CN115120336A

CN115120336A - Disposable open type high-frequency electrosurgical closer

Info

Publication number: CN115120336A
Application number: CN202210792815.2A
Authority: CN
Inventors: 盛有明
Original assignee: Nanjing Shouliang Medical Technology Co ltd
Current assignee: Nanjing Shouliang Medical Technology Co ltd
Priority date: 2022-07-05
Filing date: 2022-07-05
Publication date: 2022-09-30
Anticipated expiration: 2042-07-05
Also published as: CN115120336B

Abstract

The invention relates to the technical field of closers, in particular to a disposable open type high-frequency electrosurgical closer, which comprises an X-shaped combined arm, a first connecting rod component and a multifunctional structure, wherein the X-shaped combined arm is connected with the first connecting rod component; the X-shaped combined arm comprises two arms which are connected in a rotating way; the first connecting rod component comprises a force bearing rod and a force transmission rod which are connected in a rotating mode; the multifunctional structure comprises a deformation body and a shifting block; the shifting block is positioned at a first position in an original state of the deformation body, and the shifting block is attached to the stress rod to limit the rotation of the stress rod; and in the deformation state, the shifting block is positioned at the second position, and the shifting block is far away from the stress rod to remove the limitation. According to the invention, through the size and shape control of the multifunctional structure, the effective stopping effect can be still ensured when the distance between the two force application parts is changed, so that the first force application part can obtain a larger force arm to effectively close the tissue through smaller force, and meanwhile, the second force application part can ensure enough strength through smaller length.

Description

Disposable open type high-frequency electrosurgical closer

Technical Field

The invention relates to the technical field of closers, in particular to a disposable open type high-frequency electrosurgical closer.

Background

The tissue closer consists of a pair of forceps bodies and an electrode holder, the tail ends of the pair of forceps bodies are respectively connected with the electrode holder, and a high-frequency input plug is arranged on the electrode holder.

In the existing closer, a cutting blade is arranged between the two forceps bodies, and after tissue closing is finished, the tissue is cut off after the tissue is closed through the linear movement of the cutting blade between the two forceps bodies. The first force application part providing relative movement power for the double forceps bodies and the second force application part providing linear power for the cutting blades in the existing structure are relatively independent, independent parts are required to be arranged to meet the structure and function requirements of the double forceps bodies respectively, the first force application part in a state of not providing power provides a stopping position for the second force application part, misoperation is avoided before the double forceps bodies are closed, the cutting blades are prevented from extending out, and the positions of the first force application part and the second force application part sensing acting force are close to each other in the mode.

In the existing structure, the double forceps bodies are closed for facilitating the force application, so that the force application position is far away from the positions of the double forceps bodies as far as possible to prolong the force arm; since the cutting blade is operated under the pushing force, in order to ensure that the cutting blade has enough strength, the second force application part and the first force application part are close to the cutting position as much as possible, which obviously conflicts with the requirement of the current first force application part and the second force application part, namely, the strength of the combination of the cutting blade and the second force application part is abandoned to a certain extent in the prior art to meet the requirement of the stop.

Disclosure of Invention

The invention provides a disposable open type high-frequency electrosurgical closer, which can effectively solve the problems in the background art.

In order to achieve the purpose, the invention adopts the technical scheme that:

a disposable open high frequency electrosurgical closer comprising an X-shaped combination arm, a first link assembly, and a multi-functional structure;

the X-shaped combined arm comprises two arms which are rotatably connected through a cross point, the two arms are used for respectively mounting the two electrode holders, and the cross angle of the X-shaped combined arm is changed under the action of external force;

the first connecting rod component comprises a force bearing rod and a force transmission rod which are connected in a rotating mode; one end of the dowel bar is rotatably connected with the end part of the cutting blade constrained to move linearly through a first rotating point, the other end of the dowel bar is rotatably connected with the stress bar, the stress bar is rotatably arranged around a second rotating point and rotates under the action of external acting force, and thrust is provided for the cutting blade through the dowel bar;

the multifunctional structure comprises a deformation body and a shifting block; one end of the shifting block is rotationally arranged around a third rotating point; one end of the deformation body is fixed through a first fixing point and is provided with a connecting part with the shifting block;

the deformation body comprises an original state and a deformation state; in an original state, the shape changing body positions the shifting block at a first position, and the shifting block is attached to the stress rod to limit the rotation of the stress rod; in the deformation state, the deformation body positions the shifting block at a second position, and the shifting block is far away from the stress rod to be free from limitation; the deformation of the deformation body is realized by the extrusion of the X-shaped combined arm in the process that the crossing angle of the X-shaped combined arm is reduced and the two electrode holders are close to each other;

first pivot point, second pivot point, third pivot point and first fixed point are in on cutting blade rectilinear motion's the direction, keep away from in proper order cutting blade, and under the equidirectional, connecting portion are located between third pivot point and the first fixed point.

Further, the deformation body comprises a main body arranged in a first arm of the X-shaped combination arm, and an elastic rod led out towards one side of the cutting blade relative to the main body, wherein the elastic rod partially protrudes out of the first arm and is jointed with a second arm of the X-shaped combination arm;

the main body is fixedly arranged relative to the first arm, and the joint of the main body and the elastic rod is the first fixing point;

the elastic rod realizes the transformation of the deformation body from the initial state to the deformation state through deformation.

Furthermore, the second rotating point and the third rotating point are both fixedly connected with the main body.

Further, main part one side is provided with the depressed area, cutting blade, dowel steel and shifting block are located in the depressed area.

Further, the edge of the recessed area provides at least a local location for guiding the cutting blade.

Furthermore, a strip-shaped hole is formed in the shifting block corresponding to the connecting part, a guide rod is arranged on the deformation body corresponding to the connecting part, and the guide rod is inserted into the strip-shaped hole and attached to the side wall of the strip-shaped hole; the axis of the guide bar is perpendicular to the direction of movement of the cutting blade.

Further, the stress rod comprises a U-shaped section and a limiting section;

the middle part of the U-shaped section is connected with the main body to obtain the second rotating point, and the U-shaped section penetrates through the main body to enable two ends to be respectively positioned at two sides of the main body;

the limiting section is installed in the middle of the U-shaped section and matched with the shifting block.

Furthermore, a clamping groove is formed in the limiting section, and the limiting section is matched with the local protruding position of the shifting block through the clamping groove.

Furthermore, the limiting section is of a sheet structure.

Further, the U-shaped section comprises a first side and a second side which are butted along the axis direction of a second rotating point, a boss is arranged on the first side along the axis direction, and a groove body for accommodating the boss is arranged on the second side;

the limiting section is sleeved on the boss, and the first side and the second side which are positioned are clamped tightly.

Through the technical scheme of the invention, the following technical effects can be realized:

the invention provides a technical scheme for fundamentally separating a first force application part which provides relative movement power for a pair of forceps bodies and a second force application part which provides linear power for a cutting blade, wherein the first force application part is realized by a local position on an X-shaped combined arm, and the second force application part is realized by a first connecting rod component; multifunctional structure then realizes the effect of transition between the two, and size and shape control through multifunctional structure can realize when two application of force parts's distance changes, still guarantee effectual backstop effect to make first application of force part can obtain the bigger arm of force and realize organizing effectual closure through less dynamics, make the second application of force part guarantee sufficient intensity through less length simultaneously, realize stable cutting.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic overall view of a disposable open high frequency electrosurgical closure according to the present invention;

FIG. 2 is a schematic view of the deformed body after deformation and before deformation, and the state change of the first link assembly and the cutting blade;

FIG. 3 is a partial schematic view of an X-type combination arm;

FIG. 4 is a schematic view of the combination of the first link assembly and the multi-functional structure;

FIG. 5 is a schematic view of the reverse side of FIG. 4 (the cutting blade is partially covered by the X-shaped compound arm);

FIG. 6 is a schematic structural diagram of a deformation;

FIG. 7 is an enlarged view of a portion of FIG. 4 at A;

FIG. 8 is an enlarged view of a portion of FIG. 6 at B;

FIG. 9 is a schematic view of the process before and after the setting block is installed relative to the force-bearing rod;

FIG. 10 is an enlarged view of a portion of FIG. 9 at C;

FIG. 11 is a cross-sectional view at a second pivot point location;

reference numerals: 1. an X-shaped combination arm; 11. a first end; 12. a second end; 13. a third end; 14. a fourth end; 15. an intersection point; 2. a first link assembly; 21. a stress beam; 21a, a second rotation point; 21b, a U-shaped section; 21b-1, first side; 21b-2, second side; 21c, a limiting section; 21c-1, a card slot; 22. a dowel bar; 22a, a first rotation point; 3. a multifunctional structure; 31. a morphic body; 31a, a first fixing point; 31b, a main body; 31c, an elastic rod; 32. shifting blocks; 32a, a third rotation point; 4. a cutting blade; 5. a connecting portion; 51. a strip-shaped hole; 52. a guide rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in figures 1-6, the disposable open type high-frequency electrosurgical closer comprises an X-shaped combined arm 1, a first connecting rod component 2 and a multifunctional structure 3; the X-shaped combined arm 1 comprises two arms which are rotatably connected through a cross point 15, the two arms are used for respectively installing the two electrode bases, and the cross angle of the X-shaped combined arm 1 is changed under the action of external force.

The first link assembly 2 comprises a force bearing rod 21 and a force transmission rod 22 which are connected in a rotating mode; one end of the dowel bar 22 is rotationally connected with the end part of the cutting blade 4 constrained to move linearly through a first rotating point 22a, the other end of the dowel bar 22 is rotationally connected with the stress bar 21, the stress bar 21 is rotationally arranged around a second rotating point 21a and rotates when being subjected to external acting force, and thrust is provided for the cutting blade 4 through the dowel bar 22.

The multifunctional structure 3 comprises a deformation body 31 and a shifting block 32; one end of the shifting block 32 is rotatably arranged around a third rotating point 32 a; the deformation body 31 is fixed at one end by a first fixing point 31a and is provided with a connecting part 5 connected with the shifting block 32; wherein the deformation body 31 comprises an original state and a deformation state; in the original state, the deformation body 31 positions the shifting block 32 at the first position, and the shifting block 32 is attached to the stress rod 21 to limit the rotation of the stress rod 21; in the deformed state, the deformation body 31 positions the shifting block 32 at the second position, and the shifting block 32 is far away from the stress rod 21 to be free from limitation; the deformation of the deformation body 31 is realized by the extrusion of the X-shaped combination arm 1 in the process that the crossing angle of the X-shaped combination arm 1 is reduced and the two electrode holders are close to each other.

In the present invention, the first rotation point 22a, the second rotation point 21a, the third rotation point 32a and the first fixing point 31a are sequentially distant from the cutting blade 4 in the direction in which the cutting blade 4 is linearly moved, and the connection portion 5 is located between the third rotation point 32a and the first fixing point 31a in the same direction.

The invention provides a technical scheme capable of fundamentally separating a first force application part for providing relative movement power for a pair of forceps bodies and a second force application part for providing linear power for a cutting blade 4, wherein the first force application part is realized by a local position on an X-shaped combined arm 1, and the second force application part is realized by a first connecting rod component 2; multifunctional structure 3 then realizes the effect of transition between the two, and size and shape control through multifunctional structure 3 can realize when the distance of two application of force parts changes, still guarantee effectual backstop effect to make first application of force part can obtain the bigger arm of force and realize organizing effectual closure through less dynamics, make the second application of force part guarantee sufficient intensity through less length simultaneously, realize stable cutting.

Specifically, the shortening of the distance between the first rotation point 22a and the second rotation point 21a can improve the rigidity of the force transmission rod 22, and the appropriate shortening of the distance between the rotation connection point of the force receiving rod 21 and the force transmission rod 22 and the second rotation point 21a can also achieve the purpose; optimization of the cutting action of the cutting blade 4 can be achieved by increasing the distance between the position of application of the force by the force lever 21 and the second rotation point 21 a.

In the present invention, it is more critical to adjust the distance from the third rotation point 32a to the first fixing point 31a, which is controlled and adjusted by the size of the multifunctional structure 3, so as to ensure that the deformation body can be accurately transformed in two states; under different product models, the same first link assembly 2 can be kept, and the size change of the X-shaped combined arm 1 caused by the model change can be accommodated only by changing the part; more specifically, the size change of the X-shaped combined arm 1 brought by different product models can be accommodated only by the size change of the deformation body 31, so as to ensure the required deformation amount; of course, the multifunctional structure 3 may not be changed, as long as the deformation caused by the X-shaped combined arm 1 can satisfy the requirement for the state change of the stress rod 21.

The X-shaped arm assembly 1 includes four ends, as shown in fig. 3, a first end 11, a second end 12, a third end 13, and a fourth end 14, wherein the first end 11 and the second end 12 can be used for mounting the electrode holder, and the third end 13 and the fourth end 14 can provide a force applying portion for applying force to the human body.

The bottom part of fig. 2 shows the deformation body 31 in an original state, which represents that the deformation does not occur, and the force-bearing rod 21 cannot rotate under the limitation of the shifting block 32, so that no misoperation occurs; the top part of fig. 2 shows the deformation body 31 in a deformed state, and the limitation on the stress rod 21 is released due to the rotation of the shifting block 32, and at this time, the X-shaped combination arm 1 drives the two electrode holders to close, so that the cutting action can be realized by rotating the stress rod 21.

Wherein, the deformation body 31 comprises a main body 31b arranged in the first arm of the X-shaped combination arm 1 and an elastic rod 31c led out towards the cutting blade 4 side relative to the main body 31b, and the elastic rod 31c partially protrudes out of the first arm and is jointed with the second arm of the X-shaped combination arm 1; the main body 31b is fixedly arranged relative to the first arm, and the joint of the main body 31b and the elastic rod 31c is a first fixing point 31 a; the elastic rod 31c achieves the transition of the deformation body 31 from the initial state to the deformed state by deformation.

Through the arrangement of the main body 31b, the whole deformation body 31 can obtain a mounting base relative to the X-shaped combined arm 1, and the base can be changed according to the shape of the X-shaped combined arm, so that better positioning is ensured; wherein the adjustment of the amount of deformation can be achieved by adjusting the resilient lever 31 c.

As a preference of the above embodiment, the second rotation point 21a and the third rotation point 32a are both fixedly connected to the main body 31 b. In the optimized scheme, the main body 31b can be used as the mounting base of the stress rod 21 and the shifting block 32 through the fixed arrangement of the rotating point relative to the main body 31b, so that the structures including the first connecting rod assembly 2 and the multifunctional structure 3 can be preassembled, and the part with the deformation function is arranged as the part led out relative to the main body 31b, which is more favorable for adapting to the size change of the products with different models, on one hand, the mounting difficulty of the whole product can be reduced, on the other hand, the processing difficulty of the X-shaped combined arm 1 can be reduced, and the X-shaped combined arm 1 can be used as the shell structure of the product.

As shown in fig. 6, the second rotation point 21a and the third rotation point 32a are reflected by two axes, both of which can be obtained during the process of integrally molding the main body 31 b.

As a preference of the above embodiment, as shown in fig. 4 and 6, the main body 31b side is provided with a recessed area in which the cutting blade 4, the power transmission lever 22, and the paddle 32 are located. In the optimization scheme, the space utilization rate inside the X-shaped combined arm 1 is improved by further optimizing the main body 31b, which is favorable for cost control of disposable products, and the volume of the products is reduced by a more compact structural form; at the same time, the thickness of the main body 31b is thinned by the arrangement of the recessed area, and the positioning relative to the X-shaped combination arm 1 can be ensured on one hand by the larger thickness part of the edge; alternatively, as a further optimization, the edge of the recessed area provides at least a local position for guiding the cutting blade 4, i.e. the edge serves as other functional part, while in the present preferred solution, the product structure is further optimized by using the edge of the recessed area as a part or all of the position for guiding the cutting blade 4 in a linear motion.

In order to ensure the effective transmission of the movement, a strip-shaped hole 51 is formed in the position, corresponding to the connecting part 5, of the shifting block 32, a guide rod 52 is arranged in the position, corresponding to the connecting part 5, of the shape-changing body 31, and the guide rod 52 is inserted into the strip-shaped hole 51 and attached to the side wall of the strip-shaped hole 51; the axis of the guide rod 52 is perpendicular to the direction of movement of the cutting blade 4.

As shown in fig. 7 and 8, by using the above structure as a specific embodiment of the connecting portion 5, it can be effectively ensured that the deformation body 31 drives the shifting block 32 to rotate in the deformation process, wherein the length range of the strip-shaped hole 51 can be adapted to the deformation state of the deformation body 31, and the situation of jamming between the two is avoided.

As a preference of the above embodiment, as shown in fig. 9 and 10, the force-bearing rod 21 includes a U-shaped section 21b and a stopper section 21 c; the middle part of the U-shaped section 21b is connected with the main body 31b to obtain a second rotation point 21a, and penetrates through the main body 31b so that two ends are respectively positioned at two sides of the main body 31 b; the limiting section 21c is installed in the middle of the U-shaped section 21b and matched with the shifting block.

The purpose of the above arrangement is for three considerations:

on the first hand, a user can apply force more uniformly through two ends of the U-shaped section 21b in the process of linearly cutting the cutting blade 4 by applying force, so that part deformation or damage possibly caused by single-side force application is avoided, and the stability of a product is effectively ensured;

in the second aspect, the stress rod 21 is divided into different parts, so that local replacement and change can be realized; in the application, since the matching relationship exists between the limiting section 21c and the shifting block 32, the shape of the limiting section 21c can be changed to adapt to different shapes of the shifting block 32, so that effective matching is obtained;

in a third aspect, the angle of the limiting section 21c relative to the middle of the U-shaped section 21b is adjustable, and the U-shaped section 21b and the limiting section 21c shown in fig. 2 can form a straight line or a V-shape in the projection direction in the drawing through the adjustment of the two, and the included angle of the V-shape can be adjusted, in this way, at least the following adjustments can be realized: in the case of a certain size and mounting position of the cutting blade 4, the initial position and the travel D of the movement are adjusted; alternatively, the same initial position is obtained for the cutting blade 4 when it changes in length.

As the optimization of the above embodiment, the limiting section 21c is provided with a clamping groove 21c-1, and the limiting section 21c is matched with the local protruding position of the shifting block through the clamping groove 21 c-1. This is the simplest way, as shown in fig. 10, but of course, one or more slots 21c-1 may be provided to accommodate the angle change between the U-shaped section 21b and the stopper section 21 c.

For convenience of processing, it is preferable that the stopper section 21c is a sheet structure, so that the change in size and shape is more easily performed.

As a preferable example of the above embodiment, as shown in fig. 11, the U-shaped section 21b includes a first side 21b-1 and a second side 21b-2 butted in the axial direction of the second rotation point 21a, the first side 21b-1 is provided with a boss in the axial direction, and the second side 21b-2 is provided with a groove for accommodating the boss; the limiting section 21c is sleeved on the boss and clamped by the first side 21b-1 and the second side 21b-2 after being positioned.

The structure mode is convenient for processing the U-shaped section 21b, and the shape is complex, so that the shape stability of each part is easier to control through the split arrangement; secondly, the limiting section 21c is more easily controlled to be in stepless adjustment relative to the angle of the U-shaped section 21b in a hole position sleeving and clamping mode, so that the angle adjusting device is suitable for the change of structures such as the cutting blade 4.

In the implementation process, the main body 31b can be sleeved on the first side 21b-1, so that the U-shaped section 21b can penetrate through the main body 31b, and the positioning of the U-shaped section 21b relative to the main body 31b in the axial direction of the second rotation point 21a can be realized through the step surface on the first side 21b-1 and the limiting section 21 c.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The disposable open type high-frequency electrosurgical closer is characterized by comprising an X-shaped combined arm, a first connecting rod component and a multifunctional structure;

2. The disposable, open high frequency electrosurgical closure according to claim 1, wherein said deformable body comprises a body mounted in a first arm of an X-shaped compound arm, and a resilient bar leading out towards a side of the cutting blade with respect to said body, said resilient bar partially protruding from said first arm to engage a second arm of said X-shaped compound arm;

3. The disposable open high frequency electrosurgical closure according to claim 2, wherein the second and third pivot points are each fixedly connected to the body.

4. The disposable, open, high frequency electrosurgical closure according to claim 3, wherein the body is provided with a recessed area on one side, the cutting blade, dowel and paddle being located within the recessed area.

5. The disposable, open, high frequency electrosurgical closure according to claim 4, wherein the edges of the recessed area provide at least a localized location for guiding the cutting blade.

6. The disposable open high-frequency electrosurgical closer according to any one of claims 1 to 5, wherein a strip-shaped hole is formed in the shifting block at a position corresponding to the connecting part, a guide rod is arranged in the shape-changing body at a position corresponding to the connecting part, and the guide rod is inserted into the strip-shaped hole and attached to the side wall of the strip-shaped hole; the axis of the guide bar is perpendicular to the direction of movement of the cutting blade.

7. The disposable open high frequency electrosurgical closure according to any of claims 2 to 5, wherein the force bar comprises a U-shaped section and a stop section;

8. The disposable open high frequency electrosurgical closure according to claim 7, wherein said retention segment has a slot formed therein, said retention segment engaging said paddle in a partially protruding position thereof.

9. The disposable open high frequency electrosurgical closure according to claim 7, wherein the retention segment is a lamellar structure.

10. The disposable, open high frequency electrosurgical closure according to claim 7, wherein the U-shaped section comprises a first side and a second side that abut along a second pivot point axis, the first side having a boss disposed along the axis, the second side having a slot disposed therein that receives the boss;