Scissor type electrosurgical closed cutting instrument
By designing a scissor electrosurgical closed cutting device with a bent and slender shape, the problem of difficult treatment of tortuous and deep tissues in the prior art is solved, and a more effective tissue closure and cutting effect is achieved.
Patent Information
- Application Number
- CN202421541405.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-07-01
AI Technical Summary
Existing scissor electrosurgical devices are difficult to effectively treat tortuous and deep tissues.
A scissor electrosurgical closed cutting device is designed, and its pliers are arranged bent from the axis in the plane, with a slender shape and a greater degree of bending, suitable for extending into the bent and deep human tissue, and has closure and cutting functions.
The shape and size of the clamp head of the instrument are more suitable for handling tissues in tortuous depths, and can more effectively close and cut tissues, overcoming the shortcomings of traditional instruments that are difficult to deal with tissues in depths.
Smart Images
Figure CN222917601U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electrosurgical instruments, and more specifically, to a scissors-type electrosurgical closing and cutting instrument. Background Art
[0002] During certain surgical procedures, it is necessary to seal blood vessels, fallopian tubes, catheters, adhesions and other vessels in the human body so that the above vessels or the like lose their functions or are closed; in addition, after the blood vessels, fallopian tubes, catheters, adhesions and other vessels are sealed, some surgeries also require cutting the above vessels.
[0003] In the related art, it is particularly applicable to use electrosurgical instruments for closing; and after the tissue is clamped by a mechanical clamp, high-frequency electric energy is used to heat and dry the tissue to promote the closing and sealing of the vessels or the like, which is a commonly used electrosurgical treatment solution at present.
[0004] According to different usage scenarios, electrosurgical instruments with the function of closing vessels are further divided into scissors-type, open-type with larger-sized jaws, and abdominal-type with smaller-sized jaws. Among them, scissors-type electrosurgical instruments are often used for the treatment of open tissues. Limited by the size and shape of their jaws, scissors-type electrosurgical instruments are usually very difficult to treat tortuous and deep tissues. Summary of the Utility Model
[0005] The purpose of the utility model is to overcome the deficiency that scissors-type electrosurgical instruments are very difficult to treat tortuous and deep tissues in the prior art, and provide a scissors-type electrosurgical closing and cutting instrument.
[0006] To achieve the above purpose, the technical solution provided by the utility model is as follows:
[0007] A scissors-type electrosurgical closing and cutting instrument of the utility model includes a cutting assembly, an activation assembly, and two handles rotatably connected by pins. The handles have jaws at the distal ends of the axes parallel to their planes; the jaws of the two handles have a first state of relative spacing and a second state of relative proximity. In the second state, the jaws of the two handles are configured to cooperate with each other to clamp the tissue located between the two jaws; the activation assembly is configured to apply high-frequency electric energy to the two jaws after activation to close the tissue clamped between the two jaws; at least one of the two jaws is provided with a knife groove, and the blade of the cutting assembly can be advanced along the knife groove to cut the closed tissue; the jaws are bent and arranged deviating from the axis in the plane, and the jaws have a first end close to the handle and a second end far from the handle. The width of the first end is greater than the width of the second end, the thickness of the first end is greater than the thickness of the second end, and the distal side of the second end is in an arc shape.
[0008] Furthermore, the pliers head has a first side edge arranged relatively along the axis, and a second side edge arranged relatively offset from the axis, and an angle between a tangent line of a midpoint of the first side edge and the axis is 25-45°.
[0009] Furthermore, the angle between the tangent direction of the first side and the axis is 40°.
[0010] Furthermore, the first side edge and the second side edge are both arc-shaped.
[0011] Furthermore, a ratio of a radius of the arc of the first side to a radius of the arc of the second side is 0.95-1.05.
[0012] Furthermore, the radius of the arc of the first side edge is equal to the radius of the arc of the second side edge.
[0013] Furthermore, the center of the arc of the first side and the center of the arc of the second side are staggered.
[0014] Furthermore, the width of the first end is 4.2-4.6 mm, and the thickness of the first end is 3.3-3.7 mm; the width of the second end is 2-2.4 mm, and the thickness of the second end is 1.5-1.9 mm.
[0015] Furthermore, a conductive electrode is provided on the inner side of the clamp head, and in the second state, a conductive path is formed between the conductive electrodes of the two clamp heads.
[0016] Furthermore, the activation component includes a trigger portion provided on one of the two handles, and a switch provided on the other handle, and in the second state, the trigger portion can trigger the switch.
[0017] Furthermore, the two handles are a first handle and a second handle, the cutting assembly is disposed in the first handle, the cutting assembly includes a knife bar, a blade and a wrench, the blade is disposed at the front end of the knife bar, the blade is at least partially a flexible structure, and the wrench is transmission-connected to the knife bar.
[0018] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:
[0019] The scissor-type electrosurgical closing and cutting instrument of the present utility model has a jaw head that is bent and disposed deviating from the axis in a plane, and the jaw head has a first end close to the handle and a second end far from the handle. The width of the first end is greater than that of the second end, and the distal side of the second end is in an arc shape. Therefore, under this structure, the shape and size of the jaw head form a more slender jaw head shape compared to the jaw head of the traditional scissor-type electrosurgical closing and cutting instrument, and the bending degree of the jaw head is greater, which is more conducive to extending into the bent and deep human tissue and closing and cutting the tissue to be treated. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of the scissor-type electrosurgical closing and cutting instrument of the present utility model;
[0021] Figure 2 is a schematic structural diagram of the jaw head in the present utility model;
[0022] Figure 3 is a schematic diagram of the bending angle of the jaw head in the present utility model;
[0023] Figure 4 is a schematic structural diagram of the first side and the second side of the jaw head in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] To further understand the content of the present utility model, the present utility model will be described in detail with reference to the accompanying drawings and embodiments.
[0025] Referring to Figure 1 , this embodiment provides a scissor-type electrosurgical closing and cutting instrument. Specifically, the scissor-type electrosurgical closing and cutting instrument of this embodiment includes scissors 100 and a plug 200. The scissors 100 and the plug 200 are connected by a connecting wire 210. The scissors 100 include a cutting assembly, an activation assembly, and two handles. Among them, referring to Figure 1 , the two handles can be rotatably connected by a pin 150. The pin 150 can be located in the middle of the handle but close to the distal end. The process of the two handles rotating relative to the pin 150 is similar to that of a surgical scissor or a surgical forceps, that is, it can clamp tissues. The activation assembly is located in one of the two handles, or a part is located in one handle and the other part is located in the other handle; the function of the activation assembly is similar to that of a switch, that is, after the activation assembly is activated, the jaw head located at the distal end of the handle is energized with an external electrosurgical instrument, so as to use electrosurgical energy to seal the clamped tissue and achieve the electrosurgical closing function. The cutting assembly is located in one of the two handles. After the clamped tissue is sealed, the cutting assembly can be used to cut the tissue clamped between the jaw heads.
[0026] Referring to Figure 1, as a specific embodiment, each handle may be provided with a jaw head at the distal end of the axis parallel to its plane. At least one of the two jaw heads is provided with a knife groove, and the blade of the cutting assembly can be advanced along the knife groove. There are two states between the jaw heads of the two handles. In the first state, the jaw heads of the two handles are in a relatively spaced position; in the second state, the jaw heads of the two handles are in a relatively close position. The knife groove can be arranged generally along the axial direction or generally along the shape direction of the jaw head.
[0027] When treating tissue, the two jaw heads can be first placed in the second state. In this second state, the two jaw heads can cooperate with each other to clamp the tissue between the two jaw heads. Then, in the second state, the activation assembly can be activated, so that high-frequency electric energy is applied to the two jaw heads to close the tissue clamped between the two jaw heads, closing tissues such as blood vessels, fallopian tubes, ducts, and adhesion tissues. Finally, according to the treatment needs, the blade can be advanced along the knife groove so that the blade can cut the closed tissue.
[0028] In this embodiment, in order to solve the deficiency in the prior art that it is difficult for scissor-type electrosurgical instruments to treat tortuous and deep tissues, the jaw head of this embodiment is bent and arranged deviating from the axis in the plane, and the jaw head has a first end close to the handle and a second end far from the handle. The width of the first end is greater than the width of the second end, and the thickness of the first end is greater than the thickness of the second end. The distal side of the second end is in an arc shape. Therefore, with the jaw head in this structure, the shape and size of the jaw head are more slender than those of the jaw head of the traditional scissor-type electrosurgical closing and cutting instrument, and the bending degree of the jaw head is greater, which is more conducive to reaching the tortuous and deep human tissue and closing and cutting the tissue to be treated.
[0029] Refer to Figure 2, As a specific example, the two jaws can be the first jaw 130 and the second jaw 140 respectively. The first jaw 130 has a first functional section 131 at the distal end and a first connecting section 132 at the proximal end. The second jaw 140 has a second functional section 141 at the distal end and a second connecting section 142 at the proximal end. The pin 150 is located on the first connecting section 132 and the second connecting section 142, that is, the pin 150 is located in the middle of the handle but close to the distal end. The first functional section 131 is provided with a first guide electrode 133 on the side facing the second functional section 141, and the second functional section 141 is provided with a second guide electrode 143 on the side facing the first functional section 131. In some examples, the first guide electrode 133 and the second guide electrode 143 are simultaneously electrically connected to an external electrosurgical energy platform. When the first jaw 130 and the second jaw 140 are clamped, the first guide electrode 133 and the second guide electrode 143 are energized with the electrosurgical energy platform after the activation component is activated, and high-frequency current flows through the first guide electrode 133, the tissue, and the second guide electrode 143 to heat and dry the tissue to complete the sealing of the tissue; in other examples, the first guide electrode 133 and / or the second guide electrode 143 are connected to one electrode of the electrosurgical energy platform, and the other electrode of the electrosurgical energy platform is attached to the human body through a single board. When the first jaw 130 and the second jaw 140 are clamped, the first guide electrode 133 and / or the second guide electrode 143 are energized with the electrosurgical energy platform after the activation component is activated, and high-frequency current flows through the guide electrode, the tissue, and the single board to heat and dry the tissue to complete the sealing of the tissue.
[0030] As a further optimization of this embodiment, referring to Figure 3 , the jaw has a first side 134 arranged relatively along the axis and a second side 135 arranged relatively deviated from the axis. The angle between the tangent of the midpoint of the first side 134 and the axis is Figure 3 the angle α shown in, and the size of this angle α is 25 to 45°. At 25 to 45° of this angle α, the preferred angle size is 40°. At this angle size, it is easier to insert the jaw into the tortuous and deep tissue of the human body.
[0031] As a further optimization, referring to Figure 4 , the first side 134 and the second side 135 can both be arc-shaped. In addition, just as Figure 4As shown, the arc of the first side 134 is on a circle with a center O1 and a radius R1, and the arc of the second side 135 is on a circle with a center O2 and a radius R2. As an example, the ratio of the radius of the arc of the first side 134 to the radius of the arc of the second side 135 is 0.95~1.05, that is, the value of R1 / R2 is 0.95~1.05. Within the ratio range of 0.95~1.05, the preferred ratio is 1, that is, the radius of the arc of the first side 134 is equal to the radius of the arc of the second side 135. In addition, in order to facilitate the formation Figure 4 In the shape of the pliers head shown, the center O1 of the arc of the first side 134 and the center O2 of the arc of the second side 135 are offset from each other.
[0032] Reference Figure 3 In order to better extend the forceps head into the tortuous and deep tissues of the human body, the width D of the first end is 4.2~4.6mm, and the thickness of the first end is 3.3~3.7mm; the width d of the second end is 2~2.4mm, and the thickness of the second end is 1.5~1.9mm.
[0033] In this embodiment, as a specific example of an activation component, the activation component includes a trigger portion 112 arranged on one of the two handles, and a switch 122 arranged on the other handle. In the second state, the trigger portion 112 can trigger the switch 122, and the switch 122 can be coupled with the conductive circuit of the electrosurgical energy platform and the forceps head to control the opening and closing of the conductive circuit.
[0034] Similarly, as a specific example of a cutting assembly, the two handles are a first handle 110 and a second handle 120. The first handle 110 is provided with a cutting assembly, which includes a knife bar, a blade, and a wrench 160. The blade is provided at the front end of the knife bar, and at least part of the blade is a flexible structure. The wrench 160 is connected to the knife bar in a transmission manner. When the wrench 160 is turned, the wrench 160 can move the knife bar in the first handle 110 through a gear rack transmission assembly, a lead screw transmission assembly, or any other transmission assembly that can drive the knife bar to move, so as to drive the blade to advance or retract along the knife groove.
[0035] In addition, a locking structure 170 may be provided, and the locking structure 170 is used to implement at least one of a locking function and a stopping function. Specifically, the locking structure 170 may be a buckle structure provided between the first handle 110 and the second handle 120. When the jaws are in the second state, the buckle structures between the first handle 110 and the second handle 120 are engaged with each other to lock the two jaws; the locking structure 170 may also be set as a retractable protrusion. When the jaws are in the second state, due to the existence of the protrusion between the first handle 110 and the second handle 120, they cannot be completely closed, so that a gap is formed between the first jaw 130 and the second jaw 140 to improve the closing effect.
[0036] To facilitate the operation of the scissors-type electrosurgical closing and cutting instrument of this embodiment, a first finger ring 111 may also be provided on the first handle 110, and a second finger ring 121 may also be provided on the second handle 120. A connecting portion 123 may be provided at the end of the second handle 120, that is, the end of the second handle 120 away from the second jaw 140, and the connecting portion 123 is used to connect with the connecting wire 210.
[0037] The above schematically describes the present invention and its embodiments, and this description is not restrictive. What is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if those of ordinary skill in the art are inspired by it and design similar structural forms and embodiments to this technical solution without creative work without departing from the gist of the present invention, they shall fall within the protection scope of the present invention.
Claims
1. A scissor-type electrosurgical closed cutting instrument, comprising a cutting assembly, an activation assembly, and two handles rotatably connected by a pin, wherein the handles have a pliers head at the distal end of an axis parallel to the plane thereof; the pliers heads of the two handles have a first state in which they are relatively spaced apart, and a second state in which they are relatively close to each other, in which the pliers heads of the two handles are configured to cooperate with each other to clamp tissue between the two pliers heads; the activation assembly is configured so that after activation, high-frequency electric energy is applied to the two pliers heads to close the tissue clamped between the two pliers heads; at least one of the two pliers heads is provided with a knife groove, and the blade of the cutting assembly can be pushed along the knife groove to cut the closed tissue; characterized in that: The pliers head is bent and arranged in the plane away from the axis, and has a first end close to the handle and a second end away from the handle, the width of the first end is greater than the width of the second end, the thickness of the first end is greater than the thickness of the second end, and the distal side of the second end is in an arc shape.
2. A scissor-type electrosurgical closed cutting instrument according to claim 1, characterized in that: The pliers head has a first side edge arranged relatively along the axis, and a second side edge arranged relatively offset from the axis, and an angle between a tangent line of a midpoint of the first side edge and the axis is 25-45°.
3. A scissor-type electrosurgical closed cutting instrument according to claim 2, characterized in that: The angle between the tangent direction of the first side and the axis is 30°.
4. A scissor-type electrosurgical closed cutting instrument according to claim 2, characterized in that: The first side edge and the second side edge are both arc-shaped.
5. A scissor-type electrosurgical closed cutting instrument according to claim 4, characterized in that: The ratio of the radius of the arc of the first side to the radius of the arc of the second side is 0.95-1.
05.
6. A scissor-type electrosurgical closed cutting instrument according to claim 5, characterized in that: The radius of the arc of the first side is equal to the radius of the arc of the second side.
7. A scissor-type electrosurgical closed cutting instrument according to claim 5, characterized in that: The center of the arc of the first side is staggered with the center of the arc of the second side.
8. The scissor-type electrosurgical closed cutting instrument according to claim 1, characterized in that: The width of the first end is 4.2-4.6 mm, and the thickness of the first end is 3.3-3.7 mm; the width of the second end is 2-2.4 mm, and the thickness of the second end is 1.5-1.9 mm.
9. The scissor-type electrosurgical closed cutting instrument according to claim 1, characterized in that: A conductive electrode is disposed inside the clamp head, and in the second state, a conductive path is formed between the conductive electrodes of the two clamp heads.
10. The scissor-type electrosurgical closed cutting instrument according to claim 1, characterized in that: The activation assembly includes a trigger portion disposed on one of the two handles, and a switch disposed on the other handle. In the second state, the trigger portion can trigger the switch.
11. A scissor-type electrosurgical closed cutting instrument according to claim 1, characterized in that: The two handles are a first handle and a second handle. The cutting assembly is arranged in the first handle. The cutting assembly includes a knife bar, a blade and a wrench. The blade is arranged at the front end of the knife bar. The blade is at least partially a flexible structure. The wrench is drivingly connected to the knife bar.