A tibial transverse bone transport osteotomy device for treating diabetic foot

Abstract

The present invention relates to the field of medical device technology, in particular to a tibial transverse bone transport osteotomy for treating diabetic foot, comprising a first plate body, a second plate body, a connecting rod, a cutting drill bit and a fixing needle; the first plate body and the second plate body are respectively provided with two, the first plate body is provided with a connector, and the second plate body is provided with a socket, so that the two first plates and the two second plates form a rectangle; the first plate body and the second plate body are provided with an osteotomy hole, and the drill bit drills into the diabetic foot tibia of the patient through the osteotomy hole; the first plate body includes two sub-plate bodies, and the angle between the two sub-plate bodies can be adjusted by an angle adjustment mechanism; the two ends of the connecting rod are respectively connected to the two first plates, and are provided with a penetrating fixing hole, so that the fixing needle drills into the diabetic foot tibia of the patient through the fixing hole. The present invention can facilitate doctors to cut the diabetic foot tibia, and can reduce the damage to patients.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a tibial transverse bone transport osteotome for treating diabetic foot. Background Art

[0002] Diabetic foot is one of the most serious complications of diabetes patients, which is caused by neuropathy and peripheral vascular disease of varying degrees, leading to lower limb infection, ulceration and / or deep tissue damage. In the world, one leg is amputated every 30 seconds due to diabetic foot. According to statistics, nearly 120,000 people in Europe undergo amputation due to diabetic foot every year; 70% of amputations worldwide are performed on patients with diabetic foot.

[0003] Currently, diabetic foot can be treated by transverse tibial bone transfer. The treatment mechanism is that transverse tibial bone transfer can quickly form a new microvascular system in the lower limbs. The theoretical basis is the tensile stress law of Ilizarov's biological theory. The slow pulling of biological tissues to produce a certain tension can stimulate tissue regeneration and active blood vessel growth. The treatment plan is to regenerate a set of microvascular systems from the tibial bone marrow cavity by pulling the tibial bone block horizontally in the lower leg, and the terminal microvascular fusion can be restored, thereby restoring blood circulation in the lower limbs, so that tissue necrosis caused by vascular occlusion tends to be alleviated until it is cured.

[0004] When using transverse tibial bone transfer to treat diabetic foot, it is necessary to perform osteotomy on the tibia with a hand drill or bone cutter. The operation takes a long time and the cut pieces are prone to unevenness, which causes great damage to the bone, periosteum, and bone marrow. In addition, the traditional osteotomy method is prone to tibial fractures. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a tibial transverse bone transport osteotome for treating diabetic foot, which can facilitate doctors to cut the tibia of diabetic foot and reduce the damage to patients.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A tibial transverse bone transport osteotome for treating diabetic foot comprises a first plate body, a second plate body, a fixing screw, a connecting rod, a cutting drill bit, a fixing needle head and an angle adjustment mechanism;

[0008] The first plate body and the second plate body are respectively provided with two, and a plurality of connectors are respectively provided at both ends of the first plate body, and the plurality of connectors are respectively located at both sides of the end surface of the first plate body, and the connectors at both sides of the end surface of the first plate body are respectively arranged vertically, and one end is alternately fixedly connected to the first plate body, and a plurality of sockets matching with the connectors are respectively provided at both ends of the second plate body, and the connectors at both ends of the first plate body are embedded in the sockets of the second plate body, and the fixing screws are respectively passed through the connectors and the sockets, and are threadedly connected with the connectors and the sockets, so that the two first plate bodies and the two second plate bodies form a rectangular structure; the first plate body and the second plate body are respectively provided with a row of osteotomy holes penetrating therethrough along the length direction, and the drill bits are respectively drilled into the diabetic foot tibia of the patient through the osteotomy holes to intercept the cut part of the diabetic foot tibia;

[0009] A first adjustment groove and a second adjustment groove are provided at both ends of the connecting rod, the cross section of the first adjustment groove along the radial direction of the connecting rod is an arc-shaped structure, the first adjustment groove is arranged along the axial direction of the connecting rod, and one end of the first adjustment groove passes through the corresponding end face of the connecting rod; the second adjustment groove is arranged along the radial direction of the connecting rod, and one end of the second adjustment groove passes through the surface of the connecting rod, and the end of the first adjustment groove facing away from the corresponding end face of the connecting rod is conductively connected to the second adjustment groove;

[0010] Each of the first plates includes two sub-plates, and the bottoms of one end of the two sub-plates are hinged by hinges, and the angle adjustment mechanism includes a sliding rod, a locking rod and a locking nut, one end of the two sliding rods is fixedly connected to the two sub-plates respectively, and the other end is embedded in the first adjustment groove and slidably connected to the first adjustment groove, so that the two sub-plates can rotate along the first adjustment groove respectively; one end of the locking rod is embedded in the second adjustment groove and fixedly connected to the sliding rod, and the locking nut is threadedly connected to one end of the locking rod facing away from the sliding rod, and is fixedly abutted against the surface of the connecting rod, so that the sliding rod can be fixed at any position of the first adjustment groove;

[0011] The connecting rod is provided with at least two penetrating fixing holes, the two fixing holes are located between the two second adjustment grooves, and the fixing needle is drilled into the patient's diabetic foot tibia through the fixing holes to fix the first plate body and the second plate body on the diabetic foot tibia.

[0012] Furthermore, it also includes an expansion block, the expansion block is provided with a through osteotomy hole, one side of the expansion block is provided with a plurality of splicing pieces that match the socket, the plurality of splicing pieces are respectively located on both sides of the side of the expansion block, the splicing pieces on both sides of the side of the expansion block are respectively arranged vertically, and one end is alternately fixedly connected to the expansion block; the two sides of the expansion block facing away from the side of the splicing piece are respectively provided with splicing interfaces that match the splicing piece, the expansion blocks can be spliced ​​with each other through the splicing pieces and the splicing interfaces, the fixing screws are respectively inserted in the splicing pieces and the splicing interfaces, and are threadedly connected to the connector and the socket, so that two adjacent expansion blocks are fixedly connected;

[0013] The splicing piece can be inserted into the socket of the second plate, and the fixing screw is threadedly inserted into the splicing piece and the socket to extend the length of the second plate; the connecting rod is a telescopic structure to cooperate with the extension of the length of the second plate;

[0014] Both sides of each splicing piece in the vertical direction are provided with connection ports, the connection ports are recessed in the expansion block and fit with the connector, the connectors at both ends of the first plate body can be respectively embedded in the splicing ports and the connection ports, and the fixing screws are threadedly penetrated through the splicing piece and the splicing port and threadedly penetrated through the splicing piece and the connection ports to extend the length of the first plate body;

[0015] Furthermore, the connecting rod includes a first rod body, a second rod body and a locking screw, the first rod body is embedded in the second rod body and is slidably connected to the second rod body, one end of the locking screw is threaded through the second rod body and abuts against the first rod body, and the surface of the first rod body is provided with anti-slip teeth.

[0016] Furthermore, the first rod body is provided with a sliding groove, and the second rod body is provided with a sliding block slidably matched with the sliding groove.

[0017] Furthermore, an anti-skid washer is provided at one end of the locking nut facing the connecting rod, and the anti-skid washer is sleeved on the locking rod and fixedly connected to the locking nut.

[0018] Furthermore, fixing frames are provided on both sides of the connecting rod, one end of the fixing frame is fixedly connected to the connecting rod, and the other end of the fixing frame is fixedly connected to the second plate body.

[0019] Furthermore, the fixing hole is provided with a clamping mechanism, and the clamping mechanism includes a clamping piece and a clamping ring. There are a plurality of clamping pieces, and one end of the plurality of clamping pieces is circumferentially arranged around the fixing hole and fixedly connected to the connecting rod. The end of the clamping piece facing away from the connecting rod is provided with clamping teeth, and the clamping teeth face the axis of the fixing hole; the clamping ring is a tubular structure with two ends connected, and one point is a connecting port, and the other end is a clamping port, the connecting port is threadedly connected to the outer wall of the clamping piece, and the inner wall of the clamping port has an inclined surface, and the inclined surface is inclined toward the axis of the clamping ring along the direction from the connecting port to the clamping port, and the clamping port is pressed against the clamping teeth by screwing the clamping port into the clamping teeth, so that the clamping teeth clamp and fix the fixed needle.

[0020] Furthermore, the cutting drill bit is provided with a limiting mechanism, which includes a limiting ring, a limiting screw and a rotating part. The limiting ring is slidably mounted on the cutting drill bit and is provided with a threaded hole penetrating therethrough in the radial direction. The limiting screw is threadedly connected to the threaded hole and one end of the limiting screw can be pressed toward the cutting drill bit so that the limiting ring can be fixed on the cutting drill bit; the rotating part is located between the limiting ring and the tip of the cutting drill bit, and includes an inner ring and an outer ring, the inner ring is rotatably connected to the outer ring, the inner ring is rotatably mounted on the cutting drill bit, and one end face of the inner ring is fixedly connected to the end face of the limiting ring.

[0021] The beneficial effects of the present invention are:

[0022] 1. When the diabetic foot tibia needs to be cut, the two first plates and the two second plates after splicing are attached to the diabetic foot tibia, and the fixing needle is inserted into the patient's diabetic foot tibia through the fixing hole to fix the first plate and the second plate on the diabetic foot tibia. Since the two first plates and the two second plates form a rectangular structure and are provided with through osteotomy holes, the osteotomy holes on the two first plates and the two second plates are arranged in a rectangular structure, and the drill is drilled into the patient's diabetic foot tibia through the osteotomy holes respectively, so that the diabetic foot tibia to be cut is pierced around, so that the osteotomy can be completed by a stamp-like cutting method. The osteotomy speed is fast, the operation time is shortened, and complications are reduced. During osteotomy, the destruction of blood supply around the bone is reduced, which is conducive to the formation of bone callus, promotes bone healing and bone reconstruction. The cut bone blocks are uniform, the damage to the bone is small, and there is a continuous periosteum, which can reduce the damage to the bone marrow, prevent tibia fractures, facilitate lateral traction of the bone blocks, and ensure the success rate of the operation. Since the tibia has a certain curvature, in the present invention, the first plate body includes two sub-plate bodies hinged to each other. By adjusting the angle between the two sub-plate bodies, the first plate body can have a certain curvature, so that it can match the tibia, so that the first plate body and the second plate body can better fit the tibia, thereby improving the accuracy of the cut size; the first adjustment groove can cooperate with the sliding rod to slide, and the sliding rod is fixedly connected to the sub-plate body, and one end of the locking rod is embedded in the second adjustment groove and fixedly connected to the sliding rod. Under the action of the locking rod, the sub-plate body can fit on both sides of the connecting rod and realize a sliding connection with the connecting rod. By tightening the locking nut, the locking nut is pressed against the surface of the connecting rod, and the locking rod is fixed in the current position, thereby realizing the fixing of the angle between the two sub-plate bodies, and maintaining the angle of the two sub-plate bodies will not change during the osteotomy process.

[0023] 2. Since the physical conditions of different patients are different, the size of the tibia to be cut also needs to be determined according to the patient's condition. In the present invention, the splicing piece of the expansion block can be embedded in the connector of the second plate body, and the fixing screw is threaded through the splicing piece and the connector, so as to achieve the expansion of the length of the second plate body; the connectors at both ends of the first plate body can be respectively embedded in the splicing interface and the connecting port, and the fixing screw is threaded through the splicing piece and the splicing interface and the thread is threaded through the splicing piece and the connecting port, so as to achieve the expansion of the length of the first plate body; after the length of the first plate body and the length of the second plate body are expanded, the expansion blocks are spliced ​​with each other through the splicing piece and the splicing interface, so that the length of the first plate body and the length of the second plate body can be re-spliced ​​into a rectangular structure after the expansion, thereby achieving the adjustment of the length of the first plate body and the length of the second plate body according to the size of the tibia to be cut, so as to accurately cut the tibia of diabetic foot.

[0024] 3. According to the required depth of the tibia of diabetic foot, adjust the position of the limit ring on the cutting drill bit, screw the limit screw into the threaded hole of the limit ring, and fix the limit screw against the surface of the cutting drill bit, so that the limit ring can be fixed in the current position, and the rotating part is also fixed in the current position. After the cutting drill bit drills into the osteotomy hole, when the outer ring of the rotating part touches the osteotomy hole, it proves that the drilling has reached the required depth. Since the inner ring and the outer ring of the rotating part are rotatably connected, when the outer ring touches the osteotomy hole, the cutting drill bit will not be affected by the resistance of the osteotomy hole, preventing the rotating part from driving the first plate and the second plate to rotate when touching the cutting drill bit, and ensuring the safety of osteotomy while limiting the cutting depth. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0026] Figure 2 It is an expanded side view of the first plate of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0027] Figure 3 It is an expanded top view of the second plate of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0028] Figure 4 It is a schematic diagram of the expansion block structure of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0029] Figure 5 It is a schematic diagram of the sub-plate structure of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of the first adjustment groove of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0031] Figure 7 It is a schematic diagram of the angle adjustment mechanism structure of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0032] Figure 8 It is a schematic diagram of the first rod structure of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0033] Fig. 9 This is a schematic diagram of the clamping mechanism structure of a tibial transverse bone transport osteotomy device for treating diabetic foot according to a preferred embodiment of the present invention.

[0034] Fig.10 It is a schematic diagram of the cutting drill structure of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0035] Fig.11 This is a schematic diagram of the structure of a limiting mechanism of a tibial transverse bone transport osteotome for treating diabetic foot according to a preferred embodiment of the present invention.

[0036] In the figure, 11-first plate, 111-sub-plate, 112-hinge, 12-second plate, 13-osteotomy hole, 14-expansion block, 141-joining piece, 142-joining interface, 143-connecting port, 2-fixing screw, 3-connecting rod, 301-first rod, 302-second rod, 303-locking screw, 304-anti-slip tooth pattern, 305-slide groove, 306-slider, 31-first adjustment groove, 32-first Two adjusting slots, 33-fixed frame, 4-cutting drill bit, 41-fixed needle, 51-connector, 52-connector, 6-sliding rod, 61-locking rod, 62-locking nut, 621-anti-slip gasket, 7-fixing hole, 8-clamping mechanism, 81-clamping piece, 811-clamping teeth, 82-clamping ring, 9-limiting mechanism, 91-limiting ring, 92-limiting screw, 93-rotating part, 931-inner ring, 932-outer ring. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0040] Please also see Figures 1 to 11 A preferred embodiment of the present invention is a tibial transverse bone transport osteotome for treating diabetic foot, characterized in that it includes a first plate body 11, a second plate body 12, a fixing screw 2, a connecting rod 3, a cutting drill bit 4, a fixing needle 41 and an angle adjustment mechanism.

[0041] The first plate body 11 and the second plate body 12 are respectively provided with two, and a plurality of connectors 51 are respectively provided at both ends of the first plate body 11, and the plurality of connectors 51 are respectively located on both sides of the end surface of the first plate body 11, and the connectors 51 on both sides of the end surface of the first plate body 11 are respectively arranged vertically, and one end is alternately fixedly connected to the first plate body 11, and a plurality of sockets 52 matching with the connectors 51 are respectively provided at both ends of the second plate body 12, and the connectors 51 at both ends of the first plate body 11 are embedded in the sockets 52 of the second plate body 12, and the fixing screws 2 are respectively penetrated in the connectors 51 and the sockets 52, and are threadedly connected with the connectors 51 and the sockets 52, so that the two first plate bodies 11 and the two second plate bodies 12 form a rectangular structure.

[0042] The first plate 11 and the second plate 12 are both provided with a row of osteotomy holes 13 along the length direction, and the cutting drill bit 4 respectively drills into the diabetic foot tibia of the patient through the osteotomy holes 13 to cut the cut part of the diabetic foot tibia. In this embodiment, a medical gun-type electric drill is used to clamp and fix the cutting drill bit 4 so that the cutting drill bit 4 can drill into the diabetic foot tibia of the patient by rotating.

[0043] Since the two first plates 11 and the two second plates 12 form a rectangular structure and are provided with a through osteotomy hole 13, the osteotomy holes 13 on the two first plates 11 and the two second plates 12 are arranged in a rectangular structure, and the cutting drill 4 is drilled into the diabetic foot tibia of the patient through the osteotomy holes 13, so that the diabetic foot tibia to be cut is pierced around, so that the osteotomy can be completed in a similar stamp cutting manner, so that the osteotomy speed is fast, the operation time is shortened, and complications are reduced. In addition, the blood supply damage around the bone is reduced during osteotomy, which is conducive to the formation of callus, and promotes bone healing and bone reconstruction. The cut bone blocks are uniform, the damage to the bone is small, and there is a continuous periosteum, which can reduce the damage to the bone marrow, prevent tibia fractures, facilitate lateral traction of the bone blocks, and ensure the success rate of the operation.

[0044] A first adjustment groove 31 and a second adjustment groove 32 are provided at both ends of the connecting rod 3. The cross section of the first adjustment groove 31 along the radial direction of the connecting rod 3 is an arc-shaped structure. The first adjustment groove 31 is arranged along the axial direction of the connecting rod 3, and one end thereof penetrates the corresponding end face of the connecting rod 3. The second adjustment groove 32 is arranged along the radial direction of the connecting rod 3, and one end thereof penetrates the surface of the connecting rod 3. The end of the first adjustment groove 31 facing away from the corresponding end face of the connecting rod 3 is conductively connected to the second adjustment groove 32.

[0045] like Figures 5 to 7 As shown, each first plate body 11 includes two sub-plate bodies 111, and the bottom of one end of the two sub-plate bodies 111 is hinged by a hinge 112. The angle adjustment mechanism includes a sliding rod 6, a locking rod 61 and a locking nut 62. One end of the two sliding rods 6 is fixedly connected to the two sub-plate bodies 111 respectively, and the other end is embedded in the first adjustment groove 31 and slidably connected to the first adjustment groove 31, so that the two sub-plate bodies 111 can rotate along the first adjustment groove 31 respectively; one end of the locking rod 61 is embedded in the second adjustment groove 32 and fixedly connected to the sliding rod 6, and the locking nut 62 is threadedly connected to one end of the locking rod 61 facing away from the sliding rod 6, and is fixedly abutted against the surface of the connecting rod 3, so that the sliding rod 6 can be fixed at any position of the first adjustment groove 31.

[0046] Since the tibia has a certain curvature, in this embodiment, the first plate body 11 includes two sub-plate bodies 111 that are hinged to each other. By adjusting the angle between the two sub-plate bodies 111, the first plate body 11 can have a certain curvature so that it can fit the tibia, so that the first plate body 11 and the second plate body 12 can better fit the tibia, thereby improving the accuracy of the cut size.

[0047] Under the action of the second adjustment slot 32 and the locking rod 61, the sub-plate body 111 can fit on both sides of the connecting rod 3 and realize sliding connection with the connecting rod 3. After loosening the locking nut 62, the angle between the two sub-plate bodies 111 can be adjusted by pulling the locking rod 61, so that the first plate body 11 can better fit the tibia. By tightening the locking nut 62, the locking nut 62 is pressed against the surface of the connecting rod 3, and the locking rod 61 is fixed in the current position, thereby realizing the fixing of the angle between the two sub-plate bodies 11, ensuring that the angle of the two sub-plate bodies 111 will not change during the osteotomy process.

[0048] Preferably, an anti-skid pad 621 is provided at one end of the locking nut 62 facing the connecting rod 3, and the anti-skid pad 621 is sleeved on the locking rod 61 and fixedly connected to the locking nut 62. The anti-skid pad 621 can increase the friction between the locking nut 62 and the connecting rod 3, thereby improving the stability of the locking nut 62 locking the locking rod 61.

[0049] The connecting rod 3 is provided with at least two through-going fixing holes 7, the two fixing holes 7 are located between the two second adjustment grooves 32, and the fixing needle 41 is drilled into the diabetic foot tibia of the patient through the fixing hole 7 to fix the first plate 11 and the second plate 12 on the diabetic foot tibia. When the diabetic foot tibia needs to be cut, the two spliced ​​first plates 11 and the two second plates 12 are attached to the diabetic foot tibia, and the fixing needle 41 is driven into the diabetic foot tibia of the patient through the fixing hole 7 to fix the first plate 11 and the second plate 12 on the diabetic foot tibia. In this embodiment, the fixing needle 41 is a Kirschner wire.

[0050] like Fig. 9 In the embodiment shown, the fixing hole 7 is provided with a clamping mechanism 8 , and the clamping mechanism 8 includes a clamping member 81 and a clamping ring 82 .

[0051] There are a plurality of clamping members 81 , one end of which is circumferentially arranged around the fixing hole 7 and fixedly connected to the connecting rod 3 , and one end of the clamping member 81 facing away from the connecting rod 3 is provided with clamping teeth 811 , which face the axis of the fixing hole 7 .

[0052] The clamping ring 82 is a tubular structure with two ends connected, and one point is a connecting port and the other end is a clamping port. The connecting port is threadedly connected to the outer wall of the clamping piece 81, and the inner wall of the clamping port has an inclined surface, which is inclined toward the axis of the clamping ring 82 along the direction from the connecting port to the clamping port. By screwing the clamping port into the clamping tooth 811, the clamping port is pressed against the clamping tooth 811, so that the clamping tooth 811 clamps and fixes the needle 41.

[0053] By screwing the clamping ring 82 onto the clamping member 81, the clamping opening of the clamping ring 82 presses the clamping teeth 811 toward the outer wall of the fixed needle 41, so that the clamping teeth 811 clamp and fix the fixed needle 41, preventing the osteotome from deviating or detaching from the tibia when cutting the tibia, thereby ensuring the accuracy of cutting the tibia.

[0054] like Fig.10 and Fig.11 In the embodiment shown, the cutting drill bit 4 is provided with a limiting mechanism 9, which includes a limiting ring 91, a limiting screw 92 and a rotating member 93. The limiting ring 91 is slidably sleeved on the cutting drill bit 4 and is provided with a threaded hole 911 penetrating in the radial direction. The limiting screw 92 is threadedly connected to the threaded hole 911, and one end of the limiting screw 92 can be pressed toward the cutting drill bit 4, so that the limiting ring 91 can be fixed on the cutting drill bit 4; the rotating member 93 is located between the limiting ring 91 and the tip of the cutting drill bit 4, and includes an inner ring 931 and an outer ring 932, the inner ring 931 is rotatably connected to the outer ring 932, the inner ring 931 is rotatably sleeved on the cutting drill bit 4, and one end face of the inner ring 931 is fixedly connected to the end face of the limiting ring 91. In this embodiment, the rotating member 93 is a convex bearing structure.

[0055] According to the required interception depth of the tibia of diabetic foot, adjust the position of the limit ring 91 on the cutting drill bit, screw the limit screw 92 into the threaded hole 911 of the limit ring 91, and make the limit screw 92 abut and fix against the surface of the cutting drill bit 4, so that the limit ring 91 can be fixed at the current position, and the rotating part 93 is also fixed at the current position.

[0056] After the cutting drill bit 4 is drilled into the osteotomy hole 13, when the outer ring 931 of the rotating member 93 touches the osteotomy hole 13, it is proved that the drilling has reached the required depth. Since the inner ring 931 and the outer ring 932 of the rotating member 93 are rotatably connected, when the outer ring 932 touches the osteotomy hole 13, the cutting drill bit 4 will not be resisted by the osteotomy hole 13, preventing the rotating member 93 from driving the first plate 11 and the second plate 12 to rotate when touching the cutting drill bit 4, thereby injuring the patient's tibia. This embodiment can ensure the safety of osteotomy while limiting the cutting depth.

[0057] like Figure 4 The embodiment shown also includes an expansion block 14, which is provided with a through osteotomy hole 13, and one side of the expansion block 14 is provided with a plurality of splicing pieces 141 that fit with the connector 52, and the plurality of splicing pieces 141 are respectively located on both sides of the side of the expansion block 14, and the splicing pieces 141 on both sides of the side of the expansion block 14 are respectively arranged vertically, and one end is alternately fixedly connected with the expansion block 14. The expansion block 14 is provided with a splicing interface 142 that fits with the splicing piece 141 on both sides of the side facing away from the splicing piece 141, and the expansion blocks 14 can be spliced ​​with each other through the splicing piece 141 and the splicing interface 142, and the fixing screws 2 are respectively inserted in the splicing piece 141 and the splicing interface 142, and are threadedly connected with the connector 51 and the connector 52, so that two adjacent expansion blocks 14 are fixedly connected.

[0058] In the side surface of the expansion block 14 of the present embodiment, three splicing pieces 141 are provided on one side, and three connecting ports 143 are also provided, and two splicing pieces 141 are provided on the other side, and two connecting ports 143 are also provided; on both sides of the expansion block 14 facing away from the splicing pieces 141, three splicing ports 142 are provided on one side, and two splicing ports 142 are provided on the other side, wherein the number of relative splicing pieces 141 and splicing ports 142 is the same.

[0059] Among the connectors 51 on both sides of the end surface of the first plate body 11, there are three connectors 51 on one side and two connectors 51 on the other side; among the connectors 52 on both sides of the end surface of the second plate body 12, there are three connectors 52 on one side and two connectors 52 on the other side.

[0060] The splicing piece 141 can be embedded in the socket 52 of the second plate body 12, and the fixing screw 2 is threadedly penetrated through the splicing piece 141 and the socket 52 to extend the length of the second plate body 12; the connecting rod 3 is a telescopic structure to cooperate with the extension of the length of the second plate body 12.

[0061] Each splicing piece 141 is provided with connecting ports 143 on both sides in the vertical direction. The connecting ports 143 are recessed in the expansion block 14 and fit with the connector 51. The connectors 51 at both ends of the first plate body 11 can be respectively embedded in the splicing ports 142 and the connecting ports 143, and are threadedly penetrated through the splicing piece 141 and the splicing ports 142 and through the fixing screws 2 threadedly penetrated through the splicing piece 141 and the splicing ports 142 and threadedly penetrated through the splicing piece 141 and the connecting ports 143 to expand the length of the first plate body 11.

[0062] Since the physical conditions of different patients are different, the size of the tibia to be cut also needs to be determined according to the patient's condition.

[0063] In this embodiment, the splicing piece 141 of the expansion block 14 can be embedded in the connector of the second plate body 12, and the fixing screw 2 is threadedly penetrated in the splicing piece 141 and the connector 142, so as to achieve the expansion of the length of the second plate body 12. The connectors 51 at both ends of the first plate body 11 can be respectively embedded in the splicing interface 142 and the connection port 143, and the fixing screw 2 is threadedly penetrated in the connector 51 and the splicing interface 142 and threadedly penetrated in the connector 51 and the connection port 143, so as to achieve the expansion of the length of the first plate body 11 and the length of the second plate body 12. After the length of the first plate body 11 and the length of the second plate body 12 are expanded, the expansion blocks 14 are spliced ​​with each other through the splicing piece 141 and the splicing interface 142, so that the length of the first plate body 11 and the length of the second plate body 12 can be re-spliced ​​into a rectangular structure after the expansion, thereby achieving the adjustment of the length of the first plate body and the length of the second plate body according to the size of the tibia to be cut, so as to accurately cut the tibia of diabetic foot.

[0064] In this embodiment, the connecting rod 3 includes a first rod body 301, a second rod body 302 and a locking screw 303. The first rod body 301 is embedded in the second rod body 302 and is slidably connected with the second rod body 302. One end of the locking screw 303 is threadedly penetrated through the second rod body 302 and abuts against the first rod body 301. The surface of the first rod body 301 is provided with anti-slip teeth 304. Under the action of the locking screw 303, the first rod body 301 can be fixed in the second rod body 302, thereby improving the stability of the splicing of the first plate body 11 and the second plate body 12 and the stability of the splicing of the first plate body 11 and the second plate body 12 with the expansion block 14, and ensuring that the first plate body 11 and the second plate body 12 after splicing have a stable structure.

[0065] Preferably, the first rod 301 is provided with a slide groove 305, and the second rod 302 is provided with a slider 306 that slidably cooperates with the slide groove 305. Under the sliding cooperation between the slider 306 and the slide groove 305, it is ensured that the first rod 301 and the second rod 302 will not rotate, and the rotation of the first rod 301 and the second rod 302 is avoided to damage the splicing structure of the first plate 11, the second plate 12 and the expansion block 14.

[0066] In this embodiment, fixing brackets 33 are provided on both sides of the connecting rod 3, one end of the fixing bracket 33 is fixedly connected to the connecting rod 3, and the other end is fixedly connected to the second plate 12. The fixing bracket 33 improves the stability of the connection between the second plate 12 and the connecting rod 3.

[0067] When treating diabetic foot, the tibia of the diabetic foot is photographed by CT to obtain a structural image of the tibia of the diabetic foot. According to the curvature of the tibia of the diabetic foot, the angle between the two sub-plates 111 is adjusted by turning the locking rod 61, so that the first plate 11 fits better with the tibia. Then tighten the locking nut 62 so that the locking nut 62 is pressed against the surface of the connecting rod 3, and the locking rod 61 is fixed at the current position, and the angle between the two sub-plates 11 is fixed at the current position, ensuring that the angle of the two sub-plates 111 will not change during the osteotomy process.

[0068] According to the required size of the osteotomy, the splicing piece 141 of the expansion block 14 is embedded in the connector of the second plate 12, and the fixing screw 2 is threadedly penetrated through the splicing piece 141 and the connector 142 to expand the length of the second plate 12. The splicing port 142 and the connecting port 143 of the expansion block 14 are embedded in the connector 51 at both ends of the first plate 11, and the fixing screw 2 is threadedly penetrated through the connector 51 and the splicing port 142 and the connector 51 and the connecting port 143 to expand the length of the first plate 11. After the length of the first plate 11 and the length of the second plate 12 are expanded, the expansion blocks 14 are spliced ​​with each other through the splicing piece 141 and the splicing port 142, so that the length of the first plate 11 and the length of the second plate 12 can be re-spliced ​​into a rectangular structure after the length is expanded.

[0069] The osteotome with the angle adjusted is placed close to the tibia of the diabetic foot that needs osteotomy, and the fixing needle 41 is driven into the patient's diabetic foot tibia through the fixing hole 7 to fix the first plate 11 and the second plate 12 on the diabetic foot tibia. Then the clamping ring 82 is screwed into the clamping member 81, so that the clamping opening of the clamping ring 82 presses the clamping teeth 811 against the outer wall of the fixing needle 41, so that the clamping teeth 811 clamp and fix the fixing needle 41, so that the osteotome is fixed on the diabetic foot tibia that needs osteotomy.

[0070] The distance from the limiter 9 to the tip of the cutting drill bit 4 minus the thickness of the osteotomy is equal to the cutting depth. According to the depth of the diabetic foot tibia required to be cut, after adjusting the limiter ring 91 to a suitable position, screw the limiter screw 92 into the threaded hole 911 of the limiter ring 91, and fix the limiter screw 92 against the surface of the cutting drill bit 4, so that the limiter ring 91 can be fixed at the current position, and the rotating member 93 is also fixed at the current position. The cutting drill bit 4 is clamped and fixed by the medical electric drill, and the medical electric drill is turned on, and the cutting drill bit 4 is drilled into the patient's diabetic foot tibia through the osteotomy hole 13, so that the diabetic foot tibia required to be cut is pierced around, so that the osteotomy can be completed in a similar stamp cutting manner.

Claims

1. A tibial transverse bone transport osteotome for treating diabetic foot, characterized in that: It comprises a first plate body (11), a second plate body (12), a fixing screw (2), a connecting rod (3), a cutting drill bit (4), a fixing needle head (41) and an angle adjustment mechanism; The first plate body (11) and the second plate body (12) are each provided with two, and a plurality of connectors (51) are respectively provided at both ends of the first plate body (11), and the plurality of connectors (51) are respectively located on both sides of the end surface of the first plate body (11), and the connectors (51) on both sides of the end surface of the first plate body (11) are respectively arranged vertically, and one end is alternately fixedly connected to the first plate body (11), and a plurality of connector ports (52) matching with the connectors (51) are respectively provided at both ends of the second plate body (12), and the connectors (51) at both ends of the first plate body (11) are embedded in the connectors (52) of the second plate body (12). The fixing screws (2) are respectively inserted into the connector (51) and the connector (52) and are threadedly connected to the connector (51) and the connector (52), so that the two first plates (11) and the two second plates (12) form a rectangular structure; the first plate (11) and the second plate (12) are each provided with a row of osteotomy holes (13) passing through the osteotomy holes (13) along the length direction, and the cutting drill bit (4) is respectively drilled into the diabetic foot tibia of the patient through the osteotomy holes (13) to cut the cut part of the diabetic foot tibia; A first adjustment groove (31) and a second adjustment groove (32) are provided at both ends of the connecting rod (3); the cross section of the first adjustment groove (31) along the radial direction of the connecting rod (3) is an arc-shaped structure; the first adjustment groove (31) is arranged along the axial direction of the connecting rod (3), and one end thereof penetrates through the corresponding end face of the connecting rod (3); the second adjustment groove (32) is arranged along the radial direction of the connecting rod (3), and one end thereof penetrates through the surface of the connecting rod (3); the end of the first adjustment groove (31) facing away from the corresponding end face of the connecting rod (3) is conductively connected to the second adjustment groove (32); Each of the first plate bodies (11) comprises two sub-plate bodies (111), and the bottoms of one end of the two sub-plate bodies (111) are hinged by a hinge (112); the angle adjustment mechanism comprises a sliding rod (6), a locking rod (61) and a locking nut (62); one end of the two sliding rods (6) is fixedly connected to the two sub-plate bodies (111) respectively, and the other end is embedded in the first adjustment groove (31) and slidably connected to the first adjustment groove (31), so that the two sub-plate bodies (111) can rotate along the first adjustment groove (31) respectively; one end of the locking rod (61) is embedded in the second adjustment groove (32) and fixedly connected to the sliding rod (6); the locking nut (62) is threadedly connected to one end of the locking rod (61) facing away from the sliding rod (6), and is fixedly abutted against the surface of the connecting rod (3), so that the sliding rod (6) can be fixed at any position of the first adjustment groove (31); The connecting rod (3) is provided with at least two penetrating fixing holes (7), the two fixing holes (7) are located between the two second adjustment grooves (32), and the fixing needle (41) is drilled into the diabetic foot tibia of the patient through the fixing holes (7) to fix the first plate body (11) and the second plate body (12) on the diabetic foot tibia; An anti-skid washer (621) is provided at one end of the locking nut (62) facing the connecting rod (3); the anti-skid washer (621) is sleeved on the locking rod (61) and is fixedly connected to the locking nut (62); Fixed frames (33) are provided on both sides of the connecting rod (3); one end of the fixed frame (33) is fixedly connected to the connecting rod (3), and the other end is fixedly connected to the second plate body (12).

2. A tibial transverse bone transport osteotomy device for treating diabetic foot according to claim 1, characterized in that: The invention also comprises an expansion block (14), wherein the expansion block (14) is provided with a through osteotomy hole (13), and a plurality of splicing pieces (141) which are matched with the socket (52) are provided on one side of the expansion block (14), and the plurality of splicing pieces (141) are respectively located on both sides of the side of the expansion block (14), and the splicing pieces (141) on both sides of the side of the expansion block (14) are respectively arranged vertically, and one end of the splicing pieces (141) is alternately fixedly connected to the expansion block (14); the expansion block (14) is facing away from the expansion block (14); Both sides of the side of the splicing piece (141) are respectively provided with splicing interfaces (142) that match the splicing piece (141), and the expansion blocks (14) can be spliced ​​with each other through the splicing piece (141) and the splicing interfaces (142), and the fixing screws (2) are respectively inserted into the splicing piece (141) and the splicing interfaces (142), and are threadedly connected with the connector (51) and the socket (52), so that two adjacent expansion blocks (14) are fixedly connected; The splicing piece (141) can be embedded in the socket (52) of the second plate body (12), and the fixing screw (2) is threadedly inserted into the splicing piece (141) and the socket (52) to extend the length of the second plate body (12); the connecting rod (3) is a telescopic structure to cooperate with the extension of the length of the second plate body (12); Each of the splicing pieces (141) is provided with connecting ports (143) on both sides in the vertical direction. The connecting ports (143) are recessed in the expansion block (14) and fit with the connector (51). The connectors (51) at both ends of the first plate body (11) can be respectively embedded in the splicing ports (142) and the connecting ports (143), and the fixing screws (2) are threadedly penetrated through the splicing piece (141) and the splicing port (142) and threadedly penetrated through the splicing piece (141) and the connecting ports (143) to extend the length of the first plate body (11).

3. The tibial transverse bone transport osteotomy device for treating diabetic foot according to claim 2, characterized in that: The connecting rod (3) comprises a first rod body (301), a second rod body (302) and a locking screw (303); the first rod body (301) is embedded in the second rod body (302) and is slidably connected to the second rod body (302); one end of the locking screw (303) is threadedly inserted into the second rod body (302) and abuts against the first rod body (301); and the surface of the first rod body (301) is provided with anti-slip tooth patterns (304).

4. The tibial transverse bone transport osteotomy device for treating diabetic foot according to claim 3, characterized in that: The first rod body (301) is provided with a sliding groove (305), and the second rod body (302) is provided with a sliding block (306) that slidably cooperates with the sliding groove (305).

5. The tibial transverse bone transport osteotomy device for treating diabetic foot according to claim 1, characterized in that: The fixing hole (7) is provided with a clamping mechanism (8), and the clamping mechanism (8) includes a clamping member (81) and a clamping ring (82). The clamping members (81) are provided in plurality, and one end of the clamping members (81) is arranged around the fixing hole (7) and fixedly connected to the connecting rod (3). The end of the clamping member (81) facing away from the connecting rod (3) is provided with clamping teeth (811), and the clamping teeth (811) face the axis of the fixing hole (7); the clamping ring (82) is a tubular structure with two ends connected, and one point is a connecting port and the other end is a clamping port. The connecting port is threadedly connected to the outer wall of the clamping member (81). The inner wall of the clamping port has an inclined surface, and the inclined surface is inclined toward the axis of the clamping ring (82) along the direction from the connecting port to the clamping port. By screwing the clamping port into the clamping teeth (811), the clamping port is pressed against the clamping teeth (811) so that the clamping teeth (811) clamp and fix the fixed needle (41).

6. The tibial transverse bone transport osteotome for treating diabetic foot according to claim 1, characterized in that: The cutting drill bit (4) is provided with a limiting mechanism (9), the limiting mechanism (9) comprising a limiting ring (91), a limiting screw (92) and a rotating member (93); the limiting ring (91) is slidably mounted on the cutting drill bit (4) and is provided with a threaded hole (911) penetrating in the radial direction; the limiting screw (92) is threadedly connected to the threaded hole (911) and one end of the limiting screw (92) can be pressed toward the cutting drill bit (4) so ​​that the limiting ring (91) can be fixed on the cutting drill bit (4); the rotating member (93) is located between the limiting ring (91) and the tip of the cutting drill bit (4) and comprises an inner ring (931) and an outer ring (932); the inner ring (931) is rotatably connected to the outer ring (932); the inner ring (931) is rotatably mounted on the cutting drill bit (4); one end face of the inner ring (931) is fixedly connected to the end face of the limiting ring (91).

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