Bipolar electrocoagulation forceps and electrosurgical instrument

Abstract

The bipolar electrocoagulation forceps comprise a forceps head, a forceps rod and a handle, the forceps head is arranged at one end of the forceps rod, and the handle is arranged at the other end, away from the forceps head, of the forceps rod. The forceps further comprise a forceps head control assembly, the forceps head control assembly is arranged in the handle and comprises a pull rod, reversers, a rotary knob and a trigger, the reversers comprise the first reverser and the second reverser, and at least one of the first reverser and the second reverser is electrically connected with the forceps head. By arranging the commutator, the overall structure of the instrument is simplified, and the stability of electric connection between the commutator and the forceps head is ensured while the function that the forceps head can rotate by 360 degrees is achieved.

Description

Technical Field

[0001] The utility model relates to the field of medical device supplies, and particularly relates to a bipolar coagulation forceps and an electrosurgical instrument. Background Art

[0002] In minimally invasive laparoscopic human surgeries, there are single-port operation channels and multi-port operation channels. The single-port combined operation channel makes an incision of 3-4 cm in the human abdominal cavity, clips the combined operation channel at the single-port entrance into the incision, and the surgical instruments enter the human body through the combined operation channel. During the operation, for the lesions found inside the human body that need to be excised, if massive bleeding occurs in blood vessels or a certain part needs coagulation during the excision process, the instrument is also required to have the function of coagulation.

[0003] Currently, for the bipolar coagulation forceps, the surgical operation steps are cumbersome, and the 360° rotation of the bipolar forceps head cannot be achieved, which will cause wire entanglement, lack of convenience, affect the clamping movement, and lead to poor surgical results. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a bipolar coagulation forceps in view of the deficiencies of the prior art.

[0005] To achieve the above purpose, the utility model adopts the following solution:

[0006] A bipolar coagulation forceps includes a forceps head, a forceps rod, and a handle. The forceps head is arranged at one end of the forceps rod, and the handle is arranged at the other end of the forceps rod away from the forceps head.

[0007] It further includes a forceps head control assembly. The forceps head control assembly is arranged inside the handle. The forceps head control assembly includes a pull rod, a commutator, a knob, and a trigger. The commutator includes a first commutator and a second commutator, and at least one of the first commutator and the second commutator is electrically connected to the forceps head.

[0008] Furthermore, it further includes a forceps rod fixing seat. The forceps rod fixing seat is fixedly connected to the forceps rod. A protrusion is arranged on the side surface of the forceps rod fixing seat. The protrusion protrudes from the first commutator, and the forceps rod fixing seat is clamped inside the first commutator through the protrusion.

[0009] Furthermore, the knob is arranged in a gear shape, the knob is fixedly connected to the forceps rod, and is arranged outside the handle. The knob is used to control the rotation of the forceps rod.

[0010] Furthermore, both the first commutator and the second commutator are arranged in a C shape, and the inner diameter of the first commutator is larger than the inner diameter of the second commutator; at least one of the first commutator and the second commutator has at least part of it as a flexible structure.

[0011] Furthermore, at least a portion of the first commutator is in contact with the clamp rod fixing seat to achieve electrical connection between the clamp rod fixing seat and the first commutator; and / or at least a portion of the second commutator is in contact with the pull rod to achieve electrical connection between the second commutator and the pull rod.

[0012] Furthermore, the second commutator includes a first horizontal portion close to the handle, a first vertical portion is respectively provided on both sides of the first horizontal portion, a second horizontal portion is provided on the side of the first vertical portion away from the first horizontal portion, and a second vertical portion is provided on the side of the second horizontal portion away from the first vertical portion, and the first vertical portion, the second horizontal portion and the second vertical portion together form a C-shaped structure bent toward the inside of the second commutator.

[0013] Furthermore, an edge of the second vertical portion of the second commutator is configured to be bent inwardly toward the first vertical portion.

[0014] Furthermore, the surface of the pull rod between the first commutator and the second commutator is coated with an insulating layer.

[0015] Furthermore, the trigger is arranged to be transmission-connected with the pull rod, and the trigger is used to control the opening and closing of the pliers head.

[0016] An electrosurgical instrument comprises an energy platform and an external electrocoagulation forceps, wherein the external electrocoagulation forceps is any of the above-mentioned bipolar electrocoagulation forceps.

[0017] The advantages of the utility model compared with the prior art are: the utility model provides a bipolar coagulation forceps, including a first commutator and a second commutator, the first commutator is in contact with the clamp rod fixing seat to achieve electrical connection, the second commutator is in contact with the pull rod to achieve electrical connection, and the part of the pull rod located between the first commutator and the second commutator is coated with an insulating layer, which can ensure that a current loop is formed between the first commutator and the second commutator, and also includes a knob, the knob is fixedly connected to the clamp rod, and the clamp rod is fixedly connected to the clamp rod fixing seat. When the knob is rotated 360°, the clamp rod fixing seat is driven to rotate in the first commutator without being separated from the first commutator, and the pull rod is driven to rotate in the second commutator without being separated from the second commutator. This ensures that the bipolar coagulation forceps can achieve the clamping and coagulation functions of the instrument even when it is rotated 360°, increases the range of motion of the clamp head, and ensures that the lines connected to the first commutator and the second commutator will not be entangled, thereby improving the safety and reliability of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the front view of the utility model;

[0019] Figure 2 It is a three-dimensional structural diagram of the utility model;

[0020] Figure 3Schematic internal structure diagram of the handle of the present utility model;

[0021] Figure 4 Schematic three - dimensional structure diagram of the second commutator of the present utility model.

[0022] Wherein: 1. Forceps head; 2. Forceps rod; 3. Knob; 4. Pull rod; 5. Handle; 6. Trigger; 7. Forceps rod fixing seat; 8. First commutator; 9. Insulating layer; 10. Second commutator; 10 - 1. First horizontal part; 10 - 2. First vertical part; 10 - 3. Second horizontal part; 10 - 4. Second vertical part. Specific embodiments

[0023] To further understand the content of the present utility model, the following will describe the present utility model in detail with reference to the drawings and embodiments.

[0024] As Figure 1-2 shown, a bipolar electrocoagulation forceps includes a forceps head 1, a forceps rod 2 and a handle 5. The forceps head 1 is arranged at one end of the forceps rod 2, and the handle 5 is arranged at the other end of the forceps rod 2 away from the forceps head 1. The forceps head 1 is used to contact the diseased tissue of the patient, and high - frequency electric energy can be applied to the forceps head 1 to evaporate, dry or cauterize the tissue between the forceps heads 2, so as to realize the blood coagulation function of the bipolar electrocoagulation forceps. The handle 5 is used to control the opening and closing of the forceps head 1. The bipolar electrocoagulation forceps further includes a forceps head control assembly. The forceps head control assembly is arranged inside the handle 5 and includes a pull rod 4, a commutator, a knob 3 and a trigger 6. The commutator includes a first commutator 8 and a second commutator 10. The first commutator 8 and the second commutator 10 are respectively electrically connected to the two forceps heads 1 to realize the function of coagulating the tissue of the bipolar electrocoagulation forceps.

[0025] The materials of the first commutator 8 and the second commutator 10 can be cobalt - based alloy, titanium - based alloy, stainless steel, shape memory alloy, or any other material that can achieve the same function.

[0026] As Figure 3 shown, a bipolar electrocoagulation forceps further includes a forceps rod fixing seat 7. The forceps rod fixing seat 7 is fixedly connected to the forceps rod 2. A protrusion is arranged on the side surface of the forceps rod fixing seat 7, and the protrusion protrudes from the first commutator 8. The forceps rod fixing seat 7 is rotatably clamped inside the first commutator 8 through the protrusion. As Figure 1-3 shown, a bipolar electrocoagulation forceps further includes a knob 3. The knob 3 is arranged in a gear shape and is fixedly connected to the forceps rod 2. The knob 3 is arranged outside the handle 5, and the operator can control the rotation of the forceps head 1 and the forceps rod 2 through the knob 3.

[0027] As Figure 3As shown, the first commutator 8 and the second commutator 10 are both configured to be C-shaped, the inner diameter of the first commutator 8 is larger than the inner diameter of the second commutator 10, and the first commutator 8 and the second commutator 10 are both configured to be flexible structures. The flexible portion of the first commutator 8 contacts the clamp rod fixing seat 7 to achieve electrical connection between the clamp rod fixing seat 7 and the first commutator 8, and the flexible portion of the second commutator 10 contacts the pull rod 4 to achieve electrical connection between the pull rod 4 and the second commutator 10.

[0028] like Figure 3 As shown, the surface of the part of the pull rod 4 between the first commutator 8 and the second commutator 10 is covered with an insulating layer 9, and the function of the insulating layer 9 is to electrically isolate the pull rod 4 from the clamp rod fixing seat 7, thereby preventing a short circuit from occurring at the contact point between the pull rod 4 and the clamp rod fixing seat 7. The insulating layer 9 can be made of polyvinyl chloride, polyethylene, polyvinylidene fluoride, or any other material that can achieve the same effect.

[0029] When the knob 3 is rotated, the knob 3 drives the pliers head 1, the pliers rod 2 and the pull rod 4 to rotate. The pliers rod fixing seat 7 is fixedly connected to the pliers rod 2. When the pliers rod 2 rotates, the pliers rod fixing seat 7 will be driven to rotate in the first commutator 8. At the same time, because the side of the pliers rod fixing seat 7 is provided with a protrusion, it can be ensured that when the pliers rod fixing seat 7 rotates in the first commutator 8, it will not be separated from the first commutator 8, thereby ensuring the stability of the structure; by setting the commutator part as a flexible structure, it can be ensured that the pliers rod fixing seat 7 is clamped in the first commutator 8 and the pull rod 4 is clamped in the second commutator 10. When the knob 3 is rotated to drive the pliers rod fixing seat 7 and the pull rod 4 to rotate, it can be ensured that the pliers rod fixing seat 7 will not be separated from the contact with the first commutator 8, and the pull rod 4 will not be separated from the contact with the second commutator 10, thereby ensuring the stability of the electrical connection between the pliers rod fixing seat 7 and the first commutator 8, and the pull rod 4 and the second commutator 10.

[0030] like Figure 4 As shown, the second commutator 10 includes a first horizontal portion 10-1 that is close to the handle 5, a first vertical portion 10-2 is respectively arranged on both sides of the first horizontal portion 10-1, a second horizontal portion 10-3 is arranged on the side of the first vertical portion 10-2 away from the first horizontal portion 10-1, and a second vertical portion 10-4 is arranged on the side of the second horizontal portion 10-3 away from the first vertical portion 10-2. The first vertical portion 10-2, the second horizontal portion 10-3 and the second vertical portion 10-4 together form a C-shaped structure bent toward the inside of the second commutator 10, and the edge of the second vertical portion 10-4 of the second commutator 10 is arranged to be bent inwardly toward the first vertical portion 10-2; as shown Figure 1-2 As shown, the trigger 6 is in transmission connection with the pull rod 4 , and the operator can pull the trigger 6 to drive the pull rod 4 to retreat, thereby opening the pliers head 1 .

[0031] By setting the commutator to a C shape, the structure is made simpler, facilitating disassembly and assembly. By setting the second vertical portion 10-4 of the second commutator 10 to be bent inward, the friction between the trigger 6 driving the pull rod 4 to move back and forth and the second vertical portion 10-4 can be reduced, ensuring the smooth movement of the pull rod 4 back and forth, reducing the wear of the instrument, and further ensuring the stability of the electrical connection between the pull rod 4 and the second commutator 10.

[0032] As Figure 1-3 described, an electrosurgical instrument includes an energy platform and an externally connected electrocoagulation forceps, and the externally connected electrocoagulation forceps is the bipolar electrocoagulation forceps described above in this embodiment.

[0033] The above content described in this specification is only an example of the structure of the present invention. Those skilled in the technical field to which the present invention pertains can make various modifications or supplements to the specific embodiments described or use similar methods for substitution, as long as they do not deviate from the structure of the present invention or exceed the scope defined by this claim book, they all fall within the protection scope of the present invention.

Claims

1. A bipolar electrocoagulation forceps, comprising a forceps head, a forceps rod and a handle, wherein the forceps head is arranged at one end of the forceps rod, and the handle is arranged at the other end of the forceps rod away from the forceps head, and is characterized in that it further comprises a forceps head control assembly, the forceps head control assembly is arranged inside the handle, the forceps head control assembly comprises a pull rod, a commutator, a knob and a trigger, the commutator comprises a first commutator and a second commutator, and at least one of the first commutator and the second commutator is electrically connected to the forceps head.

2. The bipolar electrocoagulation forceps according to claim 1, wherein, It further comprises a forceps rod fixing seat, the forceps rod fixing seat is fixedly connected to the forceps rod, a protrusion is arranged on the side surface of the forceps rod fixing seat, the protrusion protrudes from the first commutator, and the forceps rod fixing seat is clamped in the first commutator through the protrusion.

3. The bipolar electrocoagulation forceps according to claim 1, characterized in that, The knob is arranged in a gear shape, the knob is fixedly connected to the forceps rod and is arranged outside the handle, and the knob is used to control the rotation of the forceps rod.

4. The bipolar electrocoagulation forceps according to claim 1, characterized in that, Both the first commutator and the second commutator are arranged in a C shape, and the inner diameter of the first commutator is larger than the inner diameter of the second commutator; at least one of the first commutator and the second commutator has at least part of it as a flexible structure.

5. The bipolar electrocoagulation forceps according to claim 4, characterized in that At least part of the first commutator is in contact with the forceps rod fixing seat to realize the electrical connection between the forceps rod fixing seat and the first commutator; and / or, At least part of the second commutator is in contact with the pull rod to realize the electrical connection between the second commutator and the pull rod.

6. The bipolar electrocoagulation forceps according to claim 5, wherein The second commutator comprises a first horizontal part closely attached to the handle, a first vertical part is arranged on each of the two sides of the first horizontal part, a second horizontal part is arranged on the side of the first vertical part away from the first horizontal part, and a second vertical part is arranged on the side of the second horizontal part away from the first vertical part, and the first vertical part, the second horizontal part and the second vertical part together form a C-shaped structure bent towards the inside of the second commutator.

7. The bipolar coagulation forceps according to claim 6, characterized in that, The edge of the second vertical part of the second commutator is arranged to be bent inwards towards the first vertical part.

8. The bipolar electrocoagulation forceps according to claim 1, characterized in that, An insulating layer is coated on the surface of the part of the pull rod located between the first commutator and the second commutator.

9. The bipolar electrocoagulation forceps according to claim 1, wherein, The trigger is arranged to be in transmission connection with the pull rod, and the trigger is used to control the opening and closing of the forceps head.

10. An electrosurgical instrument, characterized in that, It comprises an energy platform and an external electrocoagulation forceps, and the external electrocoagulation forceps is the bipolar electrocoagulation forceps according to any one of claims 1-9.

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