Wrench assembly and ultrasonic blade assembly

Abstract

The utility model relates to a wrench assembly and an ultrasonic blade assembly. The wrench assembly comprises a shell and a transmission part, the shell is provided with a first through hole penetrating in the axial direction, and the transmission part is partially arranged in the first through hole in a sleeved mode. The transmission part comprises a first transmission part and a second transmission part which are arranged in the axial direction, the first transmission part is provided with a first transmission channel, the second transmission part is provided with a second transmission channel, the first transmission channel is communicated with the second transmission channel, and the side, away from the second transmission channel, of the first transmission channel is a channel inlet. The inner diameter of the first transmission channel is larger than that of the second transmission channel. Therefore, according to the wrench assembly and the ultrasonic knife assembly, the universality of the wrench assembly can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a wrench assembly and an ultrasonic knife assembly. Background Art

[0002] An ultrasonic scalpel is an energy surgical device, which usually includes a blade rod and a transducer connected to the blade rod. Its working principle is to convert electrical energy into mechanical energy through the transducer and amplify the amplitude through the blade rod, thereby using the high-frequency vibration and heat of the blade rod to cut tissue and coagulate blood vessels. It has the characteristics of less bleeding, less damage to surrounding tissues, and faster postoperative recovery, and is therefore widely used in clinical practice.

[0003] Ultrasonic scalpels can be divided into scissor-type ultrasonic scalpels and gun-type ultrasonic scalpels based on their structure. Scissor-type ultrasonic scalpels look like scissors, while gun-type ultrasonic scalpels look like a pistol. Usually, the blade head of an ultrasonic scalpel is connected to the transducer through a thread. To ensure stable ultrasound output, the threaded connection between the transducer and the blade head needs to be controlled within a certain torque range. Therefore, each ultrasonic scalpel is equipped with a torque wrench. However, since scissor-type ultrasonic scalpels are divided into long and short versions, and the structural dimensions of the long scissor-type ultrasonic scalpels and the short scissor-type ultrasonic scalpels are quite different, the required torque is different. Each needs to be equipped with a wrench of its own size, which not only has poor versatility but also increases the cost of the product. Utility Model Content

[0004] Based on this, it is necessary to provide a wrench assembly and an ultrasonic knife assembly that can improve the versatility of the wrench assembly.

[0005] In a first aspect, an embodiment of the present application provides a wrench assembly, comprising: a housing and a transmission member, wherein the housing has a first through hole extending axially therethrough, and the transmission member is partially sleeved in the first through hole;

[0006] The transmission member includes a first transmission part and a second transmission part arranged along the axial direction, the first transmission part is provided with a first transmission channel, the second transmission part is provided with a second transmission channel, the first transmission channel and the second transmission channel are connected, the side of the first transmission channel away from the second transmission channel is the channel entrance, and the inner diameter of the first transmission channel is larger than the inner diameter of the second transmission channel.

[0007] In the wrench assembly provided in an embodiment of the present application, the inner diameter of the first transmission channel is larger than the inner diameter of the second transmission channel. The first transmission channel can be used to cooperate with the transmission portion of the first cutter head, thereby enabling installation and removal of the first cutter head and the transducer. Additionally, the second transmission channel can be used to cooperate with the transmission portion of the second cutter head, thereby enabling installation and removal of the second cutter head and the transducer. This makes the wrench assembly compatible with the installation and removal of cutter heads of different sizes, thereby improving the versatility of the wrench assembly.

[0008] In one embodiment, the first transmission channel and the second transmission channel have a first direction and a second direction intersecting the first direction, and the first direction and the second direction are both perpendicular to the axial direction of the housing; wherein,

[0009] The size of the first transmission channel along the first direction is smaller than the size of the first transmission channel along the second direction; and / or the size of the second transmission channel along the first direction is smaller than the size of the second transmission channel along the second direction.

[0010] In one embodiment, an avoidance groove is provided on the inner wall of the second transmission channel along the axial direction, and the avoidance groove is communicated with the first transmission channel.

[0011] In one embodiment, the avoidance groove includes a first avoidance groove and a second avoidance groove; wherein,

[0012] The first avoidance groove is located on one side of the second transmission channel along the first direction, and the first avoidance groove is close to the middle of the second transmission channel along the second direction;

[0013] The second avoidance groove is located at the other side of the second transmission channel along the first direction, and the second avoidance groove is close to the end of the second transmission channel along the second direction.

[0014] In one embodiment, the groove depth of the first avoidance groove is greater than the groove depth of the second avoidance groove;

[0015] And / or, an extension length of the first avoidance groove along the axial direction of the second transmission channel is greater than an extension length of the second avoidance groove along the axial direction of the second transmission channel;

[0016] And / or, an extension length of the first avoidance groove along the axial direction of the second transmission channel is equal to an extension length of the second transmission channel along the axial direction of the second transmission channel.

[0017] In one embodiment, the first transmission channel includes a first sub-channel and a second sub-channel arranged and connected along the second direction, the channel entrance cross-section of the first sub-channel is a plane, and the channel entrance cross-section of the second sub-channel is an inclined surface, the inclined surface includes a first end close to the first sub-channel and a second end away from the first sub-channel, and the second end is inclined relative to the first end in a direction close to the second transmission portion;

[0018] And / or, the inner wall surface of the second transmission channel includes two first side surfaces arranged opposite to each other along the first direction, and two second side surfaces arranged opposite to each other along the second direction, and both the first side surfaces and the second side surfaces are planes;

[0019] And / or, the inner wall surface of the first transmission channel includes two third side surfaces arranged opposite to each other along the first direction, and two fourth side surfaces arranged opposite to each other along the second direction, the third side surface is a plane, the fourth side surface is an arc surface, and the arc surface of the fourth side surface is curved in a direction away from the center of the first transmission channel.

[0020] In one embodiment, a mounting member is provided on a side of the second transmission part facing away from the first transmission part, and a circumferential outer wall surface of the mounting member is in contact with an inner wall surface of the first through hole.

[0021] In one embodiment, the mounting member has a second through hole, the second through hole axially passes through the mounting member, and the second through hole is connected to the second transmission channel;

[0022] And / or, a first abutment member is provided on a side of the mounting member facing away from the second transmission portion, the first abutment member is located in the first through hole, the first abutment member extends axially along the housing, a plurality of second abutment members are provided on an inner wall surface of the first through hole, the plurality of second abutment members are arranged at intervals along the circumference of the first through hole, and the first abutment member is located between two adjacent second abutment members;

[0023] And / or, two first limit members are provided on the side of the mounting member facing away from the second transmission member, and the two first limit members are arranged at intervals in a direction perpendicular to the axial direction of the shell, and the first limit member includes a limit part and a connecting part, and the limit part is located on the side of the connecting part facing away from the mounting member; the inner wall surface of the first through hole is annularly provided with a second limit member, and the second limit member has a third through hole, and the third through hole passes through the second limit member axially, and the third through hole is connected to the first through hole, and the third through hole is sleeved in the connecting part, and the limit part abuts against the side of the second limit member facing away from the mounting member.

[0024] In one embodiment, the first transmission part is located outside the first through hole, the second transmission part is internally inserted into the first through hole, and a third limiting member is provided on the outer wall of the first transmission part facing one end of the second transmission part, and the third limiting member abuts against the end face of the shell facing the first transmission part.

[0025] In a second aspect, an embodiment of the present application provides an ultrasonic scalpel assembly, comprising: a cutter head and the above-mentioned wrench assembly, wherein the wrench assembly is used to drive the cutter head to rotate, the cutter head comprising a first cutter head and a second cutter head, the first cutter head and the second cutter head having different sizes, and both the first cutter head and the second cutter head having a portion to be transmitted, and the wrench assembly is sleeved on the first cutter head or the second cutter head; wherein,

[0026] The first transmission channel acts on the to-be-transmitted portion of the first cutter head to drive the first cutter head to rotate;

[0027] The second transmission channel acts on the to-be-transmitted portion of the second cutter head to drive the second cutter head to rotate.

[0028] The ultrasonic scalpel assembly provided in an embodiment of the present application includes a wrench assembly, wherein the inner diameter of the first transmission channel is larger than the inner diameter of the second transmission channel. The first transmission channel can be used to cooperate with the portion to be transmitted of the first blade head, thereby enabling installation and removal between the first blade head and the transducer. In addition, the second transmission channel can be used to cooperate with the portion to be transmitted of the second blade head, thereby enabling installation and removal between the second blade head and the transducer, so that the wrench assembly can be compatible with the installation and removal of blade heads of different sizes, thereby improving the versatility of the wrench assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the assembly of the wrench assembly provided in an embodiment of the present application.

[0030] Figure 2 A schematic structural diagram of the housing provided in an embodiment of the present application.

[0031] Figure 3 This is a right side view of the housing provided in an embodiment of the present application.

[0032] Figure 4 A schematic structural diagram of the transmission member provided in an embodiment of the present application.

[0033] Figure 5 A cross-sectional view of a transmission member provided in an embodiment of the present application.

[0034] Figure 6 This is a right side view of the transmission member provided in an embodiment of the present application.

[0035] Figure 7 This is a left side view of the transmission member provided in an embodiment of the present application.

[0036] Figure 8 Schematic diagram of the assembly of the wrench assembly and the long blade provided in the embodiment of the present application.

[0037] Figure 9 This is a schematic structural diagram of the long blade provided in an embodiment of the present application.

[0038] Figure 10 Schematic diagram of the assembly of the wrench assembly and the short blade head provided in an embodiment of the present application.

[0039] Figure 11 This is a schematic structural diagram of the short blade head provided in an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 10a, ultrasonic scalpel assembly; 10, blade head; 11, long blade head; 12, short blade head; 13, transmission portion; 100, wrench assembly; 110, housing; 111, first through hole; 120, transmission member; 120a, first transmission portion; 121, first transmission channel; 1211, first sub-channel; 1212, second sub-channel; 120b, second transmission portion; 122, second transmission channel; 123, channel entrance; 124, avoidance groove; 1241, first avoidance groove; 1242 , second avoidance groove; 1251, first side; 1252, second side; 1253, third side; 1254, fourth side; 130, mounting member; 132, second through hole; 141, first abutting member; 142, second abutting member; 151, first limiting member; 1511, limiting portion; 1512, connecting portion; 152, second limiting member; 1523, third through hole; 163, third limiting member; A, first direction; B, second direction; L1, first length; L2, second length. DETAILED DESCRIPTION

[0042] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0043] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0044] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0045] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0046] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0047] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0048] In related technologies, the blade head of an ultrasonic scalpel is connected to the transducer through threads. In order to ensure stable ultrasonic output, the threaded connection between the transducer and the blade head needs to be controlled within a certain torque range. Therefore, each ultrasonic scalpel is equipped with a torque wrench assembly.

[0049] However, the sizes of the long blade head and the short blade head of the ultrasonic scalpel are quite different, and the wrench assembly is also divided into a long wrench assembly and a short wrench assembly. The long wrench assembly is used to install and remove the long blade head, and the short wrench assembly is used to install and remove the short blade head. That is, the same wrench assembly is not compatible with the installation and removal of the long blade head and the short blade head, resulting in poor versatility of the wrench assembly.

[0050] To solve the above problems, an embodiment of the present application provides a wrench assembly and an ultrasonic knife assembly, which can improve the versatility of the wrench assembly.

[0051] The following will be combined Figures 1-11The wrench assembly 100 provided in an embodiment of the present application is described.

[0052] See also Figure 1 The embodiment of the present application provides a wrench assembly 100, which includes a housing 110 and a transmission member 120. The housing 110 is provided with a first through hole 111 ( Figure 2 ), the first through hole 111 is along the axial direction of the shell 110 (i.e. Figure 1 The transmission member 120 is partially inserted into the first through hole 111, and the transmission member 120 can rotate in one direction along the housing 110. A transmission channel is provided in the transmission member 120, and the transmission channel is used to supply the cutter head 10 ( Figure 8 ) is inserted, and the transmission member 120 provides torque to the cutter head 10 through the transmission channel. When the cutter head 10 is connected to the transducer, the transmission member 120 drives the cutter head 10 to rotate by rotating the housing 110.

[0053] For example, see Figure 9 and Figure 11 The cutter head 10 is provided with a portion to be transmitted 13, which cooperates with the transmission channel so that the transmission channel transmits torque to the portion to be transmitted 13, so that the transmission channel can drive the portion to be transmitted 13 to rotate.

[0054] For example, see Figure 4 and Figure 5 The transmission member 120 includes a first transmission portion 120a and a second transmission portion 120b. The first transmission portion 120a and the second transmission portion 120b are arranged along the axial direction of the housing 110. A first transmission channel 121 is provided in the first transmission portion 120a, and a second transmission channel 122 is provided in the second transmission portion 120b. The first transmission channel 121 and the second transmission channel 122 are connected. A channel entrance 123 is provided on the side of the first transmission channel 121 facing away from the second transmission channel 122. The cutter head 10 is inserted into the first transmission channel 121 and the second transmission channel 122 through the channel entrance 123. The first transmission channel 121 and the second transmission channel 122 together form a transmission channel.

[0055] For example, see Figure 5 The inner diameter of the first transmission channel 121 is larger than the inner diameter of the second transmission channel 122. The first transmission channel 121 can be used to communicate with the first cutter head (with Figure 8 The first transmission channel 121 can be used to drive the transmission part 13 of the long blade head 11 to rotate, thereby realizing the installation and removal between the long blade head 11 and the transducer. In addition, the second transmission channel 122 can be used to connect with the second blade head (for example, the long blade head 11). Figure 10The second transmission channel 122 cooperates with the transmission portion 13 of the short blade head 12 (taking the short blade head 12 in the example), that is, the second transmission channel 122 can drive the transmission portion 13 of the short blade head 12 to rotate, thereby realizing the installation and removal between the short blade head 12 and the transducer. Such a configuration makes the wrench assembly 100 compatible with the installation and removal of the long blade head 11 and the short blade head 12, thereby improving the versatility of the wrench assembly 100. In addition, it can also bring convenience to users. There is no need to set up a separate wrench assembly 100 for the short blade head 12 and the long blade head 11, thereby reducing the cost of the product and avoiding the situation where multiple wrench assemblies 100 are easily confused when used. Among them, the sizes of the first blade head and the second blade head are different, and the size of the first blade head can be larger than the size of the second blade head.

[0056] See also Figure 6 , the wrench assembly 100 may have a first direction A and a second direction B, the first direction A and the second direction B intersect, and the first direction A and the second direction B are both perpendicular to the axial direction of the housing 110. For example, the first direction A and the second direction B may be perpendicular to each other. Exemplarily, the first direction A may be the width direction of the wrench assembly 100, and the second direction B may be the height direction of the wrench assembly 100. The width and height in the embodiments of the present application are merely for convenience of description and do not imply any limitation on the size. For example, the width may be greater than, equal to, or less than the height.

[0057] In some embodiments, see Figure 6 The dimension of the first transmission channel 121 along the first direction A is smaller than the dimension of the first transmission channel 121 along the second direction B, which is beneficial to prevent the transmission part 13 of the long blade head 11 from rotating in the first transmission channel 121, so that the first transmission channel 121 can transmit torque to the transmission part 13 of the long blade head 11.

[0058] In some embodiments, see Figure 6 The size of the second transmission channel 122 along the first direction A is smaller than the size of the second transmission channel 122 along the second direction B, which is beneficial to prevent the transmission part 13 of the short blade head 12 from rotating in the second transmission channel 122, so that the second transmission channel 122 can transmit torque to the transmission part 13 of the short blade head 12.

[0059] In some embodiments, see Figure 5 and Figure 6 An avoidance groove 124 is provided in the second transmission portion 120b, the notch of the avoidance groove 124 is located on the inner wall surface of the second transmission channel 122, and the avoidance groove 124 extends along the axial direction of the shell 110. The avoidance groove 124 is connected to the first transmission channel 121, so that when the cutter head 10 is inserted into the first transmission channel 121 and the second transmission channel 122, the bent end portion on the cutter head 10 can be avoided.

[0060] Exemplarily, the end portion of the cutter head 10 facing away from the transducer is bent toward one side of the first direction A to form a bent end portion. The bent end portion of the cutter head 10 can be avoided by the avoidance groove 124 to reduce the difficulty of assembly between the cutter head 10 and the transmission member 120.

[0061] In some embodiments, see Figure 6 The inner wall surface of the second transmission channel 122 includes two first side surfaces 1251 arranged opposite to each other along the first direction A, and two second side surfaces 1252 arranged opposite to each other along the second direction B. The first side surfaces 1251 and the second side surfaces 1252 are both planes, which makes the structure of the first side surfaces 1251 and the second side surfaces 1252 relatively simple, which is conducive to reducing the difficulty of preparing the first side surfaces 1251 and the second side surfaces 1252.

[0062] In some embodiments, see Figure 6 The inner wall surface of the first transmission channel 121 includes two third side surfaces 1253 disposed opposite each other along the first direction A, and two fourth side surfaces 1254 disposed opposite each other along the second direction B. The third side surfaces 1253 are planar, which makes the structure of the third side surfaces 1253 relatively simple, thereby reducing the difficulty of manufacturing the third side surfaces 1253. The fourth side surfaces 1254 are curved surfaces, which are curved away from the center of the first transmission channel 121, thereby increasing the area of the fourth side surfaces 1254. When the cutter head 10 and the transmission member 120 are in the assembled state, the contact area between the fourth side surfaces 1254 and the cutter head 10 is larger, which can improve the stability of the assembly of the transmission member 120 and the cutter head 10.

[0063] In some embodiments, see Figure 6 The avoidance groove 124 includes a first avoidance groove 1241, which is located on one side of the second transmission channel 122 along the first direction A. At this time, the notch of the first avoidance groove 1241 is located on the first side surface 1251. The first side surface 1251 has a larger area than the second side surface 1252, which is conducive to improving the setting flexibility of the first avoidance groove 1241.

[0064] Exemplarily, the first avoidance groove 1241 can be used to avoid the curved end of the long blade head 11. The first avoidance groove 1241 is arranged near the middle of the second transmission channel 122 along the second direction B, which is beneficial to shortening the extension length of the second transmission channel 122 along the second direction B, and is beneficial to reducing the volume and weight of the transmission member 120.

[0065] In some embodiments, see Figure 6The avoidance groove 124 includes a second avoidance groove 1242, which is located on the other side of the second transmission channel 122 along the first direction A. At this time, the notch of the second avoidance groove 1242 is located on the first side surface 1251. The first side surface 1251 has a larger area than the second side surface 1252, which is conducive to improving the setting flexibility of the second avoidance groove 1242. In addition, the first avoidance groove 1241 and the second avoidance groove 1242 are respectively located on both sides of the second transmission channel, thereby avoiding layout interference between the first avoidance groove 1241 and the second avoidance groove 1242.

[0066] Exemplarily, the first avoidance groove 1241 can be used to avoid the curved end of the short blade head 12, and the second avoidance groove 1242 is arranged near the end of the second transmission channel 122 along the second direction B, which is beneficial to limiting the short blade head 12 along the second direction B, and is beneficial to improving the assembly stability between the short blade head 12 and the transmission member 120.

[0067] In some embodiments, the size of the curved end portion of the long blade head 11 along the first direction A may be larger than the size of the curved end portion of the short blade head 12 along the first direction A, and the groove depth of the first avoidance groove 1241 is greater than the groove depth of the second avoidance groove 1242. In this way, the first avoidance groove 1241 is convenient for avoiding the curved end portion of the long blade head 11, and the second avoidance groove 1242 is used to avoid the curved end portion of the short blade head 12.

[0068] Exemplarily, when the long blade head 11 and the transmission member 120 are in an assembled state, the bottom wall of the first avoidance groove 1241 abuts against the curved end portion of the long blade head 11 , thereby limiting the long blade head 11 along the first direction A.

[0069] Exemplarily, when the short blade head 12 and the transmission member 120 are in an assembled state, the bottom wall of the second avoidance groove 1242 abuts against the curved end of the short blade head 12, thereby limiting the short blade head 12 along the first direction A.

[0070] In some embodiments, the axial extension length of the first avoidance groove 1241 along the shell 110 is greater than the axial extension length of the second avoidance groove 1242 along the shell 110, so that the length of the long blade head 11 extending into the first transmission channel 121 and the second transmission channel 122 is longer, which is beneficial to improving the assembly stability between the long blade head 11 and the transmission member 120.

[0071] In some embodiments, the extension length of the first avoidance groove 1241 along the axial direction of the housing 110 is equal to the extension length of the second transmission channel 122 along the axial direction of the housing 110 , thereby reducing the difficulty of preparing the first avoidance groove 1241 .

[0072] In some embodiments, see Figure 1The first transmission channel 121 includes a first sub-channel 1211 and a second sub-channel 1212 that are connected. The first sub-channel 1211 and the second sub-channel 1212 are arranged along the second direction B. The extension length of the first sub-channel 1211 along the axial direction of the housing 110 is a first length L1, and the first length L1 is the same everywhere along the second direction B. The cross-section of the channel entrance 123 of the first sub-channel 1211 is a plane, which makes the shape of the first sub-channel 1211 relatively simple, which can reduce the difficulty of preparing the first sub-channel 1211. The extension length of the second sub-channel 1212 along the axial direction of the housing 110 is a second length L2, and the second length L2 gradually decreases from the first sub-channel 1211 to the second sub-channel 1212. The cross-section of the channel entrance 123 of the second sub-channel 1212 is an inclined surface, which includes a first end close to the first sub-channel 1211 and a second end away from the first sub-channel 1211. The second end is inclined relative to the first end in the direction close to the second transmission part 120b, thereby facilitating the increase of the channel entrance 123 ( Figure 8 ) is beneficial to increasing the length of the cutter head 10 extending into the first transmission channel 121 and the second transmission channel 122, and is also beneficial to increasing the contact area between the transmission member 120 and the cutter head 10 at the channel entrance 123, which is beneficial to improving the assembly stability of the transmission member 120 and the cutter head 10.

[0073] In some embodiments, see Figure 3 and Figure 5 A mounting member 130 is provided on the side of the second transmission part 120b facing away from the first transmission part 120a. The mounting member 130 is located in the first through hole 111. The circumferential outer wall surface of the mounting member 130 is in contact with the inner wall surface of the first through hole 111, which is beneficial to prevent radial movement between the transmission member 120 and the shell 110, and is beneficial to improving the assembly stability between the transmission member 120 and the shell 110.

[0074] In some embodiments, see Figure 5 The mounting member 130 has a second through hole 132, which passes through the mounting member 130 along the axial direction of the shell 110. The second through hole 132 is connected to the second transmission channel 122, which is conducive to reducing the difficulty of integrally forming the mounting member 130 and the second transmission part 120b, the first transmission part 120a, etc. In addition, the situation of the cutter head 10 in the first transmission channel 121 and the second transmission channel 122 can be observed through the second through hole 132.

[0075] In some embodiments, see Figure 3 and Figure 5A first abutment 141 is provided on the side of the mounting member 130 facing away from the second transmission portion 120b. The first abutment 141 is located in the first through-hole 111 and extends axially along the housing 110, thereby forming a cantilever beam structure. This allows the first abutment 141 to elastically deform in a direction away from or toward the inner wall of the first through-hole 111 under the action of an external force. This facilitates the disengagement of the first abutment 141 from the second abutment 142 when the torque exceeds a preset value when tightening the cutter head 10. A plurality of second abutment 142 are provided on the inner wall of the first through-hole 111. The plurality of second abutment 142 are arranged at intervals along the circumference of the first through-hole 111, with a first abutment 141 located between two adjacent second abutment 142. Among them, when the shell 110 is rotated along the first rotation direction, the first abutment member 141 and the second abutment member 142 abut against each other to drive the transmission member 120 to rotate together, and when the torque is greater than a preset value, the first abutment member 141 and the second abutment member 142 disengage, so that the shell 110 can rotate relative to the transmission member 120; when the shell 110 is rotated along the second rotation direction, the first abutment member 141 and the second abutment member 142 remain in abutment against each other, and can continue to transmit torque.

[0076] For example, the number of the second abutting members 142 is 4. The second abutting members 142 can be bar-shaped protrusions, and the number of the first abutting members 141 is 2.

[0077] Exemplarily, when using the wrench assembly 100, the wrench assembly 100 is placed on the cutter head 10 from the front end thereof, and the wrench assembly 100 is moved backward to a position that cooperates with the transmission portion 13, and the cutter head 10 and the transducer can be connected or disconnected. When connecting the cutter head 10 and the transducer, the wrench assembly 100 is rotated in a first rotational direction, thereby driving the cutter head 10 to rotate relative to the transducer, so that the cutter head 10 and the transducer are tightened; and when the torque is greater than a preset value, the first abutment 141 and the second abutment 142 slip off, and continuing to rotate the housing 110 in the first rotational direction will not transmit torque to the cutter head 10, thereby avoiding damage to the instrument due to excessive torque. When disconnecting the cutter head 10 and the transducer, the housing 110 can be rotated in a second rotational direction. Since the first abutment 141 and the second abutment 142 remain in contact, the torque can be continuously transmitted to disconnect the cutter head 10 from the transducer. The first rotation direction and the second rotation direction are opposite to each other. For example, one of the first rotation direction and the second rotation direction is clockwise, and the other is counterclockwise.

[0078] In some embodiments, see Figure 3 and Figure 5Two first limiting members 151 are provided on the side of the mounting member 130 facing away from the second transmission portion 120b. The two first limiting members 151 are spaced apart and arranged along an axial direction perpendicular to the housing 110. The first limiting members 151 extend along the axial direction of the housing 110, thereby forming a cantilever beam structure. These two first limiting members 151 can be elastically deformed under the action of an external force. The first limiting member 151 includes a limiting portion 1511 and a connecting portion 1512. The limiting portion 1511 is located on the side of the connecting portion 1512 facing away from the mounting member 130. A second limiting member 152 is provided around the inner wall of the first through hole 111. The second limiting member 152 is located on the side of the mounting member 130 facing away from the second transmission portion 120b. The second stopper 152 has a third through-hole 1523 extending axially through the second stopper 152 and communicating with the first through-hole 111. The third through-hole 1523 is sleeved around the outside of the connecting portion 1512. The connecting portion 1512 is inserted into the third through-hole 1523, and the stopper 1511 abuts against a side of the second stopper 152 facing away from the mounting member 130. The first and second stoppers 151, 152 cooperate to prevent the housing 110 from moving relative to the transmission member 120 along the direction from the first transmission channel 121 to the second transmission channel 122.

[0079] Among them, the second limiting member 152 divides the first through hole 111 into a first sub-through hole and a second sub-through hole arranged along the axial direction of the shell 110, the first sub-through hole and the second sub-through hole are connected through the third through hole 1523, the second transmission part 120b, the mounting part 130, the first abutment part 141 and the second abutment part 142 are all located in the first sub-through hole, and the limiting part 1511 is located in the second sub-through hole.

[0080] Exemplarily, the size of the third through hole 1523 is smaller than that of the second sub-through hole, and the size of the second sub-through hole may be smaller than that of the first sub-through hole.

[0081] Illustratively, the first abutting member 141 and the second abutting member 142 may be located between the mounting member 130 and the second limiting member 152 .

[0082] In some embodiments, the first transmission portion 120a is located outside the first through hole 111, and the second transmission portion 120b is inserted into the first through hole 111, thereby facilitating shortening the axial dimension of the housing 110. Figure 4 and Figure 8A third stopper 163 is provided around the outer wall of the end of the first transmission portion 120a facing the second transmission portion 120b. The third stopper 163 abuts against the end surface of the housing 110 facing the first transmission portion 120a. The third stopper 163 prevents the housing 110 from moving relative to the transmission member 120 along the direction from the second transmission channel 122 to the first transmission channel 121. Thus, by providing the first stopper 151, the second stopper 152, and the third stopper 163, the housing 110 and the transmission member 120 can be positioned along the axial direction of the housing 110.

[0083] In some embodiments, the end of the first abutting member 141 facing away from the mounting member 130 is spaced apart from the second limiting member 152, thereby preventing the second limiting member 152 from affecting the deformation of the first abutting member 141 under the action of an external force. Alternatively, the end of the first abutting member 141 facing away from the mounting member 130 contacts the second limiting member 152, thereby facilitating the axial positioning of the housing 110 and the transmission member 120 along the housing 110.

[0084] The ultrasonic scalpel assembly 10a provided in an embodiment of the present application is described below.

[0085] An embodiment of the present application provides an ultrasonic scalpel assembly 10a, which includes an ultrasonic scalpel and the wrench assembly 100 in the above embodiment.

[0086] Exemplarily, the ultrasonic scalpel can be a scissor-type ultrasonic scalpel or a gun-type ultrasonic scalpel.

[0087] Exemplarily, the ultrasonic scalpel includes a handle and a scalpel head 10. The handle is used to receive ultrasonic electrical signals and convert the ultrasonic electrical signals into mechanical vibrations. The scalpel head 10 is connected to the handle and is used to transmit mechanical vibrations.

[0088] Exemplarily, the handle includes a housing and a transducer, wherein the transducer is housed in the housing and is used to convert ultrasonic electrical signals into mechanical vibrations. The transducer can be connected to the cutter head 10. The tail end of the cutter head 10 can be threadedly connected to the transducer.

[0089] When the cutter head 10 and the wrench assembly 100 are in an assembled state, the size of the part to be transmitted 13 along the first direction A is smaller than the size of the part to be transmitted 13 along the second direction B, and one of the first transmission channel 121 and the second transmission channel 122 is sleeved on the outside of the part to be transmitted 13 and is used to transmit torque to the part to be transmitted 13 to drive the part to be transmitted 13 to rotate.

[0090] For example, see Figure 5 and Figure 8When the long blade head 11 and the wrench assembly 100 are in the assembled state, the first transmission channel 121 is sleeved on the outer side of the transmission portion 13 of the long blade head 11, and the first transmission channel 121 is used to transmit torque to the transmission portion 13 of the long blade head 11. For example, the transmission portion 13 of the long blade head 11 is moved along the first direction A ( Figure 6 ) is the same as the width of the first transmission channel 121 along the first direction A, so that the first transmission channel 121 cooperates with the transmission portion 13 of the long blade head 11 to apply torque to the long blade head 11, thereby controlling the transmission member 120 and the long blade head 11 to rotate simultaneously.

[0091] Illustratively, when the short blade head 12 and the wrench assembly 100 are assembled, the second transmission channel 122 is sleeved outside the transmission portion 13 of the short blade head 12, and the second transmission channel 122 is used to transmit torque to the transmission portion 13 of the short blade head 12. For example, the width of the transmission portion 13 of the short blade head 12 along the first direction A is the same as the width of the second transmission channel 122 along the first direction A, so that the second transmission channel 122 cooperates with the transmission portion 13 of the short blade head 12 to apply torque to the short blade head 12, thereby controlling the transmission member 120 and the short blade head 12 to rotate simultaneously.

[0092] For example, the cutter head 10 may include a cutter and a cutter bar. When using an ultrasonic cutter, the transducer and the cutter bar of the cutter head 10 need to be threadedly connected. The wrench assembly 100 can be used to control the connection torque between the transducer and the cutter bar. The cutter bar and the cutter can be fixedly connected, and there is no free movement between the cutter bar and the cutter. Therefore, it is only necessary to fix the transmission member 120 and the cutter together, and then control the torque through the wrench assembly 100 to achieve the torque of tightening the thread between the transducer and the cutter bar.

[0093] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0094] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A wrench assembly, characterized in that: The invention comprises: a housing and a transmission member, wherein the housing has a first through hole extending axially therethrough, and the transmission member is partially sleeved in the first through hole; The transmission member includes a first transmission part and a second transmission part arranged along the axial direction, the first transmission part is provided with a first transmission channel, the second transmission part is provided with a second transmission channel, the first transmission channel and the second transmission channel are connected, the side of the first transmission channel facing away from the second transmission channel is a channel entrance, and the inner diameter of the first transmission channel is larger than the inner diameter of the second transmission channel.

2. The wrench assembly according to claim 1, wherein: The first transmission channel and the second transmission channel have a first direction and a second direction intersecting the first direction, and the first direction and the second direction are both perpendicular to the axial direction of the housing; wherein, The size of the first transmission channel along the first direction is smaller than the size of the first transmission channel along the second direction; and / or the size of the second transmission channel along the first direction is smaller than the size of the second transmission channel along the second direction.

3. The wrench assembly according to claim 2, wherein: An avoidance groove is provided on the inner wall of the second transmission channel along the axial direction, and the avoidance groove is communicated with the first transmission channel.

4. The wrench assembly according to claim 3, wherein: The avoidance groove includes a first avoidance groove and a second avoidance groove; wherein, The first avoidance groove is located on one side of the second transmission channel along the first direction, and the first avoidance groove is close to the middle of the second transmission channel along the second direction; The second avoidance groove is located at the other side of the second transmission channel along the first direction, and the second avoidance groove is close to the end of the second transmission channel along the second direction.

5. The wrench assembly according to claim 4, wherein: The groove depth of the first avoidance groove is greater than the groove depth of the second avoidance groove; And / or, an extension length of the first avoidance groove along the axial direction of the second transmission channel is greater than an extension length of the second avoidance groove along the axial direction of the second transmission channel; And / or, an extension length of the first avoidance groove along the axial direction of the second transmission channel is equal to an extension length of the second transmission channel along the axial direction of the second transmission channel.

6. The wrench assembly according to any one of claims 2 to 5, characterized in that: The first transmission channel includes a first sub-channel and a second sub-channel arranged and connected along the second direction, the channel entrance cross-section of the first sub-channel is a plane, and the channel entrance cross-section of the second sub-channel is an inclined surface, the inclined surface includes a first end close to the first sub-channel and a second end away from the first sub-channel, and the second end is inclined relative to the first end in a direction close to the second transmission portion; And / or, the inner wall surface of the second transmission channel includes two first side surfaces arranged opposite to each other along the first direction, and two second side surfaces arranged opposite to each other along the second direction, and both the first side surfaces and the second side surfaces are planes; And / or, the inner wall surface of the first transmission channel includes two third side surfaces arranged opposite to each other along the first direction, and two fourth side surfaces arranged opposite to each other along the second direction, the third side surfaces are planes, the fourth side surfaces are arcuate surfaces, and the arcuate surfaces of the fourth side surfaces are curved in a direction away from the center of the first transmission channel.

7. The wrench assembly according to any one of claims 1 to 5, characterized in that: A mounting piece is provided on a side of the second transmission part facing away from the first transmission part, and a circumferential outer wall surface of the mounting piece is in contact with an inner wall surface of the first through hole.

8. The wrench assembly according to claim 7, wherein: The mounting member has a second through hole, the second through hole axially passes through the mounting member, and the second through hole is connected to the second transmission channel; And / or, a first abutment member is provided on a side of the mounting member facing away from the second transmission portion, the first abutment member is located in the first through hole, the first abutment member extends axially along the housing, a plurality of second abutment members are provided on an inner wall surface of the first through hole, the plurality of second abutment members are arranged at intervals along the circumference of the first through hole, and the first abutment member is located between two adjacent second abutment members; And / or, two first limiting members are provided on the side of the mounting member facing away from the second transmission member, and the two first limiting members are arranged at intervals along a direction perpendicular to the axial direction of the shell, and the first limiting member includes a limiting portion and a connecting portion, and the limiting portion is located on the side of the connecting portion facing away from the mounting member; a second limiting member is provided on the inner wall surface of the first through hole, and the second limiting member has a third through hole, and the third through hole axially penetrates the second limiting member, and the third through hole is connected to the first through hole, and the third through hole is sleeved in the connecting portion, and the limiting portion abuts against the side of the second limiting member facing away from the mounting member.

9. The wrench assembly according to any one of claims 1 to 5, characterized in that: The first transmission part is located outside the first through hole, the second transmission part is internally sleeved in the first through hole, and a third limiting member is provided on the outer wall of the first transmission part facing one end of the second transmission part, and the third limiting member abuts against the end surface of the shell facing the first transmission part.

10. An ultrasonic scalpel assembly, characterized in that: include: A cutter head and a wrench assembly according to any one of claims 1 to 9, wherein the wrench assembly is used to drive the cutter head to rotate, the cutter head includes a first cutter head and a second cutter head, the first cutter head and the second cutter head are different in size, and the first cutter head and the second cutter head both have a portion to be transmitted, and the wrench assembly is sleeved on the first cutter head or the second cutter head; wherein, The first transmission channel acts on the to-be-transmitted portion of the first cutter head to drive the first cutter head to rotate; The second transmission channel acts on the to-be-transmitted portion of the second cutter head to drive the second cutter head to rotate.

Images