CN115607267B - Reusable high-frequency electrosurgical closer - Google Patents
Reusable high-frequency electrosurgical closer Download PDFInfo
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- CN115607267B CN115607267B CN202211295485.2A CN202211295485A CN115607267B CN 115607267 B CN115607267 B CN 115607267B CN 202211295485 A CN202211295485 A CN 202211295485A CN 115607267 B CN115607267 B CN 115607267B
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- rotating shaft
- cross arm
- blade
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- 238000000034 method Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000001125 extrusion Methods 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 8
- 238000013459 approach Methods 0.000 claims description 5
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 description 8
- 230000009471 action Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/2812—Surgical forceps with a single pivotal connection
- A61B17/282—Jaws
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/28—Surgical forceps
- A61B17/285—Surgical forceps combined with cutting implements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/32—Surgical cutting instruments
- A61B17/3209—Incision instruments
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B2018/1452—Probes having pivoting end effectors, e.g. forceps including means for cutting
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B2018/1462—Tweezers
Abstract
The invention relates to the technical field of closers, in particular to a reusable high-frequency electrosurgical closer, which comprises a cutting blade assembly and a stop structure; the cutting blade assembly comprises a swing rod, a connecting rod, a blade and a first reset structure; the stop structure comprises a stress section, a rotating shaft, a stop section and a second reset structure; the stress section extends to the outside of the first cross arm partially in a free state, and is extruded to rotate when the first cross arm and the second cross arm are relatively close to a set distance; the stop section is stopped against one side of the connecting rod facing the extending direction of the blade in a free state and deviates from the stop position after rotation. In the invention, the whole stop structure is positioned at one end of the connecting rod towards the extending direction of the blade and at one side of the blade, so that the extension mode which is the same as the movement direction of the blade is obtained, the high-frequency electrosurgical closer obtains better external dimension through a more compact structural form, and the high-frequency electrosurgical closer is more convenient to use in the actual operation process.
Description
Technical Field
The invention relates to the technical field of closers, in particular to a reusable high-frequency electrosurgical closer.
Background
At present, in order to realize the multifunction of the high-frequency electrosurgical closer, a cutting blade is arranged between two clamping forceps bodies, the power for the two forceps bodies to approach each other and the power for the cutting blade to perform linear cutting are provided through external forces felt at different stress positions on the high-frequency electrosurgical closer.
Safety is one of the important considerations in the use of high frequency electrosurgical closers, and the timing at which the cutting blade extends to perform the cutting action is particularly important, as it is highly likely to cause the user to be cut if it extends before the forceps bodies are not closed. In view of the above, most of the current products have a stopping function, that is, the linear movement of the extension of the cutting blade is limited by a stopping structure before the two forceps bodies are closed.
In reusable high frequency electrosurgical closers, the scissors-like structure is common, with the grip portion at the extreme end of one side to control the closing of the two forceps bodies; in order to reduce the influence on patients, it is more advantageous that the part of the front end of the structure extending into the human body is in an elongated form, but the structure form also causes a narrow installation space, and the structural design of the related components of the cutting blade and the structural design of the stop structure all put requirements on compactness.
Disclosure of Invention
The invention provides a reusable high-frequency electrosurgical closer which effectively meets the requirements set forth in the background art.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a reusable high frequency electrosurgical closer comprising a scissor-type housing structure comprising a first cross arm and a second cross arm;
also included are a cutting blade assembly and a stop structure, both mounted in the first cross arm;
the cutting blade assembly comprises a swing rod, a connecting rod, a blade and a first reset structure;
the middle part of the swing rod is rotatably arranged through a set rotating shaft, the set rotating shaft is rotatably connected with the first cross arm, and the first reset structure provides rotating reset force for the swing rod; the blade moves along a straight line under the limit of the limit structure; the two ends of the connecting rod are respectively and rotatably connected with one end of the blade and one end of the swing rod, and the other end of the swing rod is a force application position of a user;
the stop structure comprises a stress section, a rotating shaft, a stop section and a second reset structure;
the stress section, the rotating shaft and the stop section are fixedly connected into a combined structure and are positioned on one side of the blade, the rotating shaft is rotationally connected with the first cross arm, and the second reset structure provides a rotating reset force for the combined structure; the stress section extends to the outside of the first cross arm partially in a free state, and is extruded to rotate when the first cross arm and the second cross arm are relatively close to a set distance;
the stop section is stopped against the side of the connecting rod or the blade extending towards the blade in the free state, and deviates from a stop position after the stress section rotates.
Further, the rotating shaft is positioned between the stress section and the stop section;
the second reset structure is an elastic rod body fixedly connected with the rotating shaft and is positioned on one side of the stop section and comprises a connecting section and an extrusion section;
the connecting section and the extrusion section are connected into a V-shaped structure, and the opening end of the V-shaped structure faces to one side where the second cross arm is located; the end of the connecting section is fixedly connected with the rotating shaft, the end of the extrusion section is attached to the inner wall of the first cross arm, and the second reset structure deforms under the extrusion of external force to obtain elastic restoring force.
Further, the device also comprises a supporting structure for supporting the tail end of the stop section, wherein the supporting structure comprises a supporting rod and a guide groove;
the guide groove is arranged on the inner wall of the first cross arm;
the support rod is vertically connected with the stop section, and the end part of the support rod is inserted into the guide groove and is attached to the inner wall of the guide groove.
Further, the rotating shaft is positioned at one end of the stress section;
one end of the stop section is connected with the middle part of the stress section and forms a V-shaped included angle with the stress section, and the included angle of the stop section is changed by elastic deformation relatively close to the stress section under external force extrusion;
the second reset structure comprises a rotary guide block and a reset torsion spring;
the rotary guide block is rotationally connected with the first cross arm and is provided with a through hole for the stop section to penetrate and fit with the stop section; the reset torsion spring is sleeved outside the rotating shaft, one end of the reset torsion spring is fixedly connected with the stress section, and the other end of the reset torsion spring is fixedly connected with the first cross arm.
Further, the device also comprises a metal supporting sheet which is arranged in a V shape, is clamped between the stress section and the stop section in a fitting way, and deforms along with the deformation of the stop section.
Further, the connecting rod comprises two side walls and a root section, and the root section is connected with the two side walls;
the blade is arranged between the two side walls, and the root section provides a position propped against the stop section;
the two side walls are respectively connected with the swing rod.
Further, the root section is provided with a retracted position forming a stop surface against which the stop section abuts and a limit surface for limiting the distance between the stop section and the blade.
Further, the swing rod comprises an operation section and a U-shaped section, wherein the operation section provides a force application position of a user and comprises two symmetrically arranged swinging rods;
the two operation sections are respectively positioned at two ends of the setting rotating shaft, one side of an opening of the U-shaped section is rotationally connected with the connecting rod, and the other side of the opening of the U-shaped section is fixedly connected with the setting rotating shaft.
Further, a slot is arranged at the connection position of the operation section and the setting rotating shaft, and the slot is used for axially inserting the end part of the setting rotating shaft and limiting the rotation of the setting rotating shaft relative to the operation section;
an opening is formed in the side wall of the slot, and the depth direction of the opening is perpendicular to the axis direction of the set rotating shaft and penetrates through the local position of the slot;
the end part of the setting rotating shaft is provided with an annular groove which is positioned outside the first cross arm, and the annular groove corresponds to the opening after the setting rotating shaft is inserted into the slot;
the operation section is connected with the setting rotating shaft through an elastic structure clamped in the annular groove, and the elastic structure is respectively attached to two sides of the opening.
Further, a protruding section is arranged in the middle of the setting rotating shaft, a step surface is formed between the protruding section and two sides, and the step surface is attached to the inner wall of the first cross arm;
the U-shaped section is provided with a through hole for the protruding section to penetrate through, and the side wall of the through hole is partially and inwards extended to form a limiting protrusion;
the setting rotating shaft is provided with a sliding groove along the axis direction, and the limiting protrusion is inserted into the sliding groove and is attached to the side wall of the sliding groove.
By the technical scheme of the invention, the following technical effects can be realized:
in the invention, the whole stop structure is positioned at one end of the connecting rod towards the extending direction of the blade and at one side of the blade, so that the same extending mode as the moving direction of the blade is obtained, the requirement of a slender form on the structure is met, the high-frequency electrosurgical closer obtains better external dimension through a more compact structural form, and the high-frequency electrosurgical closer is more convenient to use in the actual operation process; specifically, by sequentially connecting the stress section, the rotating shaft and the stop section in the stop structure, an approximately linear combined structure is obtained, and the combined structure is arranged according to the extending direction of the blade, so that the external dimension of the shell structure can be effectively reduced in this portion.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic view of the structure of a reusable high frequency electrosurgical closer according to the present invention;
FIG. 2 is a schematic illustration of the relative positional relationship of a cutting blade assembly and a stop structure;
FIG. 3 is a schematic view of the mounting of the cutting blade assembly and stop structure within the first cross arm;
FIG. 4 is a schematic view of the structure of the cutting blade assembly;
FIG. 5 is an enlarged view of a portion of FIG. 3 at A;
FIG. 6 is a schematic view of a first construction of a stopper structure;
FIG. 7 is a partial enlarged view at B in FIG. 5;
FIG. 8 is a schematic illustration of the relative positional relationship of a second configuration of a stopper structure and a blade;
FIG. 9 is an exploded view of the stop structure of FIG. 8;
FIG. 10 is a schematic view of the stop structure of FIG. 8 during operation;
FIG. 11 is an enlarged view of a portion of FIG. 8 at E;
FIG. 12 is an enlarged view of a portion of F in FIG. 8;
FIG. 13 is a partial enlarged view at G in FIG. 9;
FIG. 14 is a schematic view of the structure of the operating section;
FIG. 15 is a first schematic view of a partial structure of a swing link connected to a connecting rod;
FIG. 16 is a schematic diagram illustrating the connection of the setting shaft and the first reset structure;
FIG. 17 is an enlarged view of a portion of FIG. 15 at C;
FIG. 18 is a second schematic view of a partial structure of a swing link connected to a connecting rod;
fig. 19 is a partial enlarged view of D in fig. 18;
reference numerals: 1. a cutting blade assembly; 11. swing rod; 11a, an operation section; 11a-1, a slot; 11a-2, an opening; 11b, U-shaped section; 11b-1, limit protrusions; 12. a connecting rod; 12a, sidewalls; 12b, root section; 13. a blade; 14. a first reset structure; 15. setting a rotating shaft; 15a, an annular groove; 15b, step surface; 15c, a chute; 16. an elastic structure; 2. a stop structure; 21. a force-bearing section; 22. a rotating shaft; 23. a stop section; 24. a second reset structure; 24a, a connection section; 24b, an extrusion section; 24c, a reinforcing section; 24d, rotating the guide block; 24e, a reset torsion spring; 24f, metal support sheets; 3. a first cross arm; 4. a second cross arm; 51. a support rod; 52. a guide groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all 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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 7, a reusable high frequency electrosurgical closer includes a scissor-type housing structure including a first cross arm 3 and a second cross arm 4; also included are a cutting blade assembly 1 and a stop structure 2, both mounted in a first cross arm 3; the cutting blade assembly 1 comprises a swing rod 11, a connecting rod 12, a blade 13 and a first reset structure 14; the middle part of the swing rod 11 is rotatably arranged through a setting rotating shaft 15, the setting rotating shaft 15 is rotatably connected with the first cross arm 3, and the first reset structure 14 provides rotating reset force for the swing rod 11; the blade 13 moves along a straight line under the limit of the limit structure; the two ends of the connecting rod 12 are respectively and rotatably connected with one end of the blade 13 and one end of the swing rod 11, and the other end of the swing rod 11 is a force application position of a user; the stop structure 2 comprises a stress section 21, a rotating shaft 22, a stop section 23 and a second reset structure 24; the stress section 21, the rotating shaft 22 and the stop section 23 are fixedly connected into a combined structure, are positioned on one side of the blade 13, the rotating shaft 22 is rotationally connected with the first cross arm 3, and the second reset structure 24 provides a rotating reset force for the combined structure; the force-receiving section 21 extends partially outside the first cross arm 3 in a free state and is pressed to rotate when the first cross arm 3 and the second cross arm 4 are relatively close to a set distance; the stop segment 23 stops against the side of the connecting rod 12 or the blade 13 protruding towards the blade 13 in the free state and deviates from the stop position after rotation.
In the invention, the stop structure 2 is integrally positioned at one end of the connecting rod 12 facing the extending direction of the blade 13 and positioned at one side of the blade 13, so that the same extending mode as the moving direction of the blade 13 is obtained, the requirement of a slender form on the structure is met, the high-frequency electrosurgical closer obtains better external dimension through a more compact structural form, and the high-frequency electrosurgical closer is more convenient to use in the actual operation process.
In the process of designing the cutting blade assembly 1, the cutting blade assembly 1 can be made to be closer to the force application side of the scissor type shell structure, and the force application side is relatively far away from a patient, so that the installation space of the cutting blade assembly 1 can be properly increased, the rigidity of the whole structure of the cutting blade assembly 1 is ensured, and the deformation of the structure caused by repeated operation in the process of repeated use is avoided.
In addition, as for the design of the stop structure 2, the high-frequency electrosurgical closer is closer to a patient in the use process, the installation position and the structural form of the high-frequency electrosurgical closer are improved; in particular, by fixedly connecting the stress section 21, the rotation shaft 22 and the stop section 23 in the stop structure 2, an integrated combined structure is obtained, which is arranged in accordance with the extension direction of the blade 13, so that the outer shape of the housing structure can meet the slim structural requirements in this part.
In the process of switching the stop section 23 between the stop position and the offset stop position, the combined structure can realize the position switching in a smaller rotation range by reducing the joint area with the connecting rod 12, which also reduces the requirement on the structural space of the shell; in addition, in the using process of the reusable high-frequency electrosurgical closer, the force-bearing section 21 of the stop structure 2 is not required to be directly applied, but the stop is synchronously released in the closing process of the two forceps bodies through the approaching of the first cross arm 3 and the second cross arm 4, so that the size requirement on the force-bearing section 21 is further reduced in the structural form.
As a specific embodiment of the first reset structure 14, the first reset structure 14 is a torsion spring, which is sleeved outside the setting shaft 15, one end of the torsion spring is fixedly connected with the shell structure, and the other end of the torsion spring is fixedly connected with the swing rod 11. The torsion spring can select the installation position on the setting rotating shaft 15 according to the specific structural form of the setting rotating shaft 15 in the use process, when one end of the torsion spring is fixedly connected with the shell structure, the other end of the torsion spring can deform in the rotating process of the swinging rod 11 through the fixed connection with the swinging rod 11, and when the external force for driving the swinging rod 11 to rotate is relieved, the swinging rod 11 is driven to reset through the elastic reset force of the torsion spring; through the use of the torsion spring, the difficulty of the high-frequency electrosurgical closer in the repeated use process can be effectively reduced, an operator does not need to carry out the reset process of the swing rod 11, and the process can be automatically realized.
Of course, in the above-mentioned optimization mode, the torsion spring is only one embodiment which saves the structural space, and other reset structures, such as using linear springs at other positions, are also within the protection scope of the present invention.
As a specific embodiment of the stop structure 2, see fig. 5 and 6, the rotation shaft 22 is located intermediate the force-receiving section 21 and the stop section 23; the second reset structure 24 is an elastic rod body fixedly connected with the rotating shaft 22 and is positioned on one side of the stop section 23 and comprises a connecting section 24a and an extruding section 24b; the connecting section 24a and the extruding section 24b are connected into a V-shaped structure, and the opening 11a-2 end of the V-shaped structure faces to the side where the second cross arm 4 is positioned; the end of the connecting section 24a is fixedly connected with the rotating shaft 22, the end of the extruding section 24b is attached to the inner wall of the first cross arm 3, and the second resetting structure 24 deforms under the extrusion of external force to obtain elastic restoring force.
In this preferred scheme, the elastic rod body can realize following form's deformation through V style of calligraphy structural style to obtain elastic restoring force, include at least: the change of the opening degree of the V-shaped opening end, the change of the respective shapes of the connecting section 24a and the pressing section 24b, and the change of the shape of the connecting position between the connecting section 24a and the rotation shaft 22; when at least one position is elastically deformed, the restoring force can be provided after the external force is relieved. The combination structure and the second reset structure 24 may be integrated, and the material may be plastic, or may be embodied by metal, or may be different materials when the above structures are not integrated.
Wherein the pressing section 24b is arranged crosswise to the stop section 23, thereby further reducing the space occupied.
As a preference of the above-described embodiment, the elastic rod body is provided with two symmetrically about the stop section 23 in order to increase the stability of the operation. Wherein, the one end that elasticity body of rod and first cross arm 3 laminating can set up the reinforcing section 24c that the local cross-section is enlarged to this tip takes place comparatively serious deformation effectually, and because far away from axis of rotation 22, and the condition that is difficult to drive its and restore to the throne, through the reinforcing here, can make the deformation of elasticity body of rod take place to being close to more with integrated configuration's hookup location, this is beneficial to the provision of restoring force.
Since the stop segment 23 inevitably generates a pressing force with the connecting rod 12 and has a certain extension length, in order to ensure the stability of the stop segment during the stop process, the stop segment 23 preferably further comprises a supporting structure for supporting the end of the stop segment 23, wherein the supporting structure comprises a supporting rod 51 and a guiding groove 52; the guide groove 52 is arranged on the inner wall of the first cross arm 3; the support rod 51 is vertically connected with the stop section 23, and the end is inserted into the guide groove 52 and is attached to the inner wall of the guide groove 52.
As shown in fig. 7, by limiting the supporting rod 51 by the side wall of the guide groove 52, the stop failure of the stop segment 23 due to the shape change can be effectively avoided when the connecting rod 12 provides the reaction force to the stop segment 23. In this case, the guide groove 52 only has to ensure that the support rod 51 in the stop position is supported, so that it does not have to be oversized, and an open end can be provided in order to facilitate the installation relative to the stop structure 2.
As another specific embodiment of the stop structure 2, as shown in fig. 8 to 13, a rotating shaft 22 is located at one end of the stress section 21; one end of the stop section 23 is connected with the middle part of the stress section 21 and forms a V-shaped included angle with the stress section 21, and under the condition of external force extrusion, the stop section 23 relatively approaches the stress section 21 through elastic deformation to change the included angle; the second return structure 24 includes a rotary guide block 24d and a return torsion spring 24e; the rotary guide block 24d is rotationally connected with the first cross arm 3 and is provided with a through hole for the stop section 23 to penetrate and be attached to the stop section 23; the reset torsion spring 24e is sleeved outside the rotating shaft 22, one end of the reset torsion spring is fixedly connected with the stress section 21, and the other end of the reset torsion spring is fixedly connected with the first cross arm 3.
In this embodiment, the rotation guide block 24d plays an important role in performing and releasing the stopping action, referring to fig. 10, the top part shows the situation that the force-receiving section 21 is not rotated, and the bottom part shows the situation that the force-receiving section 21 is rotated, and as can be seen by comparing the top and bottom, in the case that the axis of the rotation guide block 24d is fixed, it is only rotatable and slidably supports the stopping section 23; when the stressed segment 21 rotates in the process of approaching the first cross arm 3 and the second cross arm 4, the stop segment 23 can approach the stressed segment 21 under the limit of the rotation guide block 24d to obtain elastic restoring force; at the same time, the end of the stop segment 23 approaches the force-receiving segment 31, but is displaced from the corresponding stop position, after which the blade 13 is allowed to be pushed in.
In the above process, the stop section 23 can stably perform the stop action under the restriction of the rotation guide block 24d, and release the stop action; meanwhile, through deformation relative to the stressed segment 21, after the requirement of releasing the stop is met, the reset of the stressed segment 21 can be realized together by matching with the elastic reset force of the reset torsion spring 2424 e; the stop structure 2 with the structural form is simpler in structure and convenient to process, and the two elastic restoring forces realize the restoration of the stress section 21 together, so that the structure is more stable and reliable. Of course, in the above process, when the stop segment 23 is in the stop position, the stopped structure needs to be spaced from it to allow the stop segment 23 to be inserted deeper relative to the rotation guide block 24d during rotation of the force-receiving segment 21.
In order to ensure the effectiveness of resetting, the device also comprises a metal supporting sheet 24f which is arranged in a V shape, is attached and clamped between the stress section 21 and the stop section 23, and deforms along with the deformation of the stop section 23; by the arrangement of the metal supporting sheet 24f, the connection position of the stress section 21 and the stop section 23 can be protected, and the execution of the reset action between the stress section 21 and the stop section 23 can be realized; as shown in fig. 13, a groove may be provided on the fitting surface of the force receiving section 21 while a groove is provided on the metal supporting sheet 24f, and fixation is achieved by inserting the protrusion into the groove.
Preferably, the connecting rod 12 includes two side walls 12a and a root section 12b, the root section 12b connecting the two side walls 12a; the blade 13 is arranged between the two side walls 12a, and the root section 12b provides a position against the stop section 23; the two side walls 12a are respectively connected with the swing rod 11. Referring to fig. 4, the above-mentioned structure is shown, by which the connecting rod 12, the blade 13 and the stopper structure 2 are uniformly stressed, and a stable structure is obtained.
Preferably, the root section 12b is provided with a retracted position forming a stop surface against which the stop section 23 abuts, and a stop surface for limiting the distance between the stop section 23 and the blade 13, so that the rotation angle of the stop structure 2 can be controlled effectively while meeting the stop requirements.
Also for structural stability, as a preference for the above embodiment, referring also to fig. 4, the swing link 11 includes an operating section 11a and a U-shaped section 11b, the operating section 11a providing a force application position for a user and including two symmetrically disposed members; the two operation sections 11a are respectively positioned at two ends of the setting rotating shaft 15, one side of the opening of the U-shaped section 11b is rotationally connected with the connecting rod 12, and the other side is fixedly connected with the setting rotating shaft 15. The symmetrical structure ensures that the structure obtains relative stability, and in this structural form, when the first return structure 14 is a torsion spring, the torsion spring can be mounted in the U-shaped section 11b, thereby obtaining mounting stability.
As a preferred embodiment of the above-mentioned structure, as shown in fig. 14 to 18, a slot 11a-1 is provided at a connection position between the operation section 11a and the setting shaft 15, the slot 11a-1 is used for inserting an end portion of the setting shaft 15 in an axial direction, and the rotation of the setting shaft 15 relative to the operation section 11a is limited; the side wall 12a of the slot 11a-1 is provided with an opening 11a-2, and the depth direction of the opening 11a-2 is perpendicular to the axis direction of the set rotating shaft 15 and penetrates through the local position of the slot 11 a-1; the end part of the setting rotating shaft 15 is provided with an annular groove 15a, and the annular groove 15a is positioned outside the first cross arm 3, and corresponds to the opening 11a-2 after the setting rotating shaft 15 is inserted into the slot 11 a-1; the connection between the operating section 11a and the setting rotating shaft 15 is realized through an elastic structure 16 clamped in the annular groove 15a, and the elastic structure 16 is respectively attached to two sides of the opening 11 a-2.
In the process of installation, since the setting rotating shaft 15 needs to be inserted into the first cross arm 3, in order to reduce the installation difficulty of the two operation sections 11a, the installation outside the shell structure is most convenient, but because the position of the application force is adopted here, the stability of the connection between the operation sections 11a and the setting rotating shaft 15 is more critical, in the prior structure, the connection form exists, but in the process of use, when the operation sections 11a are subjected to certain external force, the situation that the setting rotating shaft 15 falls off easily occurs, in order to avoid the situation, in the preferred mode, the setting of the slot 11a-1 effectively limits the rotation between the setting rotating shaft 15 and the operation sections 11a in a plane, and the section of the slot 11a-1 in the structural form can be realized by supposing that the plane is determined by an X axis and a Y axis, and the end of the setting rotating shaft 15 needs to be bonded with the slot 11a-1 in a proper way; the arrangement of the elastic structure 16 can effectively avoid the connection failure of the operation section 11a relative to the setting rotating shaft 15 in the Z-axis direction; specifically, the elastic structure 16 is clamped in the annular groove 15a, and is effectively attached to the annular groove 15a by elastic restoring force, and meanwhile, due to the limitation of the two sides of the opening 11a-2, the elastic structure 16 can limit the setting shaft 15 to be removed from the slot 11a-1, wherein the elastic structure 16 can be selected to have more forms, a conventional snap spring structure, or a corresponding deformation body and the like, which are also within the protection scope of the present invention.
As shown in fig. 19, a protruding section is provided in the middle of the setting shaft 15, and a step surface 15b is formed between the protruding section and two sides, and the step surface 15b is attached to the inner wall of the first cross arm 3; the U-shaped section 11b is provided with a through hole for the protruding section to penetrate through, and the side wall of the through hole locally extends inwards to form a limiting protrusion 11b-1; the setting rotating shaft 15 is provided with a chute 15c along the axial direction, and the limit projection 11b-1 is inserted into the chute 15c and is attached to the side wall of the chute 15 c.
In the installation process, the whole U-shaped section 11b can be slidably installed to the protruding section through the sliding groove 15c, the setting rotating shaft 15 is limited through the inner wall of the first cross arm 3, the setting rotating shaft 15 is effectively used for transmitting rotating power between the operation section 11a and the U-shaped section 11b through the cooperation between the limiting protrusion 11b-1 and the sliding groove 15c, and the structure is simple to install and convenient to implement.
The foregoing has outlined and described the basic principles, 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, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A reusable high frequency electrosurgical closer comprising a scissor-type housing structure comprising a first cross arm and a second cross arm;
wherein the cutting blade assembly and the stop structure are both mounted in the first cross arm;
the cutting blade assembly comprises a swing rod, a connecting rod, a blade and a first reset structure;
the middle part of the swing rod is rotatably arranged through a set rotating shaft, the set rotating shaft is rotatably connected with the first cross arm, and the first reset structure provides rotating reset force for the swing rod; the blade moves along a straight line under the limit of the limit structure; the two ends of the connecting rod are respectively and rotatably connected with one end of the blade and one end of the swing rod, and the other end of the swing rod is a force application position of a user;
the stop structure comprises a stress section, a rotating shaft, a stop section and a second reset structure;
the stress section, the rotating shaft and the stop section are fixedly connected into a combined structure and are positioned on one side of the blade, the rotating shaft is rotationally connected with the first cross arm, and the second reset structure provides a rotating reset force for the combined structure; the stress section extends to the outside of the first cross arm partially in a free state, and is extruded to rotate when the first cross arm and the second cross arm are relatively close to a set distance;
the stop section is propped against one side of the connecting rod or the blade, which extends towards the blade, in the free state to stop, and deviates from a stop position after the stress section rotates;
the rotating shaft is positioned at one end of the stress section;
one end of the stop section is connected with the middle part of the stress section and forms a V-shaped included angle with the stress section, and the included angle of the stop section is changed by elastic deformation relatively close to the stress section under external force extrusion;
the second reset structure comprises a rotary guide block and a reset torsion spring;
the rotary guide block is rotationally connected with the first cross arm and is provided with a through hole for the stop section to penetrate and fit with the stop section; the reset torsion spring is sleeved outside the rotating shaft, one end of the reset torsion spring is fixedly connected with the stress section, and the other end of the reset torsion spring is fixedly connected with the first cross arm;
when the stressed section rotates in the process of approaching the first cross arm and the second cross arm, the stop section approaches the stressed section under the limit of the rotation guide block to obtain elastic restoring force; meanwhile, the end part of the stop section is close to the stress section and is dislocated with the corresponding stop position, and the blade is allowed to be pushed after dislocation;
the metal support piece is arranged in a V shape, is clamped between the stress section and the stop section in a fitting manner, and deforms along with the deformation of the stop section;
the fitting surface of the stress section is protruded, the groove body is arranged on the metal supporting sheet, and the fixing is realized by inserting the protrusion into the groove body.
2. The reusable high frequency electrosurgical closer according to claim 1, wherein the link comprises two side walls and a root section connecting the two side walls;
the blade is arranged between the two side walls, and the root section provides a position propped against the stop section;
the two side walls are respectively connected with the swing rod.
3. The reusable high frequency electrosurgical closer of claim 2 wherein the root section is provided with a retracted position forming a stop surface against which the stop section abuts and a stop surface for limiting the distance between the stop section and the blade.
4. The reusable high frequency electrosurgical closer of claim 1 wherein the swing link comprises an operating section and a U-shaped section, the operating section providing a force application location for a user and comprising two symmetrically disposed;
the two operation sections are respectively positioned at two ends of the setting rotating shaft, one side of an opening of the U-shaped section is rotationally connected with the connecting rod, and the other side of the opening of the U-shaped section is fixedly connected with the setting rotating shaft.
5. The reusable high frequency electrosurgical closer of claim 4 wherein the connection location of the operative section to the setting shaft is provided with a slot for axial insertion of the setting shaft end and limiting rotation of the setting shaft relative to the operative section;
an opening is formed in the side wall of the slot, and the depth direction of the opening is perpendicular to the axis direction of the set rotating shaft and penetrates through the local position of the slot;
the end part of the setting rotating shaft is provided with an annular groove which is positioned outside the first cross arm, and the annular groove corresponds to the opening after the setting rotating shaft is inserted into the slot;
the operation section is connected with the setting rotating shaft through an elastic structure clamped in the annular groove, and the elastic structure is respectively attached to two sides of the opening.
6. The reusable high frequency electrosurgical closer according to claim 4, wherein a protruding section is provided in the middle of the setting shaft, a step surface is formed between the protruding section and both sides, and the step surface is attached to the inner wall of the first cross arm;
the U-shaped section is provided with a through hole for the protruding section to penetrate through, and the side wall of the through hole is partially and inwards extended to form a limiting protrusion;
the setting rotating shaft is provided with a sliding groove along the axis direction, and the limiting protrusion is inserted into the sliding groove and is attached to the side wall of the sliding groove.
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| CN202211295485.2A CN115607267B (en) | 2022-10-21 | 2022-10-21 | Reusable high-frequency electrosurgical closer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211295485.2A CN115607267B (en) | 2022-10-21 | 2022-10-21 | Reusable high-frequency electrosurgical closer |
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| CN115607267A CN115607267A (en) | 2023-01-17 |
| CN115607267B true CN115607267B (en) | 2024-03-29 |
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| CN115120336A (en) * | 2022-07-05 | 2022-09-30 | 南京首量医疗科技有限公司 | Disposable open type high-frequency electrosurgical closer |
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| CN2229796Y (en) * | 1995-07-07 | 1996-06-26 | 苏州市第二人民医院 | Dill for opening nasal sinuses |
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| CN115607267A (en) | 2023-01-17 |
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