Square column needle clamp for external fixation support

Abstract

The utility model provides a square column needle clamp for an external fixation support, which relates to the technical field of medical instruments and comprises a first square column and a second square column, the opposite ends of the first square column and the second square column are inserted and sleeved and are in running fit, and the relative angle is locked and unlocked through a locking structure. Threaded grooves used for being connected with the support in a matched mode are formed in the opposite far ends of the first square column and the second square column, and threaded holes or / and unthreaded holes are formed in the side walls of the first square column and the second square column. The device can realize angle adjustment of the needle clamp and is convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical equipment technical field especially is involved in a square column needle clamp for external fixation support. BACKGROUND

[0002] In the modern medical field, external fixation support as an important treatment method is widely used in the treatment of bone fracture and bone deformity correction and other diseases. The external fixation support is usually composed of multiple components, among which the square column needle clamp is one of the key components. The square column needle clamp has threaded holes at the upper and lower ends of the sagittal plane direction and can be fixed on the ring-shaped assembly. The remaining four faces each have multiple light holes or threaded holes. In application, it can realize the function of fixing the steel needle in the coronal plane and horizontal plane direction, but the angle adjustment is limited. However, in actual application, the direction of the steel needle is multidirectional and needs to be adjusted multiple times. When adjusting the direction with the four-pronged column, it is not convenient to find the required direction, and it is time-consuming and laborious, which may lead to unsatisfactory fixation effect and affect the rehabilitation process of the patient. For example, in some special angle fracture sites, the needle clamp that cannot adjust the angle may not accurately fix the fracture end, increasing the risk of fracture displacement and prolonging the patient's recovery time, and also bringing more pain and economic burden to the patient. SUMMARY

[0003] The utility model aims at providing a square column needle clamp for external fixation support to solve the technical problem of inconvenient use in the prior art.

[0004] To solve the above problems, the square column needle clamp for external fixation support according to the utility model adopts the following technical scheme:

[0005] The square column needle clamp for external fixation support provided by the utility model comprises a first square column and a second square column. The opposite ends of the first square column and the second square column are inserted into each other and rotate together, and the relative angle is locked and unlocked through a locking structure. Threaded grooves for connecting the support are formed on the opposite distal ends of the first square column and the second square column. Threaded holes or light holes are formed on the side walls of the first square column and the second square column.

[0006] Preferably, mounting columns and mounting grooves matched with the mounting columns are arranged on the opposite ends of the first square column and the second square column, respectively. The mounting column of the first square column is matched and inserted into the mounting groove of the second square column, and the first square column can rotate relative to the second square column.

[0007] Preferably, the locking structure comprises a sliding groove extending along the circumferential wall of the mounting column and connected end to end in a ring shape, a pin hole penetrating the groove wall of the mounting groove, and a positioning pin. When the mounting column is matched and inserted into the mounting groove, the pin hole is in communication with the sliding groove, and the positioning pin can be inserted into the sliding groove through the pin hole to limit the axial movement of the first square column and the second square column, or to limit the axial movement and circumferential rotation of the first square column and the second square column.

[0008] Preferably, coaxial and communicating light holes are formed on the opposite two side walls of the first square column, and coaxial and communicating threaded holes are formed on the other opposite two side walls of the first square column.

[0009] Preferably, coaxial and communicating light holes are formed on the opposite two side walls of the second square column, and coaxial and communicating threaded holes are formed on the other opposite two side walls of the second square column.

[0010] The beneficial effects of the utility model are as follows:

[0011] The utility model provides a square column needle clamp for external fixing support, which is different from the prior art in that it comprises a first square column and a second square column, the opposite ends of the first square column and the second square column are inserted into and rotationally matched with each other, and the relative angle is locked and unlocked through a locking structure, threaded grooves for matching and connecting the support are formed on the opposite distal ends of the first square column and the second square column, and threaded holes or / and light holes are formed on the side walls of the first square column and the second square column. The device can effectively realize angle adjustment and improve efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following will briefly introduce the drawings needed to be used in the embodiment:

[0013] Figure 1 It is an exploded view of a square column needle clamp for external fixing support;

[0014] Figure 2 It is an axial side view of a square column needle clamp for external fixing support;

[0015] Figure 3 It is a sectional view of a square column needle clamp for external fixing support.

[0016] In the figure: 1, second square column; 2, first square column; 3, positioning pin; 4, pin hole; 5, sliding slot; 7, threaded hole; 9, light hole; 11, threaded groove. DETAILED DESCRIPTION

[0017] In order to make the technical purpose, technical scheme and beneficial effects of the utility model more clear, the following will further illustrate the technical scheme of the utility model by combining with the drawings and specific embodiment.

[0018] The square column needle clamp for external fixing support provided by the utility model solves the problem that the existing square column needle clamp cannot be adjusted in angle, realizes more accurate fracture fixation and better adaptation to complex fracture conditions of different patients, and comprises a first square column 2 and a second square column 1, the opposite ends of the first square column 2 and the second square column 1 are inserted into and rotationally matched with each other, the two can axially move apart or be sleeved and inserted into each other and then be relatively rotated, so that disassembly or angle adjustment is realized.

[0019] The first square column 2 and the second square column 1 are locked and unlocked by the locking structure, and after being adjusted to a suitable angle, the square column needle clamp can be fixed at the angle, ensuring that the angle does not change during use and ensuring the stability of the fixation.

[0020] Threaded grooves 11 for cooperating with the connecting bracket are formed on the opposite distal ends of the first square column 2 and the second square column 1, facilitating connection with other components of the external fixation bracket and achieving overall fixation. Threaded holes 7 or / and light holes 9 are formed on the side walls of the first square column 2 and the second square column 1, and other accessories can be installed or fixed according to actual needs.

[0021] Further, mounting columns and mounting grooves matched with the mounting columns are respectively arranged on the opposite ends of the first square column 2 and the second square column 1, the mounting column of the first square column 2 is matched and inserted into the mounting groove of the second square column 1, and the first square column 2 can rotate relative to the second square column 1.

[0022] The locking structure includes a sliding groove 5 (providing a movable track for the positioning pin 3) extending circumferentially along the peripheral wall of the mounting column and connected end to end in a ring shape, a pin hole 4 penetrating the groove wall of the mounting groove, and a positioning pin 3. When the mounting column is matched and inserted into the mounting groove, the pin hole 4 is in communication with the sliding groove 5, and the positioning pin 3 can be inserted into the sliding groove 5 through the pin hole 4 to limit the axial movement of the first square column 2 and the second square column 1, or to limit the axial movement and circumferential rotation of the first square column 2 and the second square column 1.

[0023] When adjusting the angle, the positioning pin 3 is in a relaxed state and is not inserted into the sliding groove 5 or is only partially inserted into the sliding groove 5, so that the first square column 2 can freely rotate relative to the second square column 1. When only the axial movement of the first square column 2 and the second square column 1 needs to be limited, the positioning pin 3 is only partially inserted into the sliding groove 5, which can prevent the square column needle clamp from loosening or shifting in the axial direction and ensure the stability of the fixation. When the axial movement and circumferential rotation of the first square column 2 and the second square column 1 need to be limited at the same time, the positioning pin 3 is clamped in the sliding groove 5, preventing the rotation of the first square column 2 relative to the second square column 1, thereby locking the square column needle clamp at a specific angle.

[0024] Coaxial and communicating light holes 9 are formed on the opposite two side walls of the first square column 2, and coaxial and communicating threaded holes 7 are formed on the other opposite two side walls of the first square column 2. Coaxial and communicating light holes 9 are formed on the opposite two side walls of the second square column 1, and coaxial and communicating threaded holes 7 are formed on the other opposite two side walls of the second square column 1.

[0025] Further, the positioning pin 3 is provided in a columnar structure, and a rubber ring is sleeved on the positioning pin 3, and the diameter of the rubber ring (when sleeved on the positioning pin 3) is smaller than the diameter of the pin hole 4, so as to be able to be smoothly inserted into the pin hole 4 and enter the sliding groove 5. The diameter of the positioning pin 3 is smaller than the width of the sliding groove 5, and the diameter of the rubber ring (when sleeved on the positioning pin 3) is greater than the width of the sliding groove 5, and when the positioning pin 3 with the rubber ring is inserted into the sliding groove 5, the rubber ring can generate a certain pressure with the inner wall of the sliding groove 5, thereby enhancing the locking effect and preventing the positioning pin 3 from being pulled out.

[0026] Finally, it should be noted that: the above examples are only for illustration and not for limiting the technical solutions of the present application, any equivalent replacement and modification or partial replacement of the present application without departing from the spirit and scope of the present application should be covered within the scope of protection of the claims of the present application.

Claims

1. A square column pin clamp for an external fixation frame, characterized by, The first square column and the second square column are inserted into each other and are rotatably connected, and the relative angle of the first square column and the second square column is locked and unlocked through a locking structure.

2. The square pin clamp for an external fixation support according to claim 1, characterized in that, The opposite ends of the first square column and the second square column are respectively provided with a mounting column and a mounting groove matched with the mounting column, and the mounting column of the first square column is matched and inserted into the mounting groove of the second square column, and the first square column can rotate relative to the second square column.

3. The square pin clamp for an external fixation support according to claim 2, characterized in that, The locking structure comprises a sliding groove extending along the circumferential wall of the mounting column and connected in a ring shape, a pin hole penetrating the groove wall of the mounting groove, and a positioning pin, when the mounting column is matched and inserted into the mounting groove, the pin hole is communicated with the sliding groove, and the positioning pin can be inserted into the sliding groove through the pin hole to limit the axial movement of the first square column and the second square column, or to limit the axial movement and circumferential rotation of the first square column and the second square column.

4. The square pin clamp for an external fixation support according to claim 3, characterized in that, The opposite two side walls of the first square column are provided with coaxial and communicating light holes, and the other opposite two side walls of the first square column are provided with coaxial and communicating threaded holes.

5. The square pin clamp for an external fixation support according to claim 4, characterized in that, The opposite two side walls of the second square column are provided with coaxial and communicating light holes, and the other opposite two side walls of the second square column are provided with coaxial and communicating threaded holes. The opposite two side walls of the second square column are provided with coaxial and communicating light holes, and the other opposite two side walls of the second square column are provided with coaxial and communicating threaded holes.

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