Convenient traction frame for orthopedics department

Abstract

The utility model discloses a convenient traction frame for the orthopedics department, and belongs to the technical field of medical instruments, the convenient traction frame for the orthopedics department comprises an upper positioning frame, a lower positioning frame and an extension assembly connecting the upper positioning frame and the lower positioning frame, the upper positioning frame is used for being connected and fixed to a first kirschner wire at one end of a skeleton to be dragged, and the lower positioning frame is used for being connected and fixed to a second kirschner wire. The lower positioning frame is used for being connected and fixed to a second kirschner wire at the other end of the to-be-dragged skeleton; the extension assembly comprises an extension sleeve, an extension rod and a driving part used for driving the extension rod and the extension sleeve to move relatively, the upper end of the extension rod is connected with the upper positioning frame through a first fixing part, and the lower end of the extension sleeve is connected with the lower positioning frame through a second fixing part. And a universal joint is arranged between the end part of the extension rod and the first fixing piece and / or between the end part of the extension sleeve and the second fixing piece. The convenient traction frame for the orthopedics department is not limited by the kirschner wire driving position, the traction effect is ideal, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a convenient orthopedic traction frame. Background Art

[0002] In orthopedic fracture surgery, when there are combined other injuries, temporary fixation by traction is required. Currently, manual traction is basically used clinically, or Kirschner wires are implanted in the calcaneus and ropes are connected to both ends and weights are used for traction. Both of these traction methods have some problems: Weight traction: 1. The traction force direction cannot be controlled and secondary adjustment is impossible; 2. When the affected limb moves, traction failure will occur; 3. The traction device is too large, affecting nursing and patient movement.

[0003] To solve the above problems, a combined external fixator has emerged in the prior art. For example, the utility model patent CN208973960U discloses a bilateral dynamic traction orthopedic external fixator. This external fixator uses a sleeved linear traction rod. When in use, the Kirschner wires at both ends of the bone to be tractioned need to be distributed along the force line of the bone to be tractioned, so as to ensure that the traction force of the linear traction rod is parallel to the force line of the bone to be tractioned; however, during surgery, there are often situations where the two Kirschner wires are not distributed along the force line of the bone to be tractioned. At this time, the above external fixator will result in unsatisfactory traction effect and poor postoperative recovery effect. In addition, the existing combined external fixators usually also have the following problems: complex surgical operation, long time, many accessories, high price, and inconvenient adjustment after surgery. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a convenient orthopedic traction frame that is not limited by the insertion position of the Kirschner wire, has an ideal traction effect, and is easy to operate.

[0005] To solve the above technical problem, the utility model provides the following technical solution:

[0006] A convenient orthopedic traction frame includes an upper positioning frame, a lower positioning frame, and an extension assembly connecting the upper positioning frame and the lower positioning frame, wherein:

[0007] The upper positioning frame is used to connect and fix the first Kirschner wire at one end of the bone to be tractioned, and the lower positioning frame is used to connect and fix the second Kirschner wire at the other end of the bone to be tractioned;

[0008] The extension assembly includes an extension sleeve, an extension rod, and a driving member for driving the relative movement of the extension rod and the extension sleeve. The upper end of the extension rod is connected to the upper positioning frame through a first fixing member, the lower end of the extension sleeve is connected to the lower positioning frame through a second fixing member, and a universal joint is provided between the end of the extension rod and the first fixing member and / or between the end of the extension sleeve and the second fixing member.

[0009] Further, self-drilling cutting edges are provided at the front ends of the first Kirschner wire and the second Kirschner wire;

[0010] and / or, self-tapping threads are provided in the middle parts of the first Kirschner wire and the second Kirschner wire.

[0011] Further, the upper positioning frame and the lower positioning frame are both semi-circular. The two ends of the upper positioning frame are respectively used for connecting the two ends of the first Kirschner wire, and the two ends of the lower positioning frame are respectively used for connecting the two ends of the second Kirschner wire.

[0012] Further, transverse through holes for accommodating the end parts of the Kirschner wires and locking members for locking the end parts of the Kirschner wires in the through holes are provided at both ends of the upper positioning frame and the lower positioning frame, wherein:

[0013] The locking member is a fixing bolt. The fixing bolt is located on the side of the through hole and its end extends into the through hole to squeeze and fix the corresponding Kirschner wire;

[0014] and / or, the cross sections of the upper positioning frame and the lower positioning frame are regular polygons.

[0015] Further, the extension rod is a threaded rod, the driving member is an adjusting knob axially fixed and circumferentially rotatably assembled at the upper end of the extension sleeve, and a threaded hole matching with the threaded rod is provided in the adjusting knob.

[0016] Further, the first fixing block is fixedly arranged at the upper end of the extension rod. A fixing groove for accommodating the upper positioning frame is provided on the inner side of the lower part of the first fixing block. The first fixing member is a fixing nut threadedly connected to the threaded rod and used for squeezing the upper positioning frame to fix the upper positioning frame in the fixing groove.

[0017] Further, an annular groove is provided on the side surface of the upper end of the extension sleeve. The part of the adjusting knob close to the upper end of the extension sleeve is sleeved on the extension sleeve and a positioning protrusion is provided on the inner side. The positioning protrusion extends into the annular groove.

[0018] Further, a slotted groove extending along the length direction thereof is provided on the extension sleeve, and a limiting post slidably connected in the slotted groove is provided at the lower end of the extension rod.

[0019] Further, the lower end of the extension sleeve is connected to the second fixing block through the universal joint. A through hole for accommodating the lower positioning frame is provided on the second fixing block. The second fixing member is a fixing bolt. The fixing bolt is located on the side of the through hole and its end extends into the through hole to squeeze and fix the lower positioning frame.

[0020] Further, the universal joint is a spherical universal joint;

[0021] And / or, the number of the extension components is three, two of which are located on both sides of the bone to be tractioned, and the other is located on the front side of the bone to be tractioned.

[0022] The utility model has the following beneficial effects:

[0023] For the convenient orthopedic traction rack of the utility model, a universal joint is arranged between the end of the extension rod and the first fixing member and / or between the end of the extension sleeve and the second fixing member, so that the direction of the extension component can be adjusted arbitrarily, ensuring that the extension component is consistent with the traction direction of the bone to be tractioned, facilitating the installation of the extension component. In this way, it is not limited by the position where the Kirschner wire is inserted, and it can be applied to the situation where the two Kirschner wires are not distributed along the line of force of the bone to be tractioned, and the traction effect is ideal and the postoperative recovery effect is good. Description of the Drawings

[0024] Figure 1 is a schematic diagram of the use state of the convenient orthopedic traction rack of the utility model;

[0025] Figure 2 is Figure 1 the schematic diagram of the structure of the first Kirschner wire in

[0026] Figure 3 is Figure 1 the schematic diagram of the assembly structure of the upper fixing frame and the first Kirschner wire in

[0027] Figure 4 is Figure 1 the schematic diagram of the assembly structure of the extension sleeve, the extension rod, the driving member and the universal joint in

[0028] Figure 5 is Figure 1 the schematic diagram of the structure of the extension rod in

[0029] Figure 6 is Figure 1 the schematic diagram of the assembly structure of the extension sleeve and the driving member in , where (a) is the front view and (b) is the sectional view of (a);

[0030] Figure 7 is Figure 1 the enlarged schematic diagram at the universal joint in , where (a) is the structure diagram in one direction and (b) is the structure diagram in another direction. Detailed Embodiments

[0031] To make the technical problems, technical solutions and advantages to be solved by the utility model clearer, the following will be described in detail with reference to the drawings and specific embodiments.

[0032] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is 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 to the present utility model.

[0033] The present utility model provides an orthopedic convenient traction rack, as Figure 1-7 shown, which includes an upper positioning frame 1, a lower positioning frame 2, and an extension assembly connecting the upper positioning frame 1 and the lower positioning frame 2, wherein:

[0034] The upper positioning frame 1 is used to connect and fix the first Kirschner wire 4 at one end of the bone 3 to be tractioned, and the lower positioning frame 2 is used to connect and fix the second Kirschner wire 5 at the other end of the bone 3 to be tractioned;

[0035] The extension assembly includes an extension sleeve 6, an extension rod 7, and a driving member 8 for driving the relative movement of the extension rod 7 and the extension sleeve 6. The upper end of the extension rod 7 is connected to the upper positioning frame 1 through a first fixing member 71, the lower end of the extension sleeve 6 is connected to the lower positioning frame 2 through a second fixing member 61, and a universal joint 9 is provided between the end of the extension rod 7 and the first fixing member 71 and / or between the end of the extension sleeve 6 and the second fixing member 61.

[0036] During use, after anesthesia, a Kirschner wire 4 and 5 are implanted on both sides of the bone 3 at the position where traction is required, passing through the skin on both sides. Manually traction the limb length in advance, and then connect the Kirschner wires 4 and 5 with the upper positioning frame 1 and the lower positioning frame 2 of the orthopedic convenient traction rack into one body, adjust the extension assembly to ensure that the extension assembly is consistent with the traction direction, and then determine the traction direction and length required. By driving the driving member 8, slightly adjust the limb length (see Figure 1 ).

[0037] For the orthopedic convenient traction rack of the present utility model, a universal joint is provided between the end of the extension rod and the first fixing member and / or between the end of the extension sleeve and the second fixing member, which can arbitrarily adjust the direction of the extension assembly to ensure that the extension assembly is consistent with the traction direction of the bone to be tractioned, facilitating the installation of the extension assembly. In this way, it is not limited by the position where the Kirschner wire is inserted, and it can be applied to the situation where the two Kirschner wires are not distributed along the line of force of the bone to be tractioned, and the traction effect is ideal and the postoperative recovery effect is good. For the orthopedic convenient traction rack of the present utility model, the two Kirschner wires are respectively connected to the two fracture ends and connected to the two positioning frames, and the movement of the two fracture ends is adjusted through the extension assembly to achieve the traction function.

[0038] Such as Figure 2As shown, self-drilling edges 41 may be provided at the front ends of the first Kirschner wire 4 and the second Kirschner wire 5. The self-drilling function facilitates passing through the bone. Self-tapping threads 42 may be provided in the middle portions of the first Kirschner wire 4 and the second Kirschner wire 5. The self-tapping threads 42 contact the bone at the middle position, and can prevent the Kirschner wires 4 and 5 from moving in the bone after fixation.

[0039] As Figure 1 and Figure 3 shown, the upper positioning frame 1 and the lower positioning frame 2 may both be semi-circular. At this time, the two ends of the upper positioning frame 1 are respectively used to connect the two ends of the first Kirschner wire 4, and the two ends of the lower positioning frame 2 are respectively used to connect the two ends of the second Kirschner wire 5. Specifically, they may be formed by bending a main body round rod, which is convenient for connecting with the extension assembly and adjusting the direction of the extension assembly.

[0040] Both ends of the upper positioning frame 1 and the lower positioning frame 2 may be provided with transverse through holes 11 for accommodating the ends of the Kirschner wires 4 and 5, and locking members 12 for locking the ends of the Kirschner wires 4 and 5 in the through holes 11, so as to facilitate the connection and fixation of the Kirschner wires 4 and 5. The locking member 12 is preferably a fixing bolt. The fixing bolt is located on the side of the through hole 11 and its end extends into the through hole 11 to squeeze and fix the corresponding Kirschner wires 4 and 5, so as to facilitate the firm fixation of the Kirschner wires 4 and 5. The cross-sections of the upper positioning frame 1 and the lower positioning frame 2 may be regular polygons to cooperate with the first fixing member 71 and the second fixing member 61 for more firm locking.

[0041] The driving member 8 may adopt various structural forms that are easily conceivable by those skilled in the art. For example, the side surface of the extension rod is provided with a tooth surface, and the driving member is a gear rotatably assembled on the extension sleeve and meshing with the tooth surface; however, for the convenience of implementation, the present utility model preferably adopts the following structural form:

[0042] As Figure 1 、 Figure 4 and Figure 6 shown, the extension rod 7 may be a threaded rod, and the driving member 8 is an adjusting knob axially fixed and circumferentially rotatably assembled at the upper end of the extension sleeve 6. A threaded hole 82 matching the threaded rod is provided in the adjusting knob. At this time, rotating the adjusting knob can make the extension rod 7 and the extension sleeve 6 move relative to each other to adjust the overall length of the extension assembly.

[0043] Among them, the axial fixation and circumferential rotational assembly preferably adopt the following structural form:

[0044] As Figure 6 shown, an annular groove 62 may be provided on the side surface of the upper end of the extension sleeve 6. The part of the adjusting knob close to the upper end of the extension sleeve 6 is sleeved on the extension sleeve 6 and a positioning protrusion 81 is provided on the inner side. The positioning protrusion 81 extends into the annular groove 62.

[0045] As Figure 4-6As shown, a slot 63 extending along the length direction can be provided on the extension sleeve 6. A limit post 72 slidably connected in the slot 63 is provided at the lower end of the extension rod 7. The limit post 72 and the slot 63 cooperate with each other to play a guiding role and prevent the extension rod 7 and the extension sleeve 6 from disengaging during the relative movement.

[0046] As Figure 1 and Figure 5 shown, a first fixing block 73 can be directly fixed to the upper end of the extension rod 7. A fixing groove 731 for accommodating the upper positioning frame 1 is provided on the inner side of the lower part of the first fixing block 73. The first fixing member 71 is a fixing nut threadedly connected to the threaded rod and used to squeeze the upper positioning frame 1 to fix the upper positioning frame 1 in the fixing groove 731, so as to facilitate the connection and fixation of the upper end of the extension rod 7 to the upper positioning frame 1, and the firmness is good.

[0047] As Figure 1 and Figure 7 shown, the lower end of the extension sleeve 6 can be connected to a second fixing block 64 through a universal joint 9. A through hole 641 for accommodating the lower positioning frame 2 is provided on the second fixing block 64. The second fixing member 61 is a fixing bolt. The fixing bolt is located on the side of the through hole 641 and its end extends into the through hole 641 to squeeze and fix the lower positioning frame 2, so as to facilitate the connection and fixation of the lower end of the extension sleeve 6 to the lower positioning frame 2, and the firmness is good. It can be imagined that the first fixing member 71 and the second fixing member 61 can also adopt the conventional settings in the art, such as fixing clips, etc.

[0048] As Figure 6-7 shown, the universal joint 9 is preferably a spherical universal joint, and specifically can be connected by a pin. Figure 6 In (a), the reference numeral 65 is a universal ball. As Figure 1 shown, the number of the extension assemblies can be three, two of which are located on both sides of the bone to be tractioned 3, and the other is located in front of the bone to be tractioned 3. In this setting method, the traction effect is better.

[0049] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A convenient orthopedic traction frame, characterized in that: It includes an upper positioning frame, a lower positioning frame, and an extension component connecting the upper positioning frame and the lower positioning frame, wherein: The upper positioning frame is used to connect to a first Kirschner wire fixed to one end of the bone to be distracted, and the lower positioning frame is used to connect to a second Kirschner wire fixed to the other end of the bone to be distracted; The extension assembly includes an extension sleeve, an extension rod, and a driving member for driving the extension rod and the extension sleeve to move relative to each other. The upper end of the extension rod is connected to the upper positioning frame via a first fixing member, and the lower end of the extension sleeve is connected to the lower positioning frame via a second fixing member. A universal joint is provided between the end of the extension rod and the first fixing member and / or between the end of the extension sleeve and the second fixing member.

2. The orthopedic convenient traction frame according to claim 1, characterized in that: The front ends of the first Kirschner wire and the second Kirschner wire are both provided with self-drilling cutting edges; And / or, the middle parts of the first Kirschner wire and the second Kirschner wire are both provided with self-tapping threads.

3. The orthopedic convenient traction frame according to claim 1, characterized in that: The upper positioning frame and the lower positioning frame are both semi-circular, and the two ends of the upper positioning frame are respectively used to connect the two ends of the first Kirschner wire, and the two ends of the lower positioning frame are respectively used to connect the two ends of the second Kirschner wire.

4. The orthopedic convenient traction frame according to claim 3, characterized in that: Both ends of the upper positioning frame and the lower positioning frame are provided with a transverse through hole for accommodating the end of the Kirschner wire, and a locking piece for locking the end of the Kirschner wire in the through hole, wherein: The locking member is a fixing bolt, which is located on the side of the through hole and has a tip extending into the through hole to squeeze and fix the corresponding Kirschner wire; And / or, the cross sections of the upper positioning frame and the lower positioning frame are regular polygons.

5. The orthopedic convenient traction frame according to any one of claims 1 to 4, characterized in that: The extension rod is a threaded rod, and the driving member is an adjusting knob which is axially fixed and circumferentially rotatably assembled on the upper end of the extension sleeve, and a threaded hole which matches the threaded rod is arranged in the adjusting knob.

6. The orthopedic convenient traction frame according to claim 5, characterized in that: A first fixing block is fixed to the upper end of the extension rod, and a fixing groove for accommodating the upper positioning frame is provided on the inner side of the lower portion of the first fixing block. The first fixing member is a fixing nut threadedly connected to the threaded rod and used to squeeze the upper positioning frame to fix the upper positioning frame in the fixing groove.

7. The orthopedic convenient traction frame according to claim 5, characterized in that: An annular groove is provided on the side surface of the upper end of the extension sleeve, and the portion of the adjusting knob close to the upper end of the extension sleeve is sleeved on the extension sleeve and a positioning protrusion is provided on the inner side, and the positioning protrusion extends into the annular groove.

8. The orthopedic convenient traction frame according to claim 5, characterized in that: The extension sleeve is provided with a slot extending along the length direction thereof, and the lower end of the extension rod is provided with a limiting column slidably connected in the slot.

9. The orthopedic convenient traction frame according to claim 5, characterized in that: The lower end of the extension sleeve is connected to the second fixed block through the universal joint. The second fixed block is provided with a through hole for accommodating the lower positioning frame. The second fixing member is a fixing bolt, which is located on the side of the through hole and the end of the fixing bolt extends into the through hole to squeeze and fix the lower positioning frame.

10. The orthopedic convenient traction frame according to claim 5, characterized in that: The universal joint is a ball-type universal joint; And / or, the number of the extension components is three, two of which are located on both sides of the bone to be distracted, and the other is located on the front side of the bone to be distracted.

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