An automatically regulating Ilizarov medical device

Abstract

The present application discloses an automatically adjustable Ilizarov medical device, which relates to the technical field of medical devices, and comprises: a model, on which a fixing ring is sleeved; the fixing ring is arranged in plurality, and a plurality of holes are opened on the circumference of the fixing ring; a Kirschner wire passes through the model, i.e., the bone, and is fixed to the fixing ring by a fixing pin; a main adjustment component is connected to the fixing ring, and the main adjustment component comprises an upper support plate bracket, a lower support plate bracket, a guide rod, a pneumatic component and a monitoring component, and the upper support plate bracket and the lower support plate bracket are respectively fixed on adjacent fixing rings; the guide rod is arranged in plurality, and the guide rod is fixedly arranged with the lower support plate bracket, and the guide rod is slidingly arranged with the upper support plate bracket; the pneumatic component is arranged between the upper support plate bracket and the lower support plate bracket, and the monitoring component is arranged on the pneumatic component.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to an automatically adjustable Ilizarov medical device. Background Art

[0002] Human bones, like the connective tissue and epithelial tissue in the human body, have great regenerative and plasticity. According to the laws of bone development and growth, external force can be used to intervene in bone growth or shortening, treat bone problems caused by trauma, congenital defects or acquired deformities, and correct and repair bones. Based on the above content, the tension-stress law of tractional tissue regeneration is formed, namely the Ilizarov technique or minimally invasive external fixation technology; various limb deformities can be treated through the Ilizarov three-dimensional instrument configuration, especially the correction of severe limb deformities. It is also used to treat complex fractures, congenital hip joint diseases, tibial pseudarthrosis, foot deformities, nonunion, bone defects, and other diseases. This technology itself has the characteristics of less trauma, good efficacy, short operation time, and less pain.

[0003] Traditional Ilizarov medical devices are mainly composed of structures such as hole rings, fine needles, threaded rods, and hinges. The length of the fixed frame (connecting rod) is adjusted by adjusting the nut and threaded rod, and multiple tools are needed for adjustment operations. The whole process is time-consuming and labor-intensive. Moreover, both the control of accuracy during the adjustment process and the measurement of length after adjustment are not easy to operate, and the adjustment accuracy and measurement accuracy are difficult to grasp, affecting the efficiency and effectiveness of the entire treatment process. In addition, the entire adjustment process is staged, and bone regeneration is continuous. The gap can easily cause various complications.

[0004] Therefore, it is necessary to provide an automatically adjustable Ilizarov medical device to solve the problems raised in the above background technology. Summary of the Invention

[0005] To achieve the above objectives, the present application provides the following technical solution: an automatically adjustable Ilizarov medical device, comprising:

[0006] A model, on which a fixing ring is sleeved;

[0007] The fixing rings are arranged in a plurality, and a plurality of holes are opened on the circumference of the fixing rings. The fixing rings are pre-assembled and fixed to each other by fixing pins and auxiliary adjustment components before being sleeved on the model;

[0008] a Kirschner wire, passing through the model, i.e., the bone, and fixed to the fixing ring via a fixing pin;

[0009] A main adjustment assembly is connected to the fixing ring, and the main adjustment assembly includes an upper support plate bracket, a lower support plate bracket, a guide rod, a pneumatic assembly and a monitoring assembly, facing the direction of the model foot, and the upper support plate bracket and the lower support plate bracket are respectively fixed to the adjacent fixing rings;

[0010] The guide rods are arranged in a plurality, and the guide rods are fixedly arranged with the lower support plate bracket, the guide rods are slidably arranged with the upper support plate bracket, and a guide sleeve is fixedly arranged on the upper support plate bracket for guiding the guide rods;

[0011] The pneumatic component is arranged between the upper support plate bracket and the lower support plate bracket, and the monitoring component is arranged on the pneumatic component.

[0012] Further, preferably, the pneumatic component includes:

[0013] A pneumatic cylinder is fixedly arranged below the lower support plate bracket, and a pneumatic valve connected to an external air source is provided on the pneumatic cylinder;

[0014] An adjusting rod is slidably disposed in the pneumatic cylinder, and the adjusting rod extends upward to the upper support plate bracket, and the adjusting rod is fixedly connected to the upper support plate bracket;

[0015] The sleeve is mounted on the adjusting rod, and the lower end of the sleeve is fixed on the pneumatic cylinder and the lower support plate bracket through a connecting rod.

[0016] Further, as a preference, the adjusting rod is arranged through the lower support plate bracket and the hole, wherein the fixing ring is clamped between the lower support plate bracket and the pneumatic cylinder;

[0017] In addition, the adjusting rod passes through the upper supporting plate bracket and the hole, and the lower end surface of the upper supporting plate bracket is directly fixed on the contacting fixing ring.

[0018] Furthermore, preferably, the monitoring component includes:

[0019] A pad, fixedly arranged on the upper end surface of the lower support plate bracket;

[0020] The measuring meter is fixedly arranged on the lower supporting plate bracket, and the pad is provided with a distance measuring tube connecting the measuring meter and the sleeve.

[0021] Furthermore, preferably, the main adjustment assembly further includes a pull rod, and the pull rod is arranged below the upper support plate bracket.

[0022] Furthermore, preferably, the auxiliary adjustment component includes:

[0023] The second adapter rod passes through two adjacent fixing rings, and is located at the fixing ring position where the upper support plate bracket is located. A locking nut and a fixing nail are sleeved on the second adapter rod to clamp and fix the fixing ring;

[0024] An auxiliary sliding sleeve is sleeved on the second transfer rod, a sliding sleeve rod is provided at the lower end of the auxiliary sliding sleeve, and a grooved guide cylinder is slidably provided in the auxiliary sliding sleeve, and the grooved guide cylinder is fixedly sleeved on the second transfer rod;

[0025] an adjusting sleeve, slidably sleeved on the sleeve rod, and a pressure spring is provided between the adjusting sleeve and the auxiliary sleeve, and the pressure spring is sleeved on the sleeve rod;

[0026] The fixing seat is fixedly arranged on the fixing ring where the lower supporting plate bracket is located, and the adjusting sleeve is fixedly arranged on the fixing seat.

[0027] Furthermore, preferably, at the position of the fixing ring where the lower support plate bracket is located, the transfer rod 2 passes through the auxiliary sliding sleeve, sliding sleeve rod, adjustment sleeve and fixed seat, passes through the fixing ring, and the above-mentioned fixing ring and transfer rod 2 are fixed by the fixing nail, and the transfer rod 2 can be pulled and adjusted.

[0028] Furthermore, preferably, the fixing nail includes a nail cap and a fastening nail, and the Kirschner wire and the fixing ring can be fixed together with the help of the transfer rod 1 and the locking nut. Similarly, the fixing nail can fix the transfer rod 2 and the fixing ring.

[0029] Furthermore, preferably, arc-shaped grooves are evenly distributed on the grooved guide cylinder to control the sliding of the second transfer rod in the auxiliary sliding sleeve.

[0030] Furthermore, as a preference, during the pulling process of the second transfer rod, the grooved guide cylinder can contact the sliding sleeve rod to drive the auxiliary sliding sleeve to squeeze the pressure spring.

[0031] Compared with the prior art, the present application provides an automatically adjustable Ilizarov medical device, which has the following beneficial effects:

[0032] When used, the present application passes the Kirschner wire through the bone, and first assembles the auxiliary adjustment component, the fixed ring and the main adjustment component, and then fixes the Kirschner wire on the fixed ring by a fixing nail, and controls the two fixed rings to continuously move relative to each other through the main adjustment component, and monitors the movement state, while assisting the fixed ring movement through the auxiliary adjustment component to control the sliding of the osteotomized bone segment, so that bone regeneration occurs at the osteotomy site and bone defects are repaired; during distraction osteogenesis, the present application can control the continuous bone movement through the main adjustment component, which is equivalent to the original multiple times a day, each time a small amount, such as 4 times / day, each time 0.25mm, and the whole process is smoother, which can reduce the occurrence of complications such as pain, vascular and nerve damage, thermal damage, and compartment syndrome during distraction osteogenesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0034] Figure 1 A schematic diagram of the overall structure of an automatically adjustable Ilizarov medical device;

[0035] Figure 2 It is an automatic regulating Ilizarov medical device. Figure 1 A magnified schematic diagram of point A in the middle;

[0036] Figure 3 A schematic diagram of the main adjustment component structure of an automatically adjustable Ilizarov medical device;

[0037] Figure 4 A schematic diagram of the structure of an auxiliary adjustment component of an automatically adjustable Ilizarov medical device;

[0038] Figure 5 A schematic diagram of the grooved guide tube structure of an automatically adjustable Ilizarov medical device;

[0039] In the figure: 1. Model; 2. Fixing ring; 21. Hole; 3. Kirschner wire; 4. Fixing nail; 41. Nail cap; 42. Adapter rod 1; 43. Fastening nail; 5. Main adjustment assembly; 51. Upper support plate bracket; 52. Lower support plate bracket; 53. Guide rod; 54. Guide sleeve; 55. Pneumatic assembly; 551. Pneumatic cylinder; 552. Sleeve; 553. Adjusting rod; 554. Pneumatic valve; 56. Pull rod; 57. Monitoring assembly; 571. Spacer; 572. Distance measuring tube; 573. Measuring table; 6. Auxiliary adjustment assembly; 61. Adapter rod 2; 62. Locking nut; 63. Auxiliary sleeve; 631. Sleeve rod; 64. Grooved guide cylinder; 641. Arc groove; 65. Adjusting sleeve; 66. Pressure spring; 67. Fixing seat. DETAILED DESCRIPTION

[0040] See also Figure 1-Figure 5 In an embodiment of the present application, an automatically adjustable Ilizarov medical device comprises:

[0041] Model 1, specifically constructed in the style of a leg skeleton to assist in explanation, with a fixing ring 2 sleeved thereon;

[0042] The fixing rings 2 are arranged in multiple numbers, and multiple holes 21 are opened on the circumference of the fixing rings 2. The fixing rings 2 are pre-assembled and fixed to each other by fixing pins 4 and auxiliary adjustment components 6 before being sleeved on the model 1.

[0043] The Kirschner wire 3 passes through the model 1, i.e., the bone, and is fixed to the fixing ring 2 via the fixing pin 4;

[0044] A main adjustment assembly 5 is connected to the fixing ring 2 and includes an upper support plate bracket 51, a lower support plate bracket 52, a guide rod 53, a pneumatic assembly 55, and a monitoring assembly 57. The upper support plate bracket 51 and the lower support plate bracket 52 are respectively fixed to adjacent fixing rings 2 toward the feet of the model 1.

[0045] The guide rods 53 are arranged in plurality, and the guide rods 53 are fixed to the lower support plate bracket 52, and the guide rods 53 are slidably arranged with the upper support plate bracket 51, and a guide sleeve 54 is fixedly provided on the upper support plate bracket 51 for guiding the guide rods 53;

[0046] The pneumatic assembly 55 is disposed between the upper support plate bracket 51 and the lower support plate bracket 52 , and the monitoring assembly 57 is disposed on the pneumatic assembly 55 .

[0047] When it needs to be explained, when in use, the Kirschner wire 3 is passed through the bone, and the auxiliary adjustment component 6, the fixed ring 2 and the main adjustment component 5 are assembled first, and then the Kirschner wire 3 is fixed to the fixed ring 2 by the fixing nail 4, and the two fixed rings 2 are controlled by the main adjustment component 5 to continuously move relative to each other, and the movement state is monitored. At the same time, the auxiliary adjustment component 6 assists the movement of the fixed ring 2 to control the sliding of the osteotomized bone segment, so that bone regeneration occurs at the osteotomy site and bone defects are repaired; during distraction osteogenesis in this application, the main adjustment component 5 can be used to control the continuous bone movement, which is equivalent to the original multiple times a day, each time a small amount, such as 4 times / day, each time 0.25mm, and the whole process is smoother, which can reduce the occurrence of complications such as pain, vascular and nerve damage, thermal damage, and compartment syndrome during distraction osteogenesis.

[0048] In this embodiment, Figure 3 , the pneumatic component 55 includes:

[0049] A pneumatic cylinder 551 is fixedly disposed below the lower support plate bracket 52 and is provided with a pneumatic valve 554 connected to an external air source;

[0050] An adjusting rod 553 is slidably disposed in the pneumatic cylinder 551 , and the adjusting rod 553 extends upward to the upper support plate bracket 51 , and the adjusting rod 553 is fixedly connected to the upper support plate bracket 51 ;

[0051] The sleeve 552 is mounted on the adjusting rod 553 , and the lower end of the sleeve 552 is fixed to the pneumatic cylinder 551 and the lower support plate bracket 52 through a connecting rod.

[0052] As a preferred embodiment, the adjusting rod 553 is provided through the lower support plate bracket 52 and the hole 21, wherein the lower support plate bracket 52 and the pneumatic cylinder 551 clamp the fixing ring 2 therebetween;

[0053] In addition, the adjusting rod 553 is set through the upper supporting plate bracket 51 and the hole 21, and the lower end surface of the upper supporting plate bracket 51 is directly fixed on the contacting fixing ring 2.

[0054] It should be explained that the air supply from the pneumatic valve 554 controls the sliding of the adjustment rod 553, and then the upper support plate bracket 51 and the lower support plate bracket 52 move relative to each other to perform the distraction osteogenesis process, and continuous adjustment is achieved by continuous changes in air pressure.

[0055] In this embodiment, Figure 3 , the monitoring component 57 includes:

[0056] A pad 571 is fixedly mounted on the upper end surface of the lower support plate bracket 52;

[0057] The measuring gauge 573 is fixedly mounted on the lower support plate bracket 52 , and a distance measuring tube 572 is mounted on the pad 571 to connect the measuring gauge 573 and the sleeve 552 .

[0058] It should be explained that a displacement detector is set in the distance measuring tube 572 to monitor the relative sliding distance between the adjustment rod 553 and the sleeve 552, and the result is displayed and recorded in the measurement table 573. The speed of the entire pulling process is determined by time comparison, which facilitates control and adjustment.

[0059] As a preferred embodiment, the main adjustment component 5 further includes a pull rod 56 , which is disposed below the upper support plate bracket 51 and is specifically used to manually adjust the position of the upper support plate bracket 51 .

[0060] In this embodiment, Figure 4 , the auxiliary adjustment component 6 includes:

[0061] The second transfer rod 61 passes through two adjacent fixing rings 2, at the position of the fixing ring 2 where the upper support plate bracket 51 is located. The second transfer rod 61 is sleeved with a locking nut 62 and a fixing pin 4 to clamp and fix the fixing ring 2;

[0062] An auxiliary sliding sleeve 63 is sleeved on the second transfer rod 61 . A sliding sleeve rod 631 is provided at the lower end of the auxiliary sliding sleeve 63 . A grooved guide cylinder 64 is slidably provided in the auxiliary sliding sleeve 63 . The grooved guide cylinder 64 is fixedly sleeved on the second transfer rod 61 .

[0063] An adjusting sleeve 65 is slidably sleeved on the sleeve rod 631 , and a pressure spring 66 is provided between the adjusting sleeve 65 and the auxiliary sleeve 63 , and the pressure spring 66 is sleeved on the sleeve rod 631 ;

[0064] The fixing seat 67 is fixedly disposed on the fixing ring 2 where the lower supporting plate bracket 52 is located, and the adjusting sleeve 65 is fixedly disposed on the fixing seat 67 .

[0065] As a preferred embodiment, at the position of the fixing ring 2 where the lower support plate bracket 52 is located, the transfer rod 2 61 passes through the auxiliary sliding sleeve 63, the sliding sleeve rod 631, the adjustment sleeve 65 and the fixing seat 67, passes through the fixing ring 2, and the above-mentioned fixing ring 2 and the transfer rod 2 61 are fixed by the fixing nail 4. The transfer rod 2 61 can be pulled and adjusted.

[0066] As a preferred embodiment, the fixing nail 4 includes a nail cap 41 and a fastening nail 43. With the help of the transfer rod 1 42 and the locking nut 62, the Kirschner wire 3 and the fixing ring 2 can be fixed together. Similarly, the fixing nail 4 can fix the transfer rod 2 61 and the fixing ring 2.

[0067] As a preferred embodiment, arc-shaped grooves 641 are evenly distributed on the grooved guide cylinder 64 to control the sliding of the second transfer rod 61 in the auxiliary sliding sleeve 63, which can specifically make the sliding of the second transfer rod 61 more stable.

[0068] As a preferred embodiment, during the pulling process of the second transfer rod 61 , the grooved guide cylinder 64 can contact the sliding sleeve rod 631 to drive the auxiliary sliding sleeve 63 to squeeze the pressure spring 66 .

[0069] It should be explained that when the adjustment rod 553 is pulled to adjust the relative position of the two fixing rings 2, the pressure spring 66 allows the two fixing rings 2 to move closer to or farther away from each other without adjusting the relative position of the adapter rod 2 61 and the fixing ring 2. At the same time, the pressure spring 66 can provide a force to maintain the relative position of the fixing rings 2, thereby avoiding problems such as pain caused by the loosening of the fixing rings 2 during later use.

[0070] During the specific implementation, if explanation is needed, the Kirschner wire 3 is passed through the bone during use, and the auxiliary adjustment component 6, the fixed ring 2 and the main adjustment component 5 are assembled first, and then the Kirschner wire 3 is fixed to the fixed ring 2 by the fixing pin 4, and the two fixed rings 2 are controlled by the main adjustment component 5 to continuously move relative to each other, and the movement state is monitored. At the same time, the auxiliary adjustment component 6 assists the movement of the fixed ring 2, controls the sliding of the osteotomized bone segment, causes bone regeneration at the osteotomy site, and repairs the bone defect.

[0071] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and application concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. An automatically adjustable Ilizarov medical device, characterized in that: include: A model (1) having a fixing ring (2) sleeved thereon; The fixing rings (2) are arranged in plurality, and a plurality of holes (21) are provided on the circumference of the fixing rings (2). The fixing rings (2) are pre-assembled and fixed to each other by fixing pins (4) and auxiliary adjustment components (6) before being sleeved on the model (1); A Kirschner wire (3) passes through the model (1), i.e., the bone, and is fixed to the fixing ring (2) via a fixing pin (4); A main adjustment component (5) is connected to the fixing ring (2), and the main adjustment component (5) includes an upper support plate bracket (51), a lower support plate bracket (52), a guide rod (53), a pneumatic component (55) and a monitoring component (57), facing the foot of the model (1), and the upper support plate bracket (51) and the lower support plate bracket (52) are respectively fixed on the adjacent fixing ring (2); The guide rods (53) are arranged in plurality, and the guide rods (53) are fixedly arranged with the lower support plate bracket (52), the guide rods (53) are slidably arranged with the upper support plate bracket (51), and a guide sleeve (54) is fixedly arranged on the upper support plate bracket (51) for guiding the guide rods (53); The pneumatic assembly (55) is arranged between the upper support plate bracket (51) and the lower support plate bracket (52), and the monitoring assembly (57) is arranged on the pneumatic assembly (55).

2. The self-regulating Ilizarov medical device according to claim 1, characterized in that: The pneumatic assembly (55) comprises: A pneumatic cylinder (551) is fixedly arranged below the lower support plate bracket (52), and a pneumatic valve (554) connected to an external air source is provided on the pneumatic cylinder (551); An adjusting rod (553) is slidably disposed in the pneumatic cylinder (551), and the adjusting rod (553) extends upward to the upper support plate bracket (51), and the adjusting rod (553) is fixedly connected to the upper support plate bracket (51); The sleeve (552) is mounted on the adjusting rod (553), and the lower end of the sleeve (552) is fixedly arranged on the pneumatic cylinder (551) and the lower support plate bracket (52) through a connecting rod.

3. The self-regulating Ilizarov medical device according to claim 2, characterized in that: The adjusting rod (553) is arranged to pass through the lower supporting plate bracket (52) and the hole (21), wherein the fixing ring (2) is clamped between the lower supporting plate bracket (52) and the pneumatic cylinder (551); In addition, the adjusting rod (553) is arranged to pass through the upper supporting plate bracket (51) and the hole (21), and the lower end surface of the upper supporting plate bracket (51) is directly fixed on the contacting fixing ring (2).

4. The self-regulating Ilizarov medical device according to claim 3, characterized in that: The monitoring component (57) comprises: A pad (571) is fixedly arranged on the upper end surface of the lower support plate bracket (52); The measuring meter (573) is fixedly arranged on the lower support plate bracket (52), and the spacer (571) is provided with a distance measuring tube (572) connecting the measuring meter (573) and the sleeve (552).

5. The automatically adjustable Ilizarov medical device according to claim 4, characterized in that: The main adjustment assembly (5) further comprises a pull rod (56), and the pull rod (56) is arranged below the upper support plate bracket (51).

6. The automatically adjustable Ilizarov medical device according to claim 5, characterized in that: The auxiliary adjustment component (6) comprises: The second transfer rod (61) passes through two adjacent fixing rings (2), and is located at the position of the fixing ring (2) where the upper support plate bracket (51) is located. A locking nut (62) and a fixing pin (4) are sleeved on the second transfer rod (61) to clamp and fix the fixing ring (2); An auxiliary sliding sleeve (63) is sleeved on the second transfer rod (61), a sliding sleeve rod (631) is provided at the lower end of the auxiliary sliding sleeve (63), and a grooved guide cylinder (64) is slidably provided in the auxiliary sliding sleeve (63), and the grooved guide cylinder (64) is fixedly sleeved on the second transfer rod (61); An adjusting sleeve (65) is slidably sleeved on the sleeve rod (631), and a pressure spring (66) is provided between the adjusting sleeve (65) and the auxiliary sleeve (63), and the pressure spring (66) is sleeved on the sleeve rod (631); The fixing seat (67) is fixedly arranged on the fixing ring (2) where the lower support plate bracket (52) is located, and the adjusting sleeve (65) is fixedly arranged on the fixing seat (67).

7. The automatically adjustable Ilizarov medical device according to claim 6, characterized in that: At the position of the fixing ring (2) where the lower support plate bracket (52) is located, the second transfer rod (61) passes through the auxiliary sliding sleeve (63), the sliding sleeve rod (631), the adjustment sleeve (65) and the fixing seat (67), passes through the fixing ring (2), and fixes the fixing ring (2) and the second transfer rod (61) through the fixing nail (4). The second transfer rod (61) can be pulled and adjusted.

8. The automatically adjustable Ilizarov medical device according to claim 7, characterized in that: The fixing nail (4) comprises a nail cap (41) and a fastening nail (43). The Kirschner wire (3) and the fixing ring (2) can be fixed together by means of a first transfer rod (42) and a locking nut (62). Similarly, the fixing nail (4) can fix the second transfer rod (61) and the fixing ring (2).

9. The automatically adjustable Ilizarov medical device according to claim 8, characterized in that: The grooved guide cylinder (64) is evenly provided with arc grooves (641) to control the second transfer rod (61) to slide in the auxiliary sliding sleeve (63).

10. The self-regulating Ilizarov medical device according to claim 9, characterized in that: During the pulling process of the second transfer rod (61), the grooved guide cylinder (64) can contact the sliding sleeve rod (631) to drive the auxiliary sliding sleeve (63) to squeeze the pressure spring (66).

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