Adjusting nut self-holding locking tool

Abstract

The utility model discloses a kind of adjusting nut self-holding locking tools, which belong to the technical field of medical devices.It solves the defect that adjusting nut is easy to fall off in the locking tool for adjusting nut in the prior art.The main structure includes a rod body, an installation slot with one end opening is arranged at the end of the rod body, long holes communicating with the installation slot are arranged at the two sides of the rod body, a mandrel is installed in the installation slot, the mandrel is slidably connected with the rod body through a fixing pin and the long holes, and a spring is arranged between the end of the mandrel and the inner wall of the installation slot.The utility model is mainly used for connecting and fixing bones or soft tissues.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, and more specifically, it relates to a self-locking tool for adjusting nuts. Background Technology

[0002] The passive implantable adjustable transverse connector is a surgical instrument primarily used to connect and fix bones or soft tissues. Its adjustable feature allows it to be adjusted according to surgical needs for better surgical outcomes, providing stable support and fixation during surgery. It mainly consists of two connecting rods and an adjusting screw. The connecting rods can be adjusted to accommodate different bone or soft tissue connections; the adjusting screw can be rotated to adjust the length and angle of the connecting rods for better fixation.

[0003] However, during actual surgery, doctors often repeatedly adjust the tightness of the nut to adjust the length and angle of the connecting rod, which can easily cause the adjusting nut to fall off. Therefore, it is necessary to hold the adjusting nut in place for easy installation and tightening.

[0004] In the existing technology, some auxiliary tools are used for the installation and locking of adjusting nuts, but they generally have the following shortcomings: 1) Some tools are complex in design and have complicated operation steps, which increases the time cost of surgery; 2) Some tools cannot effectively maintain the position of the adjusting nut, which can easily cause the nut to slip or become misaligned, affecting the final fixation effect; 3) Some existing tools can only be used for specific models or specifications of adjusting nuts, which has poor versatility and cannot meet diverse clinical needs. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a self-locking tool for adjusting nuts.

[0006] To achieve the above objectives, this utility model employs the following technical solution:

[0007] A self-locking tool for adjusting nuts includes a rod body. The end of the rod body is provided with a mounting groove with one end open. Both sides of the rod body are provided with elongated holes communicating with the mounting groove. A mandrel is installed in the mounting groove. The mandrel slides along the elongated holes on the rod body through a fixing pin. A spring is provided between the end of the mandrel and the inner wall of the mounting groove.

[0008] Preferably, the head of the mandrel has a conical structure, and the side of the conical structure is provided with an opening groove.

[0009] Preferably, the mandrel is provided with a fixing pin through hole, the fixing pin passes through the fixing pin through hole, and the two ends of the fixing pin extending out of the fixing pin through hole are slidably mounted on the elongated hole.

[0010] Preferably, the end of the rod is provided with an internal hexagonal part that mates with the adjusting nut.

[0011] Preferably, the elongated holes are provided in two places and are symmetrically installed on both sides of the rod.

[0012] Preferably, the outer surface of the rod is provided with an anti-slip texture. The anti-slip texture is used to enhance the friction between the user's hand and the rod, making it easier to apply greater torque without slipping, thereby improving the convenience and stability of tool use.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model can achieve rapid self-holding and locking of the adjusting nut, especially when implanting an adjustable transverse connector in posterior thoracic and lumbar spine pedicle screw surgery, which greatly improves the operation speed and efficiency, helps to shorten the operation time, and reduces the surgical risk for patients.

[0015] 2. By designing the internal hexagonal structure at the end of the rod and its cooperation with the spindle, the tool simplifies the operation steps while providing locking torque. Doctors only need to rotate the rod to complete the locking of the adjusting nut without any additional complicated operation steps.

[0016] 3. The design of the mandrel head (especially the conical structure and open groove in Example 2) gives the mandrel a certain degree of elasticity, which can effectively hold the nut when it is inserted into the middle of the adjusting nut, preventing it from falling off due to being too loose during the adjustment process, thus ensuring the safety and stability of the surgical procedure.

[0017] 4. The combination design of spring and spindle not only provides the necessary elasticity to ensure that the spindle head always presses against the adjusting nut, but also allows the spindle to have a certain extension and retraction stroke to adapt to different operating needs and adjustment ranges, increasing the versatility and flexibility of the tool;

[0018] In summary, this invention is simple and quick to operate. The mandrel can quickly hold the adjusting nut or prevent the nut from falling off during adjustment. At the same time, rotating the rod can quickly lock it. It not only improves surgical efficiency and reduces surgical risks, but also simplifies the operation process and enhances the safety and reliability of the operation. It is especially important for the process of implanting an adjustable transverse connector in posterior thoracic and lumbar spine pedicle screw surgery. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is an exploded view of the present invention;

[0021] Figure 3This is one of the internal structural diagrams of this utility model;

[0022] Figure 4 This is the second schematic diagram of the internal structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the mandrel structure in this utility model;

[0024] Figure 6 This is a cross-sectional view of the rod body in this utility model;

[0025] Figure 7 This is a schematic diagram of the adjustable cross connector.

[0026] In the diagram: 1. Rod body; 2. Spindle; 3. Fixing pin; 4. Spring; 5. Adjusting nut; 6. Adjustable cross connector; 11. Long hole; 12. Hexagonal socket; 13. Mounting slot; 21. Opening slot; 22. Fixing pin through hole. Detailed Implementation

[0027] The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

[0028] Example 1:

[0029] like Figure 1-6 As shown, a self-locking tool for adjusting nuts includes a rod 1. The end of the rod 1 has an open mounting groove 13. Both sides of the rod 1 have elongated holes 11 communicating with the mounting groove 13. A spindle 2 is installed within the mounting groove 13. The spindle 2 can slide along the elongated holes 11 on the rod 1 via a fixing pin 3. A spring 4 is provided between the end of the spindle 2 and the inner wall of the mounting groove 13. Specifically, there are two elongated holes 11, symmetrically installed on both sides of the rod 1.

[0030] In this embodiment, the fixing pin 3 is tightly fitted to the spindle 2, connecting the spindle 2 and the rod 1 into a movable body, realizing the free sliding and limiting of the spindle 2; the spring 4 has a certain elastic force, and when the spring 4 contracts, it can press the head of the spindle 2 into the middle of the adjusting nut 5 on the adjustable cross connector 6, and when the spring 4 relaxes, it can hold the adjusting nut 5; through the cooperation of the spindle 2 and the spring 4, when the adjusting nut 5 is adjusted back and forth, the head of the spindle 2 always abuts against the adjusting nut 5, preventing the adjusting nut 5 from falling off after being too loose.

[0031] Example 2:

[0032] like Figure 5As shown, a self-holding locking tool for adjusting nuts differs from Embodiment 1 in that the head of the spindle 2 is a conical structure, and the side of the conical structure is provided with an opening groove 21. The opening groove 21 on the side gives the head a certain elasticity. The compression spring 4 at the tail of the spindle 2 has a telescopic stroke and is restricted within the rod 1 by a fixing pin 3.

[0033] Specifically, the spindle 2 is provided with a fixing pin through hole 22, the fixing pin 3 passes through the fixing pin through hole 22, and the two ends of the fixing pin 3 extending out of the fixing pin through hole 22 are slidably installed on the elongated hole 11, and the fixing pin 3 can slide freely in the elongated hole 11.

[0034] Furthermore, the end of the rod 1 is provided with an internal hexagon 12 that mates with the adjusting nut 5, through which a locking torque can be provided.

[0035] Furthermore, the outer surface of the lever 1 is provided with an anti-slip texture to enhance the friction between the user's hand and the lever 1, making it easier to apply greater torque without slipping, thus improving the convenience and stability of tool use.

[0036] The working principle of this utility model is as follows:

[0037] like Figure 7 As shown, this utility model is used for the implantation of an adjustable transverse connector 6 during posterior thoracic and lumbar spine screw surgery. It is a tool for quickly holding and locking the adjusting nut 5. The spindle 2 and the rod 1 can quickly hold and lock the adjusting nut 5. The spindle 2 has a certain elasticity and can be inserted into the middle of the adjusting nut 5 to hold it. Rotating the rod 1 causes the adjusting nut 5 to rotate downwards, and the adjusting nut 5 automatically falls off the spindle 2. Continuing to rotate the rod 1 locks the adjustable transverse connector 6. Its operation is simple and fast. The spindle 2 can quickly hold the adjusting nut 5 or prevent the nut from falling off during the adjustment process. Therefore, rotating the rod 1 can quickly lock it.

Claims

1. A self-sustaining locking tool for adjusting a nut, comprising a rod body (1), characterized in that: The end of the rod (1) is provided with an open mounting groove (13), and the two sides of the rod (1) are provided with elongated holes (11) communicating with the mounting groove (13). A mandrel (2) is installed in the mounting groove (13). The mandrel (2) slides along the elongated hole (11) on the rod (1) through a fixing pin (3). A spring (4) is provided between the end of the mandrel (2) and the inner wall of the mounting groove (13).

2. The self-contained locking tool of claim 1, wherein: The head of the mandrel (2) is a conical structure, and the side of the conical structure is provided with an opening groove (21).

3. The self-contained locking tool of claim 2, wherein: The mandrel (2) is provided with a fixing pin through hole (22), the fixing pin (3) passes through the fixing pin through hole (22), and the two ends of the fixing pin (3) extending out of the fixing pin through hole (22) are slidably installed on the elongated hole (11).

4. The self-contained locking tool of claim 1-3, wherein: The end of the rod (1) is provided with an internal hexagon (12) that cooperates with the adjusting nut (5).

5. The self-contained locking tool of claim 1-3, wherein: The elongated holes (11) are provided in two places and are symmetrically installed on both sides of the rod (1).

6. The self-contained locking tool for adjusting a nut according to any one of claims 1 to 3, characterized in that: The outer surface of the rod (1) is provided with anti-slip texture.

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