A sheath adapter and surgical assistance system

Abstract

This invention belongs to the field of medical device technology and discloses a sheath adapter and surgical assistance system. The sheath adapter includes a support frame, a telescopic rod assembly, and a cap. The telescopic rod assembly includes a rotating shaft and a movable shaft. 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. The cap includes a receiving groove for accommodating a knob, and the cap is connected to the second end of the movable shaft. The rotating shaft can rotate to drive the cap to rotate via the movable shaft, and the movable shaft can slide axially to adjust the position of the cap relative to the support frame. The sheath adapter provided by this invention, with its telescopic rod assembly, provides clearance for placing surgical instruments on the support frame, and the cap connects to the knob of the surgical instrument, facilitating assembly.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a sheath adapter and surgical assistance system. Background Technology

[0002] Minimally invasive surgery refers to surgeries performed using modern medical instruments and equipment such as laparoscopes and thoracoscopes. Minimal trauma, less pain, and faster 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. These instruments can be understood as medical devices that do not rely on any electrical or other energy source, but rather on energy generated directly by the human body or gravity; meaning they require manual operation by the surgeon. When performing complex procedures or using intricate minimally invasive surgical instruments, surgeons need a high level of skill and clinical experience. These procedures are more difficult and time-consuming. To ensure the success of the surgery, specialized power devices are used to control the minimally invasive surgical instruments.

[0003] Currently, minimally invasive surgical instruments are generally operated via knobs. Turning the knob controls the distal end of the instrument to complete the surgery. In existing technology, minimally invasive surgical instruments are typically driven by a sheath adapter connected to a power unit. To ensure transmission accuracy, existing sheath adapters usually connect to the minimally invasive surgical instrument via a worm gear engagement, meaning the knob is designed in the shape of a worm gear. However, even minimally invasive surgical instruments of the same type and specification may have different knob angles. Each assembly requires repeated adjustment of the worm gear angle of the sheath adapter to ensure precise meshing between the worm gear teeth on the knob and the worm gear of the sheath adapter, thus ensuring transmission accuracy. Specifically, after each adjustment of the worm gear angle, it is necessary to attempt to assemble the knob and worm gear and observe whether they mesh precisely. If the meshing requirement is not met, the worm gear angle must be readjusted until the meshing requirement is met, resulting in poor assembly convenience. Summary of the Invention

[0004] One object of the present invention is to provide a sheath adapter that facilitates assembly with surgical instruments.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A sheath adapter is provided, comprising:

[0007] Support frame;

[0008] The telescopic rod assembly includes a rotating shaft and a movable shaft, wherein a first end of the rotating shaft is rotatably connected to the support frame, and a second end of the rotating shaft is slidably connected to the first end of the movable shaft;

[0009] A cap includes a receiving groove and is connected to a second end of the movable shaft. The shaft is rotatable to drive the cap to rotate via the movable shaft, and the movable shaft is axially slidable to adjust the position of the cap relative to the support frame.

[0010] 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.

[0011] Optionally, a limiting groove is formed on the wall of the receiving groove.

[0012] Optionally, it also includes a deceleration assembly, the first end of which is connected to the movable shaft, the second end of which is connected to the cap, and the rotating shaft is rotatable to drive the cap to rotate via the movable shaft and the deceleration assembly.

[0013] Optionally, it also includes:

[0014] A telescopic sleeve assembly, wherein the telescopic rod assembly is disposed within the telescopic sleeve assembly, the telescopic sleeve assembly includes a fixed sleeve fixedly connected to the support frame and a movable sleeve connected to the fixed sleeve, the movable sleeve being rotatable and slidable relative to the fixed sleeve, and the movable sleeve being rotatably connected to the movable shaft;

[0015] The cantilever has a first end fixedly connected to the movable sleeve, a cap is provided at the second end of the cantilever, and the deceleration assembly is provided inside the cantilever.

[0016] Optionally, it also includes a fastener, which passes through the fixed sleeve and abuts against the movable sleeve, and the fastener is threadedly connected to the fixed sleeve.

[0017] Optionally, the fixed sleeve is provided with at least one sliding groove extending along the axis of the fixed sleeve, and the fixed sleeve is provided with a circumferential groove communicating with the sliding groove at one end facing the movable sleeve. The movable sleeve is provided with a slider part corresponding to the sliding groove at one end facing the fixed sleeve, and the slider part is slidably disposed in the sliding groove or the circumferential groove.

[0018] Optionally, it also includes a sterile partition, which is detachably mounted on the support frame and is fitted to the support frame.

[0019] Optionally, a drive shaft is rotatably mounted on the sterile partition, and the first end of the drive shaft is detachably connected to the rotating shaft. The rotation of the drive shaft can drive the rotating shaft to rotate.

[0020] Another object of the present invention is to provide a surgical assistance system, comprising:

[0021] The sheath adapter described in any of the above items;

[0022] A power unit, on which the sheath adapter is detachably mounted, the power unit includes an output shaft, the rotation of which can drive the rotating shaft to rotate.

[0023] Beneficial effects:

[0024] The sheath adapter provided by this invention allows for the following assembly process: The surgical instrument is placed on a support frame, and the sliding shaft moves the cap toward the knob of the surgical instrument until the knob is positioned in the receiving groove or rests against the cap. If the knob rests against the cap, the rotating shaft is rotated to rotate the cap via the sliding shaft until the angle of the cap is suitable for accommodating the knob. The sliding shaft is then slid again to position the knob in the receiving groove, facilitating assembly. Furthermore, the telescopic rod assembly, with the rotating shaft and the sliding shaft slidably connected, allows for clearance, facilitating the placement of the surgical instrument on the support frame and preventing positional interference between the surgical instrument and the sheath adapter that could affect assembly.

[0025] The surgical assistance system provided by this invention effectively ensures the ease of assembly between the sheath adapter and surgical tools. Attached Figure Description

[0026] Figure 1 This is an exploded view of the surgical assistance system provided by the present invention;

[0027] Figure 2 This is a schematic diagram of the surgical tool provided by the present invention installed on the sheath adapter;

[0028] Figure 3 This is a schematic diagram of the sheath adapter provided by the present invention from one perspective;

[0029] Figure 4 This is a schematic diagram of the sheath adapter provided by the present invention from another perspective;

[0030] Figure 5 This is a partial structural cross-sectional view of the sheath adapter provided by the present invention;

[0031] Figure 6 This is a schematic diagram of the internal structure of the sheath adapter provided by the present invention from one perspective;

[0032] Figure 7 This is a schematic diagram of the internal structure of the sheath adapter provided by the present invention from another perspective;

[0033] Figure 8 This is a schematic diagram of the structure of the first fixing sleeve provided by the present invention;

[0034] Figure 9 This is a schematic diagram of the structure of the first movable sleeve provided by the present invention.

[0035] In the picture:

[0036] 10. Surgical instrument; 11. Handle; 12. Knob; 12a. First knob; 12b. Second knob;

[0037] 20. Sheath adapter;

[0038] 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;

[0039] 100, Support frame; 101, Input end; 101a, First input end; 101b, Second input end; 1011, First protrusion; 102, Fixing part; 1021, Fixing hole; 110, First frame; 120, Second frame;

[0040] 200. Telescopic rod assembly; 210. Rotating shaft; 211. Sliding channel; 220. Movable shaft;

[0041] 300, Cap; 310, Receiving groove; 311, Fixing groove; 320, Limiting groove; 321, Limiting surface;

[0042] 400. Reduction gear assembly; 410. First bevel gear; 420. Second bevel gear; 430. Worm gear; 440. Worm wheel;

[0043] 500. Telescopic sleeve assembly; 510. Fixed sleeve; 511. Slide groove; 512. Circumferential groove; 520. Movable sleeve; 521. Slider section;

[0044] 600, cantilever;

[0045] 700. Sterile partition; 710. Drive shaft; 710a. First drive shaft; 710b. Second drive shaft; 720. Positioning pin;

[0046] 810, Third bevel gear; 820, Fourth bevel gear. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] Reference Figures 1 to 4 As shown, this embodiment provides a surgical assistance system for driving surgical instruments 10 during surgical operations. The surgical assistance system includes a sheath adapter 20 and a power unit, with the sheath adapter 20 detachably mounted on the power unit. The power unit is connected to the sheath adapter 20 via a transmission connection, allowing the surgical instruments 10 to be driven by the power unit through the sheath adapter 20.

[0052] Specifically, the surgical tool 10 includes a handle 11 and a knob 12 disposed on the handle 11.

[0053] 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 for receiving a 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 via 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.

[0054] Specifically, the power unit includes an output shaft 31, and the rotation of the output shaft 31 can drive the rotating shaft 210 to rotate.

[0055] In this embodiment, the sheath adapter 20 effectively ensures the ease of assembly between the sheath adapter 20 and the surgical tool 10. Specifically, during the assembly process of the sheath adapter 20 and the surgical tool 10, the surgical tool 10 is placed on the support frame 100, and the sliding shaft 220 moves the cap 300 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 against the cap 300. If the knob 12 abuts against the cap 300, the rotating shaft 210 is rotated to drive the cap to rotate through the sliding shaft 220 until the angle of the cap is suitable for accommodating the knob 12. The sliding shaft 220 is then slid again to place the knob 12 in the receiving groove 310, facilitating assembly. In addition, the knob 12 is rotated by the cap 300, which is stable, reliable and highly accurate. The telescopic rod assembly 200, i.e. the rotating shaft 210 and the movable shaft 220 are slidably connected, can create clearance to facilitate the placement of the surgical tool 10 on the support frame 100, and avoid positional interference between the surgical tool 10 and the sheath adapter 20, which would affect the assembly.

[0056] In one feasible implementation, such as Figure 4 As shown, a fixing groove 311 (not shown) is provided at intervals on one side of the periphery of the knob 12 and the groove wall of the receiving groove 310 of the cap 300, and a fixing protrusion (not shown) is provided at intervals on the other side. The fixing protrusion is disposed within the fixing groove 311 to achieve a transmission engagement between the knob 12 and the cap 300. Exemplarily, at least one fixing groove 311 and one fixing protrusion are provided respectively, and the fixing protrusions can be correspondingly disposed within the fixing groove 311. 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 be other shapes, such as wavy, polygonal, or toothed.

[0057] In one feasible implementation, such as Figure 4As shown, a limiting rod (not shown) is provided on the knob 12, and a limiting groove 320 is formed on the groove wall of the receiving groove 310. The limiting groove 320 is used to receive the limiting rod. Exemplarily, the limiting groove 320 includes two mutually parallel limiting surfaces 321 that are perpendicular to the center line 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. Exemplarily, at least one limiting rod and at least one limiting groove 320 are provided, and the limiting groove 320 can accommodate the limiting rod one by one.

[0058] For example, the limiting rod can be located around the knob 12. The first end of the limiting rod is threaded to the knob 12, and the second end of the limiting rod is provided with a head. The head is used to press the cap 300 to form a fixed connection between the cap 300 and the knob 12, effectively ensuring the transmission accuracy between the cap 300 and the knob 12. For example, the limiting rod can be a screw.

[0059] In one feasible implementation, such as Figure 5 As shown, 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 as an example, the inner surface of the sliding channel 211 fits against the periphery 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. Exemplarily, the sliding channel 211 is provided with a long groove (not shown) extending along the axial direction of the rotating shaft 210, and the periphery of the movable shaft 220 is provided with a long strip protrusion (not shown) extending along its own axial direction. The long strip protrusion is placed in the long groove to form a limit, so that the movable shaft 220 can rotate together with the rotating shaft 210. Of course, the shape of the sliding channel 211 can also be spline-shaped, square, elliptical, or other shapes, which is not limited in this application.

[0060] In this embodiment, reference is made to Figure 6As shown, the sheath adapter 20 also includes a reduction gear assembly 400. The first end of the reduction gear assembly 400 is connected to the movable shaft 220, and the second end is connected to the cap 300. The rotating shaft 210 is rotatable to drive the cap 300 to rotate via the movable shaft 220 and the reduction gear assembly 400. In this embodiment, the reduction gear assembly 400 increases the transmission ratio, ensuring the transmission accuracy between the telescopic rod assembly 200 and the knob 12, and allowing for the use of a smaller drive motor as the power unit. For example, firstly, the movable shaft 220 is pulled outward in a direction away from the support frame 100, so that the reduction gear set and the cap 300 are away from the support frame 100, creating clearance; then, the rotating shaft 210 is rotated so that the cap 300 corresponds to the knob 12; finally, the cap 300 is rotated so that the limiting rod and the limiting groove 320 correspond, and the movable shaft 220 is pushed back so that the cap 300 is fitted onto the knob 12, completing the assembly of the sheath adapter 20 and the knob 12, which is simple and convenient.

[0061] 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 on the first end of the worm 430 and meshes with the worm wheel 440. The worm wheel 440 is connected to the first cap 300. Exemplarily, 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 its meshing with the worm wheel 440, drives the cap 300 to rotate. In this embodiment, the orientation of the cap 300 is changed through the meshing transmission of the first bevel gear 410 and the second bevel gear 420, as well as the meshing transmission of the worm 430 and the worm wheel 440, making the cap 300 suitable for assembly with the knob 12. In addition, the worm gear 430 and worm wheel 440 have a self-locking function, which effectively ensures stable and reliable transmission between the sheath adapter 20 and the knob 12.

[0062] In this embodiment, reference is made to Figure 7As shown, the sheath adapter 20 also includes a telescopic sleeve assembly 500 and a cantilever 600. The telescopic sleeve assembly 500 is provided with a telescopic rod assembly 200. 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. 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. The cantilever 600 is provided with a deceleration assembly 400. Among them, the movable sleeve 520, relative to the fixed sleeve 510, can drive the movable shaft 220 to slide, realizing the extension and retraction of the movable shaft 220 relative to the rotating shaft 210; rotating the movable sleeve 520 can make the cantilever 600 rotate so that the cantilever 600 can avoid obstacles, making it convenient for the handle 11 to be placed 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, which facilitates the assembly of the sheath adapter 20 and the knob 12.

[0063] 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, both the worm gear 430 and the worm wheel 440 are rotatably connected to the cantilever 600.

[0064] In this embodiment, reference is made to Figure 5 , Figure 8 and Figure 9As shown, at least one slide groove 511 extending along the axis of the fixed sleeve 510 is provided inside the fixed sleeve 510, for example, two. A circumferential groove 512 communicating with the slide groove 511 is provided inside the fixed sleeve 510 facing the movable sleeve 520. A slider part 521 corresponding to the slide groove 511 is provided at the movable sleeve 520 facing the fixed sleeve 510. The slider part 521 is slidably disposed in the slide groove 511 or the circumferential groove 512. For example, first, pull the movable sleeve 520 outward in a direction away from the support frame 100, so that the slider part 521 slides from the slide groove 511 into the circumferential groove 512. Rotate the movable sleeve 520 to create clearance, and place the handle 11 on the support frame 100. Then, reverse the movable sleeve 520 so that the slider part 521 is aligned with the slide groove 511. Rotate the cap 300 so that the limiting rod and the limiting groove 320 correspond. Finally, push the movable sleeve 520 back again so that the cap 300 is fitted onto the knob 12, completing the assembly of the sheath adapter 20 and the knob 12, which is simple and convenient. When the handle 11 is placed on the support frame 100 and the slider part 521 is aligned with the slide groove 511, the movable sleeve 520 can be pushed back slightly to allow the slider part 521 to slide into the slide groove 511 first. Then, the cap 300 is rotated to make the limiting rod and the limiting groove 320 correspond. Pushing back the movable sleeve 520 slightly can be understood as allowing the slider part 521 to slide into the slide groove 511 first, while maintaining an appropriate distance between the cap 300 and the knob 12. At this time, rotating the cap 300 will not cause the cantilever 600 to rotate, which can simplify the assembly process.

[0065] In one possible embodiment, the sheath adapter 20 further includes a fastener (not shown) that passes through the fixed sleeve 510 and abuts against the movable sleeve 520, and the fastener is threadedly connected to the fixed sleeve 510. After the cap 300 and the knob 12 are assembled, tightening the fastener compresses the movable sleeve 520, thereby fixing the movable sleeve 520 relative to the fixed sleeve 510 and preventing the cap 300 from disengaging from the knob 12.

[0066] In one feasible implementation, the worm gear 430 can be a telescopic rod to adjust the distance between the cap 300 and the telescopic rod assembly 200, thereby increasing the adaptability of the sheath adapter 20. Its structure can be the same as that of the telescopic rod assembly 200, which will not be described in detail here. Furthermore, the cantilever 600 can be configured with the same structure as the telescopic sleeve assembly 500, which will not be described in detail here.

[0067] In this embodiment, reference is made to Figure 1 and Figure 4As shown, 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 through the input end 101 to drive the rotating shaft 210 to rotate. The power device also includes a mounting platform 32, on which the output shaft 31 is mounted. In this embodiment, the input end 101 is located at the bottom of the support frame 100. When the sheath adapter 20 containing 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 connected to the output shaft 31 of the power device by the weight of the sheath adapter 20 and the surgical tool 10 and the engagement of the positioning pin 720 and the pin hole 33 at the bottom of the support frame 100, which is stable and reliable.

[0068] Specifically, the output shaft 31 of the power unit 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 inserted into the first grooves one by one to transmit torque, which facilitates the transmission connection between the sheath adapter 20 and the power unit. The first protrusions 1011 on the input end 101 are also beneficial for sterilization.

[0069] For example, the input terminal 101 can be made of a magnetic material for stable connection. For example, both the first groove and the first protrusion 1011 are provided in twos.

[0070] In one feasible implementation, such as Figure 3 As shown, the bottom of the support frame 100 extends to form a fixing part 102. The fixing part 102 has at least one fixing hole 1021. A fastening screw (not shown) passes through the fixing hole 1021 and is threadedly connected to the mounting platform 32 to fix the sheath adapter 20 to the mounting platform 32.

[0071] In one feasible implementation, the support frame 100 is made of a magnetic material, and the support frame 100 and the mounting platform 32 can be magnetically connected and fixed. In this embodiment, fastening screws are not required, making the installation operation more convenient.

[0072] In this embodiment, reference is made to Figure 1As shown, the sheath adapter 20 also includes a sterile partition 700, which is detachably mounted on the support frame 100 and is fitted to the support frame 100. In this embodiment, the first side of the sterile partition 700 is fitted to the support frame 100, and the second side of the sterile partition 700 is fitted to the mounting platform 32. This effectively avoids 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 unit, 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; this application does not impose specific limitations.

[0073] In one feasible implementation, at least a portion of the sterile partition 700 is configured as a magnetic attraction area, which can magnetically attract the support frame 100 and the mounting platform 32 to stabilize the sheath adapter 20 relative to the mounting platform 32.

[0074] In one feasible implementation, the sterile partition 700 is provided with a plurality of positioning pins 720, such as two. The two ends of the positioning pins 720 protrude from the first side and the second side of the sterile partition 700, respectively. The support frame 100 and the mounting platform 32 are 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.

[0075] In one feasible implementation, the sterile partition 700 can be replaced with a sterile membrane to prevent the support frame 100 from directly contacting 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 pin 720 can be disposed on the mounting platform 32.

[0076] In this embodiment, reference continues to be made to... Figure 1 As shown, a drive shaft 710 is rotatably mounted on the sterile partition 700. The first end of the drive shaft 710 is connected to the input end 101, and the second end of the drive shaft 710 is connected to the output shaft 31, thereby avoiding direct contact between the sheath adapter 20 and the power unit and further reducing the probability of pathogen transmission.

[0077] Specifically, the first end of the drive 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 drive 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 inserted into the second grooves, and the second protrusions are inserted into the first grooves. For example, the drive shaft 710 can be made of a magnetic material for stable connection.

[0078] In this embodiment, reference is made to Figure 1 and Figure 2 As shown, the surgical tool 10 includes at least one knob 12. At least one transmission mechanism consisting of the corresponding telescopic rod assembly 200, cap 300, deceleration assembly 400, telescopic sleeve assembly 500, and cantilever 600 is provided, and at least one drive shaft 710 is provided on the sterile partition 700 to improve adaptability.

[0079] In this embodiment, reference is made to Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, taking the surgical tool 10 as an example, it includes two knobs 12, namely, a first knob 12a and a second knob 12b; an input end 101 includes a first input end 101a and a second input end 101b; an output shaft 31 includes a first output shaft 31a and a second output shaft 31b; and a transmission shaft 710 includes a first transmission shaft 710a and a second transmission shaft 710b. The first output shaft 31a can be 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 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 connected to the first input end 101a and the other is connected to the second input end 101b.

[0080] Specifically, the mounting platform 32 is stepped, comprising a horizontally arranged first platform 32a and a second platform 32b, and a vertically arranged side plate 32c, which is positioned between the first platform 32a and the second platform 32b. A first output shaft 31a is mounted on the first platform 32a, and a second output shaft 31b is mounted on the second platform 32b. Wherein, as... Figure 1 As shown, direction a is the vertical direction, and directions b and c are the horizontal directions. The vertical direction is set to be parallel to the plane containing direction a, and the horizontal direction is set to be parallel to the plane containing directions b and c.

[0081] Furthermore, the support frame 100 includes a first frame 110 and a second frame 120 disposed on a first side of the first frame 110. The bottom of the first frame 110 can protrude vertically from the bottom of the second frame 120. The first input end 101a is located at the bottom of the first frame 110, and the second input end 101b is located at the bottom of the second frame 120. In this embodiment, both the first output shaft 31a and the second output shaft 31b rotate about the vertical direction. The mounting platform 32 can limit the first side of the first frame 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, so as to reduce the torque 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 in a stepped shape 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 set on the same plane.

[0082] For example, the top of the first frame 110 is used to place the handle 11, and the top of the second frame 120 protrudes vertically from the top of the first frame 110. The second frame 120 limits the handle 11, which facilitates the positioning and placement of the handle 11 and effectively ensures the stability of the transmission between the surgical tool 10 and the sheath adapter 20.

[0083] In one feasible implementation, 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 avoid 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.

[0084] In one feasible implementation, such as Figure 6As shown, in the transmission mechanism disposed on the first frame 110, the first end of the rotating shaft 210 passes through the side of the first frame 110 facing away from the second frame 120 and is placed inside 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 adapted to be connected to the first knob 12a. The rotating shaft 210 extends horizontally, for example, extending along direction c. Further, the transmission assembly includes a third bevel gear 810 and a fourth bevel gear 820. The first input end 101a is configured 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 the third bevel gear 810, and the first end of the rotating shaft 210 is provided with the fourth bevel gear 820. The input shaft extends vertically. In this embodiment, the transmission mechanism is guided to a suitable position on the first frame 110 for installation by means of a transmission component.

[0085] In one feasible implementation, such as Figure 7 As shown, in the transmission mechanism provided on the second frame 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 120 in the vertical direction and extends to the bottom of the second frame 120. The first end of the rotating shaft 210 is rotatably connected to the bottom of the second frame 120. The cap 300 can be placed on the top of the first frame 110 and is suitable for connection with the second knob 12b.

[0086] In this embodiment, when the surgical tool 10 includes two or more knobs 12, the transmission mechanism can be guided to the appropriate position for installation by gear meshing transmission components or other transmission components to avoid positional interference.

[0087] For example, taking surgical tool 10 as an example that includes two knobs 12, the steps for connecting surgical tool 10 and sheath adapter 20 are as follows:

[0088] First, pull the two movable sleeves 520 outward in a direction away from the support frame 100, and rotate the two movable sleeves 520 to make the cantilever 600 move out of position.

[0089] Then, place the handle 11 on the support frame 100, reverse the two movable sleeves 520, and rotate the two caps 300 so that the limit rod and the limit groove 320 correspond.

[0090] Finally, push back the two movable sleeves 520 so that the two caps 300 are respectively fitted onto the first knob 12a and the second knob 12b, and tighten the limiting rod and fastener.

[0091] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should 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) for holding surgical instruments (10); The telescopic rod assembly (200) includes a rotating shaft (210) and a movable shaft (220), wherein 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) for receiving the knob (12) of the surgical tool (10), and the cap (300) is connected to the second end of the movable shaft (220), the shaft (210) is rotatable to drive the cap (300) to rotate via the movable shaft (220), the rotation of the cap (300) can drive the knob (12) to rotate, and the movable shaft (220) is axially slidable 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 into the sliding channel (211).

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

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

5. The sheath adapter according to claim 4, characterized in that, Also includes: Telescopic sleeve assembly (500), wherein the telescopic rod assembly (200) is disposed within 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) being rotatable and slidable relative to the fixed sleeve (510), and the movable sleeve (520) being rotatably connected to the movable shaft (220); A cantilever (600) is provided with a cap (300) at its first end and a deceleration assembly (400) inside the cantilever (600).

6. The sheath adapter according to claim 5, characterized in that, It also includes fasteners that pass through the fixed sleeve (510) and abut against the movable sleeve (520), and the fasteners are threadedly connected to the fixed sleeve (510).

7. The sheath adapter according to claim 5, characterized in that, The fixed sleeve (510) is provided with at least one sliding groove (511) extending along the axis of the fixed sleeve (510). The fixed sleeve (510) is provided with a circumferential groove (512) communicating with the sliding groove (511) at one end facing the movable sleeve (520). The movable sleeve (520) is provided with a slider part (521) corresponding to the sliding groove (511) at one end facing the fixed sleeve (510). The slider part (521) is slidably disposed in the sliding groove (511) or the circumferential groove (512).

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

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

10. A surgical assistance system, characterized in that, include: The sheath adapter (20) as described in any one of claims 1-9; The power unit is provided with a detachable sheath adapter (20) and includes an output shaft (31). The rotation of the output shaft (31) can drive the rotating shaft (210) to rotate.

Images