Torque wrench for ultrasonic surgical suction operation
By designing an ultrasonic surgical torque wrench for suction surgery including a rotating shaft, handle shell and top rod, the coupling of the slot and limit end can achieve the switching of the torsional state and the force leakage state, the problems of poor discharge effect of the ultrasonic knife torque wrench in the prior art are solved, and more intuitive and reliable torque control is achieved.
Patent Information
- Application Number
- CN202411979545.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-04-22
AI Technical Summary
The existing ultrasonic knife torque wrench has poor force release after reaching the torque value, and the sound warning of torque is not obvious, which leads to unskilled operators being prone to excessive torque loading.
A torque wrench for ultrasonic surgical suction surgery is designed, including a rotating shaft, handle housing and a pin. Through the coordination of the slot and the limiting end, the switching between the torsional state and the force leakage state is achieved, ensuring that the torque is automatically discharged after the predetermined torque value is reached and excessive twisting is prevented.
After reaching the predetermined torque value, the wrench can easily and reliably relieve torque, avoid excessive torque, and operate more intuitively and reliably.
Smart Images
Figure CN119856960A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of medical instruments, and in particular to a torque wrench for ultrasonic surgical aspiration surgery. Background Art
[0002] Ultrasonic scalpel is a medical device commonly used in surgical operations, used to cut soft and hard tissues of the human body. As a disposable consumable, the ultrasonic scalpel needs to be frequently installed and fastened to the handle. The fastening force of the ultrasonic scalpel has certain requirements, and it can only work normally after being installed with a certain fastening force. At this time, an easy-to-use torque wrench is needed for the installation of the ultrasonic scalpel.
[0003] Traditional torque wrenches will produce a clicking sound due to impact after reaching the torque value. Due to the limitation of the structure, the force is not completely released. For unskilled operators, it is easy to cause the problem of excessive torque loading. In addition, the torque warning through sound is not intuitive enough, which is also easy to cause the problem of excessive torque loading. Summary of the invention
[0004] 1. Technical issues to be resolved
[0005] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a torque wrench for ultrasonic surgical aspiration surgery, which solves the technical problems in the prior art that the traditional ultrasonic knife torque wrench has poor force release effect after reaching the torque value and the sound warning torque is not obvious.
[0006] (II) Technical solution
[0007] In order to achieve the above object, the main technical solutions adopted by the present invention include:
[0008] In the first aspect, the present invention provides a torque wrench for ultrasonic surgical suction surgery, comprising a rotating shaft, a handle shell and a push rod; a connecting cavity is formed on one side of the handle shell, the push rod is axially slidably connected in the handle shell and one end extends into the connecting cavity to form a limit end, and the push rod has a tendency to elastically slide toward the connecting cavity; the rotating shaft is coaxially rotatably connected in the connecting cavity and a slot is provided on the outer wall; the torque wrench can switch between a torsion state and a force release state; in the torsion state, the slot cooperates with the limit end to limit the axial rotation of the rotating shaft; in the force release state, the slot rotates with the rotating shaft so that the slot squeezes the limit end, thereby allowing the limit end to overcome the elastic force and disengage from the slot, and release the restriction on the axial rotation of the rotating shaft.
[0009] (III) Beneficial effects
[0010] The beneficial effect of the present invention is that when the operator rotates the handle shell of the torque wrench for ultrasonic surgical suction surgery, the shaft rotates accordingly in a twisted state. At this time, the slot on the shaft is tightly matched with the limiting end of the push rod until a predetermined torque value is reached.
[0011] Once the torque reaches the preset value, the handle housing can continue to rotate relative to the shaft to switch the torque wrench to the release state. At this time, the slot will squeeze the limit end of the push rod. Since the push rod has a tendency to slide elastically, it will be squeezed by the slot and overcome the elastic force, thereby breaking away from the slot. This action immediately releases the restriction on the axial rotation of the shaft and prevents excessive twisting. At the same time, after the push rod is separated from the slot, the shaft can rotate a larger angle relative to the handle. Compared with the method of warning that the torque reaches the standard through a click in the prior art, the method in this embodiment is undoubtedly more intuitive and reliable, which is conducive to avoiding excessive torque.
[0012] Furthermore, after the ejector rod is disengaged from the slot, the friction between the two is much smaller than the torque of the torque wrench, so the torque can be released more reliably and effectively, avoiding the occurrence of excessive torque.
[0013] The invention realizes a predetermined torque by mechanically bending the pliers head relative to the handle shell, and realizes mechanical control of the torque by adjusting the pressure of the push rod on the rotating shaft, thereby ensuring the reliability of the use of the torque wrench.
[0014] The torque wrench has a simple structure, supports high temperature and high pressure, plasma, and ethylene oxide sterilization, and is easy for doctors to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic structural diagram of a torque wrench for ultrasonic surgical aspiration surgery in a torsion state according to one embodiment of the present invention;
[0016] Figure 2 It is a schematic structural diagram of a torque wrench for ultrasonic surgical aspiration operation in a force-release state according to an embodiment of the present invention;
[0017] Figure 3 This is one of the structural schematic diagrams of a torque wrench for ultrasonic surgical aspiration in another embodiment of the present invention in a torsion state;
[0018] Figure 4 This is a second structural schematic diagram of a torque wrench for ultrasonic surgical aspiration in another embodiment of the present invention in a torsion state;
[0019] Figure 5 It is a schematic structural diagram of a torque wrench for ultrasonic surgical aspiration operation in a force-release state according to another embodiment of the present invention.
[0020] [Description of Reference Numerals]
[0021] 1. Rotating shaft; C. Slot; D. Slide; E. First limiting part; F. Second limiting part;
[0022] 2. Handle housing; A. Connecting cavity; G. Limiting protrusion;
[0023] 3. Ejector rod; B. Limit end;
[0024] 4. Clamp head;
[0025] 5. Elastic component; 51. Spring; 52. Torque adjustment member; 53. Locking member; 54. Conducting block; 55. Pressure sensor;
[0026] 6. Display control module;
[0027] 7. End cap. DETAILED DESCRIPTION
[0028] In order to better explain the present invention, so as to facilitate understanding, the following Figure 1-Figure 5 , the present invention is described in detail through specific implementation methods. Figure 1 The orientation is used as a reference.
[0029] Embodiment 1:
[0030] Reference Figure 1-Figure 5 An embodiment of the present invention provides a torque wrench for ultrasonic surgical suction surgery, including a rotating shaft 1, a handle shell 2 and a push rod 3; a connecting cavity A is formed on one side of the handle shell 2, the push rod 3 is axially slidably connected in the handle shell 2 and one end extends into the connecting cavity A to form a limit end B, and the push rod 3 has a tendency to elastically slide in the direction of the connecting cavity A; the rotating shaft 1 is coaxially rotatably connected in the connecting cavity A and a slot C is opened on the outer wall; the torque wrench can switch between a torsion state and a release state; in the torsion state, the slot C cooperates with the limit end B to limit the axial rotation of the rotating shaft 1; in the release state, the slot C rotates with the rotating shaft 1 so that the slot C squeezes the limit end B, thereby causing the limit end B to overcome the elastic force and disengage from the slot C, and release the restriction on the axial rotation of the rotating shaft 1.
[0031] The torque wrench for ultrasonic surgical suction surgery also includes a forceps head 4, which is fixedly connected to the rotating shaft 1; the forceps head 4 is detachably connected to the rotating shaft 1 by screws, and the forceps head 4 can be set to a variety of sizes and models that are compatible with the knife head to adapt to ultrasonic surgical knives of different sizes.
[0032] The rotating shaft 1 is responsible for transmitting torque to the ultrasonic scalpel, and the handle housing 2 provides the operator with a comfortable gripping area and protects the internal mechanical structure. The push rod 3 is used to automatically release when the predetermined torque is reached to prevent damage that may be caused by excessive twisting. The connecting cavity A is used to install and fix the rotating shaft 1, and serves as the area where the push rod 3 interacts with the rotating shaft 1. The push rod 3 can slide along its axial direction in the handle housing 2. This design allows the push rod 3 to move when subjected to external force. The push rod 3 has a tendency to slide in the direction of the connecting cavity A, such as by a spring 51 or other elastic element, to ensure that when the predetermined torque is not reached, the push rod 3 can fit tightly with the slot C of the rotating shaft 1.
[0033] When the operator rotates the handle housing 2, the shaft 1 rotates accordingly in a twisted state. At this time, the slot C on the shaft 1 is tightly matched with the limit end B of the push rod 3 until a predetermined torque value is reached.
[0034] Once the torque reaches the preset value, the handle housing 2 can continue to rotate relative to the shaft 1 to switch the torque wrench to the release state. At this time, the slot C will squeeze the limit end B of the push rod 3. Since the push rod 3 has a tendency to slide elastically, it will be squeezed by the slot C and overcome the elastic force, thereby breaking away from the match with the slot C. This action immediately releases the restriction on the axial rotation of the shaft 1 and prevents excessive torsion. At the same time, after the push rod 3 is separated from the slot C, the shaft 1 can rotate a larger angle relative to the handle. Compared with the method of warning that the torque reaches the standard through a click in the prior art, the method in this embodiment is undoubtedly more intuitive and reliable, which is conducive to avoiding the occurrence of excessive torque.
[0035] Furthermore, after the push rod 3 is disengaged from the clamping slot C, the friction force between the two is much smaller than the torque of the torque wrench, so the torque can be released more reliably and effectively, avoiding the occurrence of excessive torque.
[0036] The limit end B is an arc surface, and the slot C forms transition surfaces on both sides along the circumference of the rotating shaft 1. The arc surface can cooperate with the transition surface when the torque wrench switches states, thereby enabling it to complete the state switching relatively smoothly and improving the operational stability of the torque wrench.
[0037] Since the tightening torque of the ultrasonic surgical knife head is generally not large, the structure of the wrench in this patent is sufficient to meet the use requirements of tightening and loosening the ultrasonic surgical knife head.
[0038] Specifically, the torque wrench has a simple structure, supports high temperature and high pressure, plasma, and ethylene oxide sterilization, and is easy for doctors to use.
[0039] Embodiment 2:
[0040] Reference Figure 1-Figure 5In addition to all the technical solutions of the above embodiments, the embodiments of the present invention further have the following technical solutions:
[0041] A slide groove D is also circumferentially provided on the outer wall of the rotating shaft 1, and the slide groove D forms a first limit portion E and a second limit portion F at both ends along the circumference of the rotating shaft 1 respectively; a limit protrusion G is extended from the inner wall of the connecting cavity A into the connecting cavity A, and the limit protrusion G maintains a sliding fit with the slide groove D; the torque wrench can also switch between a first position and a second position, in the first position, the limit protrusion G abuts against the first limit portion E, and the limit end B cooperates with the slot C; in the second position, the limit protrusion G abuts against the second limit portion F, and the limit end B is out of fit with the slot C.
[0042] In this embodiment, in addition to the original slot C, a circumferential slide groove D is provided on the outer wall of the rotating shaft 1. The slide groove D is designed to cooperate with the limiting protrusion G in the connecting cavity A to provide additional position control and stability. The two ends of the slide groove D along the circumference of the rotating shaft 1 respectively form a first limiting portion E and a second limiting portion F. The two limiting portions are used to limit the position of the rotating shaft 1 during the rotation process to ensure that the torque wrench can be accurately switched to the first position and the second position.
[0043] The limiting protrusion G is slidably matched with the slide groove D on the rotating shaft 1. The limiting protrusion G is designed to cooperate with the first limiting portion E and the second limiting portion F in the slide groove D, so as to control the position of the rotating shaft 1 relative to the connecting cavity A. In this way, when the torque wrench is in a force-release state, its rotation angle can be limited to a certain range, thereby preventing the torque wrench from swinging excessively.
[0044] According to traditional thread usage, turning the torque wrench clockwise tightens the thread, and turning the torque wrench counterclockwise loosens the thread. Before the torque wrench is used, the torque wrench is in a torsion state because the limiting protrusion G abuts against the first limiting portion E, limiting the rotation of the handle housing 2 in the counterclockwise direction.
[0045] When installing the ultrasonic scalpel, turn the handle shell 2 clockwise. As the ultrasonic scalpel is gradually tightened, when the torque reaches the threshold, the limit end B disengages from the slot C, and the rotation of the pliers head 4 is no longer resisted, that is, the torque is removed, until the second limit part F rotates to abut the limit protrusion G, and the handle shell 2 can no longer rotate clockwise.
[0046] Therefore, the torque wrench can not only avoid excessive torque after the torque reaches the threshold, but also can be used as an ordinary wrench as the handle shell 2 continues to rotate counterclockwise or clockwise with the cooperation of the first limit part E, the second limit part F and the limit protrusion G, thereby enriching the function of the wrench and improving the flexibility of use of the wrench.
[0047] Embodiment 3:
[0048] Reference Figure 1-Figure 5 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:
[0049] The angle between the first limit portion E and the second limit portion F and the line connecting the axis of the rotating shaft 1 is 30°-90°. By limiting the angle, it can be ensured that the torque wrench has a sufficient rotation angle to remind the operator that the torque meets the standard after switching to the release state; by limiting the angle to 30°-90°, it can be further ensured that the torque wrench has a sufficient rotation angle to remind the operator that the torque meets the standard after switching to the release state.
[0050] Embodiment 4:
[0051] Reference Figure 1-Figure 5 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:
[0052] The torque wrench for ultrasonic surgical suction operation also includes an elastic component 5, which includes a spring 51 and a torque adjusting member 52 both of which are arranged in the handle housing 2. The axial ends of the spring 51 abut against the push rod 3 and the torque adjusting member 52 respectively, and the torque adjusting member 52 is threadedly connected to the inner wall of the handle housing 2. By adjusting the depth of screwing into the handle housing 2, the elastic force applied by the spring 51 to the push rod 3 can be adjusted, and then the elastic force applied to the rotating shaft 1 can be controlled, thereby changing the torque threshold of the torque wrench.
[0053] The elastic component 5 also includes a locking piece 53 threadedly connected to the inner wall of the handle housing 2. The locking piece 53 is coaxial with the torque adjusting piece 52 and can press the end of the torque adjusting piece 52 away from the spring 51. The locking piece 53 cooperates with the torque adjusting piece 52 to ensure that during the use of the torque wrench, without actively rotating the locking piece 53 and the torque adjusting piece 52, the end of the spring 51 close to the torque adjusting piece 52 is prevented from passively sliding due to factors such as vibration, thereby reliably ensuring the torque value and / or torque change curve of the torque wrench and improving the intuitiveness of the torque of the high torque wrench.
[0054] Specifically, the ends of the torque adjusting member 52 and the locking member 53 away from the spring 51 may be provided with rotation grooves that can cooperate with a screwdriver, so as to achieve convenient and fast rotation adjustment of the two.
[0055] Embodiment 5:
[0056] Reference Figure 3-Figure 5 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:
[0057] The elastic component 5 further includes a conduction block 54, which is axially slidably connected in the handle housing 2 and is located between the spring 51 and the torque adjustment member 52 to transmit the axial force;
[0058] The elastic component 5 further includes a pressure sensor 55 , which can be fixed to one end of the torque adjusting member 52 close to the conductive block 54 .
[0059] The torque wrench for ultrasonic surgical aspiration surgery further comprises a display control module 6 , which is electrically connected to the pressure sensor 55 to output the torque value and / or torque variation curve of the torque wrench corresponding to the elastic force of the spring 51 .
[0060] In this embodiment, the pressure sensor 55 can cooperate with the display control module 6 to obtain the pressure value of the conduction block 54 on the pressure sensor 55, and then equate the torque value and / or torque change curve of the torque wrench and output it through the LCD screen of the display control module 6, thereby improving the visibility of the torque of the torque wrench and thus improving the convenience of using the torque wrench.
[0061] The conduction block 54 is slidably connected to the handle housing 2 , and can reliably transmit the pressing force while ensuring the stability of the pressure obtained by the pressure sensor 55 .
[0062] The display control module 6 includes a processor, a power supply and a liquid crystal display. The power supply is used to supply power to the pressure sensor 55, the processor and the liquid crystal display. The processor is used to output the torque value and / or torque change curve of the torque wrench, and the liquid crystal display is used to output the torque value intuitively.
[0063] Embodiment 6:
[0064] Reference Figure 1-Figure 5 In addition to all the technical solutions of any of the above embodiments, the embodiments of the present invention further have the following technical solutions:
[0065] The torque wrench for ultrasonic surgical suction operation further comprises an end cover 7, which is detachably connected to an end of the handle housing 2 away from the rotating shaft 1 to close the inner cavity of the handle housing 2 at the end.
[0066] In this embodiment, the end cap 7 is used to close the inner cavity of the handle housing 2, thereby protecting the internal mechanical structure and components from dust, moisture and other external contaminants. The connection between the end cap 7 and the handle housing 2 is detachable, and the user can easily remove the end cap 7 when necessary to clean, maintain, adjust and replace components inside the handle housing 2. This design improves the maintainability and service life of the torque wrench.
[0067] When the end cap 7 is mounted on the handle housing 2, it tightly closes the inner cavity of the handle housing 2. This sealing ensures that the internal mechanical structure and components can work in a clean and dry environment, thereby reducing the risk of malfunction and damage.
[0068] It can be understood that, except for any conflicting parts, the above-mentioned embodiments 1-6 can be freely combined to form other implementation modes of the present invention.
[0069] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
[0070] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0071] In the present invention, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.
[0072] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.
[0073] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.
Claims
1. A torque wrench for ultrasonic surgical suction operation, characterized in that: It comprises a rotating shaft (1), a handle housing (2) and a push rod (3); A connecting cavity (A) is formed on one side of the handle housing (2), the push rod (3) is axially slidably connected in the handle housing (2) and one end of the push rod (3) extends into the connecting cavity (A) to form a limit end (B), and the push rod (3) has a tendency to elastically slide in the direction of the connecting cavity (A); The rotating shaft (1) is coaxially rotatably connected in the connecting cavity (A) and has an outer wall provided with a slot (C); The torque wrench can be switched between a torsion state and a release state; in the torsion state, the slot (C) cooperates with the limit end (B) to limit the axial rotation of the rotating shaft (1); in the release state, the slot (C) rotates with the rotating shaft (1) so that the slot (C) squeezes the limit end (B), thereby causing the limit end (B) to overcome elastic force and disengage from the slot (C), thereby releasing the restriction on the axial rotation of the rotating shaft (1).
2. The torque wrench for ultrasonic surgical aspiration according to claim 1, characterized in that: The limiting end (B) is an arc surface, and the clamping groove (C) forms transition surfaces on both sides along the circumference of the rotating shaft (1).
3. The torque wrench for ultrasonic surgical aspiration as claimed in claim 1, characterized in that: The outer wall of the rotating shaft (1) is also provided with a slide groove (D) in the circumferential direction, and the slide groove (D) forms a first limiting portion (E) and a second limiting portion (F) at two ends along the circumference of the rotating shaft (1); The inner wall of the connecting cavity (A) extends a limiting protrusion (G) into the connecting cavity (A), and the limiting protrusion (G) maintains a sliding fit with the sliding groove (D); The torque wrench can also switch between a first position and a second position. In the first position, the limiting protrusion (G) abuts against the first limiting portion (E), and the limiting end (B) cooperates with the slot (C); in the second position, the limiting protrusion (G) abuts against the second limiting portion (F), and the limiting end (B) disengages from the slot (C).
4. The torque wrench for ultrasonic surgical aspiration as claimed in claim 3, characterized in that: The angle between the first limiting portion (E) and the second limiting portion (F) and the line connecting the axis of the rotating shaft (1) is 30°-90°.
5. The torque wrench for ultrasonic surgical aspiration according to claim 1, characterized in that: It also comprises a clamp head (4), wherein the clamp head (4) is fixedly connected to the rotating shaft (1); The pliers head (4) is detachably connected to the rotating shaft (1) via screws; The pliers head (4) can be configured to have a variety of sizes and models that are compatible with the cutter head, or the pliers head is a movable pliers; The pliers head (4) is provided with a direction indicating arrow to indicate the tightening and loosening directions.
6. The torque wrench for ultrasonic surgical aspiration as claimed in claim 1, characterized in that: The invention also comprises an elastic component (5), wherein the elastic component (5) comprises a spring (51) and a torque adjusting member (52) both of which are arranged in the handle housing (2), wherein the axial ends of the spring (51) respectively abut against the push rod (3) and the torque adjusting member (52), and the torque adjusting member (52) is threadedly connected to the inner wall of the handle housing (2).
7. The torque wrench for ultrasonic surgical aspiration according to claim 6, characterized in that: The elastic component (5) further comprises a locking member (53) threadedly connected to the inner wall of the handle housing (2); the locking member (53) is coaxial with the torque adjusting member (52) and is capable of pressing the end of the torque adjusting member (52) away from the spring (51).
8. The torque wrench for ultrasonic surgical aspiration according to claim 7, characterized in that: The elastic component (5) further comprises a conduction block (54), the conduction block (54) being axially slidably connected in the handle housing (2) and being located between the spring (51) and the torque adjusting member (52) to transmit axial force; The elastic component (5) further comprises a pressure sensor (55), and the pressure sensor (55) can be fixed to one end of the torque adjustment member (52) close to the conduction block (54).
9. The torque wrench for ultrasonic surgical aspiration according to claim 8, characterized in that: It also includes a display control module (6), which is electrically connected to the pressure sensor (55) to output the torque value and / or torque change curve of the torque wrench corresponding to the elastic force of the spring (51).
10. The torque wrench for ultrasonic surgical aspiration according to any one of claims 1 to 9, characterized in that: It also comprises an end cover (7), which is detachably connected to an end of the handle housing (2) away from the rotating shaft (1) so as to close the inner cavity of the handle housing (2) at this end.