Ultrasonic osteotome

Abstract

The ultrasonic osteotome comprises a shell, an energy converter, a cutter and a heat conduction piece, the energy converter is installed in the shell and connected with the cutter, and the heat conduction piece is arranged between the energy converter and the shell so that heat generated when the energy converter works can be conducted to the shell through the heat conduction piece; wherein a first liquid cooling channel for a cooling medium to flow in is formed in the shell, and the first liquid cooling channel extends from the near end of the shell to the far end of the shell. Thus, effective heat dissipation of the energy converter and the cutter can be achieved, the using performance stability of the energy converter and the cutter is improved, meanwhile, the comfort of an operator holding the shell to conduct an operation is improved, and the ultrasonic osteotome can be suitable for long-time operation work.

Description

Technical Field

[0001] The present invention belongs to the technical field related to medical devices, and in particular relates to an ultrasonic osteotome. Background Art

[0002] Ultrasonic bone knife is a medical device that uses the principle of high-intensity focused ultrasound (cavitation effect, thermal effect, mechanical effect) to perform bone surgery.

[0003] Among them, the transducer is an important component of the ultrasonic bone knife, which is used to connect the bone knife. When the transducer is working, it can drive the bone knife to move and enable the bone knife to perform bone surgery. At present, the existing ultrasonic bone knife is limited by size specifications and cannot dissipate heat from the transducer and the bone knife at the same time. When the ultrasonic bone knife is working, the transducer will generate a lot of heat. Since the heat cannot be discharged in time, the working performance of the transducer will be unstable, or even overheated and damaged. At the same time, the operator will feel uncomfortable holding the hand due to the overheating of the transducer, so that the operator cannot use the ultrasonic bone knife for surgery for a long time. Summary of the invention

[0004] In view of this, it is necessary to provide an ultrasonic osteotome for solving the above-mentioned technical problems.

[0005] An ultrasonic bone cutter comprises a housing, a transducer, a cutter and a heat conductor, wherein the transducer is installed in the housing and connected to the cutter, and the heat conductor is arranged between the transducer and the housing, so that the heat generated by the transducer when working can be conducted to the housing through the heat conductor;

[0006] A first liquid cooling channel for cooling medium to flow into is formed on the shell, and the first liquid cooling channel extends from the proximal end of the shell to the distal end of the shell.

[0007] It can be understood that the heat generated by the transducer when it is working can be conducted to the shell through the heat conductor, and exchange heat with the cooling medium conducted in the first liquid cooling channel on the shell. At the same time, the cooling medium can also directly contact the tool when flowing to the tool, and dissipate the heat of the tool. In this way, effective heat dissipation of the transducer and the tool can be achieved, and the stability of the performance of the transducer and the tool can be improved. At the same time, it also improves the comfort of the operator when holding the shell for surgery, so that the ultrasonic bone knife can be suitable for long-term surgical operations.

[0008] In one embodiment, the first liquid cooling channel comprises a transducer liquid cooling channel, and the transducer liquid cooling channel covers an outer area of ​​the transducer;

[0009] The transducer liquid cooling channel includes a plurality of sub-channels.

[0010] In one embodiment, a plurality of said sub-channels are arranged at intervals around said transducer;

[0011] Wherein, the sub-channel is configured as a linear channel, or the sub-channel is configured as a spiral channel.

[0012] In one embodiment, the ultrasonic bone knife further includes a diverter, which is capable of diverting the cooling medium introduced into the shell into the plurality of sub-channels.

[0013] It can be understood that the cooling medium introduced into the shell is distributed by using a diverter, so that the cooling medium can be conducted in multiple sub-channels without being affected by the different orientations of the ultrasonic bone knife when being held by the operator and performing surgery. This can improve the uniformity of heat dissipation of the transducer.

[0014] In one embodiment, the shell includes an inner cylinder, an outer cylinder and a plurality of connecting ribs, and the inner cylinder and the outer cylinder are connected by the plurality of connecting ribs;

[0015] Wherein, the sub-channel is formed between two adjacent connecting ribs and the inner cylinder and the outer cylinder.

[0016] In one embodiment, the ultrasonic bone knife further comprises a protective cover, which is sleeved on the knife and connected to the housing;

[0017] A second liquid cooling channel is formed between the protective shell and the tool along the thickness direction of the tool, and the second liquid cooling channel is communicated with the first liquid cooling channel.

[0018] It is understandable that a protective shell is provided on the tool, so that the cooling medium discharged from the first liquid cooling channel can be guided to flow to the tool and achieve effective heat dissipation of the tool, thereby improving the heat dissipation effect of the tool.

[0019] In one embodiment, the shell includes an inner cylinder and an outer cylinder, and the first liquid cooling channel is formed between the inner cylinder and the outer cylinder;

[0020] The protective shell includes an outer protective shell and an inner protective shell, the outer protective shell is connected to the outer cylinder, one end of the inner protective shell is sealingly connected to the inner cylinder, and the other end of the inner protective shell is sealingly matched with the tool; wherein, the extension length of the inner protective shell is smaller than the extension length of the outer protective shell, and a preset gap is formed between the inner protective shell and the outer protective shell along the thickness direction of the tool.

[0021] It can be understood that the inner protective shell is used to assemble and seal the inner cylinder on the shell and the tool, so that the cooling medium conducted in the second liquid cooling channel can be prevented from entering between the transducer and the shell, which can meet the operating requirements of the transducer.

[0022] In one embodiment, the inner protective shell includes a protective inner sleeve and a sealing member, and the protective inner sleeve is detachably connected to the inner cylinder;

[0023] The sealing member is arranged on the inner side of the protective inner sleeve and is interference fit with the tool, so that the protective inner sleeve and the tool are assembled and sealed.

[0024] In one of the embodiments, the ultrasonic bone knife further includes a connecting rear cover, which is disposed on an end of the shell away from the knife and connected to the shell.

[0025] In one of the embodiments, a liquid inlet channel is provided on the connection back cover or the shell, and the liquid inlet channel is connected to the first liquid cooling channel.

[0026] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0027] The ultrasonic bone knife for which protection is sought in the present invention can generate heat when the transducer is in operation, which can be conducted to the shell through the heat conductor, and exchange heat with the cooling medium conducted in the first liquid cooling channel on the shell. At the same time, the cooling medium can also directly contact the tool when flowing to the tool, and dissipate the heat of the tool. In this way, effective heat dissipation of the transducer and the tool can be achieved, and the stability of the performance of the transducer and the tool can be improved. At the same time, the comfort of the operator holding the shell for surgery is improved, so that the ultrasonic bone knife can be suitable for long-term surgical operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the structure of an ultrasonic osteotome provided in one embodiment of the present application;

[0030] Figure 2 A cross-sectional view of an ultrasonic osteotome provided in one embodiment of the present application;

[0031] Figure 3 for Figure 2 Enlarged view of the middle P part;

[0032] Figure 4 A schematic diagram of a partial structure of an ultrasonic osteotome provided in an embodiment of the present application, wherein the osteotome and the protective cover are removed;

[0033] Figure 5 for Figure 4 A cross-sectional view of

[0034] Figure 6 It is a cross-sectional view of the shell in this application.

[0035] : 100, ultrasonic bone knife; 10, shell; 11, inner cylinder; 12, outer cylinder; 13, connecting ribs; 20, transducer; 30, tool; 40, heat conductor; 50, protective shell; 51, outer protective shell; 52, inner protective shell; 521, protective inner sleeve; 522, sealing member; 523, clamping ring; 70, connecting back cover; 81, suction tube; 82, liquid inlet tube; 821, liquid inlet channel; 83, cable connector; 101, first liquid cooling channel; 1011, sub-channel; 102, second liquid cooling channel; 110, suction channel; 201, flexible support member. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that when an element is referred to as being "provided on" another element, it may be directly provided on the other element or there may be a central element. When an element is considered to be "provided on" another element, it may be directly provided on the other element or there may be a central element at the same time. When an element is considered to be "fixed to" another element, it may be directly fixed to the other element or there may be a central element at the same time.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] like Figure 1 , Figure 2As shown, an ultrasonic bone cutter 100 provided in an embodiment of the present application includes a housing 10, a transducer 20, a cutter 30 and a heat conductor 40. The transducer 20 is installed in the housing 10 and connected to the cutter 30. The heat conductor 40 is arranged between the transducer 20 and the housing 10 so that the heat generated by the transducer 20 during operation can be conducted to the housing 10 through the heat conductor 40. A first liquid cooling channel 101 is formed on the housing 10 for the cooling medium to flow into. The first liquid cooling channel 101 extends from the proximal end of the housing 10 to the distal end of the housing 10. It should be noted that the proximal end of the housing 10 specifically refers to an end close to the cutter 30, and the distal end of the housing 10 refers to an end away from the cutter 30.

[0040] As can be seen from the above, when the ultrasonic bone knife 100 is working, the heat generated by the transducer 20 when working can be conducted to the housing 10 through the heat conductor 40, and heat exchange is performed with the cooling medium conducted in the first liquid cooling channel 101 on the housing 10. At the same time, when the cooling medium flows to the cutter 30, it can also directly contact the cutter 30 and dissipate heat for the cutter 30. In this way, effective heat dissipation of the transducer 20 and the cutter 30 can be achieved, and the stability of the performance of the transducer 20 and the cutter 30 can be improved. At the same time, the comfort of the operator holding the housing 10 for surgery is also improved, so that the ultrasonic bone knife 100 can be suitable for long-term surgical operations. Here, when the ultrasonic bone knife 100 is used to perform surgery on a patient, the cooling medium conducted in the ultrasonic bone knife 100 can be specifically set to physiological saline, and when the ultrasonic bone knife 100 is used to perform surgery on an inanimate object such as a specimen, the cooling medium conducted in the ultrasonic bone knife 100 can be set to distilled water, tap water, etc., which will not be elaborated here.

[0041] like Figure 2 , Figure 5 As shown, in some embodiments, the first liquid cooling channel 101 includes a transducer liquid cooling channel, and the transducer liquid cooling channel covers the outer area of ​​the transducer 20, wherein the transducer liquid cooling channel includes a plurality of sub-channels 1011; for example, the plurality of sub-channels 1011 are arranged on the housing 10 at the location of the heat conductor 40. That is to say, when the ultrasonic osteotome 100 is working, the cooling medium conducted in the sub-channel 1011 is used to cool the heat conducted from the heat conductor 40 to the housing 10, and the purpose of heat dissipation of the transducer 20 is achieved.

[0042] like Figure 6As shown, illustratively, a plurality of sub-channels 1011 are arranged at intervals around the transducer 20; wherein the sub-channels 1011 are arranged as straight channels, or the sub-channels 1011 are arranged as spiral channels. It should be noted that the spiral sub-channels 1011 can prolong the residence time of the cooling medium when passing through the sub-channels 1011 compared with the straight sub-channels 1011, and can enable the cooling medium to flow circumferentially around the outer side of the transducer 20, so that the heat dissipation effect on each circumferential part of the transducer 20 is more uniform, which can improve the cooling effect of the cooling medium when cooling the heat conducted to the housing 10 by the heat-conducting member 40 from the transducer 20, and can further improve the heat dissipation uniformity, that is, it has the effect of further improving the heat dissipation efficiency of the transducer 20 when the ultrasonic bone knife 100 is working.

[0043] In some embodiments, the ultrasonic bone knife 100 further includes a flow divider (not shown), which can divide the cooling medium introduced into the housing 10 into multiple sub-channels 1011. In this way, the cooling medium can be conducted in multiple sub-channels 1011 without being affected by the different orientations of the ultrasonic bone knife 100, which can improve the uniformity of heat dissipation when the transducer 20 dissipates heat. It should be noted that the above-mentioned flow divider can be specifically set as an annular groove provided on the housing 10, or it can be a flow control member independently provided from the housing 10, wherein the flow control member is respectively connected to each sub-channel 1011, and the structural characteristics of the flow control member are used to realize the flow control of the cooling medium in the multiple sub-channels 1011. Preferably, the flow control member can realize uniform distribution of the cooling medium when working.

[0044] like Figure 6 As shown, in some embodiments, the shell 10 includes an inner cylinder 11, an outer cylinder 12 and a plurality of connecting ribs 13, and the inner cylinder 11 and the outer cylinder 12 are connected by a plurality of connecting ribs 13; wherein, a sub-channel 1011 is formed between two adjacent connecting ribs 13 and the inner cylinder 11 and the outer cylinder 12. It should be noted that the connecting ribs 13 can be specifically arranged at the position where the sub-channel 1011 is located, and the inner cylinder 11 and the outer cylinder 12 extend toward the direction of the tool 30 relative to the connecting ribs 13. Of course, in order to facilitate the overall production and preparation of the shell 10, the inner cylinder 11 and the outer cylinder 12 can be respectively arranged as a split structure, and can be specifically connected by threading, welding or gluing to form the inner cylinder 11 and the outer cylinder 12. Of course, for those skilled in the art, the inner cylinder 11 and the outer cylinder 12 can also be set as an integrated structure, and connected with the connecting rib 13 as a whole, which can be processed by 3D printing, or the first liquid cooling channel 101 can be formed by opening a hole on the shell 10 of the integrated structure. It should be noted that the inner cylinder 11 and the outer cylinder 12 are respectively set as split structures, specifically, the inner cylinder 11 and the outer cylinder 12 can be respectively connected by two independent components.

[0045] like Figure 4 , Figure 5 As shown, in some embodiments, the end of the transducer 20 near the cutter 30 is connected to the cutter 30 in a threaded connection. That is to say, the cutter 30 is installed on the transducer 20 in a threaded manner, so that the cutter 30 can be easily disassembled relative to the transducer 20. It should be noted that the assembly method between the cutter 30 and the transducer 20 is not limited to the above. For those skilled in the art, the assembly between the cutter 30 and the transducer 20 can also be assembled by means of a latch, a labyrinth lock, etc. Of course, according to different use requirements of the ultrasonic bone knife 100, the cutter 30 and the transducer 20 can also be set as a non-detachable structure, which will not be elaborated here.

[0046] As can be seen from the above, the transducer 20 is assembled into the housing 10. In order to realize that the transducer 20 can drive the tool 30 to move relative to the housing 10 along the extension direction of the tool 30 when working, in addition to the above-mentioned heat conductive member 40 supporting the assembly of the transducer 20 on the housing 10, the ultrasonic bone knife 100 also includes a flexible support member 201, which is installed between the transducer 20 and the housing 10; and along the extension direction of the tool 30, the flexible support member 201 is arranged on the side of the heat conductive member 40 facing the tool 30. In this way, the assembly of the transducer 20 on the housing 10 can be supported and sealed to meet the requirements of the transducer 20 working in the housing 10. It should be noted that the above-mentioned flexible support member 201 can be specifically set as a sealing ring, a sealing pad, etc.

[0047] like Figure 2 , Figure 3 and Figure 5 As shown, in some embodiments, the transducer 20 and the cutter 30 are connected to form a suction channel 110, and the suction channel 110 can be connected to the first liquid cooling channel 101 through the cutter 30. In this way, when the ultrasonic bone cutter 100 is working, the negative pressure formed in the suction channel 110 can be used to suck the cooling medium discharged from the first liquid cooling channel 101 and acting on the surgical operation site of the cutter 30 during the operation. In addition, the debris generated during the operation can be sucked into the suction channel 110 and discharged. In this process, the cooling medium conducted in the suction channel 110 can also dissipate heat for the transducer 20 and the cutter 30. Since the ultrasonic bone cutter 100 can have the suction function according to the needs, the ultrasonic bone cutter 100 can save the need for an external suction tube during the operation. It should be noted that the specific structure of the above-mentioned transducer 20 and the tool 30 and how the two are connected to form the suction channel 110 can all adopt the conventional methods of existing ultrasonic bone cutters. Of course, for those skilled in the art, the suction of the cooling medium acting on the surgical site can also be achieved by using an external suction tube independent of the ultrasonic bone cutter 100, which will not be elaborated here.

[0048] It can be understood that the transducer 20 will generate vibration when it is working, and the shell 10 is used for the operator to hold and is relatively still. For this reason, the heat conductor 40 is required to have a certain elasticity to offset the vibration generated when the transducer 20 is working, and ensure that the heat conductor 40 can transfer the heat generated when the transducer 20 is working to the outer shell 10 of the handle in time. Therefore, the heat conductor 40 can be specifically set to thermal conductive gel, thermal conductive glue, thermal conductive silicone, etc.

[0049] like Figure 2 As shown, in some embodiments, the ultrasonic bone cutter 100 further includes a protective cover 50, which is sleeved on the cutter 30 and connected to the housing 10, and a second liquid cooling channel 102 is formed between the protective cover 50 and the cutter 30 along the thickness direction of the cutter 30, and the second liquid cooling channel 102 is connected to the first liquid cooling channel 101. In this way, the cooling medium discharged from the first liquid cooling channel 101 can be guided to flow to the cutter 30, and effective heat dissipation of the cutter 30 is achieved, thereby improving the heat dissipation effect of the cutter 30.

[0050] like Figure 2 , Figure 3 As shown, in some embodiments, the protective shell 50 includes an outer protective shell 51 and an inner protective shell 52, the outer protective shell 51 is connected to the outer cylinder 12, one end of the inner protective shell 52 is sealed with the inner cylinder 11, and the other end of the inner protective shell 52 is sealed with the tool 30; wherein, the extension length of the inner protective shell 52 is less than the extension length of the outer protective shell 51, and along the thickness direction of the tool 30, a preset gap is formed between the inner protective shell 52 and the outer protective shell 51, so that the cooling medium conducted in the first liquid cooling channel 101 can flow to the second liquid cooling channel 102 through the preset gap between the inner protective shell 52 and the outer protective shell 51.

[0051] It can be understood that the inner cylinder 11 of the shell 10 and the cutter 30 are assembled and sealed with the inner protective shell 52, so that the cooling medium conducted in the first liquid cooling channel 101 and the second liquid cooling channel 102 can be prevented from entering between the transducer 20 and the shell 10, which can meet the operating requirements of the transducer 20; and ensure that the inside of the ultrasonic bone cutter 100 is not contaminated, thereby reducing the inconvenience caused by the disinfection and sterilization of the internal structure.

[0052] Exemplarily, the inner protective shell 52 and the protective sleeve shell 50 are independently provided, so that the inner protective shell 52 and the protective sleeve shell 50 can be produced and prepared separately, which reduces the process requirements, facilitates production and preparation, and thus reduces costs; alternatively, the inner protective shell 52 and the protective sleeve shell 50 are connected to form an integrated structure, which can be processed and formed by 3D printing.

[0053] like Figure 3As shown, exemplarily, the inner protective shell 52 includes a protective inner sleeve 521 and a sealing member 522, wherein the protective inner sleeve 521 is detachably connected to the housing 10, for example, the protective inner sleeve 521 is connected to the inner cylinder 11 in a threaded manner; wherein the sealing member 522 is disposed on the protective inner sleeve 521 and is interference fit with the cutter 30, so that the protective inner sleeve 521 and the cutter 30 are assembled and sealed. It should be noted that when the above-mentioned protective inner sleeve 521 is connected to the inner cylinder 11 of the housing 10, the threaded fitting structure between the protective inner sleeve 521 and the inner cylinder 11 can be specifically utilized to realize the assembly seal between the protective inner sleeve 521 and the inner cylinder 11. Of course, for those skilled in the art, the protective inner sleeve 521 and the inner cylinder 11 can also be assembled and sealed by adding a sealing ring; in addition, the above-mentioned sealing member 522 can be specifically set as a sealing ring.

[0054] Since the tool 30 needs to reciprocate along with the transducer 20 along its extension direction when working, and the tool 30 needs to be disassembled and assembled relative to the transducer 20, in order to ensure the sealing effect of the seal 522 when assembling and sealing the tool 30 and the protective inner sleeve 521, and to prevent the seal 522 from falling off when the tool 30 moves along its axial direction driven by the transducer 20, the above-mentioned inner protective shell 52 may also include a clamping ring 523, and the seal 522 can be installed on the protective inner sleeve 521 through the clamping ring 523. Specifically, the seal 522 can be clamped between the clamping ring 523 and the protective inner sleeve 521, and the clamping ring 523 and the protective inner sleeve 521 can be connected by a threaded manner to facilitate the disassembly and assembly of the clamping ring 523 relative to the protective inner sleeve 521.

[0055] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the ultrasonic bone cutter 100 further includes a connecting rear cover 70, which is disposed on an end of the housing 10 away from the cutter 30 and connected to the housing 10. In other words, the housing 10 for introducing the cooling medium in the ultrasonic bone cutter 100 is a non-detachable structure, so that in the subsequent process of cleaning the ultrasonic bone cutter 100, an efficient cleaning liquid can be selected, and the flow rate of the cleaning liquid when introduced into the first liquid cooling channel 101 can be increased to achieve the cleaning of the first liquid cooling channel 101 and the second liquid cooling channel 102, so as to meet the demand for repeated use of the ultrasonic bone cutter 100.

[0056] like Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, in some embodiments, the ultrasonic bone cutter 100 further includes a suction tube 81, which is disposed through the rear cover 70 and is connected and communicated with the transducer 20. In this way, the suction tube 81 can be used to suck the suction channel 110, and the suction channel 110 is formed into a negative pressure, which can facilitate the connection between the suction channel 110 and the external suction pump. In other words, when the ultrasonic bone cutter 100 is working, the external suction pump (not shown) can be connected and communicated with the suction tube 81, so that the suction pump can suck the cooling medium and debris from the suction channel 110 through the suction tube 81.

[0057] It should be noted that the end portion of the transducer 20 that is connected to the rear cover 70 can be inserted into the suction tube 81, and a sealing ring (not shown) can be used to seal the plug-in connection between the transducer 20 and the suction tube 81 to achieve a conductive seal between the suction channel 110 and the suction tube 81. In this process, the sealing ring can have a certain elastic structural feature to offset the vibration generated when the transducer 20 is working.

[0058] like Figure 2 , Figure 5 As shown, a liquid inlet channel 821 is opened on the connecting back cover 70 or the shell 10, and the liquid inlet channel 821 is connected to the first liquid cooling channel 101, so that when the ultrasonic bone knife 100 is working, the external cooling medium can be introduced into the first liquid cooling channel 101 through the liquid inlet channel 821.

[0059] Exemplarily, the connection rear cover 70 is connected and communicated with a liquid inlet pipe 82, for example, the liquid inlet pipe 82 and the connection rear cover 70 are set as an integrated structure, and the liquid inlet channel 821 is set in the liquid inlet pipe 82. In this way, the external cooling medium can be introduced into the first liquid cooling channel 101 through the liquid inlet pipe 82, so as to inject the external cooling medium into the ultrasonic osteotome 100. Of course, the above-mentioned liquid inlet channel 821 is not limited to being set on the connection rear cover 70. For those skilled in the art, the liquid inlet channel 821 can also be directly opened on the housing 10.

[0060] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the rear cover 70 may also be connected with a cable connector 83 , and the portion of the cable connector 83 extending into the housing 10 may be electrically connected to the transducer 20 to provide power for the transducer 20 .

[0061] In addition, the present application can also provide a bone knife system, including a main unit (not shown), the above-mentioned ultrasonic bone knife 100 and a liquid supply device, the main unit is electrically connected to the transducer 20, and is used to supply power to the transducer 20 and control the operation of the transducer 20; the liquid supply device is connected to the liquid inlet channel 821, and is used to provide cooling medium to the first liquid cooling channel 101, and to control the flow rate of the cooling medium when it flows in the first liquid cooling channel 101.

[0062] In summary, when the ultrasonic bone knife 100 of the present application is working, the cooling medium introduced by the first liquid cooling channel 101 can simultaneously dissipate heat for the transducer 20 and the cutter 30 in the process of flowing toward the cutter 30. In this way, effective heat dissipation of the transducer 20 and the cutter 30 can be achieved, thereby improving the performance stability of the transducer 20 and the cutter 30, and at the same time improving the comfort of the operator when holding the shell 10 for surgery, so that the ultrasonic bone knife 100 can be suitable for long-term surgical operations.

[0063] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above 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.

[0064] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, appropriate changes and modifications to the above embodiments are within the scope of protection claimed by the present invention.

Claims

1. An ultrasonic osteotome, characterized in that: The invention comprises a housing (10), a transducer (20), a cutter (30) and a heat conducting member (40), wherein the transducer (20) is installed in the housing (10) and connected to the cutter (30), and the heat conducting member (40) is arranged between the transducer (20) and the housing (10), so that the heat generated by the transducer (20) when working can be conducted to the housing (10) through the heat conducting member (40); Wherein, a first liquid cooling channel (101) is formed on the shell (10), and the first liquid cooling channel (101) extends from the proximal end of the shell (10) to the distal end of the shell (10).

2. The ultrasonic osteotome according to claim 1, characterized in that: The first liquid cooling channel (101) comprises a transducer liquid cooling channel, and the transducer liquid cooling channel covers an outer area of ​​the transducer (20); Wherein, the transducer liquid cooling channel includes a plurality of sub-channels (1011).

3. The ultrasonic osteotome according to claim 2, characterized in that: A plurality of sub-channels (1011) are arranged at intervals around the transducer (20); Wherein, the sub-channel (1011) is configured as a linear channel, or the sub-channel (1011) is configured as a spiral channel.

4. The ultrasonic osteotome according to claim 2, characterized in that: The ultrasonic bone knife (100) further comprises a flow divider, which is capable of dividing the cooling medium introduced into the first liquid cooling channel (101) into the plurality of sub-channels (1011).

5. The ultrasonic osteotome according to claim 2, characterized in that: The shell (10) comprises an inner cylinder (11), an outer cylinder (12) and a plurality of connecting ribs (13); the inner cylinder (11) and the outer cylinder (12) are connected via the plurality of connecting ribs (13); Wherein, the sub-channel (1011) is formed between two adjacent connecting ribs (13) and the inner cylinder (11) and the outer cylinder (12).

6. The ultrasonic osteotome according to claim 1, characterized in that: The ultrasonic bone knife (100) further comprises a protective cover (50), wherein the protective cover (50) is sleeved on the knife (30) and connected to the housing (10); A second liquid cooling channel (102) is formed between the protective shell (50) and the tool (30), and the second liquid cooling channel (102) is connected to the first liquid cooling channel (101).

7. The ultrasonic osteotome according to claim 6, characterized in that: The shell (10) comprises an inner cylinder (11) and an outer cylinder (12), and the first liquid cooling channel (101) is formed between the inner cylinder (11) and the outer cylinder (12); The protective shell (50) comprises an outer protective shell (51) and an inner protective shell (52); the outer protective shell (51) is sealedly connected to the outer cylinder (12); one end of the inner protective shell (52) is sealedly connected to the inner cylinder (11); and the other end of the inner protective shell (52) is sealedly matched with the tool (30); wherein the extension length of the inner protective shell (52) is smaller than the extension length of the outer protective shell (51), and a preset gap is formed between the inner protective shell (52) and the outer protective shell (51) along the thickness direction of the tool (30).

8. The ultrasonic osteotome according to claim 7, characterized in that: The inner protective shell (52) comprises a protective inner sleeve (521) and a sealing member (522), and the protective inner sleeve (521) is detachably connected to the inner cylinder (11); The sealing member (522) is arranged on the inner side of the protective inner sleeve (521) and is interference fit with the cutter (30) so that the protective inner sleeve (521) and the cutter (30) are assembled and sealed.

9. The ultrasonic osteotome according to claim 1, characterized in that: The ultrasonic bone knife (100) further comprises a connecting rear cover (70), wherein the connecting rear cover (70) is arranged on an end of the housing (10) away from the knife (30) and is connected to the housing (10).

10. The ultrasonic osteotome according to claim 9, characterized in that: The connecting rear cover (70) or the housing (10) is provided with a liquid inlet channel (821), and the liquid inlet channel (821) is in communication with the first liquid cooling channel (101).

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