CN117796876A - Novel intramedullary force line location device - Google Patents

Abstract

The invention belongs to the technical field of medical appliances, and discloses a novel intramedullary force line positioning device, which comprises an ankle embracing device, wherein the ankle embracing device is connected with a force line adjusting arm through a first connecting seat, the force line adjusting arm is mutually perpendicular to the ankle embracing device, the force line adjusting arm is also connected with a bone cutting guide device with a guide opening for a cutter to pass through, the bone cutting guide device is connected with a depth measuring ruler, the bone cutting guide device has a backward inclination angle of 2-8 degrees relative to the ankle embracing device, and the backward inclination angle enables the cutter guided by the guide opening to have the same inclination angle as the backward inclination angle; wherein, the bone cutting guide comprises a slide seat and a guide seat with the guide opening; the sliding seat is connected with the force line adjusting arm and is in sliding fit with the guide seat so that the guide seat can move along a first direction, and the first direction is parallel to the guiding direction of the guiding opening. The invention can avoid the problem of unbalanced buckling and straightening gaps caused by the forward inclination of the tibia osteotomy, and the osteotomy is more accurate.

Description

Novel intramedullary force line location device

Technical Field

The invention belongs to the technical field of medical appliances, and particularly relates to a novel intramedullary external force line positioning device.

Background

The traditional intramedullary force line positioning device used in the existing knee joint unicondylar operation helps a doctor to determine the tibia osteotomy amount and the backward inclination angle during osteotomy in the operation, and the adjusting component comprises an ankle embracing device, a telescopic force line adjusting rod, locking nuts at a plurality of positions, an osteotomy guide, a sounding ruler and other structures, wherein the ankle embracing device is fixed at the ankle joint position of a patient to play a role in fixation; the force line adjusting rod stretches out of different lengths to meet the demands of patients with different heights, but the height of the force line adjusting rod cannot be suitable for being too high due to the fact that the whole structure is relatively complicated, so that the adjusting range is limited, and the operation demands cannot be met for some patients with relatively short statures; the locking nut plays a role in fixing the whole device, and due to vibration of a saw blade in operation, the locking nut is often loosened, so that inaccurate osteotomy is caused; the depth gauge is matched with the osteotomy guide to measure the osteotomy quantity, different components can be mutually adjusted, each part of components are required to be assembled together during use, an intramedullary force line positioning device is adjusted to be parallel to a long axis of the tibia according to operation conditions and experience of a doctor, a fixing point of the tibia osteotomy guide is positioned at 1/3 position in a tibial tuberosity, a locking nut is screwed by a hexagonal wrench, loosening is avoided, operation is complex, the doctor is required to judge whether a backward tilting angle is proper or not, and the operator is required to have abundant operation experience and personal feeling.

In addition, because the retroverted angle and the varus and valgus angle are required to be adjusted according to the actual conditions of different patients, doctors need to adjust each part to a proper retroverted angle according to experience after assembling in the adjustment process, and osteotomy is carried out after fixing, because the whole structure is heavy, and the adjusting knob is more, the adjustment process is complicated, the loosening of an intramedullary force line positioning device can occur in the osteotomy process, the osteotomy is inaccurate, the joint gap is enlarged, thicker gaskets are used, and even the long-term survival rate of the prosthesis is affected.

Disclosure of Invention

In view of the above, the present invention aims to provide a novel device for positioning an intramedullary force wire, so as to solve the problems that the existing device for positioning an intramedullary force wire is not easy to adjust the backward tilt angle accurately and the osteotomy guide is not convenient to adjust.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

the novel intramedullary force line positioning device comprises an ankle embracing device, wherein the ankle embracing device is connected with a force line adjusting arm through a first connecting seat, the force line adjusting arm is mutually perpendicular to the ankle embracing device, the force line adjusting arm is also connected with a bone cutting guide with a guide opening for a cutter to pass through, the bone cutting guide is connected with a depth measuring ruler, and the bone cutting guide has a backward inclination angle of 2-8 degrees relative to the ankle embracing device, and the backward inclination angle enables the cutter guided by the guide opening to have the same inclination angle as the backward inclination angle;

wherein, the bone cutting guide comprises a slide seat and a guide seat with the guide opening; the sliding seat is connected with the force line adjusting arm and is in sliding fit with the guide seat so that the guide seat can move along a first direction, and the first direction is parallel to the guiding direction of the guiding opening;

the depth measuring ruler is connected to the guide seat.

In a possible implementation manner, the guide seat is provided with a sliding connection part, and the sliding seat is provided with a first sliding groove in sliding fit with the sliding connection part;

the sliding seat is provided with a first locking piece which is used for enabling the sliding seat to be fixed relative to the guide seat.

In a possible implementation manner, the depth measuring ruler comprises a second connecting seat connected with the guide seat, wherein the second connecting seat is connected with at least one connecting rod parallel to the first direction, and each connecting rod is connected with a depth measuring ruler;

the depth measuring scale is provided with a probe which is conical and is inclined downwards.

In a possible implementation, the force line adjusting arm comprises at least two telescopic joints, and a first locking spanner for relatively fixing the two telescopic joints is arranged between the two adjacent telescopic joints.

In a possible implementation manner, the force line adjusting arm comprises two expansion joints, namely a first expansion joint and a second expansion joint, wherein the first expansion joint is hollow and cylindrical, and the second expansion joint is rod-shaped and is in telescopic fit in the first expansion joint;

the first locking spanner comprises a locking seat fixedly connected with the upper end of the first expansion joint, the locking seat is provided with a through hole for the second expansion joint to pass through, one side of the through hole is opened to expose part of the second expansion joint, the locking seat is also provided with a movable pressing part, and the movable pressing part is arranged at intervals with the exposed part of the second expansion joint; the locking seat is also hinged with a locking handle, the locking handle is provided with a pressing convex part, the pressing convex part enables the locking handle to be at least in a locking state, and when the locking handle is in the locking state, the pressing convex part presses the movable pressing part and enables the movable pressing part to press the second telescopic joint to be locked.

In a possible implementation manner, the pressing convex part enables the locking handle to further have a locking release state, and when the locking handle is in the locking release state, the pressing convex part does not press the movable pressing part and is in pressing stagger with the movable pressing part, and the movable pressing part is in a free state.

In a possible implementation manner, the force line adjusting arm is of a hollow structure, and at least one bone slag cleaning hole is arranged at the bottom end of the force line adjusting arm.

In a possible implementation manner, the ankle embracing device is provided with a connecting part extending along an adjusting direction, the ankle embracing device is in sliding fit with the first connecting seat through the connecting part, the first connecting seat is provided with a second locking spanner for enabling the first connecting seat to be relatively fixed with the connecting part, and the ankle embracing device is locked through the second locking spanner when moving to a target position in the adjusting direction relative to the first connecting seat.

In a possible implementation manner, the connecting part comprises a ruler rod, one end of the ruler rod is connected with the ankle embracing device, and the other end of the ruler rod penetrates through the first connecting seat and is in sliding fit with the first connecting seat;

the ruler rod is provided with an adjusting scale along the length direction of the ruler rod.

In a possible implementation manner, the ankle embracing device comprises a third connecting seat connected with the connecting part, wherein the third connecting seat is connected with a embracing claw part in a sliding manner and slides along a second direction, and the second direction is mutually perpendicular to the first direction;

the claw-holding part comprises two clamping claws connected with the connector, wherein the connector is in sliding fit with the third connecting seat, and the connector is provided with scale marks along the second direction.

In a possible implementation manner, the third connecting seat is provided with a second sliding groove, and the connector is provided with a sliding part in sliding fit with the second sliding groove;

the movable limiting shafts are arranged in the third connecting seats, the limiting shafts are connected with a control wrench for driving the movable limiting shafts to move, the limiting shafts penetrate into the second sliding grooves, the connectors are provided with a plurality of limiting holes along the second direction, and the limiting holes are used for the limiting shafts to penetrate into so that the connectors and the third connecting seats are relatively fixed in the second direction.

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

according to the novel intramedullary force line positioning device, the backward inclination angle of the osteotomy guide is fixed at 2-8 degrees, so that the osteotomy guide can have the backward inclination of the angle during osteotomy only by fixing the ankle holding device, the problem of unbalanced buckling and straightening gaps caused by forward inclination of the tibia osteotomy can be avoided, osteotomy is more accurate, and the osteotomy guide can be moved more conveniently through the cooperation of the sliding seat and the guide seat, shaking is not easy to occur, and further the measurement result is more accurate.

Moreover, guide holder and slide mutually support through sliding fit's first spout, can make the guide holder slide and be difficult for rocking more, and first retaining member can make guide holder and slide relatively fixed, and then can guarantee the stability at the osteotomy in-process to the probe adopts and is cone and downward probe of slope, makes its volume littleer, and the width can shorten to 6mm, can more do benefit to like this and measure under the less circumstances of unicondylar operation incision, and is more practical.

Simultaneously, through set up first locking spanner between the telescopic joint of power line adjustment arm, solved the easy not hard up problem of traditional knob nut locking for it is more accurate to cut the bone, and also set up the second locking spanner through on first connecting seat, can make the locking of ruler more convenient, also more stable.

In addition, the power line adjusting arm is of a hollow tubular structure, bone slag can possibly enter the power line sleeve due to splashing of bone slag in the osteotomy process, a bone slag cleaning hole is formed in the bottom of the power line sleeve, bone slag entering the power line adjusting arm is conveniently cleaned in time, the condition of stagnation caused by matching of instruments is avoided, and the ankle embracing device can enable the claw embracing piece to conduct internal and external rotation adjustment and can pick up left and right selection adjustment through matching of the limiting shaft and the limiting hole.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present application;

fig. 2 is a schematic perspective view of an osteotomy guide in accordance with an embodiment of the present application, at a first view angle;

fig. 3 is a schematic perspective view of an osteotomy guide in accordance with an embodiment of the present application, at a second view angle;

FIG. 4 is a schematic illustration of a connection of a force line adjustment arm of a osteotomy guide of an embodiment of the present application with a first locking wrench;

FIG. 5 is a schematic view of a connection structure of a force line adjusting arm of a bone cutting guide and an ankle clasping device according to an embodiment of the present application;

FIG. 6 is a schematic perspective view of an ankle brace of a osteotomy guide in accordance with an embodiment of the present application;

FIG. 7 is a schematic view of the structure of the claw members of the osteotomy guide of an embodiment of the present application;

fig. 8 is a retroverted schematic view of a osteotomy guide in accordance with an embodiment of the present application.

In the figure: 1-ankle embracing device; 11-ruler rod; 12-a third connecting seat; 13-holding a claw part; 131-connecting heads; 132-jaws; 133-limiting holes; 14-operating a wrench; 15-limiting shafts; 2-a first connection base; 3-force line adjusting arm; 31-a first telescopic joint; 32-bone slag cleaning holes; 33-a second telescopic joint; 4-a first locking wrench; 41-locking seat; 42-a movable press-holding part; 43-locking the handle; 44-pressing the convex part; 5-osteotomy guide; 51-a slide; 52-locking nut; 53-a guide port; 54-a guide seat; 55-a first chute; 6-a depth measuring ruler; 61-a second connection base; 62-connecting rods; 63-probe; 7-a second locking spanner.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

The invention is further described with reference to the drawings and specific examples.

Referring to fig. 1-8, an embodiment of the present application provides a novel intramedullary force line positioning device, which includes an ankle embracing device 1, wherein the ankle embracing device 1 is connected with a force line adjusting arm 3 through a first connecting seat 2, the force line adjusting arm 3 is mutually perpendicular to the ankle embracing device 1, the force line adjusting arm 3 is also connected with a bone cutting guide 5 with a guiding opening 53 for a cutting knife to pass through, the bone cutting guide 5 is connected with a depth measuring ruler 6, and the bone cutting guide 5 has a backward inclination angle of 2-8 degrees relative to the ankle embracing device 1, and the backward inclination angle enables the cutting knife guided by the guiding opening 53 to have an inclination angle identical to the backward inclination angle; wherein the bone cutting guide 5 comprises a sliding seat 51 and a guide seat 54 with the guide opening 53; the sliding seat 51 is connected with the force line adjusting arm 3, and the sliding seat 51 is in sliding fit with the guide seat 54 so that the guide seat 54 can move along a first direction, and the first direction is parallel to the guiding direction of the guiding opening 53; the depth gauge 6 is connected to the guide 54.

Through fixing the back inclination of the osteotomy guide 5 and fixing at 2-8 degrees, only need fix the ankle embracing device 1 like this, can make the osteotomy guide 5 have the back inclination of this angle when cutting the bone, and then can avoid tibia to cut the bone forward and incline and cause buckling and unbalancing the unbalanced problem in clearance, it is more accurate to cut the bone to can remove more conveniently through the cooperation of osteotomy guide through slide 51 and guide holder 54, be difficult for taking place to rock, and then can make measuring result more accurate. In a specific implementation, the back rake angle is preferably 5 °.

In one embodiment, the guide seat 54 has a sliding connection portion, and the sliding seat 51 has a first sliding groove 55 slidably matched with the sliding connection portion; the slide 51 is provided with a first locking member for fixing it relative to the guide 54.

The guide holder 54 and the sliding seat 51 are matched with each other through the first sliding groove 55 in sliding fit, so that the guide holder 54 slides and is not easy to shake, the guide holder 54 and the sliding seat 51 are relatively fixed by the first locking piece, and stability in the osteotomy process can be guaranteed. Specifically, the first locking member may be a locking nut 52 mounted on the sliding seat 51 and used for abutting against the guide seat 54.

Further, in order to make the sounding rod 6 applicable to smaller unicondylar incisions, the sounding rod 6 includes a second connecting seat 61 connected to the guide seat 54, at least one connecting rod 62 parallel to the first direction is connected to the second connecting seat 61, and a depth measuring rod is connected to each connecting rod 62; the depth gauge has a probe 63 which is tapered and inclined downwardly. Therefore, the probe 63 adopts the probe 63 which is conical and is inclined downwards, so that the volume of the probe 63 is smaller, the width of the probe can be shortened to 6mm from original 12.5mm, the measurement can be more conveniently carried out under the condition that the incision of the unicondylar operation is smaller, the structure is more practical, the structure is more simplified, the tibial osteotomy precision can be improved by placing the probe 63 into a knee joint gap for measurement, and the deviation generated during the measurement of the joint gap is avoided.

In one embodiment of the force line adjusting arm 3, the force line adjusting arm 3 comprises at least two telescopic joints, between which a first locking wrench 4 for fixing the two relative to each other is arranged.

By arranging the first locking spanner 4 between the telescopic joints of the force line adjusting arm 3, the problem that the traditional knob nut is easy to loosen in locking is solved, and the osteotomy is more accurate.

On the basis, the force line adjusting arm 3 comprises two telescopic joints, namely a first telescopic joint 31 and a second telescopic joint 33, wherein the first telescopic joint 31 is hollow and cylindrical, and the second telescopic joint 33 is rod-shaped and is in telescopic fit in the first telescopic joint 31; the first locking wrench 4 includes a locking seat 41 fixedly connected to the upper end of the first expansion joint 31, the locking seat 41 has a via hole for the second expansion joint 33 to pass through, one side of the via hole is opened to expose a part of the second expansion joint 33, the locking seat 41 further has a movable pressing part 42, and the movable pressing part 42 is disposed at an interval with the exposed part of the second expansion joint 33; the locking seat 41 is further hinged with a locking handle 43, the locking handle 43 is provided with a pressing convex part 44, the pressing convex part 44 enables the locking handle 43 to be at least in a locking state, and when the locking handle 43 is in the locking state, the pressing convex part 44 presses the movable pressing part 42 and enables the movable pressing part 42 to press the second telescopic joint 33 to be locked.

By adopting the first locking spanner 4 with the structure, the force line adjusting arm 3 can be conveniently and rapidly locked when extending and contracting to different lengths, and is not easy to be influenced by osteotomy to loosen.

Accordingly, in addition to the locked state, the pressing protrusion 44 provides the lock handle 43 with the unlocked state, and when the lock handle 43 is in the unlocked state, the pressing protrusion 44 does not press the movable pressing portion 42 and is displaced from the movable pressing portion 42, and the movable pressing portion 42 is in the free state.

In other embodiments, the force line adjusting arm 3 may also be designed as a hollow structure, and at least one bone slag cleaning hole 32 is provided at the bottom end of the force line adjusting arm 3. Because the force line adjusting arm 3 is of a hollow tubular structure, bone slag can possibly enter the force line sleeve due to splashing of the bone slag in the bone cutting process, and the bone slag cleaning hole 32 is additionally formed in the bottom of the force line sleeve, so that bone slag entering the force line adjusting arm 3 can be cleaned conveniently in time, and the situation of stagnation caused by matching of instruments is avoided.

In the embodiment of the application, the ankle embracing device 1 is provided with a connecting part extending along an adjusting direction, the ankle embracing device 1 is in sliding fit with the first connecting seat 2 through the connecting part, the first connecting seat 2 is provided with a second locking spanner 7 for enabling the first connecting seat 2 to be relatively fixed with the connecting part, and the ankle embracing device 1 is locked through the second locking spanner 7 when moving to a target position relative to the first connecting seat 2 in the adjusting direction.

Through also setting up second locking spanner 7 on first connecting seat 2, can make the ankle embracing device 1 adjust more convenient, swift.

Specifically, the connecting portion includes a ruler rod 11, one end of the ruler rod 11 is connected with the ankle embracing device 1, and the other end passes through the first connecting seat 2 and is in sliding fit with the first connecting seat 2; the ruler rod 11 is provided with an adjusting scale along the length direction thereof. The ruler rod 11 is of a square tube structure, can be in sliding fit with the first connecting seat 2, can be conveniently detached and adjusted in the front-back direction under the action of the second locking spanner 7, and is more convenient and accurate.

In a specific embodiment, the ankle embracing device 1 includes a third connecting seat 12 connected with the connecting portion, the third connecting seat 12 is slidably connected with a embracing claw member 13, and the embracing claw member 13 slides along a second direction, and the second direction is perpendicular to the first direction; the claw member 13 includes a connector 131 and two claws 132 connected to the connector 131, wherein the connector 131 is slidably matched with the third connecting seat 12, and the connector 131 is provided with scale marks along the second direction. In this regard, the claw member 13 can be moved in the first direction, so that the adjustment of the internal and external rotation directions can be facilitated, and more accurate osteotomy can be realized by matching with the backward tilt angle.

Meanwhile, in order to be able to conveniently lock after the adjustment of the internal and external rotation, the third connecting seat 12 is provided with a second sliding groove, and the connecting head 131 has a sliding portion slidingly engaged with the second sliding groove; the third connecting seat 12 is internally provided with a movable limiting shaft 15, the limiting shaft 15 is connected with a control wrench 14 for driving the third connecting seat to move, the limiting shaft 15 penetrates into the second sliding groove, the connecting head 131 is provided with a plurality of limiting holes 133 along the second direction, and the limiting holes 133 are used for the limiting shaft 15 to penetrate into so that the connecting head 131 and the third connecting seat 12 are relatively fixed in the second direction. The left and right selection adjustment is more convenient and quicker through the cooperation of the limiting shaft 15 and the limiting hole 133, and the control wrench 14 with the torsion spring can be specifically pulled to drive the limiting shaft 15 to axially move, so that the control wrench can be inserted into the corresponding limiting hole 133 of the connector 131 or withdrawn from the limiting hole 133, thereby being convenient to adjust and better in stability.

The application method of the novel intramedullary force wire positioning device is as follows:

when the ankle clamp is used, the ankle clamp 1 is clamped at the ankle joint of a patient, the probe 63 of the sounding ruler 6 is arranged at the lowest abrasion point of the tibia, the osteotomy quantity is determined, the tibia osteotome is adjusted left and right to be positioned at a proper position, the osteotomy precision and the operation simplicity are greatly improved, and the requirements on the operation experience of doctors are reduced.

To sum up, the novel intramedullary force line positioning device of the embodiment of the application has the following advantages:

1. the tibia osteotomy process is more accurate, and the retroverted angle of 5 degrees is fixed.

2. Can adjust the internal and external rotation angles and meet the clinical demands of different patients.

3. The operation is more convenient to adjust, and the locking spanner is used for locking, so that the operation is not easy to loosen.

4. The sounding ruler 6 is simpler in structure, well matches with a micro incision of a unicondylar operation, can measure more accurate osteotomy quantity and ensures accurate removal of tibia.

5. The strip-shaped holes are added on the side surface of the bottom of the force line adjusting arm 3, so that bone residues can be conveniently taken out in time, and the phenomenon that the instruments are matched to be jammed due to residual bone residues is avoided.

6. The tibia osteotomy device can be fixed after being adjusted in the left-right direction, so that the tibia osteotomy device is more matched with a tibia osteotomy region, and the osteotomy is more stable.

7. The structure is simpler and more convenient, and the operation is easier.

8. Avoiding the situation that the thicker gasket is selected due to the large bone cutting amount caused by the joint clearance assessment error because the experience of doctors is excessively relied on in the operation process.

9. The whole appliance is simpler and more convenient to use, and a doctor can cut bones faster and more accurately in the operation.

Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the invention and is not intended to limit the scope of the invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. Novel marrow external force line location device, its characterized in that: the device comprises an ankle embracing device (1), wherein the ankle embracing device (1) is connected with a force line adjusting arm (3) through a first connecting seat (2), the force line adjusting arm (3) is mutually perpendicular to the ankle embracing device (1), the force line adjusting arm (3) is also connected with a bone cutting guide (5) with a guide opening (53) for a cutter to pass through, the bone cutting guide (5) is connected with a depth measuring ruler (6), and the bone cutting guide (5) has a backward inclination angle of 2-8 degrees relative to the ankle embracing device (1), and the backward inclination angle enables the cutter guided by the guide opening (53) to have the same inclination angle as the backward inclination angle;

wherein the bone cutting guide (5) comprises a sliding seat (51) and a guide seat (54) with the guide opening (53); the sliding seat (51) is connected with the force line adjusting arm (3), and the sliding seat (51) is in sliding fit with the guide seat (54) so that the guide seat (54) can move along a first direction, and the first direction is parallel to the guiding direction of the guide opening (53);

the depth measuring ruler (6) is connected to the guide seat (54).

2. The novel intramedullary force wire positioning device of claim 1, wherein: the guide seat (54) is provided with a sliding connection part, and the sliding seat (51) is provided with a first sliding groove (55) which is in sliding fit with the sliding connection part;

the sliding seat (51) is provided with a first locking piece for enabling the sliding seat to be fixed relative to the guide seat (54).

3. The novel intramedullary force wire positioning device of claim 2, wherein: the depth measuring ruler (6) comprises a second connecting seat (61) connected with the guide seat (54), the second connecting seat (61) is connected with at least one connecting rod (62) parallel to the first direction, and each connecting rod (62) is connected with a depth measuring ruler;

the depth measuring scale has a probe (63) which is tapered and inclined downward.

4. The novel intramedullary force wire positioning device of claim 1, wherein: the force line adjusting arm (3) comprises at least two telescopic joints, and a first locking spanner (4) for enabling the two telescopic joints to be relatively fixed is arranged between the two adjacent telescopic joints.

5. The novel intramedullary force wire positioning device of claim 4, wherein: the force line adjusting arm (3) comprises two telescopic joints, namely a first telescopic joint (31) and a second telescopic joint (33), wherein the first telescopic joint (31) is hollow and cylindrical, and the second telescopic joint (33) is rod-shaped and is in telescopic fit in the first telescopic joint (31);

the first locking spanner (4) comprises a locking seat (41) fixedly connected with the upper end of the first expansion joint (31), the locking seat (41) is provided with a through hole for the second expansion joint (33) to pass through, one side of the through hole is opened to expose part of the second expansion joint (33), the locking seat (41) is also provided with a movable pressing part (42), and the movable pressing part (42) and the exposed part of the second expansion joint (33) are arranged at intervals; the locking seat (41) is further hinged with a locking handle (43), the locking handle (43) is provided with a pressing convex part (44), the pressing convex part (44) enables the locking handle (43) to be at least in a locking state, and when the locking handle (43) is in the locking state, the pressing convex part (44) presses the movable pressing part (42) and enables the movable pressing part (42) to press the second expansion joint (33) to be locked.

6. The novel intramedullary force wire positioning device of claim 4, wherein: the pressing convex part (44) enables the locking handle (43) to be in a locking release state, when the locking handle (43) is in the locking release state, the pressing convex part (44) does not press the movable pressing part (42) and is staggered with the movable pressing part (42), and the movable pressing part (42) is in a free state;

the force line adjusting arm (3) is of a hollow structure, and at least one bone slag cleaning hole (32) is formed in the bottom end of the force line adjusting arm (3).

7. A novel intramedullary force wire positioning device according to any one of claims 1 to 6, wherein: the ankle embracing device (1) is provided with a connecting portion extending along an adjusting direction, the ankle embracing device (1) is in sliding fit with the first connecting seat (2) through the connecting portion, the first connecting seat (2) is provided with a second locking spanner (7) used for enabling the first connecting seat (2) to be relatively fixed with the connecting portion, and when the ankle embracing device (1) moves to a target position relative to the first connecting seat (2) in the adjusting direction, the ankle embracing device is locked through the second locking spanner (7).

8. The novel intramedullary force wire positioning device of claim 7, wherein: the connecting part comprises a ruler rod (11), one end of the ruler rod (11) is connected with the ankle embracing device (1), and the other end of the ruler rod penetrates through the first connecting seat (2) and is in sliding fit with the first connecting seat (2);

the ruler rod (11) is provided with an adjusting scale along the length direction.

9. The novel intramedullary force wire positioning device of claim 7, wherein: the ankle embracing device (1) comprises a third connecting seat (12) connected with the connecting part, the third connecting seat (12) is connected with a embracing claw part (13) in a sliding mode, the embracing claw part (13) slides along a second direction, and the second direction is perpendicular to the first direction;

the holding claw part (13) comprises a connector (131) and two claws (132) connected with the connector (131), wherein the connector (131) is in sliding fit with the third connecting seat (12), and the connector (131) is provided with scale marks along the second direction.

10. The novel intramedullary force wire positioning device of claim 9, wherein: the third connecting seat (12) is provided with a second sliding groove, and the connector (131) is provided with a sliding part in sliding fit with the second sliding groove;

be equipped with mobilizable spacing axle (15) in third connecting seat (12), spacing axle (15) are connected with and are used for driving control spanner (14) that its removed, and spacing axle (15) penetrate the second spout, a plurality of spacing holes (133) have been seted up along the second direction to connector (131), and spacing hole (133) supply spacing axle (15) to penetrate in order to make connector (131) and third connecting seat (12) relatively fixed in the second direction.