Auxiliary device for placing steel plate in middle

Abstract

The invention provides an auxiliary device for centrally placing a steel plate, which comprises two pairs of double-joint seaming pliers, jaws of the two pairs of double-joint seaming pliers respectively clamp bone cortex, and the tail end of a handle of any pair of double-joint seaming pliers is provided with a serrated locker. Any pair of double-joint nipping pliers is provided with middle lock catches which are arranged at intervals in the length direction of the double-joint nipping pliers, sleeves are arranged on the two middle lock catches respectively, circular rings are arranged at the ends, away from the double-joint nipping pliers, of the two sleeves, and a third sleeve is arranged in the two circular rings jointly; the third sleeves are located on the center line of the double-joint seaming pliers, the other ends of the two third sleeves are both installed on the center line of the long axis of the steel plate, and the steel plate is placed in the middle of a small incision of a patient. According to the invention, the jaws of the two double-joint seaming forceps are respectively used for clamping the bone cortex, so that the steel plate can be accurately placed in the middle through a small incision, the trauma is smaller, the bleeding is less, the operation time is shortened, the operation success rate is improved, and the perspective frequency is greatly reduced.

Description

Technical Field

[0001] The invention relates to the technical field of surgical steel plate placement, and in particular to an auxiliary device for centrally placing a steel plate. Background Art

[0002] Most fracture patients need open reduction and plate fixation, or limited open reduction and plate fixation. In order to promote healing, the plate is generally placed in the center along the long axis of the long bone shaft, and also to make the plate fit better (some plates are anatomical plates). Placing the plate in the correct position can reduce the probability of fracture nonunion and the risk of plate screw breakage; placing the plate in the correct position can better assist fracture reduction; the X-ray film will look better when reviewing, and the patient and family satisfaction will be higher. However, it is difficult to achieve precise centering using current instruments during surgery, and there are the following technical defects: 1) Most bones are not regular cylindrical or prismatic, etc. Although many bones are called long bones, such as tibia and fibula, femur, humerus, ulna and radius, in fact, it is found in clinical practice that any surface of these long bones is not flat, so anatomical plates are designed for each part and each surface, just to make the plate and bone surface fit better, so as to achieve the optimal mechanical solution, but in actual operation, it is difficult to make the plate and bone surface fit perfectly, one of the reasons is that the plate is not placed in the correct position, and the plate is too close. The distal or far end is one reason, and the failure of the plate to be placed in the center is also an important reason. This reason is often overlooked and may eventually lead to nonunion, delayed bone healing, screw loosening, plate and screw breakage, etc.; 2) During the operation, in order to achieve the centering of the plate, a longer incision is made to fully expose the required length of the plate, and the plate is judged under direct vision to see whether it is centered. Repeated adjustments are made until it is roughly centered and then fixed; another method is to use fingers to touch the plate to ensure that it is roughly located in the middle of the bone cortex and then fix it; another method is to use Kirschner wires for temporary fixation, and check whether it is centered through fluoroscopy. If there is a deviation, repeated adjustments are made until it is centered and then fixed. The above operations are rough and time-consuming, and the surgical incisions are long, the trauma is large, and the number of fluoroscopy times is high, which increases the risk of radiation exposure for medical staff and patients; 3) Especially now that more and more doctors in clinical practice use the Mippo technique to perform fracture open reduction and internal fixation surgery, it is impossible to achieve the central placement of the steel plate under direct vision. If the steel plate is placed eccentrically, that is, it is not placed in the center, stress concentration may occur, the screw and plate may break, the screw may loosen, the fracture may be delayed in healing, or it may not heal; eccentric placement of the steel plate may cause re-fracture around the prosthesis, or re-fracture after the internal fixation device is removed. Eccentric placement may also damage nerves, muscles, tendons, blood vessels, etc.; 4) Eccentric placement of the steel plate is often encountered in clinical practice. During the process of screwing in the screw, the compression and torsion of the screw and plate on the bone may cause the fracture reduction to be lost again, requiring repeated adjustments or leading to surgical failure.

[0003] Therefore, how to design an auxiliary device for centrally placing the steel plate becomes an urgent problem to be solved. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides an auxiliary device for centrally placing a steel plate to solve at least one of the above-mentioned technical problems.

[0005] The technical solution of the present invention is: an auxiliary device for centrally placing a steel plate, comprising symmetrically arranged double-joint bite forceps, the jaws of two double-joint bite forceps respectively clamp the bone cortex, a serrated locker is provided at the end of the handle of any double-joint bite forceps, and any double-joint bite forceps is provided with intermediate locking buckles arranged at intervals, the two intermediate locking buckles are arranged along the length direction of the double-joint bite forceps, sleeves are respectively provided on the two intermediate locking buckles, a ring is provided at one end of the two sleeves away from the double-joint bite forceps, a third sleeve is commonly provided in the two rings, the third sleeve is located on the center line of the double-joint bite forceps, the ends of the two third sleeves close to the jaws are installed on the center line of the long axis of the steel plate, and the steel plate is centrally placed in a small incision of the patient.

[0006] The present invention adopts a third sleeve located on the center line of the double-joint bite forceps and is installed on the center line of the long axis of the steel plate. The bone cortex is clamped by the jaws of two double-joint bite forceps respectively, and the steel plate is placed centrally in a small incision of the patient. The steel plate can be accurately placed in the center through a small incision, with less trauma, less bleeding, shortened operation time, greatly reduced number of fluoroscopy times, less impact of radiation on patients and medical staff, lower requirements on operators, saving time, improving the success rate of operations, and increasing patient satisfaction, thereby creating favorable conditions for surgical clinical work. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is the front view of the present invention.

[0008] Figure 2 It is a left view of the present invention.

[0009] Figure 3 It is the front view of the installation structure of the present invention.

[0010] In the figure: 1. Double-jointed biting pliers; 2. First sleeve; 3. Second sleeve; 4. Third sleeve; 5. Steel plate. DETAILED DESCRIPTION

[0011] The present invention will be further described below in conjunction with the accompanying drawings.

[0012] See also Figure 1-3The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

[0013] Embodiment 1: An auxiliary device for centrally placing a steel plate, referring to Figure 2 , Figure 3 , including symmetrically arranged double-joint bite forceps 1, the jaws of the two double-joint bite forceps 1 respectively clamp the cortical bone, and the end of the handle of any double-joint bite forceps 1 is provided with a serrated locker. When the jaws clamp the cortical bone, the serrated locker is lowered to prevent the jaws from loosening; any double-joint bite forceps 1 is provided with intermediate locking buckles arranged at intervals, and the two intermediate locking buckles are arranged along the length direction of the double-joint bite forceps 1, and sleeves are respectively provided on the two intermediate locking buckles, and a ring is provided at one end of the two sleeves away from the double-joint bite forceps 1, and a third sleeve 4 is jointly provided in the two rings, and the third sleeve 4 is located on the center line of the double-joint bite forceps 1, and the ends of the two third sleeves 4 close to the jaws are installed on the center line of the long axis of the steel plate 5, and the steel plate 5 is centrally placed in the small incision of the patient. The present invention adopts a third sleeve located on the center line of the double-joint bite forceps and is installed on the center line of the long axis of the steel plate. The jaws of the two double-joint bite forceps respectively clamp the cortical bone, thereby ensuring that the steel plate here is located on the bisector of the cortical bone clamped by the jaws. The steel plate is placed centrally in the patient's small incision, and the steel plate can be simply, quickly and accurately placed on the midline of the cortical bone without direct vision and fluoroscopy, ensuring that the proximal end and the distal end are both located on the midline of the cortical bone. The device can be used to achieve the central placement of the steel plate through a small incision, which is particularly suitable for fracture open reduction and internal fixation surgery using the Mippo technique. The surgery has small surgical trauma, simple and accurate operation, less bleeding, shortened operation time, greatly reduced the number of fluoroscopy times, reduced the impact of radiation on patients and medical staff, lower requirements on surgeons, saves time, avoids loss of reduction, improves surgery quality, improves surgery success rate, and improves patient satisfaction, creating favorable conditions for surgical clinical work.

[0014] Embodiment 2: Based on Embodiment 1, refer to Figure 1The two sleeves correspond to the first sleeve 2 and the second sleeve 3 respectively, and the first sleeve 2 and the second sleeve 3 are located on the center line of the double-jointed bite pliers 1. The present invention adopts that the first sleeve and the second sleeve are located on the center line of the double-jointed bite pliers, and the third sleeve is also located on the center line of the double-jointed bite pliers. The third sleeve is installed on the center line of the long axis of the steel plate, ensuring that the steel plate here is located on the bisector of the bone cortex clamped by the jaws.

[0015] Embodiment 3: Based on Embodiment 2, the center line of the long axis of the steel plate 5 is provided with a plurality of screw holes arranged at intervals; the end of the third sleeve 4 close to the steel plate 5 is provided with a threaded section, which is screwed into the corresponding screw hole. The present invention adopts the method of providing a threaded section at the end of the third sleeve close to the steel plate, and screwing the threaded section into the corresponding screw hole to install the third sleeve on the center line of the long axis of the steel plate, thereby ensuring that the steel plate is located on the bisector of the bone cortex clamped by the jaws.

[0016] Embodiment 4: Based on Embodiment 3, the first sleeve 2 has the same structure as the second sleeve 3, and one end of the first sleeve 2 close to the double-jointed bite pliers 1 is a pin, which is installed in the middle locking hole of the double-jointed bite pliers 1. The present invention adopts a first sleeve close to the double-jointed bite pliers as a pin, and the first sleeve and the second sleeve are installed on the center line of the double-jointed bite pliers.

[0017] In specific implementation, two double-jointed biting pliers 1 are often used simultaneously or one double-jointed biting pliers 1 is used twice.

[0018] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary device for centrally placing a steel plate, comprising symmetrically arranged double-jointed bite pliers (1), characterized in that: The jaws of the two double-jointed bite forceps (1) respectively clamp the bone cortex, and the end of the handle of any double-jointed bite forceps (1) is provided with a serrated locker. Any double-jointed bite forceps (1) is provided with intermediate lock buckles arranged at intervals, and the two intermediate lock buckles are arranged along the length direction of the double-jointed bite forceps (1). Sleeves are respectively provided on the two intermediate lock buckles, and a ring is provided at one end of the two sleeves away from the double-jointed bite forceps (1). A third sleeve (4) is commonly provided in the two rings, and the third sleeve (4) is located on the center line of the double-jointed bite forceps (1). The ends of the two third sleeves (4) close to the jaws are both installed on the center line of the long axis of the steel plate (5), and the steel plate (5) is centrally placed in the small incision of the patient.

2. The auxiliary device for centering a steel plate according to claim 1, characterized in that: The two sleeves correspond to the first sleeve (2) and the second sleeve (3) respectively, and the first sleeve (2) and the second sleeve (3) are located on the center line of the double-jointed bite pliers (1).

3. The auxiliary device for centering a steel plate according to claim 2, characterized in that: A plurality of screw holes arranged at intervals are provided on the center line of the long axis of the steel plate (5).

4. The auxiliary device for centering a steel plate according to claim 3, characterized in that: The third sleeve (4) is provided with a threaded section at one end close to the steel plate (5), and the threaded section is screwed into the corresponding screw hole.

5. The auxiliary device for centering a steel plate according to claim 3, characterized in that: The first sleeve (2) and the second sleeve (3) have the same structure. One end of the first sleeve (2) close to the double-jointed bite pliers (1) is a pin, which is installed in the middle locking hole of the double-jointed bite pliers (1).

Images