Operating handle shell structure and ultrasonic knife with same

Abstract

The operating handle shell structure comprises a first shell body and a second shell body which are oppositely arranged, the outer periphery of the inner end face of one of the first shell body and the second shell body is provided with at least one connecting groove in the circumferential direction, and the connecting groove extends in the circumferential direction of the connecting groove and is recessed inwards. The outer periphery of the inner end face of the other one of the first shell and the second shell is provided with a plurality of balance weight connecting protrusions at intervals in the circumferential direction, the balance weight connecting protrusions extend in the circumferential direction of the other one of the first shell and the second shell and protrude outwards, the first shell and the second shell are connected into a whole in an inserted mode through the balance weight connecting protrusions and the connecting grooves, and any connecting groove corresponds to one or more balance weight connecting protrusions. The depth of any connecting groove is not smaller than the outward protruding and extending height of the corresponding counterweight connecting protrusion, the extending length of any connecting groove in the circumferential direction is not smaller than the extending length of all the counterweight connecting protrusions in the connecting groove in the circumferential direction, and the width of any connecting groove is consistent with the thickness of the corresponding counterweight connecting protrusion. During assembly, alignment is convenient, simplicity and labor saving are achieved, and the fitting degree is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical instrument technical field, concretely relates to a kind of operating handle shell structure and the ultrasonic knife with it. BACKGROUND

[0002] Ultrasonic surgical knife is a kind of high-frequency electric surgical equipment, which is mainly used for cutting and blood vessel closure operation of biological tissue, by transducer to convert electric energy into mechanical energy, then through amplitude amplifier to amplify amplitude and transmit to knife head to cut tissue and coagulate blood, mainly using mechanical impact, cavitation effect and thermal effect generated by high frequency vibration, with less bleeding, less damage to surrounding tissue, faster postoperative recovery and other characteristics, it acts on human tissue to play the role of cutting and coagulation, and does not cause side effects such as tissue dryness and burn, and there is no electric current through human body when knife head works, and it has a wide application in operating room, and is called bloodless surgical knife.

[0003] Ultrasonic knife mainly includes ultrasonic generator, transducer, handle and knife rod assembly, transmission assembly is arranged in handle to transmit opening and closing movement of handle to knife rod assembly.The existing handle for ultrasonic knife, in long-term use, operator often feedbacks that closing operation is laborious, and hand fatigue is caused by long-time hand holding and other problems, which not only affects the operation efficiency, but also increases the risk of occupational injury of medical staff.Above all, it is particularly important to develop an ultrasonic knife shell structure which can not only ensure the accuracy of operation, but also reduce the burden of operator.

[0004] The Chinese patent document No. CN209136791U discloses an ultrasonic knife handle and an ultrasonic knife. The ultrasonic knife handle comprises a shell, a fixed handle arranged on the shell, a rotating handle arranged opposite to the fixed handle and rotationally connected with the shell, a gear transmission assembly arranged in the shell, and a knife rod fixing mechanism meshed with an output end of the gear transmission assembly. The gear transmission assembly comprises a first gear and a second gear meshed with each other. The first gear is meshed with the rotating handle, and the second gear is meshed with the knife rod fixing mechanism. The rotating handle comprises a trigger and a first rack. The first rack is provided with a first tooth structure. The first rack is meshed with a side portion of the first gear. The shell comprises a first shell and a second shell. A plurality of clamping columns are arranged on an inner wall of the first shell. A plurality of clamping holes are arranged on an inner wall of the second shell in correspondence. The first shell and the second shell are buckled by the clamping columns and the clamping holes. The ultrasonic knife handle of the above technical solution can realize the movement precision and stability of the transmission process by using the gear transmission assembly instead of the existing connecting rod transmission assembly. However, a plurality of gears are needed to mesh and drive the gear rack. The structure is relatively complex. Moreover, the gear transmission structure of the gear rack and the gear will be worn after long-term use. The wear will affect the movement precision and stability. In addition, the gear rack and the gear transmission assembly are prone to gear jamming during use, which makes the operation more laborious. On the other hand, the shell is assembled by the clamping columns and the clamping holes. The aperture of the clamping hole is small. Especially when the number of clamping columns and clamping holes is large, it is difficult to align during assembly, which causes inconvenience in assembly. In addition, the clamping columns and the clamping holes need to be buckled during assembly. The clamping columns are prone to breakage and / or the clamping holes are prone to damage during buckling, which causes a large gap and poor fit between the first shell and the second shell, and further causes the disinfectant to enter the inside of the shell and affect the internal gear rack and gear transmission assembly. Therefore, the utility model comes from this. Technical content

[0005] In view of the above technical problems, the utility model aims to provide an operating handle shell structure and an ultrasonic knife with the same, which is labor-saving, has a good experience, is comfortable to operate, and effectively improves the operation experience during surgery.

[0006] The technical scheme of the utility model is as follows:

[0007] The utility model discloses a purpose lies in providing a kind of operating handle shell structure and the ultrasonic knife with it, including oppositely arranged first shell and second shell, the first shell and second shell inside are limited to the mounting space for knife lever assembly, transmission assembly and trigger installation, the outer periphery of the inner end surface of one of the first shell and second shell is provided with at least one along its circumferential direction and recessed inwardly connecting groove extending along its circumferential direction, the outer periphery of the inner end surface of the other of the first shell and second shell is spaced apart and provided with a plurality of along its circumferential direction and outwardly protruding counterweight connecting protrusions extending along its circumferential direction, the first shell and second shell are integrally connected by the counterweight connecting protrusion and the connecting groove plug-in connection, and any connecting groove corresponds one or more counterweight connecting protrusions, the depth of any connecting groove is not less than the height of the counterweight connecting protrusion outwardly protruding and extending, and the length of any connecting groove extending along the circumferential direction is not less than the length of all counterweight connecting protrusions extending along the circumferential direction in it and the width of any connecting groove is consistent with the thickness of the corresponding counterweight connecting protrusion.

[0008] Preferably, the number of connecting grooves is at least two, and the lengths of the at least two connecting grooves extending along the circumferential direction are different.

[0009] Preferably, the lengths of the plurality of counterweight connecting protrusions extending along the circumferential direction are different; and / or

[0010] The heights of all counterweight connecting protrusions outwardly protruding and extending are consistent.

[0011] Preferably, at least one side of the outer end thickness direction of any counterweight connecting protrusion is an inclined surface inclined toward the other side, or an integrated guide structure with a length less than the length of the counterweight connecting protrusion extending along the circumferential direction and a triangular cross section is formed on the outer end surface of any counterweight connecting protrusion.

[0012] Preferably, the first shell and the second shell each include an axial portion with an extension direction parallel to the axis direction of the knife lever assembly and a gripping portion integrally formed at one end of the axial portion and at an angle with the axial portion for a user to hold with hands, and an avoidance opening for the trigger to be movably arranged is formed on one side of the gripping portion.

[0013] Preferably, the trigger comprises a first trigger body arranged outside the first and second housings and a second trigger body arranged inside the first and second housings and connected with the first trigger body at one end and connected with a first horizontal rotating shaft fixed between the first and second housings and perpendicular to the axis of the blade rod assembly at the other end, the second trigger body comprises two parts arranged at an angle and one of the two parts is connected with the first trigger body and the other part is connected with the first horizontal rotating shaft, the transmission assembly comprises a sliding block sliding along the axis of the blade rod assembly inside the first and second housings and a connecting rod connected with one end of the sliding block rotatably and connected with the second trigger body rotatably at the other end, the connecting rod is connected between the two parts of the second trigger body, one end of the connecting rod is hinged with the sliding block through a second horizontal rotating shaft with an axis parallel to the first horizontal rotating shaft and the other end is hinged with the second trigger body through a third horizontal rotating shaft with an axis parallel to the first horizontal rotating shaft, and one end of the sliding block is connected with the blade rod assembly.

[0014] Preferably, a limiting sliding groove with an extending direction parallel to the sliding direction of the sliding block is arranged on the inner end face of the first and second housings respectively, and the sliding block is slidingly connected with the two limiting sliding grooves through a sliding shaft with an axis parallel to the first horizontal rotating shaft.

[0015] Preferably, a limiting stopper is further arranged on the inner end face of the first and second housings at one end of the sliding direction of the sliding block, and a biasing member is arranged between the limiting stopper and the sliding block, and the biasing member applies a biasing force to the sliding block to reset the sliding block.

[0016] Preferably, the outer surface of the holding part is wrapped with a flexible wrapping layer; and / or the outer surface of the holding part is provided with anti-skid texture.

[0017] Another purpose of the utility model provides a kind of ultrasonic knife, including operating handle, blade rod assembly and transducer, the operating handle includes the operating handle shell structure described in any one of the above, the blade rod assembly is connected with the transmission assembly, and the transducer is arranged at one end of the operating handle and is connected with the input end of the blade rod assembly.

[0018] Compared with the prior art, the utility model has the advantages that:

[0019] The utility model discloses an operating handle shell structure and ultrasonic knife with same, first casing and second casing are connected with counterweight connecting protrusion by the connecting groove of outer periphery setting and insert, because the connecting groove is along the circumferential extension, and any connecting groove corresponds one or more counterweight connecting protrusion, and when assembling, the alignment is very convenient, and assembling is very simple and laborsaving, and the counterweight connecting protrusion can reduce the difference and gap, and the fit between first casing and second casing is better after assembling. The hinge type transmission structure is used to replace the gear and rack type transmission structure, and the structure is more simple and practical, can reduce the physical burden of user in the operation operation. The curved surface design of ergonomics is adopted to the holding part and increases the flexible wrapping layer, and the operation feeling and overall use experience are improved. Not only improve the operation efficiency, also fully embodies the humanistic care of the professional health of medical workers. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further described below in combination with the drawings and examples:

[0021] Figure 1 It is the partial explosion (drive assembly and trigger is not exploded) structural diagram of operating handle shell structure of the utility model embodiment;

[0022] Figure 2 It is the internal end face of the first casing of operating handle shell structure in Figure 1 The structure schematic diagram of forward;

[0023] Figure 3 It is the partial enlarged view of A part in Figure 2 The structure schematic diagram of forward;

[0024] Figure 4 It is the internal end face of the second casing of operating handle shell structure in Figure 1 The structure schematic diagram of forward;

[0025] Figure 5 It is the partial enlarged view of B part in Figure 4 The structure schematic diagram of forward;

[0026] Figure 6 It is the structure schematic diagram of operating handle shell structure (omits trigger) of the utility model embodiment;

[0027] Figure 7 It is the structure schematic diagram of drive assembly of operating handle shell structure of the utility model embodiment;

[0028] Figure 8 It is the structure schematic diagram of trigger of operating handle shell structure of the utility model embodiment.

[0029] Wherein: 10, first shell; 101, first axial part; 102, first holding part; 11, connecting groove; 20, second shell; 201, second axial part; 202, second holding part; 21, counterweight connecting protrusion; 22, guide structure; 30, transmission assembly; 31, sliding block; 311, connecting block; 32, connecting rod; 33, second horizontal rotating shaft; 34, sliding shaft; 40, trigger; 41, first trigger body; 42, second trigger body; 421, first rotating shaft hole; 422, second rotating shaft hole; 50, biasing member; 60, fixing column; 61, first horizontal rotating shaft; 70, limiting sliding slot; 80, avoiding opening; 90, limiting stopper. DETAILED DESCRIPTION

[0030] To make the purpose, technical scheme and advantages of the present application more clear and understandable, the present application will be further described in detail below with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.

[0031] Referring to Figures 1 to 8The utility model discloses an operating handle shell structure, including two relative connection as one's casing, in order to convenient for description and distinction, two casing are respectively described first casing 10 and second casing 20, and the mounting space for knife bar assembly (not shown), transmission assembly 30 (not shown) and trigger 40 installation is defined between first casing 10 and second casing 20, it needs to be explained that the knife bar assembly is not all also namely partial specifically only input end part is placed in the mounting space defined in first casing 10 and second casing 20. For the knife bar assembly, its specific structure is not described and limited in detail, for the conventional ultrasonic knife's knife bar assembly, such as Chinese patent literature number CN 210044088 U and the prior art mentioned in background art are all recorded and described. The outer periphery of the inner end face of one of first casing 10 and second casing 20, that is, the outer periphery of the face facing each other after the assembly of first casing 10 and second casing 20, is provided with at least one connecting groove 11 extending along the circumference and recessed inward along the circumference. The outer periphery of the inner end face of the other of first casing 10 and second casing 20 is provided with a plurality of counterweight connecting protrusions 21 extending along the circumference and protruding outward along the circumference at intervals. First casing 10 and second casing 20 are connected as one by the plug-in connection of the counterweight connecting protrusions 21 and the connecting grooves 11, and each connecting groove 11 corresponds to a plurality of counterweight connecting protrusions 21. The depth of each connecting groove 11 is not less than the height of the outward protruding extension of the corresponding counterweight connecting protrusion 21, and the length of the extension along the circumference of each connecting groove 11 is not less than the length of the extension along the circumference of all the counterweight blocks inside it. The width of each connecting groove 11 is consistent with the thickness of the corresponding counterweight connecting protrusion 21. In the utility model embodiment, first casing 10 and second casing 20 are connected by the plug-in connection of the connecting grooves 11 and the counterweight connecting protrusions 21 provided on the outer periphery. Since the connecting grooves 11 extend along the circumference, and each connecting groove 11 corresponds to one or more counterweight connecting protrusions 21, that is, the length of the connecting groove 11 is greater than or equal to the length of all the counterweight connecting protrusions 21 inside it. This design makes it very convenient to align and very simple and labor-saving to assemble. The width of the counterweight connecting protrusions 21 matches the width of the connecting grooves 11, and the depth of the connecting grooves 11 is not less than the height of the counterweight connecting protrusions 21. The connecting grooves 11 can completely contain the counterweight connecting protrusions 21. The provision of the counterweight connecting protrusions 21 can reduce the gap and clearance, and the fit between first casing 10 and second casing 20 after assembly is good. It should be noted that the counterweight connecting protrusions 21 of the utility model embodiment can be integrally formed as a one-piece structure with the corresponding casing by one-piece injection molding, or can be combined together in a split structure by injection molding, or can be combined together in a split structure by interference assembly, or can be combined together by an adhesive. The specific material of the counterweight connecting protrusions 21 is not described or limited, and is preferably a material with a certain hardness and deformation ability, so as to ensure the connection strength while being adapted to the connecting grooves 11.

[0032] According to some preferred embodiments of the utility model, taking the example of the inner end face outer periphery of the first shell 10 being provided with the connecting grooves 11 and the inner end face outer periphery of the second shell 20 being provided with the counterweight connecting protrusions 21, the number of the connecting grooves 11 is at least two, such as three, four and the like, and the specific number is not limited. That is to say, the plurality of connecting grooves 11 are arranged at intervals along the inner end face outer periphery of the first shell 10. For the length of the plurality of connecting grooves 11, specifically, the length of each connecting groove 11 extending along the outer periphery of the first shell 10, in an optional embodiment, the lengths of the plurality of connecting grooves 11 are not the same. For example, in the utility model embodiment, the first shell 10 and the second shell 20 each include an axial portion extending in a direction parallel to the axis direction of the cutter bar assembly, that is, horizontally as shown in Figure 2 and Figure 4 The first shell 10 and the second shell 20 also include a holding portion at an angle (the specific angle is not limited, such as 60° and the like) to the axial direction. In order to facilitate the distinction, the axial portion and the holding portion of the first shell 10 are respectively denoted as the first axial portion 101 and the first holding portion 102 in the utility model embodiment, and the axial portion and the holding portion of the second shell 20 are respectively denoted as the second axial portion 201 and the second holding portion 202. One side surface of the first holding portion 102 and the second holding portion 202, that is, the side surface of the first holding portion 102 and the second holding portion 202 facing away from the first axial portion 101 and the second axial portion 201, is provided with the counterweight connecting protrusions 21. Figure 6The left side surface is provided with a through avoiding opening 80, which is arranged for the movement of the trigger 40. For example, the outer periphery of the upper and lower sides of the first axial portion 101 is respectively provided with a connecting groove 11, and the outer periphery of the left and right sides of the first holding portion 102 is respectively provided with a connecting groove 11; or the outer periphery of the first axial portion 101 is provided with a continuous first connecting groove 11, and the outer periphery of the first holding portion 102 is provided with a continuous connecting groove 11. The number of counterweight connecting protrusions 21 in each connecting groove 11 is not particularly limited, and for example, the upper side of the outer periphery of the second axial portion 201 is substantially at the same horizontal line and only needs to be connected with the holding portion, so that a long configuration connecting block 311 can be arranged, which is convenient for connection and processing. The lower side of the outer periphery of the second axial portion 201 needs to be connected with the second holding portion 202 and is interrupted, and the lower side of the outer periphery of the first axial portion 101 needs to be connected with the first holding portion 102 and is not a straight line but has a plurality of curved portions, so that a plurality of spaced counterweight connecting protrusions 21 in a connecting groove 11 can be arranged, that is, a plurality of spaced connecting grooves 11 and a plurality of spaced counterweight connecting protrusions 21 can be arranged on the lower sides of the outer peripheries of the first axial portion 101 and the second axial portion 201, respectively. Similarly, the first holding portion 102 and the second holding portion 202 adopt a more ergonomic design, that is, the side surface of the holding portion is a curved surface with a curvature, so that a plurality of spaced counterweight connecting protrusions 21 in a connecting groove 11 can also be arranged, that is, a plurality of spaced connecting grooves 11 can be arranged on the outer periphery of the first holding portion 102, and a plurality of spaced counterweight connecting protrusions 21 can be arranged on the outer periphery of the second holding portion 202. Thus, the problem of inconvenient installation and difficulty caused by the arrangement of a complete counterweight connecting protrusion 21 in a curved structure of the connecting groove 11 is solved. In an alternative embodiment, the inner end surface of the first shell 10 can also be provided with only one connecting groove 11, and of course, due to the arrangement of the trigger 40, the connecting groove 11 is not connected at both ends, but is terminated at both sides of the avoiding opening 80 arranged by the trigger 40.

[0033] The height of the outward protruding extension of the counterweight connecting protrusion 21 is not particularly limited, and all the counterweight connecting protrusions 21 can have the same height, or can not be completely consistent or completely inconsistent, but the highest height is less than or equal to, that is, not greater than the depth of the connecting groove 11. In the embodiment of the present application, the height of all the counterweight connecting protrusions 21 outwardly protruding is consistent, which is convenient for processing. The length of the circumferential extension of the plurality of counterweight connecting protrusions 21 is not particularly limited, and is preferably inconsistent, which is mainly flexibly set according to the extension length of the connecting groove 11.

[0034] According to some preferred embodiments of the present application, for example, Figure 5As shown, the outer end surface of any counterweight connecting protrusion 21 is integrally formed with a guide structure 22 having a triangular cross section and a length less than the circumferential extension of the counterweight connecting protrusion 21. As an alternative embodiment, at least one side surface of the outer end of any counterweight connecting protrusion 21 is a bevel surface inclined toward the other side surface, preferably both side surfaces are bevel surfaces, that is, the outer end of the counterweight connecting protrusion 21 is triangular. This design facilitates installation and orientation, and makes assembly easier.

[0035] For the trigger 40, as shown in Figure 1 and Figure 8 The trigger 40 of the utility model embodiment comprises two parts, one part is a first trigger body 41 outside the first shell 10 and the second shell 20, and the other part is a second trigger body 42 arranged in the mounting space inside the first shell 10 and the second shell 20, and the first plate body and the second plate body are connected in a hinged manner. The first trigger body 41 is preferably made of flexible material such as rubber material, which increases the touch feeling, and the second trigger body 42 is made of hard material such as metal material. The first trigger body 41 is exemplarily a reverse U-shaped structural member with an outside length less than an inside length, and the second trigger body 42 is exemplarily a substantially reverse L-shaped structural member, that is, the second trigger body 42 comprises two parts arranged at an angle (substantially 90°). The lower left end of the second trigger body 42 is connected with the first trigger body 41, and the upper left end of the second trigger body 42 is rotationally connected with a first horizontal rotating shaft 61 arranged between the first shell 10 and the second shell 20 and perpendicular to the axis of the cutter bar assembly, as shown in Figure 8 The upper left end of the second trigger body 42 is provided with a first rotating shaft hole 421 connected with the first horizontal rotating shaft 61. As shown in Figure 2 and Figure 4 The inner end surface of the first shell 10 and the second shell 20 is further provided with a fixed column 60 for fixing the two ends of the first horizontal rotating shaft 61.

[0036] For the transmission assembly 30, as shown in Figure 1 and Figure 8 The transmission assembly 30 of the utility model embodiment comprises two hingedly connected parts, one part is a sliding block 31 parallel to the axis direction of the cutter bar assembly, and the other part is a connecting rod 32 rotationally connected such as hinged with one end of the sliding block 31 and rotationally connected such as hinged with the connection part of the two parts of the second trigger 40. The sliding block 31 is arranged between the first shell 10 and the second shell 20 in the horizontal direction of the cutter bar assembly, that is, as shown in Figure 2 or Figure 4 The end of the sliding block 31 away from the rotationally connected end of the connecting rod 32 is also arranged between the first shell 10 and the second shell 20 in the horizontal direction of the cutter bar assembly, that is, as shown in Figure 7The left end shown protrudes upwardly and extends a U-shaped connecting block 311, which is used to be connected with the tool bar assembly, and the slide block 31 is slid by operating the trigger 40, so that the cutter head of the execution end of the tool bar assembly is closed or opened. Figure 7 The right end shown is hinged, and the lower end of the connecting rod 32 is hinged at the connecting position of the two parts of the second trigger 40 at an angle through a third horizontal shaft parallel to the first horizontal shaft 61. Figure 8 As shown, the two parts of the second trigger 40 are also hinged between them. Figure 8 As shown, the upper end of the second plate body is provided with a second shaft hole 422 for rotating connection of the third horizontal shaft. The hinge type transmission structure is used to replace the gear and rack type transmission structure in the background art, and the structure is simpler and more practical, which can reduce the physical burden of the user in the operation

[0037] According to some preferred embodiments of the utility model, Figure 2 and Figure 4 As shown, the inner end faces of the first shell 10 and the second shell 20 are also respectively provided with a limiting sliding groove 70 extending horizontally, and the limiting sliding groove 70 is arranged on one side of the fixed column 60. Figure 2 or Figure 4 As shown, the limiting sliding groove 70 is arranged on one side of the fixed column 60, and the slide block 31 is also provided with a slide shaft 34 having an axis parallel to the axis of the first horizontal shaft 61. The two ends of the slide shaft 34 respectively protrude out of the two sides of the slide block 31, so as to be respectively connected with the limiting sliding grooves 70 arranged on the first shell 10 and the second shell 20. Through the arrangement of the slide shaft 34 and the limiting sliding groove 70, the straightness of the movement of the transmission assembly 30 can be ensured, so as to ensure the movement precision and stability.

[0038] According to some preferred embodiments of the utility model, Figure 2 and Figure 4 As shown, the inner end faces of the first shell 10 and the second shell 20 located at one end in the sliding direction of the slide block 31 are also provided with a limiting stopper 90, and the limiting stopper 90 and the fixed column 60 are arranged on both sides in the extension direction of the limiting sliding groove 70. A biasing member 50 is arranged between the limiting stopper 90 and the slide block 31, and the biasing member 50 applies a biasing force to the slide block 31 to reset it, so that the trigger 40 can be reset outwardly. As shown, Figure 7As shown, the end of the slider 31 hinged with the connecting rod 32 is provided with an outward protruding abutting convex part (not marked), one end of the biasing member 50 abuts on the abutting convex part, and the other end directly abuts on the limiting stop. That is, when the trigger 40 is controlled to shrink into the mounting space of the first shell 10 and the second shell 20, the slider 31 moves towards the side of the biasing member 50 and compresses the biasing member 50, the cutter head of the cutter bar assembly is closed, and then after the trigger 40 is released, the slider 31 moves towards the direction away from the biasing member 50 under the biasing force of the biasing member 50, and drives the trigger 40 to extend outwardly and reset. For the biasing member 50, a spring is preferred.

[0039] It should be noted that, in the embodiments of the utility model, the fixed column 60 on the first shell 10 and the fixed column 60 on the second shell 20 are oppositely arranged, the limiting sliding groove 70 on the first shell 10 and the limiting sliding groove 70 on the second shell 20 are oppositely arranged, and the limiting stopper 90 on the first shell 10 and the limiting stopper 90 on the second shell 20 are oppositely arranged.

[0040] According to some preferred embodiments of the utility model, the outer surface of the holding part is wrapped with a flexible wrapping layer (not shown). The flexible wrapping layer can be made of rubber material. The holding part adopts a curved surface design conforming to human engineering and increases the flexible wrapping layer, thereby improving the operation feeling and overall use experience, and even if held for a long time, hand fatigue will not be caused, and the comprehensive operation experience of the surgical knife is significantly improved. In another preferred embodiment, the outer surface of the holding part is provided with anti-skid texture (not shown). The friction is improved, and the gripping stability is improved.

[0041] The utility model embodiment further provides an ultrasonic knife, including operation handle, cutter bar assembly and transducer, operation handle includes the operation handle shell structure of above-mentioned embodiment, cutter bar assembly with transmission assembly 30 specifically is the connecting block 311 on slider 31 is connected, transducer (not shown) is located in one end of operation handle and is connected with the input end of cutter bar assembly. Since the operation handle shell structure of above-mentioned embodiment is included, at least the beneficial effects of the operation handle shell structure of above-mentioned embodiment are possessed, which will not be repeated here.

[0042] It should be understood that the above specific embodiments of the utility model are only used for illustrative or explanatory purposes of the principle of the utility model, and do not constitute the limitation of the utility model. Therefore, any modification, equivalent replacement, improvement, etc. made without deviating from the spirit and scope of the utility model shall be included in the protection scope of the utility model. In addition, the appended claims of the utility model are intended to cover all changes and modifications falling within the scope and boundary of the appended claims, or the equivalent forms of such scope and boundary.

Claims

1. A control handle housing structure, characterized in that, The system includes a first housing and a second housing disposed opposite to each other. The interior of the first housing and the second housing defines an installation space for mounting a tool holder assembly, a transmission assembly, and a trigger. The outer periphery of the inner end face of one of the first housing and the second housing is provided with at least one circumferentially extending and inwardly recessed connecting groove. The outer periphery of the inner end face of the other housing is provided with a plurality of circumferentially extending and outwardly protruding counterweight connecting protrusions at intervals along its circumference. The first housing and the second housing are integrally connected to the connecting groove through the counterweight connecting protrusions, and each connecting groove corresponds to one or more counterweight connecting protrusions. The depth of each connecting groove is not less than the outwardly protruding height of its corresponding counterweight connecting protrusion, and the circumferentially extending length of each connecting groove is not less than the circumferentially extending length of all the counterweight connecting protrusions within it. The width of each connecting groove is consistent with the thickness of its corresponding counterweight connecting protrusion.

2. The operating handle housing structure according to claim 1, characterized in that, The number of the connecting grooves is at least two, and the lengths of the at least two connecting grooves extending circumferentially are different.

3. The operating handle housing structure according to claim 1, characterized in that, The lengths of the multiple counterweight connecting protrusions extending circumferentially are not equal; and / or All the counterweight connection protrusions extend outwards to the same height.

4. The operating handle housing structure according to any one of claims 1-3, characterized in that, At least one side of the outer end of any of the counterweight connecting protrusions in the thickness direction is an inclined surface that slopes toward the other side, or a guide structure with a length less than the length of the counterweight connecting protrusion extending circumferentially and a triangular cross-section is integrally formed on the outer end surface of any of the counterweight connecting protrusions.

5. The operating handle housing structure according to claim 1, characterized in that, Both the first housing and the second housing include an axial portion extending parallel to the axis of the tool holder assembly and a grip portion integrally formed at one end of the axial portion and at an angle to the axial portion for the user's hand to grasp. A clearance opening is provided on one side of the grip portion for the trigger to move.

6. The operating handle housing structure according to claim 1 or 5, characterized in that, The trigger includes a first lever body disposed outside the first housing and the second housing, and a second lever body disposed inside the first housing and the second housing, one end of which is connected to the first lever body and the other end of which is connected to a first horizontal rotating shaft whose axis is fixed between the first housing and the second housing and is perpendicular to the axis of the knife bar assembly. The second lever body includes two parts arranged at an included angle, one part of which is connected to the first lever body and the other part of which is connected to the first horizontal rotating shaft. The transmission assembly includes a slider that slides along the axial direction of the tool holder assembly within the first housing and the second housing, and a connecting rod whose one end is rotatably connected to one end of the slider and whose other end is rotatably connected to the second wrench body. The connecting rod is rotatably connected between the two parts of the second wrench body. One end of the connecting rod is hinged to the slider via a second horizontal rotating shaft whose axis is parallel to the first horizontal rotating shaft, and the other end is hinged to the second wrench body via a third horizontal rotating shaft whose axis is parallel to the first horizontal rotating shaft. One end of the slider is connected to the tool holder assembly.

7. The operating handle housing structure according to claim 6, characterized in that, Limiting grooves extending in a direction parallel to the sliding direction of the slider are respectively provided on the inner end faces of the first housing and the second housing. The slider is slidably connected to the two limiting grooves through a sliding shaft with an axis parallel to the first horizontal rotating shaft.

8. The operating handle housing structure according to claim 7, characterized in that, A limiting block is provided at one end of the inner end face of the first housing and the second housing located in the sliding direction of the slider. A biasing member is provided between the limiting block and the slider, and the biasing member applies a biasing force to the slider to reset it.

9. The operating handle housing structure according to claim 5, characterized in that, The outer surface of the grip is covered with a flexible wrapping layer; and / or the outer surface of the grip is provided with an anti-slip texture.

10. An ultrasonic scalpel, comprising an operating handle, a scalpel assembly, and a transducer, characterized in that, The operating handle includes the operating handle housing structure as described in any one of claims 1-9, the tool bar assembly is connected to the transmission assembly, and the transducer is disposed at one end of the operating handle and connected to the input end of the tool bar assembly.

Images