Patella positioner capable of defining needle withdrawing position

Abstract

The utility model discloses a patella positioner with clear needle withdrawing position, which comprises a handle and a positioning frame II, the end part of the handle is fixedly connected with a positioning frame I, the two ends of the positioning frame I are fixedly connected with inserting blocks, the two ends of the positioning frame II are provided with inserting holes, the inserting blocks are inserted into the inserting holes, and the inserting blocks are inserted into the inserting holes. The outer wall of the second positioning frame is rotationally connected with a butterfly-shaped button, and a fixing device for fixing the inserting block is installed on the outer wall of the second positioning frame. Through the linkage design of the inserting block, the inserting rod and the spring, the first positioning frame and the second positioning frame can surround the patella and form a preliminary stable supporting structure, the elastic acting force of the spring provides additional fixing force, it is guaranteed that the device cannot move or loosen in the using process, and the patella fixing device can be used for fixing the patella. Compared with the situation that in the background technology, an operator needs to hold a handle to keep the device stable, the stability of the device is improved, movement or inclination caused by hand fatigue or misoperation is reduced, and the positioning accuracy in the operation process is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of patella positioning, especially to a patella positioner that clearly shows needle position. BACKGROUND

[0002] The patella is located in front of the knee joint and forms the patellofemoral joint with the femoral trochlea. With the extension and flexion of the knee joint, the patella moves up and down in the trochlea, and the patella mainly plays a role in transmitting and enhancing the quadriceps femoris, which is very important for maintaining the stability of the knee joint.

[0003] The utility model discloses a kind of patella positioners that clearly show needle position, the device when using, arc frame is supported on patella, and it is contacted with skin or puncture skin and patella by the aid of butterfly-shaped twist round cone portion, but when using specifically, butterfly-shaped twist can be positioned and fixed to arc frame, but mainly rely on operator hand-held handle to ensure the stability of whole, this means that the stability of device when using is directly related to the operation skill and hand-holding force of operator, it is prone to cause the movement or inclination of positioner due to improper operation or hand fatigue, to affect positioning accuracy, increase the possibility of surgical error, therefore the above-mentioned problems need to be proposed to a kind of patella positioner that clearly show needle position. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a patella positioner that clearly shows needle position.

[0005] To achieve the above object, the utility model adopts the following technical scheme:

[0006] A kind of patella positioner that clearly shows needle position, including handle and positioning frame two, the handle end portion is fixedly connected with positioning frame one, the positioning frame one both ends are fixedly connected with plug block, the positioning frame two both ends are equipped with insertion hole, the plug block is inserted in insertion hole, the positioning frame one and the inner and outer wall of positioning frame two are arc-shaped, the positioning frame one outer wall is equipped with kirschner wire, the positioning frame one outer wall is equipped with positioning hole, the positioning hole and kirschner wire are on the same axis, the positioning frame two outer wall is rotatably connected with butterfly-shaped twist, the positioning frame two outer wall is equipped with the fixed device of plug block.

[0007] Preferably, the fixed device includes two groups of insertion rods slidingly connected to the outer wall of the positioning frame two, the end portions of the two groups of insertion rods extend into the insertion hole and are inserted into the plug block.

[0008] Preferably, the end portion of the insertion rod is fixedly connected with a limiting block, and the radius size of the limiting block is greater than the radius size of the insertion rod.

[0009] Preferably, the outer wall of the inserting rod is sleeved with a spring, one end of the spring is fixedly connected to the outer wall of the positioning frame two, and the other end of the spring is fixedly connected with the limiting block.

[0010] Preferably, one end of the inserting block is obliquely arranged, and the end of the inserting rod is in contact with the outer wall of the inserting block.

[0011] Preferably, a plurality of grooves are formed in the outer wall of the handle, and the plurality of grooves are equidistantly formed.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model discloses a positioning frame one and a positioning frame two can surround the patella and form a preliminary stable support structure through the linkage design of the inserting block, the inserting rod and the spring, and the elastic force of the spring provides additional fixing force, ensures that the device does not displace or loosen in the use process, compared with the case that the device stability needs to be kept by the operator holding the handle in the prior art, the stability of the device is improved, the movement or inclination caused by hand fatigue or improper operation is reduced, and the positioning accuracy in the operation process is ensured.

[0014] 2. The utility model discloses the coaxial design of the positioning hole on the positioning frame one and the kirsch nail, the needle position is clear and accurate, the positioning hole and the kirsch nail keep the same axis, ensure that the operator can accurately position the needle position when wearing the kirsch nail, and the error in operation is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model provides a structure schematic diagram of the patella positioner of clear needle position;

[0016] Figure 2 For Figure 1 The structure schematic diagram of the positioning frame one and the positioning frame two in the middle.

[0017] Figure 3 For Figure 2 The structure schematic diagram of the positioning frame two and the inserting block in the middle.

[0018] Figure 4 For Figure 2 The structure schematic diagram of the inserting block, the inserting rod and the spring in the middle.

[0019] In the drawing: 1, handle;2, positioning frame one;3, positioning frame two;4, positioning hole;5, kirsch nail;6, butterfly twist;7, inserting block;8, inserting hole;9, inserting rod;10, limiting block;11, spring. DETAILED DESCRIPTION

[0020] Clearly, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments.

[0021] Referring to Figures 1-4 A patella positioner that explicitly shows the needle position, including handle 1 and positioning frame two 3, handle 1 end fixedly connected with positioning frame one 2, positioning frame one 2 both ends are fixedly connected with the plug block 7, positioning frame two 3 both ends are provided with the insertion hole 8, the plug block 7 is inserted in the insertion hole 8, the inner and outer wall of positioning frame one 2 and positioning frame two 3 are arc-shaped, the Kirschner wire 5 is arranged through the outer wall of positioning frame one 2, the positioning hole 4 is arranged on the outer wall of positioning frame one 2, the positioning hole 4 and the Kirschner wire 5 are on the same axis, the butterfly-shaped twist 6 is rotatably connected to the outer wall of positioning frame two 3, the fixing device that the plug block 7 is fixed is installed on the outer wall of positioning frame two 3, by the combination of positioning frame one 2 and positioning frame two 3, the patella can be surrounded, more stable support and fixation are provided, compared with single support mode, the design of double positioning frame can effectively reduce the movement and inclination of the device, ensure that the patella remains stable during operation, improve the overall positioning accuracy.

[0022] The fixing device includes two groups of insertion rods 9 slidably connected to the outer wall of positioning frame two 3, the two groups of insertion rods 9 end portions are extended to the insertion hole 8 inside and are inserted into the plug block 7, the insertion rod 9 end portion is fixedly connected with the limiting block 10, the limiting block 10 radius size is greater than the insertion rod 9 radius size, the spring 11 is sleeved on the outer wall of the insertion rod 9, one end of the spring 11 is fixedly connected to the outer wall of positioning frame two 3, the other end of the spring 11 is fixedly connected with the limiting block 10, one end of the plug block 7 is inclinedly arranged, the insertion rod 9 end portion is in contact with the outer wall of the plug block 7, a plurality of grooves are arranged on the outer wall of the handle 1, and the plurality of grooves are arranged at equal intervals, by inserting the insertion rod 9 into the plug block 7, the positioning frame one 2 and the positioning frame two 3 can be fixed, and by cooperating with the spring 11, the positioning frame one 2 and the positioning frame two 3 can be quickly installed and disassembled.

[0023] In the utility model, when the device is used, the positioning frame one 2 and the positioning frame two 3 at the handle 1 end are combined, the arc-shaped positioning frame one 2 is abutted on the patella, the positioning frame one 2 and the positioning frame two 3 are inserted in the insertion hole 8 through the plug block 7, in the process, the abutment of the plug block 7 and the insertion rod 9 drives the insertion rod 9 to slide upwards, simultaneously stretches the spring 11, so that the positioning frame one 2 and the positioning frame two 3 can surround the patella, thereby forming a preliminary stable support structure, when the insertion rod 9 slides to the specified position, the insertion rod 9 is inserted into the plug block 7 under the restoring force of the spring 11.

[0024] The handle 1 is used to operate the angle and position of the positioning frame, so that the positioning frame 2 can closely fit the external shape of the patella, the spring 11 provides additional fixing force to the connection between the positioning frame 2 and the positioning frame 3 through elastic force, and the device is ensured not to be displaced or loosened during use.

[0025] Then, the positioning frame 2 and the positioning frame 3 are further fixed on the patella through the rotation of the butterfly-shaped knob 6, which makes the positioning frame 2 firmly abut against the patella and prevents the positioning frame 2 from being inclined or displaced during operation, thereby improving the stability and operation accuracy of the device.

[0026] When the positioning frame 2 and the positioning frame 3 completely surround the patella, the needle position is determined through the positioning hole 4 on the positioning frame 2, since the positioning hole 4 is on the same axis as the Kirschner wire 5, the operator can accurately insert the Kirschner wire 5 through the positioning hole 4, thereby ensuring the accuracy of the needle position.

[0027] After the operation is completed, the operator can quickly disassemble the positioning frame 2 and the positioning frame 3 through the design of the spring 11 and the insertion rod 9, thereby restoring the original state of the device and facilitating quick storage and repeated use.

[0028] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A patella positioner for locating the position of a needle comprising a handle (1) and a positioning bracket (2), characterized in that, The handle (1) end fixedly connected with positioning frame one (2), the positioning frame one (2) both ends are fixedly connected with the plug block (7), the positioning frame two (3) both ends are provided with the insertion hole (8), the plug block (7) is inserted in the insertion hole (8) inside, the positioning frame one (2) and the positioning frame two (3) inside and outside wall are arc-shaped, the positioning frame one (2) outside wall is provided with the kirsch (5), the positioning frame one (2) outside wall is provided with the positioning hole (4), the positioning hole (4) and the kirsch (5) are on the same axis, the positioning frame two (3) outside wall is rotatably connected with the butterfly twist (6), the positioning frame two (3) outside wall is installed with the fixed device of the plug block (7) fixed.

2. The patellar positioner of claim 1, wherein, The fixing device includes two groups of plug rods (9) slidingly connected to the outer wall of the positioning frame two (3), both ends of the two groups of plug rods (9) extend into the insertion hole (8) and are inserted into the plug block (7).

3. The patellar positioner of claim 2, wherein, The end of the plug rod (9) is fixedly connected with a limiting block (10), and the radius size of the limiting block (10) is greater than the radius size of the plug rod (9).

4. The patellar positioner of claim 3, wherein, The outer wall of the plug rod (9) is provided with a spring (11), one end of the spring (11) is fixedly connected to the outer wall of the positioning frame two (3), and the other end of the spring (11) is fixedly connected with the limiting block (10).

5. The patellar positioner of claim 4, wherein, One end of the plug block (7) is inclined, and the end of the plug rod (9) is in contact with the outer wall of the plug block (7).

6. The patellar positioner of claim 5, wherein, The outer wall of the handle (1) is provided with a plurality of grooves, and a plurality of grooves are provided at equal intervals.

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