Telescopic distal radius combined steel plate

Abstract

The invention discloses a telescopic distal radius combined steel plate, which comprises a distal end part, a first locking hole, a second locking hole, a second locking hole, a first steel plate, a second steel plate and a third steel plate, and is characterized in that the distal end part is provided with a first locking hole and a second locking hole; the near end part is provided with at least one third locking hole; wherein one end, close to the near-end part, of the far-end part is provided with a sliding guide part, one end, close to the far-end part, of the near-end part is in sliding connection with the sliding guide part, and the near-end part is movably arranged close to or far away from the far-end part. Through the application of the telescopic distal radius combined steel plate, the adjustment action on the steel plate in an operation is effectively reduced, the fracture area of a patient can be accurately fixed through the telescopic capacity of the combined steel plate, secondary injury to the patient is avoided, and postoperative recovery of the patient is better facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a telescopic distal radius combined steel plate. Background Art

[0002] Steel plates are one of the most widely used consumables in orthopedic surgery and are usually used to fix fractures. Distal radius fracture is one of the most common fractures, and most distal radius fractures require internal fixation with steel plates.

[0003] In the prior art, medical staff usually use Kirschner wires or screws to temporarily fix the steel plate during open reduction and internal fixation of distal radius fractures. If the position of the steel plate needs to be adjusted, the medical staff will remove the Kirschner wires or screws and readjust the position of the steel plate, and then temporarily fix the steel plate again until the steel plate is fixed to the ideal position. However, if the number of adjustments is too many, it is very easy to cause the patient's fracture reduction to be lost, thereby causing secondary harm to the patient, increasing the patient's pain, and wasting the time of medical staff. In another case, comminuted distal radius fractures and old distal radius fractures are often accompanied by a loss of radius height, and the existing steel plate cannot quickly and accurately restore the height of the radius. Summary of the invention

[0004] In view of this, in order to solve the above problems, the object of the present invention is to provide a retractable distal radius combined steel plate, comprising:

[0005] A distal end portion, wherein the distal end portion is provided with a first locking hole and a second locking hole;

[0006] A proximal portion, wherein at least one third locking hole is provided on the proximal portion;

[0007] Among them, an end of the distal end portion close to the proximal end portion is provided with a sliding guide portion, an end of the proximal end portion close to the distal end portion is slidably connected to the sliding guide portion, and the proximal end portion can be movably arranged close to or away from the distal end portion.

[0008] In another preferred embodiment, the sliding guide portion is a sliding groove, the sliding groove is opened on the distal end portion, and the proximal end portion is slidably disposed in the sliding groove.

[0009] In another preferred embodiment, the proximal portion is a sliding block, the sliding block is slidably disposed in the sliding groove, and the third locking hole is disposed on the sliding block.

[0010] In another preferred embodiment, the sliding block is provided with a threaded hole, and the threaded hole is used to cooperate with a screw.

[0011] In another preferred embodiment, it also includes: two baffles, one side of the two baffles is respectively arranged on both sides of the sliding groove, the other sides of the two baffles are extended in a direction approaching each other, the two baffles are both arranged on the outside of the sliding block, and the third locking hole is arranged between the two baffles.

[0012] In another preferred embodiment, the sliding guide portion is two sliding rods, one end of each of the sliding rods is fixedly connected to one end of the distal portion, and the other ends of each of the sliding rods can be slidably extended into the proximal portion.

[0013] In another preferred embodiment, two telescopic holes are opened at one end of the proximal portion, and each of the sliding rods can be slidably disposed in one of the telescopic holes.

[0014] In another preferred embodiment, each of the baffles is provided with a first scale, and the first scale is used to observe the sliding distance of the slider in the sliding groove.

[0015] In another preferred embodiment, a second scale is provided on each of the two sliding rods, and the second scale is used to observe the relative distance between the proximal end portion and the distal end portion.

[0016] In another preferred embodiment, it further includes: a first locking screw, a second locking screw and a third locking screw, wherein the first locking screw matches the first locking hole, the second locking screw matches the second locking hole, the third locking screw matches the third locking hole, and the third locking screw matches the third locking hole.

[0017] Due to the adoption of the above technical solution, the present invention has the following positive effects compared with the prior art:

[0018] Through the application of the present invention, a retractable combined distal radius steel plate is provided, which effectively reduces the adjustment action of the steel plate during surgery. The fracture area of ​​the patient can be accurately fixed through the retractable ability of the combined steel plate. For comminuted fractures of the distal radius and old distal radius fractures with loss of radius height, the use of this steel plate can simply, quickly and accurately restore the height of the radius and complete bone grafting and fixation, avoiding secondary injury to the patient and being more conducive to the patient's recovery after surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of a retractable distal radius combined steel plate of the present invention when the sliding guide portion is a sliding groove;

[0020] Figure 2 This is a structural diagram of a retractable distal radius combined steel plate of the present invention, in which the sliding guide portion is a sliding rod;

[0021] Figure 3 The present invention is a side view of a retractable distal radius combined steel plate in which the sliding guide portion is a sliding groove.

[0022] In the attached figure:

[0023] 100, distal end portion; 110, first locking hole; 120, second locking hole; 130, fourth locking hole; 200, proximal end portion; 300, sliding guide portion; 400, third locking hole; 500, threaded hole; 600, baffle plate; 700, sliding rod. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In the description of the present invention, it is necessary to understand that the orientation or position relationship indicated by the terms such as "upper", "lower", "left", "right", "inside", "outside", "front", "back", "lateral" and "vertical" is based on the orientation or position relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention, rather than indicating or implying that the device or original referred to must have a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] It should be specially explained that the “horizontal” and “vertical” in the present invention are used to illustrate the approximate positional relationship, rather than a strict “horizontal plane” or “vertical plane”.

[0027] like Figure 1 to Figure 2 As shown, a retractable distal radius combined steel plate of a preferred embodiment is shown, comprising: a distal portion 100, on which a first locking hole 110 and a second locking hole 120 are arranged; a proximal portion 200, on which at least one third locking hole 400 is arranged; wherein, a sliding guide portion 300 is arranged at one end of the distal portion 100 close to the proximal portion 200, and an end of the proximal portion 200 close to the distal portion 100 is slidably connected to the sliding guide portion 300, and the proximal portion 200 can be movably arranged close to or away from the distal portion 100.

[0028] Further, as a preferred embodiment, the number of the third locking holes 400 is preferably one to five.

[0029] Further, as a preferred embodiment, there is a palm inclination angle between the extension direction of the distal portion 100 and the extension direction of the proximal portion 200, and the palm inclination angle facilitates the distal portion 100 to fit the radius. Further, the palm inclination angle is preferably 15°, see Figure 1 As shown, the up-down direction of the paper surface is the above-mentioned extension direction, and the palm inclination angle is formed by being inclined relative to the direction of the paper surface.

[0030] Further, as a preferred embodiment, the sliding guide portion 300 is a sliding groove, which is opened on the distal end portion 100, and the proximal end portion 200 is slidably disposed in the sliding groove.

[0031] Further, as a preferred embodiment, the first locking hole 110 and the second locking hole 120 are respectively disposed on both sides of the sliding groove.

[0032] Further, as a preferred embodiment, the proximal portion 200 is a sliding block, the sliding block is slidably disposed in the sliding groove, and a third locking hole 400 is disposed on the sliding block.

[0033] Further, as a preferred embodiment, a threaded hole 500 is provided on the slider, and the threaded hole 500 is used to cooperate with a screw. Further, the screw and the threaded hole 500 cooperate to fix the proximal portion 200 on the radial shaft, so that the medical staff can adjust the distance between the proximal portion 200 and the distal portion 100.

[0034] Further, as a preferred embodiment, a plurality of third locking holes 400 are sequentially arranged along the length direction of the proximal portion 200 , and the threaded hole 500 is arranged between two adjacent third locking holes 400 .

[0035] Furthermore, as a preferred embodiment, it also includes: two baffles 600, one side of the two baffles 600 is respectively arranged on both sides of the sliding groove, the other sides of the two baffles 600 are extended in a direction approaching each other, the two baffles 600 are both arranged on the outside of the sliding block, and the third locking hole 400 is arranged between the two baffles 600.

[0036] Further, as a preferred embodiment, the baffle 600 is disposed at an end of the distal end 200 away from the radius, such as Figure 1 As shown, the baffle 600 is disposed on the upper surface of the distal end portion.

[0037] Further, as a preferred embodiment, a first scale is provided on each baffle 600. Further, the first scale is used to observe the sliding distance of the slider in the sliding groove.

[0038] Further, as a preferred embodiment, the sliding guide part 300 is two sliding rods 700, one end of the two sliding rods 700 is fixedly connected to one end of the distal end 100, and the other end of the two sliding rods 700 can be slidably extended into the proximal end 200.

[0039] Furthermore, as a preferred embodiment, two telescopic holes are opened at one end of the proximal portion 200, and each sliding rod 700 can be slidably disposed in a telescopic hole.

[0040] Further, as a preferred embodiment, a second scale is provided on each of the two sliding rods 700. Further, the second scale is used to observe the relative distance between the proximal portion 200 and the distal portion 100.

[0041] Further, as a preferred embodiment, the shape of the sliding rod 700 is preferably a cylinder, a quadrangular prism, or a hexagonal prism.

[0042] Further, as a preferred embodiment, it further comprises: a first locking screw, a second locking screw and a third locking screw, the first locking screw matches the first locking hole 110, the second locking screw matches the second locking hole 120, the third locking screw matches the third locking hole 400, and the third locking screw matches the third locking hole 400. Further, the first locking hole 110 is used for inserting the first locking screw, the second locking hole 120 is used for inserting the second locking screw, and the third locking hole 400 is used for inserting the third locking screw.

[0043] Further, as a preferred embodiment, it further comprises: a plurality of fourth locking holes 130, and the plurality of fourth locking holes 130 are arranged at the upper end of the distal end portion 100. Figure 1 to Figure 2 As shown, a plurality of fourth locking holes 130 are sequentially arranged at intervals from left to right at the upper end of the distal end portion 100 .

[0044] Further, as a preferred embodiment, each fourth locking hole 130 adopts a tapered hole structure, and the tapered hole structure preferably has a taper of 15°, so that medical personnel can adjust the angle of the fourth screw inserted into the radius according to the patient's fracture condition.

[0045] Furthermore, as a preferred embodiment, it further comprises: a plurality of fourth locking screws, each of which matches a fourth locking hole 130. Furthermore, the fourth locking hole 130 is used for inserting the fourth locking screw.

[0046] Further, as a preferred embodiment, the first locking hole 110 , the second locking hole 120 , the third locking hole 400 , and the fourth locking hole 130 are all threaded locking holes.

[0047] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention.

[0048] The present invention also has the following implementation modes based on the above:

[0049] In a further embodiment of the present invention, the retractable distal radius combined steel plate also needs to be used in conjunction with a distraction tool. Furthermore, the distraction tool is preferably a clamp body that can be used to extend or shorten the combined steel plate.

[0050] Specifically, the medical staff inserts the two jaws of the distraction tool into the third locking hole 400 and the fourth locking hole 130 respectively, and applies force to the distraction tool to make the two jaws approach or move away from each other, thereby driving the distal end 100 and the proximal end 200 to gradually approach or move away.

[0051] In a further embodiment of the present invention, when the retractable distal radius combined steel plate is fixed, the first locking screw, the third locking screw and the second locking screw need to be fixed in sequence, and then the medical staff performs secondary reinforcement on the proximal portion 200 through the fourth locking screw.

[0052] In a further embodiment of the present invention, when the telescopic distal radius combined steel plate is fixed, the distal end 100 cannot be placed beyond the distal radius watershed to prevent the screw from entering the joint cavity and prevent damage to the joint capsule ligaments.

[0053] The specific operation steps of the retractable distal radius combined steel plate of the present invention are as follows:

[0054] like Figure 1 As shown, when the sliding guide portion 300 is a sliding groove, the operation steps of the telescopic distal radius combined steel plate are:

[0055] When the patient has not lost radial height:

[0056] First, the medical staff resets the fracture area of ​​the patient and fixes the radius fracture area with a Kirschner needle; then, the medical staff fixes the proximal portion 200 to the radial shaft of the patient with a screw through the threaded hole 500, and places the distal portion 100 at the distal end of the radius according to the fracture situation of the patient. The medical staff adjusts the distance between the proximal portion 200 and the distal portion 100. When the proximal portion 200 and the distal portion 100 are moved to a suitable position, the medical staff sequentially inserts the first locking screw, the third locking screw, and the second locking screw at the corresponding position of the radius, and finally, the medical staff completes the secondary fixation of the distal portion 100 with the fourth locking screw. At this point, the fixation of the telescopic distal radius combined steel plate is completed.

[0057] Fresh comminuted fractures of the distal radius and old fractures of the distal radius are often accompanied by loss of radius height. When the patient has loss of radius height:

[0058] The area where the radius height is lost is the bone defect area; for the above two fracture situations, first, the medical staff roughly repositions the distal radius fracture, and then temporarily fixes it with a Kirschner wire. The medical staff then measures and records the data of the radius height loss, and then the medical staff fixes the proximal portion 200 and the distal portion 100 on the radius. The operation of fixing the proximal portion 200 and the distal portion 100 is similar to the above; after the medical staff pulls out the Kirschner wire, they use a distraction tool to distract the proximal portion 200 and the distal portion 100 to extend the combined steel plate, thereby separating the distal end of the fracture and the proximal end of the fracture, and accurately restore the radius height according to the previously measured data of the radius height loss, and finally lock the screws to prevent the radius from shortening and shifting again; the fracture area is fixed and the bone defect area is clearly visible through the cooperation of the proximal portion 200 and the distal portion 100, and the medical staff implants an appropriate amount of artificial bone into the bone defect area according to the previously recorded data.

[0059] When the sliding guide part 300 is a sliding rod 700 , the operation steps are similar to those described above and will not be repeated here.

[0060] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A retractable distal radius combined steel plate, characterized in that: include: A distal end portion, wherein the distal end portion is provided with a first locking hole and a second locking hole; A proximal portion, wherein at least one third locking hole is provided on the proximal portion; Among them, an end of the distal portion close to the proximal portion is provided with a sliding guide portion, an end of the proximal portion close to the distal portion is slidably connected to the sliding guide portion, and the proximal portion can be movably arranged close to or away from the distal portion.

2. The retractable distal radius combined steel plate according to claim 1, characterized in that: The sliding guide portion is a sliding groove, the sliding groove is opened on the distal end portion, and the proximal end portion is slidably disposed in the sliding groove.

3. The retractable distal radius combined steel plate according to claim 2, characterized in that: The proximal portion is a sliding block, the sliding block is slidably disposed in the sliding groove, and the third locking hole is disposed on the sliding block.

4. The retractable distal radius combined steel plate according to claim 3, characterized in that: The sliding block is provided with a threaded hole, and the threaded hole is used to cooperate with a screw.

5. The retractable distal radius combined steel plate according to claim 3, characterized in that: Also includes: Two baffles, one side of the two baffles is respectively arranged on both sides of the sliding groove, the other sides of the two baffles are extended in a direction approaching each other, the two baffles are both arranged on the outside of the sliding block, and the third locking hole is arranged between the two baffles.

6. The retractable distal radius combined steel plate according to claim 1, characterized in that: The sliding guide part is two sliding rods, one end of each of the sliding rods is fixedly connected to one end of the distal end, and the other ends of each of the sliding rods can be slidably extended into the proximal end.

7. The retractable distal radius combined steel plate according to claim 6, characterized in that: One end of the proximal portion is provided with two telescopic holes, and each of the sliding rods can be slidably disposed in one of the telescopic holes.

8. The retractable distal radius combined steel plate according to claim 3, characterized in that: A first scale is provided on each of the baffles, and the first scale is used to observe the sliding distance of the slider in the sliding groove.

9. The retractable distal radius combined steel plate according to claim 6, characterized in that: A second scale is provided on each of the two sliding rods, and the second scale is used to observe the relative distance between the proximal end portion and the distal end portion.

10. The retractable distal radius combined steel plate according to claim 1, characterized in that: Also includes: A first locking screw, a second locking screw and a third locking screw, the first locking screw matches the first locking hole, the second locking screw matches the second locking hole, the third locking screw matches the third locking hole, and the third locking screw matches the third locking hole.

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