Sheath adapter and surgical assistance system

Abstract

A sheath adapter (20) and a surgical assistance system. The sheath adapter (20) comprises a support frame (100), a telescopic rod assembly (200), and a cap (300). The telescopic rod assembly (200) comprises a rotating shaft (210) and a movable shaft (220). A first end of the rotating shaft (210) is rotatably connected to the support frame (100), and a second end of the rotating shaft (210) is slidably connected to a first end of the movable shaft (220). The cap (300) comprises an accommodating recess (310). The accommodating recess (310) is configured for accommodating a knob (12), and the cap (300) is connected to a second end of the movable shaft (220). The rotating shaft (210) can rotate to drive the cap (300) to rotate by means of the movable shaft (220), and the movable shaft (220) can slide in an axial direction to adjust the position of the cap (300) relative to the support frame (100). The arrangement of the telescopic rod assembly (200) can allow the clearance, so that a surgical tool (10) can be conveniently placed on the support frame (100). Moreover, the knob (12) of the surgical tool (10) is connected by means of the cap (300), thereby facilitating assembly.

Description

Sheath adapter and surgical auxiliary system

[0001] This patent application claims priority to application number CN202311696447.2, entitled “A Sheath Adapter and Surgical Assisting System,” filed on December 11, 2023. The disclosure of the prior application is considered a part of this patent application and is incorporated by reference into this patent application. Technical Field

[0002] The present invention relates to the technical field of medical devices, and in particular to a sheath adapter and a surgical auxiliary system. Background Art

[0003] Minimally invasive surgery refers to surgery performed using modern medical instruments such as laparoscopes and thoracoscopes, as well as related equipment. Minimum trauma, minimal pain, and rapid recovery are the dreams of every patient requiring surgery, and minimally invasive surgery makes this dream a reality. Minimally invasive surgery typically requires the intervention of passive minimally invasive surgical instruments. Passive minimally invasive surgical instruments can be understood as medical devices that function directly from energy generated by the human body or gravity, rather than relying on any electricity or other energy sources. This means they require manual operation by the doctor. Complex procedures or the use of complex minimally invasive surgical instruments require a high level of technical expertise and clinical experience, making the operation difficult and time-consuming. To ensure a successful procedure, dedicated power devices are used to control the minimally invasive surgical instruments.

[0004] At present, minimally invasive surgical tools are generally operated by knobs, and the distal movement of the surgical tool is controlled by turning the knob to complete the operation. In the prior art, minimally invasive surgical tools are usually connected to the power device through a sheath adapter. In order to ensure transmission accuracy, the existing sheath adapter is usually connected to the minimally invasive surgical tool by worm gear meshing, that is, the knob is designed to be worm-shaped. However, even the knob angles of minimally invasive surgical tools of the same type and specification may be different. Each assembly requires repeated adjustment of the angle and orientation of the worm of the sheath adapter to ensure that the worm gear teeth on the knob are accurately meshed with the worm of the sheath adapter to ensure transmission accuracy. Specifically, each time the worm angle is adjusted, it is necessary to try to assemble the knob and worm, and observe whether the two are accurately meshed. If the meshing requirements are not met, the worm angle needs to be readjusted until the meshing requirements are met, and the assembly convenience is poor. Summary of the Invention

[0005] One object of the present invention is to provide a sheath adapter that is convenient to assemble with surgical tools.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A sheath adapter is provided, comprising:

[0008] Support frame;

[0009] The telescopic rod assembly includes a rotating shaft and a movable shaft, wherein the first end of the rotating shaft is rotatably connected to the support frame, and the second end of the rotating shaft is slidably connected to the first end of the movable shaft;

[0010] The cap includes a receiving groove, and the cap is connected to the second end of the movable shaft. The rotating shaft can rotate to drive the cap to rotate through the movable shaft, and the movable shaft can slide axially to adjust the position of the cap relative to the support frame.

[0011] Optionally, one of the rotating shaft and the movable shaft is provided with a sliding channel, and the other is slidably inserted into the sliding channel.

[0012] Optionally, a limiting groove is provided on the groove wall of the accommodating groove.

[0013] Optionally, a deceleration assembly is further included, wherein the first end of the deceleration assembly is connected to the movable shaft, the second end of the deceleration assembly is connected to the cover cap, and the rotating shaft can rotate to drive the cover cap to rotate through the movable shaft and the deceleration assembly.

[0014] Optionally, it also includes:

[0015] a telescopic sleeve assembly, wherein the telescopic rod assembly is arranged inside the telescopic sleeve assembly, the telescopic sleeve assembly comprising a fixed sleeve fixedly connected to the support frame and a movable sleeve connected to the fixed sleeve, the movable sleeve being capable of rotating and sliding relative to the fixed sleeve, and the movable sleeve being rotatably connected to the movable shaft;

[0016] A cantilever, wherein the first end of the cantilever is fixedly connected to the movable sleeve, the second end of the cantilever is provided with the cover cap, and the deceleration assembly is provided in the cantilever.

[0017] Optionally, a fastener is further included, the fastener is passed through the fixed sleeve and abuts against the movable sleeve, and the fastener is threadedly connected to the fixed sleeve.

[0018] Optionally, at least one slide groove extending along the axial direction of the fixed sleeve is provided in the fixed sleeve, a circumferential groove connected to the slide groove is provided in the end of the fixed sleeve facing the movable sleeve, and a slider portion corresponding to the slide groove one by one is provided at the end of the movable sleeve facing the fixed sleeve, and the slider portion is slidably provided in the slide groove or the circumferential groove.

[0019] Optionally, a sterile partition is further included, which is detachably arranged on the support frame, and the sterile partition is fitted to the support frame.

[0020] Optionally, a transmission shaft is rotatably provided on the sterile partition, a first end of the transmission shaft is detachably connected to the rotating shaft, and the rotation of the transmission shaft can drive the rotating shaft to rotate.

[0021] Another object of the present invention is to provide a surgical assistance system, comprising: the sheath adapter described in any one of the above items;

[0022] A power device, on which the sheath adapter is detachably mounted, comprises an output shaft, and the rotation of the output shaft can drive the rotation shaft. Beneficial effects:

[0023] The sheath adapter provided by the present invention, during the assembly process of the sheath adapter and the surgical tool, the surgical tool is placed on the support frame, the movable shaft is slid, and the cap is moved toward the knob of the surgical tool until the knob of the surgical tool is placed in the receiving groove or abuts against the cap. If the knob abuts against the cap, the rotating shaft is rotated to drive the cap to rotate through the movable shaft until the angle of the cap is suitable for accommodating the knob, and the movable shaft is slid again to place the knob in the receiving groove, thereby facilitating assembly. In addition, the arrangement of the telescopic rod assembly, that is, the sliding connection between the rotating shaft and the movable shaft, can form a gap to facilitate the placement of the surgical tool on the support frame, avoiding positional interference between the surgical tool and the sheath adapter that affects assembly.

[0024] The surgical auxiliary system provided by the present invention effectively ensures the convenience of assembly between the sheath adapter and the surgical tools. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is an exploded schematic diagram of a surgical assistance system provided by the present invention;

[0026] FIG2 is a schematic structural diagram of a surgical tool provided by the present invention installed on a sheath adapter; FIG3 is a schematic structural diagram of a sheath adapter provided by the present invention from one perspective;

[0027] FIG4 is a schematic structural diagram of the sheath adapter provided by the present invention from another perspective; FIG5 is a partial structural sectional view of the sheath adapter provided by the present invention;

[0028] FIG6 is a schematic diagram of the internal structure of the sheath adapter provided by the present invention from one perspective;

[0029] FIG7 is a schematic diagram of the internal structure of the sheath adapter provided by the present invention from another perspective; FIG8 is a schematic diagram of the structure of the first fixing sleeve provided by the present invention;

[0030] FIG9 is a schematic structural diagram of the first movable sleeve provided by the present invention.

[0031] In the figure: 10, surgical tool; 11, handle; 12, knob; 12a, first knob; 12b, second knob; 20, sheath adapter; 31, output shaft; 31a, first output shaft; 31b, second output shaft; 32, mounting platform; 32a, first platform; 32b, second platform; 32c, side plate; 33, pin hole; 100, support frame; 101, input end; 101a, first input end; 101b, second input end; 1011, first protrusion; 102, fixing portion; 1021, fixing hole; 110, first frame; 120, second frame; 200, telescopic rod assembly; 210, rotating shaft; 211, sliding channel; 220, movable shaft; 300, cover cap; 310, receiving groove; 311, fixing groove; 320, limiting groove; 321, limiting surface; 400, reduction assembly; 410, first bevel gear; 420, second bevel gear; 430, worm; 440, worm wheel; 500, telescopic sleeve assembly; 510, fixed sleeve; 511, slide groove; 512, circumferential groove; 520, movable sleeve; 521, slider; 600, cantilever; 700, sterile partition; 710, drive shaft; 710a, first drive shaft; 710b, second drive shaft; 720, positioning pin; 810, third bevel gear; 820, fourth bevel gear. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0033] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0035] In the description of this embodiment, the terms "upper," "lower," "right," and other orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meanings.

[0036] 1 to 4 , this embodiment provides a surgical assistance system for driving a surgical tool 10 for surgical operation. The surgical assistance system includes a sheath adapter 20 and a power unit. The sheath adapter 20 is detachably mounted on the power unit. The power unit is in transmission connection with the sheath adapter 20, and the surgical tool 10 can be driven and connected to the power unit via the sheath adapter 20.

[0037] Specifically, the surgical tool 10 includes a handle 11 and a knob 12 disposed on the handle 11 .

[0038] Specifically, the sheath adapter 20 includes a support frame 100, a telescopic rod assembly 200 and a cap 300. The telescopic rod assembly 200 includes a rotating shaft 210 and a movable shaft 220. The first end of the rotating shaft 210 is rotatably connected to the support frame 100, and the second end of the rotating shaft 210 is slidably connected to the first end of the movable shaft 220; the cap 300 includes a receiving groove 310, which is used to accommodate the knob 12, and the cap 300 is connected to the second end of the movable shaft 220. The rotating shaft 210 can rotate to drive the cap 300 to rotate through the movable shaft 220, and the movable shaft 220 can slide axially to adjust the position of the cap 300 relative to the support frame 100.

[0039] Specifically, the power device includes an output shaft 31 , and the rotation of the output shaft 31 can drive the rotating shaft 210 to rotate.

[0040] In this embodiment, the provision of the sheath adapter 20 effectively ensures convenient assembly between the sheath adapter 20 and the surgical tool 10. Specifically, during assembly of the sheath adapter 20 and the surgical tool 10, the surgical tool 10 is placed on the support frame 100, the movable shaft 220 is slid, and the cap 300 is moved toward the knob 12 of the surgical tool 10 until the knob 12 of the surgical tool 10 is placed in the receiving groove 310 or abuts the cap 300. If the knob 12 abuts the cap 300, the rotating shaft 210 is rotated to drive the cap to rotate via the movable shaft 220 until the angle of the cap is suitable for accommodating the knob 12. The movable shaft 220 is then slid again to place the knob 12 in the receiving groove 310, facilitating assembly. In addition, the knob 12 is driven to rotate by the cap 300, which is stable, reliable and has high precision. The setting of the telescopic rod assembly 200, that is, the sliding connection between the rotating shaft 210 and the movable shaft 220, can form a gap to facilitate the placement of the surgical tool 10 on the support frame 100, avoiding position interference between the surgical tool 10 and the sheath adapter 20 and affecting the assembly.

[0041] In a feasible embodiment, as shown in FIG4 , one of the periphery of the knob 12 and the groove wall of the receiving groove 310 of the cap 300 is provided with a fixing groove 311 (not shown) at intervals, and the other is provided with a fixing protrusion (not shown) at intervals. The fixing protrusion is provided in the fixing groove 311 to achieve transmission cooperation between the knob 12 and the cap 300. Exemplarily, at least one fixing groove 311 and at least one fixing protrusion are provided respectively, and the fixing protrusions can be provided in the fixing groove 311 in a one-to-one correspondence. The number of fixing grooves 311 is greater than or equal to the number of fixing protrusions to facilitate assembly. Of course, the periphery of the knob 12 and the groove wall of the receiving groove 310 can also have other shapes, such as wavy, polygonal, tooth-shaped, etc.

[0042] In one feasible embodiment, as shown in FIG4 , a limiting rod (not shown) is provided on the knob 12, and a limiting groove 320 is provided on the wall of the receiving groove 310. The limiting groove 320 is used to accommodate the limiting rod. For example, the limiting groove 320 includes two limiting surfaces 321 that are parallel to each other and perpendicular to the centerline of the cap 300. Both limiting surfaces 321 abut against the periphery of the limiting rod, effectively ensuring the transmission accuracy between the cap 300 and the knob 12. For example, at least one limiting rod and at least one limiting groove 320 are provided, and the limiting grooves 320 can accommodate the limiting rods in a one-to-one correspondence.

[0043] For example, the limiting rod can be located around the knob 12, with a first end of the limiting rod being threadedly connected to the knob 12, and a second end of the limiting rod being provided with a head for squeezing the cap 300 to form a fixed connection between the cap 300 and the knob 12, thereby effectively ensuring the transmission accuracy between the cap 300 and the knob 12. For example, the limiting rod can be a screw.

[0044] In a feasible embodiment, as shown in FIG5 , one of the rotating shaft 210 and the movable shaft 220 is provided with a sliding channel 211, and the other is slidably inserted into the sliding channel 211. Specifically, taking the rotating shaft 210 provided with the sliding channel 211 as an example, the inner surface of the sliding channel 211 is in contact with the circumference of the movable shaft 220, effectively ensuring the coaxiality of the rotating shaft 210 and the movable shaft 220, and ensuring the sliding stability of the movable shaft 220 relative to the rotating shaft 210. For example, a long groove (not shown) extending along the axial direction of the rotating shaft 210 is provided in the sliding channel 211, and a long protrusion (not shown) extending along the axial direction of the movable shaft 220 is provided on the circumference of the movable shaft 220. The long protrusion is placed in the long groove to form a limit, so that the movable shaft 220 can rotate with the rotating shaft 210. Of course, the shape of the sliding channel 211 can also be spline-shaped, square, oval or other shapes, which are not limited in this application.

[0045] In this embodiment, as shown in FIG6 , the sheath adapter 20 further includes a reduction assembly 400. A first end of the reduction assembly 400 is connected to the movable shaft 220, and a second end of the reduction assembly 400 is connected to the cap 300. The rotating shaft 210 is rotatable, thereby driving the cap 300 to rotate via the movable shaft 220 and the reduction assembly 400. In this embodiment, the provision of the reduction assembly 400 increases the transmission ratio, thereby ensuring transmission accuracy between the telescopic rod assembly 200 and the knob 12, and allows the use of a smaller drive motor for the power unit. For example, first, pull out the movable shaft 220 in the direction away from the support frame 100, so that the reduction wheel group and the cap 300 are away from the support frame 100, forming a gap; then, rotate the rotating shaft 210 to make the cap 300 correspond to the knob 12; finally, rotate the cap 300 to make the limit rod and the limit groove 320 correspond, and push back the movable shaft 220 to make the cap 300 sleeve on the knob 12, completing the assembly of the sheath adapter 20 and the knob 12, which is simple and convenient.

[0046] Specifically, the reduction assembly 400 includes a first bevel gear 410, a second bevel gear 420, a worm 430, and a worm wheel 440. The first bevel gear 410 is disposed on the second end of the movable shaft 220 and meshes with the second bevel gear 420. The second bevel gear 420 is disposed at the first end of the worm 430. The worm 430 meshes with the worm wheel 440, and the worm wheel 440 is connected to the first cover 300. For example, the rotation of the movable shaft 220 can drive the worm 430 to rotate through the meshing between the first bevel gear 410 and the second bevel gear 420. The worm 430, through the meshing transmission between the worm 430 and the worm wheel 440, drives the cover 300 to rotate. In this embodiment, the meshing transmission between the first bevel gear 410 and the second bevel gear 420 and the meshing transmission between the worm 430 and the worm wheel 440 changes the orientation of the cover 300, making the cover 300 suitable for assembly with the knob 12. In addition, the worm 430 and the worm wheel 440 have a self-locking function, which effectively ensures that the transmission between the sheath adapter 20 and the knob 12 is stable and reliable.

[0047] In this embodiment, as shown in Figure 7, the sheath adapter 20 also includes a telescopic sleeve assembly 500 and a cantilever 600. The telescopic rod assembly 200 is arranged in the telescopic sleeve assembly 500. The telescopic sleeve assembly 500 includes a fixed sleeve 510 fixedly connected to the support frame 100 and a movable sleeve 520 connected to the fixed sleeve 510. The movable sleeve 520 can rotate and slide relative to the fixed sleeve 510, and the movable sleeve 520 is rotatably connected to the movable shaft 220; the first end of the cantilever 600 is fixedly connected to the movable sleeve 520, the second end of the cantilever 600 is provided with a cap 300, and a deceleration assembly 400 is provided in the cantilever 600. Among them, sliding the movable sleeve 520 relative to the fixed sleeve 510 can drive the movable shaft 220 to slide, thereby realizing the extension and retraction of the movable shaft 220 relative to the rotating shaft 210; rotating the movable sleeve 520 can rotate the cantilever 600, so that the cantilever 600 can be avoided, making it convenient to place the handle 11 on the support frame 100; due to the setting of the telescopic sleeve assembly 500 and the cantilever 600, the cap 300 can be directly rotated so that the angle of the cap is suitable for accommodating the knob 12, thereby facilitating the assembly of the sheath adapter 20 and the knob 12.

[0048] In this embodiment, the cantilever 600 provides support for the reduction assembly 400 to ensure stable and reliable transmission of the reduction assembly 400. Specifically, the worm 430 and the worm wheel 440 are both rotatably connected to the cantilever 600.

[0049] In this embodiment, referring to Figures 5, 8 and 9, at least one slide groove 511 extending along the axial direction of the fixed sleeve 510 is provided in the fixed sleeve 510, for example, two, a circumferential groove 512 connected to the slide groove 511 is provided in one end of the fixed sleeve 510 facing the movable sleeve 520, and a slider portion 521 corresponding to the slide groove 511 is provided at one end of the movable sleeve 520 facing the fixed sleeve 510, and the slider portion 521 is slidably provided in the slide groove 511 or the circumferential groove 512. For example, first, pull out the movable sleeve 520 in the direction away from the support frame 100, so that the slider portion 521 slides from the slide groove 511 to the circumferential groove 512, rotate the movable sleeve 520 to form an avoidance, and place the handle 11 on the support frame 100; then, reverse the movable sleeve 520, align the slider portion 521 with the slide groove 511, and rotate the cap 300 to make the limit rod and the limit groove 320 correspond to each other; finally, push the movable sleeve 520 back again, so that the cap 300 is placed on the knob 12, and the assembly of the sheath adapter 20 and the knob 12 is completed, which is simple and convenient. Among them, when the handle 11 is placed on the support frame 100 and the slider portion 521 is aligned with the slide groove 511, the movable sleeve 520 can be pushed back a little to make the slider portion 521 slide into the slide groove 511 first, and then the cap 300 is rotated to make the limit rod and the limit groove 320 correspond to each other. Pushing the movable sleeve 520 back a little can be understood as only making the slider portion 521 slide into the slide groove 511 first, and maintaining an appropriate distance between the cap 300 and the knob 12. At this time, when the cap 300 is turned, the cantilever 600 will not rotate, which can simplify the assembly process.

[0050] In one possible embodiment, the sheath adapter 20 further includes a fastener (not shown), which is disposed through the fixed sleeve 510 and abuts against the movable sleeve 520, and is threadedly connected to the fixed sleeve 510. When the cap 300 and the knob 12 are assembled, the fastener is tightened to compress the movable sleeve 520, thereby securing the movable sleeve 520 relative to the fixed sleeve 510 and preventing the cap 300 from separating from the knob 12.

[0051] In one feasible embodiment, the worm 430 can be a telescopic rod to adjust the distance between the cap 300 and the telescopic rod assembly 200 to improve the adaptability of the sheath adapter 20. Its structure can be the same as that of the telescopic rod assembly 200, and this application will not further describe it. Furthermore, the cantilever 600 can be configured to have the same structure as the telescopic sleeve assembly 500, and this application will not further describe it.

[0052] In this embodiment, as shown in Figures 1 and 4, the top of the support frame 100 is used to place the handle 11, and the bottom of the support frame 100 is provided with an input end 101 that can be connected to the output shaft 31. The output shaft 31 can be driven by the input end 101, so that the output shaft 31 drives the rotating shaft 210 to rotate. The power device also includes a mounting platform 32, on which the output shaft 31 is disposed. In this embodiment, the input end 101 is disposed at the bottom of the support frame 100. When the sheath adapter 20 equipped with the surgical tool 10 is placed on the mounting platform 32, that is, the surgical tool 10 and the sheath adapter 20 are stacked on the mounting platform 32, the input end 101 of the sheath adapter 20 can be docked with the output shaft 31 of the power device only by the weight of the sheath adapter 20 and the surgical tool 10 and the cooperation of the positioning pin 720 and the pin hole 33 at the bottom of the support frame 100, which is stable and reliable.

[0053] Specifically, the output shaft 31 of the power device is provided with a plurality of first grooves (not shown), and the input end 101 of the sheath adapter 20 is provided with a plurality of first protrusions 1011. The first protrusions 1011 are used to be plugged into the first grooves one by one to transmit torque, thereby facilitating the transmission connection between the sheath adapter 20 and the power device, and the first protrusions 1011 are provided on the input end 101 to facilitate sterilization.

[0054] For example, the input end 101 may be made of a magnetic material to ensure a stable connection. For example, two first grooves and two first protrusions 1011 are provided.

[0055] In a feasible embodiment, as shown in Figure 3, the bottom of the support frame 100 extends to form a fixing portion 102, and at least one fixing hole 1021 is opened on the fixing portion 102. The fixing hole 1021 is penetrated by a fastening screw (not shown) and is threadedly connected to the mounting platform 32 to fix the sheath adapter 20 on the mounting platform 32.

[0056] In a feasible embodiment, the support frame 100 is made of a magnetic material, and the support frame 100 and the mounting platform 32 can be fixed by magnetic connection. In this embodiment, no fastening screws are required, and the installation operation is more convenient.

[0057] In this embodiment, as shown in FIG1 , the sheath adapter 20 further includes a sterile partition 700, which is detachably mounted on the support frame 100, and the sterile partition 700 is fitted with the support frame 100. In this embodiment, the first side of the sterile partition 700 is fitted with the support frame 100, and the second side of the sterile partition 700 is used to fit with the mounting platform 32, which can effectively avoid direct contact between the support frame 100 and the mounting platform 32, further reducing the contact area between the sheath adapter 20 and the power device, and reducing the probability of pathogen transmission. In this embodiment, the sterile partition 700 can be a disposable accessory, or it can be reused after sterilization, which is not specifically limited in this application.

[0058] In a feasible embodiment, at least a portion of the sterile partition 700 is configured as a magnetic attraction area, which can be magnetically attracted to the support frame 100 and the mounting platform 32 to stabilize the fixation of the sheath adapter 20 relative to the mounting platform 32.

[0059] In a feasible embodiment, a plurality of positioning pins 720 are provided on the sterile partition 700, for example, two, and the two ends of the positioning pins 720 are respectively protruding from the first side and the second side of the sterile partition 700, and the support frame 100 and the mounting platform 32 are both provided with pin holes 33 corresponding to the positioning pins 720. The positioning pins 720 are inserted into the corresponding pin holes 33, so that the sheath adapter 20 can quickly and accurately find the relative position to be placed on the mounting platform 32.

[0060] In one feasible embodiment, the sterile barrier 700 can be replaced with a sterile membrane to prevent direct contact between the support frame 100 and the mounting platform 32, thereby reducing the probability of pathogen transmission. For example, when a sterile membrane is provided between the support frame 100 and the mounting platform 32, the positioning pins 720 can be provided on the mounting platform 32.

[0061] In this embodiment, as shown in Figure 1 , a transmission shaft 710 is rotatably mounted on the sterile partition 700. A first end of the transmission shaft 710 is in transmission connection with the input end 101, and a second end of the transmission shaft 710 is in transmission connection with the output shaft 31, thereby preventing direct contact between the sheath adapter 20 and the power device, further reducing the probability of pathogen transmission.

[0062] Specifically, the first end of the transmission shaft 710 is provided with a plurality of second grooves (not shown) corresponding one-to-one with the first protrusions 1011, and the second end of the transmission shaft 710 is provided with a plurality of second protrusions (not shown) corresponding one-to-one with the first grooves. The first protrusions 1011 are plugged into the second grooves, and the second protrusions are plugged into the first grooves. For example, the material of the transmission shaft 710 can be a magnetic material to stabilize the connection.

[0063] In this embodiment, as shown in Figures 1 and 2, the surgical tool 10 includes at least one knob 12. A corresponding transmission mechanism consisting of a telescopic rod assembly 200, a cap 300, a speed reduction assembly 400, a telescopic sleeve assembly 500, and a cantilever 600 is provided, and at least one transmission shaft 710 is provided on the sterile partition 700 to improve adaptability.

[0064] In this embodiment, referring to Figures 1, 2, 6, and 7, a surgical tool 10 includes two knobs 12, for example. Specifically, the knobs 12 include a first knob 12a and a second knob 12b. The input end 101 includes a first input end 101a and a second input end 101b. The output shaft 31 includes a first output shaft 31a and a second output shaft 31b. The transmission shaft 710 includes a first transmission shaft 710a and a second transmission shaft 710b. The first output shaft 31a can be transmission-connected to the first input end 101a via the first transmission shaft 710a to transmit power to the first knob 12a, and the second output shaft 31b can be transmission-connected to the second input end 101b via the second transmission shaft 710b to transmit power to the second knob 12b. In this embodiment, the sheath adapter 20 is provided with two transmission mechanisms, one of which is transmission-connected to the first input end 101a, and the other is transmission-connected to the second input end 101b.

[0065] Specifically, the mounting platform 32 is stepped and includes a first platform 32a and a second platform 32b arranged horizontally, and a vertical side panel 32c arranged between the first platform 32a and the second platform 32b. The first output shaft 31a is arranged on the first platform 32a, and the second output shaft 31b is arranged on the second platform 32b. As shown in Figure 1, direction a is the vertical direction, and directions b and c are horizontal directions. The vertical direction is parallel to the plane of direction a, and the horizontal direction is parallel to the plane of directions b and c.

[0066] Furthermore, the support frame 100 includes a first frame body 110 and a second frame body 120 arranged on a first side of the first frame body 110. The bottom of the first frame body 110 can be arranged to protrude from the bottom of the second frame body 120 in the vertical direction. The first input end 101a is located at the bottom of the first frame body 110, and the second input end 101b is located at the bottom of the second frame body 120. In this embodiment, the first output shaft 31a and the second output shaft 31b both rotate around the vertical direction. The mounting platform 32 can limit the first side surface of the first frame body 110 and provide a reaction force through the side plate 32c, that is, the side plate 32c can be used to determine the relative position between the sheath adapter 20 and the power device, and can withstand the force brought by the transmission to reduce the torque exerted on the first input end 101a and the second input end 101b, effectively protect the first input end 101a, the second input end 101b, the first output shaft 31a and the second output shaft 31b, and further stabilize the fixation of the sheath adapter 20 relative to the mounting platform 32. The sterile partition 700 is designed to be stepped relative to the mounting platform 32 and the support frame 100. Of course, the bottom of the first frame 110 and the bottom of the second frame 120 can also be arranged on the same plane.

[0067] Exemplarily, the top of the first frame 110 is used to place the handle 11, and the top of the second frame 120 is arranged to protrude vertically from the top of the first frame 110. The second frame 120 forms a limit for the handle 11, which facilitates the positioning and placement of the handle 11 and effectively ensures the stability of the transmission of the surgical tool 10 and the sheath adapter 20.

[0068] In one feasible embodiment, a first knob 12a is provided on one side of the handle 11, and a second knob 12b is provided on the top surface of the handle 11. The two transmission mechanisms are respectively provided on opposite sides of the support frame 100 to prevent positional interference between the two transmission mechanisms. One of the two transmission mechanisms is provided on the first frame 110, and the other is provided on the second frame 120.

[0069] In a feasible embodiment, as shown in Figure 6, in the transmission mechanism provided on the first frame 110, the first end of the rotating shaft 210 is provided on the side of the first frame 110 facing away from the second frame 120 and is placed in the first frame 110, the first end of the rotating shaft 210 can be connected to the first input end 101a through the transmission assembly, the second end of the rotating shaft 210 is connected to the movable shaft 220, and the cap 300 is suitable for connecting to the first knob 12a. Wherein, the rotating shaft 210 is extended in the horizontal direction, for example, along the c direction. Further, the transmission assembly includes a third bevel gear 810 and a fourth bevel gear 820, the first input end 101a is set as an input shaft, the first end of the input shaft is rotatably connected to the bottom of the first frame 110, and the first end of the input shaft is provided with a first protrusion 1011, the second end of the input shaft is provided with a third bevel gear 810, and the first end of the rotating shaft 210 is provided with a fourth bevel gear 820. The input shaft is extended in the vertical direction. In this embodiment, the transmission assembly is provided to guide the transmission mechanism to an appropriate position of the first frame 110 for installation.

[0070] In a feasible embodiment, as shown in Figure 7, in the transmission mechanism arranged on the second frame body 120, the first end of the rotating shaft 210 is the second output end, the first end of the rotating shaft 210 passes through the top of the second frame body 120 in the vertical direction and extends to the bottom of the second frame body 120, and the first end of the rotating shaft 210 is rotatably connected to the bottom of the second frame body 120, and the cap 300 can be placed on the top of the first frame body 110 and is suitable for connecting with the second knob 12b.

[0071] In this embodiment, when the surgical tool 10 includes more than two knobs 12, the transmission mechanism can be guided to an appropriate position for installation through a gear meshing transmission assembly or other transmission assemblies to avoid position interference.

[0072] For example, taking the surgical tool 10 including two knobs 12 as an example, the steps for connecting the surgical tool 10 with the sheath adapter 20 are as follows:

[0073] First, the two movable sleeves 520 are pulled outwards in a direction away from the support frame 100 and the two movable sleeves 520 are rotated to make way for the cantilever 600 .

[0074] Then, the handle 11 is placed on the support frame 100 , the two movable sleeves 520 are reversed, and the two cover caps 300 are rotated so that the limiting rods and the limiting slots 320 correspond to each other.

[0075] Finally, push back the two movable sleeves 520 so that the two caps 300 are respectively sleeved on the first knob 12a and the second knob 12b, and then tighten the limiting rod and the fastener.

[0076] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A sheath adapter, characterized in that: include: Support frame (100); The telescopic rod assembly (200) comprises a rotating shaft (210) and a movable shaft (220), wherein a first end of the rotating shaft (210) is rotatably connected to the support frame (100), and a second end of the rotating shaft (210) is slidably connected to a first end of the movable shaft (220); The cap (300) comprises a receiving groove (310), and the cap (300) is connected to the second end of the movable shaft (220), the rotating shaft (210) can rotate to drive the cap (300) to rotate through the movable shaft (220), and the movable shaft (220) can slide axially to adjust the position of the cap (300) relative to the support frame (100).

2. The sheath adapter according to claim 1, characterized in that: One of the rotating shaft (210) and the movable shaft (220) is provided with a sliding channel (211), and the other is slidably inserted in the sliding channel (211).

3. The sheath adapter according to claim 1, characterized in that: A limiting groove (320) is provided on the groove wall of the containing groove (310).

4. The sheath adapter according to claim 1, characterized in that: It also includes a reduction assembly (400), wherein a first end of the reduction assembly (400) is connected to the movable shaft (220), and a second end of the reduction assembly (400) is connected to the cover cap (300), and the rotating shaft (210) is rotatable to drive the cover cap (300) to rotate via the movable shaft (220) and the reduction assembly (400).

5. The sheath adapter according to claim 4, characterized in that: Also includes: A telescopic sleeve assembly (500), wherein the telescopic rod assembly (200) is arranged inside the telescopic sleeve assembly (500), the telescopic sleeve assembly (500) comprises a fixed sleeve (510) fixedly connected to the support frame (100) and a movable sleeve (520) connected to the fixed sleeve (510), the movable sleeve (520) being capable of rotating and sliding relative to the fixed sleeve (510), and the movable sleeve (520) being rotatably connected to the movable shaft (220); A cantilever (600), wherein the first end of the cantilever (600) is fixedly connected to the movable sleeve (520), the second end of the cantilever (600) is provided with the cover cap (300), and the deceleration assembly (400) is provided inside the cantilever (600).

6. The sheath adapter according to claim 5, characterized in that: It also includes a fastener, which is inserted into the fixed sleeve (510) and abuts against the movable sleeve (520), and the fastener is threadedly connected to the fixed sleeve (510).

7. The sheath adapter according to claim 5, characterized in that: At least one slide groove (511) extending along the axial direction of the fixed sleeve (510) is arranged in the fixed sleeve (510); a circumferential groove (512) connected with the slide groove (511) is arranged in one end of the fixed sleeve (510) facing the movable sleeve (520); a sliding block portion (521) corresponding to the slide groove (511) is arranged in one end of the movable sleeve (520) facing the fixed sleeve (510); the sliding block portion (521) is slidably arranged in the slide groove (511) or the circumferential groove (512).

8. The sheath adapter according to any one of claims 1 to 7, characterized in that: It also includes a sterile partition (700) which is detachably arranged on the support frame (100), and the sterile partition (700) is arranged in close contact with the support frame (100).

9. The sheath adapter according to claim 8, characterized in that: A transmission shaft (710) is rotatably disposed on the sterile partition (700), and a first end of the transmission shaft (710) is detachably connected to the rotating shaft (210). The rotation of the transmission shaft (710) can drive the rotating shaft (210) to rotate.

10. A surgical assistance system, characterized in that: include: The sheath adapter (20) according to any one of claims 1 to 9; A power device, on which the sheath adapter (20) is detachably mounted, comprises an output shaft (31), and the rotation of the output shaft (31) can drive the rotating shaft (210) to rotate.

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