Incision traction device for orthopedic surgery

Abstract

The invention relates to the technical field of medical instruments, in particular to an incision traction device for orthopedic surgery. Comprising a support, the support is connected with two sliding supporting blocks in a sliding mode, the sliding supporting blocks are connected with a first sliding rail in a sliding mode, the first sliding rail is connected with a first sliding block in a sliding mode, the first sliding block is connected with a second sliding rail in a sliding mode, the second sliding rail is provided with an arc-shaped groove, and the arc-shaped groove of the second sliding rail is connected with an arc-shaped frame in a sliding mode; and the number of the third sliding rails is two, the two third sliding rails are fixedly connected to the adjacent arc-shaped frames correspondingly, the third sliding rails are slidably connected with two second sliding blocks, the second sliding blocks are rotatably connected with rolling frames, and the two rolling frames of the same third sliding rail are jointly and fixedly connected with an extrusion plate. The arc-shaped frame slides along the arc-shaped groove in the second sliding rail, the two extrusion plates open the incision of the patient along the rotating path, the moving path of the extrusion plates extruding the inner side of the incision of the patient is short, and the pulling force on the inner side of the incision of the patient is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an incision traction device for orthopedic surgery. Background Art

[0002] When performing orthopedic surgery, medical staff usually need to cut the patient's muscles and make incisions, and then they can repair and treat the patient's bones. During the surgery on the patient's bones, in order to prevent the muscles from blocking the medical staff's vision and limiting the medical staff's operating range, it is usually necessary to use an incision traction device to pull the patient's incision open, thereby reducing the difficulty of the operation and increasing the success rate of the operation. Existing incision traction devices are usually divided into two types. One device uses multiple retractors to hook the muscles inside the patient's incision to pull the patient's incision open. However, when the retractors hook the patient's muscles, they will cause different degrees of damage to the patient's muscles depending on the depth of the hooked muscles. , which not only increases the possibility of surgical failure, but also makes postoperative recovery more difficult. The other device uses two folded or vertical hard plates. After inserting the hard plates into the incision, the two hard plates are dragged in opposite directions to open the patient's incision. Although this device causes less damage to the muscles than the first device, the second device exerts the same squeezing force on the inside and outside of the incision when stretching the incision, resulting in a relatively large pulling force on the muscles inside the incision, which can cause excessive stretching or even tearing of the muscles inside the incision, causing secondary injury to the patient, and also increasing the risk of surgical failure and difficulty of postoperative recovery for the patient. Summary of the invention

[0003] In order to overcome the shortcoming that the existing incision traction device is easy to cause secondary damage to the patient's incision, the present invention provides an incision traction device for orthopedic surgery.

[0004] Technical solution: An incision traction device for orthopedic surgery, comprising: a bracket, the bracket is slidably connected with two symmetrically distributed sliding support blocks, the sliding support block is slidably connected with a first slide rail, the first slide rail is slidably connected with a first sliding block, the first sliding block is slidably connected with a second slide rail, the second slide rail is provided with an arc groove, and an arc frame is slidably connected to the arc groove of the second slide rail; a third slide rail has two, which are respectively fixed to adjacent arc frames, the third slide rail is slidably connected with two symmetrically distributed second sliding blocks, the second sliding block is rotatably connected with a rolling frame, and the two rolling frames on the same third slide rail are commonly fixed with an extrusion plate, and the extrusion plate is made of flexible material; a deformation mechanism has two, which are respectively arranged on adjacent third slide rails, for adjusting the shape of adjacent extrusion plates according to the surgical incision of the patient; an adjustment mechanism has two, which are respectively arranged between adjacent first slide rails and second slide rails, for adjusting the specific position of adjacent arc frames.

[0005] In addition, it is particularly preferred that arc grooves and friction blocks are arranged at intervals on the lower side of the extrusion plate, all the friction blocks and all the arc grooves on the same extrusion plate are distributed at intervals, and the lower part of the extrusion plate is fixed with fixed pull rings distributed at intervals.

[0006] In addition, it is particularly preferred that the deformation mechanism includes: a third sliding block, slidably connected to the adjacent third sliding rail; at least two extrusion columns, both slidably connected to the adjacent third sliding blocks, the extrusion columns are provided with extrusion wheels, and the extrusion wheels are used to squeeze the extrusion plate to make the extrusion plate convex; a self-locking component, arranged on the third sliding rail, for automatically locking the position of the rolling frame.

[0007] In addition, it is particularly preferred that the length of the uppermost extrusion column is greater than twice the length of the adjacent and lowermost extrusion column, and the lowermost extrusion column is located on the upper side of the adjacent extrusion plate at 1 / 3 from bottom to top.

[0008] In addition, it is particularly preferred that the extrusion plate is an arc-shaped plate, the rolling frame is a conical shaft near the adjacent extrusion plate, the extrusion plate is wrapped around the adjacent rolling frame, the third slide rail is an arc-shaped slide rail, a bevel gear is fixed to the rolling frame, and the third slide rail is provided with a rack that meshes with the bevel gear on the adjacent rolling frame.

[0009] In addition, it is particularly preferred that a side of the rolling frame away from the adjacent third slide rail is rotatably connected to a roller.

[0010] In addition, it is particularly preferred that the third sliding block is rotatably connected to at least two adjustment handles, the adjustment handles on the same extrusion plate correspond one to one to the extrusion columns, and the extrusion columns are threadedly connected to adjacent adjustment handles.

[0011] In addition, it is particularly preferred that the self-locking component includes: a first sliding member, having two, which are respectively slidably connected to adjacent second sliding blocks, and a first elastic member is installed between the two, the first sliding member is fixedly connected to a first limiting member, the first limiting member is made of a flexible material, and the first limiting member is in compression contact with the rack of the adjacent third sliding rail; a second sliding member, which is slidably connected to the third sliding block, and a second elastic member is installed between the two, the second sliding member is fixedly connected to a second limiting member, the second limiting member is made of a flexible material, and the second limiting member is in compression contact with the rack of the adjacent third sliding rail.

[0012] In addition, it is particularly preferred that the adjustment mechanism includes: a third limit piece, which is slidably connected to the second slide rail, the arc frame is provided with a limit groove, and the third limit piece limits the arc frame by being inserted into the limit groove, the first slide rail is rotatably connected with a rotating handle, and the rotating handle is threadedly connected to the adjacent sliding support block; the third limit block has two symmetrically distributed ones, which are respectively slidably connected to the lower side of the second slide rail, and a third elastic piece is installed between the two third limit blocks, and the third limit piece squeezes the two adjacent third limit blocks, and the third limit block is in compression contact with the first sliding block; a locking component is provided on the second slide rail, and is used to lock the position of the third limit piece.

[0013] In addition, it is particularly preferred that the locking assembly includes: at least two fixed shells, both of which are fixedly connected to the second slide rail; at least two second limit blocks, which are respectively slidably connected in adjacent fixed shells, and a fourth elastic member is installed between the two, and the third limit member is fixedly connected to two symmetrically distributed first limit blocks, and the second limit blocks and the adjacent first limit blocks are squeezed against each other.

[0014] In addition, it is particularly preferred that it also includes: the bracket has a symmetrically distributed first sliding frame and a symmetrically distributed second sliding frame, the symmetrically distributed first sliding frames are rotatably connected to each other, the first sliding frame is rotatably connected to the adjacent second sliding frame, the bracket is provided with a first fixing clamp, and the first fixing clamp is equipped with a plurality of first rotating jaws; the second fixing clamp has two symmetrically distributed ones, which are respectively fixed to adjacent sliding support blocks, and the second fixing clamp is provided with a plurality of second rotating jaws; a conversion component is provided between the two second sliding frames, and is used to limit the two second sliding frames.

[0015] In addition, it is particularly preferred that the conversion assembly includes: a first fixed block, fixedly connected to one of the second sliding frames; a second fixed block, fixedly connected to another of the second sliding frames, the second fixed block being slidably connected to a limiting strip, and the limiting strip is used to limit the adjacent first fixed block.

[0016] Compared with the prior art, the present invention has the following advantages: the present invention enables the arc frame to slide along the arc groove on the second slide rail, so that the two extrusion plates open the patient's incision along a rotation path, and the path of the extrusion plates to squeeze the inner side of the patient's incision is shorter. Therefore, while maintaining the field of vision and operating space of medical staff, the pulling force on the inner side of the patient's incision is reduced, the probability of secondary injury to the patient's incision is reduced, and the probability of successful surgery is increased.

[0017] The present invention adjusts the protruding position of the squeezing plate by means of the third sliding block and the squeezing column, and adjusts the supporting range of the squeezing plate by means of the rolling frame, thereby making the device adaptable to various surgical situations and increasing the applicable range of the device.

[0018] The present invention appropriately changes the shape of the bracket so that the device can not only pull the incisions on the patient's limbs, but also pull the incisions on the patient's body. When dealing with different types of operations, there is no need to prepare multiple models of traction devices, thereby increasing the scope of application of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the sliding support block, the first sliding rail and the first sliding block of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the first sliding block, the second sliding rail and the arc frame of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the third slide rail, the rolling frame and the extrusion plate of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle; Figure 6 For the present invention Figure 4 The enlarged view of point B in the middle; Figure 7 It is a schematic diagram of the three-dimensional structure of the first sliding member and the first limiting member of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the first slide rail, the first sliding block and the second slide rail of the present invention; Fig. 9 is a cross-sectional view of the sliding support block and the first sliding block of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the third limiting member, the first limiting block and the fixed shell of the present invention; Fig.11 It is a schematic diagram of the three-dimensional structure of the first sliding block, the third limiting member and the third limiting block of the present invention; Fig.12 It is a schematic diagram of the three-dimensional structure of the first fixing block, the second fixing block and the limiting strip of the present invention; Fig.13 It is an exploded view of the first fixing block, the second fixing block and the limiting strip of the present invention.

[0020] In the figure: 1, bracket, 101, first fixing fixture, 1011, first rotating clamp, 102, first sliding frame, 103, second sliding frame, 2, sliding support block, 3, first slide rail, 301, rotating handle, 4, first sliding block, 5, second slide rail, 6, arc frame, 601, limit groove, 7, third slide rail, 8, second sliding block, 9, rolling frame, 91, roller, 10, extrusion plate, 11, third sliding block, 111, arc groove, 112, friction block , 113, fixed pull ring, 12, extrusion column, 121, extrusion wheel, 122, adjustment handle, 13, first sliding member, 131, first limiting member, 14, second sliding member, 141, second limiting member, 15, third limiting member, 151, first limiting block, 16, fixed shell, 161, second limiting block, 17, third limiting block, 18, first fixed block, 19, second fixed block, 191, limiting strip, 20, second fixed clamp, 2011, second rotating clamp. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0022] An incision traction device for orthopedic surgery, such as Figure 1-Figure 6 As shown, it includes: a bracket 1, the bracket 1 is slidably connected with two symmetrically distributed sliding support blocks 2, the sliding support block 2 is slidably connected with a first slide rail 3, the first slide rail 3 is slidably connected with a first sliding block 4, the first sliding block 4 is slidably connected with a second slide rail 5, the second slide rail 5 is provided with an arc groove, and an arc frame 6 is slidably connected to the arc groove of the second slide rail 5; a third slide rail 7, which has two, respectively fixed on adjacent arc frames 6, the third slide rail 7 is slidably connected with two symmetrically distributed second sliding blocks 8, the second sliding block 8 is rotatably connected with a rolling frame 9, and the two rolling frames 9 on the same third slide rail 7 are commonly fixed with an extrusion plate 10, and the extrusion plate 10 is a flexible material; a deformation mechanism, which has two, respectively arranged on adjacent third slide rails 7, for adjusting the shape of adjacent extrusion plates 10 according to the patient's surgical incision; an adjustment mechanism, which has two, respectively arranged between adjacent first slide rails 3 and second slide rails 5, for adjusting the specific position of adjacent arc frames 6.

[0023] Furthermore, it is particularly preferred that Figure 4As shown, arc grooves 111 and friction blocks 112 are arranged at intervals on the lower side of the extrusion plate 10, all friction blocks 112 and all arc grooves 111 on the same extrusion plate 10 are distributed at intervals, and the lower part of the extrusion plate 10 is fixed with fixed pull rings 113 distributed at intervals.

[0024] In this embodiment, two groups of support pads are slidably connected to the bracket 1 for supporting the patient's limbs. A support pad is also installed on the upper side of the sliding support block 2 to facilitate supporting the patient's incision area. The arc center of the arc groove on the second slide rail 5 is located below the extrusion plate 10. Therefore, when the medical staff controls the arc frame 6 to slide along the second slide rail 5, the upper side of the extrusion plate 10 moves a greater distance than the lower side of the extrusion plate 10, thereby preventing the lower side of the extrusion plate 10 from moving too far, causing the inner side of the patient's incision to be secondary injured due to excessive stretching. The arc groove 111 is used to increase the medical staff's The friction block 112 is used to increase the friction between the extrusion plate 10 and the inner side of the patient's incision to prevent the patient's incision and the extrusion plate 10 from sliding relative to each other. Because the extrusion plate 10 is made of flexible material (such as a light-transmitting flexible carbon fiber composite material or a light-transmitting thin plastic sheet, etc.), the medical staff can clamp one of the fixed pull rings 113 with tweezers, and then pull up part of the extrusion plate 10, so that the medical staff can carefully check the area covered by the extrusion plate 10 or remove the bone fragments embedded in the inner wall of the incision.

[0025] Workflow: When the medical staff is preparing to perform surgery on the patient's limbs, they first install the device on the side of the operating bed through the existing fixing device, and disinfect the parts of the support pad, rolling frame 9 and extrusion plate 10 of the bracket 1 that come into contact with the patient. Then, the patient's limb is placed on the support pad on the bracket 1, and the medical staff moves the two sliding support blocks 2 to the two sides of the part that needs to be incised. Then, the medical staff incises the position where the patient needs treatment. The medical staff operates the two deformation mechanisms according to the size of the incision, and then adjusts the shape and size of the two extrusion plates 10 so that the shape and size of the two extrusion plates 10 are adapted to the size of the patient's incision. Then, the medical staff controls the movement of the first slide rail 3, the first sliding block 4, the second slide rail 5 and the arc frame 6 by operating the adjustment mechanism, and adjusts the positions of the two arc frames 6, the two third slide rails 7 and the two extrusion plates 10. The medical staff first moves the two extrusion plates 10 to the patient's incision. At the top, the two first slide rails 3 are controlled to slide downward so that the two squeezing plates 10 are inserted into the patient's incision. The medical staff then controls the two arc frames 6 to slide downward along the arc grooves on the adjacent second slide rails 5 respectively. The arc frame 6 drives the third slide rail 7, the second sliding block 8, the rolling frame 9 and the squeezing plate 10 thereon to swing downward. The squeezing plate 10 squeezes the inner wall of the patient's incision and moves together to open the patient's incision. In the process of opening the incision, the squeezing plate 10 squeezes the inner side of the incision through the friction block 112 and moves together. The distance that the squeezing plate 10 drives the inner side of the incision to move is less than the distance that the squeezing plate 10 drives the outer side of the patient's incision to move. While ensuring that the patient's incision is opened, the probability of secondary injury caused by dragging the inner side of the patient's incision is reduced. At the same time, the patient's incision is supported into an inverted triangular prism shape, which is convenient for medical staff to observe the environment inside the incision, and increases the operating space for medical staff to perform surgery, thereby increasing the probability of successful surgery.

[0026] During the operation, the medical staff pinches the fixed pull ring 113 with tweezers and pulls the fixed pull ring 113 upwards. The fixed pull ring 113 drives the adjacent extrusion plate 10 to bend upwards, thereby cleaning the incision area pressed by the extrusion plate 10. At the same time, after the cleaning, the medical staff can use tweezers to push the muscle that needs to be pulled to the friction block 112, so that the extrusion plate 10 pulls the muscle at that location through the friction block 112, which is convenient for the medical staff to adjust the traction position of the friction block 112 as needed.

[0027] When the operation is completed, the medical staff controls the first slide rail 3, the first sliding block 4, the second slide rail 5 and the arc frame 6 and other components to move in the opposite direction and reset through the adjustment mechanism, sutures the patient's incision, and re-disinfects the parts of the bracket 1 such as the support pad, the rolling frame 9 and the extrusion plate 10 that are in contact with the patient.

[0028] Furthermore, it is particularly preferred that Figure 3 , Figure 4 and Figure 6As shown, the deformation mechanism includes: a third sliding block 11, which is slidably connected to the adjacent third sliding rail 7; there are at least two extrusion columns 12, both of which are slidably connected to the adjacent third sliding block 11, and the extrusion columns 12 are provided with extrusion wheels 121, and the extrusion wheels 121 are used to squeeze the extrusion plate 10 to make the extrusion plate 10 bulge; a self-locking component, which is arranged on the third sliding rail 7 and is used to automatically lock the position of the rolling frame 9.

[0029] Furthermore, it is particularly preferred that Figure 3 and Figure 4 As shown, the length of the uppermost extrusion column 12 is greater than twice the length of the adjacent lowermost extrusion column 12 , and the lowermost extrusion column 12 is located on the upper side of the adjacent extrusion plate 10 at 1 / 3 from bottom to top.

[0030] Furthermore, it is particularly preferred that Figure 3 and Figure 4 As shown, the extrusion plate 10 is an arc-shaped plate, the rolling frame 9 is a conical shaft near the adjacent extrusion plate 10, the extrusion plate 10 is wound around the adjacent rolling frame 9, the third slide rail 7 is an arc-shaped slide rail, a bevel gear is fixed to the rolling frame 9, and the third slide rail 7 is provided with a rack meshing with the bevel gear on the adjacent rolling frame 9.

[0031] Furthermore, it is particularly preferred that Figure 3 and Figure 4 As shown, a roller 91 is rotatably connected to a side of the rolling frame 9 away from the adjacent third slide rail 7 .

[0032] Furthermore, it is particularly preferred that Figure 4 As shown, the third sliding block 11 is rotatably connected to at least two adjusting handles 122 , and the adjusting handles 122 on the same extrusion plate 10 correspond one to one to the extrusion columns 12 , and the extrusion columns 12 are threadedly connected to adjacent adjusting handles 122 .

[0033] Furthermore, it is particularly preferred that Figure 3-Figure 7 As shown, the self-locking component includes: a first sliding member 13, having two, which are respectively slidably connected to the adjacent second sliding block 8, and a first elastic member is installed between the two, the first sliding member 13 is fixedly connected to a first limiting member 131, the first limiting member 131 is made of a flexible material, and the first limiting member 131 is in compression contact with the rack of the adjacent third slide rail 7; a second sliding member 14, which is slidably connected to the third sliding block 11, and a second elastic member is installed between the two, the second sliding member 14 is fixedly connected to a second limiting member 141, the second limiting member 141 is made of a flexible material, and the second limiting member 141 is in compression contact with the rack of the adjacent third slide rail 7.

[0034] In this embodiment, the rolling frame 9 is substantially a conical roller. Two rolling frames 9 on the same third slide rail 7 wind up a squeeze plate 10 together. The two rolling frames 9 adjust the length of the squeeze plate 10 by rolling up the squeeze plate 10 thereon. The squeeze plate 10 is an arc-shaped plate. Figure 3 and Figure 4 The figures in the figure are all in the state where the extrusion plate 10 is fully extended. The length of the lower side of the extrusion plate 10 is smaller than the length of the upper side of the extrusion plate 10. While maintaining the extrusion plate 10 to squeeze the outside of the incision over a large area, the probability of the extrusion plate 10 over-stretching the inside of the incision is reduced; the roller 91 is a friction wheel. When the extrusion plate 10 is inserted into the patient's incision and the position of the extrusion plate 10 needs to be adjusted, the medical staff controls the rotation of the rolling frame 9. The roller 91 limits the muscles on the inside of the incision in the horizontal direction of the rolling frame 9 through friction, thereby reducing the probability of the muscles sliding in the vertical direction relative to the rolling frame 9 due to the natural closing force of the incision; the first elastic member on the first sliding member 13 and the second elastic member on the second sliding member 14 are both springs, and both are always in a compressed and force-storing state. The initial state of the second sliding member 14 is located at the symmetry axis of the two rolling frames 9; the first limit member 131 and the second limit member 141 are both made of flexible materials, and the two are connected to the teeth on the adjacent third slide rail 7 After the uppermost extrusion column 12 contacts the adjacent third sliding block 11, it is partially embedded in the rack of the third slide rail 7, thereby increasing the contact area between the first limiting member 131 and the second limiting member 141 and the rack on the third slide rail 7, and the first limiting member 131 and the second limiting member 141 respectively limit the adjacent second sliding block 8 and the adjacent third sliding block 11 by friction; by increasing the length of the uppermost extrusion column 12 protruding out of the adjacent third sliding block 11, the uppermost extrusion column 12 greatly squeezes the upper side of the adjacent extrusion plate 10, and the upper side of the extrusion plate 10 greatly bulges outward (the upper side of the extrusion plate 10 is located on the outside of the patient's incision), thereby increasing the extrusion force and friction force of the extrusion plate 10 on the outside of the patient's incision, and by limiting the height of the lowermost extrusion column 12 relative to the adjacent extrusion plate 10, it is avoided that the lowermost extrusion column 12 excessively affects the extrusion force of the lower part of the adjacent extrusion plate 10 on the inner side of the patient's incision during the process of extruding the adjacent extrusion plate 10, thereby avoiding secondary damage to the inner side of the patient's incision.

[0035] Workflow: When the medical staff adjusts the size of the extrusion plate 10 according to the size of the patient's incision, take a third slide rail 7 and its components as an example (with Figure 4The first limit member 131 is squeezed and embedded in the rack on the third slide rail 7 to limit the adjacent second sliding block 8 and the rolling frame 9.

[0036] After the medical staff has adjusted the position of the first sliding member 13, they operate the second sliding member 14 to adjust the position of the third sliding block 11 according to a similar principle, and then adjust the position of the squeezing column 12 on the third sliding block 11 to squeeze the adjacent squeezing plate 10, so as to adjust the position of the maximum opening of the incision. When the third sliding block 11 drives the squeezing column 12 to move, the squeezing wheel 121 rolls along the adjacent squeezing plate 10 to avoid excessive squeezing force between the squeezing wheel 121 and the adjacent squeezing plate 10, which causes excessive resistance to the medical staff moving the third sliding block 11. After adjusting the position of the third sliding block 11, the medical staff rotates the two adjustment handles 122. When the adjustment handles 122 rotate, the movement of the adjacent squeezing columns 12 is controlled by the threads, and then the distance that the squeezing column 12 protrudes from the adjacent third sliding block 11 is adjusted. According to the surgical requirements, the medical staff adjusts the distance that the squeezing column 12 squeezes the squeezing plate 10 to the outside of the incision, and appropriately expands the breadth of the medical staff's field of vision and the surgical operation space during the operation.

[0037] During the operation, if the medical staff finds that the length of the incision needs to be increased (i.e., the position of the extrusion plate 10 needs to be moved), there is no need to operate the arc frame 6 to drive the adjacent components to move to the outside of the incision (i.e., the extrusion plate 10 does not need to be separated from the incision). The position of the extrusion plate 10 can be directly changed by synchronously adjusting the positions of the two rolling frames 9 according to the above operation (controlling the two rolling frames 9 to move together, or only controlling one rolling frame 9 to move). The medical staff can also adjust the position of the third sliding block 11 during the operation according to the same principle of the above operation, thereby adjusting the position of the additional expansion of the surgical operating space.

[0038] Furthermore, it is particularly preferred that Figure 3 and Figure 8-Figure 11As shown, the adjustment mechanism includes: a third limit member 15, which is slidably connected to the second slide rail 5, and the arc frame 6 is provided with a limit groove 601. The third limit member 15 limits the arc frame 6 by inserting the limit groove 601. The first slide rail 3 is rotatably connected with a rotating handle 301, and the rotating handle 301 is threadedly connected to the adjacent sliding support block 2; the third limit block 17 has two symmetrically distributed ones, which are respectively slidably connected to the lower side of the second slide rail 5, and a third elastic member is installed between the two third limit blocks 17. The third limit member 15 squeezes the two adjacent third limit blocks 17, and the third limit block 17 is in compression contact with the first sliding block 4; a locking component is arranged on the second slide rail 5, and is used to lock the position of the third limit member 15.

[0039] Furthermore, it is particularly preferred that Fig. 9 and Fig.10 As shown, the locking assembly includes: a fixed shell 16, at least two of which are fixedly connected to the second slide rail 5; a second limit block 161, at least two of which are slidably connected to adjacent fixed shells 16, and a fourth elastic member is installed between the two, and the third limit member 15 is fixedly connected to two symmetrically distributed first limit blocks 151, and the second limit block 161 and the adjacent first limit block 151 are pressed against each other.

[0040] In this embodiment, a serrated protrusion is provided on one side of the third limiting member 15 close to the limiting groove 601, and the limiting groove 601 has several groups of continuous serrated protrusions of the same shape as the third limiting member 15. The third limiting member 15 limits the arc frame 6 by inserting the serrated protrusion thereon into the limiting groove 601; the third elastic member between two adjacent third limiting blocks 17 is a tension spring, and the contact surface between the third limiting block 17 and the first sliding block 4 is a friction surface. The third limiting block 17 limits the second slide rail 5 by squeezing the first sliding block 4; the fourth elastic member on the second limiting block 161 is a spring, and the second limiting block 161 is provided with a triangular protrusion, and the first limiting block 151 is provided with at least two grooves for facilitating the insertion of the triangular protrusion on the adjacent second limiting block 161. The initial state of the third limiting member 15 is as shown in FIG. Fig. 9 shown.

[0041] Working process: When the medical staff needs to adjust the height of the arc frame 6, the medical staff twists the corresponding rotating handle 301, and the rotating handle 301 drives the first slide rail 3 to move up and down relative to the sliding support block 2 through the thread, thereby causing the first slide rail 3 to drive the height of the first sliding block 4, the second slide rail 5 and the arc frame 6.

[0042] Medical staff need to adjust the position of the arc frame 6 so that the extrusion plate 10 can open the patient's incision. Fig. 9Taking the position of the middle arc frame 6 as an example: the medical staff pulls the third limit piece 15 to move to the right, the first limit block 151 on the third limit piece 15 squeezes the adjacent second limit block 161 through the groove to move, and the second limit block 161 compresses the fourth elastic member thereon and retracts into the fixed shell 16, until the second limit block 161 gradually aligns with the next groove on the adjacent first limit block 151, the medical staff releases the third limit piece 15, and the second limit block 161 is inserted into the adjacent first limit block 1 under the action of the fourth elastic member thereon 51, and the limiting of the third limiting member 15 is restored. At this time, the arc frame 6 can slide along the arc rail of the second slide rail 5. The medical staff pulls the arc frame 6 to slide, so that the extrusion plate 10 opens the patient's incision. After adjusting the position of the extrusion plate 10, the staff pushes the third limiting member 15 to move to the left and reset. The third limiting member 15 passes through the second limiting block 161 according to the same principle as above and limits the arc frame 6 again. The second limiting block 161 limits the third limiting member 15 again.

[0043] When the medical staff pulls the third limit piece 15 to move to the right, the third limit piece 15 gradually decreases and squeezes the two adjacent third limit blocks 17. The two third limit blocks 17 move toward each other under the action of the third elastic member therebetween, and the third limit block 17 loses contact with the first sliding block 4. The second slide rail 5 is no longer limited by the third limit block 17. At this time, the medical staff can adjust the position of the second slide rail 5 as needed, and then adjust the horizontal position of the arc frame 6 and the extrusion plate 10. When the staff pushes the third limit piece 15 to move to the left and reset, the third limit piece 15 squeezes the two third limit blocks 17 to move and reset. The two third limit blocks 17 limit the second slide rail 5 by squeezing the first sliding block 4, and the third elastic member between the two third limit blocks 17 is stretched and stored again.

[0044] Furthermore, it is particularly preferred that Figure 1-Figure 3 and Fig.12 As shown, it also includes: the bracket 1 has a symmetrically distributed first sliding frame 102 and a symmetrically distributed second sliding frame 103, the symmetrically distributed first sliding frames 102 are rotatably connected to each other, the first sliding frame 102 is rotatably connected to the adjacent second sliding frame 103, a first fixed clamp 101 is arranged on the bracket 1, and the first fixed clamp 101 is installed with a plurality of first rotating jaws 1011; the second fixed clamp 20 has two symmetrically distributed ones, which are respectively fixed on the adjacent sliding support blocks 2, and the second fixed clamp 20 is provided with a plurality of second rotating jaws 2011; a conversion component is arranged between the two second sliding frames 103, and is used to limit the two second sliding frames 103.

[0045] Furthermore, it is particularly preferred that Fig.12 and Fig.13As shown, the conversion assembly includes: a first fixed block 18, fixed to one of the second sliding frames 103; a second fixed block 19, fixed to the other second sliding frame 103, the second fixed block 19 is slidably connected to a limiting strip 191, and the limiting strip 191 is used to limit the adjacent first fixed block 18.

[0046] In this embodiment, the bracket 1 has two symmetrically distributed first sliding frames 102 and two symmetrically distributed second sliding frames 103. When the two first sliding frames 102 and the two second sliding frames 103 are in a parallel state, the state of the bracket 1 is as follows: Figure 1 As shown, at this time, the medical staff can place the patient's limbs on the bracket 1. This state is the initial state. The bracket 1 can be converted into other forms through the conversion component, which is convenient for the medical staff to assemble the device on both sides of the operating table, so that the device can be used in the operation on the patient's body, thereby increasing the scope of application of the device; the first rotating jaw 1011 and the second rotating jaw 2011 are both existing devices, usually composed of a handle, a threaded rod and a friction block 112, which are used to fix the bracket 1 on the outside of the operating table to reduce the probability of the bracket 1 shaking relative to the operating table during the operation.

[0047] Workflow: When medical staff only need to perform surgery on the patient's limbs, they only need to place the bracket 1 on one side of the operating table, and then control the first rotating claw 1011 on the first fixing clamp 101 to clamp the edge of the operating table, thereby fixing the device on one side of the operating table.

[0048] When the medical staff needs to perform surgery on the patient's torso, the medical staff pulls the limiting strip 191 out of the second fixing block 19, and the limiting strip 191 no longer limits the first fixing block 18. At this time, the first fixing block 18 and the second fixing block 19 are in a mutually separated state, and the medical staff pulls the two second sliding frames 103 to separate from each other, and the two second sliding frames 103 drive the two first sliding frames 102 to separate from each other, and the second sliding frames 103 and the adjacent first sliding frames 102 rotate with each other, and the two first sliding frames 102 rotate with each other (the two first sliding frames 102 gradually form a shape similar to A, and the angle between the two first sliding frames 102 gradually increases with the rotation). The two second sliding frames 103 and the two first sliding frames 102 are rotated into a shape similar to N, and the distance between the two second sliding frames 103 is equal to the width of the operating bed. The medical staff places the device on the outside of the operating bed so that the two squeezing plates 10 are respectively located on both sides of the operating bed. The medical staff controls the second rotating jaws 2011 on the two second fixing clamps 20 to clamp the edge of the operating bed so that the two second sliding frames 103 are fixed on the outside of the operating bed. Then the medical staff adjusts the specific position of the squeezing plate 10 in the same manner as above and completes the subsequent surgical steps.

[0049] The above embodiments are provided for persons familiar with the art to implement or use the present invention. Persons familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but is determined by the maximum scope of the innovative features displayed by the present invention.

Claims

1. An incision traction device for orthopedic surgery, characterized in that it comprises: A bracket (1), wherein the bracket (1) is slidably connected to two symmetrically distributed sliding support blocks (2), the sliding support block (2) is slidably connected to a first slide rail (3), the first slide rail (3) is slidably connected to a first sliding block (4), the first sliding block (4) is slidably connected to a second slide rail (5), the second slide rail (5) is provided with an arc groove, and an arc frame (6) is slidably connected to the arc groove of the second slide rail (5); The third slide rail (7) has two parts, each of which is fixedly connected to the adjacent arc-shaped frames (6); the third slide rail (7) is slidably connected to two symmetrically distributed second slide blocks (8); the second slide blocks (8) are rotatably connected to a rolling frame (9); the two rolling frames (9) on the same third slide rail (7) are commonly fixedly connected to an extrusion plate (10); the extrusion plate (10) is made of a flexible material; There are two deformation mechanisms, which are respectively arranged on adjacent third slide rails (7) and are used to adjust the shape of adjacent squeezing plates (10) according to the surgical incision of the patient; There are two adjustment mechanisms, which are respectively arranged between the adjacent first slide rails (3) and the second slide rails (5) and are used to adjust the specific positions of the adjacent arc-shaped frames (6).

2. The orthopedic surgical incision traction device according to claim 1, characterized in that: The lower side of the extrusion plate (10) is provided with arc-shaped grooves (111) and friction blocks (112) at intervals, all the friction blocks (112) and all the arc-shaped grooves (111) on the same extrusion plate (10) are arranged at intervals, and the lower part of the extrusion plate (10) is fixedly connected with fixed pull rings (113) arranged at intervals.

3. The orthopedic surgical incision traction device according to claim 1, characterized in that: The deformation mechanism comprises: A third sliding block (11), slidably connected to the adjacent third sliding rail (7); There are at least two extrusion columns (12), each of which is slidably connected to an adjacent third sliding block (11); the extrusion column (12) is provided with an extrusion wheel (121), and the extrusion wheel (121) is used to squeeze the extrusion plate (10) so that the extrusion plate (10) is raised; A self-locking component is arranged on the third slide rail (7) and is used to automatically lock the position of the rolling frame (9).

4. The orthopedic surgical incision traction device according to claim 3, characterized in that: The length of the uppermost extrusion column (12) is greater than twice the length of the adjacent extrusion column (12) located at the lowermost side, and the lowermost extrusion column (12) is located on the upper side of the adjacent extrusion plate (10) at 1 / 3 from bottom to top.

5. The orthopedic surgical incision traction device according to claim 4, characterized in that: The extrusion plate (10) is an arc-shaped plate, the rolling frame (9) is a conical shaft near the adjacent extrusion plate (10), the extrusion plate (10) is wound around the adjacent rolling frame (9), the third slide rail (7) is an arc-shaped slide rail, a bevel gear is fixedly connected to the rolling frame (9), and the third slide rail (7) is provided with a rack meshing with the bevel gear on the adjacent rolling frame (9).

6. The orthopedic surgical incision traction device according to claim 5, characterized in that: A roller (91) is rotatably connected to a side of the rolling frame (9) away from the adjacent third slide rail (7).

7. The orthopedic surgical incision traction device according to claim 3, characterized in that: The third sliding block (11) is rotatably connected to at least two adjustment handles (122); the adjustment handles (122) on the same extrusion plate (10) correspond one to one to the extrusion columns (12); and the extrusion columns (12) are threadedly connected to adjacent adjustment handles (122).

8. The orthopedic surgical incision traction device according to claim 7, characterized in that: The self-locking component comprises: The first sliding member (13) has two parts, each of which is slidably connected to an adjacent second sliding block (8), and a first elastic member is installed between the two parts. The first sliding member (13) is fixedly connected to a first limiting member (131), and the first limiting member (131) is made of a flexible material. The first limiting member (131) is in extrusion contact with a rack of an adjacent third sliding rail (7); The second sliding member (14) is slidably connected to the third sliding block (11), and a second elastic member is installed between the two. The second sliding member (14) is fixedly connected to a second limiting member (141). The second limiting member (141) is made of a flexible material. The second limiting member (141) is in extrusion contact with the rack of the adjacent third slide rail (7).

9. The orthopedic surgical incision traction device according to claim 1, characterized in that: The adjustment mechanism comprises: a third limiting member (15) slidably connected to the second slide rail (5); the arc frame (6) is provided with a limiting groove (601); the third limiting member (15) limits the arc frame (6) by being inserted into the limiting groove (601); the first slide rail (3) is rotatably connected to a rotating handle (301); the rotating handle (301) is threadedly connected to the adjacent sliding support block (2); The third limit block (17) has two symmetrically distributed ones, each of which is slidably connected to the lower side of the second slide rail (5), and a third elastic member is installed between the two third limit blocks (17). The third limit member (15) squeezes two adjacent third limit blocks (17), and the third limit block (17) is in squeeze contact with the first sliding block (4); A locking assembly is arranged on the second slide rail (5) and is used to lock the position of the third limiting member (15).

10. The orthopedic surgical incision traction device according to claim 9, characterized in that: The locking assembly comprises: There are at least two fixed shells (16), both of which are fixedly connected to the second slide rail (5); The second limit blocks (161) are at least two in number and are respectively slidably connected in adjacent fixed shells (16), and a fourth elastic member is installed between the two. The third limit member (15) is fixedly connected to two symmetrically distributed first limit blocks (151), and the second limit blocks (161) and the adjacent first limit blocks (151) are mutually compressed.

11. The orthopedic surgical incision traction device according to claim 1, characterized in that: Also included are: The bracket (1) comprises a symmetrically distributed first sliding frame (102) and a symmetrically distributed second sliding frame (103), the symmetrically distributed first sliding frames (102) are rotatably connected to each other, the first sliding frame (102) is rotatably connected to the adjacent second sliding frame (103), and the bracket (1) is provided with a first fixing fixture (101), and the first fixing fixture (101) is equipped with a plurality of first rotating clamps (1011); The second fixing clamps (20) have two symmetrically distributed ones, which are respectively fixed to adjacent sliding support blocks (2), and the second fixing clamps (20) are provided with a plurality of second rotating clamps (211); The conversion component is arranged between the two second sliding frames (103) and is used to limit the position of the two second sliding frames (103).

12. The orthopedic surgical incision traction device according to claim 11, characterized in that: The conversion component includes: A first fixed block (18) fixedly connected to one of the second sliding frames (103); The second fixed block (19) is fixedly connected to another of the second sliding frames (103), and the second fixed block (19) is slidably connected to a limiting strip (191), and the limiting strip (191) is used to limit the adjacent first fixed block (18).

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