Rapid fracture reduction device

Abstract

The invention discloses a fracture rapid reduction device, comprising two clasp assemblies, each clasp assemblies comprising a C-shaped clasp and a handle bar, one end of the handle bar being fixed to the middle of the C-shaped clasp, an upper arc-shaped slot and a lower arc-shaped slot, an upper screw hole and a lower screw hole being arranged on the C-shaped clasp, and a clamping nail being matched and installed in the upper and lower screw holes respectively, and a connecting screw and a locking nut being installed through the arc-shaped slot along the longitudinal direction. The invention firstly uses the long clamping nail and the short clamping nail on both sides to respectively lock the bone necks at both ends of the fracture, so that the two ends of the fracture are fixed as one with the corresponding C-shaped clasp. Then, a connecting screw and a locking nut are installed through the upper arc-shaped slot and the lower arc-shaped slot of the two C-shaped clasp respectively along the longitudinal direction, so that the rotation angle, swing angle, upper and lower dislocation and other operations of the two ends of the fracture can be adjusted through the handle bar and the handle, so that the fracture seams at both ends of the fracture are finally made to correspond.

Description

Technical Field

[0001] The invention belongs to the technical field of fracture positioning and fixing instruments, and in particular relates to a fracture site reduction device which can be easily and quickly adjusted and fixed. Background Art

[0002] Femoral shaft fracture and distal femoral fracture are common fractures in clinical practice. Surgical treatment is the preferred treatment method. Before intramedullary nail fixation and plate fixation, the two ends of the fracture site need to be reset, docked and fixed. Traction is an important means to reset femoral fractures and restore the length of the lower limbs. At present, the traction device used by various hospitals for the reset of patients with lower limb fractures mainly includes a traction rope and a pulley. One end of the traction rope is connected to the bracket at the fracture site, and the other end is passed around the pulley and then the weight is hung. The traction force is controlled by manually increasing the number of weights or changing the weight of the weights. Since the patient will move while lying on the bed, the traction force changes. Once the traction force changes, the weight of the weight should be adjusted. For the existing manual control method, frequent replacement of weights is extremely inconvenient, which not only adds burden to the work of hospital nurses, but also brings trouble to the reset of fracture patients. On the other hand, since one end of the traction rope is connected to the distal end of the fracture site and a large traction force is required, the distal end of the fracture can only be pulled along the direction of the traction rope. After the fracture, the distal and proximal ends of the fracture are usually staggered and twisted. The prior art uses rigid traction to pull the distal end of the fracture, which is not easy to rotate and swing the fracture, and thus cannot achieve the best reduction effect.

[0003] Obviously, the existing fracture reduction devices generally have the problems of complex structure, multiple operation steps, difficult control, and prolonged operation time. The existing operation method of simple traction reduction is to use two forceps to pull the two sides of the fracture. Due to the strong traction force of the bone, the operation force is large and difficult to control, which can easily cause bone damage. In addition, the holding force is unstable, the reduction is difficult, and the operation time is uncertain. Summary of the invention

[0004] In view of the problem that current fracture positioning and fixation devices generally use complex structures to achieve reduction and fixation, thus causing a variety of inconveniences in use, the present invention provides a fracture reduction device that can be held and quickly operated, and easily adjusted to reduce and lock, so as to achieve simple operation and rapid reduction and fixation, and can achieve a reduction function with the same effect.

[0005] The solution adopted by the present invention to solve its technical problems is: a rapid fracture reduction device, including two clamping ring assemblies, each clamping ring assembly includes a C-shaped clamping ring and a handle rod, one end of the handle rod is fixed to the middle part of the C-shaped clamping ring, an upper arc-shaped slide groove is provided on the upward arc-shaped arm in the middle part of the C-shaped clamping ring, and a lower arc-shaped slide groove is provided on the downward arc-shaped arm in the middle part of the C-shaped clamping ring, an upper screw hole is vertically provided at the end of the upper arc-shaped arm, a lower screw hole is vertically provided at the end of the lower arc-shaped arm, or a fixing pin is vertically provided at the end of the lower arc-shaped arm, the upper screw hole and the lower screw hole are respectively matched and installed with pins, and connecting screws are respectively installed in the upper arc-shaped slide groove and the lower arc-shaped slide groove of the two C-shaped clamping rings along the longitudinal direction, and locking nuts are respectively installed at the positions of each connecting screw located on both sides of the corresponding arc-shaped slider.

[0006] Preferably, a middle screw hole is arranged in the middle of the C-shaped clamp ring in the transverse direction, and the handle rod is threadedly installed in the middle screw hole. The end of the handle rod is located in the C-shaped clamp ring and is provided with a rod end clamp nail.

[0007] Spare connection holes may be further provided at the ends of the upper arc-shaped arm and the ends of the lower arc-shaped arm respectively along the longitudinal direction.

[0008] Wherein, the other end of the handle rod is fixed to the handle.

[0009] It can also be matched with a semicircular or multi-semicircular annular ferrule, one side of which is provided with a thread hole and equipped with a top screw.

[0010] The side surface of the connecting screw rod is provided with a milling plane. After the connecting screw rod is sleeved in the corresponding arc-shaped chute, the milling plane and the inner wall surface of each arc-shaped chute are matching surfaces.

[0011] The inner end of each locking nut is sleeved or provided with a spherical pad, so as to have a universal connection function, that is, no matter how the connecting screw rod swings in the arc-shaped slide groove, the locking nut containing the spherical pad can fix the connecting screw rod in the arc-shaped slide groove.

[0012] Beneficial effects: The present invention uses short staples to support the lower side of the bone, and adjusts the long staples to press the upper side of the bone, so that the long staples and short staples on both sides are used to lock the bone necks at both ends of the fracture respectively, so that the two ends of the fracture are fixed as one with the corresponding C-shaped clasps. Then, the upper arc-shaped slide groove and the lower arc-shaped slide groove of the two C-shaped clasps are respectively penetrated and installed with connecting screws and locking nuts along the longitudinal direction, so that the rotation angle, swing angle, upper and lower dislocation and other operations of the two ends of the fracture can be adjusted through the handle rod and the handle, so that the fracture seams at both ends of the fracture are finally made to correspond, and then the locking nuts are screwed to fix the two C-shaped clasps together, and the knob locking nuts can be further turned to pull the two ends of the fracture inward to dock. After adjusting in place and locking, the two handle rods can be removed respectively. The operation is simple and convenient, and the lever arm of the handle rod is long, so the adjustment is relatively labor-saving and controllable, and the effect of rapid operation and resetting can be achieved, which is suitable for steel plate reinforcement and intramedullary nail surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural schematic diagram of the present invention.

[0014] Figure 2 yes Figure 1 Stereoscopic diagram.

[0015] Figure 3 yes Figure 1 Schematic diagram of the side structure.

[0016] Figure 4 It is one of the structural schematic diagrams of the clamping ring (including the spare connecting hole).

[0017] Figure 5 It is a schematic diagram of the device of the present invention before installation.

[0018] Figure 6 It is a schematic diagram after the device of the present invention is installed.

[0019] Figure 7 This is a schematic diagram of the installation of the annular ferrule.

[0020] Figure 8 This is the second schematic diagram of the structure of the retaining ring.

[0021] Fig. 9 This is the third structural diagram of the retaining ring.

[0022] Fig.10 This is a schematic diagram of the use status of the retaining ring (including the spare connecting hole).

[0023] Fig.11 Is the connection relationship with a spherical washer lock nut ( Figure 8 Schematic diagram of BB cross section.

[0024] Fig.12 It is the section with the milling plane set on one side of the connecting screw ( Figure 1 AA section) structural schematic diagram.

[0025] Numbers in the figure: 1 is a C-type clamp, 1a is an upper arc arm, 1b is a lower arc arm, 2 is a short staple, 21 is a fixed staple, 3 is a long staple, 4 is a handle rod, 41 is a rod end staple, 5 is a handle, 6 is a connecting screw, 7 is a locking nut, 8a is an upper arc slide, 8b is a lower arc slide, 9 is a spare connecting hole, 10 is a middle screw hole, 11 is a side screw hole, 12 is a center line, 13 is an annular sleeve, 14 is a wire hole, 15 is a top wire, 16 is a bone body, 17 is a bone fragment, 18 is a spherical pad, 19 is an arc chamfer, and 20 is a milling plane. DETAILED DESCRIPTION

[0026] Embodiment 1: a kind of Figure 1 and Figure 2 The fracture rapid reduction device shown in the figure comprises two parallel arranged clasp assemblies, each clasp assembly comprising a C-shaped clasp 1, a handle rod and a clamping nail. One end of the handle rod is fixed to the middle of the C-shaped clasp, preferably a middle screw hole 10 is arranged in the middle of the C-shaped clasp along the horizontal direction, one end of the handle rod 4 is provided with a threaded section and is installed in the middle screw hole 10 by threading, and the other end of the handle rod 4 is vertically fixed to the handle 5.

[0027] like Figure 3 As shown, the C-type snap ring 1 is a symmetrical structure, and the handle bar 4 is located at the symmetry axis position, so that the upward part of the symmetry center line 12 of the C-type snap ring is the upper arc arm 1a, and the downward part is the lower arc arm 1b. The arc arm upward of the symmetry center line 12 of the C-type snap ring is provided with an upper arc groove 8a, and the arc arm downward in the middle of the C-type snap ring is provided with a lower arc groove 8b. On the basis of the above, the following can also be adopted: Figure 8 The structure shown, i.e., the end of the handle rod is located in a C-shaped clamping ring and is provided with a rod end clamping nail 41, which supports the rod end clamping nail 41 on the side of the bone body to prevent the handle rod 4 from swinging left and right.

[0028] At the same time, side screw holes 11 are respectively arranged at the ends of each arc-shaped arm, for example, an upper screw hole is arranged vertically at the end of the upper arc-shaped arm, and a lower screw hole is arranged vertically at the end of the lower arc-shaped arm. The upper screw hole and the lower screw hole are respectively matched with long clamps 3 and short clamps 2. When in use, two C-shaped clamps 1 are respectively put on the two ends of the fracture and a matching gap is maintained (the C-shaped clamps do not directly contact the bone part). The short clamps 2 are used to support the lower side of the bone, and the long clamps 3 are adjusted to press the upper side of the bone, so that the long clamps and short clamps on both sides are used to lock the bone necks at both ends of the fracture.

[0029] Connecting screws 6 are installed in the upper arc-shaped slide groove and the lower arc-shaped slide groove of the two C-shaped clamping rings 1 along the longitudinal direction, and locking nuts 7 are installed at the positions of the connecting screws 6 on both sides of the corresponding arc-shaped sliders.

[0030] After the C-shaped clamping rings 1 on both sides lock the two ends of the fracture respectively, the locking nuts 7 do not lock the connecting screws. Figure 5 Therefore, the rotation angle, swing angle, up and down dislocation and other operations of the two ends of the fracture can be adjusted through the handle rod and the handle, and finally the fractures at the two ends of the fracture are aligned. At this time, the locking nuts are screwed to fix the two C-shaped clamps together, such as Figure 6 As shown. The two ends of the fracture can be pulled inwards and docked by further turning the knob to lock the nut. As can be seen from the drawings, due to the large length of the handle rod, the force arm is long, and the adjustment is more labor-saving and controllable. After adjusting to the right position and locking, the two handle rods can be removed respectively. When the fracture is reduced and fixed by the fracture reduction device of the present invention, it has the effect of rapid operation and reduction, and is suitable for steel plate reinforcement and intramedullary nail surgery.

[0031] Embodiment 2: Based on Embodiment 1, spare connection holes 9 are respectively provided at the ends of the upper arc-shaped arm and the ends of the lower arc-shaped arm along the longitudinal direction. The spare connection holes can be used in a variety of ways, for example, one way of using is to connect a tension component between the spare connection holes of the two C-shaped snap rings, so that after adjusting the rotation angle, swing angle and misalignment of the two C-shaped snap rings 1, loosening the inner locking nut can make the two C-shaped snap rings automatically shrink inward to achieve flexible docking, and then adjust the locking nut to fix the two C-shaped snap rings as a whole. For example, another way of using is to fix an auxiliary adjustment rod in the spare connection hole for adjusting the handle rod, etc.

[0032] Embodiment 3: Based on Embodiment 1, it further comprises a semicircular or multi-semicircular annular sleeve 13, one side of which is provided with a thread hole 14 and a top thread 15. Figure 7 As shown, after the two ends of the fracture are repositioned and fixed by using Example 1, the comminuted bone fragments 17 can be fixed to the defective part of the bone body 16 by the annular sleeve, and the annular sleeve is pressed by the top screw, so that the annular sleeve can firmly restrain the bone fragments.

[0033] Embodiment 4: A Fig. 9 The fracture rapid reduction device shown in the figure has two clamp ring assemblies, both of which include a C-shaped clamp ring and a handle rod, wherein a central screw hole is arranged in the middle of the C-shaped clamp ring in a transverse direction, and the handle rod is threadedly installed in the central screw hole. The end of the handle rod is located in the C-shaped clamp ring and is provided with a rod end clamp 41.

[0034] An upper arc-shaped slide groove is arranged on the arc-shaped arm extending upward in the middle of the C-shaped clamp ring, and a lower arc-shaped slide groove is arranged on the arc-shaped arm extending downward in the middle of the C-shaped clamp ring.

[0035] An upper screw hole is vertically arranged at the end of the upper arc-shaped arm, and a fixing nail 21 is vertically arranged at the end of the lower arc-shaped arm. A long nail 3 is matched and installed in the upper screw hole as an adjustment nail.

[0036] It can be seen that the fixing staple 21, the rod end staple 41 and the long staple 3 (adjusting staple) are three components that are in direct contact with the bone body 16. While fixing the bone body 16, the handle rod 4 is stably connected to the bone body 16 and can rotate or swing with the bone body 16.

[0037] Embodiment 5: Based on Embodiment 1 or Embodiment 4, after each C-type clasp is fixed at both ends of the fracture site, when adjusting, connecting screws are installed in the upper arc-shaped slide groove and the lower arc-shaped slide groove of the two C-type clasps respectively along the longitudinal direction, and locking nuts are installed at the positions of the connecting screws on both sides of the corresponding arc-shaped slider. After adjustment, in order to improve the connection acceptance balance between the two C-type clasps, the spare connecting hole 9 can be used to connect with the arc-shaped slide groove, such as Fig.10 This situation occurs when the two C-shaped snap rings have a large rotation angle, and the two connecting screws 6 are basically located at the two ends of the diameter of the C-shaped snap ring 1 through the spare connection hole of one C-shaped snap ring and the arc-shaped slide groove of the other C-shaped snap ring.

[0038] Embodiment 6: Based on Embodiment 1 or Embodiment 4, Fig.12 As shown, there is a milling plane 19 on the side of the connecting screw, and after the connecting screw is sleeved in the corresponding arc-shaped slot, the milling plane and the inner wall surface of each arc-shaped slot are the matching surface. Therefore, when the knob is arbitrarily locked with the nut, the connecting screw will not rotate therewith.

[0039] Embodiment 7: Based on Embodiment 1 or Embodiment 4, Fig.11 As shown, two C-shaped snap rings 18 are set or provided on the inner end of each locking nut, so as to have a universal connection function. That is, no matter how the connecting screw rod swings in the arc-shaped slide groove, the locking nut with the spherical pad can fix the connecting screw rod in the arc-shaped slide groove. It can be seen that after the two C-shaped snap rings are connected and fixed by the connecting screw rod, even if the connecting screw rod tilts, it is still fixedly connected.

Claims

1. A fracture rapid reduction device, characterized in that: The invention comprises two clamp ring assemblies, each clamp ring assembly comprises a C-shaped clamp ring and a handle rod, one end of the handle rod is fixed to the middle part of the C-shaped clamp ring, an upper arc-shaped slide groove is arranged on the arc-shaped arm extending upward from the middle part of the C-shaped clamp ring, a lower arc-shaped slide groove is arranged on the arc-shaped arm extending downward from the middle part of the C-shaped clamp ring, an upper screw hole is arranged vertically on the end part of the upper arc-shaped arm, a lower screw hole is arranged vertically on the end part of the lower arc-shaped arm, or a fixing nail is arranged vertically on the end part of the lower arc-shaped arm, a long nail and a short nail are respectively matched and installed in the upper screw hole and the lower screw hole, the short nail is used to support the lower side of the bone, and the long nail is adjusted to press the upper side of the bone, so that the long nails and the short nails on both sides are used to fix the two fractures respectively. The bone neck at the end is locked; connecting screws are installed in the upper arc-shaped slide groove and the lower arc-shaped slide groove of the two C-shaped clamps respectively through the longitudinal direction, and locking nuts are installed at the positions of the connecting screws located on both sides of the corresponding arc-shaped slide grooves; when the C-shaped clamps on both sides lock the two ends of the fracture respectively, the locking nuts do not lock the connecting screws at this time, and the rotation angle, swing angle, and up and down misalignment operations at the two ends of the fracture can be adjusted through the handle rod, so that the fractures at the two ends of the fracture are finally made to correspond, and then the locking nuts are screwed again to fix the two C-shaped clamps together; the knob locking nut is used to pull the two ends of the fracture inward for docking; after adjusting to the right position and locking, the two handle rods can be removed respectively.

2. The fracture rapid reduction device according to claim 1, characterized in that: A middle screw hole is arranged in the middle of the C-shaped clamping ring along the transverse direction, and the handle rod is threadedly installed in the middle screw hole.

3. The fracture rapid reduction device according to claim 2, characterized in that: The end of the handle rod is located in a C-shaped clamping ring and is provided with a rod end clamping nail.

4. The fracture rapid reduction device according to claim 1, characterized in that: Spare connection holes are respectively arranged at the end of the upper arc-shaped arm and the end of the lower arc-shaped arm along the longitudinal direction.

5. The fracture rapid reduction device according to claim 1, characterized in that: The other end of the handle bar is fixed to the handle.

6. The fracture rapid reduction device according to claim 1, characterized in that: It also includes a semicircular or multi-semicircular annular ferrule, one side of which is provided with a thread hole and is installed with a top thread.

7. The fracture rapid reduction device according to claim 1, characterized in that: The side surface of the connecting screw rod is provided with a milling plane. After the connecting screw rod is sleeved in the corresponding arc-shaped chute, the milling plane and the inner wall surface of each arc-shaped chute are matching surfaces.

8. The fracture rapid reduction device according to claim 1, characterized in that: The inner end of each locking nut is sleeved or provided with a spherical pad.

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