Grading traction device for spine deep surgery

Abstract

The invention provides a grading traction device for a spine deep part operation, and belongs to the technical field of spine operation traction devices. Comprising a traction device, a fixing column is fixedly connected to the bottom end of the middle of the traction device, and a first arc-shaped frame is fixedly connected to the outer side of the fixing column; the auxiliary grading assembly is used for facilitating use of the retractor in the operation and ensuring the visual field of an operation area, and the auxiliary grading assembly is connected with the retractor. Through the auxiliary grading assembly, different levels of tractors do not need to be replaced in time according to the progress of an operation, the working efficiency during the operation is improved, the time of replacing different types of tractors by workers is saved, the tractors can be located in an operation area all the time, the positions of the tractors are not changed, and the operation efficiency is improved. Therefore, the original distraction view of the retractor is ensured, the loss of the view is avoided, the condition of wound injury caused by taking the retractor for multiple times can be reduced, and the safety in an operation and the postoperative recovery of a patient are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of spinal surgery retractors, and particularly to a graded retractor for deep spinal surgery. Background Art

[0002] A spinal surgery retractor is a commonly used medical device in spinal surgery, mainly used to retract soft tissues in the spinal area during surgery to increase the operating space of the surgery and improve the accessibility and visibility of the surgical site.

[0003] For deep spinal surgery, since the passed structural tissues are different, generally, it is necessary to pass through different structures such as skin, fat, fascia, and muscle. When cutting through each layer of structure and entering the interior, the opening degree of the retractor will be changed according to the looseness of the structure in each layer. Even the retractor will be taken out first, the opening degree of the retractor will be manually adjusted, and then the retractor will be placed back in the original position again. However, this will easily lose the previously selected field of view. The removed retractor will change the originally opened field of view, and the secondary retraction will cause additional damage, which will have a certain impact on the patient and the postoperative recovery situation.

[0004] Therefore, the present application provides a graded retractor for deep spinal surgery to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a graded retractor for deep spinal surgery to solve the problem that when cutting through each layer of structure and entering the interior, the opening degree of the retractor is changed according to the looseness of the structure in each layer. Even the retractor will be taken out first, the opening degree of the retractor will be manually adjusted, and then the retractor will be placed back in the original position again. However, this will easily lose the previously selected field of view. The removed retractor will change the originally opened field of view, and the secondary retraction will cause additional damage, which will have a certain impact on the patient and the postoperative recovery situation.

[0006] To solve the above technical problem, the present invention provides the following technical solutions:

[0007] A graded retractor for deep spinal surgery, including a retractor. A fixed column is fixedly connected to the bottom end of the middle part of the retractor. An arc-shaped frame one is fixedly connected to the outer side of the fixed column. A stabilizing plate is fixedly connected to the bottom of the retractor. An arc-shaped frame three is attached to the outer surface of the stabilizing plate; an auxiliary grading component, which is used to facilitate the use of the retractor during the operation and ensure the field of view of the surgical area, and the auxiliary grading component is connected to the retractor.

[0008] Optionally, the auxiliary grading assembly includes a support frame fixedly connected to the bottom end of the stabilizing plate, the bottom end of the support frame is fixedly connected to an arc frame 2, the inner cavity of the bottom end of the arc frame 2 is fixedly connected to a steel wire 1, and the top of the stabilizing plate is fixedly connected to a traction steel wire 1.

[0009] Optionally, the end of the traction steel wire is fixedly connected to a toggle block, both sides of the toggle block are fitted with clamping plates, and both sides of the toggle block are provided with adaptation grooves.

[0010] Optionally, a fixing ring is fixedly connected to the outer surface of the middle part of the fixing column, a movable ring is installed on the surface of the fixing ring, and an elastic sheet is fixedly connected to the end of the fixing ring.

[0011] Optionally, the inner cavity at the bottom end of the arc frame three is fixedly connected to steel wire two, the outer surface of the movable ring is fixedly connected to the arc frame four, the inner cavity at the bottom end of the arc frame four is fixedly connected to steel wire three, the top of the movable ring is fixedly connected to traction steel wire two, and the fixed column is fixedly connected to a limiting ring near the outer surface of the elastic sheet.

[0012] Optionally, the end of the second traction steel wire is fixedly connected to a control column, both sides of the control column are fixedly connected to a limiting plate, both sides of the control column near the top of the limiting plate are fixedly connected to a supporting arc plate, and a weakened portion is opened in the middle of the supporting arc plate.

[0013] Optionally, the middle portion of the support frame is hollowed out, and the top end of the support frame is fixedly connected to the center position of the bottom end of the stabilizing plate, and the bottom end of the support frame is fixedly connected to the middle portion of the second arc-shaped frame.

[0014] Optionally, the toggle block is designed in the shape of a Chinese character "Q" which is narrow at the top and wide at the bottom, and the two sides of its bottom end are installed in the inner cavity of the retractor. The inner side of the clip-on plate is designed with a barb, and the size of the adapter groove is consistent with the size of the barb on the inner side of the clip-on plate. The end of the clip-on plate away from the toggle block is fixedly connected to the inner cavity of the retractor.

[0015] Optionally, there are two fixing rings and they are fixedly connected to the outer surface of the middle part of the fixing column, and half of the fixing ring is slotted. The movable ring is clamped in the slotted position of the fixing ring and fits each other. One end of the elastic sheet is fixedly connected to one end of the fixing ring, and the other end of the elastic sheet is fixedly connected to the end of the movable ring.

[0016] Optionally, the steel wire 2 and the arc frame 4 are fixedly connected to two movable rings respectively, and the end of the traction steel wire 2 is fixedly connected to the top of the movable ring.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, through the auxiliary grading component, when the retractor is placed in the operating area, there is no need to replace the retractors of different levels in time according to the progress of the operation, which improves the work efficiency during the operation and saves the time of the staff to replace different types of retractors. At the same time, in the case of infrequent removal and replacement of the retractor, the retractor will always be in the operating area, so that the position of the retractor will not change, thereby ensuring that the field of view originally opened by the retractor is consistent with the subsequent one, avoiding the loss of field of view, and also reducing the situation of wound damage caused by multiple removal of the retractor, thereby improving the safety of the patient during surgery and postoperative recovery.

[0019] By providing the second arc frame, the first traction wire, the toggle block and the clamping plate, it is convenient to provide a sufficient field of view after the retractor is placed in the operating area, thereby improving the openness of the field of view during the operation. At the same time, it is convenient and quick during use, reducing the complexity of the staff frequently switching the field of view of the operating area during the operation.

[0020] By arranging arc frame three, arc frame four, traction wire two, control column, limit plate and support arc plate, the surgical field of view of the retractor center is effectively expanded, while the operating efficiency of the staff is also improved. In addition, the various components are effectively limited and fixed to improve the stability during the surgical operation and ultimately reduce the secondary injury of the retractor to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and to enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a schematic diagram of the side view of the stereoscopic structure of the graded retractor used for deep spinal surgery;

[0023] Figure 2 It is a schematic diagram of the stereoscopic structure of a graded retractor used for deep spinal surgery when viewed from above;

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the fixed column, the arc frame 1 and the toggle block;

[0025] Figure 4 It is a three-dimensional enlarged structural schematic diagram of the arc frame 2, the toggle block and the arc frame 4;

[0026] Figure 5 It is a three-dimensional enlarged structural schematic diagram of a fixed column, an arc frame 1 and an arc frame 2;

[0027] Figure 6 It is a three-dimensional enlarged structural schematic diagram of the arc frame 2, the steel wire 1 and the traction steel wire 1;

[0028] Figure 7 It is a three-dimensional enlarged structural schematic diagram of the support frame, the second arc frame and the first steel wire;

[0029] Figure 8 It is a three-dimensional enlarged structural diagram of the traction wire, the toggle block and the clamping plate;

[0030] Figure 9 It is a three-dimensional enlarged structural schematic diagram of steel wire 2, arc frame 4 and steel wire 3;

[0031] Figure 10 It is a three-dimensional enlarged structural diagram of the fixed ring, the movable ring and the elastic sheet;

[0032] Figure 11 It is a three-dimensional enlarged structural diagram of the arc frame 4, the traction wire 2 and the limit ring;

[0033] Figure 12 It is a three-dimensional enlarged structural diagram of the traction wire and the limit ring;

[0034] Figure 13 It is a three-dimensional enlarged structural schematic diagram of the traction steel wire 1 and the traction steel wire 2;

[0035] Figure 14 It is a schematic diagram of the three-dimensional enlarged structure of the limit ring and the control column;

[0036] Figure 15 It is a three-dimensional enlarged structural schematic diagram of the limit plate, the supporting arc plate and the weakened part.

[0037] Reference numerals:

[0038] 1. Puller; 2. Fixed column; 201. Fixed ring; 202. Movable ring; 203. Elastic sheet; 3. Arc frame 1; 4. Stabilizing plate; 401. Support frame; 402. Arc frame 2; 403. Steel wire 1; 404. Traction wire 1; 405. Toggle block; 406. Snap-on plate; 407. Adapter groove; 5. Arc frame 3; 501. Steel wire 2; 502. Arc frame 4; 503. Steel wire 3; 504. Traction wire 2; 505. Limiting ring; 506. Control column; 507. Limiting plate; 508. Supporting arc plate; 509. Weakened portion.

[0039] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0040] The following will describe in detail a hierarchical retractor for deep spinal surgery provided by the present invention in conjunction with the accompanying drawings and specific embodiments. At the same time, it should be noted here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some well-known technologies, those skilled in the art can also adopt other alternative methods for implementation; moreover, the accompanying drawings are only for more specifically describing the embodiments and are not intended to specifically limit the present invention.

[0041] It should be noted that in the specification, references to "an embodiment", "embodiments", "exemplary embodiments", "some embodiments", etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment includes such specific features, structures, or characteristics. Additionally, when combining embodiments to describe a specific feature, structure, or characteristic, implementing such feature, structure, or characteristic in combination with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the relevant art.

[0042] Generally, terms can be understood at least in part from their use in context. For example, at least in part depending on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or can be used to describe a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey a set of exclusive factors, but rather can alternatively, at least in part depending on the context, allow for the existence of other factors that may not be explicitly described.

[0043] It can be understood that the meanings of "on...", "above...", and "over..." in the present invention should be interpreted in the broadest manner, such that "on..." not only means "directly on" something, but also includes the meaning of being "on" something with intervening features or layers therebetween, and "above..." or "over..." not only means "above" or "over" something, but also can include the meaning of being "above" or "over" something with no intervening features or layers therebetween.

[0044] Furthermore, spatial relative terms such as "under...", "below...", "lower", "above...", "upper", etc. are used herein for convenience of description to describe the relationship of one element or feature to another or more elements or features, as shown in the accompanying drawings. The spatial relative terms are intended to cover different orientations in the use or operation of the device in addition to the orientation depicted in the drawings. The device may be oriented in other ways, and the spatial relative descriptive terms used herein can be similarly interpreted accordingly.

[0045] As Figures 1 to 15As shown in the figure, an embodiment of the present invention provides a hierarchical retractor for deep spinal surgery, including a retractor 1. A fixing column 2 is fixedly connected to the bottom end of the middle part of the retractor 1. An arc-shaped frame 1 is fixedly connected to the outer side of the fixing column 2. A stabilizing plate 4 is fixedly connected to the bottom of the retractor 1. The outer surface of the stabilizing plate 4 is attached to an arc-shaped frame 3 5; an auxiliary grading component, which is used to facilitate the use of the retractor 1 during the operation and ensure the vision of the surgical area. The auxiliary grading component is connected to the retractor 1. The retractor 1 and the fixing column 2 are existing structures and will not be elaborated too much. The side of the arc-shaped frame 1 is fixed on the outer side of the retractor 1, and the bottom end of the arc-shaped frame 1 is folded inward, with plastic steel fixed inside. The stabilizing plate 4 is fixed at the bottom end of the retractor 1. The middle part of the arc-shaped frame 3 5 is attached to the outer surface of the fixing column 2 and is made of flexible material.

[0046] Through the auxiliary grading component, when the retractor 1 is placed into the surgical area, there is no need to timely replace different-level retractors according to the progress of the operation, which improves the working efficiency during the operation, saves the time for the staff to replace different types of retractors. At the same time, without frequently removing and replacing the retractor, the retractor will always be in the surgical area, so that the position of the retractor will not change, thus ensuring that the vision originally opened by the retractor is consistent with the subsequent one, avoiding the loss of vision, and can also reduce the situation of wound injury caused by repeatedly taking the retractor, improving the safety of the patient during the operation and the postoperative recovery.

[0047] As Figure 10 shown, a fixing ring 201 is fixedly connected to the outer surface of the middle part of the fixing column 2. A movable ring 202 is installed on the surface of the fixing ring 201. An elastic piece 203 is fixedly connected to the end of the fixing ring 201. The fixing ring 201 is fixedly connected to the outer surface of the middle part of the fixing column 2, and half of the fixing ring 201 is opened as a groove. The movable ring 202 is clamped on the groove of the fixing ring 201, and the size of the movable ring 202 is the same as that of the groove of the fixing ring 201. The elastic piece 203 is made of plastic material. One end of the elastic piece 203 is fixed to the end of the fixing ring 201, and the other end is fixed to the end of the movable ring 202. It is worth mentioning that the fixing ring 201, the movable ring 202 and the elastic piece 203 are all two and are all fixed at the middle position of the fixing column 2, with a certain position left in the middle.

[0048] With the above structure, in the initial state, the movable ring 202 is clamped on the right side of the fixing ring 201 (as Figure 10 shown), and at this time, the elastic piece 203 is in an open state. When working, the movable ring 202 will rotate counterclockwise under the action of the pulling force. The movable ring 202 will move away from the position of the fixing ring 201 and approach the position of the elastic piece 203. When approaching, it will exert pressure on the elastic piece 203, and under the action of the pressure, the elastic piece 203 will deform after being squeezed, thus completing the change of the position of the movable ring 202.

[0049] like Figures 3 to 8 As shown, the auxiliary grading component includes a support frame 401 fixedly connected to the bottom end of the stabilizing plate 4, the bottom end of the support frame 401 is fixedly connected with an arc frame 2 402, the inner cavity of the bottom end of the arc frame 2 402 is fixedly connected with a steel wire 1 403, the top of the stabilizing plate 4 is fixedly connected with a traction steel wire 1 404, the end of the traction steel wire 1 404 is fixedly connected with a toggle block 405, the two sides of the toggle block 405 are fitted with a clamping plate 406, and the two sides of the toggle block 405 are provided with an adaption groove 407, the top of the support frame 401 is fixed to the middle of the bottom end of the stabilizing plate 4, and the middle part of the support frame 401 is hollow, the arc frame 2 402 is made of flexible material, and the inner center position is fixed to the bottom of the support frame 401, the bottom end of the arc frame 2 402 is folded inward, and the steel wire 1 403 is fixed to the arc The bottom end of the arc frame 402 can be slightly bent and deformed, one end of the traction wire 404 is fixed on the top of the stabilizing plate 4, and there are two stabilizing plates 4, the support frame 401, the arc frame 402 and the wire 403, so the traction wire 404 will be connected to the top of the two stabilizing plates 4, the other end of the traction wire 404 is fixed on the side of the toggle block 405, the bottom of the toggle block 405 is installed in the inner cavity of the retractor 1, and the toggle block 405 is designed in a "7" shape with a narrow top and a wide bottom. The clamping plate 406 is fixed in the inner cavity of the retractor 1, and the inner side of the clamping plate 406 is provided with a barb, and the barb is fitted with both sides of the toggle block 405, and the adapter groove 407 is opened on both sides of the toggle block 405, and the size of the adapter groove 407 is consistent with the size of the barb of the clamping plate 406.

[0050] With the above structure, when expanding the field of view of the surgical area of the patient's spine, the initial state of the second arc-shaped frame 402 is relatively stable in cooperation with the shape of the retractor 1. During the process of starting to expand the retractor 1, the position of the second arc-shaped frame 402 is equivalent to the second layer in the skin, and the subcutaneous tissue is mainly fat. During the process of expanding the retractor 1, the field of view of the retractor 1 itself is limited. At this time, by pressing the top of the toggle block 405 backward, the bottom of the toggle block 405 starts to slide along the inner groove of the retractor 1. During the sliding process, the end of the first traction wire 404 fixed to the side of the toggle block 405 will be pulled. At this time, the entire first traction wire 404 will be pulled and move in the direction after the toggle block 405 is pressed. During the process of pulling the first traction wire 404, since the top of the stabilizing plate 4 is fixed by the first traction wire 404, the stabilizing plate 4 will also be driven to move vertically upward. At the same time, the bottom end of the stabilizing plate 4 is fixed to the support frame 401, and the bottom end of the support frame 401 is also fixed to the second arc-shaped frame 402 and the first wire 403. Therefore, during the process of the stabilizing plate 4 moving vertically upward, the support frame 401, the second arc-shaped frame 402 and the first wire 403 will also move along with the movement of the stabilizing plate 4, thereby changing the position of the second arc-shaped frame 402 to adjust the field of view in the surgical area. Before putting the retractor 1 into the surgical area, the overall shape and orientation of the second arc-shaped frame 402 can be slightly adjusted through the first wire 403, which is convenient for providing sufficient field of view after putting the retractor 1 into the surgical area, thereby improving the openness of the field of view during the operation. At the same time, during the use process, it is convenient and fast, reducing the complexity of the staff frequently switching the field of view of the surgical area during the operation.

[0051] Among them, after the movement is completed, the toggle block 405 is hooked by the barb inside the clamping plate 406 to prevent the toggle block 405 from rebounding in the original direction. And the clamping plate 406 and the matching slot 407 can better limit and fix the toggle block 405, so that it is not necessary to hold and fix it for a long time when expanding the field of view, improving the overall comfort of the staff and the efficiency during work. After the operation is completed, the clamping plate 406 is pushed apart to both sides by hand. At this time, the other side of the clamping plate 406 where the barb is located will tightly fit in the inner groove of the retractor 1, thereby moving out the toggle block 405. After moving out, it returns to normal. At this time, the stabilizing plate 4, the support frame 401, the second arc-shaped frame 402 and the first wire 403 also return to the initial state.

[0052] Such as Figures 9 to 15As shown, a second steel wire 501 is fixedly connected to the inner cavity at the bottom end of the arc-shaped frame three 5. An arc-shaped frame four 502 is fixedly connected to the outer surface of the movable ring 202. A third steel wire 503 is fixedly connected to the inner cavity at the bottom end of the arc-shaped frame four 502. A second traction steel wire 504 is fixedly connected to the top end of the movable ring 202. A limiting ring 505 is fixedly connected to the outer surface of the fixed column 2 close to the elastic piece 203. The end of the second traction steel wire 504 is fixedly connected to a control column 506. Limiting plates 507 are fixedly connected to both sides of the control column 506. Support arc-shaped plates 508 are fixedly connected to both sides of the control column 506 close to the top of the limiting plates 507. A weakening part 509 is formed in the middle of the support arc-shaped plate 508. The second steel wire 501 is fixed inside the fold at the bottom end of the arc-shaped frame three 5. The middle part of the arc-shaped frame four 502 is fixed to the outer surface of the movable ring 202 and is made of a flexible material. The third steel wire 503 is fixed inside the fold at the bottom end of the arc-shaped frame four 502. One end of the second traction steel wire 504 is fixed to the top of the movable ring 202 and there are two of them. The limiting ring 505 is fixed to the bottom end of the retractor 1 and is made of plastic. And the second traction steel wire 504 passes through the limiting ring 505. The side of the control column 506 is fixed to the other end of the second traction steel wire 504. And the control column 506 slides horizontally in the inner groove of the retractor 1. There are two control columns 506. The limiting plates 507 are fixed to both sides of the control column 506 and are symmetrically distributed and there are four of them. The limiting plates 507 are also slidably connected to the inner groove of the retractor 1. The support arc-shaped plates 508 are fixed to both sides of the control column 506 and are located above the limiting plates 507 and are symmetrically distributed and there are four of them. The material is plastic.

[0053] With the above structure, after the retractor 1 is placed in the surgical area of the patient, when the field of view needs to be opened, at this time, the arc-shaped frame one 3 has opened the field of view of the first layer of skin, and the arc-shaped frame two 402 has opened the second layer of subcutaneous tissue. And the arc-shaped frame three 5 and the arc-shaped frame four 502 are currently holding against the third layer of fascia and the fourth layer of muscle. Since the overall height of the arc-shaped frame three 5 and the arc-shaped frame four 502 is greater than the tissues inside the human skin, the arc-shaped frame three 5 and the arc-shaped frame four 502 can just hold against the third layer and the fourth layer. And after holding against, by changing the positions of the arc-shaped frame three 5 and the arc-shaped frame four 502, the surgical field of view can be further enlarged. Specifically, the control column 506 is vertically lifted, so that the control column 506 moves upward away from the top of the retractor 1. During the process of the control column 506 moving vertically upward, the second traction steel wire 504 will be pulled by the control column 506 to move along. Furthermore, the movable ring 202 fixedly connected to the second traction steel wire 504 will also rotate, and rotate counterclockwise along the trajectory of the slot of the fixed ring 201.

[0054] When the movable ring 202 rotates, the elastic piece 203 fixed at the end of the movable ring 202 will be deformed and extruded. Moreover, the larger the rotation angle of the movable ring 202, the more obvious the extrusion degree of the elastic piece 203. During the pulling process of the second traction wire 504, the second traction wire 504 will have an unstable offset. Placing the second traction wire 504 inside the limit ring 505 can further limit the second traction wire 504. In the overall trajectory of the second traction wire 504, the positions where the limit ring 505 needs to limit are mainly on the surface of the fixed column 2 and the bottom end of the puller 1, which can limit the second traction wire 504 and prevent the loss of pulling force. At this time, when the control column 506 is pulled to the maximum value and the bottom of the support arc plate 508 directly touches the top of the puller 1, it indicates that the pulling process has ended. At this time, the limit of the control column 506 mainly depends on the support of the support arc plate 508. In the state where the support arc plate 508 abuts against the top of the puller 1, it can prevent the control column 506 from being pulled downward due to gravity and the reaction force of the second traction wire 504. And by cooperating with the friction force of the limit plate 507 on the inner groove wall of the puller 1, the stability of the control column 506 in the inner groove of the puller 1 is improved. After fixing the position of the control column 506, the movable ring 202 rotates from the original rightmost side to the left side, as Figure 10 shown; the elastic piece 203 is deformed and extruded, and the arc-shaped frame four 502 fixed on the surface of the movable ring 202 also changes its position as the movable ring 202 rotates. By rotating the movable ring 202, the position of the arc-shaped frame four 502 is changed, so that the position of the arc-shaped frame four 502 can be changed from the original inward approach, as Figure 1 the shape of the puller 1 in the figure becomes outwardly open, thereby increasing the surgical field of view in the central area.

[0055] After the operation is completed, the fingers press the supporting arc plates 508 on both sides. Under the action of the weakened portion 509, the side of the supporting arc plates 508 close to the side of the control column 506 can be tightly fitted between the two sides of the control column 506. At this time, the bottom end of the supporting arc plates 508 no longer contacts the top of the retractor 1, and the control column 506 can be moved vertically downward with the limit plate 507 and the supporting arc plates 508. In conjunction with the elastic sheet 203, when the limit is cancelled, the elastic sheet 203 will rebound to its original position. During the rebound of the elastic sheet 203, the traction wire 504 will be pulled, and the traction wire 504 will be pulled downward. 4 will make the control column 506 descend better, and under the action of the limiting plate 507, the control column 506 will not fall off directly from the inner groove of the retractor 1, but directly make the bottom of the limiting plate 507 against the inner groove of the retractor 1, and further the rebound and reset of the movable ring 202 will drive the arc frame 502 fixed on the surface of the movable ring 202 to rebound and reset, thereby completing the overall operation process, effectively expanding the surgical field of view of the center of the retractor 1, and also improving the operating efficiency of the staff, and the effective limit fixation between the various components improves the stability during the surgical operation and reduces the secondary injury of the retractor 1 to the patient.

[0056] It is worth mentioning that the above structure is the specific operation process of the arc frame four 502 and its related components, and the operation process of the related components composed of the arc frame three 5 and the related components composed of the arc frame four 502 are consistent. The only difference is that the overall size of the arc frame three 5 is smaller than the overall size of the arc frame four 502. The arc frame three 5 is used to support the third layer of fascia structure. Since the fascia is distributed densely and widely, there is no need to use a large-area arc frame three 5 to adapt to the position of the fascia. Therefore, the specific process of the related components composed of the arc frame three 5 is not repeated. Among them, the arc frame one 3, the arc frame two 402, the arc frame three 5 and the arc frame four 502 are all made of flexible materials, directly contact and squeeze the skin structure, and the bottom ends are folded inwards. Plasticity and micro-deformation are performed through plastic steel wire, steel wire one 403, steel wire two 501 and steel wire three 503, which improves the overall plasticity while also having a certain strength, thereby improving the overall adaptability and practicality of the device.

[0057] The workflow of the technical solution provided by the present invention is as follows:

[0058] In the process of not performing local operations, the retractor 1 can be regarded as an integrated device and can be used as a normal traction device, and other components can serve the functional effects of auxiliary adaptation.

[0059] In the initial state, the movable ring 202 is clamped on the right side of the fixed ring 201 (such as Figure 10), at this time, the elastic sheet 203 is in an open state. When working, the movable ring 202 will rotate counterclockwise under the action of the pulling force, and the movable ring 202 will move away from the position of the fixed ring 201 and approach the position of the elastic sheet 203. When approaching, the elastic sheet 203 will be squeezed, and under the action of the squeezing, the elastic sheet 203 will be deformed after squeezing, thereby completing the position change of the movable ring 202.

[0060] When expanding the visual field of the patient's spinal surgical area, the initial state of the arc frame 2 402 is relatively stable in accordance with the shape of the retractor 1. In the process of starting to expand the retractor 1, the position of the arc frame 2 402 is equivalent to the second layer of the skin, and the subcutaneous tissue is mainly fat. In the process of expanding the retractor 1, the visual field of the retractor 1 itself is limited. At this time, the top of the toggle block 405 can be pressed backwards to make the bottom of the toggle block 405 start to slide along the inner groove of the retractor 1. During the sliding process, the end of the traction wire 1 404 fixed to the side of the toggle block 405 will be pulled, and the entire traction wire 1 404 will be pulled. 04 will be pulled and move in the direction after the toggle block 405 is pressed. During the pulling process of the traction wire 404, the stabilizing plate 4 will also be driven to move vertically upwards because the traction wire 404 is fixed on the top. At the same time, the bottom end of the stabilizing plate 4 is also fixed with the support frame 401, and the bottom end of the support frame 401 is also fixed with the arc frame 2 402 and the steel wire 1 403. Therefore, during the vertical upward movement of the stabilizing plate 4, the support frame 401, the arc frame 2 402 and the steel wire 1 403 will also move with the movement of the stabilizing plate 4, thereby changing the position of the arc frame 2 402 to adjust the field of view in the surgical area.

[0061] Before the retractor 1 is placed into the operating area, the overall shape and direction of the arc frame 2 402 can be slightly adjusted by the steel wire 1 403, so as to provide a sufficient field of view after the retractor 1 is placed into the operating area, thereby improving the openness of the field of view during the operation. At the same time, it is convenient and quick during use, reducing the complexity of the staff frequently switching the field of view of the operating area during the operation.

[0062] Among them, after the movement is completed, the toggle block 405 is hooked by the inner hook of the clamping plate 406 to prevent the toggle block 405 from rebounding to the original direction, and the clamping plate 406 cooperates with the matching groove 407 to better limit and fix the toggle block 405, so that there is no need to hold it for a long time when expanding the field of vision, thereby improving the overall comfort and work efficiency of the staff. After the operation is completed, the clamping plate 406 is stretched to both sides by hand. At this time, the clamping plate 406 is on the other side of the hook and will fit tightly in the inner groove of the retractor 1, thereby moving the toggle block 405 out and returning to normal after being moved out. At this time, the stabilizing plate 4, the support frame 401, the arc frame 2 402 and the steel wire 1 403 also return to the initial state.

[0063] After the retractor 1 is placed into the patient's surgical area, the field of vision needs to be opened. At this time, the arc frame 1 3 has opened the field of vision of the first layer of skin, the arc frame 2 402 has opened the subcutaneous tissue of the second layer, and the arc frame 3 5 and the arc frame 4 502 currently support the fascia of the third layer and the muscle of the fourth layer. Since the overall height of the arc frame 3 5 and the arc frame 4 502 is greater than the tissue of the inner layer of human skin, the arc frame 3 5 and the arc frame 4 502 can only be in contact with the third layer and the fourth layer. After the operation, the surgical field of view can be further expanded by changing the positions of the arc frame three 5 and the arc frame four 502. Specifically, the control column 506 is lifted vertically to move upward away from the top of the retractor 1. During the vertical upward movement of the control column 506, the traction wire two 504 will be pulled by the control column 506 to follow the movement, and then the movable ring 202 fixedly connected to the traction wire two 504 will also rotate, and rotate counterclockwise along the trajectory of the groove of the fixed ring 201.

[0064] When the movable ring 202 rotates, the elastic sheet 203 fixed at the end of the movable ring 202 will be deformed and squeezed, and as the rotation angle of the movable ring 202 increases, the squeezing degree of the elastic sheet 203 is more obvious, and the traction wire 504 will cause unstable displacement during the pulling process. The traction wire 504 is placed into the limiting ring 505, which can further limit the traction wire 504. In the trajectory of the overall traction wire 504, the position where the limiting ring 505 needs to be limited is mainly on the surface of the fixed column 2 and the bottom end of the retractor 1, which can limit the traction wire 504 while preventing the pulling force. When the control column 506 is pulled to the maximum value, so that the bottom of the supporting arc plate 508 directly contacts the top of the retractor 1, it means that the pulling process has ended. At this time, the limit of the control column 506 is mainly supported by the supporting arc plate 508. When the supporting arc plate 508 is against the top of the retractor 1, the control column 506 can be prevented from being pulled downward due to gravity and the reaction force of the traction wire 504, and the friction force of the limiting plate 507 on the inner groove wall of the retractor 1 is combined to improve the stability of the control column 506 in the inner groove of the retractor 1. After the position of the control column 506 is fixed, the movable ring 202 is rotated from the original rightmost side to the left side. Figure 10 As shown; the elastic sheet 203 is deformed and squeezed, and the arc frame four 502 fixed on the surface of the movable ring 202 also changes position with the rotation of the movable ring 202. By rotating the movable ring 202, the position of the arc frame four 502 changes, so that the position of the arc frame four 502 can be moved from the original position to the inside, such as Figure 1 The shape of the retractor 1 in the center is changed to be open outward, thereby increasing the surgical field of view in the central area.

[0065] After the operation, press the supporting arc plates 508 on both sides with force. Under the action of the weakening part 509, the side of the supporting arc plate 508 close to the side of the control column 506 can be closely attached to both sides of the control column 506. At this time, the bottom end of the supporting arc plate 508 no longer abuts against the top of the retractor 1, and the control column 506 can be moved vertically downward with the limiting plate 507 and the supporting arc plate 508. And in cooperation with the elastic piece 203, in the state of canceling the limit, the elastic piece 203 will rebound to its original position. During the rebounding process of the elastic piece 203, it will pull the second traction wire 504, and the pulling of the second traction wire 504 will make the descending effect of the control column 506 better. And under the action of the limiting plate 507, the control column 506 will not directly fall off from the inner groove of the retractor 1, but directly make the bottom of the limiting plate 507 abut against the inner groove of the retractor 1. Further, the rebounding and resetting of the movable ring 202 will drive the fourth arc-shaped frame 502 fixed on the surface of the movable ring 202 to rebound and reset, thereby completing the overall operation process, effectively expanding the surgical field of view in the center of the retractor 1, improving the operation efficiency of the staff at the same time, and effectively limiting and fixing between each component, improving the stability during the surgical operation process, and reducing the secondary injury of the retractor 1 to the patient.

[0066] It is worth mentioning that the above structure is the specific operation process of the components related to the fourth arc-shaped frame 502, and the operation process of the components composed of the third arc-shaped frame 5 is the same as that of the components composed of the fourth arc-shaped frame 502. The only difference is that the overall size of the third arc-shaped frame 5 is smaller than the overall size of the fourth arc-shaped frame 502. Therefore, the specific process of the components composed of the third arc-shaped frame 5 will not be elaborated here. The first arc-shaped frame 3, the second arc-shaped frame 402, the third arc-shaped frame 5 and the fourth arc-shaped frame 502 are all made of flexible materials, directly contacting and squeezing the skin structure, and the bottom ends are all folded inward. Through the plastic wire, the first wire 403, the second wire 501 and the third wire 503 for plastic shaping and micro-deformation, while improving the overall plasticity, it also has a certain strength, improving the overall adaptability and practicability of the device.

[0067] The present invention covers any substitutions, modifications, equivalent methods and solutions made within the spirit and scope of the present invention. In order to enable the public to have a thorough understanding of the present invention, specific details are described in detail in the following preferred embodiments of the present invention. However, those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion to the essence of the present invention, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0068] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A graded retractor for deep spinal surgery, characterized in that: It comprises a retractor, wherein the bottom end of the middle part of the retractor is fixedly connected with a fixing column, the outer side of the fixing column is fixedly connected with an arc frame 1, the bottom of the retractor is fixedly connected with a stabilizing plate, and the outer surface of the stabilizing plate is attached with an arc frame 3; An auxiliary grading component is used to facilitate the use of the retractor during surgery and ensure the field of view of the surgical area. The auxiliary grading component is connected to the retractor.

2. The graded retractor for deep spinal surgery according to claim 1, characterized in that: The auxiliary grading component includes a support frame fixedly connected to the bottom end of the stabilizing plate, the bottom end of the support frame is fixedly connected to an arc frame 2, the inner cavity of the bottom end of the arc frame 2 is fixedly connected to a steel wire 1, and the top of the stabilizing plate is fixedly connected to a traction steel wire 1.

3. The graded retractor for deep spinal surgery according to claim 2, characterized in that: The end of the traction steel wire is fixedly connected with a toggle block, the two sides of the toggle block are fitted with clamping plates, and the two sides of the toggle block are provided with adaption grooves.

4. The graded retractor for deep spinal surgery according to claim 1, characterized in that: A fixing ring is fixedly connected to the outer surface of the middle part of the fixing column, a movable ring is installed on the surface of the fixing ring, and an elastic sheet is fixedly connected to the end of the fixing ring.

5. The graded retractor for deep spinal surgery according to claim 1, characterized in that: The inner cavity at the bottom end of the arc frame three is fixedly connected with steel wire two, the outer surface of the movable ring is fixedly connected with arc frame four, the inner cavity at the bottom end of the arc frame four is fixedly connected with steel wire three, the top of the movable ring is fixedly connected with traction steel wire two, and the outer surface of the fixed column close to the elastic sheet is fixedly connected with a limiting ring.

6. The step-by-step retractor for deep spinal surgery according to claim 5, characterized in that: The end of the second traction wire is fixedly connected with a control column, and both sides of the control column are fixedly connected with a limit plate. Both sides of the control column close to the top of the limit plate are fixedly connected with a supporting arc plate, and a weakened portion is opened in the middle of the supporting arc plate.

7. The graded retractor for deep spinal surgery according to claim 2, characterized in that: The middle part of the support frame is hollowed out, and the top end of the support frame is fixedly connected to the center position of the bottom end of the stabilizing plate, and the bottom end of the support frame is fixedly connected to the middle part of the second arc frame.

8. The step-by-step retractor for deep spinal surgery according to claim 3, characterized in that: The toggle block is designed in a "7" shape that is narrow at the top and wide at the bottom. The two sides of its bottom end are installed in the inner cavity of the retractor. The inner side of the clip-on plate is designed with a barb, and the size of the adapter groove is consistent with the size of the barb on the inner side of the clip-on plate. The end of the clip-on plate away from the toggle block is fixedly connected to the inner cavity of the retractor.

9. The step-by-step retractor for deep spinal surgery according to claim 4, characterized in that: There are two fixed rings and they are fixedly connected to the outer surface of the middle part of the fixed column, and half of the fixed ring is designed to be slotted. The movable ring is clamped in the slotted position of the fixed ring and fits each other. One end of the elastic sheet is fixedly connected to one end of the fixed ring, and the other end of the elastic sheet is fixedly connected to the end of the movable ring.

10. The step-by-step retractor for deep spinal surgery according to claim 5, characterized in that: The second steel wire and the fourth arc frame are respectively fixedly connected to two movable rings, and the end of the second traction steel wire is fixedly connected to the top of the movable ring.

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