Locking Adapter for a Minimally Invasive Surgical Instrument

Abstract

A locking adapter for a minimally invasive surgical instrument, comprising a locking mechanism. The locking mechanism includes a mounting member with a through mounting channel inside, and a deformation part. The deformation part is arranged at the mounting end of the mounting member, and the deformation part expands or contracts along the direction of the acting force. And a limiting component is arranged at the outlet end of the mounting member, and at least a part of the limiting component is arranged in the through mounting channel of the mounting member or outside the mounting member. In the present invention, the locking mechanism and the working head assembly are combined into a module, which has the function of quick installation or disassembly.

Description

Technical Field

[0001] The present invention relates to the field of surgical instruments, and in particular to a locking adapter for minimally invasive surgical instruments. Background Art

[0002] A surgical robot is a comprehensive medical surgical system integrating multiple modern high-tech means, which can be applied to various surgical operations such as general surgery, thoracic surgery, urology, gynecology and obstetrics, head and neck surgery, and cardiac surgery. By using minimally invasive methods, surgeons can manipulate the robot away from the operating table to perform complex surgical operations.

[0003] Traditional surgical instruments are manually held and operated by doctors for performing surgical operations. If a surgical robot is used to operate the surgical instruments, the surgical instruments need to be installed on the surgical robot through a necessary adapter device.

[0004] Currently, for two-degree-of-freedom minimally invasive surgical instruments, an adapter device (as shown in the attached figure) needs to be fixed at the operating end of the surgical instrument in a non-removable manner such as welding, so as to be installed and adapted to the surgical robot. Since the existing adapter device is a one-time design, the surgical instrument can only be used once and needs to be discarded after a surgical operation is completed by using the surgical robot, resulting in waste of surgical instruments and high surgical costs. Therefore, it is necessary to invent a detachable adapter device so that the surgical instrument can be repeatedly disinfected and used, thereby effectively avoiding waste and reducing surgical costs. Figure 5 Summary of the Invention

[0005] The purpose of the present invention is to provide a locking adapter for minimally invasive surgical instruments to solve the above technical problems.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A locking adapter for minimally invasive surgical instruments includes a locking mechanism. The locking mechanism includes a mounting member with a through mounting channel inside, and

[0008] a deformation part, the deformation part is arranged at the mounting end of the mounting member, and the deformation part expands or contracts along the force application direction; and

[0009] a limiting component, the limiting component is arranged at the outlet end of the mounting member, and at least a part of the limiting component is arranged inside the through mounting channel of the mounting member or outside the mounting member.

[0010] Further, the deformation part includes a plurality of opening grooves arranged on the side wall of the mounting member, and the side wall of the mounting member between the plurality of opening grooves is divided into a plurality of deformation arms.

[0011] Further, the limiting component includes at least one limiting hole provided on the side wall of the mounting member, and a limiting member is installed in the limiting hole.

[0012] Further, the limiting member is a pin shaft.

[0013] Further, at least one of the deformable arms is provided with a pressing component protruding inwardly towards the inner wall.

[0014] Further, at least one end of the deformable arm is provided with a flange extending outwardly, and at least one of the flanges is provided with a notch.

[0015] Further, the locking mechanism fixes the working head assembly inside it and is fixedly connected to the drive box.

[0016] Further, a card slot cooperating with the limiting member is provided at the tail end of the working head assembly, and a groove corresponding to the pressing component is provided on the outer side wall of the working head assembly.

[0017] Further, a drive hollow shaft for inserting into the mounting member is provided at the front end of the drive box, a convex block for inserting into the notch is provided at the front end of the drive hollow shaft, and the drive hollow shaft is connected to a fastener through an external thread.

[0018] Further, the inner wall of the fastener is stepped.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The mounting member of the present application is provided with a deformable part. When the deformable part is stressed, the deformable arm can expand outward or contract inward along the stress direction, and can adapt to various specifications of surgical instruments;

[0021] 2. The limiting member of the present application is used to determine the insertion depth of the working head assembly into the mounting member, and also ensures the installation direction of the working head assembly, ensuring the assembly of the limiting component and the card slot;

[0022] 3. The retaining ring on the inner wall of the fastener of the present application is used to fix the mounting member in the drive hollow shaft. After the fastener is threadedly connected to the drive hollow shaft, the working head assembly is fixedly connected to the drive box, and the drive box then drives the working head assembly to work;

[0023] 4. Through the assembly of the limiting component and the positioning component with the working head assembly, the locking mechanism and the working head assembly are combined into a module. When disassembling, unscrew the fastener and pull out the locking mechanism and the working head assembly together;

[0024] 5. The working head assembly of the present application can be repeatedly sterilized and used, avoiding waste of resources and reducing the surgical cost at the same time.

[0025] The above description is only an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and implement it according to the content of the specification, the following describes in detail with reference to the preferred embodiments of the present invention and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural view of the locking mechanism of the present invention;

[0027] Figure 2 is a rear view of the locking mechanism of the present invention;

[0028] Figure 3 is a schematic structural view of the working head assembly of the present invention;

[0029] Figure 4 is a schematic structural view of the working head assembly and the locking mechanism of the present invention;

[0030] Figure 5 is a schematic structural view of the drive box of the present invention;

[0031] Figure 6 is a schematic structural view of a locking adapter of a minimally invasive surgical instrument of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] The following further describes in detail the specific embodiments of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0033] The minimally invasive surgical instrument of the present application is assembled and connected to the surgical robot, and the doctor manipulates the surgical robot to perform a surgical operation on the patient. Since the working head assembly of the present application is detachably arranged on the drive box, the working head assembly can be quickly installed on the drive box during the operation. At the end of the operation, the operator can quickly take out the working head assembly and can be repeatedly disinfected and used. At the same time, in actual use, different working head assemblies can be replaced on the drive box according to the surgical requirements.

[0034] Please refer to Figure 1 、 Figure 2 , a locking adapter 100 of a minimally invasive surgical instrument of the present application includes a locking mechanism 10. The locking mechanism 10 includes a mounting member 11 with a through mounting channel inside. A deformation portion 12 is provided at the mounting end of the mounting member 11, and the deformation portion 12 expands or contracts along the direction of force. The locking mechanism 10 further includes a limiting component 13. The limiting component 13 is arranged at the outlet end of the mounting member 11, and at least a part of the limiting component 13 is arranged in the through mounting channel of the mounting member 11.

[0035] In the specific implementation of the present application, the mounting member 11 is a cylinder and is made of a material with a certain resilience. Preferably, the mounting member 11 has a certain thickness.

[0036] Please refer to Figure 4 , in the first specific embodiment of the present application, a locking adapter 100 of a minimally invasive surgical instrument further includes a working head assembly 20. When the working head assembly 20 is inserted into the deformed portion 12 of the mounting member 11, an outward expansion force is applied to the deformed portion 12, which can make the mounting member 11 better inserted into the working head assembly 20. The tail of the working head assembly 20 cooperates with the limiting component 13 for positioning, so that the mounting member 11 and the working head assembly 20 are combined into a module.

[0037] In the specific implementation, another second embodiment is that when the working head assembly 20 is sleeved outside the mounting member 11, an inward pressure is applied to the deformed portion of the mounting member, and the deformed portion of the mounting member contracts inward along the inward pressure.

[0038] The specific operation of the above-mentioned first embodiment is as follows: Before the operation is implemented, the working head assembly 20 is inserted into the installation channel from the insertion end of the mounting member. The deformed portion of the mounting member 11 expands radially outward, so that the mounting member 11 can better accommodate the working head assembly 20, facilitating the insertion of the working head assembly 20 into the mounting member 11 without damaging the mounting member 11, and can also cooperate with working head assemblies 20 of different specifications and sizes; the insertion end of its working head assembly 20 is used in cooperation with the limiting component 13 to limit the insertion depth and installation angle of the working head assembly 13, playing a guiding role.

[0039] Further, the deformed portion 12 includes a plurality of opening grooves 16 provided on the side wall of the mounting member 11, and the side wall of the mounting member 11 between the plurality of opening grooves 16 is divided into a plurality of deformed arms 14.

[0040] In the specific implementation of the present application, there is a certain gap in the opening groove 16 between the deformed arms 14, which further increases the deformation amount of the deformed arms 14. Moreover, since the mounting member 11 is first made of a material with resilience, it can meet the requirement of the repeated insertion of the working head assembly 20 and can also meet the use requirements of working head assemblies 20 of different sizes according to the use requirements.

[0041] Further, the limiting component 13 includes at least one limiting hole 131 provided on the side wall of the mounting member 11, and a limiting member 132 is installed in the limiting hole 131.

[0042] Preferably, the limiting member 132 is selected as a pin shaft. The limiting member 132 of the present application can also be a member in the shape of a column, a block, a strip, etc., and the ways of being arranged in the limiting hole 131 are all within the protection scope of the present application.

[0043] In specific implementation, the limiting holes of the present application are symmetrically arranged on the side wall of the mounting member, and the limiting member is installed inward through the limiting hole into the installation channel. More specifically, the length portion of the limiting member exceeds the radius size of the mounting member. In specific implementation, the limiting hole 131 can also be cancelled, and the limiting member 132 can be directly fixedly arranged on the inner wall of the mounting member 11. The structure that limits the insertion depth of the working head assembly 20 by using the limiting member 132 and plays a guiding role is all within the protection scope of the present application.

[0044] Further, please refer to Figure 3 , a clamping groove 21 cooperating with the limiting member 132 is arranged at the tail of the working head assembly 20.

[0045] In specific implementation, the clamping groove 21 at the tail of the working head assembly 20 of the present application is a U-shaped open groove.

[0046] Further, please refer to Figure 1 , at least one of the deformation arms 14 is provided with a pressing component 15 protruding inwardly towards the inner wall.

[0047] Preferably, the pressing component 15 includes a pressing installation hole 151 arranged on the deformation arm 14, a pressing member 152 is press-fitted in the pressing installation hole 151, and the pressing end of the pressing member 152 is located in the installation channel of the mounting member 11.

[0048] More preferably, the pressing member 152 is selected as a ball.

[0049] In specific implementation, the implementation manner of the pressing component 15 is not limited to the component manner of press-fitting the pressing member 152 at the pressing installation hole 151, and the pressing member 152 can also be fixedly arranged on the inner wall of the deformation arm 14 and face the installation channel. The end of the pressing member 152 is semicircular. The ways of being arranged on the mounting member 11 and pressing and fixing the working head assembly 20 are all within the protection scope of the present application.

[0050] Further, please refer to Figure 3 , a groove 22 cooperating with the pressing member 152 is arranged on the side wall of the working head assembly 20.

[0051] During specific implementation, when the working head assembly 20 is inserted into the deformed portion of the mounting member 11, when the slot at the tail of the working head assembly 20 and the limiting member 132 are installed in place, the tightening member 152 falls into the groove 22 of the working head assembly 20, ensuring that the working head assembly 20 will not fall off from the mounting member 11.

[0052] This application is a locking adapter for a minimally invasive surgical instrument, see Figure 5 In a specific implementation, when the working head assembly 20 of the present application is inserted into the installation channel of the locking mechanism 10, the card slot 21 at the tail of the working head assembly 20 is supported by the limit member 132 to determine the insertion depth of the working head assembly 20. At the same time, the pressing member 152 on the deformable arm 14 cooperates with the groove 22 to lock and fix the working head assembly 20, so that the working head assembly 20 and the locking mechanism 10 are combined into a module for use, and the drive box 30 can be inserted or pulled out together.

[0053] The working head assembly of the present application can be sterilized and reused repeatedly, thus avoiding waste of resources and reducing surgical costs.

[0054] For specific implementation, please refer to Figure 1 , Figure 2 At least one end of the deformable arm 14 is provided with a rib 141 extending outward, and at least one of the ribs 141 is provided with a notch 142 .

[0055] For further information, see Figure 6 The front end of the driving box 30 is provided with a driving hollow shaft 31 for inserting the mounting member 11, and the front end of the driving hollow shaft 31 is provided with a protrusion 32 for inserting the notch 142, and the driving hollow shaft 31 is connected to the fastener 33 through an external thread.

[0056] Preferably, the mounting member 11 , the working head assembly 20 and the driving hollow shaft 31 are coaxially arranged.

[0057] More preferably, the inner wall of the fastener 33 is stepped to resist the mounting member 11 .

[0058] The specific implementation method of this application is:

[0059] First, insert the working head assembly into the mounting part. When the U-shaped groove at the insertion end of the working head assembly is stuck and fixed with the limiting part, the pressing part on the deformation arm falls into the groove on the side wall of the working head assembly to clamp and fix the working head assembly, so that the working head assembly and the locking mechanism module are used together. Then, sleeved the fastener outside the module, and then insert the module into the driving hollow shaft of the driving box. The convex block at the front end of the driving hollow shaft is inserted into the notch on the retaining edge of the mounting part to prevent the phenomenon that the mounting part idles in the driving hollow shaft. Finally, connect the fastener to the driving hollow shaft through the external thread to ensure that the driving box drives the working head assembly to work.

[0060] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0061] The above embodiments only represent several implementation manners of the present invention. The description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the invention patent should be subject to the appended claims.

Claims

1. A locking adapter for a minimally invasive surgical instrument, characterized in that, It includes a locking mechanism, and the locking mechanism includes a mounting member with a through mounting channel inside, and, a deformation part, which is arranged at the mounting end of the mounting member, and the deformation part expands or contracts along the force application direction; and, a limiting component, which is arranged at the outlet end of the mounting member, and at least a part of it is arranged inside the through mounting channel of the mounting member or outside the mounting member; the deformation part includes a plurality of opening grooves arranged on the side wall of the mounting member, and the side wall of the mounting member between the plurality of opening grooves is divided into a plurality of deformation arms; the limiting component includes at least one limiting hole arranged on the side wall of the mounting member, and a limiting member is installed in the limiting hole; the limiting member is a pin shaft; at least one of the deformation arms is provided with a pressing component protruding inwardly towards the inner wall; at least one end of the deformation arm is provided with a flange extending outwardly, and at least one of the flanges is provided with a notch; the locking mechanism fixes the working head assembly inside it and is fixedly connected to the drive box; the tail end of the working head assembly is provided with a clamping groove cooperating with the limiting member, and the outer side wall of the working head assembly is provided with a groove corresponding to the pressing component; the front end of the drive box is provided with a drive hollow shaft for inserting into the mounting member, and the front end of the drive hollow shaft is provided with a convex block for inserting into the notch, and the drive hollow shaft is connected to the fastener through an external thread.

2. The locking adapter of a minimally invasive surgical instrument according to claim 1, characterized in that, The inner wall of the fastener is stepped.

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