Ultrasonic osteotome and osteotome system

Abstract

The ultrasonic osteotome comprises an ultrasonic osteotome main body and a liquid cooling jacket, the ultrasonic osteotome main body comprises a shell, a transducer, a cutter, a heat conduction piece and the liquid cooling jacket, the transducer is installed in the shell and connected with the cutter, the heat conduction piece is arranged between the transducer and the shell, and the liquid cooling jacket is connected with the liquid cooling jacket. Heat generated when the energy converter works can be conducted to the shell through the heat conduction piece; the liquid cooling outer sleeve is arranged on the shell in a sleeving mode, a fluid channel can be formed between the liquid cooling outer sleeve, the shell and the cutter, a liquid inlet channel is further formed in the liquid cooling outer sleeve, and the fluid channel communicates with the liquid inlet channel. 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 liquid cooling outer sleeve for 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 and an osteotome system. 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 operator will feel uncomfortable holding the hand due to the overheating of the transducer, making it impossible for the operator to 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 bone knife and a bone knife system for solving the above-mentioned technical problems.

[0005] An ultrasonic bone scalpel, comprising:

[0006] The ultrasonic bone knife body includes a shell, a transducer, a cutter and a heat conductor, wherein the transducer is installed in the shell and connected to the cutter, and the heat conductor is arranged between the transducer and the shell, so that the heat generated by the transducer when working can be conducted to the shell through the heat conductor;

[0007] A liquid cooling jacket is sleeved on the shell and can form a fluid channel with the shell and the tool. A liquid inlet channel is also formed on the liquid cooling jacket, and the fluid channel is communicated with the liquid inlet channel.

[0008] 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 heat exchange can be carried out with the cooling medium conducted in the fluid channel formed between the shell and the liquid-cooled jacket. At the same time, the tool can directly contact and exchange heat with the cooling medium conducted in the fluid channel formed between the tool and the liquid-cooled jacket. 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 liquid-cooled jacket for surgery, so that the ultrasonic bone knife can be suitable for long-term surgical operations.

[0009] In one of the embodiments, a plurality of support structures are disposed on the inner wall of the liquid cooling jacket, and the support structures are disposed on the housing at a location where the heat conducting element is located.

[0010] In one embodiment, the fluid channel includes a transducer fluid channel, and the cooling medium conducted in the transducer fluid channel can dissipate heat for the transducer;

[0011] The support structure includes support ribs, and the support ribs form a plurality of branch channels in the transducer fluid channel together with the inner wall of the liquid cooling jacket and the shell.

[0012] In one embodiment, a plurality of the branch channels are arranged around the transducer at intervals;

[0013] Wherein, the branch channel is configured as a linear channel, or the branch channel is configured as a spiral channel.

[0014] In one embodiment, the ultrasonic bone knife further includes a diverter, which is capable of diverting the cooling medium introduced from the liquid inlet channel to the plurality of branch channels.

[0015] It can be understood that the cooling medium introduced by the liquid inlet channel is distributed by a diverter, so that the cooling medium can be conducted in multiple branch channels without being affected by the different orientations of the ultrasonic bone knife when the operator holds it and performs surgery. This can improve the uniformity of heat dissipation of the transducer.

[0016] In one embodiment, the ultrasonic bone knife body further includes a connecting rear cover, and the connecting rear cover is connected to an end of the housing away from the knife;

[0017] Wherein, the liquid cooling jacket is detachably connected to the connecting rear cover.

[0018] It is understandable that the liquid cooling jacket is detachably connected to the connecting back cover, so that the operator can disassemble, clean or replace the liquid cooling jacket as needed to ensure that the cooling medium conducted in the liquid cooling jacket meets the anti-contamination requirements during ultrasonic bone knife surgery.

[0019] In one of the embodiments, a connecting ring is rotatably connected to the connecting rear cover, and the connecting ring can cooperate with the thread of the liquid cooling jacket to connect the liquid cooling jacket to the connecting rear cover.

[0020] It can be understood that the liquid cooling jacket is connected to the connecting ring on the connecting rear cover in a threaded manner, so that the liquid cooling jacket can be easily assembled and disassembled on the connecting rear cover.

[0021] In one embodiment, the liquid cooling jacket comprises a liquid cooling jacket body and an inner protective shell, and the extension length of the liquid cooling jacket body is greater than the extension length of the shell;

[0022] One end of the inner protective shell is sealingly connected to the shell, and the other end of the inner protective shell is sealingly matched with the tool; and along the thickness direction of the tool, a preset gap is formed between the inner protective shell and the liquid cooling jacket body.

[0023] 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 shell;

[0024] The sealing member is arranged on the inner side of the protective inner sleeve and abuts against the tool, so that the protective inner sleeve and the tool are assembled and sealed.

[0025] The present application also requests protection for a bone knife system, comprising a host, the ultrasonic bone knife described above, and a liquid supply device, wherein the host is electrically connected to the transducer, and the liquid supply device is connected to the liquid inlet 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 and bone knife system protected by the present invention, the heat generated by the transducer when working can be conducted to the shell through the heat conductor, and heat exchange is carried out with the cooling medium conducted in the fluid channel formed between the shell and the liquid-cooled jacket. At the same time, the tool can directly contact and exchange heat with the cooling medium conducted in the fluid channel formed between the tool and the liquid-cooled jacket. 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 when holding the liquid-cooled jacket for surgery is also 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 This is a schematic diagram of the structure of the ultrasonic bone knife body in this application;

[0033] Figure 5 It is a cross-sectional view of the main body of the ultrasonic bone knife in the present application, wherein the bone knife is disassembled from the transducer;

[0034] Figure 6 for Figure 5 Enlarged view of the middle Q section.

[0035] 1. The ultrasonic bone knife is provided with a plurality of connecting members, each of which is provided with a plurality of connecting members. The connecting members are provided with a plurality of connecting members, each of which is provided with a plurality of connecting members. The connecting members are provided with a plurality of connecting members, each of which is provided with a plurality of connecting members. 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 knife 100 provided in an embodiment of the present application includes an ultrasonic bone knife body 10 and a liquid cooling jacket 20. The ultrasonic bone knife body 10 includes a shell 11, a transducer 12, a cutter 13 and a heat conductor 14. The transducer 12 is installed in the shell 11 and connected to the cutter 13. The heat conductor 14 is arranged between the transducer 12 and the shell 11, so that the heat generated by the transducer 12 when working can be conducted to the shell 11 through the heat conductor 14; the liquid cooling jacket 20 is mounted on the shell 11 and can form a fluid channel 101 between the shell 11 and the cutter 13. A liquid inlet channel 2111 is also formed on the liquid cooling jacket 20, and the fluid channel 101 is connected to the liquid inlet channel 2111.

[0040] As can be seen from the above, when the ultrasonic bone knife 100 is working, the heat generated by the transducer 12 during operation can be conducted to the shell 11 through the heat conductor 14, and heat exchange is performed with the cooling medium conducted in the fluid channel 101 formed between the shell 11 and the liquid-cooled jacket 20. At the same time, the tool 13 can directly contact and heat exchange with the cooling medium conducted in the fluid channel 101 formed between the tool 13 and the liquid-cooled jacket 20. In this way, effective heat dissipation of the transducer 12 and the tool 13 can be achieved, and the performance stability of the transducer 12 and the tool 13 can be improved. At the same time, the comfort of the operator holding the liquid-cooled jacket 20 during 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 inside the ultrasonic bone knife 100 can be specifically set to physiological saline. When the ultrasonic bone knife 100 is used to perform surgery on inanimate objects such as specimens, the cooling medium conducted inside the ultrasonic bone knife 100 can be set to distilled water, tap water, etc., which will not be elaborated here.

[0041] In some embodiments, a plurality of support structures (not shown) are provided on the inner wall of the liquid cooling jacket 20, and the support structures are provided on the housing 11 at the location of the heat conducting member 14; thus, the housing 11 can support the liquid cooling jacket 20 through the support structures, so that the operator can control the ultrasonic osteotome 100 by holding the liquid cooling jacket 20. It should be noted that the above-mentioned support structures may specifically include support ribs, support columns, etc. formed on the liquid cooling jacket 20.

[0042] like Figure 2As shown, the fluid channel 101 includes a transducer fluid channel (not shown), and the cooling medium conducted in the transducer fluid channel can dissipate heat for the transducer 12; the support structure includes support ribs, and multiple branch channels 1011 are formed between the inner wall of the liquid cooling jacket 20, multiple support ribs and the shell 11. In this way, the cooling medium conducted by the branch channels 1011 can be used to heat exchange the heat conducted to the shell 11 by the heat-conducting member 14. In other words, when the ultrasonic osteotome 100 is working, the cooling medium conducted in the branch channels 1011 is used to cool the shell 11 and dissipate heat for the transducer 12.

[0043] like Figure 2 As shown, in some embodiments, a plurality of branch channels 1011 are arranged at intervals around the transducer 12; the branch channels 1011 are set as straight channels, or the branch channels 1011 are set as spiral channels. It should be noted that the spiral branch channels 1011 can prolong the residence time of the cooling medium when passing through the branch channels 1011 compared to the straight branch channels 1011, and can enable the cooling medium to flow circumferentially around the outer side of the transducer 12, so that the heat dissipation effect on each circumferential part of the transducer 12 is more uniform, which can improve the cooling effect of the cooling medium when cooling the heat conducted to the housing 11 by the heat conducting member 14 from the transducer 12, and can further improve the heat dissipation uniformity, that is, it has the effect of further improving the heat dissipation efficiency of the transducer 12 when the ultrasonic bone knife 100 is working.

[0044] In some embodiments, the ultrasonic bone knife 100 further includes a flow divider (not shown), which can divert the cooling medium introduced by the liquid inlet channel 2111 to multiple branch channels 1011. In this way, the cooling medium can be conducted in multiple branch 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 12 dissipates heat. It should be noted that the above-mentioned flow divider can be specifically set as an annular groove provided on the liquid cooling jacket 20, or it can be a flow control member independently provided from the housing 11, wherein the flow control member is respectively connected to each branch 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 branch channels 1011. Preferably, the flow control member can realize uniform distribution of the cooling medium when working.

[0045] like Figure 2 , Figure 5As shown, in some embodiments, the housing 11 includes a handle shell 111 and a handle front shell 112, and the handle front shell 112 is connected to the handle shell 111, for example, the handle front shell 112 and the handle shell 111 are connected as one body by threading, welding or gluing. In this way, the production and preparation of the housing 11 can be facilitated. Of course, for those skilled in the art, the handle shell 111 and the handle front shell 112 can also be set as an integrated structure, which can be specifically processed and formed by 3D printing.

[0046] The transducer 12 is fixedly mounted in the handle housing 111. In order to enable the transducer 12 to drive the cutter 13 to move relative to the housing 11 along the extension direction of the cutter 13 when working, in addition to the above-mentioned heat-conducting member 14 supporting the assembly of the transducer 12 on the housing 11, the ultrasonic bone knife 100 also includes a flexible support member 201, which is installed between the transducer 12 and the housing 11; and along the extension direction of the cutter 13, the flexible support member 201 is arranged on the side of the heat-conducting member 14 facing the cutter 13. In this way, the assembly of the transducer 12 on the housing 11 can be supported and sealed to meet the requirements of the transducer 12 working in the housing 11. 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 4 , Figure 5 As shown, in some embodiments, the transducer 12 partially extends outward relative to the housing 11, and the portion of the transducer 12 extending out of the housing 11 is connected to the tool 13 in a threaded manner. In other words, the tool 13 is installed on the transducer 12 in a threaded manner, so that the tool 13 can be easily disassembled and assembled relative to the transducer 12. It should be noted that the assembly method between the tool 13 and the transducer 12 is not limited to the above-mentioned method. For those skilled in the art, the assembly between the tool 13 and the transducer 12 can also be assembled by means of a latch, a labyrinth lock, etc. Of course, according to different usage requirements of the ultrasonic bone knife 100, the tool 13 and the transducer 12 can also be set as a non-detachable structure, which will not be elaborated here.

[0048] like Figure 2As shown, in some embodiments, the transducer 12 and the cutter 13 are connected to form a suction channel 110, and the suction channel 110 can be connected to the fluid channel 101 through the cutter 13. 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 fluid channel 101 and acting on the surgical operation site of the cutter 13 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 12 and the cutter 13. Since the ultrasonic bone cutter 100 can also have the suction function according to needs, the ultrasonic bone cutter 100 can save the use of an external suction tube in the surgical operation. It should be noted that the specific structure of the above-mentioned transducer 12 and the tool 13 and how the two are connected to form the suction channel 110 can all adopt the conventional methods of existing ultrasonic bone knives. Of course, for those skilled in the art, the suction of the cooling medium acting on the surgical operation site can also be achieved by using an external suction tube independent of the ultrasonic bone knife 100, which will not be elaborated here.

[0049] It can be understood that the transducer 12 will generate vibration when it is working, and the shell 11 is used for the operator to hold and is relatively still. For this reason, the heat conductor 14 is required to have a certain elasticity to offset the vibration generated when the transducer 12 is working, and ensure that the heat conductor 14 can transfer the heat generated when the transducer 12 is working to the handle outer shell 11 in time. Therefore, the heat conductor 14 can be specifically set to thermal conductive gel, thermal conductive glue, thermal conductive silicone, etc.

[0050] like Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the ultrasonic bone knife body 10 further includes a connection rear cover 15, which is disposed on an end of the housing 11 away from the cutter 13 and connected to the housing 11; wherein the liquid cooling jacket 20 is detachably connected to the connection rear cover 15. In this way, the liquid cooling jacket 20 can be removed from the housing 11 to facilitate subsequent cleaning or replacement of the liquid cooling jacket 20, so that the cooling medium conducted in the liquid cooling jacket 20 can ensure that the anti-contamination requirements of the ultrasonic bone knife 100 are met during surgical operations.

[0051] Exemplarily, the shell body 11 is mounted on the connecting rear cover 15 , and the handle shell 111 on the shell body 11 and the connecting rear cover 15 can be connected and fixed by gluing, welding or the like.

[0052] like Figure 2 , Figure 5 and Figure 6As shown, in some embodiments, a connecting ring 151 is rotatably connected to the connecting rear cover 15, wherein the connecting ring 151 can be threadedly matched with the liquid cooling jacket 20 to connect the liquid cooling jacket 20 to the connecting rear cover 15. In other words, the liquid cooling jacket 20 mounted on the housing 11 can be assembled and limited on the connecting rear cover 15 through the threaded match between the liquid cooling jacket 20 and the connecting ring 151, so that the liquid cooling jacket 20 can be easily disassembled and assembled relative to the connecting rear cover 15.

[0053] like Figure 6 As shown, a limit stopper 1511 is formed on the connection ring 151, and the limit stopper 1511 can abut against the connection rear cover 15 to limit the connection ring 151 from being separated from the connection rear cover 15. Of course, the connection ring 151 and the connection rear cover 15 can also be assembled and connected in a threaded manner, so that the connection ring 151 is always connected to the connection rear cover 15 during the disassembly and assembly process of the liquid cooling jacket 20.

[0054] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, the ultrasonic bone cutter body 10 further includes a suction tube 16, which is connected to the suction channel 110. In this way, the suction tube 16 can be used to suck the suction channel 110, and the suction channel 110 is formed into a negative pressure, which can facilitate the suction operation of the suction channel 110. In other words, when the ultrasonic bone cutter 100 is working, an external suction pump (not shown) can be connected and communicated with the suction tube 16, so that the suction pump can suck the cooling medium and its debris from the suction channel 110 through the suction tube 16.

[0055] It should be noted that the end of the transducer 12 facing the connected rear cover 15 can be inserted into the suction tube 16, and the plug-in fit between the transducer 12 and the suction tube 16 can be sealed with a sealing ring 202 to achieve the conductive sealing between the suction channel 110 and the suction tube 16. In this process, the structural characteristics of the sealing ring 202 with a certain elasticity can be used to offset the vibration generated when the transducer 12 is working.

[0056] In addition, in some embodiments, a cable connector 17 may be plugged into the connection back cover 15 , and the portion of the cable connector 17 extending into the housing 11 is electrically connected to the transducer 12 to supply power to the transducer 12 .

[0057] like Figure 2 , Figure 3As shown, in some embodiments, the liquid-cooling jacket 20 includes a liquid-cooling jacket body 21 and an inner protective shell 22, the extension length of the liquid-cooling jacket body 21 is greater than the extension length of the shell 11; one end of the inner protective shell 22 is sealed with the shell 11, and the other end of the inner protective shell 22 is sealed with the tool 13; and along the thickness direction of the tool 13, a preset gap is formed between the inner protective shell 22 and the liquid-cooling jacket body 21 for the cooling medium to flow through.

[0058] It can be understood that the inner protective shell 22 is used to assemble and seal the housing 11 and the cutter 13, so that the cooling medium conducted by the fluid channel 101 can be prevented from entering between the transducer 12 and the housing 11, that is, the transducer 12 is waterproof and sealed, which can meet the operating requirements of the transducer 12. The cooling medium conducted in the fluid channel 101 can be prevented from entering between the transducer 12 and the housing 11, which can meet the operating requirements of the transducer 12 and ensure that the interior of the ultrasonic bone cutter 100 is not contaminated, thereby reducing the inconvenience caused by the disinfection and sterilization of the internal structure.

[0059] Exemplarily, the inner protective shell 22 and the liquid-cooling jacket body 21 are independently provided, so that the inner protective shell 22 and the liquid-cooling jacket 20 can be produced and prepared separately, which has the effect of reducing process requirements, facilitating production and preparation, and thus reducing costs; alternatively, the inner protective shell 22 and the liquid-cooling jacket body 21 are connected to form an integrated structure, which can be specifically processed and formed by 3D printing.

[0060] like Figure 3 As shown, in some embodiments, the inner protective shell 22 includes a protective inner sleeve 221 and a sealing member 222. The protective inner sleeve 221 is detachably connected to the housing 11, for example, the protective inner sleeve 221 is connected to the handle front shell 112 by means of a thread; the sealing member 222 is arranged on the inner side of the protective inner sleeve 221 and can abut against the tool 13, so that the protective inner sleeve 221 and the tool 13 are assembled and sealed. It should be noted that when the protective inner sleeve 221 is connected to the handle front shell 112 of the housing 11, the threaded matching structure between the protective inner sleeve 221 and the handle front shell 112 can be used to achieve the assembly and sealing between the protective inner sleeve 221 and the handle front shell 112. Of course, for those skilled in the art, the protective inner sleeve 221 and the handle front shell 112 can also be assembled and sealed by adding a sealing ring; in addition, the sealing member 222 can be specifically set as a sealing ring.

[0061] Since the tool 13 needs to reciprocate along the axial direction of the transducer 12 when working, and the tool 13 needs to be disassembled and assembled relative to the transducer 12, in order to ensure the sealing effect of the seal 222 when the tool 13 and the protective inner sleeve 221 are assembled and sealed, and to prevent the seal 222 from falling off when the tool 13 moves along the axial direction driven by the transducer 12, the above-mentioned inner protective shell 22 may also include a clamping ring 223, and the seal 222 can be installed on the protective inner sleeve 221 through the clamping ring 223. Specifically, the seal 222 can be clamped between the clamping ring 223 and the protective inner sleeve 221, and the clamping ring 223 and the protective inner sleeve 221 can be connected by a threaded manner to facilitate the disassembly and assembly of the clamping ring 223 relative to the protective inner sleeve 221.

[0062] like Figure 1 , Figure 2 and Figure 5 As shown, in some embodiments, a liquid inlet pipe 211 is connected and communicated with the liquid cooling jacket body 21, and a liquid inlet channel 2111 is provided on the liquid inlet pipe 211, so that an external pipeline can be connected and communicated with the liquid cooling jacket 20 through the liquid inlet pipe 211, so that it is convenient to introduce the external cooling medium into the liquid inlet channel 2111. It should be noted that the direction of the above-mentioned liquid inlet pipe 211 can be consistent with the direction of the suction pipe 16.

[0063] In addition, the present application also provides a bone knife system, including a main unit, the ultrasonic bone knife 100 described above and a liquid supply device. The main unit is electrically connected to the transducer 12 for powering the transducer 12 and controlling the operation of the transducer 12; the liquid supply device is connected to the liquid inlet channel 2111 for providing a cooling medium to the fluid channel 101 and controlling the flow rate of the cooling medium when flowing in the fluid channel 101.

[0064] In summary, when the ultrasonic bone knife 100 of the present application is working, the heat generated by the transducer 12 during operation can be conducted to the shell 11 through the heat conductor 14, and heat exchange is performed with the cooling medium conducted in the fluid channel 101 formed between the shell 11 and the liquid-cooled jacket 20. At the same time, the tool 13 can directly contact and heat exchange with the cooling medium conducted in the fluid channel 101 formed between the tool 13 and the liquid-cooled jacket 20. In this way, effective heat dissipation of the transducer 12 and the tool 13 can be achieved, and the performance stability of the transducer 12 and the tool 13 can be improved. At the same time, the comfort of the operator holding the liquid-cooled jacket 20 for surgery is also improved, so that the ultrasonic bone knife 100 can be suitable for long-term surgical operations.

[0065] 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.

[0066] 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 ultrasonic osteotome (100) comprises: An ultrasonic bone knife body (10) comprises a shell (11), a transducer (12), a cutter (13) and a heat conducting member (14); the transducer (12) is installed in the shell (11) and connected to the cutter (13); the heat conducting member (14) is arranged between the transducer (12) and the shell (11), so that the heat generated by the transducer (12) when working can be conducted to the shell (11) through the heat conducting member (14); A liquid cooling jacket (20) is mounted on the shell (11) and is capable of forming a fluid channel (101) between the shell (11) and the tool (13); a liquid inlet channel (2111) is also formed on the liquid cooling jacket (20); and the fluid channel (101) is connected to the liquid inlet channel (2111).

2. The ultrasonic osteotome according to claim 1, characterized in that: A plurality of support structures are arranged on the inner wall of the liquid cooling jacket (20), and the support structures are arranged on the housing (11) at a location where the heat conducting element (14) is located.

3. The ultrasonic osteotome according to claim 2, characterized in that: The fluid channel (101) comprises a transducer fluid channel, and the cooling medium flowing through the transducer fluid channel can dissipate heat for the transducer (12); The support structure comprises support ribs, and the support ribs form a plurality of branch channels (1011) in the transducer fluid channel together with the inner wall of the liquid cooling jacket (20) and the shell (11).

4. The ultrasonic osteotome according to claim 3, characterized in that: A plurality of branch channels (1011) are arranged at intervals around the transducer (12); Wherein, the branch channel (1011) is configured as a linear channel, or the branch channel (1011) is configured as a spiral channel.

5. The ultrasonic osteotome according to claim 3, characterized in that: The ultrasonic bone knife (100) further comprises a flow diverter, which is capable of diverting the cooling medium introduced through the liquid inlet channel (2111) to the plurality of branch channels (1011).

6. The ultrasonic osteotome according to claim 1, characterized in that: The ultrasonic bone knife body (10) further comprises a connecting rear cover (15), wherein the connecting rear cover (15) is connected to an end of the housing (11) away from the knife (13); Wherein, the liquid cooling jacket (20) is detachably connected to the connecting rear cover (15).

7. The ultrasonic osteotome according to claim 6, characterized in that: A connecting ring (151) is rotatably connected to the connecting rear cover (15), and the connecting ring (151) can be threadably matched with the liquid cooling jacket (20) to connect the liquid cooling jacket (20) to the connecting rear cover (15).

8. The ultrasonic osteotome according to claim 1, characterized in that: The liquid cooling jacket (20) comprises a liquid cooling jacket body (21) and an inner protective shell (22), and the extension length of the liquid cooling jacket body (21) is greater than the extension length of the shell (11); One end of the inner protective shell (22) is sealedly connected to the shell body (11), and the other end of the inner protective shell (22) is sealedly matched with the tool (13); and along the thickness direction of the tool (13), a preset gap is formed between the inner protective shell (22) and the liquid-cooling jacket body (21).

9. The ultrasonic osteotome according to claim 8, characterized in that: The inner protective shell (22) comprises a protective inner sleeve (221) and a sealing member (222), and the protective inner sleeve (221) is detachably and sealingly connected to the housing (11); The sealing member (222) is arranged on the inner side of the protective inner sleeve (221) and abuts against the cutter (13) so that the protective inner sleeve (221) and the cutter (13) are assembled and sealed.

10. A bone cutting system, characterized in that: It comprises a host, an ultrasonic bone knife (100) according to any one of claims 1 to 9, and a liquid supply device, wherein the host is electrically connected to the transducer (12), and the liquid supply device is connected to the liquid inlet channel (2111).

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