CN216455195U - Laparoscopic surgical instrument - Google Patents

Abstract

The utility model relates to a laparoscopic surgical instrument which comprises a gun handle, a gun body and a shifting fork, wherein the gun body is arranged on the top of the gun handle, the gun body is of a frame-shaped structure, a sliding cylinder is slidably arranged on the front wall of the gun body in a penetrating manner, a plurality of first pin shafts are arranged at intervals on the front end of the sliding cylinder, a second pin shaft is oppositely arranged on the outer wall of the rear end of the sliding cylinder, a fixed rod is slidably arranged in the sliding cylinder, the end part of the fixed rod extends out of the sliding cylinder and is fixedly connected with the rear wall of the gun body, a plurality of jaws are hinged on the front end of the fixed rod at intervals, first strip holes are arranged on the jaws, the first pin shafts are movably arranged in the first strip holes, the lower part of the shifting fork is hinged with the lower wall of the gun body, a ring is arranged at the bottom of the shifting fork, second strip holes are oppositely arranged on two side walls of the upper part of the shifting fork, and the second pin shafts are movably arranged in the second strip holes. The problems that the grasping forceps in the prior art are inconvenient to use and operate, poor in use comfort, high in operation difficulty, difficult to position quickly and accurately according to the grasping piece and the like are effectively solved.

Description

Laparoscopic surgical instrument

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a laparoscopic surgical instrument.

Background

The laparoscopic surgery is a newly developed minimally invasive surgery, is widely popularized due to small wound and quick recovery, is commonly used for surgical treatment such as cholecystectomy and abdominal tumor excision, and needs a large amount of medical instruments such as scalpels and grasping forceps during the laparoscopic surgery. The clamp is mainly used for clamping pathological changes such as gallbladder and tumor and the like so as to facilitate excision operation and taking out pathological changes from a body after excision.

At present, the nipper structure that adopts among the prior art is the crossbar structure of scissors form usually, is articulated each other through two straight-bars, and the one end of straight-bar is equipped with the ring, and its other one end is equipped with the clamping part, and when the operation, the operator utilizes thumb and forefinger to stretch into two rings respectively, drives two clamping parts of the other end through two rings and opens and shuts and carry out the centre gripping, but the problem that exists among the prior art is: because the finger ring is controlled by the two fingers to grasp, the use comfort is poor, the operation is inconvenient, the shaking is easy to generate in the operation process, in addition, the grasping forceps are not convenient to swing according to the pathological change part through the two fingers to adjust the grasping position, the operation difficulty is large, and the quick and accurate positioning is not easy to realize.

SUMMERY OF THE UTILITY MODEL

The utility model provides a laparoscopic surgical instrument to solve the technical problem in the above-mentioned back-shadow technology.

The technical scheme adopted by the utility model is as follows:

the utility model provides a laparoscopic surgery apparatus, includes stock, body of a gun and shift fork, the body of a gun is located on the stock top, the body of a gun is the frame-shaped structure, slide on the body of a gun antetheca and wear to be equipped with the slide cartridge, slide cartridge front end interval is equipped with a plurality of first round pin axles, the outer wall of slide cartridge rear end is equipped with the second round pin axle relatively, it is equipped with the dead lever to slide in the slide cartridge, the dead lever tip wear out the slide cartridge outside and with body of a gun rear wall fixed connection, the dead lever front end interval articulates there is a plurality of claws, be equipped with first rectangular hole on the claw, first round pin axle activity is located first rectangular downthehole, the shift fork lower part with the stock lower wall is articulated, the shift fork bottom is equipped with the ring, be equipped with second rectangular hole on the both sides wall on shift fork upper portion relatively, second round pin axle activity is located in the second rectangular hole.

Further, still include locking mechanism, locking mechanism is including locating square spout on the top in the body of a gun with locate rack on the slide cartridge, the screw rod is worn to be equipped with in the rotation of square spout top, the screw rod top is equipped with the knob, it is equipped with square sliding sleeve to slide in the square spout, square sliding sleeve threaded sleeve is located on the screw rod, square sliding sleeve bottom rotate be equipped with rack toothing's one-way gear.

Furthermore, the bottom of the square sliding sleeve is provided with a U-shaped frame, a supporting shaft is fixedly arranged on the U-shaped frame in a penetrating mode, and the one-way gear is arranged on the supporting shaft.

Furthermore, the gun body bottom is equipped with dodges the mouth, dodge the intraoral third round pin axle that is equipped with, the shift fork lower part passes dodge the mouth and with third round pin axle rotates and is connected.

Furthermore, the number of the clamp claws and the number of the first pin shafts are three, the clamp claws are hinged to the front end face of the fixed rod at equal intervals along the circumferential direction of the fixed rod, and the first pin shafts are arranged on the inner wall of the front end of the sliding cylinder at equal intervals along the circumferential direction of the sliding cylinder.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model provides a laparoscopic surgery instrument which accords with the ergonomic design, wherein a gun handle is held by a middle finger, a ring finger, a little finger, a palm and a mother finger during operation, meanwhile, a forefinger penetrates into a finger ring, when the finger ring is buckled, the finger ring drives a sliding cylinder to slide on the front wall of a gun body through a shifting fork, the sliding cylinder drives a first pin shaft to slide in a first long hole, so that a forceps jaw is folded for grabbing, the operation is simple and convenient, the use is comfortable and high, the shake in the operation process can be effectively reduced, the palm force is fully utilized for holding to adjust the grabbing direction, the operation difficulty in the grabbing process is reduced, the positioning can be quickly and accurately carried out according to a diseased part, the operation time is favorably shortened, and the injury of the operation to the body is reduced.

2. When the finger ring is buckled to clamp the lesion part, the sliding barrel is locked in real time by the locking mechanism, so that the clamping effect is ensured, the operation is convenient, force is not required to be applied continuously after the clamping is finished, and the operation burden is reduced.

3. When grabbing, the sliding barrel is utilized to drive the clamp claws to be folded in for clamping, the required operation space is small, the clamp is convenient to use in a narrow space, damage to peripheral tissues caused by collision in the operation process is avoided, and the practicability is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a view partially in the direction F of FIG. 3;

FIG. 5 is a schematic view of the internal structure of the present invention;

FIG. 6 is an enlarged view of FIG. 5 at C;

FIG. 7 is an enlarged view of D in FIG. 5;

FIG. 8 is a schematic view of the matching structure of the shift fork and the slide cylinder in the present invention;

fig. 9 is a schematic view of a matching structure of the locking mechanism of the utility model;

in the figure: 1. a gun handle; 2. a gun body; 3. a slide cylinder; 4. a ring; 5. a one-way gear; 6. a screw; 7. a knob; 8. a square sliding sleeve; 9. a U-shaped frame; 10. a support shaft; 11. a rack; 12. a second elongated hole; 13. fixing the rod; 14. a shifting fork; 15. a third pin shaft; 16. a second pin shaft; 17. a jaw; 18. a first elongated hole; 19. a square chute; 20. avoiding the mouth; 21. a first pin.

Detailed Description

In order to better understand the technical content of the utility model, specific embodiments are provided below, and the utility model is further described with reference to the accompanying drawings.

Referring to fig. 1 to 9, the present invention provides a laparoscopic surgical instrument, comprising a gun handle 1, a gun body 2 and a shifting fork 14, wherein the gun body 2 is disposed on the top of the gun handle 1, the gun body 2 and the gun handle 1 are both frame-shaped structures, which can effectively reduce the weight and facilitate the use, wherein the gun body 2 is a square structure, the gun handle 1 is a round structure to fit the hand shape, which is convenient to hold, a slide cylinder 3 is slidably inserted on the front wall of the gun body 2, a plurality of first pin shafts 21 are disposed on the inner wall of the front end of the slide cylinder 3 at intervals, a second pin shaft 16 is disposed on the outer wall of the rear end of the slide cylinder 3, a fixing rod 13 is slidably disposed in the slide cylinder 3, the rear end of the fixing rod 13 extends out of the slide cylinder 3 and is fixedly connected with the rear wall of the gun body 2, a plurality of jaws 17 are hinged to the front end of the fixing rod 13, the jaws 17 are curved, a plurality of recesses are disposed on the inner side surfaces of the jaws 17, which is beneficial to improve the clamping effect, the grasping portion of the jaws 17 is disposed outside the slide cylinder 3, first strip holes 18 are formed in the rear side of the jaw 17, each first pin 21 is sequentially and movably arranged in each first strip hole 18, the lower portion of the shifting fork 14 is hinged to the lower wall of the gun body 2, a ring 4 is arranged at the bottom of the shifting fork 14, the ring 4 is located below the gun body 2, second strip holes 12 are oppositely formed in two side walls of the upper portion of the shifting fork 14, and the second pin 16 is movably arranged in the second strip holes 12.

In the grabbing process, the middle finger, the ring finger, the little finger, the palm and the mother finger are held to hold the gun handle 1, the index finger penetrates into the ring 4, the ergonomic design is met, the holding effect is improved, the ring 4 is driven by the index finger to swing back and forth, the ring 4 drives the shifting fork 14 to swing on the lower wall of the gun body 2, the second pin shaft 16 can slide in the second long-strip hole 12, so that the shifting fork 14 drives the sliding barrel 3 to slide on the front wall of the gun body 2 through the second pin shaft 16 and the second long-strip hole 12, the sliding barrel 3 drives the first pin shaft 21 to slide in the first long-strip hole 18 on the rear side of the clamping jaws 17, the plurality of clamping jaws 17 are folded or unfolded simultaneously, the grabbing and loosening operation is realized, wherein when the ring is buckled backwards to enable the sliding barrel 3 to slide forwards on the gun body 2, the grabbing operation is simple and convenient to use, the use is comfortable and high, and the operation in the process can be effectively reduced, and the palm strength is fully utilized to hold and further adjust the grabbing position, the operation difficulty in the grabbing process is reduced, the robot can be quickly and accurately positioned and grabbed according to the pathological change part, the operation time is favorably shortened, and the injury of the operation to the body is reduced.

Specifically, still include locking mechanism, locking mechanism is including locating square spout 19 on the body of a gun 2 interior top and locating rack 11 on the slide cartridge 3, screw rod 6 is worn to be equipped with in the rotation of square spout 19 top, 6 tops of screw rod are equipped with knob 7, it is equipped with square sliding sleeve 8 to slide in the square spout 19, 8 threaded sleeve of square sliding sleeve locate on the screw rod 6, 8 bottoms of square sliding sleeve rotate be equipped with rack 11 meshed one-way gear 5, one-way gear 5 can be along the automatic rotation of single direction (clockwise in figure 2 and figure 6), its another rotation direction is restricted. When the sliding barrel 3 slides forwards on the front wall of the gun body 2, the sliding barrel 3 drives the rack 11 to move forwards, the rack 11 drives the one-way gear 5 to rotate on the bottom of the square sliding sleeve 8 for real-time locking, and when the sliding barrel 3 drives the clamp claws 17 to fold and clamp a lesion part, the sliding barrel 3 and the gun body 2 are automatically locked, so that an operator does not need to continuously apply force, the clamping effect is ensured, the operation is convenient, and the operation burden is reduced; when the locking needs to be removed, the knob 7 can be rotated by the aid of the rotary knob to drive the screw rod 6 to rotate, the screw rod 6 drives the square sliding sleeve 8 to slide upwards in the square sliding groove 19 through threads, the square sliding sleeve 8 drives the one-way gear 5 to leave the rack 11, locking between the sliding barrel 3 and the gun body 2 is removed, unlocking operation is convenient, two operation modes of automatic locking and manual clamping can be selected according to use environments, and applicability is improved.

Specifically, 8 bottoms of square sliding sleeve are equipped with U-shaped frame 9, and fixed wear to be equipped with back shaft 10 on the U-shaped frame 9, and one-way gear 5 locates on back shaft 10, and rack 11 drives one-way gear 5 and locks on back shaft 10 one-way rotation, and one-way gear 5 adopts miniature one-way gear 5, and in addition, also can play the effect of one-way locking through miniature one-way bearing installation ordinary gear on back shaft 10, the cooperation that utilizes miniature one-way bearing and ordinary gear.

Specifically, the bottom of the gun body 2 is provided with an avoiding opening 20, a third pin shaft 15 is arranged in the avoiding opening 20, the lower part of the shifting fork 14 penetrates through the avoiding opening 20 and is rotatably connected with the third pin shaft 15, so that the shifting fork 14 swings on the third pin shaft 15, the integral arrangement is facilitated, the finger ring 4 is aligned with the gun handle 1, the holding by a user is facilitated, and the use comfort is improved.

Specifically, the number of the clamp claws 17 and the number of the first pin shafts 21 are three, the clamp claws 17 are hinged to the front end face of the fixed rod 13 at equal intervals along the circumferential direction of the fixed rod 13, and the first pin shafts 21 are arranged on the inner wall of the front end of the sliding cylinder 3 at equal intervals along the circumferential direction of the sliding cylinder 3. The clamp claws 17 are folded in from multiple directions to be clamped, the grabbing effect is improved, and grabbing of the clamp claws in the taking-out process is avoided, and the clamp claws fall off from the side edges.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A laparoscopic surgical instrument, characterized by: including stock, body of a gun and shift fork, the body of a gun is located on the stock top, the body of a gun is the frame structure, slide on the body of a gun antetheca and wear to be equipped with the slide cartridge, slide cartridge front end interval is equipped with a plurality of first round pin axles, the outer wall of slide cartridge rear end is equipped with the second round pin axle relatively, it is equipped with the dead lever to slide in the slide cartridge, the dead lever tip is worn out the slide cartridge outside and with body of a gun rear wall fixed connection, the dead lever front end interval articulates there is a plurality of claws, be equipped with first rectangular hole on the claw, first round pin axle activity is located first rectangular downthehole, the shift fork lower part with the body of a gun lower wall is articulated, the shift fork bottom is equipped with the ring, be equipped with second rectangular hole on the both sides wall on shift fork upper portion relatively, second round pin axle activity is located the rectangular downthehole of second.

2. The laparoscopic surgical instrument of claim 1, wherein: still include locking mechanism, locking mechanism is including locating square spout on the top in the body of a gun and locating rack on the slide cartridge, the screw rod is worn to be equipped with in the rotation of square spout top, the screw rod top is equipped with the knob, it is equipped with square sliding sleeve to slide in the square spout, square sliding sleeve threaded bush is located on the screw rod, square sliding sleeve bottom be equipped with rack toothing's one-way gear.

3. The laparoscopic surgical instrument of claim 2, wherein: the square sliding sleeve bottom is equipped with the U-shaped frame, the back shaft is fixed to wear to be equipped with on the U-shaped frame, one-way gear locates on the back shaft.

4. The laparoscopic surgical instrument of claim 1, wherein: the gun body bottom is equipped with dodges the mouth, dodge the mouth and be equipped with the third round pin axle in, the shift fork lower part passes dodge the mouth and with the third round pin axle rotates to be connected.

5. The laparoscopic surgical instrument of claim 1, wherein: the number of the clamp claws and the number of the first pin shafts are three, the clamp claws are hinged to the front end face of the fixed rod at equal intervals along the circumferential direction of the fixed rod, and the first pin shafts are arranged on the inner wall of the front end of the sliding cylinder at equal intervals along the circumferential direction of the sliding cylinder.

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