Skin soft tissue bone transfer device with external fixator

Abstract

The present invention discloses a bone transport device for skin and soft tissues matched with an external fixator, which is characterized by comprising: an external fixation ring frame, an external fixation bolt, a nut, a bolt, a first bracket, a support plate, a second bracket, a support block, a rotating shaft, and an internal fixation steel plate; the present invention can slowly pull the cut free bone segment during the bone transport operation, and at the same time, the device causes less trauma to the patient's skin and soft tissues, and can be transported at a fixed distance, thus completely solving the problem of skin and soft tissue cutting.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and in particular relates to a bone transport device within skin and soft tissue matched with an external fixator. Background Art

[0002] Bone transfer is a method of cutting the bone at the proximal or distal end of the bone defect by applying certain techniques, and gradually moving the cut free bone segment to the bone defect with a special external fixator. New bone tissue will form on the traces left by the cut free bone segment until the bone defect is repaired. It is the standard treatment method for treating large bone defects at this stage. In previous treatments, an external fixation ring frame was used to fix the free bone segment for bone transfer. This method caused great trauma to the tissue at the patient's bone transfer site. It was inevitable that the tissue would be cut by the external fixation needle during the transfer process. In addition, simple external fixation ring frame fixation would not be effective until the bone transfer was completed. After the transfer, the patient needs to wear an external fixation ring frame for a longer time to wait for the new bone to mineralize. In recent years, some scholars have proposed a combination of internal and external fixation. After the external fixation is completed, internal fixation is used to allow it to mineralize naturally, reducing the wearing time of external fixation and achieving certain results. However, the problem of skin and soft tissue trauma caused by external fixation traction has not been solved. Therefore, a skin and soft tissue internal bone transfer device equipped with an external fixator can slowly pull the severed free bone segment during the bone transfer operation. At the same time, the device causes less trauma to the patient's skin and soft tissue, and can be transferred at a fixed distance, completely solving the problem of skin and soft tissue cutting. Summary of the invention

[0003] The present invention provides a bone transport device in skin and soft tissues that is matched with an external fixator. The device can slowly pull the cut free bone segment during bone transport surgery. Meanwhile, the device causes less trauma to the patient's skin and soft tissues and can be transported at a fixed distance, thus completely solving the problem of skin and soft tissue cutting.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is a skin soft tissue bone transport device matched with an external fixator, including an external fixation ring frame, an external fixation bolt, a nut, a bolt, a first bracket, a support plate, a second bracket, a support block, a rotating shaft, and an internal fixation steel plate; the external fixation ring frame includes a fixed threaded sleeve, a first circular hole, and a second circular hole; the rotating shaft includes a round rod, a gear, a ratchet, and a prism; the internal fixation steel plate includes a steel plate head, a steel plate body, a steel plate tail, a first fixed threaded hole, a Kirschner wire hole, a track, and a slider; the slider includes a second fixed threaded hole and a tooth pattern;

[0005] The external fixing ring frame is fixed to the top of the upper bone of the patient's bone defect by four external fixing bolts; the internal fixing steel plate is implanted in the patient's skin tissue and connected to the bone at the bone defect; the upper end of the first bracket is fixed to the external fixing ring frame by bolts and nuts, the lower end of the first bracket is connected to the support block, the bolts connect the support block and connect the upper end of the second bracket to the lower end of the first bracket, and the second bracket can slide on the first bracket; the lower end of the second bracket is connected to the support block, the rotating shaft passes through the support block, the ratchet part remains in the support block, the gear section penetrates into the patient's subcutaneous tissue, and the gear contacts the slider of the internal fixing steel plate;

[0006] Furthermore, a plurality of first circular holes are evenly distributed on the external fixed circular frame, a second circular hole is provided between the first circular holes, two fixed threaded sleeves are symmetrically connected on the left and right axes of the upper side of the external fixed circular frame, and two fixed threaded sleeves are symmetrically connected on the front and rear axes of the lower side of the external fixed circular frame;

[0007] Furthermore, the first bracket, the second bracket, and the support block are connected to form an external fixed bracket, the upper end of the first bracket forms an angle of 90° with the middle part, a circular hole is provided at the upper end, a slideway is formed by cutting at the axis from the middle part to the lower end, and the two ends of the rear side of the lower end are connected to the two sides of the support plate, and a threaded hole is provided in the middle of the support plate; the second bracket is narrower from the upper end to the middle part, and the width is consistent with the width of the slideway cut by the first bracket, a slideway is cut on the axis from the upper end to the middle part of the second bracket, the lower end of the second bracket is connected to the support block, and the bolt passes through the slideway of the second bracket to connect the support plate to fix the second bracket on the first bracket, and the second bracket can slide in the slideway of the first bracket;

[0008] Furthermore, a ratchet is provided inside the support block, the rotating shaft passes through the support block, the ratchet part remains inside the support block, and the ratchet contacts the ratchet of the rotating shaft;

[0009] Furthermore, the left end of the round rod of the rotating shaft is connected to a gear, the right end is connected to a ratchet, and the right end is connected to a prism;

[0010] Furthermore, the head and tail of the internal fixing steel plate are provided with four first fixing threaded holes on the upper and lower axes, and Kirschner wire holes are provided at the end edges of the head and tail of the steel plate. A track is provided on the steel plate body, and a slider is provided in the track, and the slider can slide in the track;

[0011] Furthermore, four second fixing threaded holes are penetrated on the upper and lower axes of the slider, and a tooth pattern is provided on the back side of the slider. The width of the slider is consistent with the width of the internal fixing steel plate track.

[0012] Another object of the present invention is to provide a principle and method of using a bone transport device in skin and soft tissue in combination with an external fixator:

[0013] The principle of bone transfer surgery is to cut off the bone at the upper end of the bone defect, and slowly move the cut free bone segment to the distal end through a special external fixator. New bone tissue will form on the traces left by the cut free bone segment, and the bone transfer process is completed when the free bone segment and the distal bone meet. After the bone transfer process is completed, the free bone segment and the new bone tissue are fixed. After the new bone tissue is mineralized and the free bone segment and the distal bone meet and heal, the repair of the bone defect is completed.

[0014] The bone transfer device in skin soft tissue matched with an external fixator comprises the following steps: firstly, an external fixation bolt is passed through a fixed threaded sleeve on an external fixation ring frame and implanted into the patient's bone, and the external fixation ring frame is fixed to the upper bone of the bone defect; secondly, an internal fixation steel plate is implanted into the patient's subcutaneous tissue and connected to the bone of the bone defect, the head of the steel plate is connected to the upper bone of the bone defect, the tail of the steel plate is connected to the lower bone of the bone defect, and a slider is connected to the cut free bone segment; then, a first bracket is connected to the external fixation ring frame with bolts and nuts, and a second bracket is adjusted to connect to the first bracket The connection length is set so that the gear steel just touches the tooth pattern of the slider when the rotating shaft is implanted into the patient's subcutaneous tissue; then, a rotating handle is connected to the prism of the rotating shaft. The doctor uses the rotating handle to drive the rotating shaft to rotate, thereby driving the gear to rotate and drive the slider to move. The movement of the slider drives the cut free bone segment to move. The ratchet makes a sound every time it jumps, which makes it convenient for the doctor to control the movement distance of the slider; finally, after the bone transfer process is completed, the new bone and the free bone segment are fixed, and the external fixator is removed, waiting for the new bone to mineralize and the free bone segment to heal at the meeting point with the distal bone.

[0015] Beneficial effects of the present invention:

[0016] 1. The skin soft tissue bone transfer device with an external fixator can slowly pull the cut free bone segment during the bone transfer operation, so that new bone grows out of the cut bone, and the free bone segment gradually merges with the proximal bone or the distal bone, and the merged end gradually heals;

[0017] 2. This bone transfer device in skin and soft tissue combined with an external fixator has less trauma to the patient's skin and subcutaneous tissue during the operation. The rotation axis does not move during bone transfer, and will not cut the patient's skin and subcutaneous tissue;

[0018] 3. This bone transport device within the skin and soft tissue, which is matched with an external fixator, can be moved at a fixed distance and is easy to operate. Every time the gear rotates one circle, the slider moves 4 mm, thereby driving the cut free bone segment to move 4 mm. The ratchet is equipped with 16 ratchets. When the ratchet and the pawl rotate and contact, a sound is made to give feedback to the operator, so that the operator can clearly know the moving distance of the slider, thereby facilitating the operator to control the bone transport distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 The schematic diagram is a structural diagram of a skin soft tissue intra-bone transport device in combination with an external fixator;

[0021] Figure 2 A structural diagram of an external fixation ring frame of a skin soft tissue intra-bone transport device matched with an external fixator;

[0022] Figure 3 The structure diagram of an external fixator is a skin soft tissue bone transport device that is matched with an external fixator;

[0023] Figure 4 A diagram of the rotation axis structure of a skin soft tissue intra-bone transport device matched with an external fixator;

[0024] Figure 5 It is a structural diagram of an internal fixation steel plate of a skin soft tissue bone transport device used with an external fixator;

[0025] Figure 6 The present invention is a structural diagram of a slider of a skin soft tissue intra-bone transport device matched with an external fixator;

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1-external fixed ring frame, 101-fixed threaded sleeve, 102-first circular hole, 103-second circular hole, 2-external fixing bolt, 3-nut, 4-bolt, 5-first bracket, 6-support plate, 7-second bracket, 8-support block, 9-rotating shaft, 901-round rod, 902-gear, 903-ratchet, 904-prism, 10-internal fixed steel plate, 1001-steel plate head, 1002-steel plate body, 1003-steel plate tail, 1004-first fixed threaded hole, 1005-Kirschner wire hole, 1006-track, 1007-slider, 1007a-second fixed threaded hole, 1007b-tooth pattern. DETAILED DESCRIPTION

[0028] 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. Example

[0029] See also Figures 1 to 6 As shown, a structure of a bone transport device for skin soft tissue with an external fixator is characterized in that it includes: an external fixation ring frame 1, an external fixation bolt 2, a nut 3, a bolt 4, a first bracket 5, a support plate 6, a second bracket 7, a support block 8, a rotating shaft 9, and an internal fixation steel plate 10; the external fixation ring frame 1 includes a fixed threaded sleeve 101, a first circular hole 102, and a second circular hole 103; the rotating shaft 9 includes a round rod 901, a gear 902, a ratchet 903, and a prism 904; the internal fixation steel plate 10 includes a steel plate head 1001, a steel plate body 1002, a steel plate tail 1003, a first fixed threaded hole 1004, a Kirschner wire hole 1005, a track 1006, and a slider 1007; the slider 1007 includes a second fixed threaded hole 1007a and a tooth pattern 1007b;

[0030] The external fixing ring frame 1 is fixed to the top of the upper bone of the patient's bone defect by four external fixing bolts 2; the internal fixing steel plate 10 is implanted in the patient's skin tissue and connected to the bone at the bone defect; the upper end of the first bracket 5 is fixed to the external fixing ring frame 1 by bolts 4 and nuts 3, the two sides of the rear side of the lower end of the first bracket 5 are connected to the two sides of the support plate 6, the bolts 4 connect the support plate 6 and connect the upper end of the second bracket 7 to the lower end of the first bracket 5, and the second bracket 7 can slide on the first bracket 5; the lower end of the second bracket 7 is connected to the support block 8, the rotating shaft 9 passes through the support block 8, the ratchet 903 part remains in the support block 8, the gear 902 end penetrates into the patient's subcutaneous tissue, and the gear 902 contacts the slider 1007 of the internal fixing steel plate 10;

[0031] The external fixing ring frame 1 is evenly distributed with a plurality of first circular holes 102, and a second circular hole 103 is arranged between the first circular holes 102. Two fixing threaded sleeves 101 are symmetrically connected on the left and right axes of the upper side of the external fixing ring frame 1, and two fixing threaded sleeves 101 are symmetrically connected on the front and back axes of the lower side of the external fixing ring frame 1; the fixing threaded sleeves 101 are used to connect the external fixing bolts 2 implanted in the bone, so that the external fixing ring frame 1 is fixed to the bone at the upper end of the bone defect of the patient; the first circular hole 102 and the second circular hole 103 are used to connect the external fixing bracket or other brackets;

[0032] The first bracket 5, the second bracket 7, and the support block 8 are connected to form an external fixed bracket. The upper end of the first bracket 5 forms an angle of 90° with the middle part, and a circular hole is provided at the upper end. A slideway is formed by cutting from the middle to the lower end axis, and the two sides of the rear side of the lower end are connected with the two sides of the support plate 6. A threaded hole is provided in the middle of the support plate 6 for passing the bolt 4 to connect the first bracket 5 to the external fixed circular ring frame 1; the second bracket 7 is narrower from the upper end to the middle, and the width is consistent with the width of the slideway cut by the first bracket 5. A slideway is cut on the axis from the upper end to the middle of the second bracket 7, and the lower end of the second bracket 7 is connected to the support block 8. The middle to the upper end of the second bracket 7 is stuck in the slideway of the first bracket 5, and the bolt 4 passes through the slideway of the second bracket 7 to connect the support plate 6 to fix the second bracket 7 on the first bracket 5, and the second bracket 7 can slide in the slideway of the first bracket 5; the external fixed bracket is convenient for adjusting the height of the rotating axis, so as to meet different degrees of bone movement;

[0033] A ratchet is provided inside the support block 8, the rotating shaft 9 passes through the support block 8, the ratchet 903 is partially left inside the support block, the ratchet contacts the ratchet 903 of the rotating shaft 9, and the ratchet allows the rotating shaft 9 to rotate in only one direction, so that the slider 1007 can only move in one direction when the bone is moved, and each time the ratchet jumps, a sound is made, which gives feedback to the doctor, so that the doctor can control the moving distance conveniently;

[0034] The left end of the round rod 901 of the rotating shaft 9 is connected to the gear 902, the right end is connected to the ratchet 903, and the right end is connected to the prism 904; the teeth of the gear 902 are stuck on the teeth of the slider 1007, and the gear 902 drives the slider 1007 to move 4mm every time it rotates one circle; the ratchet 903 can limit the rotating shaft 9 so that the rotating shaft 9 can only rotate in one direction. At the same time, the ratchet 903 has 16 ratchet teeth, and the prism 904 is used to connect the rotating handle to apply force to the rotating shaft 9;

[0035] The head 1001 and the tail 1003 of the internal fixation steel plate 10 are both provided with four first fixing threaded holes 1004 on the upper and lower axes, and Kirschner wire holes 1005 are provided at the end edges of the head 1001 and the tail 1003 of the steel plate. A track 1006 is provided on the steel plate body 1002, and a slider 1007 is provided in the track 1006. The slider 1007 can slide in the track 1006; the first fixing threaded holes 1004 are used to connect fixing screws to implant the internal fixation steel plate into the subcutaneous tissue of the patient and connect it to the bone at the bone defect; the Kirschner wire holes 1005 are used for positioning the internal fixation steel plate 10 with the Kirschner wire when the internal fixation steel plate is implanted;

[0036] Four second fixing threaded holes 1007a are penetrated on the upper and lower axes of the slider 1007, and a tooth pattern 1007b is provided on the back side of the slider 1007. The width of the slider 1007 is consistent with the width of the track 1006 of the internal fixation steel plate 10; the second fixing threaded hole 1007a is used to implant a fixing screw to connect with the cut free bone segment, and the tooth pattern 1007b is used to clamp the gear 902, so that the slider 1007 is driven to move when the gear 902 rotates.

[0037] Specific operation mode and implementation principle:

[0038] The principle of bone transfer surgery is to cut off the bone at the upper end of the bone defect, and slowly move the cut free bone segment to the distal end through a special external fixator. New bone tissue will form on the traces left by the cut free bone segment, and the bone transfer process is completed when the free bone segment and the distal bone meet. After the bone transfer process is completed, the free bone segment and the new bone tissue are fixed. After the new bone tissue is mineralized and the free bone segment and the distal bone meet and heal, the repair of the bone defect is completed.

[0039] The bone transport device for skin soft tissue matched with an external fixator comprises the following steps: first, an external fixing bolt 2 is passed through a fixing threaded sleeve 101 on an external fixing ring frame 1 and implanted into the patient's bone, and the external fixing ring frame 1 is fixed to the upper bone of the bone defect; secondly, an internal fixing steel plate 10 is implanted into the patient's subcutaneous tissue and connected to the bone of the bone defect, the head 1001 of the steel plate is connected to the upper bone of the bone defect, the tail 1003 of the steel plate is connected to the lower bone of the bone defect, and the slider 1007 is connected to the truncated free bone segment; then, a first support 5 is connected to the external fixing ring frame 1 with a bolt 4 and a nut 3, and the connection between the second support 7 and the first support 5 is adjusted. The length of the connection is adjusted so that the gear 902 just contacts the tooth pattern 1007b of the slider 1007 when the rotating shaft 9 is implanted in the patient's subcutaneous tissue; then, a rotating handle is connected to the prism 904 of the rotating shaft 9, and the doctor uses the rotating handle to drive the rotating shaft 9 to rotate, thereby driving the gear 902 to rotate and driving the slider 1007 to move. The movement of the slider 1007 drives the truncated free bone segment to move, and the ratchet makes a sound every time it jumps, which makes it convenient for the doctor to control the moving distance of the slider; finally, after the bone transfer process is completed, the new bone and the free bone segment are fixed, and the external fixator is removed, waiting for the new bone to mineralize and the free bone segment to heal at the junction with the distal bone.

[0040] In summary, 1. The skin soft tissue bone transport device with an external fixator can slowly pull the cut free bone segment during the bone transport surgery, so that new bone grows out of the cut bone, and the free bone segment gradually meets the proximal bone or the distal bone, and the meeting end gradually heals;

[0041] 2. This bone transfer device in skin and soft tissue combined with an external fixator has less trauma to the patient's skin and subcutaneous tissue during the operation. The rotation axis does not move during bone transfer, and will not cut the patient's skin and subcutaneous tissue;

[0042] 3. This bone transport device within the skin and soft tissue, which is matched with an external fixator, can be moved at a fixed distance and is easy to operate. Every time the gear rotates one circle, the slider moves 4 mm, thereby driving the cut free bone segment to move 4 mm. The ratchet is equipped with 16 ratchets. When the ratchet and the pawl rotate and contact, a sound is made to give feedback to the operator, so that the operator can clearly know the moving distance of the slider, thereby facilitating the operator to control the bone transport distance.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A bone transfer device for skin soft tissue combined with an external fixator, characterized in that: include: An external fixed ring frame, an external fixed bolt, a nut, a bolt, a first bracket, a support plate, a second bracket, a support block, a rotating shaft, and an internal fixed steel plate; the external fixed ring frame includes a fixed threaded sleeve, a first circular hole, and a second circular hole; the rotating shaft includes a round rod, a gear, a ratchet, and a prism; the internal fixed steel plate includes a steel plate head, a steel plate body, a steel plate tail, a first fixed threaded hole, a Kirschner wire hole, a track, and a slider; the slider includes a second fixed threaded hole and a tooth pattern; The external fixing ring frame is fixed to the top of the upper bone of the patient's bone defect by four external fixing bolts; the internal fixing steel plate is implanted in the patient's skin tissue and connected to the bone at the bone defect; the upper end of the first bracket is fixed to the external fixing ring frame by bolts and nuts, the lower end of the first bracket is connected to the support block, the bolts connect the support block and connect the upper end of the second bracket to the lower end of the first bracket, and the second bracket can slide on the first bracket; the lower end of the second bracket is connected to the support block, the rotating shaft passes through the support block, the ratchet part remains in the support block, the gear section penetrates into the patient's subcutaneous tissue, and the gear contacts the slider of the internal fixing steel plate; The first bracket, the second bracket, and the support block are connected to form an external fixed bracket. The upper end of the first bracket forms an angle of 90° with the middle part, and a circular hole is provided at the upper end. A slideway is formed by cutting from the middle part to the axis of the lower end. The two ends of the rear side of the lower end are connected to the two sides of the support plate, and a threaded hole is provided in the middle of the support plate; the second bracket is narrower from the upper end to the middle, and the width is consistent with the width of the slideway cut from the first bracket. A slideway is cut from the upper end to the middle axis of the second bracket, and the lower end of the second bracket is connected to the support block. Bolts pass through the slideway of the second bracket to connect the support plate to fix the second bracket on the first bracket, and the second bracket can slide in the slideway of the first bracket. A ratchet is provided inside the support block, the rotating shaft passes through the support block, the ratchet part remains inside the support block, and the ratchet contacts the ratchet of the rotating shaft; The round rod of the rotating shaft is connected to a gear at the left end, a ratchet wheel near the right end, and a prism at the right end; The head and tail of the internal fixing steel plate are provided with four first fixing threaded holes on the upper and lower axes, and Kirschner wire holes are provided at the end edges of the head and tail of the steel plate. A track is provided on the steel plate body, and a slider is provided in the track, and the slider can slide in the track; Four second fixing threaded holes are penetrated on the upper and lower axes of the slider, and tooth patterns are arranged on the back side of the slider. The width of the slider is consistent with the width of the internal fixing steel plate track.

2. The bone transport device in skin and soft tissue combined with an external fixator according to claim 1, characterized in that: The outer fixed circular ring frame is evenly distributed with a plurality of first circular holes, and a second circular hole is arranged between the first circular holes. Two fixed threaded sleeves are symmetrically connected on the left and right axes of the upper side of the outer fixed circular ring frame, and two fixed threaded sleeves are symmetrically connected on the front and rear axes of the lower side of the outer fixed circular ring frame.

3. A method for using the skin soft tissue bone transport device in combination with an external fixator according to any one of claims 1 to 2, characterized in that: The principle of bone transfer surgery is to cut off the bone at the upper end of the bone defect, and slowly move the cut free bone segment to the distal end through a special external fixator. New bone tissue will form on the traces left by the cut free bone segment, and the bone transfer process is completed when the free bone segment and the distal bone meet. After the bone transfer process is completed, the free bone segment and the new bone tissue are fixed. After the new bone tissue is mineralized and the free bone segment and the distal bone meet and heal, the repair of the bone defect is completed. The bone transfer device in skin soft tissue matched with an external fixator comprises the following steps: firstly, an external fixation bolt is passed through a fixed threaded sleeve on an external fixation ring frame and implanted into the patient's bone, and the external fixation ring frame is fixed to the upper bone of the bone defect; secondly, an internal fixation steel plate is implanted into the patient's subcutaneous tissue and connected to the bone of the bone defect, the head of the steel plate is connected to the upper bone of the bone defect, the tail of the steel plate is connected to the lower bone of the bone defect, and a slider is connected to the cut free bone segment; then, a first bracket is connected to the external fixation ring frame with bolts and nuts, and a second bracket is adjusted to connect to the first bracket The connection length is set so that the gear steel just touches the tooth pattern of the slider when the rotating shaft is implanted into the patient's subcutaneous tissue; then, a rotating handle is connected to the prism of the rotating shaft. The doctor uses the rotating handle to drive the rotating shaft to rotate, thereby driving the gear to rotate and drive the slider to move. The movement of the slider drives the cut free bone segment to move. The ratchet makes a sound every time it jumps, which makes it convenient for the doctor to control the movement distance of the slider; finally, after the bone transfer process is completed, the new bone and the free bone segment are fixed, and the external fixator is removed, waiting for the new bone to mineralize and the free bone segment to heal at the meeting point with the distal bone.

4. Use of the intra-skin soft tissue bone transport device according to any one of claims 1 to 2 in bone transport surgery.

Images