CN110693576A - An electric planer using an intervertebral foramen microscope - Google Patents

Abstract

Translated fromChinese

本发明公开了一种椎间孔镜下使用电动刨削器，属于手术器械领域，包括外刀、内刀和手柄，内刀连接柄的一端连接有用于与刀座传动连接的连接块，刀座的端部开设有与连接块相配合的第三插槽，内刀连接柄上还开设有与内刀管连通的通孔；第一插槽的内壁固定设置有固定杆，内刀连接柄的外壁上开设有斜环槽，固定杆的一端位于斜环槽内，内刀连接柄的一端还开设有与斜环槽连通的第一让位槽；本发明能够在椎间孔镜下使用，更方便医生对组织进行刨削；工作时，内刀口与外刀口中的锯齿状边缘相互剪切，实现对黄韧带、松动的髓核、甚至椎板软骨进行快速刨削，内刀管转动同时会沿着外刀管长度的方向来回移动，增大外刀管长度方向的撕扯力，达到高效率清理目标去除组织的目的。

The invention discloses an electric planer for intervertebral foramen, which belongs to the field of surgical instruments and comprises an outer knife, an inner knife and a handle. The end of the seat is provided with a third slot matched with the connecting block, and the inner knife connecting handle is also provided with a through hole communicating with the inner knife tube; the inner wall of the first slot is fixedly provided with a fixing rod, and the inner knife connecting handle An oblique ring groove is opened on the outer wall of the knife, one end of the fixing rod is located in the oblique ring groove, and one end of the connecting handle of the inner knife is also provided with a first abdication groove communicated with the oblique ring groove; the invention can be used under the intervertebral foramen mirror , it is more convenient for doctors to plan the tissue; when working, the serrated edges in the inner knife edge and the outer knife edge are cut with each other to realize the rapid planing of the ligamentum flavum, the loose nucleus pulposus, and even the lamina cartilage, and the inner knife tube rotates. At the same time, it will move back and forth along the length of the outer knife tube to increase the tearing force in the length direction of the outer knife tube, so as to achieve the purpose of high-efficiency cleaning and tissue removal.

Description

Use electronic planer under intervertebral foramen mirror

Technical Field

The invention relates to the field of surgical instruments, in particular to an electric planer used under an intervertebral foramen mirror.

Background

With the continuous progress of medical technology, the transforaminal endoscopic surgery which is an important component of spinal microsurgery can cut and repair pathological change tissues of intervertebral disc under minimally invasive conditions, the transforaminal endoscopic surgery operated under the endoscope has the advantages of less pain, quick recovery, reduction of postoperative complications, low operation cost and the like, the development of the transforaminal endoscopic surgery fully reflects the development trend of modern surgical minimally invasive surgery, in the process of the transforaminal endoscopic surgery, pathological change soft tissues under the endoscope need to be removed, and the electric planer has unique advantages aiming at the removal of large-area soft tissues;

the planing knife of the electric planing device in the prior art has the advantages that the diameter of the knife is larger than the inner diameter of the intervertebral foramen mirror working channel, the length is short, the operation under the mirror cannot be carried out, the opening at the head end of the planing knife is small, the broken tissue blocks are easy to block the knife edge during planing, the efficiency is not high, the operation effect of the operation is influenced, and the operation time is prolonged.

Disclosure of Invention

The invention provides an electric planer used under an intervertebral foramen mirror, which can solve the problems that the electric planer in the prior art cannot be used under the intervertebral foramen mirror, the edge of a planer tool is small, the edge of the planer tool is easily blocked by tissue fragments, and the planing efficiency is low.

An electric planer used under an intervertebral foramen mirror comprises an outer cutter, an inner cutter and a handle, wherein the outer cutter comprises a circular-tube-shaped outer cutter tube and an outer cutter connecting handle connected with an outer catheter, and one end of the outer cutter tube, which is far away from the outer cutter connecting handle, is provided with an outer cutter edge penetrating through the wall of the outer cutter tube; the inner cutter comprises a circular tube-shaped inner cutter tube and an inner cutter connecting handle connected with the inner cutter tube, one end of the inner cutter tube, which is far away from the inner cutter connecting handle, is provided with an inner cutter edge penetrating through the tube wall of the inner cutter tube, the outer diameter of the inner cutter tube is matched with the inner diameter of the outer cutter tube, the inner cutter tube can rotate relatively and is inserted into the outer cutter tube from the tail end of the outer cutter connecting handle, and one end of the outer cutter connecting handle is provided with a groove matched with the inner cutter connecting handle;

the front end of the handle is provided with a first slot matched with the outer cutter connecting handle, the handle is internally provided with a motor, a cutter holder connected with the motor connecting shaft and a negative pressure suction channel, the tail end of the handle is provided with a motor interface and a negative pressure interface, the motor interface is connected with the input end of the motor through a wire, and the negative pressure interface is communicated with the negative pressure suction channel;

one end of the inner cutter connecting handle is connected with a connecting block which is used for being in transmission connection with the cutter holder, a third slot which is matched with the connecting block is formed in the end part of the cutter holder, and a through hole which is communicated with the inner cutter pipe is formed in the inner cutter connecting handle;

the fixed dead lever that is provided with of inner wall of first slot, the inclined ring groove has been seted up on the outer wall of interior sword connection handle, the one end of dead lever is located in the inclined ring inslot, the first groove of stepping down that communicates with the inclined ring groove is still seted up to the one end of interior sword connection handle.

Preferably, a buckle is arranged on the outer wall of the outer cutter connecting handle, a limiting groove used for clamping the buckle is formed in the inner wall of the first slot, the handle is provided with a jack communicated with the limiting groove, and a push rod used for separating the buckle from the limiting groove is arranged in the jack.

Preferably, the outer wall of the handle is fixedly connected with a fixed seat for fixing the ejector rod, and a return spring sleeved on the ejector rod is arranged in the fixed seat.

Preferably, a groove is formed in a notch of the first slot, a push ring is arranged in the groove, the push ring is fixedly connected with the two connecting plates, a second slot matched with the connecting plates is formed in the groove, a second abdicating groove used for abdicating the ejector rod is formed in one of the connecting plates, the ejector rod penetrates through the second abdicating groove, a third abdicating groove used for abdicating the ejector rod is formed in the ejector rod, and a spring is arranged in the second slot.

Preferably, a limiting ring is fixed on the outer cutter connecting handle, and a stepped groove matched with the limiting ring is formed in the push ring.

Preferably, the outer side of the outer cutter connecting handle is fixedly connected with a positioning block, the inner wall of the first slot is provided with a positioning groove matched with the positioning block, and the push ring is also provided with a through groove for the positioning block to yield.

Preferably, the edges of the two sides of the outer knife edge and the inner knife edge are both in a sawtooth shape.

Preferably, the tail end walls of the outer cutter tube and the inner cutter tube are spherical.

Preferably, the outer diameter range of the outer cutter tube is 3.5mm-4.0mm, and the length range of the outer cutter tube is 300mm-320 mm.

Preferably, the handle is further provided with a suction valve.

Compared with the prior art, the invention has the beneficial effects that: the length of the outer cutter tube is greater than that of the working channel of the intervertebral foramen endoscope, and the outer diameter of the outer cutter tube is smaller than the inner diameter of the working channel, so that the outer cutter tube can be used under the intervertebral foramen endoscope, and is more convenient for a doctor to plane tissues; during operation, the cockscomb structure edge in interior edge of a knife and the outer edge of a knife cuts each other, realizes planing fast the pathological change tissue, and when interior cutter pipe rotated, received the influence of dead lever, interior cutter pipe was intraductal along the direction round trip movement of outer cutter pipe length outside the cutter, and the power of tearing of increase outer cutter pipe length direction reaches the purpose of high efficiency clearance pathological change tissue.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the outer blade of the present invention;

FIG. 3 is a schematic structural view of the inner blade of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 1 in accordance with the present invention;

FIG. 5 is a partial cross-sectional view of the present invention;

FIG. 6 is an enlarged view of a portion of the present invention at B of FIG. 5;

FIG. 7 is a schematic end view of the present invention;

fig. 8 is a schematic structural view of the joint of the ejector rod and the connecting plate.

Description of reference numerals:

1-handle, 2-outer knife pipe, 3-outer knife connecting handle, 4-outer knife edge, 5-inner knife pipe, 6-inner knife connecting handle, 7-inner knife edge, 8-first slot, 9-motor, 10-knife seat, 11-negative pressure suction channel, 12-motor interface, 13-negative pressure interface, 14-connecting block, 15-through hole, 16-fixing rod, 17-inclined ring slot, 18-first abdicating slot, 19-buckle, 20-limiting slot, 21-ejector rod, 22-fixing seat, 23-reset spring, 24-groove, 25-push ring, 26-connecting plate, 27-second slot, 28-second abdicating slot, 29-third abdicating slot, 30-limiting ring, 31-third slot, 32-positioning block, 33-positioning groove and 34-suction switch.

Detailed Description

An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.

As shown in fig. 1 to 8, an electric planer used under an intervertebral foramen mirror provided by an embodiment of the present invention includes an outer cutter, an inner cutter and ahandle 1, wherein the outer cutter includes a circular tube-shapedouter cutter tube 2 and an outercutter connecting handle 3 connected with theouter catheter 2, and one end of theouter cutter tube 2 away from the outercutter connecting handle 3 is provided with an outer knife edge 4 penetrating through a tube wall of theouter cutter tube 2; the inner cutter comprises a circular tube-shaped inner cutter tube 5 and an innercutter connecting handle 6 connected with the inner cutter tube 5, one end of the inner cutter tube 5, which is far away from the innercutter connecting handle 6, is provided with an inner cutter opening 7 penetrating through the tube wall of the inner cutter tube 5, the outer diameter of the inner cutter tube 5 is matched with the inner diameter of theouter cutter tube 2, the inner cutter tube 5 can rotate relatively and is inserted into theouter cutter tube 2 from the tail end of the outercutter connecting handle 3, and one end of the outercutter connecting handle 3 is provided with a groove matched with the innercutter connecting handle 6;

the front end of thehandle 1 is provided with afirst slot 8 matched with the outercutter connecting handle 3, thehandle 1 is also internally provided with amotor 9, acutter holder 10 connected with themotor 9 and a negativepressure suction channel 11, the tail end of thehandle 1 is provided with amotor interface 12 and anegative pressure interface 13, themotor interface 12 is connected with the input end of themotor 9 through an electric wire, and thenegative pressure interface 13 is communicated with the negativepressure suction channel 11;

one end of the innercutter connecting handle 6 is connected with a connectingblock 14 which is used for being in transmission connection with thecutter holder 10, the end part of thecutter holder 10 is provided with athird slot 31 which is matched with the connectingblock 14, and the innercutter connecting handle 6 is also provided with athrough hole 15 which is communicated with theinner cutter pipe 2;

afixing rod 16 is fixedly arranged on the inner wall of thefirst slot 8, aninclined ring groove 17 is formed in the outer wall of the innercutter connecting handle 6, one end of thefixing rod 16 is located in theinclined ring groove 17, and a first abdicatinggroove 18 communicated with theinclined ring groove 17 is further formed in one end of the innercutter connecting handle 6;

when thefixing rod 16 is installed, the first abdicatinggroove 18 abdicating thefixing rod 16, and after thefixing rod 16 is installed, one end of the fixing rod is located in theinclined ring groove 17;

themotor 9 drives the tool apron 10 to rotate, so as to drive the inner knife to rotate, when the inner knife rotates, the length of the innerknife connecting handle 6 which can move back and forth along the length direction of the inner knife pipe 5 is one fourth of the length of the inner knife opening 7 under the action of theinclined ring groove 17 and thefixing rod 16 with one end positioned in theinclined ring groove 17, after the inner knife is installed, the connectingblock 14 is always positioned in thethird slot 31, and even if the inner knife can move back and forth along the length direction of the inner knife pipe 5, the transmission relation between thetool apron 10 and the connectingblock 14 cannot be influenced;

abuckle 19 is arranged on the outer wall of the outercutter connecting handle 3, alimiting groove 20 for clamping thebuckle 19 is formed in the inner wall of thefirst slot 8, a jack communicated with thelimiting groove 20 is formed in thehandle 1, and amandril 21 for separating thebuckle 19 from thelimiting groove 20 is arranged in the jack;

thebuckle 19 can be ejected out of the limitinggroove 20 by pressing theejector rod 21 inwards, so that the fixation of the outer knife is released, generally, theouter knife tube 2 needs to be pulled outwards while theejector rod 21 is pressed during disassembly, theejector rod 21 can be abutted against the outerknife connecting handle 3, the friction force is increased, theouter knife tube 2 cannot be pulled out well, a part of physiological saline can be remained on theouter knife tube 2, when the outer knife tube is pulled forcefully, a hand can slide towards the tail end of theouter knife tube 2, and the hand can be easily pulled by the sawteeth of the outer knife edge 4 by forcefully pulling the hand, so that the wound infection is easily caused;

a fixedseat 22 for fixing theejector rod 21 is fixedly connected to the outer wall of thehandle 1, a return spring 23 sleeved on theejector rod 21 is arranged in the fixedseat 22, and the return spring 23 is used for pulling theejector rod 12 outwards, so that theejector rod 21 can return to the original position after the hand is released;

agroove 24 is formed in a notch of thefirst slot 8, apush ring 25 is arranged in thegroove 24, thepush ring 25 is fixedly connected with two connectingplates 26, asecond slot 27 matched with the connectingplates 26 is formed in thegroove 24, a second abdicatinggroove 28 used for abdicating theejector rod 21 is formed in one of the connectingplates 26, theejector rod 21 penetrates through the second abdicatinggroove 28, a third abdicatinggroove 29 used for abdicating theejector rod 21 is formed in theejector rod 21, a spring is arranged in one of thesecond slots 27, and the spring in thesecond slot 27 is used for outwards pushing against the connectingplates 26;

a limitingring 30 is fixed on the outercutter connecting handle 2, and a stepped groove matched with the limitingring 30 is formed in thepush ring 25;

thepush ring 25 can push the outercutter connecting handle 2 outwards under the action of the spring;

the joint of theejector rod 21 and the connectingplate 26 is shown in fig. 8, a spring positioned on the upper side of the connectingplate 26 is omitted in fig. 8, theejector rod 21 is used for clamping the connectingplate 26, the force of the spring cannot be completely applied to thepush ring 25, when the connecting plate needs to be detached, theejector rod 21 is pressed, thebuckle 19 is ejected out of thelimiting groove 20 by theejector rod 21, the connectingplate 26 is ejected outwards under the action of the spring until the connecting plate is ejected into the third abdicatinggroove 29 of theejector rod 21, namely most force of the spring acts on thepush ring 25, namely the outerknife connecting handle 3 is ejected outwards, so that theejector rod 21 is separated from thebuckle 19, when the outer knife is pulled outwards, the friction resistance brought by theejector rod 21 ejecting on thebuckle 19 can be reduced, the force is saved, the outer knife can be pulled out by smaller force, the outer knife is safer, and the hand is prevented;

the outer side of the outercutter connecting handle 3 is fixedly connected with apositioning block 32, the inner wall of thefirst slot 8 is provided with a positioning groove 33 matched with thepositioning block 32, thepush ring 25 is also provided with a through groove for yielding thepositioning block 32, thepositioning block 32 is used for limiting the rotation of the outer cutter and has positioning and marking functions, the mounting is convenient, after the outer cutter connecting handle is inserted, thebuckle 19 is aligned with thelimiting groove 20, the connectingblock 14 is aligned with thethird slot 31, thefixing rod 22 is aligned with the first yieldinggroove 18, when the outer cutter connecting handle is mounted, the inner cutter is firstly inserted into the outer cutter, theinner cutter 7 is overlapped with the outer cutter 4, and then thepositioning block 32 is aligned with the positioning groove 33 and inserted, so that the mounting can be;

thehandle 1 is also provided with asuction valve 34; thesuction valve 34 controls the opening and closing of the negativepressure suction channel 11, and the prior art has many structures, so the details are not described herein;

the edges of the two sides of the outer knife edge 4 and theinner knife edge 7 are both in a sawtooth shape;

preferably, the tail end walls of theouter cutter tube 2 and the inner cutter tube 5 are spherical;

preferably, the outer diameter of theouter cutter tube 2 is 3.8mm, and the length of theouter cutter tube 2 is 310 mm.

The working principle is as follows: when the tool is installed, the inner tool is inserted into the outer tool, the direction of theinner tool edge 7 is the same as that of the outer tool edge 4, the outer tool is held by hand, thepositioning block 32 is aligned with the positioning groove 33 to be inserted, the pushingring 25 is pushed into thegroove 24 and is contacted with the groove wall of thegroove 24, thebuckle 19 is clamped into the limitinggroove 20, theejector rod 21 returns to the original position under the action of the return spring 23, one end of the connectingblock 14 is positioned in thethird slot 31 of thetool apron 10, and one end of the fixingrod 16 enters theinclined ring groove 17 through thefirst abdicating groove 18;

when the inner cutter is used, themotor interface 12 and thenegative pressure interface 13 are correspondingly connected together through a connecting wire, themotor 9 is started, themotor 9 drives thecutter holder 10 to rotate, the inner cutter is driven to rotate under the transmission of thecutter holder 10 and the connectingblock 14, and when the inner cutter rotates, the inner cutter moves back and forth along the length direction of the inner cutter in a small range under the guide of the fixingrod 16 and theinclined ring groove 17 on the innercutter connecting handle 6, so that the tearing force is increased during planing, and the planing efficiency is improved;

when dismantling the clearance,press ejector pin 21,ejector pin 21 is outside the ejectingspacing groove 20 ofbuckle 19, connectingplate 26 pushes up in the third groove of stepping down 29 ofejector pin 21 under the effect of spring, towardouter ejector sleeve 25 promptly, thereby toward outersword connecting handle 3 that promotes outward, outersword connecting handle 3 can drivebuckle 19 outward, causebuckle 19 andejector pin 21 to separate, outersword connecting handle 3 just can not receive the frictional force that produces fromejector pin 21conflict buckle 19, then holdouter knife pipe 2 with the hand and can easily pull out by drawing outward.

The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.

Claims (10)

Translated fromChinese

1.一种椎间孔镜下使用电动刨削器，包括外刀、内刀和手柄，其特征在于，所述外刀包括圆管状的外刀管和与所述外导管连接的外刀连接柄，所述外刀管远离所述外刀连接柄的一端处开设有一段贯穿所述外刀管管壁的的外刀口；所述内刀包括圆管状的内刀管和与所述内刀管连接的内刀连接柄，所述内刀管远离所述内刀连接柄的一端处开设有一段贯穿所述内刀管管壁的的内刀口，所述内刀管的外径与所述外刀管的内径相匹配，所述内刀管可相对自转的自所述外刀连接柄的尾端插入于所述外刀管中，所述外刀连接柄的一端开设有与所述内刀连接柄相匹配的槽；1. use electric planer under a kind of intervertebral foramen mirror, comprise outer knife, inner knife and handle, it is characterized in that, described outer knife comprises the outer knife tube of circular tubular shape and is connected with the outer knife that is connected with described outer conduit a handle, the end of the outer knife tube away from the outer knife connecting handle is provided with a section of an outer knife edge that penetrates the wall of the outer knife tube; the inner knife includes a circular tube-shaped inner knife tube and a The inner knife connecting handle connected by the pipe, the end of the inner knife tube away from the inner knife connecting handle is provided with a section of inner knife edge that penetrates through the wall of the inner knife tube, and the outer diameter of the inner knife tube is the same as that of the inner knife tube. The inner diameter of the outer knife tube is matched, the inner knife tube can be inserted into the outer knife tube from the tail end of the outer knife connecting handle that rotates relative to the rotation, and one end of the outer knife connecting handle is provided with the inner knife Knife connecting handle matching slot;所述手柄的前端开设有与所述外刀连接柄相配合的第一插槽，所述手柄内还设置有电机、与所述电机连接轴连接的刀座和负压抽吸通道，所述手柄的末端设置有电机接口和负压接口，所述电机接口通过电线与所述电机的输入端连接，所述负压接口与所述负压抽吸通道连通；The front end of the handle is provided with a first slot matched with the outer knife connecting handle, and the handle is also provided with a motor, a knife seat connected with the motor connecting shaft and a negative pressure suction channel. The end of the handle is provided with a motor interface and a negative pressure interface, the motor interface is connected with the input end of the motor through a wire, and the negative pressure interface is communicated with the negative pressure suction channel;所述内刀连接柄的一端连接有用于与所述刀座传动连接的连接块，所述刀座的端部开设有与所述连接块相配合的第三插槽，所述内刀连接柄上还开设有与所述内刀管连通的通孔；One end of the inner knife connecting handle is connected with a connecting block for driving connection with the knife seat, the end of the knife seat is provided with a third slot matched with the connecting block, and the inner knife connecting handle is There is also a through hole communicating with the inner knife tube;所述第一插槽的内壁固定设置有固定杆，所述内刀连接柄的外壁上开设有斜环槽，所述固定杆的一端位于所述斜环槽内，所述内刀连接柄的一端还开设有与斜环槽连通的第一让位槽。The inner wall of the first slot is fixed with a fixing rod, the outer wall of the inner knife connecting handle is provided with an inclined ring groove, one end of the fixing rod is located in the inclined ring groove, and the inner knife connecting handle has an inclined ring groove. One end is also provided with a first abdication groove communicated with the inclined ring groove.2.如权利要求1所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀连接柄的外壁上设置有卡扣，所述第一插槽的内壁上开设有用于卡住所述卡扣的限位槽，所述手柄开设有与所述限位槽相通的插孔，插孔内设置有用于让所述卡扣和所述限位槽分离的顶杆。2. A kind of electric planer for use under the microscope of intervertebral foramen as claimed in claim 1, it is characterized in that, the outer wall of the outer knife connecting handle is provided with a buckle, and the inner wall of the first slot is provided with a buckle There is a limit slot for clamping the buckle, the handle is provided with an insertion hole that communicates with the limit slot, and a jack for separating the buckle and the limit slot is arranged in the insertion hole. .3.如权利要求2所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述手柄的外壁上固定连接有用于固定所述顶杆的固定座，所述固定座内设置有套接在所述顶杆上的复位弹簧。3. The electric planer used under a foramen microscope as claimed in claim 2, wherein the outer wall of the handle is fixedly connected with a fixing seat for fixing the ejector rod, and a fixing seat is fixed in the fixing seat. A return spring sleeved on the top rod is provided.4.如权利要求3所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述第一插槽的槽口处开设有凹槽，所述凹槽内设置有推环，所述推环固定连接有两个连接板，所述凹槽内开设有与所述连接板相配合的第二插槽，其中一个所述连接板上开设有用于给所述顶杆让位的第二让位槽，所述顶杆穿过所述第二让位槽，所述顶杆上开设有用于给所述顶杆让位的第三让位槽，其中一个所述第二插槽内设置有弹簧。4. the electric planer used under a kind of intervertebral foramen mirror as claimed in claim 3 is characterized in that, a groove is provided at the notch of the first slot, and a push ring is provided in the groove , the push ring is fixedly connected with two connecting plates, the groove is provided with a second slot matched with the connecting plates, and one of the connecting plates is provided with a space for the ejector rod The second abdication groove of the ram, the ejector rod passes through the second abdication slot, and the ejector rod is provided with a third abdication slot for giving way to the ejector rod, one of which is the second insertion slot. A spring is arranged in the groove.5.如权利要求4所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀连接柄上固定有限位环，所述推环上设置有与所述限位环相配合的阶梯槽。5. The electric planer used under the endoscopic foramen of claim 4, wherein a limit ring is fixed on the outer knife connecting handle, and a limit ring is provided on the push ring. Ring-fitted stepped grooves.6.如权利要求5所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀连接柄的外侧固定连接有定位块，所述第一插槽的内壁开设有与所述定位块相匹配的定位槽，所述推环上也开设有用于给所述定位块让位的通槽。6. The electric planer for use under the microscope of intervertebral foramen as claimed in claim 5, wherein a positioning block is fixedly connected to the outer side of the outer knife connecting handle, and the inner wall of the first slot is provided with A positioning groove matched with the positioning block, and a through groove for giving way to the positioning block is also opened on the push ring.7.如权利要求6所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀口和所述内刀口的两侧边缘均呈锯齿状。7 . The electric planer for endoscopic use of intervertebral foramen according to claim 6 , wherein the edges on both sides of the outer knife edge and the inner knife edge are serrated. 8 .8.如权利要求7所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀管和所述内刀管的尾端壁均呈球面。8 . The electric planer for endoscopic use of the intervertebral foramen according to claim 7 , wherein the end walls of the outer knife tube and the inner knife tube are spherical surfaces. 9 .9.如权利要求8所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述外刀管的外径范围为3.5mm-3.9mm，所述外刀管的长度范围为300mm-320mm。9 . The electric planer used under a foramen microscope according to claim 8 , wherein the outer diameter of the outer knife tube ranges from 3.5mm to 3.9mm, and the length of the outer knife tube ranges from 3.5 mm to 3.9 mm. 10 . 300mm-320mm.10.如权利要求9所述的一种椎间孔镜下使用电动刨削器，其特征在于，所述手柄上还设置有抽吸阀门。10 . The electric planer for endoscopic use of intervertebral foramen according to claim 9 , wherein a suction valve is further provided on the handle. 11 .

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