CN219147872U

CN219147872U - PFN sighting device

Info

Publication number: CN219147872U
Application number: CN202320195818.8U
Authority: CN
Inventors: 关长勇; 国华; 张兰
Original assignee: 8th Medical Center of PLA General Hospital
Current assignee: 8th Medical Center of PLA General Hospital
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2023-06-09
Anticipated expiration: 2033-02-13

Abstract

The utility model discloses a PFN sighting device, which is characterized in that: the clamping fixture comprises guide pin guide tubes, a first clamping device, a second clamping device, a handle, a sliding groove, threaded holes, rubber pads, sliding blocks and clamping fixing blocks, wherein a plurality of guide pin guide tubes are arranged between the first clamping device and the second clamping device, the sliding blocks are fixedly connected to two sides of the second clamping device, and the sliding grooves are cut in positions, corresponding to the sliding blocks, of the first clamping device. The advantages are that: this patent designs into the arc with the guide pin guide tube, for the adjustment of being convenient for, select needle point of inserting, designs into three for a set of with the pipe to design the grab ware structure, it is fixed to grab three guide pin guide tube, can easily solve the guide pin and get into the angle problem in thighbone marrow chamber from the incision outward like this during the operation, and the operation degree of difficulty greatly reduced, therefore can accomplish little incision, percutaneous operation.

Description

PFN sighting device

Technical Field

The utility model relates to the field of orthopedic surgical instruments, in particular to a PFN sighting device.

Background

The intertrochanteric fracture is a fracture which is common in clinic and has relatively high treatment difficulty, the treatment principle is that the internal fixation of a PFN (intramedullary nail) at the proximal end of a femur is the first choice, the operation is designed according to a bone model, however, the body is blocked by soft tissues such as muscle, fat and the like, so that the angle is quite large when a guide needle enters a medullary cavity from the outside of a knife edge after an opening of a greater trochanter, and the current guide needle is straight and the operation difficulty is known, so that an effective guide needle guiding device is clinically required, the operation difficulty is reduced, and the operation time is saved. In view of the above, we propose a PFN aimer to solve the above problems.

Disclosure of Invention

The technical problem to be solved by the utility model is to overcome the technical defects, and provide the PFN sighting device which is simple in structure, strong in practicability, various in functions and good in using effect.

In order to solve the technical problems, the technical scheme provided by the utility model is as follows: PFN sight, its characterized in that: the clamping fixture comprises guide pin guide tubes, a first clamping device, a second clamping device, a handle, a sliding groove, threaded holes, rubber pads, sliding blocks and clamping fixing blocks, wherein a plurality of guide pin guide tubes are arranged between the first clamping device and the second clamping device, the sliding blocks are fixedly connected to two sides of the second clamping device, and the sliding grooves are cut in positions, corresponding to the sliding blocks, of the first clamping device.

Further, the guide pin guide tube is of an arc-shaped structure.

Further, a rubber pad is fixedly connected to one side of the second gripper close to the guide needle guide tube.

Further, two sides of the second gripper are rotatably connected with clamping fixing blocks, and one end, close to the first gripper, of each clamping fixing block is provided with external threads.

Further, a threaded hole is formed in a position, corresponding to the clamping and fixing block, of the first gripper.

Further, a handle is fixedly connected to one end, far away from the first grab, of the second grab.

Compared with the prior art, the utility model has the advantages that: this patent designs into the arc with the guide pin guide tube, for the adjustment of being convenient for, select needle point of inserting, designs into three for a set of with the pipe to design the grab ware structure, it is fixed to grab three guide pin guide tube, can easily solve the guide pin and get into the angle problem in thighbone marrow chamber from the incision outward like this during the operation, and the operation degree of difficulty greatly reduced, therefore can accomplish little incision, percutaneous operation.

Drawings

Fig. 1 is a schematic view of the structure of the PFN sight of the present utility model.

Fig. 2 is a schematic view of the structure of the PFN sight of the present utility model.

As shown in the figure: 1. a guide pin guiding tube; 2. a first gripper; 3. a second gripper; 4. a handle; 5. a chute; 6. a threaded hole; 7. a rubber pad; 8. a slide block; 9. clamping the fixed block.

Detailed Description

Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings. Wherein like parts are designated by like reference numerals.

It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.

In the description of the present utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. In addition, the term "include" and any variations thereof are intended to cover a non-exclusive inclusion.

With reference to fig. 1-2, the pfn sight is characterized in that: the novel guide pin clamp comprises a guide pin guide tube 1, a first grab 2, a second grab 3, a handle 4, a sliding chute 5, a threaded hole 6, a rubber pad 7, a sliding block 8 and a clamping fixing block 9, wherein a plurality of guide pin guide tubes 1 are arranged between the first grab 2 and the second grab 3, the sliding block 8 is fixedly connected to two sides of the second grab 3, and the sliding chute 5 is cut at the position of the first grab 2 corresponding to the sliding block 8; the guide needle guiding tube 1 is of an arc-shaped structure; a rubber pad 7 is fixedly connected to one side of the second gripper 3, which is close to the guide needle guide tube 1; the two sides of the second gripper 3 are rotatably connected with clamping fixing blocks 9, and one end of the clamping fixing block 9, which is close to the first gripper 2, is provided with external threads; the first gripper 2 is provided with a threaded hole 6 at a position corresponding to the clamping and fixing block 9; the end of the second gripper 3 far away from the first gripper 2 is fixedly connected with a handle 4.

When the utility model is concretely implemented, after the greater trochanter is exposed through skin in operation, the fixed arc guide needle guide tube 1 is inserted into the tip position of the greater trochanter through skin, after perspective, the needle insertion point position and angle can be adjusted by using the three guide needle guide tubes 1 of the guide device, the guide needle is inserted into the femoral marrow cavity, and the intramedullary nail is smoothly inserted into the marrow cavity along the guide needle, so that the internal fixation operation is smoothly completed.

The utility model and its embodiments have been described above with no limitation, and the actual construction is not limited to the embodiments of the utility model as shown in the drawings. In summary, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical solution should not be creatively devised without departing from the gist of the present utility model.

Claims

Pfn sight, characterized in that: including guide pin guiding tube (1), grab first (2), grab second (3), handle (4), spout (5), screw hole (6), rubber pad (7), slider (8) and clamp fixed block (9), grab and be equipped with a plurality of guide pin guiding tube (1) between first (2) and grab second (3), guide pin guiding tube (1) are the arc structure, grab second (3) both sides fixedly connected with slider (8), grab first (2) and slider (8) corresponding position excavation have spout (5).
2. The PFN aimer of claim 1, wherein: and a rubber pad (7) is fixedly connected to one side of the second gripper (3) close to the guide pin guide tube (1).
3. The PFN aimer of claim 1, wherein: the two sides of the second grab (3) are rotationally connected with clamping fixing blocks (9), and one end, close to the first grab (2), of each clamping fixing block (9) is provided with external threads.
4. The PFN aimer of claim 1, wherein: screw holes (6) are arranged at positions of the first gripper (2) corresponding to the clamping and fixing blocks (9).
5. The PFN aimer of claim 1, wherein: and one end, far away from the first grab (2), of the second grab (3) is fixedly connected with a handle (4).