CN216962592U

CN216962592U - A miniature external fixator device for hand

Info

Publication number: CN216962592U
Application number: CN202122007857.4U
Authority: CN
Inventors: 张晓行; 郑涛; 奚传传; 黄平平
Original assignee: Aike Shanghai Medical Instrument Co ltd
Current assignee: Aike Shanghai Medical Instrument Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-07-15
Anticipated expiration: 2031-08-25

Abstract

The utility model discloses a miniature external fixation support device for hands, which comprises: the two opposite ends of the double-ball joint seat are respectively and movably connected with a first threaded connecting rod and a second threaded connecting rod, the first threaded connecting rod and the second threaded connecting rod are respectively in threaded connection with a first clamp piece and a second clamp piece, and one sides of the first clamp piece and the second clamp piece are respectively provided with a pressurizing nut; the first clamp piece and the second clamp piece are identical in structure, and the first threaded connecting rod and the second threaded connecting rod are identical in structure. According to the utility model, the advantages of safe debris fixation and minimally invasive surgery are combined, allowing the placement of metal wires parallel to the joint plane, requiring minimal application space, and reducing risks for the patient and the physician.

Description

A miniature external fixator device for hand

Technical Field

The utility model relates to the technical field of medical fixing supports, in particular to a miniature external fixing support device for hands.

Background

When the fracture of the metacarpal bones or the phalanges of the hands is fixed in the incision reduction mode, the error range of the area with difficult dissection is very small. However, if conservative treatment is used, the hand joints and dynamic structures may be fixed, possibly causing damage thereto, and even so, the reduction may not be successfully maintained.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a miniature external fixing bracket device for hands, which combines the advantages of safe fragment fixing and minimally invasive surgery, allows metal wires to be placed in parallel to a joint surface, only needs the minimum application space and reduces the risks of patients and doctors. To achieve the above objects and other advantages in accordance with the present invention, there is provided a micro external fixing bracket device for a hand, comprising:

the two opposite ends of the double-ball joint seat are respectively and movably connected with a first threaded connecting rod and a second threaded connecting rod, the first threaded connecting rod and the second threaded connecting rod are respectively in threaded connection with a first clamp piece and a second clamp piece, and one sides of the first clamp piece and the second clamp piece are respectively provided with a pressurizing nut;

the first clamp piece and the second clamp piece are identical in structure, and the first threaded connecting rod and the second threaded connecting rod are identical in structure.

Preferably, the double ball joint seat comprises a double ball joint fixing part, a double ball joint locking cam inserted into the double ball joint fixing part, and a double ball adjusting module arranged inside the double ball joint fixing part.

Preferably, the double-ball adjusting module comprises a first double-ball fixing block, a second double-ball fixing block arranged opposite to the first double-ball fixing block, and an adjusting block arranged between the first double-ball fixing block and the second double-ball fixing block, the surfaces of the first double-ball fixing block and the second double-ball fixing block, which are in contact with the adjusting block, are inclined planes, and the adjusting block, the first double-ball fixing block and the second double-ball fixing block are arranged in a relative sliding manner.

Preferably, a cam hole is formed in one end face, close to the double-ball-joint locking cam, of the double-ball-joint seat, the double-ball-joint locking cam is inserted into the cam hole, a square cavity is formed in the middle of the double-ball-joint seat, and the double-ball adjusting module is placed in the cavity.

Preferably, the inner walls opposite to the lower side of the cavity are respectively provided with a first double-ball hole, the end surfaces of the first double-ball fixing block and the second double-ball fixing block, which are separated from each other, are respectively provided with a second double-ball hole, and the first double-ball holes and the second double-ball holes are correspondingly arranged.

Preferably, the first threaded connecting rod comprises a threaded connecting section and an adjusting ball fixedly connected with one end of the threaded connecting section, and the adjusting ball penetrates through the first double-ball hole and is matched with the second double-ball hole.

Preferably, the first clamp piece comprises a clamp base and a clamp locking cam for adjusting the clamp base, and the clamp base is provided with at least four fixing holes around the clamp locking cam for a circle.

Preferably, a first threaded hole is formed in the clamp base along the length direction of the threaded connection section, the threaded connection section is connected to the first threaded hole in a threaded manner, a second threaded hole is formed in one end face of the clamp base and communicated with the first threaded hole, and a second clamp locking cam is connected to the second threaded hole in a threaded manner.

Compared with the prior art, the utility model has the beneficial effects that: the external fixing support can be provided with the metal thread wire parallel to the joint surface, the application space of the device is reduced, the palm bone pre-drilling hole is not needed through the thread wire, a certain length can be trimmed, the inventory can be reduced, and the external fixing support can also achieve a plurality of medical effects of resetting, reserving and rehabilitation at the same time.

Drawings

FIG. 1 is a three-dimensional structure of a micro external fixator apparatus for a hand according to the present invention;

fig. 2 is a schematic view of a three-dimensional explosion structure of a double ball joint seat of the miniature external fixing bracket device for the hand according to the utility model;

Fig. 3 is a three-dimensional exploded view of a first clamping member of the micro external fixing support device for a hand according to the present invention.

Detailed Description

All other embodiments obtained by clearly and completely describing the technical solutions in the embodiments of the present invention and being preferred will fall within the scope of protection of the present invention with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1 to 3, a micro external fixator apparatus for hands, comprising: a double ball joint seat 10, wherein a first threaded connecting rod 20 and a second threaded connecting rod 50 are movably connected to two opposite ends of the double ball joint seat 10 respectively, a first clamp piece 40 and a second clamp piece 60 are respectively in threaded connection with the first threaded connecting rod 20 and the second threaded connecting rod 50, and a pressure nut 30 is respectively arranged on one side of the first clamp piece 40 and one side of the second clamp piece 60; the first and second clamping members 40 and 60 and the first and second threaded connecting rods 20 and 50 have the same structure, the double ball joint seat 10 includes a double ball joint fixing member 15, a double ball joint locking cam 11 inserted into the double ball joint fixing member 15, and a double ball adjusting module disposed inside the double ball joint fixing member 15, the double ball adjusting module includes a first double ball fixing block 13, a second double ball fixing block 12 disposed opposite to the first double ball fixing block 13, and an adjusting block 14 disposed between the first double ball fixing block 13 and the second double ball fixing block 12, the surfaces of the first and second double

ball fixing blocks

13 and 12 contacting the adjusting block 14 are inclined surfaces, the adjusting block 14, the first and second double

ball fixing blocks

13 and 12 are slidably disposed, a cam hole 153 is disposed on one end surface of the double ball joint seat 10 near the double ball joint locking cam 11, the cam hole 153 is inserted with the double-ball-joint locking cam 11, the middle part of the double-ball-joint seat 10 is provided with a square cavity 151, the cavity 151 is internally provided with the double-ball adjusting module, the opposite inner walls below the cavity 151 are respectively provided with a first double-ball hole 152, the end surfaces of the first double-ball fixing block 13 and the second double-ball fixing block 12 which are separated from each other are respectively provided with a second double-ball hole 131, the first double-ball hole 152 and the second double-ball hole 131 are correspondingly arranged, the first clamp element 40 and the second clamp element 60 can be compressed and stretched by the pressure nut 30, the first threaded connecting rod 20 and the second threaded connecting rod 50, so that the first clamp element 40 and the second clamp element 60 can move along the length direction of the first threaded connecting rod 20 and the second threaded connecting rod 50, the pressure nut 30 can rotate by an inner hexagon wrench, the pressure nut 30 rotates 360 degrees, the compression or dispersion of the threaded wires is 1 mm, when the threaded wires are inserted into the first fixture part 40 and the second fixture part 60, the positioning round points on the fixture locking cam 43 are aligned with the positioning round points on the fixture base 42, at the moment, the fixing holes 421 on the first fixture part 40 and the second fixture part 60 are in an open state, the threaded wires are conveniently inserted, after the insertion of the two threaded wires is completed, the first fixture part 40 and the second fixture part 60 cannot be displaced on the threaded wires, the threaded wires are fixed on the first fixture part 40 and the second fixture part 60 through the fixture locking cam 43, during installation, after each fixing hole 421 is inserted into the threaded wire, trimming is needed, the installation of the next threaded wire is convenient, according to the length of palm fragments, the second threaded wire is parallel or converged with respect to the first threaded wire, and the movement of the adjusting balls 22 on the first threaded connecting rod 20 and the second threaded connecting rod 50 becomes rigid by rotating the fixture locking cam 43 clockwise a little, the first threaded connector 20 and the second threaded connector 50 are aligned with the shaft of the volar bone, and finally one of the first clamping member 40 and the second clamping member 60 is locked to the first threaded connector 20 or the second threaded connector 50, and the angle is controlled by the locking adjusting ball 22 by rotating the clamp locking cam 43 clockwise.

Further, the first threaded connection rod 20 includes a threaded connection section 21 and an adjusting ball 22 fixedly connected to one end of the threaded connection section 21, and the adjusting ball 22 penetrates through the first double-ball hole 152 to match with the second double-ball hole 131.

Further, the first clamping member 40 includes a clamping base 42 and a clamping locking cam 43 for adjusting the locking clamping base 42, at least four fixing holes 421 are formed on the clamping base 42 around the clamping locking cam 43, a threaded screw is inserted into each fixing hole 421, generally, it is enough to insert two threaded screws into the first clamping member 40, the thread ensures good bone fixation, the thread is trimmed to length after insertion, increases the versatility of the system and reduces the required inventory, the clamp base 42 is provided with a first threaded hole along the length direction of the threaded connection section 21, the threaded connection section 21 is connected in the first threaded hole in a threaded manner, and a second threaded hole is formed in one end face of the clamp base 42, the second threaded hole is communicated with the first threaded hole, and a second clamp locking cam 41 is in threaded connection with the second threaded hole.

The number of devices and the scale of the processes described herein are intended to simplify the description of the utility model, and applications, modifications and variations of the utility model will be apparent to those skilled in the art.

While embodiments of the utility model have been described above, it is not intended to be limited to the details shown, described and illustrated herein, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed, and to such extent that such modifications are readily available to those skilled in the art, and it is not intended to be limited to the details shown and described herein without departing from the general concept as defined by the appended claims and their equivalents.

Claims

1. A miniature external fixator apparatus for hands, comprising:

the double-ball joint comprises a double-ball joint seat (10), wherein two opposite ends of the double-ball joint seat (10) are respectively and movably connected with a first threaded connecting rod (20) and a second threaded connecting rod (50), the first threaded connecting rod (20) and the second threaded connecting rod (50) are respectively in threaded connection with a first clamp piece (40) and a second clamp piece (60), and one sides of the first clamp piece (40) and the second clamp piece (60) are respectively provided with a pressurizing nut (30);

the structures of the first clamp piece (40) and the second clamp piece (60) and the structures of the first threaded connecting rod (20) and the second threaded connecting rod (50) are the same.

2. The micro external fixator apparatus for hands of claim 1, wherein the double ball joint socket (10) comprises a double ball joint fixture (15), a double ball joint locking cam (11) inserted into the double ball joint fixture (15), and a double ball adjustment module disposed inside the double ball joint fixture (15).

3. The micro external fixation bracket device for the hand of claim 2, wherein the double-ball adjustment module comprises a first double-ball fixing block (13), a second double-ball fixing block (12) opposite to the first double-ball fixing block (13), and an adjustment block (14) arranged between the first double-ball fixing block (13) and the second double-ball fixing block (12), the surfaces of the first double-ball fixing block (13) and the second double-ball fixing block (12) contacting the adjustment block (14) are inclined surfaces, and the adjustment block (14) and the first double-ball fixing block (13) and the second double-ball fixing block (12) are slidably arranged relatively.

4. The micro external fixation bracket device for hands of claim 2, wherein a cam hole (153) is formed in one end surface of the double ball joint seat (10) close to the double ball joint locking cam (11), the double ball joint locking cam (11) is inserted into the cam hole (153), a square cavity (151) is formed in the middle of the double ball joint seat (10), and a double ball adjustment module is placed in the cavity (151).

5. The micro external fixation bracket device for the hand part as claimed in claim 4, wherein the opposing inner walls below the chamber (151) are respectively opened with a first double ball hole (152), the first double ball fixing block (13) and the second double ball fixing block (12) are respectively opened with a second double ball hole (131) on the end surfaces away from each other, and the first double ball hole (152) and the second double ball hole (131) are correspondingly arranged.

6. The miniature external fixation bracket device for hands of claim 1, wherein the first threaded connection rod (20) comprises a threaded connection section (21) and an adjusting ball (22) fixedly connected with one end of the threaded connection section (21), and the adjusting ball (22) penetrates through the first double-ball hole (152) to match with the second double-ball hole (131).

7. The micro external fixation support device for the hand of claim 1, wherein the first clamp member (40) comprises a clamp base (42) and a clamp locking cam (43) for adjusting the clamp base (42), and at least four fixation holes (421) are formed on the clamp base (42) around the clamp locking cam (43).

8. The micro external fixation bracket device for hands of claim 7, wherein the clamp base (42) is provided with a first threaded hole along the length direction of the threaded connection section (21), the threaded connection section (21) is threadedly connected to the first threaded hole, and a second threaded hole is provided on one end surface of the clamp base (42), the second threaded hole is communicated with the first threaded hole, and a second clamp locking cam (41) is threadedly connected to the second threaded hole.