A distractor assembly

Abstract

The utility model relates to medical instrument technical field discloses a kind of dilator assemblies, comprising: protective cover assembly, it includes fixed rod and the protective cover of setting in the fixed rod front end;Dilator, it includes movable rod and the movable support leg of setting in the movable rod front end, the movable rod is hinged on the fixed rod, to make the protective cover and the movable support leg open or close, the movable support leg is used to cooperate with protective cover.The dilator assembly of the utility model can assist doctors in surgical operation, let the protective cover adhere to cartilage endplate, and the protective cover is not easy to run position, reduce the use difficulty of protective cover, reduce the learning cost of medical staff.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a spreader assembly. Background Technology

[0002] In open surgery, the protective shield is an auxiliary instrument used during spinal surgery when cleaning the cartilaginous endplate with a water jet. However, if the medical staff's technique is unstable or the force applied is inadequate, the shield may not fit the cartilaginous endplate properly. When using the water jet for corner cleaning, splashes can easily escape from excessively large gaps. Furthermore, the shield can shift overall, potentially leaving residue in the area to be cleaned. In short, the protective shield is somewhat difficult to use, increasing the learning curve for medical staff. Utility Model Content

[0003] The purpose of this invention is to provide a spreader assembly that reduces the difficulty of using the protective cover.

[0004] To achieve the above objectives, this utility model provides a spreader assembly, comprising:

[0005] A protective cover assembly, comprising a fixing rod and a protective cover disposed at the front end of the fixing rod;

[0006] The expander includes a movable rod and a movable support foot disposed at the front end of the movable rod. The movable rod is hinged to the fixed rod so that the protective cover can open or close with the movable support foot.

[0007] In some embodiments:

[0008] The middle part of the fixed rod and the middle part of the movable rod are hinged together.

[0009] In some embodiments, the expander assembly further includes:

[0010] A connecting block is disposed at the rear end of the fixed rod;

[0011] A control device is disposed on the connecting block and is also connected to the rear end of the movable rod. The control device is used to control the opening and closing of the movable support leg and the protective cover.

[0012] In some embodiments:

[0013] The control device includes a connecting rod, an elastic element, and a pressure block. One end of the connecting rod is threaded onto the connecting block, and the other end of the connecting rod is connected to the pressure block. The rear end of the movable rod is movably mounted on the connecting rod. The two ends of the elastic element are respectively connected to the connecting block and the movable rod. The elastic element is in a compressed state so that the rear end of the movable rod abuts against the pressure block.

[0014] In some embodiments:

[0015] The elastic element is a spring, and the elastic element is sleeved on the connecting rod.

[0016] In some embodiments:

[0017] The control device also includes a handle, which is disposed on the pressure block.

[0018] In some embodiments:

[0019] The movable support leg is provided with a hollowed-out portion. When the movable support leg and the protective cover are closed, at least a portion of the protective cover extends into the hollowed-out portion.

[0020] In some embodiments:

[0021] The height of the protective cover extending into the hollow section is higher than the height of the movable support legs surrounding the hollow section.

[0022] In some embodiments:

[0023] The movable support leg has anti-slip stripes on the side away from the protective cover.

[0024] In some embodiments:

[0025] The anti-slip stripes are provided around at least a portion of the cutout.

[0026] This utility model provides a spreader assembly, which has the following advantages compared with the prior art:

[0027] The present invention relates to a retractor assembly, comprising a protective cover assembly and a retractor. The protective cover assembly includes a fixed rod and a protective cover disposed at the front end of the fixed rod. The retractor includes a movable rod and a movable support leg disposed at the front end of the movable rod. The movable rod and the fixed rod are hinged to each other. When the movable support leg and the protective cover are opened, the movable support leg can assist in supporting the protective cover. The retractor assembly can assist doctors in performing surgical operations, allowing the protective cover to conform to the cartilage endplate, and the protective cover is not prone to displacement, reducing the difficulty of using the protective cover and reducing the learning cost for medical personnel. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the expander assembly according to an embodiment of the present invention.

[0029] Figure 2 yes Figure 1 Enlarged diagram of point A in the middle.

[0030] Figure 3 This is a structural schematic diagram of the expander assembly from another angle according to an embodiment of the present invention.

[0031] Figure 4 yes Figure 3 Enlarged diagram of point B in the middle.

[0032] Figure 5 This is a schematic diagram of the spreader according to an embodiment of the present invention.

[0033] Figure 6 This is a schematic diagram of the expansion connector connecting block and control device according to an embodiment of the present utility model.

[0034] In the diagram, 1 is the protective cover assembly; 2 is the expander; 3 is the connecting block; 4 is the control device; 11 is the fixing rod; 12 is the protective cover; 21 is the movable rod; 22 is the movable support leg; 221 is the hollow part; 222 is the anti-slip stripe; 41 is the connecting rod; 42 is the elastic element; 43 is the pressure block; and 44 is the handle. Detailed Implementation

[0035] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0036] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0039] Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] Please refer to Figure 1 and Figure 3 An embodiment of the present invention provides a spreader assembly, which includes a protective cover assembly 1 and a spreader 2.

[0041] The protective cover assembly 1 includes a fixing rod 11 and a protective cover 12 disposed at the front end of the fixing rod 11.

[0042] The expander 2 includes a movable rod 21 and a movable support leg 22 located at the front end of the movable rod 21. The movable rod 21 is hinged to the fixed rod 11 so that the protective cover 12 can open or close with the movable support leg 22.

[0043] The movable leg 22 is configured such that when the movable leg 22 and the protective cover 12 are open, the movable leg 22 contacts other tissues or cartilage structures in the human body, assisting in supporting the protective cover 12, thereby assisting the surgeon in performing surgical operations, ensuring that the protective cover 12 fits tightly against the cartilaginous endplate, and stabilizing the position of the protective cover 12. When the movable leg 22 and the protective cover 12 are closed, they can enter the intervertebral space to allow the spreader assembly to move to the designated position.

[0044] The retractor assembly of this embodiment can assist doctors in performing surgical operations. The retractor can support the protective cover 12, reduce the generation of splashes, and at the same time, the protective cover is stable and not easy to shift, reducing the difficulty of using the protective cover 12 and reducing the learning cost for medical staff.

[0045] In this embodiment, the middle part of the fixed rod 11 and the middle part of the movable rod 21 are hinged together.

[0046] The protective cover 12 and the movable support leg 22 are respectively located at the front end of the fixed rod 11 and the front end of the movable rod 21, with the hinge position located in the middle. The opening and closing of the protective cover 12 and the movable support leg 22 can be achieved by controlling the relative position of the rear end of the fixed rod 11 and the rear end of the movable rod 21.

[0047] The expander assembly also includes a connecting block 3 and a control device 4. The connecting block 3 is located at the rear end of the fixed rod 11. The control device 4 is located on the connecting block 3 and is also connected to the rear end of the movable rod 21. The control device 4 is used to control the opening and closing of the movable support leg 22 and the protective cover 12.

[0048] The control device 4 is used to control the opening and closing of the protective cover 12 and the movable support leg 22, which facilitates the operation of medical personnel.

[0049] The control device 4 includes a connecting rod 41, an elastic element 42, and a pressure block 43. One end of the connecting rod 41 is threaded to the connecting block 3, and the other end of the connecting rod 41 is connected to the pressure block 43. The rear end of the movable rod 21 is movably mounted on the connecting rod 41. The two ends of the elastic element 42 are respectively connected to the connecting block 3 and the movable rod 21. The elastic element 42 is in a compressed state so that the rear end of the movable rod 21 abuts against the pressure block 43.

[0050] Twisting the connecting rod 41 on the connecting block 3 adjusts the position of the connecting rod 41 relative to the connecting block 3, thereby causing the pressure block 43 to move in the direction of the connecting block 3 or away from the direction of the connecting block 3. This drives the movable rod 21 to move relative to the fixed rod 11, realizing the opening and closing of the protective cover 12 and the movable support leg 22. The elastic element 42 allows the rear end of the movable rod 21 to abut against the pressure block 43, ensuring that the movable rod 21 can move with the pressure block 43 when the position of the connecting rod 41 is adjusted.

[0051] In this embodiment, the elastic element 42 is a spring, which is sleeved on the connecting rod 41. The two ends of the spring are respectively connected to the connecting block 3 and the rear end of the movable rod 21. The rear end of the movable rod 21 is provided with a through hole, through which the connecting rod 41 passes. The movable rod 21 near the through hole is pressed against the pressure block 43 by the elastic element 42.

[0052] The control device 4 also includes a handle 44, which is mounted on the pressure block 43. The handle 44 and the pressure block 43 can be separate or integrally formed. The handle 44 facilitates the turning of the movable rod 21 to control the opening and closing of the protective cover 12 and the movable support leg 22.

[0053] In some embodiments, the movable support leg 22 is provided with a hollow portion 221. When the movable support leg 22 and the protective cover 12 are closed, at least a portion of the protective cover 12 extends into the hollow portion 221. With this structure, when the movable support leg 22 and the protective cover 12 are closed, the protective cover 12 and the movable support leg 22 form a nested structure, preventing the protective cover 12 and the movable support leg 22 from becoming excessively thick, thus allowing them to enter the intervertebral space when closed. The height of the protective cover 12 extending into the hollow portion 221 is higher than the height of the movable support leg 22 surrounding the hollow portion 221, allowing for a more reasonable setting of the thickness of the protective cover 12 and the movable support leg 22 when closed.

[0054] The movable support leg 22 has anti-slip stripes 222 on its side away from the protective cover 12. When the movable support leg 22 assists in supporting the protective cover 12, the anti-slip stripes 222 increase the friction and improve the positional stability of the movable support leg 22, making the protective cover 12 stable and less prone to displacement, reducing the difficulty of using the protective cover 12 and reducing the learning cost for medical staff.

[0055] Anti-slip stripes 222 are provided around at least a portion of the hollowed-out portion 221. Due to the hollowed-out portion 221, the contact area of ​​the movable support leg 22 is reduced, and anti-slip stripes 222 are provided on the contact surface as much as possible to ensure that the protective cover is not easily displaced.

[0056] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A spreader assembly, characterized in that, include: A protective cover assembly, comprising a fixing rod and a protective cover disposed at the front end of the fixing rod; The expander includes a movable rod and a movable support foot disposed at the front end of the movable rod. The movable rod is hinged to the fixed rod so that the protective cover can open or close with the movable support foot.

2. The expander assembly according to claim 1, characterized in that: The middle part of the fixed rod and the middle part of the movable rod are hinged together.

3. The expander assembly according to claim 2, characterized in that, Also includes: A connecting block is disposed at the rear end of the fixed rod; A control device is disposed on the connecting block and is also connected to the rear end of the movable rod. The control device is used to control the opening and closing of the movable support leg and the protective cover.

4. The expander assembly according to claim 3, characterized in that: The control device includes a connecting rod, an elastic element, and a pressure block. One end of the connecting rod is threaded onto the connecting block, and the other end of the connecting rod is connected to the pressure block. The rear end of the movable rod is movably mounted on the connecting rod. The two ends of the elastic element are respectively connected to the connecting block and the movable rod. The elastic element is in a compressed state so that the rear end of the movable rod abuts against the pressure block.

5. The expander assembly according to claim 4, characterized in that: The elastic element is a spring, and the elastic element is sleeved on the connecting rod.

6. The expander assembly according to claim 4, characterized in that: The control device also includes a handle, which is disposed on the pressure block.

7. The expander assembly according to claim 1, characterized in that: The movable support leg is provided with a hollowed-out portion. When the movable support leg and the protective cover are closed, at least a portion of the protective cover extends into the hollowed-out portion.

8. The expander assembly according to claim 7, characterized in that: The height of the protective cover extending into the hollow section is higher than the height of the movable support legs surrounding the hollow section.

9. The expander assembly according to claim 7, characterized in that: The movable support leg has anti-slip stripes on the side away from the protective cover.

10. The expander assembly according to claim 9, characterized in that: The anti-slip stripes are provided around at least a portion of the cutout.

Images