Forearm orthopedic traction device

Abstract

The application discloses a forearm orthopedic traction device which comprises a first traction frame, a second traction frame, a third traction frame, a traction screw rod, a screw rod moving wheel disc, a traction belt, a traction belt limiting buckle and a restraint belt. The device is provided with three size selections and left and right arm selections, fully considers the feeling of patients and the convenience of doctor operation, adopts the counter traction in the traction mode, and is suitable for stable traction and reduction of forearm and wrist fractures.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and specifically relates to a forearm orthopedic traction device. Background Technology

[0002] Orthopedic traction devices play a crucial role in clinical treatment as important auxiliary equipment for surgical procedures and postoperative rehabilitation. Depending on the site of application, these devices can be further categorized into cervical traction devices, lumbar traction devices, and wrist traction devices. Among these, wrist traction devices are medical devices specifically designed to immobilize the wrist or forearm, and are widely used in arthroscopic surgery, fracture reduction, and rehabilitation training to effectively distribute stress on the limb.

[0003] However, existing forearm or wrist traction devices still have significant limitations in practical applications. Due to significant individual differences among patients, the angle of the fixation post often needs to be adjusted specifically during use. Traditional traction devices typically require the angle of the fixation post to be pre-set before installation, making it extremely inconvenient to readjust the angle during use. This lack of flexibility not only increases the complexity of operation and reduces ease of use, but also affects patient comfort and the final traction treatment effect to some extent. Summary of the Invention

[0004] To address the aforementioned problems, the present invention aims to provide a forearm orthopedic traction device that is structurally sound, easy to operate, safe and reliable, and capable of providing effective traction.

[0005] To achieve the above objectives, the present invention provides a forearm orthopedic traction device, characterized in that: the forearm orthopedic traction device includes a first traction frame, a second traction frame, a third traction frame, a traction screw, a screw moving wheel, a traction belt, a traction belt limiting buckle, and a restraint belt, wherein the first to third traction frames form a telescopic traction frame; wherein, the first traction frame is an angled plate with a base plate and side plates integrally connected. The base plate is fan-shaped and unfolds with the angle of the side plates. The side plates are perpendicular to the base plate and have an angle for fixing and limiting a certain angle of elbow joint flexion. The base plate has a medial condyle decompression hole in the middle of the humerus, and two support connecting posts at each end, allowing connection to the second traction frame from different directions depending on whether it's the left or right arm. There is an elbow restraint strap limiting hole on each outer side of the base plate, and another elbow restraint strap limiting hole on each upper side of the side plate, corresponding to the base plate, to fix the upper arm and forearm at the elbow, respectively. The second traction frame is a long, plate-like structure, with a width corresponding to the base plate of the first traction frame. One end of the second traction frame has a support connecting hole for connecting to the support connecting posts of the first traction frame base plate, and the other end has six support connecting holes arranged in three rows. Used to connect the third traction frame; the third traction frame is a support with a long base plate and a short upright plate. The connecting end of the base plate has 4 support connecting columns, which can be combined with the 6 support connecting holes of the second traction frame to form three different lengths of forearm orthopedic traction devices. The upright plate is connected to the base plate at a right angle, and the right angle is reinforced with a rounded rib. There is a circular boss at the rear of the upright plate, with a traction screw hole in the center. There is a toothed protrusion below the traction screw hole, so that the traction screw can only make linear movements and cannot make rotational movements in the traction screw hole. The main body of the traction screw is a screw rod, and there is a longitudinal toothed groove on one side of the screw rod, corresponding to the toothed protrusion. One end of the traction screw has an integrated traction hook for connecting the traction belt; the screw moving wheel is a disc-shaped structure with a boss on one side. The shallow hole of the boss corresponds to the circular boss, limiting the coaxiality of the screw moving wheel's rotation. The through hole of the screw moving wheel is a threaded hole, corresponding to the screw; the traction belt is a ring structure, which is changed to an ∞-shaped structure by the traction belt limiting buckle. The size of the two circles can be changed by arbitrarily adjusting the limiting buckle. One end is fitted onto the wrist-hand connection and the traction belt limiting buckle tightens the round opening to prevent slippage. The other end is fitted onto the traction hook. When the traction screw moves backward, it pulls the traction belt to pull the hand and achieve the purpose of forearm traction and fixation.

[0006] The first traction frame is designed to fix the elbow at an obtuse angle, which is intended to keep the arm as far away from the patient's body as possible during continuous traction, making it easier for doctors to perform external or internal fixation operations.

[0007] The first traction frame base plate has a medial condyle decompression hole in the middle, which can prevent pain caused by the medial condyle of the humerus convex contacting the base plate or pressure injury caused by anesthesia.

[0008] The first traction frame base plate has two bracket connecting columns at both ends. The bracket connecting columns on different ends are selected according to the left and right arms to connect with the bracket connecting holes of the second traction frame, so as to achieve the purpose of being universal for both left and right sides.

[0009] There are three options for connecting the second and third traction frames, and three lengths of forearm orthopedic traction devices to suit different patients.

[0010] The third traction frame has a circular boss on its upright plate facing backward, and a toothed protrusion below the central traction screw hole, which matches the longitudinal toothed groove of the traction screw, so that the screw can only move linearly in the traction screw hole and cannot rotate.

[0011] The traction end of the traction screw has an integral traction hook for connecting the traction belt.

[0012] The traction belt has a circular structure. By using a traction belt limiting buckle, the circular structure can be changed to an ∞-shaped structure. The size of the two circles can be changed by arbitrarily adjusting the limiting buckle, which facilitates stable traction and prevents disengagement.

[0013] The main components of the forearm orthopedic traction device are all made of high-molecular plastic materials.

[0014] The traction belt is made of cotton or silk.

[0015] The constraint strap is a self-adhesive or bayonet-type constraint strap.

[0016] The forearm orthopedic traction device provided by this invention has the following beneficial effects: The traction principle and function of this device are equivalent to continuous and stable counter-traction by human force. Effective traction provides favorable conditions for both non-surgical and surgical treatment of fractures and other diseases. This device overcomes the bottlenecks of traditional traction methods in terms of safety, compatibility, and stability. The components are primarily made of medical-grade polymer materials, possessing excellent biocompatibility and mechanical stability. Each product is independently packaged and delivered directly to the clinic; it is disposable after use, eliminating the possibility of cross-infection. Its structure is streamlined yet logically rigorous. Every opening and every detail is not redundant but rather an ultimate refinement of the mechanical transmission path, bearing the heaviest burden with the fewest fulcrums, and is a concrete practice of the "non-invasive intervention" concept. Attached Figure Description

[0017] Figure 1 A three-dimensional view of the assembled structure of the forearm orthopedic traction device provided by the present invention.

[0018] Figure 2 This is a perspective view of the first traction frame structure in this invention.

[0019] Figure 3 This is a perspective view of the second traction frame structure in this invention.

[0020] Figure 4 This is a perspective view of the third traction frame structure in this invention.

[0021] Figure 5 This is a three-dimensional view of the traction screw structure in this invention.

[0022] Figure 6 This is a three-dimensional view of the lead screw moving wheel structure in this invention. Detailed Implementation

[0023] The forearm orthopedic traction device provided by the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 — Figure 6As shown, the forearm orthopedic traction device provided by this invention comprises a first traction frame 1, a second traction frame 2, a third traction frame 3, a traction screw 4, a screw moving wheel 5, a traction belt 6, a traction belt limiting buckle 7, and a restraint belt 8. The first to third traction frames 1, 2, and 3 form a telescopic traction frame. The first traction frame 1 is an angled L-shaped plate with a base plate 1a and a side plate 1b, integrally connected. The base plate 1a is fan-shaped and unfolds with the angle of the side plate 1b. The side plate 1b is perpendicular to the base plate 1a and has an angle used to fix and limit the elbow joint flexion at a certain angle. The base plate 1a has a medial condyle decompression hole 1d in the middle, and two support connecting posts 1c at each end, which can be connected to the second traction frame 2 from different directions depending on whether it is the left or right arm. The outer sides of both sides of the base plate 1a have an elbow restraint strap 8 limiting hole 1e, and the upper sides of both sides of the side plate 1b also have an elbow restraint strap 8 limiting hole 1e corresponding to the base plate, respectively fixing the upper arm and forearm at the elbow. The second traction frame 2 is a long plate-shaped structure, the width of which corresponds to the base plate 1a of the first traction frame 1. One end of the second traction frame 2 has two support connecting holes 2c for connecting to the support connecting posts 1c of the base plate 1a of the first traction frame 1, and the other end has six support connecting holes 2c arranged in three rows for... The third traction frame 3 is connected to the base plate 3a, which is longer than the upright plate 3b. The connecting end of the base plate 3a has four support connecting columns 3c, which can be combined with the six support connecting holes 2c of the second traction frame 2 to form three different lengths of forearm orthopedic traction devices. The upright plate 3b is connected to the base plate 3a at a right angle, and the right angle is reinforced with a rounded rib. The upright plate 3b has a circular boss 3f at the rear, with a traction screw hole 3g in the center. Below the traction screw hole 3g is a toothed protrusion 3h, which makes the traction screw 4 only able to move linearly and not rotate in the traction screw hole 3g. The main body of the traction screw 4 is a screw 4g, and there is a longitudinal toothed groove 4h on one side of the screw, which corresponds to the toothed protrusion 3h. The traction end of the traction screw 4 has an integrated traction hook 4i for connecting the traction belt 6; the screw moving wheel 5 has a disc-shaped structure with a boss 5f on one side. The shallow hole of the boss 5f corresponds to the circular boss 3f, which limits the coaxiality of the rotation of the screw moving wheel 5. The through hole of the screw moving wheel 5 is a threaded hole 5g, which corresponds to the screw 4g; the traction belt 6 has a circular structure. The circular structure is changed to an ∞-shaped structure by the traction belt limiting buckle 7. The size of the two circles can be changed by arbitrarily adjusting the limiting buckle 7. One end is fitted on the wrist and palm joint and the circular opening is tightened by the traction belt limiting buckle 7 to prevent slippage. The other end is fitted on the traction hook 4i. When the traction screw 4 moves backward, it pulls the traction belt 6 to pull the hand to achieve the purpose of forearm traction.

[0025] The first traction frame 1 is designed to fix the elbow at an obtuse angle, which is intended to keep the arm as far away from the patient's body as possible during continuous traction, making it easier for doctors to perform external or internal fixation operations.

[0026] The first traction frame 1 has a medial condyle decompression hole 1d in the middle of the base plate 1a. This hole can prevent pain caused by the medial condyle of the humerus convex contacting the base plate or pressure injury caused by anesthesia.

[0027] The first traction frame 1 has two bracket connecting columns 1c at both ends of the base plate 1a. The bracket connecting columns 1c on different ends of the left and right arms are selected to connect with the bracket connecting holes 2c of the second traction frame 2, so as to achieve the purpose of being universal for both left and right sides.

[0028] There are three options for connecting the second traction frame 2 and the third traction frame 3, and three lengths of forearm orthopedic traction devices to suit different patients.

[0029] The third traction frame 3 has a circular boss 3f on the rearward side of the upright plate 3b, and a toothed protrusion 3h below the central traction screw hole 3g, which matches the longitudinal toothed groove 4h of the traction screw 4 screw 4g, so that the screw 4g can only move linearly in the traction screw hole 3g and cannot rotate.

[0030] The traction end of the traction screw 4 has an integral traction hook 4i for connecting the traction belt 6.

[0031] The method of using the forearm orthopedic traction device provided by this invention is described below: Adjust the size and orientation of the forearm orthopedic traction device according to the patient's physical condition; Place the adjusted forearm orthopedic traction device under the elbow and forearm, place the medial condyle of the humerus in the decompression hole, and use restraint straps to restrain the elbow, upper arm and forearm respectively. Insert one side of the traction belt into the wrist-palm junction, tighten the traction belt limit buckle, and insert the other end of the traction belt into the traction hook of the traction screw. Rotate the lead screw to move the wheel, gradually increasing the traction force to complete the forearm's counter-traction work.

Claims

1. A forearm orthopedic traction device, characterized in that: The forearm orthopedic traction device includes a first traction frame 1, a second traction frame 2, a third traction frame 3, a traction screw 4, a screw moving wheel 5, a traction belt 6, a traction belt limiting buckle 7, and a restraint belt 8. The first to third traction frames 1, 2, and 3 form a telescopic traction frame. The first traction frame 1 is an angled L-shaped plate with a base plate 1a and a side plate 1b, integrally connected. The base plate 1a is fan-shaped and unfolds with the angle of the side plate 1b. The side plate 1b is perpendicular to the base plate 1a and has an angle used to fix and limit a certain angle of elbow joint flexion. The base plate 1a has a medial condyle decompression hole 1d in the middle, and two support connecting posts 1c at each end, which can be connected to the second traction frame 2 from different directions depending on whether it is the left or right arm. The outer sides of both sides of the base plate 1a have an elbow restraint strap 8 limiting hole 1e, and the upper sides of both sides of the side plate 1b also have an elbow restraint strap 8 limiting hole 1e corresponding to the base plate, respectively fixing the upper arm and forearm at the elbow. The second traction frame 2 is a long plate-shaped structure, the width of which corresponds to the base plate 1a of the first traction frame 1. One end of the second traction frame 2 has two support connecting holes 2c for connecting to the support connecting posts 1c of the base plate 1a of the first traction frame 1, and the other end has six support connecting holes 2c arranged in three rows for... The third traction frame 3 is connected to the base plate 3a, which is longer than the upright plate 3b. The connecting end of the base plate 3a has four support connecting columns 3c, which can be combined with the six support connecting holes 2c of the second traction frame 2 to form three different lengths of forearm orthopedic traction devices. The upright plate 3b is connected to the base plate 3a at a right angle, and the right angle is reinforced with a rounded rib. The upright plate 3b has a circular boss 3f at the rear, with a traction screw hole 3g in the center. Below the traction screw hole 3g is a toothed protrusion 3h, which makes the traction screw 4 only able to move linearly and not rotate in the traction screw hole 3g. The main body of the traction screw 4 is a screw 4g, and there is a longitudinal toothed groove 4h on one side of the screw, which corresponds to the toothed protrusion 3h. The traction end of the traction screw 4 has an integrated traction hook 4i for connecting the traction belt 6; the screw moving wheel 5 is a disc-shaped structure with a boss 5f on one side. The shallow hole of the boss 5f corresponds to the circular boss 3f, limiting the coaxiality of the rotation of the screw moving wheel 5. The through hole of the screw moving wheel 5 is a threaded hole 5g, corresponding to the screw 4g; the traction belt 6 is a ring structure. The ring structure is changed to an ∞-shaped structure by the traction belt limiting buckle 7. The size of the two circles can be changed by arbitrarily adjusting the limiting buckle 7. One end is fitted at the wrist-hand connection and the ring opening is tightened by the traction belt limiting buckle 7 to prevent slippage. The other end is fitted on the traction hook 4i. When the traction screw 4 moves backward, it pulls the traction belt 6 to pull the hand and achieve the purpose of forearm traction.

2. The forearm orthopedic traction device according to claim 1, characterized in that: The first traction frame 1 is designed to fix the elbow at an obtuse angle, which is intended to keep the arm as far away from the patient's body as possible during continuous traction, making it easier for doctors to perform external or internal fixation operations.

3. The forearm orthopedic traction device according to claim 1, characterized in that: The first traction frame 1 has a medial condyle decompression hole 1d in the middle of the base plate 1a. This hole can prevent pain caused by the medial condyle of the humerus convex contacting the base plate or pressure injury caused by anesthesia.

4. The forearm orthopedic traction device according to claim 1, characterized in that: The first traction frame 1 has two bracket connecting columns 1c at both ends of the base plate 1a. The bracket connecting columns 1c on different ends of the left and right arms are selected to connect with the bracket connecting holes 2c of the second traction frame 2, so as to achieve the purpose of being universal for both left and right sides.

5. The forearm orthopedic traction device according to claim 1, characterized in that: There are three options for connecting the second traction frame 2 and the third traction frame 3, and three lengths of forearm orthopedic traction devices to suit different patients.

6. The forearm orthopedic traction device according to claim 1, characterized in that: The third traction frame 3 has a circular boss 3f on the rearward side of the upright plate 3b, and a toothed protrusion 3h below the central traction screw hole 3g, which matches the longitudinal toothed groove 4h of the traction screw 4 screw 4g, so that the screw 4g can only move linearly in the traction screw hole 3g and cannot rotate.

7. The forearm orthopedic traction device according to claim 1, characterized in that: The traction end of the traction screw 4 has an integral traction hook 4i for connecting the traction belt 6.

8. The forearm orthopedic traction device according to claim 1, characterized in that: The traction belt 6 has a circular structure. The circular structure is changed to an ∞-shaped structure by the traction belt limit buckle 7. The size of the two circles can be changed by arbitrarily adjusting the limit buckle 7, which facilitates stable traction and prevents disengagement.

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