CN221205817U - Traction bow device - Google Patents

Abstract

The utility model discloses a traction bow device, which relates to the technical field of medical appliances and comprises a first traction bow foot, a second traction bow foot, a traction bow body, a sliding block, a first locking piece, a second locking piece and a third locking piece, wherein one end of the traction bow body and one end of the first traction bow foot can rotate around a first axis, the first locking piece is used for locking the rotation of the first traction bow foot, the other end of the traction bow body and one end of the second traction bow foot can rotate around a second axis, the second locking piece is used for locking the rotation of the second traction bow foot, the sliding block is arranged on the traction bow body in a sliding mode, the third locking piece is used for locking the relative sliding between the sliding block and the traction bow body, and the sliding block is fixedly connected with one end of a traction rope. The medical staff can ensure that the projection of the traction rope on the horizontal plane is collinear with the axis of the bone to be traction by adjusting the position of the sliding block on the traction bow body, thereby reducing the risk of dislocation of the broken end of the bone; and is convenient to install, use and adjust.

Description

Traction bow device

Technical Field

The utility model relates to the technical field of medical appliances, in particular to a traction bow device.

Background

The traction bow is a medical instrument commonly used in orthopedic traction treatment and is mainly applied to traction of bones of limbs, such as traction of the lower end of femur, tibial tuberosity, calcaneus and the like.

Taking the tibial tuberosity as an example, because of the characteristics of shallow tibial tuberosity position, easy positioning, few surrounding soft tissues and the like, when treating femur fracture, hip fracture and dislocation of hip joint, doctors often treat patients through the traction of the tibial tuberosity, and mainly utilize the traction of the counterweight articles to act on the tibial tuberosity of the patients, so that the pain of the patients can be effectively relieved, the tension or retraction of the soft tissues at the fracture position can be relieved, the muscle spasm can be prevented, the deformity can be prevented, the fracture can be reset, and the treatment purpose can be achieved.

The existing traction bow is formed by integrally bending a metal wire, such as a patent CN 2531753Y-clamp type traction bow, one end of a traction rope is directly bound on the traction bow, the other end of the traction rope is bound on a counterweight object, when the position of the traction rope changes, the position of the traction rope, which is acted on the traction bow, cannot be adjusted, if the projection of the traction rope on a horizontal plane for a long time is not collinear with the axis of the femur of a patient, bone dislocation and even malformation can be caused.

Disclosure of utility model

The utility model aims to provide a traction bow device, which solves the problems in the prior art, solves the problem that the projection of a traction rope on a horizontal plane is collinear with the axis of a bone to be traction of a patient, reduces the risk of dislocation of a broken end of the bone, and is convenient to install, use and adjust.

In order to achieve the above object, the present utility model provides the following solutions:

The utility model provides a traction bow device which comprises a first traction bow foot, a second traction bow foot, a traction bow body, a sliding block, a first locking piece, a second locking piece and a third locking piece, wherein the first traction bow foot and the second traction bow foot are positioned on the same side of the traction bow body, one end of the traction bow body and one end of the first traction bow foot can rotate around a first axis, the other end of the traction bow body and one end of the second traction bow foot can rotate around a second axis, the first axis is parallel to the second axis, one end of the first traction bow foot far away from the traction bow body and one end of the second traction bow foot far away from the traction bow body can be fixed at a position to be towed, the first locking piece is used for locking relative rotation between the traction bow body and the first traction bow foot so that the relative position between the traction bow body and the first traction bow foot can be kept fixed, the second locking piece is used for locking the relative rotation between the traction bow body and the second locking piece and one end of the traction bow body can be connected with one end of the traction bow body and the sliding piece so that the relative position between the traction bow body and the sliding piece can be kept.

Preferably, the first locking piece with the second locking piece comprises first screw rod and first locating part, first locating part is fixed to be set up the one end of first screw rod, just the external diameter of first locating part is greater than the external diameter of first screw rod, first screw hole has all been seted up at the both ends of the traction bow body, first traction bow foot's one end with the through-hole has all been seted up to the one end of second traction bow foot, the internal diameter of through-hole is not less than the external diameter of first screw rod and is less than the external diameter of first locating part, first locking piece is last first screw rod is kept away from first traction bow foot's one end the through-hole with traction bow body one end first screw hole threaded connection, just first locking piece is last first locating part can be to being close to first screw hole's direction extrusion first traction bow foot can make first traction bow foot and the first axial line keep the external diameter of first screw rod and second axial line keep the first locking piece is last first axial line is kept away from first screw rod and first locking piece is last first screw hole threaded connection.

Preferably, a first connecting column is fixedly arranged at one end of the first traction bow foot, a second connecting column is fixedly arranged at one end of the traction bow body, a first threaded hole is formed in the second connecting column, a first limiting tooth is fixedly arranged at one side of the second connecting column, the second connecting column is used for being attached to one side of the first connecting column, a second limiting tooth is fixedly arranged at one side of the second connecting column, the axis of the first limiting tooth and the axis of the second limiting tooth can coincide with the first axis, and the first limiting tooth and the second limiting tooth can be mutually meshed and limit relative rotation between the first connecting column and the second connecting column around the first axis.

Preferably, the first connecting column is close to one end of the second connecting column and is provided with a cylindrical groove, the second connecting column is close to one end of the first connecting column and is fixedly provided with a cylindrical protrusion, the inner diameter of the groove is larger than the inner diameter of the through hole and smaller than the outer diameter of the first limiting tooth, the outer diameter of the protrusion is larger than the inner diameter of the first threaded hole and smaller than the outer diameter of the second limiting tooth, and the protrusion can be inserted into the groove and rotate around the first axis relative to the groove.

Preferably, the traction bow further comprises a Kirschner wire, a first installation hole is formed in one end, far away from the traction bow body, of the first traction bow foot, a second installation hole is formed in one end, far away from the traction bow body, of the second traction bow foot, one end of the Kirschner wire can be detachably and fixedly arranged in the first installation hole, and the other end of the Kirschner wire can be detachably and fixedly arranged in the second installation hole.

Preferably, the locking device further comprises a fourth locking piece and a fifth locking piece, wherein the fourth locking piece can fix one end of the k-wire in the first mounting hole, and the fifth locking piece can fix the other end of the k-wire in the second mounting hole.

Preferably, the sliding block is provided with a sliding hole, the traction bow body is arranged in the sliding hole in a penetrating way, and the cross section area of the traction bow body on the same cross section is smaller than the projection area of the sliding hole on the cross section.

Preferably, the third locking piece is a second screw rod, a second threaded hole communicated with the sliding hole is formed in the sliding block, one end of the second screw rod can be connected in the second threaded hole in a threaded mode and extends out of the second threaded hole to be abutted to the traction bow body, and therefore the sliding block and the traction bow body are kept fixed in relative positions.

Preferably, a connecting ring is fixedly arranged on the sliding block.

Preferably, the traction bow body is C-shaped.

Compared with the prior art, the utility model has the following technical effects:

According to the traction bow device, the first traction bow foot and the second traction bow foot are respectively arranged at two sides of a part to be traction of a patient, and the sliding block used for being connected with the traction rope can slide from one end of the traction bow body to the other end, namely, the position between the first traction bow foot and the second traction bow foot is moved, so that medical staff can ensure that the projection of the traction rope on a horizontal plane is collinear with the axis of a bone to be traction of the patient by adjusting the position of the sliding block on the traction bow body, and the risk of dislocation of a broken bone end is reduced; and adopt first traction bow foot, second traction bow foot and traction bow body components of a whole that can function independently structure, it is convenient when using first traction bow foot and second traction bow foot with the patient wait to pull the position and be connected the back earlier, rethread traction bow body and first traction bow foot and second traction bow foot's connection use, convenient installation use and adjustment.

Further, the first locking piece and the second locking piece are composed of a first screw rod and a first limiting piece, and the first traction bow foot, the second traction bow foot and the traction bow body are fixedly connected through the matching of the first screw rod and the first threaded hole, so that the traction bow is simple in structure and convenient to install and detach.

Further, the mutual meshing limit of the first limit tooth and the second limit tooth can ensure the relative position between the first connecting column and the second connecting column to be fixed, and the dislocation caused by the relative rotation between the first connecting column and the second connecting column is avoided.

Further, the arrangement of the grooves and the protrusions facilitates the positioning connection of the traction bow body and the first traction bow foot connection for quick alignment.

Further, adopt the kirschner wire and its both ends can be dismantled respectively and fix in first mounting hole and second mounting hole, it can conveniently adopt the kirschner wire to install at patient treat traction position to and make things convenient for the kirschner wire to pass through first mounting hole and second mounting hole with the fixed connection at its both ends.

Further, the fourth locking piece and the fifth locking piece are used for guaranteeing stable connection between the Kirschner wire and the first mounting hole or the second mounting hole, and firm connection effect is improved.

Further, the sliding block is arranged on the traction bow body in a sliding way through the sliding hole in a penetrating way, the structure is simple, the processing, the manufacturing and the installation are convenient, and the sliding block can slide at the position on the traction bow body conveniently.

Further, the third locking piece adopts the threaded connection of second screw rod and second screw hole, when the relative position between the locking sliding block and the traction bow body is required, only need through rotating the second screw rod to make second screw rod one end butt can realize on the traction bow body, its simple structure, the adjustment is convenient.

Further, the connecting ring arranged on the sliding block is used for providing a connecting point, so that the connecting rope is convenient to connect with the sliding block.

Further, the traction bow body adopts a C-shaped structure, so that the stress can be more uniformly dispersed to the first traction bow foot and the second traction bow foot, and the traction bow body is firm in structure and convenient for the sliding block to slide left and right on the traction bow body.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of the overall structure of a traction bow device provided by the present utility model;

FIG. 2 is an exploded view of the traction bow apparatus of the present utility model;

Fig. 3 is a schematic structural view of a first connection post and a second connection post in the traction bow device provided by the utility model.

In the figure: 100-traction bow device; 1-a first traction bow foot; 11-a first connection post; 12-a first limiting tooth; 13-grooves; 14-a first mounting hole; 2-a second traction bow foot; 21-a second mounting hole; 3-traction bow; 31-a second connection post; 32-second limit teeth; 33-bump; 4-sliding blocks; 41-slide hole; 42-connecting ring; 5-kirschner wire; 6-a first locking member; 61-a first screw; 62-a first stop; 7-a second locking member; 8-a third locking member; 9-fourth locking piece; 10-fifth locking element.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model aims to provide a traction bow device, which solves the problems in the prior art, solves the problem that the projection of a traction rope on a horizontal plane is collinear with the axis of a bone to be traction of a patient, reduces the risk of dislocation of a broken end of the bone, and is convenient to install, use and adjust.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Example 1

The present embodiment provides a traction bow device 100, mainly but not limited to the traction of tibial nodules, as shown in fig. 1-3, including a first traction bow foot 1, a second traction bow foot 2, a traction bow body 3, a sliding block 4, a first locking piece 6, a second locking piece 7 and a third locking piece 8, wherein the first traction bow foot 1 and the second traction bow foot 2 are located on the same side of the traction bow body 3, one end of the traction bow body 3 and one end of the first traction bow foot 1 can rotate around a first axis, the other end of the traction bow body 3 and one end of the second traction bow foot 2 can rotate around a second axis, the first axis is parallel to the second axis, one end of the first traction bow foot 1, which is far away from the traction bow body 3, and one end of the second traction bow foot 2, which is far away from the traction bow body 3, can be fixed at a position to be achieved by the first locking piece 6, the relative rotation between the traction bow body 3 and the first traction bow foot 1 so that the traction bow body 3 and the traction bow body 1 can keep the relative rotation between the first locking piece 1, the second locking piece 7 and the traction bow body 3 can keep the relative position between the traction bow body 3 and the second traction bow body 3 and the first traction bow body 3, the sliding block 4 can keep the relative position between the second locking piece 4 and the traction bow body 3 and the sliding block 4, and the relative to the position can keep the traction bow body 3 and the sliding block 4, and the position between the sliding block 4 can keep the relative to be fixed between the traction body 3 and the sliding block and the position between the sliding block and the traction body 4 and the relative to the traction body 3. By arranging the first traction bow foot 1 and the second traction bow foot 2 on two sides of a part to be traction of a patient respectively, as the sliding block 4 used for being connected with the traction rope can slide from one end of the traction bow body 3 to the other end, namely, the position between the first traction bow foot 1 and the second traction bow foot 2 is moved, medical staff can ensure that the projection of the traction rope on a horizontal plane is collinear with the axis of the bone to be traction of the patient by adjusting the position of the sliding block 4 on the traction bow body 3, thereby reducing the risk of dislocation of a broken bone end; and adopt first traction bow foot 1, second traction bow foot 2 and traction bow body 3 components of a whole that can function independently structure, it is convenient when using first traction bow foot 1 and second traction bow foot 2 with the patient wait to pull the position after well, rethread traction bow body 3 and first traction bow foot 1 and second traction bow foot 2's connection use, convenient installation use and adjustment.

Specifically, the position of the sliding block 4 on the traction bow body 3 can be adjusted according to the clinical actual situation, so that the projection of the pulling force provided by the traction rope on the horizontal plane and the axis of the lower limb of the patient are in the same straight line, the fracture recovery time is effectively shortened, and the risk of bone dislocation is reduced.

Specifically, when in use, the first traction bow foot 1 and the second traction bow foot 2 are respectively positioned at two sides of a part to be towed of a patient.

Specifically, the first traction bow foot 1 and the second traction bow foot 2 are used for being fixed on two sides of a part to be towed of a patient, and besides the adopted Kirschner wire 5, screws which are used in a conventional way can be adopted, namely, a threaded hole is formed in one end side wall of the first traction bow foot 1, the screws are connected with the internal threads of the screw holes, a threaded hole is formed in one end side wall of the second traction bow foot 2, the screws are connected with the internal threads of the screw holes, and the two screws are opposite and are provided with pointed ends which are used for penetrating bones of the part to be towed of the patient.

In the alternative scheme of this embodiment, more preferably, as shown in fig. 2 and fig. 3, the first locking piece 6 and the second locking piece 7 are both composed of a first screw 61 and a first limiting piece 62, the first limiting piece 62 is fixedly arranged at one end of the first screw 61, the outer diameter of the first limiting piece 62 is larger than the outer diameter of the first screw 61, the two ends of the traction arch body 3 are both provided with first threaded holes, one end of the first traction arch foot 1 and one end of the second traction arch foot 2 are both provided with through holes, the inner diameter of the through holes is not smaller than the outer diameter of the first screw 61 and smaller than the outer diameter of the first limiting piece 62, one end of the first screw 61 on the first locking piece 6 far away from one end of the first limiting piece 62 can pass through the through hole at one end of the first traction arch foot 1 and is in threaded connection with the first threaded hole at one end of the traction arch body 3, the first limiting piece 62 on the first locking piece 6 can be extruded in the direction close to the first threaded hole at one end of the traction arch body 3 so that the first traction arch foot 1 can be kept at the first position between the first traction arch foot 1 and the traction arch body 3, one end of the first locking piece 6 and the second axial line 7 on the first locking piece 6 is not smaller than the outer diameter of the first screw 61 and smaller than the outer diameter of the first limiting piece 62, namely, the first axial line 7 on the first locking piece 7 can be extruded at the other end of the first threaded hole at the first end of the first locking piece 6 can be extruded at the first threaded hole at the first axial line 7 and the first end of the first threaded hole 3. The first locking piece 6 and the second locking piece 7 are composed of a first screw rod 61 and a first limiting piece 62, and the first traction bow foot 1 and the second traction bow foot 2 are fixedly connected with the traction bow body 3 through the matching of the first screw rod 61 and the first threaded hole, so that the traction bow is simple in structure and convenient to install and detach.

Specifically, the outer side wall of the first limiting member 62 is fixedly provided with a protrusion 33, such as a rib, so that a medical staff can conveniently hold, rotate and apply external force manually.

In an alternative scheme of this embodiment, preferably, as shown in fig. 2 and 3, a first connecting post 11 is fixedly provided at one end of the first traction bow foot 1, a through hole is provided on the first connecting post 11, a second connecting post 31 is fixedly provided at one end of the traction bow body 3, a first threaded hole is provided on the second connecting post 31, a first spacing tooth 12 is fixedly provided at one side of the first connecting post 11 for attaching to the second connecting post 31, a second spacing tooth 32 is fixedly provided at one side of the second connecting post 31 for attaching to the first connecting post 11, both axes of the first spacing tooth 12 and the second spacing tooth 32 can coincide with the first axis, and the first spacing tooth 12 and the second spacing tooth 32 can be meshed with each other and limit relative rotation between the first connecting post 11 and the second connecting post 31 around the first axis. The mutual engagement limiting of the first limiting teeth 12 and the second limiting teeth 32 can ensure the relative position between the first connecting column 11 and the second connecting column 31 to be fixed, and the dislocation caused by the relative rotation between the first connecting column 11 and the second connecting column 31 is avoided.

Specifically, the first spacing tooth 12 is opposite to the second spacing tooth 32, and each tooth on the first spacing tooth 12 is engaged with each tooth on the second spacing tooth 32 in a staggered manner.

In the alternative of this embodiment, as shown in fig. 2 and 3, preferably, a cylindrical groove 13 is disposed at one end of the first connecting post 11 near the second connecting post 31, a cylindrical protrusion 33 is fixedly disposed at one end of the second connecting post 31 near the first connecting post 11, the inner diameter of the groove 13 is larger than the inner diameter of the through hole and smaller than the outer diameter of the first limiting tooth 12, the outer diameter of the protrusion 33 is larger than the inner diameter of the first threaded hole and smaller than the outer diameter of the second limiting tooth 32, and the protrusion 33 can be inserted into the groove 13 and rotate around the first axis relative to the groove 13. The provision of the recess 13 and the projection 33 facilitates a positioning connection of the traction bow 3 at the connection with the first traction bow foot 1 for a quick alignment.

Specifically, the structures of the first traction bow foot 1 and the second traction bow foot 2 are the same, and the connection structure of the first traction bow foot 1 and the traction bow body 3 is the same as the connection structure of the second traction bow foot 2 and the traction bow body 3.

In an alternative of this embodiment, as shown in fig. 1 and 2, preferably, the traction bow device 100 further includes a k-wire 5, a first mounting hole 14 is disposed at an end of the first traction bow foot 1 away from the traction bow body 3, a second mounting hole 21 is disposed at an end of the second traction bow foot 2 away from the traction bow body 3, one end of the k-wire 5 is detachably and fixedly disposed in the first mounting hole 14, and the other end of the k-wire 5 is detachably and fixedly disposed in the second mounting hole 21. The kirschner wire 5 is adopted, two ends of the kirschner wire 5 can be detachably fixed in the first mounting hole 14 and the second mounting hole 21 respectively, the kirschner wire 5 can be conveniently arranged at a part to be towed of a patient, and the kirschner wire 5 is conveniently fixedly connected with two ends of the kirschner wire through the first mounting hole 14 and the second mounting hole 21.

In an alternative of this embodiment, as shown in fig. 1 and 2, preferably, the traction bow device 100 further includes a fourth locking member 9 and a fifth locking member 10, where the fourth locking member 9 can fix one end of the k-wire 5 in the first mounting hole 14, and the fifth locking member 10 can fix the other end of the k-wire 5 in the second mounting hole 21. The fourth locking piece 9 and the fifth locking piece 10 are used for guaranteeing stable connection between the k-wire 5 and the first mounting hole 14 or the second mounting hole 21, and the firm connection effect is improved.

Specifically, the fourth locking piece 9 and the fifth locking piece 10 are both of screw structures with external threads, a threaded hole is formed in one end of the first traction bow foot 1 with the first mounting hole 14, the fourth locking piece 9 is in threaded connection with the threaded hole, and one end of the fourth locking piece 9 can extend to the first mounting hole 14 and then is abutted against the side wall of the k-wire 5 positioned in the first mounting hole 14; the second traction bow foot 2 is provided with a threaded hole at one end of the second mounting hole 21, the fifth locking piece 10 is in threaded connection with the threaded hole, and one end of the fifth locking piece 10 can extend to the second mounting hole 21 and then is abutted against the side wall of the Kirschner wire 5 positioned in the second mounting hole 21.

In the alternative of this embodiment, as shown in fig. 1 and 2, preferably, the sliding block 4 is provided with a sliding hole 41, the traction bow body 3 is penetratingly arranged in the sliding hole 41, and the cross-sectional area of the traction bow body 3 on the same cross section is smaller than the projection area of the sliding hole 41 on the cross section. The sliding block 4 is arranged on the traction bow body 3 in a sliding penetrating way through the sliding hole 41, and the traction bow body is simple in structure, convenient to process, manufacture and install and convenient for sliding in the position of the sliding block 4 on the traction bow body 3.

In the alternative of this embodiment, as shown in fig. 2, preferably, the third locking member 8 is a second screw, the sliding block 4 is provided with a second threaded hole communicated with the sliding hole 41, and one end of the second screw can be screwed into the second threaded hole and extend out of the second threaded hole to abut against the traction bow 3 so as to keep the sliding block 4 and the traction bow 3 fixed in relative position. The third locking piece 8 adopts the threaded connection of the second screw rod and the second threaded hole, and when the relative position between the locking sliding block 4 and the traction bow body 3 is required, the second screw rod is only required to be rotated, so that one end of the second screw rod is abutted to the traction bow body 3, and the traction bow is simple in structure and convenient to adjust.

In the alternative of this embodiment, as shown in fig. 1 and 2, it is preferable that the sliding block 4 is fixedly provided with a connection ring 42. The connecting ring 42 provided on the slider 4 is used to provide a connection point for facilitating connection of the connecting rope to the slider 4.

In the alternative of this embodiment, it is preferable that the traction bow 3 is C-shaped as shown in fig. 1 and 2. The traction bow body 3 adopts a C-shaped structure, so that the stress can be more uniformly dispersed to the first traction bow foot 1 and the second traction bow foot 2, and the traction bow body is firm in structure and convenient for the sliding block 4 to slide left and right on the traction bow body 3.

Specifically, the cross section of the traction bow body 3 is polygonal, such as rectangular, trapezoidal, regular hexagonal, etc., so as to prevent the sliding block 4 of the traction bow body 3 from turning over relative to the traction bow body 3 after being sleeved on the traction bow body 3.

Specifically, the first traction bow foot 1, the second traction bow foot 2, the traction bow body 3, the sliding block 4 and the like are all supported by stainless steel.

Specifically, the traction force of the traction rope is transferred to the Kirschner wire 5 through the sliding block 4, the traction bow body 3, the first traction bow foot 1 and the second traction bow foot 2.

Specifically, when in use, the end of the traction rope far away from the sliding block 4 is tied with a weight.

The principles and embodiments of the present utility model have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present utility model; also, it is within the scope of the present utility model to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the utility model.

Claims (10)

1. A traction bow device, characterized in that: comprises a first traction bow foot, a second traction bow foot, a traction bow body, a sliding block, a first locking piece, a second locking piece and a third locking piece,

The first traction bow foot and the second traction bow foot are positioned on the same side of the traction bow body, one end of the traction bow body and one end of the first traction bow foot can rotate around a first axis, the other end of the traction bow body and one end of the second traction bow foot can rotate around a second axis, the first axis is parallel to the second axis, and one end of the first traction bow foot far away from the traction bow body and one end of the second traction bow foot far away from the traction bow body can be fixed at a part to be towed;

The first locking piece is used for locking relative rotation between the traction bow body and the first traction bow foot so that the relative position between the traction bow body and the first traction bow foot can be kept fixed, and the second locking piece is used for locking relative rotation between the traction bow body and the second traction bow foot so that the relative position between the traction bow body and the second traction bow foot can be kept fixed;

The sliding block is arranged on the traction bow body in a sliding manner, the sliding block can slide to the other end of the traction bow body along one end of the traction bow body, the third locking piece is used for locking relative sliding between the sliding block and the traction bow body so that the sliding block and the traction bow body can keep fixed relative positions, and the sliding block is used for being fixedly connected with one end of a traction rope.

2. A traction bow apparatus according to claim 1, wherein: the first locking piece and the second locking piece are both composed of a first screw rod and a first limiting piece, the first limiting piece is fixedly arranged at one end of the first screw rod, the outer diameter of the first limiting piece is larger than that of the first screw rod, first threaded holes are formed in two ends of the traction bow body, through holes are formed in one end of the first traction bow foot and one end of the second traction bow foot, and the inner diameter of the through hole is not smaller than that of the first screw rod and smaller than that of the first limiting piece;

One end, far away from the first limiting piece, of the first screw rod on the first locking piece can penetrate through the through hole at one end of the first traction bow foot and is in threaded connection with the first threaded hole at one end of the traction bow body, the first limiting piece on the first locking piece can press the first traction bow foot towards the direction close to the first threaded hole so that the relative position between the first traction bow foot and the traction bow body can be kept fixed, and the axis of the first screw rod on the first locking piece is the first axis;

One end of the first screw rod, which is far away from the first limiting part, on the second locking part can penetrate through the through hole at one end of the second traction bow foot and is in threaded connection with the first threaded hole at the other end of the traction bow body, the first limiting part on the second locking part can extrude the second traction bow foot towards the direction close to the first threaded hole so that the second traction bow foot can keep fixed relative positions with the traction bow body, and the axis of the first screw rod on the second locking part is the second axis.

3. A traction bow apparatus according to claim 2, wherein: a first connecting column is fixedly arranged at one end of the first traction bow foot, the through hole is formed in the first connecting column, a second connecting column is fixedly arranged at one end of the traction bow body, the first threaded hole is formed in the second connecting column, a first limiting tooth is fixedly arranged at one side of the first connecting column, which is used for being attached to the second connecting column, the second connecting column is used for being attached one side of the first connecting column is fixedly provided with a second limiting tooth, the axis of the first limiting tooth and the axis of the second limiting tooth can coincide with the first axis, and the first limiting tooth and the second limiting tooth can be meshed with each other and limit relative rotation between the first connecting column and the second connecting column around the first axis.

4. A traction bow apparatus according to claim 3, wherein: the first spliced pole is close to the one end of second spliced pole is provided with columniform recess, the second spliced pole is close to the fixed columniform arch that is provided with of one end of first spliced pole, the internal diameter of recess is greater than the internal diameter of through-hole just is less than the external diameter of first spacing tooth, bellied external diameter is greater than the internal diameter of first screw hole just is less than the external diameter of second spacing tooth, the arch can insert in the recess and relative the recess is around first axis rotates.

5. A traction bow apparatus according to claim 1, wherein: still include the kirschner wire, first traction bow foot is kept away from traction bow body's one end is provided with first mounting hole, the second traction bow foot is kept away from traction bow body's one end is provided with the second mounting hole, kirschner wire's one end can be dismantled fixedly set up in the first mounting hole, just kirschner wire's the other end can be dismantled fixedly set up in the second mounting hole.

6. A traction bow apparatus according to claim 5, wherein: the novel Kirschner wire fixing device further comprises a fourth locking piece and a fifth locking piece, wherein the fourth locking piece can fix one end of the Kirschner wire in the first mounting hole, and the fifth locking piece can fix the other end of the Kirschner wire in the second mounting hole.

7. A traction bow apparatus according to claim 1, wherein: the sliding block is provided with a sliding hole, the traction bow body is arranged in the sliding hole in a penetrating mode, and the cross section area of the traction bow body on the same cross section is smaller than the projection area of the sliding hole on the cross section.

8. A traction bow apparatus according to claim 7, wherein: the third locking piece is a second screw rod, a second threaded hole communicated with the sliding hole is formed in the sliding block, one end of the second screw rod can be connected in the second threaded hole in a threaded mode, the second threaded hole extends out and is abutted to the traction bow body, and therefore the sliding block and the traction bow body are kept fixed in relative positions.

9. A traction bow apparatus according to claim 1, wherein: the sliding block is fixedly provided with a connecting ring.

10. A traction bow apparatus according to claim 1, wherein: the traction bow body is C-shaped.