Adapter and surgical assistance system

Abstract

An adapter and a surgical assistance system. The adapter comprises: a base (100), comprising a support (101), a first input shaft (102), and a second input shaft (103); a rotary base (200) and a rotary base transmission assembly, wherein the rotary base transmission assembly comprises a first gear ring (201), the rotary base (200) is rotatably arranged on the support (101), the first input shaft (102) is in transmission connection with the first gear ring (201), and the first gear ring (201) is relatively fixed to the rotary base (200); a catheter system driving assembly (300) and a catheter system transmission assembly, wherein the catheter system driving assembly (300) is arranged on the rotary base (200), the catheter system transmission assembly comprises a second gear ring (301) and a planetary gear (302), the second input shaft (103) is in transmission connection with the second gear ring (301), the second gear ring (301) is in transmission connection with the planetary gear (302), a shaft of the planetary gear (302) is fixed to the rotary base (200), and the planetary gear (302) is configured for driving the catheter system driving assembly (300). By means of two relatively independent transmission assemblies, the adapter enables two remote operations on the catheter system, thereby improving the working environment of medical professionals and shortening the learning curve for surgeons.

Description

Adapter and surgical auxiliary system

[0001] This application claims priority to the Chinese patent application No. CN 202411126451X, filed on August 15, 2024, entitled "Adapter and surgical auxiliary system", the disclosure of which is incorporated herein by reference. TECHNICAL FIELD

[0002] The present application belongs to the technical field of medical devices, and in particular relates to an adapter and a surgical auxiliary system. BACKGROUND

[0003] Currently, for the treatment of mitral regurgitation, minimally invasive surgery is generally used, that is, a valve repair device is delivered to the mitral valve by using a catheter system, and the diseased mitral valve is repaired by remote operation outside the patient's body, so as to treat the mitral regurgitation. The catheter system is a multi-layer structure, and the outer sheath needs to enter the right atrium along the femoral vein, and then pass through the interatrial septum to enter the left atrium, so as to ensure that the valve repair device can be delivered to the mitral valve.

[0004] Among them, the catheter system needs to be manually operated by the doctor during use, and the operation difficulty is high, the technical level and clinical experience of the doctor are relatively high, and the learning curve of the doctor is long, which to some extent restricts the development of the operation or the use of the device in the clinic. During the operation, the doctor needs to perform the operation under the condition of cooperation with the CT device in most cases, which causes the medical staff to be exposed to the environment with radiation for a long time, which will cause a certain degree of harm to their health. Therefore, it is necessary to provide an adapter capable of remotely operating the catheter system to improve the working environment of the medical staff and shorten the learning curve of the doctor. SUMMARY

[0005] In view of the problems existing in the prior art, an adapter and a surgical auxiliary system are provided, which can remotely operate the catheter system, improve the working environment of the medical staff, and shorten the learning curve of the doctor.

[0006] The present application provides the following solutions.

[0007] In a first aspect, the present application provides an adapter, comprising:

[0008] a base comprising a support, a first input shaft and a second input shaft;

[0009] a swivel base and a swivel base transmission assembly, the swivel base transmission assembly comprising a first ring gear, the swivel base being rotatably arranged on the support, the first input shaft being in transmission connection with the first ring gear, and the first ring gear being fixed relative to the swivel base;

[0010] The catheter system drive assembly is arranged on the slewing base, and the catheter system transmission assembly comprises a second ring gear and a planetary gear, the second input shaft is in transmission connection with the second ring gear, the second ring gear is in transmission connection with the planetary gear, the shaft of the planetary gear is fixed on the slewing base, and the planetary gear is used for driving the catheter system drive assembly.

[0011] In some possible embodiments, the first ring gear and the second ring gear are arranged on two sides of the support respectively.

[0012] The first ring gear and the second ring gear are independent of each other.

[0013] In some possible embodiments, the slewing base transmission assembly further comprises a first power input gear and a first transmission gear, the first transmission gear comprises a first gear part and a second gear part fixedly connected;

[0014] The first power input gear is sleeved on the first input shaft, the first power input gear is in meshing connection with the first gear part, and the second gear part is in meshing connection with the first ring gear.

[0015] In some possible embodiments, the first gear part is connected with the second gear part through a first gear shaft, the first gear shaft passes through the support, and the first gear part and the second gear part are located on two sides of the support respectively.

[0016] In some possible embodiments, the second ring gear comprises a relatively fixed outer ring gear and an inner ring gear, the second input shaft is in transmission connection with the outer ring gear, and the inner ring gear is in meshing connection with the planetary gear.

[0017] In some possible embodiments, the catheter system transmission assembly further comprises a flexible transmission assembly;

[0018] The planetary gear is connected with the catheter system drive assembly through the flexible transmission assembly.

[0019] In some possible embodiments, the catheter system transmission assembly further comprises a second power input gear and a second transmission gear, the second transmission gear comprises a third gear part and a fourth gear part fixedly connected;

[0020] The second power input gear is sleeved on the second input shaft, the third gear part is in meshing connection with the second power input gear, and the fourth gear part is in meshing connection with the outer ring gear.

[0021] In some possible embodiments, the third gear part is connected with the fourth gear part through a second gear shaft,

[0022] The second gear shaft passes through the support, and the third gear part and the fourth gear part are located on the same side of the support.

[0023] In some possible embodiments, the catheter system comprises an outer catheter unit, a middle catheter unit and an inner catheter unit, the swivel base is used for mounting the outer catheter unit, and the catheter system driving assembly is used for driving the knob of the outer catheter unit.

[0024] In some possible embodiments, the bracket is provided with a first channel, the swivel base is provided with a second channel, and the first channel and the second channel constitute a middle channel structure of the adapter.

[0025] The middle channel structure is used for accommodating the outer catheter unit.

[0026] In some possible embodiments, the adapter further comprises a cover, and the cover is arranged on the side of the second ring gear away from the base.

[0027] The cover further comprises a fixing screw, the cover is provided with a first fixing hole, the bracket is provided with a second fixing hole, and the adapter corresponding adapter transmission device is provided with a screw hole, and the fixing screw is fixed on the adapter transmission device through the first fixing hole, the second fixing hole and the screw hole.

[0028] The adapter transmission device is used for driving the first input shaft and the second input shaft.

[0029] In some possible embodiments, the screw hole is provided with a first thread.

[0030] The first part of the shank of the fixing screw close to the nut is a smooth surface, and the second part of the shank away from the nut is provided with a second thread corresponding to the first thread.

[0031] The outer diameter of the first part of the shank is less than or equal to the minimum inner diameter of the first fixing hole, the outer diameter of the second part of the shank is greater than the minimum inner diameter of the first fixing hole, and the outer diameter of the second part of the shank is less than or equal to the inner diameter of the second fixing hole.

[0032] In some possible embodiments, the first fixing hole comprises an axially connected first through hole and a second through hole, and the first through hole is arranged on the side away from the second fixing hole.

[0033] The inner diameter of the first through hole is equal to or greater than the outer diameter of the first part of the shank, the inner diameter of the first through hole is less than the outer diameter of the second part of the shank, and the inner diameter of the second through hole is greater than or equal to the outer diameter of the second part of the shank.

[0034] In the second aspect, the embodiments of the present application provide a surgical auxiliary system, which comprises an adapter transmission device and the above-mentioned adapter, and the adapter transmission device is used for driving the first input shaft and the second input shaft of the adapter respectively.

[0035] The adapter provided by the embodiment of the present application can operate the rotating base to rotate through the rotating base and the rotating base transmission assembly, drive the components in the catheter system to make the catheter system perform corresponding actions through the catheter system drive assembly and the catheter system transmission assembly. Thus, the adapter provided by the embodiment of the present application can realize two kinds of remote operations on the catheter system through two groups of relatively independent transmission assemblies, improve the working environment of medical staff and shorten the learning curve of doctors.

[0036] Other advantages of the present application will be described in more detail in conjunction with the following description and drawings.

[0037] It should be understood that the above description is only a summary of the technical solutions of the present application, so as to enable a clearer understanding of the technical means of the present application, and thus the content of the description can be implemented. In order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS

[0038] The advantages and benefits described herein, as well as other advantages and benefits, will be apparent to those of ordinary skill in the art upon reading the following detailed description of exemplary embodiments. The drawings are for purposes of illustrating exemplary embodiments and are not considered to be limiting of the present application. Moreover, the same reference numerals are used throughout the various drawings to represent similar or same components. In the drawings:

[0039] Fig. 1 is an assembly schematic view of an adapter and an outer catheter unit provided by the embodiment of the present application;

[0040] Fig. 2 is a split schematic view of an adapter provided by the embodiment of the present application;

[0041] Fig. 3 is a schematic view of an outer catheter unit provided by the embodiment of the present application;

[0042] Fig. 4 is a schematic view of an adapter provided by the embodiment of the present application;

[0043] Fig. 5 is a split schematic view of an adapter provided by the embodiment of the present application;

[0044] Fig. 6 is a split schematic view of another adapter provided by the embodiment of the present application;

[0045] Fig. 7 is a schematic view of an adapter provided by the embodiment of the present application;

[0046] Fig. 8 is a schematic view of a fixing screw provided by the embodiment of the present application;

[0047] Fig. 9 is a schematic view of a cover provided by the embodiment of the present application;

[0048] Fig. 10 is a schematic view of an adapter provided by the embodiment of the present application.

[0049] In the drawings, the components listed in the following table are represented by the same reference numerals: base 100; support 101; first input shaft 102; second input shaft 103; swivel base 200; first ring gear 201; first check ring 211; first power input gear 202; first transmission gear 203; first gear portion 213; second gear portion 223; first gear shaft 233; catheter system drive assembly 300; second ring gear 301; outer ring gear 311; inner ring gear 321; second check ring 331; planetary gear 302; second power input gear 303; second transmission gear 304; third gear portion 314; fourth gear portion 324; second gear shaft 334; flexible transmission assembly 305; housing 400; fixing screw 401; first portion of nail rod 411; second portion of nail rod 421; first fixing hole 402; first through hole 412; second through hole 422; outer catheter unit A; handle A1; sheath A2; knob A3; joint A4.

[0050] In the drawings, the same or corresponding parts are denoted by the same reference numerals. DETAILED DESCRIPTION

[0051] Exemplary embodiments of the present application will be described in detail with reference to the drawings. Although exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application can be embodied in various forms without being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present application will be thorough and complete, and will fully convey the scope of the present application to those skilled in the art.

[0052] In the description of embodiments of the present application, it will be understood that terms such as "include" or "has" are intended to indicate that there are the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and do not exclude the possibility that one or more other features, numbers, steps, actions, components, parts, or combinations thereof exist. The terms "first", "second", and the like are used only to facilitate the description and are not intended to indicate or imply relative importance or quantity of the technical features. Thus, the features defined by "first", "second", and the like can explicitly or implicitly include one or more such features. In the description of embodiments of the present application, unless otherwise stated, the term "a plurality of" means two or more than two.

[0053] Unless otherwise defined, "or" means any or. The statement that "one or more of A and B" means "A alone, B alone, or A and B together" is merely a description of the ways that the associated objects can be combined. Spatially relative terms, such as "under", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures.

[0054] In addition, it needs to be explained that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0055] The delivery system is commonly used as an auxiliary device in minimally invasive surgery, which is mainly used to deliver interventional treatment devices to the patient's body to achieve the purpose of treatment, for example, delivering a valve repair device to the patient's mitral valve or tricuspid valve and operating remotely outside the patient's body to repair the diseased mitral valve or tricuspid valve; for example, delivering a stent to the patient's blood vessel to treat blood vessel stenosis, etc. The delivery system includes at least one sheath system, which usually includes a sheath and an operating device, such as a handle, connected to the proximal end of the sheath and used to control the movement of the sheath.

[0056] In the delivery system for delivering a mitral valve repair device, the delivery system can include an outer sheath unit, a middle sheath unit, and an inner sheath unit. The outer sheath unit includes an outer sheath tube, which needs to enter the right atrium along the femoral vein, and then the outer sheath tube is bent, the orientation of the end of the outer sheath tube is adjusted by rotating the outer sheath tube, and it is ensured that the outer sheath tube can face the atrial septum, so that the outer sheath tube can penetrate the atrial septum and enter the left atrium under the action of the guide wire. The middle sheath unit includes a middle sheath tube, which is arranged in the outer sheath tube and can be extended from the end of the outer sheath tube, the extended part of the middle sheath tube can be bent left and right in a first plane, and can also be bent left and right in a second plane, and the first plane and the second plane are arranged at an angle. When the outer sheath tube reaches the left atrium, the middle sheath tube penetrates the outer sheath tube and extends in the left atrium, and in the process of moving the middle sheath tube relative to the outer sheath tube, the bending direction and the bending degree of the middle sheath tube in the first plane and the second plane need to be adjusted in real time according to the bending direction and the bending degree of the outer sheath tube, so that the middle sheath tube can reach the appropriate position. The inner sheath unit includes an inner sheath tube, which is arranged in the middle sheath tube and can be extended from the end of the middle sheath tube, the end of the inner sheath tube is detachably connected with the valve repair device, the inner sheath tube can penetrate the middle sheath tube and extend in the left atrium, and then the inner sheath tube is bent towards the position of the mitral valve and continues to extend towards the mitral valve, so as to deliver the valve repair device to the mitral valve.

[0057] With the above sheath unit as an example, as shown in FIG. 1, the adapter 10 provided by the embodiment of the present application can be used to control the outer catheter unit A, which includes a handle A1, a sheath tube A2 and a knob A3. The proximal end of the sheath tube A2 is arranged on the handle A1, and the knob A3 is arranged on the handle A1 and used to drive the sheath tube A2 to bend. The adapter 10 includes a base 100, a rotary base 200 and a catheter system driving assembly 300. The rotary base 200 of the adapter 10 is used to drive the handle A1 and the entire outer catheter unit A to rotate, and the catheter system driving assembly 300 is used to drive the knob A3 of the outer catheter unit A to rotate.

[0058] The adapter 10 provided by the embodiment of the present application will be specifically introduced below. Referring to FIG. 1, which is a schematic diagram of an adapter provided by the embodiment of the present application.

[0059] As shown in FIG. 2, the adapter provided by the embodiment of the present application includes:

[0060] The base 100 includes a support 101, a first input shaft 102 and a second input shaft 103.

[0061] The rotary base 200 and a rotary base transmission assembly. The rotary base transmission assembly includes a first ring gear 201. The rotary base 200 is rotatably arranged on the support 101. The first input shaft 102 is in transmission connection with the first ring gear 201. The first ring gear 201 is fixed relative to the rotary base 200.

[0062] The catheter system driving assembly 300 and a catheter system transmission assembly. The catheter system driving assembly 300 is arranged on the rotary base 200. The catheter system transmission assembly includes a second ring gear 301 and a planetary gear 302. The second input shaft 103 is in transmission connection with the second ring gear 301. The second ring gear 301 is in transmission connection with the planetary gear 302. The shaft of the planetary gear 302 is fixed on the rotary base 200. The planetary gear 302 is used to drive the catheter system driving assembly 300.

[0063] Therefore, the adapter provided by the embodiment of the present application can operate the rotary base to rotate through the rotary base and the rotary base transmission assembly, and drive the components in the catheter system to make the catheter system perform corresponding actions through the catheter system driving assembly and the catheter system transmission assembly. Thus, the adapter provided by the embodiment of the present application can realize two kinds of remote operations on the catheter system through two relatively independent transmission assemblies, improve the working environment of medical staff and shorten the learning curve of doctors.

[0064] In order to make the independence between the catheter system transmission assembly and the rotary base transmission assembly higher, that is, the two do not interfere with each other when running. The first ring gear 201 and the second ring gear 301 in the embodiment of the application can be arranged on the two sides of the support 101 respectively, so that the first ring gear 201 and the second ring gear 301 are independent of each other and do not interfere with each other in any relative position.

[0065] As shown in FIG. 2, the support 101 is provided with a first channel, and the rotary base 200 is provided with a second channel, and the first channel and the second channel constitute a middle passage structure of the adapter 10. The middle passage structure is used to accommodate the outer catheter unit A. As shown in FIG. 3, the outer catheter unit A further includes a joint A4. The joint A4 can be a luer joint. The joint A4 is used to connect an extension tube, a joint, a syringe or other medical devices, and when the outer catheter unit A is installed on the adapter 1, the joint A4 is located in the middle passage structure of the adapter 10. Therefore, if the diameter of the middle passage structure is small, the connection of the extension tube, the joint, the syringe or other medical devices to the outer catheter unit A will be limited. The middle passage structure formed by the cooperation of the first ring gear 201, the second ring gear 301 and the support 100 in the embodiment of the application has a large diameter, which facilitates the installation of the extension tube, the joint, the syringe or other medical devices to the adapter 10 during use of the adapter 10.

[0066] As shown in FIG. 4 and FIG. 5, the rotary base transmission assembly in the embodiment of the application further includes a first power input gear 202 and a first transmission gear 203, and the first transmission gear 203 includes a first gear portion 213 and a second gear portion 223 fixedly connected. The first power input gear 202 is sleeved on the first input shaft 102, the first power input gear 202 is engaged with the first gear portion 213, and the second gear portion 223 is engaged with the first ring gear 201. Among them, the first gear portion 213 is connected to the second gear portion 223 through a first gear shaft 233, the first gear shaft 233 passes through the support 101, and the first gear portion 213 and the second gear portion 223 are located on the two sides of the support 101 respectively.

[0067] As shown in FIG. 4 and FIG. 5, the catheter system transmission assembly further includes a second power input gear 303 and a second transmission gear 304, and the second transmission gear 304 includes a third gear portion 314 and a fourth gear portion 324 fixedly connected. The second power input gear 303 is sleeved on the second input shaft 103, and the third gear portion 314 is engaged with the second power input gear 303. Among them, the third gear portion 314 is connected to the fourth gear portion 324 through a second gear shaft 334, the second gear shaft 334 passes through the support 101, and the third gear portion 314 and the fourth gear portion 324 are located on the same side of the support 101.

[0068] As shown in FIG. 6, the first ring gear 201 can be an outer ring gear. The first ring gear 201 is fixedly connected with the swivel base 200 in the axial direction. The swivel base 200 can be provided with a radial protruding structure, and the first ring gear 201 is provided with a hole matching the protruding structure on the swivel base 200. Through the matching protruding structure and the hole, the first ring gear 201 is fixedly connected with the swivel base 200 and rotates synchronously. The first ring gear 201 and the swivel base 200 can be provided with a first retainer 211, which is used to enhance the stability of the connection between the first ring gear 201 and the swivel base 200.

[0069] As shown in FIG. 6, the second ring gear 301 provided by the embodiment of the present application can include a relatively fixed outer ring gear 311, an inner ring gear 321 and a second retainer 331. The outer ring gear 311 is fixedly connected with the inner ring gear 321 in the axial direction. The outer ring gear 311 can be provided with a radial protruding structure, and the inner ring gear 321 is provided with a hole matching the protruding structure on the outer ring gear 311. Through the matching protruding structure and the hole, the inner ring gear 321 and the outer ring gear 311 are fixedly connected and rotate synchronously. The second retainer 331 is arranged between the inner ring gear 321 and the outer ring gear 311, and is used to enhance the structural stability of the second ring gear 301.

[0070] As a possible implementation, the second input shaft 103 in the embodiment of the present application can be drivingly connected with the outer ring gear 311, specifically, the fourth gear part 324 can be engaged with the outer ring gear 311. The inner ring gear 321 can be drivingly connected with the catheter system driving assembly 300, specifically, the inner ring gear 321 can be engaged with the planetary gear 302. In actual application, as shown in FIG. 6, the catheter system driving assembly provided by the embodiment of the present application can further include a flexible transmission assembly 305. The planetary gear 302 can be connected with the catheter system driving assembly 300 through the flexible transmission assembly 305.

[0071] As shown in FIG. 6 and FIG. 7, the adapter provided by the embodiment of the present application further includes a cover 400. The cover 400 is arranged on the side of the second ring gear 301 away from the base 100; the cover 400 further includes a fixing screw 401, the cover 400 is provided with a first fixing hole, the base 100 is provided with a second fixing hole, and the adapter driving device corresponding to the adapter is provided with a screw hole, the fixing screw 401 is arranged through the first fixing hole, the second fixing hole and the screw hole to fix the adapter on the adapter driving device; the adapter driving device is used to drive the first input shaft and the second input shaft.

[0072] The screw hole of the adapter rotating device in the embodiment of the present application can be provided with a first thread. As shown in FIGS. 8 and 9, the shank of the fixing screw 401 is smooth near the first portion 411 of the nut, and the shank is provided with a second thread corresponding to the first thread away from the second portion 421 of the nut. In actual application, the outer diameter D1 of the first portion 411 of the shank is less than or equal to the minimum inner diameter D3 of the first fixed hole 402, the outer diameter D2 of the second portion 421 of the shank is greater than the minimum inner diameter D3 of the first fixed hole 402, and the length of the first portion 411 of the shank is greater than the axial length corresponding to the minimum inner diameter of the first fixed hole 402. The outer diameter D2 of the second portion 421 of the shank is less than or equal to the inner diameter of the second fixed hole. The first portion 411 of the shank can be directly clamped in the first fixed hole 402 when the adapter provided by the present application is shipped, and the fixing screw 401 cannot be removed from the first fixed hole 402 because the outer diameter D2 of the second portion 421 of the shank is greater than the minimum inner diameter D3 of the first fixed hole 402. Thus, the fixing screw provided by the embodiment of the present application reduces the packaging complexity, eliminates the risk of losing the fixing screw, and avoids the situation that the fixing screw is dropped during replacement or assembly of the fixing screw adapter, thereby improving the convenience of use.

[0073] As a possible implementation, as shown in FIG. 9, the first fixed hole 402 includes an axially connected first through hole 412 and a second through hole 422, and the first through hole 412 is arranged away from the second fixed hole. The inner diameter D3 of the first through hole 412 is equal to or greater than the outer diameter D1 of the first portion 411 of the shank, the inner diameter D3 of the first through hole 412 is less than the outer diameter D2 of the second portion 421 of the shank, and the inner diameter D4 of the second through hole 422 is greater than or equal to the outer diameter D2 of the second portion 421 of the shank. Thus, the first portion 411 of the shank can be directly clamped in the first through hole 412, and the fixing screw 401 cannot be removed from the first fixed hole 402 because the outer diameter D2 of the second portion 421 of the shank is greater than the inner diameter D3 of the first through hole 412. Thus, the fixing screw provided by the embodiment of the present application reduces the packaging complexity, eliminates the risk of losing the fixing screw, and avoids the situation that the fixing screw is dropped during replacement or assembly of the fixing screw adapter, thereby improving the convenience of use.

[0074] In summary, the adapter provided by the embodiment of the present application realizes two kinds of remote operations on the catheter system through two groups of relatively independent transmission assemblies, improves the working environment of medical staff and shortens the learning curve of doctors; the setting of the large-size middle through structure in the adapter increases the adaptability of the catheter system to the size difference of medical devices; and the design of the fixing screw avoids the secondary pollution of the fixing screw caused by the falling of the fixing screw from the adapter.

[0075] According to the adapter provided in the above embodiments, the application further provides a surgical auxiliary system. The surgical auxiliary system provided by the embodiments of the application comprises an adapter transmission device and the adapter as in the above embodiments. As shown in FIG. 10, the adapter transmission device is configured to drive the first input shaft 102 and the second input shaft 103 of the adapter respectively.

[0076] It should be noted that the surgical auxiliary system in the embodiments of the application can include various components of the above-mentioned embodiments of the adapter and achieve the same effects and functions, which will not be described here.

[0077] Although the illustrative embodiments of the application have been described in detail in the accompanying drawings and the foregoing description, they should be considered as illustrative rather than restrictive, and it should be understood that only certain exemplary embodiments are shown and described and that all changes and modifications that come within the spirit and scope of the claimed invention are desired to be protected. It should be understood that although the words such as preferred, preferably, preferred or more preferably are used in the above description, it can not be necessary and it can be conceived that the embodiments without these features are within the scope of the present application, which is defined by the appended claims. When reading the claims, when using words such as "one", "one", "at least one" or "at least one part", it is not intended to limit the claims to only one, unless there is a specific statement to the contrary in the claims. When the language "at least one part" and / or "a part" is used, the item can include a part and / or the whole item, unless there is a specific statement to the contrary.

[0078] Although the spirit and principles of the application have been described above with reference to several specific embodiments, it should be understood that the application is not limited to the disclosed specific embodiments, and the division of aspects does not mean that the features in these aspects cannot be combined. The application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended claims.

Claims

1. An adapter, characterized in that, The adapter comprises: a base comprising a support, a first input shaft and a second input shaft; a swivel base and a swivel base transmission assembly, the swivel base transmission assembly comprising a first ring gear, the swivel base being rotatably arranged on the support, the first input shaft being in transmission connection with the first ring gear, the first ring gear being fixed relative to the swivel base; a catheter system driving assembly arranged on the swivel base and a catheter system transmission assembly, the catheter system transmission assembly comprising a second ring gear and a planetary gear, the second input shaft being in transmission connection with the second ring gear, the second ring gear being in transmission connection with the planetary gear, the shaft of the planetary gear being fixed on the swivel base, the planetary gear being used to drive the catheter system driving assembly.

2. The adapter of claim 1, wherein, The first ring gear and the second ring gear are arranged on opposite sides of the support. The first ring gear and the second ring gear are independent of each other.

3. The adapter of claim 1, wherein, The swivel base transmission assembly further comprises a first power input gear and a first transmission gear, the first transmission gear comprising a first gear portion and a second gear portion fixedly connected; The first input shaft is sleeved with the first power input gear, the first power input gear is in meshing connection with the first gear portion, and the second gear portion is in meshing connection with the first ring gear.

4. The adapter of claim 3, wherein, The first gear portion is connected to the second gear portion through a first gear shaft, the first gear shaft passes through the support, and the first gear portion and the second gear portion are arranged on opposite sides of the support.

5. The adapter of claim 1, wherein, The second ring gear comprises a relatively fixed outer ring gear and an inner ring gear, the second input shaft is in transmission connection with the outer ring gear, and the inner ring gear is in meshing connection with the planetary gear.

6. The adapter of claim 5, wherein, The catheter system transmission assembly further comprises a flexible transmission assembly; The planetary gear is connected to the catheter system driving assembly through the flexible transmission assembly.

7. The adapter of claim 5, wherein, The catheter system transmission assembly further comprises a second power input gear and a second transmission gear, the second transmission gear comprising a third gear portion and a fourth gear portion fixedly connected; The second input shaft is sleeved with the second power input gear, the third gear portion is in meshing connection with the second power input gear, and the fourth gear portion is in meshing connection with the outer ring gear.

8. The adapter of claim 7, wherein, The third gear portion is connected to the fourth gear portion through a second gear shaft, The second gear shaft passes through the support, and the third gear portion and the fourth gear portion are arranged on the same side of the support.

9. The adapter of any one of claims 1-8, wherein, The catheter system comprises an outer catheter unit, a middle catheter unit and an inner catheter unit, the swivel base is used to mount the outer catheter unit, and the catheter system driving assembly is used to drive the knob of the outer catheter unit.

10. The adapter of claim 8, wherein, The support is provided with a first channel, the swivel base is provided with a second channel, and the first channel and the second channel constitute a middle passage structure of the adapter; The middle passage structure is used to accommodate the outer catheter unit.

11. The adapter of claim 1, wherein, The adapter further comprises a cover, the cover being arranged on the side of the second ring gear away from the base; The cover further comprises a fixing screw, the cover is provided with a first fixing hole, the support is provided with a second fixing hole, the adapter corresponding adapter transmission device is provided with a screw hole, the fixing screw is fixed on the adapter transmission device through the first fixing hole, the second fixing hole and the screw hole; The adapter transmission device is used for driving the first input shaft and the second input shaft.

12. The adapter of claim 11, wherein, The screw hole is provided with a first thread; The first part of the nail rod close to the first part of the nut is smooth, and the second part of the nail rod away from the nut is provided with a second thread corresponding to the first thread; The outer diameter of the first part of the nail rod is less than or equal to the minimum inner diameter of the first fixing hole, the outer diameter of the second part of the nail rod is greater than the minimum inner diameter of the first fixing hole, and the outer diameter of the second part of the nail rod is less than or equal to the inner diameter of the second fixing hole.

13. The adapter of claim 12, wherein, The first fixing hole comprises an axially connected first through hole and a second through hole, and the first through hole is arranged on the side away from the second fixing hole; The inner diameter of the first through hole is equal to or greater than the outer diameter of the first part of the nail rod, the inner diameter of the first through hole is less than the outer diameter of the second part of the nail rod, and the inner diameter of the second through hole is greater than or equal to the outer diameter of the second part of the nail rod.

14. A surgical assistance system, characterized by, The surgical auxiliary system comprises an adapter transmission device and the adapter according to any one of claims 1 to 13, and the adapter transmission device is used for driving the first input shaft and the second input shaft of the adapter respectively.

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