CN213697165U

CN213697165U - Three-dimensional positioning guiding internal fixer for treating ulna coronary fracture under arthroscope

Info

Publication number: CN213697165U
Application number: CN202022371002.5U
Authority: CN
Inventors: 金京日
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-10-22
Filing date: 2020-10-22
Publication date: 2021-07-16
Anticipated expiration: 2030-10-22

Abstract

The utility model discloses a three-dimensional positioning and guiding internal fixator for treating ulna coronal process fracture under arthroscope, relating to the technical field of medical instruments. The three-dimensional positioning and guiding internal fixator for treating ulna coronal fracture under arthroscope comprises a sleeve, a guide pin, a sliding arm, a groove type track, a positioning arm and a positioning part, wherein one end of the guide pin penetrates through the sleeve, the sleeve is in sliding connection with the guide pin, a connecting piece is arranged on the sleeve, the sleeve and the connecting piece are integrally formed, a side arm of the connecting piece is connected with the arc-shaped sliding arm, the groove type track is arranged in the sliding arm, the positioning arm is of an arc-shaped structure, the sliding arm and the positioning arm are in sliding connection through the groove type track, a scale mark is arranged on the sliding arm, the annular angle range of sliding of the positioning arm is 60-85 degrees, and the arc-shaped tail end of. The design can better reset the fracture and increase the sliding angle, so that the fracture can be positioned more easily, the operation mode is simplified, and the operation time is shortened.

Description

Three-dimensional positioning guiding internal fixer for treating ulna coronary fracture under arthroscope

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to three-dimensional positioning direction internal fixation ware of treatment ulna guan tu fracture under arthroscope.

Background

When the ulna coronal process fracture is reset and fixed under an arthroscope, the most used method at present is to use a cruciate ligament tibial positioner for auxiliary positioning, and realize a percutaneous fixing technology for the fracture broken end by means of a kirschner wire. The main problem of unsatisfactory effect of using the cruciate ligament tibia locator in the arthroscopic reduction process of ulna coronal fracture is that the cruciate ligament tibia locator is a point-to-point design concept of a single plane and is mainly used for locating knee joint cruciate ligament tibia lateral ligament insertion points, and the approach of an elbow arthroscope for ulna coronal fracture is that an elbow joint bends 90 degrees, the front inner side and the front outer side of the elbow joint are close to under the natural falling state of the forearm, the complicated anatomical structure of the elbow joint and the irregular anatomical form of the ulna coronal fracture are generally adopted, so that the cruciate ligament tibia locating instrument of the single plane is obviously limited in the aspect of accurate spatial positioning, reduction and stable holding force and the random selection of the annular angle (maximum 60 degrees) of the locator, a guide needle is easy to enter into an elbow joint cavity, and the functional exercise after operation and the stability of bone block fixation are influenced, the special complex situation cannot be adapted and satisfied finally; and because the ulna coronary fracture is smaller, no good instrument for assisting accurate positioning and resetting exists in the fixing process.

Disclosure of Invention

An object of the utility model is to provide a three-dimensional location direction internal fixation ware of treatment ulna guan tu fracture under arthroscope solves the problem among the background art.

In order to solve the technical problem, the utility model adopts the following technical scheme: a three-dimensional positioning and guiding internal fixator for treating ulna coronal fracture under arthroscope comprises a sleeve 1, a guide pin 2, a sliding arm 3, a groove type track 4, a positioning arm 5 and a positioning part 6, wherein one end of the guide pin 2 penetrates through the sleeve 1, the sleeve 1 is in sliding connection with the guide pin 2, a connecting part 101 is arranged on the sleeve 1, the sleeve 1 and the connecting part 101 are integrally formed, a side arm of the connecting part 101 is connected with the arc-shaped sliding arm 3, the groove type track 4 is arranged in the sliding arm 3, the positioning arm 5 is of an arc-shaped structure, the sliding arm 3 and the positioning arm 5 are in sliding connection through the groove type track 4, a scale mark is arranged on the sliding arm 3, the annular sliding angle range of the positioning arm 5 is 60-85 degrees, and the arc-shaped tail end of the positioning arm.

Further technical scheme is location portion 6 includes first linking arm 61, second linking arm 62, positioning head 63, location awl 64, constant head tank 65, first linking arm 61 is connected with positioning arm 5, the one end and the first linking arm 61 of second linking arm 62 are connected, the extension line and the first linking arm of second linking arm 62 form 40 contained angles, the tip of second linking arm 62 is provided with positioning head 63, location awl 64 and constant head tank 65 set up in positioning head 63, the most advanced sleeve 1 of orientation awl 64, the central axis of sleeve 1 and the central axis coincidence of constant head tank 65.

A further technical scheme is that the side wall of the sleeve 1 and the side wall of the sliding arm 3 are provided with locking screws 7.

Compared with the prior art, the beneficial effects of the utility model are that: the application provides a three-dimensional positioning direction internal fixation ware of treatment ulna guan tu fracture under arthroscope, through sleeve and guide pin sliding connection, and sliding arm and positioning arm pass through slot type track sliding connection, the gliding annular angle scope of positioning arm is 60-85, make fixed in-process make ke shi needle pass from the ulna as far as possible, reduced because of the not enough bone piece fixed condition of ke shi needle through articular surface that appears in the angle, and then, can fix a position and maintain simultaneously after the fracture broken end that directly resets in the operation, and need not to fix a position the fracture and then fix the fracture broken end through punching many times, it is low to the bone injury degree, and the in-process that punches has good guidance quality, the operation is more accurate, convenient. The design can better reset the fracture and increase the sliding angle, so that the fracture can be positioned more easily, the operation mode is simplified, and the operation time is shortened.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the positioning portion of the present invention.

Fig. 3 is another schematic structural diagram of the positioning portion of the present invention.

Fig. 4 is a perspective view of the positioning head of the present invention.

In the figure: 1-sleeve, 101-connecting piece, 2-guide pin, 3-sliding arm, 4-grooved track, 5-positioning arm, 6-positioning part, 61-first connecting arm, 62-second connecting arm, 63-positioning head, 64-positioning cone, 65-positioning groove and 7-locking screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the embodiments described herein are for illustrative purposes only and are not intended to limit the invention, which is to be construed as limited to the same extent as the drawings.

As shown in fig. 1-4, the three-dimensional positioning and guiding internal fixator for treating ulna coronal fracture under arthroscope comprises a sleeve 1, a guide pin 2, a sliding arm 3, a groove type track 4, a positioning arm 5 and a positioning part 6, wherein one end of the guide pin 2 penetrates through the sleeve 1, the sleeve 1 is in sliding connection with the guide pin 2, a connecting part 101 is arranged on the sleeve 1, the sleeve 1 and the connecting part 101 are integrally formed, a side arm of the connecting part 101 is connected with a circular arc-shaped sliding arm 3, the groove type track 4 is arranged in the sliding arm 3, the positioning arm 5 is of a circular arc-shaped structure, the sliding arm 3 and the positioning arm 5 are in sliding connection through the groove type track 4, a scale mark is arranged on the sliding arm 3, the annular angle range of the sliding of the positioning arm 5 is 60-85 degrees, and the circular arc-.

When the device is used, the positioning arm 5 in the sliding arm 3 is slid to a proper scale mark according to the specific situation of a patient, the positioning part can be adjusted to be positioned and clamped at a proper position through the sliding positioning arm 5, and after the patient wound is positioned and fixed, surgical repair is carried out along the wound area entering the patient through a surgical tool such as the guide needle 2; the locator can be better fixed at the patient wound through the marks of the scale marks. The arc-shaped end of the positioning arm 5 is bent inwards and forms an included angle of 40 degrees with the tangent of the top end of the positioning arm 5. The design mainly adopts the principle of combining the concentric circle theory with the three-dimensional space positioning and utilizes the groove type sliding mode to ensure the accuracy of the pre-channel positioning. The angle of the groove type slideway is more than or equal to 60 degrees and less than or equal to 80 degrees, so that the kirschner wire can penetrate through the ulna as far as possible in the fixing process, and the condition that the kirschner wire is fixed by bone blocks on the articular surface due to insufficient angle is reduced. Furthermore, the fracture end can be positioned and maintained to be reset simultaneously after being directly reset in the operation, the fracture is positioned without punching for many times, the fracture end is fixed, the injury degree to the bone is low, good guidance is provided in the punching process, and the operation is more accurate and convenient.

Location portion 6 includes first linking arm 61, second linking arm 62, location head 63, location awl 64, constant head tank 65, first linking arm 61 and location arm 5 are connected, the one end and the first linking arm 61 of second linking arm 62 are connected, the extension line and the first linking arm of second linking arm 62 form 40 contained angles, the tip of second linking arm 62 is provided with location head 63, location awl 64 and constant head tank 65 set up in location head 63, location awl 64 is most advanced towards sleeve 1, the central axis of sleeve 1 and the central axis coincidence of constant head tank 65. As shown in fig. 2, the second connecting arm and the first connecting arm are bent to the left to form an included angle of 140 °, and the extension line of the second connecting arm 62 and the first connecting arm form an included angle of 40 °; as shown in fig. 3, the second connecting arm and the first connecting arm are bent to the right to form an included angle of 140 °, and the extension line of the second connecting arm 62 and the first connecting arm form an included angle of 40 °; because the elbow joint is left and right sides, the adaptability in the location process has been strengthened to two kinds of using methods that location portion 6 was crooked to left and right sides respectively for the location is more accurate. The location head 63 is the water droplet form, and the location awl 64 can be at the antiskid anticreep when the contact injury person hinders the department, and the constant head tank 65 is circular recess, and the central axis of guide pin 2 makes the location of hindering the department to the patient more accurate with the central axis coincidence design of constant head tank 65 mutually.

And locking screws 7 are arranged on the side wall of the sleeve 1 and the side wall of the sliding arm 3. When the device is used, the guide pin 2 is moved to a proper position, the locking screw 7 is matched with the threaded hole, the locking screw 7 penetrates through the sleeve 1, and the guide pin 2 and the sleeve 1 are pressed and fixed, so that the guide pin 2 is prevented from moving again, and the accuracy of the operation is prevented from being influenced; slide the location arm 5 to suitable position department, locking screw 7 and screw hole cooperation, locking screw 7 passes slide arm 3, compresses tightly fixed with slide arm 3 and location arm 5 to avoid slide arm 3 to remove once more, guarantee the accuracy of location.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. A three-dimensional positioning guiding internal fixator for treating ulna coronal process fracture under arthroscope is characterized in that: the three-dimensional positioning and guiding fixer comprises a sleeve (1), a guide pin (2), a sliding arm (3), a groove type track (4), a positioning arm (5) and a positioning part (6), one end of the guide pin (2) penetrates through the sleeve (1), the sleeve (1) is in sliding connection with the guide pin (2), the connecting piece (101) is arranged on the sleeve (1), the sleeve (1) and the connecting piece (101) are integrally formed, a side arm of the connecting piece (101) is connected with a circular arc-shaped sliding arm (3), a groove type track (4) is arranged in the sliding arm (3), the positioning arm (5) is of a circular arc-shaped structure, the sliding arm (3) and the positioning arm (5) are in sliding connection through the groove type track (4), scale marks are arranged on the sliding arm (3), the sliding annular angle range of the positioning arm (5) is 60-85 degrees, and a positioning portion (6) is arranged at the circular arc-shaped tail end of the.

2. The arthroscopic three-dimensional positioning and guiding internal fixator for treating ulnar crown fracture according to claim 1, which is characterized in that: location portion (6) include first linking arm (61), second linking arm (62), location head (63), location awl (64), constant head tank (65), first linking arm (61) and location arm (5) are connected, the one end and first linking arm (61) of second linking arm (62) are connected, the extension line and the first linking arm of second linking arm (62) form 40 contained angles, the tip of second linking arm (62) is provided with location head (63), location awl (64) and constant head tank (65) set up on location head (63), location awl (64) are most advanced towards sleeve (1), the central axis of sleeve (1) and the central axis coincidence of constant head tank (65).

3. The arthroscopically three-dimensional positioning and guiding internal fixator for treating ulnar crown fracture according to claim 2, wherein: and the side wall of the sleeve (1) and the side wall of the sliding arm (3) are provided with locking screws (7).