210 is locked at the bottom of the locking groove 310 in the state that the trigger 200 is positioned at the first locking position and the locking piece 300 is positioned at the second locking position; the lock pin 210 is moved out of the lock groove 310 during the movement of the trigger 200 from the first lock position to the abutment position, and the lock 300 is moved to the initial position after the movement of the trigger 200 from the abutment position to the release position. By means of the above arrangement, the trigger 200 is self-locked and unlocked in the course of operating the trigger 200 twice, thereby avoiding the use of the other hand to operate the locking assembly, simplifying the locking and unlocking process of the trigger 200, improving the operation efficiency, and improving the operation effect by the arrangement of the locking pin 210 and the locking groove 310.

Trigger 200 is rotatably provided to housing 100 by rotation pin 220. The casing 100 is provided with a rotating groove, the trigger 200 is fixedly connected with a rotating pin 220, and the rotating pin 220 is rotatably arranged in the rotating groove.

During surgery, trigger 200 controls the opening and closing of the jaws, wherein the jaws are closed when trigger 200 is in the first, locked position and the jaws are open when trigger 200 is in the released position. Regardless of whether the jaws are closed or opened, the motion of the lock 300 and trigger 200 is preferably smooth, avoiding severe shock to the housing 100 that could cause vibration of the housing 100 to affect the position of the surgical device and thus the surgical accuracy.

The laparoscopic surgical device with the trigger self-locking function includes a first elastic member 400 and a second elastic member 500, both of the first elastic member 400 and the second elastic member 500 are provided between the locking member 300 and the housing 100, and the first elastic member 400 and the second elastic member 500 cooperate to stop the locking member 300 at an initial position. The above arrangement makes it unnecessary to provide a stopper on the housing 100 to limit the locking member 300 located at the initial position, thereby avoiding the impact generated by the locking member 300 and the stopper moving to the initial position, avoiding the vibration of the housing 100, and improving the stability of the housing 100 during the operation. Since no stopper is provided, the locking member 300 moves from the second locking position to the initial position, and then moves to the buffer position, and finally, is stationary at the initial position under the action of the first elastic member 400 and the second elastic member 500, and the buffer position is located above the initial position.

Regarding the installation modes 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, the housing 100 is provided with a stop portion 110, the stop portion 110 is located in the installation cavity 340, the first elastic member 400 and the second elastic member 500 are both disposed in the installation cavity 340, one end of the first elastic member 400 abuts against an upper side wall of the installation cavity 340, the other end abuts against an upper side surface of the stop portion 110, one end of the second elastic member 500 abuts against a lower side wall of the installation cavity 340, and the other end abuts against a lower side surface of the stop portion 110.

Specifically, the first elastic member 400 and the second elastic member 500 are compression springs. With the above arrangement, when the locking member 300 moves from the initial position to the retracted position, the first elastic member 400 is compressed, and the second elastic member 500 is not stressed. When the locking member 300 is in the second locking position, the first elastic member 400 is compressed, and the second elastic member 500 is not stressed. When the locking member 300 is at the initial position, the first elastic member 400 is compressed, and the second elastic member 500 is compressed.

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 is provided to restrict the sliding direction of the locking member 300. The sliding groove 120 is surrounded by two parallel sliding strips protruding into the housing 100. That is, the locking member 300 is slidably disposed between the two slide bars. The sliding strip also functions as a reinforcing rib, and can reinforce the housing 100.

Considering that the locking of the trigger 200 is critical, if the trigger 200 is not moved in place, the trigger 200 is not locked by the locking member 300, and after the trigger 200 is released, the trigger 200 automatically moves to the release position, so that the problem that the jaw is reopened can occur, the hemostasis fails, further the operation cannot be continued, and the trigger 200 needs to be pulled again, so that the operation effect and efficiency are seriously affected.

Therefore, when the jaws are closed, it is necessary to clearly know that the trigger 200 has moved into place, that is, it is necessary to clearly know that the trigger 200 has moved to the first locking position, and for this reason, in this embodiment, the locking groove 310 has a V shape, and the opening direction of the locking groove 310 is away from the trigger 200 and forms an acute angle with the sliding direction of the locking member 300. The arrangement is such that when the trigger 200 is moved to the abutment position, i.e., to the entrance of the locking groove 310, at this time, the trigger 200 is slightly released, so that when the trigger 200 is moved to the first locking position, the locking member 300 is moved upward to the second locking position by the action of the first elastic member 400, and since the locking pin 210 abuts against the groove bottom of the locking groove 310 when the locking member 300 is moved to the second locking position, an impact occurs and a click sound is generated, the user clearly knows that the trigger 200 has been locked after hearing the sound, and can release the trigger 200 in a large amount. Improves the fluency and effect of the operation. In this embodiment, the opening direction of the locking groove 310 is inclined upward.

The locking piece 300 is provided with a containing groove and a limiting piece 311, the limiting piece 311 is opposite to the opening of the containing groove, the containing groove is triangular, and the containing groove and the limiting piece 311 are arranged into a V-shaped locking groove 310 through surrounding. The limiting piece 311 prevents the locking piece 300 from directly moving upwards to the initial position when the trigger 200 moves to the abutting position, and the locking pin 210 is stopped by the limiting piece 311 only enters the bottom of the locking groove 310 when the locking piece 300 moves upwards.

The locking grooves 310 are provided in two, the two locking grooves 310 are spaced apart in the thickness direction of the housing 100, and both ends of the locking pin 210 can be locked in one locking groove 310 in a state in which the trigger 200 is located at the first locking position and the locking member 300 is located at the second locking position. This arrangement allows for a more balanced, stable fit of the locking pin 210 and the locking groove 310. The thickness direction is the left-right direction.

The lock 300 is provided with an introduction slope 320 communicating with an inlet of the lock groove 310, the introduction slope 320 being located above the lock groove 310, the introduction slope 320 being inclined upward in a direction away from the trigger 200, and the lock pin 210 abutting the introduction slope 320 and moving the lock 300 to the escape position during movement of the trigger 200 from the release position to the abutment position. This arrangement makes the locking pin 210 have not only a locking function but also a function of pushing the locking member 300 to move, and is dual-purpose, simplifying the structure, and improving practicality and stability in use. The fact that the introduction slope 320 communicates with the entrance of the locking groove 310 means that the locking pin 210 may enter the locking groove 310 after passing through the introduction slope 320. In other words, the introduction slope 320 is located above the entrance of the locking groove 310, and enters the entrance of the locking groove 310 after the locking pin 210 passes over the uppermost end of the introduction slope 320.

The two introduction inclined surfaces 320 are provided, and the two introduction inclined surfaces 320 are respectively communicated with the two locking grooves 310.

The lock 300 is provided with a guide-out passage 330 communicating with the outlet of the lock groove 310, the guide-out passage 330 is located below the lock groove 310, and the lock pin 210 is moved out of the guide-out passage 330 to lock the 300 and then the lock 300 is moved to the initial position in the process of moving the trigger 200 from the abutment position to the release position. Wherein the lead-out channel 330 is inclined obliquely upward in a direction away from the trigger 200. This arrangement prevents the lock member 300 from moving from the second lock position to the initial position by sliding upward by a distance under the action of the guide-out path 330 and the lock pin 210, which is controlled by the hand, and the movement speed is slow, and when the lock pin 210 and the guide-out path 330 are disengaged, the lock member 300 moves upward by acceleration under the action of the first elastic member 400. The arrangement of the guide-out channel 330 reduces the distance of upward acceleration movement of the locking member 300, thereby reducing the speed of the locking member 300 when moving to the initial position, improving the overall smoothness and being beneficial to improving the quality of the operation; in addition, the distance between the buffer position and the initial position is shortened, so that the structure is smaller.

The two guide-out passages 330 are provided, and the two guide-out passages 330 are respectively communicated with the outlets of the two locking grooves 310. The locking pin 210 passes beyond the outlet of the locking slot 310 and then enters the lead-out channel 330.

The laparoscopic surgical device having the trigger self-locking function includes a third elastic member provided between the trigger 200 and the housing 100 for stopping the trigger 200 at the release position. The arrangement allows the trigger 200 to be automatically reset to the release position, simplifying the user's operation and improving the smoothness of the operation.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims (10)

1. A laparoscopic surgical device having a trigger self-locking function, comprising:

a housing (100);

a trigger (200), the trigger (200) being rotatably provided to the housing (100), the trigger (200) being provided with a locking pin (210), the trigger (200) being rotatable between an abutment position and a release position, a first locking position of the trigger (200) being located between the abutment position and the release position;

a locking piece (300), wherein the locking piece (300) is slidably arranged on the shell (100), a locking groove (310) is formed in the locking piece (300), the locking piece (300) can slide between an initial position and an avoidance position, a second locking position of the locking piece (300) is positioned between the initial position and the avoidance position, the locking piece (300) moves to the avoidance position in the process of moving the trigger (200) from the release position to the abutting position, the locking piece (300) moves to the second locking position in the process of moving the trigger (200) from the abutting position to the first locking position, the trigger (200) is positioned at the first locking position and the locking piece (300) is positioned at the bottom of the locking groove (310) in the state of being positioned at the second locking position, and the locking pin (210) is locked at the bottom of the locking groove (310); the locking pin (210) moves out of the locking groove (310) during movement of the trigger (200) from the first locking position to the abutment position, and the locking member (300) moves to the initial position after movement of the trigger (200) from the abutment position to the release position.

2. The laparoscopic surgical device with trigger self-locking function according to claim 1, characterized in that it comprises a first elastic member (400) and a second elastic member (500), said first elastic member (400) and said second elastic member (500) being both provided between said locking member (300) and said housing (100), said first elastic member (400) and said second elastic member (500) acting together to stop said locking member (300) in said 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 housing (100) is provided with a stop portion (110), the stop portion (110) is located in the mounting cavity (340), the first elastic member (400) and the second elastic member (500) are both located in the mounting cavity (340), one end of the first elastic member (400) is abutted against an upper side wall of the mounting cavity (340), the other end is abutted against an upper side surface of the stop portion (110), one end of the second elastic member (500) is abutted against a lower side wall of the mounting cavity (340), and the other end is abutted against a lower side surface of the stop portion (110).

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

5. Laparoscopic surgical device with trigger self-locking function according to claim 1, characterized in that the housing (100) is provided with a sliding groove (120), the locking element (300) being slidingly arranged in the sliding groove (120).

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

7. The laparoscopic surgical device with a trigger self-locking function according to claim 6, wherein two locking grooves (310) are provided, the two locking grooves (310) are provided at intervals in a thickness direction of the housing (100), and both ends of the locking pin (210) can be locked in one locking groove (310) in a state where the trigger (200) is located at the first locking position and the locking piece (300) is located at the second locking position.

8. The laparoscopic surgical device with trigger self-locking function according to claim 6, characterized in that the locking member (300) is provided with an introduction slope (320), the introduction slope (320) being located above the locking groove (310), the introduction slope (320) being inclined upward in a direction away from the trigger (200), the locking pin (210) abutting the introduction slope (320) and causing the locking member (300) to move to the escape position during the movement of the trigger (200) from the release position to the abutment position.

9. The laparoscopic surgical device with trigger self-locking function according to claim 6, characterized in that the locking member (300) is provided with a lead-out channel (330), the lead-out channel (330) being located below the locking groove (310), the locking pin (210) being moved out of the locking member (300) from the lead-out channel (330) during movement of the trigger (200) from the abutment position to the release position.

10. The laparoscopic surgical device with trigger self-locking function according to claim 1, characterized in that it comprises a third elastic member provided between the trigger (200) and the housing (100) for stopping the trigger (200) in the release position.