CN215192121U - External fixing device for kirschner wire - Google Patents

Abstract

The utility model discloses a ke shi needle external fixation device, in this fixing device, with mount, fixed block and the integration of portion of holding tightly form two at least independent fixed monomers on each leading truck, have two at least ke shi needle installation positions on each fixed monomer, realize the effective fixed to many ke shi needles through a plurality of fixed monomers. The fixing single body can be arranged on at least two Kirschner wires and is not limited by the driving angle of the Kirschner wires. Because the setting of two upper and lower mounts for two fixed blocks of fixing at same root kirschner wire have restricted the rotation each other, realized the locking to the fixed block, can maintain the bone position, prevent to restore to the throne the back fracture and shift again, hold the portion of tightly through setting up the lamella column structure and fix every kirschner wire, utilize the characteristic of can extrude the tension of the lamella of holding tightly and open and reverse holding tightly, realize the fixed to different diameter kirschner wires, do not receive the restriction of kirschner wire thickness, practical range is wide, and spreading value is high.

Description

External fixing device for kirschner wire

Technical Field

The utility model relates to the field of medical equipment, especially, relate to an external fixing device of kirschner wire, be applicable to the supplementary treatment that resets of children's supracondylar fracture of humerus.

Background

The supracondylar fracture of humerus of children is a common and frequently encountered disease in orthopedics of children. The supracondylar fracture of the humerus of the child refers to the fracture within 2cm above the internal and external condyles at the far end of the humerus, and is a good-haired part of the fracture because the upper part of the humerus condyles is provided with a coronal fossa in front and an olecranal fossa in back, and only one extremely thin bone plate is arranged between the two fossas and is a weak point of the humerus.

The conservative treatment requirement of splint external fixation by manual reduction is high, the incidence rate of splint fixation and re-displacement after successful reduction is high, the elbow varus and valgus deformity is often left, and the Volkmann blood myocontracture sometimes occurs. The incision operation treatment is adopted, so that the wound is large, much bleeding is caused, the risk of damaging peripheral nerves and blood vessels is caused, the complications are high, operation scars are left, and the attractiveness is affected. The technical reduction of the supracondylar fracture of the humerus of the child assists the fixation of the kirschner wires, two or three kirschner wires are driven into the proximal fracture end, and the humerus condylar fracture reduction auxiliary device has a trend that the invasive injury of the incision reduction internal fixation is reduced due to reliable fixation, small trauma and less bleeding, early functional exercise after operation, good joint function recovery and no operation scar, and is accepted and widely developed by doctors and patients.

The existing method for treating the supracondylar fracture of the humerus of the child by using the minimally invasive cross kirschner wire also has some problems. Generally, no appropriate and effective fixation means are applied after the k-wire is implanted. Therefore, the implanted kirschner wire is easy to shift due to external force collision or patient movement, so that the fracture is displaced after the reduction operation, needle track infection, abnormal healing and the like are caused, and the patient is injured.

The utility model discloses a cross kirschner wire external fixation device in chinese utility model patent CN201922175588.5, applicable for fixing kirschner wires of different diameters, but still has the following use defects at least:

firstly, the direction of the kirschner wire is easy to deviate due to the operation of the doctor by the experience when the kirschner wire is driven, so that two or three kirschner wires are not parallel and form an angle in space. The axes of the through holes on the disclosed cross Kirschner wire external fixing device are arranged in parallel, so that two Kirschner wires with angles cannot be fixed;

secondly, the sizes of a plurality of through holes on the disclosed crossed kirschner wire external fixing device are adjusted to be equal, and two kirschner wires with different thicknesses cannot be fixed;

thirdly, the adjustment of the size of the perforation depends on the spring to provide acting force, the stability of the force is poor, so that the fixing strength between the device and the Kirschner wire is reduced, and the situation that the Kirschner wire displaces still exists;

fourthly, the three kirschner wires cannot be externally fixed, and the use defect exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a ke shi needle external fixation device is provided, the ke shi needle that can thickness difference more than two is external fixed as an organic whole, and does not squeeze into the angle restriction by the ke shi needle.

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

the external fixing device of kirschner wire, its characterized in that includes:

the number of the guide frames is not less than that of the Kirschner wires to be fixed, and the guide frames are arranged up and down;

at least two fixing frames are arranged on each guide frame, and the distance between every two adjacent fixing frames is adjustable and can be locked with the guide frames;

each fixing frame is provided with a fixing block, the fixing blocks are rotatably arranged on the fixing frames by virtue of rotating shafts, the rotating shafts are arranged perpendicular to the adjusting direction of the fixing frames, and the fixing blocks are provided with through holes for the Kirschner wires to penetrate downwards; and

the holding part is coaxially fixed above the through hole and provided with a plurality of holding petals which are annularly arranged at intervals, and the diameter of an aperture formed by upward convergence of the holding petals can be smaller than that of the Kirschner wire through adjustment of a locking part;

each Kirschner wire is fixed by two corresponding fixing blocks on the two guide frames.

A further technical scheme lies in, the outward appearance of portion top of holding tightly is the circular cone mesa, locking portion includes the locking cap of establishing of cover on holding tightly the portion, the inner wall of locking cap is the circular cone mesa equally, and the diameter of locking cap inner wall upper end is less than the diameter of holding tightly the portion top.

The technical scheme is that the outer surface of the lower portion of the clasping portion is a threaded cylindrical surface, and a connecting sleeve in threaded connection with the clasping portion extends downwards from the bottom of the locking cap.

The technical scheme is that the locking cap is provided with a rotating part with edges.

The technical scheme is that the guide frame is of a rectangular frame structure, a slide way is formed in the length direction of the guide frame, and two fixing frames are arranged in the slide way in a sliding mode.

The technical scheme is that the guide frame is rotatably provided with adjusting screw rods along the length direction of the guide frame, each adjusting screw rod is connected with two adjusting blocks in a threaded manner, the two adjusting blocks are respectively fixed with the two fixing frames, and the rotating directions of the threads on the two adjusting blocks are opposite.

The technical scheme is that the guide frame is provided with three slideways which are radially and annularly and uniformly distributed by taking a certain point as a circle center, and each slideway is internally provided with a fixed frame in a sliding manner.

The technical scheme is that an adjusting screw is rotatably arranged on the guide frame along the length direction of each slide way, an adjusting block is connected to each adjusting screw in a threaded manner, and the adjusting blocks are fixed with corresponding fixing frames.

A further technical scheme lies in, the guide way has all been seted up on two inside walls of slide, the both ends slidable of mount is located the guide way.

The further technical scheme is that in the two fixed guide frames of the same Kirschner wire, a protective sleeve is detachably fixed on the upper surface of the guide frame above the protective sleeve, and the protective sleeve is arranged around the holding part and is higher than the holding part.

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

in this fixing device, with mount, fixed block and the integration of portion of holding tightly form two at least independent fixed monomers on each leading truck, have two at least ke shi needle installation positions on each fixed monomer, realize the effective fixed to many ke shi needles through a plurality of fixed monomers.

When each fixing unit is installed, one of the Kirschner wires is used as a reference needle and is installed with the fixing unit, the fixing unit is enabled to rotate around the reference needle to adapt to the front-back angular adjustment between the Kirschner wires according to the positions of other Kirschner wires to be fixed, the distance between two adjacent fixing frames can be adjusted to adapt to the distance adjustment between the two Kirschner wires, and the fixing block can adapt to the lateral angular adjustment between the Kirschner wires through the rotation of the rotating shaft, so that the fixing unit is installed on at least two Kirschner wires without the limitation of the driving angle of the Kirschner wires.

In addition, due to the arrangement of the upper fixing frame and the lower fixing frame, the two fixing blocks fixed on the same Kirschner wire are limited to rotate, the fixing blocks are locked, the installation stability of the fixing device is ensured, each fixing block does not need to be locked independently, the operation is convenient, the locking is firm and reliable, the bone position can be maintained, the fracture can be prevented from being displaced after reset, the malformation healing and infection can be effectively prevented, and the healing can be promoted.

In the device, hold the portion of tightly through setting up petal column structure and fix every kirschner wire, utilize the characteristic of holding the lamella tightly that can extrude to open and reverse holding tightly, realize the fixed to different diameter kirschner wires, make the device can be as an organic whole with many kirschner wires of different diameters simultaneously, do not receive the restriction of kirschner wire thickness, practical range is wide, and spreading value is high.

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 top view of the apparatus;

FIG. 3 is a schematic front view of the apparatus;

FIG. 4 is a schematic view of a structure of a fixing unit in the present apparatus;

FIG. 5 is a schematic structural view of a mounting position of the Kirschner wire in the present apparatus;

FIG. 6 is a schematic structural diagram of a fixing block in the device;

FIG. 7 is another schematic view of the structure of the fixing unit in the present apparatus.

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 7, an embodiment of the external k-wire fixation device of the present disclosure is a mechanism for externally fixing two or more k-wires. The auxiliary reduction device can be suitable for auxiliary reduction treatment of the supracondylar fracture of the humerus of the child, two Kirschner wires are generally driven into the proximal end of the fracture, and three Kirschner wires are also driven into the proximal end of the fracture. Of course, the device can also be used for fixing short fracture or avulsion fracture and other fracture with low stress.

For realizing fixing many ke shi needles as an organic whole in vitro, prevent that the ke shi needle from receiving external force to produce the displacement, the outer fixing device of ke shi needle includes a plurality of leading truck 1, the quantity of treating fixed ke shi needle is no less than to the quantity of leading truck 1, a plurality of leading truck 1 set up from top to bottom, it has two at least ke shi needle installation positions to integrate on each leading truck 1, each ke shi needle installation position includes a mount 2, a fixed block 3 and one hold portion 4 tightly, finally make each part integrated form a fixed monomer after on leading truck 1.

Example one

As shown in fig. 4-6, the guide frame 1 includes two arranged up and down for externally fixing two kirschner wires, and each kirschner wire is fixed by two corresponding mounting positions of the kirschner wires, i.e. the fixing blocks 3, on the two guide frames 1.

Leading truck 1 is rectangular frame rack structure, is formed with slide 11 in its length direction, and it is equipped with two mounts 2 to slide to inlay in slide 11, and the distance between two mounts 2 is adjustable and can lock with leading truck 1, for guaranteeing the gliding stationarity of mount 2, has all seted up the guide way on two inside walls of slide 11, the both ends slidable of mount 2 is located the guide way. Inlay on each mount 2 and be equipped with a fixed block 3, fixed block 3 is rotatable on locating mount 2 with the help of pivot 31, pivot 31 sets up with the direction of regulation of mount 2 is perpendicular, and pivot 31 sets up along the width direction of leading truck 1 promptly, offers the perforation that supplies the ke shi needle to pass downwards on fixed block 3. Department 4 is held tightly to coaxial and detachable be fixed with in fenestrate top, and portion 4 is held tightly has a plurality of lamellas of holding tightly that the hoop interval set up, and a plurality of lamella of holding tightly leave the clearance that can be by extrusion deformation between the lamella, and a plurality of lamella of holding tightly upwards collect the aperture that forms can be less than the diameter of ke shi needle through the regulation of a locking portion to the realization is fixed holding tightly of ke shi needle.

Wherein, rotatable adjusting screw 12 that is equipped with the help of the bearing along its length direction on leading truck 1, threaded connection has two regulating blocks 21 on each adjusting screw 12, and two regulating blocks 21 are fixed with two mounts 2 that correspond respectively, and the direction of rotation of screw thread is opposite on two regulating blocks 21, and corotation or counter rotation adjusting screw 12 can realize that two mounts 2 are close to or keep away from to realize that the distance between two adjacent mounts 2 is adjustable and can lock with leading truck 1.

In this fixing device, two mounts 2, two fixed blocks 3 and two portions of holding tightly 4 are integrated to form an independent fixed monomer on leading truck 1, have two ke shi needle installation positions on each fixed monomer, realize the effective fixed to two ke shi needles through two fixed monomers.

When each fixing unit is installed, one of the Kirschner wires is used as a reference needle and is installed with the fixing unit, the fixing unit rotates around the reference needle to adapt to the front-back angular adjustment between the two Kirschner wires, the distance between the two fixing frames 2 can be adjusted to adapt to the distance adjustment between the two Kirschner wires, the fixing block 3 rotates through the rotating shaft 31 to adapt to the lateral angular adjustment between the two Kirschner wires, and therefore a proper angle is found to realize that one fixing unit is installed on the two Kirschner wires and is not limited by the driving angle of the Kirschner wires. The installation is such that another fixing unit is installed above.

Due to the arrangement of the upper fixing frame 2 and the lower fixing frame 2, the two fixing blocks 3 fixed on the same Kirschner wire are limited to rotate, the fixing blocks 3 are locked, the installation stability of the fixing device is guaranteed, each fixing block 3 does not need to be locked independently, the operation is convenient, the locking is firm and reliable, the bone position can be maintained, the fracture can be prevented from being displaced after reset, the malformation healing and infection can be effectively prevented, and the healing can be promoted.

In the device, hold portion 4 through setting up petal column structure and fix every kirschner wire, utilize the characteristic of holding the lamella tightly that can extrude to open and reverse holding tightly, realize the fixed to different diameter kirschner wires, make the device can be as an organic whole with many kirschner wires of different diameters simultaneously, do not receive the restriction of kirschner wire thickness, practical range is wide, and spreading value is high.

Example two

The difference from the first embodiment is that the guiding frame 1 at least includes three arranged up and down for externally fixing three kirschner wires. As shown in fig. 1-6, each kirschner wire is fixed by two corresponding mounting positions (i.e. fixing blocks 3) of the upper and lower guiding frames 1, the upper and lower guiding frames 1 are arranged at an included angle, and the three kirschner wires are connected in series by six fixing positions of the kirschner wires.

Leading truck 1 is rectangular frame rack structure, is formed with slide 11 in its length direction, and it is equipped with two mounts 2 to slide to inlay in slide 11, and the distance between two mounts 2 is adjustable and can lock with leading truck 1, for guaranteeing the gliding stationarity of mount 2, has all seted up the guide way on two inside walls of slide 11, the both ends slidable of mount 2 is located the guide way. Inlay on each mount 2 and be equipped with a fixed block 3, fixed block 3 is rotatable on locating mount 2 with the help of pivot 31, pivot 31 sets up with the direction of regulation of mount 2 is perpendicular, and pivot 31 sets up along the width direction of leading truck 1 promptly, offers the perforation that supplies the ke shi needle to pass downwards on fixed block 3. Department 4 is held tightly to coaxial and detachable fixed in fenestrate top, holds tightly that department 4 has a plurality of lamellas of holding tightly that the hoop interval set up, and a plurality of lamellas of holding tightly upwards collect the aperture that forms and can be less than the diameter of ke shi needle through the regulation of a locking portion to the realization is fixed holding tightly of ke shi needle.

In this fixing device, two mount 2, two fixed blocks 3 and two portions of holding tightly 4 are integrated to form an independent fixed monomer on leading truck 1, have two ke shi needle installation positions on each fixed monomer, realize the effective fixed to three ke shi needles through three fixed free cross arrangement.

EXAMPLE III

The difference from the first embodiment is that the guiding frame 1 at least includes two arranged up and down for externally fixing three kirschner wires. Each Kirschner wire is fixed by two corresponding Kirschner wire mounting positions (namely the fixing block 3) on the upper and lower guide frames 1, and the three Kirschner wires are fixed together by six Kirschner wire fixing positions.

As shown in fig. 7, three slideways 11 radially and circumferentially distributed around a certain point (preferably, near the center of the guiding frame 1) are disposed on the guiding frame 1, and each slideway 11 has a fixing frame 2 slidably disposed therein. The distance between every two fixing frames 2 is adjustable and can be locked with the guide frame 1, guide grooves are formed in two inner side walls of the slide rail 11 for guaranteeing the sliding stability of the fixing frames 2, and the two ends of the fixing frames 2 can slide in the guide grooves. Each fixing frame 2 is embedded with a fixing block 3, the fixing blocks 3 are rotatably arranged on the fixing frames 2 through rotating shafts 31, the rotating shafts 31 are perpendicular to the adjusting direction of the fixing frames 2, and through holes for the Kirschner wires to penetrate downwards are formed in the fixing blocks 3. Department 4 is held tightly to coaxial and detachable fixed in fenestrate top, holds tightly that department 4 has a plurality of lamellas of holding tightly that the hoop interval set up, and a plurality of lamellas of holding tightly upwards collect the aperture that forms and can be less than the diameter of ke shi needle through the regulation of a locking portion to the realization is fixed holding tightly of ke shi needle.

Wherein, a regulating screw 12 is rotatably arranged on each guide frame 1 along the length direction of each slideway 11, that is, three regulating screws 12 are arranged on each guide frame 1, the rotating shaft 31 is vertically arranged with the corresponding regulating screw 12, a regulating block 21 is in threaded connection with each regulating screw 12, and the regulating block 21 is fixed with the corresponding fixing frame 2.

In this fixing device, with mount 2, fixed block 3 and hold tight portion 4 integration and form two independent fixed monomers on each leading truck 1, have three ke shi needle installation position on each fixed monomer, realize the effective fixed to three ke shi needles through two fixed monomers (6 ke shi needle fixed positions).

When each fixing unit is installed, one of the Kirschner wires is used as a reference needle and is installed with the fixing unit, the fixing unit is enabled to rotate around the reference needle to adapt to the front-back angular adjustment between the Kirschner wires according to the positions of the other two Kirschner wires, the distance between the two adjacent fixing frames 2 can be adjusted to adapt to the distance adjustment between the two Kirschner wires, and the fixing block 3 is rotated through the rotating shaft 31 to adapt to the lateral angular adjustment between the Kirschner wires, so that a proper angle is found to realize that one fixing unit is installed on the three Kirschner wires and is not limited by the driving angle of the Kirschner wires.

Example four

On the basis based on above-mentioned three embodiment respectively, the outward appearance of portion 4 top of holding tightly is the circular cone mesa, locking portion includes locking cap 5 that the cover was established on holding tightly portion 4, the inner wall of locking cap 5 is the circular cone mesa equally, and the diameter of locking cap 5 inner wall upper end is less than the diameter on 4 tops of portion of holding tightly, moves down the circular cone on the usable locking cap 5 of locking cap 5 and extrudees portion 4 of holding tightly, makes the bore at 4 tops of portion of holding tightly reduce.

The diameter of the kirschner wire which is generally used is 2-4mm, so when the device is used, the diameter of the pore formed by the upward convergence of the holding petals can be less than 2mm at the lowest after the pore is locked, and the kirschner wire passes through and holds the kirschner wire by utilizing the characteristic that the holding petals can be squeezed to expand and hold the kirschner wire reversely. When clamping a thicker or thinner kirschner wire, the clasping part 4 can be disassembled and replaced.

Further, the surface below the clasping part 4 is a threaded cylindrical surface, the bottom of the locking cap 5 extends downwards to form a connecting sleeve connected with the clasping part 4 through threads, the locking cap 5 is driven to move downwards in a rotating mode, the position of the locking cap 5 can be guaranteed to be stable, and the stability of fixation of the kirschner wire is improved.

In addition, since the medical staff needs to wear the surgical gloves during the operation, in order to prevent slipping during the operation, a ribbed structure can be arranged on the part needing to be rotationally adjusted to increase friction, so as to facilitate the operation, for example, a rotating part with ribs is arranged on the adjusting section of the locking cap 5 and/or the adjusting screw 12.

EXAMPLE five

On the basis of four above-mentioned embodiments respectively, because the ke shi needle passes through the device fixed back, the convex part of ke shi needle needs to be cut out for short, receives external force collision for preventing the convex part of ke shi needle, consequently in fixed two leading truck 1 of same root ke shi needle, the upper surface that is located the leading truck 1 of top still detachable is fixed with the lag, the lag is around holding the setting of portion 4 of holding tightly and being higher than and hold portion 4 tightly.

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 (10)

1. The external fixing device of kirschner wire, its characterized in that includes:

the number of the guide frames (1) is not less than that of the Kirschner wires to be fixed, and the guide frames (1) are arranged up and down;

at least two fixing frames (2) are arranged on each guide frame (1), and the distance between every two adjacent fixing frames (2) is adjustable and can be locked with the guide frames (1);

each fixing frame (2) is provided with a fixing block (3), the fixing blocks (3) are rotatably arranged on the fixing frames (2) by means of rotating shafts (31), the rotating shafts (31) are perpendicular to the adjusting direction of the fixing frames (2), and the fixing blocks (3) are provided with through holes for downwards penetrating kirschner wires; and

the clasping part (4) is coaxially fixed above the through hole, the clasping part (4) is provided with a plurality of clasping petals which are arranged at intervals in the circumferential direction, and the aperture formed by upward convergence of the clasping petals can be smaller than the diameter of the Kirschner wire through the adjustment of a locking part;

each Kirschner wire is fixed by two corresponding fixing blocks (3) on the two guide frames (1).

2. The external kirschner wire fixing device according to claim 1, wherein the outer surface above the clasping portion (4) is a conical table surface, the locking portion comprises a locking cap (5) sleeved on the clasping portion (4), the inner wall of the locking cap (5) is also a conical table surface, and the diameter of the upper end of the inner wall of the locking cap (5) is smaller than the diameter of the top end of the clasping portion (4).

3. The external kirschner wire fixing device according to claim 2, wherein the outer surface below the clasping portion (4) is a threaded cylindrical surface, and a connecting sleeve in threaded connection with the clasping portion (4) extends downwards from the bottom of the locking cap (5).

4. The external kirschner wire fixing device according to claim 3, wherein the locking cap (5) has a rotating part with edges.

5. The external kirschner wire fixing device according to claim 1, wherein the guiding frame (1) is a rectangular frame structure, a slide way (11) is formed in the length direction of the guiding frame, and two fixing frames (2) are slidably arranged in the slide way (11).

6. The external fixator for kirschner wires according to claim 5, wherein the guide frame (1) is rotatably provided with adjusting screws (12) along the length direction thereof, each adjusting screw (12) is in threaded connection with two adjusting blocks (21), the two adjusting blocks (21) are respectively fixed with the two fixing frames (2), and the threads of the two adjusting blocks (21) are in opposite rotating directions.

7. The external kirschner wire fixing device according to claim 1, wherein the guide frame (1) is provided with three slideways (11) which are radially and annularly distributed and take a certain point as a circle center, and each slideway (11) is internally provided with a fixing frame (2) in a sliding way.

8. The external kirschner wire fixing device according to claim 7, wherein an adjusting screw (12) is rotatably arranged on the guide frame (1) along the length direction of each slideway (11), an adjusting block (21) is in threaded connection with each adjusting screw (12), and the adjusting block (21) is fixed with the corresponding fixing frame (2).

9. The external kirschner wire fixing device according to claim 5 or 7, wherein two inner side walls of the slideway (11) are provided with guide grooves, and two ends of the fixing frame (2) are slidably positioned in the guide grooves.

10. The external k-wire fixing device according to claim 1, characterized in that a protective sleeve is detachably fixed on the upper surface of the upper guide frame (1) of the two guide frames (1) for fixing the same k-wire, and the protective sleeve is arranged around the holding part (4) and is higher than the holding part (4).

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