Working sleeve

Abstract

The working cannula (1) is a split cannula and is divided into a first cannula body (2) and a second cannula body (3) in the radial direction of the working cannula (1), the working cannula (1) is used for being inserted into a surgical site, and the second cannula body (3) is used for being inserted into the surgical site before a fusion cage is placed through the working cannula (1) inserted into the surgical site. The second tube body (3) inserted into the surgical site is drawn out in the axial direction, and therefore in the spine endoscope minimally invasive surgery, the adverse effect of the working sleeve on the surgical site when the fusion cage is placed can be reduced.

Description

Technical Field

[0001] The present specification relates to the technical field of medical devices, and in particular to a working cannula. Background Art

[0002] In current minimally invasive spinal endoscopic surgeries, a working cannula inserted into the surgical site to provide working space for other surgical instruments is essential. In some minimally invasive spinal endoscopic surgeries that require bone grafting and fusion, in order to place the fusion device into the surgical site through the working cannula, a large-sized working cannula or an expandable and deformable working cannula that matches the fusion device is usually required. However, no matter which of the above working cannula is used, it will cause an impact on the surgical site that exceeds that of a conventional working cannula, increasing the probability of accidental damage to the surrounding tissues of the surgical site.

[0003] Therefore, the present invention provides a working sleeve. Utility Model Content

[0004] The embodiments of the present specification provide a working sleeve to at least partially solve the above-mentioned problems existing in the prior art.

[0005] The embodiments of this specification adopt the following technical solutions:

[0006] This specification provides a working sleeve, wherein the working sleeve 1 is a split sleeve, which is divided into a first tube body 2 and a second tube body 3 along the radial direction of the working sleeve 1;

[0007] The working cannula 1 is used for inserting into the surgical site;

[0008] The second tubular body 3 is used to axially withdraw the second tubular body 3 inserted into the surgical site before placing a fusion device through the working sleeve 1 inserted into the surgical site.

[0009] Optionally, the first tube body 2 and the second tube body 3 have a connecting portion 4 .

[0010] Optionally, the combining portion 4 includes a protruding structure 401 disposed on the first tube body 2 , and a groove structure 402 disposed on the second tube body 3 and matching the shape of the protruding structure 401 .

[0011] Optionally, the protruding structure 401 is located at the insertion end of the first tube body 2 .

[0012] Optionally, the protruding structure 401 is a hook-shaped structure extending toward the holding end of the second tube body 3 .

[0013] Optionally, the holding ends of the first tube body 2 and the second tube body 3 are both provided with a buckle structure 5;

[0014] The buckle structure 5 is used to connect with a robot so as to perform surgery via the robot.

[0015] Optionally, the buckle structure 5 includes a hole 6 and an elastic component 7 provided on the working sleeve 1 , and the elastic component 7 can protrude from the surface of the working sleeve 1 through the hole 6 .

[0016] Optionally, the elastic component 7 includes a spring 701 disposed inside the holding end of the working sleeve 1 and a buckle 702 and a button 703 abutting against the spring;

[0017] In the absence of external force, the buckle 702 and the button 703 protrude from the working sleeve 1 through the hole 6 under the action of the spring 701, and the buckle 702 is used to be engaged with the robot;

[0018] The button 703 is used to drive the buckle 702 to retract into the working sleeve 1 when subjected to external force.

[0019] Optionally, the hole 6 is provided on a baffle 8 on the surface of the working sleeve 1 , and the baffle 8 is fixed to the holding end of the working sleeve 1 by means of screws 801 .

[0020] Optionally, the insertion end of the first tube body 2 is provided with a tongue-shaped structure 9 extending in the axial direction.

[0021] At least one of the above technical solutions adopted in this specification can achieve the following beneficial effects:

[0022] The present specification provides a working sleeve, wherein the working sleeve 1 is a split sleeve, which is divided into a first tube body 2 and a second tube body 3 along the radial direction of the working sleeve 1. The working sleeve 1 is used to be inserted into a surgical site, and the second tube body 3 is used to axially withdraw the second tube body 3 inserted into the surgical site before placing a fusion device through the working sleeve 1 inserted into the surgical site. Therefore, in minimally invasive spinal endoscopic surgery, the adverse effects of the working sleeve on the surgical site when placing a fusion device can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of this specification and constitute a part of this specification. The illustrative embodiments and descriptions of this specification are used to explain this specification and do not constitute an improper limitation on this specification. In the drawings:

[0024] Figure 1 A schematic diagram of the structure of a working casing provided in this specification;

[0025] Figure 2 A schematic diagram of the disassembly structure of a working casing provided in this specification;

[0026] Figure 3 A cross-sectional view of the buckle structure of a working sleeve provided in this specification. DETAILED DESCRIPTION

[0027] Exemplary embodiments are described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with this specification. Instead, they are merely examples of devices and methods consistent with some aspects of this specification as detailed in the appended claims.

[0028] The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this specification. The singular forms "a", "the" and "the" used in this specification and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0029] It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this specification, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0030] The surgical tool of this specification is described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0031] Figure 1 This is a schematic diagram of the structure of a working casing provided in this specification, such as Figure 1 As shown, the present specification provides a working sleeve, wherein the working sleeve 1 is a split sleeve, which is divided into a first tube body 2 and a second tube body 3 along the radial direction of the working sleeve 1. The working sleeve 1 is used to be inserted into a surgical site, and the second tube body 3 is used to axially withdraw the second tube body 3 inserted into the surgical site before placing a fusion device through the working sleeve 1 inserted into the surgical site.

[0032] During surgery, the working sleeve 1 composed of the first tube body 2 and the second tube body 3 is inserted into the surgical site, and surgical instruments are placed through the internal channel of the working sleeve 1 to perform minimally invasive surgery. When the fusion device needs to be placed during the surgical stage, the second tube body 3 is axially withdrawn from the surgical site and separated from the first tube body 2, so that the first tube body 2 retained at the surgical site forms a semi-tubular channel at the surgical site, and the fusion device is placed into the surgical site through the semi-tubular channel. As a result, the size of the fusion device that can be placed is not limited by the diameter of the internal channel of the working sleeve 1, and the working sleeve 1 does not need to be expanded at the surgical site. At the same time, the retained first tube body 2 can also protect the important tissues on the side of the surgical site close to the nerve from being scratched by the surgical instruments through the tube wall of the first tube body 2.

[0033] In one or more embodiments of the present specification, the first tube body 2 and the second tube body 3 have a joint portion 4. The joint portion 4 ensures that the first tube body 2 and the second tube body 3 are tightly connected during surgery.

[0034] Specifically, Figure 2 As shown, Figure 2 This is a schematic diagram of the disassembled structure of the working sleeve provided in this specification, wherein the joint portion 4 includes a protruding structure 401 provided on the first tube body 2, and a groove structure 402 provided on the second tube body 3 and matching the shape of the protruding structure 401. The second tube body 3 and the first tube body 2 separated from each other are assembled along the axis to obtain a complete working sleeve 1 with sealed internal channels.

[0035] Furthermore, the protruding structure 401 is located at the insertion end of the first tube body 2, and the groove structure matched therewith is also located at the insertion end of the second tube body 3. The protruding structure 401 is a hook-shaped structure extending toward the gripping end of the second tube body 3. Therefore, when the first tube body 2 and the second tube body 3 are connected to form the working sleeve 1, it is possible to ensure that the first tube body 2 and the second tube body 3 are tightly connected without other structures, and the internal channel of the working sleeve 1 will not be deformed due to the influence of radial external forces.

[0036] In addition, if Figure 3 As shown, Figure 3 This is a cross-sectional view of the buckle structure of the working sleeve provided in this specification. The holding ends of the first tube body 2 and the second tube body 3 are both provided with a buckle structure 5, and the buckle structure 5 is used to connect with a robot so as to perform surgery through the robot.

[0037] In one or more embodiments of the present specification, the buckle structure 5 includes a hole 6 and an elastic component 7 provided in the working sleeve 1, and the elastic component 7 can protrude from the surface of the working sleeve 1 through the hole 6. Figure 1As shown, the hole 6 is located at the holding end of the first tube body 2 and the second tube body 3. The spacing and size of the holes in the first tube body and the second tube body can be set according to the robot to be connected to the working sleeve, and this specification does not limit it. Figure 3 As shown, it is arranged in the holding end of the first tube body 2 and the second tube body 3, and a part thereof can protrude from the surface of the working sleeve 1 through the hole 6, so as to form a stable connection with a clamping structure of a matching shape on the robot.

[0038] Specifically, the elastic component 7 includes a spring 701 disposed inside the holding end of the working sleeve 1, and a buckle 702 and a button 703 abutting against the spring 701. In the absence of external force, the buckle 702 and the button 703 protrude out of the working sleeve 1 through the hole 6 under the action of the spring 701. The buckle 702 is used to engage with the robot, and the button 703 is used to drive the buckle 702 to retract into the working sleeve 1 when subjected to external force.

[0039] like Figure 3 As shown, the buckle 702 and the button 703 are connected inside the buckle structure. In the absence of external force, due to the elastic force of the spring 701, the buckle 702 and the button 703 protrude from the working sleeve 1 through the hole 6. When the button 703 is pressed, the button 703 compresses the spring 701 and drives the buckle 702 to retract into the holding end of the working sleeve 1 through the hole 6. When the buckle structure is contracted, the elastic component 7 is aligned with the snap-fitting structure of the robot that matches the shape. Then, the button 703 is released to make the buckle 702 rebound and protrude from the working sleeve 1, so that the working sleeve 1 and the robot can be snap-fitted. Similarly, when disassembling the working sleeve 1 and the robot, it is only necessary to press the button 703 to retract the buckle 702 into the holding end of the working sleeve 1 to achieve disassembly.

[0040] When using a robot for surgery, the first tube body 2 and the second tube body 3 are connected to form a working sleeve 1, and then the working sleeve 1 is connected to the robot through the snap structure 5, so that the robot can use the working sleeve 1 to perform surgery. When it is necessary to place a fusion device during the operation, press the button 703 at the holding end of the second tube body 3 to unlock the second tube body 3 and the robot, and then pull out the second tube body 3 axially and remove it from the robot. The first tube body 2 remains connected to the robot, and the fusion device can be placed.

[0041] Furthermore, the hole 6 is provided on a baffle 8 on the surface of the working sleeve 1 , and the baffle 8 is fixed to the holding end of the working sleeve 1 by means of screws 801 .

[0042] In such Figure 1 The interior of the baffle 8 shown is as follows Figure 3The elastic component 7 shown can be disassembled and inspected by removing the screw 801 and the baffle 8.

[0043] In addition, the insertion end of the first tube 2 is provided with a tongue-shaped structure 9 extending in the axial direction.

[0044] The tongue-like structure 9 is as follows Figure 2 As shown, it can increase the operating space while protecting important tissues from damage by surgical tools.

[0045] based on Figure 1 The working sleeve shown in the embodiment of the specification can reduce the adverse effects of the working sleeve on the surgical site when placing a fusion device during minimally invasive spinal endoscopic surgery. At the same time, the working sleeve is easy to disassemble and assemble and can be reused, which provides convenience for the surgical process.

[0046] The above is only a preferred embodiment of this specification and does not limit this specification in any form. Although this specification has been disclosed as a preferred embodiment, it is not used to limit this specification. Any technician familiar with this profession can make some changes or modify the technical content disclosed above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of this specification. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of this specification without departing from the content of the technical solution of this specification still falls within the scope of the technical solution of this specification.

Claims

1. A working casing, characterized in that: The working sleeve (1) is a split sleeve, which is divided into a first tube body (2) and a second tube body (3) along the radial direction of the working sleeve (1); The working cannula (1) is used for being inserted into a surgical site; The second tubular body (3) is used to axially withdraw the second tubular body (3) inserted into the surgical site before placing a fusion device through a working sleeve (1) inserted into the surgical site.

2. The working sleeve according to claim 1, characterized in that: The first tube body (2) and the second tube body (3) have a connecting portion (4).

3. The working sleeve according to claim 2, characterized in that: The combining portion (4) comprises a protruding structure (401) arranged on the first tube body (2), and a groove structure (402) arranged on the second tube body (3) and matching the shape of the protruding structure (401).

4. The working sleeve according to claim 3, characterized in that: The protruding structure (401) is located at the insertion end of the first tube (2).

5. The working sleeve according to claim 4, characterized in that: The protruding structure (401) is a hook-shaped structure extending toward the gripping end of the second tube body (3).

6. The working sleeve according to claim 1, characterized in that: The holding ends of the first tube body (2) and the second tube body (3) are both provided with a buckle structure (5); The buckle structure (5) is used to connect with a robot so as to perform surgery via the robot.

7. The working sleeve according to claim 6, characterized in that: The buckle structure (5) comprises a hole (6) and an elastic component (7) arranged on the working sleeve (1); the elastic component (7) can protrude from the surface of the working sleeve (1) through the hole (6).

8. The working sleeve according to claim 7, characterized in that: The elastic component (7) comprises a spring (701) disposed inside the holding end of the working sleeve (1), and a buckle (702) and a button (703) abutting against the spring (701); In the absence of external force, the buckle (702) and the button (703) protrude from the working sleeve (1) through the hole (6) under the action of the spring (701), and the buckle (702) is used for engaging with the robot; The button (703) is used to drive the buckle (702) to retract into the working sleeve (1) when subjected to external force.

9. The working sleeve according to claim 7, characterized in that: The hole (6) is arranged on a baffle (8) on the surface of the working sleeve (1), and the baffle (8) is fixed to the holding end of the working sleeve (1) by means of screws (801).

10. The working sleeve according to claim 1, characterized in that: The insertion end of the first tube (2) is provided with a tongue-shaped structure (9) extending in the axial direction.

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