Traction fixing device for tibiofibula fracture
By designing a tibia fracture traction fixture device including a traction display part, an adjustment part, a K-S- pin fixing block and a support assembly, the inaccurate traction adjustment, difficulty in ensuring the parallelism of the traction needle and lack of lateral support in the prior art is solved. The problem of this is to achieve precise adjustment of traction force, multi-angle adaptation of traction needles and effective reduction of severe fractures.
Patent Information
- Application Number
- CN202420864566.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-24
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-04-24
AI Technical Summary
Existing tibial and fibula fracture traction fixtures cannot accurately adjust the traction force, and it is difficult to ensure the parallelism of the traction needle, resulting in unsatisfactory traction effect or the risk of secondary damage, and lack of lateral and frontal support, so it is impossible to effectively reduce the cause of severe fractures. Angle shift.
A tibial fibula fracture traction fixture device including a traction assembly, a clamp assembly and a support assembly is designed, and the traction adjustment is achieved through the traction display part and the traction adjustment part. The K-S- pin fixing block and fixing clip provide multi-angle needle adaptation. , combined with support cushion and jack structure to provide longitudinal and lateral support.
Accurate adjustment of the traction force magnitude is achieved, avoiding the risk of too small or too large traction force, ensuring parallelism and multi-angle adaptation of the traction needle, and providing effective reduction and maintenance for severe fractures.
Smart Images
Figure CN222487562U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field related to medical devices, in particular to a traction and fixation device for tibia and fibula fractures. Background Art
[0002] After a patient has a tibia and fibula fracture, calcaneal traction is usually required before surgery or conservative treatment to perform bone traction, braking and reduction of the fracture site. The calcaneal traction commonly used in clinical practice requires a certain weight to be hoisted on a traction bed to apply tension to the fracture end. In this way, the traction effect and sustainability are poor, and the patient's lower limbs are uncomfortable to maintain a traction posture for a long time, which is not easy to maintain for a long time.
[0003] According to CN215651460U, a convenient combined bone traction frame is disclosed, which includes two parallel extendable rods 1, the cross section of the extendable rods 1 is circular, and the upper length of the extendable rods 1 is retractable. Two bone traction pins 4 are detachably connected to the two ends of the extendable rods 1, and the bone traction pins 4 are arranged perpendicular to the extendable rods 1. By rotating the adjustable extension knobs 11 on the two extendable rods 1, the extendable rods 1 can be extended or shortened to achieve the purpose of traction and reduction of the fracture site.
[0004] The device has the following problems: 1. Bone traction has requirements on the size of traction force, but the device cannot determine the size of traction force when adjusting the length of the extension rod, and there is a risk that the traction force is too small, resulting in unsatisfactory traction effect, or the traction force is too large, causing secondary injury to the patient; 2. The connection method of the device requires that the two bone traction needles 4 are parallel to each other, and the two extendable rods are also parallel to each other, but it is difficult to ensure that the two bone traction needles 4 are parallel to each other when clinically inserted, and in some parts such as the calcaneus, it is necessary to deliberately insert the needle at a certain angle. If the traction needle cannot be implanted in parallel, it is easy to cause difficulty in resetting the fracture end; 3. The device only has longitudinal traction force, and there is no lateral and anterior and posterior support device. It has no resetting and maintenance effect for the lateral and anterior and posterior angular displacement of some severe fractures. Utility Model Content
[0005] The purpose of the utility model is to provide a traction and fixation device for tibia and fibula fractures to solve the problems raised in the above background technology.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A traction and fixation device for tibia and fibula fractures comprises a traction component and a support component threadedly mounted on the traction component, wherein a clamping component is movably arranged below the support component.
[0008] The traction assembly is installed on the traction needle, a fixing part 1 is threadedly installed at the clamping part above the traction needle, a traction force adjusting part is fixedly installed at one end of the fixing part 1, and the traction rod runs through the fixing part 1 and the traction force adjusting part.
[0009] The traction and fixation device for tibia and fibula fracture as described above: the traction assembly comprises a traction force display part movably mounted on one end of the traction rod, and a second fixing part is threadedly penetrated above the traction force display part.
[0010] The traction fixation device for tibia and fibula fracture as described above: one end of the traction rod has an external thread, and the other end is a smooth rod, the smooth rod has a step, and the step has a hole, which is fixedly connected to the indicator pin of the traction force display part.
[0011] The traction fixation device for tibia and fibula fractures as described above: the hole-axis cooperation between the Kirschner wire fixing block and the fixing clamp on the second fixing part provides three degrees of rotational freedom, which is suitable for a traction needle for multi-angle needle insertion. The traction needle is suitable for multi-angle needle insertion. The hole-axis cooperation between the Kirschner wire fixing block and the fixing clamp on the second fixing part provides three degrees of rotational freedom.
[0012] The traction and fixation device for tibia and fibula fractures as described above: the fixed clamping assembly includes a rod needle clamp movably mounted on the traction rod, a fixing needle is arranged on one side of the rod needle clamp, a splint part is movably mounted on the clamping part of the fixing needle, a quick-release screw is penetrated through one side of the splint part, a connecting rod is threadedly connected to the fixing part below the rod needle clamp, and the rod needle clamp can be optionally provided with a support pad.
[0013] The traction and fixation device for tibia and fibula fractures as described above: the bar-pin clamp is suitable for open fractures, one end of the fixation pin is nailed into the vicinity of the fracture end, and the other end is fixed to the traction rod through the bar-pin clamp.
[0014] The traction and fixation device for tibia and fibula fractures as described above: the support assembly includes a support frame part movably mounted on the traction rod, the support frame on the support frame part is locked with the guide rod, a top block part is movably mounted in the middle of the support frame, the top rod of the top block part is provided with a jack structure, longitudinal holes are provided at both ends to match the gap with the guide rod, and a transverse threaded hole is provided at one end to pass through the longitudinal hole, a cloth support is installed above the top block part, and a support rod passes through the inner hole of the support frame part.
[0015] Compared with the prior art, the beneficial effects of the utility model are: the total traction force is the sum of the force displayed by the two traction force display parts; after the required traction force is reached, the traction force adjustment knob and the traction rod are locked by tightening the set screw on the traction force adjustment part, and the traction force is determined when the device adjusts the length of the extension rod, avoiding the risk of unsatisfactory traction effect due to too small traction force or secondary injury to the patient due to too large traction force.
[0016] The support and support pad on the splint are wrapped around the tibia and fibula fracture. The support pad is made of soft elastic material such as medical gel to avoid secondary clamping and fixation injuries. The two extendable rods are also parallel to each other. When two fixation needles are inserted clinically, ensure that they are parallel to each other. The needles can be inserted into certain parts and bones at a certain angle, and the traction needles can be implanted in parallel to facilitate the reduction of the fracture ends.
[0017] Adjust the Velcro adhesive parts at both ends of the cloth support to support the fracture site with appropriate tension. The traction device can be partially disinfected and used in surgery to provide longitudinal distraction and reduction force for the fracture, avoiding large incisions on the fracture ends that expose reduction and damage local blood supply and soft tissue. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the structure of the traction assembly of the utility model;
[0020] Figure 3 This is a schematic diagram of the structure of the clamping assembly of the utility model;
[0021] Figure 4 This is a schematic diagram of the structure of the support assembly of the utility model.
[0022] In the figure: 1. traction assembly; 11. traction needle; 12. traction rod; 13. fixing part one; 14. traction force adjustment part; 15. traction force display part; 16. fixing part two; 2. clamping assembly; 3. support assembly; 21. rod needle clamp; 22. fixing needle; 23. splint part; 24. support pad; 25. quick-release screw; 26. pressure block; 27. connecting rod; 31. support frame part; 32. support frame; 33. top block part; 34. cloth support; 35. support rod. DETAILED DESCRIPTION
[0023] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.
[0024] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.
[0025] In addition, in order to better illustrate the present application, numerous specific details are provided in the specific embodiments below. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, and elements well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.
[0026] See also Figures 1 to 4 , proposed a traction fixation device for tibia and fibula fractures, see Figures 1 to 4 , a traction and fixation device for tibia and fibula fractures is proposed, comprising a traction component 1, a clamping component 2 and a supporting component 3.
[0027] The traction component 1 and the support component 3 threadedly mounted on the traction component 1, a clamping component 2 is movably arranged below the support component 3, the traction component 1 is mounted on the traction needle 11, a fixing part 13 is threadedly mounted at the clamping part above the traction needle 11, a traction force adjusting part 14 is fixedly mounted at one end of the fixing part 13, and the traction rod 12 runs through the fixing part 13 and the traction force adjusting part 14.
[0028] In this embodiment, the traction needle 11 and the Kirschner wire on the fixing part 13 are fixed and locked; the traction needle 11 and the Kirschner wire fixing part 2 16 are locked by tightening the screw; the Kirschner wire fixing block 2 and the end surface teeth of the fixing part 13 are meshed by rotating the screw of the fixing part 2 16; then the traction force adjustment knob is rotated, because the traction rod 12 is connected to the fixing clamp through the indicating pin, spring sleeve and limit pin of the traction force display part 15, the circumferential rotation is restricted, the traction rod 12 moves longitudinally, and the step on the traction rod 12 applies pressure to the compression spring of the traction force display part 15, and the spring reaction force finally acts on the traction needles 11 at both ends to achieve traction.
[0029] Please refer to Figure 1 and Figure 2 In this embodiment, the traction assembly 1 includes a traction force display portion 15 movably mounted on one end of the traction rod 12 , and a second fixing portion 16 is threadedly penetrated above the traction force display portion 15 .
[0030] The total traction force is the sum of the force displayed on the two traction force display parts 15; after reaching the required traction force, the traction force adjustment knob and the traction rod 12 are locked by tightening the set screw on the traction force adjustment part 14, and the fixing clamp and the traction rod 12 are locked by tightening the Y-shaped screw on the traction force adjustment part 14 to prevent accidental contact and change of the traction force.
[0031] Preferably, one end of the traction rod 12 has an external thread and the other end is a smooth rod. The smooth rod has a step, and the step has a hole, which is fixedly connected to the indicator pin of the traction force display part 15. The traction rod 12 is movably adjusted along the fixing part 13 and the traction force adjusting part 14. Bone traction has requirements on the traction force, and the total traction force is the sum of the forces displayed by the two traction force display parts 15. After the required traction force is reached, the traction force adjustment knob and the traction rod 12 are locked by tightening the set screw on the traction force adjusting part 14. The radial opening can be increased, and a rod-shaped wrench can be inserted to facilitate the rotation of the traction force 12 adjustment knob. The traction force can be determined when the device adjusts the length of the extension rod, avoiding the risk of unsatisfactory traction effect caused by too small traction force or secondary injury to the patient caused by too large traction force.
[0032] Preferably, the hole-axis fit between the Kirschner wire fixing block and the fixing clamp on the second fixing part 16 provides three degrees of rotational freedom, which is suitable for the traction needle 11 for multi-angle needle insertion. The traction needle 11 is suitable for multi-angle needle insertion as the hole-axis fit between the Kirschner wire fixing block and the fixing clamp on the second fixing part 16 provides three degrees of rotational freedom.
[0033] Please refer to Figure 1 and Figure 3 In this embodiment, the fixed clamping assembly 2 includes a rod needle clamp 21 movably mounted on the traction rod 12, a fixing needle 22 is arranged on one side of the rod needle clamp 21, a clamping plate 23 is movably mounted on the clamping position of the fixing needle 22, a quick-release screw 25 is penetrated on one side of the clamping plate 23, a connecting rod 27 is threadedly connected to the fixing position below the rod needle clamp 21, and a support pad 24 is optionally provided on the rod needle clamp 21.
[0034] The two traction rods 12 are movably installed in the rod needle clamp 21. By tightening the quick-release screw 25, the long slot opening side of the rod needle clamp 21 is deformed to clamp the fixing needle 22 or the connecting rod 27. The fixing needle 3 and the splint part 23 can be optionally installed for clamping. The support and support pad 24 on the splint part 23 are wrapped around the tibia and fibula fracture. The support pad 24 is made of soft elastic material such as medical gel to avoid secondary clamping and fixation damage.
[0035] Preferably, the rod-needle clamp 21 is suitable for open fractures, one end of the fixing needle 22 is nailed into the vicinity of the fracture end, and the other end is fixed to the traction rod 12 through the rod-needle clamp 21, and the two extendable rods are also parallel to each other. In clinical practice, it is difficult to ensure that the two fixing needles 22 are parallel to each other, and in some parts such as the calcaneus, the needles are nailed in at a certain angle, and the traction needles are implanted in parallel to facilitate the reduction of the fracture ends.
[0036] Please refer to Figure 1 and Figure 4In this embodiment, the support assembly 3 includes a support frame portion 31 movably mounted on the traction rod 12, a support frame 32 on the support frame portion 31 is locked with the guide rod, a top block portion 33 is movably mounted in the middle of the support frame 32, a top rod of the top block portion 33 is provided with a jack structure, both ends of which have longitudinal holes that are clearance-matched with the guide rod, and one end of which has a transverse threaded hole that passes through the longitudinal hole, a cloth support 34 is installed above the top block portion 33, and a support rod 35 passes through the inner hole of the support frame portion 31.
[0037] The slider is fixed at a suitable position on the guide rod by tightening the screws on the support frame 32, the top of the top block 33 is rotated to a suitable height, the support pad is adjusted to a suitable angle and then the screws on the support frame 32 are tightened to support and fix the fracture site. In some cases, a cloth support 34 can be used instead, and the Velcro adhesive parts at both ends of the cloth support 34 are adjusted to support the fracture site with suitable tension.
[0038] As can be seen from the above, the traction rod 12 is movably adjusted along the fixing portion 13 and the traction force adjusting portion 14. Bone traction has requirements on the traction force. The total traction force is the sum of the forces displayed by the two traction force display portions 15. After the required traction force is reached, the traction force adjusting knob and the traction rod 12 are locked by tightening the set screw on the traction force adjusting portion 14.
[0039] One end of the traction rod 12 has an external thread, and the other end is a smooth rod. There is a step on the smooth rod, and a hole is opened on the step, which is fixedly connected to the indicator pin of the traction force display part 15. The traction rod 12 is movable and adjusted along the fixed part 13 and the traction force adjustment part 14. Bone traction has requirements on the traction force. The total traction force is the sum of the force displayed by the two traction force display parts 15. After the required traction force is reached, the traction force adjustment knob and the traction rod 12 are locked by tightening the set screw on the traction force adjustment part 14.
[0040] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
[0041] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A traction fixation device for tibia and fibula fractures, comprising a traction assembly (1), a clamping assembly (2), a traction pin (11), a traction rod (12), and a support assembly (3) threadedly mounted on the traction assembly (1), a clamping assembly (2) movably disposed below the support assembly (3), characterized in that: The traction assembly (1) is mounted on the traction needle (11); a fixing portion (13) is threadedly mounted at a clamping portion above the traction needle (11); a traction force adjustment portion (14) is fixedly mounted at one end of the fixing portion (13); and the traction rod (12) passes through the fixing portion (13) and the traction force adjustment portion (14).
2. The traction and fixation device for tibia and fibula fractures according to claim 1, characterized in that: The traction assembly (1) comprises a traction force display portion (15) movably mounted on one end of a traction rod (12), and a second fixing portion (16) is threadedly penetrated above the traction force display portion (15).
3. The traction and fixation device for tibia and fibula fractures according to claim 1, characterized in that: The traction rod (12) has an external thread at one end and a smooth rod at the other end. The smooth rod has a step, and a hole is opened on the step, which is fixedly connected to the indicating pin of the traction force display part (15).
4. The traction and fixation device for tibia and fibula fractures according to claim 2, characterized in that: The hole-axis cooperation between the Kirschner wire fixing block and the fixing clamp on the second fixing part (16) provides three degrees of rotational freedom, which is suitable for the traction needle (11) for multi-angle needle insertion.
5. The traction and fixation device for tibia and fibula fractures according to claim 1, characterized in that: The fixed clamping assembly (2) comprises a rod needle clamp (21) movably mounted on the traction rod (12), a fixing needle (22) being arranged on one side of the rod needle clamp (21), a clamping plate portion (23) being movably mounted on the clamping portion of the fixing needle (22), a quick-release screw (25) being penetrated through one side of the clamping plate portion (23), a connecting rod (27) being threadedly connected to a fixing portion below the rod needle clamp (21), and the rod needle clamp (21) may be optionally provided with a support pad (24).
6. The traction and fixation device for tibia and fibula fractures according to claim 5, characterized in that: The bar-needle clamp (21) is suitable for open fractures; one end of the fixing needle (22) is nailed into the vicinity of the fracture end, and the other end is fixed to the traction rod (12) via the bar-needle clamp (21).
7. The traction and fixation device for tibia and fibula fractures according to claim 1, characterized in that: The support assembly (3) comprises a support frame portion (31) movably mounted on the traction rod (12); a support frame (32) on the support frame portion (31) is locked with a guide rod; a top block portion (33) is movably mounted in the middle of the support frame (32); a top block portion (33) is movably mounted in the middle of the support frame (32); a jack structure is arranged on the top block portion (33); the jack structure is matched with the gap of the guide rod through a longitudinal hole; one end of the jack structure has a transverse threaded hole that penetrates the longitudinal hole; a cloth support (34) is mounted above the top block portion (33); and a support rod (35) penetrates the inner hole of the support frame portion (31).