A 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 cavity inside, and a limiting component disposed in the mounting cavity of the mounting member; and a positioning component, including a sliding sleeve movably connected to the mounting member, the inner end face of the sliding sleeve facing the mounting member being provided with a release cavity; a positioning hole provided on the side wall of the mounting member, a positioning member being disposed in the positioning hole, the sliding sleeve pressing the positioning member into the positioning hole, and when the sliding sleeve displaces, the release cavity, the positioning hole and the mounting cavity are communicated with each other; a reset component disposed between the sliding sleeve and the mounting member. The present invention combines the locking mechanism and the working head assembly into a module, having 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 attachment) needs to be fixed at the operating end of the surgical instrument in a non-detachable manner such as welding to be installed and adapted to the surgical robot. Since the existing adapter device is a disposable design, the surgical instrument can only be used once and needs to be discarded after one surgical operation 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 cavity inside, and

[0008] a limiting component, which is arranged in the mounting cavity of the mounting member; and

[0009] a positioning component, including a sliding sleeve movably connected to the mounting member. The inner end face of the sliding sleeve facing the mounting member is provided with a release cavity, a positioning hole provided on the side wall of the mounting member, and a positioning member arranged in the positioning hole. The sliding sleeve presses the positioning member into the positioning hole, and when the sliding sleeve displaces, the release cavity, the positioning hole and the mounting cavity are communicated with each other;

[0010] a reset component, which is arranged between the sliding sleeve and the mounting member.

[0011] Further, one end of the mounting member is provided with a stop edge, a positioning block is arranged at a position on the mounting member close to the stop edge, a displacement area is arranged between the positioning block and the stop edge, and the sliding sleeve moves within the displacement area.

[0012] Further, the release cavity on the sliding sleeve faces the stop edge.

[0013] Further, at least one guiding groove is arranged on the positioning block, a guiding block is arranged on the sliding sleeve, and the guiding block is arranged in the guiding groove and slides therein.

[0014] Further, the diameter of the widest part of the cross-section of the positioning member is greater than the diameter of the mounting hole, so that a part of the positioning member is located in the mounting cavity.

[0015] Further, the reset assembly includes a reset cavity arranged on the positioning block, the end of the sliding sleeve is located in the reset cavity, a fixed ring platform is arranged on the inner wall of the sliding sleeve, and an elastic member is arranged between the reset cavity and the fixed ring platform.

[0016] Further, the reset cavity communicates with the guiding groove.

[0017] Further, the locking mechanism fixes the working head assembly inside it and is fixedly connected to the driving box. The working head assembly is provided with a limiting part cooperating with the limiting component and a positioning part cooperating with the positioning component. The driving box is provided with a driving hollow shaft for placing the locking mechanism and the working head assembly, and the locking mechanism and the driving hollow shaft are fixedly connected through a locking cap.

[0018] Further, the limiting part of the working head assembly is located at its tail, and the limiting part is an open groove.

[0019] Further, a convex block is arranged at the front end of the driving hollow shaft. When the locking mechanism is inserted into the connecting cylinder body, the convex block is inserted into the limiting groove.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The working head assembly of the present application is inserted into the mounting member. The depth of insertion of the working head assembly into the mounting member is controlled by the limiting component, and the working head assembly is fixed to the mounting member through the positioning component, so that the working head assembly and the locking mechanism are combined into a module. By simply rotating the locking cap, the module can be quickly disassembled or installed with the driving box;

[0022] 2. The limiting member of the present application is used to determine the depth of insertion 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 groove;

[0023] 3. The working head assembly of this application can be repeatedly disinfected and reused, avoiding waste of resources and reducing the surgical cost at the same time.

[0024] The above description is only an overview of the technical solution of the present invention. In order to understand the technical means of the present invention more clearly and be implemented in accordance with the content of the description, the following takes the preferred embodiment of the present invention and combines with the accompanying drawings to describe in detail as follows. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the locking mechanism of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0026] Figure 2 It is a front view of the locking mechanism of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0027] Figure 3 It is Figure 4 a cross-sectional view of;

[0028] Figure 4 It is a partial view of the locking mechanism of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0029] Figure 5 It is a schematic structural diagram of the sliding sleeve of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0030] Figure 6 It is a schematic structural diagram of the working head assembly of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0031] Figure 7 It is a cross-sectional view of the installation structure of the locking mechanism and the working head assembly;

[0032] Figure 8 It is a schematic structural diagram of the driving box of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0033] Figure 9 It is a schematic structural diagram of the locking adapter of a minimally invasive surgical instrument of the present invention;

[0034] Figure 10 It is a working state diagram of the locking adapter of a minimally invasive surgical instrument of the present invention. Detailed Description of the Preferred Embodiment

[0035] The following combines the accompanying drawings and embodiments to further describe in detail the specific embodiments of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0036] Please refer to Figure 9 、 Figure 10, the assembled minimally invasive surgical instrument of the present application is connected to the surgical robot, and the doctor manipulates the surgical robot to perform surgery on the patient. Since the working head assembly 20 and the locking mechanism 10 of the present application are assembled into a module and detachably arranged on the driving box 30, during the operation, the working head assembly 10 can be quickly installed on the driving box. At the end of the operation, the operator can quickly extract the working head assembly 20 and it can be repeatedly disinfected and used. At the same time, in actual use, different working head assemblies 20 can be replaced on the driving box 30 according to the surgical requirements.

[0037] A locking adapter for a minimally invasive surgical instrument, please refer to Figure 1 , Figure 2 , Figure 3 , including a locking mechanism 10. The locking mechanism 10 includes a mounting member 11 with a through mounting cavity inside. One end of the mounting member 11 is provided with a stop edge 15. A positioning block 16 is arranged at a position on the mounting member close to the stop edge. A displacement area is provided between the positioning block 16 and the stop edge 15.

[0038] A limiting component 12, which is arranged in the mounting cavity of the mounting member 11 and is used in cooperation with the tail of the working head assembly 20 to limit the depth of insertion of the working head assembly 20 into the mounting member 11 and to limit the insertion direction of the working head assembly 20, achieving the functions of guiding and limiting during the assembly process; and,

[0039] A positioning component 13, including a sliding sleeve 131 movably connected to the mounting member 11. The sliding sleeve 131 moves within the displacement area. A release cavity 132 is provided on the inner end face of the sliding sleeve 131 facing the mounting member 11. A positioning hole 133 is provided on the side wall of the mounting member 11. A positioning member 134 is arranged in the positioning hole 133. The sliding sleeve presses the positioning member into the positioning hole. When the sliding sleeve 131 displaces, the release cavity 132, the positioning hole 133 and the mounting cavity are connected to each other, so as to fixedly install the working head assembly 20 and the mounting member 11, and the working component 20 and the locking mechanism 10 are used as a module.

[0040] A reset component 14 is arranged between the sliding sleeve 131 and the mounting member 11 to ensure that the positioning member 134 always cooperates with the working head assembly 20, so as to ensure that the working head assembly 20 will not have an accident during the operation of the surgical instrument.

[0041] In the specific implementation of the present application, the limiting component 12 includes at least one limiting hole 121 arranged on the side wall of the mounting member 11, and a limiting member 122 is installed in the limiting hole 121.

[0042] Further, there are two limiting holes 121, symmetrically arranged on the side wall of the mounting member 11. A limiting member 122 is installed in each limiting hole 121, and the length of the limiting member 122 does not exceed the radius of the mounting cavity of the mounting member.

[0043] Preferably, the limiting member 122 is selected as a pin shaft. The limiting member 122 of the present application can also be selected as a member in the shape of a column, a block, a strip, etc., and the ways of arranging it in the limiting hole 121 are all within the protection scope of the present application.

[0044] In specific implementation, the limiting holes 121 of the present application are symmetrically arranged on the side wall of the mounting member 11, and the limiting member 122 is installed into the mounting cavity inward through the limiting hole 121. More specifically, the length of the limiting member 122 does not exceed the radius dimension of the mounting member 11. In specific implementation, the limiting hole 121 can also be cancelled, and the limiting member 122 can be directly fixed on the inner wall of the mounting member 11. The structures that limit the insertion depth of the working head assembly 20 by using the limiting member 122 and play a guiding role are all within the protection scope of the present application.

[0045] Further, please refer to Figure 6 、 Figure 7 , a card slot 21 cooperating with the limiting member 122 is arranged at the tail of the working head assembly 20.

[0046] In specific implementation, the card slot 21 at the tail of the working head assembly 20 of the present application is a U-shaped open slot.

[0047] In the specific implementation of the present application, the tail of the working head assembly 20 is inserted into the mounting cavity of the mounting member; before the operation is implemented, the working head assembly 20 is inserted into the mounting cavity from the insertion end of the mounting member 11, and the sliding sleeve 131 moves backward in the displacement area to press against the reset assembly 14, so that when the sliding sleeve 131 displaces, the release cavity 132, the positioning hole 133 and the mounting cavity are connected. When the working head assembly 20 is inserted, the positioning member 134 is pushed into the release cavity to enable it to be smoothly inserted into the mounting cavity. The card slot 21 at the tail of the working head assembly 20 abuts against the limiting member 122, limiting the insertion depth and installation angle of the working head assembly 20, and playing a guiding role at the same time. At this time, the sliding sleeve 131 is released, and the reset assembly 14 pushes the sliding sleeve 131 away until it is fixed by the stop edge 15. The inner wall of the sliding sleeve 131 presses the positioning member 134 into the positioning hole 133 to fix the working head assembly.

[0048] Preferably, the diameter of the widest part of the cross section of the positioning member 134 is greater than the diameter of the positioning hole 133, so that a part of the positioning member 134 is located in the mounting cavity.

[0049] More preferably, the positioning member 134 is selected as a ball.

[0050] In specific implementation, the implementation method of the positioning component 13 is not limited to the assembly method of installing a ball at the positioning hole 133. The positioning member 134 can also be a wedge block or the like. The method of being set on the mounting member 11 and tightening and fixing the working head assembly 20 is within the scope of protection of this application.

[0051] Furthermore, at least one guide groove 161 is provided on the positioning block 16 , and a guide block 1311 is provided on the sliding sleeve 131 . The guide block 1311 is disposed in the guide groove 161 and slides therein.

[0052] Further, see Figure 4 、 Figure 5 The reset assembly 14 includes a reset cavity 141 arranged on the positioning block 16, the end of the sliding sleeve 131 is located in the reset cavity 141, a fixed ring platform 1312 is provided on the inner wall of the sliding sleeve 131, and an elastic member 142 is provided between the reset cavity 141 and the fixed ring platform 1312.

[0053] Preferably, the reset cavity is communicated with the guide groove.

[0054] Preferably, a displacement distance is provided between the edge of the sliding sleeve 131 and the bottom of the reset cavity 141 .

[0055] Further, see Figure 6 A groove 22 that cooperates with the positioning member 134 is provided on the side wall of the working head assembly 20.

[0056] For specific implementation, please refer to Figure 7 The working head assembly 20 is inserted into the mounting member 11. When the slot at the tail of the working head assembly 20 and the limiting member 122 are installed in place, the positioning member 134 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.

[0057] The present application provides a locking adapter for a minimally invasive surgical instrument. During specific implementation, when the working head assembly 20 of the present application is inserted into the mounting cavity of the locking mechanism 10, the card slot 21 at the tail of the working head assembly 20 is supported by the limiting member 122, and while determining the insertion depth of the working head assembly 20, the positioning member 134 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 withdrawn together.

[0058] The working head assembly of the present application can be sterilized and reused repeatedly, thus avoiding waste of resources and reducing surgical costs.

[0059] Further, please refer to Figure 8 , Figure 9 , Figure 10 . A driving hollow shaft 31 for inserting the mounting member 11 is provided at the front end of the driving box 30. A convex block 32 for inserting into the guiding groove is provided at the front end of the driving hollow shaft 3, and the driving hollow shaft 31 is connected to the fastening member 33 by external threads.

[0060] Preferably, the mounting member 11, the working head assembly 20 and the driving hollow shaft 31 are coaxially arranged.

[0061] More preferably, the inner wall of the fastening member 33 is stepped for abutting against the mounting member 11.

[0062] The specific implementation method of this application is as follows:

[0063] Insert the working head assembly into the mounting member. First, the sliding sleeve moves backward in the displacement area and presses against the reset assembly. When the sliding sleeve is displaced, the release cavity, the positioning hole and the mounting cavity are connected. When the working head assembly is inserted, the positioning member is pushed into the release cavity so that it can be smoothly inserted into the mounting cavity. The card slot at the tail of the working head assembly abuts against the limiting member, which limits the insertion depth and installation angle of the working head assembly and plays a guiding role at the same time. At this time, release the sliding sleeve, and the reset assembly pushes the sliding sleeve away until it is fixed by the stop edge. The inner wall of the sliding sleeve presses the positioning member into the positioning hole to fix the working head assembly, so that the working head assembly and the locking mechanism form a module for use. Then, the fastening member is sleeved outside the module, and then the module is inserted 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 stop edge of the mounting member to prevent the phenomenon that the mounting member idles in the driving hollow shaft. Finally, the fastening member is connected to the driving hollow shaft by external threads to ensure that the driving box drives the working head assembly to work. After the surgical operation is completed, release the fastening member, pull out the module, and then displace the sliding sleeve backward so that when the sliding sleeve is displaced, the release cavity, the positioning hole and the mounting cavity are connected. When the working head assembly is pulled out, the positioning member is pushed into the release cavity so that the working head assembly can be smoothly pulled out. The working head assembly can be repeatedly disinfected and used, avoiding waste of resources and reducing the surgical cost at the same time.

[0064] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of 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.

[0065] The above-described embodiments merely represent several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed 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 modifications and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A locking adapter for a minimally invasive surgical instrument, characterized in that, Comprising a locking mechanism, the locking mechanism includes a mounting member having a through mounting cavity therein, and, a limiting assembly, the limiting assembly being disposed in the mounting cavity of the mounting member; and, a positioning assembly, including a sliding sleeve movably connected to the mounting member, the sliding sleeve having a release cavity on its inner end face facing the mounting member, a positioning hole provided on the side wall of the mounting member, a positioning member provided in the positioning hole, the sliding sleeve pressing the positioning member into the positioning hole, and the release cavity, the positioning hole and the mounting cavity being communicated with each other when the sliding sleeve is displaced; a reset assembly, disposed between the sliding sleeve and the mounting member; the limiting assembly 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; one end of the mounting member is provided with a stop edge, a positioning block is provided on the mounting member near the stop edge, a displacement area is provided between the positioning block and the stop edge, and the sliding sleeve moves within the displacement area; the reset assembly includes a reset cavity provided on the positioning block, the end of the sliding sleeve is located in the reset cavity, a fixed ring platform is provided on the inner wall of the sliding sleeve, and an elastic member is provided between the reset cavity and the fixed ring platform; the locking mechanism fixes the working head assembly inside it and is fixedly connected to the drive box, the working head assembly is provided with a limiting portion cooperating with the limiting assembly and a positioning portion cooperating with the positioning assembly, the drive box is provided with a drive hollow shaft for placing the locking mechanism and the working head assembly, and the locking mechanism and the drive hollow shaft are fixedly connected by fasteners.

2. The locking adapter of a minimally invasive surgical instrument according to claim 1, characterized in that, The release cavity on the sliding sleeve faces the stop edge.

3. The locking adapter of a minimally invasive surgical instrument according to claim 2, characterized in that, At least one guiding groove is provided on the positioning block, a guiding block is provided on the sliding sleeve, and the guiding block is disposed in the guiding groove and slides therein.

4. The locking adapter of a minimally invasive surgical instrument according to claim 1, characterized in that, The diameter of the widest part of the cross section of the positioning member is greater than the diameter of the positioning hole, so that a part of the positioning member is located in the mounting cavity.

5. The locking adapter of a minimally invasive surgical instrument according to claim 3, characterized in that, The reset cavity communicates with the guiding groove.

6. The locking adapter of a minimally invasive surgical instrument according to claim 1, characterized in that, The limiting portion of the working head assembly is located at its tail, and the limiting portion is an open slot.

7. The locking adapter of a minimally invasive surgical instrument according to claim 1, characterized in that, A convex block is provided at the front end of the drive hollow shaft, and when the locking mechanism is inserted into the drive hollow shaft, the convex block is inserted into the notch of the stop edge of the mounting member.

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