Nail supporting device for orthopedics department

Abstract

The utility model relates to the field of medical instruments, in particular to an orthopedic nail supporting device which comprises two fixed sleeve connectors capable of being fixedly connected to bone nails in a sleeved mode and a distraction clamp controlling the distraction state of the two fixed sleeve connectors. The distraction clamp comprises two arm rods hinged in a clamp shape, one end, away from the hinged end, of each arm rod is provided with a fixing sleeve connector, an arc-shaped plate is fixed to one arm rod, an arc-shaped hole is formed in the arc-shaped plate, the circle center of the arc-shaped hole coincides with the hinged center of the two arm rods, a nut is arranged on the other arm rod, and the nut is connected with the arc-shaped hole. A locking bolt penetrating through the arc hole is screwed on the nut; the fixed sleeve connector comprises a sleeve connected to the arm rod, and a locking bolt is connected to the sleeve in a threaded mode. The joint fusion retractor is reasonable in structure and convenient to operate, solves the problems of unstable operation field, operation fatigue, limited adjustment and other pain points existing in traditional bare-handed retraction, and facilitates standardized and mechanized promotion of joint fusion.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to an orthopedic nail spreader. Background Art

[0002] The foot bones are relatively complex in composition and have numerous joints. In terms of treatment, arthrodesis is currently recognized as the gold standard in the industry. Common arthrodesis methods include ankle arthrodesis, triple arthrodesis, intertarsal joint arthrodesis, metatarsophalangeal joint arthrodesis, etc. The key to arthrodesis lies in removing the degenerated cartilage on the opposite edges of the joint, exposing the subchondral bone, and drilling holes to increase the contact area and promote the fusion probability. How to complete this step quickly and perfectly depends on how to completely expose the joint. The more thoroughly the joint is exposed, the shorter the surgical operation time, which is beneficial to both patients and medical staff.

[0003] Currently, most hospitals use Kirschner wires for assistants to manually spread the joint. Due to the obstruction of the assistant's position, the surgeon cannot give full play, which is time-consuming and laborious. Therefore, it is very necessary to study an automatic spreader. Content of the Utility Model

[0004] The utility model aims to solve the technical problems existing in the prior art, and provides an orthopedic nail spreader.

[0005] An orthopedic nail spreader includes two fixing sockets that can be fixedly sleeved on bone nails and a spreading clip for controlling the spreading state of the two fixing sockets;

[0006] The spreading clip includes two arm rods hinged in a clip shape. One fixing socket is arranged at one end of each arm rod away from the hinged end. An arc-shaped plate is fixed on one of the arm rods. An arc hole is provided on the arc-shaped plate, and the center of the arc hole coincides with the hinged center of the two arm rods. A nut is arranged on the other arm rod, and a locking bolt passing through the arc hole is screwed on the nut;

[0007] The fixing socket includes a sleeve connected to the arm rod, and a locking bolt is screwed on the sleeve.

[0008] Furthermore, a spring support plate is arranged between the two arm rods, and the spring support plate has a tendency to cause the two arm rods to open.

[0009] Furthermore, the spring support plate is a spring piece, bent in a V shape, with the bent end facing the hinged point of the two arm rods, and the end of the spring piece is fixed on the corresponding arm rod by a screw.

[0010] Furthermore, the arm rod includes a first unit arm, a second unit arm, and a third unit arm. The two first unit arms are hinged, and the third unit arm is cylindrical and fixedly connected to the sleeve;

[0011] The proximal ends of the first unit arm and the second unit arm close to each other are both provided with ear plates. A through hole is provided on the ear plate of the first unit arm, and a threaded hole is provided on the ear plate of the second unit arm. A locking bolt is provided between the two ear plates, and the locking bolt passes through the through hole and is screwed into the threaded hole.

[0012] A stud is provided at one end of the second unit arm away from the first unit arm. A circular plate is provided on the third unit arm close to the second unit arm. A threaded barrel sleeving the third unit arm is screwed on the stud. The circular plate is arranged inside the threaded barrel, and a blocking portion is provided between the threaded barrel and the circular plate.

[0013] Furthermore, a hinge sleeve is provided at the hinge position of the two arm rods. Each end of the arm rod is rotatably sleeved on the hinge sleeve. A plurality of elastic plates are provided at both ends of the hinge sleeve, and the plurality of elastic plates are arranged in a conical shape. A locking nut is provided on the outer side of the hinge sleeve close to the elastic plate end. An extrusion ring is provided between the locking nut and the elastic plate. A round rod is provided inside the hinge sleeve. The round rod is arranged inside the hinge sleeve. The locking nut is screwed on the hinge sleeve, and the extrusion ring squeezes the elastic plate to form a locking effect on the round rod.

[0014] Furthermore, the locking bolts all adopt five-star bolts which are convenient for operation.

[0015] Furthermore, the number of the locking bolts on the sleeve is two.

[0016] The beneficial effects of the present utility model compared with the prior art: The structure of the present utility model is reasonable and the operation is convenient. It solves the pain points such as unstable surgical field, operation fatigue, and limited adjustment existing in traditional manual retraction, and is beneficial to the promotion of standardization and mechanization of arthrodesis;

[0017] Adopting an adjustable locking retractor clip structure, cooperating with the automatic opening assistance of the spring support plate, realizes the maintenance of a stable retracting force during the operation, avoids the fatigue loosening caused by traditional manual retraction, and ensures the full exposure of the surgical field;

[0018] The three-stage arm rod design realizes the multi-angle adjustment of the sleeve by combining the angle adjustment between the two first unit arms, the angle adjustment between the second unit arm and the first unit arm, and the axis angle adjustment of the third unit arm, which is convenient for docking according to the position and angle of the bone nail;

[0019] All the locking components adopt the five-star bolt design, which is convenient for the operator to quickly operate with one hand;

[0020] The pre-tension design of the spring support plate reduces the manual retracting force, reduces the labor intensity of medical staff, and shortens the operation time;

[0021] The structural design of the hinge part of the two arm rods is beneficial to the combined use of multiple retractor clips with fixed sockets. Description of the Drawings

[0022] Figure 1 is a schematic diagram of an orthopedic nail spreader of the present utility model;

[0023] Figure 2 is a schematic diagram of the structure of the first unit arm and the second unit arm of an orthopedic nail spreader of the present utility model;

[0024] Figure 3 is a schematic diagram of the structure of the second unit arm and the third unit arm of an orthopedic nail spreader of the present utility model;

[0025] Figure 4 is a schematic diagram of the docking structure of the hinge sleeve and the round rod of the present utility model;

[0026] Figure 5 is a combined schematic diagram of two sets of spreading clamps with fixed socket devices of the present utility model;

[0027] Figure 6 is an application schematic diagram of the present utility model;

[0028] Figure 7 is another application schematic diagram of the present utility model.

[0029] As shown in the figure: 1. Arm rod; 2. Arc plate; 3. Arc hole; 4. Nut; 5. Locking bolt; 6. Sleeve; 7. Spring support plate; 8. Hinge sleeve; 9. Elastic plate; 10. Locking nut; 11. Extrusion ring; 12. Round rod; 101. First unit arm; 102. Second unit arm; 103. Third unit arm; 104. Ear plate; 105. Threaded hole; 106. Through hole; 107. Stud; 108. Round plate; 109. Threaded cylinder; 110. Blocking part. Specific embodiments

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0031] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0032] In the description of the embodiments of the present utility model, if a feature is described as "arranged", "fixed", "connected", or "installed" on another feature, it can be directly arranged, fixed, connected, or installed on the other feature, or indirectly arranged, fixed, connected, or installed on the other feature.

[0033] In the description of the embodiments of the present utility model, if "several" is involved, it means more than one; if "a plurality" is involved, it means more than two; if "greater than", "less than", or "exceeding" is involved, it should be understood as not including the number itself; if "above", "below", or "within" is involved, it should be understood as including the number itself. If "first" and "second" are involved, it should be understood as being used to distinguish technical features and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0034] The embodiments of the present utility model will be described below with reference to the accompanying drawings.

[0035] As Figure 1 shown, an orthopedic nail spreader includes two fixed socket connectors that can be fixedly sleeved on bone nails and a spreader clip for controlling the spread state of the two fixed socket connectors;

[0036] The spreader clip includes two arm rods 1 hinged in a clip shape. At one end of each arm rod 1 away from the hinged end, a fixed socket connector is provided. An arc plate 2 is fixed on one of the arm rods 1. An arc hole 3 is provided on the arc plate 2. The center of the arc hole 3 coincides with the hinged center of the two arm rods 1. A nut 4 is provided on the other arm rod 1, and a locking bolt 5 passing through the arc hole 3 is screwed on the nut 4;

[0037] The fixed socket connector includes a sleeve 6 connected to the arm rod 1, and a locking bolt 5 is screwed on the sleeve 6.

[0038] As Figure 1As shown, a spring support plate 7 is provided between two arm rods 1. The spring support plate 7 has a tendency to urge the two arm rods 1 to open. The spring support plate 7 is made of a spring piece, which is bent in a V shape, and the bent end faces the hinge point of the two arm rods 1. The end of the spring piece is fixed to the corresponding arm rod 1 by screws. The pre-tension design of the spring support plate 7 reduces the manual opening force, reduces the labor intensity of medical staff, and shortens the operation time.

[0039] As Figure 1 、 2 shown in FIGS. 2 and 3, the arm rod 1 includes a first unit arm 101, a second unit arm 102 and a third unit arm 103. The two first unit arms 101 are hinged to each other, and the third unit arm 103 is cylindrical and fixedly connected to the sleeve 6;

[0040] Both the proximal ends of the first unit arm 101 and the second unit arm 102 are provided with ear plates 104. A through hole 106 is provided on the ear plate 104 of the first unit arm 101, and a threaded hole 105 is provided on the ear plate 104 of the second unit arm 102. A locking bolt 5 is provided between the two ear plates 104. The locking bolt 5 passes through the through hole 106 and is screwed into the threaded hole 105. When the locking bolt 5 at this position is loosened, the angle between the first unit arm 101 and the second unit arm 102 can be adjusted. After adjustment, the locking bolt 5 is tightened, and the angle between the first unit arm 101 and the second unit arm 102 is fixed;

[0041] A stud 107 is provided at one end of the second unit arm 102 away from the first unit arm 101. A circular plate 108 is provided on the third unit arm 103 close to the second unit arm 102. A threaded cylinder 109 sleeved on the third unit arm 103 is screwed on the stud 107. The circular plate 108 is arranged inside the threaded cylinder 109. A blocking portion 110 is provided on the threaded cylinder 109 between the sleeve 6 and the circular plate 108. By loosening the threaded cylinder 109, the axial angle of the third unit arm 103 can be adjusted. After adjustment, the threaded cylinder 109 is locked, and the blocking portion 110 of the threaded cylinder 109 and the stud 107 fasten the circular plate 108 to maintain the axial angle of the third unit arm 103, that is, the angle of the sleeve 6.

[0042] As Figure 4 shown in and Figure 5As shown in the figure, there is a hinge sleeve 8 at the hinge position of the two arm rods 1. The end of each arm rod 1 is rotatably sleeved on the hinge sleeve 8. A number of elastic plates 9 are provided at both ends of the hinge sleeve 8. The number of elastic plates 9 is arranged in a conical shape. A locking nut 10 is provided on the outer side of the hinge sleeve 8 near the elastic plate 9 end. An extrusion ring 11 is provided between the locking nut 10 and the elastic plate 9. A round rod 12 is provided inside the hinge sleeve 8. The round rod 12 is arranged inside the hinge sleeve 8. The locking nut 10 is screwed on the hinge sleeve 8. The extrusion ring 11 extrudes the elastic plate 9 to form a locking effect on the round rod 12. Through the locking structure design of the hinge sleeve 8 and the round rod 12, multiple sets of spreading clamps with fixed sockets can be arranged on one round rod 12. The locking bolts 5 are all five-star bolts that are convenient to operate, which is convenient for operation.

[0043] The number of the locking bolts 5 on the sleeve 6 is two, which are respectively arranged at the upper and lower positions of the arm rod 1, which is beneficial to improving the fixation of the bone nail.

[0044] When the utility model is docked with the bone nail, loosen the locking bolt 5 between the arc-shaped plate 2 and the arm rod 1, loosen the locking bolt 5 between the first unit arm 101 and the second unit arm 102, loosen the threaded cylinder 109 between the third unit arm 103 and the second unit arm 102, loosen the locking bolt 5 on the sleeve 6, hold the spreading clamp by hand, control the included angle of the two arm rods 1, so that the two sleeves 6 can be sleeved on the corresponding bone nails. Then lock the locking bolt 5 between the arc-shaped plate 2 and the arm rod 1, lock the locking bolt 5 between the first unit arm 101 and the second unit arm 102, lock the threaded cylinder 109 between the third unit arm 103 and the second unit arm 102, and lock the locking bolt 5 on the sleeve 6. Then, according to the set spreading angle, loosen the locking bolt 5 between the arc-shaped plate 2 and the arm rod 1, adjust the included angle between the two arm rods 1, and lock the locking bolt 5 between the arc-shaped plate 2 and the arm rod 1 again after adjustment.

[0045] Application case 1 of the utility model

[0046] As Figure 6 shown, it shows the use mode of V-shaped spreading at the docking position of two bone bodies, that is, at the joint position. In this way, the bone nail does not need to penetrate the bone body and the skin and flesh, reducing damage. As long as the part that needs surgical operation is exposed, this way is applicable to the surgical operation at the partially exposed position of the joint.

[0047] Application case 2 of the utility model

[0048] As Figure 7As shown, it demonstrates the usage mode of parallel expansion at the docking position of two bone bodies, that is, the joint position. In this mode, bone nails need to penetrate the bone bodies and the skin and flesh. A set of expansion clamps with fixed sockets are respectively arranged at the upper and lower positions of the joint. The two groups are connected by a round rod and relatively fixed. This mode is applicable to the surgical operation where the joint docking position is fully exposed.

[0049] The above has described the present utility model and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present utility model, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the creative purpose of the present utility model, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present utility model.

Claims

1. An orthopedic nail spreader, characterized in that: It includes two fixing sleeves that can be fixedly sleeved on bone nails and a spreading clip for controlling the spreading state of the two fixing sleeves; The spreading clip includes two arm rods hinged in a clip shape. A fixing sleeve is provided at one end of each arm rod away from the hinged end. An arc plate is fixed on one of the arm rods, and an arc hole is provided on the arc plate. The center of the arc hole coincides with the hinged center of the two arm rods. A nut is provided on the other arm rod, and a locking bolt passing through the arc hole is screwed on the nut; The fixing sleeve includes a sleeve connected to the arm rod, and a locking bolt is screwed on the sleeve; 2. The orthopedic nail spreader according to claim 1, wherein: A spring support plate is provided between the two arm rods, and the spring support plate has a tendency to cause the two arm rods to open; 3. The orthopedic nail spreader according to claim 2, characterized in that: The spring support plate is made of a spring piece, bent in a V shape, and the bent end faces the hinged point of the two arm rods. The end of the spring piece is fixed to the corresponding arm rod by a screw; 4. An orthopedic nail driver according to claim 1, characterized in that: The arm rod includes a first unit arm, a second unit arm, and a third unit arm. The two first unit arms are hinged, and the third unit arm is cylindrical and fixedly connected to the sleeve; Ear plates are provided at the adjacent ends of the first unit arm and the second unit arm. A through hole is provided on the ear plate of the first unit arm, and a threaded hole is provided on the ear plate of the second unit arm. A locking bolt is provided between the two ear plates, and the locking bolt passes through the through hole and is screwed into the threaded hole; A stud is provided at one end of the second unit arm away from the first unit arm. A circular plate is provided on the third unit arm close to the second unit arm. A threaded cylinder sleeving the third unit arm is screwed on the stud. The circular plate is arranged in the threaded cylinder, and a blocking portion is provided between the sleeve and the circular plate of the threaded cylinder; 5. An orthopedic nail spreader according to any one of claims 1-4, characterized in that: A hinge sleeve is provided at the hinged position of the two arm rods. The end of each arm rod is rotatably sleeved on the hinge sleeve. A plurality of elastic plates are provided at both ends of the hinge sleeve, and the plurality of elastic plates are arranged in a conical shape. A locking nut is provided on the outer side of the hinge sleeve close to the elastic plate end. An extrusion ring is provided between the locking nut and the elastic plate. A round rod is provided in the hinge sleeve. The round rod is arranged in the hinge sleeve, and the locking nut is screwed on the hinge sleeve. The extrusion ring extrudes the elastic plate to form a locking effect on the round rod; 6. The orthopedic nail spreader according to claim 1 or 4, characterized in that: The locking bolts all adopt five-star bolts that are convenient to operate; 7. The orthopedic nail spreader according to claim 1, characterized in that: The number of locking bolts on the sleeve is two.

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