Tension traction bow for orthopedic surgery

Abstract

The utility model discloses a tension traction bow for orthopedic surgery, which relates to the field of reduction surgical instruments, and comprises a traction bow main body, a traction bow main body and a traction bow main body, the two locking head structures are arranged at one ends of the two hinge arms respectively, limiting bosses are arranged on the locking head structures, limiting grooves are formed in the hinge arms, and the limiting bosses are embedded in the limiting grooves; one end of the locking knob penetrates through the locking head structure and is connected with the hinge arm, when the locking knob rotates anticlockwise, the limiting boss is arranged in the limiting groove in a sliding mode, and when the locking knob rotates clockwise, the locking head structure is fixed to the hinge arm; in the using process of the tension traction bow, the defect that locking of a traditional traction bow can only be completed with the help of a tool can be overcome, 360-degree rotation of the locking head is prevented through limitation of the movement angle of the limiting boss by the limiting groove, and the tension traction bow can further provide tension for the traction needle.

Description

Technical Field

[0001] The utility model belongs to the field of reduction surgical instruments, and more specifically relates to a tension traction bow used for orthopedic surgery. Background Art

[0002] Many orthopedic reduction surgeries require a traction bow. The bow is locked onto a traction needle and connected to a traction device for traction. Tightening the traction bow typically requires the use of tools like a wrench or socket, making the operation cumbersome. Currently, the locking head of a traction bow rotates 360°, which can easily lead to misjudgment and reverse locking. Furthermore, current traction bows cannot provide tension to the traction needle, making it prone to bending the needle during traction. Utility Model Content

[0003] The purpose of the utility model is to address the deficiencies in the existing technology and provide a tension traction bow for orthopedic surgery. During use, the tension traction bow can solve the disadvantage that traditional traction bows must be locked with the help of tools. The limiting groove limits the movement angle of the limiting boss to prevent the locking head structure from rotating 360°, and the tension traction bow can also provide tension to the traction needle.

[0004] In order to achieve the above-mentioned object, the utility model provides a tension traction bow for orthopedic surgery, comprising:

[0005] a traction bow body comprising two articulated arms;

[0006] Two locking head structures are respectively provided at one end of the two hinged arms, the locking head structures are provided with a limiting boss, the hinged arms are provided with a limiting groove, and the limiting boss is embedded in the limiting groove;

[0007] A locking knob, one end of which passes through the locking head structure and is connected to the articulated arm. When the locking knob rotates counterclockwise, the limiting boss slides in the limiting groove. When the locking knob rotates clockwise, the locking head structure is fixed to the articulated arm.

[0008] Optionally, the traction bow body includes:

[0009] A main rod, both ends of which are hingedly connected to the other ends of the two hinged arms;

[0010] An adjustment rod is provided between the two articulated arms, wherein both ends of the adjustment rod are connected to the middle portion of the articulated arm on the same side through a connecting rod, and both ends of the connecting rod are hingedly connected;

[0011] The tension knob is connected to the middle portion of the adjustment rod through a screw rod, the screw rod passes through the middle portion of the main rod, and the screw rod is threadedly connected to the main rod.

[0012] Optionally, the hand-held portion of the tension knob is plum blossom-shaped.

[0013] Optionally, the locking head structure includes an upper locking head and a lower locking head, a communicating hole is correspondingly provided between the upper locking head and the lower locking head, and the locking knob passes through the communicating hole.

[0014] Optionally, the upper locking head and the lower locking head are respectively provided with clamping grooves. When the upper locking head and the lower locking head are in contact with each other, the two clamping grooves are connected to form a space for placing a traction needle.

[0015] Optionally, a first serrated surface and a second serrated surface are respectively provided on the sides of the upper locking head and the lower locking head that are close to each other, and the inner recesses of the first serrated surface and the second serrated surface serve as the clamping groove.

[0016] Optionally, a positioning hole and a positioning pin are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the positioning hole is plug-fitted with the positioning pin.

[0017] Optionally, the first serrated surface and the positioning hole are respectively provided at two ends of the upper locking head, and the second serrated surface and the positioning pin are respectively provided at two ends of the lower locking head.

[0018] Optionally, the limiting boss is arranged on the lower locking head, the limiting groove is in an arc shape, and the center of the arc is arranged on the axis of the locking knob.

[0019] Optionally, the arc angle of the limiting groove is not greater than 45°.

[0020] The utility model provides a tension traction bow for orthopedic surgery, which has the beneficial effect that the traction bow can prevent the locking head structure from rotating 360 degrees under the cooperation of the limit pin and the limit groove. After locking the traction needle, a certain tension can be applied to the traction needle by turning the tension knob. The operation is simple and convenient, and the traction needle can be prevented from deformation.

[0021] Other features and advantages of the present invention will be described in detail in the subsequent detailed description of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0023] Figure 1The figure shows a structural schematic diagram of a tension traction bow for orthopedic surgery according to an embodiment of the present utility model.

[0024] Figure 2 A schematic diagram of the connection between the locking head structure and the articulated arm according to an embodiment of the present utility model is shown.

[0025] Figure 3 A structural schematic diagram of one end of an articulated arm according to an embodiment of the present utility model is shown.

[0026] Description of reference numerals:

[0027] 1. Tension knob; 2. Articulated arm; 3. Locking knob; 4. Upper locking head; 5. Lower locking head; 6. Limit boss; 7. Limit slot; 8. Main rod; 9. Adjustment rod; 10. Connecting rod; 11. Screw; 12. First serrated surface; 13. Second serrated surface; 14. Positioning pin. DETAILED DESCRIPTION

[0028] The following describes preferred embodiments of the present invention in greater detail. Although preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. Rather, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0029] The utility model provides a tension traction bow for orthopedic surgery, comprising:

[0030] a traction bow body comprising two articulated arms;

[0031] Two locking head structures are respectively arranged at one end of the two hinged arms, a limiting boss is provided on the locking head structure, a limiting groove is provided on the hinged arm, and the limiting boss is embedded in the limiting groove;

[0032] One end of the locking knob passes through the locking head structure and is connected to the articulated arm. When the locking knob rotates counterclockwise, the limiting boss slides in the limiting groove. When the locking knob rotates clockwise, the locking head structure is fixed to the articulated arm.

[0033] Specifically, a locking head structure is provided at one end of each of the two hinged arms in the traction bow, and the end of the traction needle is fixed by the locking head structure. Since a limiting groove and a limiting boss are provided between the locking head structure and the hinged arm, the rotation angle of the locking head structure can be limited, thereby avoiding the locking head structure from rotating 360° without restriction, which may cause the user to misjudge the operation.

[0034] Optionally, the traction bow body comprises:

[0035] A main rod, both ends of which are hingedly connected to the other ends of the two hinged arms;

[0036] An adjusting rod is provided between the two hinged arms, with both ends of the adjusting rod being connected to the middle of the hinged arm on the same side through connecting rods, and both ends of the connecting rods are hingedly connected;

[0037] The tension knob is connected to the middle part of the adjustment rod through a screw rod. The screw rod passes through the middle part of the main rod, and the screw rod is threadedly connected to the main rod.

[0038] Specifically, a plurality of hinged components are provided in the traction bow body, so that the screw rod is threadedly connected with the main rod, and the longer the screw rod enters between the two hinged arms, the greater the distance between the adjustment rod and the main rod, so that the opening angle between the two hinged arms is larger, which can adapt to the respective traction and reset requirements; a tension knob is also provided on the screw rod, and when the traction needle is locked on the locking head structure, the tension knob is rotated clockwise to give the traction needle a certain tension, thereby improving the traction needle's anti-deformation ability and preventing the traction needle from deformation.

[0039] Optionally, the hand-held portion of the tension knob is plum blossom-shaped.

[0040] Specifically, when operating the tension knob, the user can hold the plum blossom-shaped handle to rotate the tension knob, which does not require the use of other tools. The operation is simple and quick, and it is easy to apply tension to the traction needle.

[0041] Optionally, the locking head structure includes an upper locking head and a lower locking head, a communicating hole is correspondingly provided between the upper locking head and the lower locking head, and the locking knob passes through the communicating hole.

[0042] Specifically, the locking head structure is formed by superimposing an upper locking head and a lower locking head. A connecting hole is opened in the middle of the two locking heads. When the locking knob passes through the connecting hole and is screwed to the articulated arm, the locking knob is tightened clockwise. In this way, the upper locking head and the lower locking head can be fixed to each other to ensure the temperature clamping of the traction needle.

[0043] Optionally, the upper locking head and the lower locking head are respectively provided with clamping grooves. When the upper locking head and the lower locking head are fitted together, the two clamping grooves are connected to form a space for placing the traction needle.

[0044] Optionally, a first serrated surface and a second serrated surface are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the inner recesses of the first serrated surface and the second serrated surface are clamping grooves.

[0045] Specifically, clamping grooves are respectively provided on the side where the upper and lower locking heads are close to each other, and the concave part of the serrated surface can be used as the clamping groove. In this way, the communication directions of the clamping grooves formed on the two hinged arms are relatively arranged. After the traction needle is connected to the patient's affected part, the two ends of the traction needle are respectively inserted into the clamping grooves, and then the two serrated surfaces face the traction needle when the locking knob is tightened to clamp and fix it. This structural design is simple, the clamping force is stable, the fixed position of the traction needle is easy to observe, and the operation is easy and simple.

[0046] Optionally, a positioning hole and a positioning pin are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the positioning hole and the positioning pin are plug-fitted.

[0047] Optionally, the first serrated surface and the positioning hole are respectively provided at two ends of the upper locking head, and the second serrated surface and the positioning pin are respectively provided at two ends of the lower locking head.

[0048] Specifically, the serrated surface is set at the end of the articulated arm close to the tension knob, and the positioning hole and the positioning pin are set at the end of the articulated arm away from the tension knob. Through the installation cooperation of the connecting hole and the locking knob, the center positions of the upper and lower locking heads can be aligned. Then, through the plug-in cooperation of the positioning block and the positioning pin, the correct orientation of the upper and lower locking heads can be ensured, so that the clamping grooves of the upper and lower locking heads can be aligned, so that the traction needle can be accurately inserted into the space formed by the clamping groove, ensuring the connection strength of the traction needle, avoiding the traction needle from being subjected to the wrong force direction, causing the traction needle to bend and deform, and affecting its service life.

[0049] Optionally, the limiting boss is provided on the lower locking head, the limiting groove is in an arc shape, and the center of the arc is provided on the axis of the locking knob.

[0050] Optionally, the arc angle of the limiting groove is not greater than 45°.

[0051] Specifically, after the traction needle is locked and fixed in the locking head structure, the opening angle of the articulated arm can be changed through the tension knob. In this way, since the locking knob is in a locked state, the relative positions of the locking head structure and the articulated arm will not change. Only the direction of the clamping groove in the locking head structure is deflected at a certain angle, thereby applying bending stress to the end of the traction needle through the locking head structure, forming a certain tension on the traction needle, improving the deformation resistance of the traction needle, and effectively avoiding traction deformation.

[0052] Example

[0053] like Figures 1 to 3 As shown, the utility model provides a tension traction bow for orthopedic surgery, comprising:

[0054] The traction bow body comprises two articulated arms 2;

[0055] Two locking head structures are respectively provided at one end of the two hinged arms 2. A limiting boss 6 is provided on the locking head structure. A limiting groove 7 is provided on the hinged arm 2. The limiting boss 6 is embedded in the limiting groove 7.

[0056] One end of the locking knob 3 passes through the locking head structure and is connected to the articulated arm 2. When the locking knob 3 rotates counterclockwise, the limiting boss 6 slides in the limiting groove 7. When the locking knob 3 rotates clockwise, the locking head structure is fixed to the articulated arm 2.

[0057] In this embodiment, the traction bow body includes:

[0058] The main rod 8 has two ends hingedly connected to the other ends of the two hinged arms 2;

[0059] An adjusting rod 9 is provided between the two articulated arms 2. Both ends of the adjusting rod 9 are connected to the middle of the articulated arm 2 on the same side through a connecting rod 10. Both ends of the connecting rod 10 are hingedly connected.

[0060] The tension knob 1 is connected to the middle portion of the adjustment rod 9 through a screw rod 11 . The screw rod 11 passes through the middle portion of the main rod 8 , and the screw rod 11 is threadedly connected to the main rod 8 .

[0061] In this embodiment, the grip portion of the tension knob 1 is in the shape of a plum blossom.

[0062] In this embodiment, the locking head structure includes an upper locking head 4 and a lower locking head 5. A communication hole is correspondingly provided between the upper locking head 4 and the lower locking head 5, and the locking knob 3 passes through the communication hole.

[0063] In this embodiment, the upper locking head 4 and the lower locking head 5 are respectively provided with clamping grooves. When the upper locking head 4 and the lower locking head 5 are fitted together, the two clamping grooves are connected to form a space for placing the traction needle.

[0064] In this embodiment, a first serrated surface 12 and a second serrated surface 13 are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the inner recesses of the first serrated surface 12 and the second serrated surface 13 are clamping grooves.

[0065] In this embodiment, a positioning hole and a positioning pin 14 are respectively provided on one side of the upper locking head 4 and the lower locking head 5 close to each other, and the positioning hole and the positioning pin 14 are plug-fitted.

[0066] In this embodiment, the first serrated surface 12 and the positioning hole are respectively provided at both ends of the upper locking head 4 , and the second serrated surface 13 and the positioning pin 14 are respectively provided at both ends of the lower locking head 5 .

[0067] In this embodiment, the limiting boss 6 is provided on the lower locking head 5 , and the limiting groove 7 is in an arc shape, with the center of the arc being provided on the axis of the locking knob 3 .

[0068] In this embodiment, the arc angle of the limiting groove 7 is no greater than 45°.

[0069] In summary, during pelvic reduction surgery, when the traction needle is connected to the patient's femur, the opening angle of the two articulated arms 2 is adjusted, and then the locking knob 3 is rotated counterclockwise to allow the locking head structure to rotate to a certain angle. Due to the provision of the limiting boss 6 and the limiting groove 7, the locking head structure is prevented from rotating without restriction, which may cause the doctor's misjudgment operation. The orientation of the locking head structure is determined according to the direction of the clamping groove, and the locking knob 7 is rotated clockwise. In the process of locking the locking head structure, the end of the traction needle is inserted between the inner recesses of the first serrated surface 12 and the second serrated surface 13 to achieve locking and fixation of the traction needle. Finally, the tension knob 1 is rotated clockwise to apply a certain tension to the traction needle to improve the traction needle's anti-deformation ability.

[0070] While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A tension traction bow for orthopedic surgery, characterized in that: include: a traction bow body comprising two articulated arms; Two locking head structures are respectively provided at one end of the two hinged arms, the locking head structures are provided with a limiting boss, the hinged arms are provided with a limiting groove, and the limiting boss is embedded in the limiting groove; A locking knob, one end of which passes through the locking head structure and is connected to the articulated arm. When the locking knob rotates counterclockwise, the limiting boss slides in the limiting groove. When the locking knob rotates clockwise, the locking head structure is fixed to the articulated arm.

2. The tension traction bow for orthopedic surgery according to claim 1, characterized in that: The traction bow body comprises: A main rod, both ends of which are hingedly connected to the other ends of the two hinged arms; An adjustment rod is provided between the two articulated arms, wherein both ends of the adjustment rod are connected to the middle portion of the articulated arm on the same side through a connecting rod, and both ends of the connecting rod are hingedly connected; The tension knob is connected to the middle portion of the adjustment rod through a screw rod, the screw rod passes through the middle portion of the main rod, and the screw rod is threadedly connected to the main rod.

3. The tension traction bow for orthopedic surgery according to claim 2, characterized in that: The hand-held portion of the tension knob is in a plum blossom shape.

4. The tension traction bow for orthopedic surgery according to claim 1, characterized in that: The locking head structure includes an upper locking head and a lower locking head. A communicating hole is correspondingly provided between the upper locking head and the lower locking head, and the locking knob passes through the communicating hole.

5. The tension traction bow for orthopedic surgery according to claim 4, characterized in that: The upper locking head and the lower locking head are respectively provided with clamping grooves. When the upper locking head and the lower locking head are fitted together, the two clamping grooves are connected to form a space for placing a traction needle.

6. The tension traction bow for orthopedic surgery according to claim 5, characterized in that: A first serrated surface and a second serrated surface are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the inner recesses of the first serrated surface and the second serrated surface serve as the clamping groove.

7. The tension traction bow for orthopedic surgery according to claim 6, characterized in that: A positioning hole and a positioning pin are respectively provided on one side of the upper locking head and the lower locking head close to each other, and the positioning hole is plug-fitted with the positioning pin.

8. The tension traction bow for orthopedic surgery according to claim 7, characterized in that: The first serrated surface and the positioning hole are respectively arranged at two ends of the upper locking head, and the second serrated surface and the positioning pin are respectively arranged at two ends of the lower locking head.

9. The tension traction bow for orthopedic surgery according to claim 4, characterized in that: The limiting boss is arranged on the lower locking head, the limiting groove is in an arc shape, and the center of the arc is arranged on the axis of the locking knob.

10. The tension traction bow for orthopedic surgery according to claim 9, characterized in that: The arc angle of the limiting groove is not greater than 45°.

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