Multifunctional endoscopic surgical instrument

Abstract

The invention relates to the technical field of medical instruments, and discloses a multifunctional endoscopic surgical instrument which comprises a shell, an intubation tube is installed at the tail end of the shell, an ejection sliding groove is formed in the side wall of the shell, a first fixing groove and a second fixing groove are formed in the two ends of the ejection sliding groove, and a puncture sliding groove is formed in the tail end of the ejection sliding groove. A first clamping rod is slidably arranged in the ejection sliding groove, a hollow steel wire is installed at the tail end of the first clamping rod and slides in the insertion pipe, an opening and closing sliding groove is formed in the side wall of the shell, a third fixing groove is formed in the side wall of the opening and closing sliding groove, a second clamping rod is slidably arranged in the opening and closing sliding groove, and a main steel wire is installed at the tail end of the second clamping rod and arranged in the insertion pipe. By adjusting and controlling the main steel wire and the hollow steel wire, the functions of three endoscopic surgical instruments can be achieved, the ideal functions can be achieved without frequently replacing the instruments in the one-time esd treatment process, the surgical time is shortened, and meanwhile, a proper mode can be more conveniently adopted for hemostasis operation when needed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical instruments, and in particular, relates to a multifunctional endoscopic surgical instrument. Background Art

[0002] Endoscopic submucosal dissection surgery requires the use of special endoscopic instruments to lift the lesion tissue and separate it from the muscle layer by injecting liquid (such as saline, glycerol fructose, etc.) into the submucosal layer of the lesion. Then, a high-frequency electric knife and other instruments are used to make a circular incision along the edge of the lesion, and then the lesion tissue is gradually peeled off to achieve the purpose of complete removal of the lesion.

[0003] During endoscopic submucosal dissection surgery, injection needles, throwing knives, electrocoagulation forceps and other tools are needed. However, each time the tool is changed, the original instrument must be removed through the forceps channel and a new instrument must be inserted, which affects the operation time, delays hemostasis, and increases the risk of infection.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the technical problem that during endoscopic submucosal dissection surgery, it is necessary to use tools such as injection needles, knifes, IT knives, and electrocoagulation forceps, but each time the tool is replaced, the original instrument needs to be taken out through the forceps channel and then a new instrument needs to be inserted, which affects the operation time, delays the timing of hemostasis, increases the risk of infection, etc., the basic concept of the technical solution adopted by the present invention is:

[0006] A multifunctional endoscopic surgical instrument comprises a shell, a cannula is installed at the end of the shell, an ejection chute is provided on the side wall of the shell, a first fixed groove and a second fixed groove are provided at both ends of the ejection chute, a puncture chute is provided at the end of the ejection chute, a first clamping rod is slidably provided inside the ejection chute, an opening and closing chute is provided on the side wall of the shell, a third fixed groove is provided on the side wall of the opening and closing chute, a second clamping rod is slidably installed inside the opening and closing chute, a main steel wire is installed at the end of the second clamping rod, and the main steel wire is slidably provided inside the cannula;

[0007] An infusion tube is movably connected inside the cannula, a needle tube is installed at the end of the infusion tube, an electric cutting knife head is installed on the needle tube, an electric coagulation forceps body is rotatably installed at the end of the cannula, an inner groove is provided on the inner side of the jaws of the electric coagulation forceps body, a notch is left in the center after the electric coagulation forceps body is closed, and the notch is adapted to the size of the electric cutting knife head, an auxiliary steel wire is installed on the two pressure arms of the electric coagulation forceps body, the end of the auxiliary steel wire is connected to the main steel wire, and the end of the first clamping rod is scraped and fixed to the side wall of the infusion tube.

[0008] As a preferred embodiment of the present invention, the shell is connected to the internal chamber of the cannula, a protrusion is installed on the outside of the shell, an infusion tube is installed through the protrusion and the side wall of the shell, the infusion tube is located in the internal chamber of the shell, and ceramic is installed at the end of the cannula.

[0009] As a preferred embodiment of the present invention, a pair of guide covers are installed on the side wall of the cannula, and an inner cavity is formed between the interior of each guide cover and the inner wall of the cannula, and a main steel wire and a hollow steel wire are slidably arranged in the two inner cavities respectively, and the two inner cavities are respectively connected to the ejection slide groove and the opening and closing slide groove.

[0010] As a preferred embodiment of the present invention, the main steel wire is formed by spirally winding two auxiliary steel wires.

[0011] As a preferred embodiment of the present invention, a pair of auxiliary steel wires are movably installed through the ceramic outer wall.

[0012] As a preferred embodiment of the present invention, a support frame is installed on the ceramic side wall, and the support frame is interconnected with the rotation center of the electrocoagulation forceps body. A pair of transverse V-shaped frames are installed inside the support frame, and the space formed inside the pair of transverse V-shaped frames is larger than the size of the needle tube and smaller than the size of the infusion tube.

[0013] As a preferred embodiment of the present invention, saw teeth are arranged inside the jaws of the electrocoagulation forceps body, and an insulating layer is arranged outside the jaws of the electrocoagulation forceps body.

[0014] As a preferred embodiment of the present invention, the electrosurgical cutting blade head is in a flat cylindrical shape, and an injection hole is provided on the electrosurgical cutting blade head, and the injection hole is fixed on the outside of the needle tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] By adjusting and controlling the main steel wire and the hollow steel wire, the functions of three endoscopic surgical instruments can be achieved. During an ESD treatment, there is no need to frequently replace instruments to achieve the ideal functional effect, reducing the operation time. At the same time, when necessary, the appropriate mode can be used more conveniently for hemostasis operations.

[0017] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In the attached picture:

[0019] Figure 1 A schematic diagram of the three-dimensional structure of a multifunctional endoscopic surgical instrument Figure 1 ;

[0020] Figure 2 It is a partial enlarged view of a multifunctional endoscopic surgical instrument;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a multifunctional endoscopic surgical instrument Figure 2 ;

[0022] Figure 4 It is a partial cross-sectional view of a multifunctional endoscopic surgical instrument;

[0023] Figure 5 The present invention is a planar cross-sectional view of the cannula end of a multifunctional endoscopic surgical instrument.

[0024] In the figure: 1. shell; 11. protrusion; 12. ejection slot; 121. first fixed slot; 122. second fixed slot; 123. puncture slot; 124. first clamping rod; 13. opening and closing slot; 131. third fixed slot; 132. second clamping rod; 2. cannula; 21. ceramic; 22. guide cover; 221. inner cavity; 3. infusion tube; 31. needle tube; 4. electrocoagulation forceps body; 41. inner groove; 42. insulating layer; 43. support frame; 431. transverse V-shaped frame; 5. main steel wire; 51. auxiliary steel wire; 7. electric cutting head; 71. injection hole. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0026] like Figures 1 to 5 As shown, a multifunctional endoscopic surgical instrument comprises a shell 1, a cannula 2 is installed at the end of the shell 1, an ejection chute 12 is provided on the side wall of the shell 1, a first fixed groove 121 and a second fixed groove 122 are provided at both ends of the ejection chute 12, a puncture chute 123 is provided at the end of the ejection chute 12, a first clamping rod 124 is slidably provided inside the ejection chute 12, an opening and closing chute 13 is provided on the side wall of the shell 1, a third fixed groove 131 is provided on the side wall of the opening and closing chute 13, a second clamping rod 132 is slidably installed inside the opening and closing chute 13, a main steel wire 5 is installed at the end of the second clamping rod 132, and the main steel wire 5 is slidably provided inside the cannula 2;

[0027] An infusion tube 3 is movably connected inside the cannula 2, and a needle tube 31 is installed at the end of the infusion tube 3. The end of the first clamping rod 124 is fixed to the side wall of the infusion tube 3, which is used to pull the infusion tube 3 up and down. An electric cutting knife head 7 is installed on the needle tube 31. An electric coagulation forceps body 4 is rotatably installed at the end of the cannula 2. An inner groove 41 is provided on the inner side of the jaws of the electric coagulation forceps body 4. A gap is left in the center after the electric coagulation forceps body 4 is closed, and the gap is adapted to the size of the electric cutting knife head 7. A secondary steel wire 51 is installed on the two pressure arms of the electric coagulation forceps body 4, and the ends of the secondary steel wire 51 are connected to the main steel wire 5.

[0028] The operator can pull the first clamping rod 124, and the first clamping rod 124 can slide on the ejection slide groove 12, thereby driving the infusion tube 3, the needle tube 31 and the electric cutting knife head 7 to move to a specified position, and the first clamping rod 124 can be moved to the first fixed groove 121 and the second fixed groove 122, and then the position of the first clamping rod 124 can be limited and located.

[0029] The operator can also pull the second clamping rod 132, at which time the second clamping rod 132 slides on the opening and closing slide groove 13, and the main steel wire 5 at the end of the second clamping rod 132 slides, and the main steel wire 5 drives the two auxiliary steel wires 51 to move, and the auxiliary steel wires 51 can pull the electrocoagulation forceps body 4 to perform opening and closing operations, thereby achieving different states, and the third fixed groove 131 can limit and fix the position of the second clamping rod 132.

[0030] By pulling the first clamping rod 124 and the second clamping rod 132 and cooperating with each other, different operation modes can be achieved, which are suitable for use in different situations.

[0031] like Figures 1 to 5 As shown, in a specific embodiment, the shell 1 and the internal chamber of the cannula 2 are interconnected, a protrusion 11 is installed on the outside of the shell 1, the protrusion 11 is convenient for the operator to take the shell 1, and the shell 1 can protect the infusion tube 3, the infusion tube 3 is installed through the protrusion 11 and the side wall of the shell 1, the infusion tube 3 is located in the internal chamber of the shell 1, and a ceramic 21 is installed at the end of the cannula 2, and the ceramic 21 mainly serves the purpose of insulation.

[0032] like Figures 1 to 5 As shown, further, a pair of guide covers 22 are installed on the side wall of the cannula 2, and an inner cavity 221 is formed between the interior of each guide cover 22 and the inner wall of the cannula 2. The main steel wires 5 are slidably arranged inside the two inner cavities 221, wherein the two inner cavities 221 can protect the main steel wires 5 and separate them from the infusion tube 3, and the two inner cavities 221 are respectively interconnected with the ejection chute 12 and the opening and closing chute 13, so as to facilitate the movement of the first clamping rod and the second clamping rod.

[0033] like Figures 1 to 5As shown, the main steel wire 5 is formed by spirally winding two auxiliary steel wires 51, which makes the manufacturing easier.

[0034] like Figures 1 to 5 As shown, in a specific embodiment, a pair of auxiliary steel wires 51 are movably installed through the outer wall of the ceramic 21 .

[0035] like Figures 1 to 5 As shown, further, a support frame 43 is installed on the side wall of the ceramic 21, and the support frame 43 is interconnected with the rotation center of the electrocoagulation forceps body 4, and a pair of transverse V-shaped frames 431 are installed inside the support frame 43. The space formed inside the pair of transverse V-shaped frames 431 is larger than the size of the needle tube 31 and smaller than the size of the infusion tube 3. The transverse V-shaped frame 431 can be used to prevent the needle tube 31 from being withdrawn too much, and the transverse V-shaped frame 431 also serves the purpose of support.

[0036] like Figures 1 to 5 As shown, the inner side of the jaws of the electrocoagulation forceps body 4 is provided with serrations, which makes the electrocoagulation operation more convenient. The outer side of the jaws of the electrocoagulation forceps body 4 is provided with an insulating layer 42, which has an insulating effect.

[0037] like Figures 1 to 5 As shown, in a specific embodiment, the electrocutting blade head 7 is in a flat cylindrical shape, and an injection hole 71 is provided on the electrocutting blade head 7 , so that the electrocutting blade head 7 can be conveniently installed on the needle tube 31 through the injection hole 71 .

[0038] The implementation principle of a multifunctional endoscopic surgical instrument of this embodiment is as follows:

[0039] When the electrocoagulation forceps mode is needed, the operator pulls the first clamp rod 124, the first clamp rod 124 slides on the ejection slot 12, and the first clamp rod 124 rotates to the first fixed slot 121. At this time, the first clamp rod 124 pulls the infusion tube 3, the needle tube 31 and the electrocuting head 7 to move and retract, so that the electrocuting head 7 is placed in the notch, which plays a protective role, and the needle tube 31 is located in the inner groove 41 at this time, which also plays a protective role. Then the operator slides the second clamp rod 132, and the second clamp rod 132 slides on the opening and closing slot 13, and the main steel wire 5 at the end of the second clamp rod 132 slides, and the main steel wire 5 drives the two auxiliary steel wires 51 to move, and the auxiliary steel wires 51 can pull the electrocoagulation forceps body 4 to open and close the operation, and the electrocoagulation operation can be performed when the power is connected.

[0040] When the knife-dropping mode is needed, the operator slides the second clamping rod 132 and moves the second clamping rod 132 to the bottom of the opening and closing slide slot 13, and then the jaws of the electrocoagulation forceps body 4 are opened by the main steel wire 5 and the auxiliary steel wire 51. Then the operator pulls the first clamping rod 124, and the first clamping rod 124 slides on the ejection slide slot 12, and the first clamping rod 124 rotates to the second fixed slot 122. At this time, the infusion tube 3, the needle tube 31 and the electrocuting knife head 7 are moved out of the jaws of the electrocoagulation forceps body 4 through the hollow steel wire 6, and then the second clamping rod 132 is moved along the opening and closing slide slot 13 to the third fixed slot 131 again. At this time, the electrocoagulation forceps body 4 is closed again, and the inner groove 41 can wrap the needle tube 31 at this time. Then the operator performs the power-on operation, which plays the role of knife-dropping electrocuting and coagulation.

[0041] When the injection needle mode is needed: in the knife-dropping mode, the first clamping rod 124 is moved out from the second fixed groove 122, and the first clamping rod 124 is made to slide along the puncture slide groove 123, driving the needle tube 31 to slide downward. At this time, the needle tube 31 can puncture to the designated position, and the liquid is injected into the infusion tube 3 through the syringe, thereby achieving the purpose of injection.

Claims

1. A multifunctional endoscopic surgical instrument, comprising a housing (1), characterized in that: The end of the shell (1) is provided with a cannula (2), the side wall of the shell (1) is provided with an ejection chute (12), both ends of the ejection chute (12) are provided with a first fixed groove (121) and a second fixed groove (122), the end of the ejection chute (12) is provided with a puncture chute (123), the inside of the ejection chute (12) is slidably provided with a first clamping rod (124), the side wall of the shell (1) is provided with an opening and closing chute (13), the side wall of the opening and closing chute (13) is provided with a third fixed groove (131), the inside of the opening and closing chute (13) is slidably provided with a second clamping rod (132), the end of the second clamping rod (132) is provided with a main steel wire (5), and the main steel wire (5) is slidably provided inside the cannula (2); The cannula (2) is provided with an infusion tube (3) movably inserted inside, a needle tube (31) is installed at the end of the infusion tube (3), an electric cutting knife head (7) is installed on the needle tube (31), an electric coagulation forceps body (4) is rotatably installed at the end of the cannula (2), an inner groove (41) is provided on the inner side of the jaws of the electric coagulation forceps body (4), a gap is left in the center after the electric coagulation forceps body (4) is closed, and the gap is adapted to the size of the electric cutting knife head (7), an auxiliary steel wire (51) is installed on the two pressure arms of the electric coagulation forceps body (4), the end of the auxiliary steel wire (51) is connected to the main steel wire (5), and the end of the first clamping rod (124) is fixed to the side wall of the infusion tube (3).

2. A multifunctional endoscopic surgical instrument according to claim 1, characterized in that: The shell (1) and the internal chamber of the cannula (2) are interconnected, a protrusion (11) is installed on the outside of the shell (1), an infusion tube (3) is installed through the protrusion (11) and the side wall of the shell (1), the infusion tube (3) is located in the internal chamber of the shell (1), and a ceramic (21) is installed at the end of the cannula (2).

3. A multifunctional endoscopic surgical instrument according to claim 1, characterized in that: A pair of guide covers (22) are installed on the side wall of the cannula (2), and an inner cavity (221) is formed between the interior of each guide cover (22) and the inner wall of the cannula (2). A main steel wire (5) and a hollow steel wire (6) are slidably arranged in the two inner cavities (221), and the two inner cavities (221) are respectively connected to the ejection chute (12) and the opening and closing chute (13).

4. A multifunctional endoscopic surgical instrument according to claim 1, characterized in that: The main steel wire (5) is formed by spirally winding two auxiliary steel wires (51).

5. The multifunctional endoscopic surgical instrument according to claim 2, characterized in that: A pair of auxiliary steel wires (51) are movably installed through the outer wall of the ceramic (21).

6. A multifunctional endoscopic surgical instrument according to claim 2, characterized in that: A support frame (43) is installed on the side wall of the ceramic (21), and the support frame (43) is interconnected with the rotation center of the electrocoagulation forceps body (4). A pair of transverse V-shaped frames (431) are installed inside the support frame (43), and the space formed inside the pair of transverse V-shaped frames (431) is larger than the size of the needle tube (31) and smaller than the size of the infusion tube (3).

7. The multifunctional endoscopic surgical instrument according to claim 1, characterized in that: The inner side of the jaws of the electrocoagulation forceps body (4) is provided with saw teeth, and the outer side of the jaws of the electrocoagulation forceps body (4) is provided with an insulating layer (42).

8. The multifunctional endoscopic surgical instrument according to claim 1, characterized in that: The electrosurgical cutting blade head (7) is in the shape of a flat cylinder and is provided with an injection hole (71). The injection hole (71) is fixed on the outside of the needle tube (31).

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