Twist-off peeler

Abstract

The application provides a torsional peeler, comprising a rotary scraper assembly and a cutting sleeve assembly; the rotary scraper assembly comprises a scraper rod, a spring and a positioning bead; the scraper rod comprises a rod body and a blade head; the rod body is provided with a receiving hole, the spring and the positioning bead are arranged in the receiving hole, one end of the spring is fixed, and the other end of the spring supports the positioning bead; the cutting sleeve assembly comprises a sleeve piece and a handle, the sleeve piece is sleeved on the rod body, and the inner wall of the sleeve piece is provided with a receiving groove; the positioning bead penetrates through the receiving hole and extends into the receiving groove; and the bottom surface of the sleeve piece is provided with a cutting edge. The torsional peeler can quickly peel and clean subcutaneous tissues through rotation of the scraper rod, rotation and up-and-down movement of the sleeve piece, is convenient to operate, has a simple structure and effectively saves operation time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a torsion dissector. BACKGROUND

[0002] The subcutaneous tissue is between the bone surface and the skin surface, and before installing the pedicle screw, the subcutaneous tissue directly under the skin incision to the bone surface needs to be stripped and cleaned at the position of installing the pedicle screw on the bone. The existing method of stripping the subcutaneous tissue is to scrape the subcutaneous tissue on the bone surface by a tool, and then separate the subcutaneous tissue from the bone surface. However, since the subcutaneous tissue is adhered to the bone surface, it takes a lot of time and effort for medical personnel to complete the stripping of the subcutaneous tissue by using the existing method. SUMMARY

[0003] In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present application is to provide a torsion dissector which is simple in structure, easy to operate and capable of saving operation time.

[0004] To achieve the above-mentioned purpose and other related purposes, the present application provides a torsion dissector, comprising: a rotary scraper assembly and a cutting sleeve assembly.

[0005] The rotary scraper assembly comprises a scraper rod, a spring and a positioning bead; the scraper rod comprises a rod body and a cutter head arranged at the lower end of the rod body; a receiving hole is arranged on the outer side surface of the rod body, the spring and the positioning bead are arranged in the receiving hole, one end of the spring is fixed in position, and the other end of the spring supports the positioning bead.

[0006] The cutting sleeve assembly comprises a sleeve piece and a handle mounted on the sleeve piece; the sleeve piece is sleeved on the rod body, and an accommodating groove is arranged on the inner wall of the sleeve piece; the positioning bead penetrates out of the receiving hole and extends into the accommodating groove; and a cutting edge is arranged on the bottom surface of the sleeve piece.

[0007] Preferably, the rod body comprises a main rod portion and a guide rod portion connected to the lower end of the main rod portion, the cutter head is arranged at the lower end of the guide rod portion, and the receiving hole is arranged on the main rod portion.

[0008] The sleeve piece comprises a sleeve body and a guide cylinder arranged at the lower end of the sleeve body, the cutting edge is arranged on the bottom surface of the guide cylinder, and the accommodating groove is arranged on the sleeve body.

[0009] The sleeve body is sleeved on the main rod part, and the sleeve body is in clearance fit with the main rod part; the guide cylinder is sleeved on the guide rod part, and the guide cylinder is in clearance fit with the guide rod part; the guide rod part and the guide cylinder are simultaneously rotatable.

[0010] Further, the guide rod part and the guide cylinder are both in elliptical cross section.

[0011] Preferably, the blade edge is a recess provided on the bottom surface of the sleeve part.

[0012] Preferably, the handle is rotatable around the sleeve part.

[0013] Further, the top of the outer side surface of the sleeve part is provided with a cylinder outer thread, and the outer side surface of the sleeve part is further provided with a flange part below the cylinder outer thread; the handle is sleeved on the sleeve part, and the flange part supports the handle; the torsion peeler further comprises a limiting ring, and an inner hole of the limiting ring is provided with a ring inner thread; the ring inner thread is connected with the cylinder outer thread, and the limiting ring is above the handle.

[0014] Preferably, the torsion peeler further comprises a handle; the upper end of the main rod part is connected with a driving rod part, and the driving rod part is connected with the handle.

[0015] Preferably, the rotary scraper assembly further comprises a positioning part fixedly arranged in the receiving hole, the spring is between the positioning part and the positioning bead, and the position-fixed end of the spring is in contact with the positioning part.

[0016] Preferably, the aperture of the receiving hole is provided with a contraction part in structure of gradually decreasing cross-sectional dimension from inside to outside, and the contraction part supports the positioning bead.

[0017] Preferably, the sleeve part of the torsion peeler can be placed in the guide through hole of a guide, and the guide is connected with a mechanical arm of a surgical robot.

[0018] As described above, the torsion peeler has the following beneficial effects:

[0019] When using the torsion dissector of this invention, firstly, the torsion dissector is moved above the bone surface where screws need to be installed; the scraper bar of the torsion dissector is passed through the skin, and after the blade of the scraper bar reaches the bone surface, the scraper bar is rotated, and the blade of the scraper bar peels off the subcutaneous tissue above the bone surface; after the blade of the scraper bar reaches the bone surface, the handle is pressed, and the handle moves the sleeve downward, and the lower edge of the sleeve cuts the subcutaneous tissue; rotating the scraper bar and rotating the sleeve, while simultaneously lifting and pressing the handle, causes the sleeve to move up and down, and the subcutaneous tissue above the screw installation position is then completely peeled off; the torsion dissector of this invention, through the rotation of the scraper bar, the rotation of the sleeve, and the up and down movement, can quickly peel and clean subcutaneous tissue, is easy to operate, has a simple structure, and effectively saves surgical time. Attached Figure Description

[0020] Figure 1 The diagram shown is a three-dimensional structural schematic of the torsion peeler in this embodiment.

[0021] Figure 2 This is a three-dimensional structural diagram of the torsion peeler in this embodiment without a handle.

[0022] Figure 3 The diagram shown is a side view of the torsion peeler in this embodiment without a handle.

[0023] Figure 4 The diagram shown is a cross-sectional view of the torsion peeler in this embodiment when no handle is provided.

[0024] Figure 5 Displayed as Figure 4 An enlarged structural diagram of point A.

[0025] Figure 6 The diagram shown is a structural schematic of the scraper bar of the torsion peeler in this embodiment.

[0026] Figure 7 The diagram shows a cross-sectional view of the scraper bar of the torsion peeler in this embodiment, with a spring, a positioning bead, and a positioning element installed inside the receiving hole.

[0027] Figure 8 Displayed as Figure 7 A magnified structural diagram at point B.

[0028] Figure 9 The diagram shows a cross-sectional view of the scraper bar of the torsion peeler in this embodiment, with a positioning element installed inside the receiving hole.

[0029] Figure 10 Displayed as Figure 9 A magnified structural diagram at point C.

[0030] Figure 11 Fig. 7 is a perspective view of the sleeve of the twist stripper of the present embodiment with a handle fitted thereon.

[0031] Figure 12 Fig. 8 is a cross-sectional view of the sleeve of the twist stripper of the present embodiment with a handle fitted thereon.

[0032] Figure 13 Fig. 9 is a perspective view of the sleeve of the twist stripper of the present embodiment.

[0033] Figure 14 Fig. 10 is a bottom view of the sleeve of the twist stripper of the present embodiment.

[0034] Figure 15 Fig. 11 is a bottom view of the sleeve of the twist stripper of the present embodiment.

[0035] Figure 16 Fig. 12 is a perspective view of the limiting ring of the twist stripper of the present embodiment.

[0036] Figure 17 Fig. 13 is a perspective view of the blade rod of the twist stripper of the present embodiment penetrating the skin surface and stripping the subcutaneous tissue on the upper part of the bone surface.

[0037] Figure 18 Fig. 14 is a perspective view of the blade of the twist stripper of the present embodiment cutting the subcutaneous tissue after the sleeve is moved downward.

[0038] Figure 19 Fig. 15 is a perspective view of the guide connected to the mechanical arm of the present embodiment.

[0039] BRIEF DESCRIPTION OF THE DRAWINGS

[0040] 1 skin surface

[0041] 2 bone surface

[0042] 3 subcutaneous tissue

[0043] 100 blade rod

[0044] 110 rod body

[0045] 111 receiving hole

[0046] 1111 contraction portion

[0047] 112 main rod portion

[0048] 1121 groove

[0049] 113 guide rod portion

[0050] 114 driving rod portion

[0051] 120 blade

[0052] 200 spring

[0053] 300 positioning bead

[0054] 400 sleeve member

[0055] 410 receiving groove

[0056] 420 cutting edge

[0057] 430 sleeve body

[0058] 440 guide cylinder

[0059] 441 upper elliptical cylinder

[0060] 442 lower elliptical cylinder

[0061] 450 external thread of cylinder portion

[0062] 460 flange portion

[0063] 470 cleaning through hole

[0064] 500 handle

[0065] 600 limiting ring

[0066] 610 internal thread of ring body

[0067] 700 handle

[0068] 800 positioning member

[0069] 910 guide

[0070] 911 guide through hole

[0071] 920 mechanical arm DETAILED DESCRIPTION

[0072] The embodiments of the present application will be described in detail by the following specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art from the contents disclosed in the present specification.

[0073] Please refer to the accompanying drawings. It should be understood that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of the invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and are not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0074] like Figures 1 to 16 As shown, the torsion peeler of this embodiment includes: a rotating scraper assembly and a cutting sleeve assembly;

[0075] The rotary scraper assembly includes: a scraper rod 100, a spring 200, and a positioning bead 300; the scraper rod 100 includes a rod body 110 and a blade head 120 disposed at the lower end of the rod body 110; a storage hole 111 is provided on the outer side of the rod body 110, and the spring 200 and the positioning bead 300 are both disposed in the storage hole 111, one end of the spring 200 is fixed in position, and the other end of the spring 200 supports the positioning bead 300;

[0076] The cutting sleeve assembly includes: a sleeve 400 and a handle 500 mounted on the sleeve 400. The sleeve 400 is sleeved on the rod body 110. The inner wall of the sleeve 400 is provided with a receiving groove 410. A positioning bead 300 protrudes from the receiving hole 111 and extends into the receiving groove 410. A cutting edge 420 is provided on the bottom surface of the sleeve 400.

[0077] The spring 200 and the positioning bead 300 are arranged in the receiving hole 111, one end of the spring 200 is fixed, and the other end of the spring 200 supports the positioning bead 300; when the twist stripper is in an initial state, the positioning bead 300 penetrates out of the receiving hole 111, and the positioning bead 300 extends into the receiving groove 410, and the spring 200 is in an extended state; when the cutting sleeve assembly moves downward, the inner wall of the sleeve 400 extrudes the positioning bead 300, and the positioning bead 300 is pressed into the inside of the receiving hole 111 of the scraper rod 100, at this time, the spring 200 is in a contracted state, and the sleeve 400 continues to move downward, and when the sleeve 400 moves below the receiving hole 111, the restoring force of the spring 200 makes the positioning bead 300 penetrate out of the receiving hole 111; thereafter, when the cutting sleeve assembly moves upward, the inner wall of the sleeve 400 extrudes the positioning bead 300, and the positioning bead 300 is pressed into the inside of the receiving hole 111 of the scraper rod 100, at this time, the spring 200 is in a contracted state, and the sleeve 400 continues to move upward, and when the receiving groove 410 on the inner wall of the sleeve 400 is aligned with the positioning bead 300, the restoring force of the spring 200 pushes the positioning bead 300 into the receiving groove 410 on the inner wall of the sleeve 400, so that the cutting sleeve assembly is fixed on the rotary scraper assembly.

[0078] The positioning bead 300 is a spherical bead. In order to facilitate processing and use, the central axis of the receiving hole 111 is perpendicular to the central axis of the rod body 110.

[0079] When the twist stripper of the present application is used, first, the twist stripper is moved above the position on the bone surface 2 where screw installation is required; the scraper rod 100 of the twist stripper penetrates through the skin, and after the cutter head 120 of the scraper rod 100 reaches the bone surface 2, the scraper rod 100 is rotated, and the cutter head 120 of the scraper rod 100 peels the subcutaneous tissue 3 on the upper part of the bone surface 2; after the cutter head 120 of the scraper rod 100 reaches the bone surface 2, the handle 500 is pressed, the handle 500 drives the sleeve 400 to move downward, and the cutting edge 420 at the lower part of the sleeve 400 cuts the subcutaneous tissue 3; the scraper rod 100 is repeatedly rotated, and the sleeve 400 is repeatedly rotated and moved up and down by lifting and pressing the handle 500, so that the subcutaneous tissue 3 on the upper part of the screw installation position is peeled; the twist stripper of the present application can quickly peel and clean the subcutaneous tissue 3 through the rotation of the scraper rod 100, the rotation and up-and-down movement of the sleeve 400, is convenient to operate, has a simple structure, and effectively saves the operation time.

[0080] The spring 200 and the positioning bead 300 are arranged in the receiving hole 111, one end of the spring 200 is fixed, and the other end of the spring 200 supports the positioning bead 300;

[0081] The rod body 110 comprises a main rod part 112 and a guide rod part 113 connected with the lower end of the main rod part 112, and the cutter head 120 is arranged at the lower end of the guide rod part 113; the receiving hole 111 is arranged on the main rod part 112;

[0082] The sleeve part 400 comprises a sleeve body 430 and a guide cylinder 440 arranged at the lower end of the sleeve body 430, and the blade edge 420 is arranged on the bottom surface of the guide cylinder 440; the receiving groove 410 is arranged on the sleeve body 430;

[0083] The sleeve body 430 is sleeved on the main rod part 112, and the sleeve body 430 is in clearance fit with the main rod part 112; the guide cylinder 440 is sleeved on the guide rod part 113, and the guide cylinder 440 is in clearance fit with the guide rod part 113; the cross-sectional shape of the guide rod part 113 is the same as the cross-sectional shape of the guide cylinder 440, and the guide cylinder 440 and the guide rod part 113 can rotate simultaneously.

[0084] Since the cross-sectional shape of the guide rod part 113 is the same as the cross-sectional shape of the guide cylinder 440, when the scraping cutter rod 100 is rotated, the guide cylinder 440 and the guide rod part 113 rotate simultaneously, so that the stripping of the subcutaneous tissue 3 by the cutter head 120 of the scraping cutter rod 100 and the stripping of the subcutaneous tissue 3 by the blade edge 420 of the guide cylinder 440 can be performed simultaneously, and the operation of rapidly stripping the subcutaneous tissue 3 is realized.

[0085] The cross-sectional shape of the guide rod part 113 and the cross-sectional shape of the guide cylinder 440 are both oval. This structure facilitates the rotation of the sleeve part 400 and the scraping cutter rod 100, and the sleeve part 400 and the scraping cutter rod 100 will not damage the subcutaneous tissue 3 during the rotation.

[0086] The guide cylinder 440 comprises an upper elliptical cylinder 441 and a lower elliptical cylinder 442 connected with the lower end of the upper elliptical cylinder 441, and the blade edge 420 is arranged on the bottom surface of the lower elliptical cylinder 442. In this embodiment, the number of the blade edges 420 is two. The lower elliptical cylinder 442, the upper elliptical cylinder 441 and the sleeve body 430 constitute the sleeve part 400, and the sleeve part 400 can be integrally machined and formed, or the lower elliptical cylinder 442, the upper elliptical cylinder 441 and the sleeve body 430 are combined by welding to form the sleeve part 400.

[0087] The bottom of the cutter head 120 of the scraping cutter rod 100 is in an arc structure, which is beneficial to the stripping of the subcutaneous tissue 3 of the bone surface 2 by the cutter head 120 of the scraping cutter rod 100.

[0088] The cross section of the main rod part 112 and the sleeve body 430 are circular, which facilitates the processing of the main rod part 112 and the sleeve body 430. The outer side of the main rod part 112 is provided with a plurality of grooves 1121, which facilitates the holding of the main rod part 112 and has an anti-skid effect. The guide rod part 113 transitions from an elliptical structure to a circular structure to the main rod part 112.

[0089] The blade edge 420 is a recess provided on the bottom surface of the sleeve 400. This structure is simple and facilitates processing, and by rotating the guide cylinder 440, the blade edge 420 can separate the subcutaneous tissue 3 from the bone surface 2. The blade edge 420 is elliptical or circular. The provision of the blade edge 420 can increase the separation capacity of the subcutaneous tissue 3.

[0090] The handle 500 can rotate around the axis of the sleeve 400. The handle 500 is movably connected to the sleeve 400, so the handle 500 does not rotate with the sleeve 400, and the handle 500 can drive the sleeve 400 to move up and down while the sleeve 400 is rotating.

[0091] The top of the outer side of the sleeve 400 is provided with a cylinder outer thread 450, and the outer side of the sleeve 400 is also provided with a flange part 460, which is below the cylinder outer thread 450; the handle 500 is sleeved on the sleeve 400, and the flange part 460 supports the handle 500; the twist stripper further comprises a limiting ring 600, and the inner hole of the limiting ring 600 is provided with a ring inner thread 610; the ring inner thread 610 is connected with the cylinder outer thread 450, the limiting ring 600 is above the handle 500, and the limiting ring 600 limits the upward movement of the handle 500. The lower surface of the handle 500 is limited by the flange part 460 of the sleeve 400, and the upper surface of the handle 500 is limited by the limiting ring 600. Therefore, the handle 500 cannot move axially along the sleeve 400, but can rotate around the axis of the sleeve 400. When the handle 500 is pressed, the sleeve 400 moves downward. The limiting ring 600 is threadedly connected with the sleeve 400, which facilitates the installation of the limiting ring 600 on the sleeve 400.

[0092] The twist stripper further comprises a handle 700; the upper end of the main rod part 112 is connected with a driving rod part 114, and the driving rod part 114 is connected with the handle 700. The provision of the handle 700 facilitates the driving of the scraper rod 100 by medical staff.

[0093] The driving rod part 114, the main rod part 112 and the blade head 120 are sequentially connected to form the scraper rod 100, which can be integrally processed and formed, or the parts of the scraper rod 100 are combined and formed after welding.

[0094] The rotary scraper assembly further comprises a positioning member 800 fixedly arranged in the receiving hole 111, the spring 200 is arranged between the positioning member 800 and the positioning bead 300, and the position-fixed end of the spring 200 is in contact with the positioning member 800. The spring 200 is arranged in the receiving hole 111 of the scraper rod 100, one end of the spring 200 is blocked by the positioning member 800, and the other end of the spring 200 is blocked by the positioning bead 300. The positioning member 800 is arranged so that the spring 200 can be stably arranged in the receiving hole 111. The positioning member 800 is a pin fixed in the receiving hole 111.

[0095] The opening of the receiving hole 111 is provided with a contraction portion 1111, the contraction portion 1111 has a structure that the cross-sectional dimension gradually decreases from inside to outside, and the contraction portion 1111 supports the positioning bead 300. The diameter of the positioning bead 300 is greater than the diameter of the opening of the receiving hole 111 of the scraper rod 100, so that the positioning bead 300 protrudes from the outer surface of the scraper rod 100 under the elastic force of the spring 200.

[0096] The sleeve body 430 of the sleeve member 400 is provided with a plurality of cleaning through holes 470 on the outer side surface. The cleaning through holes 470 not only reduce the weight of the sleeve member 400, but also provide a disinfection channel for the inside of the sleeve member 400.

[0097] The sleeve member 400 of the twist stripper can be arranged in the guide through hole 911 of the guide 910, and the guide 910 is connected to the mechanical arm 920 of the surgical robot. The guide 910 realizes the guiding effect, so that the twist stripper can be accurately placed at the position where the subcutaneous tissue 3 needs to be stripped.

[0098] As shown in Figure 1 , Figures 17 to 19 The use method of the distraction device of the embodiment includes the following steps:

[0099] 1) After the controller of the surgical robot calculates the staple placement position, the axis of the guide through hole 911 of the guide 910 points to the screw mounting point; at this time, the sleeve member 400 of the twist stripper is arranged through the guide 910, the handle 700 is rotated to make the scraper rod 100 pass through the skin surface 1, so that the subcutaneous tissue 3 on the upper part of the bone surface 2 is stripped;

[0100] 2) After the cutter head 120 reaches the bone surface 2, the handle 500 on the sleeve member 400 is pressed, so that the blade 420 at the lower part of the sleeve member 400 cuts the subcutaneous tissue 3; the handle 700 is repeatedly rotated, the sleeve member 400 and the scraper rod 100 are rotated, and the handle 500 is lifted and pressed, so that the subcutaneous tissue 3 on the upper part of the screw mounting point is stripped, at this time, a slightly larger distraction sleeve or a step-by-step distraction sleeve can be arranged, and finally a stable surgical channel directly from the skin surface 1 to the bone surface 2 is formed.

[0101] The twist peeler of the embodiment is connected with the controller of the surgical robot and the mechanical arm 920. After the controller calculates and positions the pedicle screw installation position, the subcutaneous tissue 3 below the skin incision and directly to the bone surface 2 needs to be peeled and cleaned before the pedicle screw is installed to create a surgical channel. The twist peeler can accurately and in a small range peel the human tissue on the screw path with the assistance of the guide 910 at the end of the mechanical arm 920. The operation is very convenient, and the damage to the human body is small.

[0102] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present application. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the present application should be covered by the claims of the present application.

Claims

1. A twist-off peeler characterised in that, The utility model relates to a rotary scraper assembly and cutting sleeve assembly, and belongs to the field of cutting tools. The rotary scraper assembly comprises a scraper rod (100), a spring (200) and a positioning bead (300), the scraper rod (100) comprises a rod body (110) and a cutter head (120) arranged at the lower end of the rod body (110), a receiving hole (111) is arranged on the outer side of the rod body (110), the spring (200) and the positioning bead (300) are arranged in the receiving hole (111), one end of the spring (200) is fixed, and the other end of the spring (200) supports the positioning bead (300). The cutting sleeve assembly comprises a sleeve piece (400) and a handle (500) arranged on the sleeve piece (400), the sleeve piece (400) is sleeved on the rod body (110), and an accommodating groove (410) is arranged on the inner wall of the sleeve piece (400); the positioning bead (300) penetrates out of the receiving hole (111) and extends into the accommodating groove (410); and a blade edge (420) is arranged on the bottom surface of the sleeve piece (400). The rod body (110) comprises a main rod part (112) and a guide rod part (113) connected to the lower end of the main rod part (112), and the cutter head (120) is arranged at the lower end of the guide rod part (113); and the receiving hole (111) is arranged on the main rod part (112). The sleeve piece (400) comprises a sleeve body (430) and a guide cylinder (440) arranged at the lower end of the sleeve body (430), and the blade edge (420) is arranged on the bottom surface of the guide cylinder (440); and the accommodating groove (410) is arranged on the sleeve body (430). The sleeve body (430) is sleeved on the main rod part (112), and the sleeve body (430) is in clearance fit with the main rod part (112); the guide cylinder (440) is sleeved on the guide rod part (113), and the guide cylinder (440) is in clearance fit with the guide rod part (113); the guide rod part (113) and the guide cylinder (440) are simultaneously rotatable. The guide rod part (113) and the guide cylinder (440) are both in the shape of an ellipse.

2. The twist-off applicator of claim 1, wherein: The blade edge (420) is a concave part arranged on the bottom surface of the sleeve piece (400).

3. The twist-off applicator of claim 1, wherein: The handle (500) is rotatable around the sleeve piece (400).

4. The twist-off applicator of claim 1, wherein: ​ 5. The twist-off peeler according to claim 4, characterized in that: The top of the outer side of the sleeve piece (400) is provided with a cylinder part outer thread (450), and the outer side of the sleeve piece (400) is further provided with a flange part (460), which is below the cylinder part outer thread (450); the handle (500) is sleeved on the sleeve piece (400), and the flange part (460) supports the handle (500); the torsion peeling device further comprises a limiting ring (600), and the inner hole of the limiting ring (600) is provided with a ring body inner thread (610); the ring body inner thread (610) is connected with the cylinder part outer thread (450), and the limiting ring (600) is above the handle (500).

6. The twist-off applicator of claim 1, wherein: Further comprising a handle (700); the upper end of the main rod part (112) is connected with a driving rod part (114), and the driving rod part (114) is connected with the handle (700).

7. The twist-off applicator of claim 1, wherein: The rotating scraper assembly further comprises a positioning piece (800), which is fixedly arranged in the storage hole (111), and the spring (200) is between the positioning piece (800) and the positioning bead (300), and the position-fixed end of the spring (200) is in contact with the positioning piece (800).

8. The twist-off applicator of claim 1, wherein: The aperture of the storage hole (111) is provided with a contraction part (1111), which is a structure that the cross-sectional dimension decreases successively from inside to outside, and the contraction part (1111) supports the positioning bead (300).

9. The twist-off applicator of claim 1, wherein: The sleeve piece (400) of the torsion peeling device can be placed in the guide through hole (911) of the guide (910), and the guide (910) is connected with the mechanical arm (920) of the surgical robot.

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