Disclosure of utility model
Based on the above, it is necessary to provide a clamp head driving assembly and an electrosurgical instrument, which aim at the problems that the structure of the electrosurgical closed cutting instrument is complex and the clamp head opening and closing operation is inconvenient.
In a first aspect, the present application provides a clamp head driving assembly, which adopts the following technical scheme:
The clamp head driving assembly is in driving connection with the movable clamp head to adjust the relative position between the movable clamp head and the static clamp head, the clamp head driving assembly comprises a moving part, a connecting part, a driving part and an elastic part, the moving part can move relative to the shell along a first direction, the moving part comprises an opening position, a closing position and a clamping position which are sequentially arranged relative to the shell, the moving part is provided with a sliding groove which extends along the first direction, the connecting part is slidably mounted in the sliding groove and comprises a first position and a last position which are sequentially arranged relative to the shell, the connecting part further comprises a mounting part for mounting the movable clamp head, the driving part is connected with the moving part to drive the moving part to move along the first direction, the elastic part is mounted in the sliding groove and sleeved on the periphery of the connecting part, the elastic part is abutted between the connecting part and the groove wall of the sliding groove, when the moving part is in the opening position, the connecting part is in the clamping position, the connecting part is in the initial position, the clamp head is in the initial position, the connecting part is in the clamping position, the movable clamp head is in the initial position, the first position is in the switching position, the end position is in the closed position, and the clamp position is in the closed position, and the end position is in the clamping position, and is in the closed position, and the position is in the clamping position.
In one embodiment, the connecting piece comprises a pull rod, a fixing sleeve and a rib, the pull rod is slidably mounted in the sliding groove along the first direction, the rib and the mounting portion are arranged at two opposite ends of the pull rod, the fixing sleeve is sleeved on the pull rod and connected with the moving piece, and the elastic piece is sleeved on the periphery of the pull rod and is abutted between the rib and the fixing sleeve.
In one embodiment, the mounting portion is provided with a yielding gap and a clamping groove, the yielding gap penetrates through the end face of one side, away from the pull rod, of the mounting portion, the clamping groove is arranged in the yielding gap and is communicated with the yielding gap, and the clamping groove can rotate the clamp head to be mounted on the mounting portion.
In one embodiment, the clamp head driving assembly further comprises a guide pin, and the guide pin penetrates through the pull rod and the moving piece along the first direction.
In one embodiment, the clamp head driving assembly further comprises a positioning ring and a connecting hoop which are arranged in the sliding groove, wherein the positioning ring is sleeved on the periphery of the pull rod and is fixed on the moving piece by means of the connecting hoop.
In one embodiment, the driving member includes a wrench, a connecting portion and a connecting rod, wherein the wrench includes a swing end of a fixed end arranged at intervals, the fixed end is used for being rotatably mounted on the housing, the swing end can swing around the fixed end, the connecting portion is connected to the moving member, and the connecting rod is rotatably connected between the swing end and the connecting portion.
In one embodiment, the clamp head driving assembly further comprises a reset piece, wherein the reset piece can be abutted between the moving piece and the shell, and pushing force is applied to the moving piece, so that the moving piece keeps a trend of moving towards the opening position.
In one embodiment, the stiffness coefficient of the restoring member is less than the stiffness coefficient of the elastic member.
In one embodiment, the bit drive assembly further comprises a rotating member for coupling to the bit to drive the bit to rotate axially.
In a second aspect, the present application provides an electrosurgical instrument, comprising:
The electrosurgical instrument comprises a handle, a clamp head assembly and the clamp head driving assembly, wherein the handle comprises a shell, the clamp head assembly comprises a clamp rod and a clamp head, the clamp rod is used for connecting the clamp head with the shell, and the clamp head driving assembly is arranged in the shell and is in transmission connection with the clamp rod so as to drive the clamp head to axially rotate or switch between open and close states.
According to the clamp head driving assembly, the movable clamp head is controlled to be opened or closed through the movement of the moving part in the first direction, so that an operator can rapidly switch the opening and closing states of the clamp head through the driving of the driving part in the using process, and convenience in opening and closing control is improved. And because the elastic piece is sleeved on the periphery of the connecting piece, the elastic piece can be compressed to continuously apply pressure to the movable clamp head after the clamp head is closed, so that the stability of clamping operation is improved.
Drawings
Fig. 1 is an overall view of an electrosurgical instrument in accordance with one embodiment of the present application.
Fig. 2 is a schematic structural view of a binding clip assembly and a binding clip driving assembly according to an embodiment of the present application.
Fig. 3 is an exploded view of a head drive assembly according to an embodiment of the present application.
The drawings are marked with the following description:
1. The clamp head driving assembly comprises 11, a moving part, 111, a sliding groove, 12, a connecting part, 121, a mounting part, 1211, a yielding notch, 1212, a clamping groove, 122, a pull rod, 123, a fixing sleeve, 124, a convex edge, 13, a driving part, 131, a spanner, 1311, a fixed end, 1312, a swinging end, 132, a connecting part, 133, a connecting rod, 14, an elastic part, 15, a guide pin, 16, a positioning ring, 17, a connecting hoop, 18, a resetting part, 19, a rotating part, 191, a fixing seat, 192, a knob, 2, a handle, 21, a left half shell, 22, a right half shell, 3, a clamp head assembly, 31, a clamp rod, 32, a clamp head, 321, a static clamp head, 322, a movable clamp head, F1 and a first direction.
Detailed Description
In order that the above objects, features and advantages of the application will be readily understood, a more particular description of the application will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
In the description of the present application, it should be understood that, if any, these terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., are used herein with respect to the orientation or positional relationship shown in the drawings, these terms refer to the orientation or positional relationship for convenience of description and simplicity of description only, and do not indicate or imply that the apparatus or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, they may be fixedly connected, detachably connected or integrally formed, mechanically connected, electrically connected, directly connected or indirectly connected through an intermediate medium, and communicated between two elements or the interaction relationship between two elements unless clearly defined otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present application, unless expressly stated or limited otherwise, the meaning of a first feature being "on" or "off" a second feature, and the like, is that the first and second features are either in direct contact or in indirect contact through an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment. The "first direction" may be the direction of extension of the clamp bar.
Referring to fig. 1 and 2, one embodiment of the present application provides an electrosurgical instrument, which may be specifically an instrument capable of accessing a human body through a tiny wound and cutting and coagulating vascular tissue, the electrosurgical instrument including a jaw assembly 3, a jaw drive assembly 1, and a handle 2. The clamp head driving assembly 1 is arranged in a shell of the handle 2 and is connected with the clamp head assembly 3 in a transmission way, so that the clamp head assembly 3 is controlled to be opened and closed.
Specifically, the clamp head assembly 3 includes a clamp head 32 and a clamp rod 31, the clamp head 32 is disposed at one end of the clamp rod 31 for clamping tissue so as to facilitate coagulation or cutting treatment of the clamped tissue, and the handle 2 is disposed at one end of the clamp rod 31 away from the clamp head 32 for being held by an operator.
In the embodiment of the present application, the clamp head 32 includes a movable clamp head 322 and a static clamp head 321. The clamp lever 31 comprises an inner lever movably connected to the movable clamp head 322, and the movable clamp head 322 is rotatably mounted at one end of the inner lever away from the handle 2. The clamp rod 31 further comprises an outer rod sleeved on the periphery of the inner rod, the static clamp head 321 is fixed at one end of the outer rod far away from the handle 2, and the clamp head driving assembly 1 is installed in the shell and swings relative to the static clamp head 321 through a movement control clamp head 322 of the inner rod in the first direction F1, so as to realize opening and closing control of the clamp head 32.
With continued reference to fig. 2, in some embodiments, the jaw driving assembly 1 includes a moving member 11, a connecting member 12, a driving member 13, and an elastic member 14, wherein the connecting member 12 is slidably connected to the moving member 11 by means of the elastic member 14, and the driving member 13 is configured to drive the moving member 11, the connecting member 12, and the elastic member 14 to move along the first direction F1 so as to drive the jaw 31 to move axially.
Wherein the moving member 11 is configured as a slider having a sliding groove 111 at the top, the moving member 11 includes an open position, a closed position, and a clamping position disposed in this order with respect to the handle 2 along the first direction F1. The connecting piece 12 includes a mounting portion 121 for mounting the inner rod, and the connecting piece 12 can be slidably mounted in the sliding groove 111, so as to drive the inner rod to slide along the first direction F1, thereby realizing the opening and closing control of the clamp head 32. In the first direction F1, the connecting element 12 comprises a first position and a last position, which are arranged in succession with respect to the handle 2. The elastic member 14 is also installed in the sliding groove 111, the connecting member 12 includes a fixing sleeve 123 installed on the moving member 11, and the elastic member 14 is sleeved on the periphery of the connecting member 12 and abuts between the connecting member 12 and the fixing sleeve 123, so as to limit the relative position between the connecting member 12 and the moving member 11, and enable the connecting member 12 to move synchronously with the movement of the moving member 11 before the clamp head 32 is closed.
Specifically, when the driving member 13 does not apply a driving force to the moving member 11, the moving member 11 is in the open position, the connecting member 12 is in the initial position, and the clamp head 32 is opened;
When the driving piece 13 applies a certain driving force to the moving piece 11, the moving piece 11 moves from the opening position to the closing position under the action of the driving force, the connecting piece 12 synchronously moves and reaches the final position under the driving of the moving piece 11, and the movable clamp head 322 is driven to rotate relative to the static clamp head 321 so as to realize the closing of the clamp head 32;
When the driving member 13 continues to apply a driving force to the moving member 11, the moving member 11 is driven by the driving force to move from the closed position to the clamping position, and at this time, the clamp head 32 is in the closed state, so that the inner rod connected to the moving clamp head 322 cannot move continuously, so that the connecting member 12 is limited at the end position, at this time, the moving member 11 moves continuously and compresses the elastic member 14, the elastic member 14 applies a pressure to the connecting member 12, so as to drive the connecting member 12 to move synchronously with the moving member 11, and further, the moving clamp head 322 has a trend of rotating continuously towards the static clamp head 321, and is clamped to the static clamp head 321, so that the tissue can be conveniently coagulated and cut.
Referring to fig. 2, in some embodiments, the clip driving assembly 1 further includes a reset element 18 installed between the moving element 11 and the housing, where the reset element 18 can be abutted between the moving element 11 and the housing, and apply a thrust force to the moving element 11 opposite to the above-mentioned driving force direction, so that the moving element 11 always keeps a moving trend toward the open position, and thus the self-reset function of the moving element 11 is achieved.
In an embodiment of the present application, the return member 18 and the elastic member 14 may be specifically springs. It will be appreciated that, in order to provide the operator with a better handling, the return element 18 may be a spring with a stiffness coefficient smaller than that of the elastic element 14, so as to facilitate the operator to drive the movement of the moving element 11 by means of the driving element 13 more easily.
In addition, in the actual operation process, the stiffness coefficient of the restoring member 18 is smaller, so that the restoring member 18 is not easy to cause excessive obstruction to the movement of the moving member 11, the elastic member 14 has a larger stiffness coefficient, and after the clamp head 32 is closed, the pushing force generated by compression of the elastic member 14 also acts on the moving member 11 and obstructs the movement of the moving member 11, so that an operator can judge the state of the clamp head 32 through the resistance force of the hand holding the handle 2, and the use convenience of the electrosurgical instrument is improved.
Referring to fig. 2 and 3, in some embodiments, the connecting member 12 further includes a pull rod 122 and a rib 124, the pull rod 122 is slidably mounted in the sliding groove 111 along the first direction F1, the mounting portion 121 and the rib 124 are disposed at opposite ends of the pull rod 122, the rib 124 is disposed around a sidewall of the pull rod 122, and the mounting portion 121, the pull rod 122 and the rib 124 are configured as an integrated structure. The fixing sleeve 123 may specifically be a spring limiting sleeve, the fixing sleeve 123 is sleeved at one end of the pull rod 122 near the mounting portion 121 and connected to the moving member 11, the fixing sleeve 123 is slidably connected with the pull rod 122, and the elastic member 14 is sleeved at the periphery of the pull rod 122 and abuts between the fixing sleeve 123 and the protruding edge 124, so as to limit the elastic member 14 axially.
In other embodiments, in order to facilitate assembly, the moving member 11 is provided with a limiting block, and the side wall of the fixed sleeve 123 is provided with a limiting groove along the circumferential direction, so that the limiting block can be embedded into the limiting groove along the second direction, so as to realize rapid assembly. After the assembly is completed, along the first direction F1, the limiting block can be mutually abutted with the groove wall of the limiting groove, so as to realize axial limiting of the fixed sleeve 123.
Further, in some embodiments, the clamp head driving assembly 1 further includes a guide pin 15, where the guide pin 15 is disposed between the pull rod 122 and the moving member 11 along the first direction F1, so that the pull rod 122 can always keep a coaxial state with the moving member 11, thereby implementing a guiding and limiting function for the pull rod 122, so that the pull rod 122 always slides along the first direction F1.
In other embodiments, the clamp head driving assembly 1 further comprises a positioning ring 16 and a connecting hoop 17 disposed in the sliding groove 111, wherein the positioning ring 16 can be mounted on the groove wall of the sliding groove 111 by means of the connecting hoop 17, and the connecting hoop 17 is connected with an external power supply through a wire. In the embodiment of the application, the pull rod 122 can be penetrated through the positioning ring 16 along the first direction F1, and during the movement process of the pull rod 122, the inner ring of the positioning ring 16 can be contacted with the side wall of the pull rod 122, so as to realize the functions of guiding, conducting and limiting the pull rod 122.
In addition, due to the positioning ring 16 and the connecting hoop 17, a certain gap is formed between the pull rod 122 and the groove wall of the sliding groove 111 for the elastic member 14 to be installed, so as to ensure that the pull rod 122 can slide smoothly along the first direction F1 all the time.
With continued reference to fig. 2 and 3, in some embodiments, the driver 13 includes a wrench 131, a connection 132, and a link 133. Specifically, the wrench 131 includes a fixed end 1311 and a swing end 1312, which are arranged at intervals, the fixed end 1311 can be rotatably mounted on the handle 2 by means of a pin, and the swing end 1312 can swing around the fixed end 1311 under the driving force applied by the hand of the operator. The connecting portion 132 is fixed to the movable member 11, and the link 133 is rotatably installed between the swing end 1312 of the wrench 131 and the connecting portion 132.
In the use process, an operator applies an external force to the wrench 131 to drive the swing end 1312 of the wrench 131 to rotate around the fixed end 1311, and drives the connecting portion 132 to move along the first direction F1 through the connecting rod 133, so as to drive the moving member 11 to move along the first direction F1, and further drive the pull rod 122 to move, so as to realize the closing of the clamp head 32. After the clamp head 32 is closed, the operator continues to apply external force to the wrench 131, and the moving member 11 continues to move along the first direction F1 (from the closed position to the clamping position) and compresses the elastic member 14, so that the pull rod 122 further has a tendency to move along the first direction F1, and thus additional pressure is applied to the movable clamp head 322, so as to ensure the clamping stability, so as to perform coagulation and cutting treatment on the tissue.
As shown in connection with fig. 1 and 3, in some embodiments, the head drive assembly 1 further includes a rotating member 19 mounted to the clamp bar 31, the rotating member 19 including a fixing seat 191 fixed to the clamp bar 31 and a knob 192 mounted to the fixing seat 191. In the embodiment of the present application, the fixing seat 191 is clamped to the side wall of the clamp rod 31, and the housing includes a left half shell 21 and a right half shell 22 that can be mutually clamped and matched, where the left half shell 21 and the right half shell 22 are clamped together to the fixing seat 191 to realize axial limiting of the fixing seat 191.
The knob 192 is wrapped around the left half shell 21, the right half shell 22 and the fixing seat 191 and is clamped to the fixing seat 191, and when the operator rotates the knob 192, the fixing seat 191 is driven to rotate, and the clamp rod 31 is further driven to rotate, so as to complete the rotation of the clamp head 32.
Further, in order to meet the requirement of axial rotation of the clamp rod 31, the mounting portion 121 is configured as a round rod-shaped structure coaxially arranged with the pull rod 122, and a yielding gap 1211 and a clamping slot 1212 for connecting the inner rod are formed at one end of the mounting portion 121 away from the pull rod 122. In the embodiment of the present application, the yielding gap 1211 is a "U" shaped gap penetrating through the mounting portion 121 and facing away from the end surface of the pull rod 122, the clamping groove 1212 is disposed in the yielding gap 1211 and is communicated with the yielding gap 1211, and one end of the inner rod, which is far away from the moving clamp head 322, can be rotatably mounted on the mounting portion 121 by means of the clamping groove 1212, so that axial limitation is satisfied and axial rotation can be performed.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the application, which are described in detail and are not to be construed as limiting the scope of the claims. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of protection of the present application is to be determined by the appended claims.