Anti-reverse control mechanism for ultrasonic scalpel head

Abstract

The utility model relates to medical instrument technical field discloses a kind of anti-reverse control mechanism of ultrasonic operating knife head, applied to ultrasonic operating knife, the ultrasonic operating knife includes handle body, transducer and torque wrench, the anti-reverse control mechanism includes ratchet wheel and one-way limiting piece, the ratchet wheel is fixedly installed in torque wrench and is located in one end in handle body, the one-way limiting piece is installed in handle body, for only the ratchet wheel can be unidirectional rotation. The utility model can solve the problem in the prior art, the reverse force generated by winding connecting line, easy to drive knife lever mechanism reverse rotation, influence operation.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anti-reverse control mechanism for an ultrasonic surgical scalpel tip. Background Technology

[0002] An ultrasonic scalpel is an advanced surgical instrument that uses ultrasonic energy for tissue cutting and hemostasis. It combines mechanical vibration and thermal effects and is widely used in minimally invasive surgery, featuring precision, safety, and high efficiency.

[0003] In existing technologies, ultrasonic scalpels mainly include a scalpel shaft mechanism, a handle body, a transducer, and a torque wrench. The torque wrench is connected to the scalpel shaft mechanism for rotation, and the handle mechanism has a connection cable at its tail for connecting an external power source to the ultrasonic scalpel. Examples include a replaceable scalpel for minimally invasive surgery disclosed in Chinese Patent [Publication No.: CN115005932A] and an integrated ultrasonic scalpel disclosed in Chinese Patent [Publication No.: CN209404883U].

[0004] During use, it was found that when rotating the torque wrench, the blade mechanism drives the transducer of the handle mechanism to rotate synchronously, and the connecting wire will get wrapped around the transducer. The reverse force generated by the wrapped connecting wire can easily cause the blade mechanism to rotate in the opposite direction, affecting the surgical operation. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide an anti-reverse control mechanism for the ultrasonic scalpel tip, which solves the problem in the prior art where the reverse force generated by the tangled connecting wire easily drives the scalpel mechanism to rotate in the opposite direction, affecting the surgical operation.

[0006] This utility model solves the above-mentioned technical problems through the following technical means:

[0007] An anti-reverse control mechanism for an ultrasonic scalpel tip is provided, which is applied to an ultrasonic scalpel. The ultrasonic scalpel includes a handle body, a transducer, and a torque wrench. The anti-reverse control mechanism includes a ratchet and a one-way limiting member. The ratchet is fixedly installed at one end of the torque wrench located inside the handle body. The one-way limiting member is installed inside the handle body to ensure that the ratchet can only rotate in one direction.

[0008] By setting up the above structure, when the winding connecting line generates a reversing force, forcing the scalpel mechanism to rotate in the opposite direction, a one-way limiting component is used to limit the ratchet in one direction. By restricting the one-way rotation of the torque wrench, the reverse rotation of the scalpel mechanism is prevented, thus avoiding interference with the surgical operation.

[0009] Furthermore, the one-way limiting component includes a pawl, which includes a limiting end, a mounting end, and a reset end. The pawl is rotatably mounted on the inner side wall of the handle body through the mounting end. The limiting end engages with the ratchet. A tension spring is provided between the reset end and the handle body, and the tension spring is used to force the limiting end to engage with the ratchet.

[0010] By setting the above structure, when it is necessary to release the one-way limit of the ratchet by the one-way limit component, the reset end is pressed towards the ratchet to disengage the limit end from the ratchet, thus unlocking the one-way limit. The operation is simple, convenient and quick.

[0011] Furthermore, it also includes a mounting base, which is fixedly installed on the inner side wall of the handle body. The mounting base is provided with a first mounting ear, and the mounting end is rotatably installed on the first mounting ear. The mounting base is provided with a first connecting post, and the reset end is provided with a second connecting post. The two ends of the tension spring are respectively fixedly connected to the first connecting post and the second connecting post.

[0012] By setting the above structure, it is easy to achieve a rotatable connection between the pawl and the inner wall of the handle body.

[0013] Furthermore, it also includes an unlocking drive component, which is installed on the handle body. The unlocking drive component includes an output end located inside the handle body. The output end abuts against the reset end. When the output end moves toward the ratchet, the output end forces the pawl to rotate against the tension of the tension spring, causing the limiting end to disengage from the ratchet.

[0014] By setting up the above structure and changing the position of the output end by operating the unlocking drive component, the pawl's one-way lock on the ratchet can be released without directly moving the ratchet, further improving the convenience of operation.

[0015] Furthermore, the unlocking drive assembly also includes a mounting post and a locking element. The mounting post is slidably mounted on the side wall of the handle body, with one end of the mounting post located inside the handle body and the other end located outside the handle body. The output end is fixedly disposed at the end of the mounting post located inside the handle body. A compression spring is sleeved on the mounting post, with the spring force of the compression spring being greater than the tension of the tension spring. One end of the compression spring abuts against the inner side wall of the handle body, and the other end abuts against the output end. The compression spring is used to give the mounting post a tendency to move in the ratchet direction. The locking element is disposed between the mounting post and the outer side wall of the handle body, and the locking element is used to restrict the movement of the mounting post in the ratchet direction.

[0016] By setting the above structure, after operating the locking component and releasing the restriction of the locking component on the mounting post, the compressed spring causes the mounting post to move towards the ratchet, thereby pressing the reset end towards the ratchet and disengaging the limiting end from the ratchet, thus unlocking the one-way limiting and facilitating one-handed operation.

[0017] Furthermore, the locking element includes a trigger with a slot along the length of the mounting post. The mounting post has a hinge shaft at one end located outside the handle body. The mounting post is located within the slot, and the trigger is rotatably connected to the hinge shaft. When the trigger and the mounting post are on the same straight line, the end of the trigger with the slot abuts against the handle body, and the trigger restricts the mounting post from moving towards the ratchet.

[0018] By setting up the above structure, rotating the trigger to be in the same straight line as the mounting post will engage the pawl with the ratchet. Pulling the trigger will cause the trigger and the mounting post to be out of line, and under the action of the compression spring, the pawl and the ratchet will disengage. Locking and unlocking operations can be performed with one finger.

[0019] Furthermore, the end of the trigger away from the slot is provided with an arc surface, and both the upper and lower ends of the end wall of the trigger near the slot are provided with chamfers.

[0020] Furthermore, it also includes a reset assembly, which includes a spring and a fixed seat. The ratchet has a mounting ring at one end near the torque wrench, the spring is wound around the mounting ring, and the fixed seat is fixedly installed on the inner wall of the handle body. The inner end of the spring is connected to the mounting ring, and the outer end of the spring is connected to the fixed seat.

[0021] By setting up the above structure, the ratchet can be automatically reset, and the connecting wire can be untangled or twisted.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model, by setting a ratchet and a one-way limiting component, when the winding connecting line generates a reverse force, forcing the knife bar mechanism to rotate in the opposite direction, uses the one-way limiting component to limit the ratchet in one direction. By restricting the one-way rotation of the torque wrench, the reverse rotation of the knife bar mechanism is avoided, thus preventing it from affecting the surgical operation.

[0024] 2. This utility model, by setting a pawl and a tension spring, allows for the release of the one-way limit on the ratchet by pressing the reset end towards the ratchet, thereby disengaging the limit end from the ratchet and unlocking the one-way limit. The operation is simple, convenient, and quick.

[0025] 3. This utility model, by setting an unlocking drive component, allows the pawl to engage with the ratchet when the trigger is rotated to be on the same straight line as the mounting post. Pulling the trigger causes the trigger and the mounting post to be on different straight lines, and under the action of the compression spring, the pawl and the ratchet can be disengaged. Locking and unlocking operations can be achieved with a single finger.

[0026] 4. This utility model, by setting a spring and a fixing seat, facilitates the automatic reset of the ratchet and untangles the connecting wire from winding or twisting. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of an ultrasonic surgical scalpel tip anti-reverse control mechanism according to this utility model;

[0028] Figure 2 This is a schematic diagram showing the disassembled structure of an ultrasonic surgical scalpel tip anti-reverse control mechanism according to this utility model;

[0029] Figure 3 This is a schematic diagram of the internal structure of an ultrasonic surgical scalpel tip anti-reverse control mechanism installed on the handle body according to this utility model;

[0030] Figure 4 This is a schematic diagram of the external structure of an ultrasonic surgical scalpel tip anti-reverse control mechanism mounted on the handle body according to this utility model;

[0031] Figure 5 yes Figure 4 A magnified structural diagram of A in the middle;

[0032] in,

[0033] 11. Handle body; 12. Transducer; 13. Torque wrench; 14. Tool holder mechanism;

[0034] 2. Ratchet; 21. Mounting ring;

[0035] 3. One-way limiting component; 31. Limiting end; 32. Mounting end; 33. Reset end; 331. Second connecting post; 34. Tension spring;

[0036] 4. Mounting base; 41. First mounting ear; 42. First connecting post;

[0037] 51. Output end; 52. Mounting post; 521. Hinge shaft; 53. Locking element; 531. Slot; 54. Compression spring;

[0038] 61. Clockwork spring; 62. Mounting bracket. Detailed Implementation

[0039] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. It should be noted that the illustrations provided in the following embodiments are for illustrative purposes only and represent schematic diagrams, not actual pictures. They should not be construed as limiting the utility model. To better illustrate the embodiments of this utility model, some components in the figures may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable that some well-known structures and their descriptions may be omitted in the figures for those skilled in the art.

[0040] In the figures of this utility model embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figure, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe the positional relationship in the figure are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0041] like Figures 1-5 As shown, this utility model discloses an anti-reverse rotation control mechanism for an ultrasonic scalpel tip, applied to an ultrasonic scalpel. The ultrasonic scalpel includes a handle body 11, a transducer 12, and a torque wrench 13. The anti-reverse rotation control mechanism includes a ratchet 2 and a one-way limiting member 3. The ratchet 2 is fixedly installed at one end of the torque wrench 13 located within the handle body 11. In this embodiment, the ratchet 2 is assembled to the end of the torque wrench 13 located within the handle body via a keyway interference fit. The one-way limiting member 3 is installed within the handle body 11 to ensure that the ratchet 2 can only rotate in one direction. Specifically, in this embodiment, the one-way limiting member 3 restricts the ratchet 2 to rotate clockwise. When rotating counterclockwise, the one-way limiting member 3 will block the ratchet 2. During use, when the winding connecting wire generates a reverse force, forcing the scalpel lever mechanism 14 to rotate counterclockwise, the one-way limiting member 3 uses one-way limiting to restrict the ratchet 2. By restricting the one-way rotation of the torque wrench 13, the counterclockwise rotation of the scalpel lever mechanism 14 is prevented, thus avoiding interference with the surgical operation.

[0042] In this embodiment, the one-way limiting component 3 includes a pawl, which comprises a limiting end 31, a mounting end 32, and a reset end 33. The pawl is rotatably mounted on the inner wall of the handle body 11 via the mounting end 32. The limiting end 31 engages with the ratchet 2. A tension spring 34 is provided between the reset end 33 and the handle body 11, which forces the limiting end 31 to engage with the ratchet 2. In other embodiments, the one-way limiting component 3 can also be a limiting spring. In this embodiment, by providing a pawl and a tension spring 34, on the one hand, the service life is longer; on the other hand, when it is necessary to release the one-way limiting component 3 from the ratchet 2, the reset end 33 is pressed towards the ratchet 2, causing the limiting end 31 to disengage from the ratchet 2, thus unlocking the one-way limiting. The operation is simple, convenient, and quick.

[0043] In this embodiment, a mounting base 4 is also included. The mounting base 4 is fixedly installed on the inner wall of the handle body 11. In this embodiment, the mounting base 4 is fixedly installed on the inner wall of the handle body 11 by fixing bolts. In other embodiments, the mounting base 4 and the handle body 11 can also be fixedly connected by riveting or welding. The mounting base 4 is provided with a first mounting ear 41, and the mounting end 32 is rotatably installed on the first mounting ear 41. The mounting base 4 is provided with a first connecting post 42, and the reset end 33 is provided with a second connecting post 331. The two ends of the tension spring 34 are fixedly connected to the first connecting post 42 and the second connecting post 331 respectively, so as to facilitate the rotatable connection between the pawl and the inner wall of the handle body 11.

[0044] This embodiment also includes an unlocking drive component, which is mounted on the handle body 11. The unlocking drive component includes an output end 51 located inside the handle body 11 and abuts against the reset end 33. When the output end 51 moves towards the ratchet 2, it forces the pawl to rotate against the tension of the tension spring 34, causing the limiting end 31 to disengage from the ratchet 2. In some other embodiments, the unlocking drive component may not be provided, and the reset end 33 of the pawl can be directly moved with a thin stick. This embodiment, by providing an unlocking drive component, can release the pawl's one-way lock on the ratchet 2 by changing the position of the output end 51 through operation of the unlocking drive component, without directly moving the pawl, thus further improving the convenience of operation.

[0045] In this embodiment, the unlocking drive assembly further includes a mounting post 52 and a locking element 53. The mounting post 52 is slidably mounted on the side wall of the handle body 11. One end of the mounting post 52 is located inside the handle body 11, and the other end is located outside the handle body 11. The output end 51 is fixedly disposed at the end of the mounting post 52 located inside the handle body 11. A compression spring 54 is sleeved on the mounting post 52. The elastic force of the compression spring 54 is greater than the tension force of the tension spring 34. One end of the compression spring 54 abuts against the inner side wall of the handle body 11, and the other end abuts against the output end 51. The compression spring 54 is used to give the mounting post 52 a tendency to move towards the ratchet 2. The locking element 53 is disposed between the mounting post 52 and the outer side wall of the handle body 11. The locking element 53 is used to restrict the movement of the mounting post 52 towards the ratchet 2. In some other embodiments, the locking element 53 may not be necessary. The mounting post 52 can be locked simply by providing a threaded section on the mounting post 52 and a corresponding threaded groove on the handle body 11. In this embodiment, by setting a locking member 53, operating the locking member 53, and releasing the restriction of the locking member 53 on the mounting post 52, the compression spring 54 causes the mounting post 52 to move towards the ratchet 2, thereby pressing the reset end 33 towards the ratchet 2, so that the limiting end 31 is disengaged from the ratchet 2, thus unlocking the one-way limiting and facilitating one-handed operation.

[0046] In this embodiment, the locking element 53 includes a trigger. A slot 531 is formed on the trigger along the length of the mounting post 52. A hinge shaft 521 is provided at one end of the mounting post 52 located outside the handle body 11. The mounting post 52 is located within the slot 531, and the trigger is rotatably connected to the hinge shaft 521. When the trigger and the mounting post 52 are on the same straight line, the end of the trigger with the slot 531 abuts against the handle body 11, restricting the mounting post 52 from moving closer to the ratchet 2. In other embodiments, the locking element 53 can also be configured as a limiting pin or similar structure. In this embodiment, by providing a trigger, when in use, rotating the trigger to be on the same straight line as the mounting post 52 engages the pawl with the ratchet 2. Pulling the trigger, causing the trigger and mounting post 52 to be on different straight lines, allows the pawl to disengage from the ratchet 2 under the action of the compression spring 54. Locking and unlocking operations can be performed with a single finger.

[0047] In this embodiment, the end of the trigger away from the slot 531 is provided with an arc surface to facilitate finger operation. Both the upper and lower ends of the end wall of the trigger near the slot 531 are provided with chamfers to facilitate rotation of the trigger relative to the handle body 11.

[0048] In this embodiment, a reset assembly is also included. The reset assembly includes a spring 61 and a fixing seat 62. A mounting ring 21 is provided at one end of the ratchet 2 near the torque wrench 13. The spring 61 is wound around the mounting ring 21. The fixing seat 62 is fixedly installed on the inner wall of the handle body 11. The inner end of the spring 61 is connected to the mounting ring 21, and the outer end of the spring 61 is connected to the fixing seat 62. After the unlocking drive assembly releases the pawl's one-way limit on the ratchet 2, the spring 61 causes the ratchet 2 to automatically reset, unwinding or untwisting the connecting wire.

[0049] The working principle of this utility model is as follows:

[0050] In use, rotate the trigger until it is aligned with the mounting post 52, causing the tension spring 34 to engage the limiting end 31 with the ratchet 2. When the torque wrench 13 is rotated clockwise, it drives the ratchet 2 to rotate clockwise. When the ratchet 2 rotates clockwise, it drives the outer end of the spring 61 to move, thereby compressing the spring 61. Because the limiting end 31 of the pawl restricts the ratchet 2 to rotate only clockwise, the reverse force generated by the wound connecting wire and the elastic force of the spring 61 will not cause the ratchet 2 to rotate counterclockwise, thus preventing the counterclockwise rotation of the scalpel mechanism 14 from affecting the surgical operation.

[0051] When it is necessary to untangle or twist the connecting wire, pull the trigger so that the trigger and mounting post 52 are not on the same straight line. Under the action of the compression spring 54, the compression spring 54 moves the mounting post 52 towards the ratchet 2, thereby pressing the reset end 33 towards the ratchet 2, causing the limiting end 31 to disengage from the ratchet 2, and releasing the pawl's one-way limiting of the ratchet 2. The elastic force of the spring spring 61 forces the ratchet 2 to rotate counterclockwise to reset, thereby untangling or twisting the connecting wire.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model. Technologies, shapes, and structural parts not described in detail in this utility model are all known technologies.

Claims

1. An anti-reverse control mechanism for an ultrasonic scalpel tip, applied to an ultrasonic scalpel, the ultrasonic scalpel comprising a handle body (11), a transducer (12), and a torque wrench (13), characterized in that: The anti-reverse control mechanism includes a ratchet (2) and a one-way limiting member (3). The ratchet (2) is fixedly installed at one end of the torque wrench (13) located inside the handle body (11). The one-way limiting member (3) is installed inside the handle body (11) to make the ratchet (2) rotate only in one direction.

2. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 1, characterized in that: The one-way limiting member (3) includes a pawl, which includes a limiting end (31), a mounting end (32) and a reset end (33). The pawl is rotatably mounted on the inner wall of the handle body (11) through the mounting end (32). The limiting end (31) engages with the ratchet (2). A tension spring (34) is provided between the reset end (33) and the handle body (11). The tension spring (34) is used to force the limiting end (31) to engage with the ratchet (2).

3. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 2, characterized in that: It also includes a mounting base (4), which is fixedly installed on the inner side wall of the handle body (11). The mounting base (4) is provided with a first mounting ear (41), and the mounting end (32) is rotatably installed on the first mounting ear (41). The mounting base (4) is provided with a first connecting post (42), and the reset end (33) is provided with a second connecting post (331). The two ends of the tension spring (34) are fixedly connected to the first connecting post (42) and the second connecting post (331) respectively.

4. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 2 or 3, characterized in that: It also includes an unlocking drive component, which is installed on the handle body (11). The unlocking drive component includes an output end (51), which is located inside the handle body (11). The output end (51) abuts against the reset end (33). When the output end (51) moves toward the ratchet (2), the output end (51) forces the pawl to rotate against the tension of the tension spring (34), causing the limiting end (31) to disengage from the ratchet (2).

5. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 4, characterized in that: The unlocking drive assembly further includes a mounting post (52) and a locking element (53). The mounting post (52) is slidably mounted on the side wall of the handle body (11). One end of the mounting post (52) is located inside the handle body (11), and the other end is located outside the handle body (11). The output end (51) is fixedly disposed at the end of the mounting post (52) located inside the handle body (11). A compression spring (54) is sleeved on the mounting post (52). The elastic force of the compression spring (54) is greater than the tension of the tension spring (34). One end of the compression spring (54) abuts against the inner wall of the handle body (11), and the other end abuts against the output end (51). The compression spring (54) is used to make the mounting post (52) have a tendency to move towards the ratchet (2). The locking member (53) is disposed between the mounting post (52) and the outer wall of the handle body (11). The locking member (53) is used to restrict the mounting post (52) from moving towards the ratchet (2).

6. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 5, characterized in that: The locking element (53) includes a trigger with a slot (531) along the length of the mounting post (52). The mounting post (52) is located on the outside of the handle body (11) and has a hinge shaft (521). The mounting post (52) is located in the slot (531). The trigger is rotatably connected to the hinge shaft (521). When the trigger and the mounting post (52) are on the same straight line, the end of the trigger with the slot (531) abuts against the handle body (11), and the trigger restricts the mounting post (52) from moving towards the ratchet (2).

7. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 6, characterized in that: The trigger has an arc surface at the end away from the slot (531), and both the upper and lower ends of the end wall of the trigger near the slot (531) are chamfered.

8. The ultrasonic scalpel tip anti-reverse control mechanism according to claim 4, characterized in that: It also includes a reset assembly, which includes a spring (61) and a fixed seat (62). The ratchet (2) is provided with a mounting ring (21) at one end near the torque wrench (13). The spring (61) is wound around the mounting ring (21). The fixed seat (62) is fixedly installed on the inner wall of the handle body (11). The inner end of the spring (61) is connected to the mounting ring (21), and the outer end of the spring (61) is connected to the fixed seat (62).

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