CN113662648A - Intramedullary needle matching device - Google Patents

Abstract

The invention discloses an intramedullary pin matching device which comprises a multifunctional screwdriver, wherein a pull rod is arranged on the inner side of the multifunctional screwdriver, the two ends of the pull rod extend out of the multifunctional screwdriver, a quick-assembly handle is installed at the front end of the multifunctional screwdriver, a pressurizing sleeve is further in threaded connection with the middle end of the multifunctional screwdriver, the multifunctional screwdriver is tightly fastened with a sighting frame through a clamping block by adopting a locking bolt, the other end of the sighting frame is sleeved on a drill guide sleeve, the drill guide sleeve is arranged on the screw locking screwdriver, a positioning column is arranged at one end, close to the multifunctional screwdriver, of the sighting frame, the sighting frame is inserted into a positioning hole through the positioning column and is installed on the multifunctional screwdriver through the locking bolt locking hole of the clamping block, one end, close to the drill guide sleeve, of the sighting frame is provided with a guide hole, and the guide hole is sleeved on the drill guide sleeve. The multifunctional screwdriver integrates nail holding, nail rotating, orientation, pressurization and aiming rod, and is directly connected with the aiming frame for punching, placing and locking after the intramedullary nail is placed, so that the multifunctional screwdriver is convenient and quick to operate.

Description

Intramedullary needle matching device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an intramedullary needle matching device.

Background

The clavicle is S-shaped and arranged between the sternum handle and the acromion, and is the only bone bracket for connecting the upper limb and the trunk. The clavicle is positioned under the skin and superficial, and is easy to fracture under the action of external force, and the incidence rate of the clavicle accounts for 5% -10% of that of the fracture of the whole body. It is most common in children and young and old.

The surgical methods for clavicle fracture are divided into two categories: the first is internal fixation of the kirschner wire; the second is the internal fixation of the screw of the clavicle cutting reduction steel plate. The first internal fixation of the clavicle fracture kirschner wire has the advantages of simple operation, small wound, small incision, no need of incision, only the fixation of the kirschner wire on the outer side of the skin, and belongs to the category of minimally invasive surgery. However, the defects are that the fixation is not firm, the withdrawal of the kirschner wire is easily caused, even the internal fixation object is loosened and failed, the incidence rate of nonunion is high, and the early functional exercise cannot be performed after the operation. The current mainstream treatment scheme is to perform incision and reduction of the clavicle to reconstruct the internal fixation of a steel plate or an anatomical steel plate screw. Because the clavicle steel plate is designed according to the S shape of the clavicle, the clavicle steel plate has good fitting performance and is very firm after being fixed. And the clinical application of the titanium material accords with the biomechanics principle. Postoperative complications are greatly reduced. Is the current gold standard for treating clavicle fracture. The biggest disadvantages are that the wound is large, the scar formation affects the beauty, and young patients need to take out the internal fixation by secondary operations. Significantly increasing pain and economic and psychological burdens.

Disclosure of Invention

The invention aims to provide a matching device of an intramedullary nail, which integrates nail holding, nail rotating, orientation, pressurization and a sighting rod into a whole, the intramedullary nail is directly connected with a sighting frame for punching, placing and locking after being placed, the operation is convenient and fast, and the problems in the prior art can be solved.

In order to achieve the purpose, the invention provides the following technical scheme: a intramedullary pin matching device comprises a multifunctional screwdriver, wherein a pull rod is arranged on the inner side of the multifunctional screwdriver, the two ends of the pull rod extend out of the multifunctional screwdriver, a quick-assembly handle is installed at the front end of the multifunctional screwdriver, a pressurizing sleeve is further in threaded connection with the middle end of the multifunctional screwdriver, the multifunctional screwdriver is fastened with a sighting frame through a clamping block by adopting a locking bolt, the other end of the sighting frame is sleeved on a drill guiding sleeve, and the drill guiding sleeve is arranged on a nail locking screwdriver;

the multifunctional screwdriver is characterized in that a connecting structure is arranged at the tail end of the multifunctional screwdriver, an orientation table is arranged at the front end of the connecting structure, an external thread A is arranged at the middle end of the multifunctional screwdriver, the multifunctional screwdriver is connected with a pressurizing sleeve through the external thread A in a threaded manner, a quick-assembly structure is arranged at the front end of the multifunctional screwdriver, a quick-assembly handle is mounted on the quick-assembly structure, a positioning hole and a locking hole are formed in one section of the multifunctional screwdriver, which is provided with a sighting frame, the positioning hole and the locking hole are distributed laterally, and a through hole for inserting a pull rod is further formed in the multifunctional screwdriver;

the tail end of the pull rod is provided with an external thread B, the front end of the pull rod is provided with a knurl, and the tail end of the knurl is provided with a limiting step;

the one end that the aiming frame is close to multi-functional screwdriver is provided with the reference column, the aiming frame inserts in the locating hole through the reference column and adopts locking bolt locking hole to install on multi-functional screwdriver through the fixture block, the one end that the aiming frame is close to leading the drill bushing is provided with the guiding hole, the guiding hole cover is on leading the drill bushing.

Preferably, the connecting structure is in a plum blossom shape or a hexagonal shape.

Preferably, the fast-assembling structure comprises a flat position and an arc groove.

Preferably, the positioning hole and the orientation table form an included angle of 180 degrees.

Preferably, the outer circumferential surface of the front end of the pressurizing sleeve is provided with knurls, and the knurls are in a straight line or a net text shape.

Preferably, the axial position and angle of the guide hole are concentric and parallel to the axial line of the assembled intramedullary nail locking hole.

Compared with the prior art, the invention has the following beneficial effects:

the intramedullary pin matching device provided by the invention has the advantages that the multifunctional screwdriver integrates nail holding, nail rotating, orientation, pressurization and aiming rod, the intramedullary pin is directly connected with the aiming frame for punching, placing and locking after being placed, and the operation is convenient and fast.

Drawings

Fig. 1 is a schematic view of an intramedullary needle mating device of the present invention;

FIG. 2 is a schematic view of the multi-function screwdriver of the present invention;

FIG. 3 is a cross-sectional view taken along line A-A of the present invention;

FIG. 4 is a schematic view of a tie rod of the present invention;

fig. 5 is a schematic view of the aiming block of the present invention.

In the figure: 1. a multifunctional screwdriver; 101. a connecting structure; 102. an orientation stage; 103. an external thread A; 104. a quick-mounting structure; 105. positioning holes; 106. a locking hole; 107. a through hole; 2. a pull rod; 201. an external thread B; 202. a limiting step; 203. knurling; 3. a handle is quickly installed; 4. a pressurizing sleeve; 5. a sighting frame; 501. a positioning column; 502. a guide hole; 6. a clamping block; 7. locking the bolt; 8. a drill guide sleeve; 9. a screw driver for locking nails.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, an intramedullary pin matching device comprises a multifunctional screwdriver 1, a pull rod 2 is arranged on the inner side of the multifunctional screwdriver 1, two ends of the pull rod 2 extend out of the multifunctional screwdriver 1, a quick-assemblinghandle 3 is arranged at the front end of the multifunctional screwdriver 1, a pressurizing sleeve 4 is further in threaded connection with the middle end of the multifunctional screwdriver 1,knurls 203 are arranged on the outer circumferential surface of the front end of the pressurizing sleeve 4, theknurls 203 are straight or in a net shape, an inner thread is arranged in an inner hole at the near end of the pressurizing sleeve 4, the pressurizing sleeve 4 is arranged in front of the intramedullary pin, the pressurizing sleeve 4 is in threaded connection with the multifunctional screwdriver 1, after the intramedullary pin is arranged in the intramedullary pin, the pressurizing sleeve 4 is rotated to press the fracture end of the front top fracture, a sighting frame 5 is fastened by a clamping block 6 through a locking bolt 7, after the sighting frame 5 is assembled with the multifunctional screwdriver 1, the clamping block 6 clamps the sighting frame 5 and the multifunctional screwdriver 1, the other end of the aiming frame 5 is sleeved on thedrill guide sleeve 8, after the aiming frame 5 is assembled, thedrill guide sleeve 8 is inserted into aguide hole 502 in the aiming frame 5 for guiding, thedrill guide sleeve 8 is arranged on the locking screw driver 9, and the locking screw driver 9 is connected with the locking screw and then is arranged in the locking screw along a through hole groove of thedrill guide sleeve 8.

Referring to fig. 2-3, the tail end of the multifunctional screwdriver 1 is provided with a connectingstructure 101, the connectingstructure 101 is in a plum-blossom shape or a hexagonal shape and is used for screwing in or screwing out an intramedullary needle, the front end of the connectingstructure 101 is provided with adirectional platform 102, the middle end of the multifunctional screwdriver 1 is provided with an external thread a103, the multifunctional screwdriver 1 is in threaded connection with a pressurizing sleeve 4 through the external thread a103, the front end of the multifunctional screwdriver 1 is provided with a quick-assemblingstructure 104, the quick-assemblingstructure 104 is composed of a flat position and an arc groove, a quick-assemblinghandle 3 is installed on the quick-assemblingstructure 104, the quick-assemblingstructure 104 can be connected with the quick-assemblinghandle 3 and is used for adjusting the angle of the intramedullary needle, one section of the multifunctional screwdriver 1 is provided with apositioning hole 105 and alocking hole 106, thepositioning hole 105 and thedirectional platform 102 form an included angle of 180 degrees, the angle of the intramedullary needle can be adjusted by observing thepositioning hole 105 of the multifunctional screwdriver 1 in vitro, thepositioning hole 105 and thelocking hole 106 are distributed at the opposite side, thepositioning hole 105 is used for connecting the aiming block 5, thelocking hole 106 is used for locking the aiming block 5, and the multifunctional screwdriver 1 is further provided with athrough hole 107 for inserting the pull rod 2.

Referring to fig. 4, the tail end of the pull rod 2 is provided with an external thread B201, the pull rod 2 is connected to the intramedullary nail after passing through the throughhole 107 at the center of the multifunctional screwdriver 1 to play a role of holding, the front end of the pull rod 2 is provided with aknurl 203, theknurl 203 plays a role of anti-skidding when being locked or loosened, the tail end of theknurl 203 is provided with alimiting step 202, and after the external thread B201 is connected with the intramedullary nail, thelimiting step 202 is attached to the end surface of the head of the multifunctional screwdriver 1 to tighten the intramedullary nail.

Referring to fig. 5, one end of the aiming block 5 close to the multifunctional screwdriver 1 is provided withpositioning columns 501, the aiming block 5 is inserted into thepositioning holes 105 through thepositioning columns 501 and is locked and installed on the multifunctional screwdriver 1 through the clamping blocks 6 by the locking bolts 7, the number and the size of thepositioning columns 501 are matched with those of thepositioning holes 105, one end of the aiming block 5 close to thedrill guide sleeve 8 is provided with aguide hole 502, theguide hole 502 is sleeved on thedrill guide sleeve 8, and the axial position and the angle of theguide hole 502 are concentric and parallel to the axial line of the assembled intramedullarynail locking hole 106.

The working principle is as follows: aligning an orientation platform 102 at the tail end of a multifunctional screwdriver 1 with an intramedullary nail positioning groove, inserting a hexagonal or plum blossom-shaped connecting structure 101 arranged on the multifunctional screwdriver 1 into an intramedullary nail, inserting a pull rod 2 into the intramedullary nail along a through hole 107 at the center of the multifunctional screwdriver 1, holding a knurling 203 at the head of the pull rod 2 to screw an external thread B201 at the tail end of the pull rod 2 into the intramedullary nail clockwise until a limit step 202 of the pull rod 2 is attached to the end surface of the head of the multifunctional screwdriver 1, connecting an electric tool to clamp the head of the multifunctional screwdriver 1, placing the intramedullary nail along a nail feeding point and an angle, observing the placing depth of the intramedullary nail in a perspective manner, placing the tail end of the intramedullary nail into opposite cortical bone at the fracture end of a clavicle, stopping pushing, taking off the electric tool, connecting a fast-assembling handle 3 with a fast assembling structure 104 of the multifunctional screwdriver 1, manually placing the nail into an ideal position, observing a positioning hole 105 of the multifunctional screwdriver 1, the intramedullary pin is rotated to a desired angle, a positioning column 501 arranged on the aiming frame 5 is inserted into the positioning hole 105, the groove of the clamping block 6 is clamped into the aiming frame 5 and the multifunctional screwdriver 1 and is locked by a locking bolt 7, the drill guide sleeve 8 is inserted along the guide hole 502 of the aiming frame 5 until the drill guide sleeve is abutted against the cortex of the clavicle bone, and after the depth is measured by drilling through the channel of the drill guide sleeve 8, a locking screw is connected with the screw locking screwdriver 9 and then is placed into the locking screw along the channel of the drill guide sleeve 8.

If external pressurization is needed, the pressurizing sleeve 4 is penetrated into the multifunctional screwdriver 1, the internal thread of the pressurizing sleeve 4 is screwed into the external thread A103 of the multifunctional screwdriver 1 until the end surface of the pressurizing sleeve 4 is abutted against the multifunctional screwdriver 1, and then the intramedullary pin and the locking screw are driven according to the working principle.

In conclusion, the intramedullary pin matching device has the advantages that the multifunctional screwdriver 1 integrates nail holding, nail rotating, orientation, pressurization and sighting rod, the intramedullary pin is directly connected with the sighting frame 5 for punching, placing and locking after being placed, and the operation is convenient and fast.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a supporting device of intramedullary needle, includes multi-functional screwdriver (1), its characterized in that: the multifunctional screwdriver is characterized in that a pull rod (2) is arranged on the inner side of the multifunctional screwdriver (1), two ends of the pull rod (2) extend out of the multifunctional screwdriver (1), a quick-assembly handle (3) is mounted at the front end of the multifunctional screwdriver (1), a pressurizing sleeve (4) is further in threaded connection with the middle end of the multifunctional screwdriver (1), the multifunctional screwdriver (1) is fastened with a sighting frame (5) through a clamping block (6) by adopting a locking bolt (7), the other end of the sighting frame (5) is sleeved on a drill guide sleeve (8), and the drill guide sleeve (8) is arranged on a locking screwdriver nail (9);

the multifunctional screwdriver is characterized in that a connecting structure (101) is arranged at the tail end of the multifunctional screwdriver (1), an orientation table (102) is arranged at the front end of the connecting structure (101), an external thread A (103) is arranged at the middle end of the multifunctional screwdriver (1), the multifunctional screwdriver (1) is in threaded connection with a pressurizing sleeve (4) through the external thread A (103), a quick-assembling structure (104) is arranged at the front end of the multifunctional screwdriver (1), a quick-assembling handle (3) is installed on the quick-assembling structure (104), a positioning hole (105) and a locking hole (106) are formed in one section of the multifunctional screwdriver (1) where a sighting frame (5) is installed, the positioning hole (105) and the locking hole (106) are distributed in opposite sides, and a through hole (107) for inserting a pull rod (2) is further formed in the multifunctional screwdriver (1);

an external thread B (201) is arranged at the tail end of the pull rod (2), a knurl (203) is arranged at the front end of the pull rod (2), and a limiting step (202) is arranged at the tail end of the knurl (203);

one end that aiming frame (5) is close to multi-functional screwdriver (1) is provided with reference column (501), aiming frame (5) are inserted in locating hole (105) through reference column (501) and are adopted locking bolt (7) locking hole (106) to install on multi-functional screwdriver (1) through fixture block (6), aiming frame (5) are close to the one end of leading drill bushing (8) and are provided with guiding hole (502), guiding hole (502) cover is on leading drill bushing (8).

2. The intramedullary needle matching device according to claim 1, wherein: the connecting structure (101) is in a plum blossom shape or a hexagonal shape.

3. The intramedullary needle matching device according to claim 1, wherein: the fast-assembling structure (104) is composed of a flat position and an arc groove.

4. The intramedullary needle matching device according to claim 1, wherein: the positioning hole (105) and the orientation table (102) form an included angle of 180 degrees.

5. The intramedullary needle matching device according to claim 1, wherein: knurling (203) is arranged on the outer circumferential surface of the front end of the pressurizing sleeve (4), and the shape of the knurling (203) is straight grains or a net text shape.

6. The intramedullary needle matching device according to claim 1, wherein: the axial position and angle of the guide hole (502) are concentric and parallel to the axial line of the assembled intramedullary nail locking hole (106).

Images