A graded retractor for deep spinal surgery

Abstract

The present invention provides a graded retractor for deep spinal surgery, belonging to the technical field of retractors for spinal surgery. It comprises a retractor, wherein the bottom end of the middle portion of the retractor is fixedly connected to a fixed column, and the outer side of the fixed column is fixedly connected to an arc-shaped frame; an auxiliary grading component, wherein the auxiliary grading component is used to facilitate the use of the retractor during surgery and ensure the field of view of the surgical area, and the auxiliary grading component is connected to the retractor. Through the auxiliary grading component, the present invention does not need to replace retractors of different levels in a timely manner according to the progress of the surgery, thereby improving the work efficiency during surgery and saving the time of staff in replacing different types of retractors. The retractor will always be in the surgical area, so that the position of the retractor does not change, thereby ensuring the field of view originally opened by the retractor and avoiding the loss of field of view. It can also reduce the situation of wound damage caused by taking the retractor multiple times, thereby improving the safety of the patient during surgery and postoperative recovery.

Description

Technical Field

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

[0002] A spinal surgery traction device is a medical device commonly used in spinal surgery. It is mainly used to pull the soft tissue of the spine during surgery to increase the operating space and improve the accessibility and visibility of the surgical site.

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

[0004] Therefore, the present application provides a graduated retractor for deep spinal surgery to meet the needs. 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 each layer of structure to enter the interior, the opening degree of the retractor will be changed according to the looseness of the structure in each layer, and the retractor may even be taken out first, the opening degree of the retractor will be manually adjusted, and then the retractor will be placed in the original position again. However, this will easily lose the previously selected field of view, and the removed retractor will cause the originally expanded field of view to change, and the secondary traction will cause additional damage, which will have a certain impact on the patient and the postoperative recovery situation.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A grading retractor for deep spinal surgery comprises a retractor, wherein the bottom end of the middle portion of the retractor is fixedly connected to a fixing column, the outer side of the fixing column is fixedly connected to an arc frame 1, the bottom of the retractor is fixedly connected to a stabilizing plate, the outer surface of the stabilizing plate is fitted with an arc frame 3; an auxiliary grading component, wherein the auxiliary grading component is used to facilitate the use of the retractor during surgery 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, and clamping plates are attached to both sides of the toggle block, and adaptation grooves are provided on both sides of the toggle block.

[0010] Optionally, a fixing ring is fixedly connected to the outer surface of the middle portion 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 of 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 of 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 provided 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 "" that is narrow at the top and wide at the bottom, and both sides of its bottom end are installed in the inner cavity of the retractor. A barb is designed on the inner side of the clip-on plate, 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 both fixedly connected to the outer surface of the middle part of the fixed column, and half of the fixing ring is slotted. The movable ring is clamped in the slotted position of the fixing ring and fits together. 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 second steel wire and the fourth arc-shaped frame are fixedly connected to two movable rings respectively, and the end of the second traction steel wire 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, if the retractor is not frequently removed and replaced, 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 setting up 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, and the operating efficiency of the staff is also improved. In addition, the various components are effectively limited and fixed, which improves the stability during the surgical operation and ultimately reduces the secondary damage 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 one skilled in the art to make and use the invention.

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

[0023] Figure 2 This is a schematic diagram of the three-dimensional structure of a graded retractor used for deep spinal surgery 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 schematic diagram of the three-dimensional enlarged structure of the arc frame 2, the toggle block and the arc frame 4;

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

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

[0028] Figure 7 It is a schematic diagram of the three-dimensional enlarged structure of the support frame, the second curved 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 schematic diagram of the three-dimensional enlarged structure 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, movable ring and elastic sheet;

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

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

[0034] Figure 13 It is a schematic diagram of the three-dimensional enlarged structure of the traction wire 1 and the traction 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 schematic diagram of the three-dimensional enlarged structure of the limiting plate, supporting arc plate and 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 describes in detail a graded retractor for deep spinal surgery provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for known techniques. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0041] It should be noted that references in the specification to "one embodiment," "an embodiment," "exemplary embodiments," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not necessarily every embodiment will include such specific features, structures, or characteristics. Furthermore, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

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

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

[0044] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0045] like Figures 1 to 15As shown, an embodiment of the present invention provides a graded retractor for deep spinal surgery, comprising a retractor 1, wherein the bottom end of the middle portion of the retractor 1 is fixedly connected to a fixed column 2, the outer side of the fixed column 2 is fixedly connected to an arc frame 3, the bottom of the retractor 1 is fixedly connected to a stabilizing plate 4, the outer surface of the stabilizing plate 4 is fitted with an arc frame 3 5; an auxiliary grading component, the auxiliary grading component is used to facilitate the use of the retractor 1 during surgery and ensure the field of view of the surgical area, the auxiliary grading component is connected to the retractor 1, the retractor 1 and the fixed column 2 are existing structures, and no further details will be given. The side of the arc frame 3 is fixed on the outer side of the retractor 1, and the bottom end of the arc frame 3 is folded inward, with a plastic steel wire fixed inside, the stabilizing plate 4 is fixed to the bottom end of the retractor 1, and the middle part of the arc frame 3 5 is fitted to the outer surface of the fixed column 2, and is made of a flexible material.

[0046] Through the auxiliary grading component, when the retractor 1 is placed in the operating area, there is no need to replace 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, if the retractor is not frequently removed and replaced, 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.

[0047] like Figure 10 As 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, and an elastic sheet 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 consistent with the size of the groove of the fixed ring 201. The elastic sheet 203 is made of plastic. One end of the elastic sheet 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 there are two fixing rings 201, movable rings 202 and elastic sheets 203, and they are all fixed in the middle position of the fixed column 2, leaving a certain position in the middle.

[0048] Through the above structure, 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 the 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.

[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 to an arc frame 2 402, the inner cavity of the bottom end of the arc frame 2 402 is fixedly connected to a steel wire 1 403, the top of the stabilizing plate 4 is fixedly connected to a traction steel wire 1 404, the end of the traction steel wire 1 404 is fixedly connected to a toggle block 405, both sides of the toggle block 405 are fitted with a snap-on plate 406, and both sides of the toggle block 405 are provided with an adaptation 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-shaped frame 2 402 can be slightly bent and deformed, and one end of the traction wire 1 404 is fixed on the top of the stabilizing plate 4, and there are two stabilizing plates 4, the support frame 401, the arc-shaped frame 2 402 and the wire 1 403, so the traction wire 1 404 will be connected to the top of the two stabilizing plates 4, and the other end of the traction wire 1 404 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 clip-on plate 406 is fixed in the inner cavity of the retractor 1, and a barb is provided on the inner side of the clip-on plate 406, and the barb is fitted with both sides of the toggle block 405. 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 clip-on plate 406.

[0050] Through the above structure, when the field of view of the patient's spinal surgical area is expanded, 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 stretch 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 stretching the retractor 1, the field of view of the retractor 1 itself is limited. At this time, the top of the toggle block 405 can be pressed backward to make the bottom of the toggle block 405 start to slide along the inner groove of the retractor 1. In the process of sliding, the end of the traction wire 1 404 fixed to the side of the toggle block 405 will be pulled. At this time, the entire traction wire 1 404 will be pulled and move in the direction after the toggle block 405 is pressed. In the process of the traction wire 1 404 being pulled, the stabilizing plate 4 has the traction wire 1 404 on the top. The stabilizing plate 4 is fixed, so 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 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, in the process of the stabilizing plate 4 moving vertically upward, 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, which is used to adjust the field of view in the operating area. Before the retractor 1 is placed in 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 sufficient field of view after the retractor 1 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 in use, which reduces the complexity of the staff frequently switching the field of view of the operating area during the operation.

[0051] Among them, after the movement is completed, the toggle block 405 is hooked by the hook on the inner side of the clamping plate 406, preventing 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 view, 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 moving 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.

[0052] like Figures 9 to 15As shown, the inner cavity at the bottom end of the arc frame 3 5 is fixedly connected with the steel wire 2 501, the outer surface of the movable ring 202 is fixedly connected with the arc frame 4 502, the inner cavity at the bottom end of the arc frame 4 502 is fixedly connected with the steel wire 3 503, the top of the movable ring 202 is fixedly connected with the traction steel wire 2 504, the outer surface of the fixed column 2 close to the elastic sheet 203 is fixedly connected with the limit ring 505, the end of the traction steel wire 2 504 is fixedly connected with the control column 506, the two sides of the control column 506 are fixedly connected with the limit plate 507, the two sides of the control column 506 close to the top of the limit plate 507 are fixedly connected with the support arc plate 508, the middle part of the support arc plate 508 is provided with a weakened part 509, the steel wire 2 501 is fixed in the fold at the bottom end of the arc frame 3 5, the middle part of the arc frame 4 502 is fixed to the outer surface of the movable ring 202 The surface is made of flexible material. Steel wire three 503 is fixed in the fold at the bottom end of arc frame four 502. One end of traction steel wire two 504 is fixed to the top of movable ring 202. There are two of them. Limiting ring 505 is fixed to the bottom end of puller 1. It is made of plastic material. Pulling steel wire two 504 passes through limiting ring 505. The side of control column 506 is fixed to the other end of traction steel wire two 504, and control column 506 slides horizontally in the inner groove of puller 1. There are two control columns 506. Limiting plates 507 are fixed on both sides of control column 506 and are symmetrically distributed. There are four of them. Limiting plates 507 are also slidably connected to the inner groove of puller 1. Supporting arc plates 508 are fixed on both sides of support arc plates 508 and are located at the upper end of limiting plates 507. They are symmetrically distributed, four of them are made of plastic.

[0053] With the above structure, after the retractor 1 is placed in the patient's surgical area, it is necessary to open the field of vision. At this time, the arc frame 1 3 has already opened the field of vision of the first layer of skin, the arc frame 2 402 has already 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 contact the position of the third layer and the fourth layer. After the collision, 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 so that the control column 506 moves 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 move with it, and then the movable ring 202 to which the traction wire two 504 is fixed 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 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 will be more obvious, and the traction wire 2 504 will cause unstable deviation during the pulling process. The traction wire 2 504 is placed inside the limiting ring 505, which can further limit the traction wire 2 504. In the trajectory of the entire traction wire 2 504, 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 2 504 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, it can prevent the control column 506 from being pulled downward due to gravity and the reaction force of the traction wire 504, and cooperate with the friction force of the limiting plate 507 on the inner groove wall of the retractor 1 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 to 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 inward, as shown Figure 1 The shape of the retractor 1 in the center is changed to be open outward, thereby increasing the surgical field of view of 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 plate 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 plate 508 no longer conflicts with 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 plate 508. In conjunction with the elastic sheet 203, when the limit is canceled, the elastic sheet 203 will rebound to its original position. During the rebound process of the elastic sheet 203, it will pull the traction wire 2 504, and the traction wire 2 50 4 will make the control column 506 descend more effectively, and under the action of the limit plate 507, the control column 506 will not fall off directly from the inner groove of the retractor 1, but will directly make the bottom of the limit plate 507 rest 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 damage of the retractor 1 to the patient.

[0056] It is worth mentioning that the above structure is the specific operating process of the arc frame four 502 and its related components, and the operating process of the related components composed of the arc frame three 5 is the same as the related components composed of the arc frame four 502. 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 relatively 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 described in detail. 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 inward. 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 as auxiliary and adaptive functional effects.

[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 the 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 field of view 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 stretch 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 stretching the retractor 1, the field of view of the retractor 1 itself is limited. At this time, the top of the toggle block 405 can be pressed backward 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. At this time, the entire traction wire 1 404 is pulled. 04 will be pulled and move in the direction after the toggle block 405 is pressed. During the process of the traction wire 404 being pulled, the stabilizing plate 4 is fixed with the traction wire 1 404 on the top, so 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 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 process of the stabilizing plate 4 moving vertically upward, 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, which is used 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 hook on the inner side of the clamping plate 406, preventing 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 view, 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 moving 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 and fourth layers, and when supporting 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 so that the control column 506 moves 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 move along, 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 slot 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 will be more obvious, and the traction wire 2 504 will cause unstable deviation during the pulling process. The traction wire 2 504 is placed inside the limiting ring 505, which can further limit the traction wire 2 504. In the trajectory of the entire traction wire 2 504, 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 2 504 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, it can prevent the control column 506 from being pulled downward due to gravity and the reaction force of the traction wire 504, and cooperate with the friction force of the limiting plate 507 on the inner groove wall of the retractor 1 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 to 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 inward, as shown Figure 1 The shape of the retractor 1 in the center is changed to be open outward, thereby increasing the surgical field of view of the central area.

[0065] 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 plate 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 plate 508 no longer conflicts with 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 plate 508. In conjunction with the elastic sheet 203, when the limit is canceled, the elastic sheet 203 will rebound to its original position. During the rebound process of the elastic sheet 203, it will pull the traction wire 2 504, and the traction wire 2 50 4 will make the control column 506 descend more effectively, and under the action of the limit plate 507, the control column 506 will not fall off directly from the inner groove of the retractor 1, but will directly make the bottom of the limit plate 507 rest 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 damage 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 arc frame four 502, and the operation process of the related components composed of the arc frame three 5 is the same as the related components composed of the arc frame four 502. 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. 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 inward. 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.

[0067] The present invention encompasses any alternatives, modifications, equivalents, and solutions that fall within the spirit and scope of the present invention. To provide a thorough understanding of the present invention, specific details are described in detail below in connection with the preferred embodiments of the present invention, but those skilled in the art will be able to fully understand the present invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of the present invention, well-known methods, processes, procedures, components, and circuits have not been described in detail.

[0068] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A graded retractor for deep spinal surgery, characterized in that: The retractor comprises a retractor, wherein the bottom end of the middle portion of the retractor is fixedly connected to a fixing column, the outer side of the fixing column is fixedly connected to an arc frame 1, the bottom of the retractor is fixedly connected to a stabilizing plate, and the outer surface of the stabilizing plate is attached to an arc frame 3; An auxiliary grading component, which is used to facilitate the use of the retractor during surgery and ensure the field of view of the surgical area, and is connected to the retractor; 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 the second arc frame, the inner cavity of the bottom end of the second arc frame is fixedly connected to the first steel wire, and the top of the stabilizing plate is fixedly connected to the first traction steel wire; The end of the traction wire is fixedly connected to a toggle block, and the two sides of the toggle block are fitted with a clamping plate, and the two sides of the toggle block are provided with an adaption groove; 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; The toggle block is designed in the shape of a "7" 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.

2. 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 portion 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.

3. The graded retractor for deep spinal surgery according to claim 2, characterized in that: 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 outer surface of the fixed column close to the elastic sheet is fixedly connected to a limiting ring.

4. The graded retractor for deep spinal surgery according to claim 3, characterized in that: The end of the second traction wire is fixedly connected to a control column, both sides of the control column are fixedly connected to a limit plate, both sides of the control column near the top of the limit plate are fixedly connected to a supporting arc plate, and a weakened portion is provided in the middle of the supporting arc plate.

5. The graded retractor for deep spinal surgery according to claim 2, characterized in that: There are two fixed rings and they are both fixedly connected to the outer surface of the middle part of the fixed column, and half of the fixed ring is slotted. The movable ring is clamped in the slotted position of the fixed ring and adapts to 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.

6. The graded retractor for deep spinal surgery according to claim 3, 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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