Chuck with gasket convenient to replace and ultrasonic cutting hemostasis knife

Abstract

The utility model provides a chuck convenient to replace ultrasonic knife gasket and ultrasonic cutting hemostasis knife, the chuck comprises a chuck body and a gasket, the chuck body is provided with an assembly surface, the assembly surface is provided with at least two buckling parts, and the buckling parts are arranged from one end to the other end along the longitudinal direction of the assembly surface; the gasket is provided with a mounting surface matched with the assembling surface, the mounting surface is provided with a connecting part matched with the buckling part, and the connecting part is assembled on the assembling surface in a sliding manner along one longitudinal side of the assembling surface, so that the gasket is detachably connected with the chuck body. Compared with the prior art, according to the scheme, the connection mode and direction of the gasket and the chuck are changed, so that the connection position of the gasket and the chuck is not matched with other structures, the gasket is convenient to mount and dismount, efficiency is high, and other parts cannot be damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a clamp and an ultrasonic knife which are convenient for replacing gaskets. Background Art

[0002] The blade structure of an ultrasonic cutting hemostat mainly includes a chuck and a cutting blade. The chuck is mainly used to work together with the cutting blade to clamp tissue. In order to increase friction and facilitate clamping tissue, a gasket is usually installed on the chuck, and the soft tissue is cut and coagulated by the joint action of the gasket and the blade. At present, most of the gaskets of ultrasonic knives on the market have a serrated structure on the front side of the gasket, which will contact the blade when in use; the back side of the gasket is a T-shaped structure, which can be inserted into the T-slot of the chuck along the axial direction of the chuck during assembly, and then other components can be assembled on the chuck.

[0003] On this type of chuck, the T-slot is set along the axial direction of the chuck, and other components need to be installed on the chuck: after the ultrasonic knife is assembled, if the gasket is found to be defective, or the gasket is damaged during the assembly process, it will be very complicated to replace the gasket at this time. Basically, the entire set of tools needs to be dismantled and reinstalled, and this process not only wastes time and cost, but may also cause damage to other parts. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a chuck and an ultrasonic knife for facilitating the replacement of gaskets, so as to solve the problem that the chuck on the ultrasonic knife in the prior art is not convenient for replacing gaskets.

[0005] In order to achieve the above-mentioned purpose and other related purposes, the technical solution of the utility model is as follows:

[0006] A chuck for facilitating replacement of ultrasonic knife gaskets, comprising:

[0007] A chuck body, wherein the chuck body is provided with an assembly surface, and the assembly surface is provided with at least two buckling parts, and each of the buckling parts is arranged from one end to the other end along the longitudinal direction of the assembly surface;

[0008] A gasket is provided with a mounting surface that matches the assembly surface, and the mounting surface is provided with a connecting portion that matches the snap-fit ​​portion. The connecting portion is slidably assembled onto the assembly surface along one side of the longitudinal direction of the assembly surface, so that the gasket is detachably connected to the chuck body.

[0009] Optionally, the buckling portion protrudes from the assembly surface, and the connecting portion is recessed in the installation surface; or, the buckling portion is recessed in the assembly surface, and the connecting portion protrudes from the installation surface.

[0010] Optionally, the buckling portion is recessed in the assembly surface, and at least one end of the buckling portion penetrates one side of the assembly surface along the longitudinal direction.

[0011] Optionally, a width of the buckling portion close to the assembly surface is smaller than a width of the buckling portion away from the assembly surface.

[0012] Optionally, the snap-fitting portion is recessed in the assembly surface and at least one end portion extends axially along the assembly surface, the connecting portion protrudes from the mounting surface, and one end of the connecting portion that cooperates with the snap-fitting portion extends axially along the mounting surface.

[0013] Optionally, the buckling portions are spaced and evenly arranged on the assembly surface.

[0014] Optionally, at least two grooves are arranged on the assembly surface along the axial direction, and the grooves and the buckling parts are alternately arranged on the assembly surface.

[0015] Optionally, the groove is arranged close to a side edge of the assembly surface.

[0016] Optionally, the cross-section of the groove is semicircular.

[0017] Correspondingly, the utility model also provides an ultrasonic cutting hemostatic knife, comprising:

[0018] A chuck, a cutting knife and a knife bar for facilitating the replacement of gaskets as described in any of the above items;

[0019] The cutting knife passes through one end of the knife rod, and the chuck is hinged to the end of the knife rod through which the cutting knife passes. The movement of the knife rod drives the chuck to open / close relative to the cutting knife.

[0020] In the present invention, a chuck for convenient replacement of ultrasonic knife gaskets is located on the blade tip structure. When the gasket is installed on the chuck, the chuck is slid and assembled to the buckle part through one side of the chuck, so that the gasket and the chuck are connected as a whole; this makes the connection between the gasket and the chuck fast, and there is no need to cooperate with other parts. The gasket can be replaced at any time after installation, which greatly improves the convenience of gasket installation. Compared with the prior art, the present solution changes the connection mode and direction of the gasket and the chuck so that the connection does not cooperate with other structures, so that the gasket is more convenient and efficient when installing and disassembling, and will not damage other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of an exemplary blade tip structure in the prior art;

[0022] Figure 2 This is a schematic structural diagram of an exemplary chuck for facilitating replacement of gaskets according to the utility model;

[0023] Figure 3 This is a schematic structural diagram of a gasket in a chuck that is convenient for replacing the gasket, which is an exemplary embodiment of the utility model;

[0024] Figure 4 This is a structural schematic diagram of an exemplary assembly process of a chuck for facilitating replacement of gaskets of the utility model;

[0025] Figure 5 The figure is a schematic structural diagram of an exemplary blade tip structure of an ultrasonic scalpel of the present invention.

[0026] The description of the reference numerals in the embodiments includes:

[0027] Gasket 10, working surface 11, mounting surface 12, side surface 13, connecting portion 14, protrusion 15,

[0028] The chuck body 20, the assembly surface 21, the side surface 22, the buckling portion 23, the groove 24,

[0029] Cutting knife 30 and knife bar 31. DETAILED DESCRIPTION

[0030] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0031] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the same reference numerals throughout represent the same components.

[0032] In the present invention, a chuck for facilitating replacement of a gasket is a structural member on an ultrasonic cutting hemostat, wherein the specific structure of the ultrasonic cutting hemostat includes a knife rod 31, a chuck and a cutting knife 30, see Figure 1 and Figure 5As shown, the cutting knife 30 passes through one end of the knife rod 31, the chuck is hinged to the end of the knife rod 31, and a gasket 10 is installed on the side of the chuck opposite to the cutting surface of the cutting knife 30. The gasket 10 cooperates with the cutting surface of the cutting knife 30 to clamp the soft tissue and cut the coagulation. The chuck for facilitating the replacement of the gasket can be any of the following embodiments, which mainly includes a chuck body 20 and a gasket 10, the chuck body 20 has a buckle 23, the gasket 10 is provided with a connecting portion 14 connected and fixed to the buckle 23, and the gasket 10 is located between the cutting knife 30 and the chuck body 20.

[0033] Specifically, the gasket 10 is detachably mounted on the chuck body 20 through the connecting portion 14. The chuck body 20 is hinged to the end of the knife rod. The axial movement of the knife rod 31 drives the chuck body 20 to move axially along the knife rod 31 to open / close the chuck body 20 relative to the cutting knife 30, thereby moving the cutting knife 30 and the gasket 10 away from / closed, thereby releasing / clamping the tissue.

[0034] In one embodiment of the present invention, the specific structure of the chuck is combined with reference to Figures 2 to 5 As shown, it specifically comprises: a chuck body 20, the chuck body 20 is provided with a mounting surface 21 for mounting the gasket 10, the mounting surface 21 is provided with at least two buckling parts 23, and each of the buckling parts 23 is arranged from one end to the other end along the longitudinal direction of the mounting surface 21;

[0035] The gasket 10 is provided with a mounting surface 12 that cooperates with the assembly surface 21, and the mounting surface 12 is provided with a connecting portion 14 that cooperates with the snap-fit ​​portion 23. The connecting portion 14 is slidably assembled onto the assembly surface 21 along one side of the longitudinal direction of the assembly surface 21, so that the gasket 10 is detachably connected to the chuck body 20.

[0036] Among them, the side of the gasket 10 facing the cutting knife 30 is a working surface 11, and the side away from the cutting knife 30 is a mounting surface 12, and the mounting surface 12 is provided with a connecting portion 14; the surface of the gasket 10 located in the radial direction of the cutting knife 30 is a side surface 13, and the surface of the chuck body 20 located in the radial direction of the cutting knife 30 is a side mounting surface 22, and the connecting portion 14 and the snap-fitting portion 23 can be slidably matched along the side mounting surface 22, so that the chuck body 20 and the gasket 10 are connected as a whole.

[0037] In the actual implementation process, when the gasket 10 is installed on the chuck body 20, the connection part 14 is slidably assembled onto the snap-fit ​​part 23 along the side mounting surface 22 of the chuck body 20, so that the gasket 10 and the chuck body 20 are connected as a whole; this makes the connection between the gasket 10 and the chuck body 20 quick and does not require coordination with other components. The gasket 10 can be replaced at any time after installation, which greatly improves the convenience of installing the gasket 10.

[0038] In some embodiments, the buckle portion 23 protrudes from the assembly surface 21, and the connecting portion 14 is recessed in the mounting surface 12; or, the buckle portion 23 is recessed in the assembly surface 21, and the connecting portion 14 protrudes from the mounting surface 12. For example, Figures 2 to 4 As shown, in order to enable the gasket 10 to slide along the side mounting surface 22 and the snap-fit ​​portion 23 of the chuck body 20, the snap-fit ​​portion 23 can be designed to be in the shape of a slide groove or a slide rail; when the snap-fit ​​portion 23 is in the shape of a slide rail, it protrudes from the assembly surface 21, and the corresponding connection portion 14 on the gasket 10 needs to be designed to be in the shape of a slide groove; when the snap-fit ​​portion 23 is in the shape of a slide groove, it is recessed in the assembly surface 21, and the corresponding connection portion 14 on the gasket 10 needs to be designed to be in the shape of a slide rail.

[0039] In some embodiments, the buckle portion 23 is recessed in the assembly surface 21, and at least one end of the buckle portion 23 is connected to one side of the assembly surface 21 along the longitudinal direction. Figures 2 to 4 As shown, the buckle part 23 is arranged along the assembly surface 21, so that the gasket 10 can be slidably assembled from the side 13. In this embodiment, the buckle part 23 is designed as a slide groove and at least one end passes through the side mounting surface 22, and the connecting part 14 is correspondingly designed as a slide rail, which is slidably assembled into the slide groove along the side mounting surface 22 through the slide rail, so that the gasket 10 can be quickly installed on the chuck body 20. In the specific implementation process, the buckle part 23 is designed as a slide groove with both ends respectively passing through the two side mounting surfaces 22. When the gasket 10 is assembled on the chuck body 20, it can be assembled from any side mounting surface 22 on both sides, which can make the gasket 10 more convenient to assemble.

[0040] In some embodiments, the width of the buckle portion 23 close to the assembly surface 21 is smaller than the width of the buckle portion 23 away from the assembly surface 21. For example, Figures 2 to 4 As shown, after the connecting portion 14 and the snap-fitting portion 23 are slidably assembled along the side mounting surface 22, in order to connect and fix the chuck body 20 and the gasket 10, the connecting portion 14 and the snap-fitting portion 23 need to snap-fit ​​with each other after sliding assembly, so the width of the snap-fitting portion 23 away from the mounting surface 21 is greater than the width close to the mounting surface 21.

[0041] In some embodiments, the buckle portion 23 is recessed in the mounting surface 21 and at least one end thereof extends axially along the mounting surface 21, the connecting portion 14 protrudes from the mounting surface 12, and one end of the connecting portion 14 that matches the buckle portion 23 extends axially along the mounting surface 12. For example, Figures 2 to 4As shown, at least one section of the connecting portion 14 and the two ends of the buckle portion 23 is extended to facilitate the assembly process. In addition, the cross section of the buckle portion 23 is T-shaped or trapezoidal, and the T-shaped or trapezoidal shape satisfies the condition that the width of the buckle portion 23 close to the assembly surface 21 is smaller than the width of the buckle portion 23 away from the assembly surface 21, and the T-shaped or trapezoidal structure is simple and easy to process and manufacture.

[0042] In some embodiments, the buckling portions 23 are spaced and evenly arranged on the assembly surface. Figures 2 to 4 As shown, in order to make the connection between the chuck body 20 and the gasket 10 firm and stable, the snap-fitting parts 23 can be set to multiple. In the figure, the snap-fitting parts 23 are set to three, and can also be two, four, five, etc. The number and position of the connecting parts 14 on the gasket 10 correspond to the snap-fitting parts 23.

[0043] In some embodiments, at least two grooves 24 are arranged on the assembly surface 21 along the axial direction, and the grooves 24 and the buckling portions 23 are arranged alternately on the assembly surface 21. For example, Figures 2 to 4 As shown, the groove 24 is arranged along the axial direction of the cutter head 30, and the groove 24 is snap-connected with the gasket 10 along the axial direction of the cutter head 30, and the protrusion 15 on the gasket 10 is arranged corresponding to the groove 24; a protrusion 15 is provided on the mounting surface 12 of the gasket 10, and the position of the protrusion 15 corresponds to the groove 24, after the connecting portion 14 on the gasket 10 slides into the snap-fit ​​portion 23 along the side mounting surface 22, the protrusion 15 is snapped into the groove 24; because the connecting portion 14 and the snap-fit ​​portion 23 may slip out if they are not clamped during sliding assembly, the gasket 10 can be restricted from moving along the side 13 by snap-fitting with the protrusion 15 and the groove 24.

[0044] In some embodiments, the groove 24 is arranged close to one side of the assembly surface 21. For example, Figure 2 , Figure 4 As shown, the groove 24 is arranged in cooperation with the buckling portion 23 , and the groove 24 is close to the assembly surface 21 to facilitate the cooperation between the groove 24 and the protrusion 15 .

[0045] In some embodiments, the cross section of the groove 24 is semicircular. For example, Figures 2 to 4 As shown, the semi-cylindrical structure facilitates the protrusion 15 to be smoothly inserted into the groove 24, and when the gasket 10 is taken out, the protrusion 15 can also be smoothly removed from the groove 24.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A chuck for facilitating replacement of gaskets, characterized in that: include: A chuck body, wherein the chuck body is provided with an assembly surface, and the assembly surface is provided with at least two buckling parts, and each of the buckling parts is arranged from one end to the other end along the longitudinal direction of the assembly surface; A gasket is provided with a mounting surface that matches the assembly surface, and the mounting surface is provided with a connecting portion that matches the snap-fit ​​portion. The connecting portion is slidably assembled onto the assembly surface along one side of the longitudinal direction of the assembly surface, so that the gasket is detachably connected to the chuck body.

2. The chuck for facilitating replacement of gaskets according to claim 1, characterized in that: The buckling portion protrudes from the mounting surface, and the connecting portion is recessed in the mounting surface; or the buckling portion is recessed in the mounting surface, and the connecting portion protrudes from the mounting surface.

3. The chuck for facilitating replacement of gaskets according to claim 2, characterized in that: The buckling portion is recessed in the assembly surface, and at least one end of the buckling portion is connected to one side of the assembly surface along the longitudinal direction.

4. The chuck for facilitating replacement of gaskets according to claim 3, characterized in that: The width of the buckling portion close to the assembly surface is smaller than the width of the buckling portion away from the assembly surface.

5. The chuck for facilitating replacement of gaskets according to claim 1, characterized in that: The buckling portion is recessed in the assembly surface and at least one end portion extends axially along the assembly surface; the connecting portion protrudes from the installation surface, and one end of the connecting portion that matches the buckling portion extends axially along the installation surface.

6. The chuck for facilitating replacement of gaskets according to claim 1, characterized in that: The buckling parts are spaced and evenly arranged on the assembly surface.

7. The chuck for facilitating replacement of gaskets according to claim 1, characterized in that: At least two grooves are arranged on the assembly surface along the axial direction, and the grooves and the buckling parts are arranged alternately on the assembly surface.

8. The chuck for facilitating replacement of gaskets according to claim 7, characterized in that: The groove is arranged close to one side of the assembly surface.

9. The chuck for facilitating replacement of gaskets according to claim 7, characterized in that: The cross section of the groove is semicircular.

10. An ultrasonic cutting hemostatic knife, characterized in that: include: The chuck, cutting knife and knife rod for facilitating the replacement of gaskets according to any one of claims 1 to 9; The cutting knife passes through one end of the knife rod, and the chuck is hinged to the end of the knife rod through which the cutting knife passes. The movement of the knife rod drives the chuck to open / close relative to the cutting knife.

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