A precise device for acquiring fascia lata

Abstract

This invention relates to the field of medical device technology, specifically to a precise fascia lata harvesting device, including a mounting base and a cutting assembly. The cutting assembly includes a fixed sleeve, a movable sleeve, a cutting blade, a telescopic rod, a driving component, and a cutting component. The fixed sleeve is fixedly connected to the mounting base, the driving component is mounted on the mounting base, the movable sleeve is connected to the mounting base via the driving component, the cutting blade is rotatably connected to the fixed sleeve, the telescopic rod is connected to the fixed sleeve, and the cutting component is mounted on the mounting base. When it is necessary to adjust the width of the harvested fascia lata, the driving component drives the movable sleeve to move, thereby changing the distance between the movable sleeve and the fixed sleeve. Simultaneously, during the movement of the movable sleeve, the cutting blade tilts, thereby changing the width of the fascia lata that the cutting blade can cut. This allows for convenient adjustment of the device's width, facilitating the precise harvesting of fascia lata grafts of different lengths and widths.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a device for precisely acquiring fascia lata. Background Technology

[0002] The fascia lata, located on the anterolateral aspect of the upper thigh, is the thickest fascia in the body. The lateral portion of the fascia lata, thickened and flattened by tendon fibers from the tensor fasciae latae, forms the iliotibial tract, which inserts downwards onto the lateral epicondyle of the tibia. The fascia lata is a regular, dense connective tissue with few cells, primarily consisting of fibroblasts with specific morphologies. It is strong, and due to its large surface area, harvesting a portion has minimal impact on the body. Its thickness makes it widely used clinically as a graft, for reconstruction of the supraspinatus tendon, Achilles tendon, shoulder joint capsule reconstruction, and abdominal hernia repair. Traditional precise harvesting devices for the fascia lata require a long incision on the lateral thigh, resulting in large incisions and significant scarring, causing pain and discomfort for the patient.

[0003] Existing technology CN102038540B discloses a plate-type fascia lata extractor. A ruler is fitted into grooves on both sides of a sliding sleeve. The sliding sleeve has markings for measuring the length of the fascia lata. One end of the sliding sleeve has a cutting edge. The ruler also has markings for measuring the length of the fascia lata. One end of the ruler has a circular hole, and the other end has a fascia lata guide sleeve. The guide sleeve has cutting edges on both sides of its end, and chamfers on the upper and lower parts of its end. A groove is located near the guide sleeve, with one side of the groove chamfered. This invention is sheet-shaped and thin. A small incision is made on the outer thigh skin to extract the deep fascia lata, effectively solving the problems of long incisions, scarring, and unsightly appearance. This invention can accurately extract the required length of fascia lata based on the markings on the ruler or sliding sleeve.

[0004] The above-mentioned device can avoid the problem of large incisions, but the width of the device cannot be adjusted, which makes it inconvenient to obtain fascia lata of different widths. Summary of the Invention

[0005] The purpose of this invention is to provide a precise fascia lata acquisition device, which solves the problem that the width of an existing plate-type fascia lata cutter cannot be adjusted, making it inconvenient to acquire fascia lata of different widths.

[0006] To achieve the above objectives, the present invention provides a device for precisely acquiring fascia lata, including a mounting base and a cutting assembly. The cutting assembly includes a fixed sleeve, a movable sleeve, a cutting blade, a telescopic rod, a driving component, and a cutting component. The fixed sleeve is fixedly connected to the mounting base and located on one side of the mounting base. The driving component is disposed on the mounting base. The movable sleeve is connected to the mounting base through the driving component. The cutting blade is rotatably connected to the fixed sleeve and connected to the movable sleeve, and is located between the fixed sleeve and the movable sleeve. The telescopic rod is connected to the fixed sleeve and connected to the movable sleeve, and is disposed on the fixed sleeve. The cutting component is disposed on the fixed sleeve and cuts the acquired fascia lata.

[0007] The movable sleeve has scale lines, which are disposed on the movable sleeve and located on one side of the movable sleeve.

[0008] The telescopic rod includes a fixed rod and a movable rod. The movable rod is fixedly connected to the movable sleeve and is located at one end of the movable sleeve. The fixed rod is fixedly connected to the fixed sleeve and slidably connected to the movable rod, and is sleeved on the movable rod.

[0009] The cutting blade includes a mounting plate, a sliding seat, and a blade. The sliding seat is slidably connected to the movable sleeve and is located inside the movable sleeve. The two ends of the mounting plate are rotatably connected to the sliding seat and the fixed sleeve, respectively, and the mounting plate is disposed on the fixed sleeve. The blade is fixedly connected to the mounting plate and is located on one side of the mounting plate.

[0010] The cutting blade further includes a limiting block, which is fixedly connected to the sliding seat and located on one side of the sliding seat; the movable sleeve has a limiting groove, which is disposed on the movable sleeve and located on the side of the movable sleeve close to the limiting block, and the limiting groove cooperates with the limiting block.

[0011] The blade has a chamfer, which is disposed on the blade and located on the side of the blade away from the mounting base.

[0012] The driving component includes a threaded rod, a threaded sleeve, and a knob. The threaded rod is rotatably connected to the mounting base and is located inside the mounting base. The threaded sleeve is threadedly connected to the threaded rod, fixedly connected to the movable sleeve, and slidably connected to the mounting base. The knob is fixedly connected to the threaded rod and is located at one end of the threaded rod.

[0013] The auxiliary threading assembly includes a threading tube, a mounting frame, and a driving component. The threading tube is fixedly connected to the movable sleeve and passes through the movable sleeve. The mounting frame is detachably connected to the movable sleeve and is disposed on the movable sleeve. The driving component is disposed on the mounting frame.

[0014] The housing is fixedly connected to the mounting bracket and disposed on the mounting bracket; the housing has a drive groove disposed inside the housing; the movable shaft is slidably connected to the housing and extends into the drive groove; the clamping seat is fixedly connected to the movable shaft and disposed on the movable shaft; the lifting seat is slidably connected to the housing and sleeved on the housing; the lifting rod is fixedly connected to the lifting seat and slidably connected to the clamping seat, and is located inside the lifting seat.

[0015] The rising groove is disposed inside the housing, and the falling groove is disposed inside the housing; the rising groove and the falling groove are connected.

[0016] This invention discloses a precise fascia lata harvesting device. In use, an incision is made on the lateral aspect of the patient's thigh, and the device is inserted. Insertion is stopped when the insertion length matches the required length of fascia lata. The mounting base is then pulled outwards, causing the fixing sleeve, the moving sleeve, and the cutting blade to move. During this outward movement, the cutting blade contacts the fascia lata, cutting it. Finally, the cutting component cuts the fascia lata, allowing it to be removed. When the width of the harvested fascia lata needs adjustment, the driving component moves the moving sleeve, changing the distance between the moving sleeve and the fixing sleeve. Simultaneously, during the movement of the moving sleeve, the cutting blade tilts, altering the width of the fascia lata that can be cut. This allows for convenient adjustment of the device's width, facilitating the precise harvesting of fascia lata grafts of different lengths and widths. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram of the overall structure of the device for accurately acquiring fascia lata according to the first embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the blade mounting structure according to the first embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the chamfer structure of the first embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the driving component according to the second embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the mounting structure of the outer shell according to the third embodiment of the present invention.

[0023] Figure 6 This is a schematic diagram of the structure of the elastic component according to the third embodiment of the present invention.

[0024] Figure 7 This is a schematic diagram of the auxiliary threading assembly according to the fourth embodiment of the present invention.

[0025] Figure 8 This is a schematic diagram of the installation structure of the threading tube according to the fourth embodiment of the present invention.

[0026] Figure 9 This is a schematic diagram of the installation structure of the clamping seat according to the fourth embodiment of the present invention.

[0027] Figure 10 This is a schematic diagram of the rising groove and falling groove according to the fourth embodiment of the present invention.

[0028] In the diagram: 101-Mounting base, 102-Cutting assembly, 103-Fixed sleeve, 104-Moving sleeve, 105-Cutting blade, 106-Telescopic rod, 107-Drive component, 108-Cutting component, 109-Scale line, 110-Fixed rod, 111-Moving rod, 112-Mounting plate, 113-Sliding seat, 114-Blade, 115-Limiting block, 117-Limiting groove, 118-Chamfer, 201-Threaded rod, 202-Threaded sleeve, 203-Knob, 30 1-Outer shell, 302-Sliding sleeve, 303-Cut-off blade, 304-Elastic component, 305-Spring, 306-Lifting plate, 307-Pressure rod, 401-Auxiliary threading assembly, 402-Threading tube, 403-Mounting bracket, 404-Drive component, 405-Shell, 406-Clamping seat, 407-Lifting seat, 408-Lifting rod, 409-Moving shaft, 410-Drive groove, 411-Rising groove, 412-Lowering groove, 413-Threading hole, 414-Sewing needle. Detailed Implementation

[0029] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0030] First embodiment:

[0031] Please see Figures 1 to 3 ,in Figure 1 This is a schematic diagram of the overall structure of the precise acquisition device for fascia lata. Figure 2 This is a schematic diagram of the blade mounting structure. Figure 3 This is a schematic diagram of the chamfered structure.

[0032] This invention provides a device for precisely acquiring fascia lata, comprising a mounting base 101 and a cutting assembly 102. The cutting assembly 102 includes a fixed sleeve 103, a movable sleeve 104, a cutting blade 105, a telescopic rod 106, a driving component 107, and a cutting component 108. The fixed sleeve 103 has graduation lines 109. The telescopic rod 106 includes a fixed rod 110 and a movable rod 111. The cutting blade 105 includes a mounting plate 112, a sliding seat 113, a blade 114, and a limiting block 115. The blade 114 has a chamfer 118. The moving sleeve 104 is driven to move by the driving member 107. At this time, the distance between the moving sleeve 104 and the fixed sleeve 103 changes, and the cutting blade 105 tilts, thereby enabling the cutting blade 105 to cut the width of the fascia lata, which is convenient for obtaining fascia lata of different widths. It can be understood that the above solution can be used to facilitate the acquisition of fascia lata of different widths, and can also be used to solve the problem of cutting fascia lata.

[0033] In this specific embodiment, the fixed sleeve 103 is fixedly connected to the mounting base 101 and located on one side of the mounting base 101. The driving member 107 is disposed on the mounting base 101. The movable sleeve 104 is connected to the mounting base 101 through the driving member 107. The cutting blade 105 is rotatably connected to the fixed sleeve 103 and connected to the movable sleeve 104, and is located between the fixed sleeve 103 and the movable sleeve 104. The telescopic rod 106 is connected to the fixed sleeve 103 and connected to the movable sleeve 104, and is disposed on the fixed sleeve 103. The cutting member 108 is disposed on the fixed sleeve 103 and cuts the fascia lata. One end of the cutting blade 105 rotates on the fixed sleeve 103, and the other end can slide on the movable sleeve 104. The telescopic rod 106 can extend and retract, thereby cooperating with the movement of the movable sleeve 104. The driving member 107 can drive the movable sleeve 104 to move. In use, an incision is made on the outer thigh of the patient, and the device is inserted. Insertion is stopped when the insertion length matches the required length of the fascia lata. At this point, the mounting base 101 is pulled outwards, thereby moving the fixing sleeve 103, the moving sleeve 104, and the cutting blade 105. During the outward movement of the cutting blade 105, its blade edge contacts the fascia lata, cutting it. Finally, the cutting member 108 cuts the fascia lata, thus obtaining the cut fascia lata. Remove; when it is necessary to adjust the width of the fascia lata to be cut, the moving sleeve 104 is driven to move by the driving member 107, thereby changing the distance between the moving sleeve 104 and the fixed sleeve 103. At the same time, during the movement of the moving sleeve 104, the cutting blade 105 tilts, thereby changing the width of the fascia lata that the cutting blade 105 can cut, so as to facilitate the adjustment of the width of the device and facilitate the accurate acquisition of fascia lata grafts of different lengths and widths.

[0034] The scale line 109 is disposed on the movable sleeve 104 and located on one side of the movable sleeve 104; the scale line 109 facilitates the determination of the insertion length of the device, thereby facilitating the control of the length of the obtained fascia lata.

[0035] Secondly, the movable rod 111 is fixedly connected to the movable sleeve 104 and located at one end of the movable sleeve 104; the fixed rod 110 is fixedly connected to the fixed sleeve 103 and slidably connected to the movable rod 111, and is sleeved on the movable rod 111; one side of the fixed rod 110 and the movable rod 111 is set as arc-shaped, which can avoid damage to other tissues during the insertion of the device; at the same time, through the slidable connection between the movable rod 111 and the fixed rod 110, when the movable sleeve 104 moves, the movable rod 111 can be retracted into the fixed rod 110, so that the length of the telescopic rod 106 changes with the distance between the fixed sleeve 103 and the movable sleeve 104.

[0036] Meanwhile, the sliding seat 113 is slidably connected to the movable sleeve 104 and is located inside the movable sleeve 104; both ends of the mounting plate 112 are rotatably connected to the sliding seat 113 and the fixed sleeve 103 respectively, and the mounting plate 112 is disposed on the fixed sleeve 103; the blade 114 is fixedly connected to the mounting plate 112 and is located on one side of the mounting plate 112; through the sliding of the sliding seat 113 and the movable sleeve 104, one end of the mounting plate 112 can slide and rotate on the movable sleeve 104, so that after the position of the movable sleeve 104 changes, the mounting plate 112 can tilt, thereby causing the blade 114 to tilt.

[0037] In addition, the limiting block 115 is fixedly connected to the sliding seat 113 and is located on one side of the sliding seat 113; the movable sleeve 104 has a limiting groove 117, which is disposed on the movable sleeve 104 and located on the side of the movable sleeve 104 close to the limiting block 115. The limiting groove 117 cooperates with the limiting block 115; there are two limiting grooves 117 and two limiting blocks 115, which are respectively located on the upper and lower sides of the sliding seat 113. The limiting groove 117 limits the limiting block 115, thereby limiting the sliding seat 113, so that the sliding seat 113 can only move along the length direction of the limiting groove 117, while preventing the sliding seat 113 from detaching from the movable sleeve 104 and affecting the cutting of the fascia lata.

[0038] Finally, the chamfer 118 is provided on the blade 114 and is located on the side of the blade 114 away from the mounting base 101; the chamfer 118 is located on the side of the blade 114 away from the cutting edge, so as to prevent the blade 114 from cutting other tissues during insertion.

[0039] When using the precise fascia lata acquisition device of this embodiment, an incision is made on the outer side of the patient's thigh, and the device is inserted. The insertion length is determined by the scale line 109. Insertion is stopped when the insertion length matches the required length of fascia lata. At this time, the mounting base 101 is pulled outward, thereby driving the fixed sleeve 103, the movable sleeve 104, and the cutting blade 105 to move outward. At this time, the blade of the cutting blade 105 can cut the fascia lata. Finally, the cutting member 108 cuts the fascia lata, thus completing the acquisition of the fascia lata. When it is necessary to acquire fascia lata of different widths, the driving member 107 drives the movable sleeve 104 to move, thereby adjusting the distance between the movable sleeve 104 and the fixed sleeve 103. At this time, the cutting blade 105 tilts, thereby changing the width of the fascia lata that the cutting blade 105 can cut, thus achieving the purpose of acquiring fascia lata of different widths.

[0040] Second embodiment:

[0041] Based on the first embodiment, please refer to Figure 4 , Figure 4 This is a schematic diagram of the structure of the driving component in the second embodiment. The driving component 107 in this embodiment includes a threaded rod 201, a threaded sleeve 202, and a knob 203.

[0042] In this specific embodiment, the threaded rod 201 is rotatably connected to the mounting base 101 and is located inside the mounting base 101; the threaded sleeve 202 is threadedly connected to the threaded rod 201, fixedly connected to the movable sleeve 104, and slidably connected to the mounting base 101; the knob 203 is fixedly connected to the threaded rod 201 and is located at one end of the threaded rod 201; by rotating the knob 203, the threaded rod 201 is driven to rotate, causing the threaded rod 201 to drive the threaded sleeve 202 to move, thereby causing the threaded sleeve 202 to drive the movable sleeve 104 to move, thus achieving the purpose of driving the movable sleeve 104 to move.

[0043] Third embodiment:

[0044] Based on the first embodiment, please refer to Figure 5 and Figure 6 , Figure 5 This is a schematic diagram of the mounting structure of the outer casing in the second embodiment. Figure 6 This is a schematic diagram of the structure of the elastic component in the second embodiment. The cutting component 108 in this embodiment includes a housing 301, a sliding sleeve 302, a cutting blade 303, and an elastic component 304. The elastic component 304 includes a spring 305, a lifting plate 306, and a pressure rod 307.

[0045] In this specific embodiment, the outer shell 301 is slidably connected to the fixed sleeve 103 and is located on one side of the fixed sleeve 103; the sliding sleeve 302 is slidably connected to the outer shell 301 and is located inside the outer shell 301; the elastic member 304 is disposed on the sliding sleeve 302; and the cutting blade 303 is connected to the sliding sleeve 302 through the elastic member 304.

[0046] The lifting plate 306 is slidably connected to the sliding sleeve 302 and fixedly connected to the cutting blade 303, and is located inside the sliding sleeve 302; the two ends of the spring 305 are respectively connected to the lifting plate 306 and the sliding sleeve 302, and the spring 305 is disposed on the sliding sleeve 302; the pressure rod 307 is fixedly connected to the lifting plate 306 and is located on the side of the lifting plate 306 away from the spring 305.

[0047] The outer casing 301 is slidably connected to the fixed sleeve 103 via a slider and a groove. Two springs 305 are provided, located on the front and rear sides of the lifting plate 306 respectively. The springs 305 drive the lifting plate 306 to move upward, thereby driving the cutting blade 303 to move upward, so that the cutting blade 303 is retracted into the outer casing 301, preventing the cutting blade 303 from cutting the patient during the insertion of the device. After the fascia lata is cut, the medical staff pushes the outer casing 301 to move the cutting blade 303 to the position of the cutting blade 105. Then, the pressure rod 307 is pressed, thereby driving the lifting plate 306 and the cutting blade 303 to descend, so that the cutting blade 303 extends and abuts against the cut fascia lata. Finally, the pressure rod 307 is slid to drive the lifting plate 306 and the cutting blade 303 to slide, so that the cutting blade 303 can cut the cut fascia lata, achieving the purpose of cutting the cut fascia lata.

[0048] Fourth embodiment:

[0049] Based on the first embodiment, please refer to Figures 7 to 10 , Figure 7 This is a schematic diagram of the auxiliary threading assembly in the fourth embodiment. Figure 8 This is a schematic diagram of the installation structure of the threading tube according to the fourth embodiment. Figure 9 This is a schematic diagram of the mounting structure of the clamping base in the fourth embodiment. Figure 10This is a schematic diagram of the rising groove and falling groove of the fourth embodiment. The precise acquisition device for fascia lata in this embodiment also includes an auxiliary threading assembly 401. The auxiliary threading assembly 401 includes a threading tube 402, a mounting bracket 403 and a driving component 404. The driving component 404 includes a housing 405, a clamping seat 406, a lifting seat 407, a lifting rod 408 and a moving shaft 409. The driving groove 410 includes a rising groove 411 and a falling groove 412.

[0050] In this specific embodiment, the threading tube 402 is fixedly connected to the movable sleeve 104 and passes through the movable sleeve 104; the mounting bracket 403 is detachably connected to the movable sleeve 104 and is disposed on the movable sleeve 104; the driving component 404 is disposed on the mounting bracket 403; the threading tube 402 has a threading hole 413, which passes through the threading tube 402. The threading hole 413 has a large opening at the top and a small opening at the bottom, and is funnel-shaped overall, which facilitates the threading operation by medical staff. The mounting bracket 403 is detachably connected to the movable sleeve 104 by means of buckles, bolts, etc.

[0051] The housing 405 is fixedly connected to the mounting bracket 403 and is disposed on the mounting bracket 403; the housing 405 has a drive groove 410 disposed inside the housing 405; the moving shaft 409 is slidably connected to the housing 405 and extends into the drive groove 410; the clamping seat 406 is fixedly connected to the moving shaft 409 and is disposed on the moving shaft 409; the lifting seat 407 is slidably connected to the housing 405 and is sleeved on the housing 405. The lifting rod 408 is fixedly connected to the lifting seat 407 and slidably connected to the clamping seat 406, and is located inside the lifting seat 407; two clamping seats 406 and two lifting rods 408 are provided, respectively located on both sides of the housing 405. Two moving shafts 409 are provided on one clamping seat 406, and four driving grooves 410 are provided, arranged in pairs on the inner walls of both sides of the housing 405. The clamping seat 406 can slide on the lifting rod 408.

[0052] Secondly, the rising groove 411 is disposed inside the housing 405, and the falling groove 412 is disposed inside the housing 405; the rising groove 411 and the falling groove 412 are connected; the rising groove 411 has a straight section and an inclined section, and the falling groove 412 has a straight section and an inclined section.

[0053] After the fascia lata is removed, it needs to be threaded. Traditionally, this requires manual operation by medical staff, which is time-consuming, labor-intensive, and inefficient. Using the precise fascia lata acquisition device of this embodiment, after removing the fascia lata, the mounting bracket 403 is installed on the movable sleeve 104. Then, the removed fascia lata is placed between the threading tube 402 and the housing 405. At this time, a suture needle 414 with suture thread is inserted into the threading hole 413 on the threading tube 402, and the suture is threaded through the… The threading hole 413 guides the suture needle 414 to facilitate puncture of the fascia lata. After the needle punctures the fascia lata, the needle tip enters between the two clamping seats 406. At this time, the medical staff pushes the lifting seat 407 down, causing the lifting seat 407 to drive the lifting rod 408 and the clamping seats 406 down. During the descent of the clamping seats 406, the moving shaft 409 is driven down. During the descent of the moving shaft 409, it first translates along the inclined section on the descending groove 412, thereby driving the clamping seats down. The needle tip is clamped by the two clamping seats 406 moving closer together. The descent of the clamping seats 406 then lowers the suture needle 414. Once the moving shaft 409 is at its lowest point, the medical staff pushes the lifting seat 407 upwards, causing the lifting seat 407 to lift the lifting rod 408, the clamping seats 406, and the moving shaft 409. During this upward movement, the moving shaft 409 enters the rising groove 411, thereby allowing the needle tip to... The moving shaft 409 first translates along the inclined section on the rising groove 411, thereby moving the two clamping seats 406 away from each other, causing the clamping seats 406 to move away from the suture needle 414. At this time, the rising of the clamping seats 406 will not cause the suture needle 414 to rise. When the clamping seats 406 rise to the highest point, the lifting seat 407 is pushed down again and the above process is repeated until the clamping seats 406 drive the suture needle 414 to penetrate the fascia lata; thereby assisting medical staff in performing suture threading operations and improving suture threading efficiency.

[0054] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.

Claims

1. A device for precisely acquiring fascia lata, comprising a mounting base, characterized in that, It also includes component cutting; The cutting assembly includes a fixed sleeve, a movable sleeve, a cutting blade, a telescopic rod, a driving component, and a cutting component. The fixed sleeve is fixedly connected to the mounting base and is located on one side of the mounting base. The driving component is disposed on the mounting base. The movable sleeve is connected to the mounting base through the driving component. The cutting blade is rotatably connected to the fixed sleeve and connected to the movable sleeve, and is located between the fixed sleeve and the movable sleeve. The telescopic rod is connected to the fixed sleeve and connected to the movable sleeve, and is disposed on the fixed sleeve. The cutting component is disposed on the fixed sleeve and cuts the fascia lata being cut. The telescopic rod includes a fixed rod and a movable rod. The movable rod is fixedly connected to the movable sleeve and is located at one end of the movable sleeve. The fixed rod is fixedly connected to the fixed sleeve and slidably connected to the movable rod, and is sleeved on the movable rod. The cutting blade includes a mounting plate, a sliding seat, and a blade. The sliding seat is slidably connected to the movable sleeve and is located inside the movable sleeve. The two ends of the mounting plate are rotatably connected to the sliding seat and the fixed sleeve, respectively. The mounting plate is disposed on the fixed sleeve. The blade is fixedly connected to the mounting plate and is located on one side of the mounting plate. The cutting blade also includes a limiting block, which is fixedly connected to the sliding seat and located on one side of the sliding seat; the movable sleeve has a limiting groove, which is disposed on the movable sleeve and located on the side of the movable sleeve close to the limiting block, and the limiting groove cooperates with the limiting block.

2. The precise acquisition device for fascia lata as described in claim 1, characterized in that, The movable sleeve has scale lines, which are disposed on the movable sleeve and located on one side of the movable sleeve.

3. The precise acquisition device for fascia lata as described in claim 1, characterized in that, The blade has a chamfer, which is provided on the blade and located on the side of the blade away from the mounting base.

4. The precise acquisition device for fascia lata as described in claim 1, characterized in that, The driving component includes a threaded rod, a threaded sleeve, and a knob. The threaded rod is rotatably connected to the mounting base and is located inside the mounting base. The threaded sleeve is threadedly connected to the threaded rod, fixedly connected to the movable sleeve, and slidably connected to the mounting base. The knob is fixedly connected to the threaded rod and is located at one end of the threaded rod.

5. The precise acquisition device for fascia lata as described in claim 1, characterized in that, The precise acquisition device for fascia lata further includes an auxiliary threading assembly, which includes a threading tube, a mounting frame, and a driving component. The threading tube is fixedly connected to the movable sleeve and passes through the movable sleeve. The mounting frame is detachably connected to the movable sleeve and is disposed on the movable sleeve. The driving component is disposed on the mounting frame.

6. The precise acquisition device for fascia lata as described in claim 5, characterized in that, The driving component includes a housing, a clamping seat, a lifting seat, a lifting rod, and a moving shaft. The housing is fixedly connected to the mounting frame and is disposed on the mounting frame. The housing has a driving groove disposed inside the housing. The moving shaft is slidably connected to the housing and extends into the driving groove. The clamping seat is fixedly connected to the moving shaft and is disposed on the moving shaft. The lifting seat is slidably connected to the housing and is sleeved on the housing. The lifting rod is fixedly connected to the lifting seat and slidably connected to the clamping seat, and is located inside the lifting seat.

7. The precise acquisition device for fascia lata as described in claim 6, characterized in that, The drive groove includes an ascending groove and a descending groove. The ascending groove is disposed inside the housing, and the descending groove is disposed inside the housing. The ascending groove and the descending groove are in communication.

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