CN218106099U - Cutting operation end and cutting tool capable of controlling remaining thickness of bone wall of bone split - Google Patents

Abstract

The utility model discloses a cutting operation end and cutting tool capable of controlling the thickness of a split bone wall, belonging to the technical field of medical instruments, wherein the cutting operation end comprises a rotating shaft, a circular saw blade and a first lantern ring, wherein the circular saw blade and the first lantern ring are both fixed on the rotating shaft and are coaxial with the rotating shaft; the first lantern ring and the circular saw blade are arranged at intervals, and the interval between every two adjacent annular saw blades is 1-5 mm. The cutting tool includes the cutting operation end. The cutting operation end that this scheme provided is used for fluting on the alveolar bone, compares in current squeezer fluting, and the operation degree of difficulty reduces, can effectively control the diaphysis simultaneously and remain thickness.

Description

Cutting operation end and cutting tool capable of controlling remaining thickness of bone wall of bone split

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a cutting operation end and cutting means of thickness are remained to controllable bone splitting bone wall.

Background

In recent years, implant restoration has become the best way to restore dentition defects and odontopathy defects, and has the advantages of no grinding of adjacent teeth, small number of false teeth and the like. In clinical surgery, the amount of bone in the patient limits the choice of operation and implant for the clinician. Bone augmentation is usually performed by bone splitting when the patient has sufficient vertical bone mass and insufficient horizontal bone mass (typically less than 6mm wide).

In the prior art, regarding the implant repair bone split, for example, patent application No. CN201520039521.8, the invention provides a bone split extruder named as bone split extruder, which includes a wrench head, a pin and a handle, wherein the wrench head includes a wedge cutting head and an expanding head, and the specific use is as follows: the wedge is cut the head and is used for tentatively cutting open cortical of bone, and the enlarged footing extrudees and expands, through the institutional advancement to the enlarged footing, on having the basis of bone splitting basic function, still has and guarantees that it struts the angle in cancellous bone and cortex and is suitable mutually, can avoid the instrument excessively to get into the characteristics of the difficult extraction and the overheated phenomenon that leads to simultaneously.

The existing operation is difficult, and the bone splitting effect mainly depends on the experience and skill of a doctor.

Further optimizing the structural design of the bone splitting tool, and having promotion significance for the implementation of the implantation repair operation.

SUMMERY OF THE UTILITY MODEL

To the structural design of the further optimization bone instrument of cleaving that above-mentioned provided, have the technical problem who promotes meaning to the implementation of planting the restoration operation, the utility model provides a cutting operation end and cutting means that the bone wall remains thickness can be split to the controllable bone. The cutting operation end that this scheme provided is used for fluting on the alveolar bone, compares in current squeezer fluting, and the operation degree of difficulty reduces, can effectively control the diaphysis simultaneously and remain thickness.

To the above problem, the utility model provides a cutting operation end and cutting means that thickness was remain to controllable bone splitting bone wall solve the problem through following technical essential: the cutting operation end capable of controlling the remaining thickness of the bone wall for splitting the bone comprises a rotating shaft, a circular saw blade and a first lantern ring, wherein the circular saw blade and the first lantern ring are fixed on the rotating shaft and coaxial with the rotating shaft;

the first lantern ring and the circular saw blade are arranged at intervals, and the distance between the first lantern ring and the circular saw blade is 1mm-5mm.

In the prior art, like the technical scheme that patent application number is CN201520039521.8 provided, for realizing the alveolar bone splitting, use for the wrench head that the wedge cut the head and tentatively split the bone cortex after the use for the wrench head of enlarged head extrudees the expansion. In actual operation, the wedge cutting head is limited by the space condition of operation and the cortex of the bone is hard, so that the wedge cutting head is easy to be dislocated relative to a required position when the preliminary splitting is realized, and the operation difficulty is high. Based on this, this scheme provides one kind and splits the technical scheme of cutting operation end through the circular saw piece as the bone, and this scheme is applicable to and tentatively splits alveolar bone, and follow-up usable traditional squeezer carries out further bone and splits.

In this scheme, set up to the radius that the circular saw blade is greater than the radius of pivot, aim at obtaining one kind and have the cutting operation end of cutting sawtooth in the outside of pivot, further set up to still include the first lantern ring that sets up with the circular saw blade interval, aim at utilizing first lantern ring terminal surface and alveolar bone side laminating to prescribe a limit to the circular saw blade in alveolar bone width direction's position through the side of alveolar bone, avoid appearing if remain the planting effect that the diaphysis is less than 1mm influence the later stage because of the tongue side.

The specific using method comprises the following steps: the cutting operation end is as the operation end of bone cleaving grooving to connect driving motor in the pivot and rotate with the drive the operation end rotates, is utilizing the circular saw blade to carry out the initial stage of cutting or at whole in-process simultaneously, keeps the terminal surface of first lantern ring and the side contact of alveolar bone, utilizes first lantern ring and alveolar bone side to provide the position of locating surface control circular saw blade in alveolar bone width direction, thereby reaches the purpose that the bone wall remains thickness in the control bone cleaving operation. When specifically using, for guarantee fluting incision efficiency and incision surface flatness, the circular saw blade should adopt higher rotational speed and shorter sawtooth, and concrete rotational speed and sawtooth length technical personnel in the field can rationally select as required, are different from wedge cutting head pressure embedding and carry out the bone and split, and the circular saw blade is embedded into the alveolar bone more easily and is beated when tentatively embedding and control more easily, so this scheme still has the easy operation, does benefit to the characteristics that bone split position precision keeps.

Since the bone splitting operation is generally applied to a patient with the horizontal bone quantity (width) of the alveolar bone smaller than 6mm, 1mm to 5mm defined above aims to provide an application that the circular saw blade can cut the alveolar bone and the bone walls on the two sides of the cutting groove have the thickness larger than 1mm when the end surface of the first sleeve ring is restrained by the side surface of the alveolar bone, namely, all values in the distance range are available for the existing patient. When the distance is larger than 4mm, the method is generally applicable to other situations that the horizontal bone quantity of the alveolar bone is larger than 6mm, the distance is preferably set to be in a numerical range of 1 to 3mm in consideration of the situations of patients in the existing general operation and the width of the obtained notch, when the method is set to limit the application of the distance by using a second sleeve ring, the cutting operation end can be set to be in a component form, in the component, a plurality of second sleeve rings with different length numerical values are matched, for example, the length numerical values comprise 1mm, 1.5mm, 2mm, 2.5mm and 3mm, so that when the method is used for different patients, the second sleeve ring with the proper length is selected according to specific situations to limit the distance. Equivalently, when the first lantern ring and other parts are fixed on the rotating shaft, the cutting operation end is integrally taken as an assembly body, the assembly body is arranged in a set product and comprises a plurality of assembly bodies, and the numerical values of the intervals in the assembly bodies comprise a plurality of the 1mm, the 1.5mm, the 2mm, the 2.5mm and the 3 mm.

The technical scheme is further used as the cutting operation end capable of controlling the remaining thickness of the bone wall of the bone split:

as a technical scheme for enabling the relative position between the first lantern ring and the circular saw blade to be suitable for different patient requirements by changing the distance, the device is characterized in that: the spacing is adjustable.

When the scheme is implemented, under the background of the prior art, the fixing of the first lantern ring on the rotating shaft can be absolute fixing or can be fixed on the axis of the rotating shaft, if the first lantern ring can rotate relative to the rotating shaft, the corresponding structural characteristics can cause the rotation of the cutting operation end in a using state to be unstable, and the controllability of the operation is not favorable. As a technical scheme that the structure of the cutting operation end can be simplified, the first lantern ring is only used for guiding the circular saw blade to be embedded into the alveolar bone, and if the alveolar bone is further cut subsequently, the circular saw blade can be further guided to go deep by utilizing the existing cutting groove so as to reduce or avoid the influence of heat generated by friction between the first lantern ring and the alveolar bone or soft tissues on a patient, the cutting operation end is arranged as follows: the first collar is detachably connected to the rotating shaft. This scheme is when specifically using, and the first lantern ring restraint circular saw piece of process utilization of circular saw piece embedding alveolar bone is in alveolar bone width direction's position, and when the fluting that obtains can guide the circular saw piece further when dark along the fluting, dismantles the first lantern ring, avoids first lantern ring and alveolar bone to take place the unnecessary friction.

Utilize this cutting operation end to slot as one kind in the oral cavity outside, set up first lantern ring as with alveolar bone lingual side contact, the circular saw blade is located the first lantern ring outside for first lantern ring for the process of circular saw blade cutting alveolar bone is not by the technical scheme that first lantern ring sheltered from: one end of the rotating shaft is the rear end used for being connected with the driving motor, the other end of the rotating shaft is the front end, and the circular saw blade and the first sleeve ring are arranged at the front end;

the first collar is located on a side of the circular saw blade adjacent the front end.

As a first lantern ring position adjustable's on the pivot concrete implementation mode, set up to: the second lantern ring is sleeved on the rotating shaft and clamped between the first lantern ring and the circular saw blade, and the radius of the second lantern ring is smaller than that of the circular saw blade;

the second lantern ring and the first lantern ring are detachable relative to the rotating shaft;

the first collar is locked to the shaft by a thread. In this scheme, the first lantern ring can set up to be sheet structure, and the second lantern ring is the cartridge structure, like this, through the both ends of the second lantern ring respectively with the terminal surface of first lantern ring and the terminal surface contact of circular saw piece, simultaneously through the second lantern ring that adopts different length, can obtain different intervals. The concrete form and the mounting means of second lantern ring are convenient for control the focus of cutting operation end on the axis of pivot, be a simple structure through the thread locking, the connection form dismantled of convenient tearing open, dress can adopt to the scheme including parts such as third lantern ring, removable circular saw blade, second lantern ring and first lantern ring: after the parts are sequentially stacked on the rotating shaft through the locking nut, the rear end of the part is supported on the positioning step of the rotating shaft, and the front end of the part is fixed by the locking nut which is connected to the rotating shaft through threads; can also be set as follows: the first lantern ring, the second lantern ring and the circular saw blade are provided with threads for being in threaded connection with the rotating shaft (only the first lantern ring and the circular saw blade can be provided with threads), and meanwhile, when the rotating direction of the threads is the rotating direction of the rotating shaft, all parts are self-tightened relative to the rotating shaft, and the parts can be in threaded connection with the rotating shaft. If when the first lantern ring is not needed, the first lantern ring is removed or the first lantern ring and the second lantern ring are both removed, and the circular saw blade is reserved.

When adopting the circular saw blade to carry out alveolar bone grooving, for avoiding cutting depth deeper, the bone piece drops and leads to bone to split the operation failure, sets up to: the circular saw blade also comprises a termination ring which is fixed on the rotating shaft and is coaxial with the rotating shaft, and the radius of the termination ring is larger than that of the rotating shaft and smaller than that of the circular saw blade;

the end part of the termination ring is connected with the end part of the circular saw blade or the termination ring is arranged at intervals with the circular saw blade, and when the termination ring is arranged at intervals, the distance between the circular saw blade and the termination ring is smaller than 6mm. The scheme is characterized in that the scheme is arranged to further comprise a termination ring, the radius of the circular saw blade is larger than that of the termination ring, and the positions of the circular saw blade and the termination ring on the axis of the rotating shaft are limited simultaneously, so that after the circular saw blade meeting the requirements of a patient is selected before an operation and the matching relation of the termination ring, the circular saw blade is embedded into the alveolar bone in the process of embedding the circular saw blade into the alveolar bone, and when the side surface of the termination ring is in contact with the bone surface of the alveolar bone, the circular saw blade reaches the maximum cutting depth. Thus, the termination ring can avoid the failure of the bone splitting operation caused by the falling of bone blocks due to excessive cutting; meanwhile, the termination ring is used as a circular saw blade embedded maximum depth mark, and an operator does not need to pay attention to the depth of the circular saw blade in the specific cutting process, so the scheme also has the characteristic of convenient operation.

As defined above: the end part of the termination ring is connected with the end part of the circular saw blade or the termination ring and the circular saw blade are arranged at intervals, namely the termination ring and the position of the circular saw blade on the axis of the rotating shaft are limited, and the purpose is that after the circular saw blade penetrates into the alveolar bone for a certain depth (the difference between the radius of the circular saw blade and the radius of the termination ring), the position of the termination ring relative to the cutting opening meets the condition that the termination ring can be supported on the bone surface (alveolar ridge) to prevent the circular saw blade from further cutting the alveolar bone. The end part of the termination ring is connected with the end part of the circular saw blade, namely the termination ring is in contact with the circular saw blade, the end part of the termination ring is formed on the same part, the end part of the circular saw blade is formed on different parts, and when the end part of the termination ring is formed on different parts, the end part of the termination ring is installed to be in contact assembly. Less than 6mm in the above-defined spacing results from the use of bone splitting for bone augmentation when the alveolar bone width is typically less than 6mm, e.g. a circular saw blade with a spacing between 5mm and 6mm may not be used for some patients, and when less than 5mm, general utility to patients increases. Since the thickness of the wall after the bone is split needs to be taken into consideration as the case may be, and the thickness of the circular saw blade itself needs to be taken into consideration, when the gap is arranged, it is preferable to set the distance between the circular saw blade and the end ring to be less than 2mm. In view of versatility, it is preferable that the end of the end ring is connected to the end of the circular saw blade.

Optionally, the following steps are set: the termination ring is a second collar or a third collar;

when the termination ring is a third lantern ring, the radius of the third lantern ring is larger than the outer diameter of the second lantern ring, and the third lantern ring is detachably connected to the rotating shaft. In this solution, the second collar itself may be used as a stop collar, since it may be fitted in contact with the end face of the circular saw blade and the radius of the second collar is smaller than the radius of the circular saw blade. However, the difference between the radii of the stop ring and the circular saw blade determines the cutting depth of the circular saw blade, and if the second sleeve ring is used as the stop ring, the currently required stop ring needs to meet the requirements of the radius and the length, so that the selection and matching of the second sleeve ring are disadvantageous. Based on this, it is preferable to use a third collar for the stop ring, which is dimensioned so that its radius is larger than that of the second collar, so that the third collar can be brought into contact with the alveolar ridge before the second collar during penetration of the circular saw blade into the alveolar bone.

In the case where the termination ring is a third collar, there is further provided: the third lantern ring and the second lantern ring are arranged on different sides of the circular saw blade;

the second lantern ring, the circular saw blade and the third lantern ring are located at the front end of the rotating shaft, and the second lantern ring is closest to the end of the front end of the third lantern ring, the circular saw blade and the third lantern ring. This scheme of adoption, according to the second lantern ring of patient's condition selection matter length down after, utilize first lantern ring for with alveolar bone tongue side contact, can observe the state that circular saw blade, third lantern ring and alveolar bone are relevant by patient's oral cavity side.

Compared with the conventional plastic, the technical scheme has the advantages of high surface hardness, good thermal conductivity and large specific heat capacity, and is set as follows: the second lantern ring is made of metal. This scheme of adoption, not only the hardness of usable second lantern ring is avoided rotatory and is suffered the second lantern ring of destruction and cause the harm to patient's alveolar bone side, can reduce the temperature rise of the second lantern ring and alveolar bone contact in-process simultaneously.

The scheme also discloses a cutting tool capable of controlling the remaining thickness of the bone splitting wall, which comprises the cutting operation end and a driving motor for driving the rotating shaft to rotate around the axis of the rotating shaft. The scheme comprises the specific application of the cutting operation end.

The utility model discloses following beneficial effect has:

this scheme is when applying to the bone and splitting, is different from the embedding of wedge switch and carries out the bone and splits, and the circular saw piece imbeds alveolar bone more easily and beats easier control when tentatively imbedding, so this scheme have easy operation, do benefit to the characteristics that bone splitting position accuracy keeps.

Through setting up to still including first lantern ring, utilize first lantern ring, inject the position of circular saw blade in alveolar bone width direction through the side of alveolar bone, inject through such position, can avoid appearing if the condition that remains the bone wall and be less than 1mm because of the lingual side and influence the planting effect in later stage appears.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a cutting tool for controlling the thickness of a cleaved bone wall according to the present disclosure.

The reference numbers in the drawings are respectively: 1. locking nut, 2, first lantern ring, 3, the second lantern ring, 4, circular saw blade, 5, the third lantern ring, 6, pivot, 7, driving motor, 8, location step.

Detailed Description

The present invention will be described in further detail with reference to the following examples, but the present invention is not limited to the following examples:

example 1:

as shown in fig. 1, the cutting operation end capable of controlling the remaining thickness of the bone wall of the bone split comprises a rotating shaft 6, a circular saw blade 4 and a first lantern ring 2, wherein the circular saw blade 4 is fixed on the rotating shaft 6 and is coaxial with the rotating shaft 6, the radius of the circular saw blade 4 is larger than that of the rotating shaft 6, and the radius of the first lantern ring 2 is larger than that of the circular saw blade 4;

the first lantern ring 2 and the circular saw blade 4 are arranged at intervals, and the interval between every two adjacent annular rings is 1mm-5mm.

In the prior art, as the technical scheme that patent application number is CN201520039521.8 provides, for realizing that alveolar bone splits, use for the wrench head that the wedge cut the head and tentatively split bone cortex back and use the wrench head for the enlarged head to extrude and expand. In actual operation, the wedge cutting head is limited by the space condition of operation and the cortex of the bone is hard, so that the wedge cutting head is easy to be dislocated relative to a required position when the preliminary splitting is realized, and the operation difficulty is high. Based on this, this scheme provides one kind and splits the technical scheme of cutting operation end through circular saw blade 4 as the bone, and this scheme is applicable to and tentatively splits alveolar bone, and follow-up usable traditional squeezer carries out further bone and splits.

In this scheme, the radius that sets up to circular saw blade 4 is greater than pivot 6, aim at obtaining one kind and have the cutting operation end of cutting sawtooth in the outside of pivot 6, further set up to still include the first lantern ring 2 that sets up with circular saw blade 4 interval, aim at utilizing the laminating of 2 terminal surfaces of first lantern ring and alveolar bone side, in order to prescribe a limit to circular saw blade 4 in alveolar bone width direction's position through the side of alveolar bone, avoid appearing if remain the planting effect that the diaphysis is less than 1mm influence later stage because of the tongue side.

The specific using method comprises the following steps: the cutting operation end is as the operation end of bone cleaving grooving to connect driving motor 7 in pivot 6 with the drive the operation end rotates, is utilizing circular saw blade 4 to carry out the initial stage of cutting or at whole in-process simultaneously, keeps the terminal surface of first lantern ring 2 and the side contact of alveolar bone, utilizes first lantern ring 2 and alveolar bone side to provide the position of locating surface control circular saw blade 4 in alveolar bone width direction, thereby reaches the purpose that the bone wall remains thickness in the control bone cleaving operation. When specifically using, for guarantee fluting incision efficiency and incision surface flatness, circular saw blade 4 should adopt higher rotational speed and shorter sawtooth, concrete rotational speed and sawtooth length technical personnel in the field can rationally select as required, be different from wedge cut head pressure embedding and carry out the bone and split, circular saw blade 4 imbeds alveolar bone more easily and beats easier control when tentatively imbedding, so this scheme still has the processing ease, do benefit to the characteristics that bone splits position precision kept.

Since the bone splitting operation is generally applied to a patient with the horizontal bone quantity (width) of the alveolar bone smaller than 6mm, 1mm to 5mm defined above aims to provide an application that the circular saw blade 4 can cut the alveolar bone and the bone walls on the two sides of the slot have the thickness larger than 1mm while the end surface of the first lantern ring 2 is restrained by the lateral surface of the alveolar bone, that is, all the numerical values in the distance range are available for the existing patient. When the distance is larger than 4mm, the distance is preferably set to a value range of 1 to 3mm in consideration of the condition of a patient in the existing general operation and the width of the obtained notch itself, and when the operation is set to limit the distance by using the second collar 3 as follows, the cutting operation end may be set to a form of an assembly in which a plurality of second collars 3 having different length values, such as length values including 1mm, 1.5mm, 2mm, 2.5mm and 3mm, are matched, so that when being used for different patients, the second collar 3 having a proper length is selected according to the specific condition to limit the distance. Equivalently, when the parts such as the first lantern ring 2 and the like are fixed on the rotating shaft 6, the cutting operation end is integrally taken as an assembly body, the assembly body is arranged in a set of products and comprises a plurality of assembly bodies, and the numerical values of the intervals in the assembly bodies comprise a plurality of the 1mm, the 1.5mm, the 2mm, the 2.5mm and the 3 mm.

Example 2:

the present example is further defined on the basis of example 1:

as a technical solution for enabling the relative position between the first collar 2 and the circular saw blade 4 to be adapted to different patient needs by changing the distance, it is provided that: the spacing is adjustable.

Example 3:

the present example is further defined on the basis of example 1:

when the scheme is implemented, under the background of the prior art, the fixing of the first lantern ring 2 on the rotating shaft 6 can be absolute fixing or fixing on the axis of the rotating shaft 6, if the first lantern ring 2 can rotate relative to the rotating shaft 6, the corresponding structural characteristics can cause the cutting operation end in a use state to rotate unstably, which is not favorable for the controllability of the operation. As a can simplify this cutting operation end structure, first lantern ring 2 only is used for guiding circular saw blade 4 embedding alveolar bone, if follow-up further cutting alveolar bone's in-process, usable grooving guide circular saw blade 4 has had has gone deep further to reduce or avoid the technical scheme of the heat that first lantern ring 2 and alveolar bone or soft tissue friction produced to patient's influence, set up to: the first lantern ring 2 is detachably connected to the rotating shaft 6. This scheme is when specifically using, and the process of saw blade 4 embedding alveolar bone utilizes first lantern ring 2 restraint saw blade 4 in alveolar bone width direction's position, and when the fluting that obtains can guide the further time of deepening of circular saw blade 4 along the fluting, dismantles first lantern ring 2, avoids first lantern ring 2 and alveolar bone to take place unnecessary friction.

Example 4:

this example is further defined on the basis of example 1:

utilize this cutting operation end to slot outside the oral cavity as one kind, set up first lantern ring 2 into with alveolar bone lingual side contact, circular saw blade 4 is located the 2 outsides of first lantern ring for first lantern ring 2 for the process of circular saw blade 4 cutting alveolar bone is not by the technical scheme that first lantern ring 2 sheltered from: one end of the rotating shaft 6 is a rear end used for being connected with the driving motor 7, the other end of the rotating shaft is a front end, and the circular saw blade 4 and the first lantern ring 2 are arranged at the front end;

the first collar 2 is located on the side of the circular saw blade 4 adjacent the front end.

Example 5:

the present example is further defined on the basis of example 1:

as a first lantern ring 2 on the pivot 6 position adjustable concrete implementation, set up as: the circular saw blade is characterized by further comprising a second sleeve ring 3 which is sleeved on the rotating shaft 6 and clamped between the first sleeve ring 2 and the circular saw blade 4, wherein the radius of the second sleeve ring 3 is smaller than that of the circular saw blade 4;

the second lantern ring 3 and the first lantern ring 2 are both detachable relative to the rotating shaft 6;

the first collar 2 is locked to the shaft 6 by means of a thread. In this scheme, first lantern ring 2 can set up to be sheet structure, and second lantern ring 3 is the cartridge structure, like this, through the both ends of second lantern ring 3 respectively with the terminal surface of first lantern ring 2 and the terminal surface contact of circular saw blade 4, through the second lantern ring 3 that adopts different length, can obtain different intervals simultaneously. The concrete form and the mounting means of second lantern ring 3 are convenient for control the focus of cutting operation end on the axis of pivot 6, be a simple structure through the thread locking, the connection form dismantled of convenient dismantlement, dress, to the scheme including parts such as third lantern ring 5, removable circular saw blade 4, the second lantern ring 3 and the first lantern ring 2, can adopt: after the parts are sequentially stacked on the rotating shaft 6 through the locking nut 1, the rear end of the locking nut is supported on the positioning step 8 of the rotating shaft 6, and the front end of the locking nut 1 is connected to the rotating shaft 6 through threads to realize position fixing; can also be set as follows: the first collar 2, the second collar 3 and the circular saw blade 4 are provided with threads for being in threaded connection with the rotating shaft 6 (only the first collar 2 and the circular saw blade 4 can be configured to be provided with threads), and meanwhile, the screwing direction of the threads is that each part is self-tightening relative to the rotating shaft 6 when the rotating shaft 6 rotates, and the parts can be in threaded connection with the rotating shaft 6. For example, when the first collar 2 is not needed, the first collar 2 is removed or both the first collar 2 and the second collar 3 are removed, and the circular saw blade 4 is retained.

Example 6:

this example is further defined on the basis of example 5:

when adopting circular saw blade 4 to carry out alveolar bone grooving, for avoiding cutting depth deeper, the bone piece drops and leads to bone to split the operation failure, sets up to: the circular saw blade further comprises a stop ring which is fixed on the rotating shaft 6 and is coaxial with the rotating shaft 6, and the radius of the stop ring is larger than that of the rotating shaft 6 and smaller than that of the circular saw blade 4;

the end of the termination ring is connected with the end of the circular saw blade 4 or the termination ring is arranged at intervals with the circular saw blade 4, and when the termination ring is arranged at intervals, the distance between the circular saw blade 4 and the termination ring is smaller than 6mm. The scheme is characterized in that the cutting tool further comprises a termination ring, the radius of the circular saw blade 4 is larger than that of the termination ring, and the positions of the circular saw blade 4 and the termination ring on the axis of the rotating shaft 6 are limited at the same time, so that after the circular saw blade 4 meeting the requirements of a patient is selected before an operation and the circular saw blade 4 and the termination ring are matched, the circular saw blade 4 is embedded into the alveolar bone in the process of embedding the circular saw blade 4 into the alveolar bone, and when the side face of the termination ring is in contact with the bone face of the alveolar bone, the circular saw blade 4 reaches the maximum cutting depth. Thus, the termination ring can avoid the failure of the bone splitting operation caused by the falling of bone blocks due to excessive cutting; meanwhile, the termination ring is used as the maximum depth mark for embedding the circular saw blade 4, and an operator does not need to pay attention to the depth of the circular saw blade 4 in the specific cutting process, so the scheme also has the characteristic of convenient operation.

As defined above: the end part of the termination ring is connected with the end part of the circular saw blade 4 or the termination ring and the circular saw blade 4 are arranged at intervals, namely the termination ring and the position of the circular saw blade 4 on the axis of the rotating shaft 6 are limited, and the purpose is that after the circular saw blade 4 penetrates into the alveolar bone for a certain depth (the difference between the radius of the circular saw blade 4 and the radius of the termination ring), the position of the termination ring relative to the cutting opening is satisfied that the termination ring can be supported on the bone surface (alveolar ridge) to prevent the circular saw blade 4 from further cutting the alveolar bone. The end of the stop ring is connected with the end of the circular saw blade 4, namely the stop ring is in contact with the circular saw blade 4, the stop ring and the circular saw blade are formed on the same part and different parts, and when the stop ring and the circular saw blade are formed on different parts, the stop ring and the circular saw blade are installed to be in contact assembly. Less than 6mm in the above-defined spacing results from the use of bone splitting for bone augmentation when the alveolar bone width is typically less than 6mm, e.g. a circular saw blade 4 spaced from the stop ring by a distance of between 5mm and 6mm may not be useful for some patients, and when less than 5mm, general utility to patients increases. Since the thickness of the wall after the bone is split needs to be taken into consideration as the case may be, and the thickness of the circular saw blade 4 itself needs to be taken into consideration, when the gap is provided, it is preferable to set the interval between the circular saw blade 4 and the end ring to be less than 2mm. In view of versatility, it is preferable that the end of the end ring is connected to the end of the circular saw blade 4.

Optionally, the following steps are provided: the termination ring is a second sleeve ring 3 or a third sleeve ring 5;

when the stop ring is a third sleeve ring 5, the radius of the third sleeve ring 5 is larger than the outer diameter of the second sleeve ring 3, and the third sleeve ring 5 is detachably connected to the rotating shaft 6. In this embodiment, the second collar 3 itself can be used as a stop ring, since the second collar 3 can be fitted in contact with the end face of the circular saw blade 4 and the radius of the second collar 3 is smaller than the radius of the circular saw blade 4. However, if the radius difference between the stop ring and the circular saw blade 4 determines the cutting depth of the circular saw blade 4, if the second collar 3 is used as the stop ring, the currently required stop ring needs to meet the requirements of radius and length, so that the selection and matching of the second collar 3 are disadvantageous. On this basis, it is preferred to use a third collar 5 for the stop ring, the above dimensioning of the third collar 5 being intended to make its radius larger than that of the second collar 3, so that the third collar 5 can be brought into contact with the alveolar ridge before the second collar 3 during penetration of the circular saw blade 4 into the alveolar bone.

In case the termination ring is a third collar 5, it is further arranged to: the third collar 5 and the second collar 3 are arranged on different sides of the circular saw blade 4;

among them, the second collar 3, the circular saw blade 4, and the third collar 5 are located at the front end of the rotating shaft 6, and of these three, the second collar 3 is closest to the end of the front end. This scheme of adoption, according to patient's condition at present after selecting the second lantern ring 3 of matter length, utilize first lantern ring 2 for contacting with alveolar bone lingual side, can observe the state that circular saw blade 4, third lantern ring 5 are correlated with the alveolar bone by patient's oral cavity side.

Example 7:

this example is further defined on the basis of example 1:

compared with the conventional plastic, the technical scheme has the advantages of high surface hardness, good thermal conductivity and large specific heat capacity, and is set as follows: the second collar 3 is made of metal. This scheme of adoption, not only the second lantern ring 3 that the hardness of usable second lantern ring 3 is avoided rotatory and is suffered to destroy causes the harm to patient's alveolar bone side, can reduce the temperature rise of second lantern ring 3 and alveolar bone contact in-process simultaneously.

Example 8:

this embodiment provides a cutting tool capable of controlling the remaining thickness of a bone wall obtained by splitting a bone, based on embodiment 1, which comprises a cutting operation end as described in embodiment 1, and a driving motor 7 for driving the rotary shaft 6 to rotate about the axis of the rotary shaft 6. The scheme is the specific application of the cutting operation end.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. To the utility model belongs to the technical field of the ordinary skilled person, do not deviate from the utility model discloses a other embodiments that reach under the technical scheme all should contain the utility model discloses an in the scope of protection.

Claims (10)

1. The cutting operation end capable of controlling the remaining thickness of the bone wall for bone splitting is characterized by comprising a rotating shaft (6), a circular saw blade (4) and a first collar (2), wherein the circular saw blade (4) and the first collar (2) are fixed on the rotating shaft (6) and are coaxial with the rotating shaft (6), the radius of the circular saw blade (4) is larger than that of the rotating shaft (6), and the radius of the first collar (2) is larger than that of the circular saw blade (4);

the first collar (2) and the circular saw blade (4) are arranged at intervals, and the interval between every two adjacent annular rings is 1mm-5mm.

2. The cutting manipulation end of claim 1, wherein the spacing is adjustable.

3. The cutting operation end for controlling the remaining thickness of a bone split wall according to claim 1, characterized in that the first collar (2) is detachably connected to the shaft (6).

4. The cutting operation end capable of controlling the remaining thickness of a bone wall for bone splitting according to claim 1, wherein one end of the rotating shaft (6) is a rear end for connecting a driving motor (7), the other end is a front end, and the circular saw blade (4) and the first collar (2) are arranged at the front end;

the first collar (2) is located on the side of the circular saw blade (4) near the front end.

5. The cutting operation end capable of controlling the remaining thickness of the bone wall for bone splitting according to claim 1, further comprising a second collar (3) fitted on the rotating shaft (6) and clamped between the first collar (2) and the circular saw blade (4), wherein the radius of the second collar (3) is smaller than that of the circular saw blade (4);

the second sleeve ring (3) and the first sleeve ring (2) are detachable relative to the rotating shaft (6);

the first collar (2) is locked on the rotating shaft (6) through threads.

6. The cutting operation end capable of controlling the remaining thickness of the bone wall for bone splitting according to claim 5, further comprising a stop ring fixed on the rotating shaft (6) and coaxial with the rotating shaft (6), wherein the radius of the stop ring is larger than that of the rotating shaft (6) and smaller than that of the circular saw blade (4);

the end part of the termination ring is connected with the end part of the circular saw blade (4) or the termination ring and the circular saw blade (4) are arranged at intervals, and when the termination ring is arranged at intervals, the distance between the circular saw blade (4) and the termination ring is smaller than 6mm.

7. The cutting manipulation end capable of controlling the remaining thickness of a bone split wall according to claim 6, wherein the termination ring is a second collar (3) or a third collar (5);

when the stop ring is a third sleeve ring (5), the radius of the third sleeve ring (5) is larger than the outer diameter of the second sleeve ring (3), and the third sleeve ring (5) is detachably connected to the rotating shaft (6).

8. The cutting manipulation end for controlling the remaining thickness of a bone split wall as claimed in claim 7, wherein the termination ring is a third collar (5), the third collar (5) and the second collar (3) being arranged on different sides of the circular saw blade;

the second lantern ring (3), the circular saw blade (4) and the third lantern ring (5) are located at the front end of the rotating shaft (6), and the second lantern ring (3) is closest to the end portion of the front end of the three.

9. The cutting operation end capable of controlling the remaining thickness of the bone wall for bone splitting according to any one of claims 5 to 8, wherein the second collar (3) is made of metal.

10. Cutting tool for controlling the remaining thickness of the wall of a bone split, comprising a cutting-operative end according to any one of claims 1 to 9, and a drive motor (7) for driving the rotation shaft (6) in rotation about the axis of the shaft (6) itself.

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