CN213525429U - Folding traction frame for femur - Google Patents

Abstract

The utility model discloses a folding thighbone traction frame, when pole one falls the extreme low, the slide bar on the guide block is located the arc wall, and pole one at this moment can the internal rotation, continues down to revolve adjusting nut five, makes kicking block and pole one separate, can realize that the alignment jig is folding inwards, is located the thigh bearing face, accomplishes and accomodates. Simultaneously through the length and the contained angle of adjusting each side of support frame main part, can realize whole minimum accomodating, practice thrift and accomodate the space that receives and occupy, the traction frame of being convenient for accomodate and disinfection treatment this structure can be accomodate the triangle alignment jig rotation to the inboard, has reduced the volume of accomodating of traction frame, has reduced the space and has occupy, and the disinfection is more thorough.

Description

Folding traction frame for femur

Technical Field

The utility model relates to an orthopedics medical instrument field especially relates to a folding thighbone traction frame.

Background

The fracture of femur and tibia is the common fracture in clinic, intramedullary nail fixation or percutaneous minimally invasive implantation bone fracture plate is the common treatment method of fracture of femur and tibia, the intramedullary nail is implanted from distal femur or proximal tibia, the patient must keep the leg bending posture operation to go on in the art.

The patient can not bend the knee alone under the anesthesia state, and the leg of the patient needs to be supported by the support. The Chinese patent application CN201911423627.7 discloses an automatic traction device for lower limb fracture setting operation, which enables a patient to keep leg bending posture for operation by arranging a triangular support frame, completes the traction of the broken bone by the functions of hinging among all surfaces and adjusting the length, is also provided with an adjusting mechanism with each angle on the support frame, is convenient for resetting the broken bone, meets various requirements of operation in the operation, is suitable for different situations of different patients, and has higher popularization.

However, the device has at least the following disadvantages: when the supporting frame is stored and disinfected, the tripod for supporting and adjusting the femoral position traction bow can not rotate to be stored, so that the supporting frame occupies a larger space when not in use, has the problem of inconvenient disinfection due to a large size, and has the risk of bacterial cross infection due to incomplete disinfection.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a folding thighbone traction frame convenient to accomodate is provided.

In order to solve the technical problem, the utility model discloses the technical scheme who takes is:

a collapsible femoral traction frame comprising:

the support frame is used for supporting the lower limbs of the patient to form and keep a leg bending state and is provided with a horizontal support bottom surface, a lower leg bearing surface used for bearing the lower legs of the patient and a thigh bearing surface used for bearing the patient; and

the femur traction mechanism is arranged on the thigh bearing surface and used for pulling the Kirschner wire passing through the distal end of the femur of the patient;

the method is characterized in that:

the femoral distraction mechanism includes:

a traction bow, which spans the thigh bearing surface;

the support frame includes:

the three cross bars are arranged in parallel and in a triangular shape;

the support frame comprises six support rods, wherein the length of each support rod is adjustable and can be locked, every two support rods are arranged between two cross rods in parallel and form a rectangular frame in an enclosing mode so as to form three surfaces of the support frame, and two ends of each support rod are rotatably connected with the end part of the corresponding cross rod;

at least one supporting piece which is arranged on the lower leg bearing surface, and two ends of the supporting piece are connected with the corresponding supporting rods;

the two third screw rods are respectively fixed on two sides of the upper part of the thigh bearing surface and are arranged in parallel with the supporting rods, the upper parts of the third screw rods are fixedly provided with guide blocks, the middle parts of the third screw rods are in sliding connection with ejector blocks, the lower parts of the ejector blocks are in threaded connection with adjusting nuts V, the guide blocks are provided with through holes, and slide rods penetrating into the through holes are detachably fixed on the guide blocks; and

the adjusting frame comprises two triangular supports which are respectively arranged on two sides of the thigh bearing surface, and each triangular support is formed by sequentially hinging a rod I, a rod II and a rod III to form a surrounding structure; wherein

The top of the guide groove is communicated with an annular arc-shaped groove, the bottom of the first rod is inserted on the top block and movably penetrates through the guide block, and the sliding rod can slide along the guide groove and the arc-shaped groove;

the second rod is arranged on the back of the traction bow and is fixed with one end of the traction bow;

and the third rod is of a telescopic rod structure.

The further technical scheme is as follows: the traction bow can slide along the second rod and can be locked.

The further technical scheme is as follows: the bracing piece includes:

a sleeve member;

the rod piece is sleeved with the sleeve piece in a sliding mode; and

and the annular lock can lock the sleeve piece and the rod piece.

The further technical scheme is as follows: the ring lock includes:

the tooth grooves are formed in the rod piece at equal intervals in the axial direction and are triangular;

one end of the rotating handle is rotatably fixed at the end part of the sleeve piece, the other end of the rotating handle is sleeved outside the rod piece, and a notch is formed in the side wall of the rotating handle;

the locking block is inserted into the notch, can move radially in the notch and can be limited axially and annularly, the locking block can move radially inwards and can be clamped with the tooth socket, and a chamfer is arranged on one side, close to the casing piece, of the radial outer end of the locking block to form a wedge-shaped surface;

the lock sleeve is sleeved outside the sleeve piece in a sliding mode, an axial annular space is formed between the inner wall of the lock sleeve and the outer wall of the rotary handle, a circle of lock groove is formed in the position, corresponding to the lock block, of the inner wall of the lock sleeve, and the side wall, corresponding to the wedge-shaped surface of the lock block, of the lock groove is a wedge-shaped pushing surface; and

the second spring is arranged in the annular space;

when the locking block moves towards the locking groove, the locking sleeve can be driven to extrude the second spring and is separated from the tooth groove on the rod piece.

The further technical scheme is as follows: and the rod piece is provided with a length marking line for displaying the length of the telescopic rear supporting rod.

The further technical scheme is as follows: the rod piece is axially provided with a guide limiting groove, a block which can slide in the guide limiting groove is fixed on the sleeve piece, and one end of the guide limiting groove, which is positioned in the sleeve piece, is sealed.

The further technical scheme is as follows: a primary-secondary embedded structure is arranged between the end face of the sleeve piece and the rotating handle, the rotating handle rotates 90 degrees from the tooth socket to the smooth face side of the rod piece on the sleeve piece and then is limited, and the rotating handle rotates 90 degrees in the opposite direction and then is limited.

The further technical scheme is as follows: both ends of the supporting piece are arranged on the supporting rod in a slidable and lockable manner through the sliding block.

Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:

the traction frame of this structure can accomodate the rotation of triangular alignment jig to the inboard, has reduced the volume of accomodating of traction frame, has reduced the space and has taken up, and the disinfection is more thorough.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

FIG. 1 is a schematic view of the structure of the apparatus;

FIG. 2 is a schematic view of the structure of the adjusting frame of the device;

FIG. 3 is a schematic view of the storage state of the device;

FIG. 4 is another schematic view of the storage state of the device

FIG. 5 is a cross-sectional view of the support rod of the present device;

FIG. 6 is another cross-sectional view of the support rod of the present device;

FIG. 7 is a schematic end view of the connection end of the cannula member to the rotatable handle of the present device;

fig. 8 is a schematic view of the structure of the ring lock in the present device.

Detailed Description

The technical solutions in the embodiments of the present invention are 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 some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

As shown in fig. 1 to 8, one embodiment of the foldable femoral traction frame of the present disclosure includes a support frame and a femoral traction mechanism 210.

The support frame is used for supporting the lower limbs of a patient to form and keep a leg bending state and is provided with a horizontal support bottom surface 3, a lower leg bearing surface 1 for bearing the lower legs of the patient and a thigh bearing surface 2 for bearing the patient.

And the femur traction mechanism 210 is arranged on the thigh bearing surface 2 and is used for pulling the kirschner wire passing through the distal end of the femur of the patient.

The femoral distraction mechanism 210 includes a distraction arch 211 that spans the thigh bearing surface 2.

The support frame comprises three cross bars 4, six support bars 10 which are adjustable in length and can be locked and at least one support piece. The three cross bars are arranged in parallel and in a triangle, and the cross bar 4 at the top is used for supporting the knee joint of the patient. The length is adjustable and can lock, and per two spinal branch vaulting poles 10 are arranged in parallel between two horizontal poles to enclose the frame that constitutes a rectangle, in order to form three faces of support frame, the both ends of vaulting pole 10 and the horizontal pole tip rotatable coupling that corresponds make the contained angle between face and the face, the length of face adjustable. The supporting piece is arranged on the lower leg bearing surface, and two ends of the supporting piece are connected with the corresponding supporting rods 10 and used for supporting the lower limbs of the patient.

Two third screw rods 224 and an adjusting frame 220 are also fixed on the supporting frame.

The two third screw rods 224 are respectively fixed on two sides of the upper part of the thigh bearing surface 2 and are arranged in parallel with the supporting rod 10, the upper parts of the third screw rods 224 are fixed with guide blocks, the middle parts of the third screw rods are in sliding connection with ejector blocks 225, adjusting nuts are in threaded connection with the lower parts of the ejector blocks 225, the guide blocks are provided with through holes, and sliding rods 2261 penetrating into the through holes are detachably fixed on the guide blocks.

The adjusting frame 220 comprises two triangular brackets respectively arranged on two sides of the thigh supporting surface 2, and each triangular bracket is formed by sequentially hinging a rod I221, a rod II 222 and a rod III 223. The adjusting frame 220 is used for fixing the traction bow 211 with the thigh bearing surface 2, and the adjusting frame 220 can drive the traction bow 211 to move and lock along the length direction of the thigh bearing surface 2 so as to be fixed with the Kirschner wire at a proper position and pull the Kirschner wire to reduce the fracture; the traction bow 211 can also be driven to swing to adjust the included angle between the traction bow and the thigh bearing surface 2 so as to correct the angulation deformity before and after the fracture of the femur.

The axial direction of the first rod 221 is provided with a guide groove, the top of the guide groove is communicated with an annular arc-shaped groove 2211, the bottom of the first rod 221 is inserted into the top block 225 and movably penetrates through the guide block 226, and the sliding rod 2261 can slide along the guide groove and the arc-shaped groove 2211. The second rod 222 is arranged on the back of the traction bow 211 and is fixed with one end of the traction bow 211. The third rod 223 is a telescopic rod structure.

The third rod 223 can specifically adopt a threaded rod and a threaded pipe with internal threads to realize sleeve joint expansion, a nut is screwed on the threaded rod and abuts against the end part of the threaded pipe, and the nut is rotated to realize that the threaded rod extends into or extends out of the threaded pipe to realize expansion of the third rod 223.

Through the extension and contraction of the third rod 223, the second rod 222 can drive the traction bow 211 to swing along the hinged part, so that the anterior-posterior angulation deformity of the fractured femur can be corrected.

The fifth adjusting nut is rotated to enable the jacking block to move up and down, the first rod 221 can be lifted up and down, the traction bow 211 can be moved to a proper position of a thigh to be fixed with the Kirschner wire, and the Kirschner wire can be pulled to reduce a fracture and recover the length of the femur.

When the slide bar 2261 on the guide block 226 is located in the guide groove, the first rod 221 can only move up and down, and the position of the top block 225 can be adjusted and limited downwards by changing the position of the adjusting nut five on the third screw 224.

When the first rod 221 is lowered to the lowest position, the sliding rod 2261 on the guide block 226 is located in the arc-shaped groove 2211, the first rod 221 at the moment can rotate inwards, the adjusting nut is continuously screwed downwards for five, the top block 225 is separated from the first rod 221, the adjusting frame 220 can be folded inwards, and the adjusting frame is located in the thigh bearing surface to finish storage. Meanwhile, by adjusting the length and the included angle of each surface of the support frame main body, as shown in fig. 3 and 4, the overall minimum storage can be realized, the occupied space of the storage is saved, and the storage and the disinfection treatment are convenient.

Because the width of each side receives the restriction of operation table size in the support frame, for making the device can adapt to the obese patient of posture, can arrange the outside of bracing piece 10 in parallel with three 224 screws, fixed through the connecting rod between the both ends of three 224 screws and bracing piece 10, can increase the length of traction bow 211 like this, can be applicable to the patient of different postures, the adaptability is high, and spreading value is big.

The traction bow 211 can slide along the second rod 222 and be locked. Specifically, the second rod 222 is clamped between the bottom support and the nut by arranging the screw rod with the bottom support and the nut in a matching manner, and the traction bow 211 and the second rod can be fixed or can slide by screwing or loosening the nut. Wherein, the bottom support is provided with a groove matched with the second rod, so that the fixation is more stable.

The two ends of the traction bow 211 synchronously move close to or far away from the thigh bearing surface 2, so that the front and back angulation deformity of the broken femur can be corrected. One end of the traction bow 211 moves independently, and the adjustment of the internal rotation and external rotation angles of the fractured femur can be realized.

The length of the support rod 10 is adjustable to meet the requirement of adjustable length of each surface, thereby being suitable for different patients with different body posture differences. The length of each surface of the support frame and the included angle are set to be adjustable, the height of the support frame and the length of the large and small leg bearing surfaces can be changed, so that the shape of the support frame can be adjusted according to the body shape of a patient, the small legs of the patient can be carried on the small leg bearing surfaces, and the use requirements of different patients can be met.

The telescopic structure of the support rod 10 comprises a sleeve member 101 and a rod member 102 which are slidably sleeved, and the combined length of the sleeve member 101 and the rod member 102 is locked by an annular lock to keep the length of the support rod 10 stable.

The ring lock comprises a rotating handle 103, a lock block 104, a lock sleeve 105 and a second spring 106.

A plurality of tooth sockets 1021 are axially and equidistantly arranged on the rod piece 102, the tooth sockets 1021 are triangular, and the triangular tooth sockets 1021 can form wedge-shaped surfaces in the axial direction and the annular direction, so that the lock block 104 can slide in and out conveniently.

One end of the rotating handle 103 is rotatably fixed at the end of the sleeve member 101 through a spring collar or a bearing, and the other end is sleeved outside the rod member 102, and a notch is formed in the side wall of the rotating handle 103.

The locking piece 104 is inserted into the notch, can radially move in the notch, and is axially and annularly limited, the locking piece 104 radially moves inwards and can be connected with the tooth socket 1021 in a clamping manner, and one side of the radial outer end of the locking piece 104, which is close to the casing part 101, is provided with a chamfer to form a wedge-shaped surface.

The lock sleeve 105 is slidably sleeved outside the sleeve member 101, an axial annular space is formed between the inner wall of the lock sleeve 105 and the outer wall of the rotating handle 103, a circle of lock groove is formed in the inner wall of the lock sleeve 105 corresponding to the lock block 104, and the side wall of the lock groove corresponding to the wedge-shaped surface of the lock block 104 is a wedge-shaped pushing surface.

The second spring 106 is arranged in the annular space.

When the lock block 104 moves towards the lock groove, the lock sleeve 105 can be driven to press the second spring 106 and disengage from the toothed groove 1021 on the rod 102.

When the length of the support rod 10 needs to be adjusted, the medical staff rotates the rotating handle 103, the rotating handle 103 simultaneously drives the locking block 104 to rotate, the locking block 104 can be separated from the tooth space 1021, and the rod member 102 and the cannula member 101 can be adjusted in length without axial limiting of the locking block 104. When the lock block 104 can be disengaged from the tooth socket 1021, the lock block 104 moves outward in the radial direction, and the wedge surface on the lock block 104 presses the pushing surface on the lock sleeve 105, so that the lock sleeve 105 moves axially towards one end of the sleeve member 101 and presses the second spring 106. After the length of the supporting rod 10 is adjusted, the rotating handle 103 is rotated reversely, when the rotating handle 103 drives the locking block 104 to move to the clamping groove position, the locking sleeve 105 is reset axially under the action of the second spring 106, and the locking block 104 can be pressed into the locking groove radially under the action of the pushing surface, so that the locking block 104 is effectively clamped in the tooth groove 1021, and the reliability of the length of the supporting rod 10 is ensured.

The telescopic link of this structure is manual regulation mode, and it is convenient to adjust, when the annular lock is in the open mode, can carry out the large-size quick adjustment to the length of bracing piece 10, can practice thrift operation time.

A length marking line 1022 is arranged on one side of the rod member 102 opposite to the tooth socket 1021, and is used for displaying the length of the telescopic rear supporting rod 10, so that the size of the telescopic rod can be conveniently controlled, and the operation is more convenient and faster.

The rod member 102 is axially provided with a guide limiting groove 1023, the sleeve member 101 is fixed with a block 1011 capable of sliding in the guide limiting groove 1023, and one end of the guide limiting groove 1023 in the sleeve member 101 is closed.

The cooperation of direction spacing groove 1023 and guide block 226 for member 102 and casing 101 can only carry out the axial telescopic adjustment, can not take place to rotate, has avoided member 102 and casing 101 card to die. And the end of the guide limiting groove 1023 in the sleeve 101 is closed, so that the separation of the rod piece 102 and the sleeve 101 is avoided, the problem that the support frame scatters and loses the supporting force due to misoperation in the operation is avoided, and the reassembling of the support frame is avoided.

A primary-secondary embedded structure is arranged between the end face of the sleeve member 101 and the rotating handle 103, the rotating handle 103 rotates 90 degrees from the tooth socket 1021 to the smooth face side of the rod member 102 on the sleeve member 101 and then is limited, and the rotating handle rotates 90 degrees in the opposite direction and then is limited. Moreover, icons for displaying the opening or closing state of the annular lock are arranged on the support rod 10, so that the operation of medical staff is facilitated, and the operation correctness is ensured.

The supporting member is also provided between the two supporting bars 10 on the thigh supporting surface for supporting the patient's thighs.

Both ends of the supporting member 20 are slidably and lockably provided on the supporting bar 10 by means of sliders. Specifically, the outer wall of the support rod 10 is provided with an external thread, the external thread is preferably arranged on the sleeve member 101, the support rod 10 is in threaded connection with an adjusting nut, and the adjusting nut and the sliding block are rotatably fixed through a bearing or a clamping spring. The slider can be driven to move by rotating the adjusting nut, and locking is realized by the adjusting nut and the thread of the support rod 10.

The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.

Claims (8)

1. A collapsible femoral traction frame comprising:

the support frame is used for supporting the lower limbs of a patient to form and keep a leg bending state and is provided with a horizontal support bottom surface (3), a lower leg bearing surface (1) for bearing the lower legs of the patient and a thigh bearing surface (2) for bearing the patient; and

the femur traction mechanism (210) is arranged on the thigh bearing surface (2) and is used for pulling the kirschner wire passing through the distal end of the femur of the patient;

the method is characterized in that:

the femoral distraction mechanism (210) comprises:

a traction bow (211) which spans the thigh support surface (2);

the support frame includes:

the three cross rods (4) are arranged in parallel and in a triangular shape;

the length of the six support rods (10) is adjustable and can be locked, every two support rods (10) are arranged between the two cross rods in parallel and form a rectangular frame in an enclosing mode so as to form three surfaces of the support frame, and two ends of each support rod (10) are rotatably connected with the end portion of the corresponding cross rod;

at least one supporting piece (20) which is arranged on the lower leg bearing surface, and two ends of the supporting piece are connected with the corresponding supporting rods (10);

the two third screw rods (224) are respectively fixed on two sides of the upper part of the thigh bearing surface (2) and are arranged in parallel with the supporting rod (10), the upper parts of the third screw rods (224) are fixedly provided with guide blocks, the middle parts of the third screw rods (224) are in sliding connection with ejector blocks (225), the lower parts of the ejector blocks (225) are in threaded connection with adjusting nuts (V), the guide blocks are provided with through holes, and a sliding rod (2261) penetrating into the through holes is detachably and fixedly arranged on the guide blocks; and

the adjusting frame (220) comprises two triangular supports which are respectively arranged at two sides of the thigh bearing surface (2), and each triangular support is formed by sequentially hinging a rod I (221), a rod II (222) and a rod III (223) in a surrounding way; wherein

The axial direction of the first rod (221) is provided with a guide groove, the top of the guide groove is communicated with an annular arc-shaped groove (2211), the bottom of the first rod (221) is inserted into the top block (225) and movably penetrates through the guide block (226), and the sliding rod (2261) can slide along the guide groove and the arc-shaped groove (2211);

the second rod (222) is arranged on the back surface of the traction bow (211) and is fixed with one end of the traction bow (211);

and the third rod (223) is of a telescopic rod structure.

2. The femoral traction frame of claim 1, wherein: the traction bow (211) can slide along the second rod (222) and be locked.

3. The femoral traction frame of claim 1, wherein: the support bar (10) comprises:

a sleeve member (101);

the rod piece (102) is sleeved with the sleeve piece (101) in a sliding mode; and

an annular lock capable of locking the sleeve member (101) and the rod member (102).

4. The femoral traction frame of claim 3, wherein: the ring lock includes:

the tooth sockets (1021) are arranged on the rod piece (102) at equal intervals in the axial direction, and the tooth sockets (1021) are triangular;

the rotating handle (103) is rotatably fixed at one end of the sleeve piece (101) at one end, the rod piece (102) is sleeved at the other end of the rotating handle, and a notch is formed in the side wall of the rotating handle (103);

the locking block (104) is inserted into the notch, can move radially in the notch and is limited axially and annularly, the locking block (104) can move radially inwards and can be clamped with the tooth groove (1021), and a chamfer is arranged on one side, close to the sleeve piece (101), of the radial outer end of the locking block (104) to form a wedge-shaped surface;

the lock sleeve (105) is sleeved outside the sleeve piece (101) in a sliding mode, an axial annular space is formed between the inner wall of the lock sleeve (105) and the outer wall of the rotating handle (103), a circle of lock groove is formed in the position, corresponding to the lock block (104), on the inner wall of the lock sleeve (105), and the side wall, corresponding to the wedge-shaped face of the lock block (104), of the lock groove is a wedge-shaped pushing face; and

the second spring (106) is arranged in the annular space;

when the lock block (104) moves towards the lock groove, the lock sleeve (105) can be driven to extrude the second spring (106) and is separated from the toothed groove (1021) on the rod piece (102).

5. The femoral traction frame of claim 3, wherein: and length marking lines (1022) are arranged on the rod piece (102) and used for displaying the length of the telescopic rear supporting rod (10).

6. The femoral traction frame of claim 3, wherein: the utility model discloses a guide sleeve piece, including member (101), pole piece (102) go up the axial and seted up direction spacing groove (1023), be fixed with on sleeve piece (101) and can be in direction spacing inslot (1023) gliding piece (1011), the one end that direction spacing groove (1023) are located sleeve piece (101) is sealed.

7. The femoral traction frame of claim 4, wherein: a primary-secondary embedded structure is arranged between the end face of the sleeve piece (101) and the rotating handle (103), the rotating handle (103) rotates by 90 degrees from the tooth socket (1021) to the smooth face side of the rod piece (102) on the sleeve piece (101) and then is limited, and the rotating handle rotates by 90 degrees in the opposite direction and then is limited.

8. The femoral traction frame of claim 1, wherein: both ends of the supporting piece (20) are arranged on the supporting rod (10) in a slidable and lockable manner through the sliding blocks.

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