Flushable trephine and navigable surgical saw

Abstract

The utility model relates to a washable trephine and a navigable surgical saw, which are applied to the surgical saw, the surgical saw comprises a trephine body and an endoscope, the trephine body is columnar, the middle part of the trephine body is hollow and serves as an observation cavity, the endoscope extends into the observation cavity, and one end of the trephine body is provided with a zigzag structure which is annularly arranged and serves as an operation end; the cavity wall of the observation cavity is provided with a radial through flushing hole, and the flushing hole is arranged close to the operation end. According to the scheme, the flushing hole is formed in the position, close to the operation end, of the trephine body and penetrates through the cavity wall of the observation cavity, that is, the flushing hole is connected with the observation cavity, flushing fluid, blood, sclerotin and the like can be discharged out of the flushing hole in time, and due to the fact that the flushing hole is close to the operation end, the flushing hole is adjacent to the working position of the endoscope; therefore, the flushing and liquid discharging efficiency of the visual field in front of the endoscope can be improved, images at the operation end can be clearly shot by the endoscope, the influence on the operation visual field of a doctor is reduced, and surgical operation of the doctor is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of surgical knives, in particular to a flushable ring saw and a navigable surgical saw. Background Art

[0002] Transforaminal endoscopic lumbar disc surgery has become one of the minimally invasive surgeries that effectively treat lumbar disc herniation. The trephine saw is a commonly used surgical instrument in transforaminal endoscopic lumbar disc surgery. It can effectively remove bone tissue and has the advantages of less trauma, smaller incision, no need for muscle stripping, no need for excessive bone removal, less impact on spinal stability, faster recovery, and shorter hospital stay. At present, the technology of transforaminal endoscopic lumbar disc surgery has basically matured and has achieved good clinical results in spinal decompression.

[0003] The main problems and defects in the prior art include: in the prior art, endoscopic ring saws are mostly used, which has the disadvantages that the endoscopic operation channel limits the operation direction of the ring saw, the position seen under the endoscope is limited, and when the ring saw is inserted, it needs to be positioned separately and the saw teeth are prone to damage peripheral nerves; after the ring saw has worked for a period of time, the endoscope is surrounded by bone and blood. When the ring saw remains in working condition, even if the endoscope is cleaned synchronously, the cleaned bone and blood cannot be discharged in time, resulting in poor cleaning effect of the endoscope, affecting the endoscopic field of view, and making it inconvenient to watch the working status of the ring saw in real time. Utility Model Content

[0004] Based on this, a flushable ring saw and a navigable surgical saw are provided to solve the problem in the prior art that the endoscope cannot be well cleaned in real time when the ring saw is working.

[0005] On the one hand, the utility model provides a flushable ring saw, which is applied to a surgical saw. The surgical saw includes a ring saw body and an endoscope. The ring saw body is columnar and hollow in the middle and serves as an observation cavity. The endoscope extends into the observation cavity. One end of the ring saw body is provided with a ring-arranged serrated structure and serves as an operating end. A radially penetrating flushing hole is opened on the wall of the observation cavity, and the flushing hole is arranged close to the operating end.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] In one embodiment, the flushing holes are staggered along the axial direction of the trephine body.

[0008] On the other hand, the utility model also provides a navigable surgical saw, including a flushable ring saw, a positioner and a torque handle; along the direction away from the operating end, the positioner and the torque handle are sequentially mounted on the outer wall of the other end of the ring saw body.

[0009] In one embodiment, the positioner includes a connecting portion surrounding the outer circumference of the ring saw body, the connecting portion has a cleaning liquid interface extending radially outward, an annular liquid injection cavity is formed between the middle portion of the connecting portion and the ring saw body, a liquid guide hole is opened at the position of the ring saw body surrounded by the liquid injection cavity, and the cleaning liquid interface, the liquid injection cavity, the liquid guide hole, the observation cavity and the flushing hole are connected in sequence.

[0010] In one embodiment, the liquid guiding holes are evenly distributed around the circumference and at least two are provided.

[0011] In one embodiment, at least two sealing grooves are axially arranged on the inner wall of the positioner or the outer wall of the ring saw body, and sealing rings are arranged in the sealing grooves; and the injection cavity is located between the two sealing grooves.

[0012] In one embodiment, the positioner further includes a bracket and a positioning structure, and the connecting portion, the bracket and the positioning structure are connected in sequence.

[0013] In one of the embodiments, a raised and annular positioning step is provided on the outer wall of the ring saw body, and the positioning step abuts against one end of the positioner.

[0014] In one embodiment, the torque handle includes a cylindrical sleeve portion and a rotary wrench fixed to an outer wall of the sleeve portion, and at least two rotary wrenches extend radially from the sleeve portion.

[0015] In one embodiment, three rotating wrenches are provided and located in the same circumferential direction, one end of the sleeve portion is sleeved with the ring saw body; a deep groove ball bearing is provided in the middle hole of the other end of the sleeve portion, and is rotatably connected to the endoscope through the deep groove ball bearing.

[0016] The beneficial effects of the utility model are as follows: a flushing hole is arranged at a position near the operating end of the ring saw body, and the flushing hole passes through the wall of the observation cavity, that is, the flushing hole is connected to the observation cavity, so that when the endoscope is inserted into the ring saw body for operation, since the endoscope needs to be inserted into the observation cavity and close to the operating end to take images, when water is injected into the observation cavity for flushing, flushing liquid, blood, bone, etc. can be discharged from the flushing hole in time. In addition, the flushing hole is arranged close to the operating end, and it can be known that the flushing hole is adjacent to the working position of the endoscope, so the flushing and drainage efficiency of the front field of view of the endoscope can be improved, so that the image of the operating end can be clearly captured by the endoscope, thereby reducing the impact on the doctor's operating field and facilitating the doctor's surgical operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a navigable surgical saw in one embodiment;

[0018] Figure 2 for Figure 1 A magnified view of the structure at center A;

[0019] Figure 3 for Figure 1 A magnified view of the structure at B in the middle;

[0020] Figure 4 for Figure 1 A schematic diagram of the structure from another perspective;

[0021] Figure 5 for Figure 4 The first structural schematic diagram of the cross-sectional view at CC in the middle;

[0022] Figure 6 for Figure 5 A magnified view of the structure at D in the middle;

[0023] Figure 7 for Figure 4 The second structural schematic diagram of the cross-sectional view at CC in the middle;

[0024] Figure 8 for Figure 7 The enlarged view of the structure at E in the middle;

[0025] Fig. 9 for Figure 7 Enlarged view of the structure at F in the middle.

[0026] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0027] 100, ring saw body; 110, operating end; 120, flushing hole; 130, positioning step;

[0028] 200. Endoscopy;

[0029] 300, locator;

[0030] 310, connecting part; 311, cleaning liquid interface; 312, sealing groove; 313, sealing ring;

[0031] 320, bracket;

[0032] 400, torque handle; 410, sleeve joint; 420, rotating wrench;

[0033] 500, liquid injection chamber; 600, deep groove ball bearing. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] Embodiment 1:

[0036] A flushable trepan, see Figure 1 and Figure 2 , applied to surgical saws, the surgical saws include a ring saw body 100 and an endoscope 200, the ring saw body 100 is columnar and hollow in the middle and serves as an observation cavity, the endoscope 200 extends into the observation cavity, one end of the ring saw body 100 is provided with a ring-arranged serrated structure and serves as an operating end 110, and a radially penetrating flushing hole 120 is opened on the cavity wall of the observation cavity, and the flushing hole 120 is arranged close to the operating end 110.

[0037] The beneficial effects of this embodiment are as follows: a flushing hole 120 is provided at a position of the ring saw body 100 close to the operating end 110, and the flushing hole 120 passes through the wall of the observation cavity, that is, the flushing hole 120 is connected to the observation cavity, so that when the endoscope 200 is inserted into the ring saw body 100 for operation, since the endoscope 200 needs to be inserted into the observation cavity and close to the operating end 110 for image capture, when water is injected into the observation cavity for flushing, the flushing liquid, blood, bone, etc. can be discharged from the flushing hole 120 in time. In addition, the flushing hole 120 is provided close to the operating end 110, so it can be seen that the flushing hole 120 is adjacent to the working position of the endoscope 200, thereby improving the flushing and drainage efficiency of the front field of view of the endoscope 200, so that the image of the operating end 110 can be clearly captured by the endoscope 200, thereby reducing the impact on the doctor's operating field of view and facilitating the doctor's surgical operation.

[0038] On the basis of the above embodiment, the flushing holes 120 are staggered along the axial direction of the ring saw body 100 .

[0039] The beneficial effect of adopting the preferred scheme in the above embodiment is that multiple flushing holes 120 are provided to facilitate the timely discharge of flushing liquid; the flushing holes 120 are staggered along the axial direction to facilitate the timely discharge of flushing liquid when the endoscope 200 is axially adjusted, and to avoid the situation where the drainage is not smooth due to the blockage of a single flushing hole 120.

[0040] On the basis of the above preferred solution, see Figure 1 and Figure 2 The flushing holes 120 may be arranged in multiple directions in the same circumferential direction, or may be arranged in only one direction in the same circumferential direction; the flushing holes 120 may be arranged in different radial directions to facilitate the discharge of the cleaning liquid from the circumferential direction of the observation cavity. The flushing holes 120 are regular circular holes.

[0041] Embodiment 2:

[0042] A navigable surgical saw, see Figure 1 and Figure 3 , including a flushable ring saw, and also including a positioner 300 and a torque handle 400; along the direction away from the operating end 110, the positioner 300 and the torque handle 400 are sequentially sleeved on the outer wall of the other end of the ring saw body 100.

[0043] The beneficial effects of this embodiment are as follows: a positioner 300 is provided to accurately position the ring saw body 100, so as to accurately grasp the position of the operating end 110, thereby improving the accuracy of the operating end 110 in rotating and grinding bones; a torque handle 400 is provided, and the ring saw body 100 can be driven to rotate by rotating the torque handle 400, thereby driving the operating end 110 to rotate, so as to control the operating end 110 to rotate and grind bones, which is easy to operate.

[0044] Based on the above embodiments, see Figure 4 - Figure 8 The positioner 300 includes a connecting portion 310 surrounding the outer periphery of the ring saw body 100, and the connecting portion 310 has a cleaning liquid interface 311 extending radially outward. An annular liquid injection cavity 500 is formed between the middle portion of the connecting portion 310 and the ring saw body 100. A liquid guide hole is opened at the position of the ring saw body 100 surrounded by the liquid injection cavity 500, and the cleaning liquid interface 311, the liquid injection cavity 500, the liquid guide hole, the observation cavity and the flushing hole 120 are connected in sequence.

[0045] The beneficial effect of adopting the preferred solution in the above embodiment is that, see Figure 6 and Figure 8 The positioner 300 is provided with a connecting portion 310, which surrounds the ring saw body 100 through the connecting portion 310. The connecting portion 310 is provided with a cleaning liquid interface 311, and the cleaning liquid is connected through the cleaning liquid interface 311. The connected cleaning liquid will enter the injection cavity 500 in turn, and then enter the observation cavity through the liquid guide hole, and finally the cleaning liquid flows to the flushing hole 120. The cleaning liquid can flow out from the flushing hole 120 or the operating end 110; because the endoscope 200 needs to be extended into a position close to the operating end 110 during operation, the flow of the cleaning liquid can effectively flush the gap between the operating end 110 and the endoscope 200, and the flushing effect is good.

[0046] On the basis of the above preferred solution, see Figure 6 and Figure 8 There are three forms of the injection chamber 500. In the first form, only the inner wall of the connecting portion 310 is provided with a groove, and the groove serves as the injection chamber 500. In the second form, only the outer wall of the ring saw body 100 is provided with a groove, and the groove serves as the injection chamber 500. In the third form, both the inner wall of the connecting portion 310 and the outer wall of the ring saw body 100 are provided with grooves, and the two grooves are connected to form the injection chamber 500.

[0047] On the basis of the above embodiment, the liquid guiding holes are evenly distributed in the circumference and at least two are provided.

[0048] The beneficial effect of adopting the preferred solution in the above embodiment is that a plurality of liquid guide holes are provided, thereby ensuring the flow rate of the cleaning liquid in the observation cavity, thereby facilitating improving the cleaning effect in front of the field of view of the endoscope 200.

[0049] On the basis of the above preferred solution, the liquid guiding hole is in the shape of an elongated strip, which is beneficial to increase the flow rate of the liquid.

[0050] Based on the above embodiments, see Figure 6 and Figure 8 At least two sealing grooves 312 are axially provided on the inner wall of the positioner 300 or the outer wall of the ring saw body 100 , and a sealing ring 313 is provided in the sealing groove 312 ; the injection cavity 500 is located between the two sealing grooves 312 .

[0051] The beneficial effect of adopting the preferred scheme in the above embodiment is that a sealing groove 312 is provided to prevent leakage of the cleaning liquid and facilitate the cleaning liquid to flow along a set path, thereby ensuring the cleaning effect; in addition, the sealing ring 313 also facilitates the relative rotation of the positioner 300 and the ring saw body 100, that is, when the ring saw body 100 rotates, the positioner 300 will not rotate with the ring saw body 100.

[0052] On the basis of the above preferred solution, the sealing ring 313 can be a step seal, which can ensure that the rotation of the ring saw body 100 is smooth enough and can also ensure the sealing after water injection. Figure 6 and Figure 8 , the sealing groove 312 has two structures: see Figure 8 The first type is that a sealing groove 312 is provided on the inner wall of the positioner 300, and a sealing ring 313 is provided in the sealing groove 312. The positioner 300 is provided with a sealing ring 313, which can ensure that the rotation can be smooth enough and the sealing after water injection can be ensured; see Figure 6 The second type is that the sealing groove 312 is provided on the outer wall of the ring saw body 100, and a sealing ring 313 is provided in the sealing groove 312. 带有 The sealing ring 313 can also ensure that the rotation is smooth enough and the sealing is ensured after water injection.

[0053] Based on the above embodiments, see Figure 3 The positioner 300 further includes a bracket 320 and a positioning structure, and the connecting portion 310, the bracket 320 and the positioning structure are connected in sequence.

[0054] The beneficial effect of adopting the preferred scheme in the above embodiment is that on the positioner 300, the connecting part 310 is connected to the positioning structure through the bracket 320, so that the cleaning liquid interface 311 and the positioning structure do not rotate with the ring saw body 100, and the stability of the connection between the cleaning liquid interface 311 and the positioning structure is ensured.

[0055] On the basis of the above preferred solution, see Figure 3 One end of the bracket 320 is perpendicular to the axial direction of the connecting portion 310 and the end is fixed to the connecting portion 310; see Figure 3The bracket 320 is an umbrella-shaped structure, which is divided into a main rod and a support rod. The main rod is perpendicular to the axial direction of the connecting part 310. The two ends of the main rod are respectively fixed on the connecting part 310 and the support rod. The support rods are arranged in an X shape. The main rod is connected to the X-shaped intersection position of the support rods. The four ends of the X-shaped support rods are fixed with positioning structures. Arc-shaped reinforcing ribs can also be set between the branches of the support rods. The positioning structure includes an optical positioning ball. The bracket 320 and the cleaning liquid interface 311 extend in two opposite directions of the connecting part 310, which is convenient for structural setting and does not interfere with each other.

[0056] Based on the above embodiments, see Figure 6 and Figure 8 The outer wall of the ring saw body 100 is provided with a raised and annular positioning step 130 , and the positioning step 130 abuts against one end of the positioner 300 .

[0057] The beneficial effect of adopting the preferred solution in the above embodiment is that the positioning step 130 is provided to facilitate the setting of the installation position of the positioner 300.

[0058] Based on the above embodiments, see Figure 3 and Figure 4 The torque handle 400 includes a cylindrical sleeve portion 410 and a rotating wrench 420 fixed to the outer wall of the sleeve portion 410 , and at least two rotating wrenches 420 extend radially from the sleeve portion 410 .

[0059] The beneficial effect of adopting the preferred scheme in the above embodiment is that the torque handle 400 is provided with a sleeve portion 410 and a rotating wrench 420. Since the rotating wrenches 420 extend radially along the sleeve portion 410 and there are at least two of them, the torque handle 400 can be driven to rotate by rotating the rotating wrenches 420, which is convenient for adjustment.

[0060] Based on the above embodiments, see Figure 3 and Figure 4 Three rotating wrenches 420 are provided and located in the same circumferential direction. One end of the sleeve portion 410 is sleeved with the ring saw body 100. A deep groove ball bearing 600 is provided in the middle hole of the other end of the sleeve portion 410, and is rotatably connected to the endoscope 200 through the deep groove ball bearing 600.

[0061] The beneficial effect of adopting the preferred solution in the above embodiment is that, see Fig. 9 A deep groove ball bearing 600 is provided, and the endoscope 200 is rotatably connected to the sleeve portion 410 through the deep groove ball bearing 600, so that the endoscope 200 does not need to rotate with the ring saw body 100, thereby facilitating visual field observation through the endoscope 200 and axial and rotational adjustment of the position of the endoscope 200.

[0062] On the basis of the above preferred solution, the rotating wrenches 420 are evenly arranged in the same circumferential direction, which facilitates the rotation of the rotating wrenches 420, thereby facilitating the adjustment of the ring saw body 100. The axial direction of the ring saw body 100 can be divided into a detachable multi-section structure, thereby facilitating the disassembly of the change and the installation of the positioner 300 and the torque handle 400.

[0063] The device is used as follows: Figure 1-9 Before the operation, select the appropriate specifications of the ring saw body 100. The ring saw body 100 can be set as a multi-stage structure, so as to facilitate the adjustment of local dimensions to suit the operation of the operation; insert the endoscope 200, that is, the endoscope electronic lens, into the ring saw body 100 and reach the target position; pair the positioner 300 with the surgical navigation system, connect the endoscope electronic lens connection line to the endoscope video camera, and connect the injection tube to the cleaning liquid interface 311 of the positioner 300, which can be set as a Luer connector; start to turn the torque handle 400 and drive the ring saw body 100 to achieve bone sawing. During the bone sawing process, since there is water to wash the lens and the front of the lens, the real-time situation of the entire bone sawing can be clearly observed. Under the joint action of the surgical navigation system, the dual visualization of the ring saw work can be realized-optical real-time navigation and endoscope real-time image visualization.

[0064] The technical effects achieved are: a reference frame and an endoscope electronic lens are added during the operation of the ring saw, realizing dual visualization of the ring saw when it is working, greatly improving the doctor's surgical accuracy and efficiency; real-time visualization can reduce the number of X-rays; a Luer joint is added to enable timely cleaning of sawed bones, and the electronic lens has a clearer field of view; a self-rotating structure is added to the handle to prevent the endoscope 200 from shaking during use.

[0065] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0066] The structures, proportions, sizes, etc. illustrated in the drawings in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0067] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0068] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0072] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. A flushable ring saw, applied to a surgical saw, the surgical saw comprising a ring saw body (100) and an endoscope (200), the ring saw body (100) being columnar and hollow in the middle and serving as an observation cavity, the endoscope (200) extending into the observation cavity, characterized in that: One end of the ring saw body (100) is provided with a sawtooth structure arranged in an annular manner and serves as an operating end (110). A flushing hole (120) penetrating radially is opened on the cavity wall of the observation cavity. The flushing hole (120) is arranged close to the operating end (110).

2. The flushable trepan according to claim 1, characterized in that The flushing holes (120) are arranged in a staggered manner along the axial direction of the ring saw body (100).

3. A navigable surgical saw, characterized in that: It comprises a flushable ring saw as described in any one of claims 1-2, and also comprises a positioner (300) and a torque handle (400); along the direction away from the operating end (110), the positioner (300) and the torque handle (400) are sequentially mounted on the outer wall of the other end of the ring saw body (100).

4. The navigable surgical saw according to claim 3, characterized in that: The positioner (300) includes a connecting portion (310) surrounding the outer periphery of the ring saw body (100), the connecting portion (310) is provided with a cleaning liquid interface (311) extending radially outward, a ring-shaped liquid injection cavity (500) is formed between the middle portion of the connecting portion (310) and the ring saw body (100), a liquid guide hole is opened at a position of the ring saw body (100) surrounded by the liquid injection cavity (500), and the cleaning liquid interface (311), the liquid injection cavity (500), the liquid guide hole, the observation cavity and the flushing hole (120) are connected in sequence.

5. The navigable surgical saw according to claim 4, characterized in that: The liquid guide holes are evenly distributed around the circumference and at least two are provided.

6. The navigable surgical saw according to claim 4, characterized in that: The inner wall of the positioner (300) or the outer wall of the ring saw body (100) is provided with at least two sealing grooves (312) along the axial direction, and a sealing ring (313) is provided in the sealing groove (312); the injection cavity (500) is located between the two sealing grooves (312).

7. The navigable surgical saw according to claim 4, characterized in that: The positioner (300) further comprises a bracket (320) and a positioning structure, and the connecting portion (310), the bracket (320) and the positioning structure are connected in sequence.

8. The navigable surgical saw according to claim 3, characterized in that: The outer wall of the ring saw body (100) is provided with a protruding and annular positioning step (130), and the positioning step (130) abuts against one end of the positioner (300).

9. The navigable surgical saw according to claim 3, characterized in that: The torque handle (400) comprises a columnar sleeve portion (410) and a rotating wrench (420) fixed to the outer wall of the sleeve portion (410), and at least two rotating wrenches (420) extend radially from the sleeve portion (410).

10. The navigable surgical saw according to claim 9, characterized in that: The rotating wrenches (420) are provided with three and are located in the same circumferential direction. One end of the sleeve portion (410) is sleeved with the ring saw body (100); a deep groove ball bearing (600) is provided in the middle hole of the other end of the sleeve portion (410), and is rotatably connected to the endoscope (200) through the deep groove ball bearing (600).

Images