Multifunctional laparoscopic surgical instrument

Abstract

The present application relates to the technical field of medical apparatus and instruments, and particularly relates to a multifunctional laparoscopic surgical instrument. The multifunctional laparoscopic surgical instrument comprises a handle, a trigger, a jaw rotating mechanism, a pull rod fork, an outer cylinder, an outer cylinder rotating mechanism, a steel wire, a pull rod, a rotating pull head, a head changing nut, an H connecting piece, a front deflection piece, a rear deflection piece and a working part. The multifunctional laparoscopic surgical instrument has the working part being detachable, so that the scissors, forceps and grabbers can be conveniently replaced to adapt to the surgical needs. In addition, the working part is also bendable and rotatable, and can be bent by more than 45 degrees to the left and right, and can be rotated by more than 360 degrees at various bending angles, so that the surgical range is larger and the operation is more convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a multifunctional laparoscopic surgical instrument. BACKGROUND

[0002] Laparoscopic surgery is a surgery using laparoscopes and related instruments, several small incisions of 5-12 mm in diameter are made in different parts of the abdomen, a camera lens and various special surgical instruments are inserted through the small incisions, the images of various organs in the abdominal cavity captured by the camera inserted into the abdominal cavity are transmitted to the television screen, and the surgeon completes the surgery by observing the images and operating with various surgical instruments outside the body. In recent years, due to the laparoscopic surgery (also called minimally invasive surgery), its incision is small, the scar is small, and the recovery is fast, so it is more and more widely used.

[0003] At present, there are many instruments applied to laparoscopic surgery, but the use is relatively single, and the flexibility is limited. For example, the patent document with the application number 201010234653.8 discloses a multifunctional laparoscopic surgery bendable surgical forceps, which is mainly used for internal organ surgery of human body and belongs to the field of medical devices. The forceps head is designed to be installed with a bend-shaped joint assembly, the forceps clamps are designed with upper and lower matching non-damaging clamping teeth and arc-shaped grooves, the forceps body has an electrocoagulation hemostasis function, and the forceps rod can rotate 360 degrees and is designed with 16 positioning system points. The present application has simple and reasonable structure, good application effect, and can be used for searching, grabbing, connecting, separating, imaging and electrocoagulation hemostasis of tissues and organs in the abdominal cavity of human body, and is convenient and safe to use in surgery. It solves the defects of single application function of surgical instrument forceps in the prior art, which leads to more operation channels, more surgical procedures, and more frequent replacement of surgical instruments. However, the instrument can only be used for surgical forceps, the range of application is limited, and the bending angle is low in precision and small in bending angle due to structural limitations. SUMMARY

[0004] The purpose of the present application is to provide a multifunctional laparoscopic surgical instrument, the working part is detachable, and the scissors, forceps, and grabbers can be easily replaced to meet the needs of surgery; and the working part is also bendable and rotatable, which can be bent to the left and right by an angle of not less than 45°, and at various bending angles, the working part can also rotate by an angle of nearly 360°; so that the range of surgery is larger and the operation is more convenient.

[0005] To achieve the above purpose, the following technical solutions are adopted in the present application:

[0006] The utility model provides a multifunctional laparoscopic surgical instrument, including handle, trigger, jaw rotation mechanism, pull rod fork, outer tube, outer tube rotation mechanism, steel wire, pull rod, rotary pull head, head nut, H connecting piece, front deflector, rear deflector and work part, the handle is equipped with the mounting support for installing trigger and outer tube rotation mechanism, the pull rod fork is connected with trigger, the jaw rotation mechanism is installed on the pull rod fork, the jaw rotation mechanism is detachably connected one end of pull rod, the other end of pull rod is connected steel wire, and pull rod and steel wire are inserted in outer tube, the outer tube is detachably connected with outer tube rotation mechanism, the front deflector and rear deflector are buckled into cylindrical and are inserted in the end of outer tube, the outer tube is equipped with two spiral holes, and two spiral holes are opposite and are set up in up and down staggered mode, the front deflector and rear deflector are fixed with a guide pin respectively, and two guide pins are in two spiral holes respectively, with the rotation of outer tube, two guide pins are moved in two spiral holes respectively and drive the front deflector and rear deflector to stretch out and retract oppositely, the head nut and H connecting piece are hinged with each other and are hinged with the front deflector and rear deflector respectively, the head nut is connected rotary pull head through thread, the rotary pull head is hinged with work part, and the other end of steel wire is connected rotary pull head.

[0007] The rotary pull head includes a pull head and a pull head sleeve, one end of the pull head sleeve is provided with an external thread connected with the head nut, the pull head sleeve is hinged with the pin hole of the work part intersecting connection, the pull head is inserted into the pull head sleeve, the tail of the work part is provided with a long hole, one end of the pull head is hinged with the long holes of the two work parts through a pin shaft, and the other end of the pull head is fixedly connected with the steel wire.

[0008] The surgical instrument work part includes scissors, pliers, grabbing and other categories, and different shapes, models and specifications under each category to meet the needs of various professional operations.

[0009] The outer tube rotation mechanism includes a steering dismounting button, a steering twist and a steering sleeve, one end of the steering sleeve is fixedly connected with the outer tube, the other end of the steering sleeve is provided with a flat groove, the steering dismounting button is inserted with the steering twist, and a spring is arranged on the opposite side of the steering dismounting button, the steering dismounting button is provided with a steering sleeve insertion hole, the steering sleeve insertion hole is composed of a round hole and a flat hole, the round hole is matched with the outer diameter of the steering sleeve, and the flat hole is matched with the flat groove of the steering sleeve.

[0010] One end of the trigger is hinged with the handle, the pull rod fork is provided with two sliding guide pins which are respectively slidingly inserted with the handle, and the sliding guide pin is sleeved with a spring.

[0011] The jaw rotating mechanism comprises a pull rod locking sleeve and a pull rod locking nut, the pull rod locking sleeve is screwed with the inner thread of the pull rod locking nut through the outer thread, the pull rod locking nut is provided with a tapered center hole, the pull rod locking sleeve is fixed with an open tip, the open tip is inserted into the tapered center hole, the outer side end surface of the pull rod locking sleeve is provided with an arc clamping groove, the arc clamping groove is less than 360°, and the pull rod locking sleeve is rotationally connected with a pull rod yoke through a pin shaft, the pull rod yoke is provided with a positioning pin, and the positioning pin is abutted with and slidably connected with the arc clamping groove.

[0012] A pull rod outer sleeve is further arranged between the pull rod and the outer cylinder, one end of the pull rod outer sleeve is connected with the handle, the other end is provided with a sliding groove, and the front turning piece and the rear turning piece are slidably connected with the sliding groove.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] The working part of the multifunctional laparoscopic surgical instrument is detachable, so that the scissors, forceps, grabbers and the like can be conveniently replaced to adapt to the surgical needs and reduce the purchase cost; and the working part is also bendable and rotatable, so that the bending angles of left and right are each not less than 45°, and the working part can also rotate by nearly 360° at various bending angles; the surgical range is larger, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the overall appearance view of the present application.

[0016] Figure 2 is Figure 1 the top view of the present application.

[0017] Figure 3 is Figure 2 the A-A sectional view of the present application.

[0018] Figure 4 is Figure 1 the enlarged view of A.

[0019] Figure 5 is Figure 3 the enlarged view of B.

[0020] Figure 6 is Figure 2 the enlarged view of C.

[0021] Figure 7 is the explosion view of the present application.

[0022] Figure 8 is the left view of the front turning piece.

[0023] Figure 9 is the front view of the front turning piece.

[0024] Figure 10 is the right view of the front steering piece.

[0025] Figure 11 is the top view of the front steering piece.

[0026] Figure 12 is the left view of the rear steering piece.

[0027] Figure 13 is the front view of the rear steering piece.

[0028] Figure 14 is the right view of the rear steering piece.

[0029] Figure 15 is the top view of the rear steering piece.

[0030] Figure 16 is the structure diagram of the other side of the pull rod locking nut.

[0031] Figure 17 is the front view of the pull rod locking sleeve.

[0032] Figure 18 is the side sectional view of the pull rod locking sleeve.

[0033] Figure 19 is the structure diagram of the steering dismounting button.

[0034] In the figure: 1-handle, 2-pull rod shifting fork, 3-rotary pull head, 4-mounting support, 5-flat hole, 6-round hole, 7-pull rod locking sleeve, 8-pull rod locking nut, 9-steering sleeve, 10-steering twist, 11-steering dismounting button, 12-opening tip, 13-circular arc clamping slot, 14-internal thread, 15-sliding guide pin, 16-pull rod, 17-outer cylinder, 18-pull rod outer sleeve, 19-guide pin, 20-front steering piece, 21-rear steering piece, 22-steel wire, 23-H connecting piece, 24-turning pin shaft, 25-head changing nut, 26-working part pull head outer sleeve hinged shaft, 27-pull head, 28-pull head outer sleeve, 29-working part pull head hinged shaft, 30-working part, 31-long hole, 32-spiral hole, 33-positioning pin, 34-tapered center hole, 35-spring. DETAILED DESCRIPTION

[0035] The application will be described in detail below with reference to the embodiments, but the scope of the application is not limited to the following embodiments.

[0036] As Figures 1-19As shown, a multifunctional laparoscopic surgical instrument includes handle 1, trigger 2, jaw rotation mechanism, pull rod fork 3, outer cylinder 17, outer cylinder rotation mechanism, steel wire 22, pull rod 16, rotating pull head, head changing nut 25, H connector 23, front steering piece 20, rear steering piece 21 and working part 30, the handle 1 is provided with mounting bracket 4 for installing trigger 2 and outer cylinder rotation mechanism, the pull rod fork 3 is connected with trigger 2, the jaw rotation mechanism is installed on the pull rod fork 3, the jaw rotation mechanism is detachably connected with one end of pull rod 16, the other end of pull rod 16 is connected with steel wire 22, pull rod 16 and steel wire 22 are connected in outer cylinder 17, the outer cylinder 17 is detachably connected with outer cylinder rotation mechanism, the front steering piece 20 and the rear steering piece 21 are buckled into cylindrical shape and inserted into the end of outer cylinder 17, the outer cylinder 17 is provided with two spiral holes 32, the two spiral holes 32 are oppositely and vertically staggered, the front steering piece 20 and the rear steering piece 21 are respectively fixed with a guide pin 19, the two guide pins 19 are respectively in the two spiral holes 32, with the rotation of the outer cylinder 17, the two guide pins 19 move in the two spiral holes 32 and drive the front steering piece 20 and the rear steering piece 21 to extend and retract, the head changing nut 25 is hinged with H connector 23 and is respectively hinged with the front steering piece 20 and the rear steering piece 21, the head changing nut 25 is connected with the rotating pull head through thread, the rotating pull head is hinged with the working part 30, the other end of the steel wire 22 is connected with the rotating pull head.

[0037] The rotating pull head includes pull head 27 and pull head sleeve 28, one end of the pull head sleeve 28 is provided with external thread and is connected with the head changing nut 25, the pull head sleeve 28 is hinged with the pin hole of the cross connection of the working part 30 through working part pull head sleeve hinge shaft 26, the pull head 27 is inserted into the pull head sleeve 28, the tail of the working part 30 is provided with long hole 31, one end of the pull head 27 is hinged with the long hole 31 of the two working parts 30 through working part pull head hinge shaft 29, the other end of the pull head 27 is fixedly connected with the steel wire 22.

[0038] The working part 30 includes scissors, forceps, grabbing and other categories, and different shapes, models and specifications under each category to meet the needs of various professional operations.

[0039] The outer cylinder rotation mechanism includes steering dismounting button 11, steering twist 10 and steering sleeve 9, one end of the steering sleeve 9 is fixedly connected with the outer cylinder 17, the other end of the steering sleeve 9 is provided with a flat groove, the steering dismounting button 11 is inserted with the steering twist 10, and a spring is arranged on the opposite side of the steering dismounting button 11, the steering dismounting button 11 is provided with steering sleeve insertion hole, the steering sleeve insertion hole is composed of two parts of round hole 6 and flat hole 5, the round hole 6 matches the outer diameter of the steering sleeve 9, and the flat hole 5 matches the flat groove of the steering sleeve.

[0040] One end of the trigger 2 is hinged to the mounting bracket 4 on the handle 1, and the pull rod fork 3 is provided with two sliding guide pins 15 respectively slidingly inserted into the handle 1, and the sliding guide pins 15 are sleeved with springs 35.

[0041] The jaw rotating mechanism comprises a pull rod locking sleeve 7 and a pull rod locking nut 8, the pull rod locking sleeve 7 is screwed with the inner thread 14 of the pull rod locking nut 8 through the outer thread, the pull rod locking nut 8 is provided with a tapered center hole 34, the pull rod locking sleeve 7 is fixed with an open tip 12, the open tip 12 is inserted into the tapered center hole 34, the outer side end surface of the pull rod locking sleeve 7 is provided with a circular arc clamping groove 13, the circular arc clamping groove 13 is less than 360°, and the pull rod locking sleeve 7 is rotationally connected with the pull rod fork 3 through a pin shaft, the pull rod fork 3 is provided with a positioning pin 33, the positioning pin 33 is abutted with and slidingly connected with the circular arc clamping groove 13.

[0042] A pull rod outer sleeve 18 is further provided between the pull rod 16 and the outer cylinder 17, one end of the pull rod outer sleeve 18 is connected with the handle 1, and the other end is provided with a sliding groove, the front turning piece 20 and the rear turning piece 21 are slidingly connected with the sliding groove.

[0043] The M-shaped mounting bracket 4 is fixed on the handle 1 through bolts, the turning knob 10 is arranged in the first groove of the M-shaped mounting bracket 4, the turning sleeve 9 is rotatably inserted into the bracket on the front side of the first groove and penetrates into the turning knob 10, and is also penetrated into the circular hole 6 of the turning dismounting button 11, when the turning dismounting button 11 is popped up by the spring, the flat groove of the turning sleeve 9 is just clamped in the flat hole 5, so that the outer cylinder 17 can rotate with the turning knob 10, and the dismounting of the outer cylinder 17 can be realized by pressing the turning dismounting button 11. One end of the pull rod outer sleeve 18 penetrates through the turning sleeve 9 and is fixed on the bracket on the rear side of the first groove.

[0044] When the turning knob 10 is rotated, the outer cylinder 17 also rotates, at this time, the guide pins 19 on the front turning piece 20 and the rear turning piece 21 move upward along the spiral hole 32 and downward along the spiral hole 32 respectively, so that the front turning piece 20 and the rear turning piece 21 are extended and retracted respectively, and the working part 30 can be bent at the hinged part of the head nut 25, the H-shaped connecting piece 23, the front turning piece 20 and the rear turning piece 21, because the bending angle of the working part is controlled by the rotation angle of the turning knob 10, the control precision is also relatively high.

[0045] The upper end of the trigger 2 is hinged to the bracket on the rear side of the first groove, and pulling the trigger 2 can drive the jaw rotating mechanism to displace rearward, the two sliding guide pins 15 are fixed on the rear side of the pull rod fork 3 one above the other, and are slidingly inserted into the handle 1, the sliding guide pins 15 are sleeved with springs 35, and the springs 35 provide the pull rod fork 3 with a resilient force to enable the pull rod fork 3 to reset.

[0046] The upper portion of the pull rod fork 3 is provided with a U-shaped groove, and the jaw rotating mechanism is arranged in the U-shaped groove. The pull rod locking sleeve 7 is rotatably connected with the pull rod fork 3 through a pin shaft. The pull rod locking sleeve 7 is screwed with the inner thread 14 of the pull rod locking nut 8 through external threads. When the pull rod locking nut 8 is rotated, the pull rod locking sleeve 7 is screwed into the pull rod locking nut 8. The pull rod 16 passes through the pull rod sleeve 18, and the end thereof is inserted into the open tip 12 through the conical center hole 34. When the pull rod locking sleeve 7 is rotated to the circular arc clamping groove 13 clamped on the positioning pin 33, the pull rod locking sleeve 7 is no longer rotated. When the pull rod locking nut 8 is continuously screwed, the pull rod locking sleeve 7 and the pull rod locking nut 8 are locked. At this time, due to the action of the conical center hole 34 of the pull rod locking nut 8, the open tip 12 clamps and fixes the pull rod 16. When the pull rod locking nut 8 is reversely rotated, the pull rod 16 is rotated together. When the circular arc clamping groove 13 is rotated to the other end and clamped on the positioning pin 33, the pull rod locking sleeve 7 and the pull rod locking nut 8 are unlocked and loosened by continuously rotating the pull rod locking nut 8. At this time, the open tip 12 is away from the conical center hole 34 and releases the pull rod 16, so that the pull rod 16 and the working part 30 can be replaced.

[0047] When the pull rod locking sleeve 7 and the pull rod locking nut 8 are locked, the pull rod 16, the steel wire 22 and the working part 30 are locked by the jaw rotating mechanism. When the jaw rotating mechanism is rotated, the working part 30 is also rotated with the jaw rotating mechanism because the rotating pull head 28 and the head nut 25 are connected through threads. The working part 30 is rotated by nearly 360° (the circular arc clamping groove 13 is nearly 360° circle).

[0048] Pulling the trigger 2 can drive the jaw rotating mechanism to move backward, so as to pull the pull rod 16 and the steel wire 22. The steel wire 22 drives the pull head 27 to pull the opening and closing action of the cross-arranged working part 30.

Claims

1. A multifunctional laparoscopic working part, characterized in that: The system includes a handle, trigger, jaw rotation mechanism, pull rod fork, outer cylinder, outer cylinder rotation mechanism, steel wire, pull rod, rotating pull head, head-changing nut, H-connector, front steering plate, rear steering plate, and working part. The handle has a mounting bracket for mounting the trigger and outer cylinder rotation mechanism. The pull rod fork is connected to the trigger. The jaw rotation mechanism is mounted on the pull rod fork. The jaw rotation mechanism is detachably connected to one end of the pull rod, and the other end of the pull rod is connected to the steel wire. The pull rod and steel wire pass through the outer cylinder. The outer cylinder is detachably connected to the outer cylinder rotation mechanism. The front and rear steering plates are interlocked to form a circle. A cylindrical insert is attached to the end of the outer cylinder. The outer cylinder has two spiral holes, which are opposite to each other and staggered vertically. The front steering plate and the rear steering plate are each fixed with a guide pin. The two guide pins are respectively in the two spiral holes. As the outer cylinder rotates, the two guide pins move in the two spiral holes and drive the front steering plate and the rear steering plate to extend and retract relative to each other. The head-changing nut is hinged to the H-connector and to the front steering plate and the rear steering plate respectively. The head-changing nut is connected to the rotating pull head by a thread. The rotating pull head is hinged to the working part. The other end of the steel wire is connected to the rotating pull head. The rotating zipper head includes a zipper head and a zipper head sleeve. One end of the zipper head sleeve is provided with an external thread and connected to a zipper head nut. The zipper head sleeve is hinged to the working part through a pin hole. The zipper head is inserted into the zipper head sleeve. The tail of the working part is provided with an elongated hole. One end of the zipper head is hinged to the elongated holes of the two working parts through a pin shaft. The other end of the zipper head is fixedly connected to a steel wire. The outer cylinder rotation mechanism includes a steering disassembly button, a steering knob, and a steering sleeve. One end of the steering sleeve is fixedly connected to the outer cylinder, and the other end of the steering sleeve is provided with a flat groove. The steering disassembly button is inserted into the steering knob, and a spring is provided on the opposite side of the steering disassembly button. The steering disassembly button is provided with a steering sleeve insertion hole, which consists of two parts: a round hole and a flat hole. The round hole matches the outer diameter of the steering sleeve, and the flat hole matches the flat groove of the steering sleeve.

2. The multifunctional laparoscopic working unit according to claim 1, characterized in that: The working part includes shears, pliers, or claws.

3. The multifunctional laparoscopic working unit according to claim 1, characterized in that: One end of the trigger is hinged to the handle, and the lever fork is provided with two sliding guide pins that are slidably inserted into the handle, and the sliding guide pins are sleeved with springs.

4. A multifunctional laparoscopic working unit according to claim 1 or 3, characterized in that: The jaw rotation mechanism includes a pull rod locking sleeve and a pull rod locking nut. The pull rod locking sleeve is screwed to the pull rod locking nut via an external thread. The pull rod locking nut has a tapered central hole. The pull rod locking sleeve has an open tip fixed to it, which is inserted into the tapered central hole. The outer end face of the pull rod locking sleeve has an arc groove with a radius less than 360°. The pull rod locking sleeve is rotatably connected to the pull rod fork via a pin. The pull rod fork has a positioning pin, which engages with and slides in the arc groove.

5. The multifunctional laparoscopic working part according to claim 1, characterized in that: A pull rod sleeve is provided between the pull rod and the outer cylinder. One end of the pull rod sleeve is connected to the handle, and the other end is provided with a sliding groove. The front steering plate and the rear steering plate are slidably connected to the sliding groove.

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