CN212592380U

CN212592380U - Ball head ejector rod

Info

Publication number: CN212592380U
Application number: CN202020112688.3U
Authority: CN
Inventors: 傅德皓; 肖宝钧; 刘松相; 李锐; 刘国辉; 杨述华
Original assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Current assignee: Union Hospital Tongji Medical College Huazhong University of Science and Technology
Priority date: 2020-01-17
Filing date: 2020-01-17
Publication date: 2021-02-26
Anticipated expiration: 2030-01-17

Abstract

The utility model discloses a bulb ejector pin, including ball section, pole body section and handle section, ball section front end has coniform tip, and ball section rear end is connected and both are Z type structure with pole body section front end, and pole body section rear end is connected with handle section one end, is equipped with the guiding hole that runs through both ends around it in the ball section, and the guiding hole is used for imbedding the bone nail, be equipped with the side fluting that runs through guiding hole pore wall and ball section outer wall in the ball section, the grooved width of side is not less than the diameter of guiding hole. Compared with the prior art, the guide hole for placing the bone nail is additionally arranged in the ball-head ejector rod, the ball-head section and the rod body section are integrally designed into a Z-shaped structure, so that the operation space for placing the bone nail is reserved, the ball-head ejector rod integrates the functions of resetting and guiding, the step for placing the bone nail is simplified, and the accuracy for placing the bone nail is improved.

Description

Ball head ejector rod

Technical Field

The utility model relates to the technical field of orthopedic medical equipment, in particular to a ball head ejector rod.

Background

The ball-head ejector rod is a common instrument in orthopedic surgery and is structurally characterized in that a straight rod with a ball head is arranged at the front end of the straight rod, and a conical tip is arranged at the front end of the ball head. In the fracture reduction operation, the ball-head ejector rod is used for tightly ejecting the bone surface to realize reduction, and then the bone nail is placed to finish the fixation. The inventor of the department of science finds in clinical operation that the steps of the fracture reduction operation are too complicated, the operation time is prolonged, and the ball-head ejector rod occupies the optimal needle inserting point and influences the angle for inserting the bone nail, so that the traditional ball-head ejector rod needs to be improved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to prior art current situation, provide a bulb ejector pin, make bulb ejector pin collection reset and guide function in an organic whole, simplified the step that the bone nail was put into, improved the precision that the bone nail was put into.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a bulb ejector pin, includes bulb section, rod body section and handle section, bulb section front end has coniform tip, and bulb section rear end is connected and both are Z type structure with rod body section front end, and rod body section rear end is connected with handle section one end, is equipped with the guiding hole that runs through its front and back both ends in the bulb section, and the guiding hole is used for imbedding the bone nail.

Furthermore, a side open groove penetrating through the hole wall of the guide hole and the outer wall of the ball head section is formed in the ball head section, and the width of the side open groove is not smaller than the diameter of the guide hole.

Furthermore, the rod body section is in a Z-shaped structure after being connected with the handle section.

Further, still include the deflector, the deflector is connected for dismantling with the bulb section, and the deflector is connected the back with the bulb section, and the deflector is on a parallel with the bulb section and has the clearance between the two.

Furthermore, be equipped with the cradling piece on the deflector, the one end that the cradling piece kept away from the deflector extends to handle segment department.

Furthermore, the guide plate is in plug-in connection with the ball head section.

The utility model has the advantages that:

1. compared with the prior art, the guide hole for placing the bone nail is additionally arranged in the ball-head ejector rod, and the ball-head section and the rod body section are integrally designed into a Z-shaped structure, so that the operation space for placing the bone nail is reserved, the ball-head ejector rod integrates the functions of resetting and guiding, the step of placing the bone nail is simplified, and the accuracy of placing the bone nail is improved;

2. add the deflector that can dismantle the connection on the bulb ejector pin, in the bone face department that tends to the plane, deflector and this department's bone face laminating, and then guarantee that the guiding hole is parallel with this department's bone face, avoid the bone nail to beat askewly, reduced the operation risk.

Drawings

Fig. 1 is a schematic structural view of a ball-end ejector rod in embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a ball head section in embodiment 1 of the present invention;

fig. 3 is a schematic structural view of a ball-end ejector rod in embodiment 2 of the present invention;

fig. 4 is a schematic structural diagram of the ball head section in embodiment 2 of the present invention.

Description of the labeling: 1. the ball head section 2, the rod body section 3, the handle means 4, the guide hole 5, the side slot 6, the guide plate 7, the support rod 8 and the slot.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Example 1:

referring to fig. 1-2, a ball-end ejector comprises a ball-end section 1, a rod-body section 2 and a handle section 3, wherein the front end of the ball-end section 1 is provided with a conical tip, the rear end of the ball-end section 1 is connected with the front end of the rod-body section 2, the ball-end section and the rod-body section are in a Z-shaped structure, the rear end of the rod-body section 2 is connected with one end of the handle section 3, a guide hole 4 penetrating through the front end and the rear end of the ball-end section 1 is formed in the ball-end section 1, and. Compare in prior art, add the guiding hole 4 of putting into the bone nail in its bulb ejector pin to with bulb section 1 and body of rod section 2 global design for Z type structure, thereby reserve the operating space of putting into the bone nail, make the bulb ejector pin collect reset and guide function in an organic whole, simplified the step that the bone nail was put into, improved the precision that the bone nail was put into.

Preferably, the ball head section 1 is provided with a side open groove 5 penetrating through the inner wall of the guide hole 4 and the outer wall of the ball head section 1, and the width of the side open groove 5 is not less than the diameter of the guide hole 4. After the bone nail is placed in, the ball-head ejector rod is moved towards the opposite side of the side opening groove 5, so that the ball-head ejector rod can be quickly removed, and the ball-head ejector rod and the placed bone nail are not interfered with each other when the ball-head ejector rod is removed.

Preferably, the rod section 2 is connected with the handle section 3 to form a Z-shaped structure. The effect that is Z type structure after 1 rear end of bulb section and 2 front ends of body of rod section are connected lies in reserving the operating space who puts into the bone nail, because internal space restriction, this space still has the limitation, when handheld bulb ejector pin, very easily takes place the interference with the bone nail, and body of rod section 2 is Z type structure after being connected with handle section 3, makes handle section 3 further keep away from bulb section 1 in vitro to above problem has been avoidd.

Example 2:

referring to fig. 3-4, in the above technical solution, the ball head assembly further includes a guide plate 6, the guide plate 6 is detachably connected to the ball head section 1, and after the guide plate 6 is connected to the ball head section 1, the guide plate 6 is parallel to the ball head section 1 and a gap is formed therebetween. Add the deflector 6 that can dismantle the connection on the bulb ejector pin, in the bone face department that tends to the plane, deflector 6 and the laminating of this department bone face, and then guarantee that guiding hole 4 is parallel with this department bone face, avoid the bone nail to beat askewly, touch the judgement with the hand and compare, easily operate, the operation risk is lower.

Preferably, the guide plate 6 is provided with a support rod 7, one end of the support rod 7, which is far away from the guide plate 6, extends to the handle 3, the side wall of the ball head section 1 is provided with a slot 8, and the guide plate 6 is in plug connection with the ball head section 1. The guide plate 6 can be quickly removed by the support rod 7 in preparation for insertion of the bone screw.

Of course, the above is only the preferred embodiment of the present invention, and the application range of the present invention is not limited thereto, so all the equivalent changes made in the principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball head ejector rod is characterized in that: including ball section, rod body section and handle section, ball section front end has coniform tip, and ball section rear end is connected and both are Z type structure with rod body section front end, and rod body section rear end is connected with handle section one end, is equipped with the guiding hole that runs through its front and back both ends in the ball section, and the guiding hole is used for imbedding the bone nail.

2. A ball nose kicker as claimed in claim 1, wherein: the ball head section is provided with a side open groove which penetrates through the hole wall of the guide hole and the outer wall of the ball head section, and the width of the side open groove is not less than the diameter of the guide hole.

3. A ball nose top bar according to claim 1 or 2, wherein: the rod body section is of a Z-shaped structure after being connected with the handle section.

4. A ball nose kicker as claimed in claim 3, wherein: still include the deflector, the deflector is connected for dismantling with the bulb section, and the back is connected with the bulb section to the deflector, and the deflector is on a parallel with the bulb section and has the clearance between the two.

5. A ball nose kicker as claimed in claim 4, wherein: be equipped with the cradling piece on the deflector, the one end that the cradling piece kept away from the deflector extends to handle segment department.

6. A ball nose kicker as claimed in claim 5, wherein: the guide plate is in plug connection with the ball head section.