Steel plate fixing assembly

Abstract

The utility model discloses a steel plate fixing assembly which comprises a steel plate and a fixing part, the fixing part is suitable for pressing the steel plate on the bone of a patient, a positioning structure is formed between the fixing part and the steel plate in a matched mode, and when the fixing part presses the steel plate, the positioning structure is located on the bone of the patient. The positioning structure is suitable for keeping the steel plate and the fixing part relatively static; the steel plate comprises a plurality of locking hole sites and a plurality of pre-fixing hole sites, the fixing part comprises a plurality of protruding positioning parts, and the positioning parts and the pre-fixing hole sites are matched and connected in an abutting mode to form the positioning structure. The positioning structure can limit the steel plate before the steel plate is introduced into a bone nail, so that the steel plate and the fixing part cannot move and are relatively static, and the steel plate is not easy to move when the steel plate is fixed on a bone by the fixing part, so that accurate fixation of the steel plate is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a steel plate fixing assembly. Background Art

[0002] As a medical method for treating fractures, plate internal fixation is currently widely used by various medical institutions. During this operation, the plate needs to be placed in a suitable position first, and then fixed with bone screws. Since the existing plate clamping tools need to adjust the plate multiple times to reach the correct position, and the clamping tools and the plate are usually fixed by contact and compression, the plate is very easy to slide during the operation, which further increases the difficulty of adjusting the position of the plate.

[0003] Therefore, in order to ensure that the clamping tool prevents the steel plate from moving after clamping the steel plate, we propose a steel plate fixing assembly. Summary of the invention

[0004] The purpose of the present application is to provide a steel plate fixing assembly that facilitates the positioning of the steel plate.

[0005] In order to achieve the above purpose, the technical solution adopted in the present application is: a steel plate fixing assembly, comprising a steel plate and a fixing part, wherein the fixing part is suitable for pressing the steel plate against the patient's bone, and a positioning structure is formed between the fixing part and the steel plate. When the fixing part presses the steel plate, the positioning structure is suitable for keeping the steel plate and the fixing part relatively still.

[0006] Furthermore, the steel plate includes a plurality of locking holes and a plurality of pre-fixing holes, each of the locking holes and the pre-fixing holes is provided with a corresponding countersunk hole, the pre-fixing hole is arranged at an end away from the patient's bone fracture, and the fixing portion includes a plurality of protruding positioning portions, and the plurality of positioning portions cooperate and abut with the plurality of pre-fixing holes to form the positioning structure.

[0007] Furthermore, the positioning portion includes a positioning column and a fitting portion, the positioning column fits with the countersunk hole wall at the top of the pre-fixed hole position, and the fitting portion fits with the hole wall of the pre-fixed hole position.

[0008] Preferably, the positioning portion further includes a telescopic column and a spring, the positioning column is connected to the fixing portion via the telescopic column, and the spring is disposed between the fixing portion and the positioning column.

[0009] Preferably, the positioning portion is conical, and when the positioning portion is inserted into the pre-fixing hole, an interference fit is formed, and the positioning portion abuts against the top of the pre-fixing hole.

[0010] Preferably, the fixing portion is configured as a fixing clamp, and the fixing clamp comprises a pair of movable rods, a hinged portion and a pair of clamping arms, and the clamping arms located at the top are provided with the positioning portion.

[0011] Further preferably, a return spring is provided between the pair of movable rods, and the return spring causes the pair of clamping arms to have a tendency to move closer together in a natural state.

[0012] Preferably, the clamping arm at the bottom is provided with a sponge block, and the sponge block is suitable for being deformed under pressure when fixing the steel plate.

[0013] Preferably, the fixing portion is provided with an installation groove, a plurality of sliders are slidably arranged in the installation groove, a plurality of the positioning portions are respectively mounted on the plurality of sliders, and an interference fit is formed between the sliders and the installation groove when the sliders are mounted.

[0014] Preferably, the pre-fixing hole is far away from the locking hole, and when the fixing part presses the steel plate against the patient's bone, the fixing part does not interfere with the locking hole.

[0015] Compared with the prior art, the beneficial effects of this application are:

[0016] The positioning structure can limit the steel plate before it is introduced into the bone screw, so that the steel plate and the fixing part cannot move and are relatively still. Therefore, when the fixing part fixes the steel plate to the bone, the steel plate is not easy to move, thereby ensuring accurate fixation of the steel plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a structural diagram of the fixed part.

[0019] Figure 3 It is a schematic diagram of the structure of the enlarged fixed part and the first positioning part.

[0020] Figure 4 It is a schematic diagram of the structure of the enlarged fixed part and the second positioning part.

[0021] Figure 5 It is a cross-sectional view of the cooperation between the positioning part and the pre-fixing hole.

[0022] Figure 6 It is a structural schematic diagram of the second positioning part after the slider is added.

[0023] Figure 7 yes Figure 1 Side view of.

[0024] Figure 8 It is a structural diagram of the steel plate.

[0025] In the figure: 1. Affected bone; 2. Steel plate; 21. Locking hole; 22. Pre-fixing hole; 3. Fixing part; 31. Handle; 32. Movable rod; 33. Clamping arm; 34. Clamping part; 35. Positioning structure; 351. First positioning part; 352. Second positioning part; 37. Sponge block; 4. Spring; 6. Fitting part; 7. Slider; 8. Mounting groove. DETAILED DESCRIPTION

[0026] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0029] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0030] Embodiment 1:

[0031] Reference Figure 1-8 The present embodiment provides a steel plate fixing assembly, including a steel plate 2 and a fixing portion 3, wherein the fixing portion 3 is adapted to press the steel plate 2 onto the patient's bone, and a positioning structure 35 is formed between the fixing portion 3 and the steel plate 2. When the fixing portion 3 presses the steel plate 2, the positioning structure 35 is adapted to keep the steel plate 2 and the fixing portion 3 relatively still. Figure 1As shown, the right end of the steel plate 2 is the repair end, which corresponds to the position where the patient's bone injury occurs. Bone screws are implanted in this part to correct the position of the bone, thereby facilitating its recovery to form callus; only the position where the left end of the bottom is fixed by the fixing part 3 is the fixing end, and there is a certain interval between this end and the bone affected part. During the operation, the operator fits the steel plate 2 to the patient's bone and uses the fixing part 3 to press it to limit the movement of the steel plate 2. At the same time, due to the setting of the positioning structure 35, the steel plate 2 cannot move, that is, the fixing part 3 and the steel plate 2 remain relatively still. When the steel plate 2 assembly is pressed against the bone injury as a whole, the fixing part 3 is pressed against the bone to fix the steel plate 2. When the steel plate 2 is fixed, it is not easy to move, so that the steel plate 2 is stable in the fixed position, thereby ensuring the accuracy of the steel plate 2 when fixed. The steel plate 2 is accurately fixed. After the bone screws are introduced, the damaged bone is accurately positioned, which helps the patient's recovery. Refer to Figure 1 , showing the positional relationship among the steel plate 2, the fixing part 3 and the affected bone 1.

[0032] In this embodiment, the steel plate 2 includes a plurality of locking holes 21 and a plurality of pre-fixing holes 22. The locking holes 21 and the pre-fixing holes 22 are both provided with corresponding countersunk holes. Countersunk holes are a common method for implanting bone screws to assist in treatment in the art. The pre-fixing holes 22 are arranged at the end away from the fractured bone of the patient, i.e. Figure 1 The fixing portion 3 includes a plurality of protruding positioning portions, and the plurality of positioning portions cooperate with the plurality of pre-fixed holes 22 to form a positioning structure 35. Specifically, the position where the positioning portion abuts is the top of the countersunk hole in the pre-fixed hole 22, which can be referred to Figure 5 .

[0033] Reference Figure 2 In this embodiment, the fixing part 3 is set as a fixing clamp, which is also a fixing structure commonly used in the art. Obviously, the fixing clamp includes a handle 31, a pair of movable rods 32, a hinged part and a pair of clamping arms 33. Unlike the existing fixing clamp, the clamping arm 33 at the top is equipped with a positioning part. After the positioning part is installed, when the steel plate 2 is fixed, a positioning structure 35 is formed between the positioning part and the pre-fixing hole 22, thereby preventing the steel plate 2 from moving or rotating, and effectively ensuring the stability of the steel plate 2 when fixed by the fixing clamp. Of course, the fixing clamp can also be other structures for fixing the steel plate 2, and the same function can be achieved by simply adding a positioning part at the position corresponding to the pre-fixing hole 22.

[0034] As a preferred embodiment, refer to Figure 2 and Figure 5 The positioning part includes a positioning column and a fitting part 6, which form a convex insertion structure. The positioning column fits with the countersunk hole wall at the top of the pre-fixed hole 22. Figure 5The fitting portion 6 is fitted with the hole wall of the pre-fixed hole 22. Figure 5 For the sake of convenience in illustration, the outer diameter of the fitting portion 6 and the inner diameter of the bottom of the pre-fixed hole 22 do not fit together, but this does not affect understanding. When fitting together, the bottom surface of the positioning column will be limited in the countersunk hole. Obviously, there are multiple positioning portions, taking the minimum of two as an example. When the two pre-fixed holes 22 are fitted with positioning portions at the same time, the steel plate 2 cannot be moved or rotated, so a relatively stable fixing effect can be guaranteed. Of course, in this embodiment, when the clamping portion 34 is fixed to the steel plate 2, the two also have a clamping effect of compression, and the above-mentioned limiting structure is used to strengthen the clamping effect.

[0035] For further reference, Figure 3 The positioning part here is the first positioning part 351, and the first positioning part 351 also includes a telescopic column (not marked in the figure) and a spring 4. The above-mentioned positioning column is connected to the fixing part 3 through the telescopic column, specifically, the telescopic column is fixedly connected to the clamping part 34, wherein the clamping part 34 is the part of the outer end of the clamping arm 33 used for clamping, and the spring 4 is arranged between the fixing part 3 and the positioning column, and the spring 4 is sleeved on the outer end of the telescopic column; when the fixing part 3 is compressed, it is obvious that due to the buffering effect of the telescopic column and the spring 4, the first positioning part 351 can move up and down at this time, and the operator can have a more obvious perception when the fixing part 3 compresses the steel plate 2, thereby facilitating the operator to use the fixing part 3 to clamp the steel plate 2. At the same time, due to the buffering effect of the spring 4, excessive force can be prevented at the fixing part 3, so as to prevent further damage to the patient's originally damaged bones during fixation.

[0036] As another preferred embodiment of the positioning portion, Figure 4 As shown, the positioning portion is a conical second positioning portion 352. When the second positioning portion 352 is inserted into the pre-fixed hole 22, an interference fit is formed and abuts against the top of the pre-fixed hole 22. Obviously, when the conical second positioning portion 352 is inserted, the conical side surface of the second positioning portion 352 finally produces a mutual interference fit with the hole wall of the pre-fixed hole 22. When it is inserted to a certain extent, it can be understood that an abutment effect is produced. The positioning portion provided in this embodiment can also facilitate the fixation of the steel plate 2. At the same time, the structure corresponding to the spring 4 and the telescopic rod in the previous paragraph can also be similarly used in the second positioning portion 352.

[0037] In order to facilitate the use of fixing pliers to fix the steel plate 2, a reset spring is provided between a pair of movable rods 32. The reset spring makes the pair of clamping arms 33 tend to move closer together in a natural state, that is, the reset spring makes the fixing pliers in the clamping state in the initial state. When in use, the fixing pliers are manually opened and clamped to the pre-fixing hole 22 of the steel plate 2. At this time, the reset spring automatically resets to form a clamp, which can save the manual labor of clamping the fixing pliers to a certain extent.

[0038] In order to reduce the pressure on the patient when the fixing clamp is clamped, the clamping arm 33 at the bottom is provided with a sponge block 37. The sponge block 37 is suitable for being deformed under pressure when fixing the steel plate 2 to buffer part of the pressure and relieve the patient's pain. At the same time, due to the deformation of the sponge block 37, there is better friction between the fixing clamp and the patient's bones or corresponding skin tissues to prevent them from moving.

[0039] Embodiment 2:

[0040] Compared with Example 1, this embodiment has an installation groove 8 in the fixing portion 3, and multiple sliders 7 are slidably arranged in the installation groove 8. Multiple positioning portions are respectively installed on the multiple sliders 7. The sliders 7 form an interference fit with the installation grooves 8 when installed, so the sliders 7 have a certain resistance when sliding in the installation grooves 8, that is, it is difficult to move in a natural state. However, the sliders 7 can be manually adjusted in distance, and correspondingly, the positioning portions installed on the sliders 7 can also be adjusted in distance. Since the steel plate 2 is made according to the specific condition of the damaged bone, the size of the steel plate 2 is often not fixed. Of course, the position of the pre-fixed hole 22 can be set to a uniform specification, so that the corresponding positioning portions on the fixing portion 3 do not need to be adjusted. If a uniform specification is not set, the above-mentioned adjustable setting can well meet the use requirements.

[0041] The above-mentioned pre-fixing hole 22 is generally arranged at a position far away from the locking hole 21, that is, there is a gap between the two. When the fixing part 3 presses the steel plate 2 against the patient's bone, the fixing part 3 does not interfere with the locking hole 21, that is, the fixing part 3 will not hinder the operator from performing other operations.

[0042] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A steel plate fixing assembly, characterized in that: It includes a steel plate and a fixing part, wherein the fixing part is suitable for pressing the steel plate against the patient's bone, and a positioning structure is formed between the fixing part and the steel plate. When the fixing part presses the steel plate, the positioning structure is suitable for keeping the steel plate and the fixing part relatively still.

2. The steel plate fixing assembly according to claim 1, characterized in that: The steel plate includes a plurality of locking holes and a plurality of pre-fixing holes, each of which is provided with a corresponding countersunk hole, the pre-fixing hole is arranged at an end away from the patient's bone fracture, and the fixing portion includes a plurality of protruding positioning portions, and the plurality of positioning portions cooperate and abut with the plurality of pre-fixing holes to form the positioning structure.

3. The steel plate fixing assembly according to claim 2, characterized in that: The positioning portion includes a positioning column and a fitting portion, the positioning column is fitted with the countersunk hole wall at the top of the pre-fixed hole position, and the fitting portion is fitted with the hole wall of the pre-fixed hole position.

4. The steel plate fixing assembly according to claim 3, characterized in that: The positioning part further includes a telescopic column and a spring, the positioning column is connected to the fixing part through the telescopic column, and the spring is arranged between the fixing part and the positioning column.

5. The steel plate fixing assembly according to claim 2, characterized in that: The positioning portion is conical, and when the positioning portion is inserted into the pre-fixing hole, an interference fit is formed, and the positioning portion abuts against the top of the pre-fixing hole.

6. The steel plate fixing assembly according to claim 2, characterized in that: The fixing part is configured as a fixing clamp, which includes a pair of movable rods, a hinged part and a pair of clamping arms, and the clamping arms located at the top are provided with the positioning part.

7. The steel plate fixing assembly according to claim 6, characterized in that: A return spring is arranged between the pair of movable rods, and the return spring makes the pair of clamping arms have a tendency to move closer in a natural state.

8. The steel plate fixing assembly according to claim 6, characterized in that: The clamping arm at the bottom is provided with a sponge block, and the sponge block is suitable for being deformed under pressure when fixing the steel plate.

9. The steel plate fixing assembly according to claim 2, characterized in that: The fixing portion is provided with an installation groove, in which a plurality of sliding blocks are slidably arranged, and the plurality of positioning portions are respectively installed on the plurality of sliding blocks, and the sliding blocks form an interference fit with the installation groove when installed.

10. The steel plate fixing assembly according to claim 2, characterized in that: The pre-fixing hole is far away from the locking hole, and when the fixing part presses the steel plate against the patient's bone, the fixing part does not interfere with the locking hole.

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