Quick insertion type medullary cavity file punching and pulling device

Abstract

The utility model relates to the field of medullary cavity files, in particular to a quick-insertion type medullary cavity file beating and pulling device, which is characterized in that one end of a rod body is provided with a mounting groove, one side of the middle of the mounting groove is provided with an insertion hole to be butted with a file body, the other side of the middle of the mounting groove is rotatably provided with a locking block, one side of the locking block is provided with a pair of insertion blocks, and the insertion blocks are used for locking the file body. According to the utility model, the file body can be quickly inserted into and butted with the rod body through the insertion rod, the insertion rod can be quickly tensioned and limited by rotating the locking block, and meanwhile, the locking block is locked and clamped through the insertion groove, the convex block and other components after rotating to a corresponding position, so that the whole connection and locking process is convenient and quick, and quick insertion type connection is realized; and the replacement operation efficiency of the file body is improved.

Description

Technical Field

[0001] This utility model relates to the field of medullary canal file technology, and in particular to a quick-insertion medullary canal file extraction device. Background Technology

[0002] A medullary reamer is used to enlarge and trim the medullary cavity, commonly used in hip replacement or intramedullary nailing surgeries to ensure that the implant (such as an artificial joint stem or intramedullary nail) fits the bone cavity.

[0003] In practical applications, the medullary canal file is usually connected to the extraction tool for easy operation, such as striking or rotating. Existing traditional extraction tools need to be connected to the medullary canal file via threads, which increases the time for changing tools during actual operation and affects the operation. Therefore, there is an urgent need for a quick-connect medullary canal file extraction tool. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-insertion medullary cavity file and puller.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A quick-insertion medullary canal file and extractor includes a rod body. One end of the rod body has an installation groove. One side of the middle part of the installation groove has an insertion hole for connecting the file body, and a locking block is rotatably installed on the other side. One side of the locking block has a pair of insertion blocks for locking the file body.

[0007] A limiting groove is provided in the middle of one side of the locking block. A protrusion is installed in the limiting groove. One end of the protrusion extends out of the limiting groove, and the top of the protrusion passes through the upper wall of the locking block and is fitted with a push block.

[0008] In addition, a preferred structure is that one end of the rod is provided with a striking platform.

[0009] In addition, a preferred structure is that one end of the rod is provided with a mating groove, which fits and engages with the outer wall of the file, and an insertion hole is provided in the middle of the mating groove.

[0010] In addition, a preferred configuration is that a torsion spring is provided at the rotatable connection between the locking block and the mounting groove.

[0011] In addition, a preferred structure is that one end of the file body is provided with a plug rod to mate with the plug hole, and the middle part of the plug rod is provided with an annular groove, which is engaged with the plug block.

[0012] Furthermore, in a preferred configuration, the inner side of the insert is arc-shaped, and the bottom wall of the insert is inclined outward. When the insert is connected to the annular groove, the inclined surface of the bottom wall of the insert is pressed into contact with the bottom wall of the annular groove.

[0013] In addition, a preferred structure is that the top of the limiting groove has a through opening for mounting the push block.

[0014] In addition, a preferred structure is that a spring is installed in the limiting groove, and the other end of the spring is connected to the protrusion.

[0015] In addition, a preferred structure is that a slot is provided on the upper side of the mounting groove, and the slot and the protrusion are mating structures.

[0016] The beneficial effects of this utility model are as follows:

[0017] In this invention, the file body can be quickly inserted into the rod body via the insertion rod, and the locking block can be rotated to quickly tighten and limit the insertion rod. At the same time, after the locking block is rotated to the corresponding position, it is locked and engaged through components such as slots and protrusions. The overall connection and locking process is convenient and quick, realizing a quick-connect connection and improving the efficiency of file body replacement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the external structure of a quick-insertion medullary cavity file and puller proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the mounting groove proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the external structure of the locking block proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the protrusion mounting structure proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the insertion rod docking structure proposed in this utility model;

[0023] Figure 6 This is a schematic diagram of the side structure of the insert block proposed in this utility model.

[0024] In the diagram: 1. Rod body; 11. Striking platform; 12. Connecting groove; 13. Insertion hole; 2. File body; 21. Insert rod; 22. Annular groove; 3. Locking block; 4. Mounting groove; 41. Slot; 5. Protrusion; 51. Push block; 6. Inserting block; 7. Spring; 9. Torsion spring; 10. Limiting groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Reference Figure 1-6A quick-insertion medullary canal file and extractor includes a rod body 1. One end of the rod body 1 is provided with an installation groove 4. One side of the middle part of the installation groove 4 is provided with an insertion hole 13 to connect with the file body 2, and a locking block 3 is rotatably installed on the other side. One side of the locking block 3 is provided with a pair of insertion blocks 6, which are used to lock the file body 2.

[0027] Furthermore, a limiting groove 10 is provided in the middle of one side of the locking block 3, and a protrusion 5 is installed in the limiting groove 10. One end of the protrusion 5 extends out of the limiting groove 10, and the top of the protrusion 5 protrudes through the upper wall of the locking block 3 and is fitted with a push block 51.

[0028] One end of the rod 1 is provided with a striking platform 11.

[0029] One end of the rod 1 is provided with a docking groove 12, which fits and engages with the outer wall of the file 2. A insertion hole 13 is provided in the middle of the docking groove 12.

[0030] A torsion spring 9 is provided at the rotatable connection between the locking block 3 and the mounting groove 4. The torsion spring 9 provides a torsional force that keeps the locking block 3 rotating outward.

[0031] One end of the file 2 is provided with a plug rod 21 to mate with the plug hole 13, and the middle part of the plug rod 21 is provided with an annular groove 22, which is engaged with the plug block 6. The file 2 is inserted and connected to the rod 1 through the plug rod 21.

[0032] The inner side of the insert 6 is arc-shaped, and the bottom wall of the insert 6 is inclined to the outside. When the insert 6 is connected with the annular groove 22, the inclined surface of the bottom wall of the insert 6 is pressed and contacted with the bottom wall of the annular groove 22.

[0033] The top of the limiting groove 10 has a through opening for mounting the push block 51. The push block 51 moves through the slot and moves synchronously with the protrusion 5.

[0034] A spring 7 is installed in the limiting groove 10. The other end of the spring 7 is connected to the protrusion 5. When the protrusion 5 moves, the spring 7 deforms.

[0035] A slot 41 is provided on the upper side of the mounting groove 4, and the slot 41 and the protrusion 5 are connected to each other.

[0036] In this embodiment, during the installation of the file body 2, the insertion rod 21 on one side of the file body 2 is inserted into the insertion hole 13 opened on one side of the rod body 1, and the insertion rod 21 is inserted into the mounting groove 4. At this time, the file body 2 is limited by the docking groove 12 and the insertion hole 13.

[0037] When the locking block 3 is pressed down, a pair of inserts 6 at the bottom of the locking block 3 enter the mounting groove 4 and mate with the rod 21 inserted into the mounting groove 4. The inserts 6 mate with the annular groove 22 on the outside of the rod 21, which serves as a front and rear limiting effect. As the locking block 3 continues to rotate, the inclined bottom surface of the inserts 6 presses against the bottom wall of the annular groove 22. The displacement caused by the pressing causes the rod 21 to shift further into the mounting groove 4, which serves as a tightening effect on the rod 21. When the locking block 3 rotates to the corresponding position, the inserts 6 at the top of the locking block 3 are inserted into the slot 41, completing the rotation locking function of the locking block 3.

[0038] In practical application, as the locking block 3 rotates toward the mounting groove 4, the protrusion 5 presses against the upper wall of the mounting groove 4, and the protrusion 5 moves inward under force. When the protrusion 5 moves to the position of the slot 41, the spring 7 returns to its original position and pushes the protrusion 5 into the slot 41 to complete the locking.

[0039] In practical applications, the push block 51 can simultaneously drive the protrusion 5 to move. The protrusion 5 is limited to the movement in the limiting groove 10. By pulling the push block 51 inward, the protrusion 5 is simultaneously driven to move inward into the limiting groove 10 and disengage from the slot 41.

[0040] In practical applications, the inner side of the insert 6 is arc-shaped. The arc design can improve the smoothness of docking with the insert rod 21. The bottom wall of the insert 6 is inclined to the outside. When the insert 6 docks with the annular groove 22, the inclined surface of the bottom wall of the insert 6 is pressed and contacted with the bottom wall of the annular groove 22. The insert rod 21 is displaced by the compression of the insert 6, thus achieving a tightening effect.

[0041] During the installation of file 2, simply insert the insert rod 21 into rod 1 and lock it in place using locking block 3. Locking block 3 can tighten and limit the insert rod 21, ensuring the stability of its installation and enabling quick insertion and locking.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick plug broach extractor comprising a shaft (1), characterized in that, One end of the rod body (1) is provided with a mounting slot (4), the middle of the mounting slot (4) is provided with a insertion hole (13) to butt joint the file body (2), and the other side is rotatably provided with a locking block (3), one side of the locking block (3) is provided with a pair of insertion blocks (6), the insertion blocks (6) are used for locking the file body (2). The middle of one side of the locking block (3) is provided with a limiting slot (10), the limiting slot (10) is provided with a protruding block (5) in limiting mode, one end of the protruding block (5) extends out of the limiting slot (10), and the top of the protruding block (5) extends out of the upper wall of the locking block (3) and is provided with a push block (51).

2. A quick plug broach extractor according to claim 1, wherein, One end of the rod body (1) is provided with a knocking table (11).

3. The quick plug type intramedullary reamer driver according to claim 1, wherein, One end of the rod body (1) is provided with a butt joint slot (12), the butt joint slot (12) is matched and clamped with the outer wall of the file body (2), and the middle of the butt joint slot (12) is provided with an insertion hole (13).

4. The quick plug type intramedullary reamer driver according to claim 1, wherein, The rotating connection part of the locking block (3) and the mounting slot (4) is provided with a torsion spring (9).

5. The quick plug type intramedullary reamer driver according to claim 1, wherein, One end of the file body (2) is provided with an insertion rod (21) to butt joint the insertion hole (13), and the middle of the insertion rod (21) is provided with an annular slot (22), the annular slot (22) is correspondingly clamped with the insertion block (6).

6. The quick plug type intramedullary reamer driver according to claim 1, wherein, The inner side of the insertion block (6) is provided in arc shape, the bottom wall of the insertion block (6) is inclined to the outer side, and when the insertion block (6) is butt jointed with the annular slot (22), the bottom wall inclined surface of the insertion block (6) is in extrusion contact with the bottom wall of the annular slot (22).

7. The quick plug reamer and extractor according to claim 1, wherein, The top of the limiting slot (10) is provided with a slot opening to assemble the push block (51).

8. The quick plug reamer and extractor according to claim 1, wherein, The limiting slot (10) is provided with a spring (7), and the other end of the spring (7) is connected with the protruding block (5).

9. The quick plug reamer and extractor according to claim 1, wherein, One side of the upper part of the mounting slot (4) is provided with an insertion slot (41), and the insertion slot (41) and the protruding block (5) are in butt joint structure.

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