Ultrasonic bone scalpel and ultrasonic cutting device

Abstract

This invention relates to an ultrasonic bone scalpel and an ultrasonic cutting device, belonging to the field of medical device technology. The ultrasonic bone scalpel is used to cut bone tissue from within the medullary cavity, and includes an ultrasonic scalpel body and a retaining assembly. The ultrasonic scalpel body includes a handle and a cutting head mounted on one end of the handle. The retaining assembly includes a pressure bladder mounted on the handle, with the pressure bladder and cutting head arranged radially opposite each other along the handle. The pressure bladder is capable of expanding or contracting. The ultrasonic bone scalpel provided by this invention utilizes the expansion of the pressure bladder to provide continuous cutting pressure based on the cutting action of the ultrasonic scalpel body, reducing the cutting wound on soft tissue, thereby protecting soft tissue while satisfying bone tissue cutting requirements. Furthermore, because this ultrasonic bone scalpel cuts from the inside out of the medullary cavity, it avoids external damage to soft tissue, thus reducing the cutting wound on soft tissue and further protecting it. Therefore, when the cutting wound on soft tissue is reduced, the risk of intraoperative infection is correspondingly reduced, and the healing time is shortened.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to ultrasonic bone scalpels and ultrasonic cutting devices. Background Technology

[0002] Currently, the gold standard for treating femoral shaft fractures is intramedullary nailing, as it allows for closed reduction, maximizing the protection of soft tissues surrounding the fracture ends, increasing the chances of fracture healing, and reducing the risk of postoperative infection. However, for patients with old femoral fractures or nonunion of femoral fractures, it is often necessary to incise the soft tissues at the affected site, remove the skeletal tissue, hematoma, and other soft tissues formed between the fractures, and especially to further smooth the fracture lines at both ends of the fracture to achieve anatomical reduction. Moreover, because the soft tissues are sharply dissected by surgical instruments during open reduction, and the bone marrow in the medullary cavity of adults is mostly composed of fatty tissue, there is little protection for the soft tissues. Therefore, although the above methods can relatively improve the fracture healing rate, they inevitably increase the patient's wound size, prolong the healing time, and increase the risk of intraoperative infection. Summary of the Invention

[0003] Based on this, the present invention provides an ultrasonic bone scalpel that can not only cut bone tissue from the medulla oblongata to clear the fracture gap and prepare for subsequent anatomical reduction, but also protect the soft tissue around the fracture ends, reduce the risk of intraoperative infection, reduce the size of the patient's wound, and shorten the healing time.

[0004] An ultrasonic bone scalpel for cutting bone tissue from within the medulla oblongata, comprising an ultrasonic scalpel body and a retaining assembly;

[0005] The ultrasonic scalpel body includes a handle and a blade head mounted on one end of the handle. The retaining assembly includes a pressure bladder mounted on the handle, and the pressure bladder and the blade head are arranged radially opposite to each other along the handle. The pressure bladder is capable of expanding or contracting.

[0006] The aforementioned ultrasonic bone scalpel, with its handle carrying the blade and a retracted pressure bladder, extends into the medullary cavity to cut bone tissue from the inside out. During the cutting process, the pressure bladder gradually expands to press against the wall of the medullary cavity, providing continuous cutting pressure to the blade. As the blade cuts, the pressure applied by the expanding pressure bladder ensures that the blade travels continuously along the cutting direction and does not deviate to other positions, thus protecting the surrounding soft tissue. Simultaneously, because the ultrasonic scalpel uses mechanical vibration to cut and break down hard bone tissue, it does not damage the surrounding soft tissue. In other words, the ultrasonic bone scalpel provided by this invention utilizes the expansion of the pressure bladder to provide continuous cutting pressure on top of the ultrasonic scalpel's cutting action, reducing the cutting wound on soft tissue and thus protecting soft tissue while satisfying bone tissue cutting needs. Furthermore, because this ultrasonic bone scalpel cuts from the inside out of the medullary cavity, it avoids external damage to soft tissue, further reducing the cutting wound on soft tissue and protecting it. Therefore, when the soft tissue cutting wound is reduced, the risk of intraoperative infection is correspondingly reduced, and the healing time is shortened.

[0007] In one embodiment, the retaining assembly further includes a delivery pipe and a power pump, the delivery pipe connecting the power pump to the pressure bladder, the power pump controlling the expansion or contraction of the pressure bladder through the delivery pipe.

[0008] In one embodiment, the handle has a first channel extending along its own axis, and the first end of the first channel is in communication with the pressure bladder.

[0009] The end of the delivery pipe opposite to the power pump is connected to the second end of the first channel; or the end of the delivery pipe opposite to the power pump extends from the second end of the first channel to the first end and is connected to the pressure bladder.

[0010] In one embodiment, the ultrasonic bone scalpel further includes a cooling conduit connected to the handle or the tip;

[0011] And / or, the ultrasonic bone scalpel further includes an absorption channel connected to the handle or the tip.

[0012] In one embodiment, the tool holder has a second channel extending along its own axis inside, the first channel and the second channel are spaced apart and not connected, and the second channel forms the cooling pipe.

[0013] In one embodiment, the cutter head is configured with a feed hole extending through its own width, and the second channel communicates with the feed hole.

[0014] In one embodiment, the handle has a third channel extending along its own axis. The third channel is spaced apart from and does not communicate with the second channel and the first channel. The third channel forms the absorption channel.

[0015] In one embodiment, the third channel is connected to a connecting pipe at one end on the blade head side, the connecting pipe protruding from the blade handle.

[0016] In one embodiment, the protrusion of the tube from the handle is 5mm-9mm in length.

[0017] In one embodiment, the ultrasonic bone scalpel further includes an image acquisition component mounted on the scalpel handle, the image acquisition component being used to acquire a field of view within the medullary cavity.

[0018] In one embodiment, the handle has a fourth channel extending along its own axis, and the extended end of the fourth channel is bent to penetrate through the side wall of the handle. The fourth channel is arranged at intervals from the first channel, the second channel, and the third channel and is not connected to each other.

[0019] The image acquisition component includes a fiber optic endoscope that can extend into the fourth channel and extend out from the bend of the fourth channel.

[0020] In one embodiment, the bent section of the fourth channel extends with a cover.

[0021] In one embodiment, the handle has a fifth channel extending along its own axis, and the extended end of the fifth channel is bent to pass through the blade head. The fifth channel is arranged at intervals from the first channel, the second channel, the third channel, and the fourth channel and is not connected to each other.

[0022] The ultrasonic bone scalpel also includes an ultrasonic driver, one end of which extends into the fifth channel to connect with the scalpel head.

[0023] In one embodiment, the handle is provided with graduation lines.

[0024] The present invention also provides an ultrasonic cutting device that can cut bone tissue while protecting soft tissue, thereby reducing soft tissue wounds.

[0025] An ultrasonic cutting device includes the ultrasonic bone scalpel described above, and also includes an ultrasonic main unit, wherein the ultrasonic bone scalpel is connected to the ultrasonic main unit. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of an ultrasonic bone scalpel provided in an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A partial front view of the ultrasonic bone scalpel provided in the image;

[0028] Figure 3 for Figure 2 A top view of the ultrasonic bone scalpel provided in the image;

[0029] Figure 4 for Figure 2 The image shows a side view of the ultrasonic bone scalpel.

[0030] Reference numerals: 10-Ultrasonic scalpel body; 11-Scalpel handle; 12-Scalpel head; 20-Retaining assembly; 21-Pressure bladder; 22-Delivery tube; 23-Power pump; 100-Ultrasonic bone scalpel; 111-First channel; 112-Second channel; 113-Third channel; 114-Fourth channel; 115-Fifth channel; 121-Delivery hole; 1131-Connecting pipe; 1141-Cover body. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] Currently, the standard procedure for treating femoral shaft fractures is intramedullary nailing, as this method allows for closed reduction, maximizing the protection of soft tissues surrounding the fracture ends, increasing the chances of fracture healing, and reducing the risk of postoperative infection. However, for patients with old femoral fractures or nonunion, it is often necessary to incise the soft tissues at the affected site, remove callus tissue, hematoma, and other soft tissues formed between the fractures, and especially to further smooth the fracture lines at both ends to achieve anatomical reduction. Although this method can relatively improve the healing rate, it still inevitably increases the patient's wound, thereby increasing the risk of intraoperative infection, and the healing rate remains insufficient. Therefore, if callus tissue could be removed from within the medullary cavity and the fracture lines smoothed, the clinical situation could be significantly improved, not only preparing for subsequent anatomical reduction but also protecting the soft tissues surrounding the fracture ends.

[0038] In clinical practice, a curette is used to remove bone marrow from the medullary cavity during traumatic surgery. After incision, callus and other soft tissues are handled using scalpels or bone forceps. Cutting the fracture line flush is primarily done using a manual osteotome and an electric oscillating saw. Because the soft tissue has already been sharply dissected by surgical instruments during open reduction, and because the bone marrow in the medullary cavity of adults is mostly adipose tissue requiring no special protection, ultrasonic osteotome is rarely used in open reduction. In fact, the ultrasonic osteotome is an important instrument in orthopedic surgery. It utilizes vertical vibration acceleration at the tip to destroy bone tissue, and this vertical vibration acceleration is generated by piezoelectric ceramics under the inverse piezoelectric effect, allowing for precise removal of bone tissue while protecting surrounding soft tissue.

[0039] Based on the above, one embodiment of the present invention provides an ultrasonic bone scalpel that can not only cut bone tissue from the medulla oblongata to clear the fracture gap and prepare for subsequent anatomical reduction, but also protect the soft tissues surrounding the fracture ends, reduce the risk of intraoperative infection, minimize the patient's wound, and shorten the healing time. The ultrasonic bone scalpel is described in detail below.

[0040] Figure 1 This is a schematic diagram of an ultrasonic bone scalpel provided according to an embodiment of the present invention. Figure 1 As shown, the ultrasonic bone scalpel 100 includes an ultrasonic scalpel body 10 and a retaining assembly 20. The ultrasonic scalpel body 10 includes a handle 11 and a blade head 12 mounted on one end of the handle 11. The retaining assembly 20 includes a pressure bladder 21 mounted on the handle 11, and the pressure bladder 21 and the blade head 12 are arranged radially opposite to each other along the handle 11. The pressure bladder 21 can expand or contract.

[0041] The pressure bladder 21 is inflated during use and contracted when not in use or when removed from or inserted into the medullary cavity. In actual use, the handle 11, carrying the blade 12 and the contracted pressure bladder 21, extends into the medullary cavity to cut bone tissue from the inside out. During cutting, the pressure bladder 21 gradually expands to press against the wall of the medullary cavity, providing continuous cutting pressure to the blade 12. Therefore, during cutting, the pressure exerted by the expanding pressure bladder 21 ensures that the blade 12 continues to travel along the cutting direction as much as possible, preventing it from deviating to other positions and protecting the surrounding soft tissue. Furthermore, due to the cutting principle of the ultrasonic bone scalpel 100—using mechanical vibration to cut and destroy hard bone tissue—it does not damage the surrounding soft tissue.

[0042] In summary, the ultrasonic bone scalpel 100 provided in this embodiment, based on the cutting action of the ultrasonic scalpel body 10, utilizes the expansion of the pressure bladder 21 to provide continuous cutting pressure, reducing the cutting wound on soft tissue and thus satisfying the need for both bone cutting and soft tissue protection. Furthermore, because the ultrasonic bone scalpel 100 cuts from the medullary cavity outwards, avoiding external damage to soft tissue, the cutting wound on soft tissue is reduced, further protecting the soft tissue. Therefore, when the soft tissue cutting wound is reduced, the risk of intraoperative infection is correspondingly lowered, and the healing time is shortened.

[0043] Please continue to refer to Figure 1 As shown, in some embodiments, the holding assembly 20 further includes a delivery tube 22 and a power pump 23. The delivery tube 22 connects the power pump 23 and the pressure balloon 21, and the power pump 23 controls the expansion or contraction of the pressure balloon 21 through the delivery tube 22. Specifically, due to the specific positioning of the pressure balloon 21, it needs to be located inside the medullary cavity along with the blade 12 during use; however, for ease of operation by the surgeon, the air pressure control of the pressure balloon 21 needs to be located outside the medullary cavity, meaning the power pump 23 is always located outside the medullary cavity. Therefore, the delivery tube 22 connects the pressure balloon 21 and the power pump 23, thereby satisfying the control of the pressure balloon 21. The power pump 23 is a pressure pump.

[0044] As mentioned above, the ultrasonic scalpel body 10 was structurally modified to facilitate practical operation precisely because the delivery tube 22 needs to be connected. The structure of the ultrasonic scalpel body 10 is described in detail below.

[0045] Figure 4 for Figure 2 The image shows a side view of the ultrasonic bone scalpel. Please refer to the provided image. Figure 1 and Figure 4 As shown, in some embodiments, the handle 11 has a first channel 111 extending along its own axis, and the first end of the first channel 111 is connected to the pressure bladder 21. The section of the delivery tube 22 away from the power pump 23 is connected to the second section of the first channel 111. That is, by providing the first channel 111 on the handle 11 as an airflow passage connecting the pressure bladder 21 and the power pump 23, the number of pipes wound on the handle 11 is reduced. In this case, the delivery tube 22 effectively extends the connection distance between the first channel 111 and the power pump 23, ensuring that the power pump 23 remains in a position that does not interfere with the surgical operation and is convenient for the surgeon or assisting medical personnel to operate throughout the entire procedure. As a preferred embodiment, the delivery tube 22 is a plastic flexible tube.

[0046] Figure 2 for Figure 1 The image provided shows a partial front view of the ultrasonic bone scalpel. Please refer to it. Figure 1 , Figure 2 and Figure 4As shown, further, the second end of the first channel 111 is located on the end face of the shank 11 opposite to the end of the cutter head 12, and the second end protrudes approximately 3mm-5mm from the end face of the shank 11 along the axis of the first channel 111 to form a connecting end, so that the delivery tube 22 can be fitted onto the connecting end. Considering the airtightness issue, the outer diameter of the connecting end can be slightly larger than the inner diameter of the delivery tube 22, or a sealing ring can be provided between the two. The first end of the first channel 111 extends radially toward the pressure bladder 21 along the shank 11 to extend into the pressure bladder 21. At this time, the protruding length of the first end is between 1mm and 2mm, for example, 1mm, 1.5mm, or 2mm.

[0047] It should be noted that because the first and second ends of the first channel 111 are connected to different objects, their lengths protruding from the handle 11 are also different. The first end needs to be smaller to allow direct airflow to the pressure bladder 21 while avoiding excessive length that could wear down the inner wall of the pressure bladder 21. The second end needs to be longer to provide sufficient contact area for connection with the delivery pipe 22.

[0048] In other embodiments, the tool holder 11 has a first channel 111 extending along its own axis, with the first end of the first channel 111 communicating with the pressure bladder 21. The end of the delivery pipe 22 facing away from the power pump 23 extends from the second end of the first channel 111 to the first end, communicating with the pressure bladder 21. That is, in this embodiment, the first channel 111 provides guiding installation space for the delivery pipe 22 relative to the tool holder 11. In yet another embodiment, the delivery pipe 22 can be disposed close to the side wall of the tool holder 11, and can be attached to the tool holder 11 using an adhesive.

[0049] Please continue to refer to Figure 1 , Figure 2 and Figure 4 In some embodiments, the ultrasonic bone scalpel 100 further includes a cooling pipe connected to the handle 11 or the blade head 12, which is used to deliver coolant to the cutting area. Simultaneously, the ultrasonic bone scalpel 100 also includes an absorption pipe connected to the handle 11 or the blade head 12, which is used to remove waste materials from the medullary cavity, including used coolant, tissue fluid (e.g., blood) generated during cutting, or tissue fragments. Because the wear between the blade head 12 and the bone tissue during cutting generates heat, coolant is introduced into the medullary cavity through the cooling pipe, acting on the cutting area to reduce frictional heat generation at the cutting point. After cutting is completed, the used coolant is removed using the absorption pipe. In actual use, the inlet end of the cooling pipe is connected to a cooling hose and a coolant pump to facilitate the delivery of coolant to the cooling pipe and spraying it onto the cutting position of the blade head 12 for cooling. Simultaneously, the outlet end of the absorption pipe is connected to an absorption hose and a water pump to extract coolant from the cutting position.

[0050] In one specific embodiment, the outlet end of the cooling pipe extends to the blade head 12, and the inlet end of the absorption pipe is located at the distal end of the handle 11. The end of the ultrasonic bone scalpel 100 closest to the surgeon is designated as the proximal end, and the end furthest from the surgeon is designated as the distal end.

[0051] Please continue to refer to Figure 1 , Figure 2 and Figure 4 In a preferred embodiment, the tool holder 11 has a second channel 112 extending along its own axis. The first channel 111 and the second channel 112 are spaced apart and not connected, forming a cooling pipe. Simultaneously, the tool holder 11 has a third channel 113 extending along its own axis. The third channel 113 is spaced apart from and not connected to the second channel 112 and the first channel 111, forming an absorption pipe. Essentially, along the axial direction of the tool holder 11, three spaced-apart, parallel, and non-connected channels are provided inside the tool holder 11, each with a corresponding medium and function. Furthermore, because these three channels are all located on the tool holder 11, no external structure is needed to achieve the desired effect, improving structural compactness and simplifying the structure. Additionally, since the second channel 112 and the third channel 113 are both used for conveying liquid, extending them along the axial direction of the tool holder 11 avoids detours during transport, improving transport efficiency.

[0052] Furthermore, when the second channel 112 and the third channel 113 are present, and it is necessary to connect the absorption hose and the cooling hose to the proximal end of the tool holder 11, the arrangement is basically similar to the way the delivery pipe 22 is connected to the first channel 111, so it will not be described again.

[0053] Figure 3 for Figure 2 The image provided is a top view of the ultrasonic bone scalpel. Please refer to it. Figures 2-4 As shown, in one specific embodiment, the cutter head 12 is constructed with a feed hole 121 extending along its width direction, and the second channel 112 communicates with the feed hole 121. Figure 1 Taking the placement position as an example, the length direction of the cutter head 12 is along the axial direction of the handle 11, the width direction of the cutter head 12 is perpendicular to the axial direction of the handle 11, and the cutting direction of the cutter head 12 is along the width direction of the cutter head 12. When a conveying hole 121 is provided on the cutter head 12, the coolant conveyed through the second channel 112 can act on the cutting position along the cutting direction of the cutter head 12 through the conveying hole 121, improving the accuracy of coolant spraying and achieving timely heat dissipation.

[0054] Please continue to refer to Figures 2-4As shown, further, a connecting pipe 1131 is connected to one end of the third channel 113 located on the side of the blade tip 12, and the connecting pipe 1131 protrudes from the handle 11. Here, the side of the blade tip 12 is the distal end of the handle 11, and the connecting pipe 1131 serves as the inlet end of the absorption channel. The connection pipe 1131 shortens the distance between the third channel 113 and the coolant, allowing for timely absorption of used coolant and reducing fluid accumulation in the medullary cavity, thus facilitating full exposure of the cutting field. Furthermore, the length of the connecting pipe 1131 protruding from the handle 11 is 5mm-9mm. This limitation on the protruding length of the connecting pipe 1131 not only shortens the distance between the third channel 113 and the coolant in the medullary cavity but also ensures that the connecting pipe 1131 does not interfere with surgical operations, such as interfering with the cutting of the blade tip 12 or contacting, rubbing, or even piercing the medullary cavity tissue. Based on this, the end of the connector 1131 is rounded to improve its bluntness and reduce friction with the tissue; and the protruding length of the connector 1131 is along the axial direction of the shank 11. The purpose of preventing the connector 1131 from bending is to reduce interference with the blade tip 12 or the tissue.

[0055] In one specific embodiment, the length of the connector 1131 protruding from the handle 11 is 5mm, 7mm, 8.5mm or 9mm.

[0056] In some embodiments, the ultrasonic bone scalpel 100 further includes an image acquisition component mounted on the handle 11, which is used to acquire a field of view within the medullary cavity. That is, by mounting the image acquisition component on the handle 11, when the handle 11 with the blade 12 is inserted into the patient's medullary cavity, the acquisition end of the image acquisition component will also be inserted into the patient's medullary cavity to capture images of the situation within the medullary cavity, so that the surgeon can observe the situation within the medullary cavity in a timely manner.

[0057] Please combine Figures 1-4As shown, in a preferred embodiment, the handle 11 has a fourth channel 114 extending along its own axis, and the extended end of the fourth channel 114 is bent to penetrate through the side wall of the handle 11. The fourth channel 114 is spaced apart from the first channel 111, the second channel 112, and the third channel 113 and is not interconnected with them. The image acquisition component includes a fiber optic endoscope, which can extend into the fourth channel 114 and extend out from the bent section of the fourth channel 114. Specifically, the fourth channel 114 serves as the mounting channel for the fiber optic endoscope relative to the handle 11 and guides the insertion of the fiber optic endoscope relative to the handle 11. The fiber optic endoscope itself has a certain rigidity, allowing it to move freely within the fourth channel 114 to facilitate observation of the surgical field within the medullary cavity. Moreover, the first channel 111, the second channel 112, the third channel 113, and the fourth channel 114 each correspond to different functions, and the four must be in a non-connected state. In addition, the bent section on the fourth channel 114 is located on the side close to the cutter head 12, but there is a certain distance between it and the cutter head 12 to reduce the interference between the fiber mirror and the cutter head 12.

[0058] Please continue to refer to Figure 2 As shown, in actual use, the bent section of the fourth channel 114 extends with a cover 1141. The cover 1141 forms a protective shield at the opening of the bent section, protecting the lens of the fiber optic microscope and reducing damage to the microscope from tissue splattered during cutting by the blade 12. The cover 1141 is located on the side of the bent section closest to the blade 12; the other side does not have a cover 1141 to facilitate the extension and retraction of the fiber optic microscope and ensure sufficient field of view.

[0059] Please continue to refer to Figure 1 and Figure 4 As shown, in some embodiments, the handle 11 has a fifth channel 115 extending along its own axis, and the extended end of the fifth channel 115 is bent to pass through towards the blade head 12. The fifth channel 115 is arranged at intervals with the first channel 111, the second channel 112, the third channel 113, and the fourth channel 114 and is not interconnected with them. The ultrasonic bone scalpel 100 also includes an ultrasonic driver, one end of which extends into the fifth channel 115 to connect with the blade head 12. That is, the fifth channel 115 is provided so that the ultrasonic driver can be connected to the blade head 12 via the fifth channel 115 to drive the blade head 12. In actual use, scale lines are constructed on the handle 11 so that the surgeon can observe the depth of the handle 11 into the medullary cavity, thereby determining whether the blade head 12 has reached the target cutting position.

[0060] In other embodiments, the ultrasonic driver, fiber optic endoscope, and the aforementioned structures for conveying gas and liquid can all be integrated together and then mounted relative to the handle 11. In this case, it is unnecessary to provide the aforementioned five channels on the handle 11.

[0061] Another embodiment of the present invention provides an ultrasonic cutting device, including the aforementioned ultrasonic bone scalpel 100 and an ultrasonic main unit, with the ultrasonic bone scalpel 100 connected to the ultrasonic main unit. Specifically, the ultrasonic driver within the ultrasonic bone scalpel 100 is connected to the ultrasonic main unit to drive the blade head 12 to perform ultrasonic cutting, thereby protecting soft tissue while cutting bone tissue and reducing soft tissue wounds. Simultaneously, the aforementioned cooling pipe is connected to a coolant storage tank in the ultrasonic main unit via a cooling hose, and the absorption pipe is connected to a coolant collection tank in the ultrasonic main unit via an absorption hose.

[0062] In summary, please refer to... Figure 1 The operating procedure for the ultrasonic bone scalpel 100 in actual use is as follows:

[0063] The ultrasonic bone scalpel 100 is inserted into the fracture site along the intramedullary nail channel. The position of the scalpel head 12 within the medullary cavity is determined by the graduations on the scalpel handle 11 and the X-ray images taken in the book. Once the scalpel head 12 reaches the target cutting position, the ultrasonic unit is activated, and the coolant pump and power pump 23 begin operation. The pressure bladder 21 gradually expands under the action of the power pump 23, and the scalpel head 12 cuts along the expansion direction of the pressure bladder 21. After the scalpel head 12 has cut to the approximate position, the X-ray image is used to confirm whether the precise cutting height has been achieved. Because the action of the power pump 23 is easily adjustable, the internal pressure of the pressure bladder 21 can be more precisely controlled to raise the scalpel head 12 to the target height. At the same time, the cutting situation within the medullary cavity is observed in real time using a fiberoptic endoscope to ensure that the bone surface is cut to the target position. After the osteotomy is completed, the pressure in the pressure bladder 21 is released, and the pressure bladder 21 shrinks to its initial state, allowing the ultrasonic bone scalpel 100 to be removed from the intramedullary nail channel. If multiple cuts are required, the above operation can be repeated before removing the ultrasonic bone scalpel 100.

[0064] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0065] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An ultrasonic bone scalpel, characterized in that, Used for cutting bone tissue from within the medulla oblongata, including an ultrasonic scalpel body (10) and a retaining component (20). The ultrasonic scalpel body (10) includes a handle (11) and a blade head (12) installed at one end of the handle (11). The retaining assembly (20) includes a pressure bladder (21) installed on the handle (11), and the pressure bladder (21) and the blade head (12) are arranged opposite to each other along the radial direction of the handle (11). The pressure bladder (21) can expand or contract. The handle (11) is provided with a first channel (111), a second channel (112) and a third channel (113) extending along its own axis and not communicating with each other. The first end of the first channel (111) is connected to the pressure bladder (21). The ultrasonic bone scalpel (100) also includes a cooling pipe connected to the handle (11) or the blade (12), wherein the second channel (112) forms the cooling pipe; The ultrasonic bone scalpel (100) also includes an absorption channel connected to the handle (11) or the head (12), and the third channel (113) forms the absorption channel; The cutter head (12) is constructed with a conveying hole (121) that extends through its width, and the second channel (112) is connected to the conveying hole (121).

2. The ultrasonic bone scalpel according to claim 1, characterized in that, The retaining assembly (20) also includes a delivery pipe (22) and a power pump (23). The delivery pipe (22) is connected between the power pump (23) and the pressure bladder (21). The power pump (23) controls the expansion or contraction of the pressure bladder (21) through the delivery pipe (22).

3. The ultrasonic bone scalpel according to claim 2, characterized in that, The end of the delivery pipe (22) away from the power pump (23) is connected to the second end of the first channel (111); or the end of the delivery pipe (22) away from the power pump (23) extends from the second end of the first channel (111) to the first end and is connected to the pressure bladder (21).

4. The ultrasonic bone scalpel according to claim 1, characterized in that, The third channel (113) is connected to a connector (1131) at one end on the side of the blade (12), and the connector (1131) protrudes from the handle (11).

5. The ultrasonic bone scalpel according to claim 4, characterized in that, The length of the connecting tube (1131) protruding from the handle (11) is 5mm-9mm.

6. The ultrasonic bone scalpel according to claim 1, characterized in that, The ultrasonic bone scalpel (100) also includes an image acquisition component mounted on the handle (11), which is used to acquire a field of view within the medullary cavity.

7. The ultrasonic bone scalpel according to claim 6, characterized in that, The handle (11) has a fourth channel (114) extending along its own axis inside, and the extended end of the fourth channel (114) is bent to pass through the side wall of the handle (11). The fourth channel (114) is arranged at intervals with the first channel (111), the second channel (112) and the third channel (113) and is not connected to each other. The image acquisition component includes a fiber optic endoscope that can extend into the fourth channel (114) and extend out from a bend in the fourth channel (114).

8. The ultrasonic bone scalpel according to claim 7, characterized in that, The bent section of the fourth channel (114) extends with a cover (1141).

9. The ultrasonic bone scalpel according to claim 8, characterized in that, The handle (11) is provided with a fifth channel (115) extending along its own axis, and the extended end of the fifth channel (115) is bent to pass through the blade head (12). The fifth channel (115) is arranged at intervals with the first channel (111), the second channel (112), the third channel (113), and the fourth channel (114) and is not connected to each other. The ultrasonic bone scalpel (100) also includes an ultrasonic driver, one end of which extends into the fifth channel (115) to connect with the scalpel head (12).

10. The ultrasonic bone scalpel according to any one of claims 1 to 9, characterized in that, The handle (11) has scale lines.

11. An ultrasonic cutting device, characterized in that, include: Ultrasound main unit; The ultrasonic bone scalpel according to any one of claims 1 to 10, wherein the ultrasonic bone scalpel (100) is connected to the ultrasonic host.

Images