CN213156218U - Alveolar nerve dissociation art bone conduction board that goes down of bone support formula - Google Patents
Alveolar nerve dissociation art bone conduction board that goes down of bone support formula Download PDFInfo
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- CN213156218U CN213156218U CN202021574802.0U CN202021574802U CN213156218U CN 213156218 U CN213156218 U CN 213156218U CN 202021574802 U CN202021574802 U CN 202021574802U CN 213156218 U CN213156218 U CN 213156218U
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Abstract
The utility model relates to the field of medical equipment, in particular to a bone-supporting type alveolar nerve dissociation surgery bone removal guide plate, which comprises a mandible bone removal guide plate body matched with an alveolar nerve vascular bundle, wherein the mandible bone removal guide plate body comprises a mandible positioning part and a hollow bone removal part arranged on the mandible positioning part, and the mandible positioning part comprises a mandible buccal binding surface; the mandible positioning part is provided with a positioning hole and a positioning part matched with the positioning hole. The utility model discloses it is more accurate to make the position of boning to reduce the operation time extension, avoid increasing, the unexpected damage nerve, remaining bone volume reduction and postoperative swelling infection risk increase scheduling problem for seeking the hemorrhage that the too much boning of nerve leads to.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to a alveolar nerve dissociation art bone conduction board that goes under bone support formula.
Background
Artificial dental implants have become increasingly important as a means of repairing tooth loss. With the development of dental implantation technology, many patients who cannot perform dental implantation due to insufficient bone mass of the alveolar bone can perform dental implantation and obtain good restoration effect. Because the central part of the mandible has the lower alveolar nerve to walk, the implant with the length of at least 8-12 mm needs to be implanted into the implant in the lower mandibular molar area, and the lower edge of the implant needs to keep the distance of at least 3mm from the upper wall of the lower alveolar nerve tube (so as to avoid the risk of nerve injury), the actual distance from the top end of the alveolar bone of a patient to the upper wall of the lower alveolar nerve tube needs to be measured and evaluated before the mandibular molar area is implanted for treatment, and the lower alveolar nerve can be cut off even due to accidental injury in the operation if the actual distance is too short.
For some patients with tooth loss and moderate alveolar bone absorption, when the actual distance between the top of the alveolar bone in the tooth implantation area and the upper wall of the lower alveolar nerve tube is not enough, besides the alveolar bone increment staged implantation, the buccal windowing dissection of the mandibular bone body and the simultaneous implantation of the free lower alveolar neurovascular bundle can be considered. The operation process comprises the following steps: before operation, the position of the lower alveolar neural tube is confirmed according to an X-ray film, a buccal side mucoperiosteal flap is cut and peeled to the lower mandibular edge, the buccal side or upper side bone plate of the lower alveolar neural tube is cut and removed, a lower alveolar neurovascular bundle is separated by a small stripper, and the lower alveolar neurovascular bundle is pulled out by a nerve hook. Selecting implant with corresponding length, and implanting from the set position and direction. Finally, bone grafting is carried out in the bone-removed area, the lower alveolar nerve is placed back to the outer edge of the mandible, and the mucoperiosteal flap is tightly sutured. The problems existing in the prior art include: because alveolar nerve is located jaw body central zone down, local art field is little, and the position is dark, and alveolar nerve is comparatively sensitive down, dissects, dissociates alveolar nerve vascular bundle often because of windowing to go the bone location and deviate from neural region under jaw body buccal side, leads to the operation time extension, and it increases to bleed, and unexpected damage nerve leads to remaining bone volume to reduce for seeking neural excessive boning, and postoperative swelling infects the risk increase scheduling problem.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a bone-supporting type alveolar nerve denervation bone removal guide plate for solving the problems of the prior art.
In order to achieve the above objects and other related objects, the present invention provides a bone-supporting type alveolar nerve dissociation surgery bone removal guide plate, including a mandibular bone removal guide plate body matched with an alveolar nerve vascular bundle, the mandibular bone removal guide plate body including a mandibular positioning portion and a hollow bone removal portion provided in the mandibular positioning portion, the mandibular positioning portion including a mandibular buccal-side joint surface, the mandibular buccal-side joint surface including a mandibular upper edge joint surface, a proximal mandibular chin hole joint surface, a mandibular lower edge joint surface and a distal mandibular chin hole joint surface; the mandible positioning part is provided with a positioning hole and a positioning part matched with the positioning hole.
The utility model discloses an among some embodiments, the mandible removes bone guide body when laminating in the jaw buccal side pre-fenestration surface, the mandible removes bone guide body and extends to lower jaw lower edge direction from the lower jaw upper edge according to the vertical axis direction, and keeps away the jaw chin binding face and can rise a direction to the mandible and extend, the mandible removes bone guide body and lies in the one side of keeping away from jaw chin hole in the coronal axis direction.
In some embodiments of the present invention, the distance extending from the upper mandibular edge to the lower mandibular edge of the mandible bone removal guide body is 15-30 mm.
In some embodiments of the present invention, the thickness of the mandible bone removal guide body is 0.5-2 mm.
In some embodiments of the present invention, the opening area of the hollow boning part is 0.5-2 cm2。
In some embodiments of the present invention, the positioning hole is formed through the mandible bone removal guide body.
In some embodiments of the present invention, the mandible bone removal guide body is provided with more than two positioning holes; the locating hole evenly distributed is on the mandible guide plate body that goes to bone.
In some embodiments of the present invention, the positioning hole is disposed on the far mandibular chin aperture abutting surface.
In some embodiments of the present invention, the diameter of the positioning hole is 1-2 mm.
In some embodiments of the present invention, the area of the upper edge binding surface of the mandible is 20mm2～40mm2(ii) a The area of the lower edge binding surface of the mandible is 20mm2～40mm2(ii) a The area of the lower edge binding surface of the mandible is 20mm2～40mm2(ii) a The area of the far mandibular chin pore binding surface is 0.5-2 cm2。
The utility model has the advantages that:
this use neotype bone support formula dental alveolus nerve dissociation art guide that goes bone, through going the jaw bone guide body location at the jaw buccal surface that the neural vascular bundle of dental alveolus corresponds with the jaw, the reasonable size that bone portion was removed to the cavity that sets up makes and goes the position of bone more accurate to reduce the operation time extension, avoid increasing, the unexpected damage nerve, remaining bone volume reduction and postoperative swelling infection risk increase scheduling problem for seeking the excessive bleeding that leads to of going bone of nerve.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic view of the rear view structure of the present invention.
Fig. 3 is a schematic perspective view of the present invention.
Fig. 4 is a schematic view of the structure of the present invention.
Description of the element reference numerals
1 mandible bone removing guide plate body
11 hollow boneless section
12 mandible positioning part
121 cheek side fitting surface of mandible
1211 lower jawbone upper edge abutment surface
1212 near mandibular jaw orifice jointing face
1213 lower edge binding face of mandible
1214 far mandibular jaw orifice binding surface
2 locating hole
3 buccal side of mandible
4 lower alveolar neurovascular bundle
5 mandible chin hole
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 ~ 3, the embodiment of the utility model provides a neural dissociative art of alveolar under bone support formula baffle that boneses, include and go up alveolar nerve vascular bundle 4 matched with mandible baffle body 1 down, here cooperatees and specifically indicates, and the mandible goes up the position of baffle body 1 and is located the mandible buccal side department that alveolar nerve vascular bundle corresponds down, carries out the neural dissociative art of alveolar down after windowing. The mandible bone removing guide plate body 1 comprises a mandible positioning part 12 and a hollow bone removing part 11 arranged on the mandible positioning part 12, wherein the mandible positioning part 12 comprises a mandible buccal joint surface 121; the mandible positioning part 12 is provided with a positioning hole 2. The utility model discloses a neural free art of alveolar under bone support formula baffle that bonesets, the lower jaw cheek side 3 that the baffle body 1 that bonesets was fixed a position 4 correspondences of alveolar nerve blood vessel under with the lower jaw, fixes a position baffle body 1 that bonesets through the locating hole, and the lower jaw is boned baffle body 1 and can be realized removing the location when windowing and is removed the bone scope more accurate.
The utility model provides a alveolar nerve dissociation art accords with conventional human physiology structure under tooth support formula. As shown in fig. 4, when the mandibular bone guide body 1 is attached to the 3 pre-fenestrated surface on the buccal side of the mandible, the mandibular bone guide body 1 is attached to the 3 buccal side of the mandible through the buccal attachment surface 121, the mandibular bone guide body 1 is closely attached to the 3 buccal side of the mandible through the buccal attachment surface of the mandible, and the facial attachment surface of the mandible is attached to the 3 portion of the mandible to be contacted with the 3 buccal side of the mandible and is substantially consistent with the contour of the 3 portion of the mandible to be contacted with the 3 buccal side of the mandible. The attached area is generally that the mandible bone removal guide body 1 extends from the upper jaw edge to the lower jaw edge in the vertical axis direction, and the extending direction of the hollow bone removal part 11 is consistent with the extending direction of the mandible bone removal guide body 1. The mandible bone removal guide body 1 is positioned at one side far away from the mandible chin holes 5 in the direction of the coronal axis, namely the projection on the coronal axis, and the mandible bone removal guide body 1 is not positioned between two mandible chin holes 5, but is positioned at the other side of one of the mandible chin holes 5. For another example, the mandible bone removal guide plate body 1 can extend from the upper edge of the mandible to the lower edge of the mandible for a distance of 3-6 mm, 3-4 mm, 4-5 mm, or 5-6 mm along the vertical axis direction. The area that mandible bone conduction board body 11 was laminated can be located the department of windowing in advance usually, and is located the upper portion on mandible surface, and the periphery that the bone portion 11 was removed in cavity is equipped with mandible location portion 12, can fix the position of removing the bone more stably. The mandible bone removal guide plate body 11 generally has a certain thickness, so that the bone support type alveolar nerve dissociation surgery bone removal guide plate can be guaranteed to have certain strength, for example, the thickness of the mandible bone removal guide plate body 11 can be 0.5-2 mm, and more for example, the thickness can be 0.5-1 mm or 1-2 mm.
The utility model provides a alveolar nerve dissociation art bone conduction board that goes down of bone support formula, jaw cheek side binding face 121 include jaw upper edge binding face 1211, nearly jaw chin hole binding face 1212, jaw lower edge binding face 1213 to and jaw chin hole binding face 1214 far away. The upper mandibular edge abutting surface 1211, the near mandibular chin hole abutting surface, the lower mandibular edge abutting surface 1213 and the far mandibular chin hole abutting surface 1214 enclose to form a hollow osteotomy portion 11, and the position of the pre-operative tissue is visible from the outside of the bone-supporting alveolar nerve dissociation procedure osteotomy guide plate. The upper mandibular edge fitting surface 1211 is adapted to fit the upper buccal edge of the mandible, and the upper mandibular edge fitting surface 1211 is fitted to the portion of the mandible which is supposed to be in contact with the upper buccal edge and has a contour substantially identical to the contour of the portion of the mandible which is supposed to be in contact with the upper buccal edge. For the mandible chin hole abutting surface 1212The mandibular chin aperture abutment surface 1212 abuts against the portion of the mandibular chin aperture that is intended to contact the portion of the mandibular chin aperture that is adjacent to the buccal portion of the mandibular chin aperture and has a contour that substantially conforms to the contour of the portion of the mandibular chin aperture that is intended to contact the buccal portion of the mandibular chin aperture. The mandible lower edge joint surface 1213 is used for jointing and is close to the lower side of the cheek side 3 of the mandible, and the mandible lower edge joint surface 1213 is jointed with the part close to the lower side of the cheek side 3 of the mandible, which is supposed to be contacted with the lower side of the cheek side 3 of the mandible, and the outline of the part close to the lower side of the cheek side 3 of the mandible is basically consistent. The distal mandibular chin aperture abutting surface 1214 is adapted to abut a portion of the cheek side 3 of the mandible on a side further from the mandibular chin aperture 5, and the distal mandibular chin aperture abutting surface 1214 may extend in a direction of the ascending jaw, the distal mandibular chin aperture abutting surface 1214 abutting a portion of the cheek side 3 of the mandible on a side further from the mandibular chin aperture 5 substantially conforming to a contour of a portion of the cheek side 3 of the mandible on a side further from the mandibular chin aperture 5. In one embodiment, the width of the upper mandibular edge surface 1211 is 2-4 mm, and the area of the upper mandibular edge surface 1211 is 20mm2～40mm2. The width of the near-mandibular-chin-pore fitting surface 1212 is 2-4 mm; the area of the near mandibular chin pore binding surface is 20mm2～40mm2. The width of the lower edge joint surface 1213 of the mandible is 2-4 mm; the lower edge joint surface 1213 of the mandible has an area of 20mm2～40mm2. The width of the far mandibular chin hole fitting surface 1214 is 4-20 mm; the area of the far mandibular chin pore binding surface 1214 is 0.5-2 cm2. Wherein the width is the distance between the inner and outer rims. In the foregoing width and area ranges, the mandibular buccal attachment surface 121 can be attached to the mandibular buccal side 3 well, and is convenient for subsequent fixation.
The utility model provides a alveolar nerve dissociation art bone conduction board that goes under bone support formula, under the normal conditions, the cavity goes the area of bone portion 11 to decide according to actual conditions. In one embodiment, the opening area of the hollow bone-removing part 11 can be, for example, 0.5-2 cm2，0.5～1cm2，1～1.5cm2Or 1.5 to 2cm2. The area of the opening of the hollow deboned section 11 is within the above range, so that the deboned range can be more accurate.
The utility model provides an among the alveolar nerve dissociation art guide that bonesets, as shown in fig. 1 ~ 3, the locating hole can wear to locate mandible and remove bone guide body 1 (promptly, the locating hole can extend to the outside that mandible removed bone guide body 1 from the binding face of binding member (mandible buccal side 3)) to can be when removing the bone, can be fixed in the mandible buccal side 3 surfaces of its corresponding position with mandible removed bone guide body 1 through the setting element with locating hole matched with.
In a preferred embodiment of the present invention, the positioning member may be a titanium nail, and the positioning hole may be screw-fitted to the positioning member. The utility model discloses in another preferred embodiment, jaw goes to bone baffle body 1 and can be equipped with a plurality of locating holes 2 on, for example, can be equipped with more than two locating holes 2, locating hole 2 can evenly distributed in jaw goes to bone baffle body 1. In one embodiment, the alignment aperture may be located on the chin aperture abutment surface 1214. The utility model discloses the accessible bores the mode of setting element for example titanium nail and fixes the baffle temporarily in the position of ideal to the art when reducing manual fixed baffle is wild shelters from and moves with anti-resetting, and the bone operation is gone in the aspect.
In general, the diameter and area of the positioning holes 2 are not limited, and in one embodiment, the diameter of the positioning holes 2 on the mandible bone removal guide body 1 may be 1-2 mm, and the percentage of the hole area of the positioning holes 2 on the mandible bone removal guide body 1 (i.e., the hole area relative to the surface area of the mandible bone removal guide body 1) may be 5-10%.
Generally, a bone-supporting inferior alveolar nerve dissociation bone guide plate can be designed and constructed by ct scanning and reconstructing the patient's mandible. The specific construction method is as follows:
first, a three-dimensional model of the mandible is provided that includes a windowed bone-removal location designed to locate the posterior alveolar neurovascular bundle. The three-dimensional model of the mandible may typically include various regions of the mandible, for example, at least regions including a buccal surface of the mandible. The three-dimensional model of the mandible can be obtained by introducing CT data into software, such as Simplan, Mimics, Proplan, and the like. The windowing bone removal position is usually the basis for bone removal in mandibular bone buccal windowing dissection and lower alveolar nerve dissociation surgery, and is usually the mandibular buccal side corresponding to the lower alveolar neurovascular bundle.
Secondly, constructing a mandible bone removal guide plate body, namely constructing the mandible bone removal guide plate body on the basis of the cheek side surface of the mandible at the windowing bone removal position; the position and the angle of the hollow boning part and the windowing boning position are consistent, and the mandible positioning part is positioned on the periphery of the windowing boning position and can be effectively attached to the surface of the mandible in the area. Can assist the operator to find out the accurate bone removing range when using the bone removing tools such as saw blades, ultrasonic bone knives, drill pins and the like. In a preferred embodiment of the present invention, the specific method for constructing the mandibular bone removal guide body based on the windowing bone removal position may be: and constructing a reference surface of the mandible positioning part based on the periphery of the windowing bone-removing position, and constructing the mandible positioning part based on the reference surface of the mandible positioning part. The reference surface of the mandible positioning part is usually matched with the periphery of the windowing boning position and extends for a certain distance in the direction away from the windowing boning position, and then the mandible positioning part can be constructed and obtained. The distance of extension usually is corresponding with the width of mandible location portion, and the hollow part in the middle of the mandible location portion is the cavity portion of boning, so, constitutes whole mandible portion of bone conduction board body.
Thirdly, a positioning hole is constructed on the mandible bone removal guide plate body. The locating hole can wear to locate the mandible and remove the bone conduction board body (promptly, the locating hole can extend to the baffle outside from the mandible surface) to can be when removing the bone, can be fixed in the mandible cheek side surface of its corresponding position with mandible and remove bone conduction board body through the setting element with locating hole matched with. In a preferred embodiment of the present invention, the positioning member may be a titanium nail, and the positioning hole may be screw-fitted to the positioning member. The utility model discloses in another preferred embodiment, can be equipped with a plurality of locating holes on the mandibular bone removal guide body, for example, can be equipped with more than two locating holes, the locating hole can evenly distributed in the mandibular bone removal guide body.
And (3) obtaining the bone-supporting type lower alveolar nerve dissociation bone removal guide plate by resin or titanium alloy 3D printing according to the constructed model. Generally speaking, the bone-supporting lower alveolar nerve denervation bone removal guide may preferably be 3D metal printed using a titanium alloy.
The utility model discloses a working process:
and (3) reconstructing the mandible of the patient through ct scanning, positioning the lower alveolar neurovascular bundle 4, designing a windowing and bone removing part, and designing and manufacturing a bone removing guide plate based on a three-dimensional printing technology.
During the operation, turn over the lamella and expose jawbone bone wall in the area of missing the tooth, go the osseous conduction board that goes out of alveolar nerve dissociation under the bone support formula just lie in 3 surfaces of jawbone buccal side and with 3 windows of jawbone buccal side and go the bone surface and closely laminate, the cavity is gone the position of ossifying 11 and is cooperateed with the position of windowing, and is fixed with the locating part, goes the within range of ossifying 11 at the cavity and can safely quick seek and find lower alveolar nerve vascular bundle 4.
It should be noted that the bone-supporting type alveolar nerve dissociation surgery bone removal guide plate is particularly suitable for use when the number of missing teeth is large, the remaining teeth are obviously loosened or the dentition defect area crosses the tooth center line to cause the tooth-supporting type guide plate to be incapable of being accurately placed in place.
To sum up, this use neotype alveolar nerve free operation of bone support formula down and remove bone conduction board, through removing bone conduction board body 1 with the mandible and fix a position 3 surfaces of the mandible buccal side that corresponds at alveolar nerve vascular bundle, the size that bone portion 11 was removed in the reasonable cavity that sets up makes the position of removing bone more accurate to reduce the operation time extension, avoid increasing, the unexpected damage nerve, remaining bone mass reduction and postoperative swelling infection risk increase scheduling problem for seeking the hemorrhage that the nerve too much leads to of removing bone.
To sum up, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. The bone-supporting type alveolar nerve dissociation surgery bone removal guide plate is characterized by comprising a mandible bone removal guide plate body (1) matched with an alveolar neurovascular bundle, wherein the mandible bone removal guide plate body (1) comprises a mandible positioning part (12) and a hollow bone removal part (11) arranged on the mandible positioning part (12), the mandible positioning part (12) comprises a mandible buccal joint surface (121), and the mandible buccal joint surface (121) comprises a mandible upper edge joint surface (1211), a near-mandibular-foramen joint surface (1212), a mandible lower edge joint surface (1213) and a far-mandibular-foramen joint surface (1214); be equipped with locating hole (2) on mandible location portion (12), still include the setting element with locating hole (2) matched with.
2. The bone-supporting lower alveolar neuro-ionization bone removal guide of claim 1, wherein the lower jaw bone removal guide body (1) extends in a vertical axis direction from an upper mandibular edge to a lower mandibular edge when the lower jaw bone removal guide body (1) is attached to the buccal pre-fenestrated surface of the lower jaw, and the lower jaw bone removal guide body (1) is located on a side away from a mandibular chin opening in a coronal axis direction.
3. The bone-supporting lower alveolar neuro-ionization bone removal guide of claim 2, wherein the lower jaw bone removal guide body (1) extends from the upper mandibular edge to the lower mandibular edge for a distance of 15 to 30 mm.
4. The bone-supporting lower alveolar nerve denervation bone guide according to claim 1, wherein the thickness of the lower jawbone bone guide body (1) is 0.5-2 mm.
5. The bone-supporting lower alveolar nerve denervation bone removal guide of claim 1, wherein said hollow bone removal portion(11) Has an opening area of 0.5 to 2cm2。
6. The bone-supporting lower alveolar neuro-dissociation bone removal guide of claim 1, wherein the positioning hole (2) is bored through the mandible bone removal guide body (1).
7. The bone-supporting lower alveolar nerve denervation bone guide according to claim 1, wherein the lower jawbone bone guide body (1) is provided with more than two positioning holes (2); the positioning holes (2) are uniformly distributed on the mandible bone removal guide plate body (1).
8. The bone-supporting lower alveolar nerve ionization bone removal guide plate according to claim 1, wherein the pilot hole (2) is provided on the distal mandibular chin aperture abutment surface (1214).
9. The bone-supporting lower alveolar nerve denervation bone removal guide plate according to claim 1, wherein the diameter of the positioning hole (2) is 1-2 mm.
10. The bone-supporting lower alveolar nerve denervation bone removal guide plate according to claim 1, wherein the area of the upper edge abutment surface (1211) of the mandible is 20mm2～40mm2(ii) a The area of the mandible chin pore abutting surface (1212) is 20mm2～40mm2(ii) a The lower edge joint surface (1213) of the mandible has an area of 20mm2～40mm2(ii) a The area of the far mandibular chin pore binding surface (1214) is 0.5-2 cm2。
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| CN202021574802.0U CN213156218U (en) | 2020-07-31 | 2020-07-31 | Alveolar nerve dissociation art bone conduction board that goes down of bone support formula |
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| CN202021574802.0U CN213156218U (en) | 2020-07-31 | 2020-07-31 | Alveolar nerve dissociation art bone conduction board that goes down of bone support formula |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827307A (en) * | 2021-10-21 | 2021-12-24 | 武汉大学 | Jaw cuts bone baffle indicating system that is in place |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113827307A (en) * | 2021-10-21 | 2021-12-24 | 武汉大学 | Jaw cuts bone baffle indicating system that is in place |
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