Ultrasonic transducer handle protective sleeve and ultrasonic cutting hemostasis knife

Abstract

The utility model relates to an ultrasonic transducer handle protective sleeve and an ultrasonic cutting hemostasis knife. The ultrasonic transducer handle protective sleeve comprises a first connecting part and a second connecting part which are integrally arranged; wherein the first connecting portion can be connected to the front portion of the transducer assembly, the second connecting portion can be connected to the cable, and at the same time, only the first connecting portion is connected to the front portion of the transducer assembly or only the second connecting portion is connected to the cable. According to the ultrasonic transducer handle protective sleeve and the ultrasonic cutting hemostasis knife, the ultrasonic transducer handle protective sleeve is effectively prevented from being lost, and the problem that the front end in the transducer assembly is prone to being collided and damaged due to lack of the ultrasonic transducer handle protective sleeve for protection is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to an ultrasonic transducer handle protective sleeve and an ultrasonic cutting hemostatic knife. BACKGROUND

[0002] The ultrasonic cutting hemostatic knife is a surgical instrument for cutting and coagulating blood vessels by using ultrasonic energy, which is mainly used for cutting, separating and coagulating soft tissues. Due to its good hemostatic function, the ultrasonic cutting hemostatic knife is more and more widely used in surgical operations.

[0003] In the related art, the ultrasonic cutting hemostatic knife includes a knife rod and an ultrasonic transducer handle. The ultrasonic transducer handle is internally provided with a transducer. The front end of the transducer is connected to the knife rod. The transducer is used to convert electrical signals into ultrasonic mechanical energy and transmit the ultrasonic mechanical energy to the knife rod to achieve cutting and coagulation of tissues. During the period when the transducer is not connected to the knife rod, an ultrasonic transducer handle protective sleeve needs to be sleeved on the front end of the handle to prevent the front end of the transducer from being damaged due to collision. Therefore, before the front end of the transducer is connected to the knife rod, the ultrasonic transducer handle protective sleeve needs to be removed first. At this time, the ultrasonic transducer handle protective sleeve is easy to be lost. SUMMARY

[0004] Therefore, it is necessary to provide an ultrasonic transducer handle protective sleeve and an ultrasonic cutting hemostatic knife to prevent the ultrasonic transducer handle protective sleeve from being easily lost during use of the ultrasonic cutting hemostatic knife.

[0005] In a first aspect, the present application provides an ultrasonic transducer handle protective sleeve applied to an ultrasonic transducer handle. The transducer handle includes a transducer assembly and a cable connected to the rear part of the transducer assembly. The ultrasonic transducer handle protective sleeve is detachably connected to the transducer handle. The ultrasonic transducer handle protective sleeve includes a first connecting part and a second connecting part which are integrally arranged. Wherein,

[0006] The first connecting part is connectable to the front part of the transducer assembly. The second connecting part is connectable to the cable. At the same time, only the first connecting part is connected to the front part of the transducer assembly or only the second connecting part is connected to the cable.

[0007] The technical solutions are further described as follows:

[0008] In one of the embodiments, the ultrasonic transducer handle protective sleeve has an open end, a closed end opposite to the open end, and a side wall between the open end and the closed end. The open end, the closed end and the side wall form a semi-closed structure. The first connecting part is arranged at the open end. The second connecting part is arranged at the closed end or the side wall.

[0009] In one of the embodiments, the second connecting part is a clamping groove which transversely penetrates through both sides of the closed end or longitudinally penetrates through both sides of the side wall, and the ultrasonic transducer handle protective sleeve is clamped and fixed on the cable through the clamping groove.

[0010] In one of the embodiments, the cross-sectional shape of the clamping groove is an arc structure, and the central angle of the arc structure is α, wherein 180°<α<360°, and the inner diameter of the clamping groove matches the outer diameter of the cable.

[0011] In one of the embodiments, the ultrasonic transducer handle protective sleeve comprises an open end and a closed end which are oppositely arranged, the open end is detachably connected with the transducer assembly, the clamping groove is arranged at the closed end, and the clamping groove penetrates through both sides of the closed end.

[0012] In one of the embodiments, the closed end is further provided with two grooves, and the two grooves are respectively located at both sides of the clamping groove, and the extension direction of the grooves is consistent with the extension direction of the clamping groove.

[0013] In one of the embodiments, the grooves are arc grooves.

[0014] In one of the embodiments, the side wall is provided with a first protruding part, the clamping groove is arranged in the first protruding part, and the clamping groove penetrates through both ends of the first protruding part along the direction from the open end to the closed end.

[0015] In one of the embodiments, the ultrasonic transducer handle protective sleeve has a first accommodating cavity, the front part of the transducer assembly is accommodated in the first accommodating cavity, the first accommodating cavity is provided with a first support part and a second support part, the first support part is the end part of the first accommodating cavity which faces the front part of the transducer assembly, the second support part extends towards the center along the inner wall of the first accommodating cavity in the circumferential direction, the diameter of the first support part is greater than the diameter of the second support part, and the first accommodating cavity, the first support part and the second support part jointly form the first connecting part.

[0016] In one of the embodiments, the ultrasonic transducer handle protective sleeve has a second accommodating cavity which is located inside the first accommodating cavity, the amplitude rod of the transducer assembly is accommodated in the second accommodating cavity, the second accommodating cavity is provided with a third support part, the third support part is the end part of the second accommodating cavity which faces the front part of the transducer assembly, and the first accommodating cavity, the first support part, the second support part, the second accommodating cavity and the third support part jointly form the first connecting part.

[0017] In a second aspect, the application further provides an ultrasonic cutting and hemostatic knife, comprising a knife rod, an ultrasonic transducer handle and the ultrasonic transducer handle protective sleeve described above, the transducer assembly end away from the cable is selectively connected with the knife rod or the ultrasonic transducer handle protective sleeve, and when the knife rod is connected with the ultrasonic transducer handle, the ultrasonic transducer handle protective sleeve is detached from the ultrasonic transducer handle and fixed on the cable.

[0018] In the ultrasonic transducer handle protective sleeve and the ultrasonic cutting and hemostatic knife described above, the ultrasonic transducer handle protective sleeve is integrally provided with the first connecting part and the second connecting part, when the transducer handle is not connected to the knife rod, the ultrasonic transducer handle protective sleeve can be connected to the front part of the transducer assembly through the first connecting part to effectively protect the front end structure of the transducer assembly. After the transducer handle is connected to the knife rod, the ultrasonic transducer handle protective sleeve can be detached from the transducer assembly and connected to the cable through the second connecting part, thereby effectively preventing the ultrasonic transducer handle protective sleeve from being lost and avoiding the problem that the front part of the transducer assembly is easily damaged due to the lack of protection of the ultrasonic transducer handle protective sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which form a part of the present application, are intended to provide further understanding of the present application, and are used to interpret the application together with the description. The accompanying drawings are not intended to limit the application in any way.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the accompanying drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the accompanying drawings in the following description are only some embodiments of the present application, and other accompanying drawings can be obtained by those skilled in the art without any creative effort.

[0021] In addition, the drawings are not drawn in a 1:1 ratio, and the relative sizes of the various elements are only exemplarily drawn in the drawings, but not necessarily drawn in true proportions. In the drawings:

[0022] Figure 1 Structure schematic view of the ultrasonic transducer handle protective sleeve of an embodiment.

[0023] Figure 2 Structure schematic view of the ultrasonic transducer handle protective sleeve of an embodiment. Figure 1 Side view of the ultrasonic transducer handle protective sleeve shown in the embodiment.

[0024] Figure 3 Structure schematic view of the ultrasonic transducer handle of an embodiment when the ultrasonic transducer handle protective sleeve is connected to the transducer assembly.

[0025] Figure 4 Structure schematic view of the ultrasonic transducer handle of an embodiment when the ultrasonic transducer handle protective sleeve is connected to the transducer assembly. Figure 3The diagram shows the structure of the ultrasonic transducer handle connected to the cable via the ultrasonic transducer handle protective sleeve.

[0026] Figure 5 This is a schematic diagram of the structure of the ultrasonic transducer handle protective sleeve according to another embodiment.

[0027] Figure 6 for Figure 5 The image shows a side view of the ultrasonic transducer handle protective sleeve.

[0028] Figure 7 This is a schematic diagram of the structure of an ultrasonic transducer handle connected to the transducer assembly, according to another embodiment.

[0029] Figure 8 for Figure 7 The diagram shows the structure of the ultrasonic transducer handle connected to the cable via the ultrasonic transducer handle protective sleeve.

[0030] Figure 9 This is a schematic diagram of the structure of the open end of the ultrasonic transducer handle protective sleeve according to one embodiment.

[0031] Explanation of reference numerals in the attached figures:

[0032] 10. Ultrasonic transducer handle protective sleeve; 101. First support part; 102. Second support part; 103. Third support part; 11. Open end; 111. First receiving cavity; 112. Second receiving cavity; 12. Side wall; 13. Closed end; 14. Slot; 15. Groove; 16. First protrusion; 20. Transducer assembly; 21. Housing; 22. Transducer; 30. Cable. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0034] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0035] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," 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 expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" 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. Similarly, "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.

[0038] It should be noted that if 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. If 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. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0039] Specifically, one embodiment of this application provides an ultrasonic cutting hemostatic knife. See also... Figure 3 One embodiment of the ultrasonic cutting hemostatic knife includes a blade (not shown), an ultrasonic transducer handle, and a handle protective sleeve. The ultrasonic transducer handle includes a transducer assembly 20 and a cable 30 connected to the rear of the transducer assembly 20. The cable 30 is connected to the rear of the transducer assembly 20, and the front of the transducer assembly 20 can be selectively connected to either the blade or the ultrasonic transducer handle protective sleeve 10. Specifically, when the ultrasonic transducer handle protective sleeve 10 is connected to the transducer assembly 20, the ultrasonic transducer handle protective sleeve can protect the transducer inside the transducer assembly 20. When it is necessary to connect the blade and the transducer assembly 20, the ultrasonic transducer handle protective sleeve 10 can be removed from the front of the transducer assembly 20, and the front of the transducer assembly 20 can be connected to the blade so that the transducer assembly 20 can drive the blade.

[0040] As mentioned earlier, the ultrasonic transducer handle protective sleeve 10 is easily lost after being removed from the transducer assembly 20. Therefore, after the surgery is completed and the scalpel is separated from the transducer assembly 20, the front end of the transducer assembly 20 will lack the protection of the ultrasonic transducer handle protective sleeve 10, making it susceptible to damage from impacts.

[0041] Based on this, one embodiment of this application also provides a protective sleeve for an ultrasonic transducer handle, which can be applied to the aforementioned ultrasonic transducer handle. See [link to relevant documentation]. Figures 1 to 4 Specifically, the ultrasonic transducer handle protective sleeve 10 includes an integrally formed first connecting part and second connecting part; wherein, the first connecting part can be connected to the front part of the transducer assembly 20, and the second connecting part can be connected to the cable 30, and at the same time, only the first connecting part is connected to the front part of the transducer assembly 20 or only the second connecting part is connected to the cable 30.

[0042] In the aforementioned ultrasonic transducer handle protective sleeve and ultrasonic cutting hemostatic knife, the ultrasonic transducer handle protective sleeve 10 is integrally provided with a first connecting part and a second connecting part. When the transducer handle is not connected to the knife bar, the ultrasonic transducer handle protective sleeve 10 can be connected to the front of the transducer assembly 20 through the first connecting part to effectively protect the front end structure of the transducer assembly 20. When the transducer handle is connected to the knife bar, the ultrasonic transducer handle protective sleeve 10 can be detached from the transducer assembly 20 and connected to the cable 30 through the second connecting part, thereby effectively preventing the ultrasonic transducer handle protective sleeve 10 from being lost and avoiding the problem of the front end of the transducer assembly 20 being easily damaged by impact due to the lack of protection from the ultrasonic transducer handle protective sleeve 10.

[0043] See Figure 1 as well as Figure 2 Optionally, in one embodiment, the ultrasonic transducer handle protective sleeve 10 has an open end 11, a closed end 13 opposite to the open end, and a sidewall 12 located between the open end 11 and the closed end 13. The open end 11, the closed end 13, and the sidewall 12 together form a semi-closed structure. A first connecting portion is provided at the open end 11, and a second connecting portion is provided at the closed end. Specifically, the open end 11 of the ultrasonic transducer handle protective sleeve 10 has an opening for the front part of the transducer assembly 20 to be inserted. The closed end 13 of the ultrasonic transducer handle protective sleeve 10 is a closed structure to prevent external moisture or dust and other impurities from contaminating the transducer 22 inside the transducer assembly 20. By providing a second connecting portion at the closed end 13 of the ultrasonic transducer handle protective sleeve 10, the space of the closed end 13 is fully utilized, the structure is simple, and after the second connecting portion is separated from the cable 30, it does not affect the connection between the first connecting portion located at the open end 11 and the transducer assembly 20.

[0044] See Figure 5 as well as Figure 6 In another embodiment, the second connecting part can also be disposed on the side wall 12 of the ultrasonic transducer handle protective sleeve 10, so that the second connecting part is separated from the cable 30 without affecting the connection between the first connecting part located at the opening end 11 and the transducer assembly 20.

[0045] Optionally, the second connecting part is a slot 14, see Figure 1 In one embodiment, the slot 14 extends laterally through both sides of the closed end, see [reference]. Figure 5In another embodiment, the slot 14 extends longitudinally through both sides of the sidewall, allowing the ultrasonic transducer handle protective sleeve 10 to be secured to the cable 30 via the slot 14. By creating the slot 14 on the ultrasonic transducer handle protective sleeve 10, it is possible to secure the ultrasonic transducer handle protective sleeve 10 to the cable 30 without adding additional connecting components, resulting in a simple structure and low cost. It is worth noting that in other embodiments, the second connecting part can also be a strap, which can be used to bind the ultrasonic transducer handle protective sleeve 10 to the cable 30; or the second connecting part can be a clip, which clamps the ultrasonic transducer handle protective sleeve 10 to the cable 30; or the second connecting part can be tape or Velcro, which adhesively attaches the ultrasonic transducer handle protective sleeve 10 to the cable 30, thus also achieving the goal of securing the ultrasonic transducer handle protective sleeve 10 to the cable 30.

[0046] See Figure 2 In one embodiment, the slot 14 has a circular arc cross-sectional shape, and the central angle corresponding to the circular arc is α, where 180° < α < 360°. The inner diameter of the slot 14 matches the outer diameter of the cable 30. Here, "the cross-sectional shape of the slot 14" refers to the shape of the cross-section of the slot 14 perpendicular to its length. In other words, the slot 14 is a circular arc groove, which better matches the cylindrical cable 30. After the ultrasonic transducer handle protective sleeve 10 is fixed to the cable 30 by the slot 14, the groove wall of the slot 14 can fit against the outer wall of the cable 30, thereby improving the connection stability between the ultrasonic transducer handle protective sleeve 10 and the cable 30. Furthermore, by configuring the central angle α corresponding to the arc-shaped structure of the slot 14 to be 180°<α<360°, it can effectively ensure that the cable 30 cannot easily come out of the slot 14 after being inserted into it, thereby ensuring that the ultrasonic transducer handle protective sleeve 10 will not easily detach from the cable 30, and further improving the connection stability between the ultrasonic transducer handle protective sleeve 10 and the cable 30.

[0047] See also Figure 2 Optionally, in one embodiment, when the slot 14 is formed at the closed end 13, the closed end 13 is further provided with two grooves 15, which are respectively located on both sides of the slot 14, and the extending direction of the grooves 15 is consistent with the extending direction of the slot 14. By providing grooves 15 on both sides of the slot 14, the thickness of the side walls of the slot 14 can be effectively reduced, making it easier for the side walls of the slot 14 to undergo elastic deformation, so as to facilitate the insertion of the cable 30 into the slot 14.

[0048] Furthermore, the arc-shaped groove of the groove 15 makes the edge transition of the ultrasonic transducer handle protective sleeve 10 smoother, which is beneficial to the injection molding and demolding process of the ultrasonic transducer handle protective sleeve 10 and reduces the manufacturing difficulty.

[0049] See Figures 5 to 8 In the embodiment where the slot 14 is formed in the side wall 12, the side wall 12 is provided with a first protrusion 16, and the slot 14 is formed in the first protrusion 16. The slot 14 passes through both ends of the first protrusion 16 in the direction from the open end 11 to the closed end 13. This can prevent the opening of the groove 15 from reducing the wall thickness of the side wall 12 of the ultrasonic transducer handle protective sleeve 10, thereby ensuring the structural strength of the ultrasonic transducer handle protective sleeve 10.

[0050] See Figure 8 In one embodiment, the transducer assembly 20 includes a hollow housing 21 and a transducer 22 disposed within the housing 21. A threaded connection section 212 protrudes from the front end of the housing 21, forming a step 211 between the front end of the housing 21 and the threaded connection section 212. The transducer 22 includes a transducer body and an amplitude transformer 221 protruding from the front end of the transducer body. The amplitude transformer 221 extends through the front end of the housing 21. A cable 30 passes through the rear end of the housing 21 and is electrically connected to the transducer 22. An ultrasonic transducer handle protective sleeve 10 is detachably connected to the front end of the housing 21 and surrounds the front end of the transducer 22, thereby effectively protecting the front end of the transducer 22 after the ultrasonic transducer handle protective sleeve 10 is connected to the housing 21. The transducer 22 is used to convert the electrical signal transmitted by the cable 30 into ultrasonic mechanical waves and transmit them to the tool holder. Optionally, in one embodiment, the ultrasonic transducer handle protective sleeve 10 is threadedly connected to the threaded connection section 212 of the housing 21.

[0051] Optionally, see Figure 9 In one embodiment, the ultrasonic transducer handle protective sleeve 10 has a first receiving cavity 111, in which the front part of the transducer assembly 20 is received. A first support portion 101 and a second support portion 102 are disposed within the first receiving cavity. The first support portion 101 is the end of the first receiving cavity 111 facing the front part of the transducer assembly 20. The second support portion 102 extends circumferentially towards the center along the inner wall of the first receiving cavity 111. The diameter of the first support portion 101 is larger than the diameter of the second support portion 102. The first receiving cavity 111, the first support portion 101, and the second support portion 102 together form a first connecting portion. Specifically, in conjunction with... Figure 8 The first support 101 is used to abut against the stepped part 211 of the transducer assembly 20, and the second support 102 is used to abut against the front end of the threaded connection section 212, thereby achieving precise positioning of the connection between the ultrasonic transducer handle protective sleeve 10 and the transducer assembly 20, and preventing the ultrasonic transducer handle protective sleeve 10 from squeezing the amplitude rod 221 of the transducer assembly 20.

[0052] Furthermore, the ultrasonic transducer handle protective sleeve 10 also has a second receiving cavity 112, which is located inside the first receiving cavity 111. The amplitude transformer rod 221 of the transducer assembly 20 is received in the second receiving cavity 112. The second receiving cavity 112 is provided with a third support portion 103, which is the end of the second receiving cavity 112 facing the front of the transducer assembly 20. The first receiving cavity 111, the first support portion 101, the second support portion 102, the second receiving cavity 112, and the third support portion 103 together form the first connecting portion. Specifically, the third support portion 103 is used to abut against the transducer body, thereby preventing the amplitude transformer rod 221 of the transducer assembly 20 from being inserted too far and colliding with the bottom wall of the second receiving cavity 112.

[0053] 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.

[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A protective sleeve for an ultrasonic transducer handle, applied to an ultrasonic transducer handle, the transducer handle comprising a transducer assembly and a cable connected to the rear of the transducer assembly; characterized in that, The ultrasonic transducer handle protective sleeve is detachably connected to the transducer handle, and the ultrasonic transducer handle protective sleeve includes: an integrally formed first connecting part and a second connecting part; wherein... The first connection portion can be connected to the front of the transducer assembly, and the second connection portion can be connected to the cable. At any given time, only the first connection portion is connected to the front of the transducer assembly or only the second connection portion is connected to the cable.

2. The ultrasonic transducer handle protective sleeve according to claim 1, characterized in that, The ultrasonic transducer handle protective sleeve has an open end, a closed end opposite to the open end, and a side wall located between the open end and the closed end. The open end, the closed end, and the side wall together form a semi-closed structure. The first connecting part is disposed at the open end, and the second connecting part is disposed at the closed end or the side wall.

3. The ultrasonic transducer handle protective sleeve according to claim 2, characterized in that, The second connecting part is a slot, which extends laterally through both sides of the closed end or longitudinally through both sides of the side wall. The ultrasonic transducer handle protective sleeve is fixed to the cable by the slot.

4. The ultrasonic transducer handle protective sleeve according to claim 3, characterized in that, The slot has a circular arc shape in cross-section, and the central angle corresponding to the circular arc is α, where 180° < α < 360°. The inner diameter of the slot matches the outer diameter of the cable.

5. The ultrasonic transducer handle protective sleeve according to claim 3, characterized in that, The closed end is provided with two grooves, which are located on both sides of the slot, and the extending direction of the grooves is consistent with the extending direction of the slot.

6. The ultrasonic transducer handle protective sleeve according to claim 5, characterized in that, The groove is an arc-shaped groove.

7. The ultrasonic transducer handle protective sleeve according to claim 3, characterized in that, The side wall is provided with a first protrusion, and the slot extends through both ends of the first protrusion along the direction from the open end to the closed end.

8. The ultrasonic transducer handle protective sleeve according to claim 1, characterized in that, The ultrasonic transducer handle protective sleeve has a first receiving cavity, and the front part of the transducer assembly is received in the first receiving cavity. The first receiving cavity is provided with a first support part and a second support part. The first support part is the end of the first receiving cavity facing the front part of the transducer assembly. The second support part extends circumferentially towards the center along the inner wall of the first receiving cavity. The diameter of the first support part is larger than the diameter of the second support part. The first receiving cavity, the first support part and the second support part together form the first connecting part.

9. The ultrasonic transducer handle protective sleeve according to claim 8, characterized in that, The ultrasonic transducer handle protective sleeve has a second receiving cavity, which is located inside the first receiving cavity. The amplitude rod of the transducer assembly is received in the second receiving cavity. The second receiving cavity is provided with a third support portion, which is the end of the second receiving cavity facing the front of the transducer assembly. The first receiving cavity, the first support portion, the second support portion, the second receiving cavity, and the third support portion together form the first connecting portion.

10. An ultrasonic cutting hemostatic knife, characterized in that, The device includes a blade, an ultrasonic transducer handle, and an ultrasonic transducer handle protective sleeve according to any one of claims 1-9. One end of the transducer assembly facing away from the cable is selectively connected to the blade or the ultrasonic transducer handle protective sleeve. When the blade is connected to the ultrasonic transducer handle, the ultrasonic transducer handle protective sleeve is detached from the ultrasonic transducer handle and fixed to the cable.

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